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C $Header: /u/gcmpack/MITgcm/pkg/seaice/seaice_init_varia.F,v 1.14 2007/07/24 23:14:47 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 "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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#ifdef ALLOW_OBCS |
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#include "OBCS.h" |
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#include "OBCS_OPTIONS.h" |
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#endif /* ALLOW_OBCS */ |
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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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_RL obc_mask |
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|
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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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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)=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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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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ZETA(I,J,bi,bj)=0. _d 0 |
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HSNOW(I,J,bi,bj)=0. _d 0 |
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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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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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|
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#ifdef ALLOW_OBCS |
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C Apply OBCS T/S mask (taken from pkg/obcs/obcs_apply_ts.F) |
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#ifdef ALLOW_OBCS_NORTH |
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DO I=1-Olx,sNx+Olx |
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C Northern boundary |
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J_obc = OB_Jn(I,bi,bj) |
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IF (J_obc.NE.0) THEN |
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obc_mask = _maskS(I,J_obc,kSurface,bi,bj) |
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DO J = J_obc, J_obc+Oly |
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IF (obc_mask.eq.0.) HEFFM(i,j,bi,bj)=0. _d 0 |
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ENDDO |
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ENDIF |
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ENDDO |
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#endif |
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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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obc_mask = _maskS(I,J_obc+1,kSurface,bi,bj) |
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DO J = J_obc-Oly, J_obc |
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IF (obc_mask.eq.0.) HEFFM(i,j,bi,bj)=0. _d 0 |
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ENDDO |
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ENDIF |
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ENDDO |
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#endif |
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#ifdef ALLOW_OBCS_EAST |
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DO J=1-Oly,sNy+Oly |
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C Eastern boundary |
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I_obc = OB_Ie(J,bi,bj) |
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IF (I_obc.NE.0) THEN |
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obc_mask = _maskW(I_obc,J,kSurface,bi,bj) |
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DO I = I_obc, I_obc+Olx |
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IF (obc_mask.eq.0.) HEFFM(i,j,bi,bj)=0. _d 0 |
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ENDDO |
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ENDIF |
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ENDDO |
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#endif |
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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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obc_mask = _maskW(I_obc+1,J,kSurface,bi,bj) |
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DO I = I_obc-Olx, I_obc |
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IF (obc_mask.eq.0.) HEFFM(i,j,bi,bj)=0. _d 0 |
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ENDDO |
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ENDIF |
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ENDDO |
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#endif |
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_EXCH_XY_R8(HEFFM, myThid) |
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#endif /* ALLOW_OBCS */ |
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|
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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_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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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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#ifndef SEAICE_CGRID |
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DAIRN (I,J,bi,bj)=0. _d 0 |
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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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GWATX (I,J,bi,bj)=0. _d 0 |
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GWATY (I,J,bi,bj)=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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#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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#if (defined (SEAICE_CGRID) && defined (SEAICE_ALLOW_EVP)) |
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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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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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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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|
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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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|
| 285 |
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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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) |
| 297 |
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. |
| 306 |
IF ( HeffFile .NE. ' ' ) THEN |
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_BEGIN_MASTER( myThid ) |
| 308 |
CALL READ_FLD_XY_RL( HeffFile, ' ', ZETA, 0, myThid ) |
| 309 |
_END_MASTER(myThid) |
| 310 |
_EXCH_XY_R8(ZETA,myThid) |
| 311 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 312 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 313 |
DO j=1-OLy,sNy+OLy |
| 314 |
DO i=1-OLx,sNx+OLx |
| 315 |
DO k=1,3 |
| 316 |
HEFF(I,J,k,bi,bj) = MAX(ZETA(i,j,bi,bj),ZERO) |
| 317 |
ENDDO |
| 318 |
ENDDO |
| 319 |
ENDDO |
| 320 |
ENDDO |
| 321 |
ENDDO |
| 322 |
ENDIF |
| 323 |
|
| 324 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 325 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 326 |
DO j=1-OLy,sNy+OLy |
| 327 |
DO i=1-OLx,sNx+OLx |
| 328 |
DO k=1,3 |
| 329 |
IF(HEFF(I,J,k,bi,bj).GT.ZERO) |
| 330 |
& AREA(I,J,k,bi,bj)=ONE |
| 331 |
ENDDO |
| 332 |
ENDDO |
| 333 |
ENDDO |
| 334 |
ENDDO |
| 335 |
ENDDO |
| 336 |
|
| 337 |
C-- Read initial area thickness from file if available. |
| 338 |
IF ( AreaFile .NE. ' ' ) THEN |
| 339 |
_BEGIN_MASTER( myThid ) |
| 340 |
CALL READ_FLD_XY_RL( AreaFile, ' ', ZETA, 0, myThid ) |
| 341 |
_END_MASTER(myThid) |
| 342 |
_EXCH_XY_R8(ZETA,myThid) |
| 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 |
DO k=1,3 |
| 348 |
AREA(I,J,k,bi,bj) = MAX(ZETA(i,j,bi,bj),ZERO) |
| 349 |
AREA(I,J,k,bi,bj) = MIN(AREA(i,j,k,bi,bj),ONE) |
| 350 |
IF ( AREA(I,J,k,bi,bj) .LE. ZERO ) |
| 351 |
& HEFF(I,J,k,bi,bj) = ZERO |
| 352 |
IF ( HEFF(I,J,k,bi,bj) .LE. ZERO ) |
| 353 |
& AREA(I,J,k,bi,bj) = ZERO |
| 354 |
ENDDO |
| 355 |
ENDDO |
| 356 |
ENDDO |
| 357 |
ENDDO |
| 358 |
ENDDO |
| 359 |
ENDIF |
| 360 |
|
| 361 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 362 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 363 |
DO j=1-OLy,sNy+OLy |
| 364 |
DO i=1-OLx,sNx+OLx |
| 365 |
HSNOW(I,J,bi,bj)=0.2*AREA(i,j,1,bi,bj) |
| 366 |
ENDDO |
| 367 |
ENDDO |
| 368 |
ENDDO |
| 369 |
ENDDO |
| 370 |
|
| 371 |
C-- Read initial snow thickness from file if available. |
| 372 |
IF ( HsnowFile .NE. ' ' ) THEN |
| 373 |
_BEGIN_MASTER( myThid ) |
| 374 |
CALL READ_FLD_XY_RL( HsnowFile, ' ', ZETA, 0, myThid ) |
| 375 |
_END_MASTER(myThid) |
| 376 |
_EXCH_XY_R8(ZETA,myThid) |
| 377 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 378 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 379 |
DO j=1-OLy,sNy+OLy |
| 380 |
DO i=1-OLx,sNx+OLx |
| 381 |
HSNOW(I,J,bi,bj) = MAX(ZETA(i,j,bi,bj),ZERO) |
| 382 |
ENDDO |
| 383 |
ENDDO |
| 384 |
ENDDO |
| 385 |
ENDDO |
| 386 |
ENDIF |
| 387 |
|
| 388 |
ENDIF |
| 389 |
|
| 390 |
C--- Complete initialization |
| 391 |
PSTAR = SEAICE_strength |
| 392 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 393 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 394 |
DO j=1-OLy,sNy+OLy |
| 395 |
DO i=1-OLx,sNx+OLx |
| 396 |
ZETA(I,J,bi,bj)=HEFF(I,J,1,bi,bj)*(1.0 _d 11) |
| 397 |
ETA(I,J,bi,bj)=ZETA(I,J,bi,bj)/4.0 _d 0 |
| 398 |
PRESS0(I,J,bi,bj)=PSTAR*HEFF(I,J,1,bi,bj) |
| 399 |
& *EXP(-20.0 _d 0*(ONE-AREA(I,J,1,bi,bj))) |
| 400 |
ZMAX(I,J,bi,bj)=(5.0 _d +12/(2.0 _d +04))*PRESS0(I,J,bi,bj) |
| 401 |
ZMIN(I,J,bi,bj)=0.0 _d 0 |
| 402 |
PRESS0(I,J,bi,bj)=PRESS0(I,J,bi,bj)*HEFFM(I,J,bi,bj) |
| 403 |
ENDDO |
| 404 |
ENDDO |
| 405 |
IF ( useRealFreshWaterFlux .AND. .NOT.useThSIce ) THEN |
| 406 |
DO j=1-OLy,sNy+OLy |
| 407 |
DO i=1-OLx,sNx+OLx |
| 408 |
sIceLoad(i,j,bi,bj) = HEFF(I,J,1,bi,bj)*SEAICE_rhoIce |
| 409 |
& + HSNOW(I,J,bi,bj)* 330. _d 0 |
| 410 |
|
| 411 |
ENDDO |
| 412 |
ENDDO |
| 413 |
ENDIF |
| 414 |
ENDDO |
| 415 |
ENDDO |
| 416 |
|
| 417 |
RETURN |
| 418 |
END |
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