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dimitri |
1.2 |
C $Header: /u/gcmpack/MITgcm_contrib/arctic40km/code/seaice_init.F,v 1.1 2005/09/01 14:16:40 dimitri Exp $ |
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dimitri |
1.1 |
C $Name: $ |
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#include "SEAICE_OPTIONS.h" |
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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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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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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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#ifdef ALLOW_SEAICE |
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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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INTEGER iG, jG |
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_RL lat, dlat, dlon, xG0, yG0 |
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_RL xGloc(1-Olx:sNx+Olx+1,1-Oly:sNy+Oly+1) |
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_RL yGloc(1-Olx:sNx+Olx+1,1-Oly:sNy+Oly+1) |
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INTEGER iGl,jGl |
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iGl(I,bi) = 1+mod(myXGlobalLo-1+(bi-1)*sNx+I+Olx*Nx-1,Nx) |
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jGl(J,bj) = 1+mod(myYGlobalLo-1+(bj-1)*sNy+J+Oly*Ny-1,Ny) |
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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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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_JZ- The following is for a rotated model grid (for the UW regional arctic model) |
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C For each tile ... |
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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-- "Global" index (place holder) |
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jG = myYGlobalLo + (bj-1)*sNy |
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iG = myXGlobalLo + (bi-1)*sNx |
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C-- First find coordinate of tile corner (meaning outer corner of halo) |
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xG0 = thetaMin |
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C Find the X-coordinate of the outer grid-line of the "real" tile |
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DO i=1, iG-1 |
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xG0 = xG0 + delX(i) |
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ENDDO |
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C Back-step to the outer grid-line of the "halo" region |
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DO i=1, Olx |
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xG0 = xG0 - delX( 1+mod(Olx*Nx-1+iG-i,Nx) ) |
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ENDDO |
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C Find the Y-coordinate of the outer grid-line of the "real" tile |
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yG0 = phiMin |
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DO j=1, jG-1 |
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yG0 = yG0 + delY(j) |
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ENDDO |
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C Back-step to the outer grid-line of the "halo" region |
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DO j=1, Oly |
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yG0 = yG0 - delY( 1+mod(Oly*Ny-1+jG-j,Ny) ) |
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ENDDO |
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C-- Calculate coordinates of cell corners for N+1 grid-lines |
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DO J=1-Oly,sNy+Oly +1 |
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xGloc(1-Olx,J) = xG0 |
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DO I=1-Olx,sNx+Olx |
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c xGloc(I+1,J) = xGloc(I,J) + delX(1+mod(Nx-1+iG-1+i,Nx)) |
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xGloc(I+1,J) = xGloc(I,J) + delX( iGl(I,bi) ) |
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ENDDO |
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ENDDO |
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DO I=1-Olx,sNx+Olx +1 |
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yGloc(I,1-Oly) = yG0 |
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DO J=1-Oly,sNy+Oly |
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c yGloc(I,J+1) = yGloc(I,J) + delY(1+mod(Ny-1+jG-1+j,Ny)) |
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yGloc(I,J+1) = yGloc(I,J) + delY( jGl(J,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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CSUICE(i,j,bi,bj) =cos(yGloc(I,J)*deg2rad) |
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SINEICE(i,j,bi,bj) =sin(yGloc(I,J)*deg2rad) |
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TNGICE(i,j,bi,bj)=SINEICE(i,j,bi,bj)/CSUICE(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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C-- Calculate [xC,yC], coordinates of cell centers by averaging |
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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(0.25*( |
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& yGloc(I,J)+yGloc(I+1,J)+yGloc(I,J+1)+yGloc(I+1,J+1))*deg2rad) |
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SINEICE(i,j,bi,bj) =sin(0.25*( |
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& yGloc(I,J)+yGloc(I+1,J)+yGloc(I,J+1)+yGloc(I+1,J+1))*deg2rad) |
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TNGTICE(i,j,bi,bj)=SINEICE(i,j,bi,bj)/CSTICE(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO ! bi |
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ENDDO ! bj |
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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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SINEICE(i,j,bi,bj)=sin(yG(I,J,bi,bj)*deg2rad) |
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DXTICE(i,j,bi,bj)=dxF(i,j,bi,bj)/CSTICE(i,j,bi,bj) |
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DXUICE(i,j,bi,bj)=dxV(i,j,bi,bj)/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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#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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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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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_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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ENDDO |
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ENDDO |
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C-- Update overlap regions |
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_EXCH_XY_R8(UVM, myThid) |
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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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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) |
| 315 |
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|
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 316 |
|
|
DO j=1-OLy,sNy+OLy |
| 317 |
|
|
DO i=1-OLx,sNx+OLx |
| 318 |
|
|
DO k=1,3 |
| 319 |
|
|
IF(HEFF(I,J,k,bi,bj).GT.ZERO) AREA(I,J,k,bi,bj)=ONE |
| 320 |
|
|
ENDDO |
| 321 |
|
|
ENDDO |
| 322 |
|
|
ENDDO |
| 323 |
|
|
ENDDO |
| 324 |
|
|
ENDDO |
| 325 |
|
|
|
| 326 |
|
|
ENDIF |
| 327 |
|
|
|
| 328 |
|
|
C--- Complete initialization |
| 329 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
| 330 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 331 |
|
|
DO j=1-OLy,sNy+OLy |
| 332 |
|
|
DO i=1-OLx,sNx+OLx |
| 333 |
|
|
ZETA(I,J,bi,bj)=HEFF(I,J,1,bi,bj)*(1.0 _d 11) |
| 334 |
|
|
ETA(I,J,bi,bj)=ZETA(I,J,bi,bj)/4.0 _d 0 |
| 335 |
|
|
ENDDO |
| 336 |
|
|
ENDDO |
| 337 |
|
|
ENDDO |
| 338 |
|
|
ENDDO |
| 339 |
|
|
|
| 340 |
|
|
#endif /* ALLOW_SEAICE */ |
| 341 |
|
|
|
| 342 |
|
|
RETURN |
| 343 |
|
|
END |
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