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C $Header: /u/gcmpack/MITgcm/pkg/land/land_readparms.F,v 1.13 2009/04/28 22:10:02 jmc Exp $ |
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C $Name: $ |
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|
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#include "LAND_OPTIONS.h" |
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|
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CBOP |
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C !ROUTINE: LAND_READPARMS |
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C !INTERFACE: |
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SUBROUTINE LAND_READPARMS( myThid ) |
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|
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | S/R LAND_READPARMS |
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C | o Read Land package parameters from parameter |
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C | file "data.land" |
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C *==========================================================* |
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C \ev |
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|
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C !USES: |
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IMPLICIT NONE |
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|
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C == Global variables === |
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C-- size for MITgcm & Land package : |
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#include "LAND_SIZE.h" |
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|
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "LAND_PARAMS.h" |
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#ifdef ALLOW_MNC |
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# include "MNC_PARAMS.h" |
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#endif |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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C myThid :: my Thread Id number |
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INTEGER myThid |
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|
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#ifdef ALLOW_LAND |
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C !LOCAL VARIABLES: |
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C msgBuf :: Informational/error message buffer |
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C iUnit :: Work variable for IO unit number |
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C k :: loop counter |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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INTEGER iUnit, k |
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_RL tmpvar |
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CEOP |
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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-- Land model parameters: |
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C land_calc_grT :: step forward ground Temperature |
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C land_calc_grW :: step forward soil moiture |
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C land_impl_grT :: solve ground Temperature implicitly |
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C land_calc_snow :: step forward snow thickness |
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C land_calc_alb :: compute albedo of snow over land |
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C land_oldPickup :: restart from an old pickup (= before checkpoint 52j) |
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C land_grT_iniFile :: File containing initial ground Temp. |
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C land_grW_iniFile :: File containing initial ground Water. |
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C land_snow_iniFile :: File containing initial snow thickness. |
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C land_deltaT :: land model time-step |
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C land_taveFreq :: Frequency^-1 for time-Aver. output (s) |
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C land_diagFreq :: Frequency^-1 for diagnostic output (s) |
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C land_monFreq :: Frequency^-1 for monitor output (s) |
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C land_dzF :: layer thickness |
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NAMELIST /LAND_MODEL_PAR/ |
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& land_calc_grT, land_calc_grW, |
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& land_impl_grT, land_calc_snow, |
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& land_calc_alb, land_oldPickup, |
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& land_grT_iniFile, land_grW_iniFile, land_snow_iniFile, |
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& land_deltaT, land_taveFreq, land_diagFreq, land_monFreq, |
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& land_dzF, |
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& land_timeave_mnc, land_snapshot_mnc, land_mon_mnc, |
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& land_pickup_write_mnc, land_pickup_read_mnc |
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|
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C-- Physical constants : |
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C land_grdLambda :: Thermal conductivity of the ground |
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C land_heatCs :: Heat capacity of dry soil (J/m3/K) |
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C land_CpWater :: Heat capacity of water (J/kg/K) |
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C land_wTauDiff :: soil moisture diffusion time scale |
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C land_waterCap :: field capacity per meter of soil |
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C land_fractRunOff:: fraction of water in excess which run-off |
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C land_rhoLiqW :: density of liquid water (kg/m3) |
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C land_rhoSnow :: density of snow (kg/m3) |
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C land_Lfreez :: Latent heat of freezing (J/kg) |
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C land_hMaxSnow :: Maximum snow-thickness (m) |
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C diffKsnow :: thermal conductivity of snow (W/m/K) |
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C timeSnowAge :: snow aging time scale (s) |
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C hNewSnowAge :: new snow thickness that refresh the snow-age (by 1/e) |
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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 hAlbSnow :: snow thickness for albedo transition: snow/ground |
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|
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NAMELIST /LAND_PHYS_PAR/ |
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& land_grdLambda, land_heatCs, land_CpWater, |
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& land_wTauDiff, land_waterCap, land_fractRunOff, |
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& land_rhoLiqW, |
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& land_rhoSnow, land_Lfreez, |
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& land_hMaxSnow, diffKsnow, timeSnowAge, hNewSnowAge, |
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& albColdSnow, albWarmSnow, tempSnowAlbL, albOldSnow, hAlbSnow |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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IF ( .NOT.useLand ) THEN |
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C- pkg LAND is not used |
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_BEGIN_MASTER(myThid) |
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C- Track pkg activation status: |
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C print a (weak) warning if data.land is found |
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CALL PACKAGES_UNUSED_MSG( 'useLand', ' ', ' ' ) |
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_END_MASTER(myThid) |
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RETURN |
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ENDIF |
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|
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_BEGIN_MASTER(myThid) |
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|
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C- Set default value: |
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land_calc_grT = .TRUE. |
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land_calc_grW = .TRUE. |
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land_impl_grT = .TRUE. |
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land_calc_snow= .TRUE. |
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land_calc_alb = .TRUE. |
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land_oldPickup= .FALSE. |
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land_grT_iniFile = ' ' |
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land_grW_iniFile = ' ' |
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land_snow_iniFile= ' ' |
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land_deltaT = deltaTclock |
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land_taveFreq = taveFreq |
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land_diagFreq = dumpFreq |
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land_monFreq = monitorFreq |
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#ifdef ALLOW_MNC |
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land_timeave_mnc = timeave_mnc .AND. useMNC |
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land_snapshot_mnc = snapshot_mnc .AND. useMNC |
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land_mon_mnc = monitor_mnc .AND. useMNC |
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land_pickup_write_mnc = pickup_write_mnc .AND. useMNC |
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land_pickup_read_mnc = pickup_read_mnc .AND. useMNC |
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#else |
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land_timeave_mnc = .FALSE. |
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land_snapshot_mnc = .FALSE. |
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land_mon_mnc = .FALSE. |
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land_pickup_write_mnc = .FALSE. |
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land_pickup_read_mnc = .FALSE. |
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#endif |
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land_grdLambda= 0.42 _d 0 |
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land_heatCs = 1.13 _d 6 |
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land_CpWater = 4.2 _d 3 |
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c land_CpWater = HeatCapacity_Cp |
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land_wTauDiff = 48. _d 0*3600. _d 0 |
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land_waterCap = 0.24 _d 0 |
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land_fractRunOff = 0.5 _d 0 |
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land_rhoLiqW = rhoConstFresh |
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C- snow parameters: |
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land_rhoSnow = 330. _d 0 |
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land_Lfreez = 334. _d 3 |
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land_hMaxSnow = 1. _d 3 |
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diffKsnow = 0.30 _d 0 |
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timeSnowAge = 50. _d 0 * 86400. _d 0 |
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hNewSnowAge = 2. _d -3 |
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albColdSnow = 0.85 _d 0 |
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albWarmSnow = 0.70 _d 0 |
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tempSnowAlbL = -10. _d 0 |
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albOldSnow = 0.55 _d 0 |
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hAlbSnow = 0.30 _d 0 |
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C- layer thickness: |
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DO k=1,land_nLev |
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land_dzF(k) = -1. |
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land_rec_dzC(k) = -1. |
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ENDDO |
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WRITE(msgBuf,'(A)') ' LAND_READPARMS: opening data.land' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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I SQUEEZE_RIGHT, myThid ) |
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|
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CALL OPEN_COPY_DATA_FILE( 'data.land', 'LAND_READPARMS', |
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O iUnit, myThid ) |
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|
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C-- Read parameters from open data file: |
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|
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C- Parameters for Land model: |
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READ(UNIT=iUnit,NML=LAND_MODEL_PAR) |
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|
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C- Physical Constants for Land package |
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READ(UNIT=iUnit,NML=LAND_PHYS_PAR) |
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|
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WRITE(msgBuf,'(A)') |
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& ' LAND_READPARMS: finished reading data.land' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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I SQUEEZE_RIGHT, myThid ) |
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|
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C-- Close the open data file |
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CLOSE(iUnit) |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C-- Derive other parameters: |
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land_impl_grT = land_calc_grT .AND. land_impl_grT |
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|
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tmpvar = 0. _d 0 |
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DO k=1,land_nLev |
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tmpvar = tmpvar+land_dzF(k) |
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IF (tmpvar.GT.0. _d 0) land_rec_dzC(k) = 2. _d 0 / tmpvar |
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tmpvar = land_dzF(k) |
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ENDDO |
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IF ( land_Lfreez.NE. 0. _d 0 ) THEN |
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recip_Lfreez = 1. _d 0 / land_Lfreez |
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ELSE |
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recip_Lfreez = 0. _d 0 |
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ENDIF |
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|
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#ifdef ALLOW_MNC |
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land_timeave_mnc = useMNC .AND. land_timeave_mnc |
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land_snapshot_mnc = useMNC .AND. land_snapshot_mnc |
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land_mon_mnc = useMNC .AND. land_mon_mnc |
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land_pickup_write_mnc = useMNC .AND. land_pickup_write_mnc |
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land_pickup_read_mnc = useMNC .AND. land_pickup_read_mnc |
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|
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land_timeave_mdsio = (.NOT.land_timeave_mnc) |
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& .OR. outputTypesInclusive |
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land_snapshot_mdsio = (.NOT.land_snapshot_mnc) |
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& .OR. outputTypesInclusive |
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land_mon_stdio = (.NOT.land_mon_mnc) |
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& .OR. outputTypesInclusive |
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land_pickup_write_mdsio = (.NOT.land_pickup_write_mnc) |
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& .OR. outputTypesInclusive |
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#else |
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land_timeave_mnc = .FALSE. |
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land_snapshot_mnc = .FALSE. |
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land_mon_mnc = .FALSE. |
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land_pickup_write_mnc = .FALSE. |
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land_pickup_read_mnc = .FALSE. |
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land_timeave_mdsio = .TRUE. |
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land_snapshot_mdsio = .TRUE. |
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land_mon_stdio = .TRUE. |
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land_pickup_write_mdsio = .TRUE. |
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#endif |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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_END_MASTER(myThid) |
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|
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C-- Everyone else must wait for the parameters to be loaded |
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_BARRIER |
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|
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#endif /* ALLOW_LAND */ |
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|
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RETURN |
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END |
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