C $Header: /u/gcmpack/MITgcm/pkg/seaice/SEAICE_PARAMS.h,v 1.32 2006/07/14 12:56:46 mlosch Exp $
C $Name: $
C /==========================================================\
C | SEAICE_PARAMS.h |
C | o Basic parameter header for sea ice model. |
C \==========================================================/
C-- COMMON /SEAICE_PARM_L/ Logical parameters of sea ice model.
C
C SEAICEwriteState - If true, write sea ice state to file;
C default is false.
C SEAICEuseDYNAMICS - If false, do not use dynamics;
C default is to use dynamics.
C SEAICEuseEVP - If false, use Zhangs LSR solver for VP equations
C if true use elastic viscous plastic solver
C SEAICEuseEVPpickup - Set to false in order to start EVP solver with
C non-EVP pickup files. Default is true.
C Applied only if SEAICEuseEVP=.TRUE.
C SEAICEuseFluxForm :: use flux form for advection and diffusion
C of seaice
C useHB87stressCoupling :: use an intergral over ice and ocean surface
C layer to define surface stresses on ocean
C following Hibler and Bryan (1987, JPO)
C SEAICE_clipVelocities :: clip velocities to +/- 40cm/s
C SEAICE_maskRHS :: mask the RHS of the solver where there is no ice
C SEAICE_tave_mdsio :: write TimeAverage output using MDSIO
C SEAICE_dump_mdsio :: write snap-shot output using MDSIO
C SEAICE_mon_stdio :: write monitor to std-outp
C SEAICE_tave_mnc :: write TimeAverage output using MNC
C SEAICE_dump_mnc :: write snap-shot output using MNC
C SEAICE_mon_mnc :: write monitor to netcdf file
LOGICAL
& SEAICEwriteState, SEAICEuseDYNAMICS, SEAICEuseEVP,
& SEAICEuseEVPpickup,
& SEAICEuseFluxForm, useHB87stressCoupling,
& SEAICE_clipVelocities, SEAICE_maskRHS,
& SEAICE_tave_mdsio, SEAICE_dump_mdsio, SEAICE_mon_stdio,
& SEAICE_tave_mnc, SEAICE_dump_mnc, SEAICE_mon_mnc
COMMON /SEAICE_PARM_L/
& SEAICEwriteState, SEAICEuseDYNAMICS, SEAICEuseEVP,
& SEAICEuseEVPpickup,
& SEAICEuseFluxForm, useHB87stressCoupling,
& SEAICE_clipVelocities, SEAICE_maskRHS,
& SEAICE_tave_mdsio, SEAICE_dump_mdsio, SEAICE_mon_stdio,
& SEAICE_tave_mnc, SEAICE_dump_mnc, SEAICE_mon_mnc
C-- COMMON /SEAICE_PARM_I/ Integer valued parameters of sea ice model.
C LAD - time stepping used for sea-ice advection:
C 1 = LEAPFROG, 2 = BACKWARD EULER.
C IMAX_TICE - number of iterations for ice heat budget 10
C SEAICEadvScheme - sets the advection scheme for thickness and area
C SEAICEadvSchArea - sets the advection scheme for area
C SEAICEadvSchHeff - sets the advection scheme for effective thickness
C (=volume) and snow thickness if available
C SEAICEadvSchEnth - sets the advection scheme for sea-ice enthalphy
C SEAICEadvSchSnow - sets the advection scheme for snow on sea-ice
C
INTEGER LAD, IMAX_TICE
INTEGER SEAICEadvScheme
INTEGER SEAICEadvSchArea
INTEGER SEAICEadvSchHeff
INTEGER SEAICEadvSchEnth
INTEGER SEAICEadvSchSnow
COMMON /SEAICE_PARM_I/
& LAD, IMAX_TICE,
& SEAICEadvScheme,
& SEAICEadvSchArea,
& SEAICEadvSchHeff,
& SEAICEadvSchEnth,
& SEAICEadvSchSnow
C-- COMMON /SEAICE_PARM_C/ Character valued sea ice model parameters.
C uwindFile - File containing uwind
C vwindFile - File containing vwind
C atempFile - File containing atemp
C aqhFile - File containing aqh
C lwdownFile - File containing lwdown
C swdownFile - File containing swdown
C precipFile - File containing precip
C evapFile - File containing evap
C runoffFile - File containing runoffF
C HeffFile - File containing initial sea-ice thickness
C !!! NOTE !!! Initial sea-ice thickness can also be set using
C SEAICE_initialHEFF below. But a constant initial condition
C can mean large artificial fluxes of heat and freshwater in
C the surface layer during the first model time step.
C
CHARACTER*(MAX_LEN_FNAM) uwindFile
CHARACTER*(MAX_LEN_FNAM) vwindFile
CHARACTER*(MAX_LEN_FNAM) atempFile
CHARACTER*(MAX_LEN_FNAM) aqhFile
CHARACTER*(MAX_LEN_FNAM) lwdownFile
CHARACTER*(MAX_LEN_FNAM) swdownFile
CHARACTER*(MAX_LEN_FNAM) precipFile
CHARACTER*(MAX_LEN_FNAM) evapFile
CHARACTER*(MAX_LEN_FNAM) runoffFile
CHARACTER*(MAX_LEN_FNAM) HeffFile
COMMON /SEAICE_PARM_C/ uwindFile, vwindFile, atempFile, aqhFile,
& lwdownFile, swdownFile, precipFile, evapFile, runoffFile,
& HeffFile
C-- COMMON /SEAICE_PARM_RL/ Real valued parameters of sea ice model.
C SEAICE_deltaTtherm - Seaice timestep for thermodynamic equations (s)
C SEAICE_deltaTdyn - Seaice timestep for dynamic solver (s)
C SEAICE_deltaTevp - Seaice timestep for EVP solver (s)
C SEAICE_elasticParm - parameter that sets relaxation timescale
C T = SEAICE_elasticParm * SEAICE_deltaTdyn
C SEAICE_monFreq - SEAICE monitor frequency. (s)
C SEAICE_dumpFreq - SEAICE dump frequency. (s)
C SEAICE_taveFreq - SEAICE time-averaging frequency. (s)
C SEAICE_initialHEFF - initial sea-ice thickness (m)
C SEAICE_rhoAir - density of air (kg/m^3)
C SEAICE_rhoIce - density of sea ice (kg/m^3)
C SEAICE_drag - air-ice drag coefficient
C OCEAN_drag - air-ocean drag coefficient
C SEAICE_waterDrag - water-ice drag coefficient * water density
C SEAICE_dryIceAlb - winter albedo
C SEAICE_wetIceAlb - summer albedo
C SEAICE_drySnowAlb - dry snow albedo
C SEAICE_wetSnowAlb - wet snow albedo
C SEAICE_waterAlbedo - water albedo
C SEAICE_strength - sea-ice strength Pstar
C SEAICE_eccen - sea-ice eccentricity of the elliptical yield curve
C SEAICE_sensHeat - buld sensible heat transfer coefficient
C = (sensible heat transfer coefficient)
C x (heat capacity of air)
C x (density of air)
C SEAICE_latentWater - bulk latent heat transfer coefficient for water
C = (latent heat transfer coefficient for water)
C x (specific latent heat water to water vapor)
C x (density of air)
C SEAICE_latentIce - bulk latent heat transfer coefficient for ice
C = (latent heat transfer coefficient for ice)
C x (latent heat ice to water vapor)
C x (density of air)
C SEAICE_iceConduct - sea-ice conductivity
C SEAICE_snowConduct - snow conductivity
C SEAICE_emissivity - Stefan-Boltzman constant * emissivity
C SEAICE_snowThick - cutoff snow thickness
C SEAICE_shortwave - penetration shortwave radiation factor
C SEAICE_freeze - FREEZING TEMP. OF SEA WATER
C SEAICEstressFactor - factor by which ice affects wind stress (default=1)
C LSR_ERROR - sets accuracy of LSR solver
C DIFF1 - parameter used in advect.F
C A22 - parameter used in growth.F
C HO - demarcation thickness between thin and
C thick ice: HO is a key ice-growth parameter
C WindForcingStart - Time of first wind forcing record (s)
C WindForcingEnd - Time of last wind forcing record (s)
C WindForcingPeriod - Period between wind forcing records (s)
C FluxForcingStart - Time of first flux forcing record (s)
C FluxForcingEnd - Time of last flux forcing record (s)
C FluxForcingPeriod - Period between flux forcing records (s)
C SSTForcingStart - Time of first SST forcing record (s)
C SSTForcingEnd - Time of last SST forcing record (s)
C SSTForcingPeriod - Period between SST forcing records (s)
C SSSForcingStart - Time of first SSS forcing record (s)
C SSSForcingEnd - Time of last SSS forcing record (s)
C SSSForcingPeriod - Period between SSS forcing records (s)
C StartingYear - Starting year of integration
C EndingYear - Ending year of integration
C SEAICE_airTurnAngle - turning angles of air-ice interfacial stress
C SEAICE_waterTurnAngle - and ice-water interfacial stress (in degrees)
C
_RL SEAICE_deltaTtherm, SEAICE_deltaTdyn, SEAICE_deltaTevp
_RL SEAICE_monFreq, SEAICE_dumpFreq, SEAICE_taveFreq
_RL SEAICE_initialHEFF
_RL SEAICE_rhoAir, SEAICE_rhoIce
_RL SEAICE_drag, SEAICE_waterDrag, SEAICE_dryIceAlb
_RL SEAICE_wetIceAlb, SEAICE_drySnowAlb, SEAICE_wetSnowAlb
_RL SEAICE_waterAlbedo, SEAICE_strength, SEAICE_eccen
_RL SEAICE_sensHeat, SEAICE_latentWater, SEAICE_latentIce
_RL SEAICE_iceConduct, SEAICE_snowConduct, SEAICE_emissivity
_RL SEAICE_snowThick, SEAICE_shortwave, SEAICE_freeze
_RL SEAICEstressFactor
_RL OCEAN_drag, LSR_ERROR, DIFF1, A22, HO
_RL WindForcingStart, WindForcingEnd, WindForcingPeriod
_RL FluxForcingStart, FluxForcingEnd, FluxForcingPeriod
_RL SSTForcingStart, SSTForcingEnd, SSTForcingPeriod
_RL SSSForcingStart, SSSForcingEnd, SSSForcingPeriod
_RL StartingYear, EndingYear
_RL SEAICE_airTurnAngle, SEAICE_waterTurnAngle
_RL SEAICE_elasticParm
COMMON /SEAICE_PARM_RL/
& SEAICE_deltaTtherm, SEAICE_deltaTdyn,
& SEAICE_deltaTevp, SEAICE_elasticParm,
& SEAICE_monFreq, SEAICE_dumpFreq, SEAICE_taveFreq,
& SEAICE_initialHEFF,
& SEAICE_rhoAir, SEAICE_rhoIce,
& SEAICE_drag, SEAICE_waterDrag, SEAICE_dryIceAlb,
& SEAICE_wetIceAlb, SEAICE_drySnowAlb, SEAICE_wetSnowAlb,
& SEAICE_waterAlbedo, SEAICE_strength, SEAICE_eccen,
& SEAICE_sensHeat, SEAICE_latentWater, SEAICE_latentIce,
& SEAICE_iceConduct, SEAICE_snowConduct, SEAICE_emissivity,
& SEAICE_snowThick, SEAICE_shortwave, SEAICE_freeze,
& SEAICEstressFactor,
& OCEAN_drag, LSR_ERROR, DIFF1, A22, HO,
& WindForcingStart, WindForcingEnd, WindForcingPeriod,
& FluxForcingStart, FluxForcingEnd, FluxForcingPeriod,
& SSTForcingStart, SSTForcingEnd, SSTForcingPeriod,
& SSSForcingStart, SSSForcingEnd, SSSForcingPeriod,
& StartingYear, EndingYear,
& SEAICE_airTurnAngle, SEAICE_waterTurnAngle
C-- COMMON /SEAICE_BOUND_RL/ Various bounding values
C MAX_HEFF - maximum ice thickness (m)
C MIN_ATEMP - minimum air temperature (deg C)
C MIN_LWDOWN - minimum downward longwave (W/m^2)
C MAX_TICE - maximum ice temperature (deg C)
C MIN_TICE - minimum ice temperature (deg C)
C SEAICE_EPS, SEAICE_EPS_SQ - used to reduce derivative singularities
C
_RL MAX_HEFF, MIN_ATEMP, MIN_LWDOWN, MAX_TICE, MIN_TICE
_RL SEAICE_EPS, SEAICE_EPS_SQ
COMMON /SEAICE_BOUND_RL/
& MAX_HEFF, MIN_ATEMP, MIN_LWDOWN, MAX_TICE, MIN_TICE,
& SEAICE_EPS, SEAICE_EPS_SQ
C-- Constants used by sea-ice model
_RL ZERO , ONE , TWO
parameter ( ZERO = 0.0 _d 0, ONE = 1.0 _d 0, TWO = 2.0 _d 0 )
_RL QUART , HALF
parameter ( QUART = 0.25 _d 0, HALF = 0.5 _d 0 )
C-- identifiers for advected properties
INTEGER GAD_HEFF, GAD_AREA, GAD_QICE1, GAD_QICE2, GAD_SNOW
PARAMETER ( GAD_HEFF = 101,
& GAD_AREA = 102,
& GAD_QICE1 = 103,
& GAD_QICE2 = 104,
& GAD_SNOW = 105 )
CEH3 ;;; Local Variables: ***
CEH3 ;;; mode:fortran ***
CEH3 ;;; End: ***