diff --git a/data_descriptors/variables/_context b/data_descriptors/variables/_context
index 80d37e901..60525a36f 100644
--- a/data_descriptors/variables/_context
+++ b/data_descriptors/variables/_context
@@ -4,7 +4,7 @@
     "@vocab": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/",
     "id": "@id",
     "type": "@type",
-    "mip-tables": {
+    "mip_tables": {
       "@reverse": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/tables/variable_entry"
     }
   },
diff --git a/data_descriptors/variables/_schema b/data_descriptors/variables/_schema
index 67baca6d8..34f2341d3 100644
--- a/data_descriptors/variables/_schema
+++ b/data_descriptors/variables/_schema
@@ -203,7 +203,7 @@
     },
     "required": [
         "id",
-        "mip-tables",
+        "mip_tables",
         "type",
         "dimensions",
         "dtype",
diff --git a/data_descriptors/variables/acmon.flashrate.json b/data_descriptors/variables/acmon.flashrate.json
index f31fb8800..b4cac42f4 100644
--- a/data_descriptors/variables/acmon.flashrate.json
+++ b/data_descriptors/variables/acmon.flashrate.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "acmon.flashrate.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "acmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/acmonz.oxloss.json b/data_descriptors/variables/acmonz.oxloss.json
index 51e91bc5e..0d8d3c062 100644
--- a/data_descriptors/variables/acmonz.oxloss.json
+++ b/data_descriptors/variables/acmonz.oxloss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "acmonz.oxloss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "acmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/acmonz.oxprod.json b/data_descriptors/variables/acmonz.oxprod.json
index fc3e4e9c9..1295f04e5 100644
--- a/data_descriptors/variables/acmonz.oxprod.json
+++ b/data_descriptors/variables/acmonz.oxprod.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "acmonz.oxprod.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "acmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/acmonz.vmrox.json b/data_descriptors/variables/acmonz.vmrox.json
index e9993bd84..b945028f7 100644
--- a/data_descriptors/variables/acmonz.vmrox.json
+++ b/data_descriptors/variables/acmonz.vmrox.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "acmonz.vmrox.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "acmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae1hr.sfno2.json b/data_descriptors/variables/ae1hr.sfno2.json
index 202fec651..99ecdd65e 100644
--- a/data_descriptors/variables/ae1hr.sfno2.json
+++ b/data_descriptors/variables/ae1hr.sfno2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae1hr.sfno2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae1hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae1hr.sfo3.json b/data_descriptors/variables/ae1hr.sfo3.json
index ec8086231..4eb70ca80 100644
--- a/data_descriptors/variables/ae1hr.sfo3.json
+++ b/data_descriptors/variables/ae1hr.sfo3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae1hr.sfo3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae1hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae1hr.sfpm25.json b/data_descriptors/variables/ae1hr.sfpm25.json
index b4b385ba4..2ce476e7f 100644
--- a/data_descriptors/variables/ae1hr.sfpm25.json
+++ b/data_descriptors/variables/ae1hr.sfpm25.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae1hr.sfpm25.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae1hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae3hrpt.rsdscsaf.json b/data_descriptors/variables/ae3hrpt.rsdscsaf.json
index e7a65527d..5fbd0db17 100644
--- a/data_descriptors/variables/ae3hrpt.rsdscsaf.json
+++ b/data_descriptors/variables/ae3hrpt.rsdscsaf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrpt.rsdscsaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae3hrpt.rsdscsafbnd.json b/data_descriptors/variables/ae3hrpt.rsdscsafbnd.json
index fa86f77a1..fb2a77c78 100644
--- a/data_descriptors/variables/ae3hrpt.rsdscsafbnd.json
+++ b/data_descriptors/variables/ae3hrpt.rsdscsafbnd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrpt.rsdscsafbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae3hrpt.rsuscsaf.json b/data_descriptors/variables/ae3hrpt.rsuscsaf.json
index bcb44cafd..c06defff2 100644
--- a/data_descriptors/variables/ae3hrpt.rsuscsaf.json
+++ b/data_descriptors/variables/ae3hrpt.rsuscsaf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrpt.rsuscsaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae3hrpt.rsuscsafbnd.json b/data_descriptors/variables/ae3hrpt.rsuscsafbnd.json
index 412e7391f..9bc9d3fe2 100644
--- a/data_descriptors/variables/ae3hrpt.rsuscsafbnd.json
+++ b/data_descriptors/variables/ae3hrpt.rsuscsafbnd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrpt.rsuscsafbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae3hrpt.rsutcsaf.json b/data_descriptors/variables/ae3hrpt.rsutcsaf.json
index ebf28e387..0183d7219 100644
--- a/data_descriptors/variables/ae3hrpt.rsutcsaf.json
+++ b/data_descriptors/variables/ae3hrpt.rsutcsaf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrpt.rsutcsaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae3hrptlev.rsdcsaf.json b/data_descriptors/variables/ae3hrptlev.rsdcsaf.json
index a105fd568..3cc76db65 100644
--- a/data_descriptors/variables/ae3hrptlev.rsdcsaf.json
+++ b/data_descriptors/variables/ae3hrptlev.rsdcsaf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrptlev.rsdcsaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrptlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae3hrptlev.rsdcsafbnd.json b/data_descriptors/variables/ae3hrptlev.rsdcsafbnd.json
index 380b3c25d..53aac4cef 100644
--- a/data_descriptors/variables/ae3hrptlev.rsdcsafbnd.json
+++ b/data_descriptors/variables/ae3hrptlev.rsdcsafbnd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrptlev.rsdcsafbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrptlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae3hrptlev.rsucsaf.json b/data_descriptors/variables/ae3hrptlev.rsucsaf.json
index acc9b7ba7..24b2d2008 100644
--- a/data_descriptors/variables/ae3hrptlev.rsucsaf.json
+++ b/data_descriptors/variables/ae3hrptlev.rsucsaf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrptlev.rsucsaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrptlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae3hrptlev.rsucsafbnd.json b/data_descriptors/variables/ae3hrptlev.rsucsafbnd.json
index 7a7e51730..5cf4b5f27 100644
--- a/data_descriptors/variables/ae3hrptlev.rsucsafbnd.json
+++ b/data_descriptors/variables/ae3hrptlev.rsucsafbnd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrptlev.rsucsafbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrptlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae6hr.bldep.json b/data_descriptors/variables/ae6hr.bldep.json
index 63e5ade3c..ebb4cab1d 100644
--- a/data_descriptors/variables/ae6hr.bldep.json
+++ b/data_descriptors/variables/ae6hr.bldep.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae6hr.bldep.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae6hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae6hrpt.zg500.json b/data_descriptors/variables/ae6hrpt.zg500.json
index 8d0710609..c50e09475 100644
--- a/data_descriptors/variables/ae6hrpt.zg500.json
+++ b/data_descriptors/variables/ae6hrpt.zg500.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae6hrpt.zg500.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae6hrptlev.bs550aer.json b/data_descriptors/variables/ae6hrptlev.bs550aer.json
index 1d1c507e7..7d13f21af 100644
--- a/data_descriptors/variables/ae6hrptlev.bs550aer.json
+++ b/data_descriptors/variables/ae6hrptlev.bs550aer.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae6hrptlev.bs550aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae6hrptlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ae6hrptlev.ec550aer.json b/data_descriptors/variables/ae6hrptlev.ec550aer.json
index 4329cfacb..231741c6f 100644
--- a/data_descriptors/variables/ae6hrptlev.ec550aer.json
+++ b/data_descriptors/variables/ae6hrptlev.ec550aer.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae6hrptlev.ec550aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae6hrptlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aeday.cod.json b/data_descriptors/variables/aeday.cod.json
index c65e33c96..aa7999a80 100644
--- a/data_descriptors/variables/aeday.cod.json
+++ b/data_descriptors/variables/aeday.cod.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.cod.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aeday.maxpblz.json b/data_descriptors/variables/aeday.maxpblz.json
index 163eeeb9f..1e65d8b22 100644
--- a/data_descriptors/variables/aeday.maxpblz.json
+++ b/data_descriptors/variables/aeday.maxpblz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.maxpblz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aeday.minpblz.json b/data_descriptors/variables/aeday.minpblz.json
index fe507d8b7..7abd29bf7 100644
--- a/data_descriptors/variables/aeday.minpblz.json
+++ b/data_descriptors/variables/aeday.minpblz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.minpblz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aeday.od550aer.json b/data_descriptors/variables/aeday.od550aer.json
index db88c98c2..033441630 100644
--- a/data_descriptors/variables/aeday.od550aer.json
+++ b/data_descriptors/variables/aeday.od550aer.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.od550aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aeday.sfo3max.json b/data_descriptors/variables/aeday.sfo3max.json
index db3a2102c..6bd9ec784 100644
--- a/data_descriptors/variables/aeday.sfo3max.json
+++ b/data_descriptors/variables/aeday.sfo3max.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.sfo3max.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aeday.toz.json b/data_descriptors/variables/aeday.toz.json
index 15aae298b..9320cdeaf 100644
--- a/data_descriptors/variables/aeday.toz.json
+++ b/data_descriptors/variables/aeday.toz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.toz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aeday.ua10.json b/data_descriptors/variables/aeday.ua10.json
index 022795c57..964cb7b0b 100644
--- a/data_descriptors/variables/aeday.ua10.json
+++ b/data_descriptors/variables/aeday.ua10.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.ua10.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aeday.zg10.json b/data_descriptors/variables/aeday.zg10.json
index a4d15c87e..c53f0599e 100644
--- a/data_descriptors/variables/aeday.zg10.json
+++ b/data_descriptors/variables/aeday.zg10.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.zg10.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aeday.zg100.json b/data_descriptors/variables/aeday.zg100.json
index 3770024dd..68c717570 100644
--- a/data_descriptors/variables/aeday.zg100.json
+++ b/data_descriptors/variables/aeday.zg100.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.zg100.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aeday.zg500.json b/data_descriptors/variables/aeday.zg500.json
index 26a340245..326c7be89 100644
--- a/data_descriptors/variables/aeday.zg500.json
+++ b/data_descriptors/variables/aeday.zg500.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.zg500.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.abs550aer.json b/data_descriptors/variables/aemon.abs550aer.json
index ecef47cbc..4965dbd82 100644
--- a/data_descriptors/variables/aemon.abs550aer.json
+++ b/data_descriptors/variables/aemon.abs550aer.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.abs550aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.bldep.json b/data_descriptors/variables/aemon.bldep.json
index 3a4e5bc39..cb61a424f 100644
--- a/data_descriptors/variables/aemon.bldep.json
+++ b/data_descriptors/variables/aemon.bldep.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.bldep.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.ccn.json b/data_descriptors/variables/aemon.ccn.json
index 40df46168..8003f80a7 100644
--- a/data_descriptors/variables/aemon.ccn.json
+++ b/data_descriptors/variables/aemon.ccn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.ccn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.chepasoa.json b/data_descriptors/variables/aemon.chepasoa.json
index f329d7275..f1c2f9af4 100644
--- a/data_descriptors/variables/aemon.chepasoa.json
+++ b/data_descriptors/variables/aemon.chepasoa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.chepasoa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.chepsoa.json b/data_descriptors/variables/aemon.chepsoa.json
index b3d0b6ac1..17e34663b 100644
--- a/data_descriptors/variables/aemon.chepsoa.json
+++ b/data_descriptors/variables/aemon.chepsoa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.chepsoa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.cltc.json b/data_descriptors/variables/aemon.cltc.json
index 613e285e2..cc1936f8a 100644
--- a/data_descriptors/variables/aemon.cltc.json
+++ b/data_descriptors/variables/aemon.cltc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.cltc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.cod.json b/data_descriptors/variables/aemon.cod.json
index 7c0012ec6..690c0bee4 100644
--- a/data_descriptors/variables/aemon.cod.json
+++ b/data_descriptors/variables/aemon.cod.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.cod.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.depdust.json b/data_descriptors/variables/aemon.depdust.json
index a5d566e13..c7fbc7a7f 100644
--- a/data_descriptors/variables/aemon.depdust.json
+++ b/data_descriptors/variables/aemon.depdust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.depdust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.drybc.json b/data_descriptors/variables/aemon.drybc.json
index a66afb6f2..c7d33f758 100644
--- a/data_descriptors/variables/aemon.drybc.json
+++ b/data_descriptors/variables/aemon.drybc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.drybc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.drydust.json b/data_descriptors/variables/aemon.drydust.json
index f5f4dd6fa..b99a2095d 100644
--- a/data_descriptors/variables/aemon.drydust.json
+++ b/data_descriptors/variables/aemon.drydust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.drydust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.drynh3.json b/data_descriptors/variables/aemon.drynh3.json
index cd2b2619f..e96bcfd96 100644
--- a/data_descriptors/variables/aemon.drynh3.json
+++ b/data_descriptors/variables/aemon.drynh3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.drynh3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.drynh4.json b/data_descriptors/variables/aemon.drynh4.json
index 382d41178..8df3a7b07 100644
--- a/data_descriptors/variables/aemon.drynh4.json
+++ b/data_descriptors/variables/aemon.drynh4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.drynh4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.drynoy.json b/data_descriptors/variables/aemon.drynoy.json
index 3bc5b3478..fd37393c5 100644
--- a/data_descriptors/variables/aemon.drynoy.json
+++ b/data_descriptors/variables/aemon.drynoy.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.drynoy.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.dryo3.json b/data_descriptors/variables/aemon.dryo3.json
index 45e96b472..5ee87ebf6 100644
--- a/data_descriptors/variables/aemon.dryo3.json
+++ b/data_descriptors/variables/aemon.dryo3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.dryo3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.dryoa.json b/data_descriptors/variables/aemon.dryoa.json
index 2658847c2..6f2667a71 100644
--- a/data_descriptors/variables/aemon.dryoa.json
+++ b/data_descriptors/variables/aemon.dryoa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.dryoa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.dryso2.json b/data_descriptors/variables/aemon.dryso2.json
index 3bce787c2..fa2549366 100644
--- a/data_descriptors/variables/aemon.dryso2.json
+++ b/data_descriptors/variables/aemon.dryso2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.dryso2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.dryso4.json b/data_descriptors/variables/aemon.dryso4.json
index 80047a544..13fde346e 100644
--- a/data_descriptors/variables/aemon.dryso4.json
+++ b/data_descriptors/variables/aemon.dryso4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.dryso4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.dryss.json b/data_descriptors/variables/aemon.dryss.json
index 1a11de1d7..623ec53f8 100644
--- a/data_descriptors/variables/aemon.dryss.json
+++ b/data_descriptors/variables/aemon.dryss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.dryss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.emiaco.json b/data_descriptors/variables/aemon.emiaco.json
index 3d991650b..e9f893b96 100644
--- a/data_descriptors/variables/aemon.emiaco.json
+++ b/data_descriptors/variables/aemon.emiaco.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emiaco.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.emianox.json b/data_descriptors/variables/aemon.emianox.json
index ac04f8674..f7ea690b4 100644
--- a/data_descriptors/variables/aemon.emianox.json
+++ b/data_descriptors/variables/aemon.emianox.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emianox.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.emiaoa.json b/data_descriptors/variables/aemon.emiaoa.json
index 74873a5f5..c9ef7e2c9 100644
--- a/data_descriptors/variables/aemon.emiaoa.json
+++ b/data_descriptors/variables/aemon.emiaoa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emiaoa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.emibc.json b/data_descriptors/variables/aemon.emibc.json
index 008ece126..bca2d194a 100644
--- a/data_descriptors/variables/aemon.emibc.json
+++ b/data_descriptors/variables/aemon.emibc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emibc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.emibvoc.json b/data_descriptors/variables/aemon.emibvoc.json
index 34b0ea44d..eb66a4f29 100644
--- a/data_descriptors/variables/aemon.emibvoc.json
+++ b/data_descriptors/variables/aemon.emibvoc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emibvoc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.emico.json b/data_descriptors/variables/aemon.emico.json
index 6efba61b5..027c7defc 100644
--- a/data_descriptors/variables/aemon.emico.json
+++ b/data_descriptors/variables/aemon.emico.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emico.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.emidms.json b/data_descriptors/variables/aemon.emidms.json
index 19e5021a5..91de4ab7c 100644
--- a/data_descriptors/variables/aemon.emidms.json
+++ b/data_descriptors/variables/aemon.emidms.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emidms.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.emidust.json b/data_descriptors/variables/aemon.emidust.json
index a4cfb3fdc..b491ffaed 100644
--- a/data_descriptors/variables/aemon.emidust.json
+++ b/data_descriptors/variables/aemon.emidust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emidust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.emiisop.json b/data_descriptors/variables/aemon.emiisop.json
index c865a6d3b..685c8d781 100644
--- a/data_descriptors/variables/aemon.emiisop.json
+++ b/data_descriptors/variables/aemon.emiisop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emiisop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.eminh3.json b/data_descriptors/variables/aemon.eminh3.json
index 8e29570cf..23e8a5aaa 100644
--- a/data_descriptors/variables/aemon.eminh3.json
+++ b/data_descriptors/variables/aemon.eminh3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.eminh3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.eminox.json b/data_descriptors/variables/aemon.eminox.json
index 21a9c825e..42dd7a144 100644
--- a/data_descriptors/variables/aemon.eminox.json
+++ b/data_descriptors/variables/aemon.eminox.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.eminox.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.emioa.json b/data_descriptors/variables/aemon.emioa.json
index 8010ce1ad..02e24b996 100644
--- a/data_descriptors/variables/aemon.emioa.json
+++ b/data_descriptors/variables/aemon.emioa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emioa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.emiso2.json b/data_descriptors/variables/aemon.emiso2.json
index 17e82e865..ccfd0a08d 100644
--- a/data_descriptors/variables/aemon.emiso2.json
+++ b/data_descriptors/variables/aemon.emiso2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emiso2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.emiso4.json b/data_descriptors/variables/aemon.emiso4.json
index 2190b391e..acea28e18 100644
--- a/data_descriptors/variables/aemon.emiso4.json
+++ b/data_descriptors/variables/aemon.emiso4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emiso4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.emiss.json b/data_descriptors/variables/aemon.emiss.json
index cb35725e3..2db3148d4 100644
--- a/data_descriptors/variables/aemon.emiss.json
+++ b/data_descriptors/variables/aemon.emiss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emiss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.emivoc.json b/data_descriptors/variables/aemon.emivoc.json
index 6001248dd..9861c9d37 100644
--- a/data_descriptors/variables/aemon.emivoc.json
+++ b/data_descriptors/variables/aemon.emivoc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emivoc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.lwp.json b/data_descriptors/variables/aemon.lwp.json
index e982be854..7babc65fb 100644
--- a/data_descriptors/variables/aemon.lwp.json
+++ b/data_descriptors/variables/aemon.lwp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.lwp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.mmrno3.json b/data_descriptors/variables/aemon.mmrno3.json
index cfea06bac..e704d0685 100644
--- a/data_descriptors/variables/aemon.mmrno3.json
+++ b/data_descriptors/variables/aemon.mmrno3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.mmrno3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.od440aer.json b/data_descriptors/variables/aemon.od440aer.json
index 8586e5434..1edd5877f 100644
--- a/data_descriptors/variables/aemon.od440aer.json
+++ b/data_descriptors/variables/aemon.od440aer.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od440aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.od550aer.json b/data_descriptors/variables/aemon.od550aer.json
index 0b1cbcf20..6ca82441b 100644
--- a/data_descriptors/variables/aemon.od550aer.json
+++ b/data_descriptors/variables/aemon.od550aer.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od550aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.od550aerh2o.json b/data_descriptors/variables/aemon.od550aerh2o.json
index 7e43144b2..ee645e9c8 100644
--- a/data_descriptors/variables/aemon.od550aerh2o.json
+++ b/data_descriptors/variables/aemon.od550aerh2o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od550aerh2o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.od550bb.json b/data_descriptors/variables/aemon.od550bb.json
index ae93c6629..4aa1390e5 100644
--- a/data_descriptors/variables/aemon.od550bb.json
+++ b/data_descriptors/variables/aemon.od550bb.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od550bb.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.od550bc.json b/data_descriptors/variables/aemon.od550bc.json
index ac97104df..512dfba69 100644
--- a/data_descriptors/variables/aemon.od550bc.json
+++ b/data_descriptors/variables/aemon.od550bc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od550bc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.od550csaer.json b/data_descriptors/variables/aemon.od550csaer.json
index 3d435b83e..0b7e75a29 100644
--- a/data_descriptors/variables/aemon.od550csaer.json
+++ b/data_descriptors/variables/aemon.od550csaer.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od550csaer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.od550dust.json b/data_descriptors/variables/aemon.od550dust.json
index bc5ae07cc..c67b00159 100644
--- a/data_descriptors/variables/aemon.od550dust.json
+++ b/data_descriptors/variables/aemon.od550dust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od550dust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.od550lt1aer.json b/data_descriptors/variables/aemon.od550lt1aer.json
index 55ec0bebc..f7c91ff21 100644
--- a/data_descriptors/variables/aemon.od550lt1aer.json
+++ b/data_descriptors/variables/aemon.od550lt1aer.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od550lt1aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.od550no3.json b/data_descriptors/variables/aemon.od550no3.json
index c5eb96e0e..6c87116f2 100644
--- a/data_descriptors/variables/aemon.od550no3.json
+++ b/data_descriptors/variables/aemon.od550no3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od550no3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.od550oa.json b/data_descriptors/variables/aemon.od550oa.json
index 101657212..eda336ad5 100644
--- a/data_descriptors/variables/aemon.od550oa.json
+++ b/data_descriptors/variables/aemon.od550oa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od550oa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.od550so4.json b/data_descriptors/variables/aemon.od550so4.json
index ed490a5bb..2ca7df04a 100644
--- a/data_descriptors/variables/aemon.od550so4.json
+++ b/data_descriptors/variables/aemon.od550so4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od550so4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.od550soa.json b/data_descriptors/variables/aemon.od550soa.json
index 71911c902..8f577a153 100644
--- a/data_descriptors/variables/aemon.od550soa.json
+++ b/data_descriptors/variables/aemon.od550soa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od550soa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.od550ss.json b/data_descriptors/variables/aemon.od550ss.json
index 40145fd67..a4e2e8d4e 100644
--- a/data_descriptors/variables/aemon.od550ss.json
+++ b/data_descriptors/variables/aemon.od550ss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od550ss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.od870aer.json b/data_descriptors/variables/aemon.od870aer.json
index 4ced9978d..a93e02d4d 100644
--- a/data_descriptors/variables/aemon.od870aer.json
+++ b/data_descriptors/variables/aemon.od870aer.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od870aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.pod0.json b/data_descriptors/variables/aemon.pod0.json
index 1607483d5..c26eb9d9a 100644
--- a/data_descriptors/variables/aemon.pod0.json
+++ b/data_descriptors/variables/aemon.pod0.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.pod0.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.ptp.json b/data_descriptors/variables/aemon.ptp.json
index 09961fd10..94b317869 100644
--- a/data_descriptors/variables/aemon.ptp.json
+++ b/data_descriptors/variables/aemon.ptp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.ptp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.reffclwtop.json b/data_descriptors/variables/aemon.reffclwtop.json
index f7da15943..a8f776511 100644
--- a/data_descriptors/variables/aemon.reffclwtop.json
+++ b/data_descriptors/variables/aemon.reffclwtop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.reffclwtop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.rlutaf.json b/data_descriptors/variables/aemon.rlutaf.json
index 1c0fcafa5..1bcca8f78 100644
--- a/data_descriptors/variables/aemon.rlutaf.json
+++ b/data_descriptors/variables/aemon.rlutaf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.rlutaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.rlutcsaf.json b/data_descriptors/variables/aemon.rlutcsaf.json
index 2a698c25f..00d4bc9b3 100644
--- a/data_descriptors/variables/aemon.rlutcsaf.json
+++ b/data_descriptors/variables/aemon.rlutcsaf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.rlutcsaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.rsutaf.json b/data_descriptors/variables/aemon.rsutaf.json
index 215aa4e7b..9dd19fce2 100644
--- a/data_descriptors/variables/aemon.rsutaf.json
+++ b/data_descriptors/variables/aemon.rsutaf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.rsutaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.rsutcsaf.json b/data_descriptors/variables/aemon.rsutcsaf.json
index 5a4da2767..d00ee73be 100644
--- a/data_descriptors/variables/aemon.rsutcsaf.json
+++ b/data_descriptors/variables/aemon.rsutcsaf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.rsutcsaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.sedustci.json b/data_descriptors/variables/aemon.sedustci.json
index affd22c4d..8b9ef0cb1 100644
--- a/data_descriptors/variables/aemon.sedustci.json
+++ b/data_descriptors/variables/aemon.sedustci.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.sedustci.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.tatp.json b/data_descriptors/variables/aemon.tatp.json
index 63e14fd26..5c79b6cdb 100644
--- a/data_descriptors/variables/aemon.tatp.json
+++ b/data_descriptors/variables/aemon.tatp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.tatp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.tntrl27.json b/data_descriptors/variables/aemon.tntrl27.json
index aa68829b2..e784c8ff1 100644
--- a/data_descriptors/variables/aemon.tntrl27.json
+++ b/data_descriptors/variables/aemon.tntrl27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.tntrl27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.tntrs27.json b/data_descriptors/variables/aemon.tntrs27.json
index 780bf85e7..3e5cfc3d9 100644
--- a/data_descriptors/variables/aemon.tntrs27.json
+++ b/data_descriptors/variables/aemon.tntrs27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.tntrs27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.toz.json b/data_descriptors/variables/aemon.toz.json
index 11632ed6a..85bebd69a 100644
--- a/data_descriptors/variables/aemon.toz.json
+++ b/data_descriptors/variables/aemon.toz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.toz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.tropoz.json b/data_descriptors/variables/aemon.tropoz.json
index 1e2be1a0a..c22e7afc0 100644
--- a/data_descriptors/variables/aemon.tropoz.json
+++ b/data_descriptors/variables/aemon.tropoz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.tropoz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.ttop.json b/data_descriptors/variables/aemon.ttop.json
index a7cc59109..072b9f034 100644
--- a/data_descriptors/variables/aemon.ttop.json
+++ b/data_descriptors/variables/aemon.ttop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.ttop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.wetbc.json b/data_descriptors/variables/aemon.wetbc.json
index 8d31b9295..559f800ab 100644
--- a/data_descriptors/variables/aemon.wetbc.json
+++ b/data_descriptors/variables/aemon.wetbc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.wetbc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.wetdust.json b/data_descriptors/variables/aemon.wetdust.json
index 65b95a899..bccd17ee2 100644
--- a/data_descriptors/variables/aemon.wetdust.json
+++ b/data_descriptors/variables/aemon.wetdust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.wetdust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.wetnh3.json b/data_descriptors/variables/aemon.wetnh3.json
index 8f8af5f8e..14f417070 100644
--- a/data_descriptors/variables/aemon.wetnh3.json
+++ b/data_descriptors/variables/aemon.wetnh3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.wetnh3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.wetnh4.json b/data_descriptors/variables/aemon.wetnh4.json
index 16b2ccf33..3ea88e33b 100644
--- a/data_descriptors/variables/aemon.wetnh4.json
+++ b/data_descriptors/variables/aemon.wetnh4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.wetnh4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.wetnoy.json b/data_descriptors/variables/aemon.wetnoy.json
index e437cfede..651e2a473 100644
--- a/data_descriptors/variables/aemon.wetnoy.json
+++ b/data_descriptors/variables/aemon.wetnoy.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.wetnoy.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.wetoa.json b/data_descriptors/variables/aemon.wetoa.json
index 3b23236d0..76f9d324b 100644
--- a/data_descriptors/variables/aemon.wetoa.json
+++ b/data_descriptors/variables/aemon.wetoa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.wetoa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.wetso2.json b/data_descriptors/variables/aemon.wetso2.json
index 9a546aeca..fa1076419 100644
--- a/data_descriptors/variables/aemon.wetso2.json
+++ b/data_descriptors/variables/aemon.wetso2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.wetso2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.wetso4.json b/data_descriptors/variables/aemon.wetso4.json
index 1d4746219..a269d69ce 100644
--- a/data_descriptors/variables/aemon.wetso4.json
+++ b/data_descriptors/variables/aemon.wetso4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.wetso4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.wetss.json b/data_descriptors/variables/aemon.wetss.json
index b138d1fb3..249ee21c3 100644
--- a/data_descriptors/variables/aemon.wetss.json
+++ b/data_descriptors/variables/aemon.wetss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.wetss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemon.ztp.json b/data_descriptors/variables/aemon.ztp.json
index 31d3092e9..7e6264eb0 100644
--- a/data_descriptors/variables/aemon.ztp.json
+++ b/data_descriptors/variables/aemon.ztp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.ztp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.airmass.json b/data_descriptors/variables/aemonlev.airmass.json
index 13dee7d5e..ba6063c03 100644
--- a/data_descriptors/variables/aemonlev.airmass.json
+++ b/data_descriptors/variables/aemonlev.airmass.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.airmass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.aoanh.json b/data_descriptors/variables/aemonlev.aoanh.json
index c482e300e..eebada82b 100644
--- a/data_descriptors/variables/aemonlev.aoanh.json
+++ b/data_descriptors/variables/aemonlev.aoanh.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.aoanh.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.c2h2.json b/data_descriptors/variables/aemonlev.c2h2.json
index 420233ddf..9595ae623 100644
--- a/data_descriptors/variables/aemonlev.c2h2.json
+++ b/data_descriptors/variables/aemonlev.c2h2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.c2h2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.c2h6.json b/data_descriptors/variables/aemonlev.c2h6.json
index 8eb09d685..b3ebed699 100644
--- a/data_descriptors/variables/aemonlev.c2h6.json
+++ b/data_descriptors/variables/aemonlev.c2h6.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.c2h6.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.c3h6.json b/data_descriptors/variables/aemonlev.c3h6.json
index 6a9003c16..915782625 100644
--- a/data_descriptors/variables/aemonlev.c3h6.json
+++ b/data_descriptors/variables/aemonlev.c3h6.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.c3h6.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.c3h8.json b/data_descriptors/variables/aemonlev.c3h8.json
index a084020a6..9bb2de35e 100644
--- a/data_descriptors/variables/aemonlev.c3h8.json
+++ b/data_descriptors/variables/aemonlev.c3h8.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.c3h8.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.cdnc.json b/data_descriptors/variables/aemonlev.cdnc.json
index fe777432f..b20a85c4f 100644
--- a/data_descriptors/variables/aemonlev.cdnc.json
+++ b/data_descriptors/variables/aemonlev.cdnc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.cdnc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.ch3coch3.json b/data_descriptors/variables/aemonlev.ch3coch3.json
index e95741e61..c0b19455a 100644
--- a/data_descriptors/variables/aemonlev.ch3coch3.json
+++ b/data_descriptors/variables/aemonlev.ch3coch3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.ch3coch3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.ch4.json b/data_descriptors/variables/aemonlev.ch4.json
index ce41d4e1f..562b8bf94 100644
--- a/data_descriptors/variables/aemonlev.ch4.json
+++ b/data_descriptors/variables/aemonlev.ch4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.ch4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.cheaqpso4.json b/data_descriptors/variables/aemonlev.cheaqpso4.json
index 307241318..7eebd315b 100644
--- a/data_descriptors/variables/aemonlev.cheaqpso4.json
+++ b/data_descriptors/variables/aemonlev.cheaqpso4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.cheaqpso4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.chegpso4.json b/data_descriptors/variables/aemonlev.chegpso4.json
index 82289901f..cafec7ace 100644
--- a/data_descriptors/variables/aemonlev.chegpso4.json
+++ b/data_descriptors/variables/aemonlev.chegpso4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.chegpso4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.co.json b/data_descriptors/variables/aemonlev.co.json
index 9d5007dbb..6c86895b5 100644
--- a/data_descriptors/variables/aemonlev.co.json
+++ b/data_descriptors/variables/aemonlev.co.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.co.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.co2.json b/data_descriptors/variables/aemonlev.co2.json
index 6cebffe66..f3de32598 100644
--- a/data_descriptors/variables/aemonlev.co2.json
+++ b/data_descriptors/variables/aemonlev.co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.dms.json b/data_descriptors/variables/aemonlev.dms.json
index cd9db7a2a..276dd388c 100644
--- a/data_descriptors/variables/aemonlev.dms.json
+++ b/data_descriptors/variables/aemonlev.dms.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.dms.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.ec550aer.json b/data_descriptors/variables/aemonlev.ec550aer.json
index d66080999..04ccefbc5 100644
--- a/data_descriptors/variables/aemonlev.ec550aer.json
+++ b/data_descriptors/variables/aemonlev.ec550aer.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.ec550aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.emilnox.json b/data_descriptors/variables/aemonlev.emilnox.json
index d1f3ac46e..f0e1e8bfe 100644
--- a/data_descriptors/variables/aemonlev.emilnox.json
+++ b/data_descriptors/variables/aemonlev.emilnox.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.emilnox.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.h2o.json b/data_descriptors/variables/aemonlev.h2o.json
index 83f446a14..cd5a8ccb5 100644
--- a/data_descriptors/variables/aemonlev.h2o.json
+++ b/data_descriptors/variables/aemonlev.h2o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.h2o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.hcho.json b/data_descriptors/variables/aemonlev.hcho.json
index 1ae4736a6..a8dd97f01 100644
--- a/data_descriptors/variables/aemonlev.hcho.json
+++ b/data_descriptors/variables/aemonlev.hcho.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.hcho.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.hcl.json b/data_descriptors/variables/aemonlev.hcl.json
index 4cada0277..ad66c0c13 100644
--- a/data_descriptors/variables/aemonlev.hcl.json
+++ b/data_descriptors/variables/aemonlev.hcl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.hcl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.hno3.json b/data_descriptors/variables/aemonlev.hno3.json
index f48aeee89..e2858cacd 100644
--- a/data_descriptors/variables/aemonlev.hno3.json
+++ b/data_descriptors/variables/aemonlev.hno3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.hno3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.isop.json b/data_descriptors/variables/aemonlev.isop.json
index 5a7ab1b63..43f609f7a 100644
--- a/data_descriptors/variables/aemonlev.isop.json
+++ b/data_descriptors/variables/aemonlev.isop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.isop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.jno2.json b/data_descriptors/variables/aemonlev.jno2.json
index c210d1059..123673a56 100644
--- a/data_descriptors/variables/aemonlev.jno2.json
+++ b/data_descriptors/variables/aemonlev.jno2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.jno2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.lossch4.json b/data_descriptors/variables/aemonlev.lossch4.json
index ec14420b9..c49c1bc24 100644
--- a/data_descriptors/variables/aemonlev.lossch4.json
+++ b/data_descriptors/variables/aemonlev.lossch4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.lossch4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.lossco.json b/data_descriptors/variables/aemonlev.lossco.json
index 6e87866e5..8ad482c5e 100644
--- a/data_descriptors/variables/aemonlev.lossco.json
+++ b/data_descriptors/variables/aemonlev.lossco.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.lossco.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.lossn2o.json b/data_descriptors/variables/aemonlev.lossn2o.json
index 487b3a79b..0cf73c88c 100644
--- a/data_descriptors/variables/aemonlev.lossn2o.json
+++ b/data_descriptors/variables/aemonlev.lossn2o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.lossn2o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.mmraerh2o.json b/data_descriptors/variables/aemonlev.mmraerh2o.json
index f7abbb7f5..af11cb42b 100644
--- a/data_descriptors/variables/aemonlev.mmraerh2o.json
+++ b/data_descriptors/variables/aemonlev.mmraerh2o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.mmraerh2o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.mmrbc.json b/data_descriptors/variables/aemonlev.mmrbc.json
index 2418b5407..3b198900b 100644
--- a/data_descriptors/variables/aemonlev.mmrbc.json
+++ b/data_descriptors/variables/aemonlev.mmrbc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.mmrbc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.mmrdust.json b/data_descriptors/variables/aemonlev.mmrdust.json
index 3b396e100..455a5c378 100644
--- a/data_descriptors/variables/aemonlev.mmrdust.json
+++ b/data_descriptors/variables/aemonlev.mmrdust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.mmrdust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.mmrnh4.json b/data_descriptors/variables/aemonlev.mmrnh4.json
index d3bda1c85..54827ca53 100644
--- a/data_descriptors/variables/aemonlev.mmrnh4.json
+++ b/data_descriptors/variables/aemonlev.mmrnh4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.mmrnh4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.mmrno3.json b/data_descriptors/variables/aemonlev.mmrno3.json
index 5f850c619..4cfaadf6e 100644
--- a/data_descriptors/variables/aemonlev.mmrno3.json
+++ b/data_descriptors/variables/aemonlev.mmrno3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.mmrno3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.mmroa.json b/data_descriptors/variables/aemonlev.mmroa.json
index 7416f86ef..cc609b95f 100644
--- a/data_descriptors/variables/aemonlev.mmroa.json
+++ b/data_descriptors/variables/aemonlev.mmroa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.mmroa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.mmrpm1.json b/data_descriptors/variables/aemonlev.mmrpm1.json
index 73debfef4..d296d70fa 100644
--- a/data_descriptors/variables/aemonlev.mmrpm1.json
+++ b/data_descriptors/variables/aemonlev.mmrpm1.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.mmrpm1.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.mmrpm10.json b/data_descriptors/variables/aemonlev.mmrpm10.json
index 95b394af8..14a74634c 100644
--- a/data_descriptors/variables/aemonlev.mmrpm10.json
+++ b/data_descriptors/variables/aemonlev.mmrpm10.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.mmrpm10.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.mmrpm2p5.json b/data_descriptors/variables/aemonlev.mmrpm2p5.json
index e72e7e505..b802566b9 100644
--- a/data_descriptors/variables/aemonlev.mmrpm2p5.json
+++ b/data_descriptors/variables/aemonlev.mmrpm2p5.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.mmrpm2p5.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.mmrso4.json b/data_descriptors/variables/aemonlev.mmrso4.json
index 4636e2ed2..8836b9fbf 100644
--- a/data_descriptors/variables/aemonlev.mmrso4.json
+++ b/data_descriptors/variables/aemonlev.mmrso4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.mmrso4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.mmrsoa.json b/data_descriptors/variables/aemonlev.mmrsoa.json
index 211e1d6b0..2891b9655 100644
--- a/data_descriptors/variables/aemonlev.mmrsoa.json
+++ b/data_descriptors/variables/aemonlev.mmrsoa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.mmrsoa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.mmrss.json b/data_descriptors/variables/aemonlev.mmrss.json
index 0af29a640..fbd0fdec5 100644
--- a/data_descriptors/variables/aemonlev.mmrss.json
+++ b/data_descriptors/variables/aemonlev.mmrss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.mmrss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.n2o.json b/data_descriptors/variables/aemonlev.n2o.json
index 249e9ea2e..69228658d 100644
--- a/data_descriptors/variables/aemonlev.n2o.json
+++ b/data_descriptors/variables/aemonlev.n2o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.n2o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.nh50.json b/data_descriptors/variables/aemonlev.nh50.json
index e7852f187..28e2de756 100644
--- a/data_descriptors/variables/aemonlev.nh50.json
+++ b/data_descriptors/variables/aemonlev.nh50.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.nh50.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.no.json b/data_descriptors/variables/aemonlev.no.json
index 834e19aaf..d7176618b 100644
--- a/data_descriptors/variables/aemonlev.no.json
+++ b/data_descriptors/variables/aemonlev.no.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.no.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.no2.json b/data_descriptors/variables/aemonlev.no2.json
index 9eddda03e..78b6dffcd 100644
--- a/data_descriptors/variables/aemonlev.no2.json
+++ b/data_descriptors/variables/aemonlev.no2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.no2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.o3.json b/data_descriptors/variables/aemonlev.o3.json
index dc14845e5..20a78490d 100644
--- a/data_descriptors/variables/aemonlev.o3.json
+++ b/data_descriptors/variables/aemonlev.o3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.o3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.o3loss.json b/data_descriptors/variables/aemonlev.o3loss.json
index 2564cfd12..7e9320970 100644
--- a/data_descriptors/variables/aemonlev.o3loss.json
+++ b/data_descriptors/variables/aemonlev.o3loss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.o3loss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.o3prod.json b/data_descriptors/variables/aemonlev.o3prod.json
index a837e09c0..e87b9ab89 100644
--- a/data_descriptors/variables/aemonlev.o3prod.json
+++ b/data_descriptors/variables/aemonlev.o3prod.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.o3prod.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.o3ste.json b/data_descriptors/variables/aemonlev.o3ste.json
index e9c1b95c7..2910e8253 100644
--- a/data_descriptors/variables/aemonlev.o3ste.json
+++ b/data_descriptors/variables/aemonlev.o3ste.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.o3ste.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.oh.json b/data_descriptors/variables/aemonlev.oh.json
index e17174a2a..d6c31b540 100644
--- a/data_descriptors/variables/aemonlev.oh.json
+++ b/data_descriptors/variables/aemonlev.oh.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.oh.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.pan.json b/data_descriptors/variables/aemonlev.pan.json
index e478108a5..89186738e 100644
--- a/data_descriptors/variables/aemonlev.pan.json
+++ b/data_descriptors/variables/aemonlev.pan.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.pan.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.pfull.json b/data_descriptors/variables/aemonlev.pfull.json
index 06773c85a..943550ab5 100644
--- a/data_descriptors/variables/aemonlev.pfull.json
+++ b/data_descriptors/variables/aemonlev.pfull.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.pfull.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.phalf.json b/data_descriptors/variables/aemonlev.phalf.json
index 1cf42b167..08ee056e7 100644
--- a/data_descriptors/variables/aemonlev.phalf.json
+++ b/data_descriptors/variables/aemonlev.phalf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.phalf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.photo1d.json b/data_descriptors/variables/aemonlev.photo1d.json
index afbf4f7d4..9024f3c28 100644
--- a/data_descriptors/variables/aemonlev.photo1d.json
+++ b/data_descriptors/variables/aemonlev.photo1d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.photo1d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.so2.json b/data_descriptors/variables/aemonlev.so2.json
index 3d9db7a96..c02a4235e 100644
--- a/data_descriptors/variables/aemonlev.so2.json
+++ b/data_descriptors/variables/aemonlev.so2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.so2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.tntrl.json b/data_descriptors/variables/aemonlev.tntrl.json
index b0c493b2a..ef26318d9 100644
--- a/data_descriptors/variables/aemonlev.tntrl.json
+++ b/data_descriptors/variables/aemonlev.tntrl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.tntrl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.tntrs.json b/data_descriptors/variables/aemonlev.tntrs.json
index 8a235b324..949c02a7d 100644
--- a/data_descriptors/variables/aemonlev.tntrs.json
+++ b/data_descriptors/variables/aemonlev.tntrs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.tntrs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.ua.json b/data_descriptors/variables/aemonlev.ua.json
index a4ad0f45c..1d0abc512 100644
--- a/data_descriptors/variables/aemonlev.ua.json
+++ b/data_descriptors/variables/aemonlev.ua.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.ua.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.va.json b/data_descriptors/variables/aemonlev.va.json
index ed63f3376..3f9277d90 100644
--- a/data_descriptors/variables/aemonlev.va.json
+++ b/data_descriptors/variables/aemonlev.va.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.va.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonlev.wa.json b/data_descriptors/variables/aemonlev.wa.json
index 6c4cc943e..d71127131 100644
--- a/data_descriptors/variables/aemonlev.wa.json
+++ b/data_descriptors/variables/aemonlev.wa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.wa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.bry.json b/data_descriptors/variables/aemonz.bry.json
index 8428c3f94..479a3228b 100644
--- a/data_descriptors/variables/aemonz.bry.json
+++ b/data_descriptors/variables/aemonz.bry.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.bry.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.ch4.json b/data_descriptors/variables/aemonz.ch4.json
index e4b5193c9..88127fcaa 100644
--- a/data_descriptors/variables/aemonz.ch4.json
+++ b/data_descriptors/variables/aemonz.ch4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.ch4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.cly.json b/data_descriptors/variables/aemonz.cly.json
index 3d707d1a1..6c5dcb125 100644
--- a/data_descriptors/variables/aemonz.cly.json
+++ b/data_descriptors/variables/aemonz.cly.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.cly.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.h2o.json b/data_descriptors/variables/aemonz.h2o.json
index 383506106..f8ddedccc 100644
--- a/data_descriptors/variables/aemonz.h2o.json
+++ b/data_descriptors/variables/aemonz.h2o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.h2o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.hcl.json b/data_descriptors/variables/aemonz.hcl.json
index 531999ede..82eb4aecc 100644
--- a/data_descriptors/variables/aemonz.hcl.json
+++ b/data_descriptors/variables/aemonz.hcl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.hcl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.hno3.json b/data_descriptors/variables/aemonz.hno3.json
index 5e521f34b..5f7625e02 100644
--- a/data_descriptors/variables/aemonz.hno3.json
+++ b/data_descriptors/variables/aemonz.hno3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.hno3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.ho2.json b/data_descriptors/variables/aemonz.ho2.json
index c33cf7b1a..aa8e57574 100644
--- a/data_descriptors/variables/aemonz.ho2.json
+++ b/data_descriptors/variables/aemonz.ho2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.ho2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.meanage.json b/data_descriptors/variables/aemonz.meanage.json
index 62c13d53e..127f7ae59 100644
--- a/data_descriptors/variables/aemonz.meanage.json
+++ b/data_descriptors/variables/aemonz.meanage.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.meanage.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.n2o.json b/data_descriptors/variables/aemonz.n2o.json
index 359b27ff6..6becc4a63 100644
--- a/data_descriptors/variables/aemonz.n2o.json
+++ b/data_descriptors/variables/aemonz.n2o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.n2o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.noy.json b/data_descriptors/variables/aemonz.noy.json
index 6b3a69e72..fc79ac5ee 100644
--- a/data_descriptors/variables/aemonz.noy.json
+++ b/data_descriptors/variables/aemonz.noy.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.noy.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.o3.json b/data_descriptors/variables/aemonz.o3.json
index 77a93a461..b678cfaf4 100644
--- a/data_descriptors/variables/aemonz.o3.json
+++ b/data_descriptors/variables/aemonz.o3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.o3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.oh.json b/data_descriptors/variables/aemonz.oh.json
index 40ddd9ad6..6babceeb1 100644
--- a/data_descriptors/variables/aemonz.oh.json
+++ b/data_descriptors/variables/aemonz.oh.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.oh.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.ta.json b/data_descriptors/variables/aemonz.ta.json
index 46df20704..c2347bab4 100644
--- a/data_descriptors/variables/aemonz.ta.json
+++ b/data_descriptors/variables/aemonz.ta.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.ta.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.tntrl.json b/data_descriptors/variables/aemonz.tntrl.json
index 4dd407042..06f86902a 100644
--- a/data_descriptors/variables/aemonz.tntrl.json
+++ b/data_descriptors/variables/aemonz.tntrl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.tntrl.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.tntrs.json b/data_descriptors/variables/aemonz.tntrs.json
index cefb7dd99..a4d138978 100644
--- a/data_descriptors/variables/aemonz.tntrs.json
+++ b/data_descriptors/variables/aemonz.tntrs.json
@@ -2,7 +2,7 @@
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   "id": "aemonz.tntrs.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.ua.json b/data_descriptors/variables/aemonz.ua.json
index af4b90b35..6ba0d4986 100644
--- a/data_descriptors/variables/aemonz.ua.json
+++ b/data_descriptors/variables/aemonz.ua.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.ua.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.va.json b/data_descriptors/variables/aemonz.va.json
index 10545643b..28c1320b0 100644
--- a/data_descriptors/variables/aemonz.va.json
+++ b/data_descriptors/variables/aemonz.va.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonz.va.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aemonz.vt100.json b/data_descriptors/variables/aemonz.vt100.json
index a78fae765..669727f6f 100644
--- a/data_descriptors/variables/aemonz.vt100.json
+++ b/data_descriptors/variables/aemonz.vt100.json
@@ -2,7 +2,7 @@
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   "id": "aemonz.vt100.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aesubhrpt.bldep.json b/data_descriptors/variables/aesubhrpt.bldep.json
index ebc72467c..87edae1c2 100644
--- a/data_descriptors/variables/aesubhrpt.bldep.json
+++ b/data_descriptors/variables/aesubhrpt.bldep.json
@@ -2,7 +2,7 @@
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   "id": "aesubhrpt.bldep.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aesubhrptsite.tntrl.json b/data_descriptors/variables/aesubhrptsite.tntrl.json
index b60f3050b..dc22d9d45 100644
--- a/data_descriptors/variables/aesubhrptsite.tntrl.json
+++ b/data_descriptors/variables/aesubhrptsite.tntrl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aesubhrptsite.tntrl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/aesubhrptsite.tntrs.json b/data_descriptors/variables/aesubhrptsite.tntrs.json
index fafe0aeb7..696042464 100644
--- a/data_descriptors/variables/aesubhrptsite.tntrs.json
+++ b/data_descriptors/variables/aesubhrptsite.tntrs.json
@@ -2,7 +2,7 @@
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   "id": "aesubhrptsite.tntrs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hr.pr.json b/data_descriptors/variables/ap1hr.pr.json
index 9f8752b10..7c159c62f 100644
--- a/data_descriptors/variables/ap1hr.pr.json
+++ b/data_descriptors/variables/ap1hr.pr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap1hr.pr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hr.prc.json b/data_descriptors/variables/ap1hr.prc.json
index 00b0e30a4..49679b39a 100644
--- a/data_descriptors/variables/ap1hr.prc.json
+++ b/data_descriptors/variables/ap1hr.prc.json
@@ -2,7 +2,7 @@
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   "id": "ap1hr.prc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hr.ps.json b/data_descriptors/variables/ap1hr.ps.json
index 688125bd3..068730b01 100644
--- a/data_descriptors/variables/ap1hr.ps.json
+++ b/data_descriptors/variables/ap1hr.ps.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hr.tas.json b/data_descriptors/variables/ap1hr.tas.json
index b40684a6a..fdf337094 100644
--- a/data_descriptors/variables/ap1hr.tas.json
+++ b/data_descriptors/variables/ap1hr.tas.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hrpt.psl.json b/data_descriptors/variables/ap1hrpt.psl.json
index 752421f04..abd33992d 100644
--- a/data_descriptors/variables/ap1hrpt.psl.json
+++ b/data_descriptors/variables/ap1hrpt.psl.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hrpt.rlut.json b/data_descriptors/variables/ap1hrpt.rlut.json
index dacca6ddf..2de06521b 100644
--- a/data_descriptors/variables/ap1hrpt.rlut.json
+++ b/data_descriptors/variables/ap1hrpt.rlut.json
@@ -2,7 +2,7 @@
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   "id": "ap1hrpt.rlut.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hrpt.ta.json b/data_descriptors/variables/ap1hrpt.ta.json
index 21744d8f2..5570eaaaf 100644
--- a/data_descriptors/variables/ap1hrpt.ta.json
+++ b/data_descriptors/variables/ap1hrpt.ta.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap1hrpt.ta27.json b/data_descriptors/variables/ap1hrpt.ta27.json
index 6518b7d48..e316753a2 100644
--- a/data_descriptors/variables/ap1hrpt.ta27.json
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@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hrpt.tntr27.json b/data_descriptors/variables/ap1hrpt.tntr27.json
index 87bb4d663..189b4481d 100644
--- a/data_descriptors/variables/ap1hrpt.tntr27.json
+++ b/data_descriptors/variables/ap1hrpt.tntr27.json
@@ -2,7 +2,7 @@
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   "id": "ap1hrpt.tntr27.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hrpt.ua.json b/data_descriptors/variables/ap1hrpt.ua.json
index 8c3cd8b34..ce9beef99 100644
--- a/data_descriptors/variables/ap1hrpt.ua.json
+++ b/data_descriptors/variables/ap1hrpt.ua.json
@@ -2,7 +2,7 @@
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   "id": "ap1hrpt.ua.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hrpt.ua27.json b/data_descriptors/variables/ap1hrpt.ua27.json
index 04452a5d2..b15c0fce9 100644
--- a/data_descriptors/variables/ap1hrpt.ua27.json
+++ b/data_descriptors/variables/ap1hrpt.ua27.json
@@ -2,7 +2,7 @@
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   "id": "ap1hrpt.ua27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hrpt.utendnogw27.json b/data_descriptors/variables/ap1hrpt.utendnogw27.json
index 97c8f3e72..134e5e7c1 100644
--- a/data_descriptors/variables/ap1hrpt.utendnogw27.json
+++ b/data_descriptors/variables/ap1hrpt.utendnogw27.json
@@ -2,7 +2,7 @@
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   "id": "ap1hrpt.utendnogw27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hrpt.va.json b/data_descriptors/variables/ap1hrpt.va.json
index d2d265e72..0d4dfc9c3 100644
--- a/data_descriptors/variables/ap1hrpt.va.json
+++ b/data_descriptors/variables/ap1hrpt.va.json
@@ -2,7 +2,7 @@
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   "id": "ap1hrpt.va.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hrpt.va27.json b/data_descriptors/variables/ap1hrpt.va27.json
index 59b1031a9..c20d64eda 100644
--- a/data_descriptors/variables/ap1hrpt.va27.json
+++ b/data_descriptors/variables/ap1hrpt.va27.json
@@ -2,7 +2,7 @@
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   "id": "ap1hrpt.va27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hrpt.vtendnogw27.json b/data_descriptors/variables/ap1hrpt.vtendnogw27.json
index 9c6b0ff34..7664691e7 100644
--- a/data_descriptors/variables/ap1hrpt.vtendnogw27.json
+++ b/data_descriptors/variables/ap1hrpt.vtendnogw27.json
@@ -2,7 +2,7 @@
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   "id": "ap1hrpt.vtendnogw27.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hrpt.wap.json b/data_descriptors/variables/ap1hrpt.wap.json
index 2d01b025d..e968a3976 100644
--- a/data_descriptors/variables/ap1hrpt.wap.json
+++ b/data_descriptors/variables/ap1hrpt.wap.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hrpt.wap27.json b/data_descriptors/variables/ap1hrpt.wap27.json
index 7a82db4ee..d210f9f85 100644
--- a/data_descriptors/variables/ap1hrpt.wap27.json
+++ b/data_descriptors/variables/ap1hrpt.wap27.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap1hrpt.zg27.json b/data_descriptors/variables/ap1hrpt.zg27.json
index 8f1ef7a0a..424a8e502 100644
--- a/data_descriptors/variables/ap1hrpt.zg27.json
+++ b/data_descriptors/variables/ap1hrpt.zg27.json
@@ -2,7 +2,7 @@
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   "id": "ap1hrpt.zg27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.clivi.json b/data_descriptors/variables/ap3hr.clivi.json
index c7736c1ae..37ad990e6 100644
--- a/data_descriptors/variables/ap3hr.clivi.json
+++ b/data_descriptors/variables/ap3hr.clivi.json
@@ -2,7 +2,7 @@
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   "id": "ap3hr.clivi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.clt.json b/data_descriptors/variables/ap3hr.clt.json
index a3ec5b64c..80c54d647 100644
--- a/data_descriptors/variables/ap3hr.clt.json
+++ b/data_descriptors/variables/ap3hr.clt.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.clwvi.json b/data_descriptors/variables/ap3hr.clwvi.json
index ea073e40f..015df5fe0 100644
--- a/data_descriptors/variables/ap3hr.clwvi.json
+++ b/data_descriptors/variables/ap3hr.clwvi.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.hfls.json b/data_descriptors/variables/ap3hr.hfls.json
index 4c45fbabe..5d023fb65 100644
--- a/data_descriptors/variables/ap3hr.hfls.json
+++ b/data_descriptors/variables/ap3hr.hfls.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.hfss.json b/data_descriptors/variables/ap3hr.hfss.json
index e231824cc..4bb0d060d 100644
--- a/data_descriptors/variables/ap3hr.hfss.json
+++ b/data_descriptors/variables/ap3hr.hfss.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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diff --git a/data_descriptors/variables/ap3hr.pr.json b/data_descriptors/variables/ap3hr.pr.json
index b00c9e127..d02dd0d10 100644
--- a/data_descriptors/variables/ap3hr.pr.json
+++ b/data_descriptors/variables/ap3hr.pr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.pr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.prc.json b/data_descriptors/variables/ap3hr.prc.json
index f4889ac37..02c316c19 100644
--- a/data_descriptors/variables/ap3hr.prc.json
+++ b/data_descriptors/variables/ap3hr.prc.json
@@ -2,7 +2,7 @@
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   "id": "ap3hr.prc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.prcsh.json b/data_descriptors/variables/ap3hr.prcsh.json
index 51dedd460..1e7d47570 100644
--- a/data_descriptors/variables/ap3hr.prcsh.json
+++ b/data_descriptors/variables/ap3hr.prcsh.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.prra.json b/data_descriptors/variables/ap3hr.prra.json
index 2c6300a66..a9246fb55 100644
--- a/data_descriptors/variables/ap3hr.prra.json
+++ b/data_descriptors/variables/ap3hr.prra.json
@@ -2,7 +2,7 @@
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   "id": "ap3hr.prra.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.prrc.json b/data_descriptors/variables/ap3hr.prrc.json
index f3e693a83..22eec0934 100644
--- a/data_descriptors/variables/ap3hr.prrc.json
+++ b/data_descriptors/variables/ap3hr.prrc.json
@@ -2,7 +2,7 @@
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   "id": "ap3hr.prrc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.prsn.json b/data_descriptors/variables/ap3hr.prsn.json
index d6f2abd67..fe8b0d58e 100644
--- a/data_descriptors/variables/ap3hr.prsn.json
+++ b/data_descriptors/variables/ap3hr.prsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.prsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.prsnc.json b/data_descriptors/variables/ap3hr.prsnc.json
index 79074ffb2..d1b01af93 100644
--- a/data_descriptors/variables/ap3hr.prsnc.json
+++ b/data_descriptors/variables/ap3hr.prsnc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.prsnc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.prw.json b/data_descriptors/variables/ap3hr.prw.json
index beaf281cc..18ff02c60 100644
--- a/data_descriptors/variables/ap3hr.prw.json
+++ b/data_descriptors/variables/ap3hr.prw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.prw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.psl.json b/data_descriptors/variables/ap3hr.psl.json
index ab169b38a..0c5bab6a5 100644
--- a/data_descriptors/variables/ap3hr.psl.json
+++ b/data_descriptors/variables/ap3hr.psl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.psl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.rlds.json b/data_descriptors/variables/ap3hr.rlds.json
index 1bfcd9225..238e2708a 100644
--- a/data_descriptors/variables/ap3hr.rlds.json
+++ b/data_descriptors/variables/ap3hr.rlds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.rlds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.rldscs.json b/data_descriptors/variables/ap3hr.rldscs.json
index efa48d594..dbfbcd29f 100644
--- a/data_descriptors/variables/ap3hr.rldscs.json
+++ b/data_descriptors/variables/ap3hr.rldscs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.rldscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.rlus.json b/data_descriptors/variables/ap3hr.rlus.json
index ae88478ee..78824882e 100644
--- a/data_descriptors/variables/ap3hr.rlus.json
+++ b/data_descriptors/variables/ap3hr.rlus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.rlus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.rlut.json b/data_descriptors/variables/ap3hr.rlut.json
index 196c00a2f..716f71d08 100644
--- a/data_descriptors/variables/ap3hr.rlut.json
+++ b/data_descriptors/variables/ap3hr.rlut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.rlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.rlutcs.json b/data_descriptors/variables/ap3hr.rlutcs.json
index 56ac124d5..27656ec7e 100644
--- a/data_descriptors/variables/ap3hr.rlutcs.json
+++ b/data_descriptors/variables/ap3hr.rlutcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.rlutcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.rsds.json b/data_descriptors/variables/ap3hr.rsds.json
index fade172a3..335d1a8a8 100644
--- a/data_descriptors/variables/ap3hr.rsds.json
+++ b/data_descriptors/variables/ap3hr.rsds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.rsds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.rsdscs.json b/data_descriptors/variables/ap3hr.rsdscs.json
index 3c81b45bc..c79fbfbdf 100644
--- a/data_descriptors/variables/ap3hr.rsdscs.json
+++ b/data_descriptors/variables/ap3hr.rsdscs.json
@@ -2,7 +2,7 @@
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   "id": "ap3hr.rsdscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.rsdsdiff.json b/data_descriptors/variables/ap3hr.rsdsdiff.json
index 4501a61e2..4aa35da23 100644
--- a/data_descriptors/variables/ap3hr.rsdsdiff.json
+++ b/data_descriptors/variables/ap3hr.rsdsdiff.json
@@ -2,7 +2,7 @@
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   "id": "ap3hr.rsdsdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.rsdt.json b/data_descriptors/variables/ap3hr.rsdt.json
index 3d19ecfd2..43eddc961 100644
--- a/data_descriptors/variables/ap3hr.rsdt.json
+++ b/data_descriptors/variables/ap3hr.rsdt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.rsdt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.rsus.json b/data_descriptors/variables/ap3hr.rsus.json
index 7c60ef5d7..e292cd730 100644
--- a/data_descriptors/variables/ap3hr.rsus.json
+++ b/data_descriptors/variables/ap3hr.rsus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.rsus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.rsuscs.json b/data_descriptors/variables/ap3hr.rsuscs.json
index 7cdaa8fca..d97901261 100644
--- a/data_descriptors/variables/ap3hr.rsuscs.json
+++ b/data_descriptors/variables/ap3hr.rsuscs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.rsuscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.rsut.json b/data_descriptors/variables/ap3hr.rsut.json
index 0ed1f6df8..6ee9f9574 100644
--- a/data_descriptors/variables/ap3hr.rsut.json
+++ b/data_descriptors/variables/ap3hr.rsut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.rsut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.rsutcs.json b/data_descriptors/variables/ap3hr.rsutcs.json
index dedcd73c0..0b577e7df 100644
--- a/data_descriptors/variables/ap3hr.rsutcs.json
+++ b/data_descriptors/variables/ap3hr.rsutcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.rsutcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.sfcwind.json b/data_descriptors/variables/ap3hr.sfcwind.json
index aec551280..eb6175131 100644
--- a/data_descriptors/variables/ap3hr.sfcwind.json
+++ b/data_descriptors/variables/ap3hr.sfcwind.json
@@ -2,7 +2,7 @@
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   "id": "ap3hr.sfcwind.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.uas.json b/data_descriptors/variables/ap3hr.uas.json
index 080cc3454..5d2af7f1d 100644
--- a/data_descriptors/variables/ap3hr.uas.json
+++ b/data_descriptors/variables/ap3hr.uas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.uas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hr.vas.json b/data_descriptors/variables/ap3hr.vas.json
index 579ddab72..e373c0654 100644
--- a/data_descriptors/variables/ap3hr.vas.json
+++ b/data_descriptors/variables/ap3hr.vas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hr.vas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.albdiffbnd.json b/data_descriptors/variables/ap3hrpt.albdiffbnd.json
index be175b086..38f9de8c4 100644
--- a/data_descriptors/variables/ap3hrpt.albdiffbnd.json
+++ b/data_descriptors/variables/ap3hrpt.albdiffbnd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.albdiffbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.albdirbnd.json b/data_descriptors/variables/ap3hrpt.albdirbnd.json
index de726ea98..64f82fbc3 100644
--- a/data_descriptors/variables/ap3hrpt.albdirbnd.json
+++ b/data_descriptors/variables/ap3hrpt.albdirbnd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.albdirbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.cfaddbze94.json b/data_descriptors/variables/ap3hrpt.cfaddbze94.json
index f1171b858..a26176b96 100644
--- a/data_descriptors/variables/ap3hrpt.cfaddbze94.json
+++ b/data_descriptors/variables/ap3hrpt.cfaddbze94.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.cfaddbze94.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.cfadlidarsr532.json b/data_descriptors/variables/ap3hrpt.cfadlidarsr532.json
index fb5368788..ad8292464 100644
--- a/data_descriptors/variables/ap3hrpt.cfadlidarsr532.json
+++ b/data_descriptors/variables/ap3hrpt.cfadlidarsr532.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.cfadlidarsr532.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.ci.json b/data_descriptors/variables/ap3hrpt.ci.json
index 8db7a97da..b92bb09a4 100644
--- a/data_descriptors/variables/ap3hrpt.ci.json
+++ b/data_descriptors/variables/ap3hrpt.ci.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.ci.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.clcalipso.json b/data_descriptors/variables/ap3hrpt.clcalipso.json
index 17ef899e2..74682cd7c 100644
--- a/data_descriptors/variables/ap3hrpt.clcalipso.json
+++ b/data_descriptors/variables/ap3hrpt.clcalipso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.clcalipso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.clcalipso2.json b/data_descriptors/variables/ap3hrpt.clcalipso2.json
index a7a810dd2..a70f75bbb 100644
--- a/data_descriptors/variables/ap3hrpt.clcalipso2.json
+++ b/data_descriptors/variables/ap3hrpt.clcalipso2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.clcalipso2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.clhcalipso.json b/data_descriptors/variables/ap3hrpt.clhcalipso.json
index 7f9811a5e..993a8c5d2 100644
--- a/data_descriptors/variables/ap3hrpt.clhcalipso.json
+++ b/data_descriptors/variables/ap3hrpt.clhcalipso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.clhcalipso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.clisccp.json b/data_descriptors/variables/ap3hrpt.clisccp.json
index 367746033..ce43c630d 100644
--- a/data_descriptors/variables/ap3hrpt.clisccp.json
+++ b/data_descriptors/variables/ap3hrpt.clisccp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.clisccp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.clivi.json b/data_descriptors/variables/ap3hrpt.clivi.json
index 4166ba918..8e364bf8c 100644
--- a/data_descriptors/variables/ap3hrpt.clivi.json
+++ b/data_descriptors/variables/ap3hrpt.clivi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.clivi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.cllcalipso.json b/data_descriptors/variables/ap3hrpt.cllcalipso.json
index c5b03c09f..df53e731b 100644
--- a/data_descriptors/variables/ap3hrpt.cllcalipso.json
+++ b/data_descriptors/variables/ap3hrpt.cllcalipso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.cllcalipso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.clmcalipso.json b/data_descriptors/variables/ap3hrpt.clmcalipso.json
index 3959d2401..e3fcdac6a 100644
--- a/data_descriptors/variables/ap3hrpt.clmcalipso.json
+++ b/data_descriptors/variables/ap3hrpt.clmcalipso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.clmcalipso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.clmisr.json b/data_descriptors/variables/ap3hrpt.clmisr.json
index 4932f703d..921285bd1 100644
--- a/data_descriptors/variables/ap3hrpt.clmisr.json
+++ b/data_descriptors/variables/ap3hrpt.clmisr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.clmisr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.clt.json b/data_descriptors/variables/ap3hrpt.clt.json
index a38df1cfa..eed48cd6b 100644
--- a/data_descriptors/variables/ap3hrpt.clt.json
+++ b/data_descriptors/variables/ap3hrpt.clt.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrpt.clt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.cltc.json b/data_descriptors/variables/ap3hrpt.cltc.json
index d8975fe66..5cfc2f539 100644
--- a/data_descriptors/variables/ap3hrpt.cltc.json
+++ b/data_descriptors/variables/ap3hrpt.cltc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.cltc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.cltcalipso.json b/data_descriptors/variables/ap3hrpt.cltcalipso.json
index 7de9367c0..fc38047b3 100644
--- a/data_descriptors/variables/ap3hrpt.cltcalipso.json
+++ b/data_descriptors/variables/ap3hrpt.cltcalipso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.cltcalipso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.clwvi.json b/data_descriptors/variables/ap3hrpt.clwvi.json
index e26aaa500..8aadb1bac 100644
--- a/data_descriptors/variables/ap3hrpt.clwvi.json
+++ b/data_descriptors/variables/ap3hrpt.clwvi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.clwvi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.evspsbl.json b/data_descriptors/variables/ap3hrpt.evspsbl.json
index 421c1605d..66e05c48d 100644
--- a/data_descriptors/variables/ap3hrpt.evspsbl.json
+++ b/data_descriptors/variables/ap3hrpt.evspsbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.evspsbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.hfls.json b/data_descriptors/variables/ap3hrpt.hfls.json
index 793e86661..1638afd6a 100644
--- a/data_descriptors/variables/ap3hrpt.hfls.json
+++ b/data_descriptors/variables/ap3hrpt.hfls.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.hfls.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.hfss.json b/data_descriptors/variables/ap3hrpt.hfss.json
index efbd6514d..f3611f5d5 100644
--- a/data_descriptors/variables/ap3hrpt.hfss.json
+++ b/data_descriptors/variables/ap3hrpt.hfss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.hfss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.hurs.json b/data_descriptors/variables/ap3hrpt.hurs.json
index cc5fa28ef..e0fc71bdf 100644
--- a/data_descriptors/variables/ap3hrpt.hurs.json
+++ b/data_descriptors/variables/ap3hrpt.hurs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.hurs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.hus7h.json b/data_descriptors/variables/ap3hrpt.hus7h.json
index e8b3a37b3..9283f66cc 100644
--- a/data_descriptors/variables/ap3hrpt.hus7h.json
+++ b/data_descriptors/variables/ap3hrpt.hus7h.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.hus7h.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.huss.json b/data_descriptors/variables/ap3hrpt.huss.json
index 6e23aff01..942d570db 100644
--- a/data_descriptors/variables/ap3hrpt.huss.json
+++ b/data_descriptors/variables/ap3hrpt.huss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.huss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.jpdftaureicemodis.json b/data_descriptors/variables/ap3hrpt.jpdftaureicemodis.json
index 840ef9e70..480414846 100644
--- a/data_descriptors/variables/ap3hrpt.jpdftaureicemodis.json
+++ b/data_descriptors/variables/ap3hrpt.jpdftaureicemodis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.jpdftaureicemodis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.jpdftaureliqmodis.json b/data_descriptors/variables/ap3hrpt.jpdftaureliqmodis.json
index aa77f1bf8..6a58700e5 100644
--- a/data_descriptors/variables/ap3hrpt.jpdftaureliqmodis.json
+++ b/data_descriptors/variables/ap3hrpt.jpdftaureliqmodis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.jpdftaureliqmodis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.parasolrefl.json b/data_descriptors/variables/ap3hrpt.parasolrefl.json
index 79a82384b..20723d887 100644
--- a/data_descriptors/variables/ap3hrpt.parasolrefl.json
+++ b/data_descriptors/variables/ap3hrpt.parasolrefl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.parasolrefl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.pr.json b/data_descriptors/variables/ap3hrpt.pr.json
index ebdc40205..ca4edcf24 100644
--- a/data_descriptors/variables/ap3hrpt.pr.json
+++ b/data_descriptors/variables/ap3hrpt.pr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.pr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.prc.json b/data_descriptors/variables/ap3hrpt.prc.json
index ecc4f8a1e..00fda5740 100644
--- a/data_descriptors/variables/ap3hrpt.prc.json
+++ b/data_descriptors/variables/ap3hrpt.prc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.prc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.prsn.json b/data_descriptors/variables/ap3hrpt.prsn.json
index 1d77a1f93..d08bda31a 100644
--- a/data_descriptors/variables/ap3hrpt.prsn.json
+++ b/data_descriptors/variables/ap3hrpt.prsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.prsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.prw.json b/data_descriptors/variables/ap3hrpt.prw.json
index 22d68731a..dd86ed5ec 100644
--- a/data_descriptors/variables/ap3hrpt.prw.json
+++ b/data_descriptors/variables/ap3hrpt.prw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.prw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.ps.json b/data_descriptors/variables/ap3hrpt.ps.json
index 0792e0409..2f364b69e 100644
--- a/data_descriptors/variables/ap3hrpt.ps.json
+++ b/data_descriptors/variables/ap3hrpt.ps.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.ps.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.psl.json b/data_descriptors/variables/ap3hrpt.psl.json
index e3ee9aeb4..938edd474 100644
--- a/data_descriptors/variables/ap3hrpt.psl.json
+++ b/data_descriptors/variables/ap3hrpt.psl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.psl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rlds.json b/data_descriptors/variables/ap3hrpt.rlds.json
index 5f417f39a..72bacd8ff 100644
--- a/data_descriptors/variables/ap3hrpt.rlds.json
+++ b/data_descriptors/variables/ap3hrpt.rlds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.rlds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rldscs.json b/data_descriptors/variables/ap3hrpt.rldscs.json
index 55d0b21dd..da97601a3 100644
--- a/data_descriptors/variables/ap3hrpt.rldscs.json
+++ b/data_descriptors/variables/ap3hrpt.rldscs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.rldscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rlus.json b/data_descriptors/variables/ap3hrpt.rlus.json
index 6cdf904ab..d64733e90 100644
--- a/data_descriptors/variables/ap3hrpt.rlus.json
+++ b/data_descriptors/variables/ap3hrpt.rlus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.rlus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rlut.json b/data_descriptors/variables/ap3hrpt.rlut.json
index b4286c8d2..d8abdd167 100644
--- a/data_descriptors/variables/ap3hrpt.rlut.json
+++ b/data_descriptors/variables/ap3hrpt.rlut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.rlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rlutcs.json b/data_descriptors/variables/ap3hrpt.rlutcs.json
index 6903263a7..9554ecd08 100644
--- a/data_descriptors/variables/ap3hrpt.rlutcs.json
+++ b/data_descriptors/variables/ap3hrpt.rlutcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.rlutcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rsds.json b/data_descriptors/variables/ap3hrpt.rsds.json
index d32f2d03a..9def6aaff 100644
--- a/data_descriptors/variables/ap3hrpt.rsds.json
+++ b/data_descriptors/variables/ap3hrpt.rsds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.rsds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rsdscs.json b/data_descriptors/variables/ap3hrpt.rsdscs.json
index 80d537e14..ece3ebf2e 100644
--- a/data_descriptors/variables/ap3hrpt.rsdscs.json
+++ b/data_descriptors/variables/ap3hrpt.rsdscs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.rsdscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rsdscsbnd.json b/data_descriptors/variables/ap3hrpt.rsdscsbnd.json
index 33b291b16..37462a996 100644
--- a/data_descriptors/variables/ap3hrpt.rsdscsbnd.json
+++ b/data_descriptors/variables/ap3hrpt.rsdscsbnd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.rsdscsbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rsdt.json b/data_descriptors/variables/ap3hrpt.rsdt.json
index 6ac2ce47a..7f3ea411b 100644
--- a/data_descriptors/variables/ap3hrpt.rsdt.json
+++ b/data_descriptors/variables/ap3hrpt.rsdt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.rsdt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rsus.json b/data_descriptors/variables/ap3hrpt.rsus.json
index 4fca155e4..3eb59d19d 100644
--- a/data_descriptors/variables/ap3hrpt.rsus.json
+++ b/data_descriptors/variables/ap3hrpt.rsus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.rsus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rsuscs.json b/data_descriptors/variables/ap3hrpt.rsuscs.json
index a8c3cfe77..e830bf444 100644
--- a/data_descriptors/variables/ap3hrpt.rsuscs.json
+++ b/data_descriptors/variables/ap3hrpt.rsuscs.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrpt.rsuscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rsuscsbnd.json b/data_descriptors/variables/ap3hrpt.rsuscsbnd.json
index 735aa3c36..2060e41d6 100644
--- a/data_descriptors/variables/ap3hrpt.rsuscsbnd.json
+++ b/data_descriptors/variables/ap3hrpt.rsuscsbnd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.rsuscsbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rsut.json b/data_descriptors/variables/ap3hrpt.rsut.json
index e6c48b3f8..f77fe83a1 100644
--- a/data_descriptors/variables/ap3hrpt.rsut.json
+++ b/data_descriptors/variables/ap3hrpt.rsut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.rsut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rsutcs.json b/data_descriptors/variables/ap3hrpt.rsutcs.json
index fb822f944..836fca312 100644
--- a/data_descriptors/variables/ap3hrpt.rsutcs.json
+++ b/data_descriptors/variables/ap3hrpt.rsutcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.rsutcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rsutcsafbnd.json b/data_descriptors/variables/ap3hrpt.rsutcsafbnd.json
index e15c57bda..ef90cc736 100644
--- a/data_descriptors/variables/ap3hrpt.rsutcsafbnd.json
+++ b/data_descriptors/variables/ap3hrpt.rsutcsafbnd.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrpt.rsutcsafbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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diff --git a/data_descriptors/variables/ap3hrpt.rsutcsbnd.json b/data_descriptors/variables/ap3hrpt.rsutcsbnd.json
index f1f05ff0f..46daf2dd8 100644
--- a/data_descriptors/variables/ap3hrpt.rsutcsbnd.json
+++ b/data_descriptors/variables/ap3hrpt.rsutcsbnd.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrpt.rsutcsbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.rtmt.json b/data_descriptors/variables/ap3hrpt.rtmt.json
index 5b09cce38..be11cde98 100644
--- a/data_descriptors/variables/ap3hrpt.rtmt.json
+++ b/data_descriptors/variables/ap3hrpt.rtmt.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrpt.rtmt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.sci.json b/data_descriptors/variables/ap3hrpt.sci.json
index 49d290ae8..8fdbb0f9e 100644
--- a/data_descriptors/variables/ap3hrpt.sci.json
+++ b/data_descriptors/variables/ap3hrpt.sci.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrpt.sci.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "id": "ap3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.sfcwind.json b/data_descriptors/variables/ap3hrpt.sfcwind.json
index aed7c8732..37e7253cb 100644
--- a/data_descriptors/variables/ap3hrpt.sfcwind.json
+++ b/data_descriptors/variables/ap3hrpt.sfcwind.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrpt.sfcwind.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.solbnd.json b/data_descriptors/variables/ap3hrpt.solbnd.json
index 119386455..fedea64e8 100644
--- a/data_descriptors/variables/ap3hrpt.solbnd.json
+++ b/data_descriptors/variables/ap3hrpt.solbnd.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.sza.json b/data_descriptors/variables/ap3hrpt.sza.json
index e35061622..666ae0390 100644
--- a/data_descriptors/variables/ap3hrpt.sza.json
+++ b/data_descriptors/variables/ap3hrpt.sza.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrpt.sza.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.ta7h.json b/data_descriptors/variables/ap3hrpt.ta7h.json
index 0ea0618db..e02c86bd5 100644
--- a/data_descriptors/variables/ap3hrpt.ta7h.json
+++ b/data_descriptors/variables/ap3hrpt.ta7h.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrpt.ta7h.json",
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.tas.json b/data_descriptors/variables/ap3hrpt.tas.json
index b589b5363..34794af72 100644
--- a/data_descriptors/variables/ap3hrpt.tas.json
+++ b/data_descriptors/variables/ap3hrpt.tas.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrpt.tas.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.tauu.json b/data_descriptors/variables/ap3hrpt.tauu.json
index f04b94194..6aee91dff 100644
--- a/data_descriptors/variables/ap3hrpt.tauu.json
+++ b/data_descriptors/variables/ap3hrpt.tauu.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrpt.tauu.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.tauv.json b/data_descriptors/variables/ap3hrpt.tauv.json
index ead7f0f3e..dc89ce5a9 100644
--- a/data_descriptors/variables/ap3hrpt.tauv.json
+++ b/data_descriptors/variables/ap3hrpt.tauv.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrpt.tauv.json",
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrpt.ts.json b/data_descriptors/variables/ap3hrpt.ts.json
index e6f107807..b01779328 100644
--- a/data_descriptors/variables/ap3hrpt.ts.json
+++ b/data_descriptors/variables/ap3hrpt.ts.json
@@ -2,7 +2,7 @@
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diff --git a/data_descriptors/variables/ap3hrpt.ua7h.json b/data_descriptors/variables/ap3hrpt.ua7h.json
index 281afee04..869da8eca 100644
--- a/data_descriptors/variables/ap3hrpt.ua7h.json
+++ b/data_descriptors/variables/ap3hrpt.ua7h.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrpt.uas.json b/data_descriptors/variables/ap3hrpt.uas.json
index fa7ed1b4a..edfe0a76c 100644
--- a/data_descriptors/variables/ap3hrpt.uas.json
+++ b/data_descriptors/variables/ap3hrpt.uas.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrpt.uas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.va7h.json b/data_descriptors/variables/ap3hrpt.va7h.json
index a4921d38a..ad237bac3 100644
--- a/data_descriptors/variables/ap3hrpt.va7h.json
+++ b/data_descriptors/variables/ap3hrpt.va7h.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrpt.va7h.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.vas.json b/data_descriptors/variables/ap3hrpt.vas.json
index 607aade74..21d4f5a1b 100644
--- a/data_descriptors/variables/ap3hrpt.vas.json
+++ b/data_descriptors/variables/ap3hrpt.vas.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrpt.vas.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrpt.wap7h.json b/data_descriptors/variables/ap3hrpt.wap7h.json
index b566a9137..9c5ea1454 100644
--- a/data_descriptors/variables/ap3hrpt.wap7h.json
+++ b/data_descriptors/variables/ap3hrpt.wap7h.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrpt.wap7h.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.aerasymbnd.json b/data_descriptors/variables/ap3hrptlev.aerasymbnd.json
index cf0e915f2..65dd73df0 100644
--- a/data_descriptors/variables/ap3hrptlev.aerasymbnd.json
+++ b/data_descriptors/variables/ap3hrptlev.aerasymbnd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrptlev.aerasymbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrptlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.aeroptbnd.json b/data_descriptors/variables/ap3hrptlev.aeroptbnd.json
index a2a9ae734..70c7cb5dc 100644
--- a/data_descriptors/variables/ap3hrptlev.aeroptbnd.json
+++ b/data_descriptors/variables/ap3hrptlev.aeroptbnd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrptlev.aeroptbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap3hrptlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.aerssabnd.json b/data_descriptors/variables/ap3hrptlev.aerssabnd.json
index 4efe2b5b2..2c417d751 100644
--- a/data_descriptors/variables/ap3hrptlev.aerssabnd.json
+++ b/data_descriptors/variables/ap3hrptlev.aerssabnd.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.aerssabnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.ch4.json b/data_descriptors/variables/ap3hrptlev.ch4.json
index 8e6d80696..4d1c7b746 100644
--- a/data_descriptors/variables/ap3hrptlev.ch4.json
+++ b/data_descriptors/variables/ap3hrptlev.ch4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrptlev.ch4.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.clc.json b/data_descriptors/variables/ap3hrptlev.clc.json
index d943ea8d3..89471b149 100644
--- a/data_descriptors/variables/ap3hrptlev.clc.json
+++ b/data_descriptors/variables/ap3hrptlev.clc.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.clc.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.clic.json b/data_descriptors/variables/ap3hrptlev.clic.json
index 18e95fa20..77420f6fd 100644
--- a/data_descriptors/variables/ap3hrptlev.clic.json
+++ b/data_descriptors/variables/ap3hrptlev.clic.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.clic.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.clis.json b/data_descriptors/variables/ap3hrptlev.clis.json
index 58f99d7e7..fbf0f61d2 100644
--- a/data_descriptors/variables/ap3hrptlev.clis.json
+++ b/data_descriptors/variables/ap3hrptlev.clis.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.clis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.cls.json b/data_descriptors/variables/ap3hrptlev.cls.json
index 924f2dbb4..4ad9309cb 100644
--- a/data_descriptors/variables/ap3hrptlev.cls.json
+++ b/data_descriptors/variables/ap3hrptlev.cls.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.cls.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.clwc.json b/data_descriptors/variables/ap3hrptlev.clwc.json
index 44d25992a..a59fbbc1c 100644
--- a/data_descriptors/variables/ap3hrptlev.clwc.json
+++ b/data_descriptors/variables/ap3hrptlev.clwc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrptlev.clwc.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.clws.json b/data_descriptors/variables/ap3hrptlev.clws.json
index 6754ff4c6..bf7bf74ac 100644
--- a/data_descriptors/variables/ap3hrptlev.clws.json
+++ b/data_descriptors/variables/ap3hrptlev.clws.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.clws.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.co2.json b/data_descriptors/variables/ap3hrptlev.co2.json
index 0160a1825..ba48813f2 100644
--- a/data_descriptors/variables/ap3hrptlev.co2.json
+++ b/data_descriptors/variables/ap3hrptlev.co2.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.demc.json b/data_descriptors/variables/ap3hrptlev.demc.json
index df5dde6d6..45d15892c 100644
--- a/data_descriptors/variables/ap3hrptlev.demc.json
+++ b/data_descriptors/variables/ap3hrptlev.demc.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.demc.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.dems.json b/data_descriptors/variables/ap3hrptlev.dems.json
index a78ffd417..1bf484cff 100644
--- a/data_descriptors/variables/ap3hrptlev.dems.json
+++ b/data_descriptors/variables/ap3hrptlev.dems.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.dems.json",
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.dtauc.json b/data_descriptors/variables/ap3hrptlev.dtauc.json
index 5d82cc62d..6fad7aafa 100644
--- a/data_descriptors/variables/ap3hrptlev.dtauc.json
+++ b/data_descriptors/variables/ap3hrptlev.dtauc.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.dtauc.json",
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.dtaus.json b/data_descriptors/variables/ap3hrptlev.dtaus.json
index f73fe8936..811247919 100644
--- a/data_descriptors/variables/ap3hrptlev.dtaus.json
+++ b/data_descriptors/variables/ap3hrptlev.dtaus.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.dtaus.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.grpllsprof.json b/data_descriptors/variables/ap3hrptlev.grpllsprof.json
index fc5d49703..7889a2502 100644
--- a/data_descriptors/variables/ap3hrptlev.grpllsprof.json
+++ b/data_descriptors/variables/ap3hrptlev.grpllsprof.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.grpllsprof.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.h2o.json b/data_descriptors/variables/ap3hrptlev.h2o.json
index 8dcf3e10d..aa8ecff09 100644
--- a/data_descriptors/variables/ap3hrptlev.h2o.json
+++ b/data_descriptors/variables/ap3hrptlev.h2o.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.h2o.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.hus.json b/data_descriptors/variables/ap3hrptlev.hus.json
index 49d3b369f..9de03fc79 100644
--- a/data_descriptors/variables/ap3hrptlev.hus.json
+++ b/data_descriptors/variables/ap3hrptlev.hus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
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diff --git a/data_descriptors/variables/ap3hrptlev.n2o.json b/data_descriptors/variables/ap3hrptlev.n2o.json
index 3fc73ec73..2c8d7397a 100644
--- a/data_descriptors/variables/ap3hrptlev.n2o.json
+++ b/data_descriptors/variables/ap3hrptlev.n2o.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.n2o.json",
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.o3.json b/data_descriptors/variables/ap3hrptlev.o3.json
index 8c790bf73..cb5c811b9 100644
--- a/data_descriptors/variables/ap3hrptlev.o3.json
+++ b/data_descriptors/variables/ap3hrptlev.o3.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.o3.json",
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.pfull.json b/data_descriptors/variables/ap3hrptlev.pfull.json
index e423c5349..bfdd9e562 100644
--- a/data_descriptors/variables/ap3hrptlev.pfull.json
+++ b/data_descriptors/variables/ap3hrptlev.pfull.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.pfull.json",
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.phalf.json b/data_descriptors/variables/ap3hrptlev.phalf.json
index 71d4101ec..09d01e77d 100644
--- a/data_descriptors/variables/ap3hrptlev.phalf.json
+++ b/data_descriptors/variables/ap3hrptlev.phalf.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.phalf.json",
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.prcprof.json b/data_descriptors/variables/ap3hrptlev.prcprof.json
index ffe66e385..f50470538 100644
--- a/data_descriptors/variables/ap3hrptlev.prcprof.json
+++ b/data_descriptors/variables/ap3hrptlev.prcprof.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.prlsns.json b/data_descriptors/variables/ap3hrptlev.prlsns.json
index 54a22bbc1..6e4ecbc06 100644
--- a/data_descriptors/variables/ap3hrptlev.prlsns.json
+++ b/data_descriptors/variables/ap3hrptlev.prlsns.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.prlsns.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.prlsprof.json b/data_descriptors/variables/ap3hrptlev.prlsprof.json
index fb0b63162..05624a60c 100644
--- a/data_descriptors/variables/ap3hrptlev.prlsprof.json
+++ b/data_descriptors/variables/ap3hrptlev.prlsprof.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.prlsprof.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.prsnc.json b/data_descriptors/variables/ap3hrptlev.prsnc.json
index 0111c1fba..e04d5406c 100644
--- a/data_descriptors/variables/ap3hrptlev.prsnc.json
+++ b/data_descriptors/variables/ap3hrptlev.prsnc.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.reffclic.json b/data_descriptors/variables/ap3hrptlev.reffclic.json
index 0ff3a93a1..7f0b78593 100644
--- a/data_descriptors/variables/ap3hrptlev.reffclic.json
+++ b/data_descriptors/variables/ap3hrptlev.reffclic.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.reffclis.json b/data_descriptors/variables/ap3hrptlev.reffclis.json
index d308e313d..aa2a905bb 100644
--- a/data_descriptors/variables/ap3hrptlev.reffclis.json
+++ b/data_descriptors/variables/ap3hrptlev.reffclis.json
@@ -2,7 +2,7 @@
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.reffclwc.json b/data_descriptors/variables/ap3hrptlev.reffclwc.json
index 686a769f5..259957025 100644
--- a/data_descriptors/variables/ap3hrptlev.reffclwc.json
+++ b/data_descriptors/variables/ap3hrptlev.reffclwc.json
@@ -2,7 +2,7 @@
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diff --git a/data_descriptors/variables/ap3hrptlev.reffclws.json b/data_descriptors/variables/ap3hrptlev.reffclws.json
index 4a433d1f9..489a83827 100644
--- a/data_descriptors/variables/ap3hrptlev.reffclws.json
+++ b/data_descriptors/variables/ap3hrptlev.reffclws.json
@@ -2,7 +2,7 @@
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       "mip-era": "cmip6"
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index 57c68fe5d..80db01239 100644
--- a/data_descriptors/variables/ap3hrptlev.reffgrpls.json
+++ b/data_descriptors/variables/ap3hrptlev.reffgrpls.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.reffrainc.json b/data_descriptors/variables/ap3hrptlev.reffrainc.json
index afb72f3a7..24e7387ea 100644
--- a/data_descriptors/variables/ap3hrptlev.reffrainc.json
+++ b/data_descriptors/variables/ap3hrptlev.reffrainc.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.reffrains.json b/data_descriptors/variables/ap3hrptlev.reffrains.json
index 4dc25f3d1..4b1464fbb 100644
--- a/data_descriptors/variables/ap3hrptlev.reffrains.json
+++ b/data_descriptors/variables/ap3hrptlev.reffrains.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.reffsnowc.json b/data_descriptors/variables/ap3hrptlev.reffsnowc.json
index 23d0902f8..f5078c793 100644
--- a/data_descriptors/variables/ap3hrptlev.reffsnowc.json
+++ b/data_descriptors/variables/ap3hrptlev.reffsnowc.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.reffsnowc.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.reffsnows.json b/data_descriptors/variables/ap3hrptlev.reffsnows.json
index 17e64894f..2d08552ad 100644
--- a/data_descriptors/variables/ap3hrptlev.reffsnows.json
+++ b/data_descriptors/variables/ap3hrptlev.reffsnows.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap3hrptlev.reffsnows.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.rsdcs.json b/data_descriptors/variables/ap3hrptlev.rsdcs.json
index 72e32b915..5ebcbd42e 100644
--- a/data_descriptors/variables/ap3hrptlev.rsdcs.json
+++ b/data_descriptors/variables/ap3hrptlev.rsdcs.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.rsdcs.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.rsdcsbnd.json b/data_descriptors/variables/ap3hrptlev.rsdcsbnd.json
index 48f141f55..419ae5d84 100644
--- a/data_descriptors/variables/ap3hrptlev.rsdcsbnd.json
+++ b/data_descriptors/variables/ap3hrptlev.rsdcsbnd.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.rsdcsbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.rsucs.json b/data_descriptors/variables/ap3hrptlev.rsucs.json
index 318ef88b9..75f818f69 100644
--- a/data_descriptors/variables/ap3hrptlev.rsucs.json
+++ b/data_descriptors/variables/ap3hrptlev.rsucs.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.rsucsbnd.json b/data_descriptors/variables/ap3hrptlev.rsucsbnd.json
index 75a614746..82d41dd94 100644
--- a/data_descriptors/variables/ap3hrptlev.rsucsbnd.json
+++ b/data_descriptors/variables/ap3hrptlev.rsucsbnd.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/ap3hrptlev.ta.json b/data_descriptors/variables/ap3hrptlev.ta.json
index 9265ec774..1e835e243 100644
--- a/data_descriptors/variables/ap3hrptlev.ta.json
+++ b/data_descriptors/variables/ap3hrptlev.ta.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.ta.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.zfull.json b/data_descriptors/variables/ap3hrptlev.zfull.json
index b927b2552..4d9e36f5e 100644
--- a/data_descriptors/variables/ap3hrptlev.zfull.json
+++ b/data_descriptors/variables/ap3hrptlev.zfull.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.zfull.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap3hrptlev.zhalf.json b/data_descriptors/variables/ap3hrptlev.zhalf.json
index a2f8b5b62..24b0a8365 100644
--- a/data_descriptors/variables/ap3hrptlev.zhalf.json
+++ b/data_descriptors/variables/ap3hrptlev.zhalf.json
@@ -2,7 +2,7 @@
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   "id": "ap3hrptlev.zhalf.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.hurs.json b/data_descriptors/variables/ap6hr.hurs.json
index fedff072a..60130e436 100644
--- a/data_descriptors/variables/ap6hr.hurs.json
+++ b/data_descriptors/variables/ap6hr.hurs.json
@@ -2,7 +2,7 @@
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   "id": "ap6hr.hurs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.hus4.json b/data_descriptors/variables/ap6hr.hus4.json
index c81000349..de170ea2e 100644
--- a/data_descriptors/variables/ap6hr.hus4.json
+++ b/data_descriptors/variables/ap6hr.hus4.json
@@ -2,7 +2,7 @@
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   "id": "ap6hr.hus4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.pr.json b/data_descriptors/variables/ap6hr.pr.json
index 58c1d1c0c..39226582b 100644
--- a/data_descriptors/variables/ap6hr.pr.json
+++ b/data_descriptors/variables/ap6hr.pr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hr.pr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.prhmax.json b/data_descriptors/variables/ap6hr.prhmax.json
index 9b18f3b34..126ac1f6d 100644
--- a/data_descriptors/variables/ap6hr.prhmax.json
+++ b/data_descriptors/variables/ap6hr.prhmax.json
@@ -2,7 +2,7 @@
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   "id": "ap6hr.prhmax.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.psl.json b/data_descriptors/variables/ap6hr.psl.json
index 09e4186e7..db66f169b 100644
--- a/data_descriptors/variables/ap6hr.psl.json
+++ b/data_descriptors/variables/ap6hr.psl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hr.psl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.rv850.json b/data_descriptors/variables/ap6hr.rv850.json
index 8204c0260..ba9bcdb21 100644
--- a/data_descriptors/variables/ap6hr.rv850.json
+++ b/data_descriptors/variables/ap6hr.rv850.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hr.rv850.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.sfcwind.json b/data_descriptors/variables/ap6hr.sfcwind.json
index deeb1d06e..7ae4bd562 100644
--- a/data_descriptors/variables/ap6hr.sfcwind.json
+++ b/data_descriptors/variables/ap6hr.sfcwind.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hr.sfcwind.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.tas.json b/data_descriptors/variables/ap6hr.tas.json
index dae3d9aea..1ae19615d 100644
--- a/data_descriptors/variables/ap6hr.tas.json
+++ b/data_descriptors/variables/ap6hr.tas.json
@@ -2,7 +2,7 @@
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   "id": "ap6hr.tas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.ua100m.json b/data_descriptors/variables/ap6hr.ua100m.json
index d2c12234c..56a19e47b 100644
--- a/data_descriptors/variables/ap6hr.ua100m.json
+++ b/data_descriptors/variables/ap6hr.ua100m.json
@@ -2,7 +2,7 @@
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   "id": "ap6hr.ua100m.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.uas.json b/data_descriptors/variables/ap6hr.uas.json
index 302d586c4..39a0ddff9 100644
--- a/data_descriptors/variables/ap6hr.uas.json
+++ b/data_descriptors/variables/ap6hr.uas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hr.uas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.va100m.json b/data_descriptors/variables/ap6hr.va100m.json
index 02a1d8fdd..6c3885e2e 100644
--- a/data_descriptors/variables/ap6hr.va100m.json
+++ b/data_descriptors/variables/ap6hr.va100m.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hr.va100m.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.vas.json b/data_descriptors/variables/ap6hr.vas.json
index 111ca6a4f..7b17c19c5 100644
--- a/data_descriptors/variables/ap6hr.vas.json
+++ b/data_descriptors/variables/ap6hr.vas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hr.vas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.wap4.json b/data_descriptors/variables/ap6hr.wap4.json
index babe6f7ca..0faf1b6b2 100644
--- a/data_descriptors/variables/ap6hr.wap4.json
+++ b/data_descriptors/variables/ap6hr.wap4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hr.wap4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.wsgmax100m.json b/data_descriptors/variables/ap6hr.wsgmax100m.json
index bd8a55a47..9ada56cda 100644
--- a/data_descriptors/variables/ap6hr.wsgmax100m.json
+++ b/data_descriptors/variables/ap6hr.wsgmax100m.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hr.wsgmax100m.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.wsgmax10m.json b/data_descriptors/variables/ap6hr.wsgmax10m.json
index 2afa6889e..ddb19af05 100644
--- a/data_descriptors/variables/ap6hr.wsgmax10m.json
+++ b/data_descriptors/variables/ap6hr.wsgmax10m.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hr.wsgmax10m.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hr.zg1000.json b/data_descriptors/variables/ap6hr.zg1000.json
index de6f155ec..a0eb9d8cb 100644
--- a/data_descriptors/variables/ap6hr.zg1000.json
+++ b/data_descriptors/variables/ap6hr.zg1000.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hr.zg1000.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.cldicemxrat27.json b/data_descriptors/variables/ap6hrpt.cldicemxrat27.json
index 2555bba9f..394268fb0 100644
--- a/data_descriptors/variables/ap6hrpt.cldicemxrat27.json
+++ b/data_descriptors/variables/ap6hrpt.cldicemxrat27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.cldicemxrat27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.cldwatmxrat27.json b/data_descriptors/variables/ap6hrpt.cldwatmxrat27.json
index e5c19887f..21daad629 100644
--- a/data_descriptors/variables/ap6hrpt.cldwatmxrat27.json
+++ b/data_descriptors/variables/ap6hrpt.cldwatmxrat27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.cldwatmxrat27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.dtauc.json b/data_descriptors/variables/ap6hrpt.dtauc.json
index 1cf6c6399..cd01d113d 100644
--- a/data_descriptors/variables/ap6hrpt.dtauc.json
+++ b/data_descriptors/variables/ap6hrpt.dtauc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.dtauc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.dtaus.json b/data_descriptors/variables/ap6hrpt.dtaus.json
index 6c9736cbf..80d29bed7 100644
--- a/data_descriptors/variables/ap6hrpt.dtaus.json
+++ b/data_descriptors/variables/ap6hrpt.dtaus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.dtaus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.grplmxrat27.json b/data_descriptors/variables/ap6hrpt.grplmxrat27.json
index 081187cdb..86bc47c2e 100644
--- a/data_descriptors/variables/ap6hrpt.grplmxrat27.json
+++ b/data_descriptors/variables/ap6hrpt.grplmxrat27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.grplmxrat27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.hus27.json b/data_descriptors/variables/ap6hrpt.hus27.json
index 48e7fd816..980abc1d1 100644
--- a/data_descriptors/variables/ap6hrpt.hus27.json
+++ b/data_descriptors/variables/ap6hrpt.hus27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.hus27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.hus7h.json b/data_descriptors/variables/ap6hrpt.hus7h.json
index 42497c3a7..1f28ce9af 100644
--- a/data_descriptors/variables/ap6hrpt.hus7h.json
+++ b/data_descriptors/variables/ap6hrpt.hus7h.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.hus7h.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.huss.json b/data_descriptors/variables/ap6hrpt.huss.json
index 945cbdf7a..a3febbd7d 100644
--- a/data_descriptors/variables/ap6hrpt.huss.json
+++ b/data_descriptors/variables/ap6hrpt.huss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.huss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.lwsffluxaero.json b/data_descriptors/variables/ap6hrpt.lwsffluxaero.json
index 111a6a3a5..43fcb2e54 100644
--- a/data_descriptors/variables/ap6hrpt.lwsffluxaero.json
+++ b/data_descriptors/variables/ap6hrpt.lwsffluxaero.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.lwsffluxaero.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.lwtoafluxaerocs.json b/data_descriptors/variables/ap6hrpt.lwtoafluxaerocs.json
index f1f372b9b..b5aaf3d75 100644
--- a/data_descriptors/variables/ap6hrpt.lwtoafluxaerocs.json
+++ b/data_descriptors/variables/ap6hrpt.lwtoafluxaerocs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.lwtoafluxaerocs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.ps.json b/data_descriptors/variables/ap6hrpt.ps.json
index b432f2a04..3d9018c07 100644
--- a/data_descriptors/variables/ap6hrpt.ps.json
+++ b/data_descriptors/variables/ap6hrpt.ps.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.ps.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.psl.json b/data_descriptors/variables/ap6hrpt.psl.json
index 7ad33e3f4..f56353205 100644
--- a/data_descriptors/variables/ap6hrpt.psl.json
+++ b/data_descriptors/variables/ap6hrpt.psl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.psl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.rainmxrat27.json b/data_descriptors/variables/ap6hrpt.rainmxrat27.json
index 7069e318b..3bdd25244 100644
--- a/data_descriptors/variables/ap6hrpt.rainmxrat27.json
+++ b/data_descriptors/variables/ap6hrpt.rainmxrat27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.rainmxrat27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.rv850.json b/data_descriptors/variables/ap6hrpt.rv850.json
index 5bf57fe31..c83f82b5c 100644
--- a/data_descriptors/variables/ap6hrpt.rv850.json
+++ b/data_descriptors/variables/ap6hrpt.rv850.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.rv850.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.sfcwind.json b/data_descriptors/variables/ap6hrpt.sfcwind.json
index 0c19d73de..56aaf539b 100644
--- a/data_descriptors/variables/ap6hrpt.sfcwind.json
+++ b/data_descriptors/variables/ap6hrpt.sfcwind.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.sfcwind.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.snowmxrat27.json b/data_descriptors/variables/ap6hrpt.snowmxrat27.json
index 9caa0e4e6..578819049 100644
--- a/data_descriptors/variables/ap6hrpt.snowmxrat27.json
+++ b/data_descriptors/variables/ap6hrpt.snowmxrat27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.snowmxrat27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.swsffluxaero.json b/data_descriptors/variables/ap6hrpt.swsffluxaero.json
index 8f7b52307..f50cbb192 100644
--- a/data_descriptors/variables/ap6hrpt.swsffluxaero.json
+++ b/data_descriptors/variables/ap6hrpt.swsffluxaero.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.swsffluxaero.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.swtoafluxaerocs.json b/data_descriptors/variables/ap6hrpt.swtoafluxaerocs.json
index 8bd1facc0..2b9c64417 100644
--- a/data_descriptors/variables/ap6hrpt.swtoafluxaerocs.json
+++ b/data_descriptors/variables/ap6hrpt.swtoafluxaerocs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.swtoafluxaerocs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.ta.json b/data_descriptors/variables/ap6hrpt.ta.json
index 205f98cd2..8403538f6 100644
--- a/data_descriptors/variables/ap6hrpt.ta.json
+++ b/data_descriptors/variables/ap6hrpt.ta.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.ta.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.ta27.json b/data_descriptors/variables/ap6hrpt.ta27.json
index 6d02c31ed..b72c4ad6d 100644
--- a/data_descriptors/variables/ap6hrpt.ta27.json
+++ b/data_descriptors/variables/ap6hrpt.ta27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.ta27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.ta7h.json b/data_descriptors/variables/ap6hrpt.ta7h.json
index cdb3a666a..3b13cecde 100644
--- a/data_descriptors/variables/ap6hrpt.ta7h.json
+++ b/data_descriptors/variables/ap6hrpt.ta7h.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.ta7h.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.tas.json b/data_descriptors/variables/ap6hrpt.tas.json
index 7f1631da3..a126ee772 100644
--- a/data_descriptors/variables/ap6hrpt.tas.json
+++ b/data_descriptors/variables/ap6hrpt.tas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.tas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.ts.json b/data_descriptors/variables/ap6hrpt.ts.json
index 91acc580b..6c7462a04 100644
--- a/data_descriptors/variables/ap6hrpt.ts.json
+++ b/data_descriptors/variables/ap6hrpt.ts.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.ts.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.ua.json b/data_descriptors/variables/ap6hrpt.ua.json
index 5470fc5c4..beff3ee84 100644
--- a/data_descriptors/variables/ap6hrpt.ua.json
+++ b/data_descriptors/variables/ap6hrpt.ua.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.ua.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.ua7h.json b/data_descriptors/variables/ap6hrpt.ua7h.json
index d56d1858f..a1a266aed 100644
--- a/data_descriptors/variables/ap6hrpt.ua7h.json
+++ b/data_descriptors/variables/ap6hrpt.ua7h.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.ua7h.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.uas.json b/data_descriptors/variables/ap6hrpt.uas.json
index 0b293b12e..d647634fd 100644
--- a/data_descriptors/variables/ap6hrpt.uas.json
+++ b/data_descriptors/variables/ap6hrpt.uas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.uas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ap6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/ap6hrpt.va.json b/data_descriptors/variables/ap6hrpt.va.json
index c8b8bc462..bc6c1ec71 100644
--- a/data_descriptors/variables/ap6hrpt.va.json
+++ b/data_descriptors/variables/ap6hrpt.va.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ap6hrpt.va.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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index 560716513..6791b0524 100644
--- a/data_descriptors/variables/ap6hrpt.va7h.json
+++ b/data_descriptors/variables/ap6hrpt.va7h.json
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index 17c85bb56..b0268f8d1 100644
--- a/data_descriptors/variables/ap6hrpt.vas.json
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@@ -2,7 +2,7 @@
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index 6d980129d..f6157df76 100644
--- a/data_descriptors/variables/ap6hrpt.vortmean.json
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-  "mip-tables": [
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index d6ddfe90d..2a7e9688d 100644
--- a/data_descriptors/variables/ap6hrpt.wbptemp7h.json
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@@ -2,7 +2,7 @@
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index 015088a90..08a35059e 100644
--- a/data_descriptors/variables/ap6hrpt.zg27.json
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@@ -2,7 +2,7 @@
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-  "mip-tables": [
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index 19b039209..a67e96cc9 100644
--- a/data_descriptors/variables/ap6hrpt.zg7h.json
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index f42d5e7d7..a108f965a 100644
--- a/data_descriptors/variables/ap6hrptlev.hus.json
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-  "mip-tables": [
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index de13e9ecc..72dbec2c2 100644
--- a/data_descriptors/variables/ap6hrptlev.pfull.json
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-  "mip-tables": [
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index 1c9bcea55..ba783f0f4 100644
--- a/data_descriptors/variables/ap6hrptlev.ta.json
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-  "mip-tables": [
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index 29b9b37b1..fd5a6bad5 100644
--- a/data_descriptors/variables/ap6hrptlev.ua.json
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index 0d17dc9b2..7506af3e0 100644
--- a/data_descriptors/variables/ap6hrptlev.va.json
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index cdacead8f..13210afe5 100644
--- a/data_descriptors/variables/ap6hrptz.zmlwaero.json
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index d2d3967e2..707e53257 100644
--- a/data_descriptors/variables/ap6hrptz.zmswaero.json
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-  "mip-tables": [
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index c19ca8796..003442b90 100644
--- a/data_descriptors/variables/apday.albisccp.json
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@@ -2,7 +2,7 @@
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index 3e414bc30..967e95ff0 100644
--- a/data_descriptors/variables/apday.aod550volso4.json
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-  "mip-tables": [
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index 0bd2fdc28..f0f894c43 100644
--- a/data_descriptors/variables/apday.ccb.json
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-  "mip-tables": [
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index 3868d1fea..7777e3e5a 100644
--- a/data_descriptors/variables/apday.ccldncl.json
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@@ -2,7 +2,7 @@
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index 278a41684..36878e086 100644
--- a/data_descriptors/variables/apday.cct.json
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@@ -2,7 +2,7 @@
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diff --git a/data_descriptors/variables/apday.clcalipso.json b/data_descriptors/variables/apday.clcalipso.json
index eb828bf93..ae16a28fd 100644
--- a/data_descriptors/variables/apday.clcalipso.json
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@@ -2,7 +2,7 @@
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index 2ee02191d..b4ca5396b 100644
--- a/data_descriptors/variables/apday.cldnci.json
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@@ -2,7 +2,7 @@
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-  "mip-tables": [
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index 73a39075e..afef3d9ea 100644
--- a/data_descriptors/variables/apday.cldnvi.json
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@@ -2,7 +2,7 @@
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index 44ad1eebc..018bb5b45 100644
--- a/data_descriptors/variables/apday.clhcalipso.json
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@@ -2,7 +2,7 @@
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index c3d0e56e6..9f7a869d8 100644
--- a/data_descriptors/variables/apday.clisccp.json
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@@ -2,7 +2,7 @@
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diff --git a/data_descriptors/variables/apday.clivi.json b/data_descriptors/variables/apday.clivi.json
index 184ab49b4..2974e099c 100644
--- a/data_descriptors/variables/apday.clivi.json
+++ b/data_descriptors/variables/apday.clivi.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/apday.clivic.json b/data_descriptors/variables/apday.clivic.json
index 81c67df7c..101386243 100644
--- a/data_descriptors/variables/apday.clivic.json
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@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/apday.cllcalipso.json b/data_descriptors/variables/apday.cllcalipso.json
index 8f486b054..7f8800056 100644
--- a/data_descriptors/variables/apday.cllcalipso.json
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@@ -2,7 +2,7 @@
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-  "mip-tables": [
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index a36461d80..aa5a32956 100644
--- a/data_descriptors/variables/apday.clmcalipso.json
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@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/apday.clt.json b/data_descriptors/variables/apday.clt.json
index b8f43bac8..fd56b2e53 100644
--- a/data_descriptors/variables/apday.clt.json
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@@ -2,7 +2,7 @@
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diff --git a/data_descriptors/variables/apday.cltcalipso.json b/data_descriptors/variables/apday.cltcalipso.json
index 84d940d6f..188ccdacd 100644
--- a/data_descriptors/variables/apday.cltcalipso.json
+++ b/data_descriptors/variables/apday.cltcalipso.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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index d7b1c2f09..a54233d3f 100644
--- a/data_descriptors/variables/apday.cltisccp.json
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@@ -2,7 +2,7 @@
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index abc0b6fb7..893149d9c 100644
--- a/data_descriptors/variables/apday.clwvi.json
+++ b/data_descriptors/variables/apday.clwvi.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/apday.clwvic.json b/data_descriptors/variables/apday.clwvic.json
index 4028282fd..d48a6d225 100644
--- a/data_descriptors/variables/apday.clwvic.json
+++ b/data_descriptors/variables/apday.clwvic.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/apday.hfdsl.json b/data_descriptors/variables/apday.hfdsl.json
index 3001b0365..730a5d284 100644
--- a/data_descriptors/variables/apday.hfdsl.json
+++ b/data_descriptors/variables/apday.hfdsl.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/apday.hfdsnb.json b/data_descriptors/variables/apday.hfdsnb.json
index 2c5dbb469..48e826398 100644
--- a/data_descriptors/variables/apday.hfdsnb.json
+++ b/data_descriptors/variables/apday.hfdsnb.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/apday.hfls.json b/data_descriptors/variables/apday.hfls.json
index 72b774288..45191dd17 100644
--- a/data_descriptors/variables/apday.hfls.json
+++ b/data_descriptors/variables/apday.hfls.json
@@ -2,7 +2,7 @@
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   "id": "apday.hfls.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.hfmlt.json b/data_descriptors/variables/apday.hfmlt.json
index 525a2dada..da65b17ad 100644
--- a/data_descriptors/variables/apday.hfmlt.json
+++ b/data_descriptors/variables/apday.hfmlt.json
@@ -2,7 +2,7 @@
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   "id": "apday.hfmlt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.hfrs.json b/data_descriptors/variables/apday.hfrs.json
index 5d11fcb01..6f3695be3 100644
--- a/data_descriptors/variables/apday.hfrs.json
+++ b/data_descriptors/variables/apday.hfrs.json
@@ -2,7 +2,7 @@
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   "id": "apday.hfrs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.hfsbl.json b/data_descriptors/variables/apday.hfsbl.json
index 5a04cdfa6..a7d39dd9c 100644
--- a/data_descriptors/variables/apday.hfsbl.json
+++ b/data_descriptors/variables/apday.hfsbl.json
@@ -2,7 +2,7 @@
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   "id": "apday.hfsbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.hfss.json b/data_descriptors/variables/apday.hfss.json
index c329fe552..0bc45be11 100644
--- a/data_descriptors/variables/apday.hfss.json
+++ b/data_descriptors/variables/apday.hfss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.hfss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.hur.json b/data_descriptors/variables/apday.hur.json
index bb2a87345..cca1aa6d6 100644
--- a/data_descriptors/variables/apday.hur.json
+++ b/data_descriptors/variables/apday.hur.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.hur.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.hurs.json b/data_descriptors/variables/apday.hurs.json
index 4a3ef4c4f..d8628ce3e 100644
--- a/data_descriptors/variables/apday.hurs.json
+++ b/data_descriptors/variables/apday.hurs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.hurs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.hursmax.json b/data_descriptors/variables/apday.hursmax.json
index 4ff4f0ab5..05cc6a65a 100644
--- a/data_descriptors/variables/apday.hursmax.json
+++ b/data_descriptors/variables/apday.hursmax.json
@@ -2,7 +2,7 @@
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   "id": "apday.hursmax.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.hursmin.json b/data_descriptors/variables/apday.hursmin.json
index 63caa08e4..6527e4a16 100644
--- a/data_descriptors/variables/apday.hursmin.json
+++ b/data_descriptors/variables/apday.hursmin.json
@@ -2,7 +2,7 @@
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   "id": "apday.hursmin.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.hursmincrop.json b/data_descriptors/variables/apday.hursmincrop.json
index 494342729..9e1cf85e8 100644
--- a/data_descriptors/variables/apday.hursmincrop.json
+++ b/data_descriptors/variables/apday.hursmincrop.json
@@ -2,7 +2,7 @@
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   "id": "apday.hursmincrop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.hus19.json b/data_descriptors/variables/apday.hus19.json
index 9ed2df348..f88e46552 100644
--- a/data_descriptors/variables/apday.hus19.json
+++ b/data_descriptors/variables/apday.hus19.json
@@ -2,7 +2,7 @@
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   "id": "apday.hus19.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.hus8.json b/data_descriptors/variables/apday.hus8.json
index 55c0cab47..5459f17de 100644
--- a/data_descriptors/variables/apday.hus8.json
+++ b/data_descriptors/variables/apday.hus8.json
@@ -2,7 +2,7 @@
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   "id": "apday.hus8.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.hus850.json b/data_descriptors/variables/apday.hus850.json
index 25a2b8d81..06419c034 100644
--- a/data_descriptors/variables/apday.hus850.json
+++ b/data_descriptors/variables/apday.hus850.json
@@ -2,7 +2,7 @@
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   "id": "apday.hus850.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.huss.json b/data_descriptors/variables/apday.huss.json
index 3a51ce671..e42ee15a3 100644
--- a/data_descriptors/variables/apday.huss.json
+++ b/data_descriptors/variables/apday.huss.json
@@ -2,7 +2,7 @@
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   "id": "apday.huss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.jpdftaureicemodis.json b/data_descriptors/variables/apday.jpdftaureicemodis.json
index fa353cf6d..a934ce7d8 100644
--- a/data_descriptors/variables/apday.jpdftaureicemodis.json
+++ b/data_descriptors/variables/apday.jpdftaureicemodis.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.jpdftaureliqmodis.json b/data_descriptors/variables/apday.jpdftaureliqmodis.json
index 953643311..e9b74eda0 100644
--- a/data_descriptors/variables/apday.jpdftaureliqmodis.json
+++ b/data_descriptors/variables/apday.jpdftaureliqmodis.json
@@ -2,7 +2,7 @@
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   "id": "apday.jpdftaureliqmodis.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/apday.loadbc.json b/data_descriptors/variables/apday.loadbc.json
index e50195dad..81c82e7fa 100644
--- a/data_descriptors/variables/apday.loadbc.json
+++ b/data_descriptors/variables/apday.loadbc.json
@@ -2,7 +2,7 @@
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   "id": "apday.loadbc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.loaddust.json b/data_descriptors/variables/apday.loaddust.json
index 8f4893ab0..66ee72f96 100644
--- a/data_descriptors/variables/apday.loaddust.json
+++ b/data_descriptors/variables/apday.loaddust.json
@@ -2,7 +2,7 @@
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   "id": "apday.loaddust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.loadnh4.json b/data_descriptors/variables/apday.loadnh4.json
index 4b212c612..d70d6430e 100644
--- a/data_descriptors/variables/apday.loadnh4.json
+++ b/data_descriptors/variables/apday.loadnh4.json
@@ -2,7 +2,7 @@
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   "id": "apday.loadnh4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.loadno3.json b/data_descriptors/variables/apday.loadno3.json
index 5cd2d9028..4adbfe177 100644
--- a/data_descriptors/variables/apday.loadno3.json
+++ b/data_descriptors/variables/apday.loadno3.json
@@ -2,7 +2,7 @@
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   "id": "apday.loadno3.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.loadoa.json b/data_descriptors/variables/apday.loadoa.json
index 78037a156..b4512bb72 100644
--- a/data_descriptors/variables/apday.loadoa.json
+++ b/data_descriptors/variables/apday.loadoa.json
@@ -2,7 +2,7 @@
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   "id": "apday.loadoa.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/apday.loadpoa.json b/data_descriptors/variables/apday.loadpoa.json
index e10d4425d..a76219869 100644
--- a/data_descriptors/variables/apday.loadpoa.json
+++ b/data_descriptors/variables/apday.loadpoa.json
@@ -2,7 +2,7 @@
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   "id": "apday.loadpoa.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/apday.loadso4.json b/data_descriptors/variables/apday.loadso4.json
index 35531cf1d..db554da92 100644
--- a/data_descriptors/variables/apday.loadso4.json
+++ b/data_descriptors/variables/apday.loadso4.json
@@ -2,7 +2,7 @@
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   "id": "apday.loadso4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.loadsoa.json b/data_descriptors/variables/apday.loadsoa.json
index 07c8836b1..9bc82fe15 100644
--- a/data_descriptors/variables/apday.loadsoa.json
+++ b/data_descriptors/variables/apday.loadsoa.json
@@ -2,7 +2,7 @@
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   "id": "apday.loadsoa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.loadss.json b/data_descriptors/variables/apday.loadss.json
index b04f96da6..04d071cb3 100644
--- a/data_descriptors/variables/apday.loadss.json
+++ b/data_descriptors/variables/apday.loadss.json
@@ -2,7 +2,7 @@
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   "id": "apday.loadss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.parasolrefl.json b/data_descriptors/variables/apday.parasolrefl.json
index 4e9bb9028..f7f538a36 100644
--- a/data_descriptors/variables/apday.parasolrefl.json
+++ b/data_descriptors/variables/apday.parasolrefl.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.pctisccp.json b/data_descriptors/variables/apday.pctisccp.json
index 657c990e4..fe028b8d7 100644
--- a/data_descriptors/variables/apday.pctisccp.json
+++ b/data_descriptors/variables/apday.pctisccp.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/apday.pr.json b/data_descriptors/variables/apday.pr.json
index ad49ba5f3..5161c91e5 100644
--- a/data_descriptors/variables/apday.pr.json
+++ b/data_descriptors/variables/apday.pr.json
@@ -2,7 +2,7 @@
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   "id": "apday.pr.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.prc.json b/data_descriptors/variables/apday.prc.json
index 3f993fa14..e544cf547 100644
--- a/data_descriptors/variables/apday.prc.json
+++ b/data_descriptors/variables/apday.prc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.prc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.prcrop.json b/data_descriptors/variables/apday.prcrop.json
index 59772b951..51926ea58 100644
--- a/data_descriptors/variables/apday.prcrop.json
+++ b/data_descriptors/variables/apday.prcrop.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.prhmax.json b/data_descriptors/variables/apday.prhmax.json
index 9428f81f8..fd9270a65 100644
--- a/data_descriptors/variables/apday.prhmax.json
+++ b/data_descriptors/variables/apday.prhmax.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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diff --git a/data_descriptors/variables/apday.prra.json b/data_descriptors/variables/apday.prra.json
index 9adff76dc..bd6908e65 100644
--- a/data_descriptors/variables/apday.prra.json
+++ b/data_descriptors/variables/apday.prra.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
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   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/apday.prrc.json b/data_descriptors/variables/apday.prrc.json
index 3affb140b..541fe2693 100644
--- a/data_descriptors/variables/apday.prrc.json
+++ b/data_descriptors/variables/apday.prrc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.prrc.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/apday.prrsn.json b/data_descriptors/variables/apday.prrsn.json
index b17ad3dde..35a002813 100644
--- a/data_descriptors/variables/apday.prrsn.json
+++ b/data_descriptors/variables/apday.prrsn.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.prsn.json b/data_descriptors/variables/apday.prsn.json
index 8999a85fe..096ba0f6c 100644
--- a/data_descriptors/variables/apday.prsn.json
+++ b/data_descriptors/variables/apday.prsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.prsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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diff --git a/data_descriptors/variables/apday.prsnc.json b/data_descriptors/variables/apday.prsnc.json
index a294482ce..b258c9b48 100644
--- a/data_descriptors/variables/apday.prsnc.json
+++ b/data_descriptors/variables/apday.prsnc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.prsnc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.prsnsn.json b/data_descriptors/variables/apday.prsnsn.json
index ed5717992..801cee3df 100644
--- a/data_descriptors/variables/apday.prsnsn.json
+++ b/data_descriptors/variables/apday.prsnsn.json
@@ -2,7 +2,7 @@
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   "id": "apday.prsnsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.prw.json b/data_descriptors/variables/apday.prw.json
index 3f7cff87f..6eaec05ca 100644
--- a/data_descriptors/variables/apday.prw.json
+++ b/data_descriptors/variables/apday.prw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.prw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.ps.json b/data_descriptors/variables/apday.ps.json
index 90bdb91fc..bdcd4335c 100644
--- a/data_descriptors/variables/apday.ps.json
+++ b/data_descriptors/variables/apday.ps.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.ps.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.psl.json b/data_descriptors/variables/apday.psl.json
index 2a577424a..e33ca8bf0 100644
--- a/data_descriptors/variables/apday.psl.json
+++ b/data_descriptors/variables/apday.psl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.psl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.reffcclwtop.json b/data_descriptors/variables/apday.reffcclwtop.json
index 84d61f2a8..32c9bd461 100644
--- a/data_descriptors/variables/apday.reffcclwtop.json
+++ b/data_descriptors/variables/apday.reffcclwtop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.reffcclwtop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.reffsclwtop.json b/data_descriptors/variables/apday.reffsclwtop.json
index d9b3added..9f1ec7ffe 100644
--- a/data_descriptors/variables/apday.reffsclwtop.json
+++ b/data_descriptors/variables/apday.reffsclwtop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.reffsclwtop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rlds.json b/data_descriptors/variables/apday.rlds.json
index e94561d97..f9dcb6aac 100644
--- a/data_descriptors/variables/apday.rlds.json
+++ b/data_descriptors/variables/apday.rlds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.rlds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rldscs.json b/data_descriptors/variables/apday.rldscs.json
index f58e60c5c..cbb55f076 100644
--- a/data_descriptors/variables/apday.rldscs.json
+++ b/data_descriptors/variables/apday.rldscs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.rldscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rls.json b/data_descriptors/variables/apday.rls.json
index 3ddae4c00..79c6bc67b 100644
--- a/data_descriptors/variables/apday.rls.json
+++ b/data_descriptors/variables/apday.rls.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.rls.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rlus.json b/data_descriptors/variables/apday.rlus.json
index 625fc3e56..586ddeb95 100644
--- a/data_descriptors/variables/apday.rlus.json
+++ b/data_descriptors/variables/apday.rlus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.rlus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rlut.json b/data_descriptors/variables/apday.rlut.json
index 0b45d4739..45839576d 100644
--- a/data_descriptors/variables/apday.rlut.json
+++ b/data_descriptors/variables/apday.rlut.json
@@ -2,7 +2,7 @@
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   "id": "apday.rlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rlutcs.json b/data_descriptors/variables/apday.rlutcs.json
index f1f26830f..081923f2b 100644
--- a/data_descriptors/variables/apday.rlutcs.json
+++ b/data_descriptors/variables/apday.rlutcs.json
@@ -2,7 +2,7 @@
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   "id": "apday.rlutcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rsds.json b/data_descriptors/variables/apday.rsds.json
index 6a2a87e55..ad1284d24 100644
--- a/data_descriptors/variables/apday.rsds.json
+++ b/data_descriptors/variables/apday.rsds.json
@@ -2,7 +2,7 @@
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   "id": "apday.rsds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rsdscs.json b/data_descriptors/variables/apday.rsdscs.json
index eb28976a1..46ad79dc8 100644
--- a/data_descriptors/variables/apday.rsdscs.json
+++ b/data_descriptors/variables/apday.rsdscs.json
@@ -2,7 +2,7 @@
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   "id": "apday.rsdscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rsdscsdiff.json b/data_descriptors/variables/apday.rsdscsdiff.json
index 7857bbcc8..fcf777c58 100644
--- a/data_descriptors/variables/apday.rsdscsdiff.json
+++ b/data_descriptors/variables/apday.rsdscsdiff.json
@@ -2,7 +2,7 @@
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   "id": "apday.rsdscsdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rsdsdiff.json b/data_descriptors/variables/apday.rsdsdiff.json
index b800330ea..ed0e1b2e4 100644
--- a/data_descriptors/variables/apday.rsdsdiff.json
+++ b/data_descriptors/variables/apday.rsdsdiff.json
@@ -2,7 +2,7 @@
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   "id": "apday.rsdsdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rsdt.json b/data_descriptors/variables/apday.rsdt.json
index 71f42982a..fe3654aa2 100644
--- a/data_descriptors/variables/apday.rsdt.json
+++ b/data_descriptors/variables/apday.rsdt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.rsdt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rss.json b/data_descriptors/variables/apday.rss.json
index 13ee53343..534204eb9 100644
--- a/data_descriptors/variables/apday.rss.json
+++ b/data_descriptors/variables/apday.rss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.rss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rsus.json b/data_descriptors/variables/apday.rsus.json
index 7f7b82f04..fda5d3585 100644
--- a/data_descriptors/variables/apday.rsus.json
+++ b/data_descriptors/variables/apday.rsus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.rsus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rsuscs.json b/data_descriptors/variables/apday.rsuscs.json
index 01f732fe2..d95adad79 100644
--- a/data_descriptors/variables/apday.rsuscs.json
+++ b/data_descriptors/variables/apday.rsuscs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.rsuscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rsut.json b/data_descriptors/variables/apday.rsut.json
index 25ede7172..90e676ba1 100644
--- a/data_descriptors/variables/apday.rsut.json
+++ b/data_descriptors/variables/apday.rsut.json
@@ -2,7 +2,7 @@
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   "id": "apday.rsut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.rsutcs.json b/data_descriptors/variables/apday.rsutcs.json
index 2244fa4f6..39fcdfd2b 100644
--- a/data_descriptors/variables/apday.rsutcs.json
+++ b/data_descriptors/variables/apday.rsutcs.json
@@ -2,7 +2,7 @@
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   "id": "apday.rsutcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.sblnosn.json b/data_descriptors/variables/apday.sblnosn.json
index 8d7cbafec..c86ee0db6 100644
--- a/data_descriptors/variables/apday.sblnosn.json
+++ b/data_descriptors/variables/apday.sblnosn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.sblnosn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.scldncl.json b/data_descriptors/variables/apday.scldncl.json
index f0e5b6b9e..24749ce20 100644
--- a/data_descriptors/variables/apday.scldncl.json
+++ b/data_descriptors/variables/apday.scldncl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.scldncl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.sfcwind.json b/data_descriptors/variables/apday.sfcwind.json
index eef44db51..1ae989709 100644
--- a/data_descriptors/variables/apday.sfcwind.json
+++ b/data_descriptors/variables/apday.sfcwind.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.sfcwind.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.sfcwindmax.json b/data_descriptors/variables/apday.sfcwindmax.json
index 0f86d3b1b..380745468 100644
--- a/data_descriptors/variables/apday.sfcwindmax.json
+++ b/data_descriptors/variables/apday.sfcwindmax.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.sfcwindmax.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.snmsl.json b/data_descriptors/variables/apday.snmsl.json
index 7fbab4b20..52cb9c085 100644
--- a/data_descriptors/variables/apday.snmsl.json
+++ b/data_descriptors/variables/apday.snmsl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.snmsl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.snrefr.json b/data_descriptors/variables/apday.snrefr.json
index 035e90e22..9d456a457 100644
--- a/data_descriptors/variables/apday.snrefr.json
+++ b/data_descriptors/variables/apday.snrefr.json
@@ -2,7 +2,7 @@
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   "id": "apday.snrefr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.snwc.json b/data_descriptors/variables/apday.snwc.json
index dc80dfd10..bd669da1d 100644
--- a/data_descriptors/variables/apday.snwc.json
+++ b/data_descriptors/variables/apday.snwc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.snwc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.ta19.json b/data_descriptors/variables/apday.ta19.json
index b06722885..ed3c9e132 100644
--- a/data_descriptors/variables/apday.ta19.json
+++ b/data_descriptors/variables/apday.ta19.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.ta19.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.ta500.json b/data_descriptors/variables/apday.ta500.json
index b9dce2674..18d5b98be 100644
--- a/data_descriptors/variables/apday.ta500.json
+++ b/data_descriptors/variables/apday.ta500.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.ta500.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.ta700.json b/data_descriptors/variables/apday.ta700.json
index b3293010c..0f79be034 100644
--- a/data_descriptors/variables/apday.ta700.json
+++ b/data_descriptors/variables/apday.ta700.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.ta700.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.ta8.json b/data_descriptors/variables/apday.ta8.json
index 9d4175a8f..039e120f0 100644
--- a/data_descriptors/variables/apday.ta8.json
+++ b/data_descriptors/variables/apday.ta8.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.ta8.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.ta850.json b/data_descriptors/variables/apday.ta850.json
index 499189985..cf607d423 100644
--- a/data_descriptors/variables/apday.ta850.json
+++ b/data_descriptors/variables/apday.ta850.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.ta850.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.tas.json b/data_descriptors/variables/apday.tas.json
index d43d4f61f..57b423f77 100644
--- a/data_descriptors/variables/apday.tas.json
+++ b/data_descriptors/variables/apday.tas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.tas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.tasmax.json b/data_descriptors/variables/apday.tasmax.json
index 6af1873d3..e6348c498 100644
--- a/data_descriptors/variables/apday.tasmax.json
+++ b/data_descriptors/variables/apday.tasmax.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
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-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.tasmaxcrop.json b/data_descriptors/variables/apday.tasmaxcrop.json
index 55b65a16e..53af7c46d 100644
--- a/data_descriptors/variables/apday.tasmaxcrop.json
+++ b/data_descriptors/variables/apday.tasmaxcrop.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.tasmin.json b/data_descriptors/variables/apday.tasmin.json
index 514a92165..28a844e95 100644
--- a/data_descriptors/variables/apday.tasmin.json
+++ b/data_descriptors/variables/apday.tasmin.json
@@ -2,7 +2,7 @@
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   "id": "apday.tasmin.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.tasmincrop.json b/data_descriptors/variables/apday.tasmincrop.json
index 27213262b..62d6c4f53 100644
--- a/data_descriptors/variables/apday.tasmincrop.json
+++ b/data_descriptors/variables/apday.tasmincrop.json
@@ -2,7 +2,7 @@
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   "id": "apday.tasmincrop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.tau.json b/data_descriptors/variables/apday.tau.json
index 6ab0a5d49..80c694b55 100644
--- a/data_descriptors/variables/apday.tau.json
+++ b/data_descriptors/variables/apday.tau.json
@@ -2,7 +2,7 @@
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   "id": "apday.tau.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.tauu.json b/data_descriptors/variables/apday.tauu.json
index c0e71ee72..cb9deab98 100644
--- a/data_descriptors/variables/apday.tauu.json
+++ b/data_descriptors/variables/apday.tauu.json
@@ -2,7 +2,7 @@
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   "id": "apday.tauu.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.tauupbl.json b/data_descriptors/variables/apday.tauupbl.json
index de89e592d..464b53c49 100644
--- a/data_descriptors/variables/apday.tauupbl.json
+++ b/data_descriptors/variables/apday.tauupbl.json
@@ -2,7 +2,7 @@
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   "id": "apday.tauupbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.tauv.json b/data_descriptors/variables/apday.tauv.json
index 2cea7e8e8..badc9b476 100644
--- a/data_descriptors/variables/apday.tauv.json
+++ b/data_descriptors/variables/apday.tauv.json
@@ -2,7 +2,7 @@
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   "id": "apday.tauv.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.tauvpbl.json b/data_descriptors/variables/apday.tauvpbl.json
index 4e0d1085a..404671d23 100644
--- a/data_descriptors/variables/apday.tauvpbl.json
+++ b/data_descriptors/variables/apday.tauvpbl.json
@@ -2,7 +2,7 @@
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   "id": "apday.tauvpbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.tdps.json b/data_descriptors/variables/apday.tdps.json
index 87912789c..2a24bf918 100644
--- a/data_descriptors/variables/apday.tdps.json
+++ b/data_descriptors/variables/apday.tdps.json
@@ -2,7 +2,7 @@
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   "id": "apday.tdps.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.tr.json b/data_descriptors/variables/apday.tr.json
index e39978212..d1d56e770 100644
--- a/data_descriptors/variables/apday.tr.json
+++ b/data_descriptors/variables/apday.tr.json
@@ -2,7 +2,7 @@
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   "id": "apday.tr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.ts.json b/data_descriptors/variables/apday.ts.json
index 140a3715c..8b52ffdc0 100644
--- a/data_descriptors/variables/apday.ts.json
+++ b/data_descriptors/variables/apday.ts.json
@@ -2,7 +2,7 @@
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   "id": "apday.ts.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/apday.tsland.json b/data_descriptors/variables/apday.tsland.json
index 89b3e8f37..f4b438446 100644
--- a/data_descriptors/variables/apday.tsland.json
+++ b/data_descriptors/variables/apday.tsland.json
@@ -2,7 +2,7 @@
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   "id": "apday.tsland.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.tsns.json b/data_descriptors/variables/apday.tsns.json
index 7fedaea5f..0b917767e 100644
--- a/data_descriptors/variables/apday.tsns.json
+++ b/data_descriptors/variables/apday.tsns.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/apday.ua19.json b/data_descriptors/variables/apday.ua19.json
index 2e6bdebc9..917a5275a 100644
--- a/data_descriptors/variables/apday.ua19.json
+++ b/data_descriptors/variables/apday.ua19.json
@@ -2,7 +2,7 @@
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   "id": "apday.ua19.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.ua8.json b/data_descriptors/variables/apday.ua8.json
index 2214a186c..89fccd8df 100644
--- a/data_descriptors/variables/apday.ua8.json
+++ b/data_descriptors/variables/apday.ua8.json
@@ -2,7 +2,7 @@
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   "id": "apday.ua8.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.uas.json b/data_descriptors/variables/apday.uas.json
index 56d996115..c90750435 100644
--- a/data_descriptors/variables/apday.uas.json
+++ b/data_descriptors/variables/apday.uas.json
@@ -2,7 +2,7 @@
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   "id": "apday.uas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.va19.json b/data_descriptors/variables/apday.va19.json
index acbd7839b..15b52217f 100644
--- a/data_descriptors/variables/apday.va19.json
+++ b/data_descriptors/variables/apday.va19.json
@@ -2,7 +2,7 @@
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   "id": "apday.va19.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.va8.json b/data_descriptors/variables/apday.va8.json
index da9136259..3ba75a0cc 100644
--- a/data_descriptors/variables/apday.va8.json
+++ b/data_descriptors/variables/apday.va8.json
@@ -2,7 +2,7 @@
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   "id": "apday.va8.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.vas.json b/data_descriptors/variables/apday.vas.json
index ee7adb702..9e64c62f5 100644
--- a/data_descriptors/variables/apday.vas.json
+++ b/data_descriptors/variables/apday.vas.json
@@ -2,7 +2,7 @@
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   "id": "apday.vas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.wap19.json b/data_descriptors/variables/apday.wap19.json
index e3c979d8f..b1c16ac43 100644
--- a/data_descriptors/variables/apday.wap19.json
+++ b/data_descriptors/variables/apday.wap19.json
@@ -2,7 +2,7 @@
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   "id": "apday.wap19.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.wap500.json b/data_descriptors/variables/apday.wap500.json
index 62f613404..d41ff0688 100644
--- a/data_descriptors/variables/apday.wap500.json
+++ b/data_descriptors/variables/apday.wap500.json
@@ -2,7 +2,7 @@
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   "id": "apday.wap500.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.wap8.json b/data_descriptors/variables/apday.wap8.json
index af4afbf38..ba97dbe98 100644
--- a/data_descriptors/variables/apday.wap8.json
+++ b/data_descriptors/variables/apday.wap8.json
@@ -2,7 +2,7 @@
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   "id": "apday.wap8.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.zg1000.json b/data_descriptors/variables/apday.zg1000.json
index 06f35ab04..c20b5646c 100644
--- a/data_descriptors/variables/apday.zg1000.json
+++ b/data_descriptors/variables/apday.zg1000.json
@@ -2,7 +2,7 @@
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   "id": "apday.zg1000.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.zg19.json b/data_descriptors/variables/apday.zg19.json
index 56c461456..588e30a9b 100644
--- a/data_descriptors/variables/apday.zg19.json
+++ b/data_descriptors/variables/apday.zg19.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.zg19.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.zg8.json b/data_descriptors/variables/apday.zg8.json
index d5c88b3de..e19d46f0a 100644
--- a/data_descriptors/variables/apday.zg8.json
+++ b/data_descriptors/variables/apday.zg8.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apday.zg8.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apday.zmla.json b/data_descriptors/variables/apday.zmla.json
index b4dcf5c0f..eac9b0b7e 100644
--- a/data_descriptors/variables/apday.zmla.json
+++ b/data_descriptors/variables/apday.zmla.json
@@ -2,7 +2,7 @@
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   "id": "apday.zmla.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdaylev.cl.json b/data_descriptors/variables/apdaylev.cl.json
index e3e99ba4a..dc7e87d5d 100644
--- a/data_descriptors/variables/apdaylev.cl.json
+++ b/data_descriptors/variables/apdaylev.cl.json
@@ -2,7 +2,7 @@
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   "id": "apdaylev.cl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdaylev.cli.json b/data_descriptors/variables/apdaylev.cli.json
index 0121405c0..5d6b30e24 100644
--- a/data_descriptors/variables/apdaylev.cli.json
+++ b/data_descriptors/variables/apdaylev.cli.json
@@ -2,7 +2,7 @@
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   "id": "apdaylev.cli.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdaylev.clw.json b/data_descriptors/variables/apdaylev.clw.json
index ab536a758..c54bc1a04 100644
--- a/data_descriptors/variables/apdaylev.clw.json
+++ b/data_descriptors/variables/apdaylev.clw.json
@@ -2,7 +2,7 @@
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   "id": "apdaylev.clw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdaylev.hur.json b/data_descriptors/variables/apdaylev.hur.json
index 081f7bc75..d8618e63c 100644
--- a/data_descriptors/variables/apdaylev.hur.json
+++ b/data_descriptors/variables/apdaylev.hur.json
@@ -2,7 +2,7 @@
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   "id": "apdaylev.hur.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdaylev.hus.json b/data_descriptors/variables/apdaylev.hus.json
index 6abf3b1b5..d301fbbb0 100644
--- a/data_descriptors/variables/apdaylev.hus.json
+++ b/data_descriptors/variables/apdaylev.hus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apdaylev.hus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdaylev.mc.json b/data_descriptors/variables/apdaylev.mc.json
index 7c530a709..c4ed53b25 100644
--- a/data_descriptors/variables/apdaylev.mc.json
+++ b/data_descriptors/variables/apdaylev.mc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apdaylev.mc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdaylev.pfull.json b/data_descriptors/variables/apdaylev.pfull.json
index a97ad13d8..1d6de04bb 100644
--- a/data_descriptors/variables/apdaylev.pfull.json
+++ b/data_descriptors/variables/apdaylev.pfull.json
@@ -2,7 +2,7 @@
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   "id": "apdaylev.pfull.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdaylev.phalf.json b/data_descriptors/variables/apdaylev.phalf.json
index bfbfb3b22..2ff3c7508 100644
--- a/data_descriptors/variables/apdaylev.phalf.json
+++ b/data_descriptors/variables/apdaylev.phalf.json
@@ -2,7 +2,7 @@
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   "id": "apdaylev.phalf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdaylev.ta.json b/data_descriptors/variables/apdaylev.ta.json
index 33644f11e..a930e612d 100644
--- a/data_descriptors/variables/apdaylev.ta.json
+++ b/data_descriptors/variables/apdaylev.ta.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apdaylev.ta.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdaylev.ua.json b/data_descriptors/variables/apdaylev.ua.json
index d23fb9999..6f232f751 100644
--- a/data_descriptors/variables/apdaylev.ua.json
+++ b/data_descriptors/variables/apdaylev.ua.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
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       "mip-era": "cmip6"
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index fcbaf9317..170e87b8e 100644
--- a/data_descriptors/variables/apdaylev.va.json
+++ b/data_descriptors/variables/apdaylev.va.json
@@ -2,7 +2,7 @@
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   "id": "apdaylev.va.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdaylev.wap.json b/data_descriptors/variables/apdaylev.wap.json
index 0d8d85287..eece89e12 100644
--- a/data_descriptors/variables/apdaylev.wap.json
+++ b/data_descriptors/variables/apdaylev.wap.json
@@ -2,7 +2,7 @@
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   "id": "apdaylev.wap.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdaylev.zg.json b/data_descriptors/variables/apdaylev.zg.json
index ea2ad17a5..ce677d748 100644
--- a/data_descriptors/variables/apdaylev.zg.json
+++ b/data_descriptors/variables/apdaylev.zg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apdaylev.zg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdayz.epfy.json b/data_descriptors/variables/apdayz.epfy.json
index 818687523..8fcd333f9 100644
--- a/data_descriptors/variables/apdayz.epfy.json
+++ b/data_descriptors/variables/apdayz.epfy.json
@@ -2,7 +2,7 @@
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   "id": "apdayz.epfy.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdayz.epfz.json b/data_descriptors/variables/apdayz.epfz.json
index 2f6982435..552921fd6 100644
--- a/data_descriptors/variables/apdayz.epfz.json
+++ b/data_descriptors/variables/apdayz.epfz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apdayz.epfz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdayz.hus.json b/data_descriptors/variables/apdayz.hus.json
index 8965a9992..8b7d0eac6 100644
--- a/data_descriptors/variables/apdayz.hus.json
+++ b/data_descriptors/variables/apdayz.hus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apdayz.hus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdayz.psitem.json b/data_descriptors/variables/apdayz.psitem.json
index f5057503c..f1475010f 100644
--- a/data_descriptors/variables/apdayz.psitem.json
+++ b/data_descriptors/variables/apdayz.psitem.json
@@ -2,7 +2,7 @@
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   "id": "apdayz.psitem.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdayz.ta.json b/data_descriptors/variables/apdayz.ta.json
index 5b154b05d..9eee2f0e3 100644
--- a/data_descriptors/variables/apdayz.ta.json
+++ b/data_descriptors/variables/apdayz.ta.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apdayz.ta.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdayz.ua.json b/data_descriptors/variables/apdayz.ua.json
index de360216d..a35e19e73 100644
--- a/data_descriptors/variables/apdayz.ua.json
+++ b/data_descriptors/variables/apdayz.ua.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apdayz.ua.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdayz.utendepfd.json b/data_descriptors/variables/apdayz.utendepfd.json
index 411a4b6d2..c74bc4c55 100644
--- a/data_descriptors/variables/apdayz.utendepfd.json
+++ b/data_descriptors/variables/apdayz.utendepfd.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdayz.utendnogw.json b/data_descriptors/variables/apdayz.utendnogw.json
index 94d68e7f8..ca7fc46c9 100644
--- a/data_descriptors/variables/apdayz.utendnogw.json
+++ b/data_descriptors/variables/apdayz.utendnogw.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdayz.utendogw.json b/data_descriptors/variables/apdayz.utendogw.json
index b26cdf822..9a1ba7437 100644
--- a/data_descriptors/variables/apdayz.utendogw.json
+++ b/data_descriptors/variables/apdayz.utendogw.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdayz.utendvtem.json b/data_descriptors/variables/apdayz.utendvtem.json
index bb1501859..e6dd0557b 100644
--- a/data_descriptors/variables/apdayz.utendvtem.json
+++ b/data_descriptors/variables/apdayz.utendvtem.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdayz.utendwtem.json b/data_descriptors/variables/apdayz.utendwtem.json
index 97e110295..3c362934f 100644
--- a/data_descriptors/variables/apdayz.utendwtem.json
+++ b/data_descriptors/variables/apdayz.utendwtem.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdayz.va.json b/data_descriptors/variables/apdayz.va.json
index b32c4f41a..0d628f83d 100644
--- a/data_descriptors/variables/apdayz.va.json
+++ b/data_descriptors/variables/apdayz.va.json
@@ -2,7 +2,7 @@
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   "id": "apdayz.va.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdayz.vtem.json b/data_descriptors/variables/apdayz.vtem.json
index 42587294d..d7175f3ed 100644
--- a/data_descriptors/variables/apdayz.vtem.json
+++ b/data_descriptors/variables/apdayz.vtem.json
@@ -2,7 +2,7 @@
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   "id": "apdayz.vtem.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdayz.wtem.json b/data_descriptors/variables/apdayz.wtem.json
index 71e0c31cc..5830ce288 100644
--- a/data_descriptors/variables/apdayz.wtem.json
+++ b/data_descriptors/variables/apdayz.wtem.json
@@ -2,7 +2,7 @@
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   "id": "apdayz.wtem.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apdayz.zg.json b/data_descriptors/variables/apdayz.zg.json
index d82a5f03b..115206976 100644
--- a/data_descriptors/variables/apdayz.zg.json
+++ b/data_descriptors/variables/apdayz.zg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apdayz.zg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apfx.areacella.json b/data_descriptors/variables/apfx.areacella.json
index 35857c9a7..eecdeaae6 100644
--- a/data_descriptors/variables/apfx.areacella.json
+++ b/data_descriptors/variables/apfx.areacella.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apfx.areacella.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apfx.ps.json b/data_descriptors/variables/apfx.ps.json
index d1b485f24..e731e9280 100644
--- a/data_descriptors/variables/apfx.ps.json
+++ b/data_descriptors/variables/apfx.ps.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apfx.ps.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "apfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apfx.rld.json b/data_descriptors/variables/apfx.rld.json
index 92c738faf..7ce1466c6 100644
--- a/data_descriptors/variables/apfx.rld.json
+++ b/data_descriptors/variables/apfx.rld.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apfx.rld.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apfx.rlu.json b/data_descriptors/variables/apfx.rlu.json
index 4dc82feec..21cc956e8 100644
--- a/data_descriptors/variables/apfx.rlu.json
+++ b/data_descriptors/variables/apfx.rlu.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apfx.rlu.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apfx.rsd.json b/data_descriptors/variables/apfx.rsd.json
index 17ecaea57..9a7746077 100644
--- a/data_descriptors/variables/apfx.rsd.json
+++ b/data_descriptors/variables/apfx.rsd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apfx.rsd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apfx.rsu.json b/data_descriptors/variables/apfx.rsu.json
index f034e4169..1ded91df4 100644
--- a/data_descriptors/variables/apfx.rsu.json
+++ b/data_descriptors/variables/apfx.rsu.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apfx.rsu.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apfx.sftlf.json b/data_descriptors/variables/apfx.sftlf.json
index e6cd8bab6..793c75354 100644
--- a/data_descriptors/variables/apfx.sftlf.json
+++ b/data_descriptors/variables/apfx.sftlf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apfx.sftlf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apfx.siltfrac.json b/data_descriptors/variables/apfx.siltfrac.json
index def285f3c..3f0f649cc 100644
--- a/data_descriptors/variables/apfx.siltfrac.json
+++ b/data_descriptors/variables/apfx.siltfrac.json
@@ -2,7 +2,7 @@
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   "id": "apfx.siltfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apfx.zfull.json b/data_descriptors/variables/apfx.zfull.json
index b7e9d986e..19e7616b2 100644
--- a/data_descriptors/variables/apfx.zfull.json
+++ b/data_descriptors/variables/apfx.zfull.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apfx.zfull.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.albisccp.json b/data_descriptors/variables/apmon.albisccp.json
index b1475a7f8..cd75eb1f8 100644
--- a/data_descriptors/variables/apmon.albisccp.json
+++ b/data_descriptors/variables/apmon.albisccp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.albisccp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.ccb.json b/data_descriptors/variables/apmon.ccb.json
index eb816a285..eca1be0fc 100644
--- a/data_descriptors/variables/apmon.ccb.json
+++ b/data_descriptors/variables/apmon.ccb.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.ccb.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.cct.json b/data_descriptors/variables/apmon.cct.json
index 4922c7810..ff218a1d2 100644
--- a/data_descriptors/variables/apmon.cct.json
+++ b/data_descriptors/variables/apmon.cct.json
@@ -2,7 +2,7 @@
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   "id": "apmon.cct.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.cfaddbze94.json b/data_descriptors/variables/apmon.cfaddbze94.json
index 2ae98697d..96e9e45d3 100644
--- a/data_descriptors/variables/apmon.cfaddbze94.json
+++ b/data_descriptors/variables/apmon.cfaddbze94.json
@@ -2,7 +2,7 @@
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   "id": "apmon.cfaddbze94.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.cfadlidarsr532.json b/data_descriptors/variables/apmon.cfadlidarsr532.json
index 4065e7e97..0c1910d12 100644
--- a/data_descriptors/variables/apmon.cfadlidarsr532.json
+++ b/data_descriptors/variables/apmon.cfadlidarsr532.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.cfadlidarsr532.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.cfc113global.json b/data_descriptors/variables/apmon.cfc113global.json
index 1a0fd375c..d0ccad124 100644
--- a/data_descriptors/variables/apmon.cfc113global.json
+++ b/data_descriptors/variables/apmon.cfc113global.json
@@ -2,7 +2,7 @@
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   "id": "apmon.cfc113global.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.cfc11global.json b/data_descriptors/variables/apmon.cfc11global.json
index 8aad82ef4..ccb6ab362 100644
--- a/data_descriptors/variables/apmon.cfc11global.json
+++ b/data_descriptors/variables/apmon.cfc11global.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.cfc12global.json b/data_descriptors/variables/apmon.cfc12global.json
index b79e170f3..d098d523e 100644
--- a/data_descriptors/variables/apmon.cfc12global.json
+++ b/data_descriptors/variables/apmon.cfc12global.json
@@ -2,7 +2,7 @@
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   "id": "apmon.cfc12global.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.ch4.json b/data_descriptors/variables/apmon.ch4.json
index d03453f11..172844975 100644
--- a/data_descriptors/variables/apmon.ch4.json
+++ b/data_descriptors/variables/apmon.ch4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.ch4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.ch4global.json b/data_descriptors/variables/apmon.ch4global.json
index bb3a25da3..cc1660688 100644
--- a/data_descriptors/variables/apmon.ch4global.json
+++ b/data_descriptors/variables/apmon.ch4global.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.ch4global.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.ci.json b/data_descriptors/variables/apmon.ci.json
index 471bfa764..5b101117c 100644
--- a/data_descriptors/variables/apmon.ci.json
+++ b/data_descriptors/variables/apmon.ci.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.ci.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.clcalipso.json b/data_descriptors/variables/apmon.clcalipso.json
index bb5d3cd4b..d3eca4cda 100644
--- a/data_descriptors/variables/apmon.clcalipso.json
+++ b/data_descriptors/variables/apmon.clcalipso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.clcalipso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.clcalipsoice.json b/data_descriptors/variables/apmon.clcalipsoice.json
index 9d37a1605..d669bea22 100644
--- a/data_descriptors/variables/apmon.clcalipsoice.json
+++ b/data_descriptors/variables/apmon.clcalipsoice.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.clcalipsoice.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.clcalipsoliq.json b/data_descriptors/variables/apmon.clcalipsoliq.json
index cb5bc42e5..d940a8f10 100644
--- a/data_descriptors/variables/apmon.clcalipsoliq.json
+++ b/data_descriptors/variables/apmon.clcalipsoliq.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.clcalipsoliq.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.cldicemxrat27.json b/data_descriptors/variables/apmon.cldicemxrat27.json
index 870496934..102470c66 100644
--- a/data_descriptors/variables/apmon.cldicemxrat27.json
+++ b/data_descriptors/variables/apmon.cldicemxrat27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.cldicemxrat27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.cldnci.json b/data_descriptors/variables/apmon.cldnci.json
index fcf7e2b62..67f748a5a 100644
--- a/data_descriptors/variables/apmon.cldnci.json
+++ b/data_descriptors/variables/apmon.cldnci.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.cldnci.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.cldncl.json b/data_descriptors/variables/apmon.cldncl.json
index 7b9f7ba08..6fb706b81 100644
--- a/data_descriptors/variables/apmon.cldncl.json
+++ b/data_descriptors/variables/apmon.cldncl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.cldncl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.cldnvi.json b/data_descriptors/variables/apmon.cldnvi.json
index 3b8fdfc78..38f9f5c15 100644
--- a/data_descriptors/variables/apmon.cldnvi.json
+++ b/data_descriptors/variables/apmon.cldnvi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.cldnvi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.cldwatmxrat27.json b/data_descriptors/variables/apmon.cldwatmxrat27.json
index fcdda616a..82aee5f69 100644
--- a/data_descriptors/variables/apmon.cldwatmxrat27.json
+++ b/data_descriptors/variables/apmon.cldwatmxrat27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.cldwatmxrat27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.clhcalipso.json b/data_descriptors/variables/apmon.clhcalipso.json
index 91d28c2a6..0f614b261 100644
--- a/data_descriptors/variables/apmon.clhcalipso.json
+++ b/data_descriptors/variables/apmon.clhcalipso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.clhcalipso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.climodis.json b/data_descriptors/variables/apmon.climodis.json
index 1f4d52723..aae9d77ed 100644
--- a/data_descriptors/variables/apmon.climodis.json
+++ b/data_descriptors/variables/apmon.climodis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.climodis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.clisccp.json b/data_descriptors/variables/apmon.clisccp.json
index a0b344625..c5eb5ae1c 100644
--- a/data_descriptors/variables/apmon.clisccp.json
+++ b/data_descriptors/variables/apmon.clisccp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.clisccp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.clivi.json b/data_descriptors/variables/apmon.clivi.json
index fef647981..39116edc7 100644
--- a/data_descriptors/variables/apmon.clivi.json
+++ b/data_descriptors/variables/apmon.clivi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.clivi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.cllcalipso.json b/data_descriptors/variables/apmon.cllcalipso.json
index 4653a5fb4..274458086 100644
--- a/data_descriptors/variables/apmon.cllcalipso.json
+++ b/data_descriptors/variables/apmon.cllcalipso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.cllcalipso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.clmcalipso.json b/data_descriptors/variables/apmon.clmcalipso.json
index 338e9594b..7582130e2 100644
--- a/data_descriptors/variables/apmon.clmcalipso.json
+++ b/data_descriptors/variables/apmon.clmcalipso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.clmcalipso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.clmisr.json b/data_descriptors/variables/apmon.clmisr.json
index 9107ad7ff..ac50826cd 100644
--- a/data_descriptors/variables/apmon.clmisr.json
+++ b/data_descriptors/variables/apmon.clmisr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.clmisr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.clt.json b/data_descriptors/variables/apmon.clt.json
index 005004c03..619eeecc0 100644
--- a/data_descriptors/variables/apmon.clt.json
+++ b/data_descriptors/variables/apmon.clt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.clt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.cltcalipso.json b/data_descriptors/variables/apmon.cltcalipso.json
index aab4bd170..3c9a830fc 100644
--- a/data_descriptors/variables/apmon.cltcalipso.json
+++ b/data_descriptors/variables/apmon.cltcalipso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.cltcalipso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.cltisccp.json b/data_descriptors/variables/apmon.cltisccp.json
index 56c720d14..59d6efcff 100644
--- a/data_descriptors/variables/apmon.cltisccp.json
+++ b/data_descriptors/variables/apmon.cltisccp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.cltisccp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.cltmodis.json b/data_descriptors/variables/apmon.cltmodis.json
index a6448d140..498fe212b 100644
--- a/data_descriptors/variables/apmon.cltmodis.json
+++ b/data_descriptors/variables/apmon.cltmodis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.cltmodis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.clwmodis.json b/data_descriptors/variables/apmon.clwmodis.json
index c923668c4..eed28a878 100644
--- a/data_descriptors/variables/apmon.clwmodis.json
+++ b/data_descriptors/variables/apmon.clwmodis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.clwmodis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.clwvi.json b/data_descriptors/variables/apmon.clwvi.json
index 257467cfe..50c314e6d 100644
--- a/data_descriptors/variables/apmon.clwvi.json
+++ b/data_descriptors/variables/apmon.clwvi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.clwvi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.clwvic.json b/data_descriptors/variables/apmon.clwvic.json
index 3f1888b83..a90aecafb 100644
--- a/data_descriptors/variables/apmon.clwvic.json
+++ b/data_descriptors/variables/apmon.clwvic.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.clwvic.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.co2.json b/data_descriptors/variables/apmon.co2.json
index 6a5768ef3..6fcf96583 100644
--- a/data_descriptors/variables/apmon.co2.json
+++ b/data_descriptors/variables/apmon.co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.co2mass.json b/data_descriptors/variables/apmon.co2mass.json
index 1b83f2705..c679dbb1a 100644
--- a/data_descriptors/variables/apmon.co2mass.json
+++ b/data_descriptors/variables/apmon.co2mass.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.co2mass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.co2s.json b/data_descriptors/variables/apmon.co2s.json
index 03c748d93..c903486b9 100644
--- a/data_descriptors/variables/apmon.co2s.json
+++ b/data_descriptors/variables/apmon.co2s.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.co2s.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.columnmassflux.json b/data_descriptors/variables/apmon.columnmassflux.json
index dcdc18078..88061c0a6 100644
--- a/data_descriptors/variables/apmon.columnmassflux.json
+++ b/data_descriptors/variables/apmon.columnmassflux.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.columnmassflux.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.diabdrag.json b/data_descriptors/variables/apmon.diabdrag.json
index e11b95524..4ce26f99a 100644
--- a/data_descriptors/variables/apmon.diabdrag.json
+++ b/data_descriptors/variables/apmon.diabdrag.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.diabdrag.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.evspsbl.json b/data_descriptors/variables/apmon.evspsbl.json
index 091406e30..40c0b74f5 100644
--- a/data_descriptors/variables/apmon.evspsbl.json
+++ b/data_descriptors/variables/apmon.evspsbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.evspsbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.fco2antt.json b/data_descriptors/variables/apmon.fco2antt.json
index eb7e2ec3b..4ca626e43 100644
--- a/data_descriptors/variables/apmon.fco2antt.json
+++ b/data_descriptors/variables/apmon.fco2antt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.fco2antt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.fco2fos.json b/data_descriptors/variables/apmon.fco2fos.json
index 581111a53..fbd0246c4 100644
--- a/data_descriptors/variables/apmon.fco2fos.json
+++ b/data_descriptors/variables/apmon.fco2fos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.fco2fos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.fco2nat.json b/data_descriptors/variables/apmon.fco2nat.json
index f2b3a5d4b..02a40cc1c 100644
--- a/data_descriptors/variables/apmon.fco2nat.json
+++ b/data_descriptors/variables/apmon.fco2nat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.fco2nat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.grplmxrat27.json b/data_descriptors/variables/apmon.grplmxrat27.json
index 691eda749..4b0c624a9 100644
--- a/data_descriptors/variables/apmon.grplmxrat27.json
+++ b/data_descriptors/variables/apmon.grplmxrat27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.grplmxrat27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.hcfc22global.json b/data_descriptors/variables/apmon.hcfc22global.json
index bd82b728f..939c90e66 100644
--- a/data_descriptors/variables/apmon.hcfc22global.json
+++ b/data_descriptors/variables/apmon.hcfc22global.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.hcfc22global.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.hfls.json b/data_descriptors/variables/apmon.hfls.json
index f763663e2..cdf82e02e 100644
--- a/data_descriptors/variables/apmon.hfls.json
+++ b/data_descriptors/variables/apmon.hfls.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.hfls.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.hfss.json b/data_descriptors/variables/apmon.hfss.json
index 2e8fd98bd..e0f012357 100644
--- a/data_descriptors/variables/apmon.hfss.json
+++ b/data_descriptors/variables/apmon.hfss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.hfss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.hur.json b/data_descriptors/variables/apmon.hur.json
index 8a2df89a1..03f335286 100644
--- a/data_descriptors/variables/apmon.hur.json
+++ b/data_descriptors/variables/apmon.hur.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.hur.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.hurs.json b/data_descriptors/variables/apmon.hurs.json
index 070a0e1c7..d0d047a88 100644
--- a/data_descriptors/variables/apmon.hurs.json
+++ b/data_descriptors/variables/apmon.hurs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.hurs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.hursmincrop.json b/data_descriptors/variables/apmon.hursmincrop.json
index a2ab4c6b6..ffbc5563e 100644
--- a/data_descriptors/variables/apmon.hursmincrop.json
+++ b/data_descriptors/variables/apmon.hursmincrop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.hursmincrop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.hus19.json b/data_descriptors/variables/apmon.hus19.json
index d829d0b5e..570c0300f 100644
--- a/data_descriptors/variables/apmon.hus19.json
+++ b/data_descriptors/variables/apmon.hus19.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.hus19.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.hus27.json b/data_descriptors/variables/apmon.hus27.json
index a19a696d4..1dade1113 100644
--- a/data_descriptors/variables/apmon.hus27.json
+++ b/data_descriptors/variables/apmon.hus27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.hus27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.hus7h.json b/data_descriptors/variables/apmon.hus7h.json
index 81669d592..4c9c3635c 100644
--- a/data_descriptors/variables/apmon.hus7h.json
+++ b/data_descriptors/variables/apmon.hus7h.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.hus7h.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.huss.json b/data_descriptors/variables/apmon.huss.json
index ecfd719a1..5ddd3903e 100644
--- a/data_descriptors/variables/apmon.huss.json
+++ b/data_descriptors/variables/apmon.huss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.huss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.intuadse.json b/data_descriptors/variables/apmon.intuadse.json
index 23406ca14..e40b42d96 100644
--- a/data_descriptors/variables/apmon.intuadse.json
+++ b/data_descriptors/variables/apmon.intuadse.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.intuadse.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.intuaw.json b/data_descriptors/variables/apmon.intuaw.json
index 22503975a..bc977b170 100644
--- a/data_descriptors/variables/apmon.intuaw.json
+++ b/data_descriptors/variables/apmon.intuaw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.intuaw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.intvadse.json b/data_descriptors/variables/apmon.intvadse.json
index 7d30e22ac..1e30b92cd 100644
--- a/data_descriptors/variables/apmon.intvadse.json
+++ b/data_descriptors/variables/apmon.intvadse.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.intvadse.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.intvaw.json b/data_descriptors/variables/apmon.intvaw.json
index 26321b5c0..9c55261a0 100644
--- a/data_descriptors/variables/apmon.intvaw.json
+++ b/data_descriptors/variables/apmon.intvaw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.intvaw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.jpdftaureicemodis.json b/data_descriptors/variables/apmon.jpdftaureicemodis.json
index f3641708c..694a026f0 100644
--- a/data_descriptors/variables/apmon.jpdftaureicemodis.json
+++ b/data_descriptors/variables/apmon.jpdftaureicemodis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.jpdftaureicemodis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.jpdftaureliqmodis.json b/data_descriptors/variables/apmon.jpdftaureliqmodis.json
index bd8f9f2d4..b4ceb5b1d 100644
--- a/data_descriptors/variables/apmon.jpdftaureliqmodis.json
+++ b/data_descriptors/variables/apmon.jpdftaureliqmodis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.jpdftaureliqmodis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.loaddust.json b/data_descriptors/variables/apmon.loaddust.json
index 4780b7db1..c438991f1 100644
--- a/data_descriptors/variables/apmon.loaddust.json
+++ b/data_descriptors/variables/apmon.loaddust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.loaddust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.loadso4.json b/data_descriptors/variables/apmon.loadso4.json
index 16bcf1b9e..634139c08 100644
--- a/data_descriptors/variables/apmon.loadso4.json
+++ b/data_descriptors/variables/apmon.loadso4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.loadso4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.loadss.json b/data_descriptors/variables/apmon.loadss.json
index 73da714e6..7c3d67cab 100644
--- a/data_descriptors/variables/apmon.loadss.json
+++ b/data_descriptors/variables/apmon.loadss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.loadss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.lwsrfasdust.json b/data_descriptors/variables/apmon.lwsrfasdust.json
index 8b5df4ba5..3096ca0ca 100644
--- a/data_descriptors/variables/apmon.lwsrfasdust.json
+++ b/data_descriptors/variables/apmon.lwsrfasdust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.lwsrfasdust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.lwsrfcsdust.json b/data_descriptors/variables/apmon.lwsrfcsdust.json
index 9db9a53c2..97732c15a 100644
--- a/data_descriptors/variables/apmon.lwsrfcsdust.json
+++ b/data_descriptors/variables/apmon.lwsrfcsdust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.lwsrfcsdust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.lwtoaasdust.json b/data_descriptors/variables/apmon.lwtoaasdust.json
index f400fbb3a..4d88b6d66 100644
--- a/data_descriptors/variables/apmon.lwtoaasdust.json
+++ b/data_descriptors/variables/apmon.lwtoaasdust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.lwtoaasdust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.lwtoacsaer.json b/data_descriptors/variables/apmon.lwtoacsaer.json
index 49d7c9d90..93425a5ea 100644
--- a/data_descriptors/variables/apmon.lwtoacsaer.json
+++ b/data_descriptors/variables/apmon.lwtoacsaer.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.lwtoacsaer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.lwtoacsdust.json b/data_descriptors/variables/apmon.lwtoacsdust.json
index b6f9646bd..cdc38a325 100644
--- a/data_descriptors/variables/apmon.lwtoacsdust.json
+++ b/data_descriptors/variables/apmon.lwtoacsdust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.lwtoacsdust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.n2o.json b/data_descriptors/variables/apmon.n2o.json
index 412d4005f..e412400ae 100644
--- a/data_descriptors/variables/apmon.n2o.json
+++ b/data_descriptors/variables/apmon.n2o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.n2o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.n2oglobal.json b/data_descriptors/variables/apmon.n2oglobal.json
index 05287eb59..cae997b5a 100644
--- a/data_descriptors/variables/apmon.n2oglobal.json
+++ b/data_descriptors/variables/apmon.n2oglobal.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.n2oglobal.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.o3.json b/data_descriptors/variables/apmon.o3.json
index 3945ef36e..38efc816d 100644
--- a/data_descriptors/variables/apmon.o3.json
+++ b/data_descriptors/variables/apmon.o3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.o3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.od443dust.json b/data_descriptors/variables/apmon.od443dust.json
index a5b622e81..df26a1748 100644
--- a/data_descriptors/variables/apmon.od443dust.json
+++ b/data_descriptors/variables/apmon.od443dust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.od443dust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.od550aerso.json b/data_descriptors/variables/apmon.od550aerso.json
index 27564e242..4bc3de3d1 100644
--- a/data_descriptors/variables/apmon.od550aerso.json
+++ b/data_descriptors/variables/apmon.od550aerso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.od550aerso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.od550so4so.json b/data_descriptors/variables/apmon.od550so4so.json
index ef5d0e890..e0264eb82 100644
--- a/data_descriptors/variables/apmon.od550so4so.json
+++ b/data_descriptors/variables/apmon.od550so4so.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.od550so4so.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.od865dust.json b/data_descriptors/variables/apmon.od865dust.json
index 3718a2c47..ab3a9be16 100644
--- a/data_descriptors/variables/apmon.od865dust.json
+++ b/data_descriptors/variables/apmon.od865dust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.od865dust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.parasolrefl.json b/data_descriptors/variables/apmon.parasolrefl.json
index 38628f085..1d06a828d 100644
--- a/data_descriptors/variables/apmon.parasolrefl.json
+++ b/data_descriptors/variables/apmon.parasolrefl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.parasolrefl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.pctisccp.json b/data_descriptors/variables/apmon.pctisccp.json
index 66baeff59..c8177a020 100644
--- a/data_descriptors/variables/apmon.pctisccp.json
+++ b/data_descriptors/variables/apmon.pctisccp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.pctisccp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.pr.json b/data_descriptors/variables/apmon.pr.json
index e7e223a02..fc31cb3c9 100644
--- a/data_descriptors/variables/apmon.pr.json
+++ b/data_descriptors/variables/apmon.pr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.pr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.pr17o.json b/data_descriptors/variables/apmon.pr17o.json
index a6ec35c6d..7004483ab 100644
--- a/data_descriptors/variables/apmon.pr17o.json
+++ b/data_descriptors/variables/apmon.pr17o.json
@@ -2,7 +2,7 @@
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   "id": "apmon.pr17o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.pr18o.json b/data_descriptors/variables/apmon.pr18o.json
index 1affd23d8..aa20f734d 100644
--- a/data_descriptors/variables/apmon.pr18o.json
+++ b/data_descriptors/variables/apmon.pr18o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.pr18o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.pr2h.json b/data_descriptors/variables/apmon.pr2h.json
index 200cce8e4..d53659988 100644
--- a/data_descriptors/variables/apmon.pr2h.json
+++ b/data_descriptors/variables/apmon.pr2h.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.pr2h.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.prc.json b/data_descriptors/variables/apmon.prc.json
index bdbebd7b8..e62884f86 100644
--- a/data_descriptors/variables/apmon.prc.json
+++ b/data_descriptors/variables/apmon.prc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.prc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.prcrop.json b/data_descriptors/variables/apmon.prcrop.json
index 92f35aa46..144e32312 100644
--- a/data_descriptors/variables/apmon.prcrop.json
+++ b/data_descriptors/variables/apmon.prcrop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.prcrop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.prhmax.json b/data_descriptors/variables/apmon.prhmax.json
index 0b2099f4f..540049772 100644
--- a/data_descriptors/variables/apmon.prhmax.json
+++ b/data_descriptors/variables/apmon.prhmax.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.prhmax.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.prra.json b/data_descriptors/variables/apmon.prra.json
index 567df9967..c65a2d373 100644
--- a/data_descriptors/variables/apmon.prra.json
+++ b/data_descriptors/variables/apmon.prra.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.prra.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.prsn.json b/data_descriptors/variables/apmon.prsn.json
index d870acb38..3dce3d29b 100644
--- a/data_descriptors/variables/apmon.prsn.json
+++ b/data_descriptors/variables/apmon.prsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.prsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.prsn17o.json b/data_descriptors/variables/apmon.prsn17o.json
index 04e5ab48f..286edff40 100644
--- a/data_descriptors/variables/apmon.prsn17o.json
+++ b/data_descriptors/variables/apmon.prsn17o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.prsn17o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.prsn18o.json b/data_descriptors/variables/apmon.prsn18o.json
index f2f8bdad9..53167b0b6 100644
--- a/data_descriptors/variables/apmon.prsn18o.json
+++ b/data_descriptors/variables/apmon.prsn18o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.prsn18o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.prsn2h.json b/data_descriptors/variables/apmon.prsn2h.json
index 5e3a9225e..1d7c4fb7c 100644
--- a/data_descriptors/variables/apmon.prsn2h.json
+++ b/data_descriptors/variables/apmon.prsn2h.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.prsn2h.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.prw.json b/data_descriptors/variables/apmon.prw.json
index 24820c509..1128795e8 100644
--- a/data_descriptors/variables/apmon.prw.json
+++ b/data_descriptors/variables/apmon.prw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.prw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.ps.json b/data_descriptors/variables/apmon.ps.json
index 2f502a6ff..abee65c3a 100644
--- a/data_descriptors/variables/apmon.ps.json
+++ b/data_descriptors/variables/apmon.ps.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.ps.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.psl.json b/data_descriptors/variables/apmon.psl.json
index f62545564..f34e7dbba 100644
--- a/data_descriptors/variables/apmon.psl.json
+++ b/data_descriptors/variables/apmon.psl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.psl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rainmxrat27.json b/data_descriptors/variables/apmon.rainmxrat27.json
index d7fb152f8..227807773 100644
--- a/data_descriptors/variables/apmon.rainmxrat27.json
+++ b/data_descriptors/variables/apmon.rainmxrat27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rainmxrat27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rlds.json b/data_descriptors/variables/apmon.rlds.json
index 72bb9d4b3..73644f2e9 100644
--- a/data_descriptors/variables/apmon.rlds.json
+++ b/data_descriptors/variables/apmon.rlds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rlds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rldscs.json b/data_descriptors/variables/apmon.rldscs.json
index 20800687d..a97786d54 100644
--- a/data_descriptors/variables/apmon.rldscs.json
+++ b/data_descriptors/variables/apmon.rldscs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rldscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rls.json b/data_descriptors/variables/apmon.rls.json
index 9990e7881..2abb55448 100644
--- a/data_descriptors/variables/apmon.rls.json
+++ b/data_descriptors/variables/apmon.rls.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rls.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rlus.json b/data_descriptors/variables/apmon.rlus.json
index 0691ba11f..eab2def6b 100644
--- a/data_descriptors/variables/apmon.rlus.json
+++ b/data_descriptors/variables/apmon.rlus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rlus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rlut.json b/data_descriptors/variables/apmon.rlut.json
index b8562b95d..e4a545329 100644
--- a/data_descriptors/variables/apmon.rlut.json
+++ b/data_descriptors/variables/apmon.rlut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rlut4co2.json b/data_descriptors/variables/apmon.rlut4co2.json
index de310158b..cc3ad74b8 100644
--- a/data_descriptors/variables/apmon.rlut4co2.json
+++ b/data_descriptors/variables/apmon.rlut4co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rlut4co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rlutcs.json b/data_descriptors/variables/apmon.rlutcs.json
index df27360d0..f830335ff 100644
--- a/data_descriptors/variables/apmon.rlutcs.json
+++ b/data_descriptors/variables/apmon.rlutcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rlutcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rlutcs4co2.json b/data_descriptors/variables/apmon.rlutcs4co2.json
index afc4f0683..51f7eb441 100644
--- a/data_descriptors/variables/apmon.rlutcs4co2.json
+++ b/data_descriptors/variables/apmon.rlutcs4co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rlutcs4co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rsds.json b/data_descriptors/variables/apmon.rsds.json
index 22842edea..10ca75d98 100644
--- a/data_descriptors/variables/apmon.rsds.json
+++ b/data_descriptors/variables/apmon.rsds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rsds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rsdscs.json b/data_descriptors/variables/apmon.rsdscs.json
index b0a49c5c2..aa6303bf7 100644
--- a/data_descriptors/variables/apmon.rsdscs.json
+++ b/data_descriptors/variables/apmon.rsdscs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rsdscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rsdscsdiff.json b/data_descriptors/variables/apmon.rsdscsdiff.json
index 6f10d2dbb..3aab85828 100644
--- a/data_descriptors/variables/apmon.rsdscsdiff.json
+++ b/data_descriptors/variables/apmon.rsdscsdiff.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rsdscsdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rsdsdiff.json b/data_descriptors/variables/apmon.rsdsdiff.json
index 2d058745c..3f639a824 100644
--- a/data_descriptors/variables/apmon.rsdsdiff.json
+++ b/data_descriptors/variables/apmon.rsdsdiff.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rsdsdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rsdt.json b/data_descriptors/variables/apmon.rsdt.json
index c9047b23c..6f070bb3f 100644
--- a/data_descriptors/variables/apmon.rsdt.json
+++ b/data_descriptors/variables/apmon.rsdt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rsdt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rss.json b/data_descriptors/variables/apmon.rss.json
index 848e8724f..d0c1f9a84 100644
--- a/data_descriptors/variables/apmon.rss.json
+++ b/data_descriptors/variables/apmon.rss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rsus.json b/data_descriptors/variables/apmon.rsus.json
index cd50179f8..2d3469c48 100644
--- a/data_descriptors/variables/apmon.rsus.json
+++ b/data_descriptors/variables/apmon.rsus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rsus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rsuscs.json b/data_descriptors/variables/apmon.rsuscs.json
index d0189fe48..6a3cc35b0 100644
--- a/data_descriptors/variables/apmon.rsuscs.json
+++ b/data_descriptors/variables/apmon.rsuscs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rsuscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rsut.json b/data_descriptors/variables/apmon.rsut.json
index 261a0c95d..96c552a5d 100644
--- a/data_descriptors/variables/apmon.rsut.json
+++ b/data_descriptors/variables/apmon.rsut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rsut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rsut4co2.json b/data_descriptors/variables/apmon.rsut4co2.json
index 7dd5c80fa..7532b0ed3 100644
--- a/data_descriptors/variables/apmon.rsut4co2.json
+++ b/data_descriptors/variables/apmon.rsut4co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rsut4co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rsutcs.json b/data_descriptors/variables/apmon.rsutcs.json
index ae2d8b3e1..c3059d05b 100644
--- a/data_descriptors/variables/apmon.rsutcs.json
+++ b/data_descriptors/variables/apmon.rsutcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rsutcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rsutcs4co2.json b/data_descriptors/variables/apmon.rsutcs4co2.json
index 993cdb90e..01663d299 100644
--- a/data_descriptors/variables/apmon.rsutcs4co2.json
+++ b/data_descriptors/variables/apmon.rsutcs4co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rsutcs4co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.rtmt.json b/data_descriptors/variables/apmon.rtmt.json
index eb1a1f7ef..196abb2bf 100644
--- a/data_descriptors/variables/apmon.rtmt.json
+++ b/data_descriptors/variables/apmon.rtmt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.rtmt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.sci.json b/data_descriptors/variables/apmon.sci.json
index 38f2411d5..1f38c4d48 100644
--- a/data_descriptors/variables/apmon.sci.json
+++ b/data_descriptors/variables/apmon.sci.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.sci.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.sconcdust.json b/data_descriptors/variables/apmon.sconcdust.json
index 172085527..52711c6fa 100644
--- a/data_descriptors/variables/apmon.sconcdust.json
+++ b/data_descriptors/variables/apmon.sconcdust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.sconcdust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.sconcso4.json b/data_descriptors/variables/apmon.sconcso4.json
index 6d71a421d..d9f8f1cc9 100644
--- a/data_descriptors/variables/apmon.sconcso4.json
+++ b/data_descriptors/variables/apmon.sconcso4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.sconcso4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.sconcss.json b/data_descriptors/variables/apmon.sconcss.json
index ebb99a0c5..84bf78c10 100644
--- a/data_descriptors/variables/apmon.sconcss.json
+++ b/data_descriptors/variables/apmon.sconcss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.sconcss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.sfcwind.json b/data_descriptors/variables/apmon.sfcwind.json
index dce5236e7..467eb5de2 100644
--- a/data_descriptors/variables/apmon.sfcwind.json
+++ b/data_descriptors/variables/apmon.sfcwind.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.sfcwind.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.sfcwindmax.json b/data_descriptors/variables/apmon.sfcwindmax.json
index c800ab822..6c88ca184 100644
--- a/data_descriptors/variables/apmon.sfcwindmax.json
+++ b/data_descriptors/variables/apmon.sfcwindmax.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.sfcwindmax.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.snowmxrat27.json b/data_descriptors/variables/apmon.snowmxrat27.json
index 15c773121..d356000bc 100644
--- a/data_descriptors/variables/apmon.snowmxrat27.json
+++ b/data_descriptors/variables/apmon.snowmxrat27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.snowmxrat27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.swsrfasdust.json b/data_descriptors/variables/apmon.swsrfasdust.json
index 549018845..f44caff6f 100644
--- a/data_descriptors/variables/apmon.swsrfasdust.json
+++ b/data_descriptors/variables/apmon.swsrfasdust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.swsrfasdust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.swsrfcsdust.json b/data_descriptors/variables/apmon.swsrfcsdust.json
index 9e7e7aa4e..ae47594b3 100644
--- a/data_descriptors/variables/apmon.swsrfcsdust.json
+++ b/data_descriptors/variables/apmon.swsrfcsdust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.swsrfcsdust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.swtoaasdust.json b/data_descriptors/variables/apmon.swtoaasdust.json
index d196539f3..3c533ff4b 100644
--- a/data_descriptors/variables/apmon.swtoaasdust.json
+++ b/data_descriptors/variables/apmon.swtoaasdust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.swtoaasdust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.swtoacsdust.json b/data_descriptors/variables/apmon.swtoacsdust.json
index dbfd5bd04..3b1c422c0 100644
--- a/data_descriptors/variables/apmon.swtoacsdust.json
+++ b/data_descriptors/variables/apmon.swtoacsdust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.swtoacsdust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.ta.json b/data_descriptors/variables/apmon.ta.json
index d83b605a9..9549e9b50 100644
--- a/data_descriptors/variables/apmon.ta.json
+++ b/data_descriptors/variables/apmon.ta.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.ta.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.ta27.json b/data_descriptors/variables/apmon.ta27.json
index adfdcf285..11db5ac9b 100644
--- a/data_descriptors/variables/apmon.ta27.json
+++ b/data_descriptors/variables/apmon.ta27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.ta27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.tas.json b/data_descriptors/variables/apmon.tas.json
index 205ee49a7..26cf4a11e 100644
--- a/data_descriptors/variables/apmon.tas.json
+++ b/data_descriptors/variables/apmon.tas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.tas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.tasmax.json b/data_descriptors/variables/apmon.tasmax.json
index 83137e823..c67543599 100644
--- a/data_descriptors/variables/apmon.tasmax.json
+++ b/data_descriptors/variables/apmon.tasmax.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.tasmax.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.tasmaxcrop.json b/data_descriptors/variables/apmon.tasmaxcrop.json
index 7f94297e2..c70a498b4 100644
--- a/data_descriptors/variables/apmon.tasmaxcrop.json
+++ b/data_descriptors/variables/apmon.tasmaxcrop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.tasmaxcrop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.tasmin.json b/data_descriptors/variables/apmon.tasmin.json
index 471835572..0fb9070a2 100644
--- a/data_descriptors/variables/apmon.tasmin.json
+++ b/data_descriptors/variables/apmon.tasmin.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.tasmin.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.tasmincrop.json b/data_descriptors/variables/apmon.tasmincrop.json
index 2ddd54d1d..7803e09ef 100644
--- a/data_descriptors/variables/apmon.tasmincrop.json
+++ b/data_descriptors/variables/apmon.tasmincrop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.tasmincrop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.tauu.json b/data_descriptors/variables/apmon.tauu.json
index 9f90b53c6..5dd7f1814 100644
--- a/data_descriptors/variables/apmon.tauu.json
+++ b/data_descriptors/variables/apmon.tauu.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.tauu.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.tauv.json b/data_descriptors/variables/apmon.tauv.json
index ced536e10..5d8a2156f 100644
--- a/data_descriptors/variables/apmon.tauv.json
+++ b/data_descriptors/variables/apmon.tauv.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.tauv.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.tdps.json b/data_descriptors/variables/apmon.tdps.json
index 29d9754ec..e78c58877 100644
--- a/data_descriptors/variables/apmon.tdps.json
+++ b/data_descriptors/variables/apmon.tdps.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.tdps.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.tntmp27.json b/data_descriptors/variables/apmon.tntmp27.json
index 9d8c95d72..e62971097 100644
--- a/data_descriptors/variables/apmon.tntmp27.json
+++ b/data_descriptors/variables/apmon.tntmp27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.tntmp27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.ts.json b/data_descriptors/variables/apmon.ts.json
index 982aef659..20d30e69c 100644
--- a/data_descriptors/variables/apmon.ts.json
+++ b/data_descriptors/variables/apmon.ts.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.ts.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.ua19.json b/data_descriptors/variables/apmon.ua19.json
index add50df6e..e39f4e54b 100644
--- a/data_descriptors/variables/apmon.ua19.json
+++ b/data_descriptors/variables/apmon.ua19.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.ua19.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.ua27.json b/data_descriptors/variables/apmon.ua27.json
index 245dd5995..158e3f7ac 100644
--- a/data_descriptors/variables/apmon.ua27.json
+++ b/data_descriptors/variables/apmon.ua27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.ua27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.ua7h.json b/data_descriptors/variables/apmon.ua7h.json
index 8812461ef..dd1746475 100644
--- a/data_descriptors/variables/apmon.ua7h.json
+++ b/data_descriptors/variables/apmon.ua7h.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.ua7h.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.uas.json b/data_descriptors/variables/apmon.uas.json
index ad655d79c..51818b26a 100644
--- a/data_descriptors/variables/apmon.uas.json
+++ b/data_descriptors/variables/apmon.uas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.uas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.uqint.json b/data_descriptors/variables/apmon.uqint.json
index 9e4e4033c..2c1ed2e55 100644
--- a/data_descriptors/variables/apmon.uqint.json
+++ b/data_descriptors/variables/apmon.uqint.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.uqint.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.utendnogw.json b/data_descriptors/variables/apmon.utendnogw.json
index 15382a251..6887e8635 100644
--- a/data_descriptors/variables/apmon.utendnogw.json
+++ b/data_descriptors/variables/apmon.utendnogw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.utendnogw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.utendogw.json b/data_descriptors/variables/apmon.utendogw.json
index c694b474b..c1d15e425 100644
--- a/data_descriptors/variables/apmon.utendogw.json
+++ b/data_descriptors/variables/apmon.utendogw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.utendogw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.va19.json b/data_descriptors/variables/apmon.va19.json
index bf848a936..7bc2acc09 100644
--- a/data_descriptors/variables/apmon.va19.json
+++ b/data_descriptors/variables/apmon.va19.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.va19.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.va27.json b/data_descriptors/variables/apmon.va27.json
index d7caf24fe..9899b715a 100644
--- a/data_descriptors/variables/apmon.va27.json
+++ b/data_descriptors/variables/apmon.va27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.va27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.va7h.json b/data_descriptors/variables/apmon.va7h.json
index 6273196b2..7f7416a10 100644
--- a/data_descriptors/variables/apmon.va7h.json
+++ b/data_descriptors/variables/apmon.va7h.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.va7h.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.vas.json b/data_descriptors/variables/apmon.vas.json
index 1d3e34004..980d0ea70 100644
--- a/data_descriptors/variables/apmon.vas.json
+++ b/data_descriptors/variables/apmon.vas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.vas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.vqint.json b/data_descriptors/variables/apmon.vqint.json
index ed5fff198..dcc259f95 100644
--- a/data_descriptors/variables/apmon.vqint.json
+++ b/data_descriptors/variables/apmon.vqint.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.vqint.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.vtendnogw.json b/data_descriptors/variables/apmon.vtendnogw.json
index f5d296ef6..5919b4411 100644
--- a/data_descriptors/variables/apmon.vtendnogw.json
+++ b/data_descriptors/variables/apmon.vtendnogw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.vtendnogw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.vtendogw.json b/data_descriptors/variables/apmon.vtendogw.json
index 64025c644..75cf475f0 100644
--- a/data_descriptors/variables/apmon.vtendogw.json
+++ b/data_descriptors/variables/apmon.vtendogw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.vtendogw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.wap.json b/data_descriptors/variables/apmon.wap.json
index b2f82a312..19af23835 100644
--- a/data_descriptors/variables/apmon.wap.json
+++ b/data_descriptors/variables/apmon.wap.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.wap.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.zg.json b/data_descriptors/variables/apmon.zg.json
index 6134d9ee4..e21f40d2a 100644
--- a/data_descriptors/variables/apmon.zg.json
+++ b/data_descriptors/variables/apmon.zg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.zg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmon.zg27.json b/data_descriptors/variables/apmon.zg27.json
index 46863be35..0db738c32 100644
--- a/data_descriptors/variables/apmon.zg27.json
+++ b/data_descriptors/variables/apmon.zg27.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmon.zg27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonclim.ch4clim.json b/data_descriptors/variables/apmonclim.ch4clim.json
index 1f2836614..af84df871 100644
--- a/data_descriptors/variables/apmonclim.ch4clim.json
+++ b/data_descriptors/variables/apmonclim.ch4clim.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonclim.ch4clim.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonclim.ch4globalclim.json b/data_descriptors/variables/apmonclim.ch4globalclim.json
index dd1a81315..96700534f 100644
--- a/data_descriptors/variables/apmonclim.ch4globalclim.json
+++ b/data_descriptors/variables/apmonclim.ch4globalclim.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonclim.ch4globalclim.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonclim.co2clim.json b/data_descriptors/variables/apmonclim.co2clim.json
index be29c4d18..733c8f311 100644
--- a/data_descriptors/variables/apmonclim.co2clim.json
+++ b/data_descriptors/variables/apmonclim.co2clim.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonclim.co2clim.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonclim.co2massclim.json b/data_descriptors/variables/apmonclim.co2massclim.json
index 8dae53ae9..4a5811242 100644
--- a/data_descriptors/variables/apmonclim.co2massclim.json
+++ b/data_descriptors/variables/apmonclim.co2massclim.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonclim.co2massclim.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonclim.n2oclim.json b/data_descriptors/variables/apmonclim.n2oclim.json
index 510b50d58..c651ccee0 100644
--- a/data_descriptors/variables/apmonclim.n2oclim.json
+++ b/data_descriptors/variables/apmonclim.n2oclim.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonclim.n2oclim.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonclim.n2oglobalclim.json b/data_descriptors/variables/apmonclim.n2oglobalclim.json
index 6e22c30c7..44ed4f453 100644
--- a/data_descriptors/variables/apmonclim.n2oglobalclim.json
+++ b/data_descriptors/variables/apmonclim.n2oglobalclim.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonclim.n2oglobalclim.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonclim.o3clim.json b/data_descriptors/variables/apmonclim.o3clim.json
index 7753971aa..6f2de9e4d 100644
--- a/data_descriptors/variables/apmonclim.o3clim.json
+++ b/data_descriptors/variables/apmonclim.o3clim.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonclim.o3clim.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonclimlev.pfull.json b/data_descriptors/variables/apmonclimlev.pfull.json
index 52b47a1fd..433fc7375 100644
--- a/data_descriptors/variables/apmonclimlev.pfull.json
+++ b/data_descriptors/variables/apmonclimlev.pfull.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonclimlev.pfull.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonclimlev.phalf.json b/data_descriptors/variables/apmonclimlev.phalf.json
index eb34de12c..7703233c3 100644
--- a/data_descriptors/variables/apmonclimlev.phalf.json
+++ b/data_descriptors/variables/apmonclimlev.phalf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonclimlev.phalf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmondiurnal.rlut.json b/data_descriptors/variables/apmondiurnal.rlut.json
index 32884ec81..5142f58f1 100644
--- a/data_descriptors/variables/apmondiurnal.rlut.json
+++ b/data_descriptors/variables/apmondiurnal.rlut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmondiurnal.rlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmondiurnal.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmondiurnal.rlutcs.json b/data_descriptors/variables/apmondiurnal.rlutcs.json
index da0b3b781..ee9dde0fd 100644
--- a/data_descriptors/variables/apmondiurnal.rlutcs.json
+++ b/data_descriptors/variables/apmondiurnal.rlutcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmondiurnal.rlutcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmondiurnal.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmondiurnal.rsdt.json b/data_descriptors/variables/apmondiurnal.rsdt.json
index 8fadaa394..7ad68a18d 100644
--- a/data_descriptors/variables/apmondiurnal.rsdt.json
+++ b/data_descriptors/variables/apmondiurnal.rsdt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmondiurnal.rsdt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmondiurnal.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmondiurnal.rsut.json b/data_descriptors/variables/apmondiurnal.rsut.json
index 7199a1006..a3686ac3b 100644
--- a/data_descriptors/variables/apmondiurnal.rsut.json
+++ b/data_descriptors/variables/apmondiurnal.rsut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmondiurnal.rsut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmondiurnal.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmondiurnal.rsutcs.json b/data_descriptors/variables/apmondiurnal.rsutcs.json
index bc3a09aa0..bc03ef4a6 100644
--- a/data_descriptors/variables/apmondiurnal.rsutcs.json
+++ b/data_descriptors/variables/apmondiurnal.rsutcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmondiurnal.rsutcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmondiurnal.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.cl.json b/data_descriptors/variables/apmonlev.cl.json
index 078a3d02a..421b30e64 100644
--- a/data_descriptors/variables/apmonlev.cl.json
+++ b/data_descriptors/variables/apmonlev.cl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.cl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.clc.json b/data_descriptors/variables/apmonlev.clc.json
index 562fb3351..d4b9d3407 100644
--- a/data_descriptors/variables/apmonlev.clc.json
+++ b/data_descriptors/variables/apmonlev.clc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.clc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.cli.json b/data_descriptors/variables/apmonlev.cli.json
index 129ce728c..844b382b2 100644
--- a/data_descriptors/variables/apmonlev.cli.json
+++ b/data_descriptors/variables/apmonlev.cli.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.cli.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.clic.json b/data_descriptors/variables/apmonlev.clic.json
index eeb87c3f0..9ba741220 100644
--- a/data_descriptors/variables/apmonlev.clic.json
+++ b/data_descriptors/variables/apmonlev.clic.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.clic.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.clis.json b/data_descriptors/variables/apmonlev.clis.json
index c28cc27e4..25b6c7230 100644
--- a/data_descriptors/variables/apmonlev.clis.json
+++ b/data_descriptors/variables/apmonlev.clis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.clis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.cls.json b/data_descriptors/variables/apmonlev.cls.json
index b7108bf9a..f8403fb52 100644
--- a/data_descriptors/variables/apmonlev.cls.json
+++ b/data_descriptors/variables/apmonlev.cls.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.cls.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.clw.json b/data_descriptors/variables/apmonlev.clw.json
index a6e116cce..82d118146 100644
--- a/data_descriptors/variables/apmonlev.clw.json
+++ b/data_descriptors/variables/apmonlev.clw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.clw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.clwc.json b/data_descriptors/variables/apmonlev.clwc.json
index 76685dde5..afc6c03b5 100644
--- a/data_descriptors/variables/apmonlev.clwc.json
+++ b/data_descriptors/variables/apmonlev.clwc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.clwc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.clws.json b/data_descriptors/variables/apmonlev.clws.json
index e8af51a34..8ceca1247 100644
--- a/data_descriptors/variables/apmonlev.clws.json
+++ b/data_descriptors/variables/apmonlev.clws.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.clws.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.co23d.json b/data_descriptors/variables/apmonlev.co23d.json
index 4d94105e6..87742896a 100644
--- a/data_descriptors/variables/apmonlev.co23d.json
+++ b/data_descriptors/variables/apmonlev.co23d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.co23d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.conccmcn.json b/data_descriptors/variables/apmonlev.conccmcn.json
index 938412bea..8182f3dbc 100644
--- a/data_descriptors/variables/apmonlev.conccmcn.json
+++ b/data_descriptors/variables/apmonlev.conccmcn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.conccmcn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.conccn.json b/data_descriptors/variables/apmonlev.conccn.json
index 9070e9630..879919b20 100644
--- a/data_descriptors/variables/apmonlev.conccn.json
+++ b/data_descriptors/variables/apmonlev.conccn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.conccn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.concdust.json b/data_descriptors/variables/apmonlev.concdust.json
index ed5356417..3e1599fa3 100644
--- a/data_descriptors/variables/apmonlev.concdust.json
+++ b/data_descriptors/variables/apmonlev.concdust.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.concdust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.concnmcn.json b/data_descriptors/variables/apmonlev.concnmcn.json
index 68b4b3ef6..5abd8a6ca 100644
--- a/data_descriptors/variables/apmonlev.concnmcn.json
+++ b/data_descriptors/variables/apmonlev.concnmcn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.concnmcn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.dmc.json b/data_descriptors/variables/apmonlev.dmc.json
index 4e364d4c5..e492eb15a 100644
--- a/data_descriptors/variables/apmonlev.dmc.json
+++ b/data_descriptors/variables/apmonlev.dmc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.dmc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.edt.json b/data_descriptors/variables/apmonlev.edt.json
index 40ebe4259..73c40065e 100644
--- a/data_descriptors/variables/apmonlev.edt.json
+++ b/data_descriptors/variables/apmonlev.edt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.edt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.evu.json b/data_descriptors/variables/apmonlev.evu.json
index a4b985797..bc43dbd5e 100644
--- a/data_descriptors/variables/apmonlev.evu.json
+++ b/data_descriptors/variables/apmonlev.evu.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.evu.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.hur.json b/data_descriptors/variables/apmonlev.hur.json
index 4a1fe8eca..7c7101d4f 100644
--- a/data_descriptors/variables/apmonlev.hur.json
+++ b/data_descriptors/variables/apmonlev.hur.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.hur.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.hus.json b/data_descriptors/variables/apmonlev.hus.json
index 00bf3c6dc..fb517d743 100644
--- a/data_descriptors/variables/apmonlev.hus.json
+++ b/data_descriptors/variables/apmonlev.hus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.hus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.mc.json b/data_descriptors/variables/apmonlev.mc.json
index 94dd94561..c1c2af620 100644
--- a/data_descriptors/variables/apmonlev.mc.json
+++ b/data_descriptors/variables/apmonlev.mc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.mc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.mcd.json b/data_descriptors/variables/apmonlev.mcd.json
index 383f5ba67..24d64474e 100644
--- a/data_descriptors/variables/apmonlev.mcd.json
+++ b/data_descriptors/variables/apmonlev.mcd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.mcd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.mcu.json b/data_descriptors/variables/apmonlev.mcu.json
index 245132183..a0adfcd83 100644
--- a/data_descriptors/variables/apmonlev.mcu.json
+++ b/data_descriptors/variables/apmonlev.mcu.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.mcu.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.md.json b/data_descriptors/variables/apmonlev.md.json
index 5b7386d37..67fd1b3db 100644
--- a/data_descriptors/variables/apmonlev.md.json
+++ b/data_descriptors/variables/apmonlev.md.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.md.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.prw17o.json b/data_descriptors/variables/apmonlev.prw17o.json
index 2f2d9b5f5..6c879675a 100644
--- a/data_descriptors/variables/apmonlev.prw17o.json
+++ b/data_descriptors/variables/apmonlev.prw17o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.prw17o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.prw2h.json b/data_descriptors/variables/apmonlev.prw2h.json
index 340c6dff4..43ff59a10 100644
--- a/data_descriptors/variables/apmonlev.prw2h.json
+++ b/data_descriptors/variables/apmonlev.prw2h.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.prw2h.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.reffclic.json b/data_descriptors/variables/apmonlev.reffclic.json
index 53829cc4c..8f5631439 100644
--- a/data_descriptors/variables/apmonlev.reffclic.json
+++ b/data_descriptors/variables/apmonlev.reffclic.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.reffclic.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.reffclis.json b/data_descriptors/variables/apmonlev.reffclis.json
index b0b295176..38509992d 100644
--- a/data_descriptors/variables/apmonlev.reffclis.json
+++ b/data_descriptors/variables/apmonlev.reffclis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.reffclis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.reffclwc.json b/data_descriptors/variables/apmonlev.reffclwc.json
index 7ad2f06b4..203bb86d6 100644
--- a/data_descriptors/variables/apmonlev.reffclwc.json
+++ b/data_descriptors/variables/apmonlev.reffclwc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.reffclwc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.reffclws.json b/data_descriptors/variables/apmonlev.reffclws.json
index e214f9dd1..1d3d0b613 100644
--- a/data_descriptors/variables/apmonlev.reffclws.json
+++ b/data_descriptors/variables/apmonlev.reffclws.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.reffclws.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rld.json b/data_descriptors/variables/apmonlev.rld.json
index 0bec62f45..31d68d1ac 100644
--- a/data_descriptors/variables/apmonlev.rld.json
+++ b/data_descriptors/variables/apmonlev.rld.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rld.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rld4co2.json b/data_descriptors/variables/apmonlev.rld4co2.json
index 4fe2a0652..fbebeb64b 100644
--- a/data_descriptors/variables/apmonlev.rld4co2.json
+++ b/data_descriptors/variables/apmonlev.rld4co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rld4co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rldcs.json b/data_descriptors/variables/apmonlev.rldcs.json
index 7e6e4703a..0b8833e10 100644
--- a/data_descriptors/variables/apmonlev.rldcs.json
+++ b/data_descriptors/variables/apmonlev.rldcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rldcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rldcs4co2.json b/data_descriptors/variables/apmonlev.rldcs4co2.json
index 2fb13bd7b..7ffc8e3ac 100644
--- a/data_descriptors/variables/apmonlev.rldcs4co2.json
+++ b/data_descriptors/variables/apmonlev.rldcs4co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rldcs4co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rlu.json b/data_descriptors/variables/apmonlev.rlu.json
index af57d022d..0a70a0d59 100644
--- a/data_descriptors/variables/apmonlev.rlu.json
+++ b/data_descriptors/variables/apmonlev.rlu.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rlu.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rlu4co2.json b/data_descriptors/variables/apmonlev.rlu4co2.json
index c23805e03..82e26858d 100644
--- a/data_descriptors/variables/apmonlev.rlu4co2.json
+++ b/data_descriptors/variables/apmonlev.rlu4co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rlu4co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rlucs.json b/data_descriptors/variables/apmonlev.rlucs.json
index 40d504f0d..763b98208 100644
--- a/data_descriptors/variables/apmonlev.rlucs.json
+++ b/data_descriptors/variables/apmonlev.rlucs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rlucs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rlucs4co2.json b/data_descriptors/variables/apmonlev.rlucs4co2.json
index 03a3dcac5..3bdf46445 100644
--- a/data_descriptors/variables/apmonlev.rlucs4co2.json
+++ b/data_descriptors/variables/apmonlev.rlucs4co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rlucs4co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rsd.json b/data_descriptors/variables/apmonlev.rsd.json
index 49e98baf5..69f276136 100644
--- a/data_descriptors/variables/apmonlev.rsd.json
+++ b/data_descriptors/variables/apmonlev.rsd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rsd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rsd4co2.json b/data_descriptors/variables/apmonlev.rsd4co2.json
index e79c3d3cd..587712a48 100644
--- a/data_descriptors/variables/apmonlev.rsd4co2.json
+++ b/data_descriptors/variables/apmonlev.rsd4co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rsd4co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rsdcs.json b/data_descriptors/variables/apmonlev.rsdcs.json
index 6875667e4..cbcf0667a 100644
--- a/data_descriptors/variables/apmonlev.rsdcs.json
+++ b/data_descriptors/variables/apmonlev.rsdcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rsdcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rsdcs4co2.json b/data_descriptors/variables/apmonlev.rsdcs4co2.json
index e76617b1b..c660c338e 100644
--- a/data_descriptors/variables/apmonlev.rsdcs4co2.json
+++ b/data_descriptors/variables/apmonlev.rsdcs4co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rsdcs4co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rsu.json b/data_descriptors/variables/apmonlev.rsu.json
index 94f8eb292..d9c230bd1 100644
--- a/data_descriptors/variables/apmonlev.rsu.json
+++ b/data_descriptors/variables/apmonlev.rsu.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rsu.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rsu4co2.json b/data_descriptors/variables/apmonlev.rsu4co2.json
index 273b78f2e..dec03a4e6 100644
--- a/data_descriptors/variables/apmonlev.rsu4co2.json
+++ b/data_descriptors/variables/apmonlev.rsu4co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rsu4co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rsucs.json b/data_descriptors/variables/apmonlev.rsucs.json
index a9cc6e27a..18c6f0cb0 100644
--- a/data_descriptors/variables/apmonlev.rsucs.json
+++ b/data_descriptors/variables/apmonlev.rsucs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rsucs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.rsucs4co2.json b/data_descriptors/variables/apmonlev.rsucs4co2.json
index 8215888f3..63aac8066 100644
--- a/data_descriptors/variables/apmonlev.rsucs4co2.json
+++ b/data_descriptors/variables/apmonlev.rsucs4co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.rsucs4co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.smc.json b/data_descriptors/variables/apmonlev.smc.json
index aa20e7406..cb50713a3 100644
--- a/data_descriptors/variables/apmonlev.smc.json
+++ b/data_descriptors/variables/apmonlev.smc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.smc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.t2.json b/data_descriptors/variables/apmonlev.t2.json
index dba96a5ac..9cbc88121 100644
--- a/data_descriptors/variables/apmonlev.t2.json
+++ b/data_descriptors/variables/apmonlev.t2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.t2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.ta.json b/data_descriptors/variables/apmonlev.ta.json
index 958afbfbc..9abf6e961 100644
--- a/data_descriptors/variables/apmonlev.ta.json
+++ b/data_descriptors/variables/apmonlev.ta.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.ta.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tnhus.json b/data_descriptors/variables/apmonlev.tnhus.json
index f0f8af4ad..ca54fe58d 100644
--- a/data_descriptors/variables/apmonlev.tnhus.json
+++ b/data_descriptors/variables/apmonlev.tnhus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tnhus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tnhusa.json b/data_descriptors/variables/apmonlev.tnhusa.json
index b9c1efc12..5fdd41219 100644
--- a/data_descriptors/variables/apmonlev.tnhusa.json
+++ b/data_descriptors/variables/apmonlev.tnhusa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tnhusa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tnhusc.json b/data_descriptors/variables/apmonlev.tnhusc.json
index 45114858f..4f3a10d2b 100644
--- a/data_descriptors/variables/apmonlev.tnhusc.json
+++ b/data_descriptors/variables/apmonlev.tnhusc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tnhusc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tnhusd.json b/data_descriptors/variables/apmonlev.tnhusd.json
index 3dba6842d..6384083a5 100644
--- a/data_descriptors/variables/apmonlev.tnhusd.json
+++ b/data_descriptors/variables/apmonlev.tnhusd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tnhusd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tnhusmp.json b/data_descriptors/variables/apmonlev.tnhusmp.json
index e41d28d1a..35cd69398 100644
--- a/data_descriptors/variables/apmonlev.tnhusmp.json
+++ b/data_descriptors/variables/apmonlev.tnhusmp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tnhusmp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tnhuspbl.json b/data_descriptors/variables/apmonlev.tnhuspbl.json
index df890cfd0..170f40ac9 100644
--- a/data_descriptors/variables/apmonlev.tnhuspbl.json
+++ b/data_descriptors/variables/apmonlev.tnhuspbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tnhuspbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tnhusscp.json b/data_descriptors/variables/apmonlev.tnhusscp.json
index f9f3bf606..553901bd0 100644
--- a/data_descriptors/variables/apmonlev.tnhusscp.json
+++ b/data_descriptors/variables/apmonlev.tnhusscp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tnhusscp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tnhusscpbl.json b/data_descriptors/variables/apmonlev.tnhusscpbl.json
index 2f9ba2c75..619108314 100644
--- a/data_descriptors/variables/apmonlev.tnhusscpbl.json
+++ b/data_descriptors/variables/apmonlev.tnhusscpbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tnhusscpbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tnt.json b/data_descriptors/variables/apmonlev.tnt.json
index 9eb50f3d1..f1e014074 100644
--- a/data_descriptors/variables/apmonlev.tnt.json
+++ b/data_descriptors/variables/apmonlev.tnt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tnt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tnta.json b/data_descriptors/variables/apmonlev.tnta.json
index 05fa7ab1e..687c04ef6 100644
--- a/data_descriptors/variables/apmonlev.tnta.json
+++ b/data_descriptors/variables/apmonlev.tnta.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tnta.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tntc.json b/data_descriptors/variables/apmonlev.tntc.json
index 83f336b34..84035d1fb 100644
--- a/data_descriptors/variables/apmonlev.tntc.json
+++ b/data_descriptors/variables/apmonlev.tntc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tntc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tntd.json b/data_descriptors/variables/apmonlev.tntd.json
index 9ba645baa..b48b4816f 100644
--- a/data_descriptors/variables/apmonlev.tntd.json
+++ b/data_descriptors/variables/apmonlev.tntd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tntd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tntmp.json b/data_descriptors/variables/apmonlev.tntmp.json
index 3c6208f03..e1e5f7bbe 100644
--- a/data_descriptors/variables/apmonlev.tntmp.json
+++ b/data_descriptors/variables/apmonlev.tntmp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tntmp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tntpbl.json b/data_descriptors/variables/apmonlev.tntpbl.json
index 31122c47d..6cda921cb 100644
--- a/data_descriptors/variables/apmonlev.tntpbl.json
+++ b/data_descriptors/variables/apmonlev.tntpbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tntpbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tntr.json b/data_descriptors/variables/apmonlev.tntr.json
index e35c6b740..dd6ce462b 100644
--- a/data_descriptors/variables/apmonlev.tntr.json
+++ b/data_descriptors/variables/apmonlev.tntr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tntr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tntrlcs.json b/data_descriptors/variables/apmonlev.tntrlcs.json
index aa92ef5c9..791e4abed 100644
--- a/data_descriptors/variables/apmonlev.tntrlcs.json
+++ b/data_descriptors/variables/apmonlev.tntrlcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tntrlcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tntrscs.json b/data_descriptors/variables/apmonlev.tntrscs.json
index 796825650..fbf4b2a11 100644
--- a/data_descriptors/variables/apmonlev.tntrscs.json
+++ b/data_descriptors/variables/apmonlev.tntrscs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tntrscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tntscp.json b/data_descriptors/variables/apmonlev.tntscp.json
index 865451ecb..879af79af 100644
--- a/data_descriptors/variables/apmonlev.tntscp.json
+++ b/data_descriptors/variables/apmonlev.tntscp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tntscp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.tntscpbl.json b/data_descriptors/variables/apmonlev.tntscpbl.json
index 949f2cadc..05bdec67c 100644
--- a/data_descriptors/variables/apmonlev.tntscpbl.json
+++ b/data_descriptors/variables/apmonlev.tntscpbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.tntscpbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.twap.json b/data_descriptors/variables/apmonlev.twap.json
index 598c62c72..7a09176b8 100644
--- a/data_descriptors/variables/apmonlev.twap.json
+++ b/data_descriptors/variables/apmonlev.twap.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.twap.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.u2.json b/data_descriptors/variables/apmonlev.u2.json
index 2044408ae..2f6a20cb4 100644
--- a/data_descriptors/variables/apmonlev.u2.json
+++ b/data_descriptors/variables/apmonlev.u2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.u2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.ut.json b/data_descriptors/variables/apmonlev.ut.json
index cf710e7d9..f1f247310 100644
--- a/data_descriptors/variables/apmonlev.ut.json
+++ b/data_descriptors/variables/apmonlev.ut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.ut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.uv.json b/data_descriptors/variables/apmonlev.uv.json
index 3845a45b8..923387690 100644
--- a/data_descriptors/variables/apmonlev.uv.json
+++ b/data_descriptors/variables/apmonlev.uv.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.uv.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.uwap.json b/data_descriptors/variables/apmonlev.uwap.json
index 9a1633b80..09255eb38 100644
--- a/data_descriptors/variables/apmonlev.uwap.json
+++ b/data_descriptors/variables/apmonlev.uwap.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.uwap.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.v2.json b/data_descriptors/variables/apmonlev.v2.json
index 6a1e26923..4056d916c 100644
--- a/data_descriptors/variables/apmonlev.v2.json
+++ b/data_descriptors/variables/apmonlev.v2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.v2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.vt.json b/data_descriptors/variables/apmonlev.vt.json
index 6c65ee687..27d5d3235 100644
--- a/data_descriptors/variables/apmonlev.vt.json
+++ b/data_descriptors/variables/apmonlev.vt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.vt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.vwap.json b/data_descriptors/variables/apmonlev.vwap.json
index fa7647ed2..fec5a3607 100644
--- a/data_descriptors/variables/apmonlev.vwap.json
+++ b/data_descriptors/variables/apmonlev.vwap.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.vwap.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.wap.json b/data_descriptors/variables/apmonlev.wap.json
index d27f39a0f..6f21c65e9 100644
--- a/data_descriptors/variables/apmonlev.wap.json
+++ b/data_descriptors/variables/apmonlev.wap.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.wap.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.wap2.json b/data_descriptors/variables/apmonlev.wap2.json
index b5e4d7783..fe0a438df 100644
--- a/data_descriptors/variables/apmonlev.wap2.json
+++ b/data_descriptors/variables/apmonlev.wap2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.wap2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.xgwdparam.json b/data_descriptors/variables/apmonlev.xgwdparam.json
index a2b1cd1ef..dd86adbee 100644
--- a/data_descriptors/variables/apmonlev.xgwdparam.json
+++ b/data_descriptors/variables/apmonlev.xgwdparam.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.xgwdparam.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.ygwdparam.json b/data_descriptors/variables/apmonlev.ygwdparam.json
index bf0941966..6e4282644 100644
--- a/data_descriptors/variables/apmonlev.ygwdparam.json
+++ b/data_descriptors/variables/apmonlev.ygwdparam.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.ygwdparam.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonlev.zg.json b/data_descriptors/variables/apmonlev.zg.json
index 7550cee37..6ba4e7e5e 100644
--- a/data_descriptors/variables/apmonlev.zg.json
+++ b/data_descriptors/variables/apmonlev.zg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonlev.zg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.epfy.json b/data_descriptors/variables/apmonz.epfy.json
index c1a3a5434..99e1d2906 100644
--- a/data_descriptors/variables/apmonz.epfy.json
+++ b/data_descriptors/variables/apmonz.epfy.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.epfy.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.epfz.json b/data_descriptors/variables/apmonz.epfz.json
index f075e43f8..89196e391 100644
--- a/data_descriptors/variables/apmonz.epfz.json
+++ b/data_descriptors/variables/apmonz.epfz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.epfz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.jo2.json b/data_descriptors/variables/apmonz.jo2.json
index c83db0ffc..6332577d5 100644
--- a/data_descriptors/variables/apmonz.jo2.json
+++ b/data_descriptors/variables/apmonz.jo2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.jo2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.jo3.json b/data_descriptors/variables/apmonz.jo3.json
index 42308c5ce..15ecc7625 100644
--- a/data_descriptors/variables/apmonz.jo3.json
+++ b/data_descriptors/variables/apmonz.jo3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.jo3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.tntc.json b/data_descriptors/variables/apmonz.tntc.json
index 5c160f68a..db4657108 100644
--- a/data_descriptors/variables/apmonz.tntc.json
+++ b/data_descriptors/variables/apmonz.tntc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.tntc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.tntmp.json b/data_descriptors/variables/apmonz.tntmp.json
index e36ed75b8..d8fa670ed 100644
--- a/data_descriptors/variables/apmonz.tntmp.json
+++ b/data_descriptors/variables/apmonz.tntmp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.tntmp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "apmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.tntnogw.json b/data_descriptors/variables/apmonz.tntnogw.json
index fbf6afbe2..5dd5ebb95 100644
--- a/data_descriptors/variables/apmonz.tntnogw.json
+++ b/data_descriptors/variables/apmonz.tntnogw.json
@@ -2,7 +2,7 @@
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   "id": "apmonz.tntnogw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.tntogw.json b/data_descriptors/variables/apmonz.tntogw.json
index 621c3cc0b..bd83069f7 100644
--- a/data_descriptors/variables/apmonz.tntogw.json
+++ b/data_descriptors/variables/apmonz.tntogw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.tntogw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "apmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.tntrlcs.json b/data_descriptors/variables/apmonz.tntrlcs.json
index 827553f27..cb8751c4c 100644
--- a/data_descriptors/variables/apmonz.tntrlcs.json
+++ b/data_descriptors/variables/apmonz.tntrlcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.tntrlcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.tntrscs.json b/data_descriptors/variables/apmonz.tntrscs.json
index ade886ea9..f4723cd26 100644
--- a/data_descriptors/variables/apmonz.tntrscs.json
+++ b/data_descriptors/variables/apmonz.tntrscs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.tntrscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.tntscp.json b/data_descriptors/variables/apmonz.tntscp.json
index be00114bb..058476f72 100644
--- a/data_descriptors/variables/apmonz.tntscp.json
+++ b/data_descriptors/variables/apmonz.tntscp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.tntscp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "apmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.utendepfd.json b/data_descriptors/variables/apmonz.utendepfd.json
index 529339383..72bff4613 100644
--- a/data_descriptors/variables/apmonz.utendepfd.json
+++ b/data_descriptors/variables/apmonz.utendepfd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.utendepfd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.utendnogw.json b/data_descriptors/variables/apmonz.utendnogw.json
index c80605526..e6ca0f630 100644
--- a/data_descriptors/variables/apmonz.utendnogw.json
+++ b/data_descriptors/variables/apmonz.utendnogw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.utendnogw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "apmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.vtem.json b/data_descriptors/variables/apmonz.vtem.json
index 85826b53d..d1ab1c7da 100644
--- a/data_descriptors/variables/apmonz.vtem.json
+++ b/data_descriptors/variables/apmonz.vtem.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.vtem.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "apmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.vtendnogw.json b/data_descriptors/variables/apmonz.vtendnogw.json
index a43818ef7..c6e9faa0d 100644
--- a/data_descriptors/variables/apmonz.vtendnogw.json
+++ b/data_descriptors/variables/apmonz.vtendnogw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.vtendnogw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.wtem.json b/data_descriptors/variables/apmonz.wtem.json
index 80fcf1956..0a85564f5 100644
--- a/data_descriptors/variables/apmonz.wtem.json
+++ b/data_descriptors/variables/apmonz.wtem.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.wtem.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.xgwdparam.json b/data_descriptors/variables/apmonz.xgwdparam.json
index 0b4cb1581..4e1d8b6fe 100644
--- a/data_descriptors/variables/apmonz.xgwdparam.json
+++ b/data_descriptors/variables/apmonz.xgwdparam.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.xgwdparam.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.ygwdparam.json b/data_descriptors/variables/apmonz.ygwdparam.json
index 5f081d773..677a3f464 100644
--- a/data_descriptors/variables/apmonz.ygwdparam.json
+++ b/data_descriptors/variables/apmonz.ygwdparam.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.ygwdparam.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.zg.json b/data_descriptors/variables/apmonz.zg.json
index de49400b3..601ec0bf3 100644
--- a/data_descriptors/variables/apmonz.zg.json
+++ b/data_descriptors/variables/apmonz.zg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.zg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apmonz.zmtnt.json b/data_descriptors/variables/apmonz.zmtnt.json
index 9b5aca78f..ded35371f 100644
--- a/data_descriptors/variables/apmonz.zmtnt.json
+++ b/data_descriptors/variables/apmonz.zmtnt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apmonz.zmtnt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrpt.hfls.json b/data_descriptors/variables/apsubhrpt.hfls.json
index b5b83c66f..585396472 100644
--- a/data_descriptors/variables/apsubhrpt.hfls.json
+++ b/data_descriptors/variables/apsubhrpt.hfls.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrpt.hfls.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrpt.hfss.json b/data_descriptors/variables/apsubhrpt.hfss.json
index 69f4a8e5f..56df9bfe3 100644
--- a/data_descriptors/variables/apsubhrpt.hfss.json
+++ b/data_descriptors/variables/apsubhrpt.hfss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrpt.hfss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrpt.huss.json b/data_descriptors/variables/apsubhrpt.huss.json
index 397269cf1..2def1594a 100644
--- a/data_descriptors/variables/apsubhrpt.huss.json
+++ b/data_descriptors/variables/apsubhrpt.huss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrpt.huss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrpt.pr.json b/data_descriptors/variables/apsubhrpt.pr.json
index d25c7471f..42a97e67a 100644
--- a/data_descriptors/variables/apsubhrpt.pr.json
+++ b/data_descriptors/variables/apsubhrpt.pr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrpt.pr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrpt.prc.json b/data_descriptors/variables/apsubhrpt.prc.json
index c8f7c225f..cc3cff171 100644
--- a/data_descriptors/variables/apsubhrpt.prc.json
+++ b/data_descriptors/variables/apsubhrpt.prc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrpt.prc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrpt.prw.json b/data_descriptors/variables/apsubhrpt.prw.json
index 833f8ca10..c004fc454 100644
--- a/data_descriptors/variables/apsubhrpt.prw.json
+++ b/data_descriptors/variables/apsubhrpt.prw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrpt.prw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrpt.ps.json b/data_descriptors/variables/apsubhrpt.ps.json
index dae1f684f..6c6441642 100644
--- a/data_descriptors/variables/apsubhrpt.ps.json
+++ b/data_descriptors/variables/apsubhrpt.ps.json
@@ -2,7 +2,7 @@
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   "id": "apsubhrpt.ps.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrpt.rlut.json b/data_descriptors/variables/apsubhrpt.rlut.json
index fccc30856..606b6a3ce 100644
--- a/data_descriptors/variables/apsubhrpt.rlut.json
+++ b/data_descriptors/variables/apsubhrpt.rlut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrpt.rlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrpt.rsdt.json b/data_descriptors/variables/apsubhrpt.rsdt.json
index 6c4cb9bc9..439b2583c 100644
--- a/data_descriptors/variables/apsubhrpt.rsdt.json
+++ b/data_descriptors/variables/apsubhrpt.rsdt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrpt.rsdt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrpt.rsut.json b/data_descriptors/variables/apsubhrpt.rsut.json
index b60c0e8d2..574ef34fc 100644
--- a/data_descriptors/variables/apsubhrpt.rsut.json
+++ b/data_descriptors/variables/apsubhrpt.rsut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrpt.rsut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrpt.tas.json b/data_descriptors/variables/apsubhrpt.tas.json
index 215db4bc7..5c35a148b 100644
--- a/data_descriptors/variables/apsubhrpt.tas.json
+++ b/data_descriptors/variables/apsubhrpt.tas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrpt.tas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptlev.hus.json b/data_descriptors/variables/apsubhrptlev.hus.json
index 5f8a99acd..f52560a4a 100644
--- a/data_descriptors/variables/apsubhrptlev.hus.json
+++ b/data_descriptors/variables/apsubhrptlev.hus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptlev.hus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptlev.mc.json b/data_descriptors/variables/apsubhrptlev.mc.json
index 4158a5ae0..92c21b2e4 100644
--- a/data_descriptors/variables/apsubhrptlev.mc.json
+++ b/data_descriptors/variables/apsubhrptlev.mc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptlev.mc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptlev.ta.json b/data_descriptors/variables/apsubhrptlev.ta.json
index 02042f1fe..b29cd7ba9 100644
--- a/data_descriptors/variables/apsubhrptlev.ta.json
+++ b/data_descriptors/variables/apsubhrptlev.ta.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptlev.ta.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptlev.tnhus.json b/data_descriptors/variables/apsubhrptlev.tnhus.json
index e89c12ef5..5449e26a8 100644
--- a/data_descriptors/variables/apsubhrptlev.tnhus.json
+++ b/data_descriptors/variables/apsubhrptlev.tnhus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptlev.tnhus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptlev.tnt.json b/data_descriptors/variables/apsubhrptlev.tnt.json
index 8175044b9..220248a1b 100644
--- a/data_descriptors/variables/apsubhrptlev.tnt.json
+++ b/data_descriptors/variables/apsubhrptlev.tnt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptlev.tnt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptlev.ua.json b/data_descriptors/variables/apsubhrptlev.ua.json
index 609313107..061384a31 100644
--- a/data_descriptors/variables/apsubhrptlev.ua.json
+++ b/data_descriptors/variables/apsubhrptlev.ua.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptlev.ua.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptlev.va.json b/data_descriptors/variables/apsubhrptlev.va.json
index a4183a9b0..468aa7e8c 100644
--- a/data_descriptors/variables/apsubhrptlev.va.json
+++ b/data_descriptors/variables/apsubhrptlev.va.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptlev.va.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptlev.wap.json b/data_descriptors/variables/apsubhrptlev.wap.json
index 037754d72..ef54c2524 100644
--- a/data_descriptors/variables/apsubhrptlev.wap.json
+++ b/data_descriptors/variables/apsubhrptlev.wap.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptlev.wap.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.ccb.json b/data_descriptors/variables/apsubhrptsite.ccb.json
index b31b14b73..af300dd10 100644
--- a/data_descriptors/variables/apsubhrptsite.ccb.json
+++ b/data_descriptors/variables/apsubhrptsite.ccb.json
@@ -2,7 +2,7 @@
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   "id": "apsubhrptsite.ccb.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.cct.json b/data_descriptors/variables/apsubhrptsite.cct.json
index fe009ab33..b25101f63 100644
--- a/data_descriptors/variables/apsubhrptsite.cct.json
+++ b/data_descriptors/variables/apsubhrptsite.cct.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.cct.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.ci.json b/data_descriptors/variables/apsubhrptsite.ci.json
index 45db07e12..8fd607b98 100644
--- a/data_descriptors/variables/apsubhrptsite.ci.json
+++ b/data_descriptors/variables/apsubhrptsite.ci.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.ci.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.cl.json b/data_descriptors/variables/apsubhrptsite.cl.json
index 899da65bc..1d7493419 100644
--- a/data_descriptors/variables/apsubhrptsite.cl.json
+++ b/data_descriptors/variables/apsubhrptsite.cl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.cl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.cli.json b/data_descriptors/variables/apsubhrptsite.cli.json
index f52c84f1a..176e5e919 100644
--- a/data_descriptors/variables/apsubhrptsite.cli.json
+++ b/data_descriptors/variables/apsubhrptsite.cli.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.cli.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.clivi.json b/data_descriptors/variables/apsubhrptsite.clivi.json
index d0cf18a3e..7f6e85e3d 100644
--- a/data_descriptors/variables/apsubhrptsite.clivi.json
+++ b/data_descriptors/variables/apsubhrptsite.clivi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.clivi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.clt.json b/data_descriptors/variables/apsubhrptsite.clt.json
index 4c28f2f6c..53b03cd62 100644
--- a/data_descriptors/variables/apsubhrptsite.clt.json
+++ b/data_descriptors/variables/apsubhrptsite.clt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.clt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.clw.json b/data_descriptors/variables/apsubhrptsite.clw.json
index c06222da2..538d7aae8 100644
--- a/data_descriptors/variables/apsubhrptsite.clw.json
+++ b/data_descriptors/variables/apsubhrptsite.clw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.clw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.clwvi.json b/data_descriptors/variables/apsubhrptsite.clwvi.json
index bcc74edc8..1150568d6 100644
--- a/data_descriptors/variables/apsubhrptsite.clwvi.json
+++ b/data_descriptors/variables/apsubhrptsite.clwvi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.clwvi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.edt.json b/data_descriptors/variables/apsubhrptsite.edt.json
index 089657da0..6a4d3eb50 100644
--- a/data_descriptors/variables/apsubhrptsite.edt.json
+++ b/data_descriptors/variables/apsubhrptsite.edt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.edt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.evspsbl.json b/data_descriptors/variables/apsubhrptsite.evspsbl.json
index 00060ce23..7d4b16248 100644
--- a/data_descriptors/variables/apsubhrptsite.evspsbl.json
+++ b/data_descriptors/variables/apsubhrptsite.evspsbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.evspsbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.evu.json b/data_descriptors/variables/apsubhrptsite.evu.json
index 89afd5b5e..1129686cc 100644
--- a/data_descriptors/variables/apsubhrptsite.evu.json
+++ b/data_descriptors/variables/apsubhrptsite.evu.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.evu.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.fco2antt.json b/data_descriptors/variables/apsubhrptsite.fco2antt.json
index 48cc27993..0bec9b89c 100644
--- a/data_descriptors/variables/apsubhrptsite.fco2antt.json
+++ b/data_descriptors/variables/apsubhrptsite.fco2antt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.fco2antt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.fco2fos.json b/data_descriptors/variables/apsubhrptsite.fco2fos.json
index 18b4d73c0..23069a2ab 100644
--- a/data_descriptors/variables/apsubhrptsite.fco2fos.json
+++ b/data_descriptors/variables/apsubhrptsite.fco2fos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.fco2fos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.fco2nat.json b/data_descriptors/variables/apsubhrptsite.fco2nat.json
index 3b61b3f8a..eaa690069 100644
--- a/data_descriptors/variables/apsubhrptsite.fco2nat.json
+++ b/data_descriptors/variables/apsubhrptsite.fco2nat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.fco2nat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.hfls.json b/data_descriptors/variables/apsubhrptsite.hfls.json
index 1aae1dc4b..e910e7c6b 100644
--- a/data_descriptors/variables/apsubhrptsite.hfls.json
+++ b/data_descriptors/variables/apsubhrptsite.hfls.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.hfls.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.hfss.json b/data_descriptors/variables/apsubhrptsite.hfss.json
index ed506f1c1..3836f7bcb 100644
--- a/data_descriptors/variables/apsubhrptsite.hfss.json
+++ b/data_descriptors/variables/apsubhrptsite.hfss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.hfss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.hur.json b/data_descriptors/variables/apsubhrptsite.hur.json
index d0d1eef78..e5d3228c6 100644
--- a/data_descriptors/variables/apsubhrptsite.hur.json
+++ b/data_descriptors/variables/apsubhrptsite.hur.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.hur.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.hurs.json b/data_descriptors/variables/apsubhrptsite.hurs.json
index 74fc9ae0b..aeee34adf 100644
--- a/data_descriptors/variables/apsubhrptsite.hurs.json
+++ b/data_descriptors/variables/apsubhrptsite.hurs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.hurs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.hus.json b/data_descriptors/variables/apsubhrptsite.hus.json
index 3bc1e09f5..e4b6fcfe8 100644
--- a/data_descriptors/variables/apsubhrptsite.hus.json
+++ b/data_descriptors/variables/apsubhrptsite.hus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.hus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.huss.json b/data_descriptors/variables/apsubhrptsite.huss.json
index 61323d458..aca294590 100644
--- a/data_descriptors/variables/apsubhrptsite.huss.json
+++ b/data_descriptors/variables/apsubhrptsite.huss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.huss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.mc.json b/data_descriptors/variables/apsubhrptsite.mc.json
index 7f56af916..f84929b95 100644
--- a/data_descriptors/variables/apsubhrptsite.mc.json
+++ b/data_descriptors/variables/apsubhrptsite.mc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.mc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.pfull.json b/data_descriptors/variables/apsubhrptsite.pfull.json
index d95e039ba..9c5cd371c 100644
--- a/data_descriptors/variables/apsubhrptsite.pfull.json
+++ b/data_descriptors/variables/apsubhrptsite.pfull.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.pfull.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.phalf.json b/data_descriptors/variables/apsubhrptsite.phalf.json
index 7f3eb7a41..4d5a79e00 100644
--- a/data_descriptors/variables/apsubhrptsite.phalf.json
+++ b/data_descriptors/variables/apsubhrptsite.phalf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.phalf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.pr.json b/data_descriptors/variables/apsubhrptsite.pr.json
index 118a547ef..36e349a82 100644
--- a/data_descriptors/variables/apsubhrptsite.pr.json
+++ b/data_descriptors/variables/apsubhrptsite.pr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.pr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.prc.json b/data_descriptors/variables/apsubhrptsite.prc.json
index efa284b13..8ac80ab2c 100644
--- a/data_descriptors/variables/apsubhrptsite.prc.json
+++ b/data_descriptors/variables/apsubhrptsite.prc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.prc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.prsn.json b/data_descriptors/variables/apsubhrptsite.prsn.json
index e9c42ec0a..97f97f3a4 100644
--- a/data_descriptors/variables/apsubhrptsite.prsn.json
+++ b/data_descriptors/variables/apsubhrptsite.prsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.prsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.prw.json b/data_descriptors/variables/apsubhrptsite.prw.json
index 43430a6c6..4be548cc7 100644
--- a/data_descriptors/variables/apsubhrptsite.prw.json
+++ b/data_descriptors/variables/apsubhrptsite.prw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.prw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.ps.json b/data_descriptors/variables/apsubhrptsite.ps.json
index 47b1833c7..86438a60a 100644
--- a/data_descriptors/variables/apsubhrptsite.ps.json
+++ b/data_descriptors/variables/apsubhrptsite.ps.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.ps.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.psl.json b/data_descriptors/variables/apsubhrptsite.psl.json
index 47d4a5db4..ce7e4c539 100644
--- a/data_descriptors/variables/apsubhrptsite.psl.json
+++ b/data_descriptors/variables/apsubhrptsite.psl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.psl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.reffclic.json b/data_descriptors/variables/apsubhrptsite.reffclic.json
index 150cc9098..24488156e 100644
--- a/data_descriptors/variables/apsubhrptsite.reffclic.json
+++ b/data_descriptors/variables/apsubhrptsite.reffclic.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.reffclic.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.reffclis.json b/data_descriptors/variables/apsubhrptsite.reffclis.json
index 829947e1d..43732dfbf 100644
--- a/data_descriptors/variables/apsubhrptsite.reffclis.json
+++ b/data_descriptors/variables/apsubhrptsite.reffclis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.reffclis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.reffclwc.json b/data_descriptors/variables/apsubhrptsite.reffclwc.json
index b21593fda..65b4fe662 100644
--- a/data_descriptors/variables/apsubhrptsite.reffclwc.json
+++ b/data_descriptors/variables/apsubhrptsite.reffclwc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.reffclwc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.reffclws.json b/data_descriptors/variables/apsubhrptsite.reffclws.json
index 8c2da22e6..4c852c62a 100644
--- a/data_descriptors/variables/apsubhrptsite.reffclws.json
+++ b/data_descriptors/variables/apsubhrptsite.reffclws.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.reffclws.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rld.json b/data_descriptors/variables/apsubhrptsite.rld.json
index ca9017535..39a28a3bb 100644
--- a/data_descriptors/variables/apsubhrptsite.rld.json
+++ b/data_descriptors/variables/apsubhrptsite.rld.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rld.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rldcs.json b/data_descriptors/variables/apsubhrptsite.rldcs.json
index 9aea54227..6e7d3cbbd 100644
--- a/data_descriptors/variables/apsubhrptsite.rldcs.json
+++ b/data_descriptors/variables/apsubhrptsite.rldcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rldcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rlds.json b/data_descriptors/variables/apsubhrptsite.rlds.json
index 792fb39b7..7a5682c44 100644
--- a/data_descriptors/variables/apsubhrptsite.rlds.json
+++ b/data_descriptors/variables/apsubhrptsite.rlds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rlds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rldscs.json b/data_descriptors/variables/apsubhrptsite.rldscs.json
index e473d5e9a..54d3935cb 100644
--- a/data_descriptors/variables/apsubhrptsite.rldscs.json
+++ b/data_descriptors/variables/apsubhrptsite.rldscs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rldscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rlu.json b/data_descriptors/variables/apsubhrptsite.rlu.json
index 3fe23442b..c2c086f29 100644
--- a/data_descriptors/variables/apsubhrptsite.rlu.json
+++ b/data_descriptors/variables/apsubhrptsite.rlu.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rlu.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rlucs.json b/data_descriptors/variables/apsubhrptsite.rlucs.json
index c2089962d..125d16257 100644
--- a/data_descriptors/variables/apsubhrptsite.rlucs.json
+++ b/data_descriptors/variables/apsubhrptsite.rlucs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rlucs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rlus.json b/data_descriptors/variables/apsubhrptsite.rlus.json
index 42b56f726..a35405f0b 100644
--- a/data_descriptors/variables/apsubhrptsite.rlus.json
+++ b/data_descriptors/variables/apsubhrptsite.rlus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rlus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rlut.json b/data_descriptors/variables/apsubhrptsite.rlut.json
index 02c46619a..1d3b7ee60 100644
--- a/data_descriptors/variables/apsubhrptsite.rlut.json
+++ b/data_descriptors/variables/apsubhrptsite.rlut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rlutcs.json b/data_descriptors/variables/apsubhrptsite.rlutcs.json
index 403328b8e..03a98722a 100644
--- a/data_descriptors/variables/apsubhrptsite.rlutcs.json
+++ b/data_descriptors/variables/apsubhrptsite.rlutcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rlutcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rsd.json b/data_descriptors/variables/apsubhrptsite.rsd.json
index 785e62473..e64fe9510 100644
--- a/data_descriptors/variables/apsubhrptsite.rsd.json
+++ b/data_descriptors/variables/apsubhrptsite.rsd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rsd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rsdcs.json b/data_descriptors/variables/apsubhrptsite.rsdcs.json
index c9af8bf36..ef1993081 100644
--- a/data_descriptors/variables/apsubhrptsite.rsdcs.json
+++ b/data_descriptors/variables/apsubhrptsite.rsdcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rsdcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rsds.json b/data_descriptors/variables/apsubhrptsite.rsds.json
index c02120e56..a6be5d55d 100644
--- a/data_descriptors/variables/apsubhrptsite.rsds.json
+++ b/data_descriptors/variables/apsubhrptsite.rsds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rsds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rsdscs.json b/data_descriptors/variables/apsubhrptsite.rsdscs.json
index 3a94dd865..2f2c27971 100644
--- a/data_descriptors/variables/apsubhrptsite.rsdscs.json
+++ b/data_descriptors/variables/apsubhrptsite.rsdscs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rsdscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rsdt.json b/data_descriptors/variables/apsubhrptsite.rsdt.json
index 22f124fb8..95f5331b2 100644
--- a/data_descriptors/variables/apsubhrptsite.rsdt.json
+++ b/data_descriptors/variables/apsubhrptsite.rsdt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rsdt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rsu.json b/data_descriptors/variables/apsubhrptsite.rsu.json
index 8e134b5b8..ea12b5301 100644
--- a/data_descriptors/variables/apsubhrptsite.rsu.json
+++ b/data_descriptors/variables/apsubhrptsite.rsu.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rsu.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rsucs.json b/data_descriptors/variables/apsubhrptsite.rsucs.json
index ae9cfb912..2240088f3 100644
--- a/data_descriptors/variables/apsubhrptsite.rsucs.json
+++ b/data_descriptors/variables/apsubhrptsite.rsucs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rsucs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rsus.json b/data_descriptors/variables/apsubhrptsite.rsus.json
index 6c44242ba..82866ae67 100644
--- a/data_descriptors/variables/apsubhrptsite.rsus.json
+++ b/data_descriptors/variables/apsubhrptsite.rsus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rsus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rsuscs.json b/data_descriptors/variables/apsubhrptsite.rsuscs.json
index a0f9e0cc7..985e2c83d 100644
--- a/data_descriptors/variables/apsubhrptsite.rsuscs.json
+++ b/data_descriptors/variables/apsubhrptsite.rsuscs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rsuscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rsut.json b/data_descriptors/variables/apsubhrptsite.rsut.json
index 9b47c1f92..360ffa264 100644
--- a/data_descriptors/variables/apsubhrptsite.rsut.json
+++ b/data_descriptors/variables/apsubhrptsite.rsut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rsut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rsutcs.json b/data_descriptors/variables/apsubhrptsite.rsutcs.json
index f9e6eab80..6d603a300 100644
--- a/data_descriptors/variables/apsubhrptsite.rsutcs.json
+++ b/data_descriptors/variables/apsubhrptsite.rsutcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rsutcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.rtmt.json b/data_descriptors/variables/apsubhrptsite.rtmt.json
index fd8d08a56..2c2df33ea 100644
--- a/data_descriptors/variables/apsubhrptsite.rtmt.json
+++ b/data_descriptors/variables/apsubhrptsite.rtmt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.rtmt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.sci.json b/data_descriptors/variables/apsubhrptsite.sci.json
index a74bde4c4..6df41234d 100644
--- a/data_descriptors/variables/apsubhrptsite.sci.json
+++ b/data_descriptors/variables/apsubhrptsite.sci.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.sci.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.sfcwind.json b/data_descriptors/variables/apsubhrptsite.sfcwind.json
index 14aa9a632..8a188d063 100644
--- a/data_descriptors/variables/apsubhrptsite.sfcwind.json
+++ b/data_descriptors/variables/apsubhrptsite.sfcwind.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.sfcwind.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.ta.json b/data_descriptors/variables/apsubhrptsite.ta.json
index aecb17c9e..773ae724c 100644
--- a/data_descriptors/variables/apsubhrptsite.ta.json
+++ b/data_descriptors/variables/apsubhrptsite.ta.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.ta.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tas.json b/data_descriptors/variables/apsubhrptsite.tas.json
index aeffd57b3..fc4db48a8 100644
--- a/data_descriptors/variables/apsubhrptsite.tas.json
+++ b/data_descriptors/variables/apsubhrptsite.tas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tauu.json b/data_descriptors/variables/apsubhrptsite.tauu.json
index d3bdabcfe..b8168fde3 100644
--- a/data_descriptors/variables/apsubhrptsite.tauu.json
+++ b/data_descriptors/variables/apsubhrptsite.tauu.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tauu.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tauv.json b/data_descriptors/variables/apsubhrptsite.tauv.json
index c5ac5baa1..b0e31df8d 100644
--- a/data_descriptors/variables/apsubhrptsite.tauv.json
+++ b/data_descriptors/variables/apsubhrptsite.tauv.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tauv.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tnhus.json b/data_descriptors/variables/apsubhrptsite.tnhus.json
index 53f843c8c..a7fd0ff55 100644
--- a/data_descriptors/variables/apsubhrptsite.tnhus.json
+++ b/data_descriptors/variables/apsubhrptsite.tnhus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tnhus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tnhusa.json b/data_descriptors/variables/apsubhrptsite.tnhusa.json
index 632a141e3..aa525c850 100644
--- a/data_descriptors/variables/apsubhrptsite.tnhusa.json
+++ b/data_descriptors/variables/apsubhrptsite.tnhusa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tnhusa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tnhusc.json b/data_descriptors/variables/apsubhrptsite.tnhusc.json
index ff1407c86..9e3d8bebc 100644
--- a/data_descriptors/variables/apsubhrptsite.tnhusc.json
+++ b/data_descriptors/variables/apsubhrptsite.tnhusc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tnhusc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tnhusd.json b/data_descriptors/variables/apsubhrptsite.tnhusd.json
index 549cfc787..9deb5a2df 100644
--- a/data_descriptors/variables/apsubhrptsite.tnhusd.json
+++ b/data_descriptors/variables/apsubhrptsite.tnhusd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tnhusd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tnhusmp.json b/data_descriptors/variables/apsubhrptsite.tnhusmp.json
index fc5a72b92..c87b304a8 100644
--- a/data_descriptors/variables/apsubhrptsite.tnhusmp.json
+++ b/data_descriptors/variables/apsubhrptsite.tnhusmp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tnhusmp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tnhuspbl.json b/data_descriptors/variables/apsubhrptsite.tnhuspbl.json
index 880883b94..f089aa49c 100644
--- a/data_descriptors/variables/apsubhrptsite.tnhuspbl.json
+++ b/data_descriptors/variables/apsubhrptsite.tnhuspbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tnhuspbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tnhusscp.json b/data_descriptors/variables/apsubhrptsite.tnhusscp.json
index efc5f6e60..ed33bce98 100644
--- a/data_descriptors/variables/apsubhrptsite.tnhusscp.json
+++ b/data_descriptors/variables/apsubhrptsite.tnhusscp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tnhusscp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tnhusscpbl.json b/data_descriptors/variables/apsubhrptsite.tnhusscpbl.json
index 683bffbc7..3b6ee7b3e 100644
--- a/data_descriptors/variables/apsubhrptsite.tnhusscpbl.json
+++ b/data_descriptors/variables/apsubhrptsite.tnhusscpbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tnhusscpbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tnt.json b/data_descriptors/variables/apsubhrptsite.tnt.json
index 1835d9246..96f5968fa 100644
--- a/data_descriptors/variables/apsubhrptsite.tnt.json
+++ b/data_descriptors/variables/apsubhrptsite.tnt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tnt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tnta.json b/data_descriptors/variables/apsubhrptsite.tnta.json
index 18ea37739..f55ec1e6c 100644
--- a/data_descriptors/variables/apsubhrptsite.tnta.json
+++ b/data_descriptors/variables/apsubhrptsite.tnta.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tnta.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tntc.json b/data_descriptors/variables/apsubhrptsite.tntc.json
index c55c21d5f..5867e7226 100644
--- a/data_descriptors/variables/apsubhrptsite.tntc.json
+++ b/data_descriptors/variables/apsubhrptsite.tntc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tntc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tntd.json b/data_descriptors/variables/apsubhrptsite.tntd.json
index fe0762aee..cf33858b5 100644
--- a/data_descriptors/variables/apsubhrptsite.tntd.json
+++ b/data_descriptors/variables/apsubhrptsite.tntd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tntd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tntmp.json b/data_descriptors/variables/apsubhrptsite.tntmp.json
index de15f82fd..6069873b9 100644
--- a/data_descriptors/variables/apsubhrptsite.tntmp.json
+++ b/data_descriptors/variables/apsubhrptsite.tntmp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tntmp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tntpbl.json b/data_descriptors/variables/apsubhrptsite.tntpbl.json
index da764270e..618dba911 100644
--- a/data_descriptors/variables/apsubhrptsite.tntpbl.json
+++ b/data_descriptors/variables/apsubhrptsite.tntpbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tntpbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tntr.json b/data_descriptors/variables/apsubhrptsite.tntr.json
index 3d3e04bc1..c95ccc27c 100644
--- a/data_descriptors/variables/apsubhrptsite.tntr.json
+++ b/data_descriptors/variables/apsubhrptsite.tntr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tntr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tntrlcs.json b/data_descriptors/variables/apsubhrptsite.tntrlcs.json
index 4faa5c31c..70ecf15be 100644
--- a/data_descriptors/variables/apsubhrptsite.tntrlcs.json
+++ b/data_descriptors/variables/apsubhrptsite.tntrlcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tntrlcs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tntrscs.json b/data_descriptors/variables/apsubhrptsite.tntrscs.json
index 6eb8f1734..56f45d5ee 100644
--- a/data_descriptors/variables/apsubhrptsite.tntrscs.json
+++ b/data_descriptors/variables/apsubhrptsite.tntrscs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tntrscs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tntscp.json b/data_descriptors/variables/apsubhrptsite.tntscp.json
index ac3de5880..9128f87dc 100644
--- a/data_descriptors/variables/apsubhrptsite.tntscp.json
+++ b/data_descriptors/variables/apsubhrptsite.tntscp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tntscp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.tntscpbl.json b/data_descriptors/variables/apsubhrptsite.tntscpbl.json
index e78a6a471..a920e9657 100644
--- a/data_descriptors/variables/apsubhrptsite.tntscpbl.json
+++ b/data_descriptors/variables/apsubhrptsite.tntscpbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.tntscpbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.ts.json b/data_descriptors/variables/apsubhrptsite.ts.json
index 48eaf26c4..e9ab5d243 100644
--- a/data_descriptors/variables/apsubhrptsite.ts.json
+++ b/data_descriptors/variables/apsubhrptsite.ts.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.ts.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.ua.json b/data_descriptors/variables/apsubhrptsite.ua.json
index 48fc92c85..f56793b9b 100644
--- a/data_descriptors/variables/apsubhrptsite.ua.json
+++ b/data_descriptors/variables/apsubhrptsite.ua.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.ua.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.uas.json b/data_descriptors/variables/apsubhrptsite.uas.json
index b5f43abfa..34277178f 100644
--- a/data_descriptors/variables/apsubhrptsite.uas.json
+++ b/data_descriptors/variables/apsubhrptsite.uas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.uas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.va.json b/data_descriptors/variables/apsubhrptsite.va.json
index 51f22a9aa..56eea8dca 100644
--- a/data_descriptors/variables/apsubhrptsite.va.json
+++ b/data_descriptors/variables/apsubhrptsite.va.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.va.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.vas.json b/data_descriptors/variables/apsubhrptsite.vas.json
index bcfaec9bd..5b88744c7 100644
--- a/data_descriptors/variables/apsubhrptsite.vas.json
+++ b/data_descriptors/variables/apsubhrptsite.vas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.vas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.wap.json b/data_descriptors/variables/apsubhrptsite.wap.json
index 36bdc37fc..fa501489a 100644
--- a/data_descriptors/variables/apsubhrptsite.wap.json
+++ b/data_descriptors/variables/apsubhrptsite.wap.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.wap.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/apsubhrptsite.zg.json b/data_descriptors/variables/apsubhrptsite.zg.json
index 41c590629..43b3e596f 100644
--- a/data_descriptors/variables/apsubhrptsite.zg.json
+++ b/data_descriptors/variables/apsubhrptsite.zg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "apsubhrptsite.zg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "apsubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giafx.areacellg.json b/data_descriptors/variables/giafx.areacellg.json
index 7c68ed2f4..aa8cc2fc4 100644
--- a/data_descriptors/variables/giafx.areacellg.json
+++ b/data_descriptors/variables/giafx.areacellg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giafx.areacellg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giafx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giafx.hfgeoubed.json b/data_descriptors/variables/giafx.hfgeoubed.json
index 9a71a0922..1f0bb2325 100644
--- a/data_descriptors/variables/giafx.hfgeoubed.json
+++ b/data_descriptors/variables/giafx.hfgeoubed.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giafx.hfgeoubed.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giafx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giafx.lithk.json b/data_descriptors/variables/giafx.lithk.json
index bef1bfb44..fcd2af0dc 100644
--- a/data_descriptors/variables/giafx.lithk.json
+++ b/data_descriptors/variables/giafx.lithk.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giafx.lithk.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giafx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giafx.topg.json b/data_descriptors/variables/giafx.topg.json
index 781e004a4..673f8ed1e 100644
--- a/data_descriptors/variables/giafx.topg.json
+++ b/data_descriptors/variables/giafx.topg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giafx.topg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giafx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.acabf.json b/data_descriptors/variables/giamon.acabf.json
index 7642af17c..4d6b8f0ea 100644
--- a/data_descriptors/variables/giamon.acabf.json
+++ b/data_descriptors/variables/giamon.acabf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giamon.acabf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giamon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.hfls.json b/data_descriptors/variables/giamon.hfls.json
index cfbbf7709..950953645 100644
--- a/data_descriptors/variables/giamon.hfls.json
+++ b/data_descriptors/variables/giamon.hfls.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giamon.hfls.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giamon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.hfss.json b/data_descriptors/variables/giamon.hfss.json
index 9255ecc46..8fda35e15 100644
--- a/data_descriptors/variables/giamon.hfss.json
+++ b/data_descriptors/variables/giamon.hfss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giamon.hfss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giamon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.icem.json b/data_descriptors/variables/giamon.icem.json
index 068193127..f2a814469 100644
--- a/data_descriptors/variables/giamon.icem.json
+++ b/data_descriptors/variables/giamon.icem.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giamon.icem.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giamon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.libmassbffl.json b/data_descriptors/variables/giamon.libmassbffl.json
index 8089df11f..a75760595 100644
--- a/data_descriptors/variables/giamon.libmassbffl.json
+++ b/data_descriptors/variables/giamon.libmassbffl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giamon.libmassbffl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giamon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.libmassbfgr.json b/data_descriptors/variables/giamon.libmassbfgr.json
index 64dec5b53..681cb188a 100644
--- a/data_descriptors/variables/giamon.libmassbfgr.json
+++ b/data_descriptors/variables/giamon.libmassbfgr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giamon.libmassbfgr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giamon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.licalvf.json b/data_descriptors/variables/giamon.licalvf.json
index 65aa6be8b..4d44bf6d6 100644
--- a/data_descriptors/variables/giamon.licalvf.json
+++ b/data_descriptors/variables/giamon.licalvf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giamon.licalvf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giamon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.lifmassbf.json b/data_descriptors/variables/giamon.lifmassbf.json
index d863cd6d4..f46f33c0d 100644
--- a/data_descriptors/variables/giamon.lifmassbf.json
+++ b/data_descriptors/variables/giamon.lifmassbf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giamon.lifmassbf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giamon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.litempbotfl.json b/data_descriptors/variables/giamon.litempbotfl.json
index 214ca5b22..03e7d7012 100644
--- a/data_descriptors/variables/giamon.litempbotfl.json
+++ b/data_descriptors/variables/giamon.litempbotfl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giamon.litempbotfl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giamon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.litempbotgr.json b/data_descriptors/variables/giamon.litempbotgr.json
index 5077573ce..c907d0801 100644
--- a/data_descriptors/variables/giamon.litempbotgr.json
+++ b/data_descriptors/variables/giamon.litempbotgr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giamon.litempbotgr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giamon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.litemptop.json b/data_descriptors/variables/giamon.litemptop.json
index e94b2d883..98355b8c9 100644
--- a/data_descriptors/variables/giamon.litemptop.json
+++ b/data_descriptors/variables/giamon.litemptop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giamon.litemptop.json",
   "type": "mip-variable",
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.mrroli.json b/data_descriptors/variables/giamon.mrroli.json
index 7121f4814..3fe795d46 100644
--- a/data_descriptors/variables/giamon.mrroli.json
+++ b/data_descriptors/variables/giamon.mrroli.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/giamon.orog.json b/data_descriptors/variables/giamon.orog.json
index c1bd0c023..b60b71dd1 100644
--- a/data_descriptors/variables/giamon.orog.json
+++ b/data_descriptors/variables/giamon.orog.json
@@ -2,7 +2,7 @@
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   "id": "giamon.orog.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
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index fc06afa6e..d185c8d2d 100644
--- a/data_descriptors/variables/giamon.prra.json
+++ b/data_descriptors/variables/giamon.prra.json
@@ -2,7 +2,7 @@
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   "id": "giamon.prra.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.prsn.json b/data_descriptors/variables/giamon.prsn.json
index 0995a77c5..9966ab098 100644
--- a/data_descriptors/variables/giamon.prsn.json
+++ b/data_descriptors/variables/giamon.prsn.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.rlds.json b/data_descriptors/variables/giamon.rlds.json
index 41eaf4b17..d9956220a 100644
--- a/data_descriptors/variables/giamon.rlds.json
+++ b/data_descriptors/variables/giamon.rlds.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
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index 46378c52e..58c896a12 100644
--- a/data_descriptors/variables/giamon.rlus.json
+++ b/data_descriptors/variables/giamon.rlus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giamon.rlus.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.rsds.json b/data_descriptors/variables/giamon.rsds.json
index f211f1ffe..5c95d7d38 100644
--- a/data_descriptors/variables/giamon.rsds.json
+++ b/data_descriptors/variables/giamon.rsds.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.rsus.json b/data_descriptors/variables/giamon.rsus.json
index e3aa3da20..5b9f70db3 100644
--- a/data_descriptors/variables/giamon.rsus.json
+++ b/data_descriptors/variables/giamon.rsus.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.sbl.json b/data_descriptors/variables/giamon.sbl.json
index 7f740cca3..e0fb98bfb 100644
--- a/data_descriptors/variables/giamon.sbl.json
+++ b/data_descriptors/variables/giamon.sbl.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.snc.json b/data_descriptors/variables/giamon.snc.json
index 7b72f00e1..6199a11ac 100644
--- a/data_descriptors/variables/giamon.snc.json
+++ b/data_descriptors/variables/giamon.snc.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.snicefreez.json b/data_descriptors/variables/giamon.snicefreez.json
index 603c8ba1b..fb25c55f6 100644
--- a/data_descriptors/variables/giamon.snicefreez.json
+++ b/data_descriptors/variables/giamon.snicefreez.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/giamon.snicem.json b/data_descriptors/variables/giamon.snicem.json
index 501f55cac..abccf0072 100644
--- a/data_descriptors/variables/giamon.snicem.json
+++ b/data_descriptors/variables/giamon.snicem.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/giamon.snm.json b/data_descriptors/variables/giamon.snm.json
index 1726d168a..792519199 100644
--- a/data_descriptors/variables/giamon.snm.json
+++ b/data_descriptors/variables/giamon.snm.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.tas.json b/data_descriptors/variables/giamon.tas.json
index 030efff70..a87828a0d 100644
--- a/data_descriptors/variables/giamon.tas.json
+++ b/data_descriptors/variables/giamon.tas.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.ts.json b/data_descriptors/variables/giamon.ts.json
index 15d9bc17b..4e8b7d55f 100644
--- a/data_descriptors/variables/giamon.ts.json
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@@ -2,7 +2,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giamon.tsn.json b/data_descriptors/variables/giamon.tsn.json
index b81618f3e..a3c619a91 100644
--- a/data_descriptors/variables/giamon.tsn.json
+++ b/data_descriptors/variables/giamon.tsn.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/giayr.acabf.json b/data_descriptors/variables/giayr.acabf.json
index e37c3b0b5..658384205 100644
--- a/data_descriptors/variables/giayr.acabf.json
+++ b/data_descriptors/variables/giayr.acabf.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.hfgeoubed.json b/data_descriptors/variables/giayr.hfgeoubed.json
index 7e916c08a..a17879df2 100644
--- a/data_descriptors/variables/giayr.hfgeoubed.json
+++ b/data_descriptors/variables/giayr.hfgeoubed.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/giayr.iareafl.json b/data_descriptors/variables/giayr.iareafl.json
index 80da9ffff..aaf6808e6 100644
--- a/data_descriptors/variables/giayr.iareafl.json
+++ b/data_descriptors/variables/giayr.iareafl.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.iareagr.json b/data_descriptors/variables/giayr.iareagr.json
index defcec871..4cd9c6e47 100644
--- a/data_descriptors/variables/giayr.iareagr.json
+++ b/data_descriptors/variables/giayr.iareagr.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.libmassbffl.json b/data_descriptors/variables/giayr.libmassbffl.json
index 4a1d4feda..898279daf 100644
--- a/data_descriptors/variables/giayr.libmassbffl.json
+++ b/data_descriptors/variables/giayr.libmassbffl.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.libmassbfgr.json b/data_descriptors/variables/giayr.libmassbfgr.json
index eef730945..6050d66ed 100644
--- a/data_descriptors/variables/giayr.libmassbfgr.json
+++ b/data_descriptors/variables/giayr.libmassbfgr.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/giayr.licalvf.json b/data_descriptors/variables/giayr.licalvf.json
index af52ce887..839109717 100644
--- a/data_descriptors/variables/giayr.licalvf.json
+++ b/data_descriptors/variables/giayr.licalvf.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/giayr.lifmassbf.json b/data_descriptors/variables/giayr.lifmassbf.json
index af1012db4..504812ebe 100644
--- a/data_descriptors/variables/giayr.lifmassbf.json
+++ b/data_descriptors/variables/giayr.lifmassbf.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/giayr.lim.json b/data_descriptors/variables/giayr.lim.json
index fd9cbc1f3..9b725fde1 100644
--- a/data_descriptors/variables/giayr.lim.json
+++ b/data_descriptors/variables/giayr.lim.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/giayr.limnsw.json b/data_descriptors/variables/giayr.limnsw.json
index f847d369f..db8676f1f 100644
--- a/data_descriptors/variables/giayr.limnsw.json
+++ b/data_descriptors/variables/giayr.limnsw.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/giayr.litempbotfl.json b/data_descriptors/variables/giayr.litempbotfl.json
index c4e8c1c0e..473f67b50 100644
--- a/data_descriptors/variables/giayr.litempbotfl.json
+++ b/data_descriptors/variables/giayr.litempbotfl.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/giayr.litempbotgr.json b/data_descriptors/variables/giayr.litempbotgr.json
index dbda9874a..93e3ed585 100644
--- a/data_descriptors/variables/giayr.litempbotgr.json
+++ b/data_descriptors/variables/giayr.litempbotgr.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/giayr.litemptop.json b/data_descriptors/variables/giayr.litemptop.json
index 96a739fa4..e0e3cb4f2 100644
--- a/data_descriptors/variables/giayr.litemptop.json
+++ b/data_descriptors/variables/giayr.litemptop.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/giayr.lithk.json b/data_descriptors/variables/giayr.lithk.json
index 0dfaf0aa0..b5b46f3ba 100644
--- a/data_descriptors/variables/giayr.lithk.json
+++ b/data_descriptors/variables/giayr.lithk.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/giayr.modelcellareai.json b/data_descriptors/variables/giayr.modelcellareai.json
index 30e847efc..ca598cadf 100644
--- a/data_descriptors/variables/giayr.modelcellareai.json
+++ b/data_descriptors/variables/giayr.modelcellareai.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/giayr.orog.json b/data_descriptors/variables/giayr.orog.json
index bf264abea..dc60f32c8 100644
--- a/data_descriptors/variables/giayr.orog.json
+++ b/data_descriptors/variables/giayr.orog.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/giayr.sftflf.json b/data_descriptors/variables/giayr.sftflf.json
index 74d063103..6da7f44e4 100644
--- a/data_descriptors/variables/giayr.sftflf.json
+++ b/data_descriptors/variables/giayr.sftflf.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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diff --git a/data_descriptors/variables/giayr.sftgif.json b/data_descriptors/variables/giayr.sftgif.json
index 70d406949..17bcda18b 100644
--- a/data_descriptors/variables/giayr.sftgif.json
+++ b/data_descriptors/variables/giayr.sftgif.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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diff --git a/data_descriptors/variables/giayr.sftgrf.json b/data_descriptors/variables/giayr.sftgrf.json
index 09e836a1b..1ee9c2c5f 100644
--- a/data_descriptors/variables/giayr.sftgrf.json
+++ b/data_descriptors/variables/giayr.sftgrf.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.snc.json b/data_descriptors/variables/giayr.snc.json
index 74ce9765b..1b6651626 100644
--- a/data_descriptors/variables/giayr.snc.json
+++ b/data_descriptors/variables/giayr.snc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giayr.snc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giayr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.strbasemag.json b/data_descriptors/variables/giayr.strbasemag.json
index 74a984024..aeae3cd55 100644
--- a/data_descriptors/variables/giayr.strbasemag.json
+++ b/data_descriptors/variables/giayr.strbasemag.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giayr.strbasemag.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giayr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.tendacabf.json b/data_descriptors/variables/giayr.tendacabf.json
index f92bfd8b4..dfa693c10 100644
--- a/data_descriptors/variables/giayr.tendacabf.json
+++ b/data_descriptors/variables/giayr.tendacabf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giayr.tendacabf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giayr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.tendlibmassbf.json b/data_descriptors/variables/giayr.tendlibmassbf.json
index f17d10a45..02dac87fc 100644
--- a/data_descriptors/variables/giayr.tendlibmassbf.json
+++ b/data_descriptors/variables/giayr.tendlibmassbf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giayr.tendlibmassbf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giayr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.tendlicalvf.json b/data_descriptors/variables/giayr.tendlicalvf.json
index b9f2351f9..bf8dca288 100644
--- a/data_descriptors/variables/giayr.tendlicalvf.json
+++ b/data_descriptors/variables/giayr.tendlicalvf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giayr.tendlicalvf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giayr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.topg.json b/data_descriptors/variables/giayr.topg.json
index 54dda0c08..18af1d15b 100644
--- a/data_descriptors/variables/giayr.topg.json
+++ b/data_descriptors/variables/giayr.topg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giayr.topg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giayr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.xvelbase.json b/data_descriptors/variables/giayr.xvelbase.json
index b6e1ecefa..9782aab27 100644
--- a/data_descriptors/variables/giayr.xvelbase.json
+++ b/data_descriptors/variables/giayr.xvelbase.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giayr.xvelbase.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giayr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.xvelmean.json b/data_descriptors/variables/giayr.xvelmean.json
index f29c62b9e..81a87c882 100644
--- a/data_descriptors/variables/giayr.xvelmean.json
+++ b/data_descriptors/variables/giayr.xvelmean.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giayr.xvelmean.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giayr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.xvelsurf.json b/data_descriptors/variables/giayr.xvelsurf.json
index 4ee6a2450..9a124c654 100644
--- a/data_descriptors/variables/giayr.xvelsurf.json
+++ b/data_descriptors/variables/giayr.xvelsurf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giayr.xvelsurf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giayr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.yvelbase.json b/data_descriptors/variables/giayr.yvelbase.json
index 2cd991639..e5fb0b2a6 100644
--- a/data_descriptors/variables/giayr.yvelbase.json
+++ b/data_descriptors/variables/giayr.yvelbase.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giayr.yvelbase.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giayr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.yvelmean.json b/data_descriptors/variables/giayr.yvelmean.json
index 87727f90d..e56023711 100644
--- a/data_descriptors/variables/giayr.yvelmean.json
+++ b/data_descriptors/variables/giayr.yvelmean.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giayr.yvelmean.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giayr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.yvelsurf.json b/data_descriptors/variables/giayr.yvelsurf.json
index 77eadd18c..d99018bfc 100644
--- a/data_descriptors/variables/giayr.yvelsurf.json
+++ b/data_descriptors/variables/giayr.yvelsurf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giayr.yvelsurf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giayr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.zvelbase.json b/data_descriptors/variables/giayr.zvelbase.json
index 98d172a9e..d66a803f8 100644
--- a/data_descriptors/variables/giayr.zvelbase.json
+++ b/data_descriptors/variables/giayr.zvelbase.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giayr.zvelbase.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "giayr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/giayr.zvelsurf.json b/data_descriptors/variables/giayr.zvelsurf.json
index e38a96d4e..251c29b4b 100644
--- a/data_descriptors/variables/giayr.zvelsurf.json
+++ b/data_descriptors/variables/giayr.zvelsurf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "giayr.zvelsurf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "giayr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigfx.areacellg.json b/data_descriptors/variables/gigfx.areacellg.json
index 12100ffe9..699753ebb 100644
--- a/data_descriptors/variables/gigfx.areacellg.json
+++ b/data_descriptors/variables/gigfx.areacellg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigfx.areacellg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigfx.hfgeoubed.json b/data_descriptors/variables/gigfx.hfgeoubed.json
index 184143808..6ca2d4ca1 100644
--- a/data_descriptors/variables/gigfx.hfgeoubed.json
+++ b/data_descriptors/variables/gigfx.hfgeoubed.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigfx.hfgeoubed.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigfx.lithk.json b/data_descriptors/variables/gigfx.lithk.json
index 57632f4d2..03b2bfb8a 100644
--- a/data_descriptors/variables/gigfx.lithk.json
+++ b/data_descriptors/variables/gigfx.lithk.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigfx.lithk.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigfx.topg.json b/data_descriptors/variables/gigfx.topg.json
index fee92df95..26c7a5a5d 100644
--- a/data_descriptors/variables/gigfx.topg.json
+++ b/data_descriptors/variables/gigfx.topg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigfx.topg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.acabf.json b/data_descriptors/variables/gigmon.acabf.json
index e99fa6825..7c9a968b9 100644
--- a/data_descriptors/variables/gigmon.acabf.json
+++ b/data_descriptors/variables/gigmon.acabf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.acabf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.hfls.json b/data_descriptors/variables/gigmon.hfls.json
index 5362102ff..800da0f13 100644
--- a/data_descriptors/variables/gigmon.hfls.json
+++ b/data_descriptors/variables/gigmon.hfls.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.hfls.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.hfss.json b/data_descriptors/variables/gigmon.hfss.json
index 779cd866f..3c96a8906 100644
--- a/data_descriptors/variables/gigmon.hfss.json
+++ b/data_descriptors/variables/gigmon.hfss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.hfss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.icem.json b/data_descriptors/variables/gigmon.icem.json
index af6e00574..193e6cc6e 100644
--- a/data_descriptors/variables/gigmon.icem.json
+++ b/data_descriptors/variables/gigmon.icem.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.icem.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.libmassbffl.json b/data_descriptors/variables/gigmon.libmassbffl.json
index 470630219..ef8784fec 100644
--- a/data_descriptors/variables/gigmon.libmassbffl.json
+++ b/data_descriptors/variables/gigmon.libmassbffl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.libmassbffl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.libmassbfgr.json b/data_descriptors/variables/gigmon.libmassbfgr.json
index d8ba2680e..4f3147dac 100644
--- a/data_descriptors/variables/gigmon.libmassbfgr.json
+++ b/data_descriptors/variables/gigmon.libmassbfgr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.libmassbfgr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.licalvf.json b/data_descriptors/variables/gigmon.licalvf.json
index 65d0ecaaf..1cf63c97b 100644
--- a/data_descriptors/variables/gigmon.licalvf.json
+++ b/data_descriptors/variables/gigmon.licalvf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.licalvf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.lifmassbf.json b/data_descriptors/variables/gigmon.lifmassbf.json
index 1cca1a691..a54d0a35f 100644
--- a/data_descriptors/variables/gigmon.lifmassbf.json
+++ b/data_descriptors/variables/gigmon.lifmassbf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.lifmassbf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.litempbotfl.json b/data_descriptors/variables/gigmon.litempbotfl.json
index c74f83e73..25297f8a4 100644
--- a/data_descriptors/variables/gigmon.litempbotfl.json
+++ b/data_descriptors/variables/gigmon.litempbotfl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.litempbotfl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.litempbotgr.json b/data_descriptors/variables/gigmon.litempbotgr.json
index f67e07f76..055e5ace6 100644
--- a/data_descriptors/variables/gigmon.litempbotgr.json
+++ b/data_descriptors/variables/gigmon.litempbotgr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.litempbotgr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.litemptop.json b/data_descriptors/variables/gigmon.litemptop.json
index 4b6aad0dc..2a76d2136 100644
--- a/data_descriptors/variables/gigmon.litemptop.json
+++ b/data_descriptors/variables/gigmon.litemptop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.litemptop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.mrroli.json b/data_descriptors/variables/gigmon.mrroli.json
index f0b8c2f0a..58699eea0 100644
--- a/data_descriptors/variables/gigmon.mrroli.json
+++ b/data_descriptors/variables/gigmon.mrroli.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.mrroli.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.orog.json b/data_descriptors/variables/gigmon.orog.json
index c8936dee0..de09ed58f 100644
--- a/data_descriptors/variables/gigmon.orog.json
+++ b/data_descriptors/variables/gigmon.orog.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.orog.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.prra.json b/data_descriptors/variables/gigmon.prra.json
index f0c744469..f4949e957 100644
--- a/data_descriptors/variables/gigmon.prra.json
+++ b/data_descriptors/variables/gigmon.prra.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.prra.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.prsn.json b/data_descriptors/variables/gigmon.prsn.json
index 0391858c1..d74e71a76 100644
--- a/data_descriptors/variables/gigmon.prsn.json
+++ b/data_descriptors/variables/gigmon.prsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.prsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.rlds.json b/data_descriptors/variables/gigmon.rlds.json
index edc06bf3f..aa4c11ebc 100644
--- a/data_descriptors/variables/gigmon.rlds.json
+++ b/data_descriptors/variables/gigmon.rlds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.rlds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.rlus.json b/data_descriptors/variables/gigmon.rlus.json
index fa78acf64..40098ae88 100644
--- a/data_descriptors/variables/gigmon.rlus.json
+++ b/data_descriptors/variables/gigmon.rlus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.rlus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.rsds.json b/data_descriptors/variables/gigmon.rsds.json
index 2bb6fe8c2..4e95d8376 100644
--- a/data_descriptors/variables/gigmon.rsds.json
+++ b/data_descriptors/variables/gigmon.rsds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.rsds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.rsus.json b/data_descriptors/variables/gigmon.rsus.json
index fdb8078ae..6a1c8732a 100644
--- a/data_descriptors/variables/gigmon.rsus.json
+++ b/data_descriptors/variables/gigmon.rsus.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.rsus.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.sbl.json b/data_descriptors/variables/gigmon.sbl.json
index 43016d88d..f306f1ebd 100644
--- a/data_descriptors/variables/gigmon.sbl.json
+++ b/data_descriptors/variables/gigmon.sbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.sbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.snc.json b/data_descriptors/variables/gigmon.snc.json
index 5327f98b1..31c193cad 100644
--- a/data_descriptors/variables/gigmon.snc.json
+++ b/data_descriptors/variables/gigmon.snc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.snc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.snicefreez.json b/data_descriptors/variables/gigmon.snicefreez.json
index fa4249723..33b152061 100644
--- a/data_descriptors/variables/gigmon.snicefreez.json
+++ b/data_descriptors/variables/gigmon.snicefreez.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.snicefreez.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.snicem.json b/data_descriptors/variables/gigmon.snicem.json
index bb8a47a91..db67c00ed 100644
--- a/data_descriptors/variables/gigmon.snicem.json
+++ b/data_descriptors/variables/gigmon.snicem.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.snicem.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.snm.json b/data_descriptors/variables/gigmon.snm.json
index 9e5890ca1..b5ce9e4ff 100644
--- a/data_descriptors/variables/gigmon.snm.json
+++ b/data_descriptors/variables/gigmon.snm.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.snm.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.tas.json b/data_descriptors/variables/gigmon.tas.json
index cdc7ffb32..da8936838 100644
--- a/data_descriptors/variables/gigmon.tas.json
+++ b/data_descriptors/variables/gigmon.tas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.tas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.ts.json b/data_descriptors/variables/gigmon.ts.json
index be93a5a82..32c8ddb09 100644
--- a/data_descriptors/variables/gigmon.ts.json
+++ b/data_descriptors/variables/gigmon.ts.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.ts.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigmon.tsn.json b/data_descriptors/variables/gigmon.tsn.json
index 7cde69a21..a36cdf427 100644
--- a/data_descriptors/variables/gigmon.tsn.json
+++ b/data_descriptors/variables/gigmon.tsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigmon.tsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.acabf.json b/data_descriptors/variables/gigyr.acabf.json
index 22576e354..92b01f4e6 100644
--- a/data_descriptors/variables/gigyr.acabf.json
+++ b/data_descriptors/variables/gigyr.acabf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.acabf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.hfgeoubed.json b/data_descriptors/variables/gigyr.hfgeoubed.json
index d71ced11b..efe5aa3c7 100644
--- a/data_descriptors/variables/gigyr.hfgeoubed.json
+++ b/data_descriptors/variables/gigyr.hfgeoubed.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.hfgeoubed.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.iareafl.json b/data_descriptors/variables/gigyr.iareafl.json
index a1cbb49c3..7ac39600e 100644
--- a/data_descriptors/variables/gigyr.iareafl.json
+++ b/data_descriptors/variables/gigyr.iareafl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.iareafl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.iareagr.json b/data_descriptors/variables/gigyr.iareagr.json
index cb61d8f6d..e75fb80bf 100644
--- a/data_descriptors/variables/gigyr.iareagr.json
+++ b/data_descriptors/variables/gigyr.iareagr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.iareagr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.libmassbffl.json b/data_descriptors/variables/gigyr.libmassbffl.json
index a4ca19780..b78a2ecbf 100644
--- a/data_descriptors/variables/gigyr.libmassbffl.json
+++ b/data_descriptors/variables/gigyr.libmassbffl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.libmassbffl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.libmassbfgr.json b/data_descriptors/variables/gigyr.libmassbfgr.json
index 2d1feb25c..49ed32034 100644
--- a/data_descriptors/variables/gigyr.libmassbfgr.json
+++ b/data_descriptors/variables/gigyr.libmassbfgr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.libmassbfgr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.licalvf.json b/data_descriptors/variables/gigyr.licalvf.json
index 790c82f10..f4b5a7bdc 100644
--- a/data_descriptors/variables/gigyr.licalvf.json
+++ b/data_descriptors/variables/gigyr.licalvf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.licalvf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.lifmassbf.json b/data_descriptors/variables/gigyr.lifmassbf.json
index 075349901..23e87de7d 100644
--- a/data_descriptors/variables/gigyr.lifmassbf.json
+++ b/data_descriptors/variables/gigyr.lifmassbf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.lifmassbf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.lim.json b/data_descriptors/variables/gigyr.lim.json
index 14f023419..4defb51b7 100644
--- a/data_descriptors/variables/gigyr.lim.json
+++ b/data_descriptors/variables/gigyr.lim.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.lim.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.limnsw.json b/data_descriptors/variables/gigyr.limnsw.json
index f33013608..b707f8906 100644
--- a/data_descriptors/variables/gigyr.limnsw.json
+++ b/data_descriptors/variables/gigyr.limnsw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.limnsw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.litempbotfl.json b/data_descriptors/variables/gigyr.litempbotfl.json
index f10aa3273..d4d120b84 100644
--- a/data_descriptors/variables/gigyr.litempbotfl.json
+++ b/data_descriptors/variables/gigyr.litempbotfl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.litempbotfl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.litempbotgr.json b/data_descriptors/variables/gigyr.litempbotgr.json
index 6ffa9a995..6d12f522e 100644
--- a/data_descriptors/variables/gigyr.litempbotgr.json
+++ b/data_descriptors/variables/gigyr.litempbotgr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.litempbotgr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.litemptop.json b/data_descriptors/variables/gigyr.litemptop.json
index b20c0d93a..c5daa1cd5 100644
--- a/data_descriptors/variables/gigyr.litemptop.json
+++ b/data_descriptors/variables/gigyr.litemptop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.litemptop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.lithk.json b/data_descriptors/variables/gigyr.lithk.json
index 8342c5b21..0de4b3316 100644
--- a/data_descriptors/variables/gigyr.lithk.json
+++ b/data_descriptors/variables/gigyr.lithk.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.lithk.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.modelcellareai.json b/data_descriptors/variables/gigyr.modelcellareai.json
index 6539c7f60..fdfc28835 100644
--- a/data_descriptors/variables/gigyr.modelcellareai.json
+++ b/data_descriptors/variables/gigyr.modelcellareai.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.modelcellareai.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.orog.json b/data_descriptors/variables/gigyr.orog.json
index 82c216552..aed361363 100644
--- a/data_descriptors/variables/gigyr.orog.json
+++ b/data_descriptors/variables/gigyr.orog.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.orog.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.sftflf.json b/data_descriptors/variables/gigyr.sftflf.json
index 5f3ddb396..51a63b17a 100644
--- a/data_descriptors/variables/gigyr.sftflf.json
+++ b/data_descriptors/variables/gigyr.sftflf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.sftflf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.sftgif.json b/data_descriptors/variables/gigyr.sftgif.json
index 45af834b1..94b348e9a 100644
--- a/data_descriptors/variables/gigyr.sftgif.json
+++ b/data_descriptors/variables/gigyr.sftgif.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.sftgif.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.sftgrf.json b/data_descriptors/variables/gigyr.sftgrf.json
index 1c06deb00..4550ccae3 100644
--- a/data_descriptors/variables/gigyr.sftgrf.json
+++ b/data_descriptors/variables/gigyr.sftgrf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.sftgrf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.snc.json b/data_descriptors/variables/gigyr.snc.json
index b5e5fd761..16fb55211 100644
--- a/data_descriptors/variables/gigyr.snc.json
+++ b/data_descriptors/variables/gigyr.snc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.snc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.strbasemag.json b/data_descriptors/variables/gigyr.strbasemag.json
index 9cd56e73b..6565a2f17 100644
--- a/data_descriptors/variables/gigyr.strbasemag.json
+++ b/data_descriptors/variables/gigyr.strbasemag.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.strbasemag.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.tendacabf.json b/data_descriptors/variables/gigyr.tendacabf.json
index d5fcdf933..978d42a77 100644
--- a/data_descriptors/variables/gigyr.tendacabf.json
+++ b/data_descriptors/variables/gigyr.tendacabf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.tendacabf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.tendlibmassbf.json b/data_descriptors/variables/gigyr.tendlibmassbf.json
index d71cd6c07..de73b0ec8 100644
--- a/data_descriptors/variables/gigyr.tendlibmassbf.json
+++ b/data_descriptors/variables/gigyr.tendlibmassbf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.tendlibmassbf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.tendlicalvf.json b/data_descriptors/variables/gigyr.tendlicalvf.json
index 87f11bb77..a56c6cc22 100644
--- a/data_descriptors/variables/gigyr.tendlicalvf.json
+++ b/data_descriptors/variables/gigyr.tendlicalvf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.tendlicalvf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.topg.json b/data_descriptors/variables/gigyr.topg.json
index b56dd6eeb..e902106ae 100644
--- a/data_descriptors/variables/gigyr.topg.json
+++ b/data_descriptors/variables/gigyr.topg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.topg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.xvelbase.json b/data_descriptors/variables/gigyr.xvelbase.json
index 6fed59e73..7d323649a 100644
--- a/data_descriptors/variables/gigyr.xvelbase.json
+++ b/data_descriptors/variables/gigyr.xvelbase.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.xvelbase.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.xvelmean.json b/data_descriptors/variables/gigyr.xvelmean.json
index 547094723..7295e4b05 100644
--- a/data_descriptors/variables/gigyr.xvelmean.json
+++ b/data_descriptors/variables/gigyr.xvelmean.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.xvelmean.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.xvelsurf.json b/data_descriptors/variables/gigyr.xvelsurf.json
index 19f5dbaaf..6eda35a62 100644
--- a/data_descriptors/variables/gigyr.xvelsurf.json
+++ b/data_descriptors/variables/gigyr.xvelsurf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.xvelsurf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.yvelbase.json b/data_descriptors/variables/gigyr.yvelbase.json
index f007e0f2c..47f0c37be 100644
--- a/data_descriptors/variables/gigyr.yvelbase.json
+++ b/data_descriptors/variables/gigyr.yvelbase.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.yvelbase.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.yvelmean.json b/data_descriptors/variables/gigyr.yvelmean.json
index 3c945f754..fcb9046ae 100644
--- a/data_descriptors/variables/gigyr.yvelmean.json
+++ b/data_descriptors/variables/gigyr.yvelmean.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.yvelmean.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.yvelsurf.json b/data_descriptors/variables/gigyr.yvelsurf.json
index a48a6d02e..462aadef6 100644
--- a/data_descriptors/variables/gigyr.yvelsurf.json
+++ b/data_descriptors/variables/gigyr.yvelsurf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.yvelsurf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.zvelbase.json b/data_descriptors/variables/gigyr.zvelbase.json
index 588b3381f..f2824ca97 100644
--- a/data_descriptors/variables/gigyr.zvelbase.json
+++ b/data_descriptors/variables/gigyr.zvelbase.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.zvelbase.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/gigyr.zvelsurf.json b/data_descriptors/variables/gigyr.zvelsurf.json
index 21b995e76..042394786 100644
--- a/data_descriptors/variables/gigyr.zvelsurf.json
+++ b/data_descriptors/variables/gigyr.zvelsurf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "gigyr.zvelsurf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "gigyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/graph.jsonld b/data_descriptors/variables/graph.jsonld
index b6f98edb0..2711ad957 100644
--- a/data_descriptors/variables/graph.jsonld
+++ b/data_descriptors/variables/graph.jsonld
@@ -4,7 +4,7 @@
   "@vocab": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/",
   "id": "@id",
   "type": "@type",
-  "mip-tables": {
+  "mip_tables": {
     "@reverse": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/tables/variable_entry"
   }
 },
@@ -13,7 +13,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "acmon.flashrate.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "acmon.json",
       "mip-era": "cmip6"
@@ -53,7 +53,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "acmonz.oxloss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "acmonz.json",
       "mip-era": "cmip6"
@@ -93,7 +93,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "acmonz.oxprod.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "acmonz.json",
       "mip-era": "cmip6"
@@ -133,7 +133,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "acmonz.vmrox.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "acmonz.json",
       "mip-era": "cmip6"
@@ -173,7 +173,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae1hr.sfno2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae1hr.json",
       "mip-era": "cmip6"
@@ -213,7 +213,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae1hr.sfo3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae1hr.json",
       "mip-era": "cmip6"
@@ -253,7 +253,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae1hr.sfpm25.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae1hr.json",
       "mip-era": "cmip6"
@@ -293,7 +293,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrpt.rsdscsaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrpt.json",
       "mip-era": "cmip6"
@@ -333,7 +333,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrpt.rsdscsafbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrpt.json",
       "mip-era": "cmip6"
@@ -374,7 +374,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrpt.rsuscsaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrpt.json",
       "mip-era": "cmip6"
@@ -414,7 +414,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrpt.rsuscsafbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrpt.json",
       "mip-era": "cmip6"
@@ -455,7 +455,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrpt.rsutcsaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrpt.json",
       "mip-era": "cmip6"
@@ -495,7 +495,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrptlev.rsdcsaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrptlev.json",
       "mip-era": "cmip6"
@@ -536,7 +536,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrptlev.rsdcsafbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrptlev.json",
       "mip-era": "cmip6"
@@ -578,7 +578,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrptlev.rsucsaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrptlev.json",
       "mip-era": "cmip6"
@@ -619,7 +619,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae3hrptlev.rsucsafbnd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae3hrptlev.json",
       "mip-era": "cmip6"
@@ -661,7 +661,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae6hr.bldep.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae6hr.json",
       "mip-era": "cmip6"
@@ -701,7 +701,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae6hrpt.zg500.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae6hrpt.json",
       "mip-era": "cmip6"
@@ -742,7 +742,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae6hrptlev.bs550aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae6hrptlev.json",
       "mip-era": "cmip6"
@@ -784,7 +784,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "ae6hrptlev.ec550aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "ae6hrptlev.json",
       "mip-era": "cmip6"
@@ -826,7 +826,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.cod.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
@@ -866,7 +866,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.maxpblz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
@@ -906,7 +906,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.minpblz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
@@ -946,7 +946,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.od550aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
@@ -987,7 +987,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.sfo3max.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
@@ -1027,7 +1027,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.toz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
@@ -1067,7 +1067,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.ua10.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
@@ -1108,7 +1108,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.zg10.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
@@ -1149,7 +1149,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.zg100.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
@@ -1190,7 +1190,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aeday.zg500.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aeday.json",
       "mip-era": "cmip6"
@@ -1231,7 +1231,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.abs550aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -1272,7 +1272,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.bldep.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -1312,7 +1312,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.ccn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -1352,7 +1352,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.chepasoa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -1392,7 +1392,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.chepsoa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -1432,7 +1432,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.cltc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -1472,7 +1472,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.cod.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -1512,7 +1512,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.depdust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -1552,7 +1552,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.drybc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -1592,7 +1592,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.drydust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -1632,7 +1632,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.drynh3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -1672,7 +1672,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.drynh4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -1712,7 +1712,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.drynoy.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -1752,7 +1752,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.dryo3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -1792,7 +1792,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.dryoa.json",
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-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -1832,7 +1832,7 @@
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   "id": "aemon.dryso2.json",
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-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -1872,7 +1872,7 @@
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   "id": "aemon.dryso4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -1912,7 +1912,7 @@
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   "id": "aemon.dryss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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@@ -1952,7 +1952,7 @@
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   "id": "aemon.emiaco.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -1992,7 +1992,7 @@
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   "id": "aemon.emianox.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2032,7 +2032,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emiaoa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2072,7 +2072,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emibc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2112,7 +2112,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emibvoc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2152,7 +2152,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.emico.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2192,7 +2192,7 @@
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   "id": "aemon.emidms.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2232,7 +2232,7 @@
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   "id": "aemon.emidust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -2272,7 +2272,7 @@
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   "id": "aemon.emiisop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2312,7 +2312,7 @@
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   "id": "aemon.eminh3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2352,7 +2352,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.eminox.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -2392,7 +2392,7 @@
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   "id": "aemon.emioa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -2432,7 +2432,7 @@
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   "id": "aemon.emiso2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -2472,7 +2472,7 @@
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   "id": "aemon.emiso4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -2512,7 +2512,7 @@
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   "id": "aemon.emiss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -2552,7 +2552,7 @@
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   "id": "aemon.emivoc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2592,7 +2592,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.lwp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -2632,7 +2632,7 @@
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   "id": "aemon.mmrno3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2672,7 +2672,7 @@
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   "id": "aemon.od440aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2712,7 +2712,7 @@
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   "id": "aemon.od550aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -2753,7 +2753,7 @@
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   "id": "aemon.od550aerh2o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2794,7 +2794,7 @@
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   "id": "aemon.od550bb.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2835,7 +2835,7 @@
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   "id": "aemon.od550bc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2876,7 +2876,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2917,7 +2917,7 @@
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   "id": "aemon.od550dust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2958,7 +2958,7 @@
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   "id": "aemon.od550lt1aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -2999,7 +2999,7 @@
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   "id": "aemon.od550no3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -3040,7 +3040,7 @@
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   "id": "aemon.od550oa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -3081,7 +3081,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od550so4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -3122,7 +3122,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.od550soa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "aemon.json",
       "mip-era": "cmip6"
@@ -3163,7 +3163,7 @@
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   "id": "aemon.od550ss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -3204,7 +3204,7 @@
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   "id": "aemon.od870aer.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -3244,7 +3244,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.pod0.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -3284,7 +3284,7 @@
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   "id": "aemon.ptp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -3324,7 +3324,7 @@
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   "id": "aemon.reffclwtop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -3364,7 +3364,7 @@
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   "id": "aemon.rlutaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -3404,7 +3404,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.rlutcsaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -3444,7 +3444,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.rsutaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -3484,7 +3484,7 @@
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   "id": "aemon.rsutcsaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -3524,7 +3524,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.sedustci.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -3564,7 +3564,7 @@
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   "id": "aemon.tatp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -3604,7 +3604,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.tntrl27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -3645,7 +3645,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.tntrs27.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -3686,7 +3686,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.toz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -3726,7 +3726,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.tropoz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -3766,7 +3766,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.ttop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -3806,7 +3806,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.wetbc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -3846,7 +3846,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.wetdust.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -3886,7 +3886,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -3926,7 +3926,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -3966,7 +3966,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -4006,7 +4006,7 @@
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   "id": "aemon.wetoa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -4046,7 +4046,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.wetso2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -4086,7 +4086,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.wetso4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -4126,7 +4126,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.wetss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -4166,7 +4166,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemon.ztp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -4206,7 +4206,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.airmass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -4247,7 +4247,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.aoanh.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -4288,7 +4288,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "aemonlev.c2h2.json",
   "type": "mip-variable",
-  "mip-tables": [
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@@ -4329,7 +4329,7 @@
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@@ -5150,7 +5150,7 @@
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@@ -5273,7 +5273,7 @@
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@@ -5314,7 +5314,7 @@
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@@ -5478,7 +5478,7 @@
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@@ -5519,7 +5519,7 @@
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@@ -5560,7 +5560,7 @@
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@@ -5601,7 +5601,7 @@
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@@ -5642,7 +5642,7 @@
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@@ -5683,7 +5683,7 @@
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@@ -5724,7 +5724,7 @@
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@@ -5765,7 +5765,7 @@
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@@ -5847,7 +5847,7 @@
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@@ -5888,7 +5888,7 @@
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@@ -5929,7 +5929,7 @@
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@@ -5970,7 +5970,7 @@
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@@ -6011,7 +6011,7 @@
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@@ -6052,7 +6052,7 @@
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@@ -6093,7 +6093,7 @@
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@@ -6134,7 +6134,7 @@
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@@ -6175,7 +6175,7 @@
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@@ -6216,7 +6216,7 @@
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@@ -6257,7 +6257,7 @@
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@@ -6298,7 +6298,7 @@
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@@ -6339,7 +6339,7 @@
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@@ -6380,7 +6380,7 @@
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@@ -6421,7 +6421,7 @@
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@@ -6462,7 +6462,7 @@
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@@ -6503,7 +6503,7 @@
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@@ -6543,7 +6543,7 @@
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@@ -6583,7 +6583,7 @@
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@@ -6623,7 +6623,7 @@
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@@ -6663,7 +6663,7 @@
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@@ -6703,7 +6703,7 @@
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@@ -6743,7 +6743,7 @@
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@@ -6783,7 +6783,7 @@
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@@ -6823,7 +6823,7 @@
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@@ -31011,7 +31011,7 @@
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@@ -31257,7 +31257,7 @@
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@@ -31421,7 +31421,7 @@
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@@ -31462,7 +31462,7 @@
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@@ -31544,7 +31544,7 @@
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@@ -36775,7 +36775,7 @@
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@@ -36815,7 +36815,7 @@
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@@ -36855,7 +36855,7 @@
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@@ -36895,7 +36895,7 @@
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@@ -36934,7 +36934,7 @@
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@@ -36974,7 +36974,7 @@
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@@ -37014,7 +37014,7 @@
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@@ -37054,7 +37054,7 @@
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@@ -37094,7 +37094,7 @@
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@@ -37134,7 +37134,7 @@
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@@ -37213,7 +37213,7 @@
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@@ -37252,7 +37252,7 @@
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@@ -37291,7 +37291,7 @@
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+  "mip_tables": [
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@@ -37330,7 +37330,7 @@
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@@ -37411,7 +37411,7 @@
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@@ -37532,7 +37532,7 @@
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+  "mip_tables": [
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@@ -37612,7 +37612,7 @@
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@@ -37652,7 +37652,7 @@
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@@ -37692,7 +37692,7 @@
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@@ -37772,7 +37772,7 @@
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@@ -37813,7 +37813,7 @@
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@@ -37853,7 +37853,7 @@
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@@ -37894,7 +37894,7 @@
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@@ -37976,7 +37976,7 @@
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@@ -38017,7 +38017,7 @@
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-  "mip-tables": [
+  "mip_tables": [
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@@ -38058,7 +38058,7 @@
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@@ -38099,7 +38099,7 @@
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@@ -38139,7 +38139,7 @@
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-  "mip-tables": [
+  "mip_tables": [
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@@ -38180,7 +38180,7 @@
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-  "mip-tables": [
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@@ -38220,7 +38220,7 @@
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-  "mip-tables": [
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@@ -38260,7 +38260,7 @@
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@@ -38341,7 +38341,7 @@
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@@ -38382,7 +38382,7 @@
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@@ -38423,7 +38423,7 @@
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@@ -38463,7 +38463,7 @@
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@@ -38503,7 +38503,7 @@
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@@ -38541,7 +38541,7 @@
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-  "mip-tables": [
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@@ -38579,7 +38579,7 @@
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@@ -38619,7 +38619,7 @@
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@@ -38659,7 +38659,7 @@
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@@ -38699,7 +38699,7 @@
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@@ -38739,7 +38739,7 @@
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@@ -38777,7 +38777,7 @@
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@@ -38815,7 +38815,7 @@
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@@ -38855,7 +38855,7 @@
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-  "mip-tables": [
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@@ -38895,7 +38895,7 @@
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-  "mip-tables": [
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@@ -38935,7 +38935,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
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-  "mip-tables": [
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@@ -38975,7 +38975,7 @@
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-  "mip-tables": [
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@@ -39015,7 +39015,7 @@
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-  "mip-tables": [
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@@ -39055,7 +39055,7 @@
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-  "mip-tables": [
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@@ -39095,7 +39095,7 @@
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-  "mip-tables": [
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@@ -39135,7 +39135,7 @@
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-  "mip-tables": [
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@@ -39175,7 +39175,7 @@
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-  "mip-tables": [
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@@ -46756,7 +46756,7 @@
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@@ -46796,7 +46796,7 @@
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@@ -46835,7 +46835,7 @@
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@@ -46874,7 +46874,7 @@
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@@ -46913,7 +46913,7 @@
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@@ -46953,7 +46953,7 @@
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@@ -46993,7 +46993,7 @@
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@@ -47273,7 +47273,7 @@
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@@ -47675,7 +47675,7 @@
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@@ -47835,7 +47835,7 @@
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@@ -47875,7 +47875,7 @@
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@@ -47955,7 +47955,7 @@
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@@ -47995,7 +47995,7 @@
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-  "mip-tables": [
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@@ -48035,7 +48035,7 @@
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-  "mip-tables": [
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@@ -48075,7 +48075,7 @@
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@@ -48115,7 +48115,7 @@
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@@ -48155,7 +48155,7 @@
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@@ -48195,7 +48195,7 @@
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@@ -48235,7 +48235,7 @@
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@@ -48275,7 +48275,7 @@
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@@ -48316,7 +48316,7 @@
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@@ -48357,7 +48357,7 @@
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@@ -48398,7 +48398,7 @@
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@@ -48438,7 +48438,7 @@
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@@ -48479,7 +48479,7 @@
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@@ -48519,7 +48519,7 @@
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@@ -48559,7 +48559,7 @@
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@@ -48600,7 +48600,7 @@
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@@ -48640,7 +48640,7 @@
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@@ -48681,7 +48681,7 @@
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-  "mip-tables": [
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@@ -48721,7 +48721,7 @@
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@@ -48761,7 +48761,7 @@
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@@ -48801,7 +48801,7 @@
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@@ -48841,7 +48841,7 @@
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@@ -48882,7 +48882,7 @@
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-  "mip-tables": [
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@@ -48922,7 +48922,7 @@
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-  "mip-tables": [
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@@ -48962,7 +48962,7 @@
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-  "mip-tables": [
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@@ -49002,7 +49002,7 @@
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-  "mip-tables": [
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@@ -49042,7 +49042,7 @@
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-  "mip-tables": [
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@@ -49082,7 +49082,7 @@
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@@ -49122,7 +49122,7 @@
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@@ -49162,7 +49162,7 @@
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-  "mip-tables": [
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@@ -49202,7 +49202,7 @@
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@@ -51128,7 +51128,7 @@
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@@ -51168,7 +51168,7 @@
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@@ -51208,7 +51208,7 @@
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@@ -51249,7 +51249,7 @@
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@@ -51289,7 +51289,7 @@
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@@ -51329,7 +51329,7 @@
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@@ -51370,7 +51370,7 @@
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@@ -51411,7 +51411,7 @@
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@@ -51452,7 +51452,7 @@
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@@ -51493,7 +51493,7 @@
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@@ -51534,7 +51534,7 @@
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@@ -51576,7 +51576,7 @@
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@@ -51617,7 +51617,7 @@
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@@ -51657,7 +51657,7 @@
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@@ -51739,7 +51739,7 @@
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@@ -51820,7 +51820,7 @@
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@@ -51901,7 +51901,7 @@
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@@ -51941,7 +51941,7 @@
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@@ -51982,7 +51982,7 @@
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@@ -52023,7 +52023,7 @@
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@@ -52063,7 +52063,7 @@
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@@ -52104,7 +52104,7 @@
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@@ -52145,7 +52145,7 @@
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@@ -52186,7 +52186,7 @@
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@@ -52268,7 +52268,7 @@
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@@ -52308,7 +52308,7 @@
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@@ -52349,7 +52349,7 @@
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@@ -52389,7 +52389,7 @@
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@@ -52429,7 +52429,7 @@
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@@ -52469,7 +52469,7 @@
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@@ -52629,7 +52629,7 @@
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@@ -52669,7 +52669,7 @@
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@@ -52709,7 +52709,7 @@
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@@ -52749,7 +52749,7 @@
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@@ -52789,7 +52789,7 @@
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@@ -52829,7 +52829,7 @@
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@@ -52869,7 +52869,7 @@
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@@ -52909,7 +52909,7 @@
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@@ -52949,7 +52949,7 @@
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@@ -52989,7 +52989,7 @@
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@@ -53029,7 +53029,7 @@
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@@ -53070,7 +53070,7 @@
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@@ -53110,7 +53110,7 @@
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@@ -53150,7 +53150,7 @@
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@@ -53190,7 +53190,7 @@
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@@ -53230,7 +53230,7 @@
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@@ -53350,7 +53350,7 @@
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@@ -53552,7 +53552,7 @@
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@@ -53592,7 +53592,7 @@
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@@ -53633,7 +53633,7 @@
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@@ -53674,7 +53674,7 @@
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@@ -53715,7 +53715,7 @@
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-  "mip-tables": [
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@@ -53755,7 +53755,7 @@
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@@ -53795,7 +53795,7 @@
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@@ -53835,7 +53835,7 @@
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@@ -53875,7 +53875,7 @@
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@@ -53915,7 +53915,7 @@
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-  "mip-tables": [
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@@ -53955,7 +53955,7 @@
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@@ -53996,7 +53996,7 @@
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-  "mip-tables": [
+  "mip_tables": [
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@@ -54036,7 +54036,7 @@
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-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -54076,7 +54076,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
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-  "mip-tables": [
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@@ -54116,7 +54116,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
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@@ -54156,7 +54156,7 @@
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@@ -54196,7 +54196,7 @@
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   "id": "lpmon.residualfrac.json",
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-  "mip-tables": [
+  "mip_tables": [
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@@ -54237,7 +54237,7 @@
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   "id": "lpmon.rgrowth.json",
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-  "mip-tables": [
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@@ -54277,7 +54277,7 @@
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-  "mip-tables": [
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@@ -54317,7 +54317,7 @@
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-  "mip-tables": [
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@@ -54357,7 +54357,7 @@
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@@ -54397,7 +54397,7 @@
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-  "mip-tables": [
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@@ -54437,7 +54437,7 @@
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@@ -54477,7 +54477,7 @@
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@@ -54518,7 +54518,7 @@
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@@ -54558,7 +54558,7 @@
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@@ -54598,7 +54598,7 @@
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@@ -54638,7 +54638,7 @@
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@@ -54679,7 +54679,7 @@
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@@ -54719,7 +54719,7 @@
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@@ -54760,7 +54760,7 @@
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@@ -54800,7 +54800,7 @@
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-  "mip-tables": [
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@@ -54841,7 +54841,7 @@
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@@ -54882,7 +54882,7 @@
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@@ -54924,7 +54924,7 @@
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@@ -54964,7 +54964,7 @@
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-  "mip-tables": [
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@@ -55005,7 +55005,7 @@
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-  "mip-tables": [
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@@ -55046,7 +55046,7 @@
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   "id": "lpmon.treefracbdlevg.json",
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-  "mip-tables": [
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@@ -55087,7 +55087,7 @@
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-  "mip-tables": [
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@@ -55128,7 +55128,7 @@
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-  "mip-tables": [
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@@ -55169,7 +55169,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -55210,7 +55210,7 @@
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   "id": "lpmon.treefracprimever.json",
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -55251,7 +55251,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -55292,7 +55292,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -55333,7 +55333,7 @@
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       "mip-era": "cmip6"
@@ -55374,7 +55374,7 @@
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   "id": "lpmon.tslsilut.json",
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -55415,7 +55415,7 @@
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   "id": "lpmon.tsoilpools.json",
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -55456,7 +55456,7 @@
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   "id": "lpmon.vegfrac.json",
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-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -55497,7 +55497,7 @@
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-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -55537,7 +55537,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.vegheightcrop.json",
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -55577,7 +55577,7 @@
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   "id": "lpmon.vegheightgrass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -55617,7 +55617,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
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-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -55657,7 +55657,7 @@
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   "id": "lpmon.vegheightshrub.json",
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -55697,7 +55697,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -55737,7 +55737,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -55777,7 +55777,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -55817,7 +55817,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.wetlandch4prod.json",
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -55857,7 +55857,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -55898,7 +55898,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.wtd.json",
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -55938,7 +55938,7 @@
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   "id": "lpyr.baresoilfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -55979,7 +55979,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -56020,7 +56020,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -56061,7 +56061,7 @@
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -56102,7 +56102,7 @@
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   "id": "lpyr.grassfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -56143,7 +56143,7 @@
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   "id": "lpyr.residualfrac.json",
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-  "mip-tables": [
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       "mip-era": "cmip6"
@@ -56184,7 +56184,7 @@
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-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -56225,7 +56225,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyr.treefrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -56266,7 +56266,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -56307,7 +56307,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.clitter.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -56347,7 +56347,7 @@
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   "id": "lpyrpt.clitterlut.json",
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-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -56388,7 +56388,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.cproduct.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -56428,7 +56428,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.cproductlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -56469,7 +56469,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.csoil.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -56509,7 +56509,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.csoillut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -56550,7 +56550,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.cveg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -56590,7 +56590,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.cveglut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -56631,7 +56631,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.fraclut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
@@ -56672,7 +56672,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obday.chlos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
@@ -56712,7 +56712,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obday.phycos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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@@ -56752,7 +56752,7 @@
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@@ -59305,7 +59305,7 @@
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@@ -59345,7 +59345,7 @@
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@@ -59385,7 +59385,7 @@
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@@ -59425,7 +59425,7 @@
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@@ -59465,7 +59465,7 @@
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@@ -59505,7 +59505,7 @@
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@@ -59545,7 +59545,7 @@
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@@ -59585,7 +59585,7 @@
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@@ -59625,7 +59625,7 @@
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@@ -59665,7 +59665,7 @@
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@@ -59705,7 +59705,7 @@
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@@ -59745,7 +59745,7 @@
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@@ -59785,7 +59785,7 @@
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@@ -59825,7 +59825,7 @@
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@@ -59865,7 +59865,7 @@
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@@ -60225,7 +60225,7 @@
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@@ -60265,7 +60265,7 @@
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@@ -60345,7 +60345,7 @@
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@@ -60385,7 +60385,7 @@
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@@ -60425,7 +60425,7 @@
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@@ -60465,7 +60465,7 @@
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@@ -60505,7 +60505,7 @@
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@@ -60545,7 +60545,7 @@
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@@ -60585,7 +60585,7 @@
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@@ -60625,7 +60625,7 @@
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@@ -60665,7 +60665,7 @@
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@@ -60705,7 +60705,7 @@
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@@ -60745,7 +60745,7 @@
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@@ -60785,7 +60785,7 @@
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@@ -60826,7 +60826,7 @@
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@@ -60866,7 +60866,7 @@
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@@ -60906,7 +60906,7 @@
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+  "mip_tables": [
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@@ -60946,7 +60946,7 @@
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+  "mip_tables": [
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@@ -60986,7 +60986,7 @@
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@@ -61026,7 +61026,7 @@
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@@ -61066,7 +61066,7 @@
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@@ -61106,7 +61106,7 @@
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+  "mip_tables": [
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@@ -61146,7 +61146,7 @@
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-  "mip-tables": [
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@@ -61186,7 +61186,7 @@
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@@ -61226,7 +61226,7 @@
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@@ -61266,7 +61266,7 @@
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@@ -61306,7 +61306,7 @@
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+  "mip_tables": [
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@@ -61346,7 +61346,7 @@
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-  "mip-tables": [
+  "mip_tables": [
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@@ -61386,7 +61386,7 @@
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-  "mip-tables": [
+  "mip_tables": [
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@@ -61426,7 +61426,7 @@
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-  "mip-tables": [
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@@ -61466,7 +61466,7 @@
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@@ -61507,7 +61507,7 @@
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@@ -61547,7 +61547,7 @@
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-  "mip-tables": [
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@@ -61588,7 +61588,7 @@
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@@ -61629,7 +61629,7 @@
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-  "mip-tables": [
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@@ -61670,7 +61670,7 @@
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@@ -61710,7 +61710,7 @@
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@@ -61750,7 +61750,7 @@
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-  "mip-tables": [
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@@ -61790,7 +61790,7 @@
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-  "mip-tables": [
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@@ -61830,7 +61830,7 @@
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@@ -61870,7 +61870,7 @@
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@@ -61910,7 +61910,7 @@
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@@ -61950,7 +61950,7 @@
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@@ -61990,7 +61990,7 @@
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@@ -62030,7 +62030,7 @@
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@@ -62071,7 +62071,7 @@
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@@ -62112,7 +62112,7 @@
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@@ -62153,7 +62153,7 @@
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@@ -62194,7 +62194,7 @@
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@@ -62235,7 +62235,7 @@
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@@ -62276,7 +62276,7 @@
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@@ -62317,7 +62317,7 @@
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@@ -62358,7 +62358,7 @@
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@@ -62399,7 +62399,7 @@
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@@ -62440,7 +62440,7 @@
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@@ -62481,7 +62481,7 @@
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@@ -62522,7 +62522,7 @@
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@@ -62563,7 +62563,7 @@
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@@ -62604,7 +62604,7 @@
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@@ -62645,7 +62645,7 @@
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@@ -62850,7 +62850,7 @@
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@@ -62932,7 +62932,7 @@
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@@ -62973,7 +62973,7 @@
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@@ -63014,7 +63014,7 @@
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@@ -63055,7 +63055,7 @@
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@@ -63096,7 +63096,7 @@
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@@ -63137,7 +63137,7 @@
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@@ -63178,7 +63178,7 @@
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@@ -63219,7 +63219,7 @@
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@@ -63260,7 +63260,7 @@
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@@ -63342,7 +63342,7 @@
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@@ -63506,7 +63506,7 @@
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@@ -63547,7 +63547,7 @@
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@@ -63588,7 +63588,7 @@
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@@ -63629,7 +63629,7 @@
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@@ -63670,7 +63670,7 @@
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@@ -63711,7 +63711,7 @@
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@@ -63752,7 +63752,7 @@
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@@ -63793,7 +63793,7 @@
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@@ -63834,7 +63834,7 @@
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@@ -63875,7 +63875,7 @@
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@@ -63916,7 +63916,7 @@
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@@ -63957,7 +63957,7 @@
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@@ -63998,7 +63998,7 @@
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@@ -64039,7 +64039,7 @@
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@@ -64080,7 +64080,7 @@
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@@ -64121,7 +64121,7 @@
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@@ -64162,7 +64162,7 @@
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@@ -64203,7 +64203,7 @@
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@@ -64244,7 +64244,7 @@
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@@ -64285,7 +64285,7 @@
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-  "mip-tables": [
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@@ -81764,7 +81764,7 @@
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   "id": "simon.sistrxdtop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "simon.json",
       "mip-era": "cmip6"
@@ -81804,7 +81804,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sistrxubot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "simon.json",
       "mip-era": "cmip6"
@@ -81844,7 +81844,7 @@
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   "id": "simon.sistrydtop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -81884,7 +81884,7 @@
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   "id": "simon.sistryubot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "simon.json",
       "mip-era": "cmip6"
@@ -81924,7 +81924,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sitempbot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -81964,7 +81964,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sitempsnic.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82004,7 +82004,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sitemptop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82044,7 +82044,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sithick.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82085,7 +82085,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sitimefrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82125,7 +82125,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siu.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82165,7 +82165,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siv.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82205,7 +82205,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sivol.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82245,7 +82245,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sivoln.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82283,7 +82283,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sivols.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82321,7 +82321,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sndmassdyn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82361,7 +82361,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sndmassmelt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82401,7 +82401,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sndmasssi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82441,7 +82441,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sndmasssnf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82481,7 +82481,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sndmasssubl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82521,7 +82521,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sndmasswindrif.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82561,7 +82561,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.snmassacrossline.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
@@ -82600,7 +82600,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simonpt.sidivvel.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simonpt.json",
       "mip-era": "cmip6"
@@ -82640,7 +82640,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simonpt.sishevel.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simonpt.json",
       "mip-era": "cmip6"
@@ -82680,7 +82680,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simonpt.sistremax.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simonpt.json",
       "mip-era": "cmip6"
@@ -82720,7 +82720,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simonpt.sistresave.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simonpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/li3hrpt.sbl.json b/data_descriptors/variables/li3hrpt.sbl.json
index 21e1eb8e6..14405affe 100644
--- a/data_descriptors/variables/li3hrpt.sbl.json
+++ b/data_descriptors/variables/li3hrpt.sbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "li3hrpt.sbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "li3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/li6hrpt.snw.json b/data_descriptors/variables/li6hrpt.snw.json
index e47da973c..a11fbf0fb 100644
--- a/data_descriptors/variables/li6hrpt.snw.json
+++ b/data_descriptors/variables/li6hrpt.snw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "li6hrpt.snw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "li6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/liday.agesno.json b/data_descriptors/variables/liday.agesno.json
index 5d66390c4..cccdeb1c9 100644
--- a/data_descriptors/variables/liday.agesno.json
+++ b/data_descriptors/variables/liday.agesno.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "liday.agesno.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "liday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/liday.hfdsn.json b/data_descriptors/variables/liday.hfdsn.json
index 62947e0ea..c39d7b8bc 100644
--- a/data_descriptors/variables/liday.hfdsn.json
+++ b/data_descriptors/variables/liday.hfdsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "liday.hfdsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "liday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/liday.lwsnl.json b/data_descriptors/variables/liday.lwsnl.json
index 059b270d1..872dff3da 100644
--- a/data_descriptors/variables/liday.lwsnl.json
+++ b/data_descriptors/variables/liday.lwsnl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "liday.lwsnl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "liday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/liday.pflw.json b/data_descriptors/variables/liday.pflw.json
index 26adabc38..efb2db2f7 100644
--- a/data_descriptors/variables/liday.pflw.json
+++ b/data_descriptors/variables/liday.pflw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "liday.pflw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "liday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/liday.sbl.json b/data_descriptors/variables/liday.sbl.json
index 6ed9af80b..eb20db45a 100644
--- a/data_descriptors/variables/liday.sbl.json
+++ b/data_descriptors/variables/liday.sbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "liday.sbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "liday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/liday.snc.json b/data_descriptors/variables/liday.snc.json
index 130bd1584..3b013f0a1 100644
--- a/data_descriptors/variables/liday.snc.json
+++ b/data_descriptors/variables/liday.snc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "liday.snc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "liday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/liday.snd.json b/data_descriptors/variables/liday.snd.json
index e4ae10864..5510c43c0 100644
--- a/data_descriptors/variables/liday.snd.json
+++ b/data_descriptors/variables/liday.snd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "liday.snd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "liday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/liday.snm.json b/data_descriptors/variables/liday.snm.json
index a4c5d9975..2d0afab59 100644
--- a/data_descriptors/variables/liday.snm.json
+++ b/data_descriptors/variables/liday.snm.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "liday.snm.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "liday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/liday.snw.json b/data_descriptors/variables/liday.snw.json
index 477d9d105..7690dfea0 100644
--- a/data_descriptors/variables/liday.snw.json
+++ b/data_descriptors/variables/liday.snw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "liday.snw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "liday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/liday.sootsn.json b/data_descriptors/variables/liday.sootsn.json
index 3a2dd51a5..61cdcd870 100644
--- a/data_descriptors/variables/liday.sootsn.json
+++ b/data_descriptors/variables/liday.sootsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "liday.sootsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "liday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/liday.tpf.json b/data_descriptors/variables/liday.tpf.json
index a5855f9e6..199141602 100644
--- a/data_descriptors/variables/liday.tpf.json
+++ b/data_descriptors/variables/liday.tpf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "liday.tpf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "liday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/liday.tsn.json b/data_descriptors/variables/liday.tsn.json
index ec0e41a9c..6e8930c35 100644
--- a/data_descriptors/variables/liday.tsn.json
+++ b/data_descriptors/variables/liday.tsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "liday.tsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "liday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lifx.sftflf.json b/data_descriptors/variables/lifx.sftflf.json
index 4687607e9..e15afe047 100644
--- a/data_descriptors/variables/lifx.sftflf.json
+++ b/data_descriptors/variables/lifx.sftflf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lifx.sftflf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lifx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lifx.sftgrf.json b/data_descriptors/variables/lifx.sftgrf.json
index e274e006b..d3c1f8e4a 100644
--- a/data_descriptors/variables/lifx.sftgrf.json
+++ b/data_descriptors/variables/lifx.sftgrf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lifx.sftgrf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lifx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.acabfis.json b/data_descriptors/variables/limon.acabfis.json
index 04165a748..fea7bcd19 100644
--- a/data_descriptors/variables/limon.acabfis.json
+++ b/data_descriptors/variables/limon.acabfis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.acabfis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.agesno.json b/data_descriptors/variables/limon.agesno.json
index a01801b7b..ddc89f063 100644
--- a/data_descriptors/variables/limon.agesno.json
+++ b/data_descriptors/variables/limon.agesno.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.agesno.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.hfdsn.json b/data_descriptors/variables/limon.hfdsn.json
index 7f784aa41..b18b9b0df 100644
--- a/data_descriptors/variables/limon.hfdsn.json
+++ b/data_descriptors/variables/limon.hfdsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.hfdsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.hflsis.json b/data_descriptors/variables/limon.hflsis.json
index fece65fb3..103490518 100644
--- a/data_descriptors/variables/limon.hflsis.json
+++ b/data_descriptors/variables/limon.hflsis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.hflsis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.hfssis.json b/data_descriptors/variables/limon.hfssis.json
index c8dc31e30..771d418f2 100644
--- a/data_descriptors/variables/limon.hfssis.json
+++ b/data_descriptors/variables/limon.hfssis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.hfssis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.icemis.json b/data_descriptors/variables/limon.icemis.json
index a5fc3eea6..3c9942d16 100644
--- a/data_descriptors/variables/limon.icemis.json
+++ b/data_descriptors/variables/limon.icemis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.icemis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.litemptopis.json b/data_descriptors/variables/limon.litemptopis.json
index a0f76e258..0566fd523 100644
--- a/data_descriptors/variables/limon.litemptopis.json
+++ b/data_descriptors/variables/limon.litemptopis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.litemptopis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.lwsnl.json b/data_descriptors/variables/limon.lwsnl.json
index aa0c95e36..f14794022 100644
--- a/data_descriptors/variables/limon.lwsnl.json
+++ b/data_descriptors/variables/limon.lwsnl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.lwsnl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.mrrois.json b/data_descriptors/variables/limon.mrrois.json
index cc8c70dc4..e58037e12 100644
--- a/data_descriptors/variables/limon.mrrois.json
+++ b/data_descriptors/variables/limon.mrrois.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.mrrois.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.orogis.json b/data_descriptors/variables/limon.orogis.json
index ca15a632d..85c90d1b0 100644
--- a/data_descriptors/variables/limon.orogis.json
+++ b/data_descriptors/variables/limon.orogis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.orogis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.pflw.json b/data_descriptors/variables/limon.pflw.json
index 7ca6e8923..083c9500c 100644
--- a/data_descriptors/variables/limon.pflw.json
+++ b/data_descriptors/variables/limon.pflw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.pflw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.prrais.json b/data_descriptors/variables/limon.prrais.json
index 9082cb79a..f871a6420 100644
--- a/data_descriptors/variables/limon.prrais.json
+++ b/data_descriptors/variables/limon.prrais.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.prrais.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.prsnis.json b/data_descriptors/variables/limon.prsnis.json
index c7843076d..d2fba705a 100644
--- a/data_descriptors/variables/limon.prsnis.json
+++ b/data_descriptors/variables/limon.prsnis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.prsnis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.rldsis.json b/data_descriptors/variables/limon.rldsis.json
index c1d194c06..b26ee768b 100644
--- a/data_descriptors/variables/limon.rldsis.json
+++ b/data_descriptors/variables/limon.rldsis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.rldsis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.rlusis.json b/data_descriptors/variables/limon.rlusis.json
index c3e1e8305..94d8ea080 100644
--- a/data_descriptors/variables/limon.rlusis.json
+++ b/data_descriptors/variables/limon.rlusis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.rlusis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.rsdsis.json b/data_descriptors/variables/limon.rsdsis.json
index e17da59d4..6e2c89adb 100644
--- a/data_descriptors/variables/limon.rsdsis.json
+++ b/data_descriptors/variables/limon.rsdsis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.rsdsis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.rsusis.json b/data_descriptors/variables/limon.rsusis.json
index 4ddf22e23..08cc96317 100644
--- a/data_descriptors/variables/limon.rsusis.json
+++ b/data_descriptors/variables/limon.rsusis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.rsusis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.sbl.json b/data_descriptors/variables/limon.sbl.json
index 417111d28..f84e842ed 100644
--- a/data_descriptors/variables/limon.sbl.json
+++ b/data_descriptors/variables/limon.sbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.sbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.sblis.json b/data_descriptors/variables/limon.sblis.json
index 1d257f81b..d28bdabe6 100644
--- a/data_descriptors/variables/limon.sblis.json
+++ b/data_descriptors/variables/limon.sblis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.sblis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.sftflf.json b/data_descriptors/variables/limon.sftflf.json
index b33bb5cbd..18b8b7231 100644
--- a/data_descriptors/variables/limon.sftflf.json
+++ b/data_descriptors/variables/limon.sftflf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.sftflf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.sftgrf.json b/data_descriptors/variables/limon.sftgrf.json
index 99cd66d8a..4bc0c5651 100644
--- a/data_descriptors/variables/limon.sftgrf.json
+++ b/data_descriptors/variables/limon.sftgrf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.sftgrf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.snc.json b/data_descriptors/variables/limon.snc.json
index 47ff8712f..f9fc05849 100644
--- a/data_descriptors/variables/limon.snc.json
+++ b/data_descriptors/variables/limon.snc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.snc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.sncis.json b/data_descriptors/variables/limon.sncis.json
index 9f6e4d52c..3ce4f9c05 100644
--- a/data_descriptors/variables/limon.sncis.json
+++ b/data_descriptors/variables/limon.sncis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.sncis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.snd.json b/data_descriptors/variables/limon.snd.json
index b33a4ad99..c68e0ea80 100644
--- a/data_descriptors/variables/limon.snd.json
+++ b/data_descriptors/variables/limon.snd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.snd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.snicefreezis.json b/data_descriptors/variables/limon.snicefreezis.json
index 301ed05b1..14a80d660 100644
--- a/data_descriptors/variables/limon.snicefreezis.json
+++ b/data_descriptors/variables/limon.snicefreezis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.snicefreezis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.snicemis.json b/data_descriptors/variables/limon.snicemis.json
index 0436ee821..ef204af44 100644
--- a/data_descriptors/variables/limon.snicemis.json
+++ b/data_descriptors/variables/limon.snicemis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.snicemis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.snm.json b/data_descriptors/variables/limon.snm.json
index e48010510..7fe183a14 100644
--- a/data_descriptors/variables/limon.snm.json
+++ b/data_descriptors/variables/limon.snm.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.snm.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.snmis.json b/data_descriptors/variables/limon.snmis.json
index 9b8d50141..f2dfad137 100644
--- a/data_descriptors/variables/limon.snmis.json
+++ b/data_descriptors/variables/limon.snmis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.snmis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.snw.json b/data_descriptors/variables/limon.snw.json
index f93fc9182..61ed30f90 100644
--- a/data_descriptors/variables/limon.snw.json
+++ b/data_descriptors/variables/limon.snw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.snw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.sootsn.json b/data_descriptors/variables/limon.sootsn.json
index 7e3a38bc6..610f9ed36 100644
--- a/data_descriptors/variables/limon.sootsn.json
+++ b/data_descriptors/variables/limon.sootsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.sootsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.tasis.json b/data_descriptors/variables/limon.tasis.json
index cd35d1271..ac329bc91 100644
--- a/data_descriptors/variables/limon.tasis.json
+++ b/data_descriptors/variables/limon.tasis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.tasis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.tpf.json b/data_descriptors/variables/limon.tpf.json
index fcab9a5ba..674d3fb49 100644
--- a/data_descriptors/variables/limon.tpf.json
+++ b/data_descriptors/variables/limon.tpf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.tpf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.tsis.json b/data_descriptors/variables/limon.tsis.json
index a9cd0bf4f..65053b7fe 100644
--- a/data_descriptors/variables/limon.tsis.json
+++ b/data_descriptors/variables/limon.tsis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.tsis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.tsn.json b/data_descriptors/variables/limon.tsn.json
index ac76def7c..996ec732a 100644
--- a/data_descriptors/variables/limon.tsn.json
+++ b/data_descriptors/variables/limon.tsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.tsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/limon.tsnis.json b/data_descriptors/variables/limon.tsnis.json
index 48885b75b..87a58d011 100644
--- a/data_descriptors/variables/limon.tsnis.json
+++ b/data_descriptors/variables/limon.tsnis.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "limon.tsnis.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "limon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lisubhrptsite.sbl.json b/data_descriptors/variables/lisubhrptsite.sbl.json
index 6a2e4f3a2..27f789912 100644
--- a/data_descriptors/variables/lisubhrptsite.sbl.json
+++ b/data_descriptors/variables/lisubhrptsite.sbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lisubhrptsite.sbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lisubhrptsite.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lp3hr.gpp.json b/data_descriptors/variables/lp3hr.gpp.json
index 943ee5f47..ca57515d1 100644
--- a/data_descriptors/variables/lp3hr.gpp.json
+++ b/data_descriptors/variables/lp3hr.gpp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lp3hr.gpp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lp3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lp3hr.mrro.json b/data_descriptors/variables/lp3hr.mrro.json
index 77372a365..b16947ab8 100644
--- a/data_descriptors/variables/lp3hr.mrro.json
+++ b/data_descriptors/variables/lp3hr.mrro.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lp3hr.mrro.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lp3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lp3hr.ra.json b/data_descriptors/variables/lp3hr.ra.json
index 1aa1e71db..a3e5a9a2f 100644
--- a/data_descriptors/variables/lp3hr.ra.json
+++ b/data_descriptors/variables/lp3hr.ra.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lp3hr.ra.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lp3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lp3hr.rh.json b/data_descriptors/variables/lp3hr.rh.json
index 9286b0dba..a65a039ed 100644
--- a/data_descriptors/variables/lp3hr.rh.json
+++ b/data_descriptors/variables/lp3hr.rh.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lp3hr.rh.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lp3hr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lp3hrpt.mrsos.json b/data_descriptors/variables/lp3hrpt.mrsos.json
index d0ebeaf2e..ad886a84e 100644
--- a/data_descriptors/variables/lp3hrpt.mrsos.json
+++ b/data_descriptors/variables/lp3hrpt.mrsos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lp3hrpt.mrsos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lp3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lp3hrpt.tslsi.json b/data_descriptors/variables/lp3hrpt.tslsi.json
index ac8f57341..19aa6543e 100644
--- a/data_descriptors/variables/lp3hrpt.tslsi.json
+++ b/data_descriptors/variables/lp3hrpt.tslsi.json
@@ -2,7 +2,7 @@
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   "id": "lp3hrpt.tslsi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lp3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lp6hrpt.mrsol.json b/data_descriptors/variables/lp6hrpt.mrsol.json
index 2d608b6c5..ff4d3bc61 100644
--- a/data_descriptors/variables/lp6hrpt.mrsol.json
+++ b/data_descriptors/variables/lp6hrpt.mrsol.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lp6hrpt.mrsol.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lp6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lp6hrpt.mrsos.json b/data_descriptors/variables/lp6hrpt.mrsos.json
index ab5b9f6f3..4d0b943d6 100644
--- a/data_descriptors/variables/lp6hrpt.mrsos.json
+++ b/data_descriptors/variables/lp6hrpt.mrsos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lp6hrpt.mrsos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lp6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lp6hrpt.tsl.json b/data_descriptors/variables/lp6hrpt.tsl.json
index 451e83c07..3944fd94f 100644
--- a/data_descriptors/variables/lp6hrpt.tsl.json
+++ b/data_descriptors/variables/lp6hrpt.tsl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lp6hrpt.tsl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lp6hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.albc.json b/data_descriptors/variables/lpday.albc.json
index 2950c69f5..d0cebee87 100644
--- a/data_descriptors/variables/lpday.albc.json
+++ b/data_descriptors/variables/lpday.albc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.albc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.albsn.json b/data_descriptors/variables/lpday.albsn.json
index 26d8c1ea6..69fd9bd90 100644
--- a/data_descriptors/variables/lpday.albsn.json
+++ b/data_descriptors/variables/lpday.albsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.albsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.ares.json b/data_descriptors/variables/lpday.ares.json
index 4f4115916..7ed384aff 100644
--- a/data_descriptors/variables/lpday.ares.json
+++ b/data_descriptors/variables/lpday.ares.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.ares.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.cnc.json b/data_descriptors/variables/lpday.cnc.json
index 279385f76..6bb352d07 100644
--- a/data_descriptors/variables/lpday.cnc.json
+++ b/data_descriptors/variables/lpday.cnc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.cnc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.cw.json b/data_descriptors/variables/lpday.cw.json
index 10e673ee5..9e3d9fd3e 100644
--- a/data_descriptors/variables/lpday.cw.json
+++ b/data_descriptors/variables/lpday.cw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.cw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.dcw.json b/data_descriptors/variables/lpday.dcw.json
index 5dadb49f5..08d2df5a9 100644
--- a/data_descriptors/variables/lpday.dcw.json
+++ b/data_descriptors/variables/lpday.dcw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.dcw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.dgw.json b/data_descriptors/variables/lpday.dgw.json
index ab6f3c008..3e4085750 100644
--- a/data_descriptors/variables/lpday.dgw.json
+++ b/data_descriptors/variables/lpday.dgw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.dgw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.dmlt.json b/data_descriptors/variables/lpday.dmlt.json
index 99713a07e..c1917b303 100644
--- a/data_descriptors/variables/lpday.dmlt.json
+++ b/data_descriptors/variables/lpday.dmlt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.dmlt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.drivw.json b/data_descriptors/variables/lpday.drivw.json
index 0360e1f73..8ed80ab2f 100644
--- a/data_descriptors/variables/lpday.drivw.json
+++ b/data_descriptors/variables/lpday.drivw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.drivw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.dslw.json b/data_descriptors/variables/lpday.dslw.json
index e7ac276e0..2c826ff01 100644
--- a/data_descriptors/variables/lpday.dslw.json
+++ b/data_descriptors/variables/lpday.dslw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.dslw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.dsn.json b/data_descriptors/variables/lpday.dsn.json
index 2fdf48156..8c1753b1b 100644
--- a/data_descriptors/variables/lpday.dsn.json
+++ b/data_descriptors/variables/lpday.dsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.dsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.dsw.json b/data_descriptors/variables/lpday.dsw.json
index e3881dd3a..339f88066 100644
--- a/data_descriptors/variables/lpday.dsw.json
+++ b/data_descriptors/variables/lpday.dsw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.dsw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.dtes.json b/data_descriptors/variables/lpday.dtes.json
index c69c53359..f4dd33fcf 100644
--- a/data_descriptors/variables/lpday.dtes.json
+++ b/data_descriptors/variables/lpday.dtes.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.dtes.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.dtesn.json b/data_descriptors/variables/lpday.dtesn.json
index 8d711e815..0f3746c8d 100644
--- a/data_descriptors/variables/lpday.dtesn.json
+++ b/data_descriptors/variables/lpday.dtesn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.dtesn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.ec.json b/data_descriptors/variables/lpday.ec.json
index 63948bf5b..22cd94ea7 100644
--- a/data_descriptors/variables/lpday.ec.json
+++ b/data_descriptors/variables/lpday.ec.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.ec.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.eow.json b/data_descriptors/variables/lpday.eow.json
index a406c656f..319e26282 100644
--- a/data_descriptors/variables/lpday.eow.json
+++ b/data_descriptors/variables/lpday.eow.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.eow.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.es.json b/data_descriptors/variables/lpday.es.json
index f729abc1b..7d2bd352a 100644
--- a/data_descriptors/variables/lpday.es.json
+++ b/data_descriptors/variables/lpday.es.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.es.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.esn.json b/data_descriptors/variables/lpday.esn.json
index a760c8941..9c6f2fd4c 100644
--- a/data_descriptors/variables/lpday.esn.json
+++ b/data_descriptors/variables/lpday.esn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.esn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.evspsbl.json b/data_descriptors/variables/lpday.evspsbl.json
index c0bc01004..095028d80 100644
--- a/data_descriptors/variables/lpday.evspsbl.json
+++ b/data_descriptors/variables/lpday.evspsbl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.evspsbl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.evspsblpot.json b/data_descriptors/variables/lpday.evspsblpot.json
index 8b99b6249..31110ef32 100644
--- a/data_descriptors/variables/lpday.evspsblpot.json
+++ b/data_descriptors/variables/lpday.evspsblpot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.evspsblpot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.lai.json b/data_descriptors/variables/lpday.lai.json
index b0a2a624c..6dca6a6b2 100644
--- a/data_descriptors/variables/lpday.lai.json
+++ b/data_descriptors/variables/lpday.lai.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.lai.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.mrfsofr.json b/data_descriptors/variables/lpday.mrfsofr.json
index 5add1c257..6c88fad0f 100644
--- a/data_descriptors/variables/lpday.mrfsofr.json
+++ b/data_descriptors/variables/lpday.mrfsofr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.mrfsofr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.mrlqso.json b/data_descriptors/variables/lpday.mrlqso.json
index 03f2fd6e0..b4add837e 100644
--- a/data_descriptors/variables/lpday.mrlqso.json
+++ b/data_descriptors/variables/lpday.mrlqso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.mrlqso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.mrro.json b/data_descriptors/variables/lpday.mrro.json
index 12de15fbd..892d0937b 100644
--- a/data_descriptors/variables/lpday.mrro.json
+++ b/data_descriptors/variables/lpday.mrro.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.mrro.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.mrrob.json b/data_descriptors/variables/lpday.mrrob.json
index e032197d3..7c866293c 100644
--- a/data_descriptors/variables/lpday.mrrob.json
+++ b/data_descriptors/variables/lpday.mrrob.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.mrrob.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.mrros.json b/data_descriptors/variables/lpday.mrros.json
index c1f63e074..864bc550d 100644
--- a/data_descriptors/variables/lpday.mrros.json
+++ b/data_descriptors/variables/lpday.mrros.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.mrros.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.mrsfl.json b/data_descriptors/variables/lpday.mrsfl.json
index 494e92195..4c6a02664 100644
--- a/data_descriptors/variables/lpday.mrsfl.json
+++ b/data_descriptors/variables/lpday.mrsfl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.mrsfl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.mrsll.json b/data_descriptors/variables/lpday.mrsll.json
index 60d1d48e7..50c2c9678 100644
--- a/data_descriptors/variables/lpday.mrsll.json
+++ b/data_descriptors/variables/lpday.mrsll.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.mrsll.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.mrso.json b/data_descriptors/variables/lpday.mrso.json
index baa69d741..5c4175d6e 100644
--- a/data_descriptors/variables/lpday.mrso.json
+++ b/data_descriptors/variables/lpday.mrso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.mrso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.mrsol.json b/data_descriptors/variables/lpday.mrsol.json
index b0ec927e7..26121055a 100644
--- a/data_descriptors/variables/lpday.mrsol.json
+++ b/data_descriptors/variables/lpday.mrsol.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.mrsol.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.mrsos.json b/data_descriptors/variables/lpday.mrsos.json
index 8a26775fc..3ace5c3eb 100644
--- a/data_descriptors/variables/lpday.mrsos.json
+++ b/data_descriptors/variables/lpday.mrsos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.mrsos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.mrsow.json b/data_descriptors/variables/lpday.mrsow.json
index 1f8c0d6f7..1993037f0 100644
--- a/data_descriptors/variables/lpday.mrsow.json
+++ b/data_descriptors/variables/lpday.mrsow.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.mrsow.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "lpday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.mrtws.json b/data_descriptors/variables/lpday.mrtws.json
index bcf1f85e7..c53a5a067 100644
--- a/data_descriptors/variables/lpday.mrtws.json
+++ b/data_descriptors/variables/lpday.mrtws.json
@@ -2,7 +2,7 @@
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   "id": "lpday.mrtws.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.nudgincsm.json b/data_descriptors/variables/lpday.nudgincsm.json
index 795d930e8..c210e1223 100644
--- a/data_descriptors/variables/lpday.nudgincsm.json
+++ b/data_descriptors/variables/lpday.nudgincsm.json
@@ -2,7 +2,7 @@
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   "id": "lpday.nudgincsm.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.nudgincswe.json b/data_descriptors/variables/lpday.nudgincswe.json
index cc790a692..32f6a41b9 100644
--- a/data_descriptors/variables/lpday.nudgincswe.json
+++ b/data_descriptors/variables/lpday.nudgincswe.json
@@ -2,7 +2,7 @@
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   "id": "lpday.nudgincswe.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.prveg.json b/data_descriptors/variables/lpday.prveg.json
index f5a8bde37..8b984451f 100644
--- a/data_descriptors/variables/lpday.prveg.json
+++ b/data_descriptors/variables/lpday.prveg.json
@@ -2,7 +2,7 @@
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   "id": "lpday.prveg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.qgwr.json b/data_descriptors/variables/lpday.qgwr.json
index 8dd04e64a..1daa5208d 100644
--- a/data_descriptors/variables/lpday.qgwr.json
+++ b/data_descriptors/variables/lpday.qgwr.json
@@ -2,7 +2,7 @@
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   "id": "lpday.qgwr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.rivi.json b/data_descriptors/variables/lpday.rivi.json
index 25bc0316d..5455fc36e 100644
--- a/data_descriptors/variables/lpday.rivi.json
+++ b/data_descriptors/variables/lpday.rivi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.rivi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.rivo.json b/data_descriptors/variables/lpday.rivo.json
index 8ed8c632d..0b5f4dc36 100644
--- a/data_descriptors/variables/lpday.rivo.json
+++ b/data_descriptors/variables/lpday.rivo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.rivo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.rzwc.json b/data_descriptors/variables/lpday.rzwc.json
index 84751facd..d373d77a7 100644
--- a/data_descriptors/variables/lpday.rzwc.json
+++ b/data_descriptors/variables/lpday.rzwc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.rzwc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.sw.json b/data_descriptors/variables/lpday.sw.json
index 514d456a4..d45b8559d 100644
--- a/data_descriptors/variables/lpday.sw.json
+++ b/data_descriptors/variables/lpday.sw.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.sw.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.tcs.json b/data_descriptors/variables/lpday.tcs.json
index 037c3812f..aa9345434 100644
--- a/data_descriptors/variables/lpday.tcs.json
+++ b/data_descriptors/variables/lpday.tcs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.tcs.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.tgs.json b/data_descriptors/variables/lpday.tgs.json
index cb52628d9..0c92d91b1 100644
--- a/data_descriptors/variables/lpday.tgs.json
+++ b/data_descriptors/variables/lpday.tgs.json
@@ -2,7 +2,7 @@
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   "id": "lpday.tgs.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.tran.json b/data_descriptors/variables/lpday.tran.json
index ce7696bbd..7679c3fa2 100644
--- a/data_descriptors/variables/lpday.tran.json
+++ b/data_descriptors/variables/lpday.tran.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpday.tran.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.tsl.json b/data_descriptors/variables/lpday.tsl.json
index 3b2091bf9..559324b08 100644
--- a/data_descriptors/variables/lpday.tsl.json
+++ b/data_descriptors/variables/lpday.tsl.json
@@ -2,7 +2,7 @@
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   "id": "lpday.tsl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.tslsi.json b/data_descriptors/variables/lpday.tslsi.json
index cba05dc84..55bfacb1c 100644
--- a/data_descriptors/variables/lpday.tslsi.json
+++ b/data_descriptors/variables/lpday.tslsi.json
@@ -2,7 +2,7 @@
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   "id": "lpday.tslsi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpday.wtd.json b/data_descriptors/variables/lpday.wtd.json
index 139322de5..fb1eb9528 100644
--- a/data_descriptors/variables/lpday.wtd.json
+++ b/data_descriptors/variables/lpday.wtd.json
@@ -2,7 +2,7 @@
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   "id": "lpday.wtd.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpfx.areacellr.json b/data_descriptors/variables/lpfx.areacellr.json
index d66bfd610..069215226 100644
--- a/data_descriptors/variables/lpfx.areacellr.json
+++ b/data_descriptors/variables/lpfx.areacellr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpfx.areacellr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpfx.clayfrac.json b/data_descriptors/variables/lpfx.clayfrac.json
index 79fe6b7de..416e04ee2 100644
--- a/data_descriptors/variables/lpfx.clayfrac.json
+++ b/data_descriptors/variables/lpfx.clayfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpfx.clayfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpfx.fldcapacity.json b/data_descriptors/variables/lpfx.fldcapacity.json
index 65878a738..19e0d65b3 100644
--- a/data_descriptors/variables/lpfx.fldcapacity.json
+++ b/data_descriptors/variables/lpfx.fldcapacity.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpfx.fldcapacity.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpfx.ksat.json b/data_descriptors/variables/lpfx.ksat.json
index 3babb0d21..4badab22a 100644
--- a/data_descriptors/variables/lpfx.ksat.json
+++ b/data_descriptors/variables/lpfx.ksat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpfx.ksat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpfx.mrsofc.json b/data_descriptors/variables/lpfx.mrsofc.json
index ec2442e9a..41dfe861b 100644
--- a/data_descriptors/variables/lpfx.mrsofc.json
+++ b/data_descriptors/variables/lpfx.mrsofc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpfx.mrsofc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpfx.orog.json b/data_descriptors/variables/lpfx.orog.json
index c63bab8a0..cf292a36d 100644
--- a/data_descriptors/variables/lpfx.orog.json
+++ b/data_descriptors/variables/lpfx.orog.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpfx.orog.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpfx.rootd.json b/data_descriptors/variables/lpfx.rootd.json
index 23f320fc9..cda1f387c 100644
--- a/data_descriptors/variables/lpfx.rootd.json
+++ b/data_descriptors/variables/lpfx.rootd.json
@@ -2,7 +2,7 @@
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   "id": "lpfx.rootd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpfx.rootdsl.json b/data_descriptors/variables/lpfx.rootdsl.json
index 7ce7c5fc1..a3c8fc3d8 100644
--- a/data_descriptors/variables/lpfx.rootdsl.json
+++ b/data_descriptors/variables/lpfx.rootdsl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpfx.rootdsl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpfx.sandfrac.json b/data_descriptors/variables/lpfx.sandfrac.json
index 4aaaa0bcf..8e613e4c1 100644
--- a/data_descriptors/variables/lpfx.sandfrac.json
+++ b/data_descriptors/variables/lpfx.sandfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpfx.sandfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpfx.sftgif.json b/data_descriptors/variables/lpfx.sftgif.json
index 35090ec30..8a90fbeb6 100644
--- a/data_descriptors/variables/lpfx.sftgif.json
+++ b/data_descriptors/variables/lpfx.sftgif.json
@@ -2,7 +2,7 @@
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   "id": "lpfx.sftgif.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpfx.slthick.json b/data_descriptors/variables/lpfx.slthick.json
index 8cc010d52..3a68b4472 100644
--- a/data_descriptors/variables/lpfx.slthick.json
+++ b/data_descriptors/variables/lpfx.slthick.json
@@ -2,7 +2,7 @@
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   "id": "lpfx.slthick.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpfx.vegheight.json b/data_descriptors/variables/lpfx.vegheight.json
index 7cd86dc5a..8c11c517f 100644
--- a/data_descriptors/variables/lpfx.vegheight.json
+++ b/data_descriptors/variables/lpfx.vegheight.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpfx.vegheight.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpfx.wilt.json b/data_descriptors/variables/lpfx.wilt.json
index 62ba3c598..776b7cfc7 100644
--- a/data_descriptors/variables/lpfx.wilt.json
+++ b/data_descriptors/variables/lpfx.wilt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpfx.wilt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.baresoilfrac.json b/data_descriptors/variables/lpmon.baresoilfrac.json
index 918f1f0c8..64c4146d6 100644
--- a/data_descriptors/variables/lpmon.baresoilfrac.json
+++ b/data_descriptors/variables/lpmon.baresoilfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.baresoilfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.burntfractionall.json b/data_descriptors/variables/lpmon.burntfractionall.json
index f58bc5412..0a6b8f982 100644
--- a/data_descriptors/variables/lpmon.burntfractionall.json
+++ b/data_descriptors/variables/lpmon.burntfractionall.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.burntfractionall.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.c13land.json b/data_descriptors/variables/lpmon.c13land.json
index 5c0f3a220..f1a191e5a 100644
--- a/data_descriptors/variables/lpmon.c13land.json
+++ b/data_descriptors/variables/lpmon.c13land.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.c13land.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.c13litter.json b/data_descriptors/variables/lpmon.c13litter.json
index f4540cbe5..e2dc9d9db 100644
--- a/data_descriptors/variables/lpmon.c13litter.json
+++ b/data_descriptors/variables/lpmon.c13litter.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.c13litter.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.c13soil.json b/data_descriptors/variables/lpmon.c13soil.json
index 3016e40ff..b007d94dd 100644
--- a/data_descriptors/variables/lpmon.c13soil.json
+++ b/data_descriptors/variables/lpmon.c13soil.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.c13soil.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.c13veg.json b/data_descriptors/variables/lpmon.c13veg.json
index 5820467d2..af5919688 100644
--- a/data_descriptors/variables/lpmon.c13veg.json
+++ b/data_descriptors/variables/lpmon.c13veg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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diff --git a/data_descriptors/variables/lpmon.c14land.json b/data_descriptors/variables/lpmon.c14land.json
index 6feb1a925..33ce56a0b 100644
--- a/data_descriptors/variables/lpmon.c14land.json
+++ b/data_descriptors/variables/lpmon.c14land.json
@@ -2,7 +2,7 @@
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   "id": "lpmon.c14land.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.c14litter.json b/data_descriptors/variables/lpmon.c14litter.json
index 5df941c1b..0e9e95694 100644
--- a/data_descriptors/variables/lpmon.c14litter.json
+++ b/data_descriptors/variables/lpmon.c14litter.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.c14litter.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.c14soil.json b/data_descriptors/variables/lpmon.c14soil.json
index 8d31b9975..59e060612 100644
--- a/data_descriptors/variables/lpmon.c14soil.json
+++ b/data_descriptors/variables/lpmon.c14soil.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.c14soil.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.c14veg.json b/data_descriptors/variables/lpmon.c14veg.json
index dc9dc7835..b94d3c51c 100644
--- a/data_descriptors/variables/lpmon.c14veg.json
+++ b/data_descriptors/variables/lpmon.c14veg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.c14veg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.c3pftfrac.json b/data_descriptors/variables/lpmon.c3pftfrac.json
index 74c896b55..317a4fe67 100644
--- a/data_descriptors/variables/lpmon.c3pftfrac.json
+++ b/data_descriptors/variables/lpmon.c3pftfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.c3pftfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.c4pftfrac.json b/data_descriptors/variables/lpmon.c4pftfrac.json
index a096d9033..0cbeffda0 100644
--- a/data_descriptors/variables/lpmon.c4pftfrac.json
+++ b/data_descriptors/variables/lpmon.c4pftfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.c4pftfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.ccwd.json b/data_descriptors/variables/lpmon.ccwd.json
index 090c17e4c..4dfc3ece1 100644
--- a/data_descriptors/variables/lpmon.ccwd.json
+++ b/data_descriptors/variables/lpmon.ccwd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.ccwd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.cland.json b/data_descriptors/variables/lpmon.cland.json
index 963029d7a..d60fba59a 100644
--- a/data_descriptors/variables/lpmon.cland.json
+++ b/data_descriptors/variables/lpmon.cland.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.cland.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.cleaf.json b/data_descriptors/variables/lpmon.cleaf.json
index 2e580b6be..5ee94daf8 100644
--- a/data_descriptors/variables/lpmon.cleaf.json
+++ b/data_descriptors/variables/lpmon.cleaf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.cleaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.clitter.json b/data_descriptors/variables/lpmon.clitter.json
index 40e160050..43de5acf2 100644
--- a/data_descriptors/variables/lpmon.clitter.json
+++ b/data_descriptors/variables/lpmon.clitter.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.clitter.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.clitterabove.json b/data_descriptors/variables/lpmon.clitterabove.json
index 9baecba40..20685ef05 100644
--- a/data_descriptors/variables/lpmon.clitterabove.json
+++ b/data_descriptors/variables/lpmon.clitterabove.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.clitterabove.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.clitterbelow.json b/data_descriptors/variables/lpmon.clitterbelow.json
index a5e03b5ee..5bf974713 100644
--- a/data_descriptors/variables/lpmon.clitterbelow.json
+++ b/data_descriptors/variables/lpmon.clitterbelow.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.clitterbelow.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.clittercwd.json b/data_descriptors/variables/lpmon.clittercwd.json
index 9638254cf..835ab86b5 100644
--- a/data_descriptors/variables/lpmon.clittercwd.json
+++ b/data_descriptors/variables/lpmon.clittercwd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.clittercwd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.clittergrass.json b/data_descriptors/variables/lpmon.clittergrass.json
index f8a7c7ccb..f8790e874 100644
--- a/data_descriptors/variables/lpmon.clittergrass.json
+++ b/data_descriptors/variables/lpmon.clittergrass.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.clittergrass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.clittershrub.json b/data_descriptors/variables/lpmon.clittershrub.json
index e9b029888..d8d3e7e86 100644
--- a/data_descriptors/variables/lpmon.clittershrub.json
+++ b/data_descriptors/variables/lpmon.clittershrub.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.clittershrub.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.clittersubsurf.json b/data_descriptors/variables/lpmon.clittersubsurf.json
index a6e9a4f44..960f24dc6 100644
--- a/data_descriptors/variables/lpmon.clittersubsurf.json
+++ b/data_descriptors/variables/lpmon.clittersubsurf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.clittersubsurf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.clittersurf.json b/data_descriptors/variables/lpmon.clittersurf.json
index 4c42de374..b0b2f51cb 100644
--- a/data_descriptors/variables/lpmon.clittersurf.json
+++ b/data_descriptors/variables/lpmon.clittersurf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.clittersurf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.clittertree.json b/data_descriptors/variables/lpmon.clittertree.json
index 1d6274d45..36f6851ba 100644
--- a/data_descriptors/variables/lpmon.clittertree.json
+++ b/data_descriptors/variables/lpmon.clittertree.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.clittertree.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.cmisc.json b/data_descriptors/variables/lpmon.cmisc.json
index ca6e3d900..22af5a3b1 100644
--- a/data_descriptors/variables/lpmon.cmisc.json
+++ b/data_descriptors/variables/lpmon.cmisc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.cmisc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.cother.json b/data_descriptors/variables/lpmon.cother.json
index 9b168fbe7..6f3ba6890 100644
--- a/data_descriptors/variables/lpmon.cother.json
+++ b/data_descriptors/variables/lpmon.cother.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.cother.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.cproduct.json b/data_descriptors/variables/lpmon.cproduct.json
index ed1a9c4b8..a9e0d5802 100644
--- a/data_descriptors/variables/lpmon.cproduct.json
+++ b/data_descriptors/variables/lpmon.cproduct.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.cproduct.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.croot.json b/data_descriptors/variables/lpmon.croot.json
index a4c18291f..f43922479 100644
--- a/data_descriptors/variables/lpmon.croot.json
+++ b/data_descriptors/variables/lpmon.croot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.croot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.cropfrac.json b/data_descriptors/variables/lpmon.cropfrac.json
index 6754e3165..b55d30bac 100644
--- a/data_descriptors/variables/lpmon.cropfrac.json
+++ b/data_descriptors/variables/lpmon.cropfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.cropfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.cropfracc3.json b/data_descriptors/variables/lpmon.cropfracc3.json
index 83877ac97..e57062efc 100644
--- a/data_descriptors/variables/lpmon.cropfracc3.json
+++ b/data_descriptors/variables/lpmon.cropfracc3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.cropfracc3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.cropfracc4.json b/data_descriptors/variables/lpmon.cropfracc4.json
index bc7291978..dd22ea613 100644
--- a/data_descriptors/variables/lpmon.cropfracc4.json
+++ b/data_descriptors/variables/lpmon.cropfracc4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.cropfracc4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.csoil.json b/data_descriptors/variables/lpmon.csoil.json
index 1f7edeffb..26214c443 100644
--- a/data_descriptors/variables/lpmon.csoil.json
+++ b/data_descriptors/variables/lpmon.csoil.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.csoil.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.csoilabove1m.json b/data_descriptors/variables/lpmon.csoilabove1m.json
index 645ccd6fb..55a67bc98 100644
--- a/data_descriptors/variables/lpmon.csoilabove1m.json
+++ b/data_descriptors/variables/lpmon.csoilabove1m.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.csoilabove1m.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.csoilfast.json b/data_descriptors/variables/lpmon.csoilfast.json
index ce4db36a1..effab0021 100644
--- a/data_descriptors/variables/lpmon.csoilfast.json
+++ b/data_descriptors/variables/lpmon.csoilfast.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.csoilfast.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.csoilgrass.json b/data_descriptors/variables/lpmon.csoilgrass.json
index 51389a83e..8a7bf2bf9 100644
--- a/data_descriptors/variables/lpmon.csoilgrass.json
+++ b/data_descriptors/variables/lpmon.csoilgrass.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.csoilgrass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.csoillevels.json b/data_descriptors/variables/lpmon.csoillevels.json
index 6f62fb19e..976140f13 100644
--- a/data_descriptors/variables/lpmon.csoillevels.json
+++ b/data_descriptors/variables/lpmon.csoillevels.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.csoillevels.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.csoilmedium.json b/data_descriptors/variables/lpmon.csoilmedium.json
index e64ad95c0..993fca1df 100644
--- a/data_descriptors/variables/lpmon.csoilmedium.json
+++ b/data_descriptors/variables/lpmon.csoilmedium.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.csoilmedium.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.csoilpools.json b/data_descriptors/variables/lpmon.csoilpools.json
index 885db6b40..2fc9d785a 100644
--- a/data_descriptors/variables/lpmon.csoilpools.json
+++ b/data_descriptors/variables/lpmon.csoilpools.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.csoilpools.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.csoilshrub.json b/data_descriptors/variables/lpmon.csoilshrub.json
index 39da9f19c..171ae4310 100644
--- a/data_descriptors/variables/lpmon.csoilshrub.json
+++ b/data_descriptors/variables/lpmon.csoilshrub.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.csoilshrub.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.csoilslow.json b/data_descriptors/variables/lpmon.csoilslow.json
index 807454fcb..a3a4b6437 100644
--- a/data_descriptors/variables/lpmon.csoilslow.json
+++ b/data_descriptors/variables/lpmon.csoilslow.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.csoilslow.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.csoiltree.json b/data_descriptors/variables/lpmon.csoiltree.json
index a5f91bc93..b9053e275 100644
--- a/data_descriptors/variables/lpmon.csoiltree.json
+++ b/data_descriptors/variables/lpmon.csoiltree.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.csoiltree.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.cstem.json b/data_descriptors/variables/lpmon.cstem.json
index 0c558a136..8678cd05f 100644
--- a/data_descriptors/variables/lpmon.cstem.json
+++ b/data_descriptors/variables/lpmon.cstem.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.cstem.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.ctotfirelut.json b/data_descriptors/variables/lpmon.ctotfirelut.json
index 40a7e6363..95b76f42f 100644
--- a/data_descriptors/variables/lpmon.ctotfirelut.json
+++ b/data_descriptors/variables/lpmon.ctotfirelut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.ctotfirelut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.cveg.json b/data_descriptors/variables/lpmon.cveg.json
index 17a8c9fea..07c0341f7 100644
--- a/data_descriptors/variables/lpmon.cveg.json
+++ b/data_descriptors/variables/lpmon.cveg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.cveg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.cveggrass.json b/data_descriptors/variables/lpmon.cveggrass.json
index 5bba73a14..241b48542 100644
--- a/data_descriptors/variables/lpmon.cveggrass.json
+++ b/data_descriptors/variables/lpmon.cveggrass.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.cveggrass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.cvegshrub.json b/data_descriptors/variables/lpmon.cvegshrub.json
index aac33920f..b5f1a003d 100644
--- a/data_descriptors/variables/lpmon.cvegshrub.json
+++ b/data_descriptors/variables/lpmon.cvegshrub.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.cvegshrub.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.cvegtree.json b/data_descriptors/variables/lpmon.cvegtree.json
index 821bb7978..3de80198d 100644
--- a/data_descriptors/variables/lpmon.cvegtree.json
+++ b/data_descriptors/variables/lpmon.cvegtree.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.cvegtree.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.cwood.json b/data_descriptors/variables/lpmon.cwood.json
index 170c8b898..592d36af4 100644
--- a/data_descriptors/variables/lpmon.cwood.json
+++ b/data_descriptors/variables/lpmon.cwood.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.cwood.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.evspsblpot.json b/data_descriptors/variables/lpmon.evspsblpot.json
index b7a9b34da..994403183 100644
--- a/data_descriptors/variables/lpmon.evspsblpot.json
+++ b/data_descriptors/variables/lpmon.evspsblpot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.evspsblpot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.evspsblsoi.json b/data_descriptors/variables/lpmon.evspsblsoi.json
index 5f5214a10..1fe3c5205 100644
--- a/data_descriptors/variables/lpmon.evspsblsoi.json
+++ b/data_descriptors/variables/lpmon.evspsblsoi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.evspsblsoi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.evspsblveg.json b/data_descriptors/variables/lpmon.evspsblveg.json
index b78366e5d..4447ff4d9 100644
--- a/data_descriptors/variables/lpmon.evspsblveg.json
+++ b/data_descriptors/variables/lpmon.evspsblveg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.evspsblveg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fahlut.json b/data_descriptors/variables/lpmon.fahlut.json
index 2465df7db..bab96ec01 100644
--- a/data_descriptors/variables/lpmon.fahlut.json
+++ b/data_descriptors/variables/lpmon.fahlut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fahlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fanthdisturb.json b/data_descriptors/variables/lpmon.fanthdisturb.json
index fe15ddd9d..84de42e79 100644
--- a/data_descriptors/variables/lpmon.fanthdisturb.json
+++ b/data_descriptors/variables/lpmon.fanthdisturb.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fanthdisturb.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fbnf.json b/data_descriptors/variables/lpmon.fbnf.json
index 69099d58d..70a64465e 100644
--- a/data_descriptors/variables/lpmon.fbnf.json
+++ b/data_descriptors/variables/lpmon.fbnf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fbnf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fclandtoocean.json b/data_descriptors/variables/lpmon.fclandtoocean.json
index 0bf943510..c471ed560 100644
--- a/data_descriptors/variables/lpmon.fclandtoocean.json
+++ b/data_descriptors/variables/lpmon.fclandtoocean.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fclandtoocean.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fdeforesttoatmos.json b/data_descriptors/variables/lpmon.fdeforesttoatmos.json
index dacce5ca2..29db2bb85 100644
--- a/data_descriptors/variables/lpmon.fdeforesttoatmos.json
+++ b/data_descriptors/variables/lpmon.fdeforesttoatmos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fdeforesttoatmos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fdeforesttoproduct.json b/data_descriptors/variables/lpmon.fdeforesttoproduct.json
index fcb85e9b1..5650fc2b8 100644
--- a/data_descriptors/variables/lpmon.fdeforesttoproduct.json
+++ b/data_descriptors/variables/lpmon.fdeforesttoproduct.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fdeforesttoproduct.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.ffire.json b/data_descriptors/variables/lpmon.ffire.json
index 6e70c5836..165def363 100644
--- a/data_descriptors/variables/lpmon.ffire.json
+++ b/data_descriptors/variables/lpmon.ffire.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.ffire.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.ffireall.json b/data_descriptors/variables/lpmon.ffireall.json
index c9f3d19b5..1091c7952 100644
--- a/data_descriptors/variables/lpmon.ffireall.json
+++ b/data_descriptors/variables/lpmon.ffireall.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.ffireall.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.ffirenat.json b/data_descriptors/variables/lpmon.ffirenat.json
index f29d6850f..fc356f20d 100644
--- a/data_descriptors/variables/lpmon.ffirenat.json
+++ b/data_descriptors/variables/lpmon.ffirenat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.ffirenat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fgrazing.json b/data_descriptors/variables/lpmon.fgrazing.json
index 1129e70e8..12fabfffc 100644
--- a/data_descriptors/variables/lpmon.fgrazing.json
+++ b/data_descriptors/variables/lpmon.fgrazing.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fgrazing.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fharvest.json b/data_descriptors/variables/lpmon.fharvest.json
index 690c852d9..9c60c4a96 100644
--- a/data_descriptors/variables/lpmon.fharvest.json
+++ b/data_descriptors/variables/lpmon.fharvest.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fharvest.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fharvesttoatmos.json b/data_descriptors/variables/lpmon.fharvesttoatmos.json
index 8af825b6e..ad88165fd 100644
--- a/data_descriptors/variables/lpmon.fharvesttoatmos.json
+++ b/data_descriptors/variables/lpmon.fharvesttoatmos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fharvesttoatmos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fharvesttoproduct.json b/data_descriptors/variables/lpmon.fharvesttoproduct.json
index 6da9696e5..a045cc035 100644
--- a/data_descriptors/variables/lpmon.fharvesttoproduct.json
+++ b/data_descriptors/variables/lpmon.fharvesttoproduct.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fharvesttoproduct.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.flitterfire.json b/data_descriptors/variables/lpmon.flitterfire.json
index d89cddc15..4b742b1ec 100644
--- a/data_descriptors/variables/lpmon.flitterfire.json
+++ b/data_descriptors/variables/lpmon.flitterfire.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.flitterfire.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.flittersoil.json b/data_descriptors/variables/lpmon.flittersoil.json
index da3779972..c495aba78 100644
--- a/data_descriptors/variables/lpmon.flittersoil.json
+++ b/data_descriptors/variables/lpmon.flittersoil.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.flittersoil.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fluc.json b/data_descriptors/variables/lpmon.fluc.json
index d735bf74a..b2a1fe3e6 100644
--- a/data_descriptors/variables/lpmon.fluc.json
+++ b/data_descriptors/variables/lpmon.fluc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fluc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.flulccatmlut.json b/data_descriptors/variables/lpmon.flulccatmlut.json
index e4ff81932..b9d309c7b 100644
--- a/data_descriptors/variables/lpmon.flulccatmlut.json
+++ b/data_descriptors/variables/lpmon.flulccatmlut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.flulccatmlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.flulccproductlut.json b/data_descriptors/variables/lpmon.flulccproductlut.json
index 5d95e7843..4c4394d47 100644
--- a/data_descriptors/variables/lpmon.flulccproductlut.json
+++ b/data_descriptors/variables/lpmon.flulccproductlut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.flulccproductlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.flulccresiduelut.json b/data_descriptors/variables/lpmon.flulccresiduelut.json
index 10be51163..c62eee62b 100644
--- a/data_descriptors/variables/lpmon.flulccresiduelut.json
+++ b/data_descriptors/variables/lpmon.flulccresiduelut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.flulccresiduelut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fn2o.json b/data_descriptors/variables/lpmon.fn2o.json
index 82dd3552c..bac3b0db5 100644
--- a/data_descriptors/variables/lpmon.fn2o.json
+++ b/data_descriptors/variables/lpmon.fn2o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fn2o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fnanthdisturb.json b/data_descriptors/variables/lpmon.fnanthdisturb.json
index 946c39c32..21c094831 100644
--- a/data_descriptors/variables/lpmon.fnanthdisturb.json
+++ b/data_descriptors/variables/lpmon.fnanthdisturb.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fnanthdisturb.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fndep.json b/data_descriptors/variables/lpmon.fndep.json
index 3ba061b9b..4a6a0117f 100644
--- a/data_descriptors/variables/lpmon.fndep.json
+++ b/data_descriptors/variables/lpmon.fndep.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fndep.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fnfert.json b/data_descriptors/variables/lpmon.fnfert.json
index 60bfe6552..e9b6f363e 100644
--- a/data_descriptors/variables/lpmon.fnfert.json
+++ b/data_descriptors/variables/lpmon.fnfert.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fnfert.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fngas.json b/data_descriptors/variables/lpmon.fngas.json
index 3257e1260..7800a6af6 100644
--- a/data_descriptors/variables/lpmon.fngas.json
+++ b/data_descriptors/variables/lpmon.fngas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fngas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fngasfire.json b/data_descriptors/variables/lpmon.fngasfire.json
index 1cb884466..d6670a05a 100644
--- a/data_descriptors/variables/lpmon.fngasfire.json
+++ b/data_descriptors/variables/lpmon.fngasfire.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fngasfire.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fngasnonfire.json b/data_descriptors/variables/lpmon.fngasnonfire.json
index 8fc0e872c..f7d2952c6 100644
--- a/data_descriptors/variables/lpmon.fngasnonfire.json
+++ b/data_descriptors/variables/lpmon.fngasnonfire.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fngasnonfire.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fnlandtoocean.json b/data_descriptors/variables/lpmon.fnlandtoocean.json
index 3a856e311..73fd14bd2 100644
--- a/data_descriptors/variables/lpmon.fnlandtoocean.json
+++ b/data_descriptors/variables/lpmon.fnlandtoocean.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fnlandtoocean.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fnleach.json b/data_descriptors/variables/lpmon.fnleach.json
index 1ff0d95ce..debf78380 100644
--- a/data_descriptors/variables/lpmon.fnleach.json
+++ b/data_descriptors/variables/lpmon.fnleach.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fnleach.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fnlittersoil.json b/data_descriptors/variables/lpmon.fnlittersoil.json
index 776ad4dc1..56d428baa 100644
--- a/data_descriptors/variables/lpmon.fnlittersoil.json
+++ b/data_descriptors/variables/lpmon.fnlittersoil.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fnlittersoil.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fnloss.json b/data_descriptors/variables/lpmon.fnloss.json
index 451a4a3fe..27877348f 100644
--- a/data_descriptors/variables/lpmon.fnloss.json
+++ b/data_descriptors/variables/lpmon.fnloss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fnloss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fnnetmin.json b/data_descriptors/variables/lpmon.fnnetmin.json
index 462ff0f2a..86274793f 100644
--- a/data_descriptors/variables/lpmon.fnnetmin.json
+++ b/data_descriptors/variables/lpmon.fnnetmin.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fnnetmin.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fnox.json b/data_descriptors/variables/lpmon.fnox.json
index 6d920f14e..8f9dccec7 100644
--- a/data_descriptors/variables/lpmon.fnox.json
+++ b/data_descriptors/variables/lpmon.fnox.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fnox.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fnproduct.json b/data_descriptors/variables/lpmon.fnproduct.json
index 19460e976..01387bea9 100644
--- a/data_descriptors/variables/lpmon.fnproduct.json
+++ b/data_descriptors/variables/lpmon.fnproduct.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fnproduct.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fnup.json b/data_descriptors/variables/lpmon.fnup.json
index 99e332494..898d8c459 100644
--- a/data_descriptors/variables/lpmon.fnup.json
+++ b/data_descriptors/variables/lpmon.fnup.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fnup.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fnveglitter.json b/data_descriptors/variables/lpmon.fnveglitter.json
index 84a7d4260..090f8648c 100644
--- a/data_descriptors/variables/lpmon.fnveglitter.json
+++ b/data_descriptors/variables/lpmon.fnveglitter.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fnveglitter.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fnvegsoil.json b/data_descriptors/variables/lpmon.fnvegsoil.json
index aeb8db5ae..fcfd7d7ca 100644
--- a/data_descriptors/variables/lpmon.fnvegsoil.json
+++ b/data_descriptors/variables/lpmon.fnvegsoil.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fnvegsoil.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fproductdecomp.json b/data_descriptors/variables/lpmon.fproductdecomp.json
index 9ebdc8b9b..a93eda58e 100644
--- a/data_descriptors/variables/lpmon.fproductdecomp.json
+++ b/data_descriptors/variables/lpmon.fproductdecomp.json
@@ -2,7 +2,7 @@
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   "id": "lpmon.fproductdecomp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fproductdecomplut.json b/data_descriptors/variables/lpmon.fproductdecomplut.json
index 45e0c72e2..ea2fe0214 100644
--- a/data_descriptors/variables/lpmon.fproductdecomplut.json
+++ b/data_descriptors/variables/lpmon.fproductdecomplut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fproductdecomplut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fraclut.json b/data_descriptors/variables/lpmon.fraclut.json
index 60f786782..eee8d8a1b 100644
--- a/data_descriptors/variables/lpmon.fraclut.json
+++ b/data_descriptors/variables/lpmon.fraclut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fraclut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fvegfire.json b/data_descriptors/variables/lpmon.fvegfire.json
index 35801cf9d..82826676a 100644
--- a/data_descriptors/variables/lpmon.fvegfire.json
+++ b/data_descriptors/variables/lpmon.fvegfire.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fvegfire.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fveglitter.json b/data_descriptors/variables/lpmon.fveglitter.json
index 700c85656..39383c824 100644
--- a/data_descriptors/variables/lpmon.fveglitter.json
+++ b/data_descriptors/variables/lpmon.fveglitter.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fveglitter.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fveglittermortality.json b/data_descriptors/variables/lpmon.fveglittermortality.json
index 91d42d7e0..207272dca 100644
--- a/data_descriptors/variables/lpmon.fveglittermortality.json
+++ b/data_descriptors/variables/lpmon.fveglittermortality.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fveglittermortality.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fveglittersenescence.json b/data_descriptors/variables/lpmon.fveglittersenescence.json
index 7c7b309f3..e2cf6cc00 100644
--- a/data_descriptors/variables/lpmon.fveglittersenescence.json
+++ b/data_descriptors/variables/lpmon.fveglittersenescence.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fveglittersenescence.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fvegsoil.json b/data_descriptors/variables/lpmon.fvegsoil.json
index 7c2d87b27..d9234bd98 100644
--- a/data_descriptors/variables/lpmon.fvegsoil.json
+++ b/data_descriptors/variables/lpmon.fvegsoil.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fvegsoil.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fvegsoilmortality.json b/data_descriptors/variables/lpmon.fvegsoilmortality.json
index 5dd482bda..840d6a153 100644
--- a/data_descriptors/variables/lpmon.fvegsoilmortality.json
+++ b/data_descriptors/variables/lpmon.fvegsoilmortality.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fvegsoilmortality.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.fvegsoilsenescence.json b/data_descriptors/variables/lpmon.fvegsoilsenescence.json
index bd54ff6d9..69c170758 100644
--- a/data_descriptors/variables/lpmon.fvegsoilsenescence.json
+++ b/data_descriptors/variables/lpmon.fvegsoilsenescence.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.fvegsoilsenescence.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.gpp.json b/data_descriptors/variables/lpmon.gpp.json
index 6b66b1fa0..91369f451 100644
--- a/data_descriptors/variables/lpmon.gpp.json
+++ b/data_descriptors/variables/lpmon.gpp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.gpp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.gppc13.json b/data_descriptors/variables/lpmon.gppc13.json
index 49dd26af6..f5903694a 100644
--- a/data_descriptors/variables/lpmon.gppc13.json
+++ b/data_descriptors/variables/lpmon.gppc13.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.gppc13.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.gppc14.json b/data_descriptors/variables/lpmon.gppc14.json
index 800183c9b..0f57892f3 100644
--- a/data_descriptors/variables/lpmon.gppc14.json
+++ b/data_descriptors/variables/lpmon.gppc14.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.gppc14.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.gppgrass.json b/data_descriptors/variables/lpmon.gppgrass.json
index fe0b8de6b..9d8d15ddf 100644
--- a/data_descriptors/variables/lpmon.gppgrass.json
+++ b/data_descriptors/variables/lpmon.gppgrass.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.gppgrass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.gpplut.json b/data_descriptors/variables/lpmon.gpplut.json
index 0f6a17f5e..9685f7842 100644
--- a/data_descriptors/variables/lpmon.gpplut.json
+++ b/data_descriptors/variables/lpmon.gpplut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.gpplut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.gppshrub.json b/data_descriptors/variables/lpmon.gppshrub.json
index 1ff889c8e..8c1bdb7c8 100644
--- a/data_descriptors/variables/lpmon.gppshrub.json
+++ b/data_descriptors/variables/lpmon.gppshrub.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.gppshrub.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.gpptree.json b/data_descriptors/variables/lpmon.gpptree.json
index bc7234029..bcdc2c8e5 100644
--- a/data_descriptors/variables/lpmon.gpptree.json
+++ b/data_descriptors/variables/lpmon.gpptree.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.gpptree.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.grassfrac.json b/data_descriptors/variables/lpmon.grassfrac.json
index 907ed856f..de1d97549 100644
--- a/data_descriptors/variables/lpmon.grassfrac.json
+++ b/data_descriptors/variables/lpmon.grassfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.grassfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.grassfracc3.json b/data_descriptors/variables/lpmon.grassfracc3.json
index 362d24c8a..6bf1ed031 100644
--- a/data_descriptors/variables/lpmon.grassfracc3.json
+++ b/data_descriptors/variables/lpmon.grassfracc3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.grassfracc3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.grassfracc4.json b/data_descriptors/variables/lpmon.grassfracc4.json
index 22d34f751..91a866e60 100644
--- a/data_descriptors/variables/lpmon.grassfracc4.json
+++ b/data_descriptors/variables/lpmon.grassfracc4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.grassfracc4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.hflslut.json b/data_descriptors/variables/lpmon.hflslut.json
index 437614f18..e5c21433b 100644
--- a/data_descriptors/variables/lpmon.hflslut.json
+++ b/data_descriptors/variables/lpmon.hflslut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.hflslut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.hfsslut.json b/data_descriptors/variables/lpmon.hfsslut.json
index 96961e0e3..63f5aa1c5 100644
--- a/data_descriptors/variables/lpmon.hfsslut.json
+++ b/data_descriptors/variables/lpmon.hfsslut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.hfsslut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.husslut.json b/data_descriptors/variables/lpmon.husslut.json
index 7bcde1d88..96f4d3f53 100644
--- a/data_descriptors/variables/lpmon.husslut.json
+++ b/data_descriptors/variables/lpmon.husslut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.husslut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.irrlut.json b/data_descriptors/variables/lpmon.irrlut.json
index 46a482009..54ce04d18 100644
--- a/data_descriptors/variables/lpmon.irrlut.json
+++ b/data_descriptors/variables/lpmon.irrlut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.irrlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.lai.json b/data_descriptors/variables/lpmon.lai.json
index 1fc8ec5fe..0e99ffb2e 100644
--- a/data_descriptors/variables/lpmon.lai.json
+++ b/data_descriptors/variables/lpmon.lai.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.lai.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.lailut.json b/data_descriptors/variables/lpmon.lailut.json
index 3f39369ec..01c95623c 100644
--- a/data_descriptors/variables/lpmon.lailut.json
+++ b/data_descriptors/variables/lpmon.lailut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.lailut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.landcoverfrac.json b/data_descriptors/variables/lpmon.landcoverfrac.json
index 05e3186d2..375d277aa 100644
--- a/data_descriptors/variables/lpmon.landcoverfrac.json
+++ b/data_descriptors/variables/lpmon.landcoverfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.landcoverfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.mrfso.json b/data_descriptors/variables/lpmon.mrfso.json
index 4b4125bd0..a593b9760 100644
--- a/data_descriptors/variables/lpmon.mrfso.json
+++ b/data_descriptors/variables/lpmon.mrfso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.mrfso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.mrlso.json b/data_descriptors/variables/lpmon.mrlso.json
index 98bde4c4e..82139b4b5 100644
--- a/data_descriptors/variables/lpmon.mrlso.json
+++ b/data_descriptors/variables/lpmon.mrlso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.mrlso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.mrro.json b/data_descriptors/variables/lpmon.mrro.json
index 89ac4d385..3e0594797 100644
--- a/data_descriptors/variables/lpmon.mrro.json
+++ b/data_descriptors/variables/lpmon.mrro.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.mrro.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.mrrolut.json b/data_descriptors/variables/lpmon.mrrolut.json
index 71b3580f0..b66fc4d48 100644
--- a/data_descriptors/variables/lpmon.mrrolut.json
+++ b/data_descriptors/variables/lpmon.mrrolut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.mrrolut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.mrros.json b/data_descriptors/variables/lpmon.mrros.json
index 3ebbea427..b783217a9 100644
--- a/data_descriptors/variables/lpmon.mrros.json
+++ b/data_descriptors/variables/lpmon.mrros.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.mrros.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.mrsfl.json b/data_descriptors/variables/lpmon.mrsfl.json
index 788bc5c28..482ed4411 100644
--- a/data_descriptors/variables/lpmon.mrsfl.json
+++ b/data_descriptors/variables/lpmon.mrsfl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.mrsfl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.mrsll.json b/data_descriptors/variables/lpmon.mrsll.json
index 3ff4d630c..2b3929874 100644
--- a/data_descriptors/variables/lpmon.mrsll.json
+++ b/data_descriptors/variables/lpmon.mrsll.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.mrsll.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.mrso.json b/data_descriptors/variables/lpmon.mrso.json
index 0a0c4d31c..6db03cf9f 100644
--- a/data_descriptors/variables/lpmon.mrso.json
+++ b/data_descriptors/variables/lpmon.mrso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.mrso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.mrsol.json b/data_descriptors/variables/lpmon.mrsol.json
index e331332ed..97cf0bbe1 100644
--- a/data_descriptors/variables/lpmon.mrsol.json
+++ b/data_descriptors/variables/lpmon.mrsol.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.mrsol.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.mrsolut.json b/data_descriptors/variables/lpmon.mrsolut.json
index b275cf473..92a68ca8f 100644
--- a/data_descriptors/variables/lpmon.mrsolut.json
+++ b/data_descriptors/variables/lpmon.mrsolut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.mrsolut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.mrsos.json b/data_descriptors/variables/lpmon.mrsos.json
index 5c6a99257..49429ed11 100644
--- a/data_descriptors/variables/lpmon.mrsos.json
+++ b/data_descriptors/variables/lpmon.mrsos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.mrsos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.mrsoslut.json b/data_descriptors/variables/lpmon.mrsoslut.json
index 8a93a659a..3716f0bd5 100644
--- a/data_descriptors/variables/lpmon.mrsoslut.json
+++ b/data_descriptors/variables/lpmon.mrsoslut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.mrsoslut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.mrtws.json b/data_descriptors/variables/lpmon.mrtws.json
index f9de97854..17a0557d2 100644
--- a/data_descriptors/variables/lpmon.mrtws.json
+++ b/data_descriptors/variables/lpmon.mrtws.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.mrtws.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nbp.json b/data_descriptors/variables/lpmon.nbp.json
index 714c4928b..a49631e61 100644
--- a/data_descriptors/variables/lpmon.nbp.json
+++ b/data_descriptors/variables/lpmon.nbp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nbp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.necblut.json b/data_descriptors/variables/lpmon.necblut.json
index 9c059f952..624cfad26 100644
--- a/data_descriptors/variables/lpmon.necblut.json
+++ b/data_descriptors/variables/lpmon.necblut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.necblut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nep.json b/data_descriptors/variables/lpmon.nep.json
index 889dacf42..afe154473 100644
--- a/data_descriptors/variables/lpmon.nep.json
+++ b/data_descriptors/variables/lpmon.nep.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nep.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.netatmoslandc13flux.json b/data_descriptors/variables/lpmon.netatmoslandc13flux.json
index b9e3b7680..7da6bbebc 100644
--- a/data_descriptors/variables/lpmon.netatmoslandc13flux.json
+++ b/data_descriptors/variables/lpmon.netatmoslandc13flux.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.netatmoslandc13flux.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.netatmoslandc14flux.json b/data_descriptors/variables/lpmon.netatmoslandc14flux.json
index 090c95410..dff3f9119 100644
--- a/data_descriptors/variables/lpmon.netatmoslandc14flux.json
+++ b/data_descriptors/variables/lpmon.netatmoslandc14flux.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.netatmoslandc14flux.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.netatmoslandco2flux.json b/data_descriptors/variables/lpmon.netatmoslandco2flux.json
index 2f7797868..2e95b73fb 100644
--- a/data_descriptors/variables/lpmon.netatmoslandco2flux.json
+++ b/data_descriptors/variables/lpmon.netatmoslandco2flux.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.netatmoslandco2flux.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nland.json b/data_descriptors/variables/lpmon.nland.json
index 71c240900..2df8b0269 100644
--- a/data_descriptors/variables/lpmon.nland.json
+++ b/data_descriptors/variables/lpmon.nland.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nland.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nleaf.json b/data_descriptors/variables/lpmon.nleaf.json
index 610eb23d2..4f3c51a38 100644
--- a/data_descriptors/variables/lpmon.nleaf.json
+++ b/data_descriptors/variables/lpmon.nleaf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nleaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nlitter.json b/data_descriptors/variables/lpmon.nlitter.json
index 67a2143c8..dffc83836 100644
--- a/data_descriptors/variables/lpmon.nlitter.json
+++ b/data_descriptors/variables/lpmon.nlitter.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nlitter.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nlittercwd.json b/data_descriptors/variables/lpmon.nlittercwd.json
index 22274f584..781be33a4 100644
--- a/data_descriptors/variables/lpmon.nlittercwd.json
+++ b/data_descriptors/variables/lpmon.nlittercwd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nlittercwd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nlittersubsurf.json b/data_descriptors/variables/lpmon.nlittersubsurf.json
index f19211f2f..174ddab60 100644
--- a/data_descriptors/variables/lpmon.nlittersubsurf.json
+++ b/data_descriptors/variables/lpmon.nlittersubsurf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nlittersubsurf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nlittersurf.json b/data_descriptors/variables/lpmon.nlittersurf.json
index 221ac3cef..629ad2206 100644
--- a/data_descriptors/variables/lpmon.nlittersurf.json
+++ b/data_descriptors/variables/lpmon.nlittersurf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nlittersurf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nmineral.json b/data_descriptors/variables/lpmon.nmineral.json
index 11bd8acaa..0fb3ee8d2 100644
--- a/data_descriptors/variables/lpmon.nmineral.json
+++ b/data_descriptors/variables/lpmon.nmineral.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nmineral.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nmineralnh4.json b/data_descriptors/variables/lpmon.nmineralnh4.json
index d9a451bd8..7ffb52914 100644
--- a/data_descriptors/variables/lpmon.nmineralnh4.json
+++ b/data_descriptors/variables/lpmon.nmineralnh4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nmineralnh4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nmineralno3.json b/data_descriptors/variables/lpmon.nmineralno3.json
index fb5692260..1a39a5089 100644
--- a/data_descriptors/variables/lpmon.nmineralno3.json
+++ b/data_descriptors/variables/lpmon.nmineralno3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nmineralno3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nother.json b/data_descriptors/variables/lpmon.nother.json
index 2315b15f5..ef423ebda 100644
--- a/data_descriptors/variables/lpmon.nother.json
+++ b/data_descriptors/variables/lpmon.nother.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nother.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.npp.json b/data_descriptors/variables/lpmon.npp.json
index 4ca0ef554..41d6c2cfa 100644
--- a/data_descriptors/variables/lpmon.npp.json
+++ b/data_descriptors/variables/lpmon.npp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.npp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nppgrass.json b/data_descriptors/variables/lpmon.nppgrass.json
index bfd68ce0b..1807a0668 100644
--- a/data_descriptors/variables/lpmon.nppgrass.json
+++ b/data_descriptors/variables/lpmon.nppgrass.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nppgrass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nppleaf.json b/data_descriptors/variables/lpmon.nppleaf.json
index eb55483d2..ddbfa3e40 100644
--- a/data_descriptors/variables/lpmon.nppleaf.json
+++ b/data_descriptors/variables/lpmon.nppleaf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nppleaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.npplut.json b/data_descriptors/variables/lpmon.npplut.json
index 33c1e10f4..01682874d 100644
--- a/data_descriptors/variables/lpmon.npplut.json
+++ b/data_descriptors/variables/lpmon.npplut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.npplut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nppother.json b/data_descriptors/variables/lpmon.nppother.json
index 54e46f60b..c6a344c1c 100644
--- a/data_descriptors/variables/lpmon.nppother.json
+++ b/data_descriptors/variables/lpmon.nppother.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nppother.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.npproot.json b/data_descriptors/variables/lpmon.npproot.json
index 399d86e29..9a19162bc 100644
--- a/data_descriptors/variables/lpmon.npproot.json
+++ b/data_descriptors/variables/lpmon.npproot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.npproot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nppshrub.json b/data_descriptors/variables/lpmon.nppshrub.json
index 385a645b2..b3830522b 100644
--- a/data_descriptors/variables/lpmon.nppshrub.json
+++ b/data_descriptors/variables/lpmon.nppshrub.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nppshrub.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nppstem.json b/data_descriptors/variables/lpmon.nppstem.json
index 1305ef98d..1e4cf4e7a 100644
--- a/data_descriptors/variables/lpmon.nppstem.json
+++ b/data_descriptors/variables/lpmon.nppstem.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nppstem.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.npptree.json b/data_descriptors/variables/lpmon.npptree.json
index 1035fe12a..14a9fbc47 100644
--- a/data_descriptors/variables/lpmon.npptree.json
+++ b/data_descriptors/variables/lpmon.npptree.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.npptree.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nppwood.json b/data_descriptors/variables/lpmon.nppwood.json
index 888cb03a4..fbcc78171 100644
--- a/data_descriptors/variables/lpmon.nppwood.json
+++ b/data_descriptors/variables/lpmon.nppwood.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nppwood.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nproduct.json b/data_descriptors/variables/lpmon.nproduct.json
index 6ec77bc49..21f2ff088 100644
--- a/data_descriptors/variables/lpmon.nproduct.json
+++ b/data_descriptors/variables/lpmon.nproduct.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nproduct.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nroot.json b/data_descriptors/variables/lpmon.nroot.json
index 63b5c42f4..a65590cf3 100644
--- a/data_descriptors/variables/lpmon.nroot.json
+++ b/data_descriptors/variables/lpmon.nroot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nroot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nsoil.json b/data_descriptors/variables/lpmon.nsoil.json
index 83a4b2d6d..ea71d0533 100644
--- a/data_descriptors/variables/lpmon.nsoil.json
+++ b/data_descriptors/variables/lpmon.nsoil.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nsoil.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nstem.json b/data_descriptors/variables/lpmon.nstem.json
index 1232eadd7..35b331858 100644
--- a/data_descriptors/variables/lpmon.nstem.json
+++ b/data_descriptors/variables/lpmon.nstem.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nstem.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nveg.json b/data_descriptors/variables/lpmon.nveg.json
index 99dd6f3e7..e9a3373b4 100644
--- a/data_descriptors/variables/lpmon.nveg.json
+++ b/data_descriptors/variables/lpmon.nveg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nveg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.nwdfraclut.json b/data_descriptors/variables/lpmon.nwdfraclut.json
index 15ae40c97..73bf50cd9 100644
--- a/data_descriptors/variables/lpmon.nwdfraclut.json
+++ b/data_descriptors/variables/lpmon.nwdfraclut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.nwdfraclut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.orog.json b/data_descriptors/variables/lpmon.orog.json
index 53c2289ec..4875b0a27 100644
--- a/data_descriptors/variables/lpmon.orog.json
+++ b/data_descriptors/variables/lpmon.orog.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.orog.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.pasturefrac.json b/data_descriptors/variables/lpmon.pasturefrac.json
index 37b384d8b..20890c1d4 100644
--- a/data_descriptors/variables/lpmon.pasturefrac.json
+++ b/data_descriptors/variables/lpmon.pasturefrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.pasturefrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.pasturefracc3.json b/data_descriptors/variables/lpmon.pasturefracc3.json
index f68860988..5f0dd95e4 100644
--- a/data_descriptors/variables/lpmon.pasturefracc3.json
+++ b/data_descriptors/variables/lpmon.pasturefracc3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.pasturefracc3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.pasturefracc4.json b/data_descriptors/variables/lpmon.pasturefracc4.json
index e9372c49a..8e0e4734b 100644
--- a/data_descriptors/variables/lpmon.pasturefracc4.json
+++ b/data_descriptors/variables/lpmon.pasturefracc4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.pasturefracc4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.prveg.json b/data_descriptors/variables/lpmon.prveg.json
index 86c7ed337..d4625ca39 100644
--- a/data_descriptors/variables/lpmon.prveg.json
+++ b/data_descriptors/variables/lpmon.prveg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.prveg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.ra.json b/data_descriptors/variables/lpmon.ra.json
index 7ec99d54f..9a28163ff 100644
--- a/data_descriptors/variables/lpmon.ra.json
+++ b/data_descriptors/variables/lpmon.ra.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.ra.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rac13.json b/data_descriptors/variables/lpmon.rac13.json
index d37d94bed..7dfacb7a0 100644
--- a/data_descriptors/variables/lpmon.rac13.json
+++ b/data_descriptors/variables/lpmon.rac13.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rac13.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rac14.json b/data_descriptors/variables/lpmon.rac14.json
index 07744c50a..7b0c08f56 100644
--- a/data_descriptors/variables/lpmon.rac14.json
+++ b/data_descriptors/variables/lpmon.rac14.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rac14.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.ragrass.json b/data_descriptors/variables/lpmon.ragrass.json
index 68a97e8f6..9be510b58 100644
--- a/data_descriptors/variables/lpmon.ragrass.json
+++ b/data_descriptors/variables/lpmon.ragrass.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.ragrass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.raleaf.json b/data_descriptors/variables/lpmon.raleaf.json
index 6cf4ea883..bc4eff375 100644
--- a/data_descriptors/variables/lpmon.raleaf.json
+++ b/data_descriptors/variables/lpmon.raleaf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.raleaf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.ralut.json b/data_descriptors/variables/lpmon.ralut.json
index e7c2d8775..4b247308c 100644
--- a/data_descriptors/variables/lpmon.ralut.json
+++ b/data_descriptors/variables/lpmon.ralut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.ralut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.raother.json b/data_descriptors/variables/lpmon.raother.json
index 9ea6ae999..39b07996d 100644
--- a/data_descriptors/variables/lpmon.raother.json
+++ b/data_descriptors/variables/lpmon.raother.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.raother.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.raroot.json b/data_descriptors/variables/lpmon.raroot.json
index 1e66a70dc..0067a922d 100644
--- a/data_descriptors/variables/lpmon.raroot.json
+++ b/data_descriptors/variables/lpmon.raroot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.raroot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rashrub.json b/data_descriptors/variables/lpmon.rashrub.json
index ed0fc69b8..746aa01a6 100644
--- a/data_descriptors/variables/lpmon.rashrub.json
+++ b/data_descriptors/variables/lpmon.rashrub.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rashrub.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rastem.json b/data_descriptors/variables/lpmon.rastem.json
index 52a349622..699b5f05e 100644
--- a/data_descriptors/variables/lpmon.rastem.json
+++ b/data_descriptors/variables/lpmon.rastem.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rastem.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.ratree.json b/data_descriptors/variables/lpmon.ratree.json
index acdeaca37..a10854206 100644
--- a/data_descriptors/variables/lpmon.ratree.json
+++ b/data_descriptors/variables/lpmon.ratree.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.ratree.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.residualfrac.json b/data_descriptors/variables/lpmon.residualfrac.json
index b8967ca5d..1ece3527f 100644
--- a/data_descriptors/variables/lpmon.residualfrac.json
+++ b/data_descriptors/variables/lpmon.residualfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.residualfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rgrowth.json b/data_descriptors/variables/lpmon.rgrowth.json
index ccf7ae866..fb32ee4ff 100644
--- a/data_descriptors/variables/lpmon.rgrowth.json
+++ b/data_descriptors/variables/lpmon.rgrowth.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rgrowth.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rh.json b/data_descriptors/variables/lpmon.rh.json
index 6aa69a9f5..950bc6161 100644
--- a/data_descriptors/variables/lpmon.rh.json
+++ b/data_descriptors/variables/lpmon.rh.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rh.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rhc13.json b/data_descriptors/variables/lpmon.rhc13.json
index 0b046f35f..477a74ec2 100644
--- a/data_descriptors/variables/lpmon.rhc13.json
+++ b/data_descriptors/variables/lpmon.rhc13.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rhc13.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rhc14.json b/data_descriptors/variables/lpmon.rhc14.json
index a378d4562..af3754c2b 100644
--- a/data_descriptors/variables/lpmon.rhc14.json
+++ b/data_descriptors/variables/lpmon.rhc14.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rhc14.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rhgrass.json b/data_descriptors/variables/lpmon.rhgrass.json
index 321688fde..f4ab65780 100644
--- a/data_descriptors/variables/lpmon.rhgrass.json
+++ b/data_descriptors/variables/lpmon.rhgrass.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rhgrass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rhlitter.json b/data_descriptors/variables/lpmon.rhlitter.json
index addee4424..366150fd7 100644
--- a/data_descriptors/variables/lpmon.rhlitter.json
+++ b/data_descriptors/variables/lpmon.rhlitter.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rhlitter.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rhlut.json b/data_descriptors/variables/lpmon.rhlut.json
index 79bd66ff6..169cbc418 100644
--- a/data_descriptors/variables/lpmon.rhlut.json
+++ b/data_descriptors/variables/lpmon.rhlut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rhlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rhshrub.json b/data_descriptors/variables/lpmon.rhshrub.json
index 235454a6a..ee0938337 100644
--- a/data_descriptors/variables/lpmon.rhshrub.json
+++ b/data_descriptors/variables/lpmon.rhshrub.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rhshrub.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rhsoil.json b/data_descriptors/variables/lpmon.rhsoil.json
index 26a73c4bd..f29d75ecd 100644
--- a/data_descriptors/variables/lpmon.rhsoil.json
+++ b/data_descriptors/variables/lpmon.rhsoil.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rhsoil.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rhtree.json b/data_descriptors/variables/lpmon.rhtree.json
index cfa2ab856..ce5deb5b4 100644
--- a/data_descriptors/variables/lpmon.rhtree.json
+++ b/data_descriptors/variables/lpmon.rhtree.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rhtree.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rluslut.json b/data_descriptors/variables/lpmon.rluslut.json
index 4ab354939..9741f6316 100644
--- a/data_descriptors/variables/lpmon.rluslut.json
+++ b/data_descriptors/variables/lpmon.rluslut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rluslut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rmaint.json b/data_descriptors/variables/lpmon.rmaint.json
index 5db04c171..332c18b71 100644
--- a/data_descriptors/variables/lpmon.rmaint.json
+++ b/data_descriptors/variables/lpmon.rmaint.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rmaint.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.rsuslut.json b/data_descriptors/variables/lpmon.rsuslut.json
index 2c341ae78..cdc97a187 100644
--- a/data_descriptors/variables/lpmon.rsuslut.json
+++ b/data_descriptors/variables/lpmon.rsuslut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.rsuslut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.sftgif.json b/data_descriptors/variables/lpmon.sftgif.json
index 76f7b7772..a112d4236 100644
--- a/data_descriptors/variables/lpmon.sftgif.json
+++ b/data_descriptors/variables/lpmon.sftgif.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.sftgif.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.shrubfrac.json b/data_descriptors/variables/lpmon.shrubfrac.json
index 222cae2e3..0fcec646b 100644
--- a/data_descriptors/variables/lpmon.shrubfrac.json
+++ b/data_descriptors/variables/lpmon.shrubfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.shrubfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.swelut.json b/data_descriptors/variables/lpmon.swelut.json
index cea9479db..b376abd30 100644
--- a/data_descriptors/variables/lpmon.swelut.json
+++ b/data_descriptors/variables/lpmon.swelut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.swelut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.taslut.json b/data_descriptors/variables/lpmon.taslut.json
index 3859e19e9..2074ac130 100644
--- a/data_descriptors/variables/lpmon.taslut.json
+++ b/data_descriptors/variables/lpmon.taslut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.taslut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.tran.json b/data_descriptors/variables/lpmon.tran.json
index a2eab294e..f55c8fbb8 100644
--- a/data_descriptors/variables/lpmon.tran.json
+++ b/data_descriptors/variables/lpmon.tran.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.tran.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.treefrac.json b/data_descriptors/variables/lpmon.treefrac.json
index 803fb7ab8..43dc31e57 100644
--- a/data_descriptors/variables/lpmon.treefrac.json
+++ b/data_descriptors/variables/lpmon.treefrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.treefrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.treefracbdldcd.json b/data_descriptors/variables/lpmon.treefracbdldcd.json
index 3e2cc2e0f..1d567e3a8 100644
--- a/data_descriptors/variables/lpmon.treefracbdldcd.json
+++ b/data_descriptors/variables/lpmon.treefracbdldcd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.treefracbdldcd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.treefracbdlevg.json b/data_descriptors/variables/lpmon.treefracbdlevg.json
index a8e9bec1f..fceef89df 100644
--- a/data_descriptors/variables/lpmon.treefracbdlevg.json
+++ b/data_descriptors/variables/lpmon.treefracbdlevg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.treefracbdlevg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.treefracndldcd.json b/data_descriptors/variables/lpmon.treefracndldcd.json
index e60ae5f53..f51fa1381 100644
--- a/data_descriptors/variables/lpmon.treefracndldcd.json
+++ b/data_descriptors/variables/lpmon.treefracndldcd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.treefracndldcd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.treefracndlevg.json b/data_descriptors/variables/lpmon.treefracndlevg.json
index 6940cef07..6ec288d36 100644
--- a/data_descriptors/variables/lpmon.treefracndlevg.json
+++ b/data_descriptors/variables/lpmon.treefracndlevg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.treefracndlevg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.treefracprimdec.json b/data_descriptors/variables/lpmon.treefracprimdec.json
index aa1f72ac1..266f49050 100644
--- a/data_descriptors/variables/lpmon.treefracprimdec.json
+++ b/data_descriptors/variables/lpmon.treefracprimdec.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.treefracprimdec.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.treefracprimever.json b/data_descriptors/variables/lpmon.treefracprimever.json
index fc76a9dd9..faa9f9f8f 100644
--- a/data_descriptors/variables/lpmon.treefracprimever.json
+++ b/data_descriptors/variables/lpmon.treefracprimever.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.treefracprimever.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.treefracsecdec.json b/data_descriptors/variables/lpmon.treefracsecdec.json
index 638629243..84d3dbf72 100644
--- a/data_descriptors/variables/lpmon.treefracsecdec.json
+++ b/data_descriptors/variables/lpmon.treefracsecdec.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.treefracsecdec.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.treefracsecever.json b/data_descriptors/variables/lpmon.treefracsecever.json
index 77cde04d3..29532e50d 100644
--- a/data_descriptors/variables/lpmon.treefracsecever.json
+++ b/data_descriptors/variables/lpmon.treefracsecever.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.treefracsecever.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.tsl.json b/data_descriptors/variables/lpmon.tsl.json
index 051d2ae10..3ac691497 100644
--- a/data_descriptors/variables/lpmon.tsl.json
+++ b/data_descriptors/variables/lpmon.tsl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.tsl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.tslsilut.json b/data_descriptors/variables/lpmon.tslsilut.json
index 9990fa5c8..42031d7de 100644
--- a/data_descriptors/variables/lpmon.tslsilut.json
+++ b/data_descriptors/variables/lpmon.tslsilut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.tslsilut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.tsoilpools.json b/data_descriptors/variables/lpmon.tsoilpools.json
index 6bd889c65..b8ea68a9e 100644
--- a/data_descriptors/variables/lpmon.tsoilpools.json
+++ b/data_descriptors/variables/lpmon.tsoilpools.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.tsoilpools.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.vegfrac.json b/data_descriptors/variables/lpmon.vegfrac.json
index e01471cc6..fb7f913a6 100644
--- a/data_descriptors/variables/lpmon.vegfrac.json
+++ b/data_descriptors/variables/lpmon.vegfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.vegfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.vegheight.json b/data_descriptors/variables/lpmon.vegheight.json
index c09a57f67..9f93e38cd 100644
--- a/data_descriptors/variables/lpmon.vegheight.json
+++ b/data_descriptors/variables/lpmon.vegheight.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.vegheight.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.vegheightcrop.json b/data_descriptors/variables/lpmon.vegheightcrop.json
index a133e2ddc..11ff66a77 100644
--- a/data_descriptors/variables/lpmon.vegheightcrop.json
+++ b/data_descriptors/variables/lpmon.vegheightcrop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.vegheightcrop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.vegheightgrass.json b/data_descriptors/variables/lpmon.vegheightgrass.json
index 55470af37..487223043 100644
--- a/data_descriptors/variables/lpmon.vegheightgrass.json
+++ b/data_descriptors/variables/lpmon.vegheightgrass.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.vegheightgrass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.vegheightpasture.json b/data_descriptors/variables/lpmon.vegheightpasture.json
index e4db55bdb..895945a65 100644
--- a/data_descriptors/variables/lpmon.vegheightpasture.json
+++ b/data_descriptors/variables/lpmon.vegheightpasture.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.vegheightpasture.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.vegheightshrub.json b/data_descriptors/variables/lpmon.vegheightshrub.json
index 6058a50fa..749106afc 100644
--- a/data_descriptors/variables/lpmon.vegheightshrub.json
+++ b/data_descriptors/variables/lpmon.vegheightshrub.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.vegheightshrub.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.vegheighttree.json b/data_descriptors/variables/lpmon.vegheighttree.json
index f117bce80..5001e6890 100644
--- a/data_descriptors/variables/lpmon.vegheighttree.json
+++ b/data_descriptors/variables/lpmon.vegheighttree.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.vegheighttree.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.wetlandch4.json b/data_descriptors/variables/lpmon.wetlandch4.json
index 908d4ce66..950f7e35b 100644
--- a/data_descriptors/variables/lpmon.wetlandch4.json
+++ b/data_descriptors/variables/lpmon.wetlandch4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.wetlandch4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.wetlandch4cons.json b/data_descriptors/variables/lpmon.wetlandch4cons.json
index 08ae25a3a..c8193df74 100644
--- a/data_descriptors/variables/lpmon.wetlandch4cons.json
+++ b/data_descriptors/variables/lpmon.wetlandch4cons.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.wetlandch4cons.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.wetlandch4prod.json b/data_descriptors/variables/lpmon.wetlandch4prod.json
index eb19a5d3d..6f76914e0 100644
--- a/data_descriptors/variables/lpmon.wetlandch4prod.json
+++ b/data_descriptors/variables/lpmon.wetlandch4prod.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.wetlandch4prod.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.wetlandfrac.json b/data_descriptors/variables/lpmon.wetlandfrac.json
index c47cec102..125b5005f 100644
--- a/data_descriptors/variables/lpmon.wetlandfrac.json
+++ b/data_descriptors/variables/lpmon.wetlandfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.wetlandfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpmon.wtd.json b/data_descriptors/variables/lpmon.wtd.json
index 6828e2f3a..0ed41f83b 100644
--- a/data_descriptors/variables/lpmon.wtd.json
+++ b/data_descriptors/variables/lpmon.wtd.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpmon.wtd.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyr.baresoilfrac.json b/data_descriptors/variables/lpyr.baresoilfrac.json
index 2ac00144a..a0b17ffa0 100644
--- a/data_descriptors/variables/lpyr.baresoilfrac.json
+++ b/data_descriptors/variables/lpyr.baresoilfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyr.baresoilfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyr.cropfrac.json b/data_descriptors/variables/lpyr.cropfrac.json
index 0ca2e3066..2b20ab17c 100644
--- a/data_descriptors/variables/lpyr.cropfrac.json
+++ b/data_descriptors/variables/lpyr.cropfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyr.cropfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyr.fracinlut.json b/data_descriptors/variables/lpyr.fracinlut.json
index be33e2c14..93b1013b2 100644
--- a/data_descriptors/variables/lpyr.fracinlut.json
+++ b/data_descriptors/variables/lpyr.fracinlut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyr.fracinlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyr.fracoutlut.json b/data_descriptors/variables/lpyr.fracoutlut.json
index ed8641a95..fbbecdb49 100644
--- a/data_descriptors/variables/lpyr.fracoutlut.json
+++ b/data_descriptors/variables/lpyr.fracoutlut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyr.fracoutlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyr.grassfrac.json b/data_descriptors/variables/lpyr.grassfrac.json
index daf6e135f..2389defe4 100644
--- a/data_descriptors/variables/lpyr.grassfrac.json
+++ b/data_descriptors/variables/lpyr.grassfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyr.grassfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyr.residualfrac.json b/data_descriptors/variables/lpyr.residualfrac.json
index db1788410..ec899850d 100644
--- a/data_descriptors/variables/lpyr.residualfrac.json
+++ b/data_descriptors/variables/lpyr.residualfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyr.residualfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyr.shrubfrac.json b/data_descriptors/variables/lpyr.shrubfrac.json
index 54a252ced..42caecc2d 100644
--- a/data_descriptors/variables/lpyr.shrubfrac.json
+++ b/data_descriptors/variables/lpyr.shrubfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyr.shrubfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyr.treefrac.json b/data_descriptors/variables/lpyr.treefrac.json
index 4b3c12d14..98d6f14bb 100644
--- a/data_descriptors/variables/lpyr.treefrac.json
+++ b/data_descriptors/variables/lpyr.treefrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyr.treefrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyr.vegfrac.json b/data_descriptors/variables/lpyr.vegfrac.json
index bd783644c..f9e1a375b 100644
--- a/data_descriptors/variables/lpyr.vegfrac.json
+++ b/data_descriptors/variables/lpyr.vegfrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyr.vegfrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyrpt.clitter.json b/data_descriptors/variables/lpyrpt.clitter.json
index ea1663af7..f3782af46 100644
--- a/data_descriptors/variables/lpyrpt.clitter.json
+++ b/data_descriptors/variables/lpyrpt.clitter.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.clitter.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyrpt.clitterlut.json b/data_descriptors/variables/lpyrpt.clitterlut.json
index 2bf54bc73..6e86ff36c 100644
--- a/data_descriptors/variables/lpyrpt.clitterlut.json
+++ b/data_descriptors/variables/lpyrpt.clitterlut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.clitterlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyrpt.cproduct.json b/data_descriptors/variables/lpyrpt.cproduct.json
index bb5003f54..f95f81bb6 100644
--- a/data_descriptors/variables/lpyrpt.cproduct.json
+++ b/data_descriptors/variables/lpyrpt.cproduct.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.cproduct.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyrpt.cproductlut.json b/data_descriptors/variables/lpyrpt.cproductlut.json
index 83d658aa8..212656e0c 100644
--- a/data_descriptors/variables/lpyrpt.cproductlut.json
+++ b/data_descriptors/variables/lpyrpt.cproductlut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.cproductlut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyrpt.csoil.json b/data_descriptors/variables/lpyrpt.csoil.json
index 85786c863..23d165805 100644
--- a/data_descriptors/variables/lpyrpt.csoil.json
+++ b/data_descriptors/variables/lpyrpt.csoil.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.csoil.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyrpt.csoillut.json b/data_descriptors/variables/lpyrpt.csoillut.json
index 404a50b43..11054e03e 100644
--- a/data_descriptors/variables/lpyrpt.csoillut.json
+++ b/data_descriptors/variables/lpyrpt.csoillut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.csoillut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyrpt.cveg.json b/data_descriptors/variables/lpyrpt.cveg.json
index 25d6524a8..7cc68830e 100644
--- a/data_descriptors/variables/lpyrpt.cveg.json
+++ b/data_descriptors/variables/lpyrpt.cveg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.cveg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyrpt.cveglut.json b/data_descriptors/variables/lpyrpt.cveglut.json
index 67468d831..c7920b5e7 100644
--- a/data_descriptors/variables/lpyrpt.cveglut.json
+++ b/data_descriptors/variables/lpyrpt.cveglut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.cveglut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/lpyrpt.fraclut.json b/data_descriptors/variables/lpyrpt.fraclut.json
index b99c464e9..30092d4e4 100644
--- a/data_descriptors/variables/lpyrpt.fraclut.json
+++ b/data_descriptors/variables/lpyrpt.fraclut.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "lpyrpt.fraclut.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "lpyrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obday.chlos.json b/data_descriptors/variables/obday.chlos.json
index e768dd756..cd1d3af18 100644
--- a/data_descriptors/variables/obday.chlos.json
+++ b/data_descriptors/variables/obday.chlos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obday.chlos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obday.phycos.json b/data_descriptors/variables/obday.phycos.json
index 1a8323a1e..2e60c5fde 100644
--- a/data_descriptors/variables/obday.phycos.json
+++ b/data_descriptors/variables/obday.phycos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obday.phycos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.aragos.json b/data_descriptors/variables/obmon.aragos.json
index 91e506118..c46a170b0 100644
--- a/data_descriptors/variables/obmon.aragos.json
+++ b/data_descriptors/variables/obmon.aragos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.aragos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.baccos.json b/data_descriptors/variables/obmon.baccos.json
index 9bac61f7c..f50a63ddf 100644
--- a/data_descriptors/variables/obmon.baccos.json
+++ b/data_descriptors/variables/obmon.baccos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.baccos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.bfeos.json b/data_descriptors/variables/obmon.bfeos.json
index 2935d3efc..d4ed04069 100644
--- a/data_descriptors/variables/obmon.bfeos.json
+++ b/data_descriptors/variables/obmon.bfeos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.bfeos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.bsios.json b/data_descriptors/variables/obmon.bsios.json
index 298ee6a2c..bcf8f7aa5 100644
--- a/data_descriptors/variables/obmon.bsios.json
+++ b/data_descriptors/variables/obmon.bsios.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.bsios.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.calcos.json b/data_descriptors/variables/obmon.calcos.json
index 629af71f9..79fb68886 100644
--- a/data_descriptors/variables/obmon.calcos.json
+++ b/data_descriptors/variables/obmon.calcos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.calcos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.chlcalcos.json b/data_descriptors/variables/obmon.chlcalcos.json
index 7946f3427..9f981c0b4 100644
--- a/data_descriptors/variables/obmon.chlcalcos.json
+++ b/data_descriptors/variables/obmon.chlcalcos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.chlcalcos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.chldiatos.json b/data_descriptors/variables/obmon.chldiatos.json
index a4bc5a6be..69f081d52 100644
--- a/data_descriptors/variables/obmon.chldiatos.json
+++ b/data_descriptors/variables/obmon.chldiatos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.chldiatos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.chldiazos.json b/data_descriptors/variables/obmon.chldiazos.json
index 38f9e3f10..1b78aa100 100644
--- a/data_descriptors/variables/obmon.chldiazos.json
+++ b/data_descriptors/variables/obmon.chldiazos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.chldiazos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.chlmiscos.json b/data_descriptors/variables/obmon.chlmiscos.json
index 143d3f8f1..c79a95526 100644
--- a/data_descriptors/variables/obmon.chlmiscos.json
+++ b/data_descriptors/variables/obmon.chlmiscos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.chlmiscos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.chlos.json b/data_descriptors/variables/obmon.chlos.json
index a57943b7d..689967127 100644
--- a/data_descriptors/variables/obmon.chlos.json
+++ b/data_descriptors/variables/obmon.chlos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.chlos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.chlpicoos.json b/data_descriptors/variables/obmon.chlpicoos.json
index 4478cde54..a792195ee 100644
--- a/data_descriptors/variables/obmon.chlpicoos.json
+++ b/data_descriptors/variables/obmon.chlpicoos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.chlpicoos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.co3abioos.json b/data_descriptors/variables/obmon.co3abioos.json
index a114b1028..1e0d5aa14 100644
--- a/data_descriptors/variables/obmon.co3abioos.json
+++ b/data_descriptors/variables/obmon.co3abioos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.co3abioos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.co3natos.json b/data_descriptors/variables/obmon.co3natos.json
index 7f43c59eb..60a2b05a4 100644
--- a/data_descriptors/variables/obmon.co3natos.json
+++ b/data_descriptors/variables/obmon.co3natos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.co3natos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.co3os.json b/data_descriptors/variables/obmon.co3os.json
index 947e8d30d..beba2a620 100644
--- a/data_descriptors/variables/obmon.co3os.json
+++ b/data_descriptors/variables/obmon.co3os.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.co3os.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.co3sataragos.json b/data_descriptors/variables/obmon.co3sataragos.json
index e63676eed..7d3c82cc9 100644
--- a/data_descriptors/variables/obmon.co3sataragos.json
+++ b/data_descriptors/variables/obmon.co3sataragos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.co3sataragos.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.co3satcalcos.json b/data_descriptors/variables/obmon.co3satcalcos.json
index 4e5be8655..049b89bea 100644
--- a/data_descriptors/variables/obmon.co3satcalcos.json
+++ b/data_descriptors/variables/obmon.co3satcalcos.json
@@ -2,7 +2,7 @@
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-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.detocos.json b/data_descriptors/variables/obmon.detocos.json
index 334103556..dd70d5fd4 100644
--- a/data_descriptors/variables/obmon.detocos.json
+++ b/data_descriptors/variables/obmon.detocos.json
@@ -2,7 +2,7 @@
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   "id": "obmon.detocos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.dfeos.json b/data_descriptors/variables/obmon.dfeos.json
index cc32b1ffa..a4fcdf356 100644
--- a/data_descriptors/variables/obmon.dfeos.json
+++ b/data_descriptors/variables/obmon.dfeos.json
@@ -2,7 +2,7 @@
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   "id": "obmon.dfeos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.dissi13cos.json b/data_descriptors/variables/obmon.dissi13cos.json
index 859434b97..5bdccf0ea 100644
--- a/data_descriptors/variables/obmon.dissi13cos.json
+++ b/data_descriptors/variables/obmon.dissi13cos.json
@@ -2,7 +2,7 @@
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   "id": "obmon.dissi13cos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.dissi14cabioos.json b/data_descriptors/variables/obmon.dissi14cabioos.json
index 9ad3a6670..3265e93d2 100644
--- a/data_descriptors/variables/obmon.dissi14cabioos.json
+++ b/data_descriptors/variables/obmon.dissi14cabioos.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
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index 792fb9623..9273cae4d 100644
--- a/data_descriptors/variables/obmon.dissicabioos.json
+++ b/data_descriptors/variables/obmon.dissicabioos.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.dissicnatos.json b/data_descriptors/variables/obmon.dissicnatos.json
index 8295591a3..97ce76cb9 100644
--- a/data_descriptors/variables/obmon.dissicnatos.json
+++ b/data_descriptors/variables/obmon.dissicnatos.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/obmon.dissicos.json b/data_descriptors/variables/obmon.dissicos.json
index a5a72542e..e8aecd02c 100644
--- a/data_descriptors/variables/obmon.dissicos.json
+++ b/data_descriptors/variables/obmon.dissicos.json
@@ -2,7 +2,7 @@
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   "id": "obmon.dissicos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.dissocos.json b/data_descriptors/variables/obmon.dissocos.json
index 9cb714592..1b86b8100 100644
--- a/data_descriptors/variables/obmon.dissocos.json
+++ b/data_descriptors/variables/obmon.dissocos.json
@@ -2,7 +2,7 @@
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   "id": "obmon.dissocos.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.dmsos.json b/data_descriptors/variables/obmon.dmsos.json
index 0ef27ab9c..1d81cb5e6 100644
--- a/data_descriptors/variables/obmon.dmsos.json
+++ b/data_descriptors/variables/obmon.dmsos.json
@@ -2,7 +2,7 @@
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   "id": "obmon.dmsos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.dpco2.json b/data_descriptors/variables/obmon.dpco2.json
index a505630ee..4febc4f62 100644
--- a/data_descriptors/variables/obmon.dpco2.json
+++ b/data_descriptors/variables/obmon.dpco2.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
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index 16803b1e4..1a2fe5a85 100644
--- a/data_descriptors/variables/obmon.dpco2abio.json
+++ b/data_descriptors/variables/obmon.dpco2abio.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.dpco2nat.json b/data_descriptors/variables/obmon.dpco2nat.json
index fa818d6a3..6ec523fb2 100644
--- a/data_descriptors/variables/obmon.dpco2nat.json
+++ b/data_descriptors/variables/obmon.dpco2nat.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/obmon.dpo2.json b/data_descriptors/variables/obmon.dpo2.json
index ddf8a24dd..932445fc3 100644
--- a/data_descriptors/variables/obmon.dpo2.json
+++ b/data_descriptors/variables/obmon.dpo2.json
@@ -2,7 +2,7 @@
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   "id": "obmon.dpo2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.eparag100.json b/data_descriptors/variables/obmon.eparag100.json
index 3ab5d4e6d..dc5366788 100644
--- a/data_descriptors/variables/obmon.eparag100.json
+++ b/data_descriptors/variables/obmon.eparag100.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.epc100.json b/data_descriptors/variables/obmon.epc100.json
index 17a823a0e..5d2d245af 100644
--- a/data_descriptors/variables/obmon.epc100.json
+++ b/data_descriptors/variables/obmon.epc100.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.epcalc100.json b/data_descriptors/variables/obmon.epcalc100.json
index 4696bceb7..3dfb1a829 100644
--- a/data_descriptors/variables/obmon.epcalc100.json
+++ b/data_descriptors/variables/obmon.epcalc100.json
@@ -2,7 +2,7 @@
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   "id": "obmon.epcalc100.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.epfe100.json b/data_descriptors/variables/obmon.epfe100.json
index 6fd2e3192..8ebb8d711 100644
--- a/data_descriptors/variables/obmon.epfe100.json
+++ b/data_descriptors/variables/obmon.epfe100.json
@@ -2,7 +2,7 @@
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   "id": "obmon.epfe100.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.epn100.json b/data_descriptors/variables/obmon.epn100.json
index 8d4496e1b..3ba109e23 100644
--- a/data_descriptors/variables/obmon.epn100.json
+++ b/data_descriptors/variables/obmon.epn100.json
@@ -2,7 +2,7 @@
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   "id": "obmon.epn100.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.epp100.json b/data_descriptors/variables/obmon.epp100.json
index 5c5b0b896..f7ee8f2da 100644
--- a/data_descriptors/variables/obmon.epp100.json
+++ b/data_descriptors/variables/obmon.epp100.json
@@ -2,7 +2,7 @@
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   "id": "obmon.epp100.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.epsi100.json b/data_descriptors/variables/obmon.epsi100.json
index 7f7a2a845..02238c50f 100644
--- a/data_descriptors/variables/obmon.epsi100.json
+++ b/data_descriptors/variables/obmon.epsi100.json
@@ -2,7 +2,7 @@
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   "id": "obmon.epsi100.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fbddtalk.json b/data_descriptors/variables/obmon.fbddtalk.json
index 06b9f3cfe..69094a12a 100644
--- a/data_descriptors/variables/obmon.fbddtalk.json
+++ b/data_descriptors/variables/obmon.fbddtalk.json
@@ -2,7 +2,7 @@
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   "id": "obmon.fbddtalk.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fbddtdic.json b/data_descriptors/variables/obmon.fbddtdic.json
index 9725e0d7c..c0f68ad99 100644
--- a/data_descriptors/variables/obmon.fbddtdic.json
+++ b/data_descriptors/variables/obmon.fbddtdic.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fbddtdife.json b/data_descriptors/variables/obmon.fbddtdife.json
index 663756f65..b714e4a13 100644
--- a/data_descriptors/variables/obmon.fbddtdife.json
+++ b/data_descriptors/variables/obmon.fbddtdife.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fbddtdin.json b/data_descriptors/variables/obmon.fbddtdin.json
index 28f5c645b..136be1fbc 100644
--- a/data_descriptors/variables/obmon.fbddtdin.json
+++ b/data_descriptors/variables/obmon.fbddtdin.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fbddtdip.json b/data_descriptors/variables/obmon.fbddtdip.json
index 039afdae7..ef85cc3d0 100644
--- a/data_descriptors/variables/obmon.fbddtdip.json
+++ b/data_descriptors/variables/obmon.fbddtdip.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fbddtdisi.json b/data_descriptors/variables/obmon.fbddtdisi.json
index 76fe3fe6c..fad67e31a 100644
--- a/data_descriptors/variables/obmon.fbddtdisi.json
+++ b/data_descriptors/variables/obmon.fbddtdisi.json
@@ -2,7 +2,7 @@
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   "id": "obmon.fbddtdisi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fddtalk.json b/data_descriptors/variables/obmon.fddtalk.json
index 8f9a271dd..4dfd8eacf 100644
--- a/data_descriptors/variables/obmon.fddtalk.json
+++ b/data_descriptors/variables/obmon.fddtalk.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.fddtalk.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fddtdic.json b/data_descriptors/variables/obmon.fddtdic.json
index 837a5dfb0..e85c0a392 100644
--- a/data_descriptors/variables/obmon.fddtdic.json
+++ b/data_descriptors/variables/obmon.fddtdic.json
@@ -2,7 +2,7 @@
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   "id": "obmon.fddtdic.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fddtdife.json b/data_descriptors/variables/obmon.fddtdife.json
index b93f33d83..a062d4bac 100644
--- a/data_descriptors/variables/obmon.fddtdife.json
+++ b/data_descriptors/variables/obmon.fddtdife.json
@@ -2,7 +2,7 @@
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   "id": "obmon.fddtdife.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fddtdin.json b/data_descriptors/variables/obmon.fddtdin.json
index d33afad87..6f6ce5a9b 100644
--- a/data_descriptors/variables/obmon.fddtdin.json
+++ b/data_descriptors/variables/obmon.fddtdin.json
@@ -2,7 +2,7 @@
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   "id": "obmon.fddtdin.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fddtdip.json b/data_descriptors/variables/obmon.fddtdip.json
index de48c5ea5..379f4c589 100644
--- a/data_descriptors/variables/obmon.fddtdip.json
+++ b/data_descriptors/variables/obmon.fddtdip.json
@@ -2,7 +2,7 @@
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   "id": "obmon.fddtdip.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fddtdisi.json b/data_descriptors/variables/obmon.fddtdisi.json
index f7163815a..fcb78d5ec 100644
--- a/data_descriptors/variables/obmon.fddtdisi.json
+++ b/data_descriptors/variables/obmon.fddtdisi.json
@@ -2,7 +2,7 @@
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   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fg13co2.json b/data_descriptors/variables/obmon.fg13co2.json
index 7f323ed79..1407df5c1 100644
--- a/data_descriptors/variables/obmon.fg13co2.json
+++ b/data_descriptors/variables/obmon.fg13co2.json
@@ -2,7 +2,7 @@
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   "id": "obmon.fg13co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fg14co2.json b/data_descriptors/variables/obmon.fg14co2.json
index edfd22035..509595273 100644
--- a/data_descriptors/variables/obmon.fg14co2.json
+++ b/data_descriptors/variables/obmon.fg14co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.fg14co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fg14co2abio.json b/data_descriptors/variables/obmon.fg14co2abio.json
index b86c9214f..eafd221e2 100644
--- a/data_descriptors/variables/obmon.fg14co2abio.json
+++ b/data_descriptors/variables/obmon.fg14co2abio.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.fg14co2abio.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fgco2.json b/data_descriptors/variables/obmon.fgco2.json
index 46c908234..0b0ce4586 100644
--- a/data_descriptors/variables/obmon.fgco2.json
+++ b/data_descriptors/variables/obmon.fgco2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.fgco2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fgco2abio.json b/data_descriptors/variables/obmon.fgco2abio.json
index ee879a4cd..be83eb291 100644
--- a/data_descriptors/variables/obmon.fgco2abio.json
+++ b/data_descriptors/variables/obmon.fgco2abio.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.fgco2abio.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fgco2nat.json b/data_descriptors/variables/obmon.fgco2nat.json
index 0099defbf..ac6d5fd93 100644
--- a/data_descriptors/variables/obmon.fgco2nat.json
+++ b/data_descriptors/variables/obmon.fgco2nat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.fgco2nat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fgdms.json b/data_descriptors/variables/obmon.fgdms.json
index 29e57151e..fa3445a80 100644
--- a/data_descriptors/variables/obmon.fgdms.json
+++ b/data_descriptors/variables/obmon.fgdms.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.fgdms.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fgo2.json b/data_descriptors/variables/obmon.fgo2.json
index f31d0db39..7a121650a 100644
--- a/data_descriptors/variables/obmon.fgo2.json
+++ b/data_descriptors/variables/obmon.fgo2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.fgo2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.frfe.json b/data_descriptors/variables/obmon.frfe.json
index 1569fdaec..983a8a3cc 100644
--- a/data_descriptors/variables/obmon.frfe.json
+++ b/data_descriptors/variables/obmon.frfe.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.frfe.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fric.json b/data_descriptors/variables/obmon.fric.json
index 414d1ac41..fe7f7d55e 100644
--- a/data_descriptors/variables/obmon.fric.json
+++ b/data_descriptors/variables/obmon.fric.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.fric.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.frn.json b/data_descriptors/variables/obmon.frn.json
index 42bd0e251..29032d154 100644
--- a/data_descriptors/variables/obmon.frn.json
+++ b/data_descriptors/variables/obmon.frn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.frn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.froc.json b/data_descriptors/variables/obmon.froc.json
index 9708eedd2..e4c65ff38 100644
--- a/data_descriptors/variables/obmon.froc.json
+++ b/data_descriptors/variables/obmon.froc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.froc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fsfe.json b/data_descriptors/variables/obmon.fsfe.json
index 508a99a2c..30bb55d98 100644
--- a/data_descriptors/variables/obmon.fsfe.json
+++ b/data_descriptors/variables/obmon.fsfe.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.fsfe.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.fsn.json b/data_descriptors/variables/obmon.fsn.json
index e630a9db7..73f2a3a4b 100644
--- a/data_descriptors/variables/obmon.fsn.json
+++ b/data_descriptors/variables/obmon.fsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.fsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.icfriver.json b/data_descriptors/variables/obmon.icfriver.json
index 585be0b41..cb28ac0bb 100644
--- a/data_descriptors/variables/obmon.icfriver.json
+++ b/data_descriptors/variables/obmon.icfriver.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.icfriver.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intdic.json b/data_descriptors/variables/obmon.intdic.json
index ec34e5445..f34df335b 100644
--- a/data_descriptors/variables/obmon.intdic.json
+++ b/data_descriptors/variables/obmon.intdic.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intdic.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intdoc.json b/data_descriptors/variables/obmon.intdoc.json
index 05f6a3596..075f8236c 100644
--- a/data_descriptors/variables/obmon.intdoc.json
+++ b/data_descriptors/variables/obmon.intdoc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intdoc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intparag.json b/data_descriptors/variables/obmon.intparag.json
index 09dcbe492..0641d8b73 100644
--- a/data_descriptors/variables/obmon.intparag.json
+++ b/data_descriptors/variables/obmon.intparag.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intparag.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intpbfe.json b/data_descriptors/variables/obmon.intpbfe.json
index b4c45f519..1d373cd24 100644
--- a/data_descriptors/variables/obmon.intpbfe.json
+++ b/data_descriptors/variables/obmon.intpbfe.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intpbfe.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intpbn.json b/data_descriptors/variables/obmon.intpbn.json
index 61448b3a3..7c62bba8f 100644
--- a/data_descriptors/variables/obmon.intpbn.json
+++ b/data_descriptors/variables/obmon.intpbn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intpbn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intpbp.json b/data_descriptors/variables/obmon.intpbp.json
index c12fe8637..eb6881cb7 100644
--- a/data_descriptors/variables/obmon.intpbp.json
+++ b/data_descriptors/variables/obmon.intpbp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intpbp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intpbsi.json b/data_descriptors/variables/obmon.intpbsi.json
index 278d08859..cfd795a1e 100644
--- a/data_descriptors/variables/obmon.intpbsi.json
+++ b/data_descriptors/variables/obmon.intpbsi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intpbsi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intpcalcite.json b/data_descriptors/variables/obmon.intpcalcite.json
index 0ef8dcf36..fb4b88d9c 100644
--- a/data_descriptors/variables/obmon.intpcalcite.json
+++ b/data_descriptors/variables/obmon.intpcalcite.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intpcalcite.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intpn2.json b/data_descriptors/variables/obmon.intpn2.json
index 34968b395..b114a11a9 100644
--- a/data_descriptors/variables/obmon.intpn2.json
+++ b/data_descriptors/variables/obmon.intpn2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intpn2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intpoc.json b/data_descriptors/variables/obmon.intpoc.json
index 1f7e40f67..b286ccd1f 100644
--- a/data_descriptors/variables/obmon.intpoc.json
+++ b/data_descriptors/variables/obmon.intpoc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intpoc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intpp.json b/data_descriptors/variables/obmon.intpp.json
index 844fb9e7f..fe8ceef8c 100644
--- a/data_descriptors/variables/obmon.intpp.json
+++ b/data_descriptors/variables/obmon.intpp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intpp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intppcalc.json b/data_descriptors/variables/obmon.intppcalc.json
index dfeb4b3c5..bf096153e 100644
--- a/data_descriptors/variables/obmon.intppcalc.json
+++ b/data_descriptors/variables/obmon.intppcalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intppcalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intppdiat.json b/data_descriptors/variables/obmon.intppdiat.json
index 6ed9a37fd..e7d312e13 100644
--- a/data_descriptors/variables/obmon.intppdiat.json
+++ b/data_descriptors/variables/obmon.intppdiat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intppdiat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intppdiaz.json b/data_descriptors/variables/obmon.intppdiaz.json
index 9ce821dad..e50927bfc 100644
--- a/data_descriptors/variables/obmon.intppdiaz.json
+++ b/data_descriptors/variables/obmon.intppdiaz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intppdiaz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intppmisc.json b/data_descriptors/variables/obmon.intppmisc.json
index a2a1e8e81..37ee14279 100644
--- a/data_descriptors/variables/obmon.intppmisc.json
+++ b/data_descriptors/variables/obmon.intppmisc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intppmisc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intppnitrate.json b/data_descriptors/variables/obmon.intppnitrate.json
index 61b783c0e..be83a8f02 100644
--- a/data_descriptors/variables/obmon.intppnitrate.json
+++ b/data_descriptors/variables/obmon.intppnitrate.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intppnitrate.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.intpppico.json b/data_descriptors/variables/obmon.intpppico.json
index 6d521c957..1f28f7eda 100644
--- a/data_descriptors/variables/obmon.intpppico.json
+++ b/data_descriptors/variables/obmon.intpppico.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.intpppico.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.limfecalc.json b/data_descriptors/variables/obmon.limfecalc.json
index 9348f03b0..706ba8fd2 100644
--- a/data_descriptors/variables/obmon.limfecalc.json
+++ b/data_descriptors/variables/obmon.limfecalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.limfecalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.limfediat.json b/data_descriptors/variables/obmon.limfediat.json
index 285bdf68c..71d5c8c15 100644
--- a/data_descriptors/variables/obmon.limfediat.json
+++ b/data_descriptors/variables/obmon.limfediat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.limfediat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.limfediaz.json b/data_descriptors/variables/obmon.limfediaz.json
index db50c03c6..357109808 100644
--- a/data_descriptors/variables/obmon.limfediaz.json
+++ b/data_descriptors/variables/obmon.limfediaz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.limfediaz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.limfemisc.json b/data_descriptors/variables/obmon.limfemisc.json
index 2c3190ce5..899042ecc 100644
--- a/data_descriptors/variables/obmon.limfemisc.json
+++ b/data_descriptors/variables/obmon.limfemisc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.limfemisc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.limfepico.json b/data_descriptors/variables/obmon.limfepico.json
index aafb955a9..f078e68b4 100644
--- a/data_descriptors/variables/obmon.limfepico.json
+++ b/data_descriptors/variables/obmon.limfepico.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.limfepico.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.limirrcalc.json b/data_descriptors/variables/obmon.limirrcalc.json
index f0550db6f..8d6bd061a 100644
--- a/data_descriptors/variables/obmon.limirrcalc.json
+++ b/data_descriptors/variables/obmon.limirrcalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.limirrcalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.limirrdiat.json b/data_descriptors/variables/obmon.limirrdiat.json
index 5da662e08..855be0066 100644
--- a/data_descriptors/variables/obmon.limirrdiat.json
+++ b/data_descriptors/variables/obmon.limirrdiat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.limirrdiat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.limirrdiaz.json b/data_descriptors/variables/obmon.limirrdiaz.json
index cf6de7823..b639e3f35 100644
--- a/data_descriptors/variables/obmon.limirrdiaz.json
+++ b/data_descriptors/variables/obmon.limirrdiaz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.limirrdiaz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.limirrmisc.json b/data_descriptors/variables/obmon.limirrmisc.json
index 85be39a39..93f02b7f8 100644
--- a/data_descriptors/variables/obmon.limirrmisc.json
+++ b/data_descriptors/variables/obmon.limirrmisc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.limirrmisc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.limirrpico.json b/data_descriptors/variables/obmon.limirrpico.json
index fa05a1467..571649d35 100644
--- a/data_descriptors/variables/obmon.limirrpico.json
+++ b/data_descriptors/variables/obmon.limirrpico.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.limirrpico.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.limncalc.json b/data_descriptors/variables/obmon.limncalc.json
index 7884d43b6..06a339c57 100644
--- a/data_descriptors/variables/obmon.limncalc.json
+++ b/data_descriptors/variables/obmon.limncalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.limncalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.limndiat.json b/data_descriptors/variables/obmon.limndiat.json
index 35b43d912..de8679091 100644
--- a/data_descriptors/variables/obmon.limndiat.json
+++ b/data_descriptors/variables/obmon.limndiat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.limndiat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.limndiaz.json b/data_descriptors/variables/obmon.limndiaz.json
index c01ab6e8b..242955436 100644
--- a/data_descriptors/variables/obmon.limndiaz.json
+++ b/data_descriptors/variables/obmon.limndiaz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.limndiaz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.limnmisc.json b/data_descriptors/variables/obmon.limnmisc.json
index 4756b47ce..59f5cf57a 100644
--- a/data_descriptors/variables/obmon.limnmisc.json
+++ b/data_descriptors/variables/obmon.limnmisc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.limnmisc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.limnpico.json b/data_descriptors/variables/obmon.limnpico.json
index 896bd389c..fda38ac52 100644
--- a/data_descriptors/variables/obmon.limnpico.json
+++ b/data_descriptors/variables/obmon.limnpico.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.limnpico.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.nh4os.json b/data_descriptors/variables/obmon.nh4os.json
index 86cc83b49..74a716a75 100644
--- a/data_descriptors/variables/obmon.nh4os.json
+++ b/data_descriptors/variables/obmon.nh4os.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.nh4os.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.no3os.json b/data_descriptors/variables/obmon.no3os.json
index 627df1364..5d4feeca1 100644
--- a/data_descriptors/variables/obmon.no3os.json
+++ b/data_descriptors/variables/obmon.no3os.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.no3os.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.o2min.json b/data_descriptors/variables/obmon.o2min.json
index 4b5d24359..813dffea5 100644
--- a/data_descriptors/variables/obmon.o2min.json
+++ b/data_descriptors/variables/obmon.o2min.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.o2min.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.o2os.json b/data_descriptors/variables/obmon.o2os.json
index e346371a9..5524183f0 100644
--- a/data_descriptors/variables/obmon.o2os.json
+++ b/data_descriptors/variables/obmon.o2os.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.o2os.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.o2satos.json b/data_descriptors/variables/obmon.o2satos.json
index 7bb6ac9a8..f96a1da78 100644
--- a/data_descriptors/variables/obmon.o2satos.json
+++ b/data_descriptors/variables/obmon.o2satos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.o2satos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.ocfriver.json b/data_descriptors/variables/obmon.ocfriver.json
index 86ef0c3eb..78abe6ee5 100644
--- a/data_descriptors/variables/obmon.ocfriver.json
+++ b/data_descriptors/variables/obmon.ocfriver.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.ocfriver.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.phabioos.json b/data_descriptors/variables/obmon.phabioos.json
index 7baad1d4d..207d82c5a 100644
--- a/data_descriptors/variables/obmon.phabioos.json
+++ b/data_descriptors/variables/obmon.phabioos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.phabioos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.phnatos.json b/data_descriptors/variables/obmon.phnatos.json
index 081ac3784..becc6394f 100644
--- a/data_descriptors/variables/obmon.phnatos.json
+++ b/data_descriptors/variables/obmon.phnatos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.phnatos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.phos.json b/data_descriptors/variables/obmon.phos.json
index e717ba64e..344bb23a2 100644
--- a/data_descriptors/variables/obmon.phos.json
+++ b/data_descriptors/variables/obmon.phos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.phos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.phycalcos.json b/data_descriptors/variables/obmon.phycalcos.json
index ce7fd04d0..2c4bfeb93 100644
--- a/data_descriptors/variables/obmon.phycalcos.json
+++ b/data_descriptors/variables/obmon.phycalcos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.phycalcos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.phycos.json b/data_descriptors/variables/obmon.phycos.json
index b1164c477..ed8a49db6 100644
--- a/data_descriptors/variables/obmon.phycos.json
+++ b/data_descriptors/variables/obmon.phycos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.phycos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.phydiatos.json b/data_descriptors/variables/obmon.phydiatos.json
index e66d075ca..cde1423b1 100644
--- a/data_descriptors/variables/obmon.phydiatos.json
+++ b/data_descriptors/variables/obmon.phydiatos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.phydiatos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.phydiazos.json b/data_descriptors/variables/obmon.phydiazos.json
index e77b7d852..8c9ce8200 100644
--- a/data_descriptors/variables/obmon.phydiazos.json
+++ b/data_descriptors/variables/obmon.phydiazos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.phydiazos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.phyfeos.json b/data_descriptors/variables/obmon.phyfeos.json
index 8730b44ea..e683e0487 100644
--- a/data_descriptors/variables/obmon.phyfeos.json
+++ b/data_descriptors/variables/obmon.phyfeos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.phyfeos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.phymiscos.json b/data_descriptors/variables/obmon.phymiscos.json
index f46f76a6a..b2af03f0e 100644
--- a/data_descriptors/variables/obmon.phymiscos.json
+++ b/data_descriptors/variables/obmon.phymiscos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.phymiscos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.phynos.json b/data_descriptors/variables/obmon.phynos.json
index 061173101..530e748ab 100644
--- a/data_descriptors/variables/obmon.phynos.json
+++ b/data_descriptors/variables/obmon.phynos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.phynos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.phypicoos.json b/data_descriptors/variables/obmon.phypicoos.json
index 2f75f3427..9ab211256 100644
--- a/data_descriptors/variables/obmon.phypicoos.json
+++ b/data_descriptors/variables/obmon.phypicoos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.phypicoos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.phypos.json b/data_descriptors/variables/obmon.phypos.json
index f4b7af1ff..fd848f0d4 100644
--- a/data_descriptors/variables/obmon.phypos.json
+++ b/data_descriptors/variables/obmon.phypos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.phypos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.physios.json b/data_descriptors/variables/obmon.physios.json
index 895f8a4b7..736e96468 100644
--- a/data_descriptors/variables/obmon.physios.json
+++ b/data_descriptors/variables/obmon.physios.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.physios.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.po4os.json b/data_descriptors/variables/obmon.po4os.json
index 87291172f..3dac77890 100644
--- a/data_descriptors/variables/obmon.po4os.json
+++ b/data_descriptors/variables/obmon.po4os.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.po4os.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.ponos.json b/data_descriptors/variables/obmon.ponos.json
index 7fb1c8817..7ca11cb38 100644
--- a/data_descriptors/variables/obmon.ponos.json
+++ b/data_descriptors/variables/obmon.ponos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.ponos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.popos.json b/data_descriptors/variables/obmon.popos.json
index bdc631a86..02f84bc08 100644
--- a/data_descriptors/variables/obmon.popos.json
+++ b/data_descriptors/variables/obmon.popos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.popos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.ppos.json b/data_descriptors/variables/obmon.ppos.json
index e03935325..ae5a9cf33 100644
--- a/data_descriptors/variables/obmon.ppos.json
+++ b/data_descriptors/variables/obmon.ppos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.ppos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.sios.json b/data_descriptors/variables/obmon.sios.json
index 7dfc30cb3..846f7937f 100644
--- a/data_descriptors/variables/obmon.sios.json
+++ b/data_descriptors/variables/obmon.sios.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.sios.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.spco2.json b/data_descriptors/variables/obmon.spco2.json
index 725604840..700e02b8d 100644
--- a/data_descriptors/variables/obmon.spco2.json
+++ b/data_descriptors/variables/obmon.spco2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.spco2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.spco2abio.json b/data_descriptors/variables/obmon.spco2abio.json
index 43a16e375..97f53b063 100644
--- a/data_descriptors/variables/obmon.spco2abio.json
+++ b/data_descriptors/variables/obmon.spco2abio.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.spco2abio.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.spco2nat.json b/data_descriptors/variables/obmon.spco2nat.json
index 3e2fa33d5..56ee50a35 100644
--- a/data_descriptors/variables/obmon.spco2nat.json
+++ b/data_descriptors/variables/obmon.spco2nat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.spco2nat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.talknatos.json b/data_descriptors/variables/obmon.talknatos.json
index 8603dad3b..5b0760ebb 100644
--- a/data_descriptors/variables/obmon.talknatos.json
+++ b/data_descriptors/variables/obmon.talknatos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.talknatos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.talkos.json b/data_descriptors/variables/obmon.talkos.json
index a81bcfab3..4a74c33e4 100644
--- a/data_descriptors/variables/obmon.talkos.json
+++ b/data_descriptors/variables/obmon.talkos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.talkos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.zmesoos.json b/data_descriptors/variables/obmon.zmesoos.json
index b09537f08..da0d1b328 100644
--- a/data_descriptors/variables/obmon.zmesoos.json
+++ b/data_descriptors/variables/obmon.zmesoos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.zmesoos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.zmicroos.json b/data_descriptors/variables/obmon.zmicroos.json
index 729c96443..c3f6b8df5 100644
--- a/data_descriptors/variables/obmon.zmicroos.json
+++ b/data_descriptors/variables/obmon.zmicroos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.zmicroos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.zmiscos.json b/data_descriptors/variables/obmon.zmiscos.json
index 4409fdac9..c7fc46513 100644
--- a/data_descriptors/variables/obmon.zmiscos.json
+++ b/data_descriptors/variables/obmon.zmiscos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.zmiscos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.zo2min.json b/data_descriptors/variables/obmon.zo2min.json
index 43a7be6c4..e701c1df3 100644
--- a/data_descriptors/variables/obmon.zo2min.json
+++ b/data_descriptors/variables/obmon.zo2min.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.zo2min.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.zoocos.json b/data_descriptors/variables/obmon.zoocos.json
index d58ffb08e..058602887 100644
--- a/data_descriptors/variables/obmon.zoocos.json
+++ b/data_descriptors/variables/obmon.zoocos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.zoocos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.zsatarag.json b/data_descriptors/variables/obmon.zsatarag.json
index 2c0efe319..3ab750991 100644
--- a/data_descriptors/variables/obmon.zsatarag.json
+++ b/data_descriptors/variables/obmon.zsatarag.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.zsatarag.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmon.zsatcalc.json b/data_descriptors/variables/obmon.zsatcalc.json
index 5c95b7686..3b0ce0d45 100644
--- a/data_descriptors/variables/obmon.zsatcalc.json
+++ b/data_descriptors/variables/obmon.zsatcalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmon.zsatcalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.arag.json b/data_descriptors/variables/obmonlev.arag.json
index d31309e45..f49a1ed0c 100644
--- a/data_descriptors/variables/obmonlev.arag.json
+++ b/data_descriptors/variables/obmonlev.arag.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.arag.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.bacc.json b/data_descriptors/variables/obmonlev.bacc.json
index 06bee76c7..55d3825dd 100644
--- a/data_descriptors/variables/obmonlev.bacc.json
+++ b/data_descriptors/variables/obmonlev.bacc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.bacc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.bfe.json b/data_descriptors/variables/obmonlev.bfe.json
index a4bc5f6ec..82a74a0e0 100644
--- a/data_descriptors/variables/obmonlev.bfe.json
+++ b/data_descriptors/variables/obmonlev.bfe.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.bfe.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.bsi.json b/data_descriptors/variables/obmonlev.bsi.json
index fb16e37ee..f1b3846f6 100644
--- a/data_descriptors/variables/obmonlev.bsi.json
+++ b/data_descriptors/variables/obmonlev.bsi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.bsi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.calc.json b/data_descriptors/variables/obmonlev.calc.json
index 71717d40a..081b4f2db 100644
--- a/data_descriptors/variables/obmonlev.calc.json
+++ b/data_descriptors/variables/obmonlev.calc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.calc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.chl.json b/data_descriptors/variables/obmonlev.chl.json
index 4a432990a..8985b54a7 100644
--- a/data_descriptors/variables/obmonlev.chl.json
+++ b/data_descriptors/variables/obmonlev.chl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.chl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.chlcalc.json b/data_descriptors/variables/obmonlev.chlcalc.json
index bfaa6d438..a11c0a1ca 100644
--- a/data_descriptors/variables/obmonlev.chlcalc.json
+++ b/data_descriptors/variables/obmonlev.chlcalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.chlcalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.chldiat.json b/data_descriptors/variables/obmonlev.chldiat.json
index f8da3c699..af4386984 100644
--- a/data_descriptors/variables/obmonlev.chldiat.json
+++ b/data_descriptors/variables/obmonlev.chldiat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.chldiat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.chldiaz.json b/data_descriptors/variables/obmonlev.chldiaz.json
index 707f677f1..add96baf6 100644
--- a/data_descriptors/variables/obmonlev.chldiaz.json
+++ b/data_descriptors/variables/obmonlev.chldiaz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.chldiaz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.chlmisc.json b/data_descriptors/variables/obmonlev.chlmisc.json
index 09ab31ef4..a3a466d27 100644
--- a/data_descriptors/variables/obmonlev.chlmisc.json
+++ b/data_descriptors/variables/obmonlev.chlmisc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.chlmisc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.chlpico.json b/data_descriptors/variables/obmonlev.chlpico.json
index 608e8d823..dabd8b249 100644
--- a/data_descriptors/variables/obmonlev.chlpico.json
+++ b/data_descriptors/variables/obmonlev.chlpico.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.chlpico.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.co3.json b/data_descriptors/variables/obmonlev.co3.json
index 29ebcb075..9f0c2872b 100644
--- a/data_descriptors/variables/obmonlev.co3.json
+++ b/data_descriptors/variables/obmonlev.co3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.co3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.co3abio.json b/data_descriptors/variables/obmonlev.co3abio.json
index 227e2497e..5e6ffe69b 100644
--- a/data_descriptors/variables/obmonlev.co3abio.json
+++ b/data_descriptors/variables/obmonlev.co3abio.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.co3abio.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.co3nat.json b/data_descriptors/variables/obmonlev.co3nat.json
index ae1b72e45..ba1ab8f3e 100644
--- a/data_descriptors/variables/obmonlev.co3nat.json
+++ b/data_descriptors/variables/obmonlev.co3nat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.co3nat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.co3satarag.json b/data_descriptors/variables/obmonlev.co3satarag.json
index d07b03c5c..b571bb366 100644
--- a/data_descriptors/variables/obmonlev.co3satarag.json
+++ b/data_descriptors/variables/obmonlev.co3satarag.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.co3satarag.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.co3satcalc.json b/data_descriptors/variables/obmonlev.co3satcalc.json
index d918ea46a..a83cf088d 100644
--- a/data_descriptors/variables/obmonlev.co3satcalc.json
+++ b/data_descriptors/variables/obmonlev.co3satcalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.co3satcalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.detoc.json b/data_descriptors/variables/obmonlev.detoc.json
index 41f87169b..e900a108c 100644
--- a/data_descriptors/variables/obmonlev.detoc.json
+++ b/data_descriptors/variables/obmonlev.detoc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.detoc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.dfe.json b/data_descriptors/variables/obmonlev.dfe.json
index 6f811a0be..1d6224a50 100644
--- a/data_descriptors/variables/obmonlev.dfe.json
+++ b/data_descriptors/variables/obmonlev.dfe.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.dfe.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.dissi13c.json b/data_descriptors/variables/obmonlev.dissi13c.json
index 21d7fb7e8..d0fe7ba4c 100644
--- a/data_descriptors/variables/obmonlev.dissi13c.json
+++ b/data_descriptors/variables/obmonlev.dissi13c.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.dissi13c.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.dissi14c.json b/data_descriptors/variables/obmonlev.dissi14c.json
index facf682c5..c09b4805c 100644
--- a/data_descriptors/variables/obmonlev.dissi14c.json
+++ b/data_descriptors/variables/obmonlev.dissi14c.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.dissi14c.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.dissi14cabio.json b/data_descriptors/variables/obmonlev.dissi14cabio.json
index 4dd7017d6..9f8c6ab6b 100644
--- a/data_descriptors/variables/obmonlev.dissi14cabio.json
+++ b/data_descriptors/variables/obmonlev.dissi14cabio.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.dissi14cabio.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.dissic.json b/data_descriptors/variables/obmonlev.dissic.json
index d5c46b4f9..920dae79f 100644
--- a/data_descriptors/variables/obmonlev.dissic.json
+++ b/data_descriptors/variables/obmonlev.dissic.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.dissic.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.dissicabio.json b/data_descriptors/variables/obmonlev.dissicabio.json
index 67a65833a..de613db3d 100644
--- a/data_descriptors/variables/obmonlev.dissicabio.json
+++ b/data_descriptors/variables/obmonlev.dissicabio.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.dissicabio.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.dissicnat.json b/data_descriptors/variables/obmonlev.dissicnat.json
index 1acb656c3..6d29cdb8e 100644
--- a/data_descriptors/variables/obmonlev.dissicnat.json
+++ b/data_descriptors/variables/obmonlev.dissicnat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.dissicnat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.dissoc.json b/data_descriptors/variables/obmonlev.dissoc.json
index 85e944a4f..7984b9c97 100644
--- a/data_descriptors/variables/obmonlev.dissoc.json
+++ b/data_descriptors/variables/obmonlev.dissoc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.dissoc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.dmso.json b/data_descriptors/variables/obmonlev.dmso.json
index 8e0f68ad0..001e8c38f 100644
--- a/data_descriptors/variables/obmonlev.dmso.json
+++ b/data_descriptors/variables/obmonlev.dmso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.dmso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.exparag.json b/data_descriptors/variables/obmonlev.exparag.json
index 1569a4bbc..cbb4ceb18 100644
--- a/data_descriptors/variables/obmonlev.exparag.json
+++ b/data_descriptors/variables/obmonlev.exparag.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.exparag.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.expc.json b/data_descriptors/variables/obmonlev.expc.json
index 3739facda..a97691fe9 100644
--- a/data_descriptors/variables/obmonlev.expc.json
+++ b/data_descriptors/variables/obmonlev.expc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.expc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.expcalc.json b/data_descriptors/variables/obmonlev.expcalc.json
index 042065f4c..f22eb4e68 100644
--- a/data_descriptors/variables/obmonlev.expcalc.json
+++ b/data_descriptors/variables/obmonlev.expcalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.expcalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.expfe.json b/data_descriptors/variables/obmonlev.expfe.json
index 0db8b8efa..a076ba7a9 100644
--- a/data_descriptors/variables/obmonlev.expfe.json
+++ b/data_descriptors/variables/obmonlev.expfe.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.expfe.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.expn.json b/data_descriptors/variables/obmonlev.expn.json
index f3634e32f..200553306 100644
--- a/data_descriptors/variables/obmonlev.expn.json
+++ b/data_descriptors/variables/obmonlev.expn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.expn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.expp.json b/data_descriptors/variables/obmonlev.expp.json
index d87114a9f..dbbd878e0 100644
--- a/data_descriptors/variables/obmonlev.expp.json
+++ b/data_descriptors/variables/obmonlev.expp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.expp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.expsi.json b/data_descriptors/variables/obmonlev.expsi.json
index 4fea3e876..b55de56b3 100644
--- a/data_descriptors/variables/obmonlev.expsi.json
+++ b/data_descriptors/variables/obmonlev.expsi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.expsi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.graz.json b/data_descriptors/variables/obmonlev.graz.json
index 13021eaf9..0faf6a6e0 100644
--- a/data_descriptors/variables/obmonlev.graz.json
+++ b/data_descriptors/variables/obmonlev.graz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.graz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.nh4.json b/data_descriptors/variables/obmonlev.nh4.json
index 5173d31a4..03110b2fd 100644
--- a/data_descriptors/variables/obmonlev.nh4.json
+++ b/data_descriptors/variables/obmonlev.nh4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.nh4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.no3.json b/data_descriptors/variables/obmonlev.no3.json
index 2cd7cf624..598a74f86 100644
--- a/data_descriptors/variables/obmonlev.no3.json
+++ b/data_descriptors/variables/obmonlev.no3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.no3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.o2.json b/data_descriptors/variables/obmonlev.o2.json
index 68865789c..f56548ab7 100644
--- a/data_descriptors/variables/obmonlev.o2.json
+++ b/data_descriptors/variables/obmonlev.o2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.o2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.o2sat.json b/data_descriptors/variables/obmonlev.o2sat.json
index b1445f79c..52e139ff9 100644
--- a/data_descriptors/variables/obmonlev.o2sat.json
+++ b/data_descriptors/variables/obmonlev.o2sat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.o2sat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.ph.json b/data_descriptors/variables/obmonlev.ph.json
index a1cadaafc..6572a8b7b 100644
--- a/data_descriptors/variables/obmonlev.ph.json
+++ b/data_descriptors/variables/obmonlev.ph.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.ph.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.phabio.json b/data_descriptors/variables/obmonlev.phabio.json
index 588ed0cd7..f1cfbe7b5 100644
--- a/data_descriptors/variables/obmonlev.phabio.json
+++ b/data_descriptors/variables/obmonlev.phabio.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.phabio.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.phnat.json b/data_descriptors/variables/obmonlev.phnat.json
index 14cd3dbc6..bddf9d336 100644
--- a/data_descriptors/variables/obmonlev.phnat.json
+++ b/data_descriptors/variables/obmonlev.phnat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.phnat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.phyc.json b/data_descriptors/variables/obmonlev.phyc.json
index 6d92a6b17..82c97ebdc 100644
--- a/data_descriptors/variables/obmonlev.phyc.json
+++ b/data_descriptors/variables/obmonlev.phyc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.phyc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.phycalc.json b/data_descriptors/variables/obmonlev.phycalc.json
index 3169729e4..f2c490fe5 100644
--- a/data_descriptors/variables/obmonlev.phycalc.json
+++ b/data_descriptors/variables/obmonlev.phycalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.phycalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.phydiat.json b/data_descriptors/variables/obmonlev.phydiat.json
index 7bf0d1213..ad480d4f8 100644
--- a/data_descriptors/variables/obmonlev.phydiat.json
+++ b/data_descriptors/variables/obmonlev.phydiat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.phydiat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.phydiaz.json b/data_descriptors/variables/obmonlev.phydiaz.json
index 68ec24596..452e17c85 100644
--- a/data_descriptors/variables/obmonlev.phydiaz.json
+++ b/data_descriptors/variables/obmonlev.phydiaz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.phydiaz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.phyfe.json b/data_descriptors/variables/obmonlev.phyfe.json
index fb6bd46cb..5d670d243 100644
--- a/data_descriptors/variables/obmonlev.phyfe.json
+++ b/data_descriptors/variables/obmonlev.phyfe.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.phyfe.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.phymisc.json b/data_descriptors/variables/obmonlev.phymisc.json
index c0d630e55..93f14fce8 100644
--- a/data_descriptors/variables/obmonlev.phymisc.json
+++ b/data_descriptors/variables/obmonlev.phymisc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.phymisc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.phyn.json b/data_descriptors/variables/obmonlev.phyn.json
index fb1c4f1eb..e70d8de03 100644
--- a/data_descriptors/variables/obmonlev.phyn.json
+++ b/data_descriptors/variables/obmonlev.phyn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.phyn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.phyp.json b/data_descriptors/variables/obmonlev.phyp.json
index d626df99a..620e0c7bd 100644
--- a/data_descriptors/variables/obmonlev.phyp.json
+++ b/data_descriptors/variables/obmonlev.phyp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.phyp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.phypico.json b/data_descriptors/variables/obmonlev.phypico.json
index 4541c779a..0bad0cd76 100644
--- a/data_descriptors/variables/obmonlev.phypico.json
+++ b/data_descriptors/variables/obmonlev.phypico.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.phypico.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.physi.json b/data_descriptors/variables/obmonlev.physi.json
index 69c4b7fce..ca7e34e8d 100644
--- a/data_descriptors/variables/obmonlev.physi.json
+++ b/data_descriptors/variables/obmonlev.physi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.physi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.po4.json b/data_descriptors/variables/obmonlev.po4.json
index 2c36ff439..1202b1885 100644
--- a/data_descriptors/variables/obmonlev.po4.json
+++ b/data_descriptors/variables/obmonlev.po4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.po4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.pon.json b/data_descriptors/variables/obmonlev.pon.json
index 57bbe3fbb..1971dd79b 100644
--- a/data_descriptors/variables/obmonlev.pon.json
+++ b/data_descriptors/variables/obmonlev.pon.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.pon.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.pop.json b/data_descriptors/variables/obmonlev.pop.json
index 8b2d9da7a..c11f33f67 100644
--- a/data_descriptors/variables/obmonlev.pop.json
+++ b/data_descriptors/variables/obmonlev.pop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.pop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.pp.json b/data_descriptors/variables/obmonlev.pp.json
index 97d84f870..d665f94c5 100644
--- a/data_descriptors/variables/obmonlev.pp.json
+++ b/data_descriptors/variables/obmonlev.pp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.pp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.ppcalc.json b/data_descriptors/variables/obmonlev.ppcalc.json
index 6104d1739..19b1aef4a 100644
--- a/data_descriptors/variables/obmonlev.ppcalc.json
+++ b/data_descriptors/variables/obmonlev.ppcalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.ppcalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.ppdiat.json b/data_descriptors/variables/obmonlev.ppdiat.json
index 8117812f5..77c7125ad 100644
--- a/data_descriptors/variables/obmonlev.ppdiat.json
+++ b/data_descriptors/variables/obmonlev.ppdiat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.ppdiat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.ppdiaz.json b/data_descriptors/variables/obmonlev.ppdiaz.json
index da2abc5a5..e22095619 100644
--- a/data_descriptors/variables/obmonlev.ppdiaz.json
+++ b/data_descriptors/variables/obmonlev.ppdiaz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.ppdiaz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.ppmisc.json b/data_descriptors/variables/obmonlev.ppmisc.json
index cfc3e316f..c83d28259 100644
--- a/data_descriptors/variables/obmonlev.ppmisc.json
+++ b/data_descriptors/variables/obmonlev.ppmisc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.ppmisc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.pppico.json b/data_descriptors/variables/obmonlev.pppico.json
index 913afc0c8..c09c130c9 100644
--- a/data_descriptors/variables/obmonlev.pppico.json
+++ b/data_descriptors/variables/obmonlev.pppico.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.pppico.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.si.json b/data_descriptors/variables/obmonlev.si.json
index 1bf7d8d3b..1dc769508 100644
--- a/data_descriptors/variables/obmonlev.si.json
+++ b/data_descriptors/variables/obmonlev.si.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.si.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.talk.json b/data_descriptors/variables/obmonlev.talk.json
index f4c6cadfa..34b9e85f3 100644
--- a/data_descriptors/variables/obmonlev.talk.json
+++ b/data_descriptors/variables/obmonlev.talk.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.talk.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.talknat.json b/data_descriptors/variables/obmonlev.talknat.json
index e1d2caf07..d5d042767 100644
--- a/data_descriptors/variables/obmonlev.talknat.json
+++ b/data_descriptors/variables/obmonlev.talknat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.talknat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.zmeso.json b/data_descriptors/variables/obmonlev.zmeso.json
index 0db0c0ea1..73bef9117 100644
--- a/data_descriptors/variables/obmonlev.zmeso.json
+++ b/data_descriptors/variables/obmonlev.zmeso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.zmeso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.zmicro.json b/data_descriptors/variables/obmonlev.zmicro.json
index 2bdba2b7c..fe0dd1caf 100644
--- a/data_descriptors/variables/obmonlev.zmicro.json
+++ b/data_descriptors/variables/obmonlev.zmicro.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.zmicro.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.zmisc.json b/data_descriptors/variables/obmonlev.zmisc.json
index 3b70d6b1c..fd6ab5e93 100644
--- a/data_descriptors/variables/obmonlev.zmisc.json
+++ b/data_descriptors/variables/obmonlev.zmisc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.zmisc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obmonlev.zooc.json b/data_descriptors/variables/obmonlev.zooc.json
index 02899a4d7..7f4caf9b8 100644
--- a/data_descriptors/variables/obmonlev.zooc.json
+++ b/data_descriptors/variables/obmonlev.zooc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obmonlev.zooc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyr.fg13co2.json b/data_descriptors/variables/obyr.fg13co2.json
index 0b0dfc7f8..17014d426 100644
--- a/data_descriptors/variables/obyr.fg13co2.json
+++ b/data_descriptors/variables/obyr.fg13co2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyr.fg13co2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyr.fg14co2abio.json b/data_descriptors/variables/obyr.fg14co2abio.json
index 2c795f986..e992ef9bf 100644
--- a/data_descriptors/variables/obyr.fg14co2abio.json
+++ b/data_descriptors/variables/obyr.fg14co2abio.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyr.fg14co2abio.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyr.fgco2.json b/data_descriptors/variables/obyr.fgco2.json
index bddf98137..6404e6e3a 100644
--- a/data_descriptors/variables/obyr.fgco2.json
+++ b/data_descriptors/variables/obyr.fgco2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyr.fgco2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyr.fgco2abio.json b/data_descriptors/variables/obyr.fgco2abio.json
index 950ef6f86..97827d6e3 100644
--- a/data_descriptors/variables/obyr.fgco2abio.json
+++ b/data_descriptors/variables/obyr.fgco2abio.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyr.fgco2abio.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyr.fgco2nat.json b/data_descriptors/variables/obyr.fgco2nat.json
index ae7ec475d..f7036f1ea 100644
--- a/data_descriptors/variables/obyr.fgco2nat.json
+++ b/data_descriptors/variables/obyr.fgco2nat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyr.fgco2nat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.arag.json b/data_descriptors/variables/obyrlev.arag.json
index 9a0bae439..2549dfa88 100644
--- a/data_descriptors/variables/obyrlev.arag.json
+++ b/data_descriptors/variables/obyrlev.arag.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.arag.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.bacc.json b/data_descriptors/variables/obyrlev.bacc.json
index 15a5b8b09..7276f1b4f 100644
--- a/data_descriptors/variables/obyrlev.bacc.json
+++ b/data_descriptors/variables/obyrlev.bacc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.bacc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.bddtalk.json b/data_descriptors/variables/obyrlev.bddtalk.json
index 5677a4747..251964023 100644
--- a/data_descriptors/variables/obyrlev.bddtalk.json
+++ b/data_descriptors/variables/obyrlev.bddtalk.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.bddtalk.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.bddtdic.json b/data_descriptors/variables/obyrlev.bddtdic.json
index f212d5c33..78f1c40c6 100644
--- a/data_descriptors/variables/obyrlev.bddtdic.json
+++ b/data_descriptors/variables/obyrlev.bddtdic.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.bddtdic.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.bddtdife.json b/data_descriptors/variables/obyrlev.bddtdife.json
index 195262c1f..61d17bb5c 100644
--- a/data_descriptors/variables/obyrlev.bddtdife.json
+++ b/data_descriptors/variables/obyrlev.bddtdife.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.bddtdife.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.bddtdin.json b/data_descriptors/variables/obyrlev.bddtdin.json
index d66eb121c..30e77a59f 100644
--- a/data_descriptors/variables/obyrlev.bddtdin.json
+++ b/data_descriptors/variables/obyrlev.bddtdin.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.bddtdin.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.bddtdip.json b/data_descriptors/variables/obyrlev.bddtdip.json
index 27a2ae50f..62cad466c 100644
--- a/data_descriptors/variables/obyrlev.bddtdip.json
+++ b/data_descriptors/variables/obyrlev.bddtdip.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.bddtdip.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.bddtdisi.json b/data_descriptors/variables/obyrlev.bddtdisi.json
index 313fdab95..add410da3 100644
--- a/data_descriptors/variables/obyrlev.bddtdisi.json
+++ b/data_descriptors/variables/obyrlev.bddtdisi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.bddtdisi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.bfe.json b/data_descriptors/variables/obyrlev.bfe.json
index f4fac1389..8309c6b23 100644
--- a/data_descriptors/variables/obyrlev.bfe.json
+++ b/data_descriptors/variables/obyrlev.bfe.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.bfe.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.bsi.json b/data_descriptors/variables/obyrlev.bsi.json
index fde57cd7a..57cd90fae 100644
--- a/data_descriptors/variables/obyrlev.bsi.json
+++ b/data_descriptors/variables/obyrlev.bsi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.bsi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.calc.json b/data_descriptors/variables/obyrlev.calc.json
index 5a415a04f..76f14e02e 100644
--- a/data_descriptors/variables/obyrlev.calc.json
+++ b/data_descriptors/variables/obyrlev.calc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.calc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.chl.json b/data_descriptors/variables/obyrlev.chl.json
index 76d4081f5..a3e25daa7 100644
--- a/data_descriptors/variables/obyrlev.chl.json
+++ b/data_descriptors/variables/obyrlev.chl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.chl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.chlcalc.json b/data_descriptors/variables/obyrlev.chlcalc.json
index cd27667dc..6da16b7da 100644
--- a/data_descriptors/variables/obyrlev.chlcalc.json
+++ b/data_descriptors/variables/obyrlev.chlcalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.chlcalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.chldiat.json b/data_descriptors/variables/obyrlev.chldiat.json
index d53fa2ae3..17b83b682 100644
--- a/data_descriptors/variables/obyrlev.chldiat.json
+++ b/data_descriptors/variables/obyrlev.chldiat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.chldiat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.chldiaz.json b/data_descriptors/variables/obyrlev.chldiaz.json
index a0943df58..6d2586068 100644
--- a/data_descriptors/variables/obyrlev.chldiaz.json
+++ b/data_descriptors/variables/obyrlev.chldiaz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.chldiaz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.chlmisc.json b/data_descriptors/variables/obyrlev.chlmisc.json
index f3b30b155..8a4be28df 100644
--- a/data_descriptors/variables/obyrlev.chlmisc.json
+++ b/data_descriptors/variables/obyrlev.chlmisc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.chlmisc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.chlpico.json b/data_descriptors/variables/obyrlev.chlpico.json
index e7f05d8d6..39bded906 100644
--- a/data_descriptors/variables/obyrlev.chlpico.json
+++ b/data_descriptors/variables/obyrlev.chlpico.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.chlpico.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.co3.json b/data_descriptors/variables/obyrlev.co3.json
index 65956d11d..22ef5304f 100644
--- a/data_descriptors/variables/obyrlev.co3.json
+++ b/data_descriptors/variables/obyrlev.co3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.co3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.co3abio.json b/data_descriptors/variables/obyrlev.co3abio.json
index 59afcb6d9..62539db49 100644
--- a/data_descriptors/variables/obyrlev.co3abio.json
+++ b/data_descriptors/variables/obyrlev.co3abio.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.co3abio.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.co3nat.json b/data_descriptors/variables/obyrlev.co3nat.json
index 3619a54a1..bd83124a5 100644
--- a/data_descriptors/variables/obyrlev.co3nat.json
+++ b/data_descriptors/variables/obyrlev.co3nat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.co3nat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.co3satarag.json b/data_descriptors/variables/obyrlev.co3satarag.json
index 41bf1ac8e..9475212f0 100644
--- a/data_descriptors/variables/obyrlev.co3satarag.json
+++ b/data_descriptors/variables/obyrlev.co3satarag.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.co3satarag.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.co3satcalc.json b/data_descriptors/variables/obyrlev.co3satcalc.json
index 41c109201..c149e18f3 100644
--- a/data_descriptors/variables/obyrlev.co3satcalc.json
+++ b/data_descriptors/variables/obyrlev.co3satcalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.co3satcalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.darag.json b/data_descriptors/variables/obyrlev.darag.json
index 60fbcc91a..2a0835bc6 100644
--- a/data_descriptors/variables/obyrlev.darag.json
+++ b/data_descriptors/variables/obyrlev.darag.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.darag.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.dcalc.json b/data_descriptors/variables/obyrlev.dcalc.json
index e7fa313c8..de83a4a7b 100644
--- a/data_descriptors/variables/obyrlev.dcalc.json
+++ b/data_descriptors/variables/obyrlev.dcalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.dcalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.detoc.json b/data_descriptors/variables/obyrlev.detoc.json
index 2db7b1753..99cbfb41e 100644
--- a/data_descriptors/variables/obyrlev.detoc.json
+++ b/data_descriptors/variables/obyrlev.detoc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.detoc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.dfe.json b/data_descriptors/variables/obyrlev.dfe.json
index fa8ab2c1d..e69cf3b73 100644
--- a/data_descriptors/variables/obyrlev.dfe.json
+++ b/data_descriptors/variables/obyrlev.dfe.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.dfe.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.dissi13c.json b/data_descriptors/variables/obyrlev.dissi13c.json
index 2223710c2..00598ab9c 100644
--- a/data_descriptors/variables/obyrlev.dissi13c.json
+++ b/data_descriptors/variables/obyrlev.dissi13c.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.dissi13c.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.dissi14cabio.json b/data_descriptors/variables/obyrlev.dissi14cabio.json
index 055381db1..fc39573d0 100644
--- a/data_descriptors/variables/obyrlev.dissi14cabio.json
+++ b/data_descriptors/variables/obyrlev.dissi14cabio.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.dissi14cabio.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.dissic.json b/data_descriptors/variables/obyrlev.dissic.json
index bacf5ee49..0bcbe0a87 100644
--- a/data_descriptors/variables/obyrlev.dissic.json
+++ b/data_descriptors/variables/obyrlev.dissic.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.dissic.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.dissicabio.json b/data_descriptors/variables/obyrlev.dissicabio.json
index 35156fc62..74e620618 100644
--- a/data_descriptors/variables/obyrlev.dissicabio.json
+++ b/data_descriptors/variables/obyrlev.dissicabio.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.dissicabio.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.dissicnat.json b/data_descriptors/variables/obyrlev.dissicnat.json
index 08b73a5a0..cf9305de8 100644
--- a/data_descriptors/variables/obyrlev.dissicnat.json
+++ b/data_descriptors/variables/obyrlev.dissicnat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.dissicnat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.dissoc.json b/data_descriptors/variables/obyrlev.dissoc.json
index f18d3362f..d18ee0c3c 100644
--- a/data_descriptors/variables/obyrlev.dissoc.json
+++ b/data_descriptors/variables/obyrlev.dissoc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.dissoc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.dmso.json b/data_descriptors/variables/obyrlev.dmso.json
index 37750ee3f..5c5cca51f 100644
--- a/data_descriptors/variables/obyrlev.dmso.json
+++ b/data_descriptors/variables/obyrlev.dmso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.dmso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.exparag.json b/data_descriptors/variables/obyrlev.exparag.json
index e98a9b487..65e47363c 100644
--- a/data_descriptors/variables/obyrlev.exparag.json
+++ b/data_descriptors/variables/obyrlev.exparag.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.exparag.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.expc.json b/data_descriptors/variables/obyrlev.expc.json
index a5f7adae9..a21b5e076 100644
--- a/data_descriptors/variables/obyrlev.expc.json
+++ b/data_descriptors/variables/obyrlev.expc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.expc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.expcalc.json b/data_descriptors/variables/obyrlev.expcalc.json
index 82f8cd265..55383a10d 100644
--- a/data_descriptors/variables/obyrlev.expcalc.json
+++ b/data_descriptors/variables/obyrlev.expcalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.expcalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.expfe.json b/data_descriptors/variables/obyrlev.expfe.json
index 0406f9abb..088cf78c6 100644
--- a/data_descriptors/variables/obyrlev.expfe.json
+++ b/data_descriptors/variables/obyrlev.expfe.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.expfe.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.expn.json b/data_descriptors/variables/obyrlev.expn.json
index 09f7aec80..d53c95632 100644
--- a/data_descriptors/variables/obyrlev.expn.json
+++ b/data_descriptors/variables/obyrlev.expn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.expn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.expp.json b/data_descriptors/variables/obyrlev.expp.json
index b85e00b26..952514672 100644
--- a/data_descriptors/variables/obyrlev.expp.json
+++ b/data_descriptors/variables/obyrlev.expp.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.expp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.expsi.json b/data_descriptors/variables/obyrlev.expsi.json
index 3ca17800b..0bd1346e8 100644
--- a/data_descriptors/variables/obyrlev.expsi.json
+++ b/data_descriptors/variables/obyrlev.expsi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.expsi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.fediss.json b/data_descriptors/variables/obyrlev.fediss.json
index 6ab8db1fb..65a740154 100644
--- a/data_descriptors/variables/obyrlev.fediss.json
+++ b/data_descriptors/variables/obyrlev.fediss.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.fediss.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.fescav.json b/data_descriptors/variables/obyrlev.fescav.json
index 70e86abaa..599b93455 100644
--- a/data_descriptors/variables/obyrlev.fescav.json
+++ b/data_descriptors/variables/obyrlev.fescav.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.fescav.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.graz.json b/data_descriptors/variables/obyrlev.graz.json
index a5d9bf428..792f76f45 100644
--- a/data_descriptors/variables/obyrlev.graz.json
+++ b/data_descriptors/variables/obyrlev.graz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.graz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.nh4.json b/data_descriptors/variables/obyrlev.nh4.json
index 10f3f34c9..e87f60cb2 100644
--- a/data_descriptors/variables/obyrlev.nh4.json
+++ b/data_descriptors/variables/obyrlev.nh4.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.nh4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.no3.json b/data_descriptors/variables/obyrlev.no3.json
index 8b6c8047f..a72ed3d74 100644
--- a/data_descriptors/variables/obyrlev.no3.json
+++ b/data_descriptors/variables/obyrlev.no3.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.no3.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.o2.json b/data_descriptors/variables/obyrlev.o2.json
index 5a66686d2..126d1c0d2 100644
--- a/data_descriptors/variables/obyrlev.o2.json
+++ b/data_descriptors/variables/obyrlev.o2.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.o2.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.o2sat.json b/data_descriptors/variables/obyrlev.o2sat.json
index f7dff4cdd..36e851a9d 100644
--- a/data_descriptors/variables/obyrlev.o2sat.json
+++ b/data_descriptors/variables/obyrlev.o2sat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.o2sat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.parag.json b/data_descriptors/variables/obyrlev.parag.json
index 0bdab6cb0..5ad59c686 100644
--- a/data_descriptors/variables/obyrlev.parag.json
+++ b/data_descriptors/variables/obyrlev.parag.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.parag.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.pbfe.json b/data_descriptors/variables/obyrlev.pbfe.json
index 79c5b229c..1af7ece00 100644
--- a/data_descriptors/variables/obyrlev.pbfe.json
+++ b/data_descriptors/variables/obyrlev.pbfe.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.pbfe.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.pbsi.json b/data_descriptors/variables/obyrlev.pbsi.json
index 3595cdb9e..224adb195 100644
--- a/data_descriptors/variables/obyrlev.pbsi.json
+++ b/data_descriptors/variables/obyrlev.pbsi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.pbsi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.pcalc.json b/data_descriptors/variables/obyrlev.pcalc.json
index f70bd78fd..7403e037e 100644
--- a/data_descriptors/variables/obyrlev.pcalc.json
+++ b/data_descriptors/variables/obyrlev.pcalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.pcalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.ph.json b/data_descriptors/variables/obyrlev.ph.json
index 62f1abd2f..6f41befc1 100644
--- a/data_descriptors/variables/obyrlev.ph.json
+++ b/data_descriptors/variables/obyrlev.ph.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.ph.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.phabio.json b/data_descriptors/variables/obyrlev.phabio.json
index b94c9c33b..92a6ced18 100644
--- a/data_descriptors/variables/obyrlev.phabio.json
+++ b/data_descriptors/variables/obyrlev.phabio.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.phabio.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.phnat.json b/data_descriptors/variables/obyrlev.phnat.json
index 2b64977b5..7c65474a5 100644
--- a/data_descriptors/variables/obyrlev.phnat.json
+++ b/data_descriptors/variables/obyrlev.phnat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.phnat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.phyc.json b/data_descriptors/variables/obyrlev.phyc.json
index 5df792ab4..35aa8cecf 100644
--- a/data_descriptors/variables/obyrlev.phyc.json
+++ b/data_descriptors/variables/obyrlev.phyc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.phyc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.phycalc.json b/data_descriptors/variables/obyrlev.phycalc.json
index 42ec5d64b..c755359c2 100644
--- a/data_descriptors/variables/obyrlev.phycalc.json
+++ b/data_descriptors/variables/obyrlev.phycalc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.phycalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.phydiat.json b/data_descriptors/variables/obyrlev.phydiat.json
index 4ab513112..a604e5285 100644
--- a/data_descriptors/variables/obyrlev.phydiat.json
+++ b/data_descriptors/variables/obyrlev.phydiat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.phydiat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.phydiaz.json b/data_descriptors/variables/obyrlev.phydiaz.json
index 05055e27f..96ba66dae 100644
--- a/data_descriptors/variables/obyrlev.phydiaz.json
+++ b/data_descriptors/variables/obyrlev.phydiaz.json
@@ -2,7 +2,7 @@
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   "id": "obyrlev.phydiaz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.phyfe.json b/data_descriptors/variables/obyrlev.phyfe.json
index 183f34fcf..f6a14e6c0 100644
--- a/data_descriptors/variables/obyrlev.phyfe.json
+++ b/data_descriptors/variables/obyrlev.phyfe.json
@@ -2,7 +2,7 @@
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   "id": "obyrlev.phyfe.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.phymisc.json b/data_descriptors/variables/obyrlev.phymisc.json
index 1fce7f3c0..b4371809b 100644
--- a/data_descriptors/variables/obyrlev.phymisc.json
+++ b/data_descriptors/variables/obyrlev.phymisc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.phymisc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.phyn.json b/data_descriptors/variables/obyrlev.phyn.json
index eaacd8928..47e175cf6 100644
--- a/data_descriptors/variables/obyrlev.phyn.json
+++ b/data_descriptors/variables/obyrlev.phyn.json
@@ -2,7 +2,7 @@
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   "id": "obyrlev.phyn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.phyp.json b/data_descriptors/variables/obyrlev.phyp.json
index de677b8f2..8cab4b58f 100644
--- a/data_descriptors/variables/obyrlev.phyp.json
+++ b/data_descriptors/variables/obyrlev.phyp.json
@@ -2,7 +2,7 @@
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   "id": "obyrlev.phyp.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.phypico.json b/data_descriptors/variables/obyrlev.phypico.json
index fd65bb6a3..1b6dc3048 100644
--- a/data_descriptors/variables/obyrlev.phypico.json
+++ b/data_descriptors/variables/obyrlev.phypico.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.phypico.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.physi.json b/data_descriptors/variables/obyrlev.physi.json
index 32b4e96c7..0cf2ea38f 100644
--- a/data_descriptors/variables/obyrlev.physi.json
+++ b/data_descriptors/variables/obyrlev.physi.json
@@ -2,7 +2,7 @@
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   "id": "obyrlev.physi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.pnitrate.json b/data_descriptors/variables/obyrlev.pnitrate.json
index e041a900a..d1bd9c2a0 100644
--- a/data_descriptors/variables/obyrlev.pnitrate.json
+++ b/data_descriptors/variables/obyrlev.pnitrate.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.pnitrate.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.po4.json b/data_descriptors/variables/obyrlev.po4.json
index 681db6be5..d0e06f9e1 100644
--- a/data_descriptors/variables/obyrlev.po4.json
+++ b/data_descriptors/variables/obyrlev.po4.json
@@ -2,7 +2,7 @@
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   "id": "obyrlev.po4.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.pon.json b/data_descriptors/variables/obyrlev.pon.json
index eacf32e91..cd7740ec1 100644
--- a/data_descriptors/variables/obyrlev.pon.json
+++ b/data_descriptors/variables/obyrlev.pon.json
@@ -2,7 +2,7 @@
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   "id": "obyrlev.pon.json",
   "type": "mip-variable",
-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.pop.json b/data_descriptors/variables/obyrlev.pop.json
index f99e8bcfb..ede0fe05c 100644
--- a/data_descriptors/variables/obyrlev.pop.json
+++ b/data_descriptors/variables/obyrlev.pop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.pop.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/obyrlev.pp.json b/data_descriptors/variables/obyrlev.pp.json
index 741026dcf..c066cdab0 100644
--- a/data_descriptors/variables/obyrlev.pp.json
+++ b/data_descriptors/variables/obyrlev.pp.json
@@ -2,7 +2,7 @@
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   "id": "obyrlev.pp.json",
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-  "mip-tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.ppcalc.json b/data_descriptors/variables/obyrlev.ppcalc.json
index 667450856..e739cbe3f 100644
--- a/data_descriptors/variables/obyrlev.ppcalc.json
+++ b/data_descriptors/variables/obyrlev.ppcalc.json
@@ -2,7 +2,7 @@
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   "id": "obyrlev.ppcalc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.ppdiat.json b/data_descriptors/variables/obyrlev.ppdiat.json
index ab72e034a..fde67f856 100644
--- a/data_descriptors/variables/obyrlev.ppdiat.json
+++ b/data_descriptors/variables/obyrlev.ppdiat.json
@@ -2,7 +2,7 @@
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   "id": "obyrlev.ppdiat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.ppdiaz.json b/data_descriptors/variables/obyrlev.ppdiaz.json
index 0ae8634a8..a574162b7 100644
--- a/data_descriptors/variables/obyrlev.ppdiaz.json
+++ b/data_descriptors/variables/obyrlev.ppdiaz.json
@@ -2,7 +2,7 @@
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   "id": "obyrlev.ppdiaz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.ppmisc.json b/data_descriptors/variables/obyrlev.ppmisc.json
index e303bf2c3..230953dea 100644
--- a/data_descriptors/variables/obyrlev.ppmisc.json
+++ b/data_descriptors/variables/obyrlev.ppmisc.json
@@ -2,7 +2,7 @@
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   "id": "obyrlev.ppmisc.json",
   "type": "mip-variable",
-  "mip-tables": [
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diff --git a/data_descriptors/variables/obyrlev.pppico.json b/data_descriptors/variables/obyrlev.pppico.json
index 263b0ec10..6ace5e97e 100644
--- a/data_descriptors/variables/obyrlev.pppico.json
+++ b/data_descriptors/variables/obyrlev.pppico.json
@@ -2,7 +2,7 @@
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   "id": "obyrlev.pppico.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.remoc.json b/data_descriptors/variables/obyrlev.remoc.json
index 1f38e99a2..cebf5b4b7 100644
--- a/data_descriptors/variables/obyrlev.remoc.json
+++ b/data_descriptors/variables/obyrlev.remoc.json
@@ -2,7 +2,7 @@
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   "id": "obyrlev.remoc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "obyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.si.json b/data_descriptors/variables/obyrlev.si.json
index 76772d7b0..8a7a79513 100644
--- a/data_descriptors/variables/obyrlev.si.json
+++ b/data_descriptors/variables/obyrlev.si.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.si.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.talk.json b/data_descriptors/variables/obyrlev.talk.json
index 8e6c63e0f..bc65b877f 100644
--- a/data_descriptors/variables/obyrlev.talk.json
+++ b/data_descriptors/variables/obyrlev.talk.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.talk.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.talknat.json b/data_descriptors/variables/obyrlev.talknat.json
index 92e4b56b0..4d458da3a 100644
--- a/data_descriptors/variables/obyrlev.talknat.json
+++ b/data_descriptors/variables/obyrlev.talknat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.talknat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.zmeso.json b/data_descriptors/variables/obyrlev.zmeso.json
index b0275201a..9ec377e00 100644
--- a/data_descriptors/variables/obyrlev.zmeso.json
+++ b/data_descriptors/variables/obyrlev.zmeso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.zmeso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.zmicro.json b/data_descriptors/variables/obyrlev.zmicro.json
index 0b7d8d5c7..a5cf89c72 100644
--- a/data_descriptors/variables/obyrlev.zmicro.json
+++ b/data_descriptors/variables/obyrlev.zmicro.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.zmicro.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.zmisc.json b/data_descriptors/variables/obyrlev.zmisc.json
index 6f2969187..f35ac1089 100644
--- a/data_descriptors/variables/obyrlev.zmisc.json
+++ b/data_descriptors/variables/obyrlev.zmisc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.zmisc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/obyrlev.zooc.json b/data_descriptors/variables/obyrlev.zooc.json
index 35a391d9b..5ff3eb648 100644
--- a/data_descriptors/variables/obyrlev.zooc.json
+++ b/data_descriptors/variables/obyrlev.zooc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "obyrlev.zooc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/op3hrpt.tos.json b/data_descriptors/variables/op3hrpt.tos.json
index 425f2f9e1..e82becfb6 100644
--- a/data_descriptors/variables/op3hrpt.tos.json
+++ b/data_descriptors/variables/op3hrpt.tos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "op3hrpt.tos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "op3hrpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opday.mlotst.json b/data_descriptors/variables/opday.mlotst.json
index 16f2bd4cf..05780ad7d 100644
--- a/data_descriptors/variables/opday.mlotst.json
+++ b/data_descriptors/variables/opday.mlotst.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opday.mlotst.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opday.omldamax.json b/data_descriptors/variables/opday.omldamax.json
index b9b89a178..7ec39b8f2 100644
--- a/data_descriptors/variables/opday.omldamax.json
+++ b/data_descriptors/variables/opday.omldamax.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opday.omldamax.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opday.sos.json b/data_descriptors/variables/opday.sos.json
index 2c8cfbe52..bf2e80761 100644
--- a/data_descriptors/variables/opday.sos.json
+++ b/data_descriptors/variables/opday.sos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opday.sos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opday.sossq.json b/data_descriptors/variables/opday.sossq.json
index 99a588ad3..44bd8f025 100644
--- a/data_descriptors/variables/opday.sossq.json
+++ b/data_descriptors/variables/opday.sossq.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opday.sossq.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opday.t20d.json b/data_descriptors/variables/opday.t20d.json
index 080789742..d6775c0d1 100644
--- a/data_descriptors/variables/opday.t20d.json
+++ b/data_descriptors/variables/opday.t20d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opday.t20d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opday.tos.json b/data_descriptors/variables/opday.tos.json
index 442f50677..c01e8f3ca 100644
--- a/data_descriptors/variables/opday.tos.json
+++ b/data_descriptors/variables/opday.tos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opday.tos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opday.tossq.json b/data_descriptors/variables/opday.tossq.json
index 7d8475987..ddc414b0a 100644
--- a/data_descriptors/variables/opday.tossq.json
+++ b/data_descriptors/variables/opday.tossq.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opday.tossq.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.bigthetaoga.json b/data_descriptors/variables/opdec.bigthetaoga.json
index 4167dd000..19b477a77 100644
--- a/data_descriptors/variables/opdec.bigthetaoga.json
+++ b/data_descriptors/variables/opdec.bigthetaoga.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.bigthetaoga.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.hfds.json b/data_descriptors/variables/opdec.hfds.json
index 23e4f889f..7844b14ba 100644
--- a/data_descriptors/variables/opdec.hfds.json
+++ b/data_descriptors/variables/opdec.hfds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.hfds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
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       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.masso.json b/data_descriptors/variables/opdec.masso.json
index ea8d1baff..8754350b4 100644
--- a/data_descriptors/variables/opdec.masso.json
+++ b/data_descriptors/variables/opdec.masso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.masso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdec.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.msftyrho.json b/data_descriptors/variables/opdec.msftyrho.json
index c783412e6..c0181e7e3 100644
--- a/data_descriptors/variables/opdec.msftyrho.json
+++ b/data_descriptors/variables/opdec.msftyrho.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.msftyrho.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdec.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.sfdsi.json b/data_descriptors/variables/opdec.sfdsi.json
index e6fed74b2..2bfba599e 100644
--- a/data_descriptors/variables/opdec.sfdsi.json
+++ b/data_descriptors/variables/opdec.sfdsi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.sfdsi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdec.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.sfriver.json b/data_descriptors/variables/opdec.sfriver.json
index 02035eedf..6785521dc 100644
--- a/data_descriptors/variables/opdec.sfriver.json
+++ b/data_descriptors/variables/opdec.sfriver.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.sfriver.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdec.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.soga.json b/data_descriptors/variables/opdec.soga.json
index 182e80c8e..acbaebe5b 100644
--- a/data_descriptors/variables/opdec.soga.json
+++ b/data_descriptors/variables/opdec.soga.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.soga.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdec.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.sos.json b/data_descriptors/variables/opdec.sos.json
index aaa279a11..6aead9674 100644
--- a/data_descriptors/variables/opdec.sos.json
+++ b/data_descriptors/variables/opdec.sos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.sos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdec.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.sosga.json b/data_descriptors/variables/opdec.sosga.json
index 3d3aa229d..a376c66bb 100644
--- a/data_descriptors/variables/opdec.sosga.json
+++ b/data_descriptors/variables/opdec.sosga.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.sosga.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdec.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.tauuo.json b/data_descriptors/variables/opdec.tauuo.json
index 518c60899..da62f0396 100644
--- a/data_descriptors/variables/opdec.tauuo.json
+++ b/data_descriptors/variables/opdec.tauuo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.tauuo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdec.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.tauvo.json b/data_descriptors/variables/opdec.tauvo.json
index ae1fb5b95..aff24ad6c 100644
--- a/data_descriptors/variables/opdec.tauvo.json
+++ b/data_descriptors/variables/opdec.tauvo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.tauvo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdec.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.thetaoga.json b/data_descriptors/variables/opdec.thetaoga.json
index 9fbe6b8be..7356153c1 100644
--- a/data_descriptors/variables/opdec.thetaoga.json
+++ b/data_descriptors/variables/opdec.thetaoga.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.thetaoga.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdec.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.tos.json b/data_descriptors/variables/opdec.tos.json
index 0cd5c25d7..7be511244 100644
--- a/data_descriptors/variables/opdec.tos.json
+++ b/data_descriptors/variables/opdec.tos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.tos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdec.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.tosga.json b/data_descriptors/variables/opdec.tosga.json
index dae058507..8f0ae19d3 100644
--- a/data_descriptors/variables/opdec.tosga.json
+++ b/data_descriptors/variables/opdec.tosga.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.tosga.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdec.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.volo.json b/data_descriptors/variables/opdec.volo.json
index 3c5ec984e..02af28de2 100644
--- a/data_descriptors/variables/opdec.volo.json
+++ b/data_descriptors/variables/opdec.volo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.volo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdec.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdec.wfo.json b/data_descriptors/variables/opdec.wfo.json
index e859fff76..c4d1b358d 100644
--- a/data_descriptors/variables/opdec.wfo.json
+++ b/data_descriptors/variables/opdec.wfo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdec.wfo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdec.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdeclev.agessc.json b/data_descriptors/variables/opdeclev.agessc.json
index b3b349a9e..33a65faf6 100644
--- a/data_descriptors/variables/opdeclev.agessc.json
+++ b/data_descriptors/variables/opdeclev.agessc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdeclev.agessc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdeclev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdeclev.bigthetao.json b/data_descriptors/variables/opdeclev.bigthetao.json
index a7cc2b0f3..ad8bd0a9b 100644
--- a/data_descriptors/variables/opdeclev.bigthetao.json
+++ b/data_descriptors/variables/opdeclev.bigthetao.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdeclev.bigthetao.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdeclev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdeclev.masscello.json b/data_descriptors/variables/opdeclev.masscello.json
index 38235942d..dc87af556 100644
--- a/data_descriptors/variables/opdeclev.masscello.json
+++ b/data_descriptors/variables/opdeclev.masscello.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdeclev.masscello.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdeclev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdeclev.msftyz.json b/data_descriptors/variables/opdeclev.msftyz.json
index 4728d3305..3e4d9d98f 100644
--- a/data_descriptors/variables/opdeclev.msftyz.json
+++ b/data_descriptors/variables/opdeclev.msftyz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdeclev.msftyz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdeclev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdeclev.so.json b/data_descriptors/variables/opdeclev.so.json
index 24306f8e3..e2b845d99 100644
--- a/data_descriptors/variables/opdeclev.so.json
+++ b/data_descriptors/variables/opdeclev.so.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdeclev.so.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdeclev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdeclev.thetao.json b/data_descriptors/variables/opdeclev.thetao.json
index 9f8942229..41ad98f85 100644
--- a/data_descriptors/variables/opdeclev.thetao.json
+++ b/data_descriptors/variables/opdeclev.thetao.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdeclev.thetao.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdeclev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdeclev.thkcello.json b/data_descriptors/variables/opdeclev.thkcello.json
index 3c4bf82bf..8b4681818 100644
--- a/data_descriptors/variables/opdeclev.thkcello.json
+++ b/data_descriptors/variables/opdeclev.thkcello.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdeclev.thkcello.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdeclev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdeclev.uo.json b/data_descriptors/variables/opdeclev.uo.json
index dfa730f06..fcf450a35 100644
--- a/data_descriptors/variables/opdeclev.uo.json
+++ b/data_descriptors/variables/opdeclev.uo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdeclev.uo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdeclev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdeclev.vo.json b/data_descriptors/variables/opdeclev.vo.json
index 8a2b95337..f8b3dd773 100644
--- a/data_descriptors/variables/opdeclev.vo.json
+++ b/data_descriptors/variables/opdeclev.vo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdeclev.vo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdeclev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdeclev.volcello.json b/data_descriptors/variables/opdeclev.volcello.json
index e6c028e0c..51c6f8279 100644
--- a/data_descriptors/variables/opdeclev.volcello.json
+++ b/data_descriptors/variables/opdeclev.volcello.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdeclev.volcello.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdeclev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdeclev.wo.json b/data_descriptors/variables/opdeclev.wo.json
index 56fd8500a..a5e3f6988 100644
--- a/data_descriptors/variables/opdeclev.wo.json
+++ b/data_descriptors/variables/opdeclev.wo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdeclev.wo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdeclev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdecz.hfbasin.json b/data_descriptors/variables/opdecz.hfbasin.json
index 9ef84590e..258b71009 100644
--- a/data_descriptors/variables/opdecz.hfbasin.json
+++ b/data_descriptors/variables/opdecz.hfbasin.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdecz.hfbasin.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdecz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdecz.msftmrho.json b/data_descriptors/variables/opdecz.msftmrho.json
index b297d7d23..27e9823a8 100644
--- a/data_descriptors/variables/opdecz.msftmrho.json
+++ b/data_descriptors/variables/opdecz.msftmrho.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdecz.msftmrho.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdecz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opdecz.msftmz.json b/data_descriptors/variables/opdecz.msftmz.json
index 3e6e16881..8e3fd5304 100644
--- a/data_descriptors/variables/opdecz.msftmz.json
+++ b/data_descriptors/variables/opdecz.msftmz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opdecz.msftmz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opdecz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opfx.areacello.json b/data_descriptors/variables/opfx.areacello.json
index bd1d708f8..e176dee59 100644
--- a/data_descriptors/variables/opfx.areacello.json
+++ b/data_descriptors/variables/opfx.areacello.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opfx.areacello.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opfx.basin.json b/data_descriptors/variables/opfx.basin.json
index 7c0ba4660..94befb51e 100644
--- a/data_descriptors/variables/opfx.basin.json
+++ b/data_descriptors/variables/opfx.basin.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opfx.basin.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opfx.deptho.json b/data_descriptors/variables/opfx.deptho.json
index fa4b2f998..1eb01896d 100644
--- a/data_descriptors/variables/opfx.deptho.json
+++ b/data_descriptors/variables/opfx.deptho.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opfx.deptho.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opfx.hfgeou.json b/data_descriptors/variables/opfx.hfgeou.json
index 2df9d8f4a..4e830fe6d 100644
--- a/data_descriptors/variables/opfx.hfgeou.json
+++ b/data_descriptors/variables/opfx.hfgeou.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opfx.hfgeou.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opfx.masscello.json b/data_descriptors/variables/opfx.masscello.json
index eb241f017..7fbdf850d 100644
--- a/data_descriptors/variables/opfx.masscello.json
+++ b/data_descriptors/variables/opfx.masscello.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opfx.masscello.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opfx.sftof.json b/data_descriptors/variables/opfx.sftof.json
index 8cdb440a3..16efea349 100644
--- a/data_descriptors/variables/opfx.sftof.json
+++ b/data_descriptors/variables/opfx.sftof.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opfx.sftof.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opfx.thkcello.json b/data_descriptors/variables/opfx.thkcello.json
index 59c790478..b5a00eba9 100644
--- a/data_descriptors/variables/opfx.thkcello.json
+++ b/data_descriptors/variables/opfx.thkcello.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opfx.thkcello.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opfx.ugrido.json b/data_descriptors/variables/opfx.ugrido.json
index 3f186ae88..664282358 100644
--- a/data_descriptors/variables/opfx.ugrido.json
+++ b/data_descriptors/variables/opfx.ugrido.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opfx.ugrido.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opfx.volcello.json b/data_descriptors/variables/opfx.volcello.json
index 315e50c81..90fa521ec 100644
--- a/data_descriptors/variables/opfx.volcello.json
+++ b/data_descriptors/variables/opfx.volcello.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opfx.volcello.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opfx.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.bigthetaoga.json b/data_descriptors/variables/opmon.bigthetaoga.json
index 261498653..f27798d00 100644
--- a/data_descriptors/variables/opmon.bigthetaoga.json
+++ b/data_descriptors/variables/opmon.bigthetaoga.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.bigthetaoga.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.evs.json b/data_descriptors/variables/opmon.evs.json
index 17b294548..196b68af2 100644
--- a/data_descriptors/variables/opmon.evs.json
+++ b/data_descriptors/variables/opmon.evs.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.evs.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.fgcfc11.json b/data_descriptors/variables/opmon.fgcfc11.json
index 2b9e7a0bf..783e9c648 100644
--- a/data_descriptors/variables/opmon.fgcfc11.json
+++ b/data_descriptors/variables/opmon.fgcfc11.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.fgcfc11.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.fgcfc12.json b/data_descriptors/variables/opmon.fgcfc12.json
index dbd52a9d3..8679b9e4b 100644
--- a/data_descriptors/variables/opmon.fgcfc12.json
+++ b/data_descriptors/variables/opmon.fgcfc12.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.fgcfc12.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.fgsf6.json b/data_descriptors/variables/opmon.fgsf6.json
index a5b685e2f..2b491d321 100644
--- a/data_descriptors/variables/opmon.fgsf6.json
+++ b/data_descriptors/variables/opmon.fgsf6.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.fgsf6.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.ficeberg2d.json b/data_descriptors/variables/opmon.ficeberg2d.json
index 98eab053e..83cce679a 100644
--- a/data_descriptors/variables/opmon.ficeberg2d.json
+++ b/data_descriptors/variables/opmon.ficeberg2d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.ficeberg2d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.flandice.json b/data_descriptors/variables/opmon.flandice.json
index 41d9254f1..48c8e6ab9 100644
--- a/data_descriptors/variables/opmon.flandice.json
+++ b/data_descriptors/variables/opmon.flandice.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.flandice.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.friver.json b/data_descriptors/variables/opmon.friver.json
index a8ac1fb7d..63d68ec4e 100644
--- a/data_descriptors/variables/opmon.friver.json
+++ b/data_descriptors/variables/opmon.friver.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.friver.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.fsitherm.json b/data_descriptors/variables/opmon.fsitherm.json
index 1169630e0..6c520b97a 100644
--- a/data_descriptors/variables/opmon.fsitherm.json
+++ b/data_descriptors/variables/opmon.fsitherm.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.fsitherm.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.hfcorr.json b/data_descriptors/variables/opmon.hfcorr.json
index aeefca655..1b9a5fd8f 100644
--- a/data_descriptors/variables/opmon.hfcorr.json
+++ b/data_descriptors/variables/opmon.hfcorr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.hfcorr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.hfds.json b/data_descriptors/variables/opmon.hfds.json
index 4b25f99ec..b58a5ec89 100644
--- a/data_descriptors/variables/opmon.hfds.json
+++ b/data_descriptors/variables/opmon.hfds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.hfds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.hfevapds.json b/data_descriptors/variables/opmon.hfevapds.json
index 2ff95bbab..495aac282 100644
--- a/data_descriptors/variables/opmon.hfevapds.json
+++ b/data_descriptors/variables/opmon.hfevapds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.hfevapds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.hfgeou.json b/data_descriptors/variables/opmon.hfgeou.json
index 21a6f35fd..3ce803797 100644
--- a/data_descriptors/variables/opmon.hfgeou.json
+++ b/data_descriptors/variables/opmon.hfgeou.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.hfgeou.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.hfibthermds2d.json b/data_descriptors/variables/opmon.hfibthermds2d.json
index 59f10460b..02c64a9da 100644
--- a/data_descriptors/variables/opmon.hfibthermds2d.json
+++ b/data_descriptors/variables/opmon.hfibthermds2d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.hfibthermds2d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.hflso.json b/data_descriptors/variables/opmon.hflso.json
index 1a956446c..4dee57bd7 100644
--- a/data_descriptors/variables/opmon.hflso.json
+++ b/data_descriptors/variables/opmon.hflso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.hflso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.hfrainds.json b/data_descriptors/variables/opmon.hfrainds.json
index 0b4782259..ce713e7ef 100644
--- a/data_descriptors/variables/opmon.hfrainds.json
+++ b/data_descriptors/variables/opmon.hfrainds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.hfrainds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.hfrunoffds2d.json b/data_descriptors/variables/opmon.hfrunoffds2d.json
index fcd6fb9fb..22024596d 100644
--- a/data_descriptors/variables/opmon.hfrunoffds2d.json
+++ b/data_descriptors/variables/opmon.hfrunoffds2d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.hfrunoffds2d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.hfsifrazil2d.json b/data_descriptors/variables/opmon.hfsifrazil2d.json
index 555cafd23..5c5432089 100644
--- a/data_descriptors/variables/opmon.hfsifrazil2d.json
+++ b/data_descriptors/variables/opmon.hfsifrazil2d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.hfsifrazil2d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.hfsnthermds2d.json b/data_descriptors/variables/opmon.hfsnthermds2d.json
index f0266b01a..2a81863a5 100644
--- a/data_descriptors/variables/opmon.hfsnthermds2d.json
+++ b/data_descriptors/variables/opmon.hfsnthermds2d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.hfsnthermds2d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.hfsso.json b/data_descriptors/variables/opmon.hfsso.json
index c3edb2a9c..f2a69b4e0 100644
--- a/data_descriptors/variables/opmon.hfsso.json
+++ b/data_descriptors/variables/opmon.hfsso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.hfsso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.hfx.json b/data_descriptors/variables/opmon.hfx.json
index aab458c85..7809b5c94 100644
--- a/data_descriptors/variables/opmon.hfx.json
+++ b/data_descriptors/variables/opmon.hfx.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.hfx.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.hfy.json b/data_descriptors/variables/opmon.hfy.json
index 61eb91718..075a6e763 100644
--- a/data_descriptors/variables/opmon.hfy.json
+++ b/data_descriptors/variables/opmon.hfy.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.hfy.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.masso.json b/data_descriptors/variables/opmon.masso.json
index 415c7b361..d19e0494b 100644
--- a/data_descriptors/variables/opmon.masso.json
+++ b/data_descriptors/variables/opmon.masso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.masso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.mfo.json b/data_descriptors/variables/opmon.mfo.json
index aac1cb9b3..1cb4d36ed 100644
--- a/data_descriptors/variables/opmon.mfo.json
+++ b/data_descriptors/variables/opmon.mfo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.mfo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.mlotst.json b/data_descriptors/variables/opmon.mlotst.json
index 10d06c614..089ef4fcf 100644
--- a/data_descriptors/variables/opmon.mlotst.json
+++ b/data_descriptors/variables/opmon.mlotst.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.mlotst.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.mlotstmax.json b/data_descriptors/variables/opmon.mlotstmax.json
index 302ae44ab..bd6a30c32 100644
--- a/data_descriptors/variables/opmon.mlotstmax.json
+++ b/data_descriptors/variables/opmon.mlotstmax.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.mlotstmax.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.mlotstmin.json b/data_descriptors/variables/opmon.mlotstmin.json
index 3213497c4..18c99ca85 100644
--- a/data_descriptors/variables/opmon.mlotstmin.json
+++ b/data_descriptors/variables/opmon.mlotstmin.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.mlotstmin.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.mlotstsq.json b/data_descriptors/variables/opmon.mlotstsq.json
index 71ae1ffde..8d79d0c46 100644
--- a/data_descriptors/variables/opmon.mlotstsq.json
+++ b/data_descriptors/variables/opmon.mlotstsq.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.mlotstsq.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.msftbarot.json b/data_descriptors/variables/opmon.msftbarot.json
index 5f7b84492..953022304 100644
--- a/data_descriptors/variables/opmon.msftbarot.json
+++ b/data_descriptors/variables/opmon.msftbarot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.msftbarot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.msftyrho.json b/data_descriptors/variables/opmon.msftyrho.json
index 8c2ab52e4..a6909472d 100644
--- a/data_descriptors/variables/opmon.msftyrho.json
+++ b/data_descriptors/variables/opmon.msftyrho.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.msftyrho.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.msftyrhompa.json b/data_descriptors/variables/opmon.msftyrhompa.json
index 1d6e52bce..45e0164bc 100644
--- a/data_descriptors/variables/opmon.msftyrhompa.json
+++ b/data_descriptors/variables/opmon.msftyrhompa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.msftyrhompa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.ocontempmint.json b/data_descriptors/variables/opmon.ocontempmint.json
index cbbddb916..a1a805e95 100644
--- a/data_descriptors/variables/opmon.ocontempmint.json
+++ b/data_descriptors/variables/opmon.ocontempmint.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.ocontempmint.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.opottempmint.json b/data_descriptors/variables/opmon.opottempmint.json
index 3bf6befad..bf26c0dd5 100644
--- a/data_descriptors/variables/opmon.opottempmint.json
+++ b/data_descriptors/variables/opmon.opottempmint.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.opottempmint.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.pbo.json b/data_descriptors/variables/opmon.pbo.json
index 36a52d0fa..0ae68401d 100644
--- a/data_descriptors/variables/opmon.pbo.json
+++ b/data_descriptors/variables/opmon.pbo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.pbo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.prsn.json b/data_descriptors/variables/opmon.prsn.json
index f8af725ae..ae99c1746 100644
--- a/data_descriptors/variables/opmon.prsn.json
+++ b/data_descriptors/variables/opmon.prsn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.prsn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.pso.json b/data_descriptors/variables/opmon.pso.json
index 354618b0a..2df7a9d34 100644
--- a/data_descriptors/variables/opmon.pso.json
+++ b/data_descriptors/variables/opmon.pso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.pso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.rlntds.json b/data_descriptors/variables/opmon.rlntds.json
index 4770a655a..40e9b69a2 100644
--- a/data_descriptors/variables/opmon.rlntds.json
+++ b/data_descriptors/variables/opmon.rlntds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.rlntds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.rsntds.json b/data_descriptors/variables/opmon.rsntds.json
index 564f23106..5bd341194 100644
--- a/data_descriptors/variables/opmon.rsntds.json
+++ b/data_descriptors/variables/opmon.rsntds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.rsntds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.sfdsi.json b/data_descriptors/variables/opmon.sfdsi.json
index d7db097bc..481aeb985 100644
--- a/data_descriptors/variables/opmon.sfdsi.json
+++ b/data_descriptors/variables/opmon.sfdsi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.sfdsi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.sfriver.json b/data_descriptors/variables/opmon.sfriver.json
index b392d969e..4362baea3 100644
--- a/data_descriptors/variables/opmon.sfriver.json
+++ b/data_descriptors/variables/opmon.sfriver.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.sfriver.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.sob.json b/data_descriptors/variables/opmon.sob.json
index 3f5a7eec1..37c0d81b4 100644
--- a/data_descriptors/variables/opmon.sob.json
+++ b/data_descriptors/variables/opmon.sob.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.sob.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.soga.json b/data_descriptors/variables/opmon.soga.json
index 61da8a6df..766c9a28f 100644
--- a/data_descriptors/variables/opmon.soga.json
+++ b/data_descriptors/variables/opmon.soga.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.soga.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.somint.json b/data_descriptors/variables/opmon.somint.json
index 92ff30d4e..afc444955 100644
--- a/data_descriptors/variables/opmon.somint.json
+++ b/data_descriptors/variables/opmon.somint.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.somint.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.sos.json b/data_descriptors/variables/opmon.sos.json
index 4b3ec8c40..e28eadc7c 100644
--- a/data_descriptors/variables/opmon.sos.json
+++ b/data_descriptors/variables/opmon.sos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.sos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.sosga.json b/data_descriptors/variables/opmon.sosga.json
index 1ac87cd43..eb6b010a2 100644
--- a/data_descriptors/variables/opmon.sosga.json
+++ b/data_descriptors/variables/opmon.sosga.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.sosga.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.sossq.json b/data_descriptors/variables/opmon.sossq.json
index 069aea01c..203facdf0 100644
--- a/data_descriptors/variables/opmon.sossq.json
+++ b/data_descriptors/variables/opmon.sossq.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.sossq.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.t20d.json b/data_descriptors/variables/opmon.t20d.json
index 89946a5f0..64621fc07 100644
--- a/data_descriptors/variables/opmon.t20d.json
+++ b/data_descriptors/variables/opmon.t20d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.t20d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.tauucorr.json b/data_descriptors/variables/opmon.tauucorr.json
index d1642006b..4c973b023 100644
--- a/data_descriptors/variables/opmon.tauucorr.json
+++ b/data_descriptors/variables/opmon.tauucorr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.tauucorr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.tauuo.json b/data_descriptors/variables/opmon.tauuo.json
index 8d0aeb91f..889ba7454 100644
--- a/data_descriptors/variables/opmon.tauuo.json
+++ b/data_descriptors/variables/opmon.tauuo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.tauuo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.tauvcorr.json b/data_descriptors/variables/opmon.tauvcorr.json
index 6a3e39d02..492eee238 100644
--- a/data_descriptors/variables/opmon.tauvcorr.json
+++ b/data_descriptors/variables/opmon.tauvcorr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.tauvcorr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.tauvo.json b/data_descriptors/variables/opmon.tauvo.json
index e6a9b6c7b..2cfeb7112 100644
--- a/data_descriptors/variables/opmon.tauvo.json
+++ b/data_descriptors/variables/opmon.tauvo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.tauvo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.thetaoga.json b/data_descriptors/variables/opmon.thetaoga.json
index 00e415e85..b3201d749 100644
--- a/data_descriptors/variables/opmon.thetaoga.json
+++ b/data_descriptors/variables/opmon.thetaoga.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.thetaoga.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.thetaot.json b/data_descriptors/variables/opmon.thetaot.json
index afe39b466..c3e10e5e1 100644
--- a/data_descriptors/variables/opmon.thetaot.json
+++ b/data_descriptors/variables/opmon.thetaot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.thetaot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.thetaot2000.json b/data_descriptors/variables/opmon.thetaot2000.json
index 40a540b0c..71f1e7afc 100644
--- a/data_descriptors/variables/opmon.thetaot2000.json
+++ b/data_descriptors/variables/opmon.thetaot2000.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.thetaot2000.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.thetaot300.json b/data_descriptors/variables/opmon.thetaot300.json
index c743480ef..4881edeb9 100644
--- a/data_descriptors/variables/opmon.thetaot300.json
+++ b/data_descriptors/variables/opmon.thetaot300.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.thetaot300.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.thetaot700.json b/data_descriptors/variables/opmon.thetaot700.json
index a84a3db7b..359729493 100644
--- a/data_descriptors/variables/opmon.thetaot700.json
+++ b/data_descriptors/variables/opmon.thetaot700.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.thetaot700.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.tob.json b/data_descriptors/variables/opmon.tob.json
index 9adfb0c6d..4feb11568 100644
--- a/data_descriptors/variables/opmon.tob.json
+++ b/data_descriptors/variables/opmon.tob.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.tob.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.tos.json b/data_descriptors/variables/opmon.tos.json
index f47ce6f29..edb206e57 100644
--- a/data_descriptors/variables/opmon.tos.json
+++ b/data_descriptors/variables/opmon.tos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.tos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.tosga.json b/data_descriptors/variables/opmon.tosga.json
index 3792cf4c3..82749afc1 100644
--- a/data_descriptors/variables/opmon.tosga.json
+++ b/data_descriptors/variables/opmon.tosga.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.tosga.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.tossq.json b/data_descriptors/variables/opmon.tossq.json
index 0876f8e37..779ffd719 100644
--- a/data_descriptors/variables/opmon.tossq.json
+++ b/data_descriptors/variables/opmon.tossq.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.tossq.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.volo.json b/data_descriptors/variables/opmon.volo.json
index 26e24fe3a..b9890b00e 100644
--- a/data_descriptors/variables/opmon.volo.json
+++ b/data_descriptors/variables/opmon.volo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.volo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.vsf.json b/data_descriptors/variables/opmon.vsf.json
index d766ac6d9..1ff54f691 100644
--- a/data_descriptors/variables/opmon.vsf.json
+++ b/data_descriptors/variables/opmon.vsf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.vsf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.vsfcorr.json b/data_descriptors/variables/opmon.vsfcorr.json
index 7484214be..f19c64b5c 100644
--- a/data_descriptors/variables/opmon.vsfcorr.json
+++ b/data_descriptors/variables/opmon.vsfcorr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.vsfcorr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.vsfevap.json b/data_descriptors/variables/opmon.vsfevap.json
index 552152e6a..a77237d72 100644
--- a/data_descriptors/variables/opmon.vsfevap.json
+++ b/data_descriptors/variables/opmon.vsfevap.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.vsfevap.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.vsfpr.json b/data_descriptors/variables/opmon.vsfpr.json
index dccdcdb44..1a86a1b3a 100644
--- a/data_descriptors/variables/opmon.vsfpr.json
+++ b/data_descriptors/variables/opmon.vsfpr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.vsfpr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.vsfriver.json b/data_descriptors/variables/opmon.vsfriver.json
index 1d41f1f46..8ae4f7374 100644
--- a/data_descriptors/variables/opmon.vsfriver.json
+++ b/data_descriptors/variables/opmon.vsfriver.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.vsfriver.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.vsfsit.json b/data_descriptors/variables/opmon.vsfsit.json
index cb9d2aac4..9a67c9c0b 100644
--- a/data_descriptors/variables/opmon.vsfsit.json
+++ b/data_descriptors/variables/opmon.vsfsit.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.vsfsit.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.wfcorr.json b/data_descriptors/variables/opmon.wfcorr.json
index dd43a6cc6..b169edcae 100644
--- a/data_descriptors/variables/opmon.wfcorr.json
+++ b/data_descriptors/variables/opmon.wfcorr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.wfcorr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.wfo.json b/data_descriptors/variables/opmon.wfo.json
index 38ddf8195..2ebd939ae 100644
--- a/data_descriptors/variables/opmon.wfo.json
+++ b/data_descriptors/variables/opmon.wfo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.wfo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.wfonocorr.json b/data_descriptors/variables/opmon.wfonocorr.json
index f4ea6eb95..ea37d7039 100644
--- a/data_descriptors/variables/opmon.wfonocorr.json
+++ b/data_descriptors/variables/opmon.wfonocorr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.wfonocorr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.zos.json b/data_descriptors/variables/opmon.zos.json
index 1940c9e84..39d3a522f 100644
--- a/data_descriptors/variables/opmon.zos.json
+++ b/data_descriptors/variables/opmon.zos.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.zos.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.zossq.json b/data_descriptors/variables/opmon.zossq.json
index 6f0de2bab..fd73fd1cd 100644
--- a/data_descriptors/variables/opmon.zossq.json
+++ b/data_descriptors/variables/opmon.zossq.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.zossq.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmon.zostoga.json b/data_descriptors/variables/opmon.zostoga.json
index 556f26d53..5658903c7 100644
--- a/data_descriptors/variables/opmon.zostoga.json
+++ b/data_descriptors/variables/opmon.zostoga.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmon.zostoga.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclim.difmxybo2d.json b/data_descriptors/variables/opmonclim.difmxybo2d.json
index 6ce99da47..76f182c94 100644
--- a/data_descriptors/variables/opmonclim.difmxybo2d.json
+++ b/data_descriptors/variables/opmonclim.difmxybo2d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclim.difmxybo2d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclim.difmxylo2d.json b/data_descriptors/variables/opmonclim.difmxylo2d.json
index e07236399..a99a4abfe 100644
--- a/data_descriptors/variables/opmonclim.difmxylo2d.json
+++ b/data_descriptors/variables/opmonclim.difmxylo2d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclim.difmxylo2d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclim.diftrbbo2d.json b/data_descriptors/variables/opmonclim.diftrbbo2d.json
index 6287f8906..4524e346f 100644
--- a/data_descriptors/variables/opmonclim.diftrbbo2d.json
+++ b/data_descriptors/variables/opmonclim.diftrbbo2d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclim.diftrbbo2d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclim.diftrblo2d.json b/data_descriptors/variables/opmonclim.diftrblo2d.json
index 61b401514..e7905b382 100644
--- a/data_descriptors/variables/opmonclim.diftrblo2d.json
+++ b/data_descriptors/variables/opmonclim.diftrblo2d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclim.diftrblo2d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclim.diftrebo2d.json b/data_descriptors/variables/opmonclim.diftrebo2d.json
index bcfdcfe42..33ffe2f5d 100644
--- a/data_descriptors/variables/opmonclim.diftrebo2d.json
+++ b/data_descriptors/variables/opmonclim.diftrebo2d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclim.diftrebo2d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclim.diftrelo2d.json b/data_descriptors/variables/opmonclim.diftrelo2d.json
index 6b548a682..680e61eef 100644
--- a/data_descriptors/variables/opmonclim.diftrelo2d.json
+++ b/data_descriptors/variables/opmonclim.diftrelo2d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclim.diftrelo2d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclim.diftrxybo2d.json b/data_descriptors/variables/opmonclim.diftrxybo2d.json
index 5f16e071d..d5b615f0b 100644
--- a/data_descriptors/variables/opmonclim.diftrxybo2d.json
+++ b/data_descriptors/variables/opmonclim.diftrxybo2d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclim.diftrxybo2d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclim.diftrxylo2d.json b/data_descriptors/variables/opmonclim.diftrxylo2d.json
index a870b0e45..bba617932 100644
--- a/data_descriptors/variables/opmonclim.diftrxylo2d.json
+++ b/data_descriptors/variables/opmonclim.diftrxylo2d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclim.diftrxylo2d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclim.dispkexyfo2d.json b/data_descriptors/variables/opmonclim.dispkexyfo2d.json
index 33977aef1..f0e1f6e2e 100644
--- a/data_descriptors/variables/opmonclim.dispkexyfo2d.json
+++ b/data_descriptors/variables/opmonclim.dispkexyfo2d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclim.dispkexyfo2d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclim.tnkebto2d.json b/data_descriptors/variables/opmonclim.tnkebto2d.json
index ec48ece2f..120b0748a 100644
--- a/data_descriptors/variables/opmonclim.tnkebto2d.json
+++ b/data_descriptors/variables/opmonclim.tnkebto2d.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclim.tnkebto2d.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclim.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.difmxybo.json b/data_descriptors/variables/opmonclimlev.difmxybo.json
index 319fc173d..1dea283ae 100644
--- a/data_descriptors/variables/opmonclimlev.difmxybo.json
+++ b/data_descriptors/variables/opmonclimlev.difmxybo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.difmxybo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.difmxylo.json b/data_descriptors/variables/opmonclimlev.difmxylo.json
index 7dd8e3c24..30693eca5 100644
--- a/data_descriptors/variables/opmonclimlev.difmxylo.json
+++ b/data_descriptors/variables/opmonclimlev.difmxylo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.difmxylo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.diftrbbo.json b/data_descriptors/variables/opmonclimlev.diftrbbo.json
index bdece00d9..23845750b 100644
--- a/data_descriptors/variables/opmonclimlev.diftrbbo.json
+++ b/data_descriptors/variables/opmonclimlev.diftrbbo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.diftrbbo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.diftrblo.json b/data_descriptors/variables/opmonclimlev.diftrblo.json
index dddfd1fd4..b2b67d953 100644
--- a/data_descriptors/variables/opmonclimlev.diftrblo.json
+++ b/data_descriptors/variables/opmonclimlev.diftrblo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.diftrblo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.diftrebo.json b/data_descriptors/variables/opmonclimlev.diftrebo.json
index 01a92ec49..335b7e4cd 100644
--- a/data_descriptors/variables/opmonclimlev.diftrebo.json
+++ b/data_descriptors/variables/opmonclimlev.diftrebo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.diftrebo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.diftrelo.json b/data_descriptors/variables/opmonclimlev.diftrelo.json
index 85a6aac14..7cf6bb8e1 100644
--- a/data_descriptors/variables/opmonclimlev.diftrelo.json
+++ b/data_descriptors/variables/opmonclimlev.diftrelo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.diftrelo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.diftrxybo.json b/data_descriptors/variables/opmonclimlev.diftrxybo.json
index b3e3404d8..91a605bd7 100644
--- a/data_descriptors/variables/opmonclimlev.diftrxybo.json
+++ b/data_descriptors/variables/opmonclimlev.diftrxybo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.diftrxybo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.diftrxylo.json b/data_descriptors/variables/opmonclimlev.diftrxylo.json
index d64fcd70d..4ce60aff3 100644
--- a/data_descriptors/variables/opmonclimlev.diftrxylo.json
+++ b/data_descriptors/variables/opmonclimlev.diftrxylo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.diftrxylo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.difvho.json b/data_descriptors/variables/opmonclimlev.difvho.json
index 2483c85ab..88cb1042c 100644
--- a/data_descriptors/variables/opmonclimlev.difvho.json
+++ b/data_descriptors/variables/opmonclimlev.difvho.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.difvho.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.difvmbo.json b/data_descriptors/variables/opmonclimlev.difvmbo.json
index e6249424e..3d7315133 100644
--- a/data_descriptors/variables/opmonclimlev.difvmbo.json
+++ b/data_descriptors/variables/opmonclimlev.difvmbo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.difvmbo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.difvmfdo.json b/data_descriptors/variables/opmonclimlev.difvmfdo.json
index b819ac98c..eea92ba36 100644
--- a/data_descriptors/variables/opmonclimlev.difvmfdo.json
+++ b/data_descriptors/variables/opmonclimlev.difvmfdo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.difvmfdo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.difvmo.json b/data_descriptors/variables/opmonclimlev.difvmo.json
index dc78ee3d2..63c849417 100644
--- a/data_descriptors/variables/opmonclimlev.difvmo.json
+++ b/data_descriptors/variables/opmonclimlev.difvmo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.difvmo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.difvmto.json b/data_descriptors/variables/opmonclimlev.difvmto.json
index 99308c104..dc4d8ae74 100644
--- a/data_descriptors/variables/opmonclimlev.difvmto.json
+++ b/data_descriptors/variables/opmonclimlev.difvmto.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.difvmto.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.difvso.json b/data_descriptors/variables/opmonclimlev.difvso.json
index 0dc1b1d2b..80ad65688 100644
--- a/data_descriptors/variables/opmonclimlev.difvso.json
+++ b/data_descriptors/variables/opmonclimlev.difvso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.difvso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.difvtrbo.json b/data_descriptors/variables/opmonclimlev.difvtrbo.json
index 8edfbb629..9d20cc7c3 100644
--- a/data_descriptors/variables/opmonclimlev.difvtrbo.json
+++ b/data_descriptors/variables/opmonclimlev.difvtrbo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.difvtrbo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.difvtrto.json b/data_descriptors/variables/opmonclimlev.difvtrto.json
index ef5452cb8..6839dead0 100644
--- a/data_descriptors/variables/opmonclimlev.difvtrto.json
+++ b/data_descriptors/variables/opmonclimlev.difvtrto.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.difvtrto.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.dispkevfo.json b/data_descriptors/variables/opmonclimlev.dispkevfo.json
index dad7c4484..d2832ee92 100644
--- a/data_descriptors/variables/opmonclimlev.dispkevfo.json
+++ b/data_descriptors/variables/opmonclimlev.dispkevfo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.dispkevfo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.dispkexyfo.json b/data_descriptors/variables/opmonclimlev.dispkexyfo.json
index 690654bc4..dd4b8fc0a 100644
--- a/data_descriptors/variables/opmonclimlev.dispkexyfo.json
+++ b/data_descriptors/variables/opmonclimlev.dispkexyfo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.dispkexyfo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.tnkebto.json b/data_descriptors/variables/opmonclimlev.tnkebto.json
index fbe786f88..4d220f607 100644
--- a/data_descriptors/variables/opmonclimlev.tnkebto.json
+++ b/data_descriptors/variables/opmonclimlev.tnkebto.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.tnkebto.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.tnpeo.json b/data_descriptors/variables/opmonclimlev.tnpeo.json
index 4af5856ff..9a1299782 100644
--- a/data_descriptors/variables/opmonclimlev.tnpeo.json
+++ b/data_descriptors/variables/opmonclimlev.tnpeo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.tnpeo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.tnpeot.json b/data_descriptors/variables/opmonclimlev.tnpeot.json
index 6d11a27a2..6ede5158f 100644
--- a/data_descriptors/variables/opmonclimlev.tnpeot.json
+++ b/data_descriptors/variables/opmonclimlev.tnpeot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.tnpeot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.tnpeotb.json b/data_descriptors/variables/opmonclimlev.tnpeotb.json
index cbef636e9..0104378ee 100644
--- a/data_descriptors/variables/opmonclimlev.tnpeotb.json
+++ b/data_descriptors/variables/opmonclimlev.tnpeotb.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.tnpeotb.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.zfullo.json b/data_descriptors/variables/opmonclimlev.zfullo.json
index 6932067f2..cec007d97 100644
--- a/data_descriptors/variables/opmonclimlev.zfullo.json
+++ b/data_descriptors/variables/opmonclimlev.zfullo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.zfullo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonclimlev.zhalfo.json b/data_descriptors/variables/opmonclimlev.zhalfo.json
index 8321c2697..3fed2b66b 100644
--- a/data_descriptors/variables/opmonclimlev.zhalfo.json
+++ b/data_descriptors/variables/opmonclimlev.zhalfo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonclimlev.zhalfo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonclimlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.agessc.json b/data_descriptors/variables/opmonlev.agessc.json
index a0254c40e..16328ee5e 100644
--- a/data_descriptors/variables/opmonlev.agessc.json
+++ b/data_descriptors/variables/opmonlev.agessc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.agessc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.bigthetao.json b/data_descriptors/variables/opmonlev.bigthetao.json
index d51a9dcf8..0da378867 100644
--- a/data_descriptors/variables/opmonlev.bigthetao.json
+++ b/data_descriptors/variables/opmonlev.bigthetao.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.bigthetao.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.cfc11.json b/data_descriptors/variables/opmonlev.cfc11.json
index 42bf217dd..00896df4e 100644
--- a/data_descriptors/variables/opmonlev.cfc11.json
+++ b/data_descriptors/variables/opmonlev.cfc11.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.cfc11.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.cfc12.json b/data_descriptors/variables/opmonlev.cfc12.json
index 0f0786286..49c133b3c 100644
--- a/data_descriptors/variables/opmonlev.cfc12.json
+++ b/data_descriptors/variables/opmonlev.cfc12.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.cfc12.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.ficeberg.json b/data_descriptors/variables/opmonlev.ficeberg.json
index f4af4d4c1..93c5d9ddc 100644
--- a/data_descriptors/variables/opmonlev.ficeberg.json
+++ b/data_descriptors/variables/opmonlev.ficeberg.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.ficeberg.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.hfibthermds.json b/data_descriptors/variables/opmonlev.hfibthermds.json
index 331172517..722d57023 100644
--- a/data_descriptors/variables/opmonlev.hfibthermds.json
+++ b/data_descriptors/variables/opmonlev.hfibthermds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.hfibthermds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.hfrunoffds.json b/data_descriptors/variables/opmonlev.hfrunoffds.json
index f5f64d2da..3e24f64e2 100644
--- a/data_descriptors/variables/opmonlev.hfrunoffds.json
+++ b/data_descriptors/variables/opmonlev.hfrunoffds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.hfrunoffds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.hfsifrazil.json b/data_descriptors/variables/opmonlev.hfsifrazil.json
index d1cd71bfa..c23dcd64f 100644
--- a/data_descriptors/variables/opmonlev.hfsifrazil.json
+++ b/data_descriptors/variables/opmonlev.hfsifrazil.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.hfsifrazil.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.hfsnthermds.json b/data_descriptors/variables/opmonlev.hfsnthermds.json
index bcfa77f66..18caa634a 100644
--- a/data_descriptors/variables/opmonlev.hfsnthermds.json
+++ b/data_descriptors/variables/opmonlev.hfsnthermds.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.hfsnthermds.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.masscello.json b/data_descriptors/variables/opmonlev.masscello.json
index 031473c38..b87e4712e 100644
--- a/data_descriptors/variables/opmonlev.masscello.json
+++ b/data_descriptors/variables/opmonlev.masscello.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.masscello.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.msftyz.json b/data_descriptors/variables/opmonlev.msftyz.json
index 6b1bf7e62..94e28731f 100644
--- a/data_descriptors/variables/opmonlev.msftyz.json
+++ b/data_descriptors/variables/opmonlev.msftyz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.msftyz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.msftyzmpa.json b/data_descriptors/variables/opmonlev.msftyzmpa.json
index 18b735901..b8c40b1f7 100644
--- a/data_descriptors/variables/opmonlev.msftyzmpa.json
+++ b/data_descriptors/variables/opmonlev.msftyzmpa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.msftyzmpa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.obvfsq.json b/data_descriptors/variables/opmonlev.obvfsq.json
index 66faec14a..b0352a247 100644
--- a/data_descriptors/variables/opmonlev.obvfsq.json
+++ b/data_descriptors/variables/opmonlev.obvfsq.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.obvfsq.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.ocontempdiff.json b/data_descriptors/variables/opmonlev.ocontempdiff.json
index 27f4bdedc..686568059 100644
--- a/data_descriptors/variables/opmonlev.ocontempdiff.json
+++ b/data_descriptors/variables/opmonlev.ocontempdiff.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.ocontempdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.ocontemppadvect.json b/data_descriptors/variables/opmonlev.ocontemppadvect.json
index a39ce86ae..64ca51aa5 100644
--- a/data_descriptors/variables/opmonlev.ocontemppadvect.json
+++ b/data_descriptors/variables/opmonlev.ocontemppadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.ocontemppadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.ocontemppmdiff.json b/data_descriptors/variables/opmonlev.ocontemppmdiff.json
index 55a7502b1..0b3c93964 100644
--- a/data_descriptors/variables/opmonlev.ocontemppmdiff.json
+++ b/data_descriptors/variables/opmonlev.ocontemppmdiff.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.ocontemppmdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.ocontemppsmadvect.json b/data_descriptors/variables/opmonlev.ocontemppsmadvect.json
index 784de160f..cc713786d 100644
--- a/data_descriptors/variables/opmonlev.ocontemppsmadvect.json
+++ b/data_descriptors/variables/opmonlev.ocontemppsmadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.ocontemppsmadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.ocontemprmadvect.json b/data_descriptors/variables/opmonlev.ocontemprmadvect.json
index 7bc57cd66..cc8b974a6 100644
--- a/data_descriptors/variables/opmonlev.ocontemprmadvect.json
+++ b/data_descriptors/variables/opmonlev.ocontemprmadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.ocontemprmadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.ocontemptend.json b/data_descriptors/variables/opmonlev.ocontemptend.json
index b08adc796..8e702c0e1 100644
--- a/data_descriptors/variables/opmonlev.ocontemptend.json
+++ b/data_descriptors/variables/opmonlev.ocontemptend.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.ocontemptend.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.opottempdiff.json b/data_descriptors/variables/opmonlev.opottempdiff.json
index b4ba811e1..ff3a581b8 100644
--- a/data_descriptors/variables/opmonlev.opottempdiff.json
+++ b/data_descriptors/variables/opmonlev.opottempdiff.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.opottempdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.opottemppadvect.json b/data_descriptors/variables/opmonlev.opottemppadvect.json
index 3f869544d..cad71c963 100644
--- a/data_descriptors/variables/opmonlev.opottemppadvect.json
+++ b/data_descriptors/variables/opmonlev.opottemppadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.opottemppadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.opottemppmdiff.json b/data_descriptors/variables/opmonlev.opottemppmdiff.json
index c5d4e1f1f..94ee2061a 100644
--- a/data_descriptors/variables/opmonlev.opottemppmdiff.json
+++ b/data_descriptors/variables/opmonlev.opottemppmdiff.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.opottemppmdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.opottemppsmadvect.json b/data_descriptors/variables/opmonlev.opottemppsmadvect.json
index 58f39a52d..0384baeca 100644
--- a/data_descriptors/variables/opmonlev.opottemppsmadvect.json
+++ b/data_descriptors/variables/opmonlev.opottemppsmadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.opottemppsmadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.opottemprmadvect.json b/data_descriptors/variables/opmonlev.opottemprmadvect.json
index df5579aa4..85b4b8bc6 100644
--- a/data_descriptors/variables/opmonlev.opottemprmadvect.json
+++ b/data_descriptors/variables/opmonlev.opottemprmadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.opottemprmadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.opottemptend.json b/data_descriptors/variables/opmonlev.opottemptend.json
index 9955d0a46..0b94ac41c 100644
--- a/data_descriptors/variables/opmonlev.opottemptend.json
+++ b/data_descriptors/variables/opmonlev.opottemptend.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.opottemptend.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.osaltdiff.json b/data_descriptors/variables/opmonlev.osaltdiff.json
index 09bb7ec73..e79e54cb5 100644
--- a/data_descriptors/variables/opmonlev.osaltdiff.json
+++ b/data_descriptors/variables/opmonlev.osaltdiff.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.osaltdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.osaltpadvect.json b/data_descriptors/variables/opmonlev.osaltpadvect.json
index c84ac5344..0938b991e 100644
--- a/data_descriptors/variables/opmonlev.osaltpadvect.json
+++ b/data_descriptors/variables/opmonlev.osaltpadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.osaltpadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.osaltpmdiff.json b/data_descriptors/variables/opmonlev.osaltpmdiff.json
index b45316cac..4de677bf8 100644
--- a/data_descriptors/variables/opmonlev.osaltpmdiff.json
+++ b/data_descriptors/variables/opmonlev.osaltpmdiff.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.osaltpmdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.osaltpsmadvect.json b/data_descriptors/variables/opmonlev.osaltpsmadvect.json
index f9d6bf90a..085330e72 100644
--- a/data_descriptors/variables/opmonlev.osaltpsmadvect.json
+++ b/data_descriptors/variables/opmonlev.osaltpsmadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.osaltpsmadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.osaltrmadvect.json b/data_descriptors/variables/opmonlev.osaltrmadvect.json
index e9134fcee..ed1d6a9bb 100644
--- a/data_descriptors/variables/opmonlev.osaltrmadvect.json
+++ b/data_descriptors/variables/opmonlev.osaltrmadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.osaltrmadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.osalttend.json b/data_descriptors/variables/opmonlev.osalttend.json
index b9439c14e..f6d631cb7 100644
--- a/data_descriptors/variables/opmonlev.osalttend.json
+++ b/data_descriptors/variables/opmonlev.osalttend.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.osalttend.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.pabigthetao.json b/data_descriptors/variables/opmonlev.pabigthetao.json
index d3e49eb8a..d11d696d9 100644
--- a/data_descriptors/variables/opmonlev.pabigthetao.json
+++ b/data_descriptors/variables/opmonlev.pabigthetao.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.pabigthetao.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.pathetao.json b/data_descriptors/variables/opmonlev.pathetao.json
index ab760fa7f..12a83c55f 100644
--- a/data_descriptors/variables/opmonlev.pathetao.json
+++ b/data_descriptors/variables/opmonlev.pathetao.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.pathetao.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.prbigthetao.json b/data_descriptors/variables/opmonlev.prbigthetao.json
index ceb078b62..b6cee1450 100644
--- a/data_descriptors/variables/opmonlev.prbigthetao.json
+++ b/data_descriptors/variables/opmonlev.prbigthetao.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.prbigthetao.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.prthetao.json b/data_descriptors/variables/opmonlev.prthetao.json
index 76e90e4b5..72ebfd240 100644
--- a/data_descriptors/variables/opmonlev.prthetao.json
+++ b/data_descriptors/variables/opmonlev.prthetao.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.prthetao.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.prw18o.json b/data_descriptors/variables/opmonlev.prw18o.json
index e79660b8d..34fa6f8c6 100644
--- a/data_descriptors/variables/opmonlev.prw18o.json
+++ b/data_descriptors/variables/opmonlev.prw18o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.prw18o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.rsdo.json b/data_descriptors/variables/opmonlev.rsdo.json
index 64e9017fd..b41b68d5f 100644
--- a/data_descriptors/variables/opmonlev.rsdo.json
+++ b/data_descriptors/variables/opmonlev.rsdo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.rsdo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.rsdoabsorb.json b/data_descriptors/variables/opmonlev.rsdoabsorb.json
index ba21e4ae8..9ea26a683 100644
--- a/data_descriptors/variables/opmonlev.rsdoabsorb.json
+++ b/data_descriptors/variables/opmonlev.rsdoabsorb.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.rsdoabsorb.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.sf6.json b/data_descriptors/variables/opmonlev.sf6.json
index 13d1baf4e..f4765514f 100644
--- a/data_descriptors/variables/opmonlev.sf6.json
+++ b/data_descriptors/variables/opmonlev.sf6.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.sf6.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.so.json b/data_descriptors/variables/opmonlev.so.json
index b6f83b225..557974bf8 100644
--- a/data_descriptors/variables/opmonlev.so.json
+++ b/data_descriptors/variables/opmonlev.so.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.so.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.sw17o.json b/data_descriptors/variables/opmonlev.sw17o.json
index a77b1bd25..88d381e73 100644
--- a/data_descriptors/variables/opmonlev.sw17o.json
+++ b/data_descriptors/variables/opmonlev.sw17o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.sw17o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.sw18o.json b/data_descriptors/variables/opmonlev.sw18o.json
index 04e8e4a31..cb50dc923 100644
--- a/data_descriptors/variables/opmonlev.sw18o.json
+++ b/data_descriptors/variables/opmonlev.sw18o.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.sw18o.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.sw2h.json b/data_descriptors/variables/opmonlev.sw2h.json
index 4bc2df17e..fe782ecf6 100644
--- a/data_descriptors/variables/opmonlev.sw2h.json
+++ b/data_descriptors/variables/opmonlev.sw2h.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.sw2h.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.thetao.json b/data_descriptors/variables/opmonlev.thetao.json
index 980673e0b..2c1e1cc76 100644
--- a/data_descriptors/variables/opmonlev.thetao.json
+++ b/data_descriptors/variables/opmonlev.thetao.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.thetao.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.thkcello.json b/data_descriptors/variables/opmonlev.thkcello.json
index ef33f9b71..373f7cced 100644
--- a/data_descriptors/variables/opmonlev.thkcello.json
+++ b/data_descriptors/variables/opmonlev.thkcello.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.thkcello.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.umo.json b/data_descriptors/variables/opmonlev.umo.json
index 759f5e5fd..a27a0bbec 100644
--- a/data_descriptors/variables/opmonlev.umo.json
+++ b/data_descriptors/variables/opmonlev.umo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.umo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.uo.json b/data_descriptors/variables/opmonlev.uo.json
index 4853fc9c9..729b9639d 100644
--- a/data_descriptors/variables/opmonlev.uo.json
+++ b/data_descriptors/variables/opmonlev.uo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.uo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.vmo.json b/data_descriptors/variables/opmonlev.vmo.json
index 5c573ffb3..02c2efaf4 100644
--- a/data_descriptors/variables/opmonlev.vmo.json
+++ b/data_descriptors/variables/opmonlev.vmo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.vmo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.vo.json b/data_descriptors/variables/opmonlev.vo.json
index 9e06e137c..5db4c9707 100644
--- a/data_descriptors/variables/opmonlev.vo.json
+++ b/data_descriptors/variables/opmonlev.vo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.vo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.volcello.json b/data_descriptors/variables/opmonlev.volcello.json
index 6e1a25c88..fd4feaad0 100644
--- a/data_descriptors/variables/opmonlev.volcello.json
+++ b/data_descriptors/variables/opmonlev.volcello.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.volcello.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.wmo.json b/data_descriptors/variables/opmonlev.wmo.json
index 79e25152a..09d3573b0 100644
--- a/data_descriptors/variables/opmonlev.wmo.json
+++ b/data_descriptors/variables/opmonlev.wmo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.wmo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.wo.json b/data_descriptors/variables/opmonlev.wo.json
index deb5142f5..5454287fa 100644
--- a/data_descriptors/variables/opmonlev.wo.json
+++ b/data_descriptors/variables/opmonlev.wo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.wo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.zfullo.json b/data_descriptors/variables/opmonlev.zfullo.json
index 3341f18e7..7dc8b71e4 100644
--- a/data_descriptors/variables/opmonlev.zfullo.json
+++ b/data_descriptors/variables/opmonlev.zfullo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.zfullo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonlev.zhalfo.json b/data_descriptors/variables/opmonlev.zhalfo.json
index 8cd19e6ad..f6c218cbd 100644
--- a/data_descriptors/variables/opmonlev.zhalfo.json
+++ b/data_descriptors/variables/opmonlev.zhalfo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonlev.zhalfo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.hfbasin.json b/data_descriptors/variables/opmonz.hfbasin.json
index b78c20269..d99f97ece 100644
--- a/data_descriptors/variables/opmonz.hfbasin.json
+++ b/data_descriptors/variables/opmonz.hfbasin.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.hfbasin.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.hfbasinpadv.json b/data_descriptors/variables/opmonz.hfbasinpadv.json
index 65a499354..516a201d7 100644
--- a/data_descriptors/variables/opmonz.hfbasinpadv.json
+++ b/data_descriptors/variables/opmonz.hfbasinpadv.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.hfbasinpadv.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.hfbasinpmadv.json b/data_descriptors/variables/opmonz.hfbasinpmadv.json
index 6b3f9d7a6..5e5a63124 100644
--- a/data_descriptors/variables/opmonz.hfbasinpmadv.json
+++ b/data_descriptors/variables/opmonz.hfbasinpmadv.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.hfbasinpmadv.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.hfbasinpmdiff.json b/data_descriptors/variables/opmonz.hfbasinpmdiff.json
index 254d74c91..4ac6fb8c0 100644
--- a/data_descriptors/variables/opmonz.hfbasinpmdiff.json
+++ b/data_descriptors/variables/opmonz.hfbasinpmdiff.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.hfbasinpmdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.hfbasinpsmadv.json b/data_descriptors/variables/opmonz.hfbasinpsmadv.json
index f72ff0974..9de4af8be 100644
--- a/data_descriptors/variables/opmonz.hfbasinpsmadv.json
+++ b/data_descriptors/variables/opmonz.hfbasinpsmadv.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.hfbasinpsmadv.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.htovgyre.json b/data_descriptors/variables/opmonz.htovgyre.json
index 7992ba00c..13a17861c 100644
--- a/data_descriptors/variables/opmonz.htovgyre.json
+++ b/data_descriptors/variables/opmonz.htovgyre.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.htovgyre.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.htovovrt.json b/data_descriptors/variables/opmonz.htovovrt.json
index 1135f395d..d5492f4fd 100644
--- a/data_descriptors/variables/opmonz.htovovrt.json
+++ b/data_descriptors/variables/opmonz.htovovrt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.htovovrt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.msftmrho.json b/data_descriptors/variables/opmonz.msftmrho.json
index 9dc5d20a7..f586c2634 100644
--- a/data_descriptors/variables/opmonz.msftmrho.json
+++ b/data_descriptors/variables/opmonz.msftmrho.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.msftmrho.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.msftmrhompa.json b/data_descriptors/variables/opmonz.msftmrhompa.json
index c8af77929..c7bcd34e1 100644
--- a/data_descriptors/variables/opmonz.msftmrhompa.json
+++ b/data_descriptors/variables/opmonz.msftmrhompa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.msftmrhompa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.msftmz.json b/data_descriptors/variables/opmonz.msftmz.json
index 6a26c6844..9dffa626b 100644
--- a/data_descriptors/variables/opmonz.msftmz.json
+++ b/data_descriptors/variables/opmonz.msftmz.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.msftmz.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.msftmzmpa.json b/data_descriptors/variables/opmonz.msftmzmpa.json
index 549448698..c14baa175 100644
--- a/data_descriptors/variables/opmonz.msftmzmpa.json
+++ b/data_descriptors/variables/opmonz.msftmzmpa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.msftmzmpa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.msftmzsmpa.json b/data_descriptors/variables/opmonz.msftmzsmpa.json
index 4011dfad0..85590f5e2 100644
--- a/data_descriptors/variables/opmonz.msftmzsmpa.json
+++ b/data_descriptors/variables/opmonz.msftmzsmpa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.msftmzsmpa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.msftyzsmpa.json b/data_descriptors/variables/opmonz.msftyzsmpa.json
index 851052b66..9f92c9e4e 100644
--- a/data_descriptors/variables/opmonz.msftyzsmpa.json
+++ b/data_descriptors/variables/opmonz.msftyzsmpa.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.msftyzsmpa.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.sltbasin.json b/data_descriptors/variables/opmonz.sltbasin.json
index e50328ae3..303c99e40 100644
--- a/data_descriptors/variables/opmonz.sltbasin.json
+++ b/data_descriptors/variables/opmonz.sltbasin.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.sltbasin.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.sltovgyre.json b/data_descriptors/variables/opmonz.sltovgyre.json
index 0a87c8f32..112966a0f 100644
--- a/data_descriptors/variables/opmonz.sltovgyre.json
+++ b/data_descriptors/variables/opmonz.sltovgyre.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.sltovgyre.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opmonz.sltovovrt.json b/data_descriptors/variables/opmonz.sltovovrt.json
index 6cc084d35..dccb58663 100644
--- a/data_descriptors/variables/opmonz.sltovovrt.json
+++ b/data_descriptors/variables/opmonz.sltovovrt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opmonz.sltovovrt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opmonz.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyr.dispkexyfo.json b/data_descriptors/variables/opyr.dispkexyfo.json
index ceb89dfed..87becffee 100644
--- a/data_descriptors/variables/opyr.dispkexyfo.json
+++ b/data_descriptors/variables/opyr.dispkexyfo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyr.dispkexyfo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyr.ocontempmint.json b/data_descriptors/variables/opyr.ocontempmint.json
index 025ed63ff..6a60bc7da 100644
--- a/data_descriptors/variables/opyr.ocontempmint.json
+++ b/data_descriptors/variables/opyr.ocontempmint.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyr.ocontempmint.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyr.opottempmint.json b/data_descriptors/variables/opyr.opottempmint.json
index deaae928f..de7af7f4c 100644
--- a/data_descriptors/variables/opyr.opottempmint.json
+++ b/data_descriptors/variables/opyr.opottempmint.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyr.opottempmint.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyr.somint.json b/data_descriptors/variables/opyr.somint.json
index 8e62c4e69..8593db5c5 100644
--- a/data_descriptors/variables/opyr.somint.json
+++ b/data_descriptors/variables/opyr.somint.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyr.somint.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyr.tnkebto.json b/data_descriptors/variables/opyr.tnkebto.json
index dcca2c966..c22da14ff 100644
--- a/data_descriptors/variables/opyr.tnkebto.json
+++ b/data_descriptors/variables/opyr.tnkebto.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyr.tnkebto.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyr.tnpeo.json b/data_descriptors/variables/opyr.tnpeo.json
index dfaf40a07..ee74fe356 100644
--- a/data_descriptors/variables/opyr.tnpeo.json
+++ b/data_descriptors/variables/opyr.tnpeo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyr.tnpeo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyr.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.cfc11.json b/data_descriptors/variables/opyrlev.cfc11.json
index dca17c021..85cb116c7 100644
--- a/data_descriptors/variables/opyrlev.cfc11.json
+++ b/data_descriptors/variables/opyrlev.cfc11.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.cfc11.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.cfc12.json b/data_descriptors/variables/opyrlev.cfc12.json
index 19ea491d1..a60d2ee7f 100644
--- a/data_descriptors/variables/opyrlev.cfc12.json
+++ b/data_descriptors/variables/opyrlev.cfc12.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.cfc12.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.difmxybo.json b/data_descriptors/variables/opyrlev.difmxybo.json
index 41608ef43..e553cc65b 100644
--- a/data_descriptors/variables/opyrlev.difmxybo.json
+++ b/data_descriptors/variables/opyrlev.difmxybo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.difmxybo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.difmxylo.json b/data_descriptors/variables/opyrlev.difmxylo.json
index 1ed06a15d..230f52666 100644
--- a/data_descriptors/variables/opyrlev.difmxylo.json
+++ b/data_descriptors/variables/opyrlev.difmxylo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.difmxylo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.diftrblo.json b/data_descriptors/variables/opyrlev.diftrblo.json
index 827f0a72e..64e726bb3 100644
--- a/data_descriptors/variables/opyrlev.diftrblo.json
+++ b/data_descriptors/variables/opyrlev.diftrblo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.diftrblo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.diftrelo.json b/data_descriptors/variables/opyrlev.diftrelo.json
index b9bd74294..49ce80e15 100644
--- a/data_descriptors/variables/opyrlev.diftrelo.json
+++ b/data_descriptors/variables/opyrlev.diftrelo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.diftrelo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.difvho.json b/data_descriptors/variables/opyrlev.difvho.json
index 9e71bee8e..ccf67747a 100644
--- a/data_descriptors/variables/opyrlev.difvho.json
+++ b/data_descriptors/variables/opyrlev.difvho.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.difvho.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.difvso.json b/data_descriptors/variables/opyrlev.difvso.json
index 0aef2c51f..3421e73c2 100644
--- a/data_descriptors/variables/opyrlev.difvso.json
+++ b/data_descriptors/variables/opyrlev.difvso.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.difvso.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.ocontempdiff.json b/data_descriptors/variables/opyrlev.ocontempdiff.json
index 780ef4dbf..74710f46c 100644
--- a/data_descriptors/variables/opyrlev.ocontempdiff.json
+++ b/data_descriptors/variables/opyrlev.ocontempdiff.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.ocontempdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.ocontemppadvect.json b/data_descriptors/variables/opyrlev.ocontemppadvect.json
index 0a30478a1..361194902 100644
--- a/data_descriptors/variables/opyrlev.ocontemppadvect.json
+++ b/data_descriptors/variables/opyrlev.ocontemppadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.ocontemppadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.ocontemppmdiff.json b/data_descriptors/variables/opyrlev.ocontemppmdiff.json
index 3890b0355..72b9cf977 100644
--- a/data_descriptors/variables/opyrlev.ocontemppmdiff.json
+++ b/data_descriptors/variables/opyrlev.ocontemppmdiff.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.ocontemppmdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.ocontemppsmadvect.json b/data_descriptors/variables/opyrlev.ocontemppsmadvect.json
index 1433606a2..a83f7a6e4 100644
--- a/data_descriptors/variables/opyrlev.ocontemppsmadvect.json
+++ b/data_descriptors/variables/opyrlev.ocontemppsmadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.ocontemppsmadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.ocontemprmadvect.json b/data_descriptors/variables/opyrlev.ocontemprmadvect.json
index 5cb9ffab0..d1a6efbfe 100644
--- a/data_descriptors/variables/opyrlev.ocontemprmadvect.json
+++ b/data_descriptors/variables/opyrlev.ocontemprmadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.ocontemprmadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.ocontemptend.json b/data_descriptors/variables/opyrlev.ocontemptend.json
index f141f904c..4d12f07cd 100644
--- a/data_descriptors/variables/opyrlev.ocontemptend.json
+++ b/data_descriptors/variables/opyrlev.ocontemptend.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.ocontemptend.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.opottempdiff.json b/data_descriptors/variables/opyrlev.opottempdiff.json
index a423b492c..70621706d 100644
--- a/data_descriptors/variables/opyrlev.opottempdiff.json
+++ b/data_descriptors/variables/opyrlev.opottempdiff.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.opottempdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.opottemppadvect.json b/data_descriptors/variables/opyrlev.opottemppadvect.json
index 0fb9ea62d..3611e862c 100644
--- a/data_descriptors/variables/opyrlev.opottemppadvect.json
+++ b/data_descriptors/variables/opyrlev.opottemppadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.opottemppadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.opottemppmdiff.json b/data_descriptors/variables/opyrlev.opottemppmdiff.json
index 9d45ade00..4c62e5541 100644
--- a/data_descriptors/variables/opyrlev.opottemppmdiff.json
+++ b/data_descriptors/variables/opyrlev.opottemppmdiff.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.opottemppmdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.opottemppsmadvect.json b/data_descriptors/variables/opyrlev.opottemppsmadvect.json
index 64bb30497..a1fd1b9bc 100644
--- a/data_descriptors/variables/opyrlev.opottemppsmadvect.json
+++ b/data_descriptors/variables/opyrlev.opottemppsmadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.opottemppsmadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.opottemprmadvect.json b/data_descriptors/variables/opyrlev.opottemprmadvect.json
index 985937dc1..a3420e41b 100644
--- a/data_descriptors/variables/opyrlev.opottemprmadvect.json
+++ b/data_descriptors/variables/opyrlev.opottemprmadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.opottemprmadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.opottemptend.json b/data_descriptors/variables/opyrlev.opottemptend.json
index 3ba0c362f..d10f5cc1f 100644
--- a/data_descriptors/variables/opyrlev.opottemptend.json
+++ b/data_descriptors/variables/opyrlev.opottemptend.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.opottemptend.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.osaltdiff.json b/data_descriptors/variables/opyrlev.osaltdiff.json
index 58adf06c8..553d40816 100644
--- a/data_descriptors/variables/opyrlev.osaltdiff.json
+++ b/data_descriptors/variables/opyrlev.osaltdiff.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.osaltdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.osaltpadvect.json b/data_descriptors/variables/opyrlev.osaltpadvect.json
index fff3a9186..eaffd5011 100644
--- a/data_descriptors/variables/opyrlev.osaltpadvect.json
+++ b/data_descriptors/variables/opyrlev.osaltpadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.osaltpadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.osaltpmdiff.json b/data_descriptors/variables/opyrlev.osaltpmdiff.json
index 596539a06..5ea2a3d5c 100644
--- a/data_descriptors/variables/opyrlev.osaltpmdiff.json
+++ b/data_descriptors/variables/opyrlev.osaltpmdiff.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.osaltpmdiff.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.osaltpsmadvect.json b/data_descriptors/variables/opyrlev.osaltpsmadvect.json
index 4d7faff64..283018712 100644
--- a/data_descriptors/variables/opyrlev.osaltpsmadvect.json
+++ b/data_descriptors/variables/opyrlev.osaltpsmadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.osaltpsmadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.osaltrmadvect.json b/data_descriptors/variables/opyrlev.osaltrmadvect.json
index 77769b684..536aeee06 100644
--- a/data_descriptors/variables/opyrlev.osaltrmadvect.json
+++ b/data_descriptors/variables/opyrlev.osaltrmadvect.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.osaltrmadvect.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.osalttend.json b/data_descriptors/variables/opyrlev.osalttend.json
index 9f3f015a0..75e01d46d 100644
--- a/data_descriptors/variables/opyrlev.osalttend.json
+++ b/data_descriptors/variables/opyrlev.osalttend.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.osalttend.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.rsdoabsorb.json b/data_descriptors/variables/opyrlev.rsdoabsorb.json
index 14afcfb9e..e0609bfd1 100644
--- a/data_descriptors/variables/opyrlev.rsdoabsorb.json
+++ b/data_descriptors/variables/opyrlev.rsdoabsorb.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.rsdoabsorb.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.sf6.json b/data_descriptors/variables/opyrlev.sf6.json
index 047ccce66..0ff0c90e0 100644
--- a/data_descriptors/variables/opyrlev.sf6.json
+++ b/data_descriptors/variables/opyrlev.sf6.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.sf6.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.volcello.json b/data_descriptors/variables/opyrlev.volcello.json
index 451bfb856..694218bfb 100644
--- a/data_descriptors/variables/opyrlev.volcello.json
+++ b/data_descriptors/variables/opyrlev.volcello.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.volcello.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/opyrlev.zfullo.json b/data_descriptors/variables/opyrlev.zfullo.json
index fc1ad8a01..8d6f3fc18 100644
--- a/data_descriptors/variables/opyrlev.zfullo.json
+++ b/data_descriptors/variables/opyrlev.zfullo.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "opyrlev.zfullo.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "opyrlev.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/siday.siconc.json b/data_descriptors/variables/siday.siconc.json
index 4427eed05..82a31e92e 100644
--- a/data_descriptors/variables/siday.siconc.json
+++ b/data_descriptors/variables/siday.siconc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "siday.siconc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "siday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/siday.siconca.json b/data_descriptors/variables/siday.siconca.json
index 1acdfd260..7ad663220 100644
--- a/data_descriptors/variables/siday.siconca.json
+++ b/data_descriptors/variables/siday.siconca.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "siday.siconca.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "siday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/siday.sisnthick.json b/data_descriptors/variables/siday.sisnthick.json
index 03e2703db..0be765ef0 100644
--- a/data_descriptors/variables/siday.sisnthick.json
+++ b/data_descriptors/variables/siday.sisnthick.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "siday.sisnthick.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "siday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/siday.sispeed.json b/data_descriptors/variables/siday.sispeed.json
index 52167e07b..1030ce367 100644
--- a/data_descriptors/variables/siday.sispeed.json
+++ b/data_descriptors/variables/siday.sispeed.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "siday.sispeed.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "siday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/siday.sitemptop.json b/data_descriptors/variables/siday.sitemptop.json
index 66269d1af..d38dafee3 100644
--- a/data_descriptors/variables/siday.sitemptop.json
+++ b/data_descriptors/variables/siday.sitemptop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "siday.sitemptop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "siday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/siday.sithick.json b/data_descriptors/variables/siday.sithick.json
index b6cb76501..db3f873d5 100644
--- a/data_descriptors/variables/siday.sithick.json
+++ b/data_descriptors/variables/siday.sithick.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "siday.sithick.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "siday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/siday.sitimefrac.json b/data_descriptors/variables/siday.sitimefrac.json
index f1a30e8a4..bffa220cb 100644
--- a/data_descriptors/variables/siday.sitimefrac.json
+++ b/data_descriptors/variables/siday.sitimefrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "siday.sitimefrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "siday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/siday.siu.json b/data_descriptors/variables/siday.siu.json
index 020620a99..9a2c81677 100644
--- a/data_descriptors/variables/siday.siu.json
+++ b/data_descriptors/variables/siday.siu.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "siday.siu.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "siday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/siday.siv.json b/data_descriptors/variables/siday.siv.json
index 00146c556..cd18bb447 100644
--- a/data_descriptors/variables/siday.siv.json
+++ b/data_descriptors/variables/siday.siv.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "siday.siv.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "siday.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sfdsi.json b/data_descriptors/variables/simon.sfdsi.json
index c6480dd8b..7803d8f7e 100644
--- a/data_descriptors/variables/simon.sfdsi.json
+++ b/data_descriptors/variables/simon.sfdsi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sfdsi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siage.json b/data_descriptors/variables/simon.siage.json
index 445bcc629..0153077cd 100644
--- a/data_descriptors/variables/simon.siage.json
+++ b/data_descriptors/variables/simon.siage.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siage.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siareaacrossline.json b/data_descriptors/variables/simon.siareaacrossline.json
index 0ece33e38..ed4655ed6 100644
--- a/data_descriptors/variables/simon.siareaacrossline.json
+++ b/data_descriptors/variables/simon.siareaacrossline.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siareaacrossline.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siarean.json b/data_descriptors/variables/simon.siarean.json
index 22c0d5afb..3369cfea9 100644
--- a/data_descriptors/variables/simon.siarean.json
+++ b/data_descriptors/variables/simon.siarean.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siarean.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siareas.json b/data_descriptors/variables/simon.siareas.json
index e72e62eb7..6f8b6ccb7 100644
--- a/data_descriptors/variables/simon.siareas.json
+++ b/data_descriptors/variables/simon.siareas.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siareas.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sicompstren.json b/data_descriptors/variables/simon.sicompstren.json
index c69d6d13f..8b7532ee9 100644
--- a/data_descriptors/variables/simon.sicompstren.json
+++ b/data_descriptors/variables/simon.sicompstren.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sicompstren.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siconc.json b/data_descriptors/variables/simon.siconc.json
index 825502cda..cabb16372 100644
--- a/data_descriptors/variables/simon.siconc.json
+++ b/data_descriptors/variables/simon.siconc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siconc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siconca.json b/data_descriptors/variables/simon.siconca.json
index 28981b46b..74a9d8b74 100644
--- a/data_descriptors/variables/simon.siconca.json
+++ b/data_descriptors/variables/simon.siconca.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siconca.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sidconcdyn.json b/data_descriptors/variables/simon.sidconcdyn.json
index d50e572be..b784722f2 100644
--- a/data_descriptors/variables/simon.sidconcdyn.json
+++ b/data_descriptors/variables/simon.sidconcdyn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sidconcdyn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sidconcth.json b/data_descriptors/variables/simon.sidconcth.json
index 5de727a2e..a8aafbd28 100644
--- a/data_descriptors/variables/simon.sidconcth.json
+++ b/data_descriptors/variables/simon.sidconcth.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sidconcth.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sidmassdyn.json b/data_descriptors/variables/simon.sidmassdyn.json
index cccf4d7ef..e72c20435 100644
--- a/data_descriptors/variables/simon.sidmassdyn.json
+++ b/data_descriptors/variables/simon.sidmassdyn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sidmassdyn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sidmassevapsubl.json b/data_descriptors/variables/simon.sidmassevapsubl.json
index f869d3e7f..00a193666 100644
--- a/data_descriptors/variables/simon.sidmassevapsubl.json
+++ b/data_descriptors/variables/simon.sidmassevapsubl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sidmassevapsubl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sidmassgrowthbot.json b/data_descriptors/variables/simon.sidmassgrowthbot.json
index 1aeb7cf25..63730e7b1 100644
--- a/data_descriptors/variables/simon.sidmassgrowthbot.json
+++ b/data_descriptors/variables/simon.sidmassgrowthbot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sidmassgrowthbot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sidmassgrowthwat.json b/data_descriptors/variables/simon.sidmassgrowthwat.json
index 4cf9ab797..8ea0040d5 100644
--- a/data_descriptors/variables/simon.sidmassgrowthwat.json
+++ b/data_descriptors/variables/simon.sidmassgrowthwat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sidmassgrowthwat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sidmasslat.json b/data_descriptors/variables/simon.sidmasslat.json
index eee7f47f4..8f827d267 100644
--- a/data_descriptors/variables/simon.sidmasslat.json
+++ b/data_descriptors/variables/simon.sidmasslat.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sidmasslat.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sidmassmeltbot.json b/data_descriptors/variables/simon.sidmassmeltbot.json
index 0b22e75af..db75de05b 100644
--- a/data_descriptors/variables/simon.sidmassmeltbot.json
+++ b/data_descriptors/variables/simon.sidmassmeltbot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sidmassmeltbot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sidmassmelttop.json b/data_descriptors/variables/simon.sidmassmelttop.json
index 0b0e27ccd..a413374ac 100644
--- a/data_descriptors/variables/simon.sidmassmelttop.json
+++ b/data_descriptors/variables/simon.sidmassmelttop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sidmassmelttop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sidmasssi.json b/data_descriptors/variables/simon.sidmasssi.json
index dff1278dc..b997bfa81 100644
--- a/data_descriptors/variables/simon.sidmasssi.json
+++ b/data_descriptors/variables/simon.sidmasssi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sidmasssi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sidmassth.json b/data_descriptors/variables/simon.sidmassth.json
index 88f5ab763..36f32d529 100644
--- a/data_descriptors/variables/simon.sidmassth.json
+++ b/data_descriptors/variables/simon.sidmassth.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sidmassth.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sidmasstranx.json b/data_descriptors/variables/simon.sidmasstranx.json
index 6714a8398..1ab3f5bdb 100644
--- a/data_descriptors/variables/simon.sidmasstranx.json
+++ b/data_descriptors/variables/simon.sidmasstranx.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sidmasstranx.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sidmasstrany.json b/data_descriptors/variables/simon.sidmasstrany.json
index e0ac8c257..b8ddc0e15 100644
--- a/data_descriptors/variables/simon.sidmasstrany.json
+++ b/data_descriptors/variables/simon.sidmasstrany.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sidmasstrany.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sidragbot.json b/data_descriptors/variables/simon.sidragbot.json
index 651a7cae6..1d5dd4736 100644
--- a/data_descriptors/variables/simon.sidragbot.json
+++ b/data_descriptors/variables/simon.sidragbot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sidragbot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sidragtop.json b/data_descriptors/variables/simon.sidragtop.json
index 31de4928c..b828b3374 100644
--- a/data_descriptors/variables/simon.sidragtop.json
+++ b/data_descriptors/variables/simon.sidragtop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sidragtop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siextentn.json b/data_descriptors/variables/simon.siextentn.json
index 2bc26d32f..ace2e4070 100644
--- a/data_descriptors/variables/simon.siextentn.json
+++ b/data_descriptors/variables/simon.siextentn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siextentn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siextents.json b/data_descriptors/variables/simon.siextents.json
index 25a42ce1a..ba05765ac 100644
--- a/data_descriptors/variables/simon.siextents.json
+++ b/data_descriptors/variables/simon.siextents.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siextents.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sifb.json b/data_descriptors/variables/simon.sifb.json
index 6a4cba1ce..289c10be5 100644
--- a/data_descriptors/variables/simon.sifb.json
+++ b/data_descriptors/variables/simon.sifb.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sifb.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siflcondbot.json b/data_descriptors/variables/simon.siflcondbot.json
index 5f588e5da..cd2db189c 100644
--- a/data_descriptors/variables/simon.siflcondbot.json
+++ b/data_descriptors/variables/simon.siflcondbot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siflcondbot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siflcondtop.json b/data_descriptors/variables/simon.siflcondtop.json
index 5137e8d85..5484bb063 100644
--- a/data_descriptors/variables/simon.siflcondtop.json
+++ b/data_descriptors/variables/simon.siflcondtop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siflcondtop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siflfwbot.json b/data_descriptors/variables/simon.siflfwbot.json
index 6c5cc716e..d6f77c2da 100644
--- a/data_descriptors/variables/simon.siflfwbot.json
+++ b/data_descriptors/variables/simon.siflfwbot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siflfwbot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siflfwdrain.json b/data_descriptors/variables/simon.siflfwdrain.json
index b6199e71b..e66624fc9 100644
--- a/data_descriptors/variables/simon.siflfwdrain.json
+++ b/data_descriptors/variables/simon.siflfwdrain.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siflfwdrain.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sifllatstop.json b/data_descriptors/variables/simon.sifllatstop.json
index cb946a1a1..a82b5e97f 100644
--- a/data_descriptors/variables/simon.sifllatstop.json
+++ b/data_descriptors/variables/simon.sifllatstop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sifllatstop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sifllwdtop.json b/data_descriptors/variables/simon.sifllwdtop.json
index dea73e524..ec98dc132 100644
--- a/data_descriptors/variables/simon.sifllwdtop.json
+++ b/data_descriptors/variables/simon.sifllwdtop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sifllwdtop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sifllwutop.json b/data_descriptors/variables/simon.sifllwutop.json
index 176b766c9..e4e6b6af9 100644
--- a/data_descriptors/variables/simon.sifllwutop.json
+++ b/data_descriptors/variables/simon.sifllwutop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sifllwutop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siflsenstop.json b/data_descriptors/variables/simon.siflsenstop.json
index 4daf46a90..c1943e9cf 100644
--- a/data_descriptors/variables/simon.siflsenstop.json
+++ b/data_descriptors/variables/simon.siflsenstop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siflsenstop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siflsensupbot.json b/data_descriptors/variables/simon.siflsensupbot.json
index 979c43080..0b16335eb 100644
--- a/data_descriptors/variables/simon.siflsensupbot.json
+++ b/data_descriptors/variables/simon.siflsensupbot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siflsensupbot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siflswdbot.json b/data_descriptors/variables/simon.siflswdbot.json
index 26340830b..d32dc47a3 100644
--- a/data_descriptors/variables/simon.siflswdbot.json
+++ b/data_descriptors/variables/simon.siflswdbot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siflswdbot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siflswdtop.json b/data_descriptors/variables/simon.siflswdtop.json
index 9df8642e6..fdee551b6 100644
--- a/data_descriptors/variables/simon.siflswdtop.json
+++ b/data_descriptors/variables/simon.siflswdtop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siflswdtop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siflswutop.json b/data_descriptors/variables/simon.siflswutop.json
index b01854376..235ab398e 100644
--- a/data_descriptors/variables/simon.siflswutop.json
+++ b/data_descriptors/variables/simon.siflswutop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siflswutop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siforcecoriolx.json b/data_descriptors/variables/simon.siforcecoriolx.json
index b16860e74..b8acbbb99 100644
--- a/data_descriptors/variables/simon.siforcecoriolx.json
+++ b/data_descriptors/variables/simon.siforcecoriolx.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siforcecoriolx.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siforcecorioly.json b/data_descriptors/variables/simon.siforcecorioly.json
index 46ca4540c..05335ec01 100644
--- a/data_descriptors/variables/simon.siforcecorioly.json
+++ b/data_descriptors/variables/simon.siforcecorioly.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siforcecorioly.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siforceintstrx.json b/data_descriptors/variables/simon.siforceintstrx.json
index cabfb8195..ba7d629ce 100644
--- a/data_descriptors/variables/simon.siforceintstrx.json
+++ b/data_descriptors/variables/simon.siforceintstrx.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siforceintstrx.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siforceintstry.json b/data_descriptors/variables/simon.siforceintstry.json
index 2352a9e92..7ca0e7029 100644
--- a/data_descriptors/variables/simon.siforceintstry.json
+++ b/data_descriptors/variables/simon.siforceintstry.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siforceintstry.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siforcetiltx.json b/data_descriptors/variables/simon.siforcetiltx.json
index b01e7efef..deca4b3c2 100644
--- a/data_descriptors/variables/simon.siforcetiltx.json
+++ b/data_descriptors/variables/simon.siforcetiltx.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siforcetiltx.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siforcetilty.json b/data_descriptors/variables/simon.siforcetilty.json
index 0f725229c..1faf7cc8f 100644
--- a/data_descriptors/variables/simon.siforcetilty.json
+++ b/data_descriptors/variables/simon.siforcetilty.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siforcetilty.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sihc.json b/data_descriptors/variables/simon.sihc.json
index 33bc7b8de..e06ea008f 100644
--- a/data_descriptors/variables/simon.sihc.json
+++ b/data_descriptors/variables/simon.sihc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sihc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siitdconc.json b/data_descriptors/variables/simon.siitdconc.json
index 8a5dbab44..84f139f64 100644
--- a/data_descriptors/variables/simon.siitdconc.json
+++ b/data_descriptors/variables/simon.siitdconc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siitdconc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siitdsnconc.json b/data_descriptors/variables/simon.siitdsnconc.json
index 73035e280..209592327 100644
--- a/data_descriptors/variables/simon.siitdsnconc.json
+++ b/data_descriptors/variables/simon.siitdsnconc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siitdsnconc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siitdsnthick.json b/data_descriptors/variables/simon.siitdsnthick.json
index 42ab3cfda..a3955d32a 100644
--- a/data_descriptors/variables/simon.siitdsnthick.json
+++ b/data_descriptors/variables/simon.siitdsnthick.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siitdsnthick.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siitdthick.json b/data_descriptors/variables/simon.siitdthick.json
index d328f1e30..55c9bfd0a 100644
--- a/data_descriptors/variables/simon.siitdthick.json
+++ b/data_descriptors/variables/simon.siitdthick.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siitdthick.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.simass.json b/data_descriptors/variables/simon.simass.json
index a782c0371..906dcb6a7 100644
--- a/data_descriptors/variables/simon.simass.json
+++ b/data_descriptors/variables/simon.simass.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.simass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.simassacrossline.json b/data_descriptors/variables/simon.simassacrossline.json
index 0e81bbbbd..c8fc35d31 100644
--- a/data_descriptors/variables/simon.simassacrossline.json
+++ b/data_descriptors/variables/simon.simassacrossline.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.simassacrossline.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.simpconc.json b/data_descriptors/variables/simon.simpconc.json
index 25bb9419b..76eceae70 100644
--- a/data_descriptors/variables/simon.simpconc.json
+++ b/data_descriptors/variables/simon.simpconc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.simpconc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.simpmass.json b/data_descriptors/variables/simon.simpmass.json
index 2d1fda77c..5bb9b3661 100644
--- a/data_descriptors/variables/simon.simpmass.json
+++ b/data_descriptors/variables/simon.simpmass.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.simpmass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.simprefrozen.json b/data_descriptors/variables/simon.simprefrozen.json
index b27dbf9d2..1d7efa424 100644
--- a/data_descriptors/variables/simon.simprefrozen.json
+++ b/data_descriptors/variables/simon.simprefrozen.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.simprefrozen.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sipr.json b/data_descriptors/variables/simon.sipr.json
index d2a537ea8..260f3100f 100644
--- a/data_descriptors/variables/simon.sipr.json
+++ b/data_descriptors/variables/simon.sipr.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sipr.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sirdgconc.json b/data_descriptors/variables/simon.sirdgconc.json
index 41e3de8e3..34aff7efc 100644
--- a/data_descriptors/variables/simon.sirdgconc.json
+++ b/data_descriptors/variables/simon.sirdgconc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sirdgconc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sirdgthick.json b/data_descriptors/variables/simon.sirdgthick.json
index 1724a56fa..13f1e22cd 100644
--- a/data_descriptors/variables/simon.sirdgthick.json
+++ b/data_descriptors/variables/simon.sirdgthick.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sirdgthick.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sisali.json b/data_descriptors/variables/simon.sisali.json
index 88e70303e..50e0c788a 100644
--- a/data_descriptors/variables/simon.sisali.json
+++ b/data_descriptors/variables/simon.sisali.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sisali.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sisaltmass.json b/data_descriptors/variables/simon.sisaltmass.json
index eb9b7035e..e2544917e 100644
--- a/data_descriptors/variables/simon.sisaltmass.json
+++ b/data_descriptors/variables/simon.sisaltmass.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sisaltmass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sisnconc.json b/data_descriptors/variables/simon.sisnconc.json
index e143f2224..0010706a4 100644
--- a/data_descriptors/variables/simon.sisnconc.json
+++ b/data_descriptors/variables/simon.sisnconc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sisnconc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sisnhc.json b/data_descriptors/variables/simon.sisnhc.json
index 094378d30..8f7e3832f 100644
--- a/data_descriptors/variables/simon.sisnhc.json
+++ b/data_descriptors/variables/simon.sisnhc.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sisnhc.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sisnmass.json b/data_descriptors/variables/simon.sisnmass.json
index 7729f316f..e700d38a4 100644
--- a/data_descriptors/variables/simon.sisnmass.json
+++ b/data_descriptors/variables/simon.sisnmass.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sisnmass.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sisnthick.json b/data_descriptors/variables/simon.sisnthick.json
index 3a69642f7..4e8080b4b 100644
--- a/data_descriptors/variables/simon.sisnthick.json
+++ b/data_descriptors/variables/simon.sisnthick.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sisnthick.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sispeed.json b/data_descriptors/variables/simon.sispeed.json
index d0ce8299e..e9c262664 100644
--- a/data_descriptors/variables/simon.sispeed.json
+++ b/data_descriptors/variables/simon.sispeed.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sispeed.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sistrxdtop.json b/data_descriptors/variables/simon.sistrxdtop.json
index d0fb8efdd..5e6fa57e0 100644
--- a/data_descriptors/variables/simon.sistrxdtop.json
+++ b/data_descriptors/variables/simon.sistrxdtop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sistrxdtop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sistrxubot.json b/data_descriptors/variables/simon.sistrxubot.json
index 0a3720c48..456d254fc 100644
--- a/data_descriptors/variables/simon.sistrxubot.json
+++ b/data_descriptors/variables/simon.sistrxubot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sistrxubot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sistrydtop.json b/data_descriptors/variables/simon.sistrydtop.json
index 70f309464..58767faf7 100644
--- a/data_descriptors/variables/simon.sistrydtop.json
+++ b/data_descriptors/variables/simon.sistrydtop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sistrydtop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sistryubot.json b/data_descriptors/variables/simon.sistryubot.json
index 8b7d9667b..d246f639d 100644
--- a/data_descriptors/variables/simon.sistryubot.json
+++ b/data_descriptors/variables/simon.sistryubot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sistryubot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sitempbot.json b/data_descriptors/variables/simon.sitempbot.json
index d330b7873..8d271d5ea 100644
--- a/data_descriptors/variables/simon.sitempbot.json
+++ b/data_descriptors/variables/simon.sitempbot.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sitempbot.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sitempsnic.json b/data_descriptors/variables/simon.sitempsnic.json
index 30749a2ea..eecc37f05 100644
--- a/data_descriptors/variables/simon.sitempsnic.json
+++ b/data_descriptors/variables/simon.sitempsnic.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sitempsnic.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sitemptop.json b/data_descriptors/variables/simon.sitemptop.json
index 312fff675..8f7e55739 100644
--- a/data_descriptors/variables/simon.sitemptop.json
+++ b/data_descriptors/variables/simon.sitemptop.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sitemptop.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sithick.json b/data_descriptors/variables/simon.sithick.json
index 555d9a584..e7ea4232f 100644
--- a/data_descriptors/variables/simon.sithick.json
+++ b/data_descriptors/variables/simon.sithick.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sithick.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sitimefrac.json b/data_descriptors/variables/simon.sitimefrac.json
index 497cdf6c4..21c6376c0 100644
--- a/data_descriptors/variables/simon.sitimefrac.json
+++ b/data_descriptors/variables/simon.sitimefrac.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sitimefrac.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siu.json b/data_descriptors/variables/simon.siu.json
index 83bb696b7..d97d47983 100644
--- a/data_descriptors/variables/simon.siu.json
+++ b/data_descriptors/variables/simon.siu.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siu.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.siv.json b/data_descriptors/variables/simon.siv.json
index 8eb88be71..748c18262 100644
--- a/data_descriptors/variables/simon.siv.json
+++ b/data_descriptors/variables/simon.siv.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.siv.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sivol.json b/data_descriptors/variables/simon.sivol.json
index 2ea1f0a3a..18b1b8f4b 100644
--- a/data_descriptors/variables/simon.sivol.json
+++ b/data_descriptors/variables/simon.sivol.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sivol.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sivoln.json b/data_descriptors/variables/simon.sivoln.json
index 1f91aa8fa..4bee50f84 100644
--- a/data_descriptors/variables/simon.sivoln.json
+++ b/data_descriptors/variables/simon.sivoln.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sivoln.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sivols.json b/data_descriptors/variables/simon.sivols.json
index 6dc58ab8e..c9bbe2de4 100644
--- a/data_descriptors/variables/simon.sivols.json
+++ b/data_descriptors/variables/simon.sivols.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sivols.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sndmassdyn.json b/data_descriptors/variables/simon.sndmassdyn.json
index fc46b8e1a..aecb57b47 100644
--- a/data_descriptors/variables/simon.sndmassdyn.json
+++ b/data_descriptors/variables/simon.sndmassdyn.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sndmassdyn.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sndmassmelt.json b/data_descriptors/variables/simon.sndmassmelt.json
index 16f403e47..7c3e05b2a 100644
--- a/data_descriptors/variables/simon.sndmassmelt.json
+++ b/data_descriptors/variables/simon.sndmassmelt.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sndmassmelt.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sndmasssi.json b/data_descriptors/variables/simon.sndmasssi.json
index 719101434..f7642d4ce 100644
--- a/data_descriptors/variables/simon.sndmasssi.json
+++ b/data_descriptors/variables/simon.sndmasssi.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sndmasssi.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sndmasssnf.json b/data_descriptors/variables/simon.sndmasssnf.json
index 0a54d8b30..e01d7dd26 100644
--- a/data_descriptors/variables/simon.sndmasssnf.json
+++ b/data_descriptors/variables/simon.sndmasssnf.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sndmasssnf.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sndmasssubl.json b/data_descriptors/variables/simon.sndmasssubl.json
index 1be501237..948eadc33 100644
--- a/data_descriptors/variables/simon.sndmasssubl.json
+++ b/data_descriptors/variables/simon.sndmasssubl.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sndmasssubl.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.sndmasswindrif.json b/data_descriptors/variables/simon.sndmasswindrif.json
index 3459caa85..7704881c0 100644
--- a/data_descriptors/variables/simon.sndmasswindrif.json
+++ b/data_descriptors/variables/simon.sndmasswindrif.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.sndmasswindrif.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simon.snmassacrossline.json b/data_descriptors/variables/simon.snmassacrossline.json
index 4bc7ecf67..b4c9ee4ec 100644
--- a/data_descriptors/variables/simon.snmassacrossline.json
+++ b/data_descriptors/variables/simon.snmassacrossline.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simon.snmassacrossline.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simon.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simonpt.sidivvel.json b/data_descriptors/variables/simonpt.sidivvel.json
index 9a8891b3e..9e412cb22 100644
--- a/data_descriptors/variables/simonpt.sidivvel.json
+++ b/data_descriptors/variables/simonpt.sidivvel.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simonpt.sidivvel.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simonpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simonpt.sishevel.json b/data_descriptors/variables/simonpt.sishevel.json
index dc9f82c01..d6e4b2817 100644
--- a/data_descriptors/variables/simonpt.sishevel.json
+++ b/data_descriptors/variables/simonpt.sishevel.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simonpt.sishevel.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simonpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simonpt.sistremax.json b/data_descriptors/variables/simonpt.sistremax.json
index acc1378fb..9c225f5cd 100644
--- a/data_descriptors/variables/simonpt.sistremax.json
+++ b/data_descriptors/variables/simonpt.sistremax.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simonpt.sistremax.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simonpt.json",
       "mip-era": "cmip6"
diff --git a/data_descriptors/variables/simonpt.sistresave.json b/data_descriptors/variables/simonpt.sistresave.json
index 1e1c73239..20ab2d345 100644
--- a/data_descriptors/variables/simonpt.sistresave.json
+++ b/data_descriptors/variables/simonpt.sistresave.json
@@ -2,7 +2,7 @@
   "@context": "https://wcrp-cmip.github.io/MIP_variables/data_descriptors/variables/_context",
   "id": "simonpt.sistresave.json",
   "type": "mip-variable",
-  "mip-tables": [
+  "mip_tables": [
     {
       "id": "simonpt.json",
       "mip-era": "cmip6"