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C $Header: /u/gcmpack/MITgcm/verification/aim.5l_cs/code/mom_vi_hfacz_diss.F,v 1.1 2002/01/09 00:28:56 jmc Exp $ |
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C $Name: $ |
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|
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#include "CPP_OPTIONS.h" |
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|
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SUBROUTINE MOM_VI_HFACZ_DISS( |
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I bi,bj,k, |
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O hFacZ,r_hFacZ, |
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I myThid) |
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IMPLICIT NONE |
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C |
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C Compute hFactor (and reciprol) at the corner (Z-point) |
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C used for vorticity,divergence form of viscous term |
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C (also in Shap_S2 formulation) |
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C |
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|
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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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|
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C == Routine arguments == |
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INTEGER bi,bj,k |
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_RS hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RS r_hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RS hFacZOpen |
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INTEGER myThid |
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|
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C == Local variables == |
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INTEGER I,J |
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|
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C-- Calculate open water fraction at vorticity points |
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DO i=1-Olx,sNx+Olx |
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hFacZ(i,1-Oly)=0. |
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r_hFacZ(i,1-Oly)=0. |
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ENDDO |
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|
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DO j=2-Oly,sNy+Oly |
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hFacZ(1-Olx,j)=0. |
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r_hFacZ(1-Olx,j)=0. |
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DO i=2-Olx,sNx+Olx |
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hFacZOpen=MIN(_hFacW(i,j,k,bi,bj) |
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& + _hFacW(i,j-1,k,bi,bj) |
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& , _hFacS(i,j,k,bi,bj) |
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& + _hFacS(i-1,j,k,bi,bj) |
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& ) |
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hFacZ(i,j)=0.5*hFacZOpen |
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IF (hFacZ(i,j).EQ.0.) THEN |
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r_hFacZ(i,j)=0. |
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ELSE |
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r_hFacZ(i,j)=1./hFacZ(i,j) |
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ENDIF |
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ENDDO |
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ENDDO |
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|
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C- Special stuff for Cubed Sphere |
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C above formula is ambiguous when only 3 edges instead of 4, |
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C => return to min-3 definition at the Cubed-Sphere corners |
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IF (useCubedSphereExchange) THEN |
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DO j=1,sNy+1,sNy |
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DO i=1,sNx+1,sNx |
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hFacZOpen=MIN( _hFacW(i,j,k,bi,bj) |
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& , _hFacW(i,j-1,k,bi,bj) |
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& , _hFacS(i,j,k,bi,bj) |
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& , _hFacS(i-1,j,k,bi,bj) |
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& ) |
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hFacZ(i,j)=hFacZOpen |
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IF (hFacZOpen.EQ.0.) THEN |
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r_hFacZ(i,j)=0. |
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ELSE |
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r_hFacZ(i,j)=1./hFacZOpen |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDIF |
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|
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RETURN |
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END |