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adcroft |
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C $Header: /u/gcmpack/models/MITgcmUV/model/src/correction_step.F,v 1.10 1998/11/06 22:44:45 cnh Exp $ |
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1.1 |
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cnh |
1.10 |
#include "CPP_OPTIONS.h" |
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C /==========================================================\ |
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C | S/R CORRECTION_STEP | |
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C | o Corrects the horizontal flow fields with the surface | |
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1.7 |
C | slope. | |
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C \==========================================================/ |
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SUBROUTINE CORRECTION_STEP( bi, bj, iMin, iMax, jMin, jMax, |
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cnh |
1.8 |
I K, etaSurfX, etaSurfY, |
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1.6 |
I myCurrentTime, myThid ) |
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cnh |
1.7 |
IMPLICIT NONE |
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1.1 |
! Common |
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#include "SIZE.h" |
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#include "DYNVARS.h" |
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1.3 |
#include "EEPARAMS.h" |
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1.1 |
#include "PARAMS.h" |
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#include "GRID.h" |
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#include "CG2D.h" |
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#ifdef ALLOW_NONHYDROSTATIC |
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#include "CG3D.h" |
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#endif |
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1.1 |
C == Routine Arguments == |
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1.9 |
C etaSurfX, etaSurfY - Surface slope |
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cnh |
1.7 |
C bi,bj,iMin,iMax,jMin,jMax, K - Loop counters |
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1.9 |
C myThid - Instance number for |
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C this call to S/R CORRECTION_STEP |
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C myCurrentTime - Current simulation time for this instance. |
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_RL etaSurfX(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL etaSurfY(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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1.1 |
INTEGER bi,bj,iMin,iMax,jMin,jMax |
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INTEGER K |
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INTEGER myThid |
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1.6 |
_RL myCurrentTime |
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cnh |
1.7 |
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1.1 |
C == Local variables == |
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INTEGER i,j |
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1.11 |
_RL hxFac,hyFac |
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_RL hx3dFac,hy3dFac |
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C On/off scaling paramters |
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hxFac = pfFacMom |
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hyFac = pfFacMom |
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IF ( nonHydrostatic ) THEN |
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hx3dFac = pfFacMom |
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hy3dFac = pfFacMom |
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ELSE |
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hx3dFac = 0. |
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hy3dFac = 0. |
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ENDIF |
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C Step forward zonal velocity |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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uVel(i,j,k,bi,bj)=( gUNm1(i,j,k,bi,bj) |
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& -deltaTmom*hxFac*gBaro*etaSurfX(i,j) |
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1.11 |
#ifdef ALLOW_NONHYDROSTATIC |
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& -deltaTmom*hx3dFac*gravity*_recip_dxC(i,j,bi,bj)* |
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& (cg3d_x(i,j,k,bi,bj)-cg3d_x(i-1,j,k,bi,bj)) |
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#endif |
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& )*_maskW(i,j,k,bi,bj) |
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gUNm1(i,j,k,bi,bj)=gU(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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C Step forward meridional velocity |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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vVel(i,j,k,bi,bj)=( gVNm1(i,j,k,bi,bj) |
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& -deltaTmom*hyFac*gBaro*etaSurfY(i,j) |
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1.11 |
#ifdef ALLOW_NONHYDROSTATIC |
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& -deltaTmom*hy3dFac*gravity*_recip_dyC(i,j,bi,bj)* |
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& (cg3d_x(i,j,k,bi,bj)-cg3d_x(i,j-1,k,bi,bj)) |
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#endif |
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& )*_maskS(i,j,k,bi,bj) |
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gVNm1(i,j,k,bi,bj)=gV(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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C Rotate theta/gT/gTnm1 |
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IF ( tempStepping ) THEN |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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theta(i,j,k,bi,bj)=gTNm1(i,j,k,bi,bj) |
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gTNm1(i,j,k,bi,bj)=gT(i,j,k,bi,bj) |
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ENDDO |
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1.4 |
ENDDO |
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1.10 |
ENDIF |
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C Rotate salt/gS/gSnm1 |
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cnh |
1.10 |
IF ( saltStepping ) THEN |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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salt(i,j,k,bi,bj)=gSNm1(i,j,k,bi,bj) |
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gSNm1(i,j,k,bi,bj)=gS(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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cnh |
1.10 |
ENDIF |
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RETURN |
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END |
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