Attributes {
    yymm {
        String description "Year-Month (yyyy.mm)";
        String units "none";
    }
    lat {
        String description "Latitude grid center";
        String units "degree";
    }
    lon {
        String description "Longitude grid center";
        String units "degree";
    }
    mon {
        String description "Month";
        String units "none";
    }
    fCO2_Obs2.0 {
        Float64 _FillValue -99999.0;
        String description "Cruise weighted grid mean fCO2 from observations (SOCAT2.0)";
        String units "uatm";
        String source_URL "http://www.socat.info/";
    }
    fCO2_Clm2.0 {
        Float64 _FillValue -99999.0;
        String description "fCO2 normalized to year 2000 assuming 1.5 uatm/yr (SOCAT2.0)";
        String units "uatm";
    }
    fCO2_YYMM {
        Float64 _FillValue -99999.0;
        String description "Modeled time-variant fCO2";
        String units "uatm";
    }
    fCO2alpha_MM {
        Float64 _FillValue -99999.0;
        String description "Modeled fCO2 (year 2000, no lat and lon)";
        String units "uatm";
    }
    gvCO2_YYMM {
        Float64 _FillValue -99999.0;
        String description "Global View air CO2 (pCO2)";
        String units "ppm";
        String source_URL "http://www.esrl.noaa.gov/gmd/ccgg/globalview/co2/co2_intro.html";
    }
    SST_YYMM {
        Float64 _FillValue -99999.0;
        String description "Sea surface temperature (NOAA)";
        String units "C";
        String source_URL "http://www.esrl.noaa.gov/psd/data/gridded/data.noaa.oisst.v2.html";
    }
    SST_MM {
        Float64 _FillValue -99999.0;
        String description "Sea surface temperature climatology (NOAA)";
        String units "C";
    }
    SSS_MM {
        Float64 _FillValue -99999.0;
        String description "Sea surface salinity climatology (WOA09)";
        String source_URL "http://www.nodc.noaa.gov/OC5/WOA09/netcdf_data.html";
    }
    CHL_MM {
        Float64 _FillValue -99999.0;
        String description "Chlorophyll concenration climatology (Aqua+Terra MODIS, log10(1+CHL))";
        String units "mg m-3";
        String source_URL "http://oceancolor.gsfc.nasa.gov/cgi/l3";
    }
    WND_YYMM {
        Float64 _FillValue -99999.0;
        String units "m s-1";
        String description "Monthly ccmp wind speed";
        String source_URL "http://podaac.jpl.nasa.gov/dataset/CCMP_MEASURES_ATLAS_L3_OW_L2_5_SSMI_F14_WIND_VECTORS_FLK";
    }
    Ps_MM {
        Float64 _FillValue -99999.0;
        String description "MSL pressure (ECMWF Interim)";
        String units "atm";
        String source_URL "http://apps.ecmwf.int/datasets/data/interim_full_moda/";
    }
    Flux_YYMM {
        Float64 _FillValue -99999.0;
        Float64 scale_factor 2629800.0;
        String description "CO2 flux";
        String units "mole m-2 s-1";
    }
    Ice_MM {
        Float64 _FillValue -99999.0;
        String description "Ice cover (ECMWF Interim)";
        String units "%";
        String source_URL "http://apps.ecmwf.int/datasets/data/interim_full_moda/";
    }
    Elevation {
        Float64 _FillValue -2.147483648E9;
        String description "Eelvation";
        String units "m";
        String source_URL "http://www.ngdc.noaa.gov/mgg/global/global.html";
    }
    Area {
        Float64 _FillValue -99999.0;
        String description "Grid area";
        String units "km2";
    }
    Flux_YY {
        Float64 _FillValue -99999.0;
        String description "CO2 flux";
        String units "Pg yr-1";
    }
    Snow_MM {
        Float64 _FillValue -99999.0;
        String description "Snow depth (ECMWF Interim)";
        String units "m";
        String source_URL "http://apps.ecmwf.int/datasets/data/interim_full_moda/";
    }
    fCO2_2000 {
        Float64 _FillValue -99999.0;
        String description "CO2 climatology map with 2000 as the reference year (FNN)";
        String units "uatm";
    }
    NC_GLOBAL {
        String reference "Zeng et al. 2014. A Global Surface Ocean fCO2 Climatology Based on a Feed-Forward Neural Network. DOI: 10.1175/JTECH-D-13-00137.1";
        String contact "Jiye Zeng <zeng@nies.go.jp>";
        String comment "A new method based on the reference was used to produce this dataset. Once the method is published, the reference will be updated.";
    }
}