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readaerosol_mod.F90 @ 5456

Last change on this file since 5456 was 3440, checked in by Laurent Fairhead, 6 years ago
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1	! $Id: readaerosol.F90 3436 2019-01-22 16:26:21Z emillour $
2	!
3	MODULE readaerosol_mod
4
5	REAL, SAVE :: not_valid=-333.
6
7	INTEGER, SAVE :: nbp_lon_src
8	!$OMP THREADPRIVATE(nbp_lon_src)
9	INTEGER, SAVE :: nbp_lat_src
10	!$OMP THREADPRIVATE(nbp_lat_src)
11	REAL, ALLOCATABLE, SAVE :: psurf_interp(:,:)
12	!$OMP THREADPRIVATE(psurf_interp)
13
14	CONTAINS
15
16	SUBROUTINE readaerosol(name_aero, type, filename, iyr_in, klev_src, pt_ap, pt_b, pt_out, psurf, load)
17
18	!****************************************************************************************
19	! This routine will read the aersosol from file.
20	!
21	! Read a year data with get_aero_fromfile depending on aer_type :
22	! - actuel : read year 1980
23	! - preind : read natural data
24	! - scenario : read one or two years and do eventually linare time interpolation
25	!
26	! Return pointer, pt_out, to the year read or result from interpolation
27	!****************************************************************************************
28	USE dimphy
29	USE print_control_mod, ONLY: lunout
30
31	IMPLICIT NONE
32
33	! Input arguments
34	CHARACTER(len=7), INTENT(IN) :: name_aero
35	CHARACTER(len=*), INTENT(IN) :: type ! actuel, annuel, scenario or preind
36	CHARACTER(len=8), INTENT(IN) :: filename
37	INTEGER, INTENT(IN) :: iyr_in
38
39	! Output
40	INTEGER, INTENT(OUT) :: klev_src
41	REAL, POINTER, DIMENSION(:) :: pt_ap ! Pointer for describing the vertical levels
42	REAL, POINTER, DIMENSION(:) :: pt_b ! Pointer for describing the vertical levels
43	REAL, POINTER, DIMENSION(:,:,:) :: pt_out ! The massvar distributions, DIMENSION(klon, klev_src, 12)
44	REAL, DIMENSION(klon,12), INTENT(OUT) :: psurf ! Surface pression for 12 months
45	REAL, DIMENSION(klon,12), INTENT(OUT) :: load ! Aerosol mass load in each column for 12 months
46
47	! Local variables
48	CHARACTER(len=4) :: cyear
49	REAL, POINTER, DIMENSION(:,:,:) :: pt_2
50	REAL, DIMENSION(klon,12) :: psurf2, load2
51	INTEGER :: iyr1, iyr2, klev_src2
52	INTEGER :: it, k, i
53	LOGICAL, PARAMETER :: lonlyone=.FALSE.
54
55	!****************************************************************************************
56	! Read data depending on aer_type
57	!
58	!****************************************************************************************
59
60	IF (type == 'actuel') THEN
61	! Read and return data for year 1980
62	!****************************************************************************************
63	cyear='1980'
64	! get_aero_fromfile returns pt_out allocated and initialized with data for 12 month
65	! pt_out has dimensions (klon, klev_src, 12)
66	CALL get_aero_fromfile(name_aero, cyear, filename, klev_src, pt_ap, pt_b, pt_out, psurf, load)
67
68
69	ELSE IF (type == 'preind') THEN
70	! Read and return data from file with suffix .nat
71	!****************************************************************************************
72	cyear='.nat'
73	! get_aero_fromfile returns pt_out allocated and initialized with data for 12 month
74	! pt_out has dimensions (klon, klev_src, 12)
75	CALL get_aero_fromfile(name_aero, cyear, filename, klev_src, pt_ap, pt_b, pt_out, psurf, load)
76
77	ELSE IF (type == 'annuel') THEN
78	! Read and return data from scenario annual files
79	!****************************************************************************************
80	WRITE(cyear,'(I4)') iyr_in
81	WRITE(lunout,*) 'get_aero 3 iyr_in=', iyr_in,' ',cyear
82	! get_aero_fromfile returns pt_out allocated and initialized with data for nbr_tsteps month
83	! pt_out has dimensions (klon, klev_src, 12)
84	CALL get_aero_fromfile(name_aero, cyear, filename, klev_src, pt_ap, pt_b, pt_out, psurf, load)
85
86	ELSE IF (type == 'scenario') THEN
87	! Read data depending on actual year and interpolate if necessary
88	!****************************************************************************************
89	IF (iyr_in .LT. 1850) THEN
90	cyear='.nat'
91	WRITE(lunout,*) 'get_aero 1 iyr_in=', iyr_in,' ',cyear
92	! get_aero_fromfile returns pt_out allocated and initialized with data for 12 month
93	! pt_out has dimensions (klon, klev_src, 12)
94	CALL get_aero_fromfile(name_aero, cyear, filename, klev_src, pt_ap, pt_b, pt_out, psurf, load)
95
96	ELSE IF (iyr_in .GE. 2100) THEN
97	cyear='2100'
98	WRITE(lunout,*) 'get_aero 2 iyr_in=', iyr_in,' ',cyear
99	! get_aero_fromfile returns pt_out allocated and initialized with data for 12 month
100	! pt_out has dimensions (klon, klev_src, 12)
101	CALL get_aero_fromfile(name_aero, cyear, filename, klev_src, pt_ap, pt_b, pt_out, psurf, load)
102
103	ELSE
104	! Read data from 2 decades and interpolate to actual year
105	! a) from actual 10-yr-period
106	IF (iyr_in.LT.1900) THEN
107	iyr1 = 1850
108	iyr2 = 1900
109	ELSE IF (iyr_in.GE.1900.AND.iyr_in.LT.1920) THEN
110	iyr1 = 1900
111	iyr2 = 1920
112	ELSE
113	iyr1 = INT(iyr_in/10)*10
114	iyr2 = INT(1+iyr_in/10)*10
115	ENDIF
116
117	WRITE(cyear,'(I4)') iyr1
118	WRITE(lunout,*) 'get_aero 3 iyr_in=', iyr_in,' ',cyear
119	! get_aero_fromfile returns pt_out allocated and initialized with data for 12 month
120	! pt_out has dimensions (klon, klev_src, 12)
121	CALL get_aero_fromfile(name_aero, cyear, filename, klev_src, pt_ap, pt_b, pt_out, psurf, load)
122
123	! If to read two decades:
124	IF (.NOT.lonlyone) THEN
125
126	! b) from the next following one
127	WRITE(cyear,'(I4)') iyr2
128	WRITE(lunout,*) 'get_aero 4 iyr_in=', iyr_in,' ',cyear
129
130	NULLIFY(pt_2)
131	! get_aero_fromfile returns pt_2 allocated and initialized with data for 12 month
132	! pt_2 has dimensions (klon, klev_src, 12)
133	CALL get_aero_fromfile(name_aero, cyear, filename, klev_src2, pt_ap, pt_b, pt_2, psurf2, load2)
134	! Test for same number of vertical levels
135	IF (klev_src /= klev_src2) THEN
136	WRITE(lunout,*) 'Two aerosols files with different number of vertical levels is not allowded'
137	CALL abort_physic('readaersosol','Error in number of vertical levels',1)
138	END IF
139
140	! Linare interpolate to the actual year:
141	DO it=1,12
142	DO k=1,klev_src
143	DO i = 1, klon
144	pt_out(i,k,it) = &
145	pt_out(i,k,it) - REAL(iyr_in-iyr1)/REAL(iyr2-iyr1) * &
146	(pt_out(i,k,it) - pt_2(i,k,it))
147	END DO
148	END DO
149
150	DO i = 1, klon
151	psurf(i,it) = &
152	psurf(i,it) - REAL(iyr_in-iyr1)/REAL(iyr2-iyr1) * &
153	(psurf(i,it) - psurf2(i,it))
154
155	load(i,it) = &
156	load(i,it) - REAL(iyr_in-iyr1)/REAL(iyr2-iyr1) * &
157	(load(i,it) - load2(i,it))
158	END DO
159	END DO
160
161	! Deallocate pt_2 no more needed
162	DEALLOCATE(pt_2)
163
164	END IF ! lonlyone
165	END IF ! iyr_in .LT. 1850
166
167	ELSE
168	WRITE(lunout,*)'This option is not implemented : aer_type = ', type,' name_aero=',name_aero
169	CALL abort_physic('readaerosol','Error : aer_type parameter not accepted',1)
170	END IF ! type
171
172
173	END SUBROUTINE readaerosol
174
175
176	SUBROUTINE init_aero_fromfile(flag_aerosol)
177	USE netcdf
178	USE mod_phys_lmdz_para
179	USE mod_grid_phy_lmdz, ONLY: grid_type, unstructured
180	#ifdef CPP_XIOS
181	USE xios
182	#endif
183	IMPLICIT NONE
184	INTEGER, INTENT(IN) :: flag_aerosol
185	#ifdef CPP_XIOS
186	REAL,ALLOCATABLE :: lat_src(:)
187	REAL,ALLOCATABLE :: lon_src(:)
188	CHARACTER(LEN=*),PARAMETER :: file_aerosol='aerosols.nat.nc'
189	CHARACTER(LEN=*),PARAMETER :: file_so4='so4.nat.nc'
190	INTEGER :: klev_src
191	INTEGER :: ierr ,ncid, dimID, varid
192	REAL :: null_array(0)
193
194	IF (flag_aerosol>0 .AND. grid_type==unstructured) THEN
195
196	IF (is_omp_root) THEN
197
198	IF (is_mpi_root) THEN
199
200	IF (nf90_open(TRIM(file_aerosol), NF90_NOWRITE, ncid) /= NF90_NOERR) THEN
201	CALL check_err( nf90_open(TRIM(file_so4), NF90_NOWRITE, ncid), "pb open "//trim(file_so4) )
202	ENDIF
203
204	! Read and test longitudes
205	CALL check_err( nf90_inq_dimid(ncid, "lon", dimID),"pb inq dim lon")
206	CALL check_err( nf90_inquire_dimension(ncid, dimID, len = nbp_lon_src),"pb inq dim lon")
207	CALL check_err( nf90_inq_varid(ncid, 'lon', varid),"pb inq lon" )
208	ALLOCATE(lon_src(nbp_lon_src))
209	CALL check_err( nf90_get_var(ncid, varid, lon_src(:)),"pb get lon" )
210
211	! Read and test latitudes
212	CALL check_err( nf90_inq_dimid(ncid, "lat", dimID),"pb inq dim lat")
213	CALL check_err( nf90_inquire_dimension(ncid, dimID, len = nbp_lat_src),"pb inq dim lat")
214	CALL check_err( nf90_inq_varid(ncid, 'lat', varid),"pb inq lat" )
215	ALLOCATE(lat_src(nbp_lat_src))
216	CALL check_err( nf90_get_var(ncid, varid, lat_src(:)),"pb get lat" )
217	IF (nf90_inq_dimid(ncid, 'lev', dimid) /= NF90_NOERR) THEN
218	IF (nf90_inq_dimid(ncid, 'presnivs', dimid)/= NF90_NOERR) THEN
219	CALL check_err(nf90_inq_dimid(ncid, 'PRESNIVS', dimid),'dimension lev,PRESNIVS or presnivs not in file')
220	ENDIF
221	ENDIF
222	CALL check_err( nf90_inquire_dimension(ncid, dimid, len = klev_src),"pb inq dim for PRESNIVS or lev" )
223	CALL check_err( nf90_close(ncid),"pb in close" )
224	ENDIF
225
226	CALL bcast_mpi(nbp_lat_src)
227	CALL bcast_mpi(nbp_lon_src)
228	CALL bcast_mpi(klev_src)
229
230	IF (is_mpi_root ) THEN
231	CALL xios_set_domain_attr("domain_aerosol",nj_glo=nbp_lat_src, nj=nbp_lat_src, jbegin=0, latvalue_1d=lat_src)
232	CALL xios_set_domain_attr("domain_aerosol",ni_glo=nbp_lon_src, ni=nbp_lon_src, ibegin=0, lonvalue_1d=lon_src)
233	ELSE
234	CALL xios_set_domain_attr("domain_aerosol",nj_glo=nbp_lat_src, nj=0, jbegin=0, latvalue_1d=null_array )
235	CALL xios_set_domain_attr("domain_aerosol",ni_glo=nbp_lon_src, ni=0, ibegin=0, lonvalue_1d=null_array)
236	ENDIF
237	CALL xios_set_axis_attr("axis_aerosol",n_glo=klev_src)
238	CALL xios_set_fieldgroup_attr("aerosols", enabled=.TRUE.)
239
240	ENDIF
241
242	ENDIF
243	#endif
244	END SUBROUTINE init_aero_fromfile
245
246
247
248
249	SUBROUTINE get_aero_fromfile(varname, cyr, filename, klev_src, pt_ap, pt_b, pt_year, psurf_out, load_out)
250	!****************************************************************************************
251	! Read 12 month aerosol from file and distribute to local process on physical grid.
252	! Vertical levels, klev_src, may differ from model levels if new file format.
253	!
254	! For mpi_root and master thread :
255	! 1) Open file
256	! 2) Find vertical dimension klev_src
257	! 3) Read field month by month
258	! 4) Close file
259	! 5) Transform the global field from 2D(nbp_lon,nbp_lat) to 1D(klon_glo)
260	! - Also the levels and the latitudes have to be inversed
261	!
262	! For all processes and threads :
263	! 6) Scatter global field(klon_glo) to local process domain(klon)
264	! 7) Test for negative values
265	!****************************************************************************************
266
267	USE netcdf
268	USE dimphy
269	USE mod_grid_phy_lmdz, ONLY: nbp_lon_=>nbp_lon, nbp_lat_=>nbp_lat, klon_glo, &
270	grid2Dto1D_glo, grid_type, unstructured
271	USE mod_phys_lmdz_para
272	USE iophy, ONLY : io_lon, io_lat
273	USE print_control_mod, ONLY: lunout
274	#ifdef CPP_XIOS
275	USE xios
276	#endif
277	IMPLICIT NONE
278
279	! Input argumets
280	CHARACTER(len=7), INTENT(IN) :: varname
281	CHARACTER(len=4), INTENT(IN) :: cyr
282	CHARACTER(len=8), INTENT(IN) :: filename
283
284	! Output arguments
285	INTEGER, INTENT(OUT) :: klev_src ! Number of vertical levels in file
286	REAL, POINTER, DIMENSION(:) :: pt_ap ! Pointer for describing the vertical levels
287	REAL, POINTER, DIMENSION(:) :: pt_b ! Pointer for describing the vertical levels
288	REAL, POINTER, DIMENSION(:,:,:) :: pt_year ! Pointer-variabale from file, 12 month, grid : klon,klev_src
289	REAL, POINTER, DIMENSION(:,:,:) :: pt_year_mpi ! Pointer-variabale from file, 12 month, grid : klon,klev_src
290	REAL, DIMENSION(klon,12), INTENT(OUT) :: psurf_out ! Surface pression for 12 months
291	REAL, DIMENSION(klon_mpi,12) :: psurf_out_mpi ! Surface pression for 12 months
292	REAL, DIMENSION(klon,12), INTENT(OUT) :: load_out ! Aerosol mass load in each column
293	REAL, DIMENSION(klon_mpi,12) :: load_out_mpi ! Aerosol mass load in each column
294	INTEGER :: nbr_tsteps ! number of month in file read
295
296	! Local variables
297	CHARACTER(len=30) :: fname
298	CHARACTER(len=30) :: cvar
299	INTEGER :: ncid, dimid, varid
300	INTEGER :: imth, i, j, k, ierr
301	REAL :: npole, spole
302	REAL, ALLOCATABLE, DIMENSION(:,:,:) :: varmth
303	REAL, ALLOCATABLE, DIMENSION(:,:,:,:) :: varyear ! Global variable read from file, 12 month
304	REAL, ALLOCATABLE, DIMENSION(:,:,:) :: varyear_glo1D !(klon_glo, klev_src, 12)
305	REAL, ALLOCATABLE, DIMENSION(:) :: varktmp
306
307	REAL, ALLOCATABLE :: psurf_glo2D(:,:,:) ! Surface pression for 12 months on dynamics global grid
308	REAL, DIMENSION(klon_glo,12) :: psurf_glo1D ! -"- on physical global grid
309	REAL, ALLOCATABLE :: load_glo2D(:,:,:) ! Load for 12 months on dynamics global grid
310	REAL, DIMENSION(klon_glo,12) :: load_glo1D ! -"- on physical global grid
311	REAL, ALLOCATABLE, DIMENSION(:,:) :: vartmp
312	REAL, ALLOCATABLE,DIMENSION(:) :: lon_src ! longitudes in file
313	REAL, ALLOCATABLE,DIMENSION(:) :: lat_src, lat_src_inv ! latitudes in file
314	LOGICAL :: new_file ! true if new file format detected
315	LOGICAL :: invert_lat ! true if the field has to be inverted for latitudes
316	INTEGER :: nbp_lon, nbp_lat
317	LOGICAL,SAVE :: first=.TRUE.
318	!$OMP THREADPRIVATE(first)
319
320	IF (grid_type==unstructured) THEN
321	nbp_lon=nbp_lon_src
322	nbp_lat=nbp_lat_src
323	ELSE
324	nbp_lon=nbp_lon_
325	nbp_lat=nbp_lat_
326	ENDIF
327
328	IF (is_mpi_root) THEN
329
330	ALLOCATE(psurf_glo2D(nbp_lon,nbp_lat,12))
331	ALLOCATE(load_glo2D(nbp_lon,nbp_lat,12))
332	ALLOCATE(vartmp(nbp_lon,nbp_lat))
333	ALLOCATE(lon_src(nbp_lon))
334	ALLOCATE(lat_src(nbp_lat))
335	ALLOCATE(lat_src_inv(nbp_lat))
336	ELSE
337	ALLOCATE(varyear(0,0,0,0))
338	ALLOCATE(psurf_glo2D(0,0,0))
339	ALLOCATE(load_glo2D(0,0,0))
340	ENDIF
341
342	! Deallocate pointers
343	IF (ASSOCIATED(pt_ap)) DEALLOCATE(pt_ap)
344	IF (ASSOCIATED(pt_b)) DEALLOCATE(pt_b)
345
346	IF (is_mpi_root .AND. is_omp_root) THEN
347
348	! 1) Open file
349	!****************************************************************************************
350	! Add suffix to filename
351	fname = trim(filename)//cyr//'.nc'
352
353	WRITE(lunout,*) 'reading variable ',TRIM(varname),' in file ', TRIM(fname)
354	CALL check_err( nf90_open(TRIM(fname), NF90_NOWRITE, ncid), "pb open "//trim(fname) )
355
356
357	IF (grid_type/=unstructured) THEN
358
359	! Test for equal longitudes and latitudes in file and model
360	!****************************************************************************************
361	! Read and test longitudes
362	CALL check_err( nf90_inq_varid(ncid, 'lon', varid),"pb inq lon" )
363	CALL check_err( nf90_get_var(ncid, varid, lon_src(:)),"pb get lon" )
364
365	IF (maxval(ABS(lon_src - io_lon)) > 0.001) THEN
366	WRITE(lunout,*) 'Problem in longitudes read from file : ',TRIM(fname)
367	WRITE(lunout,*) 'longitudes in file ', TRIM(fname),' : ', lon_src
368	WRITE(lunout,*) 'longitudes in model :', io_lon
369
370	CALL abort_physic('get_aero_fromfile', 'longitudes are not the same in file and model',1)
371	END IF
372
373	! Read and test latitudes
374	CALL check_err( nf90_inq_varid(ncid, 'lat', varid),"pb inq lat" )
375	CALL check_err( nf90_get_var(ncid, varid, lat_src(:)),"pb get lat" )
376
377	! Invert source latitudes
378	DO j = 1, nbp_lat
379	lat_src_inv(j) = lat_src(nbp_lat +1 -j)
380	END DO
381
382	IF (maxval(ABS(lat_src - io_lat)) < 0.001) THEN
383	! Latitudes are the same
384	invert_lat=.FALSE.
385	ELSE IF (maxval(ABS(lat_src_inv - io_lat)) < 0.001) THEN
386	! Inverted source latitudes correspond to model latitudes
387	WRITE(lunout,*) 'latitudes will be inverted for file : ',TRIM(fname)
388	invert_lat=.TRUE.
389	ELSE
390	WRITE(lunout,*) 'Problem in latitudes read from file : ',TRIM(fname)
391	WRITE(lunout,*) 'latitudes in file ', TRIM(fname),' : ', lat_src
392	WRITE(lunout,*) 'latitudes in model :', io_lat
393	CALL abort_physic('get_aero_fromfile', 'latitudes do not correspond between file and model',1)
394	END IF
395	ENDIF
396
397	! 2) Check if old or new file is avalabale.
398	! New type of file should contain the dimension 'lev'
399	! Old type of file should contain the dimension 'PRESNIVS'
400	!****************************************************************************************
401	ierr = nf90_inq_dimid(ncid, 'lev', dimid)
402	IF (ierr /= NF90_NOERR) THEN
403	! Coordinate axe lev not found. Check for presnivs.
404	ierr = nf90_inq_dimid(ncid, 'presnivs', dimid)
405	IF (ierr /= NF90_NOERR) THEN
406	ierr = nf90_inq_dimid(ncid, 'PRESNIVS', dimid)
407	IF (ierr /= NF90_NOERR) THEN
408	! Dimension PRESNIVS not found either
409	CALL abort_physic('get_aero_fromfile', 'dimension lev,PRESNIVS or presnivs not in file',1)
410	ELSE
411	! Old file found
412	new_file=.FALSE.
413	WRITE(lunout,*) 'Vertical interpolation for ',TRIM(varname),' will not be done'
414	END IF
415	ELSE
416	! New file found
417	new_file=.TRUE.
418	WRITE(lunout,*) 'Vertical interpolation for ',TRIM(varname),' will be done'
419	ENDIF
420	ELSE
421	! New file found
422	new_file=.TRUE.
423	WRITE(lunout,*) 'Vertical interpolation for ',TRIM(varname),' will be done'
424	END IF
425
426	! 2) Find vertical dimension klev_src
427	!****************************************************************************************
428	CALL check_err( nf90_inquire_dimension(ncid, dimid, len = klev_src),"pb inq dim for PRESNIVS or lev" )
429
430	! Allocate variables depending on the number of vertical levels
431	ALLOCATE(varmth(nbp_lon,nbp_lat, klev_src), varyear(nbp_lon,nbp_lat, klev_src, 12), stat=ierr)
432	IF (ierr /= 0) CALL abort_physic('get_aero_fromfile', 'pb in allocation 1',1)
433
434	ALLOCATE(pt_ap(klev_src), pt_b(klev_src), varktmp(klev_src), stat=ierr)
435	IF (ierr /= 0) CALL abort_physic('get_aero_fromfile', 'pb in allocation 2',1)
436
437	! 3) Read all variables from file
438	! There is 2 options for the file structure :
439	! new_file=TRUE : read varyear, ps, pt_ap and pt_b
440	! new_file=FALSE : read varyear month by month
441	!****************************************************************************************
442
443	IF (new_file) THEN
444	! ++) Check number of month in file opened
445	!**************************************************************************************************
446	ierr = nf90_inq_dimid(ncid, 'TIME',dimid)
447	if (ierr /= NF90_NOERR) THEN
448	ierr = nf90_inq_dimid(ncid, 'time_counter', dimid)
449	ENDIF
450	CALL check_err( nf90_inquire_dimension(ncid, dimid, len = nbr_tsteps),"pb inq dim TIME or time_counter" )
451	! IF (nbr_tsteps /= 12 .AND. nbr_tsteps /= 14) THEN
452	IF (nbr_tsteps /= 12 ) THEN
453	CALL abort_physic('get_aero_fromfile', 'not the right number of months in aerosol file read (should be 12 for the moment)' &
454	,1)
455	ENDIF
456
457	! ++) Read the aerosol concentration month by month and concatenate to total variable varyear
458	!****************************************************************************************
459	! Get variable id
460	!CALL check_err( nf90_inq_varid(ncid, TRIM(varname), varid),"pb inq var "//TRIM(varname) )
461	print *,'readaerosol ', TRIM(varname)
462	IF ( nf90_inq_varid(ncid, TRIM(varname), varid) /= NF90_NOERR ) THEN
463	! Variable is not there
464	WRITE(lunout,*) 'Attention '//TRIM(varname)//' is not in aerosol input file'
465	varyear(:,:,:,:)=0.0
466	ELSE
467	! Get the variable
468	CALL check_err( nf90_get_var(ncid, varid, varyear(:,:,:,:)),"pb get var "//TRIM(varname) )
469	ENDIF
470
471	! ++) Read surface pression, 12 month in one variable
472	!****************************************************************************************
473	! Get variable id
474	CALL check_err( nf90_inq_varid(ncid, "ps", varid),"pb inq var ps" )
475	! Get the variable
476	CALL check_err( nf90_get_var(ncid, varid, psurf_glo2D),"pb get var ps" )
477
478	! ++) Read mass load, 12 month in one variable
479	!****************************************************************************************
480	! Get variable id
481	!CALL check_err( nf90_inq_varid(ncid, "load_"//TRIM(varname), varid) ,"pb inq var load_"//TRIM(varname))
482	IF ( nf90_inq_varid(ncid, "load_"//TRIM(varname), varid) /= NF90_NOERR ) THEN
483	WRITE(lunout,*) 'Attention load_'//TRIM(varname)//' is not in aerosol input file'
484	load_glo2D(:,:,:)=0.0
485	ELSE
486	! Get the variable
487	CALL check_err( nf90_get_var(ncid, varid, load_glo2D),"pb get var load_"//TRIM(varname) )
488	ENDIF
489
490	! ++) Read ap
491	!****************************************************************************************
492	! Get variable id
493	CALL check_err( nf90_inq_varid(ncid, "ap", varid),"pb inq var ap" )
494	! Get the variable
495	CALL check_err( nf90_get_var(ncid, varid, pt_ap),"pb get var ap" )
496
497	! ++) Read b
498	!****************************************************************************************
499	! Get variable id
500	CALL check_err( nf90_inq_varid(ncid, "b", varid),"pb inq var b" )
501	! Get the variable
502	CALL check_err( nf90_get_var(ncid, varid, pt_b),"pb get var b" )
503
504
505
506	ELSE ! old file
507
508	! ++) Read the aerosol concentration month by month and concatenate to total variable varyear
509	!****************************************************************************************
510	DO imth=1, 12
511	IF (imth.EQ.1) THEN
512	cvar=TRIM(varname)//'JAN'
513	ELSE IF (imth.EQ.2) THEN
514	cvar=TRIM(varname)//'FEB'
515	ELSE IF (imth.EQ.3) THEN
516	cvar=TRIM(varname)//'MAR'
517	ELSE IF (imth.EQ.4) THEN
518	cvar=TRIM(varname)//'APR'
519	ELSE IF (imth.EQ.5) THEN
520	cvar=TRIM(varname)//'MAY'
521	ELSE IF (imth.EQ.6) THEN
522	cvar=TRIM(varname)//'JUN'
523	ELSE IF (imth.EQ.7) THEN
524	cvar=TRIM(varname)//'JUL'
525	ELSE IF (imth.EQ.8) THEN
526	cvar=TRIM(varname)//'AUG'
527	ELSE IF (imth.EQ.9) THEN
528	cvar=TRIM(varname)//'SEP'
529	ELSE IF (imth.EQ.10) THEN
530	cvar=TRIM(varname)//'OCT'
531	ELSE IF (imth.EQ.11) THEN
532	cvar=TRIM(varname)//'NOV'
533	ELSE IF (imth.EQ.12) THEN
534	cvar=TRIM(varname)//'DEC'
535	END IF
536
537	! Get variable id
538	CALL check_err( nf90_inq_varid(ncid, TRIM(cvar), varid),"pb inq var "//TRIM(cvar) )
539
540	! Get the variable
541	CALL check_err( nf90_get_var(ncid, varid, varmth),"pb get var "//TRIM(cvar) )
542
543	! Store in variable for the whole year
544	varyear(:,:,:,imth)=varmth(:,:,:)
545
546	END DO
547
548	! Putting dummy
549	psurf_glo2D(:,:,:) = not_valid
550	load_glo2D(:,:,:) = not_valid
551	pt_ap(:) = not_valid
552	pt_b(:) = not_valid
553
554	END IF
555
556	! 4) Close file
557	!****************************************************************************************
558	CALL check_err( nf90_close(ncid),"pb in close" )
559
560
561	! 5) Transform the global field from 2D(nbp_lon,nbp_lat) to 1D(klon_glo)
562	!****************************************************************************************
563	! Test if vertical levels have to be inversed
564
565	IF ((pt_b(1) < pt_b(klev_src)) .OR. .NOT. new_file) THEN
566	! WRITE(lunout,*) 'Vertical axis in file ',TRIM(fname), ' needs to be inverted'
567	! WRITE(lunout,*) 'before pt_ap = ', pt_ap
568	! WRITE(lunout,*) 'before pt_b = ', pt_b
569
570	! Inverse vertical levels for varyear
571	DO imth=1, 12
572	varmth(:,:,:) = varyear(:,:,:,imth) ! use varmth temporarly
573	DO k=1, klev_src
574	DO j=1, nbp_lat
575	DO i=1, nbp_lon
576	varyear(i,j,k,imth) = varmth(i,j,klev_src+1-k)
577	END DO
578	END DO
579	END DO
580	END DO
581
582	! Inverte vertical axes for pt_ap and pt_b
583	varktmp(:) = pt_ap(:)
584	DO k=1, klev_src
585	pt_ap(k) = varktmp(klev_src+1-k)
586	END DO
587
588	varktmp(:) = pt_b(:)
589	DO k=1, klev_src
590	pt_b(k) = varktmp(klev_src+1-k)
591	END DO
592	WRITE(lunout,*) 'after pt_ap = ', pt_ap
593	WRITE(lunout,*) 'after pt_b = ', pt_b
594
595	ELSE
596	WRITE(lunout,*) 'Vertical axis in file ',TRIM(fname), ' is ok, no vertical inversion is done'
597	WRITE(lunout,*) 'pt_ap = ', pt_ap
598	WRITE(lunout,*) 'pt_b = ', pt_b
599	END IF
600
601
602	IF (grid_type/=unstructured) THEN
603	! - Invert latitudes if necessary
604	DO imth=1, 12
605	IF (invert_lat) THEN
606
607	! Invert latitudes for the variable
608	varmth(:,:,:) = varyear(:,:,:,imth) ! use varmth temporarly
609	DO k=1,klev_src
610	DO j=1,nbp_lat
611	DO i=1,nbp_lon
612	varyear(i,j,k,imth) = varmth(i,nbp_lat+1-j,k)
613	END DO
614	END DO
615	END DO
616
617	! Invert latitudes for surface pressure
618	vartmp(:,:) = psurf_glo2D(:,:,imth)
619	DO j=1,nbp_lat
620	DO i=1,nbp_lon
621	psurf_glo2D(i,j,imth)= vartmp(i,nbp_lat+1-j)
622	END DO
623	END DO
624
625	! Invert latitudes for the load
626	vartmp(:,:) = load_glo2D(:,:,imth)
627	DO j=1,nbp_lat
628	DO i=1,nbp_lon
629	load_glo2D(i,j,imth)= vartmp(i,nbp_lat+1-j)
630	END DO
631	END DO
632	END IF ! invert_lat
633
634	! Do zonal mead at poles and distribut at whole first and last latitude
635	DO k=1, klev_src
636	npole=0. ! North pole, j=1
637	spole=0. ! South pole, j=nbp_lat
638	DO i=1,nbp_lon
639	npole = npole + varyear(i,1,k,imth)
640	spole = spole + varyear(i,nbp_lat,k,imth)
641	END DO
642	npole = npole/REAL(nbp_lon)
643	spole = spole/REAL(nbp_lon)
644	varyear(:,1, k,imth) = npole
645	varyear(:,nbp_lat,k,imth) = spole
646	END DO
647	END DO ! imth
648
649	ALLOCATE(varyear_glo1D(klon_glo, klev_src, 12), stat=ierr)
650	IF (ierr /= 0) CALL abort_physic('get_aero_fromfile', 'pb in allocation 3',1)
651
652	! Transform from 2D to 1D field
653	CALL grid2Dto1D_glo(varyear,varyear_glo1D)
654	CALL grid2Dto1D_glo(psurf_glo2D,psurf_glo1D)
655	CALL grid2Dto1D_glo(load_glo2D,load_glo1D)
656
657	ENDIF
658
659	ELSE
660	ALLOCATE(varyear_glo1D(0,0,0))
661	END IF ! is_mpi_root .AND. is_omp_root
662
663	!$OMP BARRIER
664
665	! 6) Distribute to all processes
666	! Scatter global field(klon_glo) to local process domain(klon)
667	! and distribute klev_src to all processes
668	!****************************************************************************************
669
670	! Distribute klev_src
671	CALL bcast(klev_src)
672
673	! Allocate and distribute pt_ap and pt_b
674	IF (.NOT. ASSOCIATED(pt_ap)) THEN ! if pt_ap is allocated also pt_b is allocated
675	ALLOCATE(pt_ap(klev_src), pt_b(klev_src), stat=ierr)
676	IF (ierr /= 0) CALL abort_physic('get_aero_fromfile', 'pb in allocation 4',1)
677	END IF
678	CALL bcast(pt_ap)
679	CALL bcast(pt_b)
680
681	! Allocate space for output pointer variable at local process
682	IF (ASSOCIATED(pt_year)) DEALLOCATE(pt_year)
683	ALLOCATE(pt_year(klon, klev_src, 12), stat=ierr)
684	ALLOCATE(pt_year_mpi(klon_mpi, klev_src, 12), stat=ierr)
685	IF (ierr /= 0) CALL abort_physic('get_aero_fromfile', 'pb in allocation 5',1)
686
687	IF (grid_type==unstructured) THEN
688	#ifdef CPP_XIOS
689	IF (is_omp_master) THEN
690	CALL xios_send_field(TRIM(varname)//"_in",varyear)
691	CALL xios_recv_field(TRIM(varname)//"_out",pt_year_mpi)
692	CALL xios_send_field("load_"//TRIM(varname)//"_in",load_glo2D)
693	CALL xios_recv_field("load_"//TRIM(varname)//"_out",load_out_mpi)
694	IF (first) THEN
695	ALLOCATE(psurf_interp(klon_mpi,12))
696	CALL xios_send_field("psurf_aerosol_in",psurf_glo2D)
697	CALL xios_recv_field("psurf_aerosol_out",psurf_interp)
698	ENDIF
699	ENDIF
700	CALL scatter_omp(pt_year_mpi,pt_year)
701	CALL scatter_omp(load_out_mpi,load_out)
702	CALL scatter_omp(psurf_interp,psurf_out)
703	first=.FALSE.
704	#endif
705	ELSE
706	! Scatter global field to local domain at local process
707	CALL scatter(varyear_glo1D, pt_year)
708	CALL scatter(psurf_glo1D, psurf_out)
709	CALL scatter(load_glo1D, load_out)
710	ENDIF
711	! 7) Test for negative values
712	!****************************************************************************************
713	IF (MINVAL(pt_year) < 0.) THEN
714	WRITE(lunout,*) 'Warning! Negative values read from file :', fname
715	END IF
716
717	END SUBROUTINE get_aero_fromfile
718
719
720	SUBROUTINE check_err(status,text)
721	USE netcdf
722	USE print_control_mod, ONLY: lunout
723	IMPLICIT NONE
724
725	INTEGER, INTENT (IN) :: status
726	CHARACTER(len=*), INTENT (IN), OPTIONAL :: text
727
728	IF (status /= NF90_NOERR) THEN
729	WRITE(lunout,*) 'Error in get_aero_fromfile, netcdf error code = ',status
730	IF (PRESENT(text)) THEN
731	WRITE(lunout,*) 'Error in get_aero_fromfile : ',text
732	END IF
733	CALL abort_physic('get_aero_fromfile',trim(nf90_strerror(status)),1)
734	END IF
735
736	END SUBROUTINE check_err
737
738
739	END MODULE readaerosol_mod

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