| 3 |
michaesp |
1 |
c ************************************************************
|
|
|
2 |
c * This package provides input routines to read the wind *
|
|
|
3 |
c * and other fields from IVE necdf files. The routines are *
|
|
|
4 |
c * *
|
|
|
5 |
c * 1) input_open : to open a data file *
|
|
|
6 |
c * 2) input_grid : to read the grid information, including *
|
|
|
7 |
c * the vertical levels *
|
|
|
8 |
c * 3) input_wind : to read the wind components *
|
|
|
9 |
c * 4) input_close : to close an input file *
|
|
|
10 |
c * *
|
|
|
11 |
c * The file is characterised by an filename <filename> and *
|
|
|
12 |
c * a file identifier <fid>. The horizontal grid is given by *
|
|
|
13 |
c * <xmin,xmax,ymin,ymax,dx,dy,nx,ny> where the pole of the *
|
|
|
14 |
c * rotated grid is given by <pollon,pollat>. The vertical *
|
|
|
15 |
c * grid is characterised by the surface pressure <ps> and *
|
|
|
16 |
c * the pressure at staggered <slev> and unstaggered <ulev> *
|
|
|
17 |
c * levels. The number of levels is given by <nz>. Finally, *
|
|
|
18 |
c * the retrieval of the wind <field> with name <fieldname> *
|
|
|
19 |
c * is characterised by a <time> and a missing data value *
|
|
|
20 |
c * <mdv>. *
|
|
|
21 |
c * *
|
|
|
22 |
c * Author: Michael Sprenger, Autumn 2008 *
|
|
|
23 |
c ************************************************************
|
|
|
24 |
|
|
|
25 |
c ------------------------------------------------------------
|
|
|
26 |
c Open input file
|
|
|
27 |
c ------------------------------------------------------------
|
|
|
28 |
|
|
|
29 |
subroutine input_open (fid,filename)
|
|
|
30 |
|
|
|
31 |
c Open the input file with filename <filename> and return the
|
|
|
32 |
c file identifier <fid> for further reference.
|
|
|
33 |
|
|
|
34 |
implicit none
|
|
|
35 |
|
|
|
36 |
c Declaration of subroutine parameters
|
|
|
37 |
integer fid ! File identifier
|
|
|
38 |
character*80 filename ! Filename
|
|
|
39 |
|
|
|
40 |
c Declaration of auxiliary variables
|
|
|
41 |
integer ierr
|
|
|
42 |
|
| 44 |
michaesp |
43 |
c Open IVE netcdf file
|
|
|
44 |
call cdfopn(filename,fid,ierr)
|
|
|
45 |
if (ierr.ne.0) goto 900
|
|
|
46 |
|
| 3 |
michaesp |
47 |
c Exception handling
|
|
|
48 |
return
|
| 44 |
michaesp |
49 |
|
|
|
50 |
900 print*,'Cannot open input file ',trim(filename)
|
|
|
51 |
stop
|
| 3 |
michaesp |
52 |
|
|
|
53 |
end
|
| 44 |
michaesp |
54 |
|
|
|
55 |
|
| 3 |
michaesp |
56 |
c ------------------------------------------------------------
|
|
|
57 |
c Read information about the grid
|
|
|
58 |
c ------------------------------------------------------------
|
|
|
59 |
|
|
|
60 |
subroutine input_grid
|
|
|
61 |
> (fid,fieldname,xmin,xmax,ymin,ymax,dx,dy,nx,ny,
|
|
|
62 |
> time,pollon,pollat,p3,ps,nz,ak,bk,stagz,
|
|
|
63 |
> timecheck)
|
|
|
64 |
|
|
|
65 |
c Read grid information at <time> from file with identifier <fid>.
|
|
|
66 |
c The horizontal grid is characterized by <xmin,xmax,ymin,ymax,dx,dy>
|
|
|
67 |
c with pole position at <pollon,pollat> and grid dimension <nx,ny>.
|
|
|
68 |
c The 3d arrays <p3(nx,ny,nz)> gives the vertical coordinates, either
|
|
|
69 |
c on the staggered or unstaggered grid (with <stagz> as the flag).
|
|
|
70 |
c The surface pressure is given in <ps(nx,ny)>. If <fid> is negative,
|
|
|
71 |
c only the grid dimensions and grid parameters (xmin...pollat,nz) are
|
|
|
72 |
c determined and returned (this is needed for dynamical allocation of
|
|
|
73 |
c memory).
|
|
|
74 |
|
|
|
75 |
implicit none
|
|
|
76 |
|
|
|
77 |
c Declaration of subroutine parameters
|
|
|
78 |
integer fid ! File identifier
|
|
|
79 |
real xmin,xmax,ymin,ymax ! Domain size
|
|
|
80 |
real dx,dy ! Horizontal resolution
|
|
|
81 |
integer nx,ny,nz ! Grid dimensions
|
|
|
82 |
real pollon,pollat ! Longitude and latitude of pole
|
|
|
83 |
real p3(nx,ny,nz) ! Staggered levels
|
|
|
84 |
real ps(nx,ny) ! Surface pressure
|
|
|
85 |
real time ! Time of the grid information
|
|
|
86 |
real ak(nz),bk(nz) ! Ak and Bk for layers or levels
|
|
|
87 |
real stagz ! Vertical staggering (0 or -0.5)
|
|
|
88 |
character*80 fieldname ! Variable from which to take grid info
|
|
|
89 |
character*80 timecheck ! Either 'yes' or 'no'
|
|
|
90 |
|
|
|
91 |
c Numerical and physical parameters
|
|
|
92 |
real eps ! Numerical epsilon
|
|
|
93 |
parameter (eps=0.001)
|
|
|
94 |
|
|
|
95 |
c Netcdf variables
|
|
|
96 |
integer vardim(4)
|
|
|
97 |
real varmin(4),varmax(4)
|
|
|
98 |
real mdv
|
|
|
99 |
real stag(4)
|
|
|
100 |
integer ndim
|
|
|
101 |
character*80 cstfile
|
|
|
102 |
integer cstid
|
| 44 |
michaesp |
103 |
real times(10)
|
|
|
104 |
integer ntimes
|
|
|
105 |
real aklay(nz),bklay(nz),aklev(nz),bklev(nz)
|
| 3 |
michaesp |
106 |
integer nvars
|
|
|
107 |
character*80 vars(100)
|
|
|
108 |
|
| 44 |
michaesp |
109 |
c Auxiliary varaibles
|
| 3 |
michaesp |
110 |
integer ierr
|
|
|
111 |
integer i,j,k
|
|
|
112 |
integer isok
|
|
|
113 |
real tmp(200)
|
|
|
114 |
character*80 varname
|
|
|
115 |
real rtime
|
| 44 |
michaesp |
116 |
integer is2d
|
|
|
117 |
integer plev
|
| 3 |
michaesp |
118 |
|
| 44 |
michaesp |
119 |
c Init the flag for 2D variables - assume a 3D field
|
|
|
120 |
is2d = 0
|
| 25 |
michaesp |
121 |
|
| 44 |
michaesp |
122 |
c Init the flag for pressure levels (PS is not needed)
|
|
|
123 |
plev = 0
|
|
|
124 |
|
|
|
125 |
c Inquire dimensions and grid constants if <fid> is negative
|
| 3 |
michaesp |
126 |
if (fid.lt.0) then
|
|
|
127 |
|
| 44 |
michaesp |
128 |
c Get grid info for the selected variable
|
|
|
129 |
if ( fieldname.eq.'PLEV' ) then
|
|
|
130 |
varname = 'PS'
|
|
|
131 |
stagz = 0.
|
|
|
132 |
call getdef(-fid,varname,ndim,mdv,vardim,
|
|
|
133 |
> varmin,varmax,stag,ierr)
|
|
|
134 |
if (ierr.ne.0) goto 900
|
|
|
135 |
call getcfn(-fid,cstfile,ierr)
|
|
|
136 |
if (ierr.ne.0) goto 903
|
|
|
137 |
call cdfopn(cstfile,cstid,ierr)
|
|
|
138 |
if (ierr.ne.0) goto 903
|
|
|
139 |
call getlevs(cstid,vardim(3),tmp,tmp,tmp,tmp,ierr)
|
|
|
140 |
if (ierr.ne.0) goto 903
|
|
|
141 |
call clscdf(cstid,ierr)
|
|
|
142 |
if (ierr.ne.0) goto 903
|
|
|
143 |
|
|
|
144 |
elseif ( ( fieldname.eq.'PLAY' ).or.( fieldname.eq.'P' ) ) then
|
|
|
145 |
varname = 'PS'
|
|
|
146 |
stagz = -0.5
|
|
|
147 |
call getdef(-fid,varname,ndim,mdv,vardim,
|
|
|
148 |
> varmin,varmax,stag,ierr)
|
|
|
149 |
if (ierr.ne.0) goto 900
|
|
|
150 |
call getcfn(-fid,cstfile,ierr)
|
|
|
151 |
if (ierr.ne.0) goto 903
|
|
|
152 |
call cdfopn(cstfile,cstid,ierr)
|
|
|
153 |
if (ierr.ne.0) goto 903
|
|
|
154 |
call getlevs(cstid,vardim(3),tmp,tmp,tmp,tmp,ierr)
|
|
|
155 |
if (ierr.ne.0) goto 903
|
|
|
156 |
call clscdf(cstid,ierr)
|
|
|
157 |
if (ierr.ne.0) goto 903
|
| 3 |
michaesp |
158 |
|
| 44 |
michaesp |
159 |
else
|
|
|
160 |
varname = fieldname
|
|
|
161 |
call getdef(-fid,varname,ndim,mdv,vardim,
|
|
|
162 |
> varmin,varmax,stag,ierr)
|
|
|
163 |
if (ierr.ne.0) goto 900
|
|
|
164 |
|
|
|
165 |
endif
|
| 3 |
michaesp |
166 |
|
| 44 |
michaesp |
167 |
c Set the grid dimensions and constants - vardim(3) is taken from constants file
|
|
|
168 |
nx = vardim(1)
|
|
|
169 |
ny = vardim(2)
|
|
|
170 |
nz = vardim(3)
|
|
|
171 |
xmin = varmin(1)
|
|
|
172 |
ymin = varmin(2)
|
|
|
173 |
xmax = varmax(1)
|
|
|
174 |
ymax = varmax(2)
|
|
|
175 |
dx = (xmax-xmin)/real(nx-1)
|
|
|
176 |
dy = (ymax-ymin)/real(ny-1)
|
| 3 |
michaesp |
177 |
|
| 44 |
michaesp |
178 |
c Get pole position - if no constants file available, set default pole
|
|
|
179 |
call getcfn(-fid,cstfile,ierr)
|
|
|
180 |
if (ierr.eq.0) then
|
|
|
181 |
call cdfopn(cstfile,cstid,ierr)
|
|
|
182 |
if (ierr.ne.0) goto 903
|
|
|
183 |
call getpole(cstid,pollon,pollat,ierr)
|
|
|
184 |
if (ierr.ne.0) goto 903
|
|
|
185 |
call clscdf(cstid,ierr)
|
|
|
186 |
if (ierr.ne.0) goto 903
|
|
|
187 |
else
|
|
|
188 |
pollon = 0.
|
|
|
189 |
pollat = 90.
|
|
|
190 |
endif
|
| 25 |
michaesp |
191 |
|
| 44 |
michaesp |
192 |
c Get non-constant grid parameters (surface pressure and vertical grid)
|
|
|
193 |
else
|
|
|
194 |
|
|
|
195 |
c Special handling for fieldname 'P.ML' -> in this case the fields
|
|
|
196 |
c P and PS are available on the data file and can be read in. There
|
|
|
197 |
c is no need to reconstruct it from PS,AK and BK. This mode is
|
|
|
198 |
c used for model-level (2D) trajectories
|
|
|
199 |
if ( fieldname.eq.'P.ML' ) then
|
| 3 |
michaesp |
200 |
|
| 44 |
michaesp |
201 |
c Get the right time to read
|
|
|
202 |
call gettimes(fid,times,ntimes,ierr)
|
|
|
203 |
if (ierr.ne.0) goto 901
|
|
|
204 |
isok=0
|
|
|
205 |
do i=1,ntimes
|
|
|
206 |
if (abs(time-times(i)).lt.eps) then
|
|
|
207 |
isok = 1
|
|
|
208 |
rtime = times(i)
|
|
|
209 |
elseif (timecheck.eq.'no') then
|
|
|
210 |
isok = 1
|
|
|
211 |
rtime = times(1)
|
|
|
212 |
endif
|
|
|
213 |
enddo
|
| 29 |
michaesp |
214 |
|
| 44 |
michaesp |
215 |
c Read surface pressure and 3D pressure
|
|
|
216 |
varname='PS'
|
|
|
217 |
call getdat(fid,varname,rtime,0,ps,ierr)
|
|
|
218 |
if (ierr.ne.0) goto 904
|
|
|
219 |
varname='P'
|
|
|
220 |
call getdat(fid,varname,rtime,0,p3,ierr)
|
|
|
221 |
if (ierr.ne.0) goto 904
|
| 19 |
michaesp |
222 |
|
| 44 |
michaesp |
223 |
c Set MDV to 1050. - otherwise interpolation routines don't work
|
|
|
224 |
do i=1,nx
|
|
|
225 |
do j=1,ny
|
|
|
226 |
do k=1,nz
|
|
|
227 |
if ( p3(i,j,k).lt.0. ) p3(i,j,k) = 1050.
|
|
|
228 |
enddo
|
|
|
229 |
enddo
|
|
|
230 |
enddo
|
| 19 |
michaesp |
231 |
|
| 44 |
michaesp |
232 |
c Don't care about other stuff - finish subroutine
|
|
|
233 |
goto 800
|
| 19 |
michaesp |
234 |
|
| 29 |
michaesp |
235 |
endif
|
|
|
236 |
|
| 44 |
michaesp |
237 |
c Get full grid info - in particular staggering flag; set flag for 2D tracing
|
|
|
238 |
if ( fieldname.eq.'PLEV' ) then
|
|
|
239 |
varname = 'PS'
|
|
|
240 |
stagz = 0.
|
|
|
241 |
call getdef(fid,varname,ndim,mdv,vardim,
|
|
|
242 |
> varmin,varmax,stag,ierr)
|
|
|
243 |
if (ierr.ne.0) goto 900
|
|
|
244 |
call getcfn(fid,cstfile,ierr)
|
|
|
245 |
if (ierr.ne.0) goto 903
|
|
|
246 |
call cdfopn(cstfile,cstid,ierr)
|
|
|
247 |
if (ierr.ne.0) goto 903
|
|
|
248 |
call getlevs(cstid,vardim(3),tmp,tmp,tmp,tmp,ierr)
|
|
|
249 |
if (ierr.ne.0) goto 903
|
|
|
250 |
call clscdf(cstid,ierr)
|
|
|
251 |
if (ierr.ne.0) goto 903
|
|
|
252 |
|
|
|
253 |
elseif ( ( fieldname.eq.'PLAY' ).or.( fieldname.eq.'P' ) ) then
|
|
|
254 |
varname = 'PS'
|
|
|
255 |
stagz = -0.5
|
|
|
256 |
call getdef(fid,varname,ndim,mdv,vardim,
|
|
|
257 |
> varmin,varmax,stag,ierr)
|
|
|
258 |
if (ierr.ne.0) goto 900
|
|
|
259 |
call getcfn(fid,cstfile,ierr)
|
|
|
260 |
if (ierr.ne.0) goto 903
|
|
|
261 |
call cdfopn(cstfile,cstid,ierr)
|
|
|
262 |
if (ierr.ne.0) goto 903
|
|
|
263 |
call getlevs(cstid,vardim(3),tmp,tmp,tmp,tmp,ierr)
|
|
|
264 |
if (ierr.ne.0) goto 903
|
|
|
265 |
call clscdf(cstid,ierr)
|
|
|
266 |
if (ierr.ne.0) goto 903
|
| 25 |
michaesp |
267 |
|
| 44 |
michaesp |
268 |
else
|
|
|
269 |
varname=fieldname
|
|
|
270 |
call getdef(fid,varname,ndim,mdv,vardim,
|
|
|
271 |
> varmin,varmax,stag,ierr)
|
|
|
272 |
if (ierr.ne.0) goto 900
|
|
|
273 |
if (vardim(3).eq.1) is2d = 1
|
|
|
274 |
endif
|
|
|
275 |
|
|
|
276 |
c Get time information (check if time is correct)
|
|
|
277 |
call gettimes(fid,times,ntimes,ierr)
|
|
|
278 |
if (ierr.ne.0) goto 901
|
|
|
279 |
isok=0
|
|
|
280 |
do i=1,ntimes
|
|
|
281 |
if (abs(time-times(i)).lt.eps) then
|
| 3 |
michaesp |
282 |
isok = 1
|
|
|
283 |
rtime = times(i)
|
| 44 |
michaesp |
284 |
elseif (timecheck.eq.'no') then
|
| 3 |
michaesp |
285 |
isok = 1
|
|
|
286 |
rtime = times(1)
|
| 44 |
michaesp |
287 |
endif
|
|
|
288 |
enddo
|
|
|
289 |
if ( isok.eq.0) goto 905
|
| 3 |
michaesp |
290 |
|
| 44 |
michaesp |
291 |
c If 2D tracing requested: take dummay values for PS, AKLEV,BKLEV,AKLAY,BKLAY
|
|
|
292 |
if ( is2d.eq.1 ) then
|
|
|
293 |
|
|
|
294 |
do i=1,nx
|
|
|
295 |
do j=1,ny
|
|
|
296 |
ps(i,j) = 1050.
|
|
|
297 |
enddo
|
|
|
298 |
enddo
|
|
|
299 |
|
|
|
300 |
do k=1,nz
|
|
|
301 |
aklev(k) = 0.
|
|
|
302 |
bklev(k) = real(nz-k)/real(nz-1)
|
|
|
303 |
aklay(k) = 0.
|
|
|
304 |
bklay(k) = real(nz-k)/real(nz-1)
|
|
|
305 |
enddo
|
| 21 |
michaesp |
306 |
|
| 44 |
michaesp |
307 |
c 3D tracing - read PS, AKLEV,BKLEV,AKLAY;BKLAY
|
|
|
308 |
else
|
| 3 |
michaesp |
309 |
|
| 44 |
michaesp |
310 |
c Read the level coefficients from the constants file
|
|
|
311 |
call getcfn(fid,cstfile,ierr)
|
|
|
312 |
if (ierr.ne.0) goto 903
|
|
|
313 |
call cdfopn(cstfile,cstid,ierr)
|
|
|
314 |
if (ierr.ne.0) goto 903
|
|
|
315 |
call getlevs(cstid,vardim(3),aklev,bklev,aklay,bklay,ierr)
|
|
|
316 |
if (ierr.ne.0) goto 903
|
|
|
317 |
call clscdf(cstid,ierr)
|
|
|
318 |
if (ierr.ne.0) goto 903
|
| 27 |
michaesp |
319 |
|
| 44 |
michaesp |
320 |
c Check whether PS is needed to get the 3d pressure field
|
|
|
321 |
plev = 1
|
|
|
322 |
do i=1,nz
|
|
|
323 |
if ( (abs(stagz).lt.eps).and.(abs(bklev(i)).gt.eps) ) then
|
|
|
324 |
plev = 0
|
|
|
325 |
endif
|
|
|
326 |
if ( (abs(stagz).gt.eps).and.(abs(bklay(i)).gt.eps) ) then
|
|
|
327 |
plev = 0
|
|
|
328 |
endif
|
|
|
329 |
enddo
|
| 3 |
michaesp |
330 |
|
| 44 |
michaesp |
331 |
c Read surface pressure if needed
|
|
|
332 |
if ( plev.ne.1 ) then
|
|
|
333 |
varname='PS'
|
|
|
334 |
call getdat(fid,varname,rtime,0,ps,ierr)
|
|
|
335 |
if (ierr.ne.0) goto 904
|
|
|
336 |
else
|
|
|
337 |
do i=1,nx
|
|
|
338 |
do j=1,ny
|
|
|
339 |
ps(i,j) = 1000.
|
|
|
340 |
enddo
|
|
|
341 |
enddo
|
|
|
342 |
endif
|
| 3 |
michaesp |
343 |
|
| 29 |
michaesp |
344 |
endif
|
| 25 |
michaesp |
345 |
|
| 44 |
michaesp |
346 |
c Calculate layer and level pressures
|
|
|
347 |
do i=1,nx
|
|
|
348 |
do j=1,ny
|
|
|
349 |
do k=1,nz
|
|
|
350 |
if ( abs(stagz).lt.eps ) then
|
|
|
351 |
p3(i,j,k)=aklev(k)+bklev(k)*ps(i,j)
|
|
|
352 |
else
|
|
|
353 |
p3(i,j,k)=aklay(k)+bklay(k)*ps(i,j)
|
|
|
354 |
endif
|
|
|
355 |
enddo
|
|
|
356 |
enddo
|
| 3 |
michaesp |
357 |
enddo
|
|
|
358 |
|
| 44 |
michaesp |
359 |
c Set the ak and bk for the vertical grid
|
|
|
360 |
do k=1,nz
|
|
|
361 |
if ( abs(stagz).lt.eps ) then
|
|
|
362 |
ak(k)=aklev(k)
|
|
|
363 |
bk(k)=bklev(k)
|
|
|
364 |
else
|
|
|
365 |
ak(k)=aklay(k)
|
|
|
366 |
bk(k)=bklay(k)
|
|
|
367 |
endif
|
| 3 |
michaesp |
368 |
enddo
|
| 23 |
michaesp |
369 |
|
| 21 |
michaesp |
370 |
endif
|
| 44 |
michaesp |
371 |
|
|
|
372 |
c Exit point for subroutine
|
|
|
373 |
800 continue
|
| 3 |
michaesp |
374 |
return
|
|
|
375 |
|
| 44 |
michaesp |
376 |
c Exception handling
|
|
|
377 |
900 print*,'Cannot retrieve grid dimension from ',fid
|
|
|
378 |
stop
|
|
|
379 |
901 print*,'Cannot retrieve grid parameters from ',fid
|
|
|
380 |
stop
|
|
|
381 |
902 print*,'Grid inconsistency detected for ',fid
|
|
|
382 |
stop
|
|
|
383 |
903 print*,'Problem with level coefficients from ',trim(cstfile)
|
|
|
384 |
stop
|
|
|
385 |
904 print*,'Cannot read surface pressure from ',trim(cstfile)
|
|
|
386 |
stop
|
|
|
387 |
905 print*,'Cannot find time ',time,' on ',fid
|
|
|
388 |
stop
|
|
|
389 |
906 print*,'Unable to get grid info ',fid
|
|
|
390 |
stop
|
|
|
391 |
|
| 3 |
michaesp |
392 |
end
|
|
|
393 |
|
|
|
394 |
c ------------------------------------------------------------
|
|
|
395 |
c Read wind information
|
|
|
396 |
c ------------------------------------------------------------
|
|
|
397 |
|
|
|
398 |
subroutine input_wind (fid,fieldname,field,time,stagz,mdv,
|
|
|
399 |
> xmin,xmax,ymin,ymax,dx,dy,nx,ny,nz,
|
|
|
400 |
> timecheck)
|
|
|
401 |
|
|
|
402 |
c Read the wind component <fieldname> from the file with identifier
|
|
|
403 |
c <fid> and save it in the 3d array <field>. The vertical staggering
|
|
|
404 |
c information is provided in <stagz> and gives the reference to either
|
|
|
405 |
c the layer or level field from <input_grid>. A consistency check is
|
|
|
406 |
c performed to have an agreement with the grid specified by <xmin,xmax,
|
|
|
407 |
c ymin,ymax,dx,dy,nx,ny,nz>.
|
|
|
408 |
|
|
|
409 |
implicit none
|
|
|
410 |
|
|
|
411 |
c Declaration of variables and parameters
|
|
|
412 |
integer fid ! File identifier
|
|
|
413 |
character*80 fieldname ! Name of the wind field
|
|
|
414 |
integer nx,ny,nz ! Dimension of fields
|
|
|
415 |
real field(nx,ny,nz) ! 3d wind field
|
|
|
416 |
real stagz ! Staggering in the z direction
|
|
|
417 |
real mdv ! Missing data flag
|
|
|
418 |
real xmin,xmax,ymin,ymax ! Domain size
|
|
|
419 |
real dx,dy ! Horizontal resolution
|
|
|
420 |
real time ! Time
|
|
|
421 |
character*80 timecheck ! Either 'yes' or 'no'
|
|
|
422 |
|
|
|
423 |
c Numerical and physical parameters
|
|
|
424 |
real eps ! Numerical epsilon
|
|
|
425 |
parameter (eps=0.001)
|
|
|
426 |
real notimecheck ! 'Flag' for no time check
|
|
|
427 |
parameter (notimecheck=7.26537)
|
|
|
428 |
|
|
|
429 |
c Netcdf variables
|
|
|
430 |
integer ierr
|
|
|
431 |
character*80 varname
|
|
|
432 |
integer vardim(4)
|
|
|
433 |
real varmin(4),varmax(4)
|
|
|
434 |
real stag(4)
|
|
|
435 |
integer ndim
|
|
|
436 |
real times(10)
|
|
|
437 |
integer ntimes
|
|
|
438 |
character*80 cstfile
|
|
|
439 |
integer cstid
|
|
|
440 |
real aklay(200),bklay(200),aklev(200),bklev(200)
|
|
|
441 |
real ps(nx,ny)
|
|
|
442 |
|
|
|
443 |
c Auxiliary variables
|
|
|
444 |
integer isok
|
|
|
445 |
integer i,j,k
|
|
|
446 |
integer nz1
|
|
|
447 |
real rtime
|
|
|
448 |
|
| 44 |
michaesp |
449 |
c Read variable definition - for P, PLEV and PLAY: load also ak,bk
|
|
|
450 |
if ( ( fieldname.eq.'PLEV' ).or.
|
|
|
451 |
> ( fieldname.eq.'PLAY' ).or.
|
|
|
452 |
> ( fieldname.eq.'P' ) )
|
|
|
453 |
>then
|
|
|
454 |
call getcfn(fid,cstfile,ierr)
|
|
|
455 |
if (ierr.ne.0) goto 905
|
|
|
456 |
call cdfopn(cstfile,cstid,ierr)
|
|
|
457 |
if (ierr.ne.0) goto 905
|
|
|
458 |
call getlevs(cstid,nz1,aklev,bklev,aklay,bklay,ierr)
|
|
|
459 |
if (ierr.ne.0) goto 905
|
|
|
460 |
call clscdf(cstid,ierr)
|
|
|
461 |
if (ierr.ne.0) goto 905
|
|
|
462 |
varname = 'PS'
|
|
|
463 |
call getdef(fid,varname,ndim,mdv,vardim,
|
|
|
464 |
> varmin,varmax,stag,ierr)
|
|
|
465 |
vardim(3) = nz1
|
|
|
466 |
if (ierr.ne.0) goto 900
|
|
|
467 |
|
| 36 |
michaesp |
468 |
else
|
| 44 |
michaesp |
469 |
varname = fieldname
|
|
|
470 |
call getdef(fid,varname,ndim,mdv,vardim,
|
|
|
471 |
> varmin,varmax,stag,ierr)
|
|
|
472 |
if (ierr.ne.0) goto 900
|
|
|
473 |
stagz=stag(3)
|
| 36 |
michaesp |
474 |
endif
|
| 29 |
michaesp |
475 |
|
| 44 |
michaesp |
476 |
c Get time information (set time to first one in the file)
|
|
|
477 |
call gettimes(fid,times,ntimes,ierr)
|
|
|
478 |
if (ierr.ne.0) goto 902
|
|
|
479 |
isok=0
|
|
|
480 |
do i=1,ntimes
|
|
|
481 |
if (abs(time-times(i)).lt.eps) then
|
|
|
482 |
isok = 1
|
|
|
483 |
rtime = times(i)
|
|
|
484 |
elseif (timecheck.eq.'no') then
|
|
|
485 |
isok = 1
|
|
|
486 |
rtime = times(1)
|
|
|
487 |
endif
|
| 3 |
michaesp |
488 |
enddo
|
| 44 |
michaesp |
489 |
if ( isok.eq.0 ) goto 904
|
| 3 |
michaesp |
490 |
|
| 44 |
michaesp |
491 |
c Read field
|
|
|
492 |
if ( ( fieldname.eq.'P' ).or.(fieldname.eq.'PLAY') ) then ! P, PLAY
|
|
|
493 |
stagz = -0.5
|
|
|
494 |
varname = 'PS'
|
|
|
495 |
call getdat(fid,varname,rtime,0,ps,ierr)
|
|
|
496 |
if (ierr.ne.0) goto 903
|
|
|
497 |
do i=1,nx
|
|
|
498 |
do j=1,ny
|
|
|
499 |
do k=1,nz
|
|
|
500 |
field(i,j,k)=aklay(k)+bklay(k)*ps(i,j)
|
|
|
501 |
enddo
|
|
|
502 |
enddo
|
| 25 |
michaesp |
503 |
enddo
|
| 44 |
michaesp |
504 |
|
|
|
505 |
elseif ( fieldname.eq.'PLEV' ) then ! PLEV
|
|
|
506 |
stagz = 0.
|
|
|
507 |
varname = 'PS'
|
|
|
508 |
call getdat(fid,varname,rtime,0,ps,ierr)
|
|
|
509 |
if (ierr.ne.0) goto 903
|
|
|
510 |
do i=1,nx
|
|
|
511 |
do j=1,ny
|
|
|
512 |
do k=1,nz
|
|
|
513 |
field(i,j,k)=aklev(k)+bklev(k)*ps(i,j)
|
|
|
514 |
enddo
|
| 29 |
michaesp |
515 |
enddo
|
| 44 |
michaesp |
516 |
enddo
|
| 29 |
michaesp |
517 |
|
| 44 |
michaesp |
518 |
else ! Other fields
|
|
|
519 |
varname=fieldname
|
|
|
520 |
call getdat(fid,varname,rtime,0,field,ierr)
|
|
|
521 |
if (ierr.ne.0) goto 903
|
|
|
522 |
|
| 25 |
michaesp |
523 |
endif
|
|
|
524 |
|
| 3 |
michaesp |
525 |
c If the field is 2D, expand it to 3D - simple handling of 2D tracing
|
|
|
526 |
if ( vardim(3).eq.1 ) then
|
| 44 |
michaesp |
527 |
do i=1,nx
|
|
|
528 |
do j=1,ny
|
|
|
529 |
do k=1,nz
|
|
|
530 |
field(i,j,k) = field(i,j,1)
|
| 3 |
michaesp |
531 |
enddo
|
|
|
532 |
enddo
|
|
|
533 |
enddo
|
|
|
534 |
endif
|
| 44 |
michaesp |
535 |
|
| 3 |
michaesp |
536 |
|
|
|
537 |
|
| 44 |
michaesp |
538 |
c Exception handling
|
| 3 |
michaesp |
539 |
return
|
| 44 |
michaesp |
540 |
|
|
|
541 |
900 print*,'Cannot retrieve definition for ',trim(varname),' ',fid
|
|
|
542 |
stop
|
|
|
543 |
901 print*,'Grid inconsistency detected for ',trim(varname),' ',fid
|
|
|
544 |
stop
|
|
|
545 |
902 print*,'Cannot retrieve time for ',trim(varname),' ',fid
|
|
|
546 |
stop
|
|
|
547 |
903 print*,'Cannot load wind component ',trim(varname),' ',fid
|
|
|
548 |
stop
|
|
|
549 |
904 print*,'Cannot load time ',time,' for ',trim(varname),' ',fid
|
|
|
550 |
stop
|
|
|
551 |
905 print*,'Cannot load time vertical grid AK, BK from file ',fid
|
|
|
552 |
stop
|
|
|
553 |
|
| 3 |
michaesp |
554 |
end
|
|
|
555 |
|
|
|
556 |
c ------------------------------------------------------------
|
|
|
557 |
c Close input file
|
|
|
558 |
c ------------------------------------------------------------
|
|
|
559 |
|
|
|
560 |
subroutine input_close(fid)
|
|
|
561 |
|
|
|
562 |
c Close the input file with file identifier <fid>.
|
|
|
563 |
|
|
|
564 |
implicit none
|
|
|
565 |
|
|
|
566 |
c Declaration of subroutine parameters
|
|
|
567 |
integer fid
|
|
|
568 |
|
|
|
569 |
c Auxiliary variables
|
|
|
570 |
integer ierr
|
|
|
571 |
|
|
|
572 |
c Close file
|
| 44 |
michaesp |
573 |
call clscdf(fid,ierr)
|
|
|
574 |
|
| 21 |
michaesp |
575 |
end
|
|
|
576 |
|
|
|
577 |
c ------------------------------------------------------------
|
|
|
578 |
c Get a list of variables on netCDF file
|
|
|
579 |
c ------------------------------------------------------------
|
|
|
580 |
|
|
|
581 |
subroutine input_getvars(fid,vnam,nvars)
|
|
|
582 |
|
|
|
583 |
c List of variables on netCDF file
|
|
|
584 |
|
|
|
585 |
implicit none
|
|
|
586 |
|
|
|
587 |
c Declaration of subroutine parameters
|
|
|
588 |
integer fid
|
|
|
589 |
integer nvars
|
|
|
590 |
character*80 vnam(200)
|
|
|
591 |
|
|
|
592 |
c Auxiliary variables
|
|
|
593 |
integer ierr
|
|
|
594 |
|
| 44 |
michaesp |
595 |
c Get list and save
|
|
|
596 |
call getvars(fid,nvars,vnam,ierr)
|
| 3 |
michaesp |
597 |
|
|
|
598 |
end
|