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C $Header: /u/gcmpack/models/MITgcmUV/pkg/mom_vecinv/mom_calc_hfacz.F,v 1.2 2001/05/29 14:01:39 adcroft Exp $ |
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C $Name: $ |
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#include "CPP_OPTIONS.h" |
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SUBROUTINE MOM_VI_MASK_VORT3( |
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I bi,bj,k, |
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O hFacZ,r_hFacZ, |
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U vort3, |
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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 recip_hFactor at the corner (Z-point) |
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C and set vort3 to zero where hFac = 0 (apply a mask) |
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C |
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C == Global variables == |
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#include "SIZE.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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_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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_RL vort3(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RS hFacZOpen |
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INTEGER myThid |
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C == Local variables == |
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INTEGER I,J |
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C-- Calculate open water fraction at vorticity points |
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c DO i=1-Olx,sNx+Olx |
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c hFacZ(i,1-Oly)=0. |
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c r_hFacZ(i,1-Oly)=0. |
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c ENDDO |
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DO j=2-Oly,sNy+Oly |
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c hFacZ(1-Olx,j)=0. |
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c 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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hFacZOpen=min(_hFacS(i,j,k,bi,bj),hFacZOpen) |
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hFacZOpen=min(_hFacS(i-1,j,k,bi,bj),hFacZOpen) |
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hFacZ(i,j)=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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vort3(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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RETURN |
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END |