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gforget |
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C $Header: /u/gcmpack/MITgcm/pkg/seaice/seaice_init_varia.F,v 1.6 2007/04/27 15:50:14 jmc Exp $ |
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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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#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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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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_RS mask_uice |
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INTEGER myIter, myTile |
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cif( Helper variable for determining the fraction of sw radiation |
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cif( penetrating the model's shallowest layer |
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_RL swfracba(two) |
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_RL FACTORM,dummyTime |
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INTEGER IMAX |
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IMAX = 2 |
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FACTORM = -1.0 |
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dummyTime = 1.0 |
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swfracba(1) = abs(rF(1)) |
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swfracba(2) = abs(rF(2)) |
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CALL SWFRAC( |
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I IMAX,FACTORM, |
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I dummyTime,myThid, |
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U swfracba) |
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SWFRACB = swfracba(2) |
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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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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)=ZERO |
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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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#ifndef SEAICE_CGRID |
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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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#else |
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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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#endif /* not SEAICE_CGRID */ |
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ENDDO |
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ENDDO |
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#ifdef ALLOW_EXCH2 |
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#ifdef SEAICE_CGRID |
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#else |
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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)=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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ENDIF |
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#endif |
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#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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#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)=ZERO |
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VICEC (I,J,bi,bj)=ZERO |
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DWATN (I,J,bi,bj)=ZERO |
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#ifndef SEAICE_CGRID |
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DAIRN (I,J,bi,bj)=ZERO |
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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)=ZERO |
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GWATY (I,J,bi,bj)=ZERO |
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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)) |
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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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C-- Set model variables to initial/restart conditions |
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IF ( nIter0 .NE. 0 ) THEN |
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CALL SEAICE_READ_PICKUP ( myThid ) |
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ELSE |
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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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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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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) THEN |
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AREA(I,J,k,bi,bj)=ONE |
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ELSE |
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HSNOW(I,J,bi,bj)=ZERO |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDIF |
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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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IF ( useRealFreshWaterFlux .AND. .NOT.useThSIce ) 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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sIceLoad(i,j,bi,bj) = HEFF(I,J,1,bi,bj)*SEAICE_rhoIce |
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& + HSNOW(I,J,bi,bj)* 330. _d 0 |
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ENDDO |
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ENDDO |
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ENDIF |
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ENDDO |
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ENDDO |
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RETURN |
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END |
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