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C $Header: /u/gcmpack/MITgcm/pkg/seaice/seaice_init_varia.F,v 1.23 2007/11/25 21:37:37 jmc Exp $ |
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C $Name: $ |
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|
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#include "SEAICE_OPTIONS.h" |
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|
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CStartOfInterface |
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SUBROUTINE SEAICE_INIT_VARIA( myThid ) |
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C /==========================================================\ |
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C | SUBROUTINE SEAICE_INIT_VARIA | |
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C | o Initialization of sea ice model. | |
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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 "PARAMS.h" |
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#include "GRID.h" |
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#include "DYNVARS.h" |
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#include "SEAICE.h" |
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#include "SEAICE_DIAGS.h" |
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#include "SEAICE_PARAMS.h" |
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#include "FFIELDS.h" |
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#ifdef ALLOW_EXCH2 |
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# include "W2_EXCH2_TOPOLOGY.h" |
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# include "W2_EXCH2_PARAMS.h" |
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#endif |
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#ifdef ALLOW_OBCS |
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# include "OBCS_OPTIONS.h" |
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# include "OBCS.h" |
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#endif |
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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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INTEGER myThid |
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CEndOfInterface |
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|
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C === Local variables === |
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C i,j,k,bi,bj - Loop counters |
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|
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INTEGER i, j, k, bi, bj |
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_RL PSTAR |
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_RS mask_uice |
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INTEGER myIter, myTile |
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|
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#ifdef ALLOW_OBCS |
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INTEGER I_obc, J_obc, kSurface |
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IF ( buoyancyRelation .EQ. 'OCEANICP' ) THEN |
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kSurface = Nr |
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ELSE |
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kSurface = 1 |
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ENDIF |
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#endif /* ALLOW_OBCS */ |
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|
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C-- Initialise all variables in common blocks: |
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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 k=1,3 |
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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,k,bi,bj)=0. _d 0 |
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AREA(i,j,k,bi,bj)=0. _d 0 |
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UICE(i,j,k,bi,bj)=0. _d 0 |
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VICE(i,j,k,bi,bj)=0. _d 0 |
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ENDDO |
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ENDDO |
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ENDDO |
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#ifdef SEAICE_MULTICATEGORY |
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DO k=1,MULTDIM |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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TICES(i,j,k,bi,bj)=0. _d 0 |
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ENDDO |
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ENDDO |
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ENDDO |
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#endif |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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ETA (i,j,bi,bj) = 0. _d 0 |
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ZETA(i,j,bi,bj) = 0. _d 0 |
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DRAGS(i,j,bi,bj) = 0. _d 0 |
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DRAGA(i,j,bi,bj) = 0. _d 0 |
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FORCEX(i,j,bi,bj) = 0. _d 0 |
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FORCEY(i,j,bi,bj) = 0. _d 0 |
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UICEC(i,j,bi,bj) = 0. _d 0 |
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VICEC(i,j,bi,bj) = 0. _d 0 |
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#ifdef SEAICE_CGRID |
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seaiceMassC(i,j,bi,bj)=0. _d 0 |
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seaiceMassU(i,j,bi,bj)=0. _d 0 |
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seaiceMassV(i,j,bi,bj)=0. _d 0 |
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seaiceMaskU(i,j,bi,bj)=0. _d 0 |
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seaiceMaskV(i,j,bi,bj)=0. _d 0 |
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# ifdef SEAICE_ALLOW_EVP |
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stressDivergenceX(i,j,bi,bj) = 0. _d 0 |
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stressDivergenceY(i,j,bi,bj) = 0. _d 0 |
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seaice_sigma1 (i,j,bi,bj) = 0. _d 0 |
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seaice_sigma2 (i,j,bi,bj) = 0. _d 0 |
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seaice_sigma12(i,j,bi,bj) = 0. _d 0 |
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# endif /* SEAICE_ALLOW_EVP */ |
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#else /* SEAICE_CGRID */ |
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AMASS(i,j,bi,bj) = 0. _d 0 |
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DAIRN(i,j,bi,bj) = 0. _d 0 |
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UVM(i,j,bi,bj) = 0. _d 0 |
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WINDX(i,j,bi,bj) = 0. _d 0 |
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WINDY(i,j,bi,bj) = 0. _d 0 |
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#endif /* SEAICE_CGRID */ |
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DWATN(i,j,bi,bj) = 0. _d 0 |
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PRESS0(i,j,bi,bj) = 0. _d 0 |
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FORCEX0(i,j,bi,bj)= 0. _d 0 |
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FORCEY0(i,j,bi,bj)= 0. _d 0 |
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ZMAX(i,j,bi,bj) = 0. _d 0 |
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ZMIN(i,j,bi,bj) = 0. _d 0 |
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HSNOW(i,j,bi,bj) = 0. _d 0 |
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#ifdef SEAICE_SALINITY |
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HSALT(i,j,bi,bj) = 0. _d 0 |
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#endif |
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HEFFM(i,j,bi,bj) = 0. _d 0 |
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YNEG (i,j,bi,bj) = 0. _d 0 |
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RIVER(i,j,bi,bj) = 0. _d 0 |
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TMIX(i,j,bi,bj) = 0. _d 0 |
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TICE(i,j,bi,bj) = 0. _d 0 |
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GWATX(i,j,bi,bj) = 0. _d 0 |
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GWATY(i,j,bi,bj) = 0. _d 0 |
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TAUX(i,j,bi,bj) = 0. _d 0 |
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TAUY(i,j,bi,bj) = 0. _d 0 |
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KGEO(i,j,bi,bj) = 0 |
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#ifdef ALLOW_SEAICE_COST_EXPORT |
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uHeffExportCell(i,j,bi,bj) = 0. _d 0 |
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vHeffExportCell(i,j,bi,bj) = 0. _d 0 |
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#endif |
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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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C-- Initialize grid info |
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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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HEFFM(i,j,bi,bj)=ONE |
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IF (_hFacC(i,j,1,bi,bj).eq.0.) HEFFM(i,j,bi,bj)=0. _d 0 |
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ENDDO |
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ENDDO |
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DO j=1-OLy+1,sNy+OLy |
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DO i=1-OLx+1,sNx+OLx |
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#ifdef SEAICE_CGRID |
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seaiceMaskU(i,j,bi,bj)= 0.0 _d 0 |
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seaiceMaskV(i,j,bi,bj)= 0.0 _d 0 |
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mask_uice=HEFFM(i,j,bi,bj)+HEFFM(i-1,j ,bi,bj) |
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IF(mask_uice.GT.1.5) seaiceMaskU(i,j,bi,bj)=ONE |
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mask_uice=HEFFM(i,j,bi,bj)+HEFFM(i ,j-1,bi,bj) |
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IF(mask_uice.GT.1.5) seaiceMaskV(i,j,bi,bj)=ONE |
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#else |
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UVM(i,j,bi,bj)=0. _d 0 |
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mask_uice=HEFFM(i,j, bi,bj)+HEFFM(i-1,j-1,bi,bj) |
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& +HEFFM(i,j-1,bi,bj)+HEFFM(i-1,j, bi,bj) |
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IF(mask_uice.GT.3.5) UVM(i,j,bi,bj)=ONE |
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#endif /* SEAICE_CGRID */ |
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ENDDO |
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ENDDO |
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|
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#ifdef ALLOW_OBCS |
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IF (useOBCS) THEN |
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C-- If OBCS is turned on, close southern and western boundaries |
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#ifdef ALLOW_OBCS_SOUTH |
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DO i=1-Olx,sNx+Olx |
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C Southern boundary |
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J_obc = OB_Js(i,bi,bj) |
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IF (J_obc.NE.0) THEN |
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#ifdef SEAICE_CGRID |
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seaiceMaskU(i,J_obc,bi,bj)= 0.0 _d 0 |
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seaiceMaskV(i,J_obc,bi,bj)= 0.0 _d 0 |
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#else |
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UVM(i,J_obc,bi,bj)=0. _d 0 |
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#endif /* SEAICE_CGRID */ |
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ENDIF |
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ENDDO |
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#endif /* ALLOW_OBCS_SOUTH */ |
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#ifdef ALLOW_OBCS_WEST |
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DO j=1-Oly,sNy+Oly |
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C Western boundary |
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I_obc=OB_Iw(j,bi,bj) |
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IF (I_obc.NE.0) THEN |
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#ifdef SEAICE_CGRID |
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seaiceMaskU(I_obc,j,bi,bj)= 0.0 _d 0 |
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seaiceMaskV(I_obc,j,bi,bj)= 0.0 _d 0 |
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#else |
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UVM(I_obc,j,bi,bj)=0. _d 0 |
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#endif /* SEAICE_CGRID */ |
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ENDIF |
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ENDDO |
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#endif /* ALLOW_OBCS_WEST */ |
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ENDIF |
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#endif /* ALLOW_OBCS */ |
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|
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#ifdef ALLOW_EXCH2 |
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#ifndef SEAICE_CGRID |
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C-- Special stuff for cubed sphere: assume grid is rectangular and |
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C set UV mask to zero except for Arctic and Antarctic cube faces. |
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IF (useCubedSphereExchange) THEN |
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myTile = W2_myTileList(bi) |
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IF ( exch2_myFace(myTile) .EQ. 1 .OR. |
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& exch2_myFace(myTile) .EQ. 2 .OR. |
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& exch2_myFace(myTile) .EQ. 4 .OR. |
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& exch2_myFace(myTile) .EQ. 5 ) THEN |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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UVM(i,j,bi,bj)=0. _d 0 |
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ENDDO |
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ENDDO |
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ELSEIF ( exch2_isWedge(myTile) .EQ. 1 ) THEN |
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i=1 |
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DO j=1-OLy,sNy+OLy |
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UVM(i,j,bi,bj)=0. _d 0 |
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ENDDO |
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ELSEIF ( exch2_isSedge(myTile) .EQ. 1 ) THEN |
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j=1 |
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DO i=1-OLx,sNx+OLx |
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UVM(i,j,bi,bj)=0. _d 0 |
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ENDDO |
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ENDIF |
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ENDIF |
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#endif /* SEAICE_CGRID */ |
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#endif /* ALLOW_EXCH2 */ |
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|
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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TICE(i,j,bi,bj)=273.0 _d 0 |
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#ifdef SEAICE_MULTICATEGORY |
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DO k=1,MULTDIM |
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TICES(i,j,k,bi,bj)=273.0 _d 0 |
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ENDDO |
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#endif /* SEAICE_MULTICATEGORY */ |
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#ifndef SEAICE_CGRID |
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AMASS (i,j,bi,bj)=1000.0 _d 0 |
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#else |
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seaiceMassC(i,j,bi,bj)=1000.0 _d 0 |
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seaiceMassU(i,j,bi,bj)=1000.0 _d 0 |
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seaiceMassV(i,j,bi,bj)=1000.0 _d 0 |
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#endif |
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ENDDO |
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ENDDO |
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|
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C-- Choose a proxy level for geostrophic velocity, |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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#ifdef SEAICE_TEST_ICE_STRESS_1 |
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KGEO(i,j,bi,bj) = 1 |
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#else /* SEAICE_TEST_ICE_STRESS_1 */ |
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IF (klowc(i,j,bi,bj) .LT. 2) THEN |
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KGEO(i,j,bi,bj) = 1 |
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ELSE |
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KGEO(i,j,bi,bj) = 2 |
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DO WHILE ( abs(rC(KGEO(i,j,bi,bj))) .LT. 50.0 .AND. |
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& KGEO(i,j,bi,bj) .LT. (klowc(i,j,bi,bj)-1) ) |
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KGEO(i,j,bi,bj) = KGEO(i,j,bi,bj) + 1 |
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ENDDO |
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ENDIF |
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#endif /* SEAICE_TEST_ICE_STRESS_1 */ |
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ENDDO |
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ENDDO |
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|
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ENDDO |
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ENDDO |
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|
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C-- Update overlap regions |
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#ifdef SEAICE_CGRID |
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CALL EXCH_UV_XY_RL(seaiceMaskU,seaiceMaskV,.FALSE.,myThid) |
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#else |
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_EXCH_XY_R8(UVM, myThid) |
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#endif |
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|
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C-- Now lets look at all these beasts |
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IF ( debugLevel .GE. debLevB ) THEN |
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myIter=0 |
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CALL PLOT_FIELD_XYRL( HEFFM , 'Current HEFFM ' , |
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& myIter, myThid ) |
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#ifdef SEAICE_CGRID |
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CALL PLOT_FIELD_XYRL( seaiceMaskU, 'Current seaiceMaskU', |
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& myIter, myThid ) |
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CALL PLOT_FIELD_XYRL( seaiceMaskV, 'Current seaiceMaskV', |
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& myIter, myThid ) |
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#else |
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CALL PLOT_FIELD_XYRL( UVM , 'Current UVM ' , |
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& myIter, myThid ) |
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#endif |
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ENDIF |
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|
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C-- Set model variables to initial/restart conditions |
| 292 |
IF ( nIter0 .NE. 0 ) THEN |
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|
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CALL SEAICE_READ_PICKUP ( myThid ) |
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|
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ELSE |
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|
| 298 |
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 |
| 301 |
DO i=1-OLx,sNx+OLx |
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TMIX(i,j,bi,bj)=TICE(i,j,bi,bj) |
| 303 |
DO k=1,3 |
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HEFF(i,j,k,bi,bj)=SEAICE_initialHEFF*HEFFM(i,j,bi,bj) |
| 305 |
UICE(i,j,k,bi,bj)=ZERO |
| 306 |
VICE(i,j,k,bi,bj)=ZERO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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|
| 313 |
C-- Read initial sea-ice thickness from file if available. |
| 314 |
IF ( HeffFile .NE. ' ' ) THEN |
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CALL READ_FLD_XY_RL( HeffFile, ' ', ZETA, 0, myThid ) |
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_EXCH_XY_R8(ZETA,myThid) |
| 317 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 318 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 319 |
DO j=1-OLy,sNy+OLy |
| 320 |
DO i=1-OLx,sNx+OLx |
| 321 |
DO k=1,3 |
| 322 |
HEFF(i,j,k,bi,bj) = MAX(ZETA(i,j,bi,bj),ZERO) |
| 323 |
ENDDO |
| 324 |
ENDDO |
| 325 |
ENDDO |
| 326 |
ENDDO |
| 327 |
ENDDO |
| 328 |
ENDIF |
| 329 |
|
| 330 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 331 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 332 |
DO j=1-OLy,sNy+OLy |
| 333 |
DO i=1-OLx,sNx+OLx |
| 334 |
DO k=1,3 |
| 335 |
IF(HEFF(i,j,k,bi,bj).GT.ZERO) |
| 336 |
& AREA(i,j,k,bi,bj)=ONE |
| 337 |
ENDDO |
| 338 |
ENDDO |
| 339 |
ENDDO |
| 340 |
ENDDO |
| 341 |
ENDDO |
| 342 |
|
| 343 |
C-- Read initial area thickness from file if available. |
| 344 |
IF ( AreaFile .NE. ' ' ) THEN |
| 345 |
CALL READ_FLD_XY_RL( AreaFile, ' ', ZETA, 0, myThid ) |
| 346 |
_EXCH_XY_R8(ZETA,myThid) |
| 347 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 348 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 349 |
DO j=1-OLy,sNy+OLy |
| 350 |
DO i=1-OLx,sNx+OLx |
| 351 |
DO k=1,3 |
| 352 |
AREA(i,j,k,bi,bj) = MAX(ZETA(i,j,bi,bj),ZERO) |
| 353 |
AREA(i,j,k,bi,bj) = MIN(AREA(i,j,k,bi,bj),ONE) |
| 354 |
IF ( AREA(i,j,k,bi,bj) .LE. ZERO ) |
| 355 |
& HEFF(i,j,k,bi,bj) = ZERO |
| 356 |
IF ( HEFF(i,j,k,bi,bj) .LE. ZERO ) |
| 357 |
& AREA(i,j,k,bi,bj) = ZERO |
| 358 |
ENDDO |
| 359 |
ENDDO |
| 360 |
ENDDO |
| 361 |
ENDDO |
| 362 |
ENDDO |
| 363 |
ENDIF |
| 364 |
|
| 365 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 366 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 367 |
DO j=1-OLy,sNy+OLy |
| 368 |
DO i=1-OLx,sNx+OLx |
| 369 |
HSNOW(i,j,bi,bj)=0.2*AREA(i,j,1,bi,bj) |
| 370 |
ENDDO |
| 371 |
ENDDO |
| 372 |
ENDDO |
| 373 |
ENDDO |
| 374 |
|
| 375 |
C-- Read initial snow thickness from file if available. |
| 376 |
IF ( HsnowFile .NE. ' ' ) THEN |
| 377 |
CALL READ_FLD_XY_RL( HsnowFile, ' ', ZETA, 0, myThid ) |
| 378 |
_EXCH_XY_R8(ZETA,myThid) |
| 379 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 380 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 381 |
DO j=1-OLy,sNy+OLy |
| 382 |
DO i=1-OLx,sNx+OLx |
| 383 |
HSNOW(i,j,bi,bj) = MAX(ZETA(i,j,bi,bj),ZERO) |
| 384 |
ENDDO |
| 385 |
ENDDO |
| 386 |
ENDDO |
| 387 |
ENDDO |
| 388 |
ENDIF |
| 389 |
|
| 390 |
#ifdef SEAICE_SALINITY |
| 391 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 392 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 393 |
DO j=1-OLy,sNy+OLy |
| 394 |
DO i=1-OLx,sNx+OLx |
| 395 |
HSALT(i,j,bi,bj)=HEFF(i,j,1,bi,bj)*salt(i,j,1,bi,bj)* |
| 396 |
& ICE2WATR*rhoConstFresh*SEAICE_salinity |
| 397 |
ENDDO |
| 398 |
ENDDO |
| 399 |
ENDDO |
| 400 |
ENDDO |
| 401 |
|
| 402 |
C-- Read initial sea ice salinity from file if available. |
| 403 |
IF ( HsaltFile .NE. ' ' ) THEN |
| 404 |
CALL READ_FLD_XY_RL( HsaltFile, ' ', ZETA, 0, myThid ) |
| 405 |
_EXCH_XY_R8(ZETA,myThid) |
| 406 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 407 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 408 |
DO j=1-OLy,sNy+OLy |
| 409 |
DO i=1-OLx,sNx+OLx |
| 410 |
HSALT(i,j,bi,bj) = ZETA(i,j,bi,bj) |
| 411 |
ENDDO |
| 412 |
ENDDO |
| 413 |
ENDDO |
| 414 |
ENDDO |
| 415 |
ENDIF |
| 416 |
#endif /* SEAICE_SALINITY */ |
| 417 |
|
| 418 |
ENDIF |
| 419 |
|
| 420 |
C--- Complete initialization |
| 421 |
PSTAR = SEAICE_strength |
| 422 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 423 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 424 |
DO j=1-OLy,sNy+OLy |
| 425 |
DO i=1-OLx,sNx+OLx |
| 426 |
ZETA(i,j,bi,bj)=HEFF(i,j,1,bi,bj)*(1.0 _d 11) |
| 427 |
ETA(i,j,bi,bj)=ZETA(i,j,bi,bj)/4.0 _d 0 |
| 428 |
PRESS0(i,j,bi,bj)=PSTAR*HEFF(i,j,1,bi,bj) |
| 429 |
& *EXP(-20.0 _d 0*(ONE-AREA(i,j,1,bi,bj))) |
| 430 |
ZMAX(i,j,bi,bj)=(5.0 _d +12/(2.0 _d +04))*PRESS0(i,j,bi,bj) |
| 431 |
ZMIN(i,j,bi,bj)=SEAICE_zetaMin |
| 432 |
PRESS0(i,j,bi,bj)=PRESS0(i,j,bi,bj)*HEFFM(i,j,bi,bj) |
| 433 |
ENDDO |
| 434 |
ENDDO |
| 435 |
IF ( useRealFreshWaterFlux .AND. .NOT.useThSIce ) THEN |
| 436 |
DO j=1-OLy,sNy+OLy |
| 437 |
DO i=1-OLx,sNx+OLx |
| 438 |
sIceLoad(i,j,bi,bj) = HEFF(i,j,1,bi,bj)*SEAICE_rhoIce |
| 439 |
& + HSNOW(i,j,bi,bj)* 330. _d 0 |
| 440 |
|
| 441 |
ENDDO |
| 442 |
ENDDO |
| 443 |
ENDIF |
| 444 |
ENDDO |
| 445 |
ENDDO |
| 446 |
|
| 447 |
RETURN |
| 448 |
END |
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