source: trunk/src/gridcheck.f90 @ 28

Last change on this file since 28 was 27, checked in by hasod, 8 years ago
  • Implemented optional namelist input for COMMAND, RELEASES, SPECIES, AGECLASSES,OUTGRID,OUTGRID_NEST,RECEPTORS
  • Implemented com_mod switch nmlout to write input files as namelist to the output directory (.true. by default)
  • Proposed updated startup and runtime output (may change back to previous info if desired)
  • Property svn:executable set to *
File size: 20.6 KB
Line 
1!**********************************************************************
2! Copyright 1998,1999,2000,2001,2002,2005,2007,2008,2009,2010         *
3! Andreas Stohl, Petra Seibert, A. Frank, Gerhard Wotawa,             *
4! Caroline Forster, Sabine Eckhardt, John Burkhart, Harald Sodemann   *
5!                                                                     *
6! This file is part of FLEXPART.                                      *
7!                                                                     *
8! FLEXPART is free software: you can redistribute it and/or modify    *
9! it under the terms of the GNU General Public License as published by*
10! the Free Software Foundation, either version 3 of the License, or   *
11! (at your option) any later version.                                 *
12!                                                                     *
13! FLEXPART is distributed in the hope that it will be useful,         *
14! but WITHOUT ANY WARRANTY; without even the implied warranty of      *
15! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the       *
16! GNU General Public License for more details.                        *
17!                                                                     *
18! You should have received a copy of the GNU General Public License   *
19! along with FLEXPART.  If not, see <http://www.gnu.org/licenses/>.   *
20!**********************************************************************
21
22subroutine gridcheck
23
24  !**********************************************************************
25  !                                                                     *
26  !             FLEXPART MODEL SUBROUTINE GRIDCHECK                     *
27  !                                                                     *
28  !**********************************************************************
29  !                                                                     *
30  !             AUTHOR:      G. WOTAWA                                  *
31  !             DATE:        1997-08-06                                 *
32  !             LAST UPDATE: 1997-10-10                                 *
33  !                                                                     *
34  !             Update:      1999-02-08, global fields allowed, A. Stohl*
35  !             CHANGE: 11/01/2008, Harald Sodemann, GRIB1/2 input with *
36  !                                 ECMWF grib_api                      *
37  !             CHANGE: 03/12/2008, Harald Sodemann, update to f90 with *
38  !                                 ECMWF grib_api                      *
39  !                                                                     *
40  !**********************************************************************
41  !                                                                     *
42  ! DESCRIPTION:                                                        *
43  !                                                                     *
44  ! THIS SUBROUTINE DETERMINES THE GRID SPECIFICATIONS (LOWER LEFT      *
45  ! LONGITUDE, LOWER LEFT LATITUDE, NUMBER OF GRID POINTS, GRID DIST-   *
46  ! ANCE AND VERTICAL DISCRETIZATION OF THE ECMWF MODEL) FROM THE       *
47  ! GRIB HEADER OF THE FIRST INPUT FILE. THE CONSISTANCY (NO CHANGES    *
48  ! WITHIN ONE FLEXPART RUN) IS CHECKED IN THE ROUTINE "READWIND" AT    *
49  ! ANY CALL.                                                           *
50  !                                                                     *
51  ! XLON0                geographical longitude of lower left gridpoint *
52  ! YLAT0                geographical latitude of lower left gridpoint  *
53  ! NX                   number of grid points x-direction              *
54  ! NY                   number of grid points y-direction              *
55  ! DX                   grid distance x-direction                      *
56  ! DY                   grid distance y-direction                      *
57  ! NUVZ                 number of grid points for horizontal wind      *
58  !                      components in z direction                      *
59  ! NWZ                  number of grid points for vertical wind        *
60  !                      component in z direction                       *
61  ! sizesouth, sizenorth give the map scale (i.e. number of virtual grid*
62  !                      points of the polar stereographic grid):       *
63  !                      used to check the CFL criterion                *
64  ! UVHEIGHT(1)-         heights of gridpoints where u and v are        *
65  ! UVHEIGHT(NUVZ)       given                                          *
66  ! WHEIGHT(1)-          heights of gridpoints where w is given         *
67  ! WHEIGHT(NWZ)                                                        *
68  !                                                                     *
69  !**********************************************************************
70
71  use grib_api
72  use par_mod
73  use com_mod
74  use conv_mod
75  use cmapf_mod, only: stlmbr,stcm2p
76
77  implicit none
78
79  !HSO  parameters for grib_api
80  integer :: ifile
81  integer :: iret
82  integer :: igrib
83  integer :: gotGrid
84  real(kind=4) :: xaux1,xaux2,yaux1,yaux2
85  real(kind=8) :: xaux1in,xaux2in,yaux1in,yaux2in
86  integer :: gribVer,parCat,parNum,typSurf,valSurf,discipl,parID
87  !HSO  end
88  integer :: ix,jy,i,ifn,ifield,j,k,iumax,iwmax,numskip
89  real :: sizesouth,sizenorth,xauxa,pint,conversion_factor
90
91  ! VARIABLES AND ARRAYS NEEDED FOR GRIB DECODING
92
93  ! dimension of isec2 at least (22+n), where n is the number of parallels or
94  ! meridians in a quasi-regular (reduced) Gaussian or lat/long grid
95
96  ! dimension of zsec2 at least (10+nn), where nn is the number of vertical
97  ! coordinate parameters
98
99  integer :: isec1(56),isec2(22+nxmax+nymax)
100  real(kind=4) :: zsec2(60+2*nuvzmax),zsec4(jpunp)
101  character(len=1) :: opt
102
103  !HSO  grib api error messages
104  character(len=24) :: gribErrorMsg = 'Error reading grib file'
105  character(len=20) :: gribFunction = 'gridcheck'
106
107  iumax=0
108  iwmax=0
109
110  if(ideltas.gt.0) then
111    ifn=1
112  else
113    ifn=numbwf
114  endif
115  !
116  ! OPENING OF DATA FILE (GRIB CODE)
117  !
1185   call grib_open_file(ifile,path(3)(1:length(3)) &
119         //trim(wfname(ifn)),'r',iret)
120  if (iret.ne.GRIB_SUCCESS) then
121    goto 999   ! ERROR DETECTED
122  endif
123  !turn on support for multi fields messages
124  !call grib_multi_support_on
125
126  gotGrid=0
127  ifield=0
12810   ifield=ifield+1
129
130  !
131  ! GET NEXT FIELDS
132  !
133  call grib_new_from_file(ifile,igrib,iret)
134  if (iret.eq.GRIB_END_OF_FILE )  then
135    goto 30    ! EOF DETECTED
136  elseif (iret.ne.GRIB_SUCCESS) then
137    goto 999   ! ERROR DETECTED
138  endif
139
140  !first see if we read GRIB1 or GRIB2
141  call grib_get_int(igrib,'editionNumber',gribVer,iret)
142  call grib_check(iret,gribFunction,gribErrorMsg)
143
144  if (gribVer.eq.1) then ! GRIB Edition 1
145
146  !print*,'GRiB Edition 1'
147  !read the grib2 identifiers
148  call grib_get_int(igrib,'indicatorOfParameter',isec1(6),iret)
149  call grib_check(iret,gribFunction,gribErrorMsg)
150  call grib_get_int(igrib,'level',isec1(8),iret)
151  call grib_check(iret,gribFunction,gribErrorMsg)
152
153  !change code for etadot to code for omega
154  if (isec1(6).eq.77) then
155    isec1(6)=135
156  endif
157
158  !print*,isec1(6),isec1(8)
159
160  else
161
162  !print*,'GRiB Edition 2'
163  !read the grib2 identifiers
164  call grib_get_int(igrib,'discipline',discipl,iret)
165  call grib_check(iret,gribFunction,gribErrorMsg)
166  call grib_get_int(igrib,'parameterCategory',parCat,iret)
167  call grib_check(iret,gribFunction,gribErrorMsg)
168  call grib_get_int(igrib,'parameterNumber',parNum,iret)
169  call grib_check(iret,gribFunction,gribErrorMsg)
170  call grib_get_int(igrib,'typeOfFirstFixedSurface',typSurf,iret)
171  call grib_check(iret,gribFunction,gribErrorMsg)
172  call grib_get_int(igrib,'level',valSurf,iret)
173  call grib_check(iret,gribFunction,gribErrorMsg)
174  call grib_get_int(igrib,'paramId',parId,iret)
175  call grib_check(iret,gribFunction,gribErrorMsg)
176
177  !print*,discipl,parCat,parNum,typSurf,valSurf
178
179  !convert to grib1 identifiers
180  isec1(6)=-1
181  isec1(7)=-1
182  isec1(8)=-1
183  isec1(8)=valSurf     ! level
184  if ((parCat.eq.0).and.(parNum.eq.0).and.(typSurf.eq.105)) then ! T
185    isec1(6)=130         ! indicatorOfParameter
186  elseif ((parCat.eq.2).and.(parNum.eq.2).and.(typSurf.eq.105)) then ! U
187    isec1(6)=131         ! indicatorOfParameter
188  elseif ((parCat.eq.2).and.(parNum.eq.3).and.(typSurf.eq.105)) then ! V
189    isec1(6)=132         ! indicatorOfParameter
190  elseif ((parCat.eq.1).and.(parNum.eq.0).and.(typSurf.eq.105)) then ! Q
191    isec1(6)=133         ! indicatorOfParameter
192  elseif ((parCat.eq.3).and.(parNum.eq.0).and.(typSurf.eq.1)) then !SP
193    isec1(6)=134         ! indicatorOfParameter
194  elseif ((parCat.eq.2).and.(parNum.eq.32)) then ! W, actually eta dot
195    isec1(6)=135         ! indicatorOfParameter
196  elseif ((parCat.eq.128).and.(parNum.eq.77)) then ! W, actually eta dot
197    isec1(6)=135         ! indicatorOfParameter
198  elseif ((parCat.eq.3).and.(parNum.eq.0).and.(typSurf.eq.101)) then !SLP
199    isec1(6)=151         ! indicatorOfParameter
200  elseif ((parCat.eq.2).and.(parNum.eq.2).and.(typSurf.eq.103)) then ! 10U
201    isec1(6)=165         ! indicatorOfParameter
202  elseif ((parCat.eq.2).and.(parNum.eq.3).and.(typSurf.eq.103)) then ! 10V
203    isec1(6)=166         ! indicatorOfParameter
204  elseif ((parCat.eq.0).and.(parNum.eq.0).and.(typSurf.eq.103)) then ! 2T
205    isec1(6)=167         ! indicatorOfParameter
206  elseif ((parCat.eq.0).and.(parNum.eq.6).and.(typSurf.eq.103)) then ! 2D
207    isec1(6)=168         ! indicatorOfParameter
208  elseif ((parCat.eq.1).and.(parNum.eq.11).and.(typSurf.eq.1)) then ! SD
209    isec1(6)=141         ! indicatorOfParameter
210  elseif ((parCat.eq.6).and.(parNum.eq.1) .or. parId .eq. 164) then ! CC
211    isec1(6)=164         ! indicatorOfParameter
212  elseif ((parCat.eq.1).and.(parNum.eq.9) .or. parId .eq. 142) then ! LSP
213    isec1(6)=142         ! indicatorOfParameter
214  elseif ((parCat.eq.1).and.(parNum.eq.10)) then ! CP
215    isec1(6)=143         ! indicatorOfParameter
216  elseif ((parCat.eq.0).and.(parNum.eq.11).and.(typSurf.eq.1)) then ! SHF
217    isec1(6)=146         ! indicatorOfParameter
218  elseif ((parCat.eq.4).and.(parNum.eq.9).and.(typSurf.eq.1)) then ! SR
219    isec1(6)=176         ! indicatorOfParameter
220  elseif ((parCat.eq.2).and.(parNum.eq.17) .or. parId .eq. 180) then ! EWSS
221    isec1(6)=180         ! indicatorOfParameter
222  elseif ((parCat.eq.2).and.(parNum.eq.18) .or. parId .eq. 181) then ! NSSS
223    isec1(6)=181         ! indicatorOfParameter
224  elseif ((parCat.eq.3).and.(parNum.eq.4)) then ! ORO
225    isec1(6)=129         ! indicatorOfParameter
226  elseif ((parCat.eq.3).and.(parNum.eq.7) .or. parId .eq. 160) then ! SDO
227    isec1(6)=160         ! indicatorOfParameter
228  elseif ((discipl.eq.2).and.(parCat.eq.0).and.(parNum.eq.0).and. &
229       (typSurf.eq.1)) then ! LSM
230    isec1(6)=172         ! indicatorOfParameter
231  else
232    print*,'***ERROR: undefined GRiB2 message found!',discipl, &
233         parCat,parNum,typSurf
234  endif
235  if(parId .ne. isec1(6) .and. parId .ne. 77) then
236    write(*,*) 'parId',parId, 'isec1(6)',isec1(6)
237!    stop
238  endif
239
240  endif
241
242  !get the size and data of the values array
243  if (isec1(6).ne.-1) then
244    call grib_get_real4_array(igrib,'values',zsec4,iret)
245    call grib_check(iret,gribFunction,gribErrorMsg)
246  endif
247
248  if (ifield.eq.1) then
249
250  !HSO  get the required fields from section 2 in a gribex compatible manner
251    call grib_get_int(igrib,'numberOfPointsAlongAParallel', &
252         isec2(2),iret)
253    call grib_check(iret,gribFunction,gribErrorMsg)
254    call grib_get_int(igrib,'numberOfPointsAlongAMeridian', &
255         isec2(3),iret)
256    call grib_check(iret,gribFunction,gribErrorMsg)
257    call grib_get_real8(igrib,'longitudeOfFirstGridPointInDegrees', &
258         xaux1in,iret)
259    call grib_check(iret,gribFunction,gribErrorMsg)
260    call grib_get_int(igrib,'numberOfVerticalCoordinateValues', &
261         isec2(12),iret)
262    call grib_check(iret,gribFunction,gribErrorMsg)
263
264  !  get the size and data of the vertical coordinate array
265    call grib_get_real4_array(igrib,'pv',zsec2,iret)
266    call grib_check(iret,gribFunction,gribErrorMsg)
267
268    nxfield=isec2(2)
269    ny=isec2(3)
270    nlev_ec=isec2(12)/2-1
271   endif
272
273  !HSO  get the second part of the grid dimensions only from GRiB1 messages
274  if (isec1(6) .eq. 167 .and. (gotGrid.eq.0)) then
275    call grib_get_real8(igrib,'longitudeOfLastGridPointInDegrees', &
276         xaux2in,iret)
277    call grib_check(iret,gribFunction,gribErrorMsg)
278    call grib_get_real8(igrib,'latitudeOfLastGridPointInDegrees', &
279         yaux1in,iret)
280    call grib_check(iret,gribFunction,gribErrorMsg)
281    call grib_get_real8(igrib,'latitudeOfFirstGridPointInDegrees', &
282         yaux2in,iret)
283    call grib_check(iret,gribFunction,gribErrorMsg)
284    xaux1=xaux1in
285    xaux2=xaux2in
286    yaux1=yaux1in
287    yaux2=yaux2in
288    if (xaux1.gt.180.) xaux1=xaux1-360.0
289    if (xaux2.gt.180.) xaux2=xaux2-360.0
290    if (xaux1.lt.-180.) xaux1=xaux1+360.0
291    if (xaux2.lt.-180.) xaux2=xaux2+360.0
292    if (xaux2.lt.xaux1) xaux2=xaux2+360.0
293    xlon0=xaux1
294    ylat0=yaux1
295    dx=(xaux2-xaux1)/real(nxfield-1)
296    dy=(yaux2-yaux1)/real(ny-1)
297    dxconst=180./(dx*r_earth*pi)
298    dyconst=180./(dy*r_earth*pi)
299    gotGrid=1
300  ! Check whether fields are global
301  ! If they contain the poles, specify polar stereographic map
302  ! projections using the stlmbr- and stcm2p-calls
303  !***********************************************************
304
305    xauxa=abs(xaux2+dx-360.-xaux1)
306    if (xauxa.lt.0.001) then
307      nx=nxfield+1                 ! field is cyclic
308      xglobal=.true.
309      if (abs(nxshift).ge.nx) &
310           stop 'nxshift in file par_mod is too large'
311      xlon0=xlon0+real(nxshift)*dx
312    else
313      nx=nxfield
314      xglobal=.false.
315      if (nxshift.ne.0) &
316           stop 'nxshift (par_mod) must be zero for non-global domain'
317    endif
318    nxmin1=nx-1
319    nymin1=ny-1
320    if (xlon0.gt.180.) xlon0=xlon0-360.
321    xauxa=abs(yaux1+90.)
322    if (xglobal.and.xauxa.lt.0.001) then
323      sglobal=.true.               ! field contains south pole
324  ! Enhance the map scale by factor 3 (*2=6) compared to north-south
325  ! map scale
326      sizesouth=6.*(switchsouth+90.)/dy
327      call stlmbr(southpolemap,-90.,0.)
328      call stcm2p(southpolemap,0.,0.,switchsouth,0.,sizesouth, &
329           sizesouth,switchsouth,180.)
330      switchsouthg=(switchsouth-ylat0)/dy
331    else
332      sglobal=.false.
333      switchsouthg=999999.
334    endif
335    xauxa=abs(yaux2-90.)
336    if (xglobal.and.xauxa.lt.0.001) then
337      nglobal=.true.               ! field contains north pole
338  ! Enhance the map scale by factor 3 (*2=6) compared to north-south
339  ! map scale
340      sizenorth=6.*(90.-switchnorth)/dy
341      call stlmbr(northpolemap,90.,0.)
342      call stcm2p(northpolemap,0.,0.,switchnorth,0.,sizenorth, &
343           sizenorth,switchnorth,180.)
344      switchnorthg=(switchnorth-ylat0)/dy
345    else
346      nglobal=.false.
347      switchnorthg=999999.
348    endif
349    if (nxshift.lt.0) &
350         stop 'nxshift (par_mod) must not be negative'
351    if (nxshift.ge.nxfield) stop 'nxshift (par_mod) too large'
352  endif ! gotGrid
353
354  k=isec1(8)
355  if(isec1(6).eq.131) iumax=max(iumax,nlev_ec-k+1)
356  if(isec1(6).eq.135) iwmax=max(iwmax,nlev_ec-k+1)
357
358  if(isec1(6).eq.129) then
359    do jy=0,ny-1
360      do ix=0,nxfield-1
361        oro(ix,jy)=zsec4(nxfield*(ny-jy-1)+ix+1)/ga
362      end do
363    end do
364  endif
365  if(isec1(6).eq.172) then
366    do jy=0,ny-1
367      do ix=0,nxfield-1
368        lsm(ix,jy)=zsec4(nxfield*(ny-jy-1)+ix+1)
369      end do
370    end do
371  endif
372  if(isec1(6).eq.160) then
373    do jy=0,ny-1
374      do ix=0,nxfield-1
375        excessoro(ix,jy)=zsec4(nxfield*(ny-jy-1)+ix+1)
376      end do
377    end do
378  endif
379
380  call grib_release(igrib)
381  goto 10                      !! READ NEXT LEVEL OR PARAMETER
382  !
383  ! CLOSING OF INPUT DATA FILE
384  !
385
38630   call grib_close_file(ifile)
387
388  !error message if no fields found with correct first longitude in it
389  if (gotGrid.eq.0) then
390    print*,'***ERROR: input file needs to contain GRiB1 formatted'// &
391         'messages'
392    stop
393  endif
394
395  nuvz=iumax
396  nwz =iwmax
397  if(nuvz.eq.nlev_ec) nwz=nlev_ec+1
398
399  if (nx.gt.nxmax) then
400   write(*,*) 'FLEXPART error: Too many grid points in x direction.'
401    write(*,*) 'Reduce resolution of wind fields.'
402    write(*,*) 'Or change parameter settings in file par_mod.'
403    write(*,*) nx,nxmax
404    stop
405  endif
406
407  if (ny.gt.nymax) then
408   write(*,*) 'FLEXPART error: Too many grid points in y direction.'
409    write(*,*) 'Reduce resolution of wind fields.'
410    write(*,*) 'Or change parameter settings in file par_mod.'
411    write(*,*) ny,nymax
412    stop
413  endif
414
415  if (nuvz+1.gt.nuvzmax) then
416    write(*,*) 'FLEXPART error: Too many u,v grid points in z '// &
417         'direction.'
418    write(*,*) 'Reduce resolution of wind fields.'
419    write(*,*) 'Or change parameter settings in file par_mod.'
420    write(*,*) nuvz+1,nuvzmax
421    stop
422  endif
423
424  if (nwz.gt.nwzmax) then
425    write(*,*) 'FLEXPART error: Too many w grid points in z '// &
426         'direction.'
427    write(*,*) 'Reduce resolution of wind fields.'
428    write(*,*) 'Or change parameter settings in file par_mod.'
429    write(*,*) nwz,nwzmax
430    stop
431  endif
432
433  ! If desired, shift all grids by nxshift grid cells
434  !**************************************************
435
436  if (xglobal) then
437    call shift_field_0(oro,nxfield,ny)
438    call shift_field_0(lsm,nxfield,ny)
439    call shift_field_0(excessoro,nxfield,ny)
440  endif
441
442  ! Output of grid info
443  !********************
444
445  write(*,'(a,2i7)') ' Vertical levels in ECMWF data: ', &
446       nuvz+1,nwz
447  write(*,*)
448  write(*,'(a)') ' Mother domain:'
449  write(*,'(a,f10.5,a,f10.5,a,f10.5)') '  Longitude range: ', &
450       xlon0,' to ',xlon0+(nx-1)*dx,'   Grid distance: ',dx
451  write(*,'(a,f10.5,a,f10.5,a,f10.5)') '  Latitude range : ', &
452       ylat0,' to ',ylat0+(ny-1)*dy,'   Grid distance: ',dy
453  write(*,*)
454
455
456  ! CALCULATE VERTICAL DISCRETIZATION OF ECMWF MODEL
457  ! PARAMETER akm,bkm DESCRIBE THE HYBRID "ETA" COORDINATE SYSTEM
458
459  numskip=nlev_ec-nuvz  ! number of ecmwf model layers not used
460                        ! by trajectory model
461  !do 8940 i=1,244
462  !   write (*,*) 'zsec2:',i,ifield,zsec2(i),numskip
463  !940  continue
464  !   stop
465  ! SEC SEC SEC
466  ! for unknown reason zsec 1 to 10 is filled in this version
467  ! compared to the old one
468  ! SEC SEC SE
469  do i=1,nwz
470    j=numskip+i
471    k=nlev_ec+1+numskip+i
472    akm(nwz-i+1)=zsec2(j)
473  !   write (*,*) 'ifield:',ifield,k,j,zsec2(10+j)
474    bkm(nwz-i+1)=zsec2(k)
475  end do
476
477  !
478  ! CALCULATION OF AKZ, BKZ
479  ! AKZ,BKZ: model discretization parameters at the center of each model
480  !     layer
481  !
482  ! Assign the 10 m winds to an artificial model level with akz=0 and bkz=1.0,
483  ! i.e. ground level
484  !*****************************************************************************
485
486  akz(1)=0.
487  bkz(1)=1.0
488  do i=1,nuvz
489     akz(i+1)=0.5*(akm(i+1)+akm(i))
490     bkz(i+1)=0.5*(bkm(i+1)+bkm(i))
491  end do
492  nuvz=nuvz+1
493
494  ! NOTE: In FLEXPART versions up to 4.0, the number of model levels was doubled
495  ! upon the transformation to z levels. In order to save computer memory, this is
496  ! not done anymore in the standard version. However, this option can still be
497  ! switched on by replacing the following lines with those below, that are
498  ! currently commented out. For this, similar changes are necessary in
499  ! verttransform.f and verttranform_nests.f
500  !*****************************************************************************
501
502  nz=nuvz
503  if (nz.gt.nzmax) stop 'nzmax too small'
504  do i=1,nuvz
505    aknew(i)=akz(i)
506    bknew(i)=bkz(i)
507  end do
508
509  ! Switch on following lines to use doubled vertical resolution
510  !*************************************************************
511  !nz=nuvz+nwz-1
512  !if (nz.gt.nzmax) stop 'nzmax too small'
513  !do 100 i=1,nwz
514  !  aknew(2*(i-1)+1)=akm(i)
515  !00     bknew(2*(i-1)+1)=bkm(i)
516  !do 110 i=2,nuvz
517  !  aknew(2*(i-1))=akz(i)
518  !10     bknew(2*(i-1))=bkz(i)
519  ! End doubled vertical resolution
520
521
522  ! Determine the uppermost level for which the convection scheme shall be applied
523  ! by assuming that there is no convection above 50 hPa (for standard SLP)
524  !*****************************************************************************
525
526  do i=1,nuvz-2
527    pint=akz(i)+bkz(i)*101325.
528    if (pint.lt.5000.) goto 96
529  end do
53096   nconvlev=i
531  if (nconvlev.gt.nconvlevmax-1) then
532    nconvlev=nconvlevmax-1
533    write(*,*) 'Attention, convection only calculated up to ', &
534         akz(nconvlev)+bkz(nconvlev)*1013.25,' hPa'
535  endif
536
537  return
538
539999   write(*,*)
540  write(*,*) ' ###########################################'// &
541       '###### '
542  write(*,*) '       TRAJECTORY MODEL SUBROUTINE GRIDCHECK:'
543  write(*,*) ' CAN NOT OPEN INPUT DATA FILE '//wfname(ifn)
544  write(*,*) ' ###########################################'// &
545       '###### '
546  write(*,*)
547  write(*,'(a)') '!!! PLEASE INSERT A NEW CD-ROM AND   !!!'
548  write(*,'(a)') '!!! PRESS ANY KEY TO CONTINUE...     !!!'
549  write(*,'(a)') '!!! ...OR TERMINATE FLEXPART PRESSING!!!'
550  write(*,'(a)') '!!! THE "X" KEY...                   !!!'
551  write(*,*)
552  read(*,'(a)') opt
553  if(opt.eq.'X') then
554    stop
555  else
556    goto 5
557  endif
558
559end subroutine gridcheck
560
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