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michaesp |
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PROGRAM def_anomaly
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c ************************************************************************
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c * Define a PV anomaly and set it up for inversion. Additionally, the *
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c * lateral and upper/lower boundary values for potential temperature *
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c * and wind are set *
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c * Michael Sprenger / Spring 2005 *
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c ************************************************************************
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implicit none
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c ------------------------------------------------------------------------
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c Declaration of subroutine parameters
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c ------------------------------------------------------------------------
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c Numerical epsilon
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real eps
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parameter (eps=0.01)
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c Variables for input Z file : height level
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character*80 in_zfn,in_varname
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real in_varmin(4),in_varmax(4),in_stag(4)
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integer in_vardim(4)
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real in_mdv
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integer in_ndim
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integer in_nx,in_ny,in_nz
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real in_xmin,in_xmax,in_ymin,in_ymax,in_dx,in_dy
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integer in_ntimes
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real in_aklev(1000),in_bklev(1000)
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real in_aklay(1000),in_bklay(1000)
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real in_time
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real in_pollon,in_pollat
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integer in_idate(5)
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integer in_nvars
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character*80 in_vnam(100)
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real,allocatable, dimension (:,:,:) :: in_field
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real,allocatable, dimension (:,:,:) :: in_filt
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real,allocatable, dimension (:,:,:) :: in_anom
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real,allocatable, dimension (:,:) :: in_x,in_y
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real,allocatable, dimension (:,:,:) :: th_anom
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real,allocatable, dimension (:,:,:) :: uu_anom,vv_anom
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c Filtering
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real f_xmin,f_xmax
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real f_ymin,f_ymax
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real f_zmin,f_zmax
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integer nfilt
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real boundxy,boundz
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real,allocatable, dimension (:,:) :: tmp
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c Auxiliary variables
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integer i,j,k,l,n
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integer cdfid,cstid
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integer ierr,stat
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character*80 cfn
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real xpt,ypt,zpt
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integer isok
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character*80 varname,cdfname
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character*80 parfile
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real distxy,distz,distz1,distz2
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integer indx,indy,indz
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real sum
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integer count
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character*80 name
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c Externals
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real kink
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external kink
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c ------------------------------------------------------------------------
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c Preparations
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c ------------------------------------------------------------------------
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print*,'*********************************************************'
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print*,'* def_anomaly *'
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print*,'*********************************************************'
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c Set name of the PV variable
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in_varname='PV'
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c Read parameters
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open(10,file='fort.10')
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read(10,*) in_zfn
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read(10,*) name,f_xmin
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if ( trim(name).ne.'BOX_XMIN') stop
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read(10,*) name,f_xmax
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if ( trim(name).ne.'BOX_XMAX') stop
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read(10,*) name,f_ymin
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if ( trim(name).ne.'BOX_YMIN') stop
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read(10,*) name,f_ymax
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if ( trim(name).ne.'BOX_YMAX') stop
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read(10,*) name,f_zmin
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if ( trim(name).ne.'BOX_ZMIN') stop
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read(10,*) name,f_zmax
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if ( trim(name).ne.'BOX_ZMAX') stop
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read(10,*) name,nfilt
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if ( trim(name).ne.'NFILTER' ) stop
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read(10,*) name,boundxy
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if ( trim(name).ne.'BOUND_XY') stop
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read(10,*) name,boundz
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if ( trim(name).ne.'BOUND_Z') stop
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close(10)
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print*,'Filter domain, x: ', f_xmin,f_xmax
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print*,' y: ', f_ymin,f_ymax
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print*,' z: ', f_zmin,f_zmax
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print*,'Nfilt: ',nfilt
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print*,'Boundxy,z: ',boundxy,boundz
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c Get grid description for Z file : height levels
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call cdfopn(in_zfn,cdfid,ierr)
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if (ierr.ne.0) goto 998
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call getcfn(cdfid,cfn,ierr)
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if (ierr.ne.0) goto 998
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call cdfopn(cfn,cstid,ierr)
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if (ierr.ne.0) goto 998
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call getvars(cdfid,in_nvars,in_vnam,ierr)
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if (ierr.ne.0) goto 998
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call getdef(cdfid,in_varname,in_ndim,in_mdv,in_vardim,
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> in_varmin,in_varmax,in_stag,ierr)
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if (ierr.ne.0) goto 998
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in_nx =in_vardim(1)
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in_ny =in_vardim(2)
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in_nz =in_vardim(3)
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in_xmin=in_varmin(1)
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in_ymin=in_varmin(2)
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call getlevs(cstid,in_nz,in_aklev,in_bklev,in_aklay,in_bklay,ierr)
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if (ierr.ne.0) goto 998
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call getgrid(cstid,in_dx,in_dy,ierr)
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if (ierr.ne.0) goto 998
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in_xmax=in_xmin+real(in_nx-1)*in_dx
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in_ymax=in_ymin+real(in_ny-1)*in_dy
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call gettimes(cdfid,in_time,in_ntimes,ierr)
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if (ierr.ne.0) goto 998
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call getstart(cstid,in_idate,ierr)
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if (ierr.ne.0) goto 998
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call getpole(cstid,in_pollon,in_pollat,ierr)
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if (ierr.ne.0) goto 998
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call clscdf(cstid,ierr)
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if (ierr.ne.0) goto 998
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call clscdf(cdfid,ierr)
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c Allocate memory for grid description
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allocate(in_x(in_nx,in_ny),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array in_x ***'
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allocate(in_y(in_nx,in_ny),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array in_y ***'
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c Allocate memory for input and output fields
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allocate(in_field(in_nx,in_ny,in_nz),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array in_field ***'
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allocate(in_anom(in_nx,in_ny,in_nz),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array in_anom ***'
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allocate(in_filt(in_nx,in_ny,in_nz),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array in_filt ***'
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allocate(th_anom(in_nx,in_ny,in_nz),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array th_anom ***'
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allocate(uu_anom(in_nx,in_ny,in_nz),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array uu_anom ***'
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allocate(vv_anom(in_nx,in_ny,in_nz),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array vvnom ***'
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c Allocate memory for filtering
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allocate(tmp(in_nx,in_ny),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array tmp ***'
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c Read variables from file
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call cdfopn(in_zfn,cdfid,ierr)
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if (ierr.ne.0) goto 998
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varname=trim(in_varname)
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print*,'R ',trim(varname),' ',trim(in_zfn)
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call gettimes(cdfid,in_time,in_ntimes,ierr)
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if (ierr.ne.0) goto 998
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call getdat(cdfid,varname,in_time,0,in_field,ierr)
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if (ierr.ne.0) goto 998
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varname='X'
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print*,'R ',trim(varname),' ',trim(in_zfn)
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call gettimes(cdfid,in_time,in_ntimes,ierr)
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if (ierr.ne.0) goto 998
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call getdat(cdfid,varname,in_time,0,in_x,ierr)
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if (ierr.ne.0) goto 998
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varname='Y'
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print*,'R ',trim(varname),' ',trim(in_zfn)
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call gettimes(cdfid,in_time,in_ntimes,ierr)
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if (ierr.ne.0) goto 998
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call getdat(cdfid,varname,in_time,0,in_y,ierr)
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if (ierr.ne.0) goto 998
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call clscdf(cdfid,ierr)
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if (ierr.ne.0) goto 998
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c ------------------------------------------------------------------------
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c Get the average along the x axis: "zonal" average
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c ------------------------------------------------------------------------
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print*,'A ',trim(in_varname)
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do k=1,in_nz
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do j=1,in_ny
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c Get the mean along x axis
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sum=0.
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count=0
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do i=1,in_nx
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if (abs(in_field(i,j,k)-in_mdv).gt.eps) then
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sum=sum+in_field(i,j,k)
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count=count+1
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endif
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enddo
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if (count.ge.1) then
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sum=sum/real(count)
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else
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sum=in_mdv
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endif
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c Get the difference relative to the "zonal" mean
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do i=1,in_nx
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xpt=in_x(i,j)
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ypt=in_y(i,j)
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zpt=in_aklay(k)
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if ( (xpt.ge.f_xmin).and.
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> (xpt.le.f_xmax).and.
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> (ypt.ge.f_ymin).and.
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> (ypt.le.f_ymax).and.
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> (zpt.ge.f_zmin).and.
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> (zpt.le.f_zmax)) then
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in_filt(i,j,k)=sum
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else
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in_filt(i,j,k)=in_field(i,j,k)
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endif
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enddo
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enddo
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enddo
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c ------------------------------------------------------------------------
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c Get the anomaly field
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c ------------------------------------------------------------------------
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c
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c Determine the difference between filtered and unfiltered field
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do i=1,in_nx
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do j=1,in_ny
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do k=1,in_nz
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if ( (abs(in_field(i,j,k)-in_mdv).gt.eps).and.
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> (abs(in_filt (i,j,k)-in_mdv).gt.eps)) then
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in_anom(i,j,k)=in_field(i,j,k)-in_filt(i,j,k)
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else
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in_anom(i,j,k)=in_mdv
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endif
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enddo
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enddo
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enddo
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c Take only the positive part of the difference (mdv is set to 0)
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do i=1,in_nx
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do j=1,in_ny
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do k=1,in_nz
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if ( (abs(in_anom(i,j,k)-in_mdv).lt.eps) ) then
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in_anom(i,j,k)=0.
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else if ( in_anom(i,j,k).lt.0.) then
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in_anom(i,j,k)=0.
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endif
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enddo
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enddo
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enddo
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c Smooth transition to zero at boundaries
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do i=1,in_nx
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do j=1,in_ny
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do k=1,in_nz
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if ( (abs(in_anom (i,j,k)-in_mdv).gt.eps) ) then
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in_anom(i,j,k)=in_anom(i,j,k)*
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> kink(f_zmax -in_aklay(k),boundz )*
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> kink(in_aklay(k)-f_zmin ,boundz )*
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> kink(in_x(i,j) -f_xmin ,boundxy)*
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> kink(f_xmax -in_x(i,j) ,boundxy)*
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> kink(in_y(i,j) -f_ymin ,boundxy)*
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> kink(f_ymax -in_y(i,j) ,boundxy)
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endif
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enddo
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enddo
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enddo
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c ------------------------------------------------------------------------
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c Apply a digital filter to the anomaly field
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c ------------------------------------------------------------------------
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print*,'F ',trim(in_varname)
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do k=1,in_nz
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do i=1,in_nx
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298 |
do j=1,in_ny
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tmp(i,j)=in_anom(i,j,k)
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enddo
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enddo
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do n=1,nfilt
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call filt2d (tmp,tmp,in_nx,in_ny,1.,in_mdv,0,0,0,0)
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enddo
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do i=1,in_nx
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do j=1,in_ny
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in_anom(i,j,k)=tmp(i,j)
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enddo
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enddo
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enddo
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c ------------------------------------------------------------------------
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c Get the modified PV field (original minus anomaly)
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c ------------------------------------------------------------------------
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do i=1,in_nx
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do j=1,in_ny
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do k=1,in_nz
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if ( (abs(in_anom (i,j,k)-in_mdv).gt.eps).and.
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> (abs(in_field(i,j,k)-in_mdv).gt.eps) ) then
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in_filt(i,j,k)=in_field(i,j,k)-in_anom(i,j,k)
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else
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in_filt(i,j,k)=in_mdv
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endif
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enddo
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enddo
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enddo
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c -----------------------------------------------------------------
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c Define the boundary values for wind and potential temperature
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334 |
c -----------------------------------------------------------------
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335 |
|
|
|
336 |
do i=1,in_nx
|
|
|
337 |
do j=1,in_ny
|
|
|
338 |
do k=1,in_nz
|
|
|
339 |
th_anom(i,j,k)=0.
|
|
|
340 |
uu_anom(i,j,k)=0.
|
|
|
341 |
vv_anom(i,j,k)=0.
|
|
|
342 |
enddo
|
|
|
343 |
enddo
|
|
|
344 |
enddo
|
|
|
345 |
|
|
|
346 |
c -----------------------------------------------------------------
|
|
|
347 |
c Write output
|
|
|
348 |
c -----------------------------------------------------------------
|
|
|
349 |
|
|
|
350 |
c Open output netcdf file
|
|
|
351 |
call cdfwopn(in_zfn,cdfid,ierr)
|
|
|
352 |
if (ierr.ne.0) goto 997
|
|
|
353 |
|
|
|
354 |
c Write the 3d filtered field
|
|
|
355 |
isok=0
|
|
|
356 |
varname=trim(in_varname)//'_FILT'
|
|
|
357 |
print*,'Write ',trim(varname),' ',trim(in_zfn)
|
|
|
358 |
call check_varok(isok,varname,in_vnam,in_nvars)
|
|
|
359 |
if (isok.eq.0) then
|
|
|
360 |
call putdef(cdfid,varname,4,in_mdv,in_vardim,
|
|
|
361 |
> in_varmin,in_varmax,in_stag,ierr)
|
|
|
362 |
if (ierr.ne.0) goto 997
|
|
|
363 |
endif
|
|
|
364 |
call putdat(cdfid,varname,in_time,0,in_filt,ierr)
|
|
|
365 |
if (ierr.ne.0) goto 997
|
|
|
366 |
|
|
|
367 |
c Write the 3d anomaly field
|
|
|
368 |
isok=0
|
|
|
369 |
varname=trim(in_varname)//'_ANOM'
|
|
|
370 |
print*,'Write ',trim(varname),' ',trim(in_zfn)
|
|
|
371 |
call check_varok(isok,varname,in_vnam,in_nvars)
|
|
|
372 |
if (isok.eq.0) then
|
|
|
373 |
call putdef(cdfid,varname,4,in_mdv,in_vardim,
|
|
|
374 |
> in_varmin,in_varmax,in_stag,ierr)
|
|
|
375 |
if (ierr.ne.0) goto 997
|
|
|
376 |
endif
|
|
|
377 |
call putdat(cdfid,varname,in_time,0,in_anom,ierr)
|
|
|
378 |
if (ierr.ne.0) goto 997
|
|
|
379 |
|
|
|
380 |
c Write lower and upper boundary
|
|
|
381 |
isok=0
|
|
|
382 |
varname='TH_ANOM'
|
|
|
383 |
print*,'Write ',trim(varname),' ',trim(in_zfn)
|
|
|
384 |
call check_varok(isok,varname,in_vnam,in_nvars)
|
|
|
385 |
if (isok.eq.0) then
|
|
|
386 |
call putdef(cdfid,varname,4,in_mdv,in_vardim,
|
|
|
387 |
> in_varmin,in_varmax,in_stag,ierr)
|
|
|
388 |
if (ierr.ne.0) goto 997
|
|
|
389 |
endif
|
|
|
390 |
call putdat(cdfid,varname,in_time,0,th_anom,ierr)
|
|
|
391 |
if (ierr.ne.0) goto 997
|
|
|
392 |
|
|
|
393 |
c Write lateral boundary
|
|
|
394 |
isok=0
|
|
|
395 |
varname='UU_ANOM'
|
|
|
396 |
print*,'Write ',trim(varname),' ',trim(in_zfn)
|
|
|
397 |
call check_varok(isok,varname,in_vnam,in_nvars)
|
|
|
398 |
if (isok.eq.0) then
|
|
|
399 |
call putdef(cdfid,varname,4,in_mdv,in_vardim,
|
|
|
400 |
> in_varmin,in_varmax,in_stag,ierr)
|
|
|
401 |
if (ierr.ne.0) goto 997
|
|
|
402 |
endif
|
|
|
403 |
call putdat(cdfid,varname,in_time,0,uu_anom,ierr)
|
|
|
404 |
if (ierr.ne.0) goto 997
|
|
|
405 |
isok=0
|
|
|
406 |
varname='VV_ANOM'
|
|
|
407 |
print*,'Write ',trim(varname),' ',trim(in_zfn)
|
|
|
408 |
call check_varok(isok,varname,in_vnam,in_nvars)
|
|
|
409 |
if (isok.eq.0) then
|
|
|
410 |
call putdef(cdfid,varname,4,in_mdv,in_vardim,
|
|
|
411 |
> in_varmin,in_varmax,in_stag,ierr)
|
|
|
412 |
if (ierr.ne.0) goto 997
|
|
|
413 |
endif
|
|
|
414 |
call putdat(cdfid,varname,in_time,0,vv_anom,ierr)
|
|
|
415 |
if (ierr.ne.0) goto 997
|
|
|
416 |
|
|
|
417 |
c Close output netcdf file
|
|
|
418 |
call clscdf(cdfid,ierr)
|
|
|
419 |
if (ierr.ne.0) goto 997
|
|
|
420 |
|
|
|
421 |
|
|
|
422 |
c -----------------------------------------------------------------
|
|
|
423 |
c Exception handling and format specs
|
|
|
424 |
c -----------------------------------------------------------------
|
|
|
425 |
|
|
|
426 |
stop
|
|
|
427 |
|
|
|
428 |
998 print*,'Problems with input netcdf file'
|
|
|
429 |
stop
|
|
|
430 |
|
|
|
431 |
997 print*,'Problems with output netcdf file'
|
|
|
432 |
stop
|
|
|
433 |
|
|
|
434 |
END
|
|
|
435 |
|
|
|
436 |
|
|
|
437 |
c ******************************************************************
|
|
|
438 |
c * 2D FILTERING *
|
|
|
439 |
c ******************************************************************
|
|
|
440 |
|
|
|
441 |
c -----------------------------------------------------------------
|
|
|
442 |
c Horizontal filter
|
|
|
443 |
c -----------------------------------------------------------------
|
|
|
444 |
|
|
|
445 |
subroutine filt2d (a,af,nx,ny,fil,misdat,
|
|
|
446 |
& iperx,ipery,ispol,inpol)
|
|
|
447 |
|
|
|
448 |
c Apply a conservative diffusion operator onto the 2d field a,
|
|
|
449 |
c with full missing data checking.
|
|
|
450 |
c
|
|
|
451 |
c a real inp array to be filtered, dimensioned (nx,ny)
|
|
|
452 |
c af real out filtered array, dimensioned (nx,ny), can be
|
|
|
453 |
c equivalenced with array a in the calling routine
|
|
|
454 |
c f1 real workarray, dimensioned (nx+1,ny)
|
|
|
455 |
c f2 real workarray, dimensioned (nx,ny+1)
|
|
|
456 |
c fil real inp filter-coeff., 0<afil<=1. Maximum filtering with afil=1
|
|
|
457 |
c corresponds to one application of the linear filter.
|
|
|
458 |
c misdat real inp missing-data value, a(i,j)=misdat indicates that
|
|
|
459 |
c the corresponding value is not available. The
|
|
|
460 |
c misdat-checking can be switched off with with misdat=0.
|
|
|
461 |
c iperx int inp periodic boundaries in the x-direction (1=yes,0=no)
|
|
|
462 |
c ipery int inp periodic boundaries in the y-direction (1=yes,0=no)
|
|
|
463 |
c inpol int inp northpole at j=ny (1=yes,0=no)
|
|
|
464 |
c ispol int inp southpole at j=1 (1=yes,0=no)
|
|
|
465 |
c
|
|
|
466 |
c Christoph Schaer, 1993
|
|
|
467 |
|
|
|
468 |
c argument declaration
|
|
|
469 |
integer nx,ny
|
|
|
470 |
real a(nx,ny),af(nx,ny),fil,misdat
|
|
|
471 |
integer iperx,ipery,inpol,ispol
|
|
|
472 |
|
|
|
473 |
c local variable declaration
|
|
|
474 |
integer i,j,is
|
|
|
475 |
real fh
|
|
|
476 |
real f1(nx+1,ny),f2(nx,ny+1)
|
|
|
477 |
|
|
|
478 |
c compute constant fh
|
|
|
479 |
fh=0.125*fil
|
|
|
480 |
|
|
|
481 |
c compute fluxes in x-direction
|
|
|
482 |
if (misdat.eq.0.) then
|
|
|
483 |
do j=1,ny
|
|
|
484 |
do i=2,nx
|
|
|
485 |
f1(i,j)=a(i-1,j)-a(i,j)
|
|
|
486 |
enddo
|
|
|
487 |
enddo
|
|
|
488 |
else
|
|
|
489 |
do j=1,ny
|
|
|
490 |
do i=2,nx
|
|
|
491 |
if ((a(i,j).eq.misdat).or.(a(i-1,j).eq.misdat)) then
|
|
|
492 |
f1(i,j)=0.
|
|
|
493 |
else
|
|
|
494 |
f1(i,j)=a(i-1,j)-a(i,j)
|
|
|
495 |
endif
|
|
|
496 |
enddo
|
|
|
497 |
enddo
|
|
|
498 |
endif
|
|
|
499 |
if (iperx.eq.1) then
|
|
|
500 |
c do periodic boundaries in the x-direction
|
|
|
501 |
do j=1,ny
|
|
|
502 |
f1(1,j)=f1(nx,j)
|
|
|
503 |
f1(nx+1,j)=f1(2,j)
|
|
|
504 |
enddo
|
|
|
505 |
else
|
|
|
506 |
c set boundary-fluxes to zero
|
|
|
507 |
do j=1,ny
|
|
|
508 |
f1(1,j)=0.
|
|
|
509 |
f1(nx+1,j)=0.
|
|
|
510 |
enddo
|
|
|
511 |
endif
|
|
|
512 |
|
|
|
513 |
c compute fluxes in y-direction
|
|
|
514 |
if (misdat.eq.0.) then
|
|
|
515 |
do j=2,ny
|
|
|
516 |
do i=1,nx
|
|
|
517 |
f2(i,j)=a(i,j-1)-a(i,j)
|
|
|
518 |
enddo
|
|
|
519 |
enddo
|
|
|
520 |
else
|
|
|
521 |
do j=2,ny
|
|
|
522 |
do i=1,nx
|
|
|
523 |
if ((a(i,j).eq.misdat).or.(a(i,j-1).eq.misdat)) then
|
|
|
524 |
f2(i,j)=0.
|
|
|
525 |
else
|
|
|
526 |
f2(i,j)=a(i,j-1)-a(i,j)
|
|
|
527 |
endif
|
|
|
528 |
enddo
|
|
|
529 |
enddo
|
|
|
530 |
endif
|
|
|
531 |
c set boundary-fluxes to zero
|
|
|
532 |
do i=1,nx
|
|
|
533 |
f2(i,1)=0.
|
|
|
534 |
f2(i,ny+1)=0.
|
|
|
535 |
enddo
|
|
|
536 |
if (ipery.eq.1) then
|
|
|
537 |
c do periodic boundaries in the x-direction
|
|
|
538 |
do i=1,nx
|
|
|
539 |
f2(i,1)=f2(i,ny)
|
|
|
540 |
f2(i,ny+1)=f2(i,2)
|
|
|
541 |
enddo
|
|
|
542 |
endif
|
|
|
543 |
if (iperx.eq.1) then
|
|
|
544 |
if (ispol.eq.1) then
|
|
|
545 |
c do south-pole
|
|
|
546 |
is=(nx-1)/2
|
|
|
547 |
do i=1,nx
|
|
|
548 |
f2(i,1)=-f2(mod(i-1+is,nx)+1,2)
|
|
|
549 |
enddo
|
|
|
550 |
endif
|
|
|
551 |
if (inpol.eq.1) then
|
|
|
552 |
c do north-pole
|
|
|
553 |
is=(nx-1)/2
|
|
|
554 |
do i=1,nx
|
|
|
555 |
f2(i,ny+1)=-f2(mod(i-1+is,nx)+1,ny)
|
|
|
556 |
enddo
|
|
|
557 |
endif
|
|
|
558 |
endif
|
|
|
559 |
|
|
|
560 |
c compute flux-convergence -> filter
|
|
|
561 |
if (misdat.eq.0.) then
|
|
|
562 |
do j=1,ny
|
|
|
563 |
do i=1,nx
|
|
|
564 |
af(i,j)=a(i,j)+fh*(f1(i,j)-f1(i+1,j)+f2(i,j)-f2(i,j+1))
|
|
|
565 |
enddo
|
|
|
566 |
enddo
|
|
|
567 |
else
|
|
|
568 |
do j=1,ny
|
|
|
569 |
do i=1,nx
|
|
|
570 |
if (a(i,j).eq.misdat) then
|
|
|
571 |
af(i,j)=misdat
|
|
|
572 |
else
|
|
|
573 |
af(i,j)=a(i,j)+fh*(f1(i,j)-f1(i+1,j)+f2(i,j)-f2(i,j+1))
|
|
|
574 |
endif
|
|
|
575 |
enddo
|
|
|
576 |
enddo
|
|
|
577 |
endif
|
|
|
578 |
|
|
|
579 |
end
|
|
|
580 |
|
|
|
581 |
|
|
|
582 |
c ******************************************************************
|
|
|
583 |
c * AUXILIARY SUBROUTINES *
|
|
|
584 |
c ******************************************************************
|
|
|
585 |
|
|
|
586 |
C -----------------------------------------------------------------
|
|
|
587 |
c Rene's KINK function (for smoothing at bounadries)
|
|
|
588 |
C -----------------------------------------------------------------
|
|
|
589 |
|
|
|
590 |
real function kink (x,a)
|
|
|
591 |
|
|
|
592 |
implicit none
|
|
|
593 |
|
|
|
594 |
c declaration of parameters
|
|
|
595 |
real x,a
|
|
|
596 |
|
|
|
597 |
c parameters
|
|
|
598 |
real pi
|
|
|
599 |
parameter (pi=3.1415926535)
|
|
|
600 |
|
|
|
601 |
if (x.lt.0.) then
|
|
|
602 |
kink=0.
|
|
|
603 |
elseif (x.gt.a) then
|
|
|
604 |
kink=1.
|
|
|
605 |
else
|
|
|
606 |
kink=(1.+cos(pi*(x-a)/a))/2.
|
|
|
607 |
endif
|
|
|
608 |
|
|
|
609 |
return
|
|
|
610 |
end
|
|
|
611 |
|
|
|
612 |
|
|
|
613 |
c ---------------------------------------------------------
|
|
|
614 |
c Subroutines to write the netcdf output file
|
|
|
615 |
c ---------------------------------------------------------
|
|
|
616 |
|
|
|
617 |
subroutine writecdf2D(cdfname,
|
|
|
618 |
> varname,arr,time,
|
|
|
619 |
> dx,dy,xmin,ymin,nx,ny,
|
|
|
620 |
> crefile,crevar)
|
|
|
621 |
|
|
|
622 |
c Create and write to the netcdf file <cdfname>. The variable
|
|
|
623 |
c with name <varname> and with time <time> is written. The data
|
|
|
624 |
c are in the two-dimensional array <arr>. The list <dx,dy,xmin,
|
|
|
625 |
c ymin,nx,ny> specifies the output grid. The flags <crefile> and
|
|
|
626 |
c <crevar> determine whether the file and/or the variable should
|
|
|
627 |
c be created. 1: create / 0: not created
|
|
|
628 |
|
|
|
629 |
IMPLICIT NONE
|
|
|
630 |
|
|
|
631 |
c Declaration of input parameters
|
|
|
632 |
character*80 cdfname,varname
|
|
|
633 |
integer nx,ny
|
|
|
634 |
real arr(nx,ny)
|
|
|
635 |
real dx,dy,xmin,ymin
|
|
|
636 |
real time
|
|
|
637 |
integer crefile,crevar
|
|
|
638 |
|
|
|
639 |
c Further variables
|
|
|
640 |
real varmin(4),varmax(4),stag(4)
|
|
|
641 |
integer ierr,cdfid,ndim,vardim(4)
|
|
|
642 |
character*80 cstname
|
|
|
643 |
real mdv
|
|
|
644 |
integer datar(14),stdate(5)
|
|
|
645 |
integer i
|
|
|
646 |
|
|
|
647 |
C Definitions
|
|
|
648 |
varmin(1)=xmin
|
|
|
649 |
varmin(2)=ymin
|
|
|
650 |
varmin(3)=1050.
|
|
|
651 |
varmax(1)=xmin+real(nx-1)*dx
|
|
|
652 |
varmax(2)=ymin+real(ny-1)*dy
|
|
|
653 |
varmax(3)=1050.
|
|
|
654 |
cstname=trim(cdfname)//'_cst'
|
|
|
655 |
ndim=4
|
|
|
656 |
vardim(1)=nx
|
|
|
657 |
vardim(2)=ny
|
|
|
658 |
vardim(3)=1
|
|
|
659 |
stag(1)=0.
|
|
|
660 |
stag(2)=0.
|
|
|
661 |
stag(3)=0.
|
|
|
662 |
mdv=-999.98999
|
|
|
663 |
|
|
|
664 |
C Create the file
|
|
|
665 |
if (crefile.eq.0) then
|
|
|
666 |
call cdfwopn(cdfname,cdfid,ierr)
|
|
|
667 |
if (ierr.ne.0) goto 906
|
|
|
668 |
else if (crefile.eq.1) then
|
|
|
669 |
call crecdf(cdfname,cdfid,
|
|
|
670 |
> varmin,varmax,ndim,cstname,ierr)
|
|
|
671 |
if (ierr.ne.0) goto 903
|
|
|
672 |
|
|
|
673 |
C Write the constants file
|
|
|
674 |
datar(1)=vardim(1)
|
|
|
675 |
datar(2)=vardim(2)
|
|
|
676 |
datar(3)=int(1000.*varmax(2))
|
|
|
677 |
datar(4)=int(1000.*varmin(1))
|
|
|
678 |
datar(5)=int(1000.*varmin(2))
|
|
|
679 |
datar(6)=int(1000.*varmax(1))
|
|
|
680 |
datar(7)=int(1000.*dx)
|
|
|
681 |
datar(8)=int(1000.*dy)
|
|
|
682 |
datar(9)=1
|
|
|
683 |
datar(10)=1
|
|
|
684 |
datar(11)=0 ! data version
|
|
|
685 |
datar(12)=0 ! cstfile version
|
|
|
686 |
datar(13)=0 ! longitude of pole
|
|
|
687 |
datar(14)=90000 ! latitude of pole
|
|
|
688 |
do i=1,5
|
|
|
689 |
stdate(i)=0
|
|
|
690 |
enddo
|
|
|
691 |
call wricst(cstname,datar,0.,0.,0.,0.,stdate)
|
|
|
692 |
endif
|
|
|
693 |
|
|
|
694 |
c Write the data to the netcdf file, and close the file
|
|
|
695 |
if (crevar.eq.1) then
|
|
|
696 |
call putdef(cdfid,varname,ndim,mdv,
|
|
|
697 |
> vardim,varmin,varmax,stag,ierr)
|
|
|
698 |
if (ierr.ne.0) goto 904
|
|
|
699 |
endif
|
|
|
700 |
call putdat(cdfid,varname,time,0,arr,ierr)
|
|
|
701 |
if (ierr.ne.0) goto 905
|
|
|
702 |
call clscdf(cdfid,ierr)
|
|
|
703 |
|
|
|
704 |
return
|
|
|
705 |
|
|
|
706 |
c Error handling
|
|
|
707 |
903 print*,'*** Problem to create netcdf file ***'
|
|
|
708 |
stop
|
|
|
709 |
904 print*,'*** Problem to write definition ***'
|
|
|
710 |
stop
|
|
|
711 |
905 print*,'*** Problem to write data ***'
|
|
|
712 |
stop
|
|
|
713 |
906 print*,'*** Problem to open netcdf file ***'
|
|
|
714 |
stop
|
|
|
715 |
|
|
|
716 |
END
|
|
|
717 |
|
|
|
718 |
|
|
|
719 |
c ------------------------------------------------------------------
|
|
|
720 |
c Auxiliary routines
|
|
|
721 |
c ------------------------------------------------------------------
|
|
|
722 |
|
|
|
723 |
subroutine check_varok (isok,varname,varlist,nvars)
|
|
|
724 |
|
|
|
725 |
c Check whether the variable <varname> is in the list <varlist(nvars)>.
|
|
|
726 |
c If this is the case, <isok> is incremented by 1. Otherwise <isok> keeps
|
|
|
727 |
c its value.
|
|
|
728 |
|
|
|
729 |
implicit none
|
|
|
730 |
|
|
|
731 |
c Declaraion of subroutine parameters
|
|
|
732 |
integer isok
|
|
|
733 |
integer nvars
|
|
|
734 |
character*80 varname
|
|
|
735 |
character*80 varlist(nvars)
|
|
|
736 |
|
|
|
737 |
c Auxiliary variables
|
|
|
738 |
integer i
|
|
|
739 |
|
|
|
740 |
c Main
|
|
|
741 |
do i=1,nvars
|
|
|
742 |
if (trim(varname).eq.trim(varlist(i))) isok=isok+1
|
|
|
743 |
enddo
|
|
|
744 |
|
|
|
745 |
end
|