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dimitri |
1.1 |
C $Header: /u/gcmpack/MITgcm/pkg/seaice/seaice_init_fixed.F,v 1.19 2012/03/11 13:41:38 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_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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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_SIZE.h" |
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#include "SEAICE_PARAMS.h" |
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#include "SEAICE.h" |
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#include "SEAICE_TRACER.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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C === Local variables === |
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dimitri |
1.2 |
CToM<<< |
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#ifdef SEAICE_ITD |
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C msgBuf :: Informational/error message buffer |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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CHARACTER*15 HlimitMsgFormat |
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C k - loop counter for ITD categories |
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INTEGER k |
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#endif |
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C>>>ToM |
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dimitri |
1.1 |
C i,j,k,bi,bj - Loop counters |
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INTEGER i, j, bi, bj |
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INTEGER kSurface |
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#ifdef ALLOW_SITRACER |
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INTEGER iTracer |
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#endif |
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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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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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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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_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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C-- Set mcPheePiston coeff (if still unset) |
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_BEGIN_MASTER(myThid) |
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IF ( SEAICE_mcPheePiston.EQ.UNSET_RL ) THEN |
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IF ( SEAICE_availHeatFrac.NE.UNSET_RL ) THEN |
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SEAICE_mcPheePiston = SEAICE_availHeatFrac |
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& * drF(kSurface)/SEAICE_deltaTtherm |
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ELSE |
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SEAICE_mcPheePiston = MCPHEE_TAPER_FAC |
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& * STANTON_NUMBER * USTAR_BASE |
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SEAICE_mcPheePiston = MIN( SEAICE_mcPheePiston, |
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& drF(kSurface)/SEAICE_deltaTtherm ) |
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ENDIF |
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ENDIF |
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_END_MASTER(myThid) |
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C-- SItracer specifications for basic tracers |
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#ifdef ALLOW_SITRACER |
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_BEGIN_MASTER(myThid) |
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DO iTracer = 1, SItrNumInUse |
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C "ice concentration" tracer that should remain .EQ.1. |
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IF (SItrName(iTracer).EQ.'one') THEN |
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SItrFromOcean0(iTracer) =ONE |
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SItrFromFlood0(iTracer) =ONE |
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SItrExpand0(iTracer) =ONE |
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SItrFromOceanFrac(iTracer) =ZERO |
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SItrFromFloodFrac(iTracer) =ZERO |
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ENDIF |
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C age tracer: no age in ocean, or effect from ice cover changes |
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IF (SItrName(iTracer).EQ.'age') THEN |
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SItrFromOcean0(iTracer) =ZERO |
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SItrFromFlood0(iTracer) =ZERO |
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SItrExpand0(iTracer) =ZERO |
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SItrFromOceanFrac(iTracer) =ZERO |
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SItrFromFloodFrac(iTracer) =ZERO |
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ENDIf |
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C salinity tracer: |
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IF (SItrName(iTracer).EQ.'salinity') THEN |
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SItrMate(iTracer) ='HEFF' |
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SItrExpand0(iTracer) =ZERO |
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IF ( SEAICE_salinityTracer ) THEN |
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SEAICE_salt0 = ZERO |
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SEAICE_saltFrac = ZERO |
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ENDIF |
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ENDIF |
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C simple, made up, ice surface roughness index prototype |
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IF (SItrName(iTracer).EQ.'ridge') THEN |
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SItrMate(iTracer) ='AREA' |
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SItrFromOcean0(iTracer) =ZERO |
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SItrFromFlood0(iTracer) =ZERO |
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SItrExpand0(iTracer) =ZERO |
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SItrFromOceanFrac(iTracer) =ZERO |
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SItrFromFloodFrac(iTracer) =ZERO |
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ENDIF |
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ENDDO |
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_END_MASTER(myThid) |
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#endif |
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C-- all threads wait for master to finish initialisation of shared params |
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_BARRIER |
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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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dimitri |
1.2 |
CToM<<< |
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#ifdef SEAICE_ITD |
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C use Equ. 22 of Lipscomb et al. (2001, JGR) to generate ice |
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C thickness category limits: |
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torge |
1.3 |
C - dependends on given number of categories nITD |
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dimitri |
1.2 |
C - choose between original parameters of Lipscomb et al. (2001): |
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C Lipscomb: c1=3.0/N, c2=15*c1, c3=3.0 |
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torge |
1.3 |
C or emphasize thin end of ITD in order to enhance ice growth: |
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dimitri |
1.2 |
C ToM: c1=1.5/N, c2=42*c1, c3=3.3 |
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torge |
1.3 |
C (parameters c1 to c3 are set in seaice_readparms.F) |
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dimitri |
1.2 |
C---+-|--1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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Hlimit(0) = 0.0 |
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Hlimit_c1=Hlimit_c1/float(nITD) |
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Hlimit_c2=Hlimit_c2*Hlimit_c1 |
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DO k=1,nITD-1 |
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Hlimit(k) = Hlimit(k-1) |
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& + Hlimit_c1 |
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& + Hlimit_c2 |
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& *( 1.+tanh( Hlimit_c3 *(float(k-1)/float(nITD) -1. ) ) ) |
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ENDDO |
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C thickest category is unlimited |
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Hlimit(nITD) = 999.9 |
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WRITE(msgBuf,'(A,I2,A)') |
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& ' SEAICE_INIT_FIXED: ', nITD, |
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& ' sea ice thickness categories' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , myThid) |
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WRITE(HlimitMsgFormat,'(A,I2,A)') '(A,',nITD,'F6.2,F6.1)' |
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WRITE(msgBuf,HlimitMsgFormat) |
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& ' SEAICE_INIT_FIXED: Hlimit = ', |
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& Hlimit(0:nITD-1),Hlimit(nITD) |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , myThid) |
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#endif |
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C>>>ToM |
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dimitri |
1.1 |
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) ) |
| 312 |
|
|
& * _recip_dxG(I,J,bi,bj) |
| 313 |
|
|
ENDDO |
| 314 |
|
|
ENDDO |
| 315 |
|
|
DO j=1-OLy,sNy+OLy-1 |
| 316 |
|
|
DO i=1-OLx,sNx+OLx |
| 317 |
|
|
k2AtC(I,J,bi,bj) = _recip_dxF(I,J,bi,bj) |
| 318 |
|
|
& * ( _dxG(I,J+1,bi,bj) - _dxG(I,J,bi,bj) ) |
| 319 |
|
|
& * _recip_dyF(I,J,bi,bj) |
| 320 |
|
|
ENDDO |
| 321 |
|
|
ENDDO |
| 322 |
|
|
DO j=1-OLy,sNy+OLy-1 |
| 323 |
|
|
DO i=1-OLx,sNx+OLx |
| 324 |
|
|
k2AtU(I,J,bi,bj) = _recip_dxC(I,J,bi,bj) |
| 325 |
|
|
& * ( _dxV(I,J+1,bi,bj) - _dxV(I,J,bi,bj) ) |
| 326 |
|
|
& * _recip_dyG(I,J,bi,bj) |
| 327 |
|
|
ENDDO |
| 328 |
|
|
ENDDO |
| 329 |
|
|
DO j=1-OLy+1,sNy+OLy |
| 330 |
|
|
DO i=1-OLx,sNx+OLx |
| 331 |
|
|
k2AtV(I,J,bi,bj) = _recip_dxG(I,J,bi,bj) |
| 332 |
|
|
& * ( _dxF(I,J,bi,bj) - _dxF(I,J-1,bi,bj) ) |
| 333 |
|
|
& * _recip_dyC(I,J,bi,bj) |
| 334 |
|
|
ENDDO |
| 335 |
|
|
ENDDO |
| 336 |
|
|
ENDIF |
| 337 |
|
|
#endif /* not SEAICE_CGRID */ |
| 338 |
|
|
ENDDO |
| 339 |
|
|
ENDDO |
| 340 |
|
|
|
| 341 |
|
|
#ifndef SEAICE_CGRID |
| 342 |
|
|
C-- Choose a proxy level for geostrophic velocity, |
| 343 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
| 344 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 345 |
|
|
DO j=1-OLy,sNy+OLy |
| 346 |
|
|
DO i=1-OLx,sNx+OLx |
| 347 |
|
|
KGEO(i,j,bi,bj) = 0 |
| 348 |
|
|
ENDDO |
| 349 |
|
|
ENDDO |
| 350 |
|
|
DO j=1-OLy,sNy+OLy |
| 351 |
|
|
DO i=1-OLx,sNx+OLx |
| 352 |
|
|
#ifdef SEAICE_BICE_STRESS |
| 353 |
|
|
KGEO(i,j,bi,bj) = 1 |
| 354 |
|
|
#else /* SEAICE_BICE_STRESS */ |
| 355 |
|
|
IF (klowc(i,j,bi,bj) .LT. 2) THEN |
| 356 |
|
|
KGEO(i,j,bi,bj) = 1 |
| 357 |
|
|
ELSE |
| 358 |
|
|
KGEO(i,j,bi,bj) = 2 |
| 359 |
|
|
DO WHILE ( abs(rC(KGEO(i,j,bi,bj))) .LT. 50.0 _d 0 .AND. |
| 360 |
|
|
& KGEO(i,j,bi,bj) .LT. (klowc(i,j,bi,bj)-1) ) |
| 361 |
|
|
KGEO(i,j,bi,bj) = KGEO(i,j,bi,bj) + 1 |
| 362 |
|
|
ENDDO |
| 363 |
|
|
ENDIF |
| 364 |
|
|
#endif /* SEAICE_BICE_STRESS */ |
| 365 |
|
|
ENDDO |
| 366 |
|
|
ENDDO |
| 367 |
|
|
ENDDO |
| 368 |
|
|
ENDDO |
| 369 |
|
|
#endif /* SEAICE_CGRID */ |
| 370 |
|
|
|
| 371 |
|
|
#ifdef ALLOW_DIAGNOSTICS |
| 372 |
|
|
IF ( useDiagnostics ) THEN |
| 373 |
|
|
CALL SEAICE_DIAGNOSTICS_INIT( myThid ) |
| 374 |
|
|
ENDIF |
| 375 |
|
|
#endif |
| 376 |
|
|
|
| 377 |
|
|
C-- Summarise pkg/seaice configuration |
| 378 |
|
|
CALL SEAICE_SUMMARY( myThid ) |
| 379 |
|
|
|
| 380 |
|
|
RETURN |
| 381 |
|
|
END |
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