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tmpx2 = df
IF ( df < limxdiff ) numx2 = numx2 + 1
IF ( df < histsize ) histx2(df+1) = histx2(df+1) + 1
ENDIF
IF (iypos(ji+1,jj) > 0) THEN
df = ABS( iypos(ji+1,jj) - iypos(ji,jj) )
tmpy1 = df
IF ( df < limydiff ) numy1 = numy1 + 1
IF ( df < histsize ) histy1(df+1) = histy1(df+1) + 1
ENDIF
IF (iypos(ji,jj+1) > 0) THEN
df = ABS( iypos(ji,jj+1) - iypos(ji,jj) )
tmpy2 = df
IF ( df < limydiff ) numy2 = numy2+1
IF ( df < histsize ) histy2(df+1) = histy2(df+1)+1
ENDIF
IF ( maxxdiff < tmpx1 .AND. tmpx1 < limxdiff ) &
& maxxdiff = tmpx1
IF ( maxxdiff < tmpx2 .AND. tmpx2 < limxdiff ) &
& maxxdiff = tmpx2
IF ( maxydiff < tmpy1 .AND. tmpy1 < limydiff ) &
& maxydiff = tmpy1
IF ( maxydiff < tmpy2 .AND. tmpy2 < limydiff ) &
& maxydiff = tmpy2
ENDIF
END DO
END DO
! cumulative histograms
DO ji = 1, histsize - 1
histx1(ji+1) = histx1(ji+1) + histx1(ji)
histx2(ji+1) = histx2(ji+1) + histx2(ji)
histy1(ji+1) = histy1(ji+1) + histy1(ji)
histy2(ji+1) = histy2(ji+1) + histy2(ji)
END DO
fhistx1(:) = histx1(:) * 1.0 / numx1
fhistx2(:) = histx2(:) * 1.0 / numx2
fhisty1(:) = histy1(:) * 1.0 / numy1
fhisty2(:) = histy2(:) * 1.0 / numy2
! output new histograms
IF (lwp) THEN
WRITE(numout,*) 'cumulative histograms'
WRITE(numout,*) '0 1 2 3 4 5 6 7 8 9 10 ...'
WRITE(numout,*) 'fhistx1'
WRITE(numout,*) fhistx1
WRITE(numout,*) 'fhistx2'
WRITE(numout,*) fhistx2
WRITE(numout,*) 'fhisty1'
WRITE(numout,*) fhisty1
WRITE(numout,*) 'fhisty2'
WRITE(numout,*) fhisty2
ENDIF
! calculate maxxdiff and maxydiff based on cumulative histograms
! where > 0.999 of points are
! maxval just converts 1x1 vector return from maxloc to a scalar
histtol = 0.999
tmpx1 = MAXVAL( MAXLOC( fhistx1(:), mask = ( fhistx1(:) <= histtol ) ) )
tmpx2 = MAXVAL( MAXLOC( fhistx2(:), mask = ( fhistx2(:) <= histtol ) ) )
tmpy1 = MAXVAL( MAXLOC( fhisty1(:), mask = ( fhisty1(:) <= histtol ) ) )
tmpy2 = MAXVAL( MAXLOC( fhisty2(:), mask = ( fhisty2(:) <= histtol ) ) )
maxxdiff = MAXVAL( (/ tmpx1, tmpx2 /) ) + 1
maxydiff = MAXVAL( (/ tmpy1, tmpy2 /) ) + 1
! Write out data
IF ( ( .NOT. ln_grid_global ) .OR. &
& ( ( ln_grid_global ) .AND. ( narea-1==0 ) ) ) THEN
CALL chkerr( nf90_create (TRIM(cfname), nf90_clobber, idfile), &
& cpname, __LINE__ )
CALL chkerr( nf90_put_att( idfile, nf90_global, 'title', &
& 'Mapping file from lon/lat to model grid point' ),&
& cpname,__LINE__ )
CALL chkerr( nf90_put_att( idfile, nf90_global, 'maxxdiff', &
& maxxdiff ), &
& cpname,__LINE__ )
CALL chkerr( nf90_put_att( idfile, nf90_global, 'maxydiff', &
& maxydiff ), &
& cpname,__LINE__ )
CALL chkerr( nf90_put_att( idfile, nf90_global, 'dlon', dlon ),&
& cpname,__LINE__ )
CALL chkerr( nf90_put_att( idfile, nf90_global, 'dlat', dlat ),&
& cpname,__LINE__ )
CALL chkerr( nf90_put_att( idfile, nf90_global, 'lonmin', &
& lonmin ), &
& cpname,__LINE__ )
CALL chkerr( nf90_put_att( idfile, nf90_global, 'latmin', &
& latmin ), &
& cpname,__LINE__ )
CALL chkerr( nf90_def_dim(idfile, 'nx' , nlons, idnx), &
& cpname,__LINE__ )
CALL chkerr( nf90_def_dim(idfile, 'ny' , nlats, idny), &
& cpname,__LINE__ )
incdim(1) = idnx
incdim(2) = idny
CALL chkerr( nf90_def_var( idfile, 'LON', nf90_float, incdim, &
& idlon ), &
& cpname, __LINE__ )
CALL chkerr( nf90_put_att( idfile, idlon, 'long_name', &
& 'longitude' ), &
& cpname, __LINE__ )
CALL chkerr( nf90_def_var( idfile, 'LAT', nf90_float, incdim, &
& idlat ), &
& cpname, __LINE__ )
CALL chkerr( nf90_put_att( idfile, idlat, 'long_name', &
& 'latitude' ), &
& cpname, __LINE__ )
CALL chkerr( nf90_def_var( idfile, 'XPOS', nf90_int, incdim, &
& idxpos ), &
& cpname, __LINE__ )
CALL chkerr( nf90_put_att( idfile, idxpos, 'long_name', &
& 'x position' ), &
& cpname, __LINE__ )
CALL chkerr( nf90_put_att( idfile, idxpos, '_FillValue', -1 ), &
& cpname, __LINE__ )
CALL chkerr( nf90_def_var( idfile, 'YPOS', nf90_int, incdim, &
& idypos ), &
& cpname, __LINE__ )
CALL chkerr( nf90_put_att( idfile, idypos, 'long_name', &
& 'y position' ), &
& cpname, __LINE__ )
CALL chkerr( nf90_put_att( idfile, idypos, '_FillValue', -1 ), &
& cpname, __LINE__ )
CALL chkerr( nf90_enddef( idfile ), cpname, __LINE__ )
CALL chkerr( nf90_put_var( idfile, idlon, lons), &
& cpname, __LINE__ )
CALL chkerr( nf90_put_var( idfile, idlat, lats), &
& cpname, __LINE__ )
CALL chkerr( nf90_put_var( idfile, idxpos, ixpos), &
& cpname, __LINE__ )
CALL chkerr( nf90_put_var( idfile, idypos, iypos), &
& cpname, __LINE__ )
CALL chkerr( nf90_close( idfile ), cpname, __LINE__ )
! should also output max i, max j spacing for use in
! obs_grid_search_lookup
ENDIF
ENDIF
ENDIF
END SUBROUTINE obs_grid_setup
SUBROUTINE obs_grid_deallocate( )
!!----------------------------------------------------------------------
!! *** ROUTINE obs_grid_setup ***
!!
!! ** Purpose : Deallocate arrays setup by obs_grid_setup
!!
!! History :
!! ! 2007-12 (D. Lea) new routine
!!-----------------------------------------------------------------------
IF (ln_grid_search_lookup) THEN
DEALLOCATE( lons, lats, ixpos, iypos, iprocn )
ENDIF
END SUBROUTINE obs_grid_deallocate
#include "obs_level_search.h90"
#include "linquad.h90"
#include "maxdist.h90"
#include "find_obs_proc.h90"
END MODULE obs_grid