understanding remapbil of the CDO
Added by Ameer Muhammad over 2 years ago
I have a NetCDF file of regular lonlat coordinate for my watershed . I downloaded CMIP5 data from ECMWF that comes in Guassian coordinate for the entire globe. i tried to convert the CMIP5 data to regular lonlat data using the NetCDF file of my watershed using the following the CDO command.
cdo remapbil,mywatershed.nc CMIP5_Gaussian.nc CMIP5_Regular.nc
While doing so I see the CMIP is converted to my target coordinate system (mywatershed.nc coordinate), however, I also see that the CMIP5 global file is reduced to my watershed area too. My question is: does the remapbil command also clip the NetCDF during the conversion process or its the method that consider all the global grids and interpolate it to the region of interest?
Thank you,
Ameer
Replies (1)
RE: understanding remapbil of the CDO - Added by Uwe Schulzweida over 2 years ago
The bilinear method searches for the target points in the global grid. A clipping of the global grid does not take place.