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C $Header: /u/gcmpack/models/MITgcmUV/model/src/calc_div_ghat.F,v 1.3 1998/09/07 15:36:24 cnh Exp $ |
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#include "CPP_EEOPTIONS.h" |
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C /==========================================================\ |
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C | S/R CALC_DIV_GHAT | |
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C | o Form the right hand-side of the surface pressure eqn. | |
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C \==========================================================/ |
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SUBROUTINE CALC_DIV_GHAT( |
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I bi,bj,iMin,iMax,jMin,jMax, |
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I K, |
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I xA,yA, |
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I myThid) |
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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 "DYNVARS.h" |
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#include "FFIELDS.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 "CG2D.h" |
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C == Routine arguments == |
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C pH - Hydrostatic pressure |
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C bi, bj, iMin, iMax, jMin, jMax - Range of points for which calculation |
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C results will be set. |
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C kUp, kDown, kM1 - Index for upper and lower layers. |
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C myThid - Instance number for this innvocation of CALC_MOM_RHS |
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INTEGER bi,bj,iMin,iMax,jMin,jMax |
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INTEGER K |
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_RS xA (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RS yA (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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INTEGER myThid |
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C == Local variables == |
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INTEGER i,j |
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_RL pf (1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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1.4 |
CcnhDEbugStarts |
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INTEGER i1, j1 |
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CcnhDebugEnds |
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C-- Pressure equation source term |
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C Term is the vertical integral of the divergence of the |
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C time tendency terms along with a relaxation term that |
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C pulls div(U) + dh/dt back toward zero. |
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IF ( k .EQ. Nr ) THEN |
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C Initialise source term on first pass |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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C cg2d_b(i,j,bi,bj) = cg2d_b(i,j,bi,bj) |
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C & -freeSurfFac*_rA(i,j,bi,bj)* |
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C & cg2d_x(I ,J ,bi,bj)/deltaTMom/deltaTMom |
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cg2d_b(i,j,bi,bj) = |
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& -freeSurfFac*_rA(i,j,bi,bj)*horiVertRatio* |
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& cg2d_x(I ,J ,bi,bj)/deltaTMom/deltaTMom |
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ENDDO |
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ENDDO |
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ENDIF |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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pf(i,j) = xA(i,j)*gUNm1(i,j,k,bi,bj) / deltaTmom |
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ENDDO |
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ENDDO |
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DO j=1,sNy |
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DO i=1,sNx |
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cg2d_b(i,j,bi,bj) = cg2d_b(i,j,bi,bj) + |
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& pf(i+1,j)-pf(i,j) |
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ENDDO |
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ENDDO |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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pf(i,j) = yA(i,j)*gVNm1(i,j,k,bi,bj) / deltatmom |
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ENDDO |
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ENDDO |
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DO j=1,sNy |
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DO i=1,sNx |
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cg2d_b(i,j,bi,bj) = cg2d_b(i,j,bi,bj) + |
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& pf(i,j+1)-pf(i,j) |
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ENDDO |
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ENDDO |
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1.4 |
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CcnhDebugSTarts |
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C IF ( K .EQ. 10 .OR. K .EQ. 1 ) THEN |
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C i1 = 54 |
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C j1 = 26 |
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C WRITE(0,*) ' @ I = ', i1, ' , J = ', j1, ' K = ', K |
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C WRITE(0,*) ' cg2d_b = ', cg2d_b(i1,j1,bi,bj) |
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C ENDIF |
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CcnhDebugEnds |
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1.1 |
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RETURN |
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END |
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