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michaesp |
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PROGRAM wrfmap
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c **********************************************************************
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c * Transform between lon/lat and x/y coordinates *
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c * Michael Sprenger / Spring 2013 *
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c **********************************************************************
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implicit none
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c ------------------------------------------------------------
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c Declaration of parameters and variables
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c ------------------------------------------------------------
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c Input parameters
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character*80 mode
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character*80 inpfile
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character*80 outfile
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integer ntra,ntim,ncol
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character*80 anglemode
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c Fixed parameters
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character*80 mapfile ! netCDF file with map transformation
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parameter (mapfile ='wrfmap.nc')
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real mdv ! missing data value
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parameter (mdv=-999.)
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michaesp |
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real eps ! Numerical epsilon
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parameter (eps= 0.001)
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michaesp |
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c Numerical grid
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real xmin,xmax,ymin,ymax ! Domain size
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real dx,dy ! Horizontal resolution
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integer nx,ny,nz ! Grid dimensions
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real,allocatable,dimension (:,:) :: lon,lat ! lon/lat on numerical grid
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real,allocatable,dimension (:,:) :: mpx,mpy ! map scale factors in x/y direction
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c Geographical grid
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real latmin,latmax,lonmin,lonmax ! Geographical domain
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real dlon,dlat ! Minimum spacing in geographical space
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integer nlon,nlat,nlev ! Geographical grid dimension
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real,allocatable,dimension (:,:) :: x,y ! x/y on geographical grid
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c Vertical grid
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real,allocatable,dimension (:,:,:) :: p3 ! 3D pressure
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real,allocatable,dimension (:,:) :: ps ! surface pressure
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real,allocatable,dimension (:,:,:) :: z3 ! 3D geopotential height
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real,allocatable,dimension (:,:) :: zb ! surface geopotential height
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c Transformation between numerical and geographical grid
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michaesp |
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integer,allocatable,dimension (:,:) :: connect1
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michaesp |
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integer connectval1
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michaesp |
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integer,allocatable,dimension (:,:) :: connect2
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michaesp |
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integer connectval2
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real,allocatable,dimension (:,:) :: xc,yc
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real radius
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real xval,yval
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c Trajectories
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real,allocatable, dimension (:,:,:) :: tra ! Input start coordinates (ntra,ntim,ncol)
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integer refdate(6) ! Reference date
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character*80 vars(200) ! Field names
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real,allocatable, dimension (:) :: xx0,yy0,zz0 ! Position of air parcels
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integer inpmode
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integer outmode
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integer npoints
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c Auxiliary variables
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integer fid
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integer stat
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character*80 varname,cdfname
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integer i,j
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character*80 radunit
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real rdummy
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real rid,rjd,rkd
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real xpos,ypos,zpos,ppos,lonpos,latpos
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real lon1,lat1,lon2,lat2
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michaesp |
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integer nfilter
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michaesp |
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c Externals
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real int_index3
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external int_index3
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real sdis
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external sdis
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c ------------------------------------------------------------
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c Preparations
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c ------------------------------------------------------------
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c Read parameters
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open(10,file='wrfmap.param')
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read(10,*) mode
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if ( mode.eq.'-create' ) then ! create mapping file
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read(10,*) inpfile
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read(10,*) anglemode
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endif
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if ( mode.eq.'-ll2xy' ) then ! convert lon/lat -> x/y
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read(10,*) inpfile
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read(10,*) outfile
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read(10,*) ntra,ntim,ncol
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endif
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if ( mode.eq.'-ll2xy.single' ) then ! convert single lon/lat -> x/y
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read(10,*) lonpos,latpos
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endif
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if ( mode.eq.'-xy2ll' ) then ! convert x/y -> lon/lat
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read(10,*) inpfile
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read(10,*) outfile
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read(10,*) ntra,ntim,ncol
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endif
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if ( mode.eq.'-xy2ll.single' ) then ! convert single x/y -> lon/lat
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read(10,*) xpos,ypos
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endif
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if ( mode.eq.'-p2z' ) then ! convert x/y/p -> x/y/z
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read(10,*) inpfile
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read(10,*) outfile
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read(10,*) ntra,ntim,ncol
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endif
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if ( mode.eq.'-p2z.single' ) then ! convert single x/y/p -> x/y/z
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read(10,*) xpos,ypos,ppos
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endif
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if ( mode.eq.'-z2p' ) then ! convert x/y/z -> x/y/p
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read(10,*) inpfile
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read(10,*) outfile
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read(10,*) ntra,ntim,ncol
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endif
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if ( mode.eq.'-z2p.single' ) then ! convert single x/y/z -> x/y/p
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read(10,*) xpos,ypos,zpos
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endif
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michaesp |
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if ( mode.eq.'-mapscale' ) then ! calculate mapping scale factors
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read(10,*) nfilter
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endif
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michaesp |
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close(10)
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c Read the mapping file - except for mode '-create'
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if ( mode.ne.'-create' ) then
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c Get dimensions
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cdfname = mapfile
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varname = 'Z'
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nx = 1
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ny = 1
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nz = 1
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call readcdf2D(cdfname,varname,rdummy,0.,
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> dx,dy,xmin,ymin,nx,ny,nz)
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cdfname = mapfile
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varname = 'X'
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nlon = 1
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nlat = 1
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nlev = 1
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call readcdf2D(cdfname,varname,rdummy,0.,
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> dlon,dlat,lonmin,latmin,nlon,nlat,nlev)
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c Allocate memory
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allocate(lon(nx,ny),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array lon ***'
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allocate(lat(nx,ny),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array lat ***'
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allocate(x(nlon,nlat),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array x ***'
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allocate(y(nlon,nlat),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array y ***'
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allocate(p3(nx,ny,nz),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array p3 ***'
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allocate(z3(nx,ny,nz),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array z3 ***'
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allocate(zb(nx,ny),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array zb ***'
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allocate(ps(nx,ny),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array ps ***'
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c Read data
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cdfname = mapfile
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varname = 'LON'
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call readcdf2D(cdfname,varname,lon,0.,
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> dx,dy,xmin,ymin,nx,ny,1)
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cdfname = mapfile
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varname = 'LAT'
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call readcdf2D(cdfname,varname,lat,0.,
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> dx,dy,xmin,ymin,nx,ny,1)
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cdfname = mapfile
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varname = 'X'
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call readcdf2D(cdfname,varname,x,0.,
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> dlon,dlat,lonmin,latmin,nlon,nlat,1)
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cdfname = mapfile
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varname = 'Y'
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call readcdf2D(cdfname,varname,y,0.,
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> dlon,dlat,lonmin,latmin,nlon,nlat,1)
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cdfname = mapfile
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varname = 'Z'
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call readcdf2D(cdfname,varname,z3,0.,
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> dx,dy,xmin,ymin,nx,ny,nz)
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cdfname = mapfile
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varname = 'P'
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call readcdf2D(cdfname,varname,p3,0.,
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> dx,dy,xmin,ymin,nx,ny,nz)
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cdfname = mapfile
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varname = 'TOPO'
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call readcdf2D(cdfname,varname,zb,0.,
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> dx,dy,xmin,ymin,nx,ny,1)
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c Set surface prtessure to lowest 3d pressure level
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do i=1,nx
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do j=1,ny
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ps(i,j) = p3(i,j,1)
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enddo
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enddo
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endif
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c ------------------------------------------------------------
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c Create mapping file
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c ------------------------------------------------------------
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if ( mode.eq.'-create' ) then
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c Open mapping file
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call input_open(fid,inpfile)
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c Get grid description
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call input_grid_wrf(fid,
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> xmin,xmax,ymin,ymax,dx,dy,nx,ny,nz)
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c Write grid information to screen
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print*,' xmin,xmax = ',xmin,xmax
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print*,' ymin,ymax = ',ymin,ymax
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print*,' dx,dy = ',dx,dy
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print*,' nx,ny,nz = ',nx,ny,nz
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michaesp |
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print*,' anglemode = ',trim(anglemode)
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michaesp |
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c Transform grid specifier into grid coordinates
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xmin = 1.
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ymin = 1.
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dx = 1.
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dy = 1.
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c Allocate memory for lon/lat on numerical grid
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allocate(lon(nx,ny),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array lon ***'
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allocate(lat(nx,ny),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array lat ***'
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allocate(p3(nx,ny,nz),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array p3 ***'
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allocate(z3(nx,ny,nz),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array z3 ***'
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allocate(zb(nx,ny),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array zb ***'
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c Read lon/lat on the model grid
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varname='XLONG'
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call input_var_wrf(fid,varname,lon,nx,ny,1)
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varname='XLAT'
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call input_var_wrf(fid,varname,lat,nx,ny,1)
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varname='pressure'
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call input_var_wrf(fid,varname,p3 ,nx,ny,nz)
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varname='geopot'
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call input_var_wrf(fid,varname,z3 ,nx,ny,nz)
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varname='geopots'
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call input_var_wrf(fid,varname,zb ,nx,ny,1)
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c Transform longitude depending on <anglemode>
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if ( anglemode.eq.'greenwich' ) then
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do i=1,nx
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do j=1,ny
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if ( lon(i,j).lt.0. ) lon(i,j) = lon(i,j) + 360.
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enddo
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enddo
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elseif ( anglemode.eq.'dateline' ) then
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do i=1,nx
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do j=1,ny
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if ( lon(i,j).gt.180. ) lon(i,j) = lon(i,j) - 360.
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enddo
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enddo
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else
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print*,' ERROR: unsupported angle mode... Stop'
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stop
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endif
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c Close input file file
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call input_close(fid)
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c Check for 'date line' and for pole
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do i=2,nx
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do j=1,ny
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if ( abs( lat(i,j) ).gt.90. ) then
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print*,' ERROR: mapping over pole not supported... Stop'
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stop
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endif
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if ( abs( lon(i,j)-lon(i-1,j) ).gt.180. ) then
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print*,' ERROR: mapping over date line not supported... Stop'
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stop
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endif
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enddo
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enddo
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c Determine the extreme coordinates
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latmin = lat(1,1)
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latmax = lat(1,1)
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lonmin = lon(1,1)
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lonmax = lon(1,1)
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do i=1,nx
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do j=1,ny
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if ( lat(i,j).lt.latmin ) latmin = lat(i,j)
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if ( lat(i,j).gt.latmax ) latmax = lat(i,j)
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if ( lon(i,j).lt.lonmin ) lonmin = lon(i,j)
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if ( lon(i,j).gt.lonmax ) lonmax = lon(i,j)
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enddo
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enddo
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print*,' lonmin,max = ',lonmin,lonmax
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print*,' latmin,max = ',latmin,latmax
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c Determine the extreme dlon/dlat spacing
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dlon = abs( lon(2,1)-lon(1,1) )
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do i=2,nx
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do j=1,ny
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if ( abs( lon(i,j)-lon(i-1,j) ).lt.dlon ) then
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dlon = abs( lon(i,j)-lon(i-1,j) )
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endif
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enddo
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enddo
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dlat = abs( lat(1,2)-lat(1,1) )
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do i=1,nx
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do j=2,ny
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if ( abs( lat(i,j)-lat(i,j-1) ).lt.dlat ) then
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dlat = abs( lat(i,j)-lat(i,j-1) )
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endif
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enddo
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enddo
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c Set dimension of geographical grid
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nlon = ceiling( (lonmax-lonmin) / dlon + 1. )
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nlat = ceiling( (latmax-latmin) / dlat + 1. )
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lonmax = lonmin + real(nlon-1) * dlon
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|
346 |
latmax = latmin + real(nlat-1) * dlat
|
|
|
347 |
|
|
|
348 |
print*,' dlon,dlat = ',dlon,dlat
|
|
|
349 |
print*,' nlon,nlat = ',nlon,nlat
|
|
|
350 |
|
|
|
351 |
c Allocate memory for x/y on geographical grid
|
|
|
352 |
allocate(x(nlon,nlat),stat=stat)
|
|
|
353 |
if (stat.ne.0) print*,'*** error allocating array x ***'
|
|
|
354 |
allocate(y(nlon,nlat),stat=stat)
|
|
|
355 |
if (stat.ne.0) print*,'*** error allocating array y ***'
|
|
|
356 |
allocate(connect1(nlon,nlat),stat=stat)
|
|
|
357 |
if (stat.ne.0) print*,'*** error allocating array connect1***'
|
|
|
358 |
allocate(connect2(nlon,nlat),stat=stat)
|
|
|
359 |
if (stat.ne.0) print*,'*** error allocating array connect2***'
|
|
|
360 |
allocate(xc(nlon,nlat),stat=stat)
|
|
|
361 |
if (stat.ne.0) print*,'*** error allocating array xc ***'
|
|
|
362 |
allocate(yc(nlon,nlat),stat=stat)
|
|
|
363 |
if (stat.ne.0) print*,'*** error allocating array yc ***'
|
|
|
364 |
|
|
|
365 |
c Init the mapping arrays
|
|
|
366 |
connectval1 = 0
|
|
|
367 |
connectval2 = 0
|
|
|
368 |
do i=1,nlon
|
|
|
369 |
do j=1,nlat
|
|
|
370 |
x(i,j) = 0.
|
|
|
371 |
y(i,j) = 0.
|
|
|
372 |
xc(i,j) = 0.
|
|
|
373 |
yc(i,j) = 0.
|
|
|
374 |
connect1(i,j) = 1
|
|
|
375 |
connect2(i,j) = 1
|
|
|
376 |
enddo
|
|
|
377 |
enddo
|
|
|
378 |
|
|
|
379 |
c Get the good radius for gridding - avoiding gaps
|
|
|
380 |
radunit = 'deg'
|
|
|
381 |
radius = 0.
|
|
|
382 |
do i=2,nx
|
|
|
383 |
do j=2,ny
|
|
|
384 |
if ( abs( lat(i,j)-lat(i,j-1) ).gt.radius ) then
|
|
|
385 |
radius = abs( lat(i,j)-lat(i,j-1) )
|
|
|
386 |
endif
|
|
|
387 |
if ( abs( lon(i,j)-lon(i-1,j) ).gt.radius ) then
|
|
|
388 |
radius = abs( lon(i,j)-lon(i-1,j) )
|
|
|
389 |
endif
|
|
|
390 |
enddo
|
|
|
391 |
enddo
|
|
|
392 |
radius = 3. * radius
|
|
|
393 |
|
|
|
394 |
c Do the mapping
|
|
|
395 |
do i=1,nx
|
|
|
396 |
do j=1,ny
|
|
|
397 |
|
|
|
398 |
connectval1 = connectval1 + 1
|
|
|
399 |
call gridding1(lat(i,j),lon(i,j),real(i),radius,radunit,
|
|
|
400 |
> connect1,connectval1,
|
|
|
401 |
> x,xc,nlon,nlat,lonmin,latmin,dlon,dlat)
|
|
|
402 |
|
|
|
403 |
connectval2 = connectval2 + 1
|
|
|
404 |
call gridding1(lat(i,j),lon(i,j),real(j),radius,radunit,
|
|
|
405 |
> connect2,connectval2,
|
|
|
406 |
> y,yc,nlon,nlat,lonmin,latmin,dlon,dlat)
|
|
|
407 |
|
|
|
408 |
|
|
|
409 |
enddo
|
|
|
410 |
enddo
|
|
|
411 |
|
|
|
412 |
c Normalize output and set miising data flag
|
|
|
413 |
do i=1,nlon
|
|
|
414 |
do j=1,nlat
|
|
|
415 |
if ( xc(i,j).gt.0. ) then
|
|
|
416 |
x(i,j) = x(i,j)/xc(i,j)
|
|
|
417 |
else
|
|
|
418 |
x(i,j) = mdv
|
|
|
419 |
endif
|
|
|
420 |
if ( yc(i,j).gt.0. ) then
|
|
|
421 |
y(i,j) = y(i,j)/yc(i,j)
|
|
|
422 |
else
|
|
|
423 |
y(i,j) = mdv
|
|
|
424 |
endif
|
|
|
425 |
enddo
|
|
|
426 |
enddo
|
|
|
427 |
|
|
|
428 |
c Write data to netCDF
|
|
|
429 |
cdfname = mapfile
|
|
|
430 |
varname = 'X'
|
|
|
431 |
call writecdf2D(cdfname,varname,x,0.,
|
|
|
432 |
> dlon,dlat,lonmin,latmin,nlon,nlat,1,1,1)
|
|
|
433 |
|
|
|
434 |
cdfname = mapfile
|
|
|
435 |
varname = 'Y'
|
|
|
436 |
call writecdf2D(cdfname,varname,y,0.,
|
|
|
437 |
> dlon,dlat,lonmin,latmin,nlon,nlat,1,0,1)
|
|
|
438 |
|
|
|
439 |
cdfname = mapfile
|
|
|
440 |
varname = 'LON'
|
|
|
441 |
call writecdf2D(cdfname,varname,lon,0.,
|
|
|
442 |
> dx,dy,xmin,ymin,nx,ny,1,0,1)
|
|
|
443 |
|
|
|
444 |
cdfname = mapfile
|
|
|
445 |
varname = 'LAT'
|
|
|
446 |
call writecdf2D(cdfname,varname,lat,0.,
|
|
|
447 |
> dx,dy,xmin,ymin,nx,ny,1,0,1)
|
|
|
448 |
|
|
|
449 |
cdfname = mapfile
|
|
|
450 |
varname = 'Z'
|
|
|
451 |
call writecdf2D(cdfname,varname,z3,0.,
|
|
|
452 |
> dx,dy,xmin,ymin,nx,ny,nz,0,1)
|
|
|
453 |
|
|
|
454 |
cdfname = mapfile
|
|
|
455 |
varname = 'P'
|
|
|
456 |
call writecdf2D(cdfname,varname,p3,0.,
|
|
|
457 |
> dx,dy,xmin,ymin,nx,ny,nz,0,1)
|
|
|
458 |
cdfname = mapfile
|
|
|
459 |
varname = 'TOPO'
|
|
|
460 |
call writecdf2D(cdfname,varname,zb,0.,
|
|
|
461 |
> dx,dy,xmin,ymin,nx,ny,1,0,1)
|
|
|
462 |
|
|
|
463 |
|
|
|
464 |
endif
|
|
|
465 |
|
|
|
466 |
|
|
|
467 |
c ------------------------------------------------------------
|
|
|
468 |
c Convert a lat/lon/z list to a x/y/z list
|
|
|
469 |
c ------------------------------------------------------------
|
|
|
470 |
|
|
|
471 |
if ( mode.eq.'-ll2xy' ) then
|
|
|
472 |
|
|
|
473 |
c Allocate memory for input and output lists
|
|
|
474 |
allocate(tra(ntra,ntim,ncol),stat=stat)
|
|
|
475 |
if (stat.ne.0) print*,'*** error allocating array tra ***'
|
|
|
476 |
allocate(xx0(ntra*ntim),stat=stat)
|
|
|
477 |
if (stat.ne.0) print*,'*** error allocating array xx0 ***'
|
|
|
478 |
allocate(yy0(ntra*ntim),stat=stat)
|
|
|
479 |
if (stat.ne.0) print*,'*** error allocating array yy0 ***'
|
|
|
480 |
allocate(zz0(ntra*ntim),stat=stat)
|
|
|
481 |
if (stat.ne.0) print*,'*** error allocating array zz0 ***'
|
|
|
482 |
|
|
|
483 |
c Get format of input and output file
|
|
|
484 |
call mode_tra(inpmode,inpfile)
|
|
|
485 |
call mode_tra(outmode,outfile)
|
| 11 |
michaesp |
486 |
if ( outmode.eq.-1 ) outmode = inpmode
|
| 2 |
michaesp |
487 |
|
|
|
488 |
c Read coordinates from file - Format (lon,lat,lev)
|
|
|
489 |
if (inpmode.eq.-1) then
|
|
|
490 |
fid = 10
|
|
|
491 |
npoints = 0
|
|
|
492 |
open(fid,file=inpfile)
|
|
|
493 |
do i=1,ntra
|
|
|
494 |
npoints = npoints + 1
|
|
|
495 |
read(fid,*) xx0(npoints),yy0(npoints),zz0(npoints)
|
|
|
496 |
enddo
|
|
|
497 |
close(fid)
|
|
|
498 |
|
|
|
499 |
c Read coordinates from trajectory file
|
|
|
500 |
else
|
|
|
501 |
call ropen_tra(fid,inpfile,ntra,ntim,ncol,refdate,vars,inpmode)
|
|
|
502 |
call read_tra (fid,tra,ntra,ntim,ncol,inpmode)
|
|
|
503 |
call close_tra(fid,inpmode)
|
|
|
504 |
|
|
|
505 |
if ( (vars(2).ne.'lon').and.(vars(3).ne.'lat') ) then
|
|
|
506 |
print*,' ERROR: input must be in lon/lat format... Stop'
|
|
|
507 |
stop
|
|
|
508 |
endif
|
|
|
509 |
|
|
|
510 |
npoints = 0
|
|
|
511 |
do i=1,ntra
|
|
|
512 |
do j=1,ntim
|
|
|
513 |
npoints = npoints + 1
|
|
|
514 |
xx0(npoints) = tra(i,j,2)
|
|
|
515 |
yy0(npoints) = tra(i,j,3)
|
|
|
516 |
zz0(npoints) = tra(i,j,4)
|
|
|
517 |
enddo
|
|
|
518 |
enddo
|
|
|
519 |
endif
|
|
|
520 |
|
|
|
521 |
c Transform coordinates
|
|
|
522 |
do i=1,npoints
|
|
|
523 |
|
| 20 |
michaesp |
524 |
if ( ( abs(xx0(i)-mdv).gt.eps ).and.
|
|
|
525 |
> ( abs(yy0(i)-mdv).gt.eps ) )
|
|
|
526 |
> then
|
|
|
527 |
rid=(xx0(i)-lonmin)/dlon+1.
|
|
|
528 |
rjd=(yy0(i)-latmin)/dlat+1.
|
|
|
529 |
xx0(i) = int_index3(x,nlon,nlat,1,rid,rjd,1.,mdv)
|
|
|
530 |
yy0(i) = int_index3(y,nlon,nlat,1,rid,rjd,1.,mdv)
|
|
|
531 |
else
|
|
|
532 |
xx0(i) = mdv
|
|
|
533 |
yy0(i) = mdv
|
|
|
534 |
endif
|
| 2 |
michaesp |
535 |
|
|
|
536 |
enddo
|
|
|
537 |
|
|
|
538 |
c Write output to list
|
|
|
539 |
if ( outmode.eq.-1 ) then
|
|
|
540 |
fid = 10
|
|
|
541 |
open(fid,file=outfile)
|
|
|
542 |
do i=1,ntra
|
|
|
543 |
write(fid,'(f9.2,f8.2,i6)') xx0(i),yy0(i),nint(zz0(i))
|
|
|
544 |
enddo
|
|
|
545 |
close(fid)
|
|
|
546 |
|
|
|
547 |
c Write output to trajectory
|
|
|
548 |
else
|
|
|
549 |
npoints = 0
|
|
|
550 |
do i=1,ntra
|
|
|
551 |
do j=1,ntim
|
|
|
552 |
npoints = npoints + 1
|
|
|
553 |
tra(i,j,2) = xx0(npoints)
|
|
|
554 |
tra(i,j,3) = yy0(npoints)
|
|
|
555 |
tra(i,j,4) = zz0(npoints)
|
|
|
556 |
enddo
|
|
|
557 |
enddo
|
|
|
558 |
if ( ncol.eq.3 ) ncol = 4
|
|
|
559 |
vars(1) = 'time'
|
|
|
560 |
vars(2) = 'x'
|
|
|
561 |
vars(3) = 'y'
|
|
|
562 |
vars(4) = 'z'
|
|
|
563 |
call wopen_tra(fid,outfile,ntra,ntim,ncol,refdate,vars,outmode)
|
|
|
564 |
call write_tra(fid,tra,ntra,ntim,ncol,outmode)
|
|
|
565 |
call close_tra(fid,outmode)
|
|
|
566 |
endif
|
|
|
567 |
|
|
|
568 |
endif
|
|
|
569 |
|
|
|
570 |
c ------------------------------------------------------------
|
|
|
571 |
c Convert a x/y/z list to a lon/lat/z list
|
|
|
572 |
c ------------------------------------------------------------
|
|
|
573 |
|
|
|
574 |
if ( mode.eq.'-xy2ll' ) then
|
|
|
575 |
|
|
|
576 |
c Allocate memory for input and output lists
|
|
|
577 |
allocate(tra(ntra,ntim,ncol),stat=stat)
|
|
|
578 |
if (stat.ne.0) print*,'*** error allocating array tra ***'
|
|
|
579 |
allocate(xx0(ntra*ntim),stat=stat)
|
|
|
580 |
if (stat.ne.0) print*,'*** error allocating array xx0 ***'
|
|
|
581 |
allocate(yy0(ntra*ntim),stat=stat)
|
|
|
582 |
if (stat.ne.0) print*,'*** error allocating array yy0 ***'
|
|
|
583 |
allocate(zz0(ntra*ntim),stat=stat)
|
|
|
584 |
if (stat.ne.0) print*,'*** error allocating array zz0 ***'
|
|
|
585 |
|
|
|
586 |
c Get format of input and output file
|
|
|
587 |
call mode_tra(inpmode,inpfile)
|
|
|
588 |
call mode_tra(outmode,outfile)
|
| 11 |
michaesp |
589 |
if ( outmode.eq.-1) outmode=inpmode
|
| 2 |
michaesp |
590 |
|
|
|
591 |
c Read coordinates from file - Format (x,y,lev)
|
|
|
592 |
if (inpmode.eq.-1) then
|
|
|
593 |
fid = 10
|
|
|
594 |
npoints = 0
|
|
|
595 |
open(fid,file=inpfile)
|
|
|
596 |
do i=1,ntra
|
|
|
597 |
npoints = npoints + 1
|
|
|
598 |
read(fid,*) xx0(npoints),yy0(npoints),zz0(npoints)
|
|
|
599 |
enddo
|
|
|
600 |
close(fid)
|
|
|
601 |
|
|
|
602 |
c Read coordinates from trajectory file
|
|
|
603 |
else
|
|
|
604 |
call ropen_tra(fid,inpfile,ntra,ntim,ncol,refdate,vars,inpmode)
|
|
|
605 |
call read_tra (fid,tra,ntra,ntim,ncol,inpmode)
|
|
|
606 |
call close_tra(fid,inpmode)
|
|
|
607 |
|
|
|
608 |
if ( (vars(2).ne.'x').and.(vars(3).ne.'y') ) then
|
|
|
609 |
print*,' ERROR: input must be in x/y format... Stop'
|
|
|
610 |
stop
|
|
|
611 |
endif
|
|
|
612 |
|
|
|
613 |
npoints = 0
|
|
|
614 |
do i=1,ntra
|
|
|
615 |
do j=1,ntim
|
|
|
616 |
npoints = npoints + 1
|
|
|
617 |
xx0(npoints) = tra(i,j,2)
|
|
|
618 |
yy0(npoints) = tra(i,j,3)
|
|
|
619 |
zz0(npoints) = tra(i,j,4)
|
|
|
620 |
enddo
|
|
|
621 |
enddo
|
|
|
622 |
endif
|
|
|
623 |
|
|
|
624 |
c Transform coordinates
|
|
|
625 |
do i=1,npoints
|
|
|
626 |
|
| 20 |
michaesp |
627 |
if ( ( abs(xx0(i)-mdv).gt.eps ).and.
|
|
|
628 |
> ( abs(yy0(i)-mdv).gt.eps ) )
|
|
|
629 |
> then
|
|
|
630 |
rid=(xx0(i)-xmin)/dx+1.
|
|
|
631 |
rjd=(yy0(i)-ymin)/dy+1.
|
|
|
632 |
xx0(i) = int_index3(lon,nx,ny,1,rid,rjd,1.,mdv)
|
|
|
633 |
yy0(i) = int_index3(lat,nx,ny,1,rid,rjd,1.,mdv)
|
|
|
634 |
else
|
|
|
635 |
xx0(i) = mdv
|
|
|
636 |
yy0(i) = mdv
|
|
|
637 |
endif
|
| 2 |
michaesp |
638 |
|
|
|
639 |
enddo
|
|
|
640 |
|
|
|
641 |
c Write output to list
|
|
|
642 |
if ( outmode.eq.-1 ) then
|
|
|
643 |
fid = 10
|
|
|
644 |
open(fid,file=outfile)
|
|
|
645 |
do i=1,ntra
|
|
|
646 |
write(fid,'(f9.2,f8.2,i6)') xx0(i),yy0(i),nint(zz0(i))
|
|
|
647 |
enddo
|
|
|
648 |
close(fid)
|
|
|
649 |
|
|
|
650 |
c Write output to trajectory
|
|
|
651 |
else
|
|
|
652 |
npoints = 0
|
|
|
653 |
do i=1,ntra
|
|
|
654 |
do j=1,ntim
|
|
|
655 |
npoints = npoints + 1
|
|
|
656 |
tra(i,j,2) = xx0(npoints)
|
|
|
657 |
tra(i,j,3) = yy0(npoints)
|
|
|
658 |
tra(i,j,4) = zz0(npoints)
|
|
|
659 |
enddo
|
|
|
660 |
enddo
|
|
|
661 |
if ( ncol.eq.3 ) ncol = 4
|
|
|
662 |
vars(1) = 'time'
|
|
|
663 |
vars(2) = 'lon'
|
|
|
664 |
vars(3) = 'lat'
|
|
|
665 |
vars(4) = 'z'
|
|
|
666 |
call wopen_tra(fid,outfile,ntra,ntim,ncol,refdate,vars,outmode)
|
|
|
667 |
call write_tra(fid,tra,ntra,ntim,ncol,outmode)
|
|
|
668 |
call close_tra(fid,outmode)
|
|
|
669 |
endif
|
|
|
670 |
|
|
|
671 |
endif
|
|
|
672 |
|
|
|
673 |
c ------------------------------------------------------------
|
|
|
674 |
c Convert a single lat/lon/z list to a x/y/z list
|
|
|
675 |
c ------------------------------------------------------------
|
|
|
676 |
|
|
|
677 |
if ( mode.eq.'-ll2xy.single' ) then
|
|
|
678 |
|
|
|
679 |
c Transform coordinates
|
|
|
680 |
rid = (lonpos-lonmin)/dlon+1.
|
|
|
681 |
rjd = (latpos-latmin)/dlat+1.
|
|
|
682 |
xpos = int_index3(x,nlon,nlat,1,rid,rjd,1.,mdv)
|
|
|
683 |
ypos = int_index3(y,nlon,nlat,1,rid,rjd,1.,mdv)
|
|
|
684 |
|
|
|
685 |
c Write result to screen
|
|
|
686 |
print*,xpos,ypos
|
|
|
687 |
|
|
|
688 |
endif
|
|
|
689 |
|
|
|
690 |
c ------------------------------------------------------------
|
|
|
691 |
c Convert a single x/y/z list to a lon/lat/z list
|
|
|
692 |
c ------------------------------------------------------------
|
|
|
693 |
|
|
|
694 |
if ( mode.eq.'-xy2ll.single' ) then
|
|
|
695 |
|
|
|
696 |
c Transform coordinates
|
|
|
697 |
rid = (xpos-xmin)/dx+1.
|
|
|
698 |
rjd = (ypos-ymin)/dy+1.
|
|
|
699 |
lonpos = int_index3(lon,nx,ny,1,rid,rjd,1.,mdv)
|
|
|
700 |
latpos = int_index3(lat,nx,ny,1,rid,rjd,1.,mdv)
|
|
|
701 |
|
|
|
702 |
c Write result to screen
|
|
|
703 |
print*,lonpos,latpos
|
|
|
704 |
|
|
|
705 |
endif
|
|
|
706 |
|
|
|
707 |
c ------------------------------------------------------------
|
|
|
708 |
c Calculate numerically the maps scale factor
|
|
|
709 |
c ------------------------------------------------------------
|
|
|
710 |
|
|
|
711 |
if ( mode.eq.'-mapscale' ) then
|
|
|
712 |
|
|
|
713 |
c Allocate memory for map scale factors
|
|
|
714 |
allocate(mpx(nx,ny),stat=stat)
|
|
|
715 |
if (stat.ne.0) print*,'*** error allocating array mpx ***'
|
|
|
716 |
allocate(mpy(nx,ny),stat=stat)
|
|
|
717 |
if (stat.ne.0) print*,'*** error allocating array mpy ***'
|
|
|
718 |
|
|
|
719 |
c Get map scale for interior points
|
|
|
720 |
do i=2,nx-1
|
|
|
721 |
do j=2,ny-1
|
|
|
722 |
|
|
|
723 |
c Map scale in x direction
|
|
|
724 |
lon1 = lon(i-1,j)
|
|
|
725 |
lat1 = lat(i-1,j)
|
|
|
726 |
lon2 = lon(i+1,j)
|
|
|
727 |
lat2 = lat(i+1,j)
|
|
|
728 |
radunit = 'km.haversine'
|
|
|
729 |
mpx(i,j) = 0.5 * 1000. * sdis(lon1,lat1,lon2,lat2,radunit)
|
|
|
730 |
|
|
|
731 |
c Map scale in y direction
|
|
|
732 |
lon1 = lon(i,j-1)
|
|
|
733 |
lat1 = lat(i,j-1)
|
|
|
734 |
lon2 = lon(i,j+1)
|
|
|
735 |
lat2 = lat(i,j+1)
|
|
|
736 |
radunit = 'km.haversine'
|
|
|
737 |
mpy(i,j) = 0.5 * 1000. * sdis(lon1,lat1,lon2,lat2,radunit)
|
|
|
738 |
|
|
|
739 |
enddo
|
|
|
740 |
enddo
|
|
|
741 |
|
|
|
742 |
c Copy map scale for boundary line points
|
|
|
743 |
do i=2,nx-1
|
|
|
744 |
mpx(i, 1) = mpx(i, 2)
|
|
|
745 |
mpx(i,ny) = mpx(i,ny-1)
|
|
|
746 |
mpy(i, 1) = mpy(i, 2)
|
|
|
747 |
mpy(i,ny) = mpy(i,ny-1)
|
|
|
748 |
enddo
|
|
|
749 |
do j=2,ny-1
|
|
|
750 |
mpx(1, j) = mpx(2, j)
|
|
|
751 |
mpx(nx,j) = mpx(nx-1,j)
|
|
|
752 |
mpy(1, j) = mpy(2, j)
|
|
|
753 |
mpy(nx,j) = mpy(nx-1,j)
|
|
|
754 |
enddo
|
|
|
755 |
|
|
|
756 |
c Copy map scale factor for boundary corner points
|
|
|
757 |
mpx( 1, 1) = mpx( 2, 2)
|
|
|
758 |
mpy( 1, 1) = mpy( 2, 2)
|
|
|
759 |
mpx(nx, 1) = mpx(nx-1, 2)
|
|
|
760 |
mpy(nx, 1) = mpy(nx-1, 2)
|
|
|
761 |
mpx(nx,ny) = mpx(nx-1,ny-1)
|
|
|
762 |
mpy(nx,ny) = mpy(nx-1,ny-1)
|
|
|
763 |
mpx( 1,ny) = mpx( 2,ny-1)
|
|
|
764 |
mpy( 1,ny) = mpy( 2,ny-1)
|
|
|
765 |
|
| 11 |
michaesp |
766 |
c Apply a diffuive filter
|
|
|
767 |
do i=1,nfilter
|
|
|
768 |
call filt2d (mpx,mpx,nx,ny,1.0,-999.,0,0,0,0)
|
|
|
769 |
call filt2d (mpy,mpy,nx,ny,1.0,-999.,0,0,0,0)
|
|
|
770 |
enddo
|
|
|
771 |
|
| 2 |
michaesp |
772 |
c Write map factors to mapping file
|
|
|
773 |
cdfname = mapfile
|
|
|
774 |
varname = 'MAPSCALE_X'
|
| 8 |
michaesp |
775 |
call writecdf2D(cdfname,varname,mpx,0.,
|
|
|
776 |
> dx,dy,xmin,ymin,nx,ny,1,0,1)
|
| 2 |
michaesp |
777 |
cdfname = mapfile
|
|
|
778 |
varname = 'MAPSCALE_Y'
|
|
|
779 |
call writecdf2D(cdfname,varname,mpy,0.,
|
|
|
780 |
> dx,dy,xmin,ymin,nx,ny,1,0,1)
|
|
|
781 |
|
|
|
782 |
|
|
|
783 |
endif
|
|
|
784 |
|
|
|
785 |
c ------------------------------------------------------------
|
|
|
786 |
c Convert from pressure to height
|
|
|
787 |
c ------------------------------------------------------------
|
|
|
788 |
|
|
|
789 |
if ( mode.eq.'-p2z' ) then
|
|
|
790 |
|
|
|
791 |
c Allocate memory for input and output lists
|
|
|
792 |
allocate(tra(ntra,ntim,ncol),stat=stat)
|
|
|
793 |
if (stat.ne.0) print*,'*** error allocating array tra ***'
|
|
|
794 |
allocate(xx0(ntra*ntim),stat=stat)
|
|
|
795 |
if (stat.ne.0) print*,'*** error allocating array xx0 ***'
|
|
|
796 |
allocate(yy0(ntra*ntim),stat=stat)
|
|
|
797 |
if (stat.ne.0) print*,'*** error allocating array yy0 ***'
|
|
|
798 |
allocate(zz0(ntra*ntim),stat=stat)
|
|
|
799 |
if (stat.ne.0) print*,'*** error allocating array zz0 ***'
|
|
|
800 |
|
|
|
801 |
c Get format of input and output file
|
|
|
802 |
call mode_tra(inpmode,inpfile)
|
|
|
803 |
call mode_tra(outmode,outfile)
|
| 11 |
michaesp |
804 |
if ( outmode.eq.-1) outmode=inpmode
|
| 2 |
michaesp |
805 |
|
|
|
806 |
c Read coordinates from file - Format (x,y,lev)
|
|
|
807 |
if (inpmode.eq.-1) then
|
|
|
808 |
fid = 10
|
|
|
809 |
npoints = 0
|
|
|
810 |
open(fid,file=inpfile)
|
|
|
811 |
do i=1,ntra
|
|
|
812 |
npoints = npoints + 1
|
|
|
813 |
read(fid,*) xx0(npoints),yy0(npoints),zz0(npoints)
|
|
|
814 |
enddo
|
|
|
815 |
close(fid)
|
|
|
816 |
|
|
|
817 |
c Read coordinates from trajectory file
|
|
|
818 |
else
|
|
|
819 |
call ropen_tra(fid,inpfile,ntra,ntim,ncol,refdate,vars,inpmode)
|
|
|
820 |
call read_tra (fid,tra,ntra,ntim,ncol,inpmode)
|
|
|
821 |
call close_tra(fid,inpmode)
|
|
|
822 |
|
|
|
823 |
if ( (vars(2).ne.'x').and.(vars(3).ne.'y') ) then
|
|
|
824 |
print*,' ERROR: input must be in x/y format... Stop'
|
|
|
825 |
stop
|
|
|
826 |
endif
|
|
|
827 |
|
|
|
828 |
npoints = 0
|
|
|
829 |
do i=1,ntra
|
|
|
830 |
do j=1,ntim
|
|
|
831 |
npoints = npoints + 1
|
|
|
832 |
xx0(npoints) = tra(i,j,2)
|
|
|
833 |
yy0(npoints) = tra(i,j,3)
|
|
|
834 |
zz0(npoints) = tra(i,j,4)
|
|
|
835 |
enddo
|
|
|
836 |
enddo
|
|
|
837 |
endif
|
|
|
838 |
|
|
|
839 |
c Transform coordinates
|
|
|
840 |
do i=1,npoints
|
|
|
841 |
|
| 20 |
michaesp |
842 |
if ( ( abs(xx0(i)-mdv).gt.eps ).and.
|
|
|
843 |
> ( abs(yy0(i)-mdv).gt.eps ).and.
|
|
|
844 |
> ( abs(zz0(i)-mdv).gt.eps ) )
|
|
|
845 |
> then
|
|
|
846 |
call get_index3 (rid,rjd,rkd,xx0(i),yy0(i),-zz0(i),1,
|
|
|
847 |
> -p3,-ps,nx,ny,nz,xmin,ymin,dx,dy)
|
| 2 |
michaesp |
848 |
|
| 20 |
michaesp |
849 |
zz0(i) = int_index3(z3,nx,ny,nz,rid,rjd,rkd,mdv)
|
|
|
850 |
else
|
|
|
851 |
xx0(i) = mdv
|
|
|
852 |
yy0(i) = mdv
|
|
|
853 |
zz0(i) = mdv
|
|
|
854 |
endif
|
| 2 |
michaesp |
855 |
|
|
|
856 |
enddo
|
|
|
857 |
|
|
|
858 |
c Write output to list
|
|
|
859 |
if ( outmode.eq.-1 ) then
|
|
|
860 |
fid = 10
|
|
|
861 |
open(fid,file=outfile)
|
|
|
862 |
do i=1,ntra
|
|
|
863 |
write(fid,'(f9.2,f8.2,i6)') xx0(i),yy0(i),nint(zz0(i))
|
|
|
864 |
enddo
|
|
|
865 |
close(fid)
|
|
|
866 |
|
|
|
867 |
c Write output to trajectory
|
|
|
868 |
else
|
|
|
869 |
npoints = 0
|
|
|
870 |
do i=1,ntra
|
|
|
871 |
do j=1,ntim
|
|
|
872 |
npoints = npoints + 1
|
|
|
873 |
tra(i,j,2) = xx0(npoints)
|
|
|
874 |
tra(i,j,3) = yy0(npoints)
|
|
|
875 |
tra(i,j,4) = zz0(npoints)
|
|
|
876 |
enddo
|
|
|
877 |
enddo
|
|
|
878 |
if ( ncol.eq.3 ) ncol = 4
|
|
|
879 |
vars(1) = 'time'
|
|
|
880 |
vars(2) = 'x'
|
|
|
881 |
vars(3) = 'y'
|
|
|
882 |
vars(4) = 'z'
|
|
|
883 |
call wopen_tra(fid,outfile,ntra,ntim,ncol,refdate,vars,outmode)
|
|
|
884 |
call write_tra(fid,tra,ntra,ntim,ncol,outmode)
|
|
|
885 |
call close_tra(fid,outmode)
|
|
|
886 |
endif
|
|
|
887 |
|
|
|
888 |
endif
|
|
|
889 |
|
|
|
890 |
c ------------------------------------------------------------
|
|
|
891 |
c Convert single x/y/p to x/y/z
|
|
|
892 |
c ------------------------------------------------------------
|
|
|
893 |
|
|
|
894 |
if ( mode.eq.'-p2z.single' ) then
|
|
|
895 |
|
|
|
896 |
c Transform coordinates - change from descending to ascending (minus sign)
|
|
|
897 |
call get_index3 (rid,rjd,rkd,xpos,ypos,-ppos,1,
|
|
|
898 |
> -p3,-ps,nx,ny,nz,xmin,ymin,dx,dy)
|
|
|
899 |
|
|
|
900 |
zpos = int_index3(z3,nx,ny,nz,rid,rjd,rkd,mdv)
|
|
|
901 |
|
|
|
902 |
c Write result to screen
|
|
|
903 |
print*,xpos,ypos,zpos
|
|
|
904 |
|
|
|
905 |
endif
|
|
|
906 |
|
|
|
907 |
c ------------------------------------------------------------
|
|
|
908 |
c Convert from height to pressure
|
|
|
909 |
c ------------------------------------------------------------
|
|
|
910 |
|
|
|
911 |
if ( mode.eq.'-z2p' ) then
|
|
|
912 |
|
|
|
913 |
c Allocate memory for input and output lists
|
|
|
914 |
allocate(tra(ntra,ntim,ncol),stat=stat)
|
|
|
915 |
if (stat.ne.0) print*,'*** error allocating array tra ***'
|
|
|
916 |
allocate(xx0(ntra*ntim),stat=stat)
|
|
|
917 |
if (stat.ne.0) print*,'*** error allocating array xx0 ***'
|
|
|
918 |
allocate(yy0(ntra*ntim),stat=stat)
|
|
|
919 |
if (stat.ne.0) print*,'*** error allocating array yy0 ***'
|
|
|
920 |
allocate(zz0(ntra*ntim),stat=stat)
|
|
|
921 |
if (stat.ne.0) print*,'*** error allocating array zz0 ***'
|
|
|
922 |
|
|
|
923 |
c Get format of input and output file
|
|
|
924 |
call mode_tra(inpmode,inpfile)
|
|
|
925 |
call mode_tra(outmode,outfile)
|
| 11 |
michaesp |
926 |
if ( outmode.eq.-1) outmode=inpmode
|
| 2 |
michaesp |
927 |
|
|
|
928 |
c Read coordinates from file - Format (x,y,lev)
|
|
|
929 |
if (inpmode.eq.-1) then
|
|
|
930 |
fid = 10
|
|
|
931 |
npoints = 0
|
|
|
932 |
open(fid,file=inpfile)
|
|
|
933 |
do i=1,ntra
|
|
|
934 |
npoints = npoints + 1
|
|
|
935 |
read(fid,*) xx0(npoints),yy0(npoints),zz0(npoints)
|
|
|
936 |
enddo
|
|
|
937 |
close(fid)
|
|
|
938 |
|
|
|
939 |
c Read coordinates from trajectory file
|
|
|
940 |
else
|
|
|
941 |
call ropen_tra(fid,inpfile,ntra,ntim,ncol,refdate,vars,inpmode)
|
|
|
942 |
call read_tra (fid,tra,ntra,ntim,ncol,inpmode)
|
|
|
943 |
call close_tra(fid,inpmode)
|
|
|
944 |
|
|
|
945 |
if ( (vars(2).ne.'x').and.(vars(3).ne.'y') ) then
|
|
|
946 |
print*,' ERROR: input must be in x/y format... Stop'
|
|
|
947 |
stop
|
|
|
948 |
endif
|
|
|
949 |
|
|
|
950 |
npoints = 0
|
|
|
951 |
do i=1,ntra
|
|
|
952 |
do j=1,ntim
|
|
|
953 |
npoints = npoints + 1
|
|
|
954 |
xx0(npoints) = tra(i,j,2)
|
|
|
955 |
yy0(npoints) = tra(i,j,3)
|
|
|
956 |
zz0(npoints) = tra(i,j,4)
|
|
|
957 |
enddo
|
|
|
958 |
enddo
|
|
|
959 |
endif
|
|
|
960 |
|
|
|
961 |
c Transform coordinates
|
|
|
962 |
do i=1,npoints
|
|
|
963 |
|
| 20 |
michaesp |
964 |
if ( ( abs(xx0(i)-mdv).gt.eps ).and.
|
|
|
965 |
> ( abs(yy0(i)-mdv).gt.eps ).and.
|
|
|
966 |
> ( abs(zz0(i)-mdv).gt.eps ) )
|
|
|
967 |
> then
|
|
|
968 |
call get_index3 (rid,rjd,rkd,xx0(i),yy0(i),zz0(i),1,
|
|
|
969 |
> z3,zb,nx,ny,nz,xmin,ymin,dx,dy)
|
| 2 |
michaesp |
970 |
|
| 20 |
michaesp |
971 |
zz0(i) = int_index3(p3,nx,ny,nz,rid,rjd,rkd,mdv)
|
|
|
972 |
else
|
|
|
973 |
xx0(i) = mdv
|
|
|
974 |
yy0(i) = mdv
|
|
|
975 |
zz0(i) = mdv
|
|
|
976 |
endif
|
| 2 |
michaesp |
977 |
|
|
|
978 |
enddo
|
|
|
979 |
|
|
|
980 |
c Write output to list
|
|
|
981 |
if ( outmode.eq.-1 ) then
|
|
|
982 |
fid = 10
|
|
|
983 |
open(fid,file=outfile)
|
|
|
984 |
do i=1,ntra
|
|
|
985 |
write(fid,'(f9.2,f8.2,i6)') xx0(i),yy0(i),nint(zz0(i))
|
|
|
986 |
enddo
|
|
|
987 |
close(fid)
|
|
|
988 |
|
|
|
989 |
c Write output to trajectory
|
|
|
990 |
else
|
|
|
991 |
npoints = 0
|
|
|
992 |
do i=1,ntra
|
|
|
993 |
do j=1,ntim
|
|
|
994 |
npoints = npoints + 1
|
|
|
995 |
tra(i,j,2) = xx0(npoints)
|
|
|
996 |
tra(i,j,3) = yy0(npoints)
|
|
|
997 |
tra(i,j,4) = zz0(npoints)
|
|
|
998 |
enddo
|
|
|
999 |
enddo
|
|
|
1000 |
if ( ncol.eq.3 ) ncol = 4
|
|
|
1001 |
vars(1) = 'time'
|
|
|
1002 |
vars(2) = 'x'
|
|
|
1003 |
vars(3) = 'y'
|
|
|
1004 |
vars(4) = 'p'
|
|
|
1005 |
call wopen_tra(fid,outfile,ntra,ntim,ncol,refdate,vars,outmode)
|
|
|
1006 |
call write_tra(fid,tra,ntra,ntim,ncol,outmode)
|
|
|
1007 |
call close_tra(fid,outmode)
|
|
|
1008 |
endif
|
|
|
1009 |
|
|
|
1010 |
endif
|
|
|
1011 |
|
|
|
1012 |
c ------------------------------------------------------------
|
|
|
1013 |
c Convert single x/y/z to x/y/p
|
|
|
1014 |
c ------------------------------------------------------------
|
|
|
1015 |
|
|
|
1016 |
if ( mode.eq.'-z2p.single' ) then
|
|
|
1017 |
|
|
|
1018 |
c Transform coordinates - change from descending to ascending (minus sign)
|
|
|
1019 |
call get_index3 (rid,rjd,rkd,xpos,ypos,zpos,1,
|
|
|
1020 |
> z3,zb,nx,ny,nz,xmin,ymin,dx,dy)
|
|
|
1021 |
|
|
|
1022 |
ppos = int_index3(p3,nx,ny,nz,rid,rjd,rkd,mdv)
|
|
|
1023 |
|
|
|
1024 |
c Write result to screen
|
|
|
1025 |
print*,xpos,ypos,ppos
|
|
|
1026 |
|
|
|
1027 |
endif
|
|
|
1028 |
|
|
|
1029 |
end
|
|
|
1030 |
|
|
|
1031 |
|
|
|
1032 |
c ********************************************************************
|
|
|
1033 |
c * GRIDDING SUBROUTINES *
|
|
|
1034 |
c ********************************************************************
|
|
|
1035 |
|
|
|
1036 |
c ---------------------------------------------------------------------
|
|
|
1037 |
c Gridding of one single data point (smoothing in km, deg, gridp)
|
|
|
1038 |
c ---------------------------------------------------------------------
|
|
|
1039 |
|
|
|
1040 |
subroutine gridding1 (lat,lon,addval,radius,unit,
|
|
|
1041 |
> connect,connectval,
|
|
|
1042 |
> out,outc,nx,ny,xmin,ymin,dx,dy)
|
|
|
1043 |
|
|
|
1044 |
implicit none
|
|
|
1045 |
|
|
|
1046 |
c Declaration of subroutine parameters
|
|
|
1047 |
real lat,lon
|
|
|
1048 |
integer nx,ny
|
|
|
1049 |
real xmin,ymin,dx,dy
|
|
|
1050 |
real out(nx,ny),outc(nx,ny)
|
|
|
1051 |
real radius
|
|
|
1052 |
character*80 unit
|
|
|
1053 |
integer connectval
|
|
|
1054 |
integer connect(nx,ny)
|
|
|
1055 |
real addval
|
|
|
1056 |
|
|
|
1057 |
c Auxiliary variables
|
|
|
1058 |
integer i,j,k
|
|
|
1059 |
integer mu,md,nr,nl,n,m
|
|
|
1060 |
integer stackx(nx*ny),stacky(nx*ny)
|
|
|
1061 |
integer tab_x(nx*ny),tab_y(nx*ny)
|
|
|
1062 |
real tab_r(nx*ny)
|
|
|
1063 |
integer sp
|
|
|
1064 |
real lat2,lon2
|
|
|
1065 |
real dist,sum
|
|
|
1066 |
real xmax
|
|
|
1067 |
integer periodic
|
|
|
1068 |
integer test
|
|
|
1069 |
character ch
|
|
|
1070 |
|
|
|
1071 |
c Numerical epsilon
|
|
|
1072 |
real eps
|
|
|
1073 |
parameter (eps=0.01)
|
|
|
1074 |
|
|
|
1075 |
c Externals
|
|
|
1076 |
real sdis,weight
|
|
|
1077 |
external sdis,weight
|
|
|
1078 |
|
|
|
1079 |
c Check whether lat/lon point is valid
|
|
|
1080 |
xmax=xmin+real(nx-1)*dx
|
|
|
1081 |
if (lon.lt.xmin-eps) lon=lon+360.
|
|
|
1082 |
if (lon.gt.xmax+eps) lon=lon-360.
|
|
|
1083 |
if (abs(lat-90).lt.eps) lat=90.
|
|
|
1084 |
if (abs(lat+90).lt.eps) lat=-90.
|
|
|
1085 |
if ((abs(lat).gt.(90.+eps)).or.
|
|
|
1086 |
> (lon.lt.xmin-eps).or.(lon.gt.xmax+eps)) then
|
|
|
1087 |
print*,'Invalid lat/lon point ',lat,lon
|
|
|
1088 |
return
|
|
|
1089 |
endif
|
|
|
1090 |
|
|
|
1091 |
c Set flag for periodic domain
|
|
|
1092 |
if (abs(xmax-xmin-360.).lt.eps) then
|
|
|
1093 |
periodic=1
|
|
|
1094 |
else if (abs(xmax-xmin-360+dx).lt.eps) then
|
|
|
1095 |
periodic=2
|
|
|
1096 |
else
|
|
|
1097 |
periodic=0
|
|
|
1098 |
endif
|
|
|
1099 |
|
|
|
1100 |
c Get indices of one coarse grid point within search radius
|
|
|
1101 |
i=nint((lon-xmin)/dx)+1
|
|
|
1102 |
if ((i.eq.nx).and.(periodic.eq.1)) i=1
|
|
|
1103 |
j=nint((lat-ymin)/dy)+1
|
|
|
1104 |
lat2=ymin+real(j-1)*dy
|
|
|
1105 |
lon2=xmin+real(i-1)*dx
|
|
|
1106 |
dist=sdis(lon,lat,lon2,lat2,unit)
|
|
|
1107 |
if (dist.gt.radius) then
|
|
|
1108 |
print*,'1: Search radius is too small...'
|
|
|
1109 |
stop
|
|
|
1110 |
endif
|
|
|
1111 |
|
|
|
1112 |
c Get connected points
|
|
|
1113 |
k=0
|
|
|
1114 |
stackx(1)=i
|
|
|
1115 |
stacky(1)=j
|
|
|
1116 |
sp = 1
|
|
|
1117 |
do while (sp.ne.0)
|
|
|
1118 |
|
|
|
1119 |
c Get an element from stack
|
|
|
1120 |
n=stackx(sp)
|
|
|
1121 |
m=stacky(sp)
|
|
|
1122 |
sp=sp-1
|
|
|
1123 |
|
|
|
1124 |
c Get distance from reference point
|
|
|
1125 |
lat2=ymin+real(m-1)*dy
|
|
|
1126 |
lon2=xmin+real(n-1)*dx
|
|
|
1127 |
dist=sdis(lon,lat,lon2,lat2,unit)
|
|
|
1128 |
|
|
|
1129 |
c Check whether distance is smaller than search radius: connected
|
|
|
1130 |
if (dist.lt.radius) then
|
|
|
1131 |
|
|
|
1132 |
c Make entry in filter mask
|
|
|
1133 |
k=k+1
|
|
|
1134 |
tab_x(k)=n
|
|
|
1135 |
tab_y(k)=m
|
|
|
1136 |
tab_r(k)=weight(dist,radius)
|
|
|
1137 |
|
|
|
1138 |
c Mark this point as visited
|
|
|
1139 |
connect(n,m)=connectval
|
|
|
1140 |
|
|
|
1141 |
c Get coordinates of neighbouring points
|
|
|
1142 |
nr=n+1
|
|
|
1143 |
if ((nr.gt.nx) .and.(periodic.eq.0)) nr=nx
|
|
|
1144 |
if ((nr.gt.nx-1).and.(periodic.eq.1)) nr=1
|
|
|
1145 |
if ((nr.gt.nx) .and.(periodic.eq.2)) nr=1
|
|
|
1146 |
nl=n-1
|
|
|
1147 |
if ((nl.lt.1).and.(periodic.eq.0)) nl=1
|
|
|
1148 |
if ((nl.lt.1).and.(periodic.eq.1)) nl=nx-1
|
|
|
1149 |
if ((nl.lt.1).and.(periodic.eq.2)) nl=nx
|
|
|
1150 |
mu=m+1
|
|
|
1151 |
if (mu.gt.ny) mu=ny
|
|
|
1152 |
md=m-1
|
|
|
1153 |
if (md.lt.1) md=1
|
|
|
1154 |
|
|
|
1155 |
c Update stack
|
|
|
1156 |
if (connect(nr,m).ne.connectval) then
|
|
|
1157 |
connect(nr,m)=connectval
|
|
|
1158 |
sp=sp+1
|
|
|
1159 |
stackx(sp)=nr
|
|
|
1160 |
stacky(sp)=m
|
|
|
1161 |
endif
|
|
|
1162 |
if (connect(nl,m).ne.connectval) then
|
|
|
1163 |
connect(nl,m)=connectval
|
|
|
1164 |
sp=sp+1
|
|
|
1165 |
stackx(sp)=nl
|
|
|
1166 |
stacky(sp)=m
|
|
|
1167 |
endif
|
|
|
1168 |
if (connect(n,mu).ne.connectval) then
|
|
|
1169 |
connect(n,mu)=connectval
|
|
|
1170 |
sp=sp+1
|
|
|
1171 |
stackx(sp)=n
|
|
|
1172 |
stacky(sp)=mu
|
|
|
1173 |
endif
|
|
|
1174 |
if (connect(n,md).ne.connectval) then
|
|
|
1175 |
connect(n,md)=connectval
|
|
|
1176 |
sp=sp+1
|
|
|
1177 |
stackx(sp)=n
|
|
|
1178 |
stacky(sp)=md
|
|
|
1179 |
endif
|
|
|
1180 |
endif
|
|
|
1181 |
|
|
|
1182 |
end do
|
|
|
1183 |
|
|
|
1184 |
if (k.ge.1) then
|
|
|
1185 |
sum=0.
|
|
|
1186 |
do i=1,k
|
|
|
1187 |
sum=sum+tab_r(i)
|
|
|
1188 |
enddo
|
|
|
1189 |
do i=1,k
|
|
|
1190 |
out (tab_x(i),tab_y(i))=out(tab_x(i),tab_y(i))+
|
|
|
1191 |
> addval*tab_r(i)/sum
|
|
|
1192 |
outc(tab_x(i),tab_y(i))=outc(tab_x(i),tab_y(i))+
|
|
|
1193 |
> 1.*tab_r(i)/sum
|
|
|
1194 |
|
|
|
1195 |
if ((tab_x(i).eq.1).and.(periodic.eq.1)) then
|
|
|
1196 |
out(nx,tab_y(i))=out(nx,tab_y(i))+
|
|
|
1197 |
> addval*tab_r(i)/sum
|
|
|
1198 |
outc(nx,tab_y(i))=outc(nx,tab_y(i))+
|
|
|
1199 |
> 1.*tab_r(i)/sum
|
|
|
1200 |
|
|
|
1201 |
endif
|
|
|
1202 |
enddo
|
|
|
1203 |
else
|
|
|
1204 |
print*,'2: Search radius is too small...'
|
|
|
1205 |
stop
|
|
|
1206 |
endif
|
|
|
1207 |
|
|
|
1208 |
end
|
|
|
1209 |
|
|
|
1210 |
|
|
|
1211 |
c ----------------------------------------------------------------------
|
|
|
1212 |
c Get spherical distance between lat/lon points
|
|
|
1213 |
c ----------------------------------------------------------------------
|
| 15 |
michaesp |
1214 |
|
| 2 |
michaesp |
1215 |
real function sdis(xp,yp,xq,yq,unit)
|
|
|
1216 |
|
|
|
1217 |
c Calculates spherical distance (in km) between two points given
|
|
|
1218 |
c by their spherical coordinates (xp,yp) and (xq,yq), respectively.
|
|
|
1219 |
|
|
|
1220 |
real,parameter :: re=6371.229
|
|
|
1221 |
real,parameter :: rad2deg=180./3.14159265
|
|
|
1222 |
real,parameter :: deg2rad=3.141592654/180.
|
|
|
1223 |
|
|
|
1224 |
real xp,yp,xq,yq,arg
|
|
|
1225 |
character*80 unit
|
|
|
1226 |
real dlon,dlat,alpha,rlat1,ralt2
|
|
|
1227 |
|
|
|
1228 |
if ( unit.eq.'km' ) then
|
|
|
1229 |
|
| 15 |
michaesp |
1230 |
arg=sin(yp*deg2rad)*sin(yq*deg2rad)+
|
|
|
1231 |
> cos(yp*deg2rad)*cos(yq*deg2rad)*cos((xp-xq)*deg2rad)
|
| 2 |
michaesp |
1232 |
if (arg.lt.-1.) arg=-1.
|
|
|
1233 |
if (arg.gt.1.) arg=1.
|
|
|
1234 |
sdis=re*acos(arg)
|
|
|
1235 |
|
|
|
1236 |
elseif ( unit.eq.'deg' ) then
|
|
|
1237 |
|
|
|
1238 |
dlon = xp-xq
|
|
|
1239 |
if ( dlon.gt. 180. ) dlon = dlon - 360.
|
|
|
1240 |
if ( dlon.lt.-180. ) dlon = dlon + 360.
|
|
|
1241 |
sdis = sqrt( dlon**2 + (yp-yq)**2 )
|
|
|
1242 |
|
|
|
1243 |
elseif ( unit.eq.'km.haversine' ) then
|
|
|
1244 |
|
|
|
1245 |
dlat = (yp - yq)*deg2rad
|
|
|
1246 |
dlon = (xp - xq)*deg2rad
|
|
|
1247 |
rlat1 = yp*deg2rad
|
|
|
1248 |
rlat2 = yq*deg2rad
|
|
|
1249 |
|
|
|
1250 |
alpha = ( sin(0.5*dlat)**2 ) +
|
|
|
1251 |
> ( sin(0.5*dlon)**2 )*cos(rlat1)*cos(rlat2)
|
|
|
1252 |
|
|
|
1253 |
sdis = 4. * re * atan2( sqrt(alpha),1. + sqrt( 1. - alpha ) )
|
|
|
1254 |
|
|
|
1255 |
endif
|
|
|
1256 |
|
|
|
1257 |
end
|
|
|
1258 |
|
|
|
1259 |
c ----------------------------------------------------------------------
|
|
|
1260 |
c Weight function for the filter mask
|
|
|
1261 |
c ----------------------------------------------------------------------
|
|
|
1262 |
|
|
|
1263 |
real function weight (r,radius)
|
|
|
1264 |
|
|
|
1265 |
c Attribute to each distanc r its corresponding weight in the filter mask
|
|
|
1266 |
|
|
|
1267 |
implicit none
|
|
|
1268 |
|
|
|
1269 |
c Declaration of subroutine parameters
|
|
|
1270 |
real r
|
|
|
1271 |
real radius
|
|
|
1272 |
|
|
|
1273 |
c Simple 0/1 mask
|
|
|
1274 |
if (r.lt.radius) then
|
|
|
1275 |
weight=1.-0.65*r/radius
|
|
|
1276 |
else
|
|
|
1277 |
weight=0.
|
|
|
1278 |
endif
|
|
|
1279 |
|
|
|
1280 |
end
|
|
|
1281 |
|
|
|
1282 |
|
|
|
1283 |
c ********************************************************************
|
|
|
1284 |
c * INPUT / OUTPUT SUBROUTINES *
|
|
|
1285 |
c ********************************************************************
|
|
|
1286 |
|
|
|
1287 |
c --------------------------------------------------------------------
|
|
|
1288 |
c Subroutines to write the netcdf output file
|
|
|
1289 |
c --------------------------------------------------------------------
|
|
|
1290 |
|
|
|
1291 |
subroutine writecdf2D(cdfname,
|
|
|
1292 |
> varname,arr,time,
|
|
|
1293 |
> dx,dy,xmin,ymin,nx,ny,nz,
|
|
|
1294 |
> crefile,crevar)
|
|
|
1295 |
|
|
|
1296 |
IMPLICIT NONE
|
|
|
1297 |
|
|
|
1298 |
c Declaration of input parameters
|
|
|
1299 |
character*80 cdfname,varname
|
|
|
1300 |
integer nx,ny,nz
|
|
|
1301 |
real arr(nx,ny,nz)
|
|
|
1302 |
real dx,dy,xmin,ymin
|
|
|
1303 |
real time
|
|
|
1304 |
integer crefile,crevar
|
|
|
1305 |
|
|
|
1306 |
c Further variables
|
|
|
1307 |
real varmin(4),varmax(4),stag(4)
|
|
|
1308 |
integer ierr,cdfid,ndim,vardim(4)
|
|
|
1309 |
character*80 cstname
|
|
|
1310 |
real mdv
|
|
|
1311 |
integer i
|
| 11 |
michaesp |
1312 |
integer nvars
|
|
|
1313 |
character*80 vars(300)
|
| 2 |
michaesp |
1314 |
|
|
|
1315 |
C Definitions
|
|
|
1316 |
varmin(1)=xmin
|
|
|
1317 |
varmin(2)=ymin
|
|
|
1318 |
varmin(3)=1050.
|
|
|
1319 |
varmax(1)=xmin+real(nx-1)*dx
|
|
|
1320 |
varmax(2)=ymin+real(ny-1)*dy
|
|
|
1321 |
varmax(3)=1050.
|
|
|
1322 |
cstname='no_constants_file'
|
|
|
1323 |
ndim=4
|
|
|
1324 |
vardim(1)=nx
|
|
|
1325 |
vardim(2)=ny
|
|
|
1326 |
vardim(3)=nz
|
|
|
1327 |
stag(1)=0.
|
|
|
1328 |
stag(2)=0.
|
|
|
1329 |
stag(3)=0.
|
|
|
1330 |
mdv=-999.98999
|
|
|
1331 |
|
|
|
1332 |
C Create the file
|
|
|
1333 |
if (crefile.eq.0) then
|
|
|
1334 |
call cdfwopn(cdfname,cdfid,ierr)
|
|
|
1335 |
if (ierr.ne.0) goto 906
|
|
|
1336 |
else if (crefile.eq.1) then
|
|
|
1337 |
call crecdf(cdfname,cdfid,
|
|
|
1338 |
> varmin,varmax,ndim,cstname,ierr)
|
|
|
1339 |
if (ierr.ne.0) goto 903
|
|
|
1340 |
endif
|
|
|
1341 |
|
| 11 |
michaesp |
1342 |
c Check whether the variable is already on the file
|
|
|
1343 |
call getvars(cdfid,nvars,vars,ierr)
|
|
|
1344 |
if (ierr.ne.0) goto 906
|
|
|
1345 |
do i=1,nvars
|
|
|
1346 |
if ( vars(i).eq.varname ) crevar = 0
|
|
|
1347 |
enddo
|
|
|
1348 |
|
| 2 |
michaesp |
1349 |
c Write the data to the netcdf file, and close the file
|
|
|
1350 |
if (crevar.eq.1) then
|
|
|
1351 |
call putdef(cdfid,varname,ndim,mdv,
|
|
|
1352 |
> vardim,varmin,varmax,stag,ierr)
|
|
|
1353 |
if (ierr.ne.0) goto 904
|
|
|
1354 |
endif
|
|
|
1355 |
call putdat(cdfid,varname,time,0,arr,ierr)
|
|
|
1356 |
if (ierr.ne.0) goto 905
|
|
|
1357 |
call clscdf(cdfid,ierr)
|
|
|
1358 |
|
|
|
1359 |
return
|
|
|
1360 |
|
|
|
1361 |
c Error handling
|
|
|
1362 |
903 print*,'*** Problem to create netcdf file ***'
|
|
|
1363 |
stop
|
|
|
1364 |
904 print*,'*** Problem to write definition ***'
|
|
|
1365 |
stop
|
|
|
1366 |
905 print*,'*** Problem to write data ***'
|
|
|
1367 |
stop
|
|
|
1368 |
906 print*,'*** Problem to open netcdf file ***'
|
|
|
1369 |
stop
|
|
|
1370 |
|
|
|
1371 |
end
|
|
|
1372 |
|
|
|
1373 |
|
|
|
1374 |
c -----------------------------------------------
|
|
|
1375 |
c Subroutine to read a netcdf output file
|
|
|
1376 |
c -----------------------------------------------
|
|
|
1377 |
|
|
|
1378 |
subroutine readcdf2D(cdfname,varname,arr,time,
|
|
|
1379 |
> dx,dy,xmin,ymin,nx,ny,nz)
|
|
|
1380 |
|
|
|
1381 |
implicit none
|
|
|
1382 |
|
|
|
1383 |
c Declaration of input parameters
|
|
|
1384 |
character*80 cdfname,varname
|
|
|
1385 |
integer nx,ny,nz
|
|
|
1386 |
real arr(nx,ny,nz)
|
|
|
1387 |
real dx,dy,xmin,ymin
|
|
|
1388 |
real time
|
|
|
1389 |
|
|
|
1390 |
c Internal variables for the netcdf file
|
|
|
1391 |
real varmin(4),varmax(4),stag(4)
|
|
|
1392 |
integer ierr,cdfid,ndim,vardim(4)
|
|
|
1393 |
real mdv
|
|
|
1394 |
real delx,dely
|
|
|
1395 |
real times(500)
|
|
|
1396 |
integer ntimes,flag
|
|
|
1397 |
|
|
|
1398 |
c Numerical epsilon
|
|
|
1399 |
real eps
|
|
|
1400 |
parameter (eps=0.01)
|
|
|
1401 |
|
|
|
1402 |
c Auxiliary variables
|
|
|
1403 |
integer i,j,k
|
|
|
1404 |
|
|
|
1405 |
c Initialize the ouput array
|
|
|
1406 |
do i=1,nx
|
|
|
1407 |
do j=1,ny
|
|
|
1408 |
do k=1,nz
|
|
|
1409 |
arr(i,j,k)=0.
|
|
|
1410 |
enddo
|
|
|
1411 |
enddo
|
|
|
1412 |
enddo
|
|
|
1413 |
|
|
|
1414 |
c Try to open the netcdf file and to read the variable
|
|
|
1415 |
call cdfopn(cdfname,cdfid,ierr)
|
|
|
1416 |
if (ierr.ne.0) goto 801
|
|
|
1417 |
|
|
|
1418 |
c Check whether the specifieed time is available
|
|
|
1419 |
call gettimes(cdfid,times,ntimes,ierr)
|
|
|
1420 |
if (ierr.ne.0) goto 801
|
|
|
1421 |
flag=0
|
|
|
1422 |
do i=1,ntimes
|
|
|
1423 |
if (abs(times(i)-time).lt.eps) flag=1
|
|
|
1424 |
enddo
|
|
|
1425 |
if (flag.eq.0) then
|
|
|
1426 |
print*,'No such time on cdf',time
|
|
|
1427 |
stop
|
|
|
1428 |
endif
|
|
|
1429 |
|
|
|
1430 |
c Get the variable definition, and the grid
|
|
|
1431 |
call getdef(cdfid,varname,ndim,mdv,vardim,varmin,varmax,
|
|
|
1432 |
> stag,ierr)
|
|
|
1433 |
if (ierr.ne.0) goto 801
|
|
|
1434 |
|
|
|
1435 |
c Set parameters or read parameters - depending on nx,ny
|
|
|
1436 |
if ( (nx.eq.1).and.(ny.eq.1) ) then
|
|
|
1437 |
dx = (varmax(1)-varmin(1))/real(vardim(1)-1)
|
|
|
1438 |
dy = (varmax(2)-varmin(2))/real(vardim(2)-1)
|
|
|
1439 |
nx = vardim(1)
|
|
|
1440 |
ny = vardim(2)
|
|
|
1441 |
nz = vardim(3)
|
|
|
1442 |
xmin = varmin(1)
|
|
|
1443 |
ymin = varmin(2)
|
|
|
1444 |
else
|
|
|
1445 |
call getdat(cdfid,varname,time,0,arr,ierr)
|
|
|
1446 |
if (ierr.ne.0) goto 801
|
|
|
1447 |
endif
|
|
|
1448 |
|
|
|
1449 |
c Close data file
|
|
|
1450 |
call clscdf(cdfid,ierr)
|
|
|
1451 |
|
|
|
1452 |
return
|
|
|
1453 |
|
|
|
1454 |
c Exception handling
|
|
|
1455 |
801 print*,'Problems in reading netcdf file'
|
|
|
1456 |
stop
|
|
|
1457 |
|
|
|
1458 |
end
|
|
|
1459 |
|
|
|
1460 |
|
| 11 |
michaesp |
1461 |
c -----------------------------------------------
|
|
|
1462 |
c Diffusive filter
|
|
|
1463 |
c -----------------------------------------------
|
| 2 |
michaesp |
1464 |
|
| 11 |
michaesp |
1465 |
subroutine filt2d (a,af,nx,ny,fil,misdat,
|
|
|
1466 |
& iperx,ipery,ispol,inpol)
|
| 2 |
michaesp |
1467 |
|
| 11 |
michaesp |
1468 |
c Apply a conservative diffusion operator onto the 2d field a,
|
|
|
1469 |
c with full missing data checking.
|
|
|
1470 |
c
|
|
|
1471 |
c a real inp array to be filtered, dimensioned (nx,ny)
|
|
|
1472 |
c af real out filtered array, dimensioned (nx,ny), can be
|
|
|
1473 |
c equivalenced with array a in the calling routine
|
|
|
1474 |
c f1 real workarray, dimensioned (nx+1,ny)
|
|
|
1475 |
c f2 real workarray, dimensioned (nx,ny+1)
|
|
|
1476 |
c fil real inp filter-coeff., 0<afil<=1. Maximum filtering with afil=1
|
|
|
1477 |
c corresponds to one application of the linear filter.
|
|
|
1478 |
c misdat real inp missing-data value, a(i,j)=misdat indicates that
|
|
|
1479 |
c the corresponding value is not available. The
|
|
|
1480 |
c misdat-checking can be switched off with with misdat=0.
|
|
|
1481 |
c iperx int inp periodic boundaries in the x-direction (1=yes,0=no)
|
|
|
1482 |
c ipery int inp periodic boundaries in the y-direction (1=yes,0=no)
|
|
|
1483 |
c inpol int inp northpole at j=ny (1=yes,0=no)
|
|
|
1484 |
c ispol int inp southpole at j=1 (1=yes,0=no)
|
|
|
1485 |
c
|
|
|
1486 |
c Christoph Schaer, 1993
|
| 2 |
michaesp |
1487 |
|
| 11 |
michaesp |
1488 |
c argument declaration
|
|
|
1489 |
integer nx,ny
|
|
|
1490 |
real a(nx,ny),af(nx,ny),fil,misdat
|
|
|
1491 |
integer iperx,ipery,inpol,ispol
|
| 2 |
michaesp |
1492 |
|
| 11 |
michaesp |
1493 |
c local variable declaration
|
|
|
1494 |
integer i,j,is
|
|
|
1495 |
real fh
|
|
|
1496 |
real f1(nx+1,ny),f2(nx,ny+1)
|
| 2 |
michaesp |
1497 |
|
| 11 |
michaesp |
1498 |
c compute constant fh
|
|
|
1499 |
fh=0.125*fil
|
| 2 |
michaesp |
1500 |
|
| 11 |
michaesp |
1501 |
c compute fluxes in x-direction
|
|
|
1502 |
if (misdat.eq.0.) then
|
|
|
1503 |
do j=1,ny
|
|
|
1504 |
do i=2,nx
|
|
|
1505 |
f1(i,j)=a(i-1,j)-a(i,j)
|
|
|
1506 |
enddo
|
|
|
1507 |
enddo
|
|
|
1508 |
else
|
|
|
1509 |
do j=1,ny
|
|
|
1510 |
do i=2,nx
|
|
|
1511 |
if ((a(i,j).eq.misdat).or.(a(i-1,j).eq.misdat)) then
|
|
|
1512 |
f1(i,j)=0.
|
|
|
1513 |
else
|
|
|
1514 |
f1(i,j)=a(i-1,j)-a(i,j)
|
|
|
1515 |
endif
|
|
|
1516 |
enddo
|
|
|
1517 |
enddo
|
|
|
1518 |
endif
|
|
|
1519 |
if (iperx.eq.1) then
|
|
|
1520 |
c do periodic boundaries in the x-direction
|
|
|
1521 |
do j=1,ny
|
|
|
1522 |
f1(1,j)=f1(nx,j)
|
|
|
1523 |
f1(nx+1,j)=f1(2,j)
|
|
|
1524 |
enddo
|
|
|
1525 |
else
|
|
|
1526 |
c set boundary-fluxes to zero
|
|
|
1527 |
do j=1,ny
|
|
|
1528 |
f1(1,j)=0.
|
|
|
1529 |
f1(nx+1,j)=0.
|
|
|
1530 |
enddo
|
|
|
1531 |
endif
|
| 2 |
michaesp |
1532 |
|
| 11 |
michaesp |
1533 |
c compute fluxes in y-direction
|
|
|
1534 |
if (misdat.eq.0.) then
|
|
|
1535 |
do j=2,ny
|
|
|
1536 |
do i=1,nx
|
|
|
1537 |
f2(i,j)=a(i,j-1)-a(i,j)
|
|
|
1538 |
enddo
|
|
|
1539 |
enddo
|
|
|
1540 |
else
|
|
|
1541 |
do j=2,ny
|
|
|
1542 |
do i=1,nx
|
|
|
1543 |
if ((a(i,j).eq.misdat).or.(a(i,j-1).eq.misdat)) then
|
|
|
1544 |
f2(i,j)=0.
|
|
|
1545 |
else
|
|
|
1546 |
f2(i,j)=a(i,j-1)-a(i,j)
|
|
|
1547 |
endif
|
|
|
1548 |
enddo
|
|
|
1549 |
enddo
|
|
|
1550 |
endif
|
|
|
1551 |
c set boundary-fluxes to zero
|
|
|
1552 |
do i=1,nx
|
|
|
1553 |
f2(i,1)=0.
|
|
|
1554 |
f2(i,ny+1)=0.
|
|
|
1555 |
enddo
|
|
|
1556 |
if (ipery.eq.1) then
|
|
|
1557 |
c do periodic boundaries in the x-direction
|
|
|
1558 |
do i=1,nx
|
|
|
1559 |
f2(i,1)=f2(i,ny)
|
|
|
1560 |
f2(i,ny+1)=f2(i,2)
|
|
|
1561 |
enddo
|
|
|
1562 |
endif
|
|
|
1563 |
if (iperx.eq.1) then
|
|
|
1564 |
if (ispol.eq.1) then
|
|
|
1565 |
c do south-pole
|
|
|
1566 |
is=(nx-1)/2
|
|
|
1567 |
do i=1,nx
|
|
|
1568 |
f2(i,1)=-f2(mod(i-1+is,nx)+1,2)
|
|
|
1569 |
enddo
|
|
|
1570 |
endif
|
|
|
1571 |
if (inpol.eq.1) then
|
|
|
1572 |
c do north-pole
|
|
|
1573 |
is=(nx-1)/2
|
|
|
1574 |
do i=1,nx
|
|
|
1575 |
f2(i,ny+1)=-f2(mod(i-1+is,nx)+1,ny)
|
|
|
1576 |
enddo
|
|
|
1577 |
endif
|
|
|
1578 |
endif
|
| 2 |
michaesp |
1579 |
|
| 11 |
michaesp |
1580 |
c compute flux-convergence -> filter
|
|
|
1581 |
if (misdat.eq.0.) then
|
|
|
1582 |
do j=1,ny
|
|
|
1583 |
do i=1,nx
|
|
|
1584 |
af(i,j)=a(i,j)+fh*(f1(i,j)-f1(i+1,j)+f2(i,j)-f2(i,j+1))
|
|
|
1585 |
enddo
|
|
|
1586 |
enddo
|
|
|
1587 |
else
|
|
|
1588 |
do j=1,ny
|
|
|
1589 |
do i=1,nx
|
|
|
1590 |
if (a(i,j).eq.misdat) then
|
|
|
1591 |
af(i,j)=misdat
|
|
|
1592 |
else
|
|
|
1593 |
af(i,j)=a(i,j)+fh*(f1(i,j)-f1(i+1,j)+f2(i,j)-f2(i,j+1))
|
|
|
1594 |
endif
|
|
|
1595 |
enddo
|
|
|
1596 |
enddo
|
|
|
1597 |
endif
|
|
|
1598 |
end
|
| 2 |
michaesp |
1599 |
|
|
|
1600 |
|
|
|
1601 |
|
|
|
1602 |
|
|
|
1603 |
|
|
|
1604 |
|
|
|
1605 |
|
|
|
1606 |
|
|
|
1607 |
|
|
|
1608 |
|
|
|
1609 |
|
|
|
1610 |
|
|
|
1611 |
|
|
|
1612 |
|
|
|
1613 |
|
|
|
1614 |
|
|
|
1615 |
|
|
|
1616 |
|
|
|
1617 |
|
| 11 |
michaesp |
1618 |
|
|
|
1619 |
|
|
|
1620 |
|
|
|
1621 |
|
|
|
1622 |
|
|
|
1623 |
|
|
|
1624 |
|