Attributes {
    NC_GLOBAL {
        String title "GEOS-CF (Composition Forecast)";
        String Conventions "COARDS", "GrADS";
        String dataType "Grid";
        String history "Sat May 30 21:17:48 GMT 2026 : imported by GrADS Data Server 2.0";
        String extra_das_attribute "This is an example of metadata added using a supplementary DAS file. See testdata/extra.das for the source.";
    }
    lon {
        String grads_dim "x";
        String grads_mapping "linear";
        String grads_size "1440";
        String units "degrees_east";
        String long_name "longitude";
        Float64 minimum -180.00000000000;
        Float64 maximum 179.75000000000;
        Float32 resolution 0.25;
    }
    lat {
        String grads_dim "y";
        String grads_mapping "linear";
        String grads_size "721";
        String units "degrees_north";
        String long_name "latitude";
        Float64 minimum -90.00000000000;
        Float64 maximum 90.00000000000;
        Float32 resolution 0.25;
    }
    time {
        String grads_dim "t";
        String grads_mapping "linear";
        String grads_size "1";
        String grads_min "00z01apr2026";
        String grads_step "1mo";
        String units "days since 1-1-1 00:00:0.0";
        String long_name "time";
        String minimum "00z01apr2026";
        String maximum "00z01apr2026";
    }
    lev {
        String grads_dim "z";
        String grads_mapping "levels";
        String units "millibar";
        String long_name "altitude";
        Float64 minimum 1.00000000000;
        Float64 maximum 72.00000000000;
        Float32 resolution 1.0;
    }
    ch4 {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "methane (ch4, mw=16.05 g mol-1) mole fraction in dry air (mol mol-1) ";
    }
    co2 {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "carbon dioxide (co2, mw=44.01 g mol-1) mole fraction in dry air (mol mol-1) ";
    }
    emis_ch4 {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "net flux of methane (kg m-2 s-1) ";
    }
    emis_co2 {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "net flux of carbon dioxide (kg m-2 s-1) ";
    }
    ps {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "surface_pressure (pa) ";
    }
    qw {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "total water mass mixing ratio (kg kg-1) ";
    }
    xch4 {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "column-averaged mixing ratio of methane (mol mol-1 (dry air)) ";
    }
    xco2 {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "column-averaged mixing ratio of carbon dioxide mole fraction in dry air (mol mol-1) ";
    }
    var_ch4 {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "variance_of_ch4 (mol mol-1 mol mol-1) ";
    }
    var_co2 {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "variance_of_co2 (mol mol-1 mol mol-1) ";
    }
    var_emis_ch4 {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "variance_of_emis_ch4 (kg m-2 s-1 kg m-2 s-1) ";
    }
    var_emis_co2 {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "variance_of_emis_co2 (kg m-2 s-1 kg m-2 s-1) ";
    }
    var_ps {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "variance_of_ps (pa pa) ";
    }
    var_qw {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "variance_of_qw (kg kg-1 kg kg-1) ";
    }
    var_xch4 {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "variance_of_xch4 (mol mol-1 (dry air) mol mol-1 (dry air)) ";
    }
    var_xco2 {
        Float32 _FillValue 1.0E15;
        Float32 missing_value 1.0E15;
        String long_name "variance_of_xco2 (mol mol-1 mol mol-1) ";
    }
}