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C $Header: /u/gcmpack/MITgcm_contrib/gael/pkg/smooth2/smooth_correl2D.F,v 1.1 2009/10/25 21:24:03 gforget Exp $ |
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C $Name: $ |
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#include "SMOOTH_OPTIONS.h" |
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subroutine smooth_correl2D ( |
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U fld_in,mask_in,smoothOpNb,mythid) |
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C *==========================================================* |
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C | SUBROUTINE smooth_correl2D |
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C | o Routine that applies spatial correlation |
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C | operator to a 2D control field |
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C *==========================================================* |
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IMPLICIT NONE |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "GRID.h" |
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#include "PARAMS.h" |
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c#include "tamc.h" |
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#include "SMOOTH.h" |
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_RL mask_in(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nR,nSx,nSy) |
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_RL fld_in(1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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integer smoothOpNb |
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integer nbt_in |
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character*( 80) fnamegeneric |
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integer i,j,bi,bj |
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integer itlo,ithi |
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integer jtlo,jthi |
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integer myThid |
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jtlo = mybylo(mythid) |
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jthi = mybyhi(mythid) |
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itlo = mybxlo(mythid) |
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ithi = mybxhi(mythid) |
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c read smoothing [i.e diffusion] operator: |
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write(fnamegeneric(1:80),'(1a,i3.3)') |
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& 'smooth2Doperator',smoothOpNb |
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CALL READ_REC_3D_RL(fnamegeneric,smoothprec, |
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& 1, smooth2D_Kux,1,1,mythid) |
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CALL READ_REC_3D_RL(fnamegeneric,smoothprec, |
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& 1, smooth2D_Kvy,2,1,mythid) |
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_EXCH_XY_RL ( smooth2D_Kux, myThid ) |
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_EXCH_XY_RL ( smooth2D_Kvy, myThid ) |
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c read normalization field [i.e. 1/sqrt(var(filter))]: |
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write(fnamegeneric(1:80),'(1a,i3.3)') |
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& 'smooth2Dnorm',smoothOpNb |
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CALL READ_REC_3D_RL(fnamegeneric,smoothprec, |
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& 1, smooth2Dnorm,1,1,mythid) |
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_EXCH_XY_RL ( smooth2Dnorm, myThid ) |
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c division by ~sqrt(area): |
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DO bj = jtlo,jthi |
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DO bi = itlo,ithi |
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DO j = 1,sNy |
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DO i = 1,sNx |
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fld_in(i,j,bi,bj)=fld_in(i,j,bi,bj) |
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& *sqrt(recip_rA(i,j,bi,bj)) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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_EXCH_XY_RL ( fld_in , myThid ) |
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c do the smoothing: |
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nbt_in=smooth2Dnbt(smoothOpNb)/2 |
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call smooth_diff2D(fld_in,mask_in,nbt_in,mythid) |
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c division by ~sqrt(var(filter)): |
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do bj = jtlo,jthi |
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do bi = itlo,ithi |
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DO j = 1,sNy |
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DO i = 1,sNx |
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fld_in(i,j,bi,bj)=fld_in(i,j,bi,bj) |
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& *smooth2Dnorm(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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_EXCH_XY_RL ( fld_in , myThid ) |
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end |
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