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C $Header: /u/gcmpack/MITgcm/pkg/aim_v23/aim_aim2land.F,v 1.2 2004/03/11 14:33:19 jmc Exp $ |
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C $Name: $ |
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|
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#include "AIM_OPTIONS.h" |
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#ifdef ALLOW_LAND |
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#include "LAND_OPTIONS.h" |
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#endif |
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|
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CBOP |
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C !ROUTINE: AIM_AIM2LAND |
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C !INTERFACE: |
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SUBROUTINE AIM_AIM2LAND( |
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I land_frc, bi, bj, myTime, myIter, myThid) |
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|
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | S/R AIM_AIM2LAND |
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C | o Export land surface fluxes to Land package |
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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 & Physics package : |
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#include "AIM_SIZE.h" |
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|
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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|
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C-- Physics package |
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#include "AIM_PARAMS.h" |
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#include "com_physcon.h" |
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#include "com_physvar.h" |
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|
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#ifdef ALLOW_LAND |
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#include "LAND_SIZE.h" |
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#include "LAND_PARAMS.h" |
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#include "LAND_VARS.h" |
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#endif |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine arguments == |
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C land_frc :: land fraction [0-1] |
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C bi,bj :: Tile index |
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C myTime :: Current time of simulation ( s ) |
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C myIter :: Current iteration number in simulation |
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C myThid :: Number of this instance of the routine |
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_RS land_frc(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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INTEGER bi, bj, myIter, myThid |
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_RL myTime |
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CEOP |
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|
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#ifdef ALLOW_AIM |
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#ifdef ALLOW_LAND |
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C == Local variables == |
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C i,j,k,I2 :: loop counters |
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C conv_precip :: conversion factor for precip: from g/m2/s to kg/m2/s |
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_RL conv_precip |
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INTEGER i,j,k,I2 |
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|
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C-- Initialisation : |
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IF ( .NOT.land_impl_grT ) THEN |
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DO j=1,sNy |
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DO i=1,sNx |
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land_Pr_m_Ev(i,j,bi,bj) = 0. _d 0 |
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land_EnWFlux(i,j,bi,bj) = 0. _d 0 |
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ENDDO |
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ENDDO |
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ENDIF |
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|
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C-- Atmospheric Physics Fluxes |
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|
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c IF ( useLand ) THEN |
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|
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C from g/m2/s to kg/m2/s : |
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conv_Precip = 1. _d -3 |
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|
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IF ( land_calc_grT .AND. .NOT.land_impl_grT ) THEN |
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C-- Surface heat flux to compute ground temperature explicitely: |
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k = 0 |
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IF (aim_splitSIOsFx) k = 1 |
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DO j=1,sNy |
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DO i=1,sNx |
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I2 = i+(j-1)*sNx |
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|
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C- total surface downward heat flux : |
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land_HeatFlx(i,j,bi,bj) = |
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& SSR(I2,k,myThid) |
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& - SLR(I2,k,myThid) |
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& - SHF(I2,1,myThid) |
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& - EVAP(I2,1,myThid)*ALHC |
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ENDDO |
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ENDDO |
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|
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IF ( land_calc_snow ) THEN |
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C- Evap of snow: substract Latent Heat of freezing from heatFlux |
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DO j=1,sNy |
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DO i=1,sNx |
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I2 = i+(j-1)*sNx |
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IF ( land_skinT(i,j,bi,bj).LT. 0. _d 0 .OR. |
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& land_hSnow(i,j,bi,bj).GT. 0. _d 0 ) THEN |
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land_HeatFlx(i,j,bi,bj) = land_HeatFlx(i,j,bi,bj) |
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& - EVAP(I2,1,myThid)*ALHF |
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land_EnWFlux(i,j,bi,bj) = |
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& EVAP(I2,1,myThid)*ALHF |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDIF |
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|
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C-- to compute ground temperature explicitely: end |
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ENDIF |
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|
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C-- Fresh water fluxes |
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DO j=1,sNy |
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DO i=1,sNx |
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I2 = i+(j-1)*sNx |
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|
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C- total Precip minus Evap surface flux : |
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C convert from g.m-2.s-1 to kg/m2/s |
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land_Pr_m_Ev(i,j,bi,bj) = land_Pr_m_Ev(i,j,bi,bj) |
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& + conv_precip*( PRECNV(I2,myThid) |
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& + PRECLS(I2,myThid) |
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& - EVAP(I2,1,myThid) |
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& ) |
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|
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ENDDO |
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ENDDO |
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|
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IF ( aim_energPrecip ) THEN |
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C- Compute energy flux related to Precip. (snow, T_rain) |
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C Evap of snow: add Latent Heat of freezing |
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DO j=1,sNy |
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DO i=1,sNx |
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I2 = i+(j-1)*sNx |
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land_EnWFlux(i,j,bi,bj) = land_EnWFlux(i,j,bi,bj) |
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& + EnPrec(I2,myThid)*( PRECNV(I2,myThid) |
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& +PRECLS(I2,myThid) ) |
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ENDDO |
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ENDDO |
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ENDIF |
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|
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C- end (if useLand) |
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c ENDIF |
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|
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#endif /* ALLOW_LAND */ |
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#endif /* ALLOW_AIM */ |
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|
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RETURN |
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END |
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