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C $Header: /u/gcmpack/MITgcm/pkg/land/land_readparms.F,v 1.3 2004/01/18 18:14:20 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 |
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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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|
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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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|
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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine Arguments == |
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C myThid :: Number of this instance |
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INTEGER myThid |
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CEOP |
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|
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#ifdef ALLOW_LAND |
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|
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C Functions |
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INTEGER ILNBLNK |
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|
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C == Local Variables == |
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C msgBuf :: Informational/error meesage 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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C iL :: Work variable for length of file-name |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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INTEGER iUnit, k, iL |
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_RL tmpvar |
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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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|
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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 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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& diffKsnow, timeSnowAge, hNewSnowAge, |
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& albColdSnow, albWarmSnow, 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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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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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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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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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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_BEGIN_MASTER(myThid) |
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|
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WRITE(msgBuf,'(A)') ' LAND_READPARMS: opening data.land' |
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CALL PRINT_MESSAGE(msgBuf,standardMessageUnit,SQUEEZE_RIGHT,1) |
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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,SQUEEZE_RIGHT,1) |
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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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|
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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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C-- Check parameters and model configuration |
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|
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IF ( land_nLev.NE.2 .AND. land_impl_grT ) THEN |
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WRITE(msgBuf,'(2A,I3)') 'LAND_READPARMS: ', |
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& ' land_impl_grT=.T. but land_nLev=',land_nLev |
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CALL PRINT_ERROR( msgBuf, myThid) |
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WRITE(msgBuf,'(A)') |
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& 'Implicit scheme only implemented for 2 levels land Temp' |
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CALL PRINT_ERROR( msgBuf, myThid) |
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STOP 'ABNORMAL END: S/R LAND_READPARMS' |
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ENDIF |
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|
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C- If land_taveFreq is positive, then must compile the land-diagnostics code |
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#ifndef ALLOW_LAND_TAVE |
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IF (land_taveFreq.GT.0.) THEN |
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WRITE(msgBuf,'(2A)') 'LAND_READPARMS:', |
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& ' land_taveFreq > 0 but ALLOW_LAND_TAVE undefined' |
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CALL PRINT_ERROR( msgBuf, myThid) |
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WRITE(msgBuf,'(2A)') 'Re-compile setting: ', |
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& '#define ALLOW_LAND_TAVE (in LAND_OPTIONS.h)' |
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CALL PRINT_ERROR( msgBuf, myThid) |
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STOP 'ABNORMAL END: S/R LAND_READPARMS' |
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ENDIF |
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#endif /* ALLOW_LAND_TAVE */ |
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|
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C- If land_monFreq is > 0, then must compile the monitor pkg |
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#ifndef ALLOW_MONITOR |
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IF (land_monFreq.GT.0.) THEN |
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WRITE(msgBuf,'(2A)') 'LAND_READPARMS:', |
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& ' land_monFreq > 0 but ALLOW_MONITOR undefined' |
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CALL PRINT_ERROR( msgBuf, myThid) |
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WRITE(msgBuf,'(2A)') |
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& 'Re-compile with pkg monitor (in packages.conf)' |
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CALL PRINT_ERROR( msgBuf, myThid) |
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STOP 'ABNORMAL END: S/R LAND_READPARMS' |
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ENDIF |
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#endif /* ALLOW_MONITOR */ |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C-- Print out parameter values : |
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|
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iUnit = standardMessageUnit |
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WRITE(msgBuf,'(A)') ' ' |
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CALL PRINT_MESSAGE(msgBuf,iUnit,SQUEEZE_RIGHT,1) |
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WRITE(msgBuf,'(A)') '// ===================================' |
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CALL PRINT_MESSAGE(msgBuf,iUnit,SQUEEZE_RIGHT,1) |
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WRITE(msgBuf,'(A)') '// Land package parameters :' |
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CALL PRINT_MESSAGE(msgBuf,iUnit,SQUEEZE_RIGHT,1) |
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WRITE(msgBuf,'(A)') '// ===================================' |
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CALL PRINT_MESSAGE(msgBuf,iUnit,SQUEEZE_RIGHT,1) |
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|
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C- namelist LAND_MODEL_PAR: |
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CALL WRITE_0D_L( land_calc_grT, INDEX_NONE, |
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& 'land_calc_grT =', |
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& ' /* step forward ground Temp. on/off flag */') |
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CALL WRITE_0D_L( land_calc_grW, INDEX_NONE, |
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& 'land_calc_grW =', |
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& ' /* step forward soil moiture on/off flag */') |
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CALL WRITE_0D_L( land_impl_grT, INDEX_NONE, |
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& 'land_impl_grT =', |
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& ' /* solve ground temperature implicitly */') |
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CALL WRITE_0D_L( land_calc_snow, INDEX_NONE, |
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& 'land_calc_snow =', |
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& ' /* step forward snow thickness */') |
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CALL WRITE_0D_L( land_calc_alb, INDEX_NONE, |
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& 'land_calc_alb =', |
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& ' /* compute land+snow albedo */') |
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iL = ILNBLNK( land_grT_iniFile ) |
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c IF ( iL.EQ.LEN(land_grT_iniFile) ) iL=0 |
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IF ( iL.GE.1 ) THEN |
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WRITE(msgBuf,'(A,A)') 'land_grT_iniFile = ', |
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& '/* Initial ground-Temp Input-File */' |
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CALL PRINT_MESSAGE(msgBuf,iUnit,SQUEEZE_RIGHT,1) |
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WRITE(msgBuf,'(16X,A)') land_grT_iniFile(1:iL) |
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CALL PRINT_MESSAGE(msgBuf,iUnit,SQUEEZE_RIGHT,1) |
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msgBuf=' ;' |
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CALL PRINT_MESSAGE(msgBuf,iUnit,SQUEEZE_RIGHT,1) |
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ENDIF |
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iL = ILNBLNK( land_grW_iniFile ) |
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IF ( iL.GE.1 ) THEN |
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WRITE(msgBuf,'(A,A)') 'land_grW_iniFile = ', |
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& '/* Initial soil-Water Input-File */' |
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CALL PRINT_MESSAGE(msgBuf,iUnit,SQUEEZE_RIGHT,1) |
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WRITE(msgBuf,'(16X,A)') land_grW_iniFile(1:iL) |
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CALL PRINT_MESSAGE(msgBuf,iUnit,SQUEEZE_RIGHT,1) |
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msgBuf=' ;' |
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CALL PRINT_MESSAGE(msgBuf,iUnit,SQUEEZE_RIGHT,1) |
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ENDIF |
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iL = ILNBLNK( land_snow_iniFile ) |
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IF ( iL.GE.1 ) THEN |
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WRITE(msgBuf,'(A,A)') 'land_snow_iniFile= ', |
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& '/* Initial snow thickness Input-File */' |
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CALL PRINT_MESSAGE(msgBuf,iUnit,SQUEEZE_RIGHT,1) |
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WRITE(msgBuf,'(16X,A)') land_grW_iniFile(1:iL) |
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CALL PRINT_MESSAGE(msgBuf,iUnit,SQUEEZE_RIGHT,1) |
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msgBuf=' ;' |
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CALL PRINT_MESSAGE(msgBuf,iUnit,SQUEEZE_RIGHT,1) |
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ENDIF |
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CALL WRITE_0D_R8( land_deltaT, INDEX_NONE,'land_deltaT =', |
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& ' /* land model Time-Step (s) */') |
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CALL WRITE_0D_R8( land_taveFreq, INDEX_NONE,'land_taveFreq =', |
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& ' /* Frequency^-1 for time-Aver. output (s) */') |
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CALL WRITE_0D_R8( land_diagFreq, INDEX_NONE,'land_diagFreq =', |
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& ' /* Frequency^-1 for diagnostic output (s) */') |
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CALL WRITE_0D_R8( land_diagFreq, INDEX_NONE,'land_monFreq =', |
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& ' /* Frequency^-1 for monitor output (s) */') |
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CALL WRITE_1D_R8( land_dzF,land_nLev, INDEX_K,'land_dzF = ', |
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& ' /* layer thickness ( m ) */') |
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CALL WRITE_1D_R8(land_rec_dzC,land_nLev,INDEX_K,'land_rec_dzC= ' |
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& ,' /* recip. vertical spacing (m-1) */') |
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|
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C- namelist LAND_PHYS_PAR: |
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CALL WRITE_0D_R8(land_grdLambda,INDEX_NONE,'land_grdLambda =', |
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& ' /* Thermal conductivity of the ground (W/m/K)*/') |
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CALL WRITE_0D_R8( land_heatCs,INDEX_NONE,'land_heatCs =', |
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& ' /* Heat capacity of dry soil (J/m3/K) */') |
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CALL WRITE_0D_R8( land_CpWater,INDEX_NONE,'land_CpWater =', |
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& ' /* Heat capacity of water (J/kg/K) */') |
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CALL WRITE_0D_R8( land_wTauDiff,INDEX_NONE,'land_wTauDiff =', |
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& ' /* soil moisture diffusion time scale (s) */') |
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CALL WRITE_0D_R8( land_waterCap,INDEX_NONE,'land_waterCap =', |
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& ' /* field capacity per meter of soil (1) */') |
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CALL WRITE_0D_R8(land_fractRunOff,INDEX_NONE,'land_fractRunOff=' |
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& ,' /* fraction of water in excess which run-off */') |
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CALL WRITE_0D_R8(land_rhoLiqW,INDEX_NONE,'land_rhoLiqW =', |
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& ' /* density of liquid water (kg/m3) */') |
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CALL WRITE_0D_R8(land_rhoSnow,INDEX_NONE,'land_rhoSnow =', |
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& ' /* density of snow (kg/m3) */') |
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CALL WRITE_0D_R8(land_Lfreez,INDEX_NONE,'land_Lfreez =', |
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& ' /* Latent heat of freezing (J/kg) */') |
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CALL WRITE_0D_R8(diffKsnow,INDEX_NONE,'diffKsnow =', |
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& ' /* thermal conductivity of snow (W/m/K) */') |
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CALL WRITE_0D_R8(timeSnowAge,INDEX_NONE,'timeSnowAge =', |
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& ' /* snow aging time scale (s) */') |
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CALL WRITE_0D_R8(hNewSnowAge,INDEX_NONE,'hNewSnowAge =', |
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& ' /* new snow thickness to refresh snow-age by 1/e */') |
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CALL WRITE_0D_R8(albColdSnow,INDEX_NONE,'albColdSnow =', |
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& ' /* albedo of cold (=dry) new snow */') |
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CALL WRITE_0D_R8(albWarmSnow,INDEX_NONE,'albWarmSnow =', |
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& ' /* albedo of warm (=wet) new snow */') |
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CALL WRITE_0D_R8(albOldSnow, INDEX_NONE,'albOldSnow =', |
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& ' /* albedo of old snow (snowAge >35.d)*/') |
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CALL WRITE_0D_R8(hAlbSnow, INDEX_NONE,'hAlbSnow =', |
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& ' /* snow depth for albedo transition */') |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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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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