CMIP6_LImon.json

{
    "Header": {
        "data_specs_version": "01.00.31", 
        "cmor_version": "3.5", 
        "table_id": "Table LImon", 
        "realm": "landIce land", 
        "table_date": "24 July 2019", 
        "missing_value": "1e20", 
        "int_missing_value": "-999", 
        "product": "model-output", 
        "approx_interval": "30.00000", 
        "generic_levels": "", 
        "mip_era": "CMIP6", 
        "Conventions": "CF-1.7 CMIP-6.2"
    }, 
    "variable_entry": {
        "acabfIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "land_ice_surface_specific_mass_balance_flux", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Surface Mass Balance Flux", 
            "comment": "Specific mass balance means the net rate at which ice is added per unit area at the land ice surface. Computed as the total surface mass balance on the land ice portion of the grid cell divided by land ice area in the grid cell. A negative value means loss of ice", 
            "dimensions": "longitude latitude time", 
            "out_name": "acabfIs", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "agesno": {
            "frequency": "mon", 
            "modeling_realm": "landIce land", 
            "standard_name": "age_of_surface_snow", 
            "units": "day", 
            "cell_methods": "area: mean where land time: mean (with samples weighted by snow mass)", 
            "cell_measures": "area: areacella", 
            "long_name": "Mean Age of Snow", 
            "comment": "Age of Snow (when computing the time-mean here, the time samples, weighted by the mass of snow on the land portion of the grid cell, are accumulated and then divided by the sum of the weights.  Reported as missing data in regions free of snow on land.", 
            "dimensions": "longitude latitude time", 
            "out_name": "agesno", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "hfdsn": {
            "frequency": "mon", 
            "modeling_realm": "landIce land", 
            "standard_name": "surface_downward_heat_flux_in_snow", 
            "units": "W m-2", 
            "cell_methods": "area: mean where land time: mean", 
            "cell_measures": "area: areacella", 
            "long_name": "Downward Heat Flux into Snow Where Land over Land", 
            "comment": "the net downward heat flux from the atmosphere into the snow that lies on land divided by the land area in the grid cell; reported as 0.0 for snow-free land regions or where the land fraction is 0.", 
            "dimensions": "longitude latitude time", 
            "out_name": "hfdsn", 
            "type": "real", 
            "positive": "down", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "hflsIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "surface_upward_latent_heat_flux", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Surface Upward Latent Heat Flux", 
            "comment": "Upward latent heat flux from the ice sheet surface", 
            "dimensions": "longitude latitude time", 
            "out_name": "hflsIs", 
            "type": "real", 
            "positive": "up", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "hfssIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "surface_upward_sensible_heat_flux", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Surface Upward Sensible Heat Flux", 
            "comment": "Upward sensible heat flux from the ice sheet surface. The surface sensible heat flux, also called turbulent heat flux, is the exchange of heat between the surface and the air by motion of air.", 
            "dimensions": "longitude latitude time", 
            "out_name": "hfssIs", 
            "type": "real", 
            "positive": "up", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "icemIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "land_ice_surface_melt_flux", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Surface Ice Melt Flux", 
            "comment": "Loss of ice mass resulting from surface melting. Computed as the total surface melt water on the land ice portion of the grid cell divided by land ice area in the grid cell.", 
            "dimensions": "longitude latitude time", 
            "out_name": "icemIs", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "litemptopIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "temperature_at_top_of_ice_sheet_model", 
            "units": "K", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Temperature at Top of Ice Sheet Model", 
            "comment": "Upper boundary temperature that is used to force ice sheet models. It is the temperature at the base of the snowpack models, and does not vary with seasons. Report surface temperature of ice sheet where snow thickness is zero", 
            "dimensions": "longitude latitude time", 
            "out_name": "litemptopIs", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "lwsnl": {
            "frequency": "mon", 
            "modeling_realm": "landIce land", 
            "standard_name": "liquid_water_content_of_surface_snow", 
            "units": "kg m-2", 
            "cell_methods": "area: mean where land time: mean", 
            "cell_measures": "area: areacella", 
            "long_name": "Liquid Water Content of Snow Layer", 
            "comment": "The total mass of liquid water contained interstitially within the whole depth of the snow layer of the land portion of a grid cell divided by the area of the land portion of the cell.", 
            "dimensions": "longitude latitude time", 
            "out_name": "lwsnl", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "mrroIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "runoff_flux", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Total Runoff", 
            "comment": "The total run-off (including drainage through the base of the soil model) per unit area leaving the land portion of the grid cell.", 
            "dimensions": "longitude latitude time", 
            "out_name": "mrroIs", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "orogIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "surface_altitude", 
            "units": "m", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Surface Altitude", 
            "comment": "The surface called 'surface' means the lower boundary of the atmosphere. Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level.", 
            "dimensions": "longitude latitude time", 
            "out_name": "orogIs", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "pflw": {
            "frequency": "mon", 
            "modeling_realm": "landIce land", 
            "standard_name": "liquid_water_content_of_permafrost_layer", 
            "units": "kg m-2", 
            "cell_methods": "area: mean where land time: mean", 
            "cell_measures": "area: areacella", 
            "long_name": "Liquid Water Content of Permafrost Layer", 
            "comment": "*where land over land*, i.e., this is the total mass of liquid water contained within the permafrost layer within the land portion of a grid cell divided by the area of the land portion of the cell.", 
            "dimensions": "longitude latitude time", 
            "out_name": "pflw", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "prraIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "rainfall_flux", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Rainfall Rate", 
            "comment": "Rainfall rate over the ice sheet", 
            "dimensions": "longitude latitude time", 
            "out_name": "prraIs", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "prsnIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "snowfall_flux", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Snowfall Flux", 
            "comment": "at surface; includes precipitation of all forms of water in the solid phase", 
            "dimensions": "longitude latitude time", 
            "out_name": "prsnIs", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "rldsIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "surface_downwelling_longwave_flux_in_air", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Surface Downwelling Longwave Radiation", 
            "comment": "The surface called 'surface' means the lower boundary of the atmosphere. 'longwave' means longwave radiation. Downwelling radiation is radiation from above. It does not mean 'net downward'. When thought of as being incident on a surface, a radiative flux is sometimes called 'irradiance'. In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called 'vector irradiance'. In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics.", 
            "dimensions": "longitude latitude time", 
            "out_name": "rldsIs", 
            "type": "real", 
            "positive": "down", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "rlusIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "surface_upwelling_longwave_flux_in_air", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Surface Upwelling Longwave Radiation", 
            "comment": "The surface called 'surface' means the lower boundary of the atmosphere. 'longwave' means longwave radiation. Upwelling radiation is radiation from below. It does not mean 'net upward'. When thought of as being incident on a surface, a radiative flux is sometimes called 'irradiance'. In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called 'vector irradiance'. In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics.", 
            "dimensions": "longitude latitude time", 
            "out_name": "rlusIs", 
            "type": "real", 
            "positive": "up", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "rsdsIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "surface_downwelling_shortwave_flux_in_air", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Surface Downwelling Shortwave Radiation", 
            "comment": "Surface solar irradiance for UV calculations", 
            "dimensions": "longitude latitude time", 
            "out_name": "rsdsIs", 
            "type": "real", 
            "positive": "down", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "rsusIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "surface_upwelling_shortwave_flux_in_air", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Surface Upwelling Shortwave Radiation", 
            "comment": "The surface called 'surface' means the lower boundary of the atmosphere. 'shortwave' means shortwave radiation. Upwelling radiation is radiation from below. It does not mean 'net upward'. When thought of as being incident on a surface, a radiative flux is sometimes called 'irradiance'. In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called 'vector irradiance'. In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics.", 
            "dimensions": "longitude latitude time", 
            "out_name": "rsusIs", 
            "type": "real", 
            "positive": "up", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sbl": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "tendency_of_atmosphere_mass_content_of_water_vapor_due_to_sublimation_of_surface_snow_and_ice", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: mean where land time: mean", 
            "cell_measures": "area: areacella", 
            "long_name": "Surface Snow and Ice Sublimation Flux", 
            "comment": "The snow and ice sublimation flux is the loss of snow and ice mass per unit area from the surface resulting from their direct conversion to water vapor that enters the atmosphere.", 
            "dimensions": "longitude latitude time", 
            "out_name": "sbl", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sblIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "tendency_of_atmosphere_mass_content_of_water_vapor_due_to_sublimation_of_surface_snow_and_ice", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Surface Snow and Ice Sublimation Flux", 
            "comment": "The snow and ice sublimation flux is the loss of snow and ice mass per unit area from the surface resulting from their direct conversion to water vapor that enters the atmosphere.", 
            "dimensions": "longitude latitude time", 
            "out_name": "sblIs", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sftflf": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "floating_ice_shelf_area_fraction", 
            "units": "%", 
            "cell_methods": "area: time: mean", 
            "cell_measures": "area: areacella", 
            "long_name": "Floating Ice Shelf Area Percentage", 
            "comment": "Percentage of grid cell covered by floating ice shelf, the component of the ice sheet that is flowing over sea water", 
            "dimensions": "longitude latitude time", 
            "out_name": "sftflf", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sftgif": {
            "frequency": "mon", 
            "modeling_realm": "land", 
            "standard_name": "land_ice_area_fraction", 
            "units": "%", 
            "cell_methods": "area: time: mean", 
            "cell_measures": "area: areacella", 
            "long_name": "Land Ice Area Percentage", 
            "comment": "Percentage of grid cell covered by land ice (ice sheet, ice shelf, ice cap, glacier)", 
            "dimensions": "longitude latitude time", 
            "out_name": "sftgif", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sftgrf": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "grounded_ice_sheet_area_fraction", 
            "units": "%", 
            "cell_methods": "area: time: mean", 
            "cell_measures": "area: areacella", 
            "long_name": "Grounded Ice Sheet Area Percentage", 
            "comment": "Percentage of grid cell covered by grounded ice sheet", 
            "dimensions": "longitude latitude time", 
            "out_name": "sftgrf", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "snc": {
            "frequency": "mon", 
            "modeling_realm": "landIce land", 
            "standard_name": "surface_snow_area_fraction", 
            "units": "%", 
            "cell_methods": "area: time: mean", 
            "cell_measures": "area: areacella", 
            "long_name": "Snow Area Percentage", 
            "comment": "Percentage of each grid cell that is occupied by snow that rests on land portion of cell.", 
            "dimensions": "longitude latitude time", 
            "out_name": "snc", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sncIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "surface_snow_area_fraction", 
            "units": "%", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Snow Cover Percentage", 
            "comment": "Percentage of each grid cell that is occupied by snow that rests on land portion of cell.", 
            "dimensions": "longitude latitude time", 
            "out_name": "sncIs", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "snd": {
            "frequency": "mon", 
            "modeling_realm": "landIce land", 
            "standard_name": "surface_snow_thickness", 
            "units": "m", 
            "cell_methods": "area: mean where land time: mean", 
            "cell_measures": "area: areacella", 
            "long_name": "Snow Depth", 
            "comment": "where land over land, this is computed as the mean thickness of snow in the land portion of the grid cell (averaging over the entire land portion, including the snow-free fraction).  Reported as 0.0 where the land fraction is 0.", 
            "dimensions": "longitude latitude time", 
            "out_name": "snd", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "snicefreezIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "surface_snow_and_ice_refreezing_flux", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Surface Snow and Ice Refreeze Flux", 
            "comment": "Mass flux of surface meltwater which refreezes within the snowpack. Computed as the total refreezing on the land ice portion of the grid cell divided by land ice area in the grid cell.", 
            "dimensions": "longitude latitude time", 
            "out_name": "snicefreezIs", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "snicemIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "surface_snow_and_ice_melt_flux", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Surface Snow and Ice Melt Flux", 
            "comment": "Loss of snow and ice mass resulting from surface melting. Computed as the total surface melt on the land ice portion of the grid cell divided by land ice area in the grid cell.", 
            "dimensions": "longitude latitude time", 
            "out_name": "snicemIs", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "snm": {
            "frequency": "mon", 
            "modeling_realm": "landIce land", 
            "standard_name": "surface_snow_melt_flux", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: mean where land time: mean", 
            "cell_measures": "area: areacella", 
            "long_name": "Surface Snow Melt", 
            "comment": "The total surface snow melt rate on the land portion of the grid cell divided by the land area in the grid cell; report as zero for snow-free land regions and missing where there is no land.", 
            "dimensions": "longitude latitude time", 
            "out_name": "snm", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "snmIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "surface_snow_melt_flux", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Surface Snow Melt", 
            "comment": "The total surface snow melt rate on the land portion of the grid cell divided by the land area in the grid cell; report as zero for snow-free land regions and missing where there is no land.", 
            "dimensions": "longitude latitude time", 
            "out_name": "snmIs", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "snw": {
            "frequency": "mon", 
            "modeling_realm": "landIce land", 
            "standard_name": "surface_snow_amount", 
            "units": "kg m-2", 
            "cell_methods": "area: mean where land time: mean", 
            "cell_measures": "area: areacella", 
            "long_name": "Surface Snow Amount", 
            "comment": "The mass of surface snow on the land portion of the grid cell divided by the land area in the grid cell; reported as missing where the land fraction is 0; excludes snow on vegetation canopy or on sea ice.", 
            "dimensions": "longitude latitude time", 
            "out_name": "snw", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sootsn": {
            "frequency": "mon", 
            "modeling_realm": "landIce land", 
            "standard_name": "soot_content_of_surface_snow", 
            "units": "kg m-2", 
            "cell_methods": "area: mean where land time: mean", 
            "cell_measures": "area: areacella", 
            "long_name": "Snow Soot Content", 
            "comment": "the entire land portion of the grid cell is considered, with snow soot content set to 0.0 in regions free of snow.", 
            "dimensions": "longitude latitude time", 
            "out_name": "sootsn", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "tasIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "air_temperature", 
            "units": "K", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Near-Surface Air Temperature", 
            "comment": "near-surface (usually, 2 meter) air temperature", 
            "dimensions": "longitude latitude time", 
            "out_name": "tasIs", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "tpf": {
            "frequency": "mon", 
            "modeling_realm": "landIce land", 
            "standard_name": "permafrost_layer_thickness", 
            "units": "m", 
            "cell_methods": "area: mean where land time: mean", 
            "cell_measures": "area: areacella", 
            "long_name": "Permafrost Layer Thickness", 
            "comment": "The mean thickness of the permafrost layer in the land portion of the grid cell.  Reported as zero in permafrost-free regions.", 
            "dimensions": "longitude latitude time", 
            "out_name": "tpf", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "tsIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "surface_temperature", 
            "units": "K", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Surface Temperature", 
            "comment": "Temperature of the lower boundary of the atmosphere", 
            "dimensions": "longitude latitude time", 
            "out_name": "tsIs", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "tsn": {
            "frequency": "mon", 
            "modeling_realm": "landIce land", 
            "standard_name": "temperature_in_surface_snow", 
            "units": "K", 
            "cell_methods": "area: mean where land time: mean (with samples weighted by snow mass)", 
            "cell_measures": "area: areacella", 
            "long_name": "Snow Internal Temperature", 
            "comment": "This temperature is averaged over all the snow in the grid cell that rests on land or land ice.  When computing the time-mean here, the time samples, weighted by the mass of snow on the land portion of the grid cell, are accumulated and then divided by the sum of the weights.   Reported as missing in regions free of snow on land.", 
            "dimensions": "longitude latitude time", 
            "out_name": "tsn", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "tsnIs": {
            "frequency": "mon", 
            "modeling_realm": "landIce", 
            "standard_name": "temperature_in_surface_snow", 
            "units": "K", 
            "cell_methods": "area: time: mean where ice_sheet", 
            "cell_measures": "area: areacella", 
            "long_name": "Ice Sheet Snow Internal Temperature", 
            "comment": "This temperature is averaged over all the snow in the grid cell that rests on land or land ice.  When computing the time-mean here, the time samples, weighted by the mass of snow on the land portion of the grid cell, are accumulated and then divided by the sum of the weights.   Reported as missing in regions free of snow on land.", 
            "dimensions": "longitude latitude time", 
            "out_name": "tsnIs", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }
    }
}