corrupt grid mapping for ICTP.RegCM5-0 #91
Description
@ciarloj could you please check on RegCM5-0, for example:
ncdump -h /mnt/CORDEX_CMIP6_tmp/sim_data/CORDEX-CMIP6/DD/EUR-12/ICTP/ERA5/evaluation/r1i1p1f1/RegCM5-0/v1-r1/mon/tas/v20250415/tas_EUR-12_ERA5_evaluation_r1i1p1f1_ICTP_RegCM5-0_v1-r1_mon_19700101-19701231.nc
shows a crs grid mapping with grid_mapping_name = "rotated_latitude_longitude"
crs:proj4_params = "+proj=ob_tran +o_proj=longlat +o_lat_p=39.25 +o_lon_p=198.00 +R=6371229. +lon_0=180.0 +to_meter=0.01745329" ;
crs:grid_mapping_name = "rotated_latitude_longitude" ;
crs:latitude_of_projection_origin = 48. ;
crs:longitude_of_projection_origin = 9.75 ;
crs:grid_north_pole_latitude = 39.25 ;
crs:grid_north_pole_longitude = 198. ;
crs:false_easting = -6115.94078967002 ;
crs:false_northing = -6115.94078967002 ;
crs:crs_wkt = "PROJCS[\"unnamed\",\n",
" GEOGCS[\"Normal Sphere (r=6371229.)\",\n",
" DATUM[\"unknown\",\n",
" SPHEROID[\"sphere\",6371229.,0]],\n",
" PRIMEM[\"Greenwich\",0],\n",
" UNIT[\"degree\",0.0174532925199433]],\n",
" PROJECTION[\"Rotated_Latitude_Longitude\"],\n",
" PARAMETER[\"grid_north_pole_latitude\",39.25],\n",
" PARAMETER[\"grid_north_pole_longitude\",198.00],\n",
" PARAMETER[\"latitude_of_origin\",48.00],\n",
" PARAMETER[\"central_meridian\",9.75],\n",
" PARAMETER[\"false_easting\",-6116.],\n",
" PARAMETER[\"false_northing\",-6116.],\n",
" UNIT[\"Meter\",1]]\n",
"" ;
crs:semi_major_axis = 6371229. ;
crs:semi_minor_axis = 6371229. ;
crs:inverse_flattening = 0. ;
crs:CoordinateTransformType = "Projection" ;
crs:CoordinateAxisTypes = "GeoX GeoY" ;
This is not the EUR-12 grid as defined here. There also seems to be mixed up some lambert conformal grid attributes.