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michaesp |
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c ************************************************************
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c * This package provides input routines to read the wind *
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c * and other fields from IVE necdf files. The routines are *
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c * *
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c * 1) input_open : to open a data file *
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c * 2) input_grid : to read the grid information, including *
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c * the vertical levels *
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c * 3) input_wind : to read the wind components *
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c * 4) input_close : to close an input file *
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c * *
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c * The file is characterised by an filename <filename> and *
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c * a file identifier <fid>. The horizontal grid is given by *
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c * <xmin,xmax,ymin,ymax,dx,dy,nx,ny> where the pole of the *
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c * rotated grid is given by <pollon,pollat>. The vertical *
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c * grid is characterised by the surface pressure <ps> and *
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c * the pressure at staggered <slev> and unstaggered <ulev> *
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c * levels. The number of levels is given by <nz>. Finally, *
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c * the retrieval of the wind <field> with name <fieldname> *
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c * is characterised by a <time> and a missing data value *
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c * <mdv>. *
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c * *
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c * Author: Michael Sprenger, Autumn 2008 *
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c ************************************************************
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c ------------------------------------------------------------
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c Open input file
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c ------------------------------------------------------------
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subroutine input_open (fid,filename)
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c Open the input file with filename <filename> and return the
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c file identifier <fid> for further reference.
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michaesp |
34 |
use netcdf
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michaesp |
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implicit none
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c Declaration of subroutine parameters
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integer fid ! File identifier
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character*80 filename ! Filename
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c Declaration of auxiliary variables
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integer ierr
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michaesp |
45 |
c Open netcdf file
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ierr = NF90_OPEN(TRIM(filename),nf90_nowrite, fid)
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IF ( ierr /= nf90_NoErr ) PRINT *,NF90_STRERROR(ierr)
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michaesp |
49 |
c Exception handling
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return
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end
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michaesp |
53 |
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michaesp |
54 |
c ------------------------------------------------------------
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c Read information about the grid
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c ------------------------------------------------------------
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subroutine input_grid
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> (fid,fieldname,xmin,xmax,ymin,ymax,dx,dy,nx,ny,
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> time,pollon,pollat,p3,ps,nz,ak,bk,stagz,
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> timecheck)
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c Read grid information at <time> from file with identifier <fid>.
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c The horizontal grid is characterized by <xmin,xmax,ymin,ymax,dx,dy>
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c with pole position at <pollon,pollat> and grid dimension <nx,ny>.
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c The 3d arrays <p3(nx,ny,nz)> gives the vertical coordinates, either
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c on the staggered or unstaggered grid (with <stagz> as the flag).
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c The surface pressure is given in <ps(nx,ny)>. If <fid> is negative,
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c only the grid dimensions and grid parameters (xmin...pollat,nz) are
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c determined and returned (this is needed for dynamical allocation of
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c memory).
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michaesp |
73 |
use netcdf
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michaesp |
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implicit none
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c Declaration of subroutine parameters
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integer fid ! File identifier
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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 pollon,pollat ! Longitude and latitude of pole
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real p3(nx,ny,nz) ! Staggered levels
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real ps(nx,ny) ! Surface pressure
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real time ! Time of the grid information
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real ak(nz),bk(nz) ! Ak and Bk for layers or levels
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real stagz ! Vertical staggering (0 or -0.5)
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character*80 fieldname ! Variable from which to take grid info
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character*80 timecheck ! Either 'yes' or 'no'
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c Numerical and physical parameters
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real eps ! Numerical epsilon
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parameter (eps=0.001)
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c Netcdf variables
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integer vardim(4)
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real varmin(4),varmax(4)
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real mdv
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real stag(4)
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integer ndim
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character*80 cstfile
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integer cstid
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integer nvars
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character*80 vars(100)
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michaesp |
105 |
integer dimids (nf90_max_var_dims),dimid
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michaesp |
106 |
character*80 dimname(nf90_max_var_dims)
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michaesp |
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character*80 stdname
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michaesp |
108 |
real,allocatable, dimension (:) :: lon,lat,lev
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real,allocatable, dimension (:) :: times
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real,allocatable, dimension (:,:) :: tmp2
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real,allocatable, dimension (:,:,:) :: tmp3
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michaesp |
112 |
real,allocatable, dimension (:) :: aktmp,bktmp
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michaesp |
113 |
character*80 units
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michaesp |
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character*80 leveltype
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integer nakbktmp
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integer vertical_swap
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michaesp |
117 |
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michaesp |
118 |
c Auxiliary variables
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michaesp |
119 |
integer ierr
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integer i,j,k
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integer isok
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real tmp(200)
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character*80 varname
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real rtime
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michaesp |
125 |
integer varid
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integer cdfid
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integer stat
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real delta
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integer closear
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real maxps,minps
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michaesp |
131 |
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michaesp |
132 |
c ---- Read data from netCDF file as they are ---------------------
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c Set file identifier
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michaesp |
135 |
if (fid.lt.0) then
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michaesp |
136 |
cdfid = -fid
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else
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cdfid = fid
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endif
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michaesp |
140 |
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michaesp |
141 |
c Special handling if 3D pressure is
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if ( fieldname.eq.'P' ) then
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fieldname = 'U'
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endif
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michaesp |
145 |
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michaesp |
146 |
c Get number of dimensions of variable -> ndim
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ierr = NF90_INQ_VARID(cdfid,fieldname,varid)
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148 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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149 |
ierr = nf90_inquire_variable(cdfid, varid, ndims = ndim)
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150 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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if ( ndim.ne.4 ) then
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print*,' ERROR: netCDF variables need to be 4D'
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print*,' ',trim(fieldname)
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stop
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endif
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michaesp |
156 |
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michaesp |
157 |
c Get dimensions -> vardim(1:ndim),dimname(1:ndim)
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ierr = NF90_INQ_VARID(cdfid,fieldname,varid)
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159 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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160 |
ierr = nf90_inquire_variable(cdfid, varid,
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> dimids = dimids(1:ndim))
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162 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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do i=1,ndim
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ierr = nf90_inquire_dimension(cdfid, dimids(i),
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> name = dimname(i) )
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IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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167 |
ierr = nf90_inquire_dimension(cdfid, dimids(i),len=vardim(i))
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168 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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169 |
enddo
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michaesp |
170 |
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michaesp |
171 |
c Get dimension of AK,BK
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varname = 'nhym'
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ierr = NF90_INQ_DIMID(cdfid,varname,dimid)
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174 |
ierr = nf90_inquire_dimension(cdfid, dimid,len=nakbktmp)
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175 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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176 |
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michaesp |
177 |
c Check whether the list of dimensions is OK
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if ( ( dimname(1).ne.'lon' ).or.
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> ( dimname(2).ne.'lat' ).or.
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> ( dimname(3).ne.'lev' ).and.( dimname(3).ne.'lev_2' ).or.
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> ( dimname(4).ne.'time' ) )
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>then
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print*,' ERROR: the dimensions of the variable are not correct'
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print*,' expected -> lon / lat / lev / time'
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print*, ( trim(dimname(i))//' / ',i=1,ndim )
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stop
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endif
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michaesp |
188 |
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michaesp |
189 |
c Allocate memory for reading arrays
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allocate(tmp2(vardim(1),vardim(2)),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array tmp2 ***'
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allocate(tmp3(vardim(1),vardim(2),vardim(3)),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array tmp3 ***'
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allocate(lon(vardim(1)),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array lon ***'
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allocate(lat(vardim(2)),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array lat ***'
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michaesp |
198 |
allocate(lev(vardim(3)),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array lev ***'
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michaesp |
200 |
allocate(times(vardim(4)),stat=stat)
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if (stat.ne.0) print*,'*** error allocating array times ***'
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michaesp |
202 |
allocate(aktmp(nakbktmp),stat=stat)
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michaesp |
203 |
if (stat.ne.0) print*,'*** error allocating array aktmp ***'
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michaesp |
204 |
allocate(bktmp(nakbktmp),stat=stat)
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michaesp |
205 |
if (stat.ne.0) print*,'*** error allocating array bktmp ***'
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michaesp |
206 |
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michaesp |
207 |
c Get domain longitudes, latitudes and levels
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michaesp |
208 |
varname = dimname(1)
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209 |
ierr = NF90_INQ_VARID(cdfid,varname,varid)
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210 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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211 |
ierr = nf90_get_var(cdfid,varid,lon)
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212 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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varname = dimname(2)
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214 |
ierr = NF90_INQ_VARID(cdfid,varname,varid)
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215 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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216 |
ierr = nf90_get_var(cdfid,varid,lat)
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217 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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michaesp |
218 |
varname = dimname(3)
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219 |
ierr = NF90_INQ_VARID(cdfid,varname,varid)
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220 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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221 |
ierr = nf90_get_var(cdfid,varid,lev)
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222 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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michaesp |
223 |
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224 |
c Get ak and bk
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225 |
varname='hyam'
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226 |
ierr = NF90_INQ_VARID(cdfid,varname,varid)
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227 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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michaesp |
228 |
ierr = nf90_get_var(cdfid,varid,aktmp)
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michaesp |
229 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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230 |
varname='hybm'
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231 |
ierr = NF90_INQ_VARID(cdfid,varname,varid)
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232 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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michaesp |
233 |
ierr = nf90_get_var(cdfid,varid,bktmp)
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michaesp |
234 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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michaesp |
235 |
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michaesp |
236 |
c Check that unit of ak is in hPa - if necessary correct it
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237 |
varname='hyam'
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238 |
ierr = NF90_INQ_VARID(cdfid,varname,varid)
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239 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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240 |
ierr = nf90_get_att(cdfid, varid, "units", units)
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241 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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242 |
if ( units.eq.'Pa' ) then
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michaesp |
243 |
do k=1,nakbktmp
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michaesp |
244 |
aktmp(k) = 0.01 * aktmp(k)
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michaesp |
245 |
enddo
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endif
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michaesp |
247 |
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michaesp |
248 |
c Decide whether to swap vertical levels - highest pressure at index 1
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michaesp |
249 |
vertical_swap = 1
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michaesp |
250 |
if ( (aktmp(1) + bktmp(1) * 1000.).gt.
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michaesp |
251 |
> (aktmp(2) + bktmp(2) * 1000.) )
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michaesp |
252 |
>then
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michaesp |
253 |
vertical_swap = 0
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254 |
endif
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255 |
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michaesp |
256 |
c Get time information (check if time is correct)
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257 |
varname = 'time'
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258 |
ierr = NF90_INQ_VARID(cdfid,varname,varid)
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259 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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260 |
ierr = nf90_get_var(cdfid,varid,times)
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261 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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262 |
isok=0
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263 |
do i=1,vardim(4)
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264 |
if (abs(time-times(i)).lt.eps) then
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michaesp |
265 |
isok = 1
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266 |
rtime = times(i)
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michaesp |
267 |
elseif (timecheck.eq.'no') then
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michaesp |
268 |
isok = 1
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269 |
rtime = times(1)
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| 21 |
michaesp |
270 |
endif
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271 |
enddo
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272 |
if ( isok.eq.0 ) then
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273 |
print*,' ERROR: time ',rtime,' not found on netCDF file'
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274 |
stop
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275 |
endif
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michaesp |
276 |
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| 21 |
michaesp |
277 |
c Read surface pressure
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278 |
varname='PS'
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279 |
ierr = NF90_INQ_VARID(cdfid,varname,varid)
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280 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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281 |
ierr = nf90_get_var(cdfid,varid,tmp2)
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282 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
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283 |
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284 |
c Check that surface pressure is in hPa
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| 25 |
michaesp |
285 |
maxps = -1.e19
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286 |
minps = 1.e19
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| 21 |
michaesp |
287 |
do i=1,vardim(1)
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288 |
do j=1,vardim(2)
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289 |
if (tmp2(i,j).gt.maxps) maxps = tmp2(i,j)
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290 |
if (tmp2(i,j).lt.minps) minps = tmp2(i,j)
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291 |
enddo
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292 |
enddo
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293 |
if ( (maxps.gt.1500.).or.(minps.lt.300.) ) then
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294 |
print*,' ERROR: surface pressre PS must be in hPa'
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295 |
print*,' ',maxps,minps
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296 |
stop
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297 |
endif
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298 |
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| 25 |
michaesp |
299 |
c ---- Define output of subroutine --------------------------------
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| 3 |
michaesp |
300 |
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| 27 |
michaesp |
301 |
c If not full list of vertical levels, reduce AK,BK arrays
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302 |
if ( (leveltype.eq.'hybrid_sigma_pressure').and.
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303 |
> (nakbktmp.ne.vardim(3) ) )
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|
304 |
>then
|
|
|
305 |
print*,' WARNING: only subset of vertical levels used...'
|
|
|
306 |
do k=1,vardim(3)
|
|
|
307 |
if ( vertical_swap.eq.1 ) then
|
|
|
308 |
aktmp(k) = aktmp( k+nakbktmp-vardim(3) )
|
|
|
309 |
bktmp(k) = bktmp( k+nakbktmp-vardim(3) )
|
|
|
310 |
endif
|
|
|
311 |
enddo
|
|
|
312 |
endif
|
|
|
313 |
|
| 21 |
michaesp |
314 |
c Set the grid dimensions and constants
|
|
|
315 |
nx = vardim(1)
|
|
|
316 |
ny = vardim(2)
|
|
|
317 |
nz = vardim(3)
|
|
|
318 |
xmin = lon(1)
|
|
|
319 |
ymin = lat(1)
|
|
|
320 |
xmax = lon(nx)
|
|
|
321 |
ymax = lat(ny)
|
|
|
322 |
dx = (xmax-xmin)/real(nx-1)
|
|
|
323 |
dy = (ymax-ymin)/real(ny-1)
|
|
|
324 |
pollon = 0.
|
|
|
325 |
pollat = 90.
|
|
|
326 |
stagz = 0.
|
|
|
327 |
delta = xmax-xmin-360.
|
|
|
328 |
if (abs(delta+dx).lt.eps) then
|
|
|
329 |
xmax = xmax + dx
|
|
|
330 |
nx = nx + 1
|
|
|
331 |
closear = 1
|
|
|
332 |
else
|
|
|
333 |
closear = 0
|
|
|
334 |
endif
|
| 3 |
michaesp |
335 |
|
| 21 |
michaesp |
336 |
c Save the output arrays (if fid>0) - close arrays on request
|
|
|
337 |
if ( fid.gt.0 ) then
|
| 3 |
michaesp |
338 |
|
| 25 |
michaesp |
339 |
c Calculate layer pressures
|
| 27 |
michaesp |
340 |
do i=1,vardim(1)
|
| 25 |
michaesp |
341 |
do j=1,vardim(2)
|
|
|
342 |
do k=1,vardim(3)
|
|
|
343 |
tmp3(i,j,k)=aktmp(k)+bktmp(k)*tmp2(i,j)
|
|
|
344 |
enddo
|
|
|
345 |
enddo
|
| 27 |
michaesp |
346 |
enddo
|
| 25 |
michaesp |
347 |
|
|
|
348 |
c Get PS - close array on demand
|
| 21 |
michaesp |
349 |
do j=1,vardim(2)
|
|
|
350 |
do i=1,vardim(1)
|
|
|
351 |
ps(i,j) = tmp2(i,j)
|
|
|
352 |
enddo
|
|
|
353 |
if (closear.eq.1) ps(vardim(1)+1,j) = ps(1,j)
|
| 3 |
michaesp |
354 |
enddo
|
|
|
355 |
|
| 25 |
michaesp |
356 |
c Get P3 - close array on demand + vertical swap
|
| 21 |
michaesp |
357 |
do j=1,vardim(2)
|
|
|
358 |
do k=1,vardim(3)
|
|
|
359 |
do i=1,vardim(1)
|
| 25 |
michaesp |
360 |
if ( vertical_swap.eq.1 ) then
|
|
|
361 |
p3(i,j,k) = tmp3(i,j,vardim(3)-k+1)
|
|
|
362 |
else
|
|
|
363 |
p3(i,j,k) = tmp3(i,j,k)
|
|
|
364 |
endif
|
| 21 |
michaesp |
365 |
enddo
|
|
|
366 |
if (closear.eq.1) p3(vardim(1)+1,j,k) = p3(1,j,k)
|
|
|
367 |
enddo
|
| 3 |
michaesp |
368 |
enddo
|
| 23 |
michaesp |
369 |
|
| 25 |
michaesp |
370 |
c Get AK,BK - vertical swap on demand
|
| 27 |
michaesp |
371 |
do k=1,vardim(3)
|
| 25 |
michaesp |
372 |
if ( vertical_swap.eq.1 ) then
|
|
|
373 |
ak(k) = aktmp(vardim(3)-k+1)
|
|
|
374 |
bk(k) = bktmp(vardim(3)-k+1)
|
|
|
375 |
endif
|
| 27 |
michaesp |
376 |
enddo
|
| 23 |
michaesp |
377 |
|
| 21 |
michaesp |
378 |
endif
|
| 3 |
michaesp |
379 |
|
| 25 |
michaesp |
380 |
|
| 3 |
michaesp |
381 |
return
|
|
|
382 |
|
|
|
383 |
end
|
|
|
384 |
|
|
|
385 |
c ------------------------------------------------------------
|
|
|
386 |
c Read wind information
|
|
|
387 |
c ------------------------------------------------------------
|
|
|
388 |
|
|
|
389 |
subroutine input_wind (fid,fieldname,field,time,stagz,mdv,
|
|
|
390 |
> xmin,xmax,ymin,ymax,dx,dy,nx,ny,nz,
|
|
|
391 |
> timecheck)
|
|
|
392 |
|
|
|
393 |
c Read the wind component <fieldname> from the file with identifier
|
|
|
394 |
c <fid> and save it in the 3d array <field>. The vertical staggering
|
|
|
395 |
c information is provided in <stagz> and gives the reference to either
|
|
|
396 |
c the layer or level field from <input_grid>. A consistency check is
|
|
|
397 |
c performed to have an agreement with the grid specified by <xmin,xmax,
|
|
|
398 |
c ymin,ymax,dx,dy,nx,ny,nz>.
|
|
|
399 |
|
| 21 |
michaesp |
400 |
use netcdf
|
|
|
401 |
|
| 3 |
michaesp |
402 |
implicit none
|
|
|
403 |
|
|
|
404 |
c Declaration of variables and parameters
|
|
|
405 |
integer fid ! File identifier
|
|
|
406 |
character*80 fieldname ! Name of the wind field
|
|
|
407 |
integer nx,ny,nz ! Dimension of fields
|
|
|
408 |
real field(nx,ny,nz) ! 3d wind field
|
|
|
409 |
real stagz ! Staggering in the z direction
|
|
|
410 |
real mdv ! Missing data flag
|
|
|
411 |
real xmin,xmax,ymin,ymax ! Domain size
|
|
|
412 |
real dx,dy ! Horizontal resolution
|
|
|
413 |
real time ! Time
|
|
|
414 |
character*80 timecheck ! Either 'yes' or 'no'
|
|
|
415 |
|
|
|
416 |
c Numerical and physical parameters
|
|
|
417 |
real eps ! Numerical epsilon
|
|
|
418 |
parameter (eps=0.001)
|
|
|
419 |
real notimecheck ! 'Flag' for no time check
|
|
|
420 |
parameter (notimecheck=7.26537)
|
|
|
421 |
|
|
|
422 |
c Netcdf variables
|
|
|
423 |
integer ierr
|
|
|
424 |
character*80 varname
|
|
|
425 |
integer vardim(4)
|
|
|
426 |
real varmin(4),varmax(4)
|
|
|
427 |
real stag(4)
|
|
|
428 |
integer ndim
|
|
|
429 |
real times(10)
|
|
|
430 |
integer ntimes
|
|
|
431 |
character*80 cstfile
|
|
|
432 |
integer cstid
|
|
|
433 |
real aklay(200),bklay(200),aklev(200),bklev(200)
|
|
|
434 |
real ps(nx,ny)
|
| 21 |
michaesp |
435 |
integer dimids (nf90_max_var_dims)
|
|
|
436 |
character*80 dimname(nf90_max_var_dims)
|
|
|
437 |
integer varid
|
|
|
438 |
integer cdfid
|
| 25 |
michaesp |
439 |
real,allocatable, dimension (:) :: lon,lat,lev
|
| 21 |
michaesp |
440 |
real,allocatable, dimension (:,:) :: tmp2
|
|
|
441 |
real,allocatable, dimension (:,:,:) :: tmp3
|
| 25 |
michaesp |
442 |
real,allocatable, dimension (:) :: aktmp,bktmp
|
|
|
443 |
character*80 leveltype
|
|
|
444 |
integer vertical_swap
|
|
|
445 |
character*80 units
|
|
|
446 |
integer nakbktmp
|
|
|
447 |
integer dimid
|
| 3 |
michaesp |
448 |
|
|
|
449 |
c Auxiliary variables
|
|
|
450 |
integer isok
|
|
|
451 |
integer i,j,k
|
|
|
452 |
integer nz1
|
|
|
453 |
real rtime
|
| 21 |
michaesp |
454 |
integer closear
|
|
|
455 |
integer stat
|
|
|
456 |
real delta
|
| 3 |
michaesp |
457 |
|
| 21 |
michaesp |
458 |
c Get the number of dimensions -> ndim
|
|
|
459 |
ierr = NF90_INQ_VARID(fid,fieldname,varid)
|
|
|
460 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
461 |
ierr = nf90_inquire_variable(fid, varid, ndims = ndim)
|
|
|
462 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
| 19 |
michaesp |
463 |
|
| 21 |
michaesp |
464 |
c Get the dimensions of the arrays -> varid(1:ndim)
|
|
|
465 |
ierr = NF90_INQ_VARID(fid,fieldname,varid)
|
|
|
466 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
467 |
ierr = nf90_inquire_variable(fid, varid,
|
|
|
468 |
> dimids = dimids(1:ndim))
|
|
|
469 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
470 |
do i=1,ndim
|
|
|
471 |
ierr = nf90_inquire_dimension(fid, dimids(i),
|
|
|
472 |
> name = dimname(i) )
|
|
|
473 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
474 |
ierr = nf90_inquire_dimension(fid, dimids(i),len=vardim(i))
|
|
|
475 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
| 3 |
michaesp |
476 |
enddo
|
|
|
477 |
|
| 21 |
michaesp |
478 |
c Check whether the list of dimensions is OK
|
|
|
479 |
if ( ( dimname(1).ne.'lon' ).or.
|
|
|
480 |
> ( dimname(2).ne.'lat' ).or.
|
|
|
481 |
> ( dimname(3).ne.'lev' ).and.( dimname(3).ne.'lev_2' ).or.
|
|
|
482 |
> ( dimname(4).ne.'time' ) )
|
|
|
483 |
>then
|
|
|
484 |
print*,' ERROR: the dimensions of the variable are not correct'
|
|
|
485 |
print*,' expected -> lon / lat / lev / time'
|
|
|
486 |
print*, ( trim(dimname(i))//' / ',i=1,ndim )
|
|
|
487 |
stop
|
|
|
488 |
endif
|
| 3 |
michaesp |
489 |
|
| 25 |
michaesp |
490 |
c Get dimension of AK,BK
|
|
|
491 |
varname = 'nhym'
|
|
|
492 |
ierr = NF90_INQ_DIMID(fid,varname,dimid)
|
|
|
493 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
494 |
ierr = nf90_inquire_dimension(fid, dimid,len=nakbktmp)
|
|
|
495 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
496 |
|
| 21 |
michaesp |
497 |
c Allocate memory for reading arrays - depending on <closear>
|
|
|
498 |
allocate(tmp2(vardim(1),vardim(2)),stat=stat)
|
|
|
499 |
if (stat.ne.0) print*,'*** error allocating array tmp2 ***'
|
|
|
500 |
allocate(tmp3(vardim(1),vardim(2),vardim(3)),stat=stat)
|
|
|
501 |
if (stat.ne.0) print*,'*** error allocating array tmp3 ***'
|
|
|
502 |
allocate(lon(vardim(1)),stat=stat)
|
|
|
503 |
if (stat.ne.0) print*,'*** error allocating array lon ***'
|
|
|
504 |
allocate(lat(vardim(2)),stat=stat)
|
|
|
505 |
if (stat.ne.0) print*,'*** error allocating array lat ***'
|
| 25 |
michaesp |
506 |
allocate(lev(vardim(3)),stat=stat)
|
|
|
507 |
if (stat.ne.0) print*,'*** error allocating array lev ***'
|
|
|
508 |
allocate(aktmp(nakbktmp),stat=stat)
|
|
|
509 |
if (stat.ne.0) print*,'*** error allocating array aktmp ***'
|
|
|
510 |
allocate(bktmp(nakbktmp),stat=stat)
|
|
|
511 |
if (stat.ne.0) print*,'*** error allocating array bktmp ***'
|
| 3 |
michaesp |
512 |
|
| 25 |
michaesp |
513 |
c Get domain boundaries - longitude, latitude, levels
|
| 21 |
michaesp |
514 |
varname = dimname(1)
|
|
|
515 |
ierr = NF90_INQ_VARID(fid,varname,varid)
|
|
|
516 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
517 |
ierr = nf90_get_var(fid,varid,lon)
|
|
|
518 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
519 |
varname = dimname(2)
|
|
|
520 |
ierr = NF90_INQ_VARID(fid,varname,varid)
|
|
|
521 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
522 |
ierr = nf90_get_var(fid,varid,lat)
|
|
|
523 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
| 25 |
michaesp |
524 |
varname = dimname(3)
|
|
|
525 |
ierr = NF90_INQ_VARID(fid,varname,varid)
|
|
|
526 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
527 |
ierr = nf90_get_var(fid,varid,lev)
|
|
|
528 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
| 3 |
michaesp |
529 |
|
| 25 |
michaesp |
530 |
c Get ak and bk
|
|
|
531 |
varname='hyam'
|
|
|
532 |
ierr = NF90_INQ_VARID(fid,varname,varid)
|
|
|
533 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
534 |
ierr = nf90_get_var(fid,varid,aktmp)
|
|
|
535 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
536 |
varname='hybm'
|
|
|
537 |
ierr = NF90_INQ_VARID(fid,varname,varid)
|
|
|
538 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
539 |
ierr = nf90_get_var(fid,varid,bktmp)
|
|
|
540 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
541 |
|
|
|
542 |
c Check that unit of ak is in hPa - if necessary correct it
|
|
|
543 |
varname='hyam'
|
|
|
544 |
ierr = NF90_INQ_VARID(fid,varname,varid)
|
|
|
545 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
546 |
ierr = nf90_get_att(fid, varid, "units", units)
|
|
|
547 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
548 |
if ( units.eq.'Pa' ) then
|
|
|
549 |
do k=1,nakbktmp
|
|
|
550 |
aktmp(k) = 0.01 * aktmp(k)
|
|
|
551 |
enddo
|
|
|
552 |
endif
|
|
|
553 |
|
|
|
554 |
c Decide whether to swap vertical levels
|
|
|
555 |
vertical_swap = 1
|
| 27 |
michaesp |
556 |
if ( (aktmp(1) + bktmp(1) * 1000.).gt.
|
|
|
557 |
> (aktmp(2) + bktmp(2) * 1000.) )
|
|
|
558 |
>then
|
| 25 |
michaesp |
559 |
vertical_swap = 0
|
|
|
560 |
endif
|
|
|
561 |
|
| 21 |
michaesp |
562 |
c Read data
|
|
|
563 |
ierr = NF90_INQ_VARID(fid,fieldname,varid)
|
|
|
564 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
565 |
ierr = nf90_get_var(fid,varid,tmp3)
|
|
|
566 |
IF(ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
567 |
|
| 3 |
michaesp |
568 |
c If the field is 2D, expand it to 3D - simple handling of 2D tracing
|
|
|
569 |
if ( vardim(3).eq.1 ) then
|
| 21 |
michaesp |
570 |
do i=1,vardim(1)
|
|
|
571 |
do j=1,vardim(2)
|
|
|
572 |
do k=1,vardim(3)
|
|
|
573 |
tmp3(i,j,k) = tmp3(i,j,1)
|
| 3 |
michaesp |
574 |
enddo
|
|
|
575 |
enddo
|
|
|
576 |
enddo
|
|
|
577 |
endif
|
|
|
578 |
|
| 25 |
michaesp |
579 |
c Decide whether to close arrays
|
| 21 |
michaesp |
580 |
delta = varmax(1)-varmin(1)-360.
|
|
|
581 |
if (abs(delta+dx).lt.eps) then
|
|
|
582 |
closear = 1
|
|
|
583 |
else
|
|
|
584 |
closear = 0
|
|
|
585 |
endif
|
| 3 |
michaesp |
586 |
|
| 25 |
michaesp |
587 |
c Save output array - close array and swap on demand
|
| 21 |
michaesp |
588 |
do j=1,vardim(2)
|
|
|
589 |
do k=1,vardim(3)
|
|
|
590 |
do i=1,vardim(1)
|
| 25 |
michaesp |
591 |
if ( vertical_swap.eq.1 ) then
|
|
|
592 |
field(i,j,k) = tmp3(i,j,vardim(3)-k+1)
|
|
|
593 |
else
|
|
|
594 |
field(i,j,k) = tmp3(i,j,k)
|
|
|
595 |
endif
|
| 21 |
michaesp |
596 |
enddo
|
|
|
597 |
if (closear.eq.1) field(vardim(1)+1,j,k) = field(1,j,k)
|
|
|
598 |
enddo
|
|
|
599 |
enddo
|
|
|
600 |
|
|
|
601 |
c Exit point
|
| 3 |
michaesp |
602 |
return
|
| 21 |
michaesp |
603 |
|
| 3 |
michaesp |
604 |
end
|
|
|
605 |
|
|
|
606 |
c ------------------------------------------------------------
|
|
|
607 |
c Close input file
|
|
|
608 |
c ------------------------------------------------------------
|
|
|
609 |
|
|
|
610 |
subroutine input_close(fid)
|
|
|
611 |
|
|
|
612 |
c Close the input file with file identifier <fid>.
|
|
|
613 |
|
| 21 |
michaesp |
614 |
use netcdf
|
|
|
615 |
|
| 3 |
michaesp |
616 |
implicit none
|
|
|
617 |
|
|
|
618 |
c Declaration of subroutine parameters
|
|
|
619 |
integer fid
|
|
|
620 |
|
|
|
621 |
c Auxiliary variables
|
|
|
622 |
integer ierr
|
|
|
623 |
|
|
|
624 |
c Close file
|
| 21 |
michaesp |
625 |
ierr = NF90_CLOSE(fid)
|
|
|
626 |
IF( ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
627 |
|
|
|
628 |
end
|
|
|
629 |
|
|
|
630 |
c ------------------------------------------------------------
|
|
|
631 |
c Get a list of variables on netCDF file
|
|
|
632 |
c ------------------------------------------------------------
|
|
|
633 |
|
|
|
634 |
subroutine input_getvars(fid,vnam,nvars)
|
|
|
635 |
|
|
|
636 |
c List of variables on netCDF file
|
|
|
637 |
|
|
|
638 |
use netcdf
|
|
|
639 |
|
|
|
640 |
implicit none
|
|
|
641 |
|
|
|
642 |
c Declaration of subroutine parameters
|
|
|
643 |
integer fid
|
|
|
644 |
integer nvars
|
|
|
645 |
character*80 vnam(200)
|
|
|
646 |
|
|
|
647 |
c Auxiliary variables
|
|
|
648 |
integer ierr
|
|
|
649 |
integer i
|
|
|
650 |
integer nDims,nGlobalAtts,unlimdimid
|
|
|
651 |
|
|
|
652 |
ierr = nf90_inquire(fid, nDims, nVars, nGlobalAtts, unlimdimid)
|
|
|
653 |
IF( ierr /= nf90_NoErr) PRINT *,NF90_STRERROR(ierr)
|
|
|
654 |
|
|
|
655 |
do i=1,nVars
|
|
|
656 |
ierr = nf90_inquire_variable(fid, i, name = vnam(i))
|
|
|
657 |
enddo
|
| 3 |
michaesp |
658 |
|
|
|
659 |
end
|