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michaesp |
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PROGRAM modify_anomaly
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c ******************************************************************************
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c * Read the modified and unmodified PV from the R file and *
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c * perform some non-standard modifications: (a) Change of amplitude, *
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c * (b) Stretching and shrinking along an axis, (c) rotation, or *
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c * (d) change in position.
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c *
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c # modify_anomaly.sh R_20060116_18 shifty=-10,rot=10,stretchy=1.5,rot=-10,shifty=10
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c # modify_anomaly.sh R_20060116_18 fac=2
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c # modify_anomaly.sh R_20060116_18 cex=-30,cey=-30,rot=20
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c * *
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c * Michael Sprenger / Spring, Summer 2007 *
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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/output file and command string
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character*80 pvsrcfile
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character*80 commandstr
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c Grid parameters
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integer nx,ny,nz
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real xmin,ymin,zmin,xmax,ymax,zmax
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real dx,dy,dz
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real mdv
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c 3d fields for calculation of qgPV and Ertel's PV
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real,allocatable,dimension (:,:,:) :: pv1,pv2,ano
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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 Parameters for the transformations
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real cex,cey ! Centre point for rotation
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real angle ! Rotation angle
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c Auxiliary variables
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real zpos
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integer i,j,k
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integer stat
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character*80 varname
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integer n
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real par
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character*80 com
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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*,'* MODIFY_ANOMALY *'
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print*,'********************************************************'
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c Read parameter file
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open(10,file='fort.10')
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read(10,*) pvsrcfile
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read(10,*) commandstr
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close(10)
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print*
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print*,'Input file : ',trim(pvsrcfile)
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print*,'Command : ',trim(commandstr)
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print*
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c Get lat/lon gid parameters from input file
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call read_dim (nx,ny,nz,dx,dy,dz,xmin,ymin,zmin,mdv,
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> pvsrcfile)
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print*,'Read_Dim: nx,ny,nz = ',nx,ny,nz
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print*,' dx,dy,dz = ',dx,dy,dz
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print*,' xmin,ymin,zmin = ',xmin,ymin,zmin
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print*,' mdv = ',mdv
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print*
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c Count from 0, not from 1: consistent with <inv_cart.f>.
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nx=nx-1
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ny=ny-1
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nz=nz-1
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c Allocate memory for modified and non-modified PV
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allocate(pv1 (0:nx,0:ny,0:nz),STAT=stat)
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if (stat.ne.0) print*,'error allocating pv1'
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allocate(pv2 (0:nx,0:ny,0:nz),STAT=stat)
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if (stat.ne.0) print*,'error allocating pv2'
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allocate(ano (0:nx,0:ny,0:nz),STAT=stat)
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if (stat.ne.0) print*,'error allocating ano'
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c Read data from file
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varname='PV'
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call read_inp (pv1,varname,pvsrcfile,
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> nx,ny,nz,dx,dy,dz,xmin,ymin,zmin,mdv)
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varname='PV_FILT'
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call read_inp (pv2,varname,pvsrcfile,
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> nx,ny,nz,dx,dy,dz,xmin,ymin,zmin,mdv)
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c Define the anomaly
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do i=0,nx
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do j=0,ny
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do k=0,nz
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if ( (abs(pv1(i,j,k)-mdv).gt.eps).and.
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> (abs(pv2(i,j,k)-mdv).gt.eps) ) then
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ano(i,j,k)=pv1(i,j,k)-pv2(i,j,k)
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else
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ano(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 -------------------------------------------------------------------------------
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c Modifications
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c -------------------------------------------------------------------------------
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c Set the default values for parameters
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cex = 0.
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cey = 0.
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angle = 0.
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c Set the counter for the command string
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n=1
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c Loop over all commands
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100 continue
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c Extract new command/parameter pair; exit if no new command
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call next_command(commandstr,n,com,par)
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if (com.eq.'nil') goto 200
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print*,trim(com),par
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c Multiply the anomaly by a constant factor
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if (com.eq.'fac') then
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call mod_factor (ano,par,nx,ny,nz,mdv)
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endif
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c Set the centre point (needed for rotations)
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if (com.eq.'cex') then
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cex=par
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endif
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if (com.eq.'cey') then
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cey=par
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endif
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c Rotation around the centrre point
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if (com.eq.'rot') then
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call mod_rotation (ano,par,cex,cey,
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> nx,ny,nz,xmin,ymin,dx,dy,mdv)
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endif
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c Shift in x or in y direction
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if (com.eq.'shiftx') then
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call mod_shift (ano,par,0.,
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> nx,ny,nz,xmin,ymin,dx,dy,mdv)
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endif
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if (com.eq.'shifty') then
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call mod_shift (ano,0.,par,
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> nx,ny,nz,xmin,ymin,dx,dy,mdv)
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endif
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c Stretch/shrink in x or in y direction
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if (com.eq.'stretchx') then
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call mod_stretch (ano,par,1.,
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> nx,ny,nz,xmin,ymin,dx,dy,mdv)
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endif
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if (com.eq.'stretchy') then
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call mod_stretch (ano,1.,par,
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> nx,ny,nz,xmin,ymin,dx,dy,mdv)
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endif
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c Goto next command/parameter pair
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goto 100
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c All commands handled
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200 continue
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c --------------------------------------------------------------------------------
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c Write modified fields
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c --------------------------------------------------------------------------------
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c Build the modified PV distribution from the anomaly
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do i=0,nx
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do j=0,ny
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do k=0,nz
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if ( (abs(pv1(i,j,k)-mdv).gt.eps).and.
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> (abs(ano(i,j,k)-mdv).gt.eps) ) then
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pv2(i,j,k)=pv1(i,j,k)-ano(i,j,k)
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else
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pv2(i,j,k)=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 Write result to netcdf file
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varname='PV_FILT'
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call write_inp (pv2,varname,pvsrcfile,nx,ny,nz)
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c Write the modified anomaly also to the file
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varname='PV_ANOM'
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call write_inp (ano,varname,pvsrcfile,nx,ny,nz)
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end
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c ********************************************************************************
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c * Command handling and transformations *
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c ********************************************************************************
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c --------------------------------------------------------------------------------
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c Extract next command from command string
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c --------------------------------------------------------------------------------
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subroutine next_command (commandstr,n,com,par)
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c Given the command string <commandstr>, extract the next command/parameter pair
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c <com,par> starting at position <n> of the command string.
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implicit none
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c Declaration of subroutine parameters
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character*80 commandstr
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character*80 com
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real par
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integer n
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c Auxiliary variables
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integer i,j,k
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c Check whether end of command line reached
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if (n.ge.80) then
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com='nil'
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par=0.
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goto 120
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endif
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c Set indices to next next command/parameter pair
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i=n
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j=n
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100 if ( (commandstr(j:j).ne.'=').and.(j.lt.80) ) then
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j=j+1
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goto 100
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endif
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k=j+1
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110 if ( (commandstr(k:k).ne.',' ).and.
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> (commandstr(k:k).ne.';' ).and.
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> (commandstr(k:k).ne.' ' ).and.
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> (k .lt.80 ) ) then
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k=k+1
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goto 110
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endif
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c Check whether this is a valid command/parameter pair
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if ( ((j-1).lt.i).or.((k-1).lt.(j+1)) ) then
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com='nil'
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par=0.
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goto 120
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endif
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c Extract tzhe command and the parameter
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com=commandstr(i:j-1)
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read(commandstr(j+1:k-1),*) par
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c Set the counter to the next command/parameter pair
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n=k+1
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c Exit point
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120 continue
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end
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c --------------------------------------------------------------------------------
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c Multiply the anomaly by a factor
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c --------------------------------------------------------------------------------
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subroutine mod_factor (field,factor,nx,ny,nz,mdv)
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c Multiply the anomaly <field> by a constant factor <factor>. The grid and the
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c missing data value are given by <nx,ny,nz,mdv>.
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implicit none
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c Declaration of subroutine parameters
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integer nx,ny,nz
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real field(0:nx,0:ny,0:nz)
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real mdv
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real factor
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c Parameters
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real eps
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parameter (eps=0.01)
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c Auxiliary variables
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integer i,j,k
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c Do the transformation
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do i=0,nx
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do j=0,ny
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do k=0,nz
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if ( (abs(field(i,j,k)-mdv).gt.eps) ) then
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field(i,j,k)=factor*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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end
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c --------------------------------------------------------------------------------
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c Rotate the anomaly
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c --------------------------------------------------------------------------------
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315 |
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subroutine mod_rotation (field,angle,cex,cey,
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> nx,ny,nz,xmin,ymin,dx,dy,mdv)
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318 |
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c Rotate the anomaly <field> in the horizontal by the angle <angle>. The centre
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320 |
c for the rotation is given by <cex,cey>, expressed in rotated longitude, latitude.
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c The grid and the missing data value are given by <nx,ny,nz,xmin,ymin,dx,dy,mdv>.
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323 |
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324 |
implicit none
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325 |
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326 |
c Declaration of subroutine parameters
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327 |
integer nx,ny,nz
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328 |
real field(0:nx,0:ny,0:nz)
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329 |
real xmin,ymin,dx,dy
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330 |
real mdv
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real angle
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real cex,cey
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c Parameters
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335 |
real eps
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parameter (eps=0.01)
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real pi180
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parameter (pi180=3.14159/180.)
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c Auxiliary variables
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integer i,j,k
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real lon,lat,rlon,rlat
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real xmax,ymax
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real tmp1(0:nx,0:ny),tmp2(0:nx,0:ny)
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c Externals
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real int2d
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348 |
external int2d
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c Maximal grid extension
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xmax=xmin+real(nx-1)*dx
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ymax=ymin+real(ny-1)*dy
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c Do the Transformation
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do k=0,nz
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356 |
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c Copy level to 2d array
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358 |
do i=0,nx
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359 |
do j=0,ny
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360 |
tmp1(i,j)=field(i,j,k)
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enddo
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enddo
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c Rotate each grid point
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365 |
do i=0,nx
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do j=0,ny
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367 |
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368 |
c Lon/lat coordinates of grid point
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lon=xmin+real(i)*dx-cex
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lat=ymin+real(j)*dy-cey
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c Rotation
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373 |
rlon = cex + lon*cos(angle*pi180) + lat*sin(angle*pi180)
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rlat = cey - lon*sin(angle*pi180) + lat*cos(angle*pi180)
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375 |
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376 |
c Do the interpolation
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377 |
if ( (rlon.gt.xmin).and.(rlon.lt.xmax).and.
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> (rlat.gt.ymin).and.(rlat.lt.ymax) )
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379 |
> then
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|
380 |
tmp2(i,j)=int2d(tmp1,rlon,rlat,
|
|
|
381 |
> dx,dy,xmin,ymin,nx,ny,mdv)
|
|
|
382 |
else
|
|
|
383 |
tmp2(i,j)=0.
|
|
|
384 |
endif
|
|
|
385 |
|
|
|
386 |
enddo
|
|
|
387 |
enddo
|
|
|
388 |
|
|
|
389 |
c Copy 2d array to level
|
|
|
390 |
do i=0,nx
|
|
|
391 |
do j=0,ny
|
|
|
392 |
field(i,j,k)=tmp2(i,j)
|
|
|
393 |
enddo
|
|
|
394 |
enddo
|
|
|
395 |
|
|
|
396 |
enddo
|
|
|
397 |
|
|
|
398 |
end
|
|
|
399 |
|
|
|
400 |
c --------------------------------------------------------------------------------
|
|
|
401 |
c Shift the anomaly in x and y direction
|
|
|
402 |
c --------------------------------------------------------------------------------
|
|
|
403 |
|
|
|
404 |
subroutine mod_shift (field,shiftx,shifty,
|
|
|
405 |
> nx,ny,nz,xmin,ymin,dx,dy,mdv)
|
|
|
406 |
|
|
|
407 |
c Shift the anomaly <field> in the horizontal by the vector <shiftx,shifty>.
|
|
|
408 |
c The grid and the missing data value are given by <nx,ny,nz,xmin,ymin,dx,dy,mdv>.
|
|
|
409 |
|
|
|
410 |
|
|
|
411 |
implicit none
|
|
|
412 |
|
|
|
413 |
c Declaration of subroutine parameters
|
|
|
414 |
integer nx,ny,nz
|
|
|
415 |
real field(0:nx,0:ny,0:nz)
|
|
|
416 |
real xmin,ymin,dx,dy
|
|
|
417 |
real mdv
|
|
|
418 |
real shiftx,shifty
|
|
|
419 |
|
|
|
420 |
c Parameters
|
|
|
421 |
real eps
|
|
|
422 |
parameter (eps=0.01)
|
|
|
423 |
|
|
|
424 |
c Auxiliary variables
|
|
|
425 |
integer i,j,k
|
|
|
426 |
real lon,lat,rlon,rlat
|
|
|
427 |
real xmax,ymax
|
|
|
428 |
real tmp1(0:nx,0:ny),tmp2(0:nx,0:ny)
|
|
|
429 |
|
|
|
430 |
c Externals
|
|
|
431 |
real int2d
|
|
|
432 |
external int2d
|
|
|
433 |
|
|
|
434 |
c Maximal grid extension
|
|
|
435 |
xmax=xmin+real(nx-1)*dx
|
|
|
436 |
ymax=ymin+real(ny-1)*dy
|
|
|
437 |
|
|
|
438 |
c Do the Transformation
|
|
|
439 |
do k=0,nz
|
|
|
440 |
|
|
|
441 |
c Copy level to 2d array
|
|
|
442 |
do i=0,nx
|
|
|
443 |
do j=0,ny
|
|
|
444 |
tmp1(i,j)=field(i,j,k)
|
|
|
445 |
enddo
|
|
|
446 |
enddo
|
|
|
447 |
|
|
|
448 |
c Rotate each grid point
|
|
|
449 |
do i=0,nx
|
|
|
450 |
do j=0,ny
|
|
|
451 |
|
|
|
452 |
c Lon/lat coordinates of grid point
|
|
|
453 |
lon=xmin+real(i)*dx
|
|
|
454 |
lat=ymin+real(j)*dy
|
|
|
455 |
|
|
|
456 |
c shifted coordinates
|
|
|
457 |
rlon = lon - shiftx
|
|
|
458 |
rlat = lat - shifty
|
|
|
459 |
|
|
|
460 |
c Do the interpolation
|
|
|
461 |
if ( (rlon.gt.xmin).and.(rlon.lt.xmax).and.
|
|
|
462 |
> (rlat.gt.ymin).and.(rlat.lt.ymax) )
|
|
|
463 |
> then
|
|
|
464 |
tmp2(i,j)=int2d(tmp1,rlon,rlat,
|
|
|
465 |
> dx,dy,xmin,ymin,nx,ny,mdv)
|
|
|
466 |
else
|
|
|
467 |
tmp2(i,j)=0.
|
|
|
468 |
endif
|
|
|
469 |
|
|
|
470 |
enddo
|
|
|
471 |
enddo
|
|
|
472 |
|
|
|
473 |
c Copy 2d array to level
|
|
|
474 |
do i=0,nx
|
|
|
475 |
do j=0,ny
|
|
|
476 |
field(i,j,k)=tmp2(i,j)
|
|
|
477 |
enddo
|
|
|
478 |
enddo
|
|
|
479 |
|
|
|
480 |
enddo
|
|
|
481 |
|
|
|
482 |
end
|
|
|
483 |
|
|
|
484 |
c --------------------------------------------------------------------------------
|
|
|
485 |
c Stretch/shrink the anomaly in x and y direction
|
|
|
486 |
c --------------------------------------------------------------------------------
|
|
|
487 |
|
|
|
488 |
subroutine mod_stretch (field,stretchx,stretchy,
|
|
|
489 |
> nx,ny,nz,xmin,ymin,dx,dy,mdv)
|
|
|
490 |
|
|
|
491 |
c Stretch the anomaly <field> in the horizontal by the fatcors <stretchx,stretchy>.
|
|
|
492 |
c The grid and the missing data value are given by <nx,ny,nz,xmin,ymin,dx,dy,mdv>.
|
|
|
493 |
|
|
|
494 |
|
|
|
495 |
implicit none
|
|
|
496 |
|
|
|
497 |
c Declaration of subroutine parameters
|
|
|
498 |
integer nx,ny,nz
|
|
|
499 |
real field(0:nx,0:ny,0:nz)
|
|
|
500 |
real xmin,ymin,dx,dy
|
|
|
501 |
real mdv
|
|
|
502 |
real stretchx,stretchy
|
|
|
503 |
|
|
|
504 |
c Parameters
|
|
|
505 |
real eps
|
|
|
506 |
parameter (eps=0.01)
|
|
|
507 |
|
|
|
508 |
c Auxiliary variables
|
|
|
509 |
integer i,j,k
|
|
|
510 |
real lon,lat,rlon,rlat
|
|
|
511 |
real xmax,ymax
|
|
|
512 |
real tmp1(0:nx,0:ny),tmp2(0:nx,0:ny)
|
|
|
513 |
|
|
|
514 |
c Externals
|
|
|
515 |
real int2d
|
|
|
516 |
external int2d
|
|
|
517 |
|
|
|
518 |
c Maximal grid extension
|
|
|
519 |
xmax=xmin+real(nx-1)*dx
|
|
|
520 |
ymax=ymin+real(ny-1)*dy
|
|
|
521 |
|
|
|
522 |
c Do the Transformation
|
|
|
523 |
do k=0,nz
|
|
|
524 |
|
|
|
525 |
c Copy level to 2d array
|
|
|
526 |
do i=0,nx
|
|
|
527 |
do j=0,ny
|
|
|
528 |
tmp1(i,j)=field(i,j,k)
|
|
|
529 |
enddo
|
|
|
530 |
enddo
|
|
|
531 |
|
|
|
532 |
c Rotate each grid point
|
|
|
533 |
do i=0,nx
|
|
|
534 |
do j=0,ny
|
|
|
535 |
|
|
|
536 |
c Lon/lat coordinates of grid point
|
|
|
537 |
lon=xmin+real(i)*dx
|
|
|
538 |
lat=ymin+real(j)*dy
|
|
|
539 |
|
|
|
540 |
c shifted coordinates
|
|
|
541 |
rlon = 1./stretchx * lon
|
|
|
542 |
rlat = 1./stretchy * lat
|
|
|
543 |
|
|
|
544 |
c Do the interpolation
|
|
|
545 |
if ( (rlon.gt.xmin).and.(rlon.lt.xmax).and.
|
|
|
546 |
> (rlat.gt.ymin).and.(rlat.lt.ymax) )
|
|
|
547 |
> then
|
|
|
548 |
tmp2(i,j)=int2d(tmp1,rlon,rlat,
|
|
|
549 |
> dx,dy,xmin,ymin,nx,ny,mdv)
|
|
|
550 |
else
|
|
|
551 |
tmp2(i,j)=0.
|
|
|
552 |
endif
|
|
|
553 |
|
|
|
554 |
enddo
|
|
|
555 |
enddo
|
|
|
556 |
|
|
|
557 |
c Copy 2d array to level
|
|
|
558 |
do i=0,nx
|
|
|
559 |
do j=0,ny
|
|
|
560 |
field(i,j,k)=tmp2(i,j)
|
|
|
561 |
enddo
|
|
|
562 |
enddo
|
|
|
563 |
|
|
|
564 |
enddo
|
|
|
565 |
|
|
|
566 |
end
|
|
|
567 |
|
|
|
568 |
c ------------------------------------------------------------------------
|
|
|
569 |
c Two-dimensional interpolation
|
|
|
570 |
c ------------------------------------------------------------------------
|
|
|
571 |
|
|
|
572 |
real function int2d(ar,lon,lat,
|
|
|
573 |
> dx,dy,xmin,ymin,nx,ny,mdv)
|
|
|
574 |
|
|
|
575 |
c Interpolate the field <ar(nx,ny)> to the position <lon,lat>. The
|
|
|
576 |
c grid is specified by <dx,dy,xmin,ymin,nx,ny>.
|
|
|
577 |
|
|
|
578 |
implicit none
|
|
|
579 |
|
|
|
580 |
c Declaration of subroutine paramters
|
|
|
581 |
integer nx,ny
|
|
|
582 |
real ar(0:nx,0:ny)
|
|
|
583 |
real lon,lat
|
|
|
584 |
real dx,dy,xmin,ymin
|
|
|
585 |
real mdv
|
|
|
586 |
|
|
|
587 |
c Parameters
|
|
|
588 |
real eps
|
|
|
589 |
parameter (eps=0.01)
|
|
|
590 |
|
|
|
591 |
c Auxiliary variables
|
|
|
592 |
real ri,rj
|
|
|
593 |
integer i,j,ir,ju
|
|
|
594 |
real frac0i,frac0j,frac1i,frac1j
|
|
|
595 |
real tmp,nor
|
|
|
596 |
|
|
|
597 |
c Get index
|
|
|
598 |
ri=(lon-xmin)/dx
|
|
|
599 |
rj=(lat-ymin)/dy
|
|
|
600 |
i=int(ri)
|
|
|
601 |
j=int(rj)
|
|
|
602 |
if ((i.lt.0).or.(i.gt.nx).or.
|
|
|
603 |
> (j.lt.0).or.(j.gt.ny)) then
|
|
|
604 |
print*,'lat/lon interpolation not possible....'
|
|
|
605 |
stop
|
|
|
606 |
endif
|
|
|
607 |
|
|
|
608 |
c Get inidices of left and upper neighbours
|
|
|
609 |
ir=i+1
|
|
|
610 |
if (ir.gt.nx) ir=nx
|
|
|
611 |
ju=j+1
|
|
|
612 |
if (ju.gt.ny) ju=ny
|
|
|
613 |
|
|
|
614 |
c Get the weights for the bilinear interpolation
|
|
|
615 |
frac0i=ri-float(i)
|
|
|
616 |
frac0j=rj-float(j)
|
|
|
617 |
frac1i=1.-frac0i
|
|
|
618 |
frac1j=1.-frac0j
|
|
|
619 |
|
|
|
620 |
c Bilinear interpolation with missing data check
|
|
|
621 |
tmp=0.
|
|
|
622 |
nor=0.
|
|
|
623 |
if ( (abs(ar(i ,j )-mdv).gt.eps) ) then
|
|
|
624 |
tmp = tmp + ar(i ,j ) * frac1i * frac1j
|
|
|
625 |
nor = nor + frac1i * frac1j
|
|
|
626 |
endif
|
|
|
627 |
if ( (abs(ar(i ,ju)-mdv).gt.eps) ) then
|
|
|
628 |
tmp = tmp + ar(i ,ju) * frac1i * frac0j
|
|
|
629 |
nor = nor + frac1i * frac0j
|
|
|
630 |
endif
|
|
|
631 |
if ( (abs(ar(ir,j )-mdv).gt.eps) ) then
|
|
|
632 |
tmp = tmp + ar(ir,j ) * frac0i * frac1j
|
|
|
633 |
nor = nor + frac0i * frac1j
|
|
|
634 |
endif
|
|
|
635 |
if ( (abs(ar(ir,ju)-mdv).gt.eps) ) then
|
|
|
636 |
tmp = tmp + ar(ir,ju) * frac0i * frac0j
|
|
|
637 |
nor = nor + frac0i * frac0j
|
|
|
638 |
endif
|
|
|
639 |
|
|
|
640 |
c Return result
|
|
|
641 |
int2d=tmp/nor
|
|
|
642 |
|
|
|
643 |
end
|
|
|
644 |
|
|
|
645 |
c ********************************************************************************
|
|
|
646 |
c * NETCDF INPUT AND OUTPUT *
|
|
|
647 |
c ********************************************************************************
|
|
|
648 |
|
|
|
649 |
c --------------------------------------------------------------------------------
|
|
|
650 |
c Write input field to netcdf
|
|
|
651 |
c --------------------------------------------------------------------------------
|
|
|
652 |
|
|
|
653 |
SUBROUTINE write_inp (field,fieldname,pvsrcfile,nx,ny,nz)
|
|
|
654 |
|
|
|
655 |
c Read <fieldname> from netcdf file <pvsrcfile> into <field>. The grid is specified
|
|
|
656 |
c by <nx,ny,nz,dx,dy,dz,xmin,ymin,zmin>. A check is performed whether the input
|
|
|
657 |
c files are consitent with this grid.
|
|
|
658 |
|
|
|
659 |
implicit none
|
|
|
660 |
|
|
|
661 |
c Declaration of subroutine parameters
|
|
|
662 |
integer nx,ny,nz
|
|
|
663 |
real field (0:nx,0:ny,0:nz)
|
|
|
664 |
character*80 fieldname
|
|
|
665 |
character*80 pvsrcfile
|
|
|
666 |
|
|
|
667 |
c Auxiliary variables
|
|
|
668 |
integer cdfid,stat
|
|
|
669 |
integer vardim(4)
|
|
|
670 |
real misdat
|
|
|
671 |
real varmin(4),varmax(4),stag(4)
|
|
|
672 |
integer ndimin,outid,i,j,k
|
|
|
673 |
real tmp(0:nx,0:ny,0:nz)
|
|
|
674 |
integer ntimes
|
|
|
675 |
real time(200)
|
|
|
676 |
integer nvars
|
|
|
677 |
character*80 vnam(100),varname
|
|
|
678 |
integer isok
|
|
|
679 |
|
|
|
680 |
c Get grid parameters from PV
|
|
|
681 |
call cdfopn(pvsrcfile,cdfid,stat)
|
|
|
682 |
if (stat.ne.0) goto 998
|
|
|
683 |
call getvars(cdfid,nvars,vnam,stat)
|
|
|
684 |
if (stat.ne.0) goto 998
|
|
|
685 |
isok=0
|
|
|
686 |
varname='PV'
|
|
|
687 |
call check_varok(isok,varname,vnam,nvars)
|
|
|
688 |
if (isok.eq.0) goto 998
|
|
|
689 |
call getdef(cdfid,varname,ndimin,misdat,vardim,
|
|
|
690 |
> varmin,varmax,stag,stat)
|
|
|
691 |
if (stat.ne.0) goto 998
|
|
|
692 |
time(1)=0.
|
|
|
693 |
call gettimes(cdfid,time,ntimes,stat)
|
|
|
694 |
if (stat.ne.0) goto 998
|
|
|
695 |
call clscdf(cdfid,stat)
|
|
|
696 |
if (stat.ne.0) goto 998
|
|
|
697 |
|
|
|
698 |
c Save variables (write definition, if necessary)
|
|
|
699 |
call cdfwopn(pvsrcfile,cdfid,stat)
|
|
|
700 |
if (stat.ne.0) goto 998
|
|
|
701 |
isok=0
|
|
|
702 |
varname=fieldname
|
|
|
703 |
call check_varok(isok,varname,vnam,nvars)
|
|
|
704 |
if (isok.eq.0) then
|
|
|
705 |
call putdef(cdfid,varname,ndimin,misdat,vardim,
|
|
|
706 |
> varmin,varmax,stag,stat)
|
|
|
707 |
if (stat.ne.0) goto 998
|
|
|
708 |
endif
|
|
|
709 |
call putdat(cdfid,varname,time(1),0,field,stat)
|
|
|
710 |
print*,'W ',trim(varname),' ',trim(pvsrcfile)
|
|
|
711 |
if (stat.ne.0) goto 998
|
|
|
712 |
|
|
|
713 |
c Close input netcdf file
|
|
|
714 |
call clscdf(cdfid,stat)
|
|
|
715 |
if (stat.ne.0) goto 998
|
|
|
716 |
|
|
|
717 |
return
|
|
|
718 |
|
|
|
719 |
c Exception handling
|
|
|
720 |
998 print*,'Write_Inp: Problem with input netcdf file... Stop'
|
|
|
721 |
stop
|
|
|
722 |
|
|
|
723 |
end
|
|
|
724 |
|
|
|
725 |
|
|
|
726 |
c --------------------------------------------------------------------------------
|
|
|
727 |
c Read input fields for reference profile
|
|
|
728 |
c --------------------------------------------------------------------------------
|
|
|
729 |
|
|
|
730 |
SUBROUTINE read_inp (field,fieldname,pvsrcfile,
|
|
|
731 |
> nx,ny,nz,dx,dy,dz,xmin,ymin,zmin,mdv)
|
|
|
732 |
|
|
|
733 |
c Read <fieldname> from netcdf file <pvsrcfile> into <field>. The grid is specified
|
|
|
734 |
c by <nx,ny,nz,dx,dy,dz,xmin,ymin,zmin>. A check is performed whether the input
|
|
|
735 |
c files are consitent with this grid. The missing data value is set to <mdv>.
|
|
|
736 |
|
|
|
737 |
implicit none
|
|
|
738 |
|
|
|
739 |
c Declaration of subroutine parameters
|
|
|
740 |
integer nx,ny,nz
|
|
|
741 |
real field(0:nx,0:ny,0:nz)
|
|
|
742 |
character*80 fieldname
|
|
|
743 |
character*80 pvsrcfile
|
|
|
744 |
real dx,dy,dz,xmin,ymin,zmin
|
|
|
745 |
real mdv
|
|
|
746 |
|
|
|
747 |
c Numerical and physical parameters
|
|
|
748 |
real eps
|
|
|
749 |
parameter (eps=0.01)
|
|
|
750 |
|
|
|
751 |
c Auxiliary variables
|
|
|
752 |
integer cdfid,stat,cdfid99
|
|
|
753 |
integer vardim(4)
|
|
|
754 |
real misdat
|
|
|
755 |
real varmin(4),varmax(4),stag(4)
|
|
|
756 |
integer ndimin,outid,i,j,k
|
|
|
757 |
real tmp(nx,ny,nz)
|
|
|
758 |
integer ntimes
|
|
|
759 |
real time(200)
|
|
|
760 |
integer nvars
|
|
|
761 |
character*80 vnam(100),varname
|
|
|
762 |
integer isok
|
|
|
763 |
|
|
|
764 |
c Open the input netcdf file
|
|
|
765 |
call cdfopn(pvsrcfile,cdfid,stat)
|
|
|
766 |
if (stat.ne.0) goto 998
|
|
|
767 |
|
|
|
768 |
c Check whether needed variables are on file
|
|
|
769 |
call getvars(cdfid,nvars,vnam,stat)
|
|
|
770 |
if (stat.ne.0) goto 998
|
|
|
771 |
isok=0
|
|
|
772 |
varname=trim(fieldname)
|
|
|
773 |
call check_varok(isok,varname,vnam,nvars)
|
|
|
774 |
if (isok.eq.0) goto 998
|
|
|
775 |
|
|
|
776 |
c Get the grid parameters from theta
|
|
|
777 |
call getdef(cdfid,varname,ndimin,misdat,vardim,
|
|
|
778 |
> varmin,varmax,stag,stat)
|
|
|
779 |
if (stat.ne.0) goto 998
|
|
|
780 |
time(1)=0.
|
|
|
781 |
call gettimes(cdfid,time,ntimes,stat)
|
|
|
782 |
if (stat.ne.0) goto 998
|
|
|
783 |
|
|
|
784 |
c Check whether grid parameters are consistent
|
|
|
785 |
if ( (vardim(1).ne.(nx+1)).or.
|
|
|
786 |
> (vardim(2).ne.(ny+1)).or.
|
|
|
787 |
> (vardim(3).ne.(nz+1)).or.
|
|
|
788 |
> (abs(varmin(1)-xmin).gt.eps).or.
|
|
|
789 |
> (abs(varmin(2)-ymin).gt.eps).or.
|
|
|
790 |
> (abs(varmin(3)-zmin).gt.eps).or.
|
|
|
791 |
> (abs((varmax(1)-varmin(1))/real(vardim(1)-1)-dx).gt.eps).or.
|
|
|
792 |
> (abs((varmax(2)-varmin(2))/real(vardim(2)-1)-dy).gt.eps).or.
|
|
|
793 |
> (abs((varmax(3)-varmin(3))/real(vardim(3)-1)-dz).gt.eps) )
|
|
|
794 |
>then
|
|
|
795 |
print*,'Input grid inconsitency...'
|
|
|
796 |
print*,' Nx = ',vardim(1),nx+1
|
|
|
797 |
print*,' Ny = ',vardim(2),ny+1
|
|
|
798 |
print*,' Nz = ',vardim(3),nz+1
|
|
|
799 |
print*,' Varminx = ',varmin(1),xmin
|
|
|
800 |
print*,' Varminy = ',varmin(2),ymin
|
|
|
801 |
print*,' Varminz = ',varmin(3),zmin
|
|
|
802 |
print*,' Dx = ',(varmax(1)-varmin(1))/real(nx-1),dx
|
|
|
803 |
print*,' Dy = ',(varmax(2)-varmin(2))/real(ny-1),dy
|
|
|
804 |
print*,' Dz = ',(varmax(3)-varmin(3))/real(nz-1),dz
|
|
|
805 |
goto 998
|
|
|
806 |
endif
|
|
|
807 |
|
|
|
808 |
c Load variables
|
|
|
809 |
call getdef(cdfid,varname,ndimin,misdat,vardim,
|
|
|
810 |
> varmin,varmax,stag,stat)
|
|
|
811 |
if (stat.ne.0) goto 998
|
|
|
812 |
call getdat(cdfid,varname,time(1),0,field,stat)
|
|
|
813 |
print*, 'R ',trim(varname),' ',trim(pvsrcfile)
|
|
|
814 |
if (stat.ne.0) goto 998
|
|
|
815 |
|
|
|
816 |
c Close input netcdf file
|
|
|
817 |
call clscdf(cdfid,stat)
|
|
|
818 |
if (stat.ne.0) goto 998
|
|
|
819 |
|
|
|
820 |
c Set missing data value to <mdv>
|
|
|
821 |
do i=1,nx
|
|
|
822 |
do j=1,ny
|
|
|
823 |
do k=1,nz
|
|
|
824 |
if (abs(field(i,j,k)-misdat).lt.eps) then
|
|
|
825 |
field(i,j,k)=mdv
|
|
|
826 |
endif
|
|
|
827 |
enddo
|
|
|
828 |
enddo
|
|
|
829 |
enddo
|
|
|
830 |
|
|
|
831 |
return
|
|
|
832 |
|
|
|
833 |
c Exception handling
|
|
|
834 |
998 print*,'Read_Inp: Problem with input netcdf file... Stop'
|
|
|
835 |
stop
|
|
|
836 |
|
|
|
837 |
end
|
|
|
838 |
|
|
|
839 |
c --------------------------------------------------------------------------------
|
|
|
840 |
c Check whether variable is found on netcdf file
|
|
|
841 |
c --------------------------------------------------------------------------------
|
|
|
842 |
|
|
|
843 |
subroutine check_varok (isok,varname,varlist,nvars)
|
|
|
844 |
|
|
|
845 |
c Check whether the variable <varname> is in the list <varlist(nvars)>. If this is
|
|
|
846 |
C the case, <isok> is incremented by 1. Otherwise <isok> keeps its value.
|
|
|
847 |
|
|
|
848 |
implicit none
|
|
|
849 |
|
|
|
850 |
c Declaraion of subroutine parameters
|
|
|
851 |
integer isok
|
|
|
852 |
integer nvars
|
|
|
853 |
character*80 varname
|
|
|
854 |
character*80 varlist(nvars)
|
|
|
855 |
|
|
|
856 |
c Auxiliary variables
|
|
|
857 |
integer i
|
|
|
858 |
|
|
|
859 |
c Main
|
|
|
860 |
do i=1,nvars
|
|
|
861 |
if (trim(varname).eq.trim(varlist(i))) isok=isok+1
|
|
|
862 |
enddo
|
|
|
863 |
|
|
|
864 |
end
|
|
|
865 |
|
|
|
866 |
c --------------------------------------------------------------------------------
|
|
|
867 |
c Get grid parameters
|
|
|
868 |
c --------------------------------------------------------------------------------
|
|
|
869 |
|
|
|
870 |
subroutine read_dim (nx,ny,nz,dx,dy,dz,xmin,ymin,zmin,mdv,
|
|
|
871 |
> pvsrcfile)
|
|
|
872 |
|
|
|
873 |
c Get the grid parameters from the variable <THETA> on the input file <pvsrcfile>.
|
|
|
874 |
c The grid parameters are
|
|
|
875 |
c nx,ny,nz : Number of grid points in x, y and z direction
|
|
|
876 |
c xmin,ymin,zmin : Minimum domain coordinates in x, y and z direction
|
|
|
877 |
c xmax,ymax,zmax : Maximal domain coordinates in x, y and z direction
|
|
|
878 |
c dx,dy,dz : Horizontal and vertical resolution
|
|
|
879 |
c Additionally, it is checked whether the vertical grid is equally spaced. If ok,
|
|
|
880 |
c the grid paramters are transformed from lon/lat to distance (in meters)
|
|
|
881 |
|
|
|
882 |
implicit none
|
|
|
883 |
|
|
|
884 |
c Declaration of subroutine parameters
|
|
|
885 |
character*80 pvsrcfile
|
|
|
886 |
integer nx,ny,nz
|
|
|
887 |
real dx,dy,dz
|
|
|
888 |
real xmin,ymin,zmin,xmax,ymax,zmax
|
|
|
889 |
real mdv
|
|
|
890 |
|
|
|
891 |
c Numerical epsilon and other physical/geoemtrical parameters
|
|
|
892 |
real eps
|
|
|
893 |
parameter (eps=0.01)
|
|
|
894 |
|
|
|
895 |
c Auxiliary variables
|
|
|
896 |
integer cdfid,cstid
|
|
|
897 |
integer ierr
|
|
|
898 |
character*80 vnam(100),varname
|
|
|
899 |
integer nvars
|
|
|
900 |
integer isok
|
|
|
901 |
integer vardim(4)
|
|
|
902 |
real misdat
|
|
|
903 |
real varmin(4),varmax(4),stag(4)
|
|
|
904 |
real aklev(1000),bklev(1000),aklay(1000),bklay(1000)
|
|
|
905 |
real dh
|
|
|
906 |
character*80 csn
|
|
|
907 |
integer ndim
|
|
|
908 |
integer i
|
|
|
909 |
|
|
|
910 |
c Get all grid parameters
|
|
|
911 |
call cdfopn(pvsrcfile,cdfid,ierr)
|
|
|
912 |
if (ierr.ne.0) goto 998
|
|
|
913 |
call getvars(cdfid,nvars,vnam,ierr)
|
|
|
914 |
if (ierr.ne.0) goto 998
|
|
|
915 |
isok=0
|
|
|
916 |
varname='PV'
|
|
|
917 |
call check_varok(isok,varname,vnam,nvars)
|
|
|
918 |
if (isok.eq.0) goto 998
|
|
|
919 |
call getcfn(cdfid,csn,ierr)
|
|
|
920 |
if (ierr.ne.0) goto 998
|
|
|
921 |
call cdfopn(csn,cstid,ierr)
|
|
|
922 |
if (ierr.ne.0) goto 998
|
|
|
923 |
call getdef(cdfid,varname,ndim,misdat,vardim,varmin,varmax,
|
|
|
924 |
> stag,ierr)
|
|
|
925 |
if (ierr.ne.0) goto 998
|
|
|
926 |
nx=vardim(1)
|
|
|
927 |
ny=vardim(2)
|
|
|
928 |
nz=vardim(3)
|
|
|
929 |
xmin=varmin(1)
|
|
|
930 |
ymin=varmin(2)
|
|
|
931 |
zmin=varmin(3)
|
|
|
932 |
call getlevs(cstid,nz,aklev,bklev,aklay,bklay,ierr)
|
|
|
933 |
if (ierr.ne.0) goto 998
|
|
|
934 |
call getgrid(cstid,dx,dy,ierr)
|
|
|
935 |
if (ierr.ne.0) goto 998
|
|
|
936 |
xmax=varmax(1)
|
|
|
937 |
ymax=varmax(2)
|
|
|
938 |
zmax=varmax(3)
|
|
|
939 |
dz=(zmax-zmin)/real(nz-1)
|
|
|
940 |
call clscdf(cstid,ierr)
|
|
|
941 |
if (ierr.ne.0) goto 998
|
|
|
942 |
call clscdf(cdfid,ierr)
|
|
|
943 |
if (ierr.ne.0) goto 998
|
|
|
944 |
|
|
|
945 |
c Check whether the grid is equallay spaced in the vertical
|
|
|
946 |
do i=1,nz-1
|
|
|
947 |
dh=aklev(i+1)-aklev(i)
|
|
|
948 |
if (abs(dh-dz).gt.eps) then
|
|
|
949 |
print*,'Aklev: Vertical grid must be equally spaced... Stop'
|
|
|
950 |
print*,(aklev(i),i=1,nz)
|
|
|
951 |
stop
|
|
|
952 |
endif
|
|
|
953 |
dh=aklay(i+1)-aklay(i)
|
|
|
954 |
if (abs(dh-dz).gt.eps) then
|
|
|
955 |
print*,'Aklay: Vertical grid must be equally spaced... Stop'
|
|
|
956 |
print*,(aklay(i),i=1,nz)
|
|
|
957 |
stop
|
|
|
958 |
endif
|
|
|
959 |
enddo
|
|
|
960 |
|
|
|
961 |
c Set missing data value
|
|
|
962 |
mdv=misdat
|
|
|
963 |
|
|
|
964 |
return
|
|
|
965 |
|
|
|
966 |
c Exception handling
|
|
|
967 |
998 print*,'Read_Dim: Problem with input netcdf file... Stop'
|
|
|
968 |
stop
|
|
|
969 |
|
|
|
970 |
end
|