C $Header: /u/gcmpack/MITgcm/pkg/thsice/THSICE_PARAMS.h,v 1.5 2005/06/24 04:36:54 edhill Exp $
C $Name: $
#ifdef ALLOW_THSICE
C *==========================================================*
C | THSICE_PARAMS.h
C | o Header file for Therm_SeaIce package parameters:
C | - basic parameter ( I/O frequency, etc ...)
C | - physical constants (used in therm_SeaIce pkg)
C *==========================================================*
C----------------------------------------------------------------------------
C.. Common blocks for almost everything that the sea ice model passes around.
C----------------------------------------------------------------------------
C-- COMMON / THSICE_PHYSPAR_R / physical (real) parameter
C.. densities
C rhos :: density of snow (kg/m^3)
C rhoi :: density of ice (kg/m^3)
C rhosw :: density of seawater (kg/m^3)
C rhofw :: density of fresh water (kg/m^3)
C rhoiw :: ocean-ice density difference (kg/m^3)
C.. specific heats
C cpice :: specific heat of fresh ice (J/kg/K)
C cpwater :: specific heat of water (J/kg/K)
C .. thermal conductivity. QQ check units
C kice :: thermal conductivity of pure ice (W/m/K)
C ksnow :: thermal conductivity of snow (W/m/K)
C .. heat transfer coefficient
C transcoef :: transfer coef between ice and water (unitless)
C .. latent heat
C Lfresh :: latent heat of melting of pure ice (J/kg)
C .. Enthalpy
C qsnow :: snow enthalpy (J/kg)
C .. Albedo
C albColdSnow :: albedo of cold (=dry) new snow (Tsfc < -10)
C albWarmSnow :: albedo of warm (=wet) new snow (Tsfc = 0)
C albOldSnow :: albedo of old snow (snowAge > 35.d)
C albIceMax :: max albedo of bare ice (thick ice)
C albIceMin :: minimum ice albedo (very thin ice)
C hAlbIce :: ice thickness for albedo transition: thin/thick ice albedo
C hAlbSnow :: snow thickness for albedo transition: snow/ice albedo
C hNewSnowAge :: new snow thickness that refresh the snow-age (by 1/e)
C .. Solar parameters
C i0 :: fraction of penetrating solar rad
C ksolar :: bulk solar abs coeff of sea ice (m-1)
C .. Salinity
C saltice :: salinity of ice (o/oo)
C S_winton :: winton salinity of ice (o/oo)
C mu_Tf :: Tf:brine salinity ratio (C/ppt)
C .. melting
C Tf0kel :: Freezing temp of fresh ice in Kelvin = 273.15
C Tmlt1 :: melting temp; depends on S (C)
C .. Min/Max
C himin :: minimum thickness for ice (m)
C Terrmax :: temperature convergence precision (C)
C hiMax :: Maximum thickness for ice (m)
C hsMax :: Maximum thickness for snow (m)
C .. for fractional ice
C iceMaskmax :: maximum Ice fraction (=1 for no fractional ice)
C iceMaskmin :: mimimum Ice fraction (=1 for no fractional ice)
C himin0 :: minimum ice height (=himin for no fractional ice)
C frac_energy:: fraction of energy going to melting (=0 for no fract. ice)
C hihig :: ice height above which freezing only occurs over open ocean
C (=large for no fractional ice)
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
COMMON / THSICE_PHYSPAR_R /
& rhos, rhoi, rhosw, rhofw, rhoiw,
& cpice, cpwater,
& kice, ksnow,
& transcoef, Lfresh, qsnow,
& albColdSnow, albWarmSnow, albOldSnow, hNewSnowAge,
& albIceMax, albIceMin, hAlbIce, hAlbSnow,
& i0, ksolar,
& saltice, S_winton, mu_Tf,
& Tf0kel, Tmlt1,
& himin, Terrmax, hiMax, hsMax,
& iceMaskmax, iceMaskmin, himin0,
& frac_energy, hihig
_RL rhos
_RL rhoi
_RL rhosw
_RL rhofw
_RL rhoiw
_RL cpice
_RL cpwater
_RL kice
_RL ksnow
_RL transcoef
_RL Lfresh
_RL qsnow
_RL albColdSnow
_RL albWarmSnow
_RL albOldSnow
_RL hNewSnowAge
_RL albIceMax
_RL albIceMin
_RL hAlbIce
_RL hAlbSnow
_RL i0
_RL ksolar
_RL saltice
_RL S_winton
_RL mu_Tf
_RL Tf0kel
_RL Tmlt1
_RL himin
_RL Terrmax
_RL hiMax
_RL hsMax
_RL iceMaskmax
_RL iceMaskmin
_RL himin0
_RL frac_energy
_RL hihig
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
C-- COMMON / THSICE_PAR_L / ice model (logical) parameters
C stepFwd_oceMxL :: step forward mixed-layer T & S (slab-ocean)
C thSIce_tave_mdsio :: write TimeAverage output using MDSIO
C thSIce_snapshot_mdsio :: write snap-shot output using MDSIO
C thSIce_mon_stdio :: write monitor to std-outp
C thSIce_tave_mnc :: write TimeAverage output using MNC
C thSIce_snapshot_mnc :: write snap-shot output using MNC
C thSIce_mon_mnc :: write monitor to netcdf file
C thSIce_pickup_read_mnc :: pickup read w/ MNC
C thSIce_pickup_write_mnc :: pickup write w/ MNC
C thSIce_pickup_write_mdsio :: pickup write w/ MDSIO
COMMON / THSICE_PAR_L /
& stepFwd_oceMxL,
& thSIce_tave_mdsio, thSIce_snapshot_mdsio, thSIce_mon_stdio,
& thSIce_tave_mnc, thSIce_snapshot_mnc, thSIce_mon_mnc,
& thSIce_pickup_read_mnc,
& thSIce_pickup_write_mdsio,
& thSIce_pickup_write_mnc
LOGICAL stepFwd_oceMxL
LOGICAL thSIce_tave_mdsio, thSIce_snapshot_mdsio, thSIce_mon_stdio
LOGICAL thSIce_tave_mnc, thSIce_snapshot_mnc, thSIce_mon_mnc
LOGICAL thSIce_pickup_read_mnc
LOGICAL thSIce_pickup_write_mdsio
LOGICAL thSIce_pickup_write_mnc
C-- COMMON / THSICE_PAR_I / ice model (integer) parameters
c startIceModel :: =1 : start ice model at nIter0 ; =0 : use pickup files
c :: -1 : start from a small pickup (without Mix.Layer)
c nitMaxTsf :: maximum Nb of iter to find Surface Temp (Trsf)
COMMON / THSICE_PAR_I /
& startIceModel, nitMaxTsf
INTEGER startIceModel
INTEGER nitMaxTsf
C-- COMMON / THSICE_PAR_R / ice model (real) parameters
C thSIce_deltaT :: ice model time-step
C ocean_deltaT :: ocean mixed-layer time-step
C tauRelax_MxL :: Relaxation time scale for MixLayer T & S [s]
C hMxL_default :: default value for ocean MixLayer thickness [m]
C sMxL_default :: default value for salinity in MixLayer [psu]
C vMxL_default :: default value for ocean current velocity in MxL [m/s]
C stressReduction :: reduction factor for wind-stress under sea-ice [0-1]
C thSIce_taveFreq :: Frequency^-1 for time-Aver. output [s]
C thSIce_diagFreq :: Frequency^-1 for diagnostic output [s]
C thSIce_monFreq :: Frequency^-1 for monitor output [s]
COMMON / THSICE_PAR_R /
& thSIce_deltaT, ocean_deltaT, tauRelax_MxL,
& hMxL_default, sMxL_default, vMxL_default,
& stressReduction,
& thSIce_taveFreq, thSIce_diagFreq, thSIce_monFreq
_RL thSIce_deltaT, ocean_deltaT, tauRelax_MxL
_RL hMxL_default, sMxL_default, vMxL_default
_RL stressReduction
_RL thSIce_taveFreq, thSIce_diagFreq, thSIce_monFreq
C-- COMMON / THSICE_PAR_C / ice model (character) parameters
C thSIceFract_InitFile :: File name for initial ice fraction
C thSIceThick_InitFile :: File name for initial ice thickness
C thSIceSnowH_InitFile :: File name for initial snow thickness
C thSIceSnowA_InitFile :: File name for initial snow Age
C thSIceEnthp_InitFile :: File name for initial ice enthalpy
C thSIceTsurf_InitFile :: File name for initial surf. temp
COMMON / THSICE_PAR_C /
& thSIceFract_InitFile,
& thSIceThick_InitFile,
& thSIceSnowH_InitFile,
& thSIceSnowA_InitFile,
& thSIceEnthp_InitFile,
& thSIceTsurf_InitFile
CHARACTER*(MAX_LEN_FNAM) thSIceFract_InitFile
CHARACTER*(MAX_LEN_FNAM) thSIceThick_InitFile
CHARACTER*(MAX_LEN_FNAM) thSIceSnowH_InitFile
CHARACTER*(MAX_LEN_FNAM) thSIceSnowA_InitFile
CHARACTER*(MAX_LEN_FNAM) thSIceEnthp_InitFile
CHARACTER*(MAX_LEN_FNAM) thSIceTsurf_InitFile
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----|
#endif /* ALLOW_THSICE */
CEH3 ;;; Local Variables: ***
CEH3 ;;; mode:fortran ***
CEH3 ;;; End: ***