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C $Header: /u/gcmpack/MITgcm/pkg/thsice/THSICE_PARAMS.h,v 1.2 2003/12/31 17:44:32 jmc Exp $ |
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C $Name: $ |
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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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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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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 rhoiw :: ocean-ice density difference (kg/m^3) |
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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 transcoef :: transfer coef between ice and water (unitless) |
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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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jmc |
1.2 |
C .. Enthalpy |
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jmc |
1.1 |
C qsnow :: snow enthalpy (J/kg) |
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C .. Albedo |
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jmc |
1.2 |
C albColdSnow :: albedo of cold (=dry) new snow (Tsfc < -10) |
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C albWarmSnow :: albedo of warm (=wet) new snow (Tsfc = 0) |
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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 .. Solar parameters |
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jmc |
1.1 |
C i0 :: 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 .. Salinity |
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C saltice :: salinity of ice (o/oo) |
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C S_winton :: winton salinity of ice (o/oo) |
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C mu_Tf :: Tf:brine salinity ratio (C/ppt) |
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C .. melting |
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C Tf0kel :: Freezing temp of fresh ice in Kelvin = 273.15 |
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C Tmlt1 :: melting temp; depends on S (C) |
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C .. Min/Max |
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C himin :: minimum thickness for ice (m) |
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C Terrmax :: temperature convergence precision (C) |
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C hiMax :: Maximum thickness for ice (m) |
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C hsMax :: Maximum thickness for snow (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 himin0 :: minimum ice height (=himin for no fractional ice) |
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C frac_energy:: fraction of energy going to melting (=0 for no fract. ice) |
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C hihig :: ice height above which freezing only occurs over open ocean |
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C (=large for no fractional ice) |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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COMMON / THSICE_PHYSPAR_R / |
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& rhos, rhoi, rhosw, rhofw, rhoiw, |
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& cpice, cpwater, |
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& kice, ksnow, |
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& transcoef, Lfresh, qsnow, |
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jmc |
1.2 |
& albColdSnow, albWarmSnow, albOldSnow, hNewSnowAge, |
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& albIceMax, albIceMin, hAlbIce, hAlbSnow, |
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jmc |
1.1 |
& i0, ksolar, |
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& saltice, S_winton, mu_Tf, |
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& Tf0kel, Tmlt1, |
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& himin, Terrmax, hiMax, hsMax, |
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& iceMaskmax, iceMaskmin, himin0, |
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& frac_energy, hihig |
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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 rhoiw |
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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 transcoef |
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_RL Lfresh |
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_RL qsnow |
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jmc |
1.2 |
_RL albColdSnow |
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_RL albWarmSnow |
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_RL albOldSnow |
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_RL hNewSnowAge |
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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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jmc |
1.1 |
_RL i0 |
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_RL ksolar |
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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 himin |
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_RL Terrmax |
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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 himin0 |
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_RL frac_energy |
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_RL hihig |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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jmc |
1.3 |
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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COMMON / THSICE_PAR_L / |
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& stepFwd_oceMxL |
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LOGICAL stepFwd_oceMxL |
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jmc |
1.1 |
C-- COMMON / THSICE_PAR_I / ice model (integer) parameters |
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jmc |
1.3 |
c startIceModel :: =1 : start ice model at nIter0 ; =0 : use pickup files |
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c nitMaxTsf :: maximum Nb of iter to find Surface Temp (Trsf) |
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jmc |
1.1 |
COMMON / THSICE_PAR_I / |
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& startIceModel, nitMaxTsf |
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INTEGER startIceModel |
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INTEGER nitMaxTsf |
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C-- COMMON / THSICE_PAR_R / ice model (real) parameters |
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jmc |
1.3 |
C thSIce_deltaT :: ice model time-step |
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C ocean_deltaT :: ocean mixed-layer time-step |
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C tauRelax_MxL :: Relaxation time scale for MixLayer T & 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 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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jmc |
1.1 |
COMMON / THSICE_PAR_R / |
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jmc |
1.3 |
& thSIce_deltaT, ocean_deltaT, tauRelax_MxL, |
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& hMxL_default, sMxL_default, vMxL_default, |
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jmc |
1.1 |
& stressReduction, |
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& thSIce_taveFreq, thSIce_diagFreq, thSIce_monFreq |
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jmc |
1.3 |
_RL thSIce_deltaT, ocean_deltaT, tauRelax_MxL |
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_RL hMxL_default, sMxL_default, vMxL_default |
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jmc |
1.1 |
_RL stressReduction |
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_RL thSIce_taveFreq, thSIce_diagFreq, thSIce_monFreq |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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#endif /* ALLOW_THSICE */ |
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