cdo: cdo (Climate Data Operators) cdo: cdo: CDO is a collection of command line Operators to manipulate and cdo: analyse Climate and NWP model Data. cdo: cdo: Supported data formats are GRIB 1/2, netCDF 3/4, SERVICE, EXTRA and cdo: IEG. There are more than 600 operators available. cdo: cdo: cdo: cdo: