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dgoldberg |
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C $Header: /u/gcmpack/MITgcm/pkg/obcs/obcs_balance_flow.F,v 1.7 2012/09/17 22:03:18 jmc Exp $ |
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C $Name: $ |
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#include "OBCS_OPTIONS.h" |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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CBOP |
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C !ROUTINE: OBCS_BALANCE_FLOW |
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C !INTERFACE: |
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SUBROUTINE OBCS_BALANCE_FLOW( myTime, myIter, myThid ) |
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C !DESCRIPTION: |
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C *==========================================================* |
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C | SUBROUTINE OBCS_BALANCE_FLOW |
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C | o Modify OB normal flow to ensure no net inflow |
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C *==========================================================* |
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C !USES: |
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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 "OBCS_PARAMS.h" |
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#include "OBCS_GRID.h" |
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#include "OBCS_FIELDS.h" |
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C KS16------------------------------------------ |
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# ifdef ALLOW_SHELFICE |
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# include "SHELFICE.h" |
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# include "SHELFICE_COST.h" |
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# endif |
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# ifdef ALLOW_STREAMICE |
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# include "STREAMICE.h" |
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# endif |
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C KS16 end---------------------------------------------- |
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C !INPUT/OUTPUT PARAMETERS: |
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_RL myTime |
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INTEGER myIter |
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INTEGER myThid |
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CEOP |
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#ifdef ALLOW_OBCS |
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#ifdef ALLOW_OBCS_BALANCE |
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C !FUNCTIONS: |
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C !LOCAL VARIABLES: |
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C bi, bj :: tile indices |
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C i,j,k :: loop indices |
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C iB, jB :: local index of open boundary |
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C msgBuf :: Informational/error message buffer |
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INTEGER bi, bj |
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INTEGER i, j, k, iB, jB |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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_RL areaOB, areaE, areaW, areaN, areaS, tmpA |
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_RL inFlow, flowE, flowW, flowN, flowS |
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_RL tileArea(nSx,nSy) |
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_RL tileFlow(nSx,nSy) |
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_RL tileAreaOB(nSx,nSy) |
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_RL tileInFlow(nSx,nSy) |
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LOGICAL flag |
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C KS16-- add params ----------- |
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_RL SEALEVEL, ETA |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C-- Old method (OBCS_balanceFac < 0): balance each OB separately |
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C-- New method applies to all OB with BCS_balanceFac >=0 : |
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C ensure that the net inflow through all OB is balanced by correcting |
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C each OB normal flow with a uniform velocity, using the corresponding |
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C weight factor OBCS_balanceFac. |
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C e.g., OBCS_balanceFac_E,W,N,S= 1, -1, 2, 0 : |
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C => correct Western OBWu (by substracting a uniform velocity) to ensure |
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C zero net transport through Western OB |
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C => correct Eastern and Northern normal flow (twice larger Northern |
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C velocity correction than Eastern correction) to ensure that |
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C the total inflow through E+N+S OB is balanced |
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#ifdef ALLOW_DEBUG |
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IF (debugMode) CALL DEBUG_ENTER('OBCS_BALANCE_FLOW',myThid) |
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#endif |
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C-- Integrate the transport through each OB |
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flag = .FALSE. |
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areaOB = 0. _d 0 |
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inFlow = 0. _d 0 |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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tileAreaOB(bi,bj) = 0. |
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tileInFlow(bi,bj) = 0. |
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ENDDO |
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ENDDO |
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#ifdef ALLOW_OBCS_EAST |
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areaE = 0. _d 0 |
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flowE = 0. _d 0 |
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flag = flag .OR. ( OBCS_balanceFacE.GT.0. ) |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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tileArea(bi,bj) = 0. |
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tileFlow(bi,bj) = 0. |
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IF ( tileHasOBE(bi,bj) ) THEN |
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DO k=1,Nr |
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DO j=1,sNy |
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iB = OB_Ie(j,bi,bj) |
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C- If 1 OB location is on 2 tiles (@ edge of 2 tiles), select the one which |
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C communicates with tile interior (sNx+1) rather than with halo region (i=1) |
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IF ( iB.NE.OB_indexNone .AND. iB.GT.1 ) THEN |
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tmpA = drF(k)*hFacW(iB,j,k,bi,bj)*dyG(iB,j,bi,bj) |
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& *maskInW(iB,j,bi,bj) |
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tileArea(bi,bj) = tileArea(bi,bj) + tmpA |
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tileFlow(bi,bj) = tileFlow(bi,bj) + tmpA*OBEu(j,k,bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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IF ( OBCS_balanceFacE.GE.0. ) THEN |
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tileInFlow(bi,bj) = tileInFlow(bi,bj) - tileFlow(bi,bj) |
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tileAreaOB(bi,bj) = tileAreaOB(bi,bj) |
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& + tileArea(bi,bj)*OBCS_balanceFacE |
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ENDIF |
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areaE = areaE + tileArea(bi,bj) |
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flowE = flowE + tileFlow(bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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c WRITE(standardMessageUnit,'(A,I9,1P2E16.8)') |
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c & 'OBCS_balance it,areaE,flowE=', myIter, areaE, flowE |
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IF ( OBCS_balanceFacE.LT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileArea, areaE, myThid ) |
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IF ( areaE.GT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileFlow, flowE, myThid ) |
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IF ( debugLevel.GE.debLevC ) THEN |
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WRITE(msgBuf,'(A,I9,A,1P2E16.8)') 'OBCS_balance (it=', |
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& myIter, ' ) correct OBEu:', flowE, -flowE/areaE |
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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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flowE = -flowE/areaE |
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ENDIF |
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ENDIF |
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#endif /* ALLOW_OBCS_EAST */ |
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#ifdef ALLOW_OBCS_WEST |
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areaW = 0. _d 0 |
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flowW = 0. _d 0 |
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flag = flag .OR. ( OBCS_balanceFacW.GT.0. ) |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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tileArea(bi,bj) = 0. |
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tileFlow(bi,bj) = 0. |
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IF ( tileHasOBW(bi,bj) ) THEN |
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DO k=1,Nr |
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DO j=1,sNy |
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iB = OB_Iw(j,bi,bj) |
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C- If 1 OB location is on 2 tiles (@ edge of 2 tiles), select the one which |
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C communicates with tile interior (i=0) rather than with halo region (i=sNx) |
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IF ( iB.NE.OB_indexNone .AND. iB.LT.sNx ) THEN |
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tmpA = drF(k)*hFacW(1+iB,j,k,bi,bj)*dyG(1+iB,j,bi,bj) |
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& *maskInW(1+iB,j,bi,bj) |
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tileArea(bi,bj) = tileArea(bi,bj) + tmpA |
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tileFlow(bi,bj) = tileFlow(bi,bj) + tmpA*OBWu(j,k,bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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IF ( OBCS_balanceFacW.GE.0. ) THEN |
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tileInFlow(bi,bj) = tileInFlow(bi,bj) + tileFlow(bi,bj) |
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tileAreaOB(bi,bj) = tileAreaOB(bi,bj) |
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& + tileArea(bi,bj)*OBCS_balanceFacW |
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ENDIF |
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areaW = areaW + tileArea(bi,bj) |
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flowW = flowW + tileFlow(bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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c WRITE(standardMessageUnit,'(A,I9,1P2E16.8)') |
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c & 'OBCS_balance it,areaW,flowW=', myIter, areaW, flowW |
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IF ( OBCS_balanceFacW.LT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileArea, areaW, myThid ) |
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IF ( areaW.GT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileFlow, flowW, myThid ) |
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IF ( debugLevel.GE.debLevC ) THEN |
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WRITE(msgBuf,'(A,I9,A,1P2E16.8)') 'OBCS_balance (it=', |
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& myIter, ' ) correct OBWu:', flowW, -flowW/areaW |
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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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flowW = -flowW/areaW |
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ENDIF |
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ENDIF |
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#endif /* ALLOW_OBCS_WEST */ |
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#ifdef ALLOW_OBCS_NORTH |
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areaN = 0. _d 0 |
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flowN = 0. _d 0 |
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flag = flag .OR. ( OBCS_balanceFacN.GT.0. ) |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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tileArea(bi,bj) = 0. |
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tileFlow(bi,bj) = 0. |
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IF ( tileHasOBN(bi,bj) ) THEN |
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DO k=1,Nr |
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DO i=1,sNx |
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jB = OB_Jn(i,bi,bj) |
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C- If 1 OB location is on 2 tiles (@ edge of 2 tiles), select the one which |
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C communicates with tile interior (sNy+1) rather than with halo region (j=1) |
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IF ( jB.NE.OB_indexNone .AND. jB.GT.1 ) THEN |
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tmpA = drF(k)*hFacS(i,jB,k,bi,bj)*dxG(i,jB,bi,bj) |
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& *maskInS(i,jB,bi,bj) |
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tileArea(bi,bj) = tileArea(bi,bj) + tmpA |
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tileFlow(bi,bj) = tileFlow(bi,bj) + tmpA*OBNv(i,k,bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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IF ( OBCS_balanceFacN.GE.0. ) THEN |
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tileInFlow(bi,bj) = tileInFlow(bi,bj) - tileFlow(bi,bj) |
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tileAreaOB(bi,bj) = tileAreaOB(bi,bj) |
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& + tileArea(bi,bj)*OBCS_balanceFacN |
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ENDIF |
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areaN = areaN + tileArea(bi,bj) |
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flowN = flowN + tileFlow(bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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c WRITE(standardMessageUnit,'(A,I9,1P2E16.8)') |
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c & 'OBCS_balance it,areaN,flowN=', myIter, areaN, flowN |
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IF ( OBCS_balanceFacN.LT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileArea, areaN, myThid ) |
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IF ( areaN.GT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileFlow, flowN, myThid ) |
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IF ( debugLevel.GE.debLevC ) THEN |
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WRITE(msgBuf,'(A,I9,A,1P2E16.8)') 'OBCS_balance (it=', |
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& myIter, ' ) correct OBNv:', flowN, -flowN/areaN |
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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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flowN = -flowN/areaN |
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ENDIF |
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ENDIF |
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#endif /* ALLOW_OBCS_NORTH */ |
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#ifdef ALLOW_OBCS_SOUTH |
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areaS = 0. _d 0 |
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flowS = 0. _d 0 |
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flag = flag .OR. ( OBCS_balanceFacS.GT.0. ) |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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tileArea(bi,bj) = 0. |
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tileFlow(bi,bj) = 0. |
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IF ( tileHasOBS(bi,bj) ) THEN |
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DO k=1,Nr |
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DO i=1,sNx |
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jB = OB_Js(i,bi,bj) |
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C- If 1 OB location is on 2 tiles (@ edge of 2 tiles), select the one which |
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C communicates with tile interior (j=0) rather than with halo region (j=sNy) |
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IF ( jB.NE.OB_indexNone .AND. jB.LT.sNy ) THEN |
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tmpA = drF(k)*hFacS(i,1+jB,k,bi,bj)*dxG(i,1+jB,bi,bj) |
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& *maskInS(i,1+jB,bi,bj) |
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tileArea(bi,bj) = tileArea(bi,bj) + tmpA |
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tileFlow(bi,bj) = tileFlow(bi,bj) + tmpA*OBSv(i,k,bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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IF ( OBCS_balanceFacS.GE.0. ) THEN |
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tileInFlow(bi,bj) = tileInFlow(bi,bj) + tileFlow(bi,bj) |
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tileAreaOB(bi,bj) = tileAreaOB(bi,bj) |
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& + tileArea(bi,bj)*OBCS_balanceFacS |
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ENDIF |
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areaS = areaS + tileArea(bi,bj) |
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flowS = flowS + tileFlow(bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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c WRITE(standardMessageUnit,'(A,I9,1P2E16.8)') |
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c & 'OBCS_balance it,areaS,flowS=', myIter, areaS, flowS |
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IF ( OBCS_balanceFacS.LT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileArea, areaS, myThid ) |
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IF ( areaS.GT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileFlow, flowS, myThid ) |
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IF ( debugLevel.GE.debLevC ) THEN |
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WRITE(msgBuf,'(A,I9,A,1P2E16.8)') 'OBCS_balance (it=', |
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& myIter, ' ) correct OBSv:', flowS, -flowS/areaS |
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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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flowS = -flowS/areaS |
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ENDIF |
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ENDIF |
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#endif /* ALLOW_OBCS_SOUTH */ |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C-- Calculate a unique velocity correction for all (OBCS_balanceFac>0) OB |
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C and correct each OB using corresponding weight factor OBCS_balanceFac |
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IF ( flag ) CALL GLOBAL_SUM_TILE_RL( tileAreaOB, areaOB, myThid ) |
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IF ( areaOB.GT.0. ) THEN |
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CALL GLOBAL_SUM_TILE_RL( tileInFlow, inFlow, myThid ) |
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IF ( debugLevel.GE.debLevC ) THEN |
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WRITE(msgBuf,'(A,I9,A,1P2E16.8)') 'OBCS_balance (it=', |
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& myIter, ' ) correct for inFlow:', inFlow, inFlow/areaOB |
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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 KS16 is adding a velocity adjustment here -------------------- |
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C I need the sealevel average values, restore mean sealevel to 0 for |
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C now? Or should that be a variable too? |
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#ifdef ALLOW_SHELFICE |
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#ifdef ALLOW_SHELFICE_REMESHING |
| 311 |
|
|
IF ( conserve_ssh ) THEN |
| 312 |
|
|
SEALEVEL = 0. _d 0 |
| 313 |
|
|
ETA = 0. _d 0 |
| 314 |
|
|
CALL SHELFICE_SEA_LEVEL_AVG( SEALEVEL,ETA, myThid ) |
| 315 |
|
|
C Restore the open ocean ETA sum to 0 |
| 316 |
|
|
IF (ETA .NE. 0. _d 0) THEN |
| 317 |
|
|
inFlow = inFlow + ETA/deltaT |
| 318 |
|
|
ENDIF |
| 319 |
|
|
ENDIF |
| 320 |
|
|
#endif /* */ |
| 321 |
|
|
#endif /* ALLOW_SHELFICE */ |
| 322 |
|
|
C KS16 end----------------------------------------------------- |
| 323 |
|
|
|
| 324 |
|
|
inFlow = inFlow / areaOB |
| 325 |
|
|
ENDIF |
| 326 |
|
|
IF ( OBCS_balanceFacE.GE.0. ) flowE = inFlow*OBCS_balanceFacE |
| 327 |
|
|
IF ( OBCS_balanceFacW.GE.0. ) flowW = -inFlow*OBCS_balanceFacW |
| 328 |
|
|
IF ( OBCS_balanceFacN.GE.0. ) flowN = inFlow*OBCS_balanceFacN |
| 329 |
|
|
IF ( OBCS_balanceFacS.GE.0. ) flowS = -inFlow*OBCS_balanceFacS |
| 330 |
|
|
|
| 331 |
|
|
IF ( debugLevel.GE.debLevC .AND. areaOB.GT.0. ) THEN |
| 332 |
|
|
WRITE(msgBuf,'(A,1P2E16.8)') |
| 333 |
|
|
& 'OBCS_balance correction to OBEu,OBWu:', flowE, flowW |
| 334 |
|
|
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 335 |
|
|
& SQUEEZE_RIGHT, myThid ) |
| 336 |
|
|
WRITE(msgBuf,'(A,1P2E16.8)') |
| 337 |
|
|
& 'OBCS_balance correction to OBNv,OBSv:', flowN, flowS |
| 338 |
|
|
CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
| 339 |
|
|
& SQUEEZE_RIGHT, myThid ) |
| 340 |
|
|
ENDIF |
| 341 |
|
|
|
| 342 |
|
|
c IF ( .NOT.useOBCSbalance ) RETURN |
| 343 |
|
|
|
| 344 |
|
|
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 345 |
|
|
C-- Add correction: |
| 346 |
|
|
|
| 347 |
|
|
#ifdef ALLOW_OBCS_EAST |
| 348 |
|
|
IF ( OBCS_balanceFacE.NE.0. ) THEN |
| 349 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
| 350 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 351 |
|
|
IF ( tileHasOBE(bi,bj) ) THEN |
| 352 |
|
|
DO k=1,Nr |
| 353 |
|
|
DO j=1-OLy,sNy+OLy |
| 354 |
|
|
iB = OB_Ie(j,bi,bj) |
| 355 |
|
|
IF ( iB.NE.OB_indexNone ) THEN |
| 356 |
|
|
OBEu(j,k,bi,bj) = OBEu(j,k,bi,bj) |
| 357 |
|
|
& + flowE*maskW(iB,j,k,bi,bj) |
| 358 |
|
|
ENDIF |
| 359 |
|
|
ENDDO |
| 360 |
|
|
ENDDO |
| 361 |
|
|
ENDIF |
| 362 |
|
|
ENDDO |
| 363 |
|
|
ENDDO |
| 364 |
|
|
ENDIF |
| 365 |
|
|
#endif /* ALLOW_OBCS_EAST */ |
| 366 |
|
|
|
| 367 |
|
|
#ifdef ALLOW_OBCS_WEST |
| 368 |
|
|
IF ( OBCS_balanceFacW.NE.0. ) THEN |
| 369 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
| 370 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 371 |
|
|
IF ( tileHasOBW(bi,bj) ) THEN |
| 372 |
|
|
DO k=1,Nr |
| 373 |
|
|
DO j=1-OLy,sNy+OLy |
| 374 |
|
|
iB = OB_Iw(j,bi,bj) |
| 375 |
|
|
IF ( iB.NE.OB_indexNone ) THEN |
| 376 |
|
|
OBWu(j,k,bi,bj) = OBWu(j,k,bi,bj) |
| 377 |
|
|
& + flowW*maskW(1+iB,j,k,bi,bj) |
| 378 |
|
|
ENDIF |
| 379 |
|
|
ENDDO |
| 380 |
|
|
ENDDO |
| 381 |
|
|
ENDIF |
| 382 |
|
|
ENDDO |
| 383 |
|
|
ENDDO |
| 384 |
|
|
ENDIF |
| 385 |
|
|
#endif /* ALLOW_OBCS_WEST */ |
| 386 |
|
|
|
| 387 |
|
|
#ifdef ALLOW_OBCS_NORTH |
| 388 |
|
|
C KS16. There was a bug here. Used to say OBCS_balanceFacW, not |
| 389 |
|
|
C FacN!!! |
| 390 |
|
|
IF ( OBCS_balanceFacN.NE.0. ) THEN |
| 391 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
| 392 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 393 |
|
|
IF ( tileHasOBN(bi,bj) ) THEN |
| 394 |
|
|
DO k=1,Nr |
| 395 |
|
|
DO i=1-OLx,sNx+OLx |
| 396 |
|
|
jB = OB_Jn(i,bi,bj) |
| 397 |
|
|
IF ( jB.NE.OB_indexNone ) THEN |
| 398 |
|
|
OBNv(i,k,bi,bj) = OBNv(i,k,bi,bj) |
| 399 |
|
|
& + flowN*maskS(i,jB,k,bi,bj) |
| 400 |
|
|
ENDIF |
| 401 |
|
|
ENDDO |
| 402 |
|
|
ENDDO |
| 403 |
|
|
ENDIF |
| 404 |
|
|
ENDDO |
| 405 |
|
|
ENDDO |
| 406 |
|
|
ENDIF |
| 407 |
|
|
#endif /* ALLOW_OBCS_NORTH */ |
| 408 |
|
|
|
| 409 |
|
|
#ifdef ALLOW_OBCS_SOUTH |
| 410 |
|
|
IF ( OBCS_balanceFacS.NE.0. ) THEN |
| 411 |
|
|
DO bj=myByLo(myThid),myByHi(myThid) |
| 412 |
|
|
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 413 |
|
|
IF ( tileHasOBS(bi,bj) ) THEN |
| 414 |
|
|
DO k=1,Nr |
| 415 |
|
|
DO i=1-OLx,sNx+OLx |
| 416 |
|
|
jB = OB_Js(i,bi,bj) |
| 417 |
|
|
IF ( jB.NE.OB_indexNone ) THEN |
| 418 |
|
|
OBSv(i,k,bi,bj) = OBSv(i,k,bi,bj) |
| 419 |
|
|
& + flowS*maskS(i,1+jB,k,bi,bj) |
| 420 |
|
|
ENDIF |
| 421 |
|
|
ENDDO |
| 422 |
|
|
ENDDO |
| 423 |
|
|
ENDIF |
| 424 |
|
|
ENDDO |
| 425 |
|
|
ENDDO |
| 426 |
|
|
ENDIF |
| 427 |
|
|
#endif /* ALLOW_OBCS_SOUTH */ |
| 428 |
|
|
|
| 429 |
|
|
#ifdef ALLOW_DEBUG |
| 430 |
|
|
IF (debugMode) CALL DEBUG_LEAVE('OBCS_BALANCE_FLOW',myThid) |
| 431 |
|
|
#endif |
| 432 |
|
|
|
| 433 |
|
|
#endif /* ALLOW_OBCS_BALANCE */ |
| 434 |
|
|
#endif /* ALLOW_OBCS */ |
| 435 |
|
|
|
| 436 |
|
|
RETURN |
| 437 |
|
|
END |
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