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C $Header: /u/gcmpack/MITgcm/pkg/seaice/seaice_init.F,v 1.27 2004/12/22 00:49:36 dimitri 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( myThid ) |
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C /==========================================================\ |
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C | SUBROUTINE SEAICE_INIT | |
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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 "SEAICE.h" |
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#include "SEAICE_GRID.h" |
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#include "SEAICE_DIAGS.h" |
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#include "SEAICE_PARAMS.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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|
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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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_RS mask_uice |
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INTEGER myIter, myTile |
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|
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#ifdef ALLOW_TIMEAVE |
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C Initialize averages to zero |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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CALL TIMEAVE_RESET(FUtave ,1,bi,bj,myThid) |
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CALL TIMEAVE_RESET(FVtave ,1,bi,bj,myThid) |
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CALL TIMEAVE_RESET(EmPmRtave,1,bi,bj,myThid) |
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CALL TIMEAVE_RESET(QNETtave ,1,bi,bj,myThid) |
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CALL TIMEAVE_RESET(QSWtave ,1,bi,bj,myThid) |
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CALL TIMEAVE_RESET(UICEtave ,1,bi,bj,myThid) |
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CALL TIMEAVE_RESET(VICEtave ,1,bi,bj,myThid) |
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CALL TIMEAVE_RESET(HEFFtave ,1,bi,bj,myThid) |
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CALL TIMEAVE_RESET(AREAtave ,1,bi,bj,myThid) |
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DO k=1,Nr |
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SEAICE_TimeAve(k,bi,bj)=ZERO |
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ENDDO |
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ENDDO |
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ENDDO |
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#endif /* ALLOW_TIMEAVE */ |
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|
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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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HEFF(I,J,k,bi,bj)=ZERO |
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AREA(I,J,k,bi,bj)=ZERO |
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UICE(I,J,k,bi,bj)=ZERO |
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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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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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HSNOW(I,J,bi,bj)=ZERO |
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ZETA(I,J,bi,bj)=ZERO |
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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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|
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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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CSTICE(i,j,bi,bj) =cos(yC(I,J,bi,bj)*deg2rad) |
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CSUICE(i,j,bi,bj) =cos(yG(I,J,bi,bj)*deg2rad) |
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CML( |
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C inverses of CSTICE and CSUICE. Lets hope we are never |
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C at the poles |
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IF ( CSTICE(I,J,bi,bj) .ne. 0. _d 0 ) THEN |
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RECIP_CSTICE(I,J,bi,bj) = 1./CSTICE(I,J,bi,bj) |
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ELSE |
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RECIP_CSTICE(I,J,bi,bj) =0. _d 0 |
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ENDIF |
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IF ( CSUICE(I,J,bi,bj) .ne. 0. _d 0 ) THEN |
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RECIP_CSUICE(I,J,bi,bj) = 1./CSUICE(I,J,bi,bj) |
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ELSE |
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RECIP_CSUICE(I,J,bi,bj) =0. _d 0 |
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ENDIF |
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CML) |
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SINEICE(i,j,bi,bj)=sin(yC(I,J,bi,bj)*deg2rad) |
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TNGTICE(i,j,bi,bj)=SINEICE(i,j,bi,bj)*RECIP_CSTICE(i,j,bi,bj) |
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SINEICE(i,j,bi,bj)=sin(yG(I,J,bi,bj)*deg2rad) |
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TNGICE(i,j,bi,bj) =SINEICE(i,j,bi,bj)*RECIP_CSUICE(i,j,bi,bj) |
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DXTICE(i,j,bi,bj)=dxF(i,j,bi,bj)*RECIP_CSTICE(i,j,bi,bj) |
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DXUICE(i,j,bi,bj)=dxV(i,j,bi,bj)*RECIP_CSUICE(i,j,bi,bj) |
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DYTICE(i,j,bi,bj)=dyF(i,j,bi,bj) |
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DYUICE(i,j,bi,bj)=dyU(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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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)=ZERO |
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ENDDO |
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ENDDO |
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DO J=2-OLy,sNy+OLy |
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DO I=2-OLx,sNx+OLx |
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UVM(i,j,bi,bj)=ZERO |
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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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ENDDO |
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ENDDO |
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|
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#ifdef ALLOW_EXCH2 |
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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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DO J=1-OLy,sNy+OLy |
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DO I=1-OLx,sNx+OLx |
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CSTICE(i,j,bi,bj) = ONE |
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CSUICE(i,j,bi,bj) = ONE |
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CML( |
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RECIP_CSTICE(I,J,bi,bj) = ONE |
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RECIP_CSUICE(I,J,bi,bj) = ONE |
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CML) |
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TNGTICE(i,j,bi,bj)= ZERO |
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TNGICE(i,j,bi,bj) = ZERO |
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DXTICE(i,j,bi,bj) = dxF(i,j,bi,bj) |
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DXUICE(i,j,bi,bj) = dxV(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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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)=ZERO |
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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)=ZERO |
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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)=ZERO |
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ENDDO |
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ENDIF |
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C-- Make sure that DXTICE and DYTICE do not contain any zeros |
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DO J=1,sNy |
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DO I=1-OLx,0 |
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IF(DXTICE(i,j,bi,bj).EQ.0) |
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& DXTICE(i,j,bi,bj)=DXTICE(1,j,bi,bj) |
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IF(DYTICE(i,j,bi,bj).EQ.0) |
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& DYTICE(i,j,bi,bj)=DYTICE(1,j,bi,bj) |
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ENDDO |
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DO I=sNx+1,sNx+OLx |
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IF(DXTICE(i,j,bi,bj).EQ.0) |
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& DXTICE(i,j,bi,bj)=DXTICE(sNx,j,bi,bj) |
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IF(DYTICE(i,j,bi,bj).EQ.0) |
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& DYTICE(i,j,bi,bj)=DYTICE(sNx,j,bi,bj) |
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ENDDO |
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ENDDO |
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DO J=1-OLy,0 |
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DO I=1-OLx,sNx+OLx |
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IF(DXTICE(i,j,bi,bj).EQ.0) |
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& DXTICE(i,j,bi,bj)=DXTICE(i,1,bi,bj) |
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IF(DYTICE(i,j,bi,bj).EQ.0) |
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& DYTICE(i,j,bi,bj)=DYTICE(i,1,bi,bj) |
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ENDDO |
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ENDDO |
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DO J=sNy+1,sNy+OLy |
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DO I=1-OLx,sNx+OLx |
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IF(DXTICE(i,j,bi,bj).EQ.0) |
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& DXTICE(i,j,bi,bj)=DXTICE(i,sNy,bi,bj) |
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IF(DYTICE(i,j,bi,bj).EQ.0) |
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& DYTICE(i,j,bi,bj)=DYTICE(i,sNy,bi,bj) |
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ENDDO |
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ENDDO |
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ENDIF |
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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_MULTILEVEL |
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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 |
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UICEC(I,J,bi,bj)=ZERO |
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VICEC(I,J,bi,bj)=ZERO |
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AMASS(I,J,bi,bj)=1000.0 _d 0 |
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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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_EXCH_XY_R8(UVM, myThid) |
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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( CSTICE , 'Current CSTICE ' , |
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& myIter, myThid ) |
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CALL PLOT_FIELD_XYRL( CSUICE , 'Current CSUICE ' , |
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& myIter, myThid ) |
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CALL PLOT_FIELD_XYRL( TNGTICE , 'Current TNGTICE ' , |
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& myIter, myThid ) |
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CALL PLOT_FIELD_XYRL( TNGICE , 'Current TNGICE ' , |
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& myIter, myThid ) |
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CALL PLOT_FIELD_XYRL( SINEICE , 'Current SINEICE ' , |
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& myIter, myThid ) |
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CALL PLOT_FIELD_XYRL( DXTICE , 'Current DXTICE ' , |
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& myIter, myThid ) |
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CALL PLOT_FIELD_XYRL( DXUICE , 'Current DXUICE ' , |
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& myIter, myThid ) |
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CALL PLOT_FIELD_XYRL( DYTICE , 'Current DYTICE ' , |
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& myIter, myThid ) |
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CALL PLOT_FIELD_XYRL( DYUICE , 'Current DYUICE ' , |
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& myIter, myThid ) |
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CALL PLOT_FIELD_XYRL( HEFFM , 'Current HEFFM ' , |
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& myIter, myThid ) |
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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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|
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C-- Set model variables to initial/restart conditions |
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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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|
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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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HSNOW(I,J,bi,bj)=0.2*HEFFM(i,j,bi,bj) |
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YNEG(I,J,bi,bj)=ZERO |
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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) |
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UICE(I,J,k,bi,bj)=ZERO |
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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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|
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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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_BEGIN_MASTER( myThid ) |
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CALL READ_FLD_XY_RL( HeffFile, ' ', ZETA, 0, myThid ) |
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_END_MASTER(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) |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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DO k=1,3 |
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HEFF(I,J,k,bi,bj) = MAX(ZETA(i,j,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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ENDIF |
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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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DO k=1,3 |
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IF(HEFF(I,J,k,bi,bj).GT.ZERO) AREA(I,J,k,bi,bj)=ONE |
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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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|
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ENDIF |
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|
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C--- Complete initialization |
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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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ZETA(I,J,bi,bj)=HEFF(I,J,1,bi,bj)*(1.0 _d 11) |
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ETA(I,J,bi,bj)=ZETA(I,J,bi,bj)/4.0 _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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RETURN |
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END |
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