{
    "Header": {
        "data_specs_version": "01.00.33", 
        "cmor_version": "3.5", 
        "table_id": "Table SImon", 
        "realm": "seaIce", 
        "table_date": "18 November 2020", 
        "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": {
        "sfdsi": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "downward_sea_ice_basal_salt_flux", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Downward Sea Ice Basal Salt Flux", 
            "comment": "This field is physical, and it arises since sea ice has a nonzero salt content, so it exchanges salt with the liquid ocean upon melting and freezing.", 
            "dimensions": "longitude latitude time", 
            "out_name": "sfdsi", 
            "type": "real", 
            "positive": "down", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siage": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "age_of_sea_ice", 
            "units": "s", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Age of Sea Ice", 
            "comment": "Age of sea ice", 
            "dimensions": "longitude latitude time", 
            "out_name": "siage", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siareaacrossline": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_area_transport_across_line", 
            "units": "m2 s-1", 
            "cell_methods": "time: mean", 
            "cell_measures": "", 
            "long_name": "Sea-Ice Area Flux Through Straits", 
            "comment": "net (sum of transport in all directions) sea ice area transport through the following four passages, positive into the Arctic Ocean 1. Fram Strait = (11.5W,81.3N to (10.5E,79.6N) 2. Canadian Archipelago = (128.2W,70.6N) to (59.3W,82.1N) 3. Barents opening = (16.8E,76.5N) to (19.2E,70.2N) 4. Bering Strait = (171W,66.2N) to (166W,65N)", 
            "dimensions": "siline time", 
            "out_name": "siareaacrossline", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siarean": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_area", 
            "units": "1e6 km2", 
            "cell_methods": "area: time: mean", 
            "cell_measures": "", 
            "long_name": "Sea-Ice Area North", 
            "comment": "total area of sea ice in the Northern hemisphere", 
            "dimensions": "time", 
            "out_name": "siarean", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siareas": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_area", 
            "units": "1e6 km2", 
            "cell_methods": "area: time: mean", 
            "cell_measures": "", 
            "long_name": "Sea-Ice Area South", 
            "comment": "total area of sea ice in the Southern hemisphere", 
            "dimensions": "time", 
            "out_name": "siareas", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sicompstren": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "compressive_strength_of_sea_ice", 
            "units": "N m-1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Compressive Sea Ice Strength", 
            "comment": "Computed strength of the ice pack, defined as the energy (J m-2) dissipated per unit area removed from the ice pack under compression, and assumed proportional to the change in potential energy caused by ridging. For Hibler-type models, this is P (= P*h exp(-C(1-A)) where P* is compressive strength, h ice thickness, A compactness and C strength reduction constant).", 
            "dimensions": "longitude latitude time", 
            "out_name": "sicompstren", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siconc": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_area_fraction", 
            "units": "%", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Area Percentage (Ocean Grid)", 
            "comment": "Percentage of grid cell covered by sea ice", 
            "dimensions": "longitude latitude time typesi", 
            "out_name": "siconc", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siconca": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_area_fraction", 
            "units": "%", 
            "cell_methods": "area: time: mean", 
            "cell_measures": "area: areacella", 
            "long_name": "Sea-Ice Area Percentage (Atmospheric Grid)", 
            "comment": "Percentage of grid cell covered by sea ice", 
            "dimensions": "longitude latitude time typesi", 
            "out_name": "siconca", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidconcdyn": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "tendency_of_sea_ice_area_fraction_due_to_dynamics", 
            "units": "s-1", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Area Percentage Tendency Due to Dynamics", 
            "comment": "Total change in sea-ice area fraction through dynamics-related processes (advection, divergence...)", 
            "dimensions": "longitude latitude time", 
            "out_name": "sidconcdyn", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidconcth": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "tendency_of_sea_ice_area_fraction_due_to_thermodynamics", 
            "units": "s-1", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Area Percentage Tendency Due to Thermodynamics", 
            "comment": "Total change in sea-ice area fraction through thermodynamic processes", 
            "dimensions": "longitude latitude time", 
            "out_name": "sidconcth", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidivvel": {
            "frequency": "monPt", 
            "modeling_realm": "seaIce", 
            "standard_name": "divergence_of_sea_ice_velocity", 
            "units": "s-1", 
            "cell_methods": "area: mean where sea_ice (comment: mask=siconc) time: point", 
            "cell_measures": "area: areacello", 
            "long_name": "Divergence of the Sea-Ice Velocity Field", 
            "comment": "Divergence of sea-ice velocity field (first shear strain invariant)", 
            "dimensions": "longitude latitude time1", 
            "out_name": "sidivvel", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidmassdyn": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "tendency_of_sea_ice_amount_due_to_sea_ice_dynamics", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Mass Change from Dynamics", 
            "comment": "Total change in sea-ice mass through dynamics-related processes (advection,...) divided by grid-cell area", 
            "dimensions": "longitude latitude time", 
            "out_name": "sidmassdyn", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidmassevapsubl": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "water_evapotranspiration_flux", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Mass Change Through Evaporation and Sublimation", 
            "comment": "The rate of change of sea-ice mass change through evaporation and sublimation divided by grid-cell area", 
            "dimensions": "longitude latitude time", 
            "out_name": "sidmassevapsubl", 
            "type": "real", 
            "positive": "up", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidmassgrowthbot": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "tendency_of_sea_ice_amount_due_to_congelation_ice_accumulation", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Mass Change Through Basal Growth", 
            "comment": "The rate of change of sea ice mass due to vertical growth of existing sea ice at its base divided by grid-cell area.", 
            "dimensions": "longitude latitude time", 
            "out_name": "sidmassgrowthbot", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidmassgrowthwat": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "tendency_of_sea_ice_amount_due_to_frazil_ice_accumulation_in_leads", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Mass Change Through Growth in Supercooled Open Water (Frazil)", 
            "comment": "The rate of change of sea ice mass due to sea ice formation in supercooled water (often through frazil formation) divided by grid-cell area. Together, sidmassgrowthwat and sidmassgrowthbot should give total ice growth", 
            "dimensions": "longitude latitude time", 
            "out_name": "sidmassgrowthwat", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidmasslat": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "tendency_of_sea_ice_amount_due_to_lateral_melting", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Lateral Sea Ice Melt Rate", 
            "comment": "The rate of change of sea ice mass through lateral melting divided by grid-cell area (report 0 if not explicitly calculated thermodynamically)", 
            "dimensions": "longitude latitude time", 
            "out_name": "sidmasslat", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidmassmeltbot": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "tendency_of_sea_ice_amount_due_to_basal_melting", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Mass Change Through Bottom Melting", 
            "comment": "The rate of change of sea ice mass through melting at the ice bottom divided by grid-cell area", 
            "dimensions": "longitude latitude time", 
            "out_name": "sidmassmeltbot", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidmassmelttop": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "tendency_of_sea_ice_amount_due_to_surface_melting", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Mass Change Through Surface Melting", 
            "comment": "The rate of change of sea ice mass through melting at the ice surface divided by grid-cell area", 
            "dimensions": "longitude latitude time", 
            "out_name": "sidmassmelttop", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidmasssi": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "tendency_of_sea_ice_amount_due_to_conversion_of_snow_to_sea_ice", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Mass Change Through Snow-to-Ice Conversion", 
            "comment": "The rate of change of sea ice mass due to transformation of snow to sea ice divided by grid-cell area", 
            "dimensions": "longitude latitude time", 
            "out_name": "sidmasssi", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidmassth": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "tendency_of_sea_ice_amount_due_to_sea_ice_thermodynamics", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Mass Change from Thermodynamics", 
            "comment": "Total change in sea-ice mass from thermodynamic processes divided by grid-cell area", 
            "dimensions": "longitude latitude time", 
            "out_name": "sidmassth", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidmasstranx": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_x_transport", 
            "units": "kg s-1", 
            "cell_methods": "time: mean", 
            "cell_measures": "--MODEL", 
            "long_name": "X-Component of Sea-Ice Mass Transport", 
            "comment": "Includes transport of both sea ice and snow by advection", 
            "dimensions": "longitude latitude time", 
            "out_name": "sidmasstranx", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidmasstrany": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_y_transport", 
            "units": "kg s-1", 
            "cell_methods": "time: mean", 
            "cell_measures": "--MODEL", 
            "long_name": "Y-Component of Sea-Ice Mass Transport", 
            "comment": "Includes transport of both sea ice and snow by advection", 
            "dimensions": "longitude latitude time", 
            "out_name": "sidmasstrany", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidragbot": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_basal_drag_coefficient_for_momentum_in_sea_water", 
            "units": "1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Ocean Drag Coefficient", 
            "comment": "Oceanic drag coefficient that is used to calculate the oceanic momentum drag on sea ice", 
            "dimensions": "longitude latitude time", 
            "out_name": "sidragbot", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sidragtop": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "surface_drag_coefficient_for_momentum_in_air", 
            "units": "1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Atmospheric Drag Coefficient", 
            "comment": "Atmospheric drag coefficient that is used to calculate the atmospheric momentum drag on sea ice", 
            "dimensions": "longitude latitude time", 
            "out_name": "sidragtop", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siextentn": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_extent", 
            "units": "1e6 km2", 
            "cell_methods": "area: time: mean", 
            "cell_measures": "", 
            "long_name": "Sea-Ice Extent North", 
            "comment": "Total area of all Northern-Hemisphere grid cells that are covered by at least 15 % areal fraction of sea ice", 
            "dimensions": "time", 
            "out_name": "siextentn", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siextents": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_extent", 
            "units": "1e6 km2", 
            "cell_methods": "area: time: mean", 
            "cell_measures": "", 
            "long_name": "Sea-Ice Extent South", 
            "comment": "Total area of all Southern-Hemisphere grid cells that are covered by at least 15 % areal fraction of sea ice", 
            "dimensions": "time", 
            "out_name": "siextents", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sifb": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_freeboard", 
            "units": "m", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Freeboard", 
            "comment": "Mean height of sea-ice surface (=snow-ice interface when snow covered) above sea level", 
            "dimensions": "longitude latitude time", 
            "out_name": "sifb", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siflcondbot": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "basal_downward_heat_flux_in_sea_ice", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Net Conductive Heat Fluxes in Ice at the Bottom", 
            "comment": "the net heat conduction flux at the ice base", 
            "dimensions": "longitude latitude time", 
            "out_name": "siflcondbot", 
            "type": "real", 
            "positive": "down", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siflcondtop": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "surface_downward_sensible_heat_flux", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Net Conductive Heat Flux in Ice at the Surface", 
            "comment": "the net heat conduction flux at the ice surface", 
            "dimensions": "longitude latitude time", 
            "out_name": "siflcondtop", 
            "type": "real", 
            "positive": "down", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siflfwbot": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "water_flux_into_sea_water_due_to_sea_ice_thermodynamics", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Freshwater Flux from Sea Ice", 
            "comment": "Total flux of fresh water from water into sea ice divided by grid-cell area; This flux is negative during ice growth (liquid water mass decreases, hence upward flux of freshwater), positive during ice melt (liquid water mass increases, hence downward flux of freshwater)", 
            "dimensions": "longitude latitude time", 
            "out_name": "siflfwbot", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siflfwdrain": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "water_flux_into_sea_water_due_to_surface_drainage", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Freshwater Flux from Sea-Ice Surface", 
            "comment": "Total flux of fresh water from sea-ice surface into underlying ocean. This combines both surface melt water that drains directly into the ocean and the drainage of surface melt pond. By definition, this flux is always positive.", 
            "dimensions": "longitude latitude time", 
            "out_name": "siflfwdrain", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sifllatstop": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "surface_upward_latent_heat_flux", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconca)", 
            "cell_measures": "area: areacella", 
            "long_name": "Net Latent Heat Flux over Sea Ice", 
            "comment": "the net latent heat flux over sea ice", 
            "dimensions": "longitude latitude time", 
            "out_name": "sifllatstop", 
            "type": "real", 
            "positive": "up", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sifllwdtop": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "surface_downwelling_longwave_flux_in_air", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconca)", 
            "cell_measures": "area: areacella", 
            "long_name": "Downwelling Longwave Flux over Sea Ice", 
            "comment": "the downwelling longwave flux over sea ice (always positive)", 
            "dimensions": "longitude latitude time", 
            "out_name": "sifllwdtop", 
            "type": "real", 
            "positive": "down", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sifllwutop": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "surface_upwelling_longwave_flux_in_air", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconca)", 
            "cell_measures": "area: areacella", 
            "long_name": "Upwelling Longwave Flux over Sea Ice", 
            "comment": "the upwelling longwave flux over sea ice (always negative)", 
            "dimensions": "longitude latitude time", 
            "out_name": "sifllwutop", 
            "type": "real", 
            "positive": "up", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siflsenstop": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "surface_upward_sensible_heat_flux", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconca)", 
            "cell_measures": "area: areacella", 
            "long_name": "Net Upward Sensible Heat Flux over Sea Ice", 
            "comment": "the net sensible heat flux over sea ice", 
            "dimensions": "longitude latitude time", 
            "out_name": "siflsenstop", 
            "type": "real", 
            "positive": "up", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siflsensupbot": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "upward_sea_ice_basal_heat_flux", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Net Upward Sensible Heat Flux Under Sea Ice", 
            "comment": "the net sensible heat flux under sea ice from the ocean", 
            "dimensions": "longitude latitude time", 
            "out_name": "siflsensupbot", 
            "type": "real", 
            "positive": "up", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siflswdbot": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "downwelling_shortwave_flux_in_sea_water_at_sea_ice_base", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Downwelling Shortwave Flux Under Sea Ice", 
            "comment": "The downwelling shortwave flux underneath sea ice (always positive)", 
            "dimensions": "longitude latitude time", 
            "out_name": "siflswdbot", 
            "type": "real", 
            "positive": "down", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siflswdtop": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "surface_downwelling_shortwave_flux_in_air", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconca)", 
            "cell_measures": "area: areacella", 
            "long_name": "Downwelling Shortwave Flux over Sea Ice", 
            "comment": "The downwelling shortwave flux over sea ice (always positive by sign convention)", 
            "dimensions": "longitude latitude time", 
            "out_name": "siflswdtop", 
            "type": "real", 
            "positive": "down", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siflswutop": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "surface_upwelling_shortwave_flux_in_air", 
            "units": "W m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconca)", 
            "cell_measures": "area: areacella", 
            "long_name": "Upwelling Shortwave Flux over Sea Ice", 
            "comment": "The upwelling shortwave flux over sea ice (always negative)", 
            "dimensions": "longitude latitude time", 
            "out_name": "siflswutop", 
            "type": "real", 
            "positive": "up", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siforcecoriolx": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_x_force_per_unit_area_due_to_coriolis_effect", 
            "units": "N m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "--MODEL", 
            "long_name": "Coriolis Force Term in Force Balance (X-Component)", 
            "comment": "X-component of force on sea ice caused by coriolis force", 
            "dimensions": "longitude latitude time", 
            "out_name": "siforcecoriolx", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siforcecorioly": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_y_force_per_unit_area_due_to_coriolis_effect", 
            "units": "N m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "--MODEL", 
            "long_name": "Coriolis Force Term in Force Balance (Y-Component)", 
            "comment": "Y-component of force on sea ice caused by coriolis force", 
            "dimensions": "longitude latitude time", 
            "out_name": "siforcecorioly", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siforceintstrx": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_x_internal_stress", 
            "units": "N m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "--MODEL", 
            "long_name": "Internal Stress Term in Force Balance (X-Component)", 
            "comment": "X-component of force on sea ice caused by internal stress (divergence of sigma)", 
            "dimensions": "longitude latitude time", 
            "out_name": "siforceintstrx", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siforceintstry": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_y_internal_stress", 
            "units": "N m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "--MODEL", 
            "long_name": "Internal Stress Term in Force Balance (Y-Component)", 
            "comment": "Y-component of force on sea ice caused by internal stress (divergence of sigma)", 
            "dimensions": "longitude latitude time", 
            "out_name": "siforceintstry", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siforcetiltx": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_x_force_per_unit_area_due_to_sea_surface_tilt", 
            "units": "N m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "--MODEL", 
            "long_name": "Sea-Surface Tilt Term in Force Balance (X-Component)", 
            "comment": "X-component of force on sea ice caused by sea-surface tilt", 
            "dimensions": "longitude latitude time", 
            "out_name": "siforcetiltx", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siforcetilty": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_y_force_per_unit_area_due_to_sea_surface_tilt", 
            "units": "N m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "--MODEL", 
            "long_name": "Sea-Surface Tilt Term in Force Balance (Y-Component)", 
            "comment": "Y-component of force on sea ice caused by sea-surface tilt", 
            "dimensions": "longitude latitude time", 
            "out_name": "siforcetilty", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sihc": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_temperature_expressed_as_heat_content", 
            "units": "J m-2", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Heat Content per Unit Area", 
            "comment": "Heat content of all ice in grid cell divided by total grid-cell area. Water at 0 Celsius is assumed to have a heat content of 0 J.  Does not include heat content of snow, but does include heat content of brine. Heat content is always negative, since both the sensible and the latent heat content of ice are less than that of water", 
            "dimensions": "longitude latitude time", 
            "out_name": "sihc", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siitdconc": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_area_fraction", 
            "units": "%", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Area Percentages in Thickness Categories", 
            "comment": "Percentage of grid cell covered by each ice-thickness category (vector with one entry for each thickness category starting from the thinnest category, netcdf file should use thickness bounds of the categories as third coordinate axis)", 
            "dimensions": "longitude latitude iceband time", 
            "out_name": "siitdconc", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siitdsnconc": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "surface_snow_area_fraction", 
            "units": "%", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siitdconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Snow Area Percentages in Ice Thickness Categories", 
            "comment": "Percentage of grid cell covered by snow in each ice-thickness category (vector with one entry for each thickness category starting from the thinnest category, netcdf file should use thickness bounds of the categories as third coordinate axis)", 
            "dimensions": "longitude latitude iceband time", 
            "out_name": "siitdsnconc", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siitdsnthick": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "surface_snow_thickness", 
            "units": "m", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siitdconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Snow Thickness in Ice Thickness Categories", 
            "comment": "Actual thickness of snow in each  category (NOT volume divided by grid area),  (vector with one entry for each thickness category starting from the thinnest category, netcdf file should use thickness bounds of categories as third coordinate axis)", 
            "dimensions": "longitude latitude iceband time", 
            "out_name": "siitdsnthick", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siitdthick": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_thickness", 
            "units": "m", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siitdconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Thickness in Thickness Categories", 
            "comment": "Actual (floe) thickness of sea ice in each  category (NOT volume divided by grid area),  (vector with one entry for each thickness category starting from the thinnest category, netcdf file should use thickness bounds of categories as third coordinate axis)", 
            "dimensions": "longitude latitude iceband time", 
            "out_name": "siitdthick", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "simass": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_amount", 
            "units": "kg m-2", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Mass per Area", 
            "comment": "Total mass of sea ice divided by grid-cell area", 
            "dimensions": "longitude latitude time", 
            "out_name": "simass", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "simassacrossline": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_transport_across_line", 
            "units": "kg s-1", 
            "cell_methods": "time: mean", 
            "cell_measures": "", 
            "long_name": "Sea Mass Area Flux Through Straits", 
            "comment": "net (sum of transport in all directions) sea ice area transport through the following four passages, positive into the Arctic Ocean 1. Fram Strait = (11.5W,81.3N to (10.5E,79.6N) 2. Canadian Archipelago = (128.2W,70.6N) to (59.3W,82.1N) 3. Barents opening = (16.8E,76.5N) to (19.2E,70.2N) 4. Bering Strait = (171W,66.2N) to (166W,65N)", 
            "dimensions": "siline time", 
            "out_name": "simassacrossline", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "simpconc": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "area_fraction", 
            "units": "%", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Percentage Cover of Sea Ice by Meltpond", 
            "comment": "Percentage of sea ice, by area, which is covered by melt ponds, giving equal weight to every square metre of sea ice .", 
            "dimensions": "longitude latitude time typemp", 
            "out_name": "simpconc", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "simpmass": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_melt_pond_thickness", 
            "units": "m", 
            "cell_methods": "area: time: mean where sea_ice_melt_pond (comment: mask=simpconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Meltpond Mass per Unit Area (as Depth)", 
            "comment": "Meltpond Depth", 
            "dimensions": "longitude latitude time", 
            "out_name": "simpmass", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "simprefrozen": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "thickness_of_ice_on_sea_ice_melt_pond", 
            "units": "m", 
            "cell_methods": "area: time: mean where sea_ice_melt_pond (comment: mask=simpconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Thickness of Refrozen Ice on Melt Pond", 
            "comment": "Volume of refrozen ice on melt ponds divided by meltpond covered area", 
            "dimensions": "longitude latitude time", 
            "out_name": "simprefrozen", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sipr": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "rainfall_flux", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Rainfall Rate over Sea Ice", 
            "comment": "mass of liquid precipitation falling onto sea ice divided by grid-cell area", 
            "dimensions": "longitude latitude time", 
            "out_name": "sipr", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sirdgconc": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "area_fraction", 
            "units": "1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Percentage Cover of Sea Ice by Ridging", 
            "comment": "Fraction of sea ice, by area, which is covered by sea ice ridges, giving equal weight to every square metre of sea ice .", 
            "dimensions": "longitude latitude time typesirdg", 
            "out_name": "sirdgconc", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sirdgthick": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_thickness", 
            "units": "m", 
            "cell_methods": "area: time: mean where sea_ice_ridges (comment: mask=sirdgconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Ridged Ice Thickness", 
            "comment": "Sea Ice Ridge Height (representing mean height over the ridged area)", 
            "dimensions": "longitude latitude time", 
            "out_name": "sirdgthick", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sisali": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_salinity", 
            "units": "0.001", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea Ice Salinity", 
            "comment": "Mean sea-ice salinity of all sea ice in grid cell", 
            "dimensions": "longitude latitude time", 
            "out_name": "sisali", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sisaltmass": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_mass_content_of_salt", 
            "units": "kg m-2", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Mass of Salt in Sea Ice per Area", 
            "comment": "Total mass of all salt in sea ice divided by grid-cell area", 
            "dimensions": "longitude latitude time", 
            "out_name": "sisaltmass", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sishevel": {
            "frequency": "monPt", 
            "modeling_realm": "seaIce", 
            "standard_name": "maximum_over_coordinate_rotation_of_sea_ice_horizontal_shear_strain_rate", 
            "units": "s-1", 
            "cell_methods": "area: mean where sea_ice (comment: mask=siconc) time: point", 
            "cell_measures": "area: areacello", 
            "long_name": "Maximum Shear of Sea-Ice Velocity Field", 
            "comment": "Maximum shear of sea-ice velocity field (second shear strain invariant)", 
            "dimensions": "longitude latitude time1", 
            "out_name": "sishevel", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sisnconc": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "surface_snow_area_fraction", 
            "units": "%", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Snow Area Percentage", 
            "comment": "Percentage of sea ice, by area, which is covered by snow, giving equal weight to every square metre of sea ice . Exclude snow that lies on land or land ice.", 
            "dimensions": "longitude latitude time", 
            "out_name": "sisnconc", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sisnhc": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "thermal_energy_content_of_surface_snow", 
            "units": "J m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Snow Heat Content per Unit Area", 
            "comment": "Heat-content of all snow in grid cell divided by total grid-cell area. Snow-water equivalent at 0 Celsius is assumed to have a heat content of 0 J.  Does not include heat content of sea ice.", 
            "dimensions": "longitude latitude time", 
            "out_name": "sisnhc", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sisnmass": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "liquid_water_content_of_surface_snow", 
            "units": "kg m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Snow Mass per Area", 
            "comment": "Total mass of snow on sea ice divided by sea-ice area.", 
            "dimensions": "longitude latitude time", 
            "out_name": "sisnmass", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sisnthick": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "surface_snow_thickness", 
            "units": "m", 
            "cell_methods": "area: mean where snow over sea_ice area: time: mean where sea_ice", 
            "cell_measures": "area: areacello", 
            "long_name": "Snow Thickness", 
            "comment": "Actual thickness of snow (snow volume divided by snow-covered area)", 
            "dimensions": "longitude latitude time", 
            "out_name": "sisnthick", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sispeed": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_speed", 
            "units": "m s-1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Speed", 
            "comment": "Speed of ice (i.e. mean absolute velocity) to account for back-and-forth movement of the ice", 
            "dimensions": "longitude latitude time", 
            "out_name": "sispeed", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sistremax": {
            "frequency": "monPt", 
            "modeling_realm": "seaIce", 
            "standard_name": "maximum_over_coordinate_rotation_of_sea_ice_horizontal_shear_stress", 
            "units": "N m-1", 
            "cell_methods": "area: mean where sea_ice (comment: mask=siconc) time: point", 
            "cell_measures": "area: areacello", 
            "long_name": "Maximum Shear Stress in Sea Ice", 
            "comment": "Maximum shear stress in sea ice (second stress invariant)", 
            "dimensions": "longitude latitude time1", 
            "out_name": "sistremax", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sistresave": {
            "frequency": "monPt", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_average_normal_horizontal_stress", 
            "units": "N m-1", 
            "cell_methods": "area: mean where sea_ice (comment: mask=siconc) time: point", 
            "cell_measures": "area: areacello", 
            "long_name": "Average Normal Stress in Sea Ice", 
            "comment": "Average normal stress in sea ice (first stress invariant)", 
            "dimensions": "longitude latitude time1", 
            "out_name": "sistresave", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sistrxdtop": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "surface_downward_x_stress", 
            "units": "N m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "--MODEL", 
            "long_name": "X-Component of Atmospheric Stress on Sea Ice", 
            "comment": "X-component of atmospheric stress on sea ice", 
            "dimensions": "longitude latitude time", 
            "out_name": "sistrxdtop", 
            "type": "real", 
            "positive": "down", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sistrxubot": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "upward_x_stress_at_sea_ice_base", 
            "units": "N m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "X-Component of Ocean Stress on Sea Ice", 
            "comment": "X-component of ocean stress on sea ice", 
            "dimensions": "longitude latitude time", 
            "out_name": "sistrxubot", 
            "type": "real", 
            "positive": "up", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sistrydtop": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "surface_downward_y_stress", 
            "units": "N m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "--MODEL", 
            "long_name": "Y-Component of Atmospheric Stress on Sea Ice", 
            "comment": "Y-component of atmospheric stress on sea ice", 
            "dimensions": "longitude latitude time", 
            "out_name": "sistrydtop", 
            "type": "real", 
            "positive": "down", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sistryubot": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "upward_y_stress_at_sea_ice_base", 
            "units": "N m-2", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Y-Component of Ocean Stress on Sea Ice", 
            "comment": "Y-component of ocean stress on sea ice", 
            "dimensions": "longitude latitude time", 
            "out_name": "sistryubot", 
            "type": "real", 
            "positive": "up", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sitempbot": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_basal_temperature", 
            "units": "K", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Temperature at Ice-Ocean Interface", 
            "comment": "Report temperature at interface, NOT temperature within lowermost model layer", 
            "dimensions": "longitude latitude time", 
            "out_name": "sitempbot", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sitempsnic": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_surface_temperature", 
            "units": "K", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Temperature at Snow-Ice Interface", 
            "comment": "Report surface temperature of ice where snow thickness is zero", 
            "dimensions": "longitude latitude time", 
            "out_name": "sitempsnic", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sitemptop": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_surface_temperature", 
            "units": "K", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Surface Temperature of Sea Ice", 
            "comment": "Report surface temperature of snow where snow covers the sea ice.", 
            "dimensions": "longitude latitude time", 
            "out_name": "sitemptop", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sithick": {
            "frequency": "mon", 
            "modeling_realm": "seaIce ocean", 
            "standard_name": "sea_ice_thickness", 
            "units": "m", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea Ice Thickness", 
            "comment": "Actual (floe) thickness of sea ice (NOT volume divided by grid area as was done in CMIP5)", 
            "dimensions": "longitude latitude time", 
            "out_name": "sithick", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sitimefrac": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "fraction_of_time_with_sea_ice_area_fraction_above_threshold", 
            "units": "1", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Fraction of Time Steps with Sea Ice", 
            "comment": "Fraction of time steps of the averaging period during which sea ice is present (siconc >0 ) in a grid cell", 
            "dimensions": "longitude latitude time", 
            "out_name": "sitimefrac", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siu": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_x_velocity", 
            "units": "m s-1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "--MODEL", 
            "long_name": "X-Component of Sea-Ice Velocity", 
            "comment": "The x-velocity of ice on native model grid", 
            "dimensions": "longitude latitude time", 
            "out_name": "siu", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "siv": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_y_velocity", 
            "units": "m s-1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "--MODEL", 
            "long_name": "Y-Component of Sea-Ice Velocity", 
            "comment": "The y-velocity of ice on native model grid", 
            "dimensions": "longitude latitude time", 
            "out_name": "siv", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sivol": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_thickness", 
            "units": "m", 
            "cell_methods": "area: mean where sea time: mean", 
            "cell_measures": "area: areacello", 
            "long_name": "Sea-Ice Volume per Area", 
            "comment": "Total volume of sea ice divided by grid-cell area (this used to be called ice thickness in CMIP5)", 
            "dimensions": "longitude latitude time", 
            "out_name": "sivol", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sivoln": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_volume", 
            "units": "1e3 km3", 
            "cell_methods": "area: time: mean", 
            "cell_measures": "", 
            "long_name": "Sea-Ice Volume North", 
            "comment": "total volume of sea ice in the Northern hemisphere", 
            "dimensions": "time", 
            "out_name": "sivoln", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sivols": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "sea_ice_volume", 
            "units": "1e3 km3", 
            "cell_methods": "area: time: mean", 
            "cell_measures": "", 
            "long_name": "Sea-Ice Volume South", 
            "comment": "total volume of sea ice in the Southern hemisphere", 
            "dimensions": "time", 
            "out_name": "sivols", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sndmassdyn": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "tendency_of_surface_snow_amount_due_to_sea_ice_dynamics", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Snow Mass Rate of Change Through Advection by Sea-Ice Dynamics", 
            "comment": "The rate of change of snow mass through advection with sea ice divided by sea-ice area", 
            "dimensions": "longitude latitude time", 
            "out_name": "sndmassdyn", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sndmassmelt": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "surface_snow_melt_flux", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Snow Mass Rate of Change Through Melt", 
            "comment": "the rate of change of snow mass through melt divided by sea-ice area", 
            "dimensions": "longitude latitude time", 
            "out_name": "sndmassmelt", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sndmasssi": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "tendency_of_surface_snow_amount_due_to_conversion_of_snow_to_sea_ice", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Snow Mass Rate of Change Through Snow-to-Ice Conversion", 
            "comment": "the rate of change of snow mass due to transformation of snow to sea ice divided by sea-ice area", 
            "dimensions": "longitude latitude time", 
            "out_name": "sndmasssi", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sndmasssnf": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "snowfall_flux", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Snow Mass Change Through Snow Fall", 
            "comment": "mass of solid precipitation falling onto sea ice divided by sea-ice area", 
            "dimensions": "longitude latitude time", 
            "out_name": "sndmasssnf", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sndmasssubl": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "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 sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Snow Mass Rate of Change Through Evaporation or Sublimation", 
            "comment": "the rate of change of snow mass through sublimation and evaporation divided by sea-ice area", 
            "dimensions": "longitude latitude time", 
            "out_name": "sndmasssubl", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "sndmasswindrif": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "tendency_of_surface_snow_amount_due_to_drifting_into_sea", 
            "units": "kg m-2 s-1", 
            "cell_methods": "area: time: mean where sea_ice (comment: mask=siconc)", 
            "cell_measures": "area: areacello", 
            "long_name": "Snow Mass Rate of Change Through Wind Drift of Snow", 
            "comment": "the rate of change of snow mass through wind drift of snow (from sea-ice into the sea) divided by sea-ice area", 
            "dimensions": "longitude latitude time", 
            "out_name": "sndmasswindrif", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }, 
        "snmassacrossline": {
            "frequency": "mon", 
            "modeling_realm": "seaIce", 
            "standard_name": "snow_transport_across_line_due_to_sea_ice_dynamics", 
            "units": "kg s-1", 
            "cell_methods": "time: mean", 
            "cell_measures": "", 
            "long_name": "Snow Mass Flux Through Straits", 
            "comment": "net (sum of transport in all directions) sea ice area transport through the following four passages, positive into the Arctic Ocean 1. Fram Strait = (11.5W,81.3N to (10.5E,79.6N) 2. Canadian Archipelago = (128.2W,70.6N) to (59.3W,82.1N) 3. Barents opening = (16.8E,76.5N) to (19.2E,70.2N) 4. Bering Strait = (171W,66.2N) to (166W,65N)", 
            "dimensions": "siline time", 
            "out_name": "snmassacrossline", 
            "type": "real", 
            "positive": "", 
            "valid_min": "", 
            "valid_max": "", 
            "ok_min_mean_abs": "", 
            "ok_max_mean_abs": ""
        }
    }
}
