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C $Header: /u/gcmpack/MITgcm/pkg/aim_v23/phy_suflux_post.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_POST |
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C !INTERFACE: |
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SUBROUTINE SUFLUX_POST( |
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I FMASK, EMISloc, |
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I TLAND, TSEA, TSICE, dTskin, SLRD, |
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I T0, Q0, CDENVV, |
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U DRAG, SHF, EVAP, SLRup, |
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O SLRU, TSFC, TSKIN, |
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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_POST |
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C | o finish surface flux calculation |
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C *==========================================================* |
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C | o contain 2nd part of original S/R SUFLUX (Speedy code) |
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C *==========================================================* |
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C-- |
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C-- SUBROUTINE SUFLUX (PSA,UA,VA,TA,QA,RH,PHI, |
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C-- & PHI0,FMASK,TLAND,TSEA,SWAV,SSR,SLRD, |
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C-- & USTR,VSTR,SHF,EVAP,SLRU, |
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C-- & TSFC,TSKIN,U0,V0,T0,Q0) |
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C-- |
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C-- Purpose: Compute surface fluxes of momentum, energy and moisture, |
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C-- and define surface skin temperature from energy balance |
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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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#include "GRID.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 !INPUT/OUTPUT PARAMETERS: |
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C == Routine Arguments == |
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C-- Input: |
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C FMASK :: fraction land - sea - sea-ice (2.5-dim) |
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C EMISloc:: longwave surface emissivity |
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C TLAND :: land-surface temperature (2-dim) |
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C TSEA :: sea-surface temperature (2-dim) |
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C TSICE :: sea-ice surface temperature (2-dim) |
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C dTskin :: temp. correction for daily-cycle heating [K] |
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C SLRD :: sfc lw radiation (downward flux)(2-dim) |
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C SSR :: sfc sw radiation (net flux) (2-dim) |
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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 CDENVV :: sensible heat flux coefficient (1:land, 2:sea, 3:sea-ice) |
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C-- Output: |
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C DRAG :: surface Drag term (= Cd*Rho*|V|)(2-dim) |
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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 SLRup :: same, for each surface type (2-dim) |
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C TSFC :: surface temperature (clim.) (2-dim) |
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C TSKIN :: skin surface temperature (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 FMASK(NGP,3), EMISloc |
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_RL TLAND(NGP), TSEA(NGP), TSICE(NGP), dTskin(NGP), SLRD(NGP) |
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_RL T0(NGP), Q0(NGP), CDENVV(NGP,3) |
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_RL DRAG(NGP,0:3), SHF(NGP,0:3), EVAP(NGP,0:3), SLRup(NGP,3) |
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_RL SLRU(NGP), TSFC(NGP), TSKIN(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 J,i1,j1 :: Loop counters |
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C msgBuf :: Informational/error message buffer |
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INTEGER J,i1,j1 |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C-- 1. Extrapolation of wind, temp, hum. and density to the surface |
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C-- 2. Computation of fluxes over land and sea |
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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 3.2 Sensible heat flux (from clim. TS over land) |
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C Note: needs to update SHF if land or sea-ice surf temp are computed |
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C implicitly ; recomputes SHF is consistent since SHF linear in TS |
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DO J=1,NGP |
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SHF(J,1) = CDENVV(J,1)*CP*(TLAND(J)+dTskin(J)-T0(J)) |
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c SHF(J,2) = CDENVV(J,2)*CP*(TSEA(J) -T0(J)) |
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SHF(J,3) = CDENVV(J,3)*CP*(TSICE(J)-T0(J)) |
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ENDDO |
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C-- 4. Weighted average of surface fluxes and temperatures |
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C-- according to land-sea mask |
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DO J=1,NGP |
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c USTR(J,3) = USTR(J,2)+FMASK(J,1)*(USTR(J,1)-USTR(J,2)) |
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c VSTR(J,3) = VSTR(J,2)+FMASK(J,1)*(VSTR(J,1)-VSTR(J,2)) |
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c DRAG(J,0) = DRAG(J,2)+FMASK(J,1)*(DRAG(J,1)-DRAG(J,2)) |
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c SHF(J,0) = SHF(J,2)+FMASK(J,1)*( SHF(J,1)- SHF(J,2)) |
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c EVAP(J,0) = EVAP(J,2)+FMASK(J,1)*(EVAP(J,1)-EVAP(J,2)) |
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c SLRU(J) = SLRup(J,2)+FMASK(J,1)*(SLRup(J,1)-SLRup(J,2)) |
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DRAG(J,0) = (FMASK(J,1)*DRAG(J,1)+FMASK(J,2)*DRAG(J,2) |
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& +FMASK(J,3)*DRAG(J,3)) |
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SHF (J,0) = (FMASK(J,1)*SHF(J,1) +FMASK(J,2)*SHF(J,2) |
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& +FMASK(J,3)*SHF(J,3) ) |
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EVAP(J,0) = (FMASK(J,1)*EVAP(J,1)+FMASK(J,2)*EVAP(J,2) |
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& +FMASK(J,3)*EVAP(J,3)) |
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SLRU(J) = (FMASK(J,1)*SLRup(J,1)+FMASK(J,2)*SLRup(J,2) |
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& +FMASK(J,3)*SLRup(J,3)) |
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ENDDO |
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DO J=1,NGP |
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c TSFC(J) = TSEA(J)+FMASK(J,1)*(TLAND(J)-TSEA(J)) |
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TSFC(J) = (FMASK(J,1)*TLAND(J) + FMASK(J,2)*TSEA(J) |
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& + FMASK(J,3)*TSICE(J)) |
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TSKIN(J) = TSFC(J)+FMASK(J,1)*dTskin(J) |
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ENDDO |
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C- Compute Net LW surf flux (+=upward) for each surface type: |
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C (for diagnostic only) |
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DO J=1,NGP |
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SLRup(J,1)=EMISloc*SLRup(J,1)-SLRD(J) |
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SLRup(J,2)=EMISloc*SLRup(J,2)-SLRD(J) |
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SLRup(J,3)=EMISloc*SLRup(J,3)-SLRD(J) |
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ENDDO |
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C- Check that Temp is OK for LW Radiation scheme : |
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DO J=1,NGP |
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IF ( TSFC(J).LT.lwTemp1 .OR. |
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& TSFC(J).GT.lwTemp2 ) THEN |
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i1 = 1 + mod((J-1),sNx) |
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j1 = 1 + int((J-1)/sNx) |
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WRITE(msgBuf,'(A,1PE20.13,A,2I4)') |
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& 'SUFLUX_POST: TS=', TSFC(J), |
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& ' out of range ',lwTemp1,lwTemp2 |
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CALL PRINT_ERROR( msgBuf , myThid) |
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WRITE(msgBuf,'(A,1P3E10.3,A,0P3F8.5)') |
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& 'SUFLUX_POST: T_Lnd,Sea,Sic=',TLAND(J),TSEA(J),TSICE(J), |
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& ' Mask:',FMASK(J,1),FMASK(J,2),FMASK(J,3) |
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CALL PRINT_ERROR( msgBuf , myThid) |
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WRITE(msgBuf,'(A,2I4,3I3,I6,2F9.3)') |
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& 'SUFLUX_POST: Pb in i,j,bi,bj,myThid,IJ,X,Y=', |
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& i1,j1,bi,bj,myThid,J,xC(i1,j1,bi,bj),yC(i1,j1,bi,bj) |
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CALL PRINT_ERROR( msgBuf , myThid) |
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STOP 'ABNORMAL END: S/R SUFLUX_POST' |
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ENDIF |
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ENDDO |
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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 |
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