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jmc |
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C $Header: /u/gcmpack/models/MITgcmUV/pkg/gmredi/gmredi_ytransport.F,v 1.4 2001/02/04 14:38:49 cnh Exp $ |
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C $Name: $ |
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adcroft |
1.1 |
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#include "GMREDI_OPTIONS.h" |
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subroutine GMREDI_YTRANSPORT( |
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I iMin,iMax,jMin,jMax,bi,bj,K, |
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I yA,Tracer, |
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U df, |
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I myThid) |
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C /==========================================================\ |
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C | o SUBROUTINE GMREDI_YTRANSPORT | |
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C | Add horizontal y transport terms from GM/Redi | |
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C | parameterization. | |
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C |==========================================================| |
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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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#include "GMREDI.h" |
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C == Routine arguments == |
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C iMin,iMax,jMin, - Range of points for which calculation |
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C jMax,bi,bj,k results will be set. |
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C xA - Area of X face |
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C Tracer - 3D Tracer field |
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C df - Diffusive flux component work array. |
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INTEGER iMin,iMax,jMin,jMax,bi,bj,k |
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_RS yA(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL Tracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
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_RL df (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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INTEGER myThid |
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#ifdef ALLOW_GMREDI |
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C == Local variables == |
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C I, J - Loop counters |
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INTEGER I, J |
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jmc |
1.5 |
INTEGER km1,kp1 |
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_RL vTrans, maskp1, dTdz |
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adcroft |
1.1 |
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heimbach |
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IF (useGMRedi) THEN |
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adcroft |
1.1 |
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C-- Area integrated meridional flux |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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df(i,j) = df(i,j) |
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jmc |
1.5 |
& -yA(i,j) |
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adcroft |
1.1 |
#ifdef GM_NON_UNITY_DIAGONAL |
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heimbach |
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& *Kvy(i,j,k,bi,bj) |
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jmc |
1.5 |
#else |
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& *(GM_isopycK |
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#ifdef GM_VISBECK_VARIABLE_K |
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& +0.5*(VisbeckK(i,j,bi,bj)+VisbeckK(i,j-1,bi,bj)) |
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adcroft |
1.1 |
#endif |
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jmc |
1.5 |
& ) |
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#endif /* GM_NON_UNITY_DIAGONAL */ |
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adcroft |
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& *_recip_dyC(i,j,bi,bj) |
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& *(Tracer(i,j,k,bi,bj)-Tracer(i,j-1,k,bi,bj)) |
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ENDDO |
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ENDDO |
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jmc |
1.5 |
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#ifdef GM_EXTRA_DIAGONAL |
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IF (GM_ExtraDiag) THEN |
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km1 = MAX(k-1,1) |
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kp1 = MIN(k+1,Nr) |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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C- Vertical gradients interpolated to V points |
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dTdz = 0.5*( |
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& +0.5*recip_drC(k)* |
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& ( maskC(i,j-1,k,bi,bj)* |
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& (Tracer(i,j-1,km1,bi,bj)-Tracer(i,j-1,k,bi,bj)) |
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& +maskC(i, j ,k,bi,bj)* |
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& (Tracer(i, j ,km1,bi,bj)-Tracer(i, j ,k,bi,bj)) |
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& ) |
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& +0.5*recip_drC(kp1)* |
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& ( maskC(i,j-1,kp1,bi,bj)* |
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& (Tracer(i,j-1,k,bi,bj)-Tracer(i,j-1,kp1,bi,bj)) |
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& +maskC(i, j ,kp1,bi,bj)* |
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& (Tracer(i, j ,k,bi,bj)-Tracer(i, j ,kp1,bi,bj)) |
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& ) ) |
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C- Off-diagonal components of horizontal flux |
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df(i,j) = df(i,j) - yA(i,j)*Kvz(i,j,k,bi,bj)*dTdz |
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ENDDO |
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ENDDO |
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ENDIF |
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#endif /* GM_EXTRA_DIAGONAL */ |
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#ifdef GM_BOLUS_ADVEC |
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IF (GM_AdvForm) THEN |
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kp1 = MIN(k+1,Nr) |
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maskp1 = 1. |
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IF (k.GE.Nr) maskp1 = 0. |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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vTrans = dxG(i,j,bi,bj)*( GM_PsiY(i,j,kp1,bi,bj)*maskp1 |
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& -GM_PsiY(i,j,k,bi,bj) ) |
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& *maskS(i,j,k,bi,bj) |
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df(i,j) = df(i,j) |
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& +vTrans*0.5*(Tracer(i,j,k,bi,bj)+Tracer(i,j-1,k,bi,bj)) |
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ENDDO |
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ENDDO |
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ENDIF |
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#endif /* GM_BOLUS_ADVEC */ |
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adcroft |
1.1 |
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ENDIF |
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#endif /* ALLOW_GMREDI */ |
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RETURN |
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END |
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