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exf_filter_rl.F
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exf_filter_rl.F
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C $Header: /u/gcmpack/MITgcm/pkg/exf/exf_filter_rl.F,v 1.10 2012/01/03 17:49:46 jmc Exp $
C $Name: $
#include "EXF_OPTIONS.h"
SUBROUTINE EXF_FILTER_RL(
U arr,
I ckind, myThid )
C ==================================================================
C SUBROUTINE EXF_FILTER_RL
C ==================================================================
C
C o apply mask to input field
C
C ==================================================================
C SUBROUTINE EXF_FILTER_RL
C ==================================================================
IMPLICIT NONE
C == global variables ==
#include "EEPARAMS.h"
#include "SIZE.h"
#include "PARAMS.h"
#include "GRID.h"
c#include "EXF_CONSTANTS.h"
C == routine arguments ==
_RL arr(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
CHARACTER*1 ckind
INTEGER myThid
C == local variables ==
INTEGER bi,bj
INTEGER i,j, ks
C == end of interface ==
C filter forcing field array
IF ( ckind.NE.' ' ) THEN
ks = 1
IF ( usingPCoords ) ks = Nr
DO bj = myByLo(myThid), myByHi(myThid)
DO bi = myBxLo(myThid), myBxHi(myThid)
C Set undefined values to zero.
Crg not necessary and
Crg would require additional intermediate results in adjoint
crg DO j = 1,sNy
crg DO i = 1,sNx
crg IF (arr(i,j,bi,bj) .LE. exf_undef) THEN
crg arr(i,j,bi,bj) = 0. _d 0
crg ENDIF
crg ENDDO
crg ENDDO
C Set land points to zero
IF ( ckind .EQ. 'c' ) THEN
DO j = 1,sNy
DO i = 1,sNx
IF ( maskC(i,j,ks,bi,bj) .EQ. 0. ) THEN
arr(i,j,bi,bj) = 0. _d 0
ENDIF
ENDDO
ENDDO
ELSEIF ( ckind .EQ. 'w' ) THEN
DO j = 1,sNy
DO i = 1,sNx
IF ( maskW(i,j,ks,bi,bj) .EQ. 0. ) THEN
arr(i,j,bi,bj) = 0. _d 0
ENDIF
ENDDO
ENDDO
ELSEIF ( ckind .EQ. 's' ) THEN
DO j = 1,sNy
DO i = 1,sNx
IF ( maskS(i,j,ks,bi,bj) .EQ. 0. ) THEN
arr(i,j,bi,bj) = 0. _d 0
ENDIF
ENDDO
ENDDO
ENDIF
ENDDO
ENDDO
ENDIF
RETURN
END