CDO

Hello.

I wonder if someone can please tell me which of ECMWF's grids - Tco, O, N, or F grid - to use as the GRIB file to generate the regular NETCDF file in this command

cdo -s -R -f nc4 -t ecmwf -copy <GRIB> <NETCDF>

Since the command and flags are to convert to an F grid (I assume), I would expect it's one of the Tco, O, or N grids, and am thinking it might be the Tco grid (at least) that this command and flags are written to handle; am I correct to assume that? And is it specific to one or the other (of Tco or N grid, e.g.)? If so, which?

Thank you.