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C $Header: /u/gcmpack/MITgcm/pkg/obcs/obcs_readparms.F,v 1.21 2008/04/24 08:22:06 mlosch Exp $ |
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C $Name: $ |
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|
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#include "OBCS_OPTIONS.h" |
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|
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SUBROUTINE OBCS_READPARMS( myThid ) |
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C /==========================================================\ |
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C | SUBROUTINE OBCS_READPARMS | |
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C | o Routine to initialize OBCS variables and constants. | |
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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 "OBCS.h" |
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#ifdef ALLOW_ORLANSKI |
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#include "ORLANSKI.h" |
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#endif |
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#ifdef ALLOW_PTRACERS |
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#include "PTRACERS_SIZE.h" |
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#include "OBCS_PTRACERS.h" |
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#endif /* ALLOW_PTRACERS */ |
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|
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C === Routine arguments === |
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INTEGER myThid |
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|
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#ifdef ALLOW_OBCS |
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|
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C === Local variables === |
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C msgBuf - Informational/error meesage buffer |
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C iUnit - Work variable for IO unit number |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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INTEGER iUnit |
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INTEGER I,J,iTracer |
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INTEGER bi, bj, iG, jG, iGm, jGm |
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|
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NAMELIST /OBCS_PARM01/ |
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& OB_Jnorth,OB_Jsouth,OB_Ieast,OB_Iwest, |
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& useOrlanskiNorth,useOrlanskiSouth, |
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& useOrlanskiEast,useOrlanskiWest, |
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& OBNuFile,OBNvFile,OBNtFile,OBNsFile,OBNaFile,OBNhFile, |
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& OBSuFile,OBSvFile,OBStFile,OBSsFile,OBSaFile,OBShFile, |
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& OBEuFile,OBEvFile,OBEtFile,OBEsFile,OBEaFile,OBEhFile, |
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& OBWuFile,OBWvFile,OBWtFile,OBWsFile,OBWaFile,OBWhFile, |
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& OBNslFile,OBSslFile,OBEslFile,OBWslFile, |
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& OBNsnFile,OBSsnFile,OBEsnFile,OBWsnFile, |
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& OBNuiceFile,OBSuiceFile,OBEuiceFile,OBWuiceFile, |
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& OBNviceFile,OBSviceFile,OBEviceFile,OBWviceFile, |
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& useOBCSsponge, useOBCSbalance, useOBCSprescribe, |
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& OBCSprintDiags, useOBCSYearlyFields, OBCSfixTopo |
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#ifdef ALLOW_PTRACERS |
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& , OBNptrFile,OBSptrFile,OBEptrFile,OBWptrFile |
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#endif |
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|
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#ifdef ALLOW_ORLANSKI |
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NAMELIST /OBCS_PARM02/ |
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& CMAX, cvelTimeScale, CFIX, useFixedCEast, useFixedCWest |
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#endif |
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|
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#ifdef ALLOW_OBCS_SPONGE |
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NAMELIST /OBCS_PARM03/ |
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& Urelaxobcsinner,Urelaxobcsbound, |
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& Vrelaxobcsinner,Vrelaxobcsbound, |
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& spongeThickness |
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#endif |
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|
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_BEGIN_MASTER(myThid) |
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|
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C-- OBCS_READPARMS has been called so we know that |
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C the package is active. |
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OBCSIsOn=.TRUE. |
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|
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IF ( debugLevel .GE. debLevB ) THEN |
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WRITE(msgBuf,'(A)') ' OBCS_READPARMS: opening data.obcs' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , 1) |
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ENDIF |
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|
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CALL OPEN_COPY_DATA_FILE( |
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I 'data.obcs', 'OBCS_READPARMS', |
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O iUnit, |
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I myThid ) |
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|
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C-- Default flags and values for OBCS |
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DO I=1,Nx |
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OB_Jnorth(I)=0 |
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OB_Jsouth(I)=0 |
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ENDDO |
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DO J=1,Ny |
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OB_Ieast(J)=0 |
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OB_Iwest(J)=0 |
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ENDDO |
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useOrlanskiNorth =.FALSE. |
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useOrlanskiSouth =.FALSE. |
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useOrlanskiEast =.FALSE. |
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useOrlanskiWest =.FALSE. |
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useOBCSsponge =.FALSE. |
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useOBCSbalance =.FALSE. |
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useOBCSprescribe =.FALSE. |
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OBCSprintDiags =.TRUE. |
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useOBCSYearlyFields=.FALSE. |
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OBCSfixTopo =.TRUE. |
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|
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OBNuFile = ' ' |
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OBNvFile = ' ' |
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OBNtFile = ' ' |
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OBNsFile = ' ' |
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OBNaFile = ' ' |
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OBNslFile = ' ' |
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OBNsnFile = ' ' |
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OBNuiceFile = ' ' |
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OBNviceFile = ' ' |
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OBNhFile = ' ' |
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OBSuFile = ' ' |
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OBSvFile = ' ' |
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OBStFile = ' ' |
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OBSsFile = ' ' |
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OBSaFile = ' ' |
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OBShFile = ' ' |
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OBSslFile = ' ' |
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OBSsnFile = ' ' |
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OBSuiceFile = ' ' |
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OBSviceFile = ' ' |
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OBEuFile = ' ' |
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OBEvFile = ' ' |
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OBEtFile = ' ' |
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OBEsFile = ' ' |
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OBEaFile = ' ' |
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OBEhFile = ' ' |
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OBEslFile = ' ' |
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OBEsnFile = ' ' |
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OBEuiceFile = ' ' |
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OBEviceFile = ' ' |
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OBWuFile = ' ' |
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OBWvFile = ' ' |
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OBWtFile = ' ' |
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OBWsFile = ' ' |
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OBWaFile = ' ' |
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OBWhFile = ' ' |
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OBWslFile = ' ' |
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OBWsnFile = ' ' |
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OBWuiceFile = ' ' |
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OBWviceFile = ' ' |
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#ifdef ALLOW_PTRACERS |
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DO iTracer = 1, PTRACERS_num |
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OBNptrFile(iTracer) = ' ' |
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OBSptrFile(iTracer) = ' ' |
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OBEptrFile(iTracer) = ' ' |
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OBWptrFile(iTracer) = ' ' |
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ENDDO |
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#endif |
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|
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C-- Read parameters from open data file |
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READ(UNIT=iUnit,NML=OBCS_PARM01) |
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|
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C Account for periodicity if negative indices were supplied |
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DO J=1,Ny |
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IF (OB_Ieast(J).lt.0) OB_Ieast(J)=OB_Ieast(J)+Nx+1 |
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ENDDO |
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DO I=1,Nx |
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IF (OB_Jnorth(I).lt.0) OB_Jnorth(I)=OB_Jnorth(I)+Ny+1 |
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ENDDO |
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IF ( debugLevel .GE. debLevB ) THEN |
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write(*,*) 'OB Jn =',OB_Jnorth |
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write(*,*) 'OB Js =',OB_Jsouth |
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write(*,*) 'OB Ie =',OB_Ieast |
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write(*,*) 'OB Iw =',OB_Iwest |
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ENDIF |
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|
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#ifdef ALLOW_ORLANSKI |
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C Default Orlanski radiation parameters |
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CMAX = 0.45 _d 0 /* maximum allowable phase speed-CFL for AB-II */ |
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cvelTimeScale = 2000.0 _d 0 /* Averaging period for phase speed in sec. */ |
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CFIX = 0.8 _d 0 /* Fixed boundary phase speed in m/s */ |
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useFixedCEast=.FALSE. |
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useFixedCWest=.FALSE. |
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IF (useOrlanskiNorth.OR. |
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& useOrlanskiSouth.OR. |
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& useOrlanskiEast.OR. |
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& useOrlanskiWest) |
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& READ(UNIT=iUnit,NML=OBCS_PARM02) |
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#endif |
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|
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#ifdef ALLOW_OBCS_SPONGE |
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C Default sponge layer parameters: |
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C sponge layer is turned off by default |
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spongeThickness = 0 |
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Urelaxobcsinner = 0. _d 0 |
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Urelaxobcsbound = 0. _d 0 |
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Vrelaxobcsinner = 0. _d 0 |
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Vrelaxobcsbound = 0. _d 0 |
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CML this was the previous default in units of days |
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CML spongeThickness = 2 |
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CML Urelaxobcsinner = 5. _d 0 |
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CML Urelaxobcsbound = 1. _d 0 |
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CML Vrelaxobcsinner = 5. _d 0 |
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CML Vrelaxobcsbound = 1. _d 0 |
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IF (useOBCSsponge) |
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& READ(UNIT=iUnit,NML=OBCS_PARM03) |
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#endif |
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|
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IF ( debugLevel .GE. debLevB ) THEN |
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WRITE(msgBuf,'(A)') ' OBCS_READPARMS: finished reading data.obcs' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , 1) |
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ENDIF |
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|
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C-- Close the open data file |
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CLOSE(iUnit) |
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_END_MASTER(myThid) |
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|
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C-- Everyone else must wait for the parameters to be loaded |
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_BARRIER |
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|
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C-- Calculate the tiled index arrays OB_Jn/Js/Ie/Iw here from the |
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C global arrays OB_Jnorth/Jsouth/Ieast/Iwest. |
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C Note: This part of the code has been moved from obcs_init_fixed to |
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C routine routine because the OB_Jn/Js/Ie/Iw index arrays are |
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C required by ini_depth which is called befoer obcs_init_fixed |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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|
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DO I=1-Olx,sNx+Olx |
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OB_Jn(I,bi,bj)=0 |
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OB_Js(I,bi,bj)=0 |
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ENDDO |
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|
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DO J=1-Oly,sNy+Oly |
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OB_Ie(J,bi,bj)=0 |
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OB_Iw(J,bi,bj)=0 |
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ENDDO |
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|
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DO J=1-Oly,sNy+Oly |
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C convert from local y index J to global y index jG |
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jG = myYGlobalLo-1+(bj-1)*sNy+J |
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C use periodicity to deal with out of range points caused by the overlaps. |
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C they will be excluded by the mask in any case, but this saves array |
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C out-of-bounds errors here. |
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jGm = 1+mod( jG-1+Ny , Ny ) |
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C loop over local x index I |
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DO I=1,sNx |
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iG = myXGlobalLo-1+(bi-1)*sNx+I |
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iGm = 1+mod( iG-1+Nx , Nx ) |
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C OB_Ieast(jGm) allows for the eastern boundary to be at variable x locations |
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IF (iG.EQ.OB_Ieast(jGm)) OB_Ie(J,bi,bj)=I |
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IF (iG.EQ.OB_Iwest(jGm)) OB_Iw(J,bi,bj)=I |
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ENDDO |
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ENDDO |
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DO J=1,sNy |
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jG = myYGlobalLo-1+(bj-1)*sNy+J |
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jGm = 1+mod( jG-1+Ny , Ny ) |
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DO I=1-Olx,sNx+Olx |
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iG = myXGlobalLo-1+(bi-1)*sNx+I |
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iGm = 1+mod( iG-1+Nx , Nx ) |
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C OB_Jnorth(iGm) allows for the northern boundary to be at variable y locations |
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IF (jG.EQ.OB_Jnorth(iGm)) OB_Jn(I,bi,bj)=J |
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IF (jG.EQ.OB_Jsouth(iGm)) OB_Js(I,bi,bj)=J |
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ENDDO |
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ENDDO |
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C bi,bj-loops |
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ENDDO |
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ENDDO |
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|
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#endif /* ALLOW_OBCS */ |
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RETURN |
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END |
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