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C $Header: /u/gcmpack/MITgcm/pkg/thsice/THSICE_PARAMS.h,v 1.16 2012/08/01 18:20:55 jmc Exp $ |
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C $Name: $ |
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|
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#ifdef ALLOW_THSICE |
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C *==========================================================* |
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C | THSICE_PARAMS.h |
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C | o Header file for Therm_SeaIce package parameters: |
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C | - basic parameter ( I/O frequency, etc ...) |
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C | - physical constants (used in therm_SeaIce pkg) |
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C *==========================================================* |
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|
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C---------------------------------------------------------------------------- |
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C.. Common blocks for almost everything that the sea ice model passes around. |
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C---------------------------------------------------------------------------- |
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|
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C-- COMMON / THSICE_PHYSPAR_R / physical (real) parameter |
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C.. densities |
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C rhos :: density of snow [kg/m^3] |
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C rhoi :: density of ice [kg/m^3] |
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C rhosw :: density of seawater [kg/m^3] |
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C rhofw :: density of fresh water [kg/m^3] |
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C floodFac :: flooding factor = (rhosw-rhoi)/rhos [dimensionless] |
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C.. specific heats |
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C cpIce :: specific heat of fresh ice [J/kg/K] |
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C cpWater :: specific heat of water [J/kg/K] |
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C .. thermal conductivity. QQ check units |
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C kIce :: thermal conductivity of pure ice [W/m/K] |
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C kSnow :: thermal conductivity of snow [W/m/K] |
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C .. heat transfer coefficient |
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C bMeltCoef :: base-melting heat transfer coefficient |
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C (between ice & water) [no unit] |
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C .. latent heat |
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C Lfresh :: latent heat of melting of pure ice [J/kg] |
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C .. Enthalpy |
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C qsnow :: snow enthalpy [J/kg] |
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C .. Albedo |
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C albColdSnow :: albedo of cold (=dry) new snow (Tsfc < tempSnowAlb) |
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C albWarmSnow :: albedo of warm (=wet) new snow (Tsfc = 0) |
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C tempSnowAlb :: temperature transition from ColdSnow to WarmSnow Alb. [oC] |
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C albOldSnow :: albedo of old snow (snowAge > 35.d) |
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C albIceMax :: max albedo of bare ice (thick ice) |
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C albIceMin :: minimum ice albedo (very thin ice) |
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C hAlbIce :: ice thickness for albedo transition: thin/thick ice albedo |
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C hAlbSnow :: snow thickness for albedo transition: snow/ice albedo |
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C hNewSnowAge :: new snow thickness that refresh the snow-age (by 1/e) |
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C snowAgTime :: snow aging time scale [s] |
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C .. Solar parameters |
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C i0swFrac :: fraction of penetrating solar rad |
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C ksolar :: bulk solar abs coeff of sea ice [m^-1] |
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C dhSnowLin :: half slope of linear distribution of snow thickness within |
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C the grid-cell (from hSnow-dhSnow to hSnow+dhSnow, if full |
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C ice & snow cover) [m] ; (only used for SW radiation). |
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C .. Salinity |
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C saltIce :: salinity of ice [g/kg] |
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C S_winton :: Winton salinity of ice [g/kg] |
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C .. melting |
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C Tf0kel :: Freezing temp of fresh water in Kelvin = 273.15 |
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C mu_Tf :: linear dependance of melting temperature on Salinity [oC/psu] |
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C Tf(sea-water) = -mu_Tf * S |
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C Tmlt1 :: Winton melting temperature: Tmlt1 = -mu_Tf * S_winton |
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C Terrmax :: Temperature convergence criteria [oC] |
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C .. Min/Max |
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C hIceMin :: Minimum ice thickness [m] |
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C hiMax :: Maximum ice thickness [m] |
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C hsMax :: Maximum snow thickness [m] |
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C .. for fractional ice |
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C iceMaskMax :: maximum Ice fraction (=1 for no fractional ice) |
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C iceMaskMin :: mimimum Ice fraction (=1 for no fractional ice) |
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C fracEnFreez :: fraction of energy going to lateral freezing (vs height increase) |
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C fracEnMelt :: fraction of energy going to lateral melting (vs height decrease) |
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C (=0 for no fract. ice) |
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C hThinIce :: ice height above which fracEnMelt/Freez are applied [m] |
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C (=hIceMin for no fractional ice) |
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C hThickIce :: ice height below which fracEnMelt/Freez are applied [m] |
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C (=large for no fractional ice) |
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C hNewIceMax :: new ice maximum thickness [m] |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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COMMON / THSICE_PHYSPAR_R / |
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& rhos, rhoi, rhosw, rhofw, floodFac, |
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& cpIce, cpWater, |
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& kIce, kSnow, |
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& bMeltCoef, Lfresh, qsnow, |
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& albColdSnow, albWarmSnow, tempSnowAlb, |
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& albOldSnow, hNewSnowAge, snowAgTime, |
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& albIceMax, albIceMin, hAlbIce, hAlbSnow, |
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& i0swFrac, ksolar, dhSnowLin, |
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& saltIce, S_winton, mu_Tf, |
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& Tf0kel, Tmlt1, Terrmax, |
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& hIceMin, hiMax, hsMax, |
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& iceMaskMax, iceMaskMin, |
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& fracEnMelt, fracEnFreez, |
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& hThinIce, hThickIce, hNewIceMax |
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|
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_RL rhos |
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_RL rhoi |
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_RL rhosw |
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_RL rhofw |
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_RL floodFac |
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_RL cpIce |
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_RL cpWater |
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_RL kIce |
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_RL kSnow |
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_RL bMeltCoef |
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_RL Lfresh |
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_RL qsnow |
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_RL albColdSnow |
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_RL albWarmSnow |
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_RL tempSnowAlb |
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_RL albOldSnow |
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_RL hNewSnowAge |
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_RL snowAgTime |
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_RL albIceMax |
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_RL albIceMin |
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_RL hAlbIce |
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_RL hAlbSnow |
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_RL i0swFrac |
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_RL ksolar |
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_RL dhSnowLin |
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_RL saltIce |
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_RL S_winton |
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_RL mu_Tf |
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_RL Tf0kel |
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_RL Tmlt1 |
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_RL Terrmax |
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_RL hIceMin |
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_RL hiMax |
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_RL hsMax |
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_RL iceMaskMax |
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_RL iceMaskMin |
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_RL fracEnMelt |
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_RL fracEnFreez |
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_RL hThinIce |
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_RL hThickIce |
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_RL hNewIceMax |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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C-- COMMON / THSICE_PAR_L / ice model (logical) parameters |
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C stepFwd_oceMxL :: step forward mixed-layer T & S (slab-ocean) |
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C thSIce_skipThermo :: by-pass seaice thermodynamics |
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C thSIce_calc_albNIR :: calculate Near Infra-Red Albedo |
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C thSIce_tave_mdsio :: write TimeAverage output using MDSIO |
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C thSIce_snapshot_mdsio :: write snap-shot output using MDSIO |
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C thSIce_mon_stdio :: write monitor to std-outp |
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C thSIce_tave_mnc :: write TimeAverage output using MNC |
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C thSIce_snapshot_mnc :: write snap-shot output using MNC |
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C thSIce_mon_mnc :: write monitor to netcdf file |
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C thSIce_pickup_read_mnc :: pickup read w/ MNC |
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C thSIce_pickup_write_mnc :: pickup write w/ MNC |
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C thSIce_pickup_write_mdsio :: pickup write w/ MDSIO |
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COMMON / THSICE_PAR_L / |
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& stepFwd_oceMxL, thSIce_skipThermo, |
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& thSIce_calc_albNIR, |
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& thSIce_tave_mdsio, thSIce_snapshot_mdsio, thSIce_mon_stdio, |
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& thSIce_tave_mnc, thSIce_snapshot_mnc, thSIce_mon_mnc, |
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& thSIce_pickup_read_mnc, |
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& thSIce_pickup_write_mdsio, |
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& thSIce_pickup_write_mnc |
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|
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LOGICAL stepFwd_oceMxL |
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LOGICAL thSIce_skipThermo |
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LOGICAL thSIce_calc_albNIR |
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LOGICAL thSIce_tave_mdsio, thSIce_snapshot_mdsio, thSIce_mon_stdio |
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LOGICAL thSIce_tave_mnc, thSIce_snapshot_mnc, thSIce_mon_mnc |
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LOGICAL thSIce_pickup_read_mnc |
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LOGICAL thSIce_pickup_write_mdsio |
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LOGICAL thSIce_pickup_write_mnc |
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|
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C-- COMMON / THSICE_PAR_I / ice model (integer) parameters |
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C startIceModel :: =1 : start ice model at nIter0 ; =0 : use pickup files |
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C :: -1 : start from a small pickup (without Mix.Layer) |
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C nitMaxTsf :: maximum Nb of iter to find Surface Temp (Trsf) |
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C thSIceAdvScheme :: thSIce Advection scheme selector |
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C thSIceBalanceAtmFW :: select balancing Fresh-Water flux from Atm+Land |
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C :: =0 : none ; =1 : uniform ; =2 : scaled by Precip |
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COMMON / THSICE_PAR_I / |
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& startIceModel, nitMaxTsf, thSIceAdvScheme, thSIceBalanceAtmFW |
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|
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INTEGER startIceModel |
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INTEGER nitMaxTsf |
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INTEGER thSIceAdvScheme |
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INTEGER thSIceBalanceAtmFW |
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|
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C-- COMMON / THSICE_PAR_R / ice model (real) parameters |
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C thSIce_deltaT :: ice model time-step, seaice thicken/extend [s] |
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C thSIce_dtTemp :: ice model time-step, solve4temp [s] |
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C ocean_deltaT :: ocean mixed-layer time-step [s] |
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C tauRelax_MxL :: Relaxation time scale for MixLayer T [s] |
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C tauRelax_MxL_salt :: Relaxation time scale for MixLayer S [s] |
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C hMxL_default :: default value for ocean MixLayer thickness [m] |
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C sMxL_default :: default value for salinity in MixLayer [psu] |
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C vMxL_default :: default value for ocean current velocity in MxL [m/s] |
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C thSIce_diffK :: thickness (horizontal) diffusivity [m^2/s] |
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C stressReduction :: reduction factor for wind-stress under sea-ice [0-1] |
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C thSIce_taveFreq :: Frequency^-1 for time-Aver. output [s] |
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C thSIce_diagFreq :: Frequency^-1 for diagnostic output [s] |
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C thSIce_monFreq :: Frequency^-1 for monitor output [s] |
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COMMON / THSICE_PAR_R / |
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& thSIce_deltaT, thSIce_dtTemp, ocean_deltaT, |
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& tauRelax_MxL, tauRelax_MxL_salt, |
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& hMxL_default, sMxL_default, vMxL_default, |
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& thSIce_diffK, stressReduction, |
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& thSIce_taveFreq, thSIce_diagFreq, thSIce_monFreq |
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|
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_RL thSIce_deltaT, thSIce_dtTemp, ocean_deltaT |
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_RL tauRelax_MxL, tauRelax_MxL_salt |
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_RL hMxL_default, sMxL_default, vMxL_default |
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_RL thSIce_diffK, stressReduction |
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_RL thSIce_taveFreq, thSIce_diagFreq, thSIce_monFreq |
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|
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C-- COMMON / THSICE_PAR_C / ice model (character) parameters |
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C thSIceFract_InitFile :: File name for initial ice fraction |
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C thSIceThick_InitFile :: File name for initial ice thickness |
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C thSIceSnowH_InitFile :: File name for initial snow thickness |
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C thSIceSnowA_InitFile :: File name for initial snow Age |
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C thSIceEnthp_InitFile :: File name for initial ice enthalpy |
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C thSIceTsurf_InitFile :: File name for initial surf. temp |
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COMMON / THSICE_PAR_C / |
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& thSIceFract_InitFile, |
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& thSIceThick_InitFile, |
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& thSIceSnowH_InitFile, |
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& thSIceSnowA_InitFile, |
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& thSIceEnthp_InitFile, |
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& thSIceTsurf_InitFile |
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CHARACTER*(MAX_LEN_FNAM) thSIceFract_InitFile |
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CHARACTER*(MAX_LEN_FNAM) thSIceThick_InitFile |
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CHARACTER*(MAX_LEN_FNAM) thSIceSnowH_InitFile |
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CHARACTER*(MAX_LEN_FNAM) thSIceSnowA_InitFile |
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CHARACTER*(MAX_LEN_FNAM) thSIceEnthp_InitFile |
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CHARACTER*(MAX_LEN_FNAM) thSIceTsurf_InitFile |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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#endif /* ALLOW_THSICE */ |
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|
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CEH3 ;;; Local Variables: *** |
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CEH3 ;;; mode:fortran *** |
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CEH3 ;;; End: *** |
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