NetCDF File with Rotated Lat/Lon Grid Causing Error

[balbrightwpc]

Hello,

I am trying to run pcp_combine on some experimental West-WRF runs we received from a partner that are in netCDF format. When running the command, I receive the following error:

ERROR :
ERROR : NcCfFile::get_grid_mapping_rotated_latitude_longitude() -> Rotated latitude longitude grid not handled in MET.
ERROR :

Here are the ncdump details of one of the netCDF files that are being used (I did not include all variables to save space):

ncdump -h west-wrf_gfs_d02_2023-01-09_12_00_00.nc
netcdf west-wrf_gfs_d02_2023-01-09_12_00_00 {
dimensions:
time = UNLIMITED ; // (1 currently)
west_east = 717 ;
south_north = 753 ;
variables:
double time(time) ;
time:standard_name = "time" ;
time:long_name = "Time" ;
time:units = "hours since 1970-01-01 00:00:00" ;
time:calendar = "standard" ;
time:axis = "T" ;
float lon(south_north, west_east) ;
lon:standard_name = "longitude" ;
lon:long_name = "Longitude" ;
lon:units = "degrees_east" ;
lon:_CoordinateAxisType = "Lon" ;
float lat(south_north, west_east) ;
lat:standard_name = "latitude" ;
lat:long_name = "Latitude" ;
lat:units = "degrees_north" ;
lat:_CoordinateAxisType = "Lat" ;
float west_east(west_east) ;
west_east:standard_name = "projection_x_coordinate" ;
west_east:long_name = "x coordinate of projection" ;
west_east:units = "degrees_east" ;
west_east:axis = "X" ;
float south_north(south_north) ;
south_north:standard_name = "projection_y_coordinate" ;
south_north:long_name = "y coordinate of projection" ;
south_north:units = "degrees_north" ;
south_north:axis = "Y" ;
int Rotated_Pole ;
Rotated_Pole:grid_north_pole_longitude = 180.f ;
Rotated_Pole:grid_north_pole_latitude = 51.f ;
Rotated_Pole:grid_mapping_name = "rotated_latitude_longitude" ;
float precip(time, south_north, west_east) ;
precip:standard_name = "total_precipitation_amount" ;
precip:long_name = "Accumulated Total Precipitation Over Simulation" ;
precip:units = "mm" ;
precip:grid_mapping = "Rotated_Pole" ;
precip:coordinates = "lat lon" ;
precip:_FillValue = 1.e+20f ;
precip:missing_value = 1.e+20f ;
// global attributes:
:CDI = "Climate Data Interface version 2.3.0 (https://mpimet.mpg.de/cdi)" ;
:_NCProperties = "version=2,netcdf=4.7.4,hdf5=1.10.7," ;
:Conventions = "CF 1.6, Standard Name Table v19" ;
:source = "/expanse/lustre/scratch/cw3eprod/temp_project/NRT_gfs_backfill/output/2023010900/wrf_2dom/wrfout_d02_2023-01-09_12_00_00" ;
:institution = "CW3E - Scripps Institution of Oceanography" ;
:title = "/expanse/lustre/scratch/cw3eprod/temp_project/NRT_gfs_backfill/output/2023010900/cf/wrfcf_gfs_d02_2023-01-09_12_00_00_temp.nc" ;
:notes = "Created with NCL script: wrfout_to_cf.ncl v2.0" ;
:created_by = "Daniel Steinhoff - [email protected]" ;
:creation_date = "Mon Oct 7 19:07:48 PDT 2024" ;
:history = "Fri Oct 11 11:47:57 2024: cdo -w -L -O merge temp1.nc temp2.nc temp3.nc temp4.nc temp5.nc temp6.nc /expanse/lustre/scratch/cw3eprod/temp_project/NRT_gfs_backfill/output/2023010900/west-wrf_2023010900/west-wrf_gfs_d02_2023-01-09_12_00_00.nc\nFri Oct 11 11:47:34 2024: cdo -w -L -O chname,Z_p,Z500 -setzaxis,surface -sellevel,500 -selname,Z_p wrfcf_gfs_d02_2023-01-09_12_00_00.nc temp1.nc" ;
:CDO = "Climate Data Operators version 2.3.0 (https://mpimet.mpg.de/cdo)" ;
}

Do you have any advice on how to handle this file? If you need any other information or if you need me to upload one of the files, please let me know. Any help would be appreciated, thank you!

Ben Albright