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C $Header: /u/gcmpack/MITgcm/pkg/seaice/seaice_init_varia.F,v 1.32 2008/10/11 20:37:05 heimbach 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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GWATX(i,j,bi,bj) = 0. _d 0 |
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GWATY(i,j,bi,bj) = 0. _d 0 |
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KGEO(i,j,bi,bj) = 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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#ifdef SEAICE_AGE |
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ICEAGE(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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TAUX(i,j,bi,bj) = 0. _d 0 |
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TAUY(i,j,bi,bj) = 0. _d 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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saltWtrIce(i,j,bi,bj) = 0. _d 0 |
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frWtrIce(i,j,bi,bj) = 0. _d 0 |
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frWtrAtm(i,j,bi,bj) = 0. _d 0 |
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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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#ifndef SEAICE_CGRID |
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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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#endif /* SEAICE_CGRID */ |
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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 |
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IF ( .NOT. ( startTime .EQ. baseTime .AND. nIter0 .EQ. 0 |
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& .AND. pickupSuff .EQ. ' ') ) 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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|
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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 |
310 |
DO i=1-OLx,sNx+OLx |
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TMIX(i,j,bi,bj)=TICE(i,j,bi,bj) |
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DO k=1,3 |
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HEFF(i,j,k,bi,bj)=SEAICE_initialHEFF*HEFFM(i,j,bi,bj) |
314 |
UICE(i,j,k,bi,bj)=ZERO |
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VICE(i,j,k,bi,bj)=ZERO |
316 |
ENDDO |
317 |
ENDDO |
318 |
ENDDO |
319 |
ENDDO |
320 |
ENDDO |
321 |
|
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C-- Read initial sea-ice thickness from file if available. |
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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) |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
328 |
DO j=1-OLy,sNy+OLy |
329 |
DO i=1-OLx,sNx+OLx |
330 |
DO k=1,3 |
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HEFF(i,j,k,bi,bj) = MAX(ZETA(i,j,bi,bj),ZERO) |
332 |
ENDDO |
333 |
ENDDO |
334 |
ENDDO |
335 |
ENDDO |
336 |
ENDDO |
337 |
ENDIF |
338 |
|
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DO bj=myByLo(myThid),myByHi(myThid) |
340 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
341 |
DO j=1-OLy,sNy+OLy |
342 |
DO i=1-OLx,sNx+OLx |
343 |
DO k=1,3 |
344 |
IF(HEFF(i,j,k,bi,bj).GT.ZERO) |
345 |
& AREA(i,j,k,bi,bj)=ONE |
346 |
ENDDO |
347 |
ENDDO |
348 |
ENDDO |
349 |
ENDDO |
350 |
ENDDO |
351 |
|
352 |
C-- Read initial sea-ice area from file if available. |
353 |
IF ( AreaFile .NE. ' ' ) THEN |
354 |
CALL READ_FLD_XY_RL( AreaFile, ' ', ZETA, 0, myThid ) |
355 |
_EXCH_XY_R8(ZETA,myThid) |
356 |
DO bj=myByLo(myThid),myByHi(myThid) |
357 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
358 |
DO j=1-OLy,sNy+OLy |
359 |
DO i=1-OLx,sNx+OLx |
360 |
DO k=1,3 |
361 |
AREA(i,j,k,bi,bj) = MAX(ZETA(i,j,bi,bj),ZERO) |
362 |
AREA(i,j,k,bi,bj) = MIN(AREA(i,j,k,bi,bj),ONE) |
363 |
IF ( AREA(i,j,k,bi,bj) .LE. ZERO ) |
364 |
& HEFF(i,j,k,bi,bj) = ZERO |
365 |
IF ( HEFF(i,j,k,bi,bj) .LE. ZERO ) |
366 |
& AREA(i,j,k,bi,bj) = ZERO |
367 |
ENDDO |
368 |
ENDDO |
369 |
ENDDO |
370 |
ENDDO |
371 |
ENDDO |
372 |
ENDIF |
373 |
|
374 |
DO bj=myByLo(myThid),myByHi(myThid) |
375 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
376 |
DO j=1-OLy,sNy+OLy |
377 |
DO i=1-OLx,sNx+OLx |
378 |
HSNOW(i,j,bi,bj)=0.2*AREA(i,j,1,bi,bj) |
379 |
ENDDO |
380 |
ENDDO |
381 |
ENDDO |
382 |
ENDDO |
383 |
|
384 |
C-- Read initial snow thickness from file if available. |
385 |
IF ( HsnowFile .NE. ' ' ) THEN |
386 |
CALL READ_FLD_XY_RL( HsnowFile, ' ', ZETA, 0, myThid ) |
387 |
_EXCH_XY_R8(ZETA,myThid) |
388 |
DO bj=myByLo(myThid),myByHi(myThid) |
389 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
390 |
DO j=1-OLy,sNy+OLy |
391 |
DO i=1-OLx,sNx+OLx |
392 |
HSNOW(i,j,bi,bj) = MAX(ZETA(i,j,bi,bj),ZERO) |
393 |
ENDDO |
394 |
ENDDO |
395 |
ENDDO |
396 |
ENDDO |
397 |
ENDIF |
398 |
|
399 |
#ifdef SEAICE_SALINITY |
400 |
DO bj=myByLo(myThid),myByHi(myThid) |
401 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
402 |
DO j=1-OLy,sNy+OLy |
403 |
DO i=1-OLx,sNx+OLx |
404 |
HSALT(i,j,bi,bj)=HEFF(i,j,1,bi,bj)*salt(i,j,1,bi,bj)* |
405 |
& ICE2WATR*rhoConstFresh*SEAICE_salinity |
406 |
ENDDO |
407 |
ENDDO |
408 |
ENDDO |
409 |
ENDDO |
410 |
|
411 |
C-- Read initial sea ice salinity from file if available. |
412 |
IF ( HsaltFile .NE. ' ' ) THEN |
413 |
CALL READ_FLD_XY_RL( HsaltFile, ' ', ZETA, 0, myThid ) |
414 |
_EXCH_XY_R8(ZETA,myThid) |
415 |
DO bj=myByLo(myThid),myByHi(myThid) |
416 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
417 |
DO j=1-OLy,sNy+OLy |
418 |
DO i=1-OLx,sNx+OLx |
419 |
HSALT(i,j,bi,bj) = ZETA(i,j,bi,bj) |
420 |
ENDDO |
421 |
ENDDO |
422 |
ENDDO |
423 |
ENDDO |
424 |
ENDIF |
425 |
#endif /* SEAICE_SALINITY */ |
426 |
|
427 |
#ifdef SEAICE_AGE |
428 |
C-- Read initial sea ice age from file if available. |
429 |
IF ( IceAgeFile .NE. ' ' ) THEN |
430 |
CALL READ_FLD_XY_RL( IceAgeFile, ' ', ZETA, 0, myThid ) |
431 |
_EXCH_XY_R8(ZETA,myThid) |
432 |
DO bj=myByLo(myThid),myByHi(myThid) |
433 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
434 |
DO j=1-OLy,sNy+OLy |
435 |
DO i=1-OLx,sNx+OLx |
436 |
ICEAGE(i,j,bi,bj) = ZETA(i,j,bi,bj) |
437 |
ENDDO |
438 |
ENDDO |
439 |
ENDDO |
440 |
ENDDO |
441 |
ENDIF |
442 |
#endif /* SEAICE_AGE */ |
443 |
|
444 |
ENDIF |
445 |
|
446 |
C--- Complete initialization |
447 |
PSTAR = SEAICE_strength |
448 |
DO bj=myByLo(myThid),myByHi(myThid) |
449 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
450 |
DO j=1-OLy,sNy+OLy |
451 |
DO i=1-OLx,sNx+OLx |
452 |
ZETA(i,j,bi,bj)=HEFF(i,j,1,bi,bj)*(1.0 _d 11) |
453 |
ETA(i,j,bi,bj)=ZETA(i,j,bi,bj)/4.0 _d 0 |
454 |
PRESS0(i,j,bi,bj)=PSTAR*HEFF(i,j,1,bi,bj) |
455 |
& *EXP(-20.0 _d 0*(ONE-AREA(i,j,1,bi,bj))) |
456 |
ZMAX(i,j,bi,bj)=(5.0 _d +12/(2.0 _d +04))*PRESS0(i,j,bi,bj) |
457 |
ZMIN(i,j,bi,bj)=SEAICE_zetaMin |
458 |
PRESS0(i,j,bi,bj)=PRESS0(i,j,bi,bj)*HEFFM(i,j,bi,bj) |
459 |
ENDDO |
460 |
ENDDO |
461 |
IF ( useRealFreshWaterFlux .AND. .NOT.useThSIce ) THEN |
462 |
DO j=1-OLy,sNy+OLy |
463 |
DO i=1-OLx,sNx+OLx |
464 |
sIceLoad(i,j,bi,bj) = HEFF(i,j,1,bi,bj)*SEAICE_rhoIce |
465 |
& + HSNOW(i,j,bi,bj)* 330. _d 0 |
466 |
|
467 |
ENDDO |
468 |
ENDDO |
469 |
ENDIF |
470 |
ENDDO |
471 |
ENDDO |
472 |
|
473 |
RETURN |
474 |
END |