Noresm2 1 update BLOM version and README.md file (#549)

* Update README.md file to reflect changes introduced in noresm2.1

* Change BLOM tag to v1.5.2

Externals.cfg

@@ -51,7 +51,7 @@ externals = Externals_POP.cfg
 required = False
 
 [blom]
-tag = v1.5.1
+tag = v1.5.2
 protocol = git
 repo_url = https://github.com/NorESMhub/BLOM
 local_path = components/blom

README.md

@@ -2,52 +2,22 @@
 
 [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.3905091.svg)](https://doi.org/10.5281/zenodo.3905091)
 
-[![Documentation Status](https://readthedocs.org/projects/noresm-docs/badge/?version=noresm2)](https://noresm-docs.readthedocs.io/en/noresm2/?badge=noresm2)
-
-# The Norwegian Earth System Model version 2 (NorESM2)
-The **noresm2** branch contains the NorESM2.0.X documentation, code and configurations as used for most <br />
-NorESM2-LM and NorESM2-MM CMIP6 simulations
-
-The NorESM-2.0 documentation: https://noresm-docs.readthedocs.io/en/noresm2/
-
-## Releases in noresm2
-- [release-noresm2.0.6](https://github.com/NorESMhub/NorESM/releases/tag/release-noresm2.0.6)
- - Release of NorESM2.0.6, 12th of December 2022
- - Available to reproduce CMIP6 results of NorESM2
- - Updated BLOM : options for hybrid vertical coordinates, support for NUOPC driver, changes in model diagnostics 
- - Updated CAM : corrected CCN and COSP diagnostics 
- - Link to cism-wrapper repository on NorESMhub (instead of ESCOMP) : added CISM support, Greenland enabled compsets and usermod
- - Additional SSP5-3.4 compset and emission driven SSP compsets
- - Modification in the archiving script for netcdf3 to netcdf4 conversion (uses ncks instead nccopy) 
- - Updated NorESM2.0 documentation
-
-- [release-noresm2.0.5](https://github.com/NorESMhub/NorESM/releases/tag/release-noresm2.0.5)
- - Release of NorESM2.0.5, 28th of May 2021
- - Available to reproduce CMIP6 results of NorESM2
- - Updated NorESM2.0 documentation.
-
-- [release-noresm2.0.4](https://github.com/NorESMhub/NorESM/releases/tag/release-noresm2.0.4)
- - Release of NorESM2.0.4, 9th of April 2021
- - Available to reproduce CMIP6 results of NorESM2
- - Additional Fram and Betzy settings included.
-
-- [release-noresm2.0.3](https://github.com/NorESMhub/NorESM/releases/tag/release-noresm2.0.3)
- - Release of NorESM2.0.3, 7th of April 2021 
- - Available to reproduce CMIP6 results of NorESM2
- - Betzy settings included.
-
-- [release-noresm2.0.2](https://github.com/NorESMhub/NorESM/releases/tag/release-noresm2.0.2)
- - Release of NorESM2.0.2, 20th of July 2020
- - Available to reproduce CMIP6 results of NorESM2.
-
-- [release-noresm2.0.1](https://github.com/NorESMhub/NorESM/releases/tag/release-noresm2.0.1)
- - NorESM2 version, April 2020 
- - Initial preliminary release of CMIP6 version.
-
-For a detailed description of all NorESM2.0.X releases, please see https://noresm-docs.readthedocs.io/en/noresm2/releases/
-
-### NorESM1 and CMIP5
-For the NorESM code base used in CMIP5, please see the **noresm1** branch.
+[![Documentation Status](https://readthedocs.org/projects/noresm-docs/badge/?version=noresm2.1)](https://noresm-docs.readthedocs.io/en/noresm2.1/?badge=noresm2.1)
+
+# The Norwegian Earth System Model version 2.1 (NorESM2)
+The **noresm2_1_develop** branch contains the NorESM2.1.X code and configurations, which is a<br />
+technical development version of NorESM2. Bug fixes introduced in NorESM2.1 are answer changing,<br />
+and this NorESM version does not have scientifically supported simulations.
+
+The NorESM2.1 documentation: https://noresm-docs.readthedocs.io/en/noresm2.1/
+
+## Releases in noresm2.1
+- [release-noresm2.1.2](https://github.com/NorESMhub/NorESM/releases/tag/release-noresm2.1.2)
+ - Includes updates to tool chain moldules on Betzy
+
+- [release-noresm2.1.1](https://github.com/NorESMhub/NorESM/releases/tag/release-noresm2.1.1)
+ - Includes a number of bug fixes relative to the NorESM2.0.X releases
+ - Includes a set of regression tests for targeted compset / resolution combinations
 
 
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