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C $Header: /u/gcmpack/MITgcm/pkg/down_slope/dwnslp_init_fixed.F,v 1.2 2010/04/23 13:19:26 jmc Exp $ |
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C $Name: $ |
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|
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#include "DWNSLP_OPTIONS.h" |
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|
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CBOP |
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C !ROUTINE: DWNSLP_INIT_FIXED |
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C !INTERFACE: |
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SUBROUTINE DWNSLP_INIT_FIXED( myThid ) |
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|
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | SUBROUTINE DWNSLP_INIT_FIXED |
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C | o Routine to initialize Down-Sloping arrays ; |
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C | find potential location of Down-Sloping flow. |
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C *==========================================================* |
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C \ev |
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|
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C !USES: |
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IMPLICIT NONE |
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|
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C === Global variables === |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "GRID.h" |
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#include "DWNSLP_SIZE.h" |
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#include "DWNSLP_PARAMS.h" |
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#include "DWNSLP_VARS.h" |
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|
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C !INPUT/OUTPUT PARAMETERS: |
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C === Routine arguments === |
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INTEGER myThid |
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|
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#ifdef ALLOW_DOWN_SLOPE |
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|
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C !LOCAL VARIABLES: |
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C === Local variables === |
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C msgBuf :: Informational/error message buffer |
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C logFname,STATUS='UNKNOWN') |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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CHARACTER*(19) logFname |
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INTEGER i, j, k |
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INTEGER bi, bj |
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INTEGER n, ncount, ijd, ijr |
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INTEGER ideep, jdeep, kdeep, dkMx |
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INTEGER ishelf,jshelf,kshelf |
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INTEGER downward |
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_RL dz_bottom |
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_RL drFlowMin |
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CEOP |
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|
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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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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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C- Initialize common bloc arrays : |
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|
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DWNSLP_NbSite(bi,bj) = 0 |
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DO n=1,DWNSLP_size |
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DWNSLP_ijDeep(n,bi,bj) = 0 |
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DWNSLP_shVsD(n,bi,bj) = 0 |
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DWNSLP_deepK(n,bi,bj) = 0 |
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DWNSLP_Gamma(n,bi,bj) = 0. |
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DWNSLP_Transp(n,bi,bj) = 0. |
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ENDDO |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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C---- set list of bathymetric step (= potential location of Down-Sloping flow) |
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ncount = 0 |
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|
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IF ( gravitySign.GT.0. ) THEN |
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C-- gravity > 0 (p-Coord) |
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|
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C- in X direction (U-flow): |
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DO j=1,sNy |
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DO i=1,sNx+1 |
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IF ( kSurfW(i,j,bi,bj).LE.Nr ) THEN |
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|
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IF ( kSurfC(i,j,bi,bj).LT.kSurfC(i-1,j,bi,bj) ) THEN |
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ncount = ncount + 1 |
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IF ( ncount.LE.DWNSLP_size ) THEN |
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DWNSLP_ijDeep(ncount,bi,bj) = |
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& 1 + (i+OLx-1) + (j+OLy-1)*xSize |
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DWNSLP_shVsD(ncount,bi,bj) = -1 |
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ENDIF |
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ENDIF |
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|
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IF ( kSurfC(i,j,bi,bj).GT.kSurfC(i-1,j,bi,bj) ) THEN |
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ncount = ncount + 1 |
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IF ( ncount.LE.DWNSLP_size ) THEN |
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DWNSLP_ijDeep(ncount,bi,bj) = |
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& 1 + (i-1+OLx-1) + (j+OLy-1)*xSize |
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DWNSLP_shVsD(ncount,bi,bj) = 1 |
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ENDIF |
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ENDIF |
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|
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ENDIF |
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ENDDO |
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ENDDO |
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|
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C- in Y direction (V-flow): |
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|
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DO j=1,sNy+1 |
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DO i=1,sNx |
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IF ( kSurfS(i,j,bi,bj).LE.Nr ) THEN |
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|
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IF ( kSurfC(i,j,bi,bj).LT.kSurfC(i,j-1,bi,bj) ) THEN |
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ncount = ncount + 1 |
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IF ( ncount.LE.DWNSLP_size ) THEN |
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DWNSLP_ijDeep(ncount,bi,bj) = |
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& 1 + (i+OLx-1) + (j+OLy-1)*xSize |
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DWNSLP_shVsD(ncount,bi,bj) = -xSize |
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ENDIF |
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ENDIF |
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|
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IF ( kSurfC(i,j,bi,bj).GT.kSurfC(i,j-1,bi,bj) ) THEN |
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ncount = ncount + 1 |
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IF ( ncount.LE.DWNSLP_size ) THEN |
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DWNSLP_ijDeep(ncount,bi,bj) = |
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& 1 + (i+OLx-1) + (j-1+OLy-1)*xSize |
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DWNSLP_shVsD(ncount,bi,bj) = xSize |
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ENDIF |
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ENDIF |
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|
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ENDIF |
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ENDDO |
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ENDDO |
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|
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ELSE |
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C-- gravity < 0 (z-Coord) |
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|
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C- in X direction (U-flow): |
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|
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DO j=1,sNy |
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DO i=1,sNx+1 |
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IF ( kSurfW(i,j,bi,bj).LE.Nr ) THEN |
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|
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IF ( kLowC(i,j,bi,bj).GT.kLowC(i-1,j,bi,bj) ) THEN |
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ncount = ncount + 1 |
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IF ( ncount.LE.DWNSLP_size ) THEN |
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DWNSLP_ijDeep(ncount,bi,bj) = |
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& 1 + (i+OLx-1) + (j+OLy-1)*xSize |
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DWNSLP_shVsD(ncount,bi,bj) = -1 |
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ENDIF |
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ENDIF |
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|
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IF ( kLowC(i,j,bi,bj).LT.kLowC(i-1,j,bi,bj) ) THEN |
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ncount = ncount + 1 |
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IF ( ncount.LE.DWNSLP_size ) THEN |
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DWNSLP_ijDeep(ncount,bi,bj) = |
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& 1 + (i-1+OLx-1) + (j+OLy-1)*xSize |
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DWNSLP_shVsD(ncount,bi,bj) = 1 |
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ENDIF |
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ENDIF |
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|
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ENDIF |
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ENDDO |
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ENDDO |
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|
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C- in Y direction (V-flow): |
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|
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DO j=1,sNy+1 |
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DO i=1,sNx |
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IF ( kSurfS(i,j,bi,bj).LE.Nr ) THEN |
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|
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IF ( kLowC(i,j,bi,bj).GT.kLowC(i,j-1,bi,bj) ) THEN |
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ncount = ncount + 1 |
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IF ( ncount.LE.DWNSLP_size ) THEN |
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DWNSLP_ijDeep(ncount,bi,bj) = |
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& 1 + (i+OLx-1) + (j+OLy-1)*xSize |
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DWNSLP_shVsD(ncount,bi,bj) = -xSize |
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ENDIF |
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ENDIF |
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|
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IF ( kLowC(i,j,bi,bj).LT.kLowC(i,j-1,bi,bj) ) THEN |
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ncount = ncount + 1 |
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IF ( ncount.LE.DWNSLP_size ) THEN |
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DWNSLP_ijDeep(ncount,bi,bj) = |
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& 1 + (i+OLx-1) + (j-1+OLy-1)*xSize |
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DWNSLP_shVsD(ncount,bi,bj) = xSize |
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ENDIF |
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ENDIF |
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|
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ENDIF |
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ENDDO |
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ENDDO |
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|
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C-- end if gravitySign block |
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ENDIF |
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|
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C- Store the Nb of bathymetric steps (=maximum Nb of Downsloping-flow site) |
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DWNSLP_NbSite(bi,bj) = ncount |
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|
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C- Check dimension : |
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IF (ncount.GT.DWNSLP_size) THEN |
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WRITE(msgBuf,'(A,I8,A)') |
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& ' DWNSLP_INIT: DWNSLP_size=',DWNSLP_size,' too small !' |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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WRITE(msgBuf,'(A,2I4,A,I8)') |
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& ' DWNSLP_INIT: min needed for tile',bi,bj,' :', ncount |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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STOP 'ABNORMAL END: S/R DWNSLP_INIT' |
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ENDIF |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C- Compute geometric factor Gamma = slope * effective cross section area |
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DO n=1,DWNSLP_NbSite(bi,bj) |
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|
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ijd = DWNSLP_ijDeep(n,bi,bj) |
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ideep = 1-OLx + MOD(ijd-1,xSize) |
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jdeep = 1-Oly + (ijd-1)/xSize |
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ijr = DWNSLP_shVsD(n,bi,bj) |
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ishelf = ideep + MOD(ijr,xSize) |
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jshelf = jdeep + ijr/xSize |
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IF ( usingPCoords ) THEN |
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kdeep = kSurfC(ideep, jdeep, bi,bj) |
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kshelf = kSurfC(ishelf,jshelf,bi,bj) |
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downward = -1 |
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ELSE |
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kdeep = kLowC (ideep, jdeep, bi,bj) |
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kshelf = kLowC (ishelf,jshelf,bi,bj) |
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downward = 1 |
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ENDIF |
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|
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i= MAX(ideep,ishelf) |
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j= MAX(jdeep,jshelf) |
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|
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C-- calculate the minimum level thickness between kshelf & kdeep: |
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drFlowMin = DWNSLP_drFlow |
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DO k = kshelf,kdeep,downward |
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drFlowMin = MIN( drFlowMin, |
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& drF(k)*hFacC(ideep,jdeep,k,bi,bj) ) |
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ENDDO |
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|
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IF (DWNSLP_slope.NE.0.) THEN |
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C-- Use fixed slope = DWNSLP_slope : |
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IF (ABS(ijr).EQ.1) THEN |
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C- slope along X dir: |
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DWNSLP_Gamma(n,bi,bj) = DWNSLP_slope*dyG(i,j,bi,bj) |
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& *MIN( drF(kshelf)*hFacW(i,j,kshelf,bi,bj), drFlowMin ) |
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ELSE |
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C- slope along Y dir: |
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DWNSLP_Gamma(n,bi,bj) = DWNSLP_slope*dxG(i,j,bi,bj) |
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& *MIN( drF(kshelf)*hFacS(i,j,kshelf,bi,bj), drFlowMin ) |
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ENDIF |
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ELSE |
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C-- Compute and use the local slope : |
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IF ( usingPCoords ) THEN |
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dz_bottom = Ro_surf(ideep,jdeep,bi,bj) |
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& - Ro_surf(ishelf,jshelf,bi,bj) |
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C a quick way to convert Delta.P to Delta.Z : |
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dz_bottom = dz_bottom*recip_gravity*recip_rhoConst |
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ELSE |
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dz_bottom = R_low(ishelf,jshelf,bi,bj) |
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& - R_low(ideep,jdeep,bi,bj) |
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ENDIF |
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IF (ABS(ijr).EQ.1) THEN |
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C- slope along X dir: |
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DWNSLP_Gamma(n,bi,bj) = dz_bottom*recip_dxC(i,j,bi,bj) |
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& *dyG(i,j,bi,bj) |
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& *MIN( drF(kshelf)*hFacW(i,j,kshelf,bi,bj), drFlowMin ) |
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ELSE |
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C- slope along Y dir: |
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DWNSLP_Gamma(n,bi,bj) = dz_bottom*recip_dyC(i,j,bi,bj) |
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& *dxG(i,j,bi,bj) |
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& *MIN( drF(kshelf)*hFacS(i,j,kshelf,bi,bj), drFlowMin ) |
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ENDIF |
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|
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ENDIF |
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|
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ENDDO |
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|
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C- end bi,bj loops. |
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ENDDO |
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ENDDO |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C- Print usefull variables : |
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_BARRIER |
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_BEGIN_MASTER(myThid) |
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|
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DWNSLP_ioUnit = 0 |
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IF ( debugLevel.GE.debLevA ) THEN |
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CALL MDSFINDUNIT( DWNSLP_ioUnit, myThid ) |
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ENDIF |
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IF ( DWNSLP_ioUnit.GT.0 ) THEN |
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WRITE(logFname,'(A11,I4.4,A4)') 'down_slope.',myProcId,'.log' |
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OPEN(DWNSLP_ioUnit,FILE=logFname,STATUS='UNKNOWN') |
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ENDIF |
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|
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DO bj = 1,nSy |
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DO bi = 1,nSx |
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|
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WRITE(msgBuf,'(A,2I4,I8)') |
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& 'DWNSLP_INIT: DWNSLP_NbSite=',bi,bj,DWNSLP_NbSite(bi,bj) |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT, myThid ) |
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C--- |
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IF ( DWNSLP_ioUnit.GT.0 ) THEN |
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WRITE(DWNSLP_ioUnit,'(A,2I4,2I8)') |
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& ' DWNSLP_INIT: bi,bj, DWNSLP_NbSite, xSize =', |
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& bi,bj, DWNSLP_NbSite(bi,bj), xSize |
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WRITE(DWNSLP_ioUnit,'(A)') |
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& ' bi bj n : ijd is js , ijr ks dkMx Gamma :' |
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DO n=1,DWNSLP_NbSite(bi,bj) |
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ijd = DWNSLP_ijDeep(n,bi,bj) |
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ideep = 1-OLx + MOD(ijd-1,xSize) |
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jdeep = 1-Oly + (ijd-1)/xSize |
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ijr = DWNSLP_shVsD(n,bi,bj) |
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ishelf = ideep + MOD(ijr,xSize) |
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jshelf = jdeep + ijr/xSize |
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IF ( usingPCoords ) THEN |
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kshelf = kSurfC(ishelf,jshelf,bi,bj) |
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dkMx = kshelf - kSurfC(ideep,jdeep,bi,bj) |
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ELSE |
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kshelf = kLowC (ishelf,jshelf,bi,bj) |
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dkMx = kLowC (ideep,jdeep,bi,bj) - kshelf |
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ENDIF |
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WRITE(DWNSLP_ioUnit,'(2I4,I6,A,I8,2I4,A,I6,2I4,1PE14.6)') |
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& bi,bj,n, ' :', ijd, ideep, jdeep, |
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& ' ,', ijr, kshelf, dkMx, DWNSLP_Gamma(n,bi,bj) |
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ENDDO |
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WRITE(DWNSLP_ioUnit,*) |
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ENDIF |
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C--- |
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ENDDO |
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ENDDO |
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IF ( DWNSLP_ioUnit.GT.0 .AND. debugLevel.LT.debLevD ) THEN |
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CLOSE(DWNSLP_ioUnit) |
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DWNSLP_ioUnit = 0 |
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ENDIF |
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|
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_END_MASTER(myThid) |
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|
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#ifdef ALLOW_DIAGNOSTICS |
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IF ( useDiagnostics ) THEN |
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CALL DWNSLP_DIAGNOSTICS_INIT( myThid ) |
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ENDIF |
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#endif |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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#endif /* ALLOW_DOWN_SLOPE */ |
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RETURN |
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END |
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