| 1 | <?xml version="1.0"?> |
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| 2 | <!-- $id$ --> |
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| 3 | |
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| 4 | <!-- |
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| 5 | ============================================================================================================ |
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| 6 | = definition of all existing ice variables = |
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| 7 | = DO NOT CHANGE = |
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| 8 | ============================================================================================================ |
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| 9 | --> |
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| 10 | <field_definition level="1" prec="4" operation="average" enabled=".TRUE." default_value="1.e20" > <!-- time step automaticaly defined --> |
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| 11 | |
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| 12 | <field_group id="SBC" grid_ref="grid_T_2D" > <!-- time step automaticaly defined based on nn_fsbc --> |
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| 13 | |
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| 14 | <!-- =================== --> |
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| 15 | <!-- standard ice fields --> |
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| 16 | <!-- =================== --> |
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| 17 | <!-- ice presence masks --> |
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| 18 | <field id="icemask" long_name="Fraction of time steps with sea ice" standard_name="sea_ice_mask" unit="" /> |
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| 19 | <field id="icemask05" long_name="Ice mask (0 if ice conc. lower than 5%, 1 otherwise)" standard_name="sea_ice_mask05" unit="" /> |
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| 20 | <field id="icemask15" long_name="Ice mask (0 if ice conc. lower than 15%, 1 otherwise)" standard_name="sea_ice_mask15" unit="" /> |
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| 21 | <field id="icepres" long_name="Fraction of time steps with sea ice" standard_name="sea_ice_time_fraction" unit="" /> |
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| 22 | |
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| 23 | <!-- general fields --> |
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| 24 | <field id="icemass" long_name="Sea-ice mass per area" standard_name="sea_ice_amount" unit="kg/m2"/> |
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| 25 | <field id="snwmass" long_name="Snow mass per area" standard_name="liquid_water_content_of_surface_snow" unit="kg/m2"/> |
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| 26 | <field id="iceconc" long_name="Sea-ice area fraction" standard_name="sea_ice_area_fraction" unit="" /> |
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| 27 | <field id="icevolu" long_name="Sea-ice volume per area" standard_name="sea_ice_thickness" unit="m" /> |
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| 28 | <field id="icethic" long_name="Sea-ice thickness per area" standard_name="sea_ice_thickness" unit="m" /> |
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| 29 | <field id="snwthic" long_name="Snow thickness per area" standard_name="snow_thickness" unit="m" /> |
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| 30 | <field id="icebrv" long_name="brine volume" unit="%" /> |
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| 31 | <field id="iceage" long_name="ice age" unit="days"/> |
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| 32 | <field id="icehnew" long_name="frazil ice collection thickness" unit="m" /> |
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| 33 | <field id="snwvolu" long_name="snow volume" unit="m" /> |
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| 34 | <field id="icefrb" long_name="Sea-ice freeboard" standard_name="sea_ice_freeboard" unit="m" /> |
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| 35 | <field id="icealb" long_name="Sea-ice or snow albedo" standard_name="sea_ice_albedo" unit="" /> |
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| 36 | <field id="tau_icebfr" long_name="ice friction on ocean bottom for landfast ice" unit="N/2" /> |
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| 37 | |
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| 38 | <!-- melt ponds --> |
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| 39 | <field id="iceapnd" long_name="melt pond fraction" standard_name="sea_ice_meltpond_fraction" unit="%" /> |
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| 40 | <field id="icevpnd" long_name="melt pond volume" standard_name="sea_ice_meltpond_volume" unit="m" /> |
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| 41 | |
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| 42 | <!-- heat --> |
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| 43 | <field id="icetemp" long_name="Mean ice temperature" unit="degC" /> |
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| 44 | <field id="icettop" long_name="temperature at the ice surface" unit="degC" /> |
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| 45 | <field id="icetbot" long_name="temperature at the ice bottom" unit="degC" /> |
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| 46 | <field id="icetsni" long_name="temperature at the snow-ice interface" unit="degC" /> |
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| 47 | <field id="icehc" long_name="ice heat content" unit="J/m2" /> |
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| 48 | <field id="snwhc" long_name="snow heat content" unit="J/m2" /> |
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| 49 | |
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| 50 | <!-- salt --> |
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| 51 | <field id="icesalt" long_name="Sea ice salinity" unit="g/kg" /> |
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| 52 | <field id="icesalm" long_name="Mass of salt in sea ice per area" standard_name="sea_ice_salt_mass" unit="kg/m2" /> |
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| 53 | |
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| 54 | <!-- momentum (rheology) --> |
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| 55 | <field id="uice" long_name="X-component of sea ice velocity" standard_name="sea_ice_x_velocity" unit="m/s" /> |
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| 56 | <field id="vice" long_name="Y-component of sea ice velocity" standard_name="sea_ice_y_velocity" unit="m/s" /> |
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| 57 | <field id="icevel" long_name="Sea-ice speed" standard_name="sea_ice_speed" unit="m/s" /> |
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| 58 | <field id="utau_ai" long_name="X-component of atmospheric stress on sea ice" standard_name="surface_downward_x_stress" unit="N/m2" /> |
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| 59 | <field id="vtau_ai" long_name="Y-component of atmospheric stress on sea ice" standard_name="surface_downward_y_stress" unit="N/m2" /> |
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| 60 | <field id="utau_oi" long_name="X-component of ocean stress on sea ice" standard_name="sea_ice_base_upward_x_stress" unit="N/m2" /> |
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| 61 | <field id="vtau_oi" long_name="Y-component of ocean stress on sea ice" standard_name="sea_ice_base_upward_y_stress" unit="N/m2" /> |
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| 62 | <field id="isig1" long_name="1st principal stress component for EVP rhg" unit="" /> |
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| 63 | <field id="isig2" long_name="2nd principal stress component for EVP rhg" unit="" /> |
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| 64 | <field id="isig3" long_name="convergence measure for EVP rheology (must be around 1)" unit="" /> |
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| 65 | <field id="normstr" long_name="Average normal stress in sea ice" standard_name="average_normal_stress" unit="N/m" /> |
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| 66 | <field id="sheastr" long_name="Maximum shear stress in sea ice" standard_name="maximum_shear_stress" unit="N/m" /> |
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| 67 | <field id="icestr" long_name="Compressive sea ice strength" standard_name="compressive_strength_of_sea_ice" unit="N/m" /> |
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| 68 | <field id="icediv" long_name="Divergence of the sea-ice velocity field" standard_name="divergence_of_sea_ice_velocity" unit="s-1" /> |
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| 69 | <field id="iceshe" long_name="Maximum shear of sea-ice velocity field" standard_name="maximum_shear_of_sea_ice_velocity" unit="s-1" /> |
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| 70 | |
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| 71 | <!-- surface heat fluxes --> |
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| 72 | <field id="qt_ice" long_name="total heat flux at ice surface" standard_name="surface_downward_heat_flux_in_air" unit="W/m2" /> |
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| 73 | <field id="qsr_ice" long_name="solar heat flux at ice surface" standard_name="surface_downwelling_shortwave_flux_in_air" unit="W/m2" /> |
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| 74 | <field id="qns_ice" long_name="non-solar heat flux at ice surface (including E-P)" unit="W/m2" /> |
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| 75 | <field id="qtr_ice_bot" long_name="solar heat flux transmitted through the ice (to the ocean)" unit="W/m2" /> |
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| 76 | <field id="qtr_ice_top" long_name="solar heat flux transmitted through the ice surface" unit="W/m2" /> |
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| 77 | <field id="qt_oce_ai" long_name="total heat flux at the ocean surface: interface oce-(ice+atm)" unit="W/m2" /> |
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| 78 | <field id="qt_atm_oi" long_name="total heat flux at the oce-ice surface: interface atm-(ice+oce)" unit="W/m2" /> |
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| 79 | <field id="qemp_ice" long_name="Downward Heat Flux from E-P over ice" unit="W/m2" /> |
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| 80 | <field id="albedo" long_name="Mean albedo over sea ice and ocean" unit="" /> |
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| 81 | |
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| 82 | <!-- trends --> |
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| 83 | <field id="afxthd" long_name="sea-ice area fraction change from thermodynamics" standard_name="tendency_of_sea_ice_area_fraction_due_to_dynamics" unit="s-1" /> |
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| 84 | <field id="afxdyn" long_name="sea-ice area fraction change from dynamics" standard_name="tendency_of_sea_ice_area_fraction_due_to_dynamics" unit="s-1" /> |
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| 85 | <field id="afxtot" long_name="area tendency (total)" unit="s-1" /> |
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| 86 | |
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| 87 | <!-- momentum (advection) --> |
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| 88 | <field id="icemtrp" long_name="ice mass transport" unit="kg/m2/s" /> |
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| 89 | <field id="snwmtrp" long_name="snw mass transport" unit="kg/m2/s" /> |
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| 90 | <field id="salmtrp" long_name="salt mass transport" unit="kg/m2/s" /> |
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| 91 | <field id="dihctrp" long_name="ice heat content transport" unit="W/m2" /> |
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| 92 | <field id="dshctrp" long_name="snw heat content transport" unit="W/m2" /> |
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| 93 | |
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| 94 | <!-- salt fluxes --> |
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| 95 | <field id="sfxice" long_name="ice-ocean salt flux from ice growth/melt (neg = growth)" unit="kg/m2/s" /> |
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| 96 | <field id="sfxbog" long_name="ice-ocean salt flux from ice bottom growth" unit="kg/m2/s" /> |
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| 97 | <field id="sfxbom" long_name="ice-ocean salt flux from ice bottom melt" unit="kg/m2/s" /> |
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| 98 | <field id="sfxsum" long_name="ice-ocean salt flux from ice surface melt" unit="kg/m2/s" /> |
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| 99 | <field id="sfxlam" long_name="ice-ocean salt flux from ice lateral melt" unit="kg/m2/s" /> |
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| 100 | <field id="sfxsni" long_name="ice-ocean salt flux from snow-ice formation" unit="kg/m2/s" /> |
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| 101 | <field id="sfxopw" long_name="ice-ocean salt flux from ice formation in open water" unit="kg/m2/s" /> |
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| 102 | <field id="sfxdyn" long_name="ice-ocean salt flux from ice dynamics (ridging)" unit="kg/m2/s" /> |
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| 103 | <field id="sfxbri" long_name="ice-ocean salt flux from brines" unit="kg/m2/s" /> |
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| 104 | <field id="sfxres" long_name="ice-ocean salt flux from undiagnosed processes" unit="kg/m2/s" /> |
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| 105 | <field id="sfxsub" long_name="ice-ocean salt flux from ice sublimation" unit="kg/m2/s" /> |
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| 106 | |
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| 107 | <!-- mass fluxes --> |
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| 108 | <field id="vfxice" long_name="ice-ocean mass flux from ice melt/growth (neg = growth)" unit="kg/m2/s" /> |
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| 109 | <field id="vfxbog" long_name="ice-ocean mass flux from ice bottom growth" unit="kg/m2/s" /> |
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| 110 | <field id="vfxbom" long_name="ice-ocean mass flux from ice bottom melt" unit="kg/m2/s" /> |
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| 111 | <field id="vfxsum" long_name="ice-ocean mass flux from ice surface melt" unit="kg/m2/s" /> |
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| 112 | <field id="vfxlam" long_name="ice-ocean mass flux from ice lateral melt" unit="kg/m2/s" /> |
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| 113 | <field id="vfxsni" long_name="ice-ocean mass flux from snow-ice formation" unit="kg/m2/s" /> |
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| 114 | <field id="vfxopw" long_name="ice-ocean mass flux from ice growth in open water" unit="kg/m2/s" /> |
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| 115 | <field id="vfxdyn" long_name="ice-ocean mass flux from ice dynamics (ridging)" unit="kg/m2/s" /> |
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| 116 | <field id="vfxres" long_name="ice-ocean mass flux from undiagnosed processes" unit="kg/m2/s" /> |
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| 117 | <field id="vfxpnd" long_name="ice-ocean mass flux from ice melt ponds" unit="kg/m2/s" /> |
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| 118 | <field id="vfxsub" long_name="ice-atm. mass flux from ice sublimation" unit="kg/m2/s" /> |
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| 119 | <field id="vfxsub_err" long_name="ice-ocean mass flux from unbalance in sublimation (incl. in qt_oce_ai)" unit="kg/m2/s" /> |
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| 120 | <field id="vfxthin" long_name="ice-ocean mass flux from ice growth in open water + thin ice(20cm)" unit="kg/m2/s" /> |
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| 121 | |
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| 122 | <field id="vfxsnw" long_name="ice-ocean mass flux from snw melt/growth (neg = growth)" unit="kg/m2/s" /> |
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| 123 | <field id="vfxsnw_sum" long_name="ice-ocean mass flux from snw surface melt" unit="kg/m2/s" /> |
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| 124 | <field id="vfxsnw_sni" long_name="ice-ocean mass flux from snow-ice formation" unit="kg/m2/s" /> |
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| 125 | <field id="vfxsnw_dyn" long_name="ice-ocean mass flux from dynamics (ridging)" unit="kg/m2/s" /> |
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| 126 | <field id="vfxsnw_sub" long_name="ice-atm. mass flux from snw sublimation" unit="kg/m2/s" /> |
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| 127 | <field id="vfxsnw_pre" long_name="snw precipitation on ice" unit="kg/m2/s" /> |
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| 128 | |
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| 129 | <!-- heat fluxes --> |
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| 130 | <field id="hfxbog" long_name="heat flux used for bottom ice growth (neg.)" unit="W/m2" /> |
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| 131 | <field id="hfxbom" long_name="heat flux used for bottom ice melt (pos.)" unit="W/m2" /> |
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| 132 | <field id="hfxsum" long_name="heat flux used for surface ice melt" unit="W/m2" /> |
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| 133 | <field id="hfxopw" long_name="heat flux used for open water ice formation" unit="W/m2" /> |
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| 134 | <field id="hfxdif" long_name="heat flux used for ice temperature change" unit="W/m2" /> |
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| 135 | <field id="hfxsnw" long_name="heat flux used for snow melt" unit="W/m2" /> |
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| 136 | <field id="hfxerr" long_name="heat flux error after heat diffusion" unit="W/m2" /> |
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| 137 | <!-- heat fluxes associated with mass exchange --> |
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| 138 | <field id="hfxthd" long_name="heat fluxes from ice-ocean mass exchange during thermo" unit="W/m2" /> |
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| 139 | <field id="hfxdyn" long_name="heat fluxes from ice-ocean mass exchange during dynamic" unit="W/m2" /> |
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| 140 | <field id="hfxres" long_name="heat fluxes from ice-ocean mass exchange during resultant" unit="W/m2" /> |
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| 141 | <field id="hfxsub" long_name="heat fluxes from ice-atm. mass exchange during sublimation" unit="W/m2" /> |
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| 142 | <field id="hfxspr" long_name="heat fluxes from ice-atm. mass exchange during snow precip" unit="W/m2" /> |
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| 143 | |
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| 144 | <field id="hfxsensib" long_name="Net sensible heat flux under sea ice (neg = ice cooling)" standard_name="ice_ocean_heat_flux" unit="W/m2" /> |
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| 145 | <field id="hfxcndtop" long_name="Net conductive heat flux at the ice surface (neg = ice cooling)" standard_name="conductive_heat_flux_at_sea_ice_surface" unit="W/m2" /> |
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| 146 | <field id="hfxcndbot" long_name="Net conductive heat flux at the ice bottom (neg = ice cooling)" standard_name="conductive_heat_flux_at_sea_ice_bottom" unit="W/m2" /> |
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| 147 | |
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| 148 | <!-- diags --> |
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| 149 | <field id="hfxdhc" long_name="Heat content variation in snow and ice (neg = ice cooling)" unit="W/m2" /> |
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| 150 | |
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| 151 | <!-- sbcssm variables --> |
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| 152 | <field id="sst_m" unit="degC" /> |
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| 153 | <field id="sss_m" unit="psu" /> |
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| 154 | <field id="ssu_m" unit="m/s" /> |
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| 155 | <field id="ssv_m" unit="m/s" /> |
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| 156 | <field id="ssh_m" unit="m" /> |
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| 157 | <field id="e3t_m" unit="m" /> |
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| 158 | <field id="frq_m" unit="-" /> |
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| 159 | |
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| 160 | <!-- categories --> |
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| 161 | <field id="iceconc_cat" long_name="Sea-ice concentration per category" unit="" grid_ref="grid_T_3D_ncatice" /> |
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| 162 | <field id="icethic_cat" long_name="Sea-ice thickness per category" unit="m" grid_ref="grid_T_3D_ncatice" /> |
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| 163 | <field id="snwthic_cat" long_name="Snow thickness per category" unit="m" grid_ref="grid_T_3D_ncatice" /> |
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| 164 | <field id="icesalt_cat" long_name="Sea-Ice Bulk salinity per category" unit="g/kg" grid_ref="grid_T_3D_ncatice" /> |
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| 165 | <field id="icetemp_cat" long_name="Ice temperature per category" unit="degC" grid_ref="grid_T_3D_ncatice" /> |
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| 166 | <field id="snwtemp_cat" long_name="Snow temperature per category" unit="degC" grid_ref="grid_T_3D_ncatice" /> |
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| 167 | <field id="iceapnd_cat" long_name="Ice melt pond concentration per category" unit="%" grid_ref="grid_T_3D_ncatice" /> |
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| 168 | <field id="icehpnd_cat" long_name="Ice melt pond thickness per category" unit="m" grid_ref="grid_T_3D_ncatice" /> |
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| 169 | <field id="iceafpnd_cat" long_name="Ice melt pond fraction per category" unit="m" grid_ref="grid_T_3D_ncatice" /> |
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| 170 | <field id="icemask_cat" long_name="Ice mask (0 if no ice, 1 otherwise) per category" unit="" grid_ref="grid_T_3D_ncatice" /> |
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| 171 | <field id="iceage_cat" long_name="Ice age per category" unit="days" grid_ref="grid_T_3D_ncatice" /> |
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| 172 | <field id="icebrv_cat" long_name="Brine volume per category" unit="%" grid_ref="grid_T_3D_ncatice" /> |
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| 173 | |
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| 174 | <!-- ================= --> |
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| 175 | <!-- Add-ons for SIMIP --> |
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| 176 | <!-- ================= --> |
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| 177 | <field id="icemass_cmip" long_name="Sea-ice mass per area" standard_name="sea_ice_amount" unit="kg/m2" > icemass * icemask + 1.e20 * (1.-icemask ) </field> |
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| 178 | <field id="icethic_cmip" long_name="Sea-ice thickness" standard_name="sea_ice_thickness" unit="m" > icethic * icemask05 + 1.e20 * (1.-icemask05) </field> |
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| 179 | <field id="snwmass_cmip" long_name="Snow mass per area" standard_name="liquid_water_content_of_surface_snow" unit="kg/m2" > snwmass * icemask + 1.e20 * (1.-icemask ) </field> |
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| 180 | <field id="snwthic_cmip" long_name="Snow thickness" standard_name="surface_snow_thickness" unit="m" > snwthic * icemask05 + 1.e20 * (1.-icemask05) </field> |
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| 181 | <field id="iceconc_pct" long_name="Sea-ice area fraction in percent" standard_name="sea_ice_area_fraction_in_percent" unit="%" > iceconc * 100. </field> |
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| 182 | <field id="iceage_cmip" long_name="Age of sea ice" standard_name="age_of_sea_ice" unit="days" > iceage * icemask15 + 1.e20 * (1.-icemask15) </field> |
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| 183 | <field id="icesalt_cmip" long_name="Sea ice salinity" standard_name="sea_ice_salinity" unit="g/kg" > icesalt * icemask + 1.e20 * (1.-icemask) </field> |
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| 184 | <field id="icefrb_cmip" long_name="Sea-ice freeboard" standard_name="sea_ice_freeboard" unit="m" > icefrb * icemask + 1.e20 * (1.-icemask) </field> |
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| 185 | |
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| 186 | <!-- heat --> |
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| 187 | <field id="icettop_cmip" long_name="Surface temperature of sea ice" standard_name="sea_ice_surface_temperature" unit="K" > (icettop+273.15) * icemask + 1.e20 * (1.-icemask) </field> |
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| 188 | <field id="icetsni_cmip" long_name="Temperature at snow-ice interface" standard_name="sea_ice_snow_interface_temperature" unit="K" > (icetsni+273.15) * icemask + 1.e20 * (1.-icemask) </field> |
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| 189 | <field id="icetbot_cmip" long_name="Temperature at ice-ocean interface" standard_name="sea_ice_bottom_temperature" unit="K" > (icetbot+273.15) * icemask + 1.e20 * (1.-icemask) </field> |
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| 190 | <field id="icehc_cmip" long_name="Sea-ice heat content per unit area" standard_name="integral_of_sea_ice_temperature_wrt_depth_expressed_as_heat_content" unit="J/m2" > icehc * icemask + 1.e20 * (1.-icemask) </field> |
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| 191 | <field id="snwhc_cmip" long_name="Snow-heat content per unit area" standard_name="thermal_energy_content_of_surface_snow" unit="J/m2" > snwhc * icemask + 1.e20 * (1.-icemask) </field> |
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| 192 | |
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| 193 | <!-- fluxes (mass, heat, salt) --> |
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| 194 | <field id="vfxsum_cmip" long_name="Freshwater flux from sea-ice surface" standard_name="freshwater_flux_from_ice_surface" unit="kg/m2/s" > vfxsum * icemask + 1.e20 * (1.-icemask) </field> |
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| 195 | <field id="vfxice_cmip" long_name="Freshwater flux from sea ice" standard_name="freshwater_flux_from_ice" unit="kg/m2/s" > vfxice * icemask + 1.e20 * (1.-icemask) </field> |
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| 196 | <field id="hfxsensib_cmip" long_name="Net sensible heat flux under sea ice" standard_name="ice_ocean_heat_flux" unit="W/m2" > hfxsensib * icemask + 1.e20 * (1.-icemask) </field> |
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| 197 | <field id="hfxcndtop_cmip" long_name="Net conductive heat flux at the ice surface" standard_name="conductive_heat_flux_at_sea_ice_surface" unit="W/m2" > hfxcndtop * icemask + 1.e20 * (1.-icemask) </field> |
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| 198 | <field id="hfxcndbot_cmip" long_name="Net conductive heat flux at the ice bottom" standard_name="conductive_heat_flux_at_sea_ice_bottom" unit="W/m2" > hfxcndbot * icemask + 1.e20 * (1.-icemask) </field> |
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| 199 | <field id="sfxice_cmip" long_name="Salt flux from sea ice" standard_name="salt_flux_from_ice" unit="kg/m2/s" > sfxice * icemask + 1.e20 * (1.-icemask) </field> |
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| 200 | |
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| 201 | <!-- trends --> |
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| 202 | <field id="dmithd" long_name="sea-ice mass change from thermodynamics" standard_name="tendency_of_sea_ice_amount_due_to_thermodynamics" unit="kg/m2/s" /> |
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| 203 | <field id="dmidyn" long_name="sea-ice mass change from dynamics" standard_name="tendency_of_sea_ice_amount_due_to_dynamics" unit="kg/m2/s" /> |
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| 204 | <field id="dmiopw" long_name="sea-ice mass change through growth in supercooled open water (frazil)" standard_name="tendency_of_sea_ice_amount_due_to_freezing_in_open_water" unit="kg/m2/s" /> |
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| 205 | <field id="dmibog" long_name="sea-ice mass change through basal growth" standard_name="tendency_of_sea_ice_amount_due_to_congelation_ice_accumulation" unit="kg/m2/s" /> |
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| 206 | <field id="dmisni" long_name="sea-ice mass change through snow-to-ice conversion" standard_name="tendency_of_sea_ice_amount_due_to_snow_conversion" unit="kg/m2/s" /> |
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| 207 | <field id="dmtsub" long_name="snow and sea ice mass change through sublimation" standard_name="tendency_of_snow_and_ice_amount_due_to_sublimation" unit="kg/m2/s" /> |
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| 208 | <field id="dmssub" long_name="sea-ice mass change through evaporation and sublimation" standard_name="water_evaporation_flux" unit="kg/m2/s" /> |
|---|
| 209 | <field id="dmisub" long_name="snow mass change through evaporation or sublimation" standard_name="surface_snow_sublimation_flux" unit="kg/m2/s" /> |
|---|
| 210 | <field id="dmisum" long_name="sea-ice mass change through surface melting" standard_name="tendency_of_sea_ice_amount_due_to_surface_melting" unit="kg/m2/s" /> |
|---|
| 211 | <field id="dmibom" long_name="sea-ice mass change through bottom melting" standard_name="tendency_of_sea_ice_amount_due_to_basal_melting" unit="kg/m2/s" /> |
|---|
| 212 | <field id="dmsspr" long_name="snow mass change through snow fall" standard_name="snowfall_flux" unit="kg/m2/s" /> |
|---|
| 213 | <field id="dmsmel" long_name="snow mass change through melt" standard_name="surface_snow_melt_flux" unit="kg/m2/s" /> |
|---|
| 214 | <field id="dmsdyn" long_name="snow mass change through advection by sea-ice dynamics" standard_name="tendency_of_snow_mass_due_to_sea_ice_dynamics" unit="kg/m2/s" /> |
|---|
| 215 | <field id="dmsssi" long_name="snow mass change through snow-to-ice conversion" standard_name="tendency_of_snow_mass_due_to_snow_to_ice_conversion" unit="kg/m2/s" /> |
|---|
| 216 | |
|---|
| 217 | <!-- momentum (rheology) --> |
|---|
| 218 | <field id="uice_cmip" long_name="X-component of sea ice velocity" standard_name="sea_ice_x_velocity" unit="m/s" > uice * icemask + 1.e20 * (1.-icemask) </field> |
|---|
| 219 | <field id="vice_cmip" long_name="Y-component of sea ice velocity" standard_name="sea_ice_y_velocity" unit="m/s" > vice * icemask + 1.e20 * (1.-icemask) </field> |
|---|
| 220 | <field id="icevel_cmip" long_name="Sea-ice speed" standard_name="sea_ice_speed" unit="m/s" > icevel * icemask + 1.e20 * (1.-icemask) </field> |
|---|
| 221 | <field id="utau_ai_cmip" long_name="X-component of atmospheric stress on sea ice" standard_name="surface_downward_x_stress" unit="N/m2" > utau_ai * icemask + 1.e20 * (1.-icemask) </field> |
|---|
| 222 | <field id="vtau_ai_cmip" long_name="Y-component of atmospheric stress on sea ice" standard_name="surface_downward_y_stress" unit="N/m2" > vtau_ai * icemask + 1.e20 * (1.-icemask) </field> |
|---|
| 223 | <field id="dssh_dx" long_name="Sea-surface tilt term in force balance (x-component)" standard_name="sea_surface_tilt_force_on_sea_ice_x" unit="N/m2" /> |
|---|
| 224 | <field id="dssh_dy" long_name="Sea-surface tilt term in force balance (y-component)" standard_name="sea_surface_tilt_force_on_sea_ice_y" unit="N/m2" /> |
|---|
| 225 | <field id="corstrx" long_name="Coriolis force term in force balance (x-component)" standard_name="coriolis_force_on_sea_ice_x" unit="N/m2" /> |
|---|
| 226 | <field id="corstry" long_name="Coriolis force term in force balance (y-component)" standard_name="coriolis_force_on_sea_ice_y" unit="N/m2" /> |
|---|
| 227 | <field id="intstrx" long_name="Internal stress term in force balance (x-component)" standard_name="internal_stress_in_sea_ice_x" unit="N/m2" /> |
|---|
| 228 | <field id="intstry" long_name="Internal stress term in force balance (y-component)" standard_name="internal_stress_in_sea_ice_y" unit="N/m2" /> |
|---|
| 229 | |
|---|
| 230 | <!-- momentum (advection) --> |
|---|
| 231 | <field id="xmtrpice" long_name="X-component of ice mass transport" standard_name="ice_x_transport" unit="kg/s" /> |
|---|
| 232 | <field id="ymtrpice" long_name="Y-component of ice mass transport" standard_name="ice_y_transport" unit="kg/s" /> |
|---|
| 233 | <field id="xmtrpsnw" long_name="X-component of snw mass transport" standard_name="snw_x_transport" unit="kg/s" /> |
|---|
| 234 | <field id="ymtrpsnw" long_name="Y-component of snw mass transport" standard_name="snw_y_transport" unit="kg/s" /> |
|---|
| 235 | <field id="xatrp" long_name="X-component of ice area transport" standard_name="area_x_transport" unit="m2/s" /> |
|---|
| 236 | <field id="yatrp" long_name="Y-component of ice area transport" standard_name="area_y_transport" unit="m2/s" /> |
|---|
| 237 | <field id="xmtrptot" long_name="X-component of sea-ice mass transport" standard_name="sea_ice_x_transport" unit="kg/s" > xmtrpice + xmtrpsnw </field> |
|---|
| 238 | <field id="ymtrptot" long_name="Y-component of sea-ice mass transport" standard_name="sea_ice_y_transport" unit="kg/s" > ymtrpice + ymtrpsnw </field> |
|---|
| 239 | |
|---|
| 240 | <!-- categories --> |
|---|
| 241 | <field id="iceconc_cat_cmip" long_name="Sea-ice area fractions in thickness categories" standard_name="sea_ice_area_fraction_over_categories" unit="" grid_ref="grid_T_3D_ncatice" > iceconc_cat * icemask_cat + 1.e20 * (1.-icemask_cat) </field> |
|---|
| 242 | <field id="icethic_cat_cmip" long_name="Sea-ice thickness in thickness categories" standard_name="sea_ice_thickness_over_categories" unit="m" grid_ref="grid_T_3D_ncatice" > icethic_cat * icemask_cat + 1.e20 * (1.-icemask_cat) </field> |
|---|
| 243 | <field id="snwthic_cat_cmip" long_name="Snow thickness in thickness categories" standard_name="snow_thickness_over_categories" unit="m" grid_ref="grid_T_3D_ncatice" > snwthic_cat * icemask_cat + 1.e20 * (1.-icemask_cat) </field> |
|---|
| 244 | <field id="iceconc_cat_pct_cmip" long_name="Sea-ice area fractions in thickness categories" standard_name="sea_ice_area_fraction_over_categories" unit="%" grid_ref="grid_T_3D_ncatice" > iceconc_cat*100. * icemask_cat + 1.e20 * (1.-icemask_cat) </field> |
|---|
| 245 | |
|---|
| 246 | </field_group> |
|---|
| 247 | |
|---|
| 248 | <!-- scalar variables --> |
|---|
| 249 | <field_group id="SBC_scalar" grid_ref="grid_T_2D" > |
|---|
| 250 | <!-- available with ln_icediaout --> |
|---|
| 251 | <field id="ibgfrcvoltop" long_name="global mean ice/snow forcing at interface ice/snow-atm (volume equivalent ocean volume)" unit="km3" /> |
|---|
| 252 | <field id="ibgfrcvolbot" long_name="global mean ice/snow forcing at interface ice/snow-ocean (volume equivalent ocean volume)" unit="km3" /> |
|---|
| 253 | <field id="ibgfrctemtop" long_name="global mean heat on top of ice/snw/ocean-atm " unit="1e20J" /> |
|---|
| 254 | <field id="ibgfrctembot" long_name="global mean heat below ice (on top of ocean) " unit="1e20J" /> |
|---|
| 255 | <field id="ibgfrcsal" long_name="global mean ice/snow forcing (salt equivalent ocean volume)" unit="pss*km3" /> |
|---|
| 256 | <field id="ibgfrchfxtop" long_name="global mean heat flux on top of ice/snw/ocean-atm " unit="W/m2" /> |
|---|
| 257 | <field id="ibgfrchfxbot" long_name="global mean heat flux below ice (on top of ocean) " unit="W/m2" /> |
|---|
| 258 | |
|---|
| 259 | <field id="ibgvolume" long_name="drift in ice/snow volume (equivalent ocean volume)" unit="km3" /> |
|---|
| 260 | <field id="ibgsaltco" long_name="drift in ice salt content (equivalent ocean volume)" unit="pss*km3" /> |
|---|
| 261 | <field id="ibgheatco" long_name="drift in ice/snow heat content" unit="1e20J" /> |
|---|
| 262 | <field id="ibgheatfx" long_name="drift in ice/snow heat flux" unit="W/m2" /> |
|---|
| 263 | |
|---|
| 264 | <field id="ibgvol_tot" long_name="global mean ice volume" unit="km3" /> |
|---|
| 265 | <field id="sbgvol_tot" long_name="global mean snow volume" unit="km3" /> |
|---|
| 266 | <field id="ibgarea_tot" long_name="global mean ice area" unit="km2" /> |
|---|
| 267 | <field id="ibgsalt_tot" long_name="global mean ice salt content" unit="1e-3*km3" /> |
|---|
| 268 | <field id="ibgheat_tot" long_name="global mean ice heat content" unit="1e20J" /> |
|---|
| 269 | <field id="sbgheat_tot" long_name="global mean snow heat content" unit="1e20J" /> |
|---|
| 270 | |
|---|
| 271 | <field id="NH_iceextt" long_name="Sea ice extent North" standard_name="sea_ice_extent_n" unit="1e6_km2" /> |
|---|
| 272 | <field id="SH_iceextt" long_name="Sea ice extent South" standard_name="sea_ice_extent_s" unit="1e6_km2" /> |
|---|
| 273 | <field id="NH_icevolu" long_name="Sea ice volume North" standard_name="sea_ice_volume_n" unit="1e3_km3" /> |
|---|
| 274 | <field id="SH_icevolu" long_name="Sea ice volume South" standard_name="sea_ice_volume_s" unit="1e3_km3" /> |
|---|
| 275 | <field id="NH_icearea" long_name="Sea ice area North" standard_name="sea_ice_area_n" unit="1e6_km2" /> |
|---|
| 276 | <field id="SH_icearea" long_name="Sea ice area South" standard_name="sea_ice_area_s" unit="1e6_km2" /> |
|---|
| 277 | |
|---|
| 278 | <field id="strait_mifl" long_name="Sea ice mass flux through straits" standard_name="sea_ice_mass_transport_across_line" unit="kg/s" grid_ref="grid_4strait" /> |
|---|
| 279 | <field id="strait_arfl" long_name="Sea ice area flux through straits" standard_name="sea_ice_area_transport_across_line" unit="m2/s" grid_ref="grid_4strait" /> |
|---|
| 280 | <field id="strait_msfl" long_name="Sea ice snow flux through straits" standard_name="snow_mass_transport_across_line" unit="kg/s" grid_ref="grid_4strait" /> |
|---|
| 281 | |
|---|
| 282 | </field_group> |
|---|
| 283 | |
|---|
| 284 | <!-- |
|---|
| 285 | ============================================================================================================ |
|---|
| 286 | --> |
|---|
| 287 | <!-- output variables for my configuration (example) --> |
|---|
| 288 | |
|---|
| 289 | <field_group id="myvarICE" > |
|---|
| 290 | <field field_ref="icethic" name="sithic" /> |
|---|
| 291 | <field field_ref="icevolu" name="sivolu" /> |
|---|
| 292 | <field field_ref="iceconc" name="siconc" /> |
|---|
| 293 | </field_group> |
|---|
| 294 | |
|---|
| 295 | <field_group id="ICE_globalbudget"> |
|---|
| 296 | |
|---|
| 297 | <field field_ref="ibgvol_tot" grid_ref="grid_1point" name="ibgvol_tot" /> |
|---|
| 298 | <field field_ref="sbgvol_tot" grid_ref="grid_1point" name="sbgvol_tot" /> |
|---|
| 299 | <field field_ref="ibgarea_tot" grid_ref="grid_1point" name="ibgarea_tot" /> |
|---|
| 300 | <field field_ref="ibgsalt_tot" grid_ref="grid_1point" name="ibgsalt_tot" /> |
|---|
| 301 | <field field_ref="ibgheat_tot" grid_ref="grid_1point" name="ibgheat_tot" /> |
|---|
| 302 | <field field_ref="sbgheat_tot" grid_ref="grid_1point" name="sbgheat_tot" /> |
|---|
| 303 | |
|---|
| 304 | <field field_ref="ibgvolume" grid_ref="grid_1point" name="ibgvolume" /> |
|---|
| 305 | <field field_ref="ibgsaltco" grid_ref="grid_1point" name="ibgsaltco" /> |
|---|
| 306 | <field field_ref="ibgheatco" grid_ref="grid_1point" name="ibgheatco" /> |
|---|
| 307 | <field field_ref="ibgheatfx" grid_ref="grid_1point" name="ibgheatfx" /> |
|---|
| 308 | |
|---|
| 309 | <field field_ref="ibgfrcvoltop" grid_ref="grid_1point" name="ibgfrcvoltop" /> |
|---|
| 310 | <field field_ref="ibgfrcvolbot" grid_ref="grid_1point" name="ibgfrcvolbot" /> |
|---|
| 311 | <field field_ref="ibgfrctemtop" grid_ref="grid_1point" name="ibgfrctemtop" /> |
|---|
| 312 | <field field_ref="ibgfrctembot" grid_ref="grid_1point" name="ibgfrctembot" /> |
|---|
| 313 | <field field_ref="ibgfrcsal" grid_ref="grid_1point" name="ibgfrcsal" /> |
|---|
| 314 | <field field_ref="ibgfrchfxtop" grid_ref="grid_1point" name="ibgfrchfxtop" /> |
|---|
| 315 | <field field_ref="ibgfrchfxbot" grid_ref="grid_1point" name="ibgfrchfxbot" /> |
|---|
| 316 | |
|---|
| 317 | </field_group> |
|---|
| 318 | |
|---|
| 319 | |
|---|
| 320 | <!--============================--> |
|---|
| 321 | <!-- SIMIP sea ice field groups --> |
|---|
| 322 | <!-- Notz et al 2016 --> |
|---|
| 323 | <!--============================--> |
|---|
| 324 | |
|---|
| 325 | <!-- SIMIP monthly scalar variables --> |
|---|
| 326 | <field_group id="SImon_scalars"> |
|---|
| 327 | <!-- Integrated quantities --> |
|---|
| 328 | <field field_ref="NH_iceextt" grid_ref="grid_1point" name="siextentn" /> |
|---|
| 329 | <field field_ref="SH_iceextt" grid_ref="grid_1point" name="siextents" /> |
|---|
| 330 | <field field_ref="NH_icevolu" grid_ref="grid_1point" name="sivoln" /> |
|---|
| 331 | <field field_ref="SH_icevolu" grid_ref="grid_1point" name="sivols" /> |
|---|
| 332 | <field field_ref="NH_icearea" grid_ref="grid_1point" name="siarean" /> |
|---|
| 333 | <field field_ref="SH_icearea" grid_ref="grid_1point" name="siareas" /> |
|---|
| 334 | </field_group> |
|---|
| 335 | |
|---|
| 336 | <!-- SIMIP daily fields --> |
|---|
| 337 | <field_group id="SIday_fields"> |
|---|
| 338 | <field field_ref="icepres" name="sitimefrac" /> |
|---|
| 339 | <field field_ref="iceconc_pct" name="siconc" /> |
|---|
| 340 | <field field_ref="icethic_cmip" name="sithick" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 341 | <field field_ref="snwthic_cmip" name="sisnthick" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 342 | <field field_ref="icettop_cmip" name="sitemptop" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 343 | <field field_ref="uice_cmip" name="siu" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 344 | <field field_ref="vice_cmip" name="siv" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 345 | <field field_ref="icevel_cmip" name="sispeed" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 346 | </field_group> |
|---|
| 347 | |
|---|
| 348 | <!-- SIMIP monthly fields --> |
|---|
| 349 | <field_group id="SImon_fields"> |
|---|
| 350 | <!-- Sea-ice state variables --> |
|---|
| 351 | <field field_ref="icepres" name="sitimefrac" /> |
|---|
| 352 | <field field_ref="iceconc_pct" name="siconc" /> |
|---|
| 353 | <field field_ref="icemass_cmip" name="simass" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 354 | <field field_ref="icethic_cmip" name="sithick" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 355 | <field field_ref="icevolu" name="sivol" /> |
|---|
| 356 | <field field_ref="snwmass_cmip" name="sisnmass" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 357 | <field field_ref="snwthic_cmip" name="sisnthick" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 358 | |
|---|
| 359 | <!-- category-dependent fields --> |
|---|
| 360 | <field field_ref="iceconc_cat_pct_cmip" name="siitdconc" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 361 | <field field_ref="icethic_cat_cmip" name="siitdthick" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 362 | <field field_ref="snwthic_cat_cmip" name="siitdsnthick" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 363 | |
|---|
| 364 | <!-- additional state variables--> |
|---|
| 365 | <field field_ref="icettop_cmip" name="sitemptop" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 366 | <field field_ref="icetsni_cmip" name="sitempsnic" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 367 | <field field_ref="icetbot_cmip" name="sitempbot" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 368 | <field field_ref="iceage_cmip" name="siage" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 369 | <field field_ref="icesalm" name="sisaltmass" /> |
|---|
| 370 | <field field_ref="icesalt_cmip" name="sisali" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 371 | <field field_ref="icefrb_cmip" name="sifb" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 372 | <field field_ref="icehc_cmip" name="sihc" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 373 | <field field_ref="snwhc_cmip" name="sisnhc" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 374 | |
|---|
| 375 | <!-- freshwater fluxes --> |
|---|
| 376 | <field field_ref="vfxice_cmip" name="siflfwbot" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 377 | <field field_ref="vfxsum_cmip" name="siflfwdrain" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 378 | |
|---|
| 379 | <!-- area balance --> |
|---|
| 380 | <field field_ref="afxthd" name="sidconcth" /> |
|---|
| 381 | <field field_ref="afxdyn" name="sidconcdyn" /> |
|---|
| 382 | |
|---|
| 383 | <!-- mass balance --> |
|---|
| 384 | <field field_ref="dmithd" name="sidmassth" /> |
|---|
| 385 | <field field_ref="dmidyn" name="sidmassdyn" /> |
|---|
| 386 | <field field_ref="dmiopw" name="sidmassgrowthwat" /> |
|---|
| 387 | <field field_ref="dmibog" name="sidmassgrowthbot" /> |
|---|
| 388 | <field field_ref="dmisni" name="sidmasssi" /> |
|---|
| 389 | <field field_ref="dmisub" name="sidmassevapsubl" /> |
|---|
| 390 | <field field_ref="dmisum" name="sidmassmelttop" /> |
|---|
| 391 | <field field_ref="dmibom" name="sidmassmeltbot" /> |
|---|
| 392 | <field field_ref="dmsspr" name="sndmasssnf" /> |
|---|
| 393 | <field field_ref="dmsmel" name="sndmassmelt" /> |
|---|
| 394 | <field field_ref="dmssub" name="sndmasssubl" /> |
|---|
| 395 | <field field_ref="dmsdyn" name="sndmassdyn" /> |
|---|
| 396 | <field field_ref="dmsssi" name="sndmasssi" /> |
|---|
| 397 | |
|---|
| 398 | <!-- heat balance --> |
|---|
| 399 | <field field_ref="hfxsensib" name="siflsensupbot" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 400 | <field field_ref="hfxcndtop" name="siflcondtop" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 401 | <field field_ref="hfxcndbot" name="siflcondbot" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 402 | |
|---|
| 403 | <!-- salt balance --> |
|---|
| 404 | <field field_ref="sfxice_cmip" name="siflsaltbot" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 405 | |
|---|
| 406 | <!-- sea-ice dynamics --> |
|---|
| 407 | <field field_ref="uice_cmip" name="siu" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 408 | <field field_ref="vice_cmip" name="siv" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 409 | <field field_ref="icevel_cmip" name="sispeed" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 410 | <field field_ref="utau_ai_cmip" name="sistrxdtop" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 411 | <field field_ref="vtau_ai_cmip" name="sistrydtop" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 412 | <field field_ref="utau_oi" name="sistrxubot" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 413 | <field field_ref="vtau_oi" name="sistryubot" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 414 | <field field_ref="icestr" name="sicompstren" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 415 | <field field_ref="dssh_dx" name="siforcetiltx" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 416 | <field field_ref="dssh_dy" name="siforcetilty" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 417 | <field field_ref="corstrx" name="siforcecoriolx" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 418 | <field field_ref="corstry" name="siforcecorioly" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 419 | <field field_ref="intstrx" name="siforceintstrx" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 420 | <field field_ref="intstry" name="siforceintstry" default_value="1.0e20" detect_missing_value="true" operation="average" /> |
|---|
| 421 | <field field_ref="xmtrptot" name="sidmasstranx" /> |
|---|
| 422 | <field field_ref="ymtrptot" name="sidmasstrany" /> |
|---|
| 423 | <field field_ref="normstr" name="sistresave" default_value="1.0e20" detect_missing_value="true" operation="instant" /> |
|---|
| 424 | <field field_ref="sheastr" name="sistremax" default_value="1.0e20" detect_missing_value="true" operation="instant" /> |
|---|
| 425 | <field field_ref="icediv" name="sidivvel" default_value="1.0e20" detect_missing_value="true" operation="instant" /> |
|---|
| 426 | <field field_ref="iceshe" name="sishevel" default_value="1.0e20" detect_missing_value="true" operation="instant" /> |
|---|
| 427 | |
|---|
| 428 | <!-- sea ice fluxes across straits: 2D arrays to be post-processed --> |
|---|
| 429 | <field field_ref="xmtrpice" name="simassacrossline_x" /> |
|---|
| 430 | <field field_ref="ymtrpice" name="simassacrossline_y" /> |
|---|
| 431 | <field field_ref="xmtrpsnw" name="snmassacrossline_x" /> |
|---|
| 432 | <field field_ref="ymtrpsnw" name="snmassacrossline_y" /> |
|---|
| 433 | <field field_ref="xatrp" name="siareaacrossline_x" /> |
|---|
| 434 | <field field_ref="yatrp" name="siareaacrossline_y" /> |
|---|
| 435 | |
|---|
| 436 | </field_group> |
|---|
| 437 | |
|---|
| 438 | </field_definition> |
|---|
