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C $Header: /u/gcmpack/MITgcm/pkg/aim_v23/phy_suflux_ocean.F,v 1.1 2004/03/11 14:33:19 jmc Exp $ |
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C $Name: $ |
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#include "AIM_OPTIONS.h" |
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CBOP |
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C !ROUTINE: SUFLUX_OCEAN |
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C !INTERFACE: |
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SUBROUTINE SUFLUX_OCEAN( |
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I PSA, FMASK, |
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I Tsurf, SSR, SLRD, |
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I T1, T0, Q0, DENVV, |
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O SHF, EVAP, SLRU, |
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I bi,bj,myThid) |
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | S/R SUFLUX_OCEAN |
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C | o compute surface flux over ocean |
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C *==========================================================* |
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C | o contains part of original S/R SUFLUX (Speedy code) |
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C *==========================================================* |
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C \ev |
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C !USES: |
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IMPLICIT NONE |
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C Resolution parameters |
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C-- size for MITgcm & Physics package : |
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#include "AIM_SIZE.h" |
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#include "EEPARAMS.h" |
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C Physical constants + functions of sigma and latitude |
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#include "com_physcon.h" |
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C Surface flux constants |
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#include "com_sflcon.h" |
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C == Routine Arguments == |
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C-- Input: |
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C FMASK :: fractional land-sea mask (2-dim) |
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C Tsurf :: surface temperature (2-dim) |
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C SSR :: sfc sw radiation (net flux) (2-dim) |
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C SLRD :: sfc lw radiation (downward flux)(2-dim) |
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C T1 :: near-surface air temperature (from Pot.temp) |
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C T0 :: near-surface air temperature (2-dim) |
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C Q0 :: near-surface sp. humidity [g/kg](2-dim) |
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C DENVV :: surface flux (sens,lat.) coeff. (=Rho*|V|) [kg/m2/s] |
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C-- Output: |
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C SHF :: sensible heat flux (2-dim) |
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C EVAP :: evaporation [g/(m^2 s)] (2-dim) |
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C SLRU :: sfc lw radiation (upward flux) (2-dim) |
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C-- Input: |
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C bi,bj :: tile index |
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C myThid :: Thread number for this instance of the routine |
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C-- |
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_RL PSA(NGP) |
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_RL FMASK(NGP), Tsurf(NGP) |
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_RL SSR(NGP), SLRD(NGP) |
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_RL T1(NGP), T0(NGP), Q0(NGP), DENVV(NGP) |
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_RL SHF(NGP), EVAP(NGP), SLRU(NGP) |
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INTEGER bi,bj,myThid |
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CEOP |
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#ifdef ALLOW_AIM |
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C-- Local variables: |
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C CDENVV :: surf. heat flux (sens.,lat.) coeff including stability effect |
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_RL CDENVV(NGP), RDTH, FSSEA |
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_RL QSAT0(NGP) |
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_RL QDUMMY(1), RDUMMY(1), TS4 |
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INTEGER J |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C-- 2. Computation of fluxes over land and sea |
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C 2.1 Wind stress |
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C 2.2 Sensible heat flux (from clim. TS over land) |
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C Stability correction |
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RDTH = FSTAB/DTHETA |
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DO J=1,NGP |
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FSSEA =1.+MIN(DTHETA,MAX(-DTHETA, Tsurf(J)-T1(J)))*RDTH |
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CDENVV(J)=CHS*DENVV(J)*FSSEA |
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ENDDO |
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DO J=1,NGP |
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SHF(J) = CDENVV(J)*CP*(Tsurf(J)-T0(J)) |
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ENDDO |
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C 2.3 Evaporation |
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CALL SHTORH (0, NGP, Tsurf, PSA, 1. _d 0, QDUMMY, RDUMMY, |
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& QSAT0, myThid) |
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DO J=1,NGP |
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EVAP(J) = CDENVV(J)*(QSAT0(J)-Q0(J)) |
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ENDDO |
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C 2.4 Emission of lw radiation from the surface |
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DO J=1,NGP |
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TS4 = Tsurf(J)**4 |
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SLRU(J) = SBC*TS4 |
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ENDDO |
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C-- 3. Adjustment of skin temperature and fluxes over land |
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C-- based on energy balance (to be implemented) |
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C <= done separately for each surface type (land,sea,se-ice) |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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#endif /* ALLOW_AIM */ |
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RETURN |
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END |