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adcroft |
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C $Header: /u/gcmpack/models/MITgcmUV/model/src/integrate_for_w.F,v 1.5.2.1 2001/03/30 23:09:36 jmc Exp $ |
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cnh |
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C $Name: $ |
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adcroft |
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#include "CPP_OPTIONS.h" |
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CStartOfInterFace |
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SUBROUTINE INTEGRATE_FOR_W( |
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I bi,bj,k,uFld,vFld, |
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O wFld, |
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I myThid) |
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C /==========================================================\ |
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C | SUBROUTINE CALC_COMMON_FACTORS | |
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C | o Calculate common data (such as volume flux) for use | |
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C | by "Right hand side" subroutines. | |
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C |==========================================================| |
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C | Here, we calculate terms or spatially varying factors | |
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C | that are used at various points in the "RHS" subroutines.| |
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C | This reduces the amount of total work, total memory | |
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C | and therefore execution time and is generally a good | |
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C | idea. | |
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C \==========================================================/ |
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IMPLICIT NONE |
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C == GLobal variables == |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "GRID.h" |
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C == Routine arguments == |
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INTEGER bi,bj,k |
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_RL uFld (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
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_RL vFld (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
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_RL wFld (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
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INTEGER myThid |
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CEndOfInterface |
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C == Local variables == |
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INTEGER i,j |
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_RL uTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL vTrans(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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C-- Calculate velocity field "volume transports" through |
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C tracer cell faces. |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
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uTrans(i,j) = uFld(i,j,k,bi,bj)* |
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& _dyG(i,j,bi,bj) |
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& *drF(k)*_hFacW(i,j,k,bi,bj) |
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vTrans(i,j) = vFld(i,j,k,bi,bj)* |
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& _dxG(i,j,bi,bj) |
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& *drF(k)*_hFacS(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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adcroft |
1.6 |
C-- Calculate vertical "volume transport" through face k |
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C between tracer cell k-1 & k |
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IF (rigidLid) THEN |
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C- o Rigid-Lid case: zero at lower and upper boundaries |
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IF (k.eq.1) THEN |
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DO j=1-Oly,sNy+Oly-1 |
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DO i=1-Olx,sNx+Olx-1 |
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wFld(i,j,k,bi,bj) = 0. |
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ENDDO |
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adcroft |
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ENDDO |
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adcroft |
1.6 |
ELSEIF (k.eq.Nr) THEN |
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DO j=1-Oly,sNy+Oly-1 |
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DO i=1-Olx,sNx+Olx-1 |
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wFld(i,j,k,bi,bj) = |
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& -( uTrans(i+1,j)-uTrans(i,j) |
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& +vTrans(i,j+1)-vTrans(i,j) |
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& )*recip_rA(i,j,bi,bj) |
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& *maskC(i,j,k,bi,bj)*maskC(i,j,k-1,bi,bj) |
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ENDDO |
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ENDDO |
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ELSE |
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DO j=1-Oly,sNy+Oly-1 |
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DO i=1-Olx,sNx+Olx-1 |
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wFld(i,j,k,bi,bj) = |
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& ( wFld(i,j,k+1,bi,bj) |
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& -( uTrans(i+1,j)-uTrans(i,j) |
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& +vTrans(i,j+1)-vTrans(i,j) |
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& )*recip_rA(i,j,bi,bj) |
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& )*maskC(i,j,k,bi,bj)*maskC(i,j,k-1,bi,bj) |
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ENDDO |
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adcroft |
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ENDDO |
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adcroft |
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ENDIF |
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adcroft |
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ELSE |
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adcroft |
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C- o Linear Free Surface case: |
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C non zero at surface ; zero under-ground and at r_lower boundary |
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IF (k.eq.Nr) THEN |
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DO j=1-Oly,sNy+Oly-1 |
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DO i=1-Olx,sNx+Olx-1 |
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wFld(i,j,k,bi,bj) = |
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& -( uTrans(i+1,j)-uTrans(i,j) |
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& +vTrans(i,j+1)-vTrans(i,j) |
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& )*recip_rA(i,j,bi,bj) |
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& *maskC(i,j,k,bi,bj) |
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ENDDO |
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adcroft |
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ENDDO |
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adcroft |
1.6 |
ELSE |
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DO j=1-Oly,sNy+Oly-1 |
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DO i=1-Olx,sNx+Olx-1 |
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wFld(i,j,k,bi,bj) = |
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& ( wFld(i,j,k+1,bi,bj) |
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& -( uTrans(i+1,j)-uTrans(i,j) |
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& +vTrans(i,j+1)-vTrans(i,j) |
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& )*recip_rA(i,j,bi,bj) |
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& )*maskC(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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ENDIF |
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C- endif - rigid-lid / linear Free-Surf. |
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adcroft |
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ENDIF |
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RETURN |
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END |
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