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C $Header: /u/gcmpack/MITgcm/pkg/seaice/seaice_init_fixed.F,v 1.14 2012/02/09 03:42:32 gforget 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_FIXED( myThid ) |
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C *==========================================================* |
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C | SUBROUTINE SEAICE_INIT_FIXED |
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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 "FFIELDS.h" |
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#include "SEAICE_PARAMS.h" |
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#include "SEAICE.h" |
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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, bi, bj |
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INTEGER kSurface |
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#ifndef SEAICE_CGRID |
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_RS mask_uice |
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#endif |
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#ifdef SHORTWAVE_HEATING |
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cif Helper variable for determining the fraction of sw radiation |
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cif penetrating the model shallowest layer |
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_RL dummyTime |
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_RL swfracba(2) |
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_RL tmpFac |
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#endif /* SHORTWAVE_HEATING */ |
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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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|
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C Initialize MNC variable information for SEAICE |
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IF ( useMNC .AND. |
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& (seaice_tave_mnc.OR.seaice_dump_mnc.OR.SEAICE_mon_mnc) |
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& ) THEN |
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CALL SEAICE_MNC_INIT( myThid ) |
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ENDIF |
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|
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_BEGIN_MASTER(myThid) |
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#ifdef SHORTWAVE_HEATING |
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tmpFac = -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 2, tmpFac, |
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U swfracba, |
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I dummyTime, 0, myThid ) |
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SWFracB = swfracba(2) |
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#else /* SHORTWAVE_HEATING */ |
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SWFracB = 0. _d 0 |
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#endif /* SHORTWAVE_HEATING */ |
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_END_MASTER(myThid) |
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|
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|
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C-- efficiency of ocean-ice turbulent flux ... |
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if (SEAICEturbFluxFormula.EQ.1) then |
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c ... can be specified as fractions between 0 and 1 |
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IF ( SEAICE_availHeatFrac .EQ. UNSET_RL ) |
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& SEAICE_availHeatFrac = ONE |
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IF ( SEAICE_availHeatFracFrz .EQ. UNSET_RL ) |
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& SEAICE_availHeatFracFrz = SEAICE_availHeatFrac |
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elseif (SEAICEturbFluxFormula.EQ.2) then |
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c ... can be specified as time scales (>SEAICE_deltaTtherm) |
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IF ( SEAICE_gamma_t .EQ. UNSET_RL ) |
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& SEAICE_gamma_t=SEAICE_deltaTtherm |
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IF ( SEAICE_gamma_t_frz .EQ. UNSET_RL ) |
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& SEAICE_gamma_t_frz=SEAICE_gamma_t |
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IF ( SEAICE_gamma_t .LE. SEAICE_deltaTtherm ) THEN |
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SEAICE_availHeatFracFrz = 1. _d 0 |
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ELSE |
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SEAICE_availHeatFrac = SEAICE_deltaTtherm/SEAICE_gamma_t |
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ENDIF |
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IF ( SEAICE_gamma_t_frz .LE. SEAICE_deltaTtherm ) THEN |
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SEAICE_availHeatFracFrz = 1. _d 0 |
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ELSE |
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SEAICE_availHeatFracFrz = |
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& SEAICE_deltaTtherm/SEAICE_gamma_t_frz |
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ENDIF |
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elseif ( (SEAICEturbFluxFormula.EQ.3).OR. |
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& (SEAICEturbFluxFormula.EQ.4) ) then |
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c ... is hard-coded (after McPhee) |
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SEAICE_availHeatFrac= MCPHEE_TAPER_FAC * STANTON_NUMBER * |
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& USTAR_BASE / dRf(kSurface) * SEAICE_deltaTtherm |
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SEAICE_availHeatFracFrz=ZERO |
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endif |
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C-- tapering of ocean-ice turbulent flux as AREA increases |
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if ( (SEAICEturbFluxFormula.EQ.3).OR. |
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& (SEAICEturbFluxFormula.EQ.4) ) then |
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c hard-coded (after McPhee) |
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SEAICE_availHeatTaper = |
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& (MCPHEE_TAPER_FAC-ONE)/MCPHEE_TAPER_FAC |
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elseif (SEAICE_availHeatTaper.EQ.UNSET_RL) then |
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SEAICE_availHeatTaper = ZERO |
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endif |
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|
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C-- convert SEAICE_doOpenWaterGrowth/Melt logical switch to numerical facOpenGrow/Melt |
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facOpenGrow=0. _d 0 |
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facOpenMelt=0. _d 0 |
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if (SEAICE_doOpenWaterGrowth) facOpenGrow=1. _d 0 |
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if (SEAICE_doOpenWaterMelt) facOpenMelt=1. _d 0 |
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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) = 0. _d 0 |
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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)= 1. _d 0 |
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IF (_hFacC(i,j,kSurface,bi,bj).eq.0.) |
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& HEFFM(i,j,bi,bj)= 0. _d 0 |
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ENDDO |
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ENDDO |
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#ifndef SEAICE_CGRID |
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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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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 _d 0) UVM(i,j,bi,bj)=1. _d 0 |
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ENDDO |
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ENDDO |
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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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C coefficients for metric terms |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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#ifdef SEAICE_CGRID |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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k1AtC(I,J,bi,bj) = 0.0 _d 0 |
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k1AtZ(I,J,bi,bj) = 0.0 _d 0 |
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k2AtC(I,J,bi,bj) = 0.0 _d 0 |
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k2AtZ(I,J,bi,bj) = 0.0 _d 0 |
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ENDDO |
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ENDDO |
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IF ( usingSphericalPolarGrid .AND. SEAICEuseMetricTerms ) THEN |
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C This is the only case where tan(phi) is not zero. In this case |
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C C and U points, and Z and V points have the same phi, so that we |
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C only need a copy here. Do not use tan(YC) and tan(YG), because these |
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C can be the geographical coordinates and not the correct grid |
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C coordinates when the grid is rotated (phi/theta/psiEuler .NE. 0) |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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k2AtC(I,J,bi,bj) = - _tanPhiAtU(I,J,bi,bj)*recip_rSphere |
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k2AtZ(I,J,bi,bj) = - _tanPhiAtV(I,J,bi,bj)*recip_rSphere |
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ENDDO |
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ENDDO |
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ELSEIF ( usingCurvilinearGrid .AND. SEAICEuseMetricTerms ) THEN |
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C compute metric term coefficients from finite difference approximation |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx-1 |
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k1AtC(I,J,bi,bj) = _recip_dyF(I,J,bi,bj) |
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& * ( _dyG(I+1,J,bi,bj) - _dyG(I,J,bi,bj) ) |
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& * _recip_dxF(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+1,sNx+OLx |
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k1AtZ(I,J,bi,bj) = _recip_dyU(I,J,bi,bj) |
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& * ( _dyC(I,J,bi,bj) - _dyC(I-1,J,bi,bj) ) |
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& * _recip_dxV(I,J,bi,bj) |
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ENDDO |
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ENDDO |
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DO j=1-OLy,sNy+OLy-1 |
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DO i=1-OLx,sNx+OLx |
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k2AtC(I,J,bi,bj) = _recip_dxF(I,J,bi,bj) |
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& * ( _dxG(I,J+1,bi,bj) - _dxG(I,J,bi,bj) ) |
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& * _recip_dyF(I,J,bi,bj) |
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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,sNx+OLx |
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k2AtZ(I,J,bi,bj) = _recip_dxV(I,J,bi,bj) |
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& * ( _dxC(I,J,bi,bj) - _dxC(I,J-1,bi,bj) ) |
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& * _recip_dyU(I,J,bi,bj) |
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ENDDO |
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ENDDO |
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ENDIF |
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#else /* not SEAICE_CGRID */ |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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k1AtC(I,J,bi,bj) = 0.0 _d 0 |
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k1AtU(I,J,bi,bj) = 0.0 _d 0 |
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k1AtV(I,J,bi,bj) = 0.0 _d 0 |
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k2AtC(I,J,bi,bj) = 0.0 _d 0 |
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k2AtU(I,J,bi,bj) = 0.0 _d 0 |
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k2AtV(I,J,bi,bj) = 0.0 _d 0 |
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ENDDO |
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ENDDO |
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IF ( usingSphericalPolarGrid .AND. SEAICEuseMetricTerms ) THEN |
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C This is the only case where tan(phi) is not zero. In this case |
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C C and U points, and Z and V points have the same phi, so that we |
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C only need a copy here. Do not use tan(YC) and tan(YG), because these |
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C can be the geographical coordinates and not the correct grid |
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C coordinates when the grid is rotated (phi/theta/psiEuler .NE. 0) |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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k2AtC(I,J,bi,bj) = - _tanPhiAtU(I,J,bi,bj)*recip_rSphere |
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k2AtU(I,J,bi,bj) = - _tanPhiAtU(I,J,bi,bj)*recip_rSphere |
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k2AtV(I,J,bi,bj) = - _tanPhiAtV(I,J,bi,bj)*recip_rSphere |
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ENDDO |
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ENDDO |
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ELSEIF ( usingCurvilinearGrid .AND. SEAICEuseMetricTerms ) THEN |
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C compute metric term coefficients from finite difference approximation |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx-1 |
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k1AtC(I,J,bi,bj) = _recip_dyF(I,J,bi,bj) |
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& * ( _dyG(I+1,J,bi,bj) - _dyG(I,J,bi,bj) ) |
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& * _recip_dxF(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+1,sNx+OLx |
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k1AtU(I,J,bi,bj) = _recip_dyG(I,J,bi,bj) |
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& * ( _dyF(I,J,bi,bj) - _dyF(I-1,J,bi,bj) ) |
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& * _recip_dxC(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-1 |
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k1AtV(I,J,bi,bj) = _recip_dyC(I,J,bi,bj) |
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& * ( _dyU(I+1,J,bi,bj) - _dyU(I,J,bi,bj) ) |
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& * _recip_dxG(I,J,bi,bj) |
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ENDDO |
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ENDDO |
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DO j=1-OLy,sNy+OLy-1 |
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DO i=1-OLx,sNx+OLx |
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k2AtC(I,J,bi,bj) = _recip_dxF(I,J,bi,bj) |
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& * ( _dxG(I,J+1,bi,bj) - _dxG(I,J,bi,bj) ) |
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& * _recip_dyF(I,J,bi,bj) |
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ENDDO |
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ENDDO |
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DO j=1-OLy,sNy+OLy-1 |
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DO i=1-OLx,sNx+OLx |
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k2AtU(I,J,bi,bj) = _recip_dxC(I,J,bi,bj) |
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& * ( _dxV(I,J+1,bi,bj) - _dxV(I,J,bi,bj) ) |
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& * _recip_dyG(I,J,bi,bj) |
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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,sNx+OLx |
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k2AtV(I,J,bi,bj) = _recip_dxG(I,J,bi,bj) |
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& * ( _dxF(I,J,bi,bj) - _dxF(I,J-1,bi,bj) ) |
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& * _recip_dyC(I,J,bi,bj) |
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ENDDO |
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ENDDO |
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ENDIF |
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#endif /* not SEAICE_CGRID */ |
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ENDDO |
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ENDDO |
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|
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#ifndef SEAICE_CGRID |
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C-- Choose a proxy level for geostrophic velocity, |
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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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KGEO(i,j,bi,bj) = 0 |
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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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#ifdef SEAICE_BICE_STRESS |
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KGEO(i,j,bi,bj) = 1 |
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#else /* SEAICE_BICE_STRESS */ |
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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 _d 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_BICE_STRESS */ |
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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_CGRID */ |
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|
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#ifdef ALLOW_DIAGNOSTICS |
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IF ( useDiagnostics ) THEN |
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CALL SEAICE_DIAGNOSTICS_INIT( myThid ) |
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ENDIF |
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#endif |
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|
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C-- Summarise pkg/seaice configuration |
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CALL SEAICE_SUMMARY( myThid ) |
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|
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RETURN |
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END |
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