[gradsusr] gadsdf: SDF file has no discernable X coordinate.

[Joyce Meyerson]

Hi All,

I'm trying to open a netcdf file and get the error message gadsdf: SDF file has no discernable X coordinate. 
I'm not sure what my control file should look like. Any help appreciated.

Thanks,
Joyce

netcdf sic_OImon_MPI-ESM-LR_rcp85_r1i1p1_200601-210012 {
dimensions:
        time = UNLIMITED ; // (1140 currently)
        j = 220 ;
        i = 256 ;
        bnds = 2 ;
        vertices = 4 ;
variables:
        double time(time) ;
                time:bounds = "time_bnds" ;
                time:units = "days since 1850-1-1 00:00:00" ;
                time:calendar = "proleptic_gregorian" ;
                time:axis = "T" ;
                time:long_name = "time" ;
                time:standard_name = "time" ;
        double time_bnds(time, bnds) ;
        int j(j) ;
                j:units = "1" ;
                j:long_name = "cell index along second dimension" ;
        int i(i) ;
                i:units = "1" ;
                i:long_name = "cell index along first dimension" ;
        float lat(j, i) ;
                lat:standard_name = "latitude" ;
                lat:long_name = "latitude coordinate" ;
                lat:units = "degrees_north" ;
                lat:bounds = "lat_vertices" ;
        float lon(j, i) ;
                lon:standard_name = "longitude" ;
                lon:long_name = "longitude coordinate" ;
                lon:units = "degrees_east" ;
                lon:bounds = "lon_vertices" ;
        float lat_vertices(j, i, vertices) ;
                lat_vertices:units = "degrees_north" ;
        float lon_vertices(j, i, vertices) ;
                lon_vertices:units = "degrees_east" ;
        float sic(time, j, i) ;
                sic:standard_name = "sea_ice_area_fraction" ;
                sic:long_name = "Sea Ice Area Fraction" ;
                sic:comment = "fraction of grid cell covered by sea ice." ;
                sic:units = "%" ;
                sic:cell_methods = "time: mean" ;
                sic:cell_measures = "area: areacello" ;
                sic:missing_value = 1.e+20f ;
                sic:_FillValue = 1.e+20f ;
                sic:associated_files = "baseURL: http://cmip-pcmdi.llnl.gov/CMIP5/dataLocation gridspecFi
le: gridspec_seaIce_fx_MPI-ESM-LR_rcp85_r0i0p0.nc areacello: areacello_fx_MPI-ESM-LR_rcp85_r0i0p0.nc" ;
                sic:coordinates = "lat lon" ;
*********************

**************************
Joyce Meyerson
UCLA
Dept. of Oceanic & Atmospheric Sciences
7235 Math Science Bld.
Los Angeles, CA 90095-1565
hobo at atmos.ucla.edu

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