Hi Cecelia, It turns out your dataset is not CF-compliant, which explains why the CDM isn't properly interpreting it. It's pretty arcane stuff: your grid-mapping variable (char rotated_pole) describes the projection using attributes named "grid_south_pole_latitude" and "grid_south_pole_longitude"; however, CF requires these attributes to be named "grid_north_pole_latitude" and "grid_north_pole_longitude" [1]. So, you'll need to convert your coordinates to use the new reference point. I have no idea how difficult that will be, but NcML [2] may be helpful. Cheers, Christian [1] http://cfconventions.org/Data/cf-conventions/cf-conventions-1.6/build/cf-conventions.html#idp7861408 [2] http://www.unidata.ucar.edu/software/thredds/current/netcdf-java/ncml/Tutorial.html Ticket Details =================== Ticket ID: EHB-236121 Department: Support netCDF Java Priority: High Status: Closed