nco, reduce dim, netcdf

Question

I have a netcdf file

dimensions:
        lsmlat = 1400 ;
        lsmlon = 2800 ;
        time = UNLIMITED ; // (1 currently)
        lsmpft = 1 ;
variables:
        double LATIXY(lsmlat, lsmlon) ;
                LATIXY:long_name = "latitude" ;
                LATIXY:units = "degrees north" ;
        double LONGXY(lsmlat, lsmlon) ;
                LONGXY:long_name = "longitude" ;
                LONGXY:units = "degrees east" ;

I want the variables as

double LATIXY(lsmlat) ;
            LATIXY:long_name = "latitude" ;
            LATIXY:units = "degrees north" ;
    double LONGXY(lsmlon) ;
            LONGXY:long_name = "longitude" ;
            LONGXY:units = "degrees east" ;

so that the file can be read in GIS. Any nco command is appreciated. Thanks.

Answer 1

Your original file has the structure of a curvilinear grid, where both lat and lon arrays are 2-D. Your desired grid is rectangular, where both lat and lon are 1-D. The only way to do this, in general, is to regrid. The NCO operator ncremap does regridding...