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cdo -f nc copy h14_2019053000_r.grib h14_2019053000.nc
- Then extract the Italian domain from the global netcdf file (lon0=5, lon1=19, lat0=36, lat1=48):
cdo -sellonlatbox,5,19,36,48 h14_2019053000.nc h14_2019053000_Italy.nc
#Note that the size of the file is vastly reduced (h14_2019053000.nc ~ 25 mb, h14_2019053000_Italy.nc ~ 70 kb)!
- Size of netCDF files can be further reduced by compression e.g.
cdo -f nc4c -z zip_6 copy h14_2019053000_r.grib h14_2019053000_compressed.nc - To convert multiple files from grib to netCDF, you can loop over all the files in the directory and apply the commands above e.g.
...
- A time series file can be created by stacking multiple daily netcdf files, for example using cdo mergetime:
cdo mergetime h27*.nc time_series.nc