{
    "Header":{
        "#dataRequest_specs_version":"01.00.29",
        "#mip_era":"CMIP6",
        "Conventions":"CF-1.7 ODS-2.1",
        "approx_interval":"30.00000",
        "cmor_version":"3.4",
        "data_specs_version":"2.1.0",
        "generic_levels":"",
        "int_missing_value":"-2147483648",
        "missing_value":"1e20",
        "product":"observations",
        "realm":"seaIce",
        "table_date":"11 April 2019",
        "table_id":"Table obs4MIPs_SImon"
    },
    "variable_entry":{
        "sfdsi":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "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",
            "frequency":"mon",
            "long_name":"Downward Sea Ice Basal Salt Flux",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sfdsi",
            "positive":"down",
            "standard_name":"downward_sea_ice_basal_salt_flux",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "siage":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Age of sea ice",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Age of Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siage",
            "positive":"",
            "standard_name":"age_of_sea_ice",
            "type":"real",
            "units":"s",
            "valid_max":"",
            "valid_min":""
        },
        "siareaacrossline":{
            "cell_measures":"",
            "cell_methods":"time: mean",
            "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",
            "frequency":"mon",
            "long_name":"Sea-Ice Area Flux Through Straits",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siareaacrossline",
            "positive":"",
            "standard_name":"sea_ice_area_transport_across_line",
            "type":"real",
            "units":"m2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "siarean":{
            "cell_measures":"",
            "cell_methods":"area: time: mean",
            "comment":"total area of sea ice in the Northern hemisphere",
            "dimensions":"time",
            "frequency":"mon",
            "long_name":"Sea-Ice Area North",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siarean",
            "positive":"",
            "standard_name":"sea_ice_area",
            "type":"real",
            "units":"1e6 km2",
            "valid_max":"",
            "valid_min":""
        },
        "siareas":{
            "cell_measures":"",
            "cell_methods":"area: time: mean",
            "comment":"total area of sea ice in the Southern hemisphere",
            "dimensions":"time",
            "frequency":"mon",
            "long_name":"Sea-Ice Area South",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siareas",
            "positive":"",
            "standard_name":"sea_ice_area",
            "type":"real",
            "units":"1e6 km2",
            "valid_max":"",
            "valid_min":""
        },
        "sicompstren":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "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",
            "frequency":"mon",
            "long_name":"Compressive Sea Ice Strength",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sicompstren",
            "positive":"",
            "standard_name":"compressive_strength_of_sea_ice",
            "type":"real",
            "units":"N m-1",
            "valid_max":"",
            "valid_min":""
        },
        "siconc":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "comment":"Area fraction of grid cell covered by sea ice",
            "dimensions":"longitude latitude time typesi",
            "frequency":"mon",
            "long_name":"Sea-ice Area Percentage (Ocean Grid)",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siconc",
            "positive":"",
            "standard_name":"sea_ice_area_fraction",
            "type":"real",
            "units":"%",
            "valid_max":"",
            "valid_min":""
        },
        "siconca":{
            "cell_measures":"",
            "cell_methods":"area: time: mean",
            "comment":"Area fraction of grid cell covered by sea ice",
            "dimensions":"longitude latitude time typesi",
            "frequency":"mon",
            "long_name":"Sea-ice Area Percentage (Atmospheric Grid)",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siconca",
            "positive":"",
            "standard_name":"sea_ice_area_fraction",
            "type":"real",
            "units":"%",
            "valid_max":"",
            "valid_min":""
        },
        "sidconcdyn":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "comment":"Total change in sea-ice area fraction through dynamics-related processes (advection, divergence...)",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Sea-ice Area Percentage Tendency Due to Dynamics",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidconcdyn",
            "positive":"",
            "standard_name":"tendency_of_sea_ice_area_fraction_due_to_dynamics",
            "type":"real",
            "units":"s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sidconcth":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "comment":"Total change in sea-ice area fraction through thermodynamic processes",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Sea-ice Area Percentage Tendency Due to Thermodynamics",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidconcth",
            "positive":"",
            "standard_name":"tendency_of_sea_ice_area_fraction_due_to_thermodynamics",
            "type":"real",
            "units":"s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sidivvel":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea_ice (comment: mask=siconc) time: point",
            "comment":"Divergence of sea-ice velocity field (first shear strain invariant)",
            "dimensions":"longitude latitude time1",
            "frequency":"monPt",
            "long_name":"Divergence of the Sea-Ice Velocity Field",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidivvel",
            "positive":"",
            "standard_name":"divergence_of_sea_ice_velocity",
            "type":"real",
            "units":"s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sidmassdyn":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "comment":"Total change in sea-ice mass through dynamics-related processes (advection,...) divided by grid-cell area",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Sea-Ice Mass Change from Dynamics",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidmassdyn",
            "positive":"",
            "standard_name":"tendency_of_sea_ice_amount_due_to_sea_ice_dynamics",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sidmassevapsubl":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "comment":"The rate of change of sea-ice mass change through evaporation and sublimation divided by grid-cell area",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Sea-Ice Mass Change Through Evaporation and Sublimation",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidmassevapsubl",
            "positive":"up",
            "standard_name":"water_evapotranspiration_flux",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sidmassgrowthbot":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "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",
            "frequency":"mon",
            "long_name":"Sea-Ice Mass Change Through Basal Growth",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidmassgrowthbot",
            "positive":"",
            "standard_name":"tendency_of_sea_ice_amount_due_to_congelation_ice_accumulation",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sidmassgrowthwat":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "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",
            "frequency":"mon",
            "long_name":"Sea-Ice Mass Change Through Growth in Supercooled Open Water (Frazil)",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidmassgrowthwat",
            "positive":"",
            "standard_name":"tendency_of_sea_ice_amount_due_to_frazil_ice_accumulation_in_leads",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sidmasslat":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "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",
            "frequency":"mon",
            "long_name":"Lateral Sea Ice Melt Rate",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidmasslat",
            "positive":"",
            "standard_name":"tendency_of_sea_ice_amount_due_to_lateral_melting",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sidmassmeltbot":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "comment":"The rate of change of sea ice mass through melting at the ice bottom divided by grid-cell area",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Sea-Ice Mass Change Through Bottom Melting",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidmassmeltbot",
            "positive":"",
            "standard_name":"tendency_of_sea_ice_amount_due_to_basal_melting",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sidmassmelttop":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "comment":"The rate of change of sea ice mass through melting at the ice surface divided by grid-cell area",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Sea-Ice Mass Change Through Surface Melting",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidmassmelttop",
            "positive":"",
            "standard_name":"tendency_of_sea_ice_amount_due_to_surface_melting",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sidmasssi":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "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",
            "frequency":"mon",
            "long_name":"Sea-Ice Mass Change Through Snow-to-Ice Conversion",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidmasssi",
            "positive":"",
            "standard_name":"tendency_of_sea_ice_amount_due_to_conversion_of_snow_to_sea_ice",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sidmassth":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "comment":"Total change in sea-ice mass from thermodynamic processes divided by grid-cell area",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Sea-Ice Mass Change from Thermodynamics",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidmassth",
            "positive":"",
            "standard_name":"tendency_of_sea_ice_amount_due_to_sea_ice_thermodynamics",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sidmasstranx":{
            "cell_measures":"",
            "cell_methods":"time: mean",
            "comment":"Includes transport of both sea ice and snow by advection",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"X-Component of Sea-Ice Mass Transport",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidmasstranx",
            "positive":"",
            "standard_name":"sea_ice_x_transport",
            "type":"real",
            "units":"kg s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sidmasstrany":{
            "cell_measures":"",
            "cell_methods":"time: mean",
            "comment":"Includes transport of both sea ice and snow by advection",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Y-Component of Sea-Ice Mass Transport",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidmasstrany",
            "positive":"",
            "standard_name":"sea_ice_y_transport",
            "type":"real",
            "units":"kg s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sidragbot":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Oceanic drag coefficient that is used to calculate the oceanic momentum drag on sea ice",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Ocean Drag Coefficient",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidragbot",
            "positive":"",
            "standard_name":"sea_ice_basal_drag_coefficient_for_momentum_in_sea_water",
            "type":"real",
            "units":"1",
            "valid_max":"",
            "valid_min":""
        },
        "sidragtop":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Atmospheric drag coefficient that is used to calculate the atmospheric momentum drag on sea ice",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Atmospheric Drag Coefficient",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sidragtop",
            "positive":"",
            "standard_name":"surface_drag_coefficient_for_momentum_in_air",
            "type":"real",
            "units":"1",
            "valid_max":"",
            "valid_min":""
        },
        "siextentn":{
            "cell_measures":"",
            "cell_methods":"area: time: mean",
            "comment":"Total area of all Northern-Hemisphere grid cells that are covered by at least 15 % areal fraction of sea ice",
            "dimensions":"time",
            "frequency":"mon",
            "long_name":"Sea-Ice Extent North",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siextentn",
            "positive":"",
            "standard_name":"sea_ice_extent",
            "type":"real",
            "units":"1e6 km2",
            "valid_max":"",
            "valid_min":""
        },
        "siextents":{
            "cell_measures":"",
            "cell_methods":"area: time: mean",
            "comment":"Total area of all Southern-Hemisphere grid cells that are covered by at least 15 % areal fraction of sea ice",
            "dimensions":"time",
            "frequency":"mon",
            "long_name":"Sea-Ice Extent South",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siextents",
            "positive":"",
            "standard_name":"sea_ice_extent",
            "type":"real",
            "units":"1e6 km2",
            "valid_max":"",
            "valid_min":""
        },
        "sifb":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Mean height of sea-ice surface (=snow-ice interface when snow covered) above sea level",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Sea-Ice Freeboard",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sifb",
            "positive":"",
            "standard_name":"sea_ice_freeboard",
            "type":"real",
            "units":"m",
            "valid_max":"",
            "valid_min":""
        },
        "siflcondbot":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"the net heat conduction flux at the ice base",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Net Conductive Heat Fluxes in Ice at the Bottom",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siflcondbot",
            "positive":"down",
            "standard_name":"basal_downward_heat_flux_in_sea_ice",
            "type":"real",
            "units":"W m-2",
            "valid_max":"",
            "valid_min":""
        },
        "siflcondtop":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"the net heat conduction flux at the ice surface",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Net Conductive Heat Flux in Ice at the Surface",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siflcondtop",
            "positive":"down",
            "standard_name":"surface_downward_sensible_heat_flux",
            "type":"real",
            "units":"W m-2",
            "valid_max":"",
            "valid_min":""
        },
        "siflfwbot":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "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",
            "frequency":"mon",
            "long_name":"Freshwater Flux from Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siflfwbot",
            "positive":"",
            "standard_name":"water_flux_into_sea_water_due_to_sea_ice_thermodynamics",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "siflfwdrain":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "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",
            "frequency":"mon",
            "long_name":"Freshwater Flux from Sea-Ice Surface",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siflfwdrain",
            "positive":"",
            "standard_name":"water_flux_into_sea_water_due_to_surface_drainage",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sifllatstop":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconca)",
            "comment":"the net latent heat flux over sea ice",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Net Latent Heat Flux over Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sifllatstop",
            "positive":"up",
            "standard_name":"surface_upward_latent_heat_flux",
            "type":"real",
            "units":"W m-2",
            "valid_max":"",
            "valid_min":""
        },
        "sifllwdtop":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconca)",
            "comment":"the downwelling longwave flux over sea ice (always positive)",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Downwelling Longwave Flux over Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sifllwdtop",
            "positive":"down",
            "standard_name":"surface_downwelling_longwave_flux_in_air",
            "type":"real",
            "units":"W m-2",
            "valid_max":"",
            "valid_min":""
        },
        "sifllwutop":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconca)",
            "comment":"the upwelling longwave flux over sea ice (always negative)",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Upwelling Longwave Flux over Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sifllwutop",
            "positive":"up",
            "standard_name":"surface_upwelling_longwave_flux_in_air",
            "type":"real",
            "units":"W m-2",
            "valid_max":"",
            "valid_min":""
        },
        "siflsenstop":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconca)",
            "comment":"the net sensible heat flux over sea ice",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Net Upward Sensible Heat Flux over Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siflsenstop",
            "positive":"up",
            "standard_name":"surface_upward_sensible_heat_flux",
            "type":"real",
            "units":"W m-2",
            "valid_max":"",
            "valid_min":""
        },
        "siflsensupbot":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"the net sensible heat flux under sea ice from the ocean",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Net Upward Sensible Heat Flux Under Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siflsensupbot",
            "positive":"up",
            "standard_name":"upward_sea_ice_basal_heat_flux",
            "type":"real",
            "units":"W m-2",
            "valid_max":"",
            "valid_min":""
        },
        "siflswdbot":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"The downwelling shortwave flux underneath sea ice (always positive)",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Downwelling Shortwave Flux Under Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siflswdbot",
            "positive":"down",
            "standard_name":"downwelling_shortwave_flux_in_sea_water_at_sea_ice_base",
            "type":"real",
            "units":"W m-2",
            "valid_max":"",
            "valid_min":""
        },
        "siflswdtop":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconca)",
            "comment":"The downwelling shortwave flux over sea ice (always positive by sign convention)",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Downwelling Shortwave Flux over Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siflswdtop",
            "positive":"down",
            "standard_name":"surface_downwelling_shortwave_flux_in_air",
            "type":"real",
            "units":"W m-2",
            "valid_max":"",
            "valid_min":""
        },
        "siflswutop":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconca)",
            "comment":"The upwelling shortwave flux over sea ice (always negative)",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Upwelling Shortwave Flux over Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siflswutop",
            "positive":"up",
            "standard_name":"surface_upwelling_shortwave_flux_in_air",
            "type":"real",
            "units":"W m-2",
            "valid_max":"",
            "valid_min":""
        },
        "siforcecoriolx":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"X-component of force on sea ice caused by coriolis force",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Coriolis Force Term in Force Balance (X-Component)",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siforcecoriolx",
            "positive":"",
            "standard_name":"sea_ice_x_force_per_unit_area_due_to_coriolis_effect",
            "type":"real",
            "units":"N m-2",
            "valid_max":"",
            "valid_min":""
        },
        "siforcecorioly":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Y-component of force on sea ice caused by coriolis force",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Coriolis Force Term in Force Balance (Y-Component)",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siforcecorioly",
            "positive":"",
            "standard_name":"sea_ice_y_force_per_unit_area_due_to_coriolis_effect",
            "type":"real",
            "units":"N m-2",
            "valid_max":"",
            "valid_min":""
        },
        "siforceintstrx":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"X-component of force on sea ice caused by internal stress (divergence of sigma)",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Internal Stress Term in Force Balance (X-Component)",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siforceintstrx",
            "positive":"",
            "standard_name":"sea_ice_x_internal_stress",
            "type":"real",
            "units":"N m-2",
            "valid_max":"",
            "valid_min":""
        },
        "siforceintstry":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Y-component of force on sea ice caused by internal stress (divergence of sigma)",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Internal Stress Term in Force Balance (Y-Component)",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siforceintstry",
            "positive":"",
            "standard_name":"sea_ice_y_internal_stress",
            "type":"real",
            "units":"N m-2",
            "valid_max":"",
            "valid_min":""
        },
        "siforcetiltx":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"X-component of force on sea ice caused by sea-surface tilt",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Sea-Surface Tilt Term in Force Balance (X-Component)",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siforcetiltx",
            "positive":"",
            "standard_name":"sea_ice_x_force_per_unit_area_due_to_sea_surface_tilt",
            "type":"real",
            "units":"N m-2",
            "valid_max":"",
            "valid_min":""
        },
        "siforcetilty":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Y-component of force on sea ice caused by sea-surface tilt",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Sea-Surface Tilt Term in Force Balance (Y-Component)",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siforcetilty",
            "positive":"",
            "standard_name":"sea_ice_y_force_per_unit_area_due_to_sea_surface_tilt",
            "type":"real",
            "units":"N m-2",
            "valid_max":"",
            "valid_min":""
        },
        "sihc":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "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",
            "frequency":"mon",
            "long_name":"Sea-Ice Heat Content per Unit Area",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sihc",
            "positive":"",
            "standard_name":"sea_ice_temperature_expressed_as_heat_content",
            "type":"real",
            "units":"J m-2",
            "valid_max":"",
            "valid_min":""
        },
        "siitdconc":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Area fraction 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",
            "frequency":"mon",
            "long_name":"Sea-Ice Area Percentages in Thickness Categories",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siitdconc",
            "positive":"",
            "standard_name":"sea_ice_area_fraction",
            "type":"real",
            "units":"%",
            "valid_max":"",
            "valid_min":""
        },
        "siitdsnconc":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siitdconc)",
            "comment":"Area fraction 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",
            "frequency":"mon",
            "long_name":"Snow Area Percentages in Ice Thickness Categories",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siitdsnconc",
            "positive":"",
            "standard_name":"surface_snow_area_fraction",
            "type":"real",
            "units":"%",
            "valid_max":"",
            "valid_min":""
        },
        "siitdsnthick":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siitdconc)",
            "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",
            "frequency":"mon",
            "long_name":"Snow Thickness in Ice Thickness Categories",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siitdsnthick",
            "positive":"",
            "standard_name":"surface_snow_thickness",
            "type":"real",
            "units":"m",
            "valid_max":"",
            "valid_min":""
        },
        "siitdthick":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siitdconc)",
            "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",
            "frequency":"mon",
            "long_name":"Sea-Ice Thickness in Thickness Categories",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siitdthick",
            "positive":"",
            "standard_name":"sea_ice_thickness",
            "type":"real",
            "units":"m",
            "valid_max":"",
            "valid_min":""
        },
        "simass":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "comment":"Total mass of sea ice divided by grid-cell area",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Sea-Ice Mass per Area",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"simass",
            "positive":"",
            "standard_name":"sea_ice_amount",
            "type":"real",
            "units":"kg m-2",
            "valid_max":"",
            "valid_min":""
        },
        "simassacrossline":{
            "cell_measures":"",
            "cell_methods":"time: mean",
            "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",
            "frequency":"mon",
            "long_name":"Sea Mass Area Flux Through Straits",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"simassacrossline",
            "positive":"",
            "standard_name":"sea_ice_transport_across_line",
            "type":"real",
            "units":"kg s-1",
            "valid_max":"",
            "valid_min":""
        },
        "simpconc":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "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",
            "frequency":"mon",
            "long_name":"Percentage Cover of Sea Ice by Meltpond",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"simpconc",
            "positive":"",
            "standard_name":"area_fraction",
            "type":"real",
            "units":"%",
            "valid_max":"",
            "valid_min":""
        },
        "simpmass":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice_melt_pond (comment: mask=simpconc)",
            "comment":"Meltpond Depth",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Meltpond Mass per Unit Area (as Depth)",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"simpmass",
            "positive":"",
            "standard_name":"sea_ice_melt_pond_thickness",
            "type":"real",
            "units":"m",
            "valid_max":"",
            "valid_min":""
        },
        "simprefrozen":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice_melt_pond (comment: mask=simpconc)",
            "comment":"Volume of refrozen ice on melt ponds divided by meltpond covered area",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Thickness of Refrozen Ice on Melt Pond",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"simprefrozen",
            "positive":"",
            "standard_name":"thickness_of_ice_on_sea_ice_melt_pond",
            "type":"real",
            "units":"m",
            "valid_max":"",
            "valid_min":""
        },
        "sipr":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"mass of liquid precipitation falling onto sea ice divided by grid-cell area",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Rainfall Rate over Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sipr",
            "positive":"",
            "standard_name":"rainfall_flux",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sirdgconc":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "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",
            "frequency":"mon",
            "long_name":"Percentage Cover of Sea Ice by Ridging",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sirdgconc",
            "positive":"",
            "standard_name":"area_fraction",
            "type":"real",
            "units":"1",
            "valid_max":"",
            "valid_min":""
        },
        "sirdgthick":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice_ridges (comment: mask=sirdgconc)",
            "comment":"Sea Ice Ridge Height (representing mean height over the ridged area)",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Ridged Ice Thickness",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sirdgthick",
            "positive":"",
            "standard_name":"sea_ice_thickness",
            "type":"real",
            "units":"m",
            "valid_max":"",
            "valid_min":""
        },
        "sisali":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Mean sea-ice salinity of all sea ice in grid cell",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Sea Ice Salinity",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sisali",
            "positive":"",
            "standard_name":"sea_ice_salinity",
            "type":"real",
            "units":"0.001",
            "valid_max":"",
            "valid_min":""
        },
        "sisaltmass":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "comment":"Total mass of all salt in sea ice divided by grid-cell area",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Mass of Salt in Sea Ice per Area",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sisaltmass",
            "positive":"",
            "standard_name":"sea_ice_mass_content_of_salt",
            "type":"real",
            "units":"kg m-2",
            "valid_max":"",
            "valid_min":""
        },
        "sishevel":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea_ice (comment: mask=siconc) time: point",
            "comment":"Maximum shear of sea-ice velocity field (second shear strain invariant)",
            "dimensions":"longitude latitude time1",
            "frequency":"monPt",
            "long_name":"Maximum Shear of Sea-Ice Velocity Field",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sishevel",
            "positive":"",
            "standard_name":"maximum_over_coordinate_rotation_of_sea_ice_horizontal_shear_strain_rate",
            "type":"real",
            "units":"s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sisnconc":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Fraction 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",
            "frequency":"mon",
            "long_name":"Snow Area Percentage",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sisnconc",
            "positive":"",
            "standard_name":"surface_snow_area_fraction",
            "type":"real",
            "units":"%",
            "valid_max":"",
            "valid_min":""
        },
        "sisnhc":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "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",
            "frequency":"mon",
            "long_name":"Snow Heat Content per Unit Area",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sisnhc",
            "positive":"",
            "standard_name":"thermal_energy_content_of_surface_snow",
            "type":"real",
            "units":"J m-2",
            "valid_max":"",
            "valid_min":""
        },
        "sisnmass":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Total mass of snow on sea ice divided by sea-ice area.",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Snow Mass per Area",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sisnmass",
            "positive":"",
            "standard_name":"liquid_water_content_of_surface_snow",
            "type":"real",
            "units":"kg m-2",
            "valid_max":"",
            "valid_min":""
        },
        "sisnthick":{
            "cell_measures":"",
            "cell_methods":"area: mean where snow over sea_ice area: time: mean where sea_ice",
            "comment":"Actual thickness of snow (snow volume divided by snow-covered area)",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Snow Thickness",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sisnthick",
            "positive":"",
            "standard_name":"surface_snow_thickness",
            "type":"real",
            "units":"m",
            "valid_max":"",
            "valid_min":""
        },
        "sispeed":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Speed of ice (i.e. mean absolute velocity) to account for back-and-forth movement of the ice",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Sea-Ice Speed",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sispeed",
            "positive":"",
            "standard_name":"sea_ice_speed",
            "type":"real",
            "units":"m s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sistremax":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea_ice (comment: mask=siconc) time: point",
            "comment":"Maximum shear stress in sea ice (second stress invariant)",
            "dimensions":"longitude latitude time1",
            "frequency":"monPt",
            "long_name":"Maximum Shear Stress in Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sistremax",
            "positive":"",
            "standard_name":"maximum_over_coordinate_rotation_of_sea_ice_horizontal_shear_stress",
            "type":"real",
            "units":"N m-1",
            "valid_max":"",
            "valid_min":""
        },
        "sistresave":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea_ice (comment: mask=siconc) time: point",
            "comment":"Average normal stress in sea ice (first stress invariant)",
            "dimensions":"longitude latitude time1",
            "frequency":"monPt",
            "long_name":"Average Normal Stress in Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sistresave",
            "positive":"",
            "standard_name":"sea_ice_average_normal_horizontal_stress",
            "type":"real",
            "units":"N m-1",
            "valid_max":"",
            "valid_min":""
        },
        "sistrxdtop":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"X-component of atmospheric stress on sea ice",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"X-Component of Atmospheric Stress on Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sistrxdtop",
            "positive":"down",
            "standard_name":"surface_downward_x_stress",
            "type":"real",
            "units":"N m-2",
            "valid_max":"",
            "valid_min":""
        },
        "sistrxubot":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"X-component of ocean stress on sea ice",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"X-Component of Ocean Stress on Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sistrxubot",
            "positive":"up",
            "standard_name":"upward_x_stress_at_sea_ice_base",
            "type":"real",
            "units":"N m-2",
            "valid_max":"",
            "valid_min":""
        },
        "sistrydtop":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Y-component of atmospheric stress on sea ice",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Y-Component of Atmospheric Stress on Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sistrydtop",
            "positive":"down",
            "standard_name":"surface_downward_y_stress",
            "type":"real",
            "units":"N m-2",
            "valid_max":"",
            "valid_min":""
        },
        "sistryubot":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Y-component of ocean stress on sea ice",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Y-Component of Ocean Stress on Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sistryubot",
            "positive":"up",
            "standard_name":"upward_y_stress_at_sea_ice_base",
            "type":"real",
            "units":"N m-2",
            "valid_max":"",
            "valid_min":""
        },
        "sitempbot":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Report temperature at interface, NOT temperature within lowermost model layer",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Temperature at Ice-Ocean Interface",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sitempbot",
            "positive":"",
            "standard_name":"sea_ice_basal_temperature",
            "type":"real",
            "units":"K",
            "valid_max":"",
            "valid_min":""
        },
        "sitempsnic":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Report surface temperature of ice where snow thickness is zero",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Temperature at Snow-Ice Interface",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sitempsnic",
            "positive":"",
            "standard_name":"sea_ice_surface_temperature",
            "type":"real",
            "units":"K",
            "valid_max":"",
            "valid_min":""
        },
        "sitemptop":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Report surface temperature of snow where snow covers the sea ice.",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Surface Temperature of Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sitemptop",
            "positive":"",
            "standard_name":"sea_ice_surface_temperature",
            "type":"real",
            "units":"K",
            "valid_max":"",
            "valid_min":""
        },
        "sithick":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"Actual (floe) thickness of sea ice (NOT volume divided by grid area as was done in CMIP5)",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Sea Ice Thickness",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sithick",
            "positive":"",
            "standard_name":"sea_ice_thickness",
            "type":"real",
            "units":"m",
            "valid_max":"",
            "valid_min":""
        },
        "sitimefrac":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "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",
            "frequency":"mon",
            "long_name":"Fraction of Time Steps with Sea Ice",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sitimefrac",
            "positive":"",
            "standard_name":"fraction_of_time_with_sea_ice_area_fraction_above_threshold",
            "type":"real",
            "units":"1",
            "valid_max":"",
            "valid_min":""
        },
        "siu":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"The x-velocity of ice on native model grid",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"X-Component of Sea-Ice Velocity",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siu",
            "positive":"",
            "standard_name":"sea_ice_x_velocity",
            "type":"real",
            "units":"m s-1",
            "valid_max":"",
            "valid_min":""
        },
        "siv":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"The y-velocity of ice on native model grid",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Y-Component of Sea-Ice Velocity",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"siv",
            "positive":"",
            "standard_name":"sea_ice_y_velocity",
            "type":"real",
            "units":"m s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sivol":{
            "cell_measures":"",
            "cell_methods":"area: mean where sea time: mean",
            "comment":"Total volume of sea ice divided by grid-cell area (this used to be called ice thickness in CMIP5)",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Sea-Ice Volume per Area",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sivol",
            "positive":"",
            "standard_name":"sea_ice_thickness",
            "type":"real",
            "units":"m",
            "valid_max":"",
            "valid_min":""
        },
        "sivoln":{
            "cell_measures":"",
            "cell_methods":"area: time: mean",
            "comment":"total volume of sea ice in the Northern hemisphere",
            "dimensions":"time",
            "frequency":"mon",
            "long_name":"Sea-Ice Volume North",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sivoln",
            "positive":"",
            "standard_name":"sea_ice_volume",
            "type":"real",
            "units":"1e3 km3",
            "valid_max":"",
            "valid_min":""
        },
        "sivols":{
            "cell_measures":"",
            "cell_methods":"area: time: mean",
            "comment":"total volume of sea ice in the Southern hemisphere",
            "dimensions":"time",
            "frequency":"mon",
            "long_name":"Sea-Ice Volume South",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sivols",
            "positive":"",
            "standard_name":"sea_ice_volume",
            "type":"real",
            "units":"1e3 km3",
            "valid_max":"",
            "valid_min":""
        },
        "sndmassdyn":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"The rate of change of snow mass through advection with sea ice divided by sea-ice area",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Snow Mass Rate of Change Through Advection by Sea-Ice Dynamics",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sndmassdyn",
            "positive":"",
            "standard_name":"tendency_of_surface_snow_amount_due_to_sea_ice_dynamics",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sndmassmelt":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"the rate of change of snow mass through melt divided by sea-ice area",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Snow Mass Rate of Change Through Melt",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sndmassmelt",
            "positive":"",
            "standard_name":"surface_snow_melt_flux",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sndmasssi":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "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",
            "frequency":"mon",
            "long_name":"Snow Mass Rate of Change Through Snow-to-Ice Conversion",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sndmasssi",
            "positive":"",
            "standard_name":"tendency_of_surface_snow_amount_due_to_conversion_of_snow_to_sea_ice",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sndmasssnf":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"mass of solid precipitation falling onto sea ice divided by sea-ice area",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Snow Mass Change Through Snow Fall",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sndmasssnf",
            "positive":"",
            "standard_name":"snowfall_flux",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sndmasssubl":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "comment":"the rate of change of snow mass through sublimation and evaporation divided by sea-ice area",
            "dimensions":"longitude latitude time",
            "frequency":"mon",
            "long_name":"Snow Mass Rate of Change Through Evaporation or Sublimation",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sndmasssubl",
            "positive":"",
            "standard_name":"tendency_of_atmosphere_mass_content_of_water_vapor_due_to_sublimation_of_surface_snow_and_ice",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "sndmasswindrif":{
            "cell_measures":"",
            "cell_methods":"area: time: mean where sea_ice (comment: mask=siconc)",
            "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",
            "frequency":"mon",
            "long_name":"Snow Mass Rate of Change Through Wind Drift of Snow",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"sndmasswindrif",
            "positive":"",
            "standard_name":"tendency_of_surface_snow_amount_due_to_drifting_into_sea",
            "type":"real",
            "units":"kg m-2 s-1",
            "valid_max":"",
            "valid_min":""
        },
        "snmassacrossline":{
            "cell_measures":"",
            "cell_methods":"time: mean",
            "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",
            "frequency":"mon",
            "long_name":"Snow Mass Flux Through Straits",
            "ok_max_mean_abs":"",
            "ok_min_mean_abs":"",
            "out_name":"snmassacrossline",
            "positive":"",
            "standard_name":"snow_transport_across_line_due_to_sea_ice_dynamics",
            "type":"real",
            "units":"kg s-1",
            "valid_max":"",
            "valid_min":""
        }
    }
}