| 1 |
gforget |
1.15 |
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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heimbach |
1.1 |
C $Name: $ |
| 3 |
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| 4 |
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#include "SEAICE_OPTIONS.h" |
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CStartOfInterface |
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SUBROUTINE SEAICE_INIT_FIXED( myThid ) |
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jmc |
1.6 |
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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heimbach |
1.1 |
IMPLICIT NONE |
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jmc |
1.6 |
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heimbach |
1.1 |
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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jmc |
1.7 |
#include "FFIELDS.h" |
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#include "SEAICE_PARAMS.h" |
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heimbach |
1.1 |
#include "SEAICE.h" |
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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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jmc |
1.6 |
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heimbach |
1.1 |
C === Local variables === |
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C i,j,k,bi,bj - Loop counters |
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jmc |
1.7 |
INTEGER i, j, bi, bj |
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mlosch |
1.4 |
INTEGER kSurface |
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jmc |
1.6 |
#ifndef SEAICE_CGRID |
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mlosch |
1.4 |
_RS mask_uice |
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jmc |
1.6 |
#endif |
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jmc |
1.12 |
#ifdef SHORTWAVE_HEATING |
| 38 |
heimbach |
1.3 |
cif Helper variable for determining the fraction of sw radiation |
| 39 |
jmc |
1.8 |
cif penetrating the model shallowest layer |
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heimbach |
1.3 |
_RL dummyTime |
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_RL swfracba(2) |
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jmc |
1.12 |
_RL tmpFac |
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#endif /* SHORTWAVE_HEATING */ |
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heimbach |
1.1 |
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mlosch |
1.4 |
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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heimbach |
1.1 |
ENDIF |
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jmc |
1.6 |
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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jmc |
1.12 |
_BEGIN_MASTER(myThid) |
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heimbach |
1.3 |
#ifdef SHORTWAVE_HEATING |
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jmc |
1.12 |
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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heimbach |
1.3 |
U swfracba, |
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jmc |
1.12 |
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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gforget |
1.13 |
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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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gforget |
1.15 |
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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heimbach |
1.3 |
|
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gforget |
1.14 |
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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mlosch |
1.4 |
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 |
| 128 |
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ENDDO |
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ENDDO |
| 130 |
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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 |
| 135 |
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ENDDO |
| 136 |
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ENDDO |
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jmc |
1.11 |
#ifndef SEAICE_CGRID |
| 138 |
mlosch |
1.4 |
DO j=1-OLy+1,sNy+OLy |
| 139 |
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DO i=1-OLx+1,sNx+OLx |
| 140 |
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UVM(i,j,bi,bj)=0. _d 0 |
| 141 |
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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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jmc |
1.11 |
#endif /* SEAICE_CGRID */ |
| 147 |
mlosch |
1.4 |
ENDDO |
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ENDDO |
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jmc |
1.6 |
C coefficients for metric terms |
| 151 |
mlosch |
1.4 |
DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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mlosch |
1.10 |
#ifdef SEAICE_CGRID |
| 154 |
mlosch |
1.4 |
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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jmc |
1.6 |
C This is the only case where tan(phi) is not zero. In this case |
| 164 |
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C C and U points, and Z and V points have the same phi, so that we |
| 165 |
mlosch |
1.4 |
C only need a copy here. Do not use tan(YC) and tan(YG), because these |
| 166 |
jmc |
1.6 |
C can be the geographical coordinates and not the correct grid |
| 167 |
mlosch |
1.4 |
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 |
| 170 |
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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 |
| 174 |
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ELSEIF ( usingCurvilinearGrid .AND. SEAICEuseMetricTerms ) THEN |
| 175 |
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C compute metric term coefficients from finite difference approximation |
| 176 |
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DO j=1-OLy,sNy+OLy |
| 177 |
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DO i=1-OLx,sNx+OLx-1 |
| 178 |
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k1AtC(I,J,bi,bj) = _recip_dyF(I,J,bi,bj) |
| 179 |
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& * ( _dyG(I+1,J,bi,bj) - _dyG(I,J,bi,bj) ) |
| 180 |
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& * _recip_dxF(I,J,bi,bj) |
| 181 |
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ENDDO |
| 182 |
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ENDDO |
| 183 |
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DO j=1-OLy,sNy+OLy |
| 184 |
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DO i=1-OLx+1,sNx+OLx |
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jmc |
1.6 |
k1AtZ(I,J,bi,bj) = _recip_dyU(I,J,bi,bj) |
| 186 |
mlosch |
1.4 |
& * ( _dyC(I,J,bi,bj) - _dyC(I-1,J,bi,bj) ) |
| 187 |
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& * _recip_dxV(I,J,bi,bj) |
| 188 |
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ENDDO |
| 189 |
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ENDDO |
| 190 |
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DO j=1-OLy,sNy+OLy-1 |
| 191 |
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DO i=1-OLx,sNx+OLx |
| 192 |
jmc |
1.6 |
k2AtC(I,J,bi,bj) = _recip_dxF(I,J,bi,bj) |
| 193 |
mlosch |
1.4 |
& * ( _dxG(I,J+1,bi,bj) - _dxG(I,J,bi,bj) ) |
| 194 |
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& * _recip_dyF(I,J,bi,bj) |
| 195 |
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ENDDO |
| 196 |
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ENDDO |
| 197 |
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DO j=1-OLy+1,sNy+OLy |
| 198 |
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DO i=1-OLx,sNx+OLx |
| 199 |
mlosch |
1.9 |
k2AtZ(I,J,bi,bj) = _recip_dxV(I,J,bi,bj) |
| 200 |
mlosch |
1.4 |
& * ( _dxC(I,J,bi,bj) - _dxC(I,J-1,bi,bj) ) |
| 201 |
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& * _recip_dyU(I,J,bi,bj) |
| 202 |
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ENDDO |
| 203 |
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ENDDO |
| 204 |
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ENDIF |
| 205 |
mlosch |
1.10 |
#else /* not SEAICE_CGRID */ |
| 206 |
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DO j=1-OLy,sNy+OLy |
| 207 |
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DO i=1-OLx,sNx+OLx |
| 208 |
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k1AtC(I,J,bi,bj) = 0.0 _d 0 |
| 209 |
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k1AtU(I,J,bi,bj) = 0.0 _d 0 |
| 210 |
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k1AtV(I,J,bi,bj) = 0.0 _d 0 |
| 211 |
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k2AtC(I,J,bi,bj) = 0.0 _d 0 |
| 212 |
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k2AtU(I,J,bi,bj) = 0.0 _d 0 |
| 213 |
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k2AtV(I,J,bi,bj) = 0.0 _d 0 |
| 214 |
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ENDDO |
| 215 |
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ENDDO |
| 216 |
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IF ( usingSphericalPolarGrid .AND. SEAICEuseMetricTerms ) THEN |
| 217 |
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C This is the only case where tan(phi) is not zero. In this case |
| 218 |
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C C and U points, and Z and V points have the same phi, so that we |
| 219 |
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C only need a copy here. Do not use tan(YC) and tan(YG), because these |
| 220 |
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C can be the geographical coordinates and not the correct grid |
| 221 |
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C coordinates when the grid is rotated (phi/theta/psiEuler .NE. 0) |
| 222 |
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DO j=1-OLy,sNy+OLy |
| 223 |
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DO i=1-OLx,sNx+OLx |
| 224 |
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k2AtC(I,J,bi,bj) = - _tanPhiAtU(I,J,bi,bj)*recip_rSphere |
| 225 |
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k2AtU(I,J,bi,bj) = - _tanPhiAtU(I,J,bi,bj)*recip_rSphere |
| 226 |
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k2AtV(I,J,bi,bj) = - _tanPhiAtV(I,J,bi,bj)*recip_rSphere |
| 227 |
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ENDDO |
| 228 |
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ENDDO |
| 229 |
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ELSEIF ( usingCurvilinearGrid .AND. SEAICEuseMetricTerms ) THEN |
| 230 |
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C compute metric term coefficients from finite difference approximation |
| 231 |
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DO j=1-OLy,sNy+OLy |
| 232 |
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DO i=1-OLx,sNx+OLx-1 |
| 233 |
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k1AtC(I,J,bi,bj) = _recip_dyF(I,J,bi,bj) |
| 234 |
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& * ( _dyG(I+1,J,bi,bj) - _dyG(I,J,bi,bj) ) |
| 235 |
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& * _recip_dxF(I,J,bi,bj) |
| 236 |
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ENDDO |
| 237 |
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ENDDO |
| 238 |
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DO j=1-OLy,sNy+OLy |
| 239 |
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DO i=1-OLx+1,sNx+OLx |
| 240 |
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k1AtU(I,J,bi,bj) = _recip_dyG(I,J,bi,bj) |
| 241 |
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& * ( _dyF(I,J,bi,bj) - _dyF(I-1,J,bi,bj) ) |
| 242 |
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& * _recip_dxC(I,J,bi,bj) |
| 243 |
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ENDDO |
| 244 |
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ENDDO |
| 245 |
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DO j=1-OLy,sNy+OLy |
| 246 |
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DO i=1-OLx,sNx+OLx-1 |
| 247 |
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k1AtV(I,J,bi,bj) = _recip_dyC(I,J,bi,bj) |
| 248 |
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& * ( _dyU(I+1,J,bi,bj) - _dyU(I,J,bi,bj) ) |
| 249 |
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& * _recip_dxG(I,J,bi,bj) |
| 250 |
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ENDDO |
| 251 |
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ENDDO |
| 252 |
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DO j=1-OLy,sNy+OLy-1 |
| 253 |
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DO i=1-OLx,sNx+OLx |
| 254 |
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k2AtC(I,J,bi,bj) = _recip_dxF(I,J,bi,bj) |
| 255 |
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& * ( _dxG(I,J+1,bi,bj) - _dxG(I,J,bi,bj) ) |
| 256 |
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& * _recip_dyF(I,J,bi,bj) |
| 257 |
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ENDDO |
| 258 |
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ENDDO |
| 259 |
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DO j=1-OLy,sNy+OLy-1 |
| 260 |
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DO i=1-OLx,sNx+OLx |
| 261 |
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k2AtU(I,J,bi,bj) = _recip_dxC(I,J,bi,bj) |
| 262 |
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& * ( _dxV(I,J+1,bi,bj) - _dxV(I,J,bi,bj) ) |
| 263 |
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& * _recip_dyG(I,J,bi,bj) |
| 264 |
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ENDDO |
| 265 |
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ENDDO |
| 266 |
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DO j=1-OLy+1,sNy+OLy |
| 267 |
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DO i=1-OLx,sNx+OLx |
| 268 |
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k2AtV(I,J,bi,bj) = _recip_dxG(I,J,bi,bj) |
| 269 |
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& * ( _dxF(I,J,bi,bj) - _dxF(I,J-1,bi,bj) ) |
| 270 |
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& * _recip_dyC(I,J,bi,bj) |
| 271 |
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ENDDO |
| 272 |
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ENDDO |
| 273 |
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ENDIF |
| 274 |
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#endif /* not SEAICE_CGRID */ |
| 275 |
mlosch |
1.4 |
ENDDO |
| 276 |
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ENDDO |
| 277 |
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| 278 |
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#ifndef SEAICE_CGRID |
| 279 |
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C-- Choose a proxy level for geostrophic velocity, |
| 280 |
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DO bj=myByLo(myThid),myByHi(myThid) |
| 281 |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
| 282 |
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DO j=1-OLy,sNy+OLy |
| 283 |
|
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DO i=1-OLx,sNx+OLx |
| 284 |
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KGEO(i,j,bi,bj) = 0 |
| 285 |
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ENDDO |
| 286 |
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ENDDO |
| 287 |
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DO j=1-OLy,sNy+OLy |
| 288 |
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DO i=1-OLx,sNx+OLx |
| 289 |
|
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#ifdef SEAICE_BICE_STRESS |
| 290 |
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KGEO(i,j,bi,bj) = 1 |
| 291 |
|
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#else /* SEAICE_BICE_STRESS */ |
| 292 |
|
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IF (klowc(i,j,bi,bj) .LT. 2) THEN |
| 293 |
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KGEO(i,j,bi,bj) = 1 |
| 294 |
|
|
ELSE |
| 295 |
|
|
KGEO(i,j,bi,bj) = 2 |
| 296 |
|
|
DO WHILE ( abs(rC(KGEO(i,j,bi,bj))) .LT. 50.0 _d 0 .AND. |
| 297 |
|
|
& KGEO(i,j,bi,bj) .LT. (klowc(i,j,bi,bj)-1) ) |
| 298 |
|
|
KGEO(i,j,bi,bj) = KGEO(i,j,bi,bj) + 1 |
| 299 |
|
|
ENDDO |
| 300 |
|
|
ENDIF |
| 301 |
|
|
#endif /* SEAICE_BICE_STRESS */ |
| 302 |
|
|
ENDDO |
| 303 |
|
|
ENDDO |
| 304 |
|
|
ENDDO |
| 305 |
|
|
ENDDO |
| 306 |
|
|
#endif /* SEAICE_CGRID */ |
| 307 |
|
|
|
| 308 |
|
|
#ifdef ALLOW_DIAGNOSTICS |
| 309 |
|
|
IF ( useDiagnostics ) THEN |
| 310 |
|
|
CALL SEAICE_DIAGNOSTICS_INIT( myThid ) |
| 311 |
|
|
ENDIF |
| 312 |
|
|
#endif |
| 313 |
|
|
|
| 314 |
gforget |
1.13 |
C-- Summarise pkg/seaice configuration |
| 315 |
|
|
CALL SEAICE_SUMMARY( myThid ) |
| 316 |
|
|
|
| 317 |
heimbach |
1.1 |
RETURN |
| 318 |
|
|
END |
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