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C $Header: /u/gcmpack/MITgcm/pkg/seaice/diffus.F,v 1.8 2003/10/09 04:19:20 edhill Exp $ |
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C $Name: $ |
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#include "SEAICE_OPTIONS.h" |
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CStartOfInterface |
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SUBROUTINE diffus( HEFF, DIFFA, HEFFM, DELTT, myThid ) |
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C /==========================================================\ |
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C | SUBROUTINE diffus | |
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C | o Add diffusion terms to ice mass conservation equations | |
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C |==========================================================| |
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C \==========================================================/ |
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IMPLICIT NONE |
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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 "SEAICE_GRID.h" |
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|
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C === Routine arguments === |
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C myThid - Thread no. that called this routine. |
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_RL HEFF (1-OLx:sNx+OLx,1-OLy:sNy+OLy,3,nSx,nSy) |
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_RL HEFFM (1-OLx:sNx+OLx,1-OLy:sNy+OLy, nSx,nSy) |
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_RL DIFFA (1-OLx:sNx+OLx,1-OLy:sNy+OLy, nSx,nSy) |
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_RL DELTT |
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INTEGER myThid |
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CEndOfInterface |
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C === Local variables === |
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C i,j,bi,bj - Loop counters |
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INTEGER i, j, bi, bj |
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_RL DELTXX1, DELTYY1, DELTXX, DELTYY |
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_RL HEFF1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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|
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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HEFF1(I,J,bi,bj)=0.0 _d 0 |
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ENDDO |
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ENDDO |
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|
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C NOW DO DIFFUSION WITH NUIT CONVERSION |
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DO j=1,sNy |
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DO i=1,sNx |
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DELTXX1=DELTT*DIFFA(I,J,bi,bj) |
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DELTYY1=DELTT*DIFFA(I,J,bi,bj) |
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DELTXX=DELTXX1/(DXTICE(I,J,bi,bj)*DXTICE(I,J,bi,bj) |
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& *CSTICE(I,J,bi,bj)*CSTICE(I,J,bi,bj)) |
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DELTYY=DELTYY1/(DYTICE(I,J,bi,bj)*DYTICE(I,J,bi,bj) |
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& *CSTICE(I,J,bi,bj)) |
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HEFF1(I,J,bi,bj)=DELTXX*((HEFF(I+1,J,3,bi,bj) |
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& -HEFF(I,J,3,bi,bj))*HEFFM(I+1,J,bi,bj) |
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& -(HEFF(I,J,3,bi,bj)-HEFF(I-1,J,3,bi,bj))*HEFFM(I-1,J,bi,bj)) |
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& +DELTYY*((HEFF(I,J+1,3,bi,bj)-HEFF(I,J,3,bi,bj)) |
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& *CSUICE(I+1,J+1,bi,bj)*HEFFM(I,J+1,bi,bj) |
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& -(HEFF(I,J,3,bi,bj)-HEFF(I,J-1,3,bi,bj)) |
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& *CSUICE(I+1,J,bi,bj)*HEFFM(I,J-1,bi,bj)) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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_EXCH_XY_R8(HEFF1, myThid) |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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HEFF(I,J,3,bi,bj)=HEFF1(I,J,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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|
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RETURN |
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END |
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