1 |
dimitri |
1.22 |
C $Header: /u/gcmpack/MITgcm/pkg/seaice/seaice_init_varia.F,v 1.21 2007/09/21 06:46:30 dimitri Exp $ |
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heimbach |
1.1 |
C $Name: $ |
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#include "SEAICE_OPTIONS.h" |
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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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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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dimitri |
1.21 |
#include "DYNVARS.h" |
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heimbach |
1.1 |
#include "SEAICE.h" |
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CML#include "SEAICE_GRID.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 /* ALLOW_EXCH2 */ |
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dimitri |
1.11 |
#ifdef ALLOW_OBCS |
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#include "OBCS.h" |
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jmc |
1.14 |
#include "OBCS_OPTIONS.h" |
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dimitri |
1.11 |
#endif /* ALLOW_OBCS */ |
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heimbach |
1.1 |
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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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C === Local variables === |
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C i,j,k,bi,bj - Loop counters |
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INTEGER i, j, k, bi, bj |
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mlosch |
1.8 |
_RL PSTAR |
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heimbach |
1.1 |
_RS mask_uice |
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INTEGER myIter, myTile |
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dimitri |
1.11 |
#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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heimbach |
1.1 |
cph( |
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cph make sure TAF sees proper initialisation |
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cph to avoid partial recomputation issues |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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c |
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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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heimbach |
1.10 |
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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heimbach |
1.1 |
ENDDO |
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ENDDO |
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ENDDO |
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c |
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DO J=1-OLy,sNy+OLy |
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DO I=1-OLx,sNx+OLx |
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heimbach |
1.10 |
ZETA(I,J,bi,bj)=0. _d 0 |
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HSNOW(I,J,bi,bj)=0. _d 0 |
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dimitri |
1.18 |
#ifdef SEAICE_SALINITY |
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HSALT(I,J,bi,bj)=0. _d 0 |
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#endif |
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heimbach |
1.1 |
ENDDO |
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ENDDO |
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c |
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ENDDO |
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ENDDO |
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cph) |
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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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heimbach |
1.10 |
IF (_hFacC(i,j,1,bi,bj).eq.0.) HEFFM(i,j,bi,bj)=0. _d 0 |
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heimbach |
1.1 |
ENDDO |
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ENDDO |
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dimitri |
1.22 |
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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dimitri |
1.11 |
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#ifdef ALLOW_OBCS |
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dimitri |
1.16 |
IF (useOBCS) THEN |
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dimitri |
1.22 |
C-- If OBCS is turned on, close southern and western boundaries |
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dimitri |
1.11 |
#ifdef ALLOW_OBCS_SOUTH |
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dimitri |
1.16 |
DO I=1-Olx,sNx+Olx |
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dimitri |
1.11 |
C Southern boundary |
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dimitri |
1.16 |
J_obc = OB_Js(I,bi,bj) |
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IF (J_obc.NE.0) THEN |
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dimitri |
1.22 |
#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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dimitri |
1.16 |
ENDIF |
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ENDDO |
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dimitri |
1.22 |
#endif /* ALLOW_OBCS_SOUTH */ |
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dimitri |
1.11 |
#ifdef ALLOW_OBCS_WEST |
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dimitri |
1.16 |
DO J=1-Oly,sNy+Oly |
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dimitri |
1.11 |
C Western boundary |
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dimitri |
1.16 |
I_obc=OB_Iw(J,bi,bj) |
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IF (I_obc.NE.0) THEN |
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dimitri |
1.22 |
#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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dimitri |
1.16 |
ENDIF |
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ENDDO |
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dimitri |
1.22 |
#endif /* ALLOW_OBCS_WEST */ |
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dimitri |
1.16 |
ENDIF |
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dimitri |
1.11 |
#endif /* ALLOW_OBCS */ |
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heimbach |
1.1 |
#ifdef ALLOW_EXCH2 |
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dimitri |
1.11 |
#ifndef SEAICE_CGRID |
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heimbach |
1.1 |
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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heimbach |
1.10 |
UVM(i,j,bi,bj)=0. _d 0 |
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heimbach |
1.1 |
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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heimbach |
1.10 |
UVM(i,j,bi,bj)=0. _d 0 |
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heimbach |
1.1 |
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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heimbach |
1.10 |
UVM(i,j,bi,bj)=0. _d 0 |
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heimbach |
1.1 |
ENDDO |
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ENDIF |
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ENDIF |
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dimitri |
1.11 |
#endif /* SEAICE_CGRID */ |
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heimbach |
1.1 |
#endif /* ALLOW_EXCH2 */ |
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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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mlosch |
1.2 |
#ifdef SEAICE_MULTICATEGORY |
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heimbach |
1.1 |
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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mlosch |
1.2 |
#endif /* SEAICE_MULTICATEGORY */ |
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heimbach |
1.10 |
UICEC (I,J,bi,bj)=0. _d 0 |
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VICEC (I,J,bi,bj)=0. _d 0 |
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DWATN (I,J,bi,bj)=0. _d 0 |
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heimbach |
1.1 |
#ifndef SEAICE_CGRID |
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heimbach |
1.10 |
DAIRN (I,J,bi,bj)=0. _d 0 |
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heimbach |
1.1 |
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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heimbach |
1.10 |
GWATX (I,J,bi,bj)=0. _d 0 |
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GWATY (I,J,bi,bj)=0. _d 0 |
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heimbach |
1.1 |
ENDDO |
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ENDDO |
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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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ENDDO |
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ENDDO |
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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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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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#if (defined (SEAICE_CGRID) && defined (SEAICE_ALLOW_EVP)) |
249 |
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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 |
253 |
mlosch |
1.5 |
stressDivergenceX(I,J,bi,bj) = 0. _d 0 |
254 |
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stressDivergenceY(I,J,bi,bj) = 0. _d 0 |
255 |
heimbach |
1.1 |
seaice_sigma1 (I,J,bi,bj) = 0. _d 0 |
256 |
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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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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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#endif /* SEAICE_ALLOW_EVP and SEAICE_CGRID */ |
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C-- Set model variables to initial/restart conditions |
265 |
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IF ( nIter0 .NE. 0 ) THEN |
266 |
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CALL SEAICE_READ_PICKUP ( myThid ) |
268 |
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ELSE |
270 |
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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 |
275 |
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YNEG(I,J,bi,bj)=ZERO |
276 |
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TMIX(I,J,bi,bj)=TICE(I,J,bi,bj) |
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DO k=1,3 |
278 |
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HEFF(I,J,k,bi,bj)=SEAICE_initialHEFF*HEFFM(i,j,bi,bj) |
279 |
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UICE(I,J,k,bi,bj)=ZERO |
280 |
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VICE(I,J,k,bi,bj)=ZERO |
281 |
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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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C-- Read initial sea-ice thickness from file if available. |
288 |
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IF ( HeffFile .NE. ' ' ) THEN |
289 |
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_BEGIN_MASTER( myThid ) |
290 |
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CALL READ_FLD_XY_RL( HeffFile, ' ', ZETA, 0, myThid ) |
291 |
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_END_MASTER(myThid) |
292 |
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_EXCH_XY_R8(ZETA,myThid) |
293 |
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DO bj=myByLo(myThid),myByHi(myThid) |
294 |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
295 |
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DO j=1-OLy,sNy+OLy |
296 |
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DO i=1-OLx,sNx+OLx |
297 |
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DO k=1,3 |
298 |
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HEFF(I,J,k,bi,bj) = MAX(ZETA(i,j,bi,bj),ZERO) |
299 |
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ENDDO |
300 |
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ENDDO |
301 |
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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 bj=myByLo(myThid),myByHi(myThid) |
307 |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
308 |
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DO j=1-OLy,sNy+OLy |
309 |
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DO i=1-OLx,sNx+OLx |
310 |
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DO k=1,3 |
311 |
mlosch |
1.7 |
IF(HEFF(I,J,k,bi,bj).GT.ZERO) |
312 |
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& AREA(I,J,k,bi,bj)=ONE |
313 |
heimbach |
1.1 |
ENDDO |
314 |
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ENDDO |
315 |
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ENDDO |
316 |
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ENDDO |
317 |
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ENDDO |
318 |
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319 |
dimitri |
1.9 |
C-- Read initial area thickness from file if available. |
320 |
mlosch |
1.7 |
IF ( AreaFile .NE. ' ' ) THEN |
321 |
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_BEGIN_MASTER( myThid ) |
322 |
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CALL READ_FLD_XY_RL( AreaFile, ' ', ZETA, 0, myThid ) |
323 |
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_END_MASTER(myThid) |
324 |
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_EXCH_XY_R8(ZETA,myThid) |
325 |
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DO bj=myByLo(myThid),myByHi(myThid) |
326 |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
327 |
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DO j=1-OLy,sNy+OLy |
328 |
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DO i=1-OLx,sNx+OLx |
329 |
|
|
DO k=1,3 |
330 |
|
|
AREA(I,J,k,bi,bj) = MAX(ZETA(i,j,bi,bj),ZERO) |
331 |
|
|
AREA(I,J,k,bi,bj) = MIN(AREA(i,j,k,bi,bj),ONE) |
332 |
|
|
IF ( AREA(I,J,k,bi,bj) .LE. ZERO ) |
333 |
|
|
& HEFF(I,J,k,bi,bj) = ZERO |
334 |
|
|
IF ( HEFF(I,J,k,bi,bj) .LE. ZERO ) |
335 |
|
|
& AREA(I,J,k,bi,bj) = ZERO |
336 |
|
|
ENDDO |
337 |
|
|
ENDDO |
338 |
|
|
ENDDO |
339 |
|
|
ENDDO |
340 |
|
|
ENDDO |
341 |
|
|
ENDIF |
342 |
|
|
|
343 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
344 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
345 |
|
|
DO j=1-OLy,sNy+OLy |
346 |
|
|
DO i=1-OLx,sNx+OLx |
347 |
dimitri |
1.9 |
HSNOW(I,J,bi,bj)=0.2*AREA(i,j,1,bi,bj) |
348 |
mlosch |
1.7 |
ENDDO |
349 |
|
|
ENDDO |
350 |
|
|
ENDDO |
351 |
|
|
ENDDO |
352 |
dimitri |
1.9 |
|
353 |
|
|
C-- Read initial snow thickness from file if available. |
354 |
|
|
IF ( HsnowFile .NE. ' ' ) THEN |
355 |
|
|
_BEGIN_MASTER( myThid ) |
356 |
|
|
CALL READ_FLD_XY_RL( HsnowFile, ' ', ZETA, 0, myThid ) |
357 |
|
|
_END_MASTER(myThid) |
358 |
|
|
_EXCH_XY_R8(ZETA,myThid) |
359 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
360 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
361 |
|
|
DO j=1-OLy,sNy+OLy |
362 |
|
|
DO i=1-OLx,sNx+OLx |
363 |
|
|
HSNOW(I,J,bi,bj) = MAX(ZETA(i,j,bi,bj),ZERO) |
364 |
|
|
ENDDO |
365 |
|
|
ENDDO |
366 |
|
|
ENDDO |
367 |
|
|
ENDDO |
368 |
|
|
ENDIF |
369 |
dimitri |
1.18 |
|
370 |
|
|
#ifdef SEAICE_SALINITY |
371 |
dimitri |
1.20 |
DO bj=myByLo(myThid),myByHi(myThid) |
372 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
373 |
|
|
DO J=1-OLy,sNy+OLy |
374 |
|
|
DO I=1-OLx,sNx+OLx |
375 |
dimitri |
1.21 |
HSALT(I,J,bi,bj)=HEFF(I,J,1,bi,bj)*salt(I,J,1,bi,bj)* |
376 |
dimitri |
1.20 |
& ICE2WATR*rhoConstFresh*SEAICE_salinity |
377 |
|
|
ENDDO |
378 |
|
|
ENDDO |
379 |
|
|
ENDDO |
380 |
|
|
ENDDO |
381 |
|
|
|
382 |
dimitri |
1.18 |
C-- Read initial sea ice salinity from file if available. |
383 |
|
|
IF ( HsaltFile .NE. ' ' ) THEN |
384 |
|
|
_BEGIN_MASTER( myThid ) |
385 |
|
|
CALL READ_FLD_XY_RL( HsaltFile, ' ', ZETA, 0, myThid ) |
386 |
|
|
_END_MASTER(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 |
dimitri |
1.20 |
HSALT(I,J,bi,bj) = ZETA(i,j,bi,bj) |
393 |
dimitri |
1.18 |
ENDDO |
394 |
|
|
ENDDO |
395 |
|
|
ENDDO |
396 |
|
|
ENDDO |
397 |
|
|
ENDIF |
398 |
|
|
#endif /* SEAICE_SALINITY */ |
399 |
mlosch |
1.7 |
|
400 |
heimbach |
1.1 |
ENDIF |
401 |
|
|
|
402 |
|
|
C--- Complete initialization |
403 |
mlosch |
1.8 |
PSTAR = SEAICE_strength |
404 |
heimbach |
1.1 |
DO bj=myByLo(myThid),myByHi(myThid) |
405 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
406 |
|
|
DO j=1-OLy,sNy+OLy |
407 |
|
|
DO i=1-OLx,sNx+OLx |
408 |
|
|
ZETA(I,J,bi,bj)=HEFF(I,J,1,bi,bj)*(1.0 _d 11) |
409 |
|
|
ETA(I,J,bi,bj)=ZETA(I,J,bi,bj)/4.0 _d 0 |
410 |
mlosch |
1.8 |
PRESS0(I,J,bi,bj)=PSTAR*HEFF(I,J,1,bi,bj) |
411 |
|
|
& *EXP(-20.0 _d 0*(ONE-AREA(I,J,1,bi,bj))) |
412 |
|
|
ZMAX(I,J,bi,bj)=(5.0 _d +12/(2.0 _d +04))*PRESS0(I,J,bi,bj) |
413 |
mlosch |
1.19 |
ZMIN(I,J,bi,bj)=SEAICE_zetaMin |
414 |
mlosch |
1.8 |
PRESS0(I,J,bi,bj)=PRESS0(I,J,bi,bj)*HEFFM(I,J,bi,bj) |
415 |
heimbach |
1.1 |
ENDDO |
416 |
|
|
ENDDO |
417 |
|
|
IF ( useRealFreshWaterFlux .AND. .NOT.useThSIce ) THEN |
418 |
|
|
DO j=1-OLy,sNy+OLy |
419 |
|
|
DO i=1-OLx,sNx+OLx |
420 |
|
|
sIceLoad(i,j,bi,bj) = HEFF(I,J,1,bi,bj)*SEAICE_rhoIce |
421 |
|
|
& + HSNOW(I,J,bi,bj)* 330. _d 0 |
422 |
|
|
|
423 |
|
|
ENDDO |
424 |
|
|
ENDDO |
425 |
|
|
ENDIF |
426 |
|
|
ENDDO |
427 |
|
|
ENDDO |
428 |
|
|
|
429 |
|
|
RETURN |
430 |
|
|
END |