source: LMDZ4/branches/LMDZ4-dev-20091210/libf/phylmd/readaerosol.F90 @ 5440

Last change on this file since 5440 was 1270, checked in by Laurent Fairhead, 15 years ago

Les nouvelles routines de lecture des aerosols posent probleme en multiproc. On revient aux routines
precedentes en incluant le traitement du calendrier realiste.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 22.5 KB
Line 
1! $Id: readaerosol.F90 1270 2009-11-25 14:02:45Z evignon $
2!
3MODULE readaerosol_mod
4
5  REAL, SAVE :: not_valid=-333.
6
7CONTAINS
8
9SUBROUTINE readaerosol(name_aero, type, iyr_in, klev_src, pt_ap, pt_b, pt_out, psurf, load)
10
11!****************************************************************************************
12! This routine will read the aersosol from file.
13!
14! Read a year data with get_aero_fromfile depending on aer_type :
15! - actuel   : read year 1980
16! - preind   : read natural data
17! - scenario : read one or two years and do eventually linare time interpolation
18!
19! Return pointer, pt_out, to the year read or result from interpolation
20!****************************************************************************************
21  USE dimphy
22
23  IMPLICIT NONE
24
25 INCLUDE "iniprint.h"
26
27  ! Input arguments
28  CHARACTER(len=7), INTENT(IN) :: name_aero
29  CHARACTER(len=*), INTENT(IN) :: type  ! correspond to aer_type in clesphys.h
30  INTEGER, INTENT(IN)          :: iyr_in
31
32  ! Output
33  INTEGER, INTENT(OUT)            :: klev_src
34  REAL, POINTER, DIMENSION(:)     :: pt_ap        ! Pointer for describing the vertical levels     
35  REAL, POINTER, DIMENSION(:)     :: pt_b         ! Pointer for describing the vertical levels     
36  REAL, POINTER, DIMENSION(:,:,:) :: pt_out       ! The massvar distributions, DIMENSION(klon, klev_src, 12)
37  REAL, DIMENSION(klon,12), INTENT(OUT) :: psurf  ! Surface pression for 12 months
38  REAL, DIMENSION(klon,12), INTENT(OUT) :: load   ! Aerosol mass load in each column for 12 months
39
40  ! Local variables
41  CHARACTER(len=4)                :: cyear
42  REAL, POINTER, DIMENSION(:,:,:) :: pt_2
43  REAL, DIMENSION(klon,12)        :: psurf2, load2
44  REAL                            :: p0           ! Reference pressure
45  INTEGER                         :: iyr1, iyr2, klev_src2
46  INTEGER                         :: it, k, i
47  LOGICAL, PARAMETER              :: lonlyone=.FALSE.
48
49!****************************************************************************************
50! Read data depending on aer_type
51!
52!****************************************************************************************
53
54  IF (type == 'actuel') THEN
55! Read and return data for year 1980
56!****************************************************************************************
57     cyear='1980'
58     ! get_aero_fromfile returns pt_out allocated and initialized with data for 12 month
59     ! pt_out has dimensions (klon, klev_src, 12)
60     CALL get_aero_fromfile(name_aero, cyear, klev_src, pt_ap, pt_b, p0, pt_out, psurf, load)
61     
62
63  ELSE IF (type == 'preind') THEN
64! Read and return data from file with suffix .nat
65!****************************************************************************************     
66     cyear='.nat'
67     ! get_aero_fromfile returns pt_out allocated and initialized with data for 12 month
68     ! pt_out has dimensions (klon, klev_src, 12)
69     CALL get_aero_fromfile(name_aero, cyear, klev_src, pt_ap, pt_b, p0, pt_out, psurf, load)
70     
71  ELSE IF (type == 'scenario') THEN
72! Read data depending on actual year and interpolate if necessary
73!****************************************************************************************
74     IF (iyr_in .LT. 1850) THEN
75        cyear='.nat'
76        WRITE(lunout,*) 'get_aero 1 iyr_in=', iyr_in,'   ',cyear
77        ! get_aero_fromfile returns pt_out allocated and initialized with data for 12 month
78        ! pt_out has dimensions (klon, klev_src, 12)
79        CALL get_aero_fromfile(name_aero, cyear, klev_src, pt_ap, pt_b, p0, pt_out, psurf, load)
80       
81     ELSE IF (iyr_in .GE. 2100) THEN
82        cyear='2100'
83        WRITE(lunout,*) 'get_aero 2 iyr_in=', iyr_in,'   ',cyear
84        ! get_aero_fromfile returns pt_out allocated and initialized with data for 12 month
85        ! pt_out has dimensions (klon, klev_src, 12)
86        CALL get_aero_fromfile(name_aero, cyear, klev_src, pt_ap, pt_b, p0, pt_out, psurf, load)
87       
88     ELSE
89        ! Read data from 2 decades and interpolate to actual year
90        ! a) from actual 10-yr-period
91        IF (iyr_in.LT.1900) THEN
92           iyr1 = 1850
93           iyr2 = 1900
94        ELSE IF (iyr_in.GE.1900.AND.iyr_in.LT.1920) THEN
95           iyr1 = 1900
96           iyr2 = 1920
97        ELSE
98           iyr1 = INT(iyr_in/10)*10
99           iyr2 = INT(1+iyr_in/10)*10
100        ENDIF
101       
102        WRITE(cyear,'(I4)') iyr1
103        WRITE(lunout,*) 'get_aero 3 iyr_in=', iyr_in,'   ',cyear
104        ! get_aero_fromfile returns pt_out allocated and initialized with data for 12 month
105        ! pt_out has dimensions (klon, klev_src, 12)
106        CALL get_aero_fromfile(name_aero, cyear, klev_src, pt_ap, pt_b, p0, pt_out, psurf, load)
107       
108        ! If to read two decades:
109        IF (.NOT.lonlyone) THEN
110           
111           ! b) from the next following one
112           WRITE(cyear,'(I4)') iyr2
113           WRITE(lunout,*) 'get_aero 4 iyr_in=', iyr_in,'   ',cyear
114           
115           NULLIFY(pt_2)
116           ! get_aero_fromfile returns pt_2 allocated and initialized with data for 12 month
117           ! pt_2 has dimensions (klon, klev_src, 12)
118           CALL get_aero_fromfile(name_aero, cyear, klev_src2, pt_ap, pt_b, p0, pt_2, psurf2, load2)
119           ! Test for same number of vertical levels
120           IF (klev_src /= klev_src2) THEN
121              WRITE(lunout,*) 'Two aerosols files with different number of vertical levels is not allowded'
122              CALL abort_gcm('readaersosol','Error in number of vertical levels',1)
123           END IF
124           
125           ! Linare interpolate to the actual year:
126           DO it=1,12
127              DO k=1,klev_src
128                 DO i = 1, klon
129                    pt_out(i,k,it) = &
130                         pt_out(i,k,it) - FLOAT(iyr_in-iyr1)/FLOAT(iyr2-iyr1) * &
131                         (pt_out(i,k,it) - pt_2(i,k,it))
132                 END DO
133              END DO
134
135              DO i = 1, klon
136                 psurf(i,it) = &
137                      psurf(i,it) - FLOAT(iyr_in-iyr1)/FLOAT(iyr2-iyr1) * &
138                      (psurf(i,it) - psurf2(i,it))
139
140                 load(i,it) = &
141                      load(i,it) - FLOAT(iyr_in-iyr1)/FLOAT(iyr2-iyr1) * &
142                      (load(i,it) - load2(i,it))
143              END DO
144           END DO
145
146           ! Deallocate pt_2 no more needed
147           DEALLOCATE(pt_2)
148           
149        END IF ! lonlyone
150     END IF ! iyr_in .LT. 1850
151
152  ELSE
153     WRITE(lunout,*)'This option is not implemented : aer_type = ', type
154     CALL abort_gcm('readaerosol','Error : aer_type parameter not accepted',1)
155  END IF ! type
156
157
158END SUBROUTINE readaerosol
159
160
161  SUBROUTINE get_aero_fromfile(varname, cyr, klev_src, pt_ap, pt_b, p0, pt_year, psurf_out, load_out)
162!****************************************************************************************
163! Read 12 month aerosol from file and distribute to local process on physical grid.
164! Vertical levels, klev_src, may differ from model levels if new file format.
165!
166! For mpi_root and master thread :
167! 1) Open file
168! 2) Find vertical dimension klev_src
169! 3) Read field month by month
170! 4) Close file 
171! 5) Transform the global field from 2D(iim, jjp+1) to 1D(klon_glo)
172!     - Also the levels and the latitudes have to be inversed
173!
174! For all processes and threads :
175! 6) Scatter global field(klon_glo) to local process domain(klon)
176! 7) Test for negative values
177!****************************************************************************************
178
179    USE netcdf
180    USE dimphy
181    USE mod_grid_phy_lmdz
182    USE mod_phys_lmdz_para
183    USE iophy, ONLY : io_lon, io_lat
184
185    IMPLICIT NONE
186     
187    INCLUDE "dimensions.h"     
188    INCLUDE "iniprint.h"
189
190! Input argumets
191    CHARACTER(len=7), INTENT(IN)          :: varname
192    CHARACTER(len=4), INTENT(IN)          :: cyr
193
194! Output arguments
195    INTEGER, INTENT(OUT)                  :: klev_src     ! Number of vertical levels in file
196    REAL, POINTER, DIMENSION(:)           :: pt_ap        ! Pointer for describing the vertical levels     
197    REAL, POINTER, DIMENSION(:)           :: pt_b         ! Pointer for describing the vertical levels     
198    REAL                                  :: p0           ! Reference pressure value
199    REAL, POINTER, DIMENSION(:,:,:)       :: pt_year      ! Pointer-variabale from file, 12 month, grid : klon,klev_src
200    REAL, DIMENSION(klon,12), INTENT(OUT) :: psurf_out    ! Surface pression for 12 months
201    REAL, DIMENSION(klon,12), INTENT(OUT) :: load_out     ! Aerosol mass load in each column
202
203! Local variables
204    CHARACTER(len=30)     :: fname
205    CHARACTER(len=8)      :: filename='aerosols'
206    CHARACTER(len=30)     :: cvar
207    INTEGER               :: ncid, dimid, varid
208    INTEGER               :: imth, i, j, k, ierr
209    REAL                  :: npole, spole
210    REAL, ALLOCATABLE, DIMENSION(:,:,:)   :: varmth
211    REAL, ALLOCATABLE, DIMENSION(:,:,:,:) :: varyear       ! Global variable read from file, 12 month
212    REAL, ALLOCATABLE, DIMENSION(:,:,:)   :: varyear_glo1D !(klon_glo, klev_src, 12)
213    REAL, ALLOCATABLE, DIMENSION(:)       :: varktmp
214
215    REAL, DIMENSION(iim,jjm+1,12)         :: psurf_glo2D   ! Surface pression for 12 months on dynamics global grid
216    REAL, DIMENSION(klon_glo,12)          :: psurf_glo1D   ! -"- on physical global grid
217    REAL, DIMENSION(iim,jjm+1,12)         :: load_glo2D    ! Load for 12 months on dynamics global grid
218    REAL, DIMENSION(klon_glo,12)          :: load_glo1D    ! -"- on physical global grid
219    REAL, DIMENSION(iim,jjm+1)            :: vartmp
220    REAL, DIMENSION(iim)                  :: lon_src              ! longitudes in file
221    REAL, DIMENSION(jjm+1)                :: lat_src, lat_src_inv ! latitudes in file
222    LOGICAL                               :: new_file             ! true if new file format detected
223    LOGICAL                               :: invert_lat           ! true if the field has to be inverted for latitudes
224
225
226    ! Deallocate pointers
227    IF (ASSOCIATED(pt_ap)) DEALLOCATE(pt_ap)
228    IF (ASSOCIATED(pt_b))  DEALLOCATE(pt_b)
229
230    IF (is_mpi_root .AND. is_omp_root) THEN
231
232! 1) Open file
233!****************************************************************************************
234       fname = filename//cyr//'.nc'
235 
236       WRITE(lunout,*) 'reading ', TRIM(fname)
237       CALL check_err( nf90_open(TRIM(fname), NF90_NOWRITE, ncid) )
238
239! Test for equal longitudes and latitudes in file and model
240!****************************************************************************************
241       ! Read and test longitudes
242       CALL check_err( nf90_inq_varid(ncid, 'lon', varid) )
243       CALL check_err( nf90_get_var(ncid, varid, lon_src(:)) )
244       
245       IF (maxval(ABS(lon_src - io_lon)) > 0.001) THEN
246          WRITE(lunout,*) 'Problem in longitudes read from file : ',TRIM(fname)
247          WRITE(lunout,*) 'longitudes in file ', TRIM(fname),' : ', lon_src
248          WRITE(lunout,*) 'longitudes in model :', io_lon
249         
250          CALL abort_gcm('get_aero_fromfile', 'longitudes are not the same in file and model',1)
251       END IF
252
253       ! Read and test latitudes
254       CALL check_err( nf90_inq_varid(ncid, 'lat', varid) )
255       CALL check_err( nf90_get_var(ncid, varid, lat_src(:)) )
256
257       ! Invert source latitudes
258       DO j = 1, jjm+1
259          lat_src_inv(j) = lat_src(jjm+1 +1 -j)
260       END DO
261
262       IF (maxval(ABS(lat_src - io_lat)) < 0.001) THEN
263          ! Latitudes are the same
264          invert_lat=.FALSE.
265       ELSE IF (maxval(ABS(lat_src_inv - io_lat)) < 0.001) THEN
266          ! Inverted source latitudes correspond to model latitudes
267          WRITE(lunout,*) 'latitudes will be inverted for file : ',TRIM(fname)
268          invert_lat=.TRUE.
269       ELSE
270          WRITE(lunout,*) 'Problem in latitudes read from file : ',TRIM(fname)
271          WRITE(lunout,*) 'latitudes in file ', TRIM(fname),' : ', lat_src     
272          WRITE(lunout,*) 'latitudes in model :', io_lat
273          CALL abort_gcm('get_aero_fromfile', 'latitudes do not correspond between file and model',1)
274       END IF
275
276! 2) Check if old or new file is avalabale.
277!    New type of file should contain the dimension 'lev'
278!    Old type of file should contain the dimension 'PRESNIVS'
279!****************************************************************************************
280       ierr = nf90_inq_dimid(ncid, 'lev', dimid)
281       IF (ierr /= NF90_NOERR) THEN
282          ! Coordinate axe lev not found. Check for presnivs.
283          ierr = nf90_inq_dimid(ncid, 'PRESNIVS', dimid)
284          IF (ierr /= NF90_NOERR) THEN
285             ! Dimension PRESNIVS not found either
286             CALL abort_gcm('get_aero_fromfile', 'dimension lev or presnivs not in file',1)
287          ELSE
288             ! Old file found
289             new_file=.FALSE.
290             WRITE(lunout,*) 'Vertical interpolation for ',TRIM(varname),' will not be done'
291          END IF
292       ELSE
293          ! New file found
294          new_file=.TRUE.
295          WRITE(lunout,*) 'Vertical interpolation for ',TRIM(varname),' will be done'
296       END IF
297       
298! 2) Find vertical dimension klev_src
299!****************************************************************************************
300       CALL check_err( nf90_inquire_dimension(ncid, dimid, len = klev_src) )
301       
302     ! Allocate variables depending on the number of vertical levels
303       ALLOCATE(varmth(iim, jjm+1, klev_src), varyear(iim, jjm+1, klev_src, 12), stat=ierr)
304       IF (ierr /= 0) CALL abort_gcm('get_aero_fromfile', 'pb in allocation 1',1)
305
306       ALLOCATE(pt_ap(klev_src), pt_b(klev_src), varktmp(klev_src), stat=ierr)
307       IF (ierr /= 0) CALL abort_gcm('get_aero_fromfile', 'pb in allocation 2',1)
308
309! 3) Read all variables from file
310!    There is 2 options for the file structure :
311!    new_file=TRUE  : read varyear, ps, pt_ap and pt_b
312!    new_file=FALSE : read varyear month by month
313!****************************************************************************************
314
315       IF (new_file) THEN
316
317! ++) Read the aerosol concentration month by month and concatenate to total variable varyear
318!****************************************************************************************
319          ! Get variable id
320          CALL check_err( nf90_inq_varid(ncid, TRIM(varname), varid) )
321         
322          ! Get the variable
323          CALL check_err( nf90_get_var(ncid, varid, varyear(:,:,:,:)) )
324         
325! ++) Read surface pression, 12 month in one variable
326!****************************************************************************************
327          ! Get variable id
328          CALL check_err( nf90_inq_varid(ncid, "ps", varid) )
329          ! Get the variable
330          CALL check_err( nf90_get_var(ncid, varid, psurf_glo2D) )
331         
332! ++) Read mass load, 12 month in one variable
333!****************************************************************************************
334          ! Get variable id
335          CALL check_err( nf90_inq_varid(ncid, "load_"//TRIM(varname), varid) )
336          ! Get the variable
337          CALL check_err( nf90_get_var(ncid, varid, load_glo2D) )
338         
339! ++) Read ap
340!****************************************************************************************
341          ! Get variable id
342          CALL check_err( nf90_inq_varid(ncid, "ap", varid) )
343          ! Get the variable
344          CALL check_err( nf90_get_var(ncid, varid, pt_ap) )
345
346! ++) Read b
347!****************************************************************************************
348          ! Get variable id
349          CALL check_err( nf90_inq_varid(ncid, "b", varid) )
350          ! Get the variable
351          CALL check_err( nf90_get_var(ncid, varid, pt_b) )
352
353! ++) Read p0 : reference pressure
354!****************************************************************************************
355          ! Get variable id
356          CALL check_err( nf90_inq_varid(ncid, "p0", varid) )
357          ! Get the variable
358          CALL check_err( nf90_get_var(ncid, varid, p0) )
359         
360
361       ELSE  ! old file
362
363! ++) Read the aerosol concentration month by month and concatenate to total variable varyear
364!****************************************************************************************
365          DO imth=1, 12
366             IF (imth.EQ.1) THEN
367                cvar=TRIM(varname)//'JAN'
368             ELSE IF (imth.EQ.2) THEN
369                cvar=TRIM(varname)//'FEB'
370             ELSE IF (imth.EQ.3) THEN
371                cvar=TRIM(varname)//'MAR'
372             ELSE IF (imth.EQ.4) THEN
373                cvar=TRIM(varname)//'APR'
374             ELSE IF (imth.EQ.5) THEN
375                cvar=TRIM(varname)//'MAY'
376             ELSE IF (imth.EQ.6) THEN
377                cvar=TRIM(varname)//'JUN'
378             ELSE IF (imth.EQ.7) THEN
379                cvar=TRIM(varname)//'JUL'
380             ELSE IF (imth.EQ.8) THEN
381                cvar=TRIM(varname)//'AUG'
382             ELSE IF (imth.EQ.9) THEN
383                cvar=TRIM(varname)//'SEP'
384             ELSE IF (imth.EQ.10) THEN
385                cvar=TRIM(varname)//'OCT'
386             ELSE IF (imth.EQ.11) THEN
387                cvar=TRIM(varname)//'NOV'
388             ELSE IF (imth.EQ.12) THEN
389                cvar=TRIM(varname)//'DEC'
390             END IF
391             
392             ! Get variable id
393             CALL check_err( nf90_inq_varid(ncid, TRIM(cvar), varid) )
394             
395             ! Get the variable
396             CALL check_err( nf90_get_var(ncid, varid, varmth) )
397             
398             ! Store in variable for the whole year
399             varyear(:,:,:,imth)=varmth(:,:,:)
400             
401          END DO
402         
403          ! Putting dummy
404          psurf_glo2D(:,:,:) = not_valid
405          load_glo2D(:,:,:)  = not_valid
406          pt_ap(:) = not_valid
407          pt_b(:)  = not_valid
408
409       END IF
410
411! 4) Close file 
412!****************************************************************************************
413       CALL check_err( nf90_close(ncid) )
414     
415
416! 5) Transform the global field from 2D(iim, jjp+1) to 1D(klon_glo)
417!****************************************************************************************
418! Test if vertical levels have to be inversed
419
420       IF ((pt_b(1) < pt_b(klev_src)) .OR. .NOT. new_file) THEN
421          WRITE(lunout,*) 'Vertical axis in file ',TRIM(fname), ' needs to be inverted'
422          WRITE(lunout,*) 'before pt_ap = ', pt_ap
423          WRITE(lunout,*) 'before pt_b = ', pt_b
424         
425          ! Inverse vertical levels for varyear
426          DO imth=1, 12
427             varmth(:,:,:) = varyear(:,:,:,imth) ! use varmth temporarly
428             DO k=1, klev_src
429                DO j=1, jjm+1
430                   DO i=1,iim
431                      varyear(i,j,k,imth) = varmth(i,j,klev_src+1-k)
432                   END DO
433                END DO
434             END DO
435          END DO
436           
437          ! Inverte vertical axes for pt_ap and pt_b
438          varktmp(:) = pt_ap(:)
439          DO k=1, klev_src
440             pt_ap(k) = varktmp(klev_src+1-k)
441          END DO
442
443          varktmp(:) = pt_b(:)
444          DO k=1, klev_src
445             pt_b(k) = varktmp(klev_src+1-k)
446          END DO
447          WRITE(lunout,*) 'after pt_ap = ', pt_ap
448          WRITE(lunout,*) 'after pt_b = ', pt_b
449
450       ELSE
451          WRITE(lunout,*) 'Vertical axis in file ',TRIM(fname), ' is ok, no vertical inversion is done'
452          WRITE(lunout,*) 'pt_ap = ', pt_ap
453          WRITE(lunout,*) 'pt_b = ', pt_b
454       END IF
455
456!     - Invert latitudes if necessary
457       DO imth=1, 12
458          IF (invert_lat) THEN
459
460             ! Invert latitudes for the variable
461             varmth(:,:,:) = varyear(:,:,:,imth) ! use varmth temporarly
462             DO k=1,klev_src
463                DO j=1,jjm+1
464                   DO i=1,iim
465                      varyear(i,j,k,imth) = varmth(i,jjm+1+1-j,k)
466                   END DO
467                END DO
468             END DO
469             
470             ! Invert latitudes for surface pressure
471             vartmp(:,:) = psurf_glo2D(:,:,imth)
472             DO j=1, jjm+1
473                DO i=1,iim
474                   psurf_glo2D(i,j,imth)= vartmp(i,jjm+1+1-j)
475                END DO
476             END DO
477             
478             ! Invert latitudes for the load
479             vartmp(:,:) = load_glo2D(:,:,imth)
480             DO j=1, jjm+1
481                DO i=1,iim
482                   load_glo2D(i,j,imth)= vartmp(i,jjm+1+1-j)
483                END DO
484             END DO
485          END IF ! invert_lat
486             
487          ! Do zonal mead at poles and distribut at whole first and last latitude
488          DO k=1, klev_src
489             npole=0.  ! North pole, j=1
490             spole=0.  ! South pole, j=jjm+1         
491             DO i=1,iim
492                npole = npole + varyear(i,1,k,imth)
493                spole = spole + varyear(i,jjm+1,k,imth)
494             END DO
495             npole = npole/FLOAT(iim)
496             spole = spole/FLOAT(iim)
497             varyear(:,1,    k,imth) = npole
498             varyear(:,jjm+1,k,imth) = spole
499          END DO
500       END DO ! imth
501       
502       ALLOCATE(varyear_glo1D(klon_glo, klev_src, 12), stat=ierr)
503       IF (ierr /= 0) CALL abort_gcm('get_aero_fromfile', 'pb in allocation 3',1)
504       
505       ! Transform from 2D to 1D field
506       CALL grid2Dto1D_glo(varyear,varyear_glo1D)
507       CALL grid2Dto1D_glo(psurf_glo2D,psurf_glo1D)
508       CALL grid2Dto1D_glo(load_glo2D,load_glo1D)
509
510    ELSE
511      ALLOCATE(varyear_glo1D(0,0,0))       
512    END IF ! is_mpi_root .AND. is_omp_root
513
514!$OMP BARRIER
515 
516! 6) Distribute to all processes
517!    Scatter global field(klon_glo) to local process domain(klon)
518!    and distribute klev_src to all processes
519!****************************************************************************************
520
521    ! Distribute klev_src
522    CALL bcast(klev_src)
523
524    ! Allocate and distribute pt_ap and pt_b
525    IF (.NOT. ASSOCIATED(pt_ap)) THEN  ! if pt_ap is allocated also pt_b is allocated
526       ALLOCATE(pt_ap(klev_src), pt_b(klev_src), stat=ierr)
527       IF (ierr /= 0) CALL abort_gcm('get_aero_fromfile', 'pb in allocation 4',1)
528    END IF
529    CALL bcast(pt_ap)
530    CALL bcast(pt_b)
531
532    ! Allocate space for output pointer variable at local process
533    IF (ASSOCIATED(pt_year)) DEALLOCATE(pt_year)
534    ALLOCATE(pt_year(klon, klev_src, 12), stat=ierr)
535    IF (ierr /= 0) CALL abort_gcm('get_aero_fromfile', 'pb in allocation 5',1)
536
537    ! Scatter global field to local domain at local process
538    CALL scatter(varyear_glo1D, pt_year)
539    CALL scatter(psurf_glo1D, psurf_out)
540    CALL scatter(load_glo1D,  load_out)
541
542! 7) Test for negative values
543!****************************************************************************************
544    IF (MINVAL(pt_year) < 0.) THEN
545       WRITE(lunout,*) 'Warning! Negative values read from file :', fname
546    END IF
547
548  END SUBROUTINE get_aero_fromfile
549
550
551  SUBROUTINE check_err(status)
552    USE netcdf
553    IMPLICIT NONE
554
555    INCLUDE "iniprint.h"
556    INTEGER, INTENT (IN) :: status
557
558    IF (status /= NF90_NOERR) THEN
559       WRITE(lunout,*) 'Error in get_aero_fromfile ',status
560       CALL abort_gcm('get_aero_fromfile',trim(nf90_strerror(status)),1)
561    END IF
562
563  END SUBROUTINE check_err
564
565
566END MODULE readaerosol_mod
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