CDO

Wait just spotted an error in the code block I put in, I'm calling

cdo -f grb2 copy file.nc file.grb2

Ok, so I was lacking CF standard data for some of the elements of this file, but now that I've added it in, I'm running into an issue with the standard name for my subsurface measurements; if I use depth, it thinks it is underwater measurements, and if I use height, it thinks it is above ground measurements, and lists them as heights above the surface, neither of which is right. I've tried simply setting height and positive = down, but that didn't do anything, so if anyone knows how to label my data so CDO recognizes it as height below the surface, I would be very grateful

CDO uses the attribute long_name="depth_below_land" to identify depth below land:

ncatted -a long_name,depth,o,c,"depth_below_land" file.nc
cdo -f nc copy file.nc file.grb2

Thank you! Is there a resource somewhere with all of the attributes CDO uses to identify variables and levels I can use for future reference?

No such a list does not exist. If possible, you should stick to the NetCDF CF Convention.

Yeah, I've found CF to be mostly good; the last thing I'm trying to figure out is how to designate a aTypeOfLevel as mean sea level, which doesn't have a CF convention. Right now my CDO conversion is marking my pressure reduced to mean sea level field as isobaricInPh, which I assume is the default, is there a name convention I should use for that? I've attached the current nc file I'm converting from for that one

There is no name convention for the mean sea level. I'am sure you can change the typeOfLevel in the resulting GRIB file with the GRIB tools from ecCodes.