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limit_read_mod.f90 @ 5441

Last change on this file since 5441 was 5268, checked in by abarral, 2 months ago
.f90 <-> .F90 depending on cpp key use
Property copyright set to Name of program: LMDZ Creation date: 1984 Version: LMDZ5 License: CeCILL version 2 Holder: Laboratoire de m\'et\'eorologie dynamique, CNRS, UMR 8539 See the license file in the root directory Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 17.8 KB

Line
1	!
2	! $Id: limit_read_mod.f90 5268 2024-10-23 17:02:39Z fhourdin $
3	!
4	MODULE limit_read_mod
5	!
6	! This module reads the fichier "limit.nc" containing fields for surface forcing.
7	!
8	! Module subroutines :
9	! limit_read_frac : call limit_read_tot and return the fractions
10	! limit_read_rug_alb : return rugosity and albedo, if coupled ocean call limit_read_tot first
11	! limit_read_sst : return sea ice temperature
12	! limit_read_tot : read limit.nc and store the fields in local modules variables
13	!
14	IMPLICIT NONE
15
16	REAL, ALLOCATABLE, DIMENSION(:,:), SAVE, PRIVATE :: pctsrf
17	!$OMP THREADPRIVATE(pctsrf)
18	REAL, ALLOCATABLE, DIMENSION(:), SAVE, PRIVATE :: rugos
19	!$OMP THREADPRIVATE(rugos)
20	REAL, ALLOCATABLE, DIMENSION(:), SAVE, PRIVATE :: albedo
21	!$OMP THREADPRIVATE(albedo)
22	REAL, ALLOCATABLE, DIMENSION(:), SAVE, PRIVATE :: sst
23	!$OMP THREADPRIVATE(sst)
24	LOGICAL,SAVE :: read_continents=.FALSE.
25	!$OMP THREADPRIVATE(read_continents)
26
27	CONTAINS
28	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
29	!!
30	!! Public subroutines :
31	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
32
33
34	SUBROUTINE init_limit_read(first_day)
35	USE mod_grid_phy_lmdz
36	USE surface_data
37	USE mod_phys_lmdz_para
38	USE lmdz_xios
39
40	IMPLICIT NONE
41	INTEGER, INTENT(IN) :: first_day
42
43
44	IF ( type_ocean /= 'couple') THEN
45	IF (grid_type==unstructured) THEN
46	IF (is_omp_master) CALL xios_set_file_attr("limit_read",enabled=.TRUE.,record_offset=first_day)
47	ENDIF
48	ENDIF
49
50	END SUBROUTINE init_limit_read
51
52	SUBROUTINE limit_read_frac(itime, dtime, jour, pctsrf_new, is_modified)
53	!
54	! This subroutine is called from "change_srf_frac" for case of
55	! ocean=force or from ocean_slab_frac for ocean=slab.
56	! The fraction for all sub-surfaces at actual time step is returned.
57
58	USE dimphy
59	USE indice_sol_mod
60
61	! Input arguments
62	!****************************************************************************************
63	INTEGER, INTENT(IN) :: itime ! time step
64	INTEGER, INTENT(IN) :: jour ! current day
65	REAL , INTENT(IN) :: dtime ! length of time step
66
67	! Output arguments
68	!****************************************************************************************
69	REAL, DIMENSION(klon,nbsrf), INTENT(OUT) :: pctsrf_new ! sub surface fractions
70	LOGICAL, INTENT(OUT) :: is_modified ! true if pctsrf is modified at this time step
71
72	! End declaration
73	!****************************************************************************************
74
75	! 1) Read file limit.nc
76	CALL limit_read_tot(itime, dtime, jour, is_modified)
77
78	! 2) Return the fraction read in limit_read_tot
79	pctsrf_new(:,:) = pctsrf(:,:)
80
81	END SUBROUTINE limit_read_frac
82
83	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
84
85	SUBROUTINE limit_read_rug_alb(itime, dtime, jour, &
86	knon, knindex, &
87	rugos_out, alb_out)
88	!
89	! This subroutine is called from surf_land_bucket.
90	! The flag "ok_veget" must can not be true. If coupled run, "ocean=couple"
91	! then this routine will call limit_read_tot.
92	!
93	USE dimphy
94	USE surface_data
95
96	! Input arguments
97	!****************************************************************************************
98	INTEGER, INTENT(IN) :: itime ! numero du pas de temps courant
99	INTEGER, INTENT(IN) :: jour ! jour a lire dans l'annee
100	REAL , INTENT(IN) :: dtime ! pas de temps de la physique (en s)
101	INTEGER, INTENT(IN) :: knon ! nomber of points on compressed grid
102	INTEGER, DIMENSION(klon), INTENT(IN) :: knindex ! grid point number for compressed grid
103	! Output arguments
104	!****************************************************************************************
105	REAL, DIMENSION(klon), INTENT(OUT) :: rugos_out
106	REAL, DIMENSION(klon), INTENT(OUT) :: alb_out
107
108	! Local variables
109	!****************************************************************************************
110	INTEGER :: i
111	LOGICAL :: is_modified
112	!****************************************************************************************
113
114	IF (type_ocean == 'couple'.OR. &
115	(type_ocean == 'slab' .AND. version_ocean == 'sicINT')) THEN
116	! limit.nc has not yet been read. Do it now!
117	CALL limit_read_tot(itime, dtime, jour, is_modified)
118	END IF
119
120	DO i=1,knon
121	rugos_out(i) = rugos(knindex(i))
122	alb_out(i) = albedo(knindex(i))
123	END DO
124
125	END SUBROUTINE limit_read_rug_alb
126
127	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
128
129	SUBROUTINE limit_read_sst(knon, knindex, sst_out)
130	!
131	! This subroutine returns the sea surface temperature already read from limit.nc.
132	!
133	USE dimphy, ONLY : klon
134
135	INTEGER, INTENT(IN) :: knon ! nomber of points on compressed grid
136	INTEGER, DIMENSION(klon), INTENT(IN) :: knindex ! grid point number for compressed grid
137	REAL, DIMENSION(klon), INTENT(OUT) :: sst_out
138
139	INTEGER :: i
140
141	DO i = 1, knon
142	sst_out(i) = sst(knindex(i))
143	END DO
144
145	END SUBROUTINE limit_read_sst
146
147	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
148	!!
149	!! Private subroutine :
150	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
151
152	SUBROUTINE limit_read_tot(itime, dtime, jour, is_modified)
153	!
154	! Read everything needed from limit.nc
155	!
156	! 0) Initialize
157	! 1) Open the file limit.nc, if it is time
158	! 2) Read fraction, if not type_ocean=couple
159	! 3) Read sea surface temperature, if not type_ocean=couple
160	! 4) Read albedo and rugosity for land surface, only in case of no vegetation model
161	! 5) Close file and distribuate variables to all processus
162
163	USE dimphy
164	USE mod_grid_phy_lmdz
165	USE mod_phys_lmdz_para
166	USE surface_data, ONLY : type_ocean, ok_veget
167	USE netcdf
168	USE indice_sol_mod
169	USE phys_cal_mod, ONLY : calend, year_len
170	USE print_control_mod, ONLY: lunout, prt_level
171	USE lmdz_xios, ONLY: xios_recv_field, using_xios
172
173	IMPLICIT NONE
174
175	! In- and ouput arguments
176	!****************************************************************************************
177	INTEGER, INTENT(IN) :: itime ! numero du pas de temps courant
178	INTEGER, INTENT(IN) :: jour ! jour a lire dans l'annee
179	REAL , INTENT(IN) :: dtime ! pas de temps de la physique (en s)
180
181	LOGICAL, INTENT(OUT) :: is_modified ! true if pctsrf is modified at this time step
182
183	! Locals variables with attribute SAVE
184	!****************************************************************************************
185	! frequence de lecture des conditions limites (en pas de physique)
186	INTEGER,SAVE :: lmt_pas
187	!$OMP THREADPRIVATE(lmt_pas)
188	LOGICAL, SAVE :: first_call=.TRUE.
189	!$OMP THREADPRIVATE(first_call)
190	INTEGER, SAVE :: jour_lu = -1
191	!$OMP THREADPRIVATE(jour_lu)
192	! Locals variables
193	!****************************************************************************************
194	INTEGER :: nid, nvarid, ndimid, nn
195	INTEGER :: ii, ierr
196	INTEGER, DIMENSION(2) :: start, epais
197	REAL, DIMENSION(klon_glo,nbsrf) :: pct_glo ! fraction at global grid
198	REAL, DIMENSION(klon_glo) :: sst_glo ! sea-surface temperature at global grid
199	REAL, DIMENSION(klon_glo) :: rug_glo ! rugosity at global grid
200	REAL, DIMENSION(klon_glo) :: alb_glo ! albedo at global grid
201
202	REAL, DIMENSION(klon_mpi,nbsrf) :: pct_mpi ! fraction at global grid
203	REAL, DIMENSION(klon_mpi) :: sst_mpi ! sea-surface temperature at global grid
204	REAL, DIMENSION(klon_mpi) :: rug_mpi ! rugosity at global grid
205	REAL, DIMENSION(klon_mpi) :: alb_mpi ! albedo at global grid
206
207	CHARACTER(len=20) :: modname='limit_read_mod'
208	CHARACTER(LEN=99) :: abort_message, calendar, str
209
210	! End declaration
211	!****************************************************************************************
212
213	!****************************************************************************************
214	! 0) Initialization
215	!
216	!****************************************************************************************
217	IF (first_call) THEN
218	first_call=.FALSE.
219	! calculate number of time steps for one day
220	lmt_pas = NINT(86400./dtime * 1.0)
221
222	! Allocate module save variables
223	IF ( type_ocean /= 'couple' ) THEN
224	ALLOCATE(pctsrf(klon,nbsrf), sst(klon), stat=ierr)
225	IF (ierr /= 0) CALL abort_physic(modname, 'PB in allocating pctsrf and sst',1)
226	END IF
227
228	IF ( .NOT. ok_veget ) THEN
229	ALLOCATE(rugos(klon), albedo(klon), stat=ierr)
230	IF (ierr /= 0) CALL abort_physic(modname, 'PB in allocating rugos and albedo',1)
231	END IF
232
233	!$OMP MASTER ! Only master thread
234	IF (is_mpi_root) THEN ! Only master processus
235	ierr = NF90_OPEN ('limit.nc', NF90_NOWRITE, nid)
236	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,&
237	'Pb d''ouverture du fichier de conditions aux limites',1)
238
239	!--- WARNING IF CALENDAR IS KNOWN AND DOES NOT MATCH THE ONE OF LMDZ
240	ierr=NF90_INQ_VARID(nid, 'TEMPS', nvarid)
241	ierr=NF90_GET_ATT(nid, nvarid, 'calendar', calendar)
242	IF(ierr==NF90_NOERR.AND.calendar/=calend.AND.prt_level>=1) THEN
243	WRITE(lunout,*)'BEWARE: gcm and limit.nc calendars differ: '
244	WRITE(lunout,*)' '//TRIM(calend)//' for gcm'
245	WRITE(lunout,*)' '//TRIM(calendar)//' for limit.nc file'
246	END IF
247
248	!--- ERROR IF FILE RECORDS NUMBER IS NOT EQUAL TO EXPECTED NUMBER OF DAYS
249	IF (grid_type==unstructured) THEN
250	ierr=NF90_INQ_DIMID(nid,"time_year",ndimid)
251	ELSE
252	ierr=NF90_INQUIRE(nid, UnlimitedDimID=ndimid)
253	ENDIF
254	ierr=NF90_INQUIRE_DIMENSION(nid, ndimid, len=nn)
255	WRITE(abort_message,'(a,2(i0,a))')'limit.nc records number (',nn,') does no'//&
256	't match year length (',year_len,')'
257	IF(nn/=year_len) CALL abort_physic(modname,abort_message,1)
258
259	!--- ERROR IF FILES AND LMDZ HORIZONTAL RESOLUTIONS DO NOT MATCH
260	IF (grid_type==unstructured) THEN
261	ierr=NF90_INQ_DIMID(nid, 'cell', ndimid)
262	ELSE
263	ierr=NF90_INQ_DIMID(nid, 'points_physiques', ndimid)
264	ENDIF
265	ierr=NF90_INQUIRE_DIMENSION(nid, ndimid, len=nn)
266	WRITE(abort_message,'(a,2(i0,a))')'limit.nc horizontal number of cells (',nn, &
267	') does not match LMDZ klon_glo (',klon_glo,')'
268	IF(nn/=klon_glo) CALL abort_physic(modname,abort_message,1)
269
270	ierr = NF90_CLOSE(nid)
271	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Pb when closing file', 1)
272	END IF ! is_mpi_root
273	!$OMP END MASTER
274	!$OMP BARRIER
275	END IF
276
277	!****************************************************************************************
278	! 1) Open the file limit.nc if it is the right moment to read, once a day.
279	! The file is read only by the master thread of the master mpi process(is_mpi_root)
280	! Check by the way if the number of records is correct.
281	!
282	!****************************************************************************************
283
284	is_modified = .FALSE.
285	!ym IF (MOD(itime-1, lmt_pas) == 0 .OR. jour_lu /= jour ) THEN ! time to read
286	! not REALLY PERIODIC
287	IF (MOD(itime-1, lmt_pas) == 0 .OR. (jour_lu /= jour .AND. grid_type /= unstructured)) THEN ! time to read
288	! IF (MOD(itime-1, lmt_pas) == 0) THEN ! time to read
289	jour_lu = jour
290	is_modified = .TRUE.
291
292	IF (grid_type==unstructured) THEN
293
294	IF ( type_ocean /= 'couple') THEN
295
296	IF (is_omp_master) CALL xios_recv_field("foce_limin",pct_mpi(:,is_oce))
297	IF (is_omp_master) CALL xios_recv_field("fsic_limin",pct_mpi(:,is_sic))
298	! IF (read_continents .OR. itime == 1) THEN
299	IF (is_omp_master) CALL xios_recv_field("fter_limin",pct_mpi(:,is_ter))
300	IF (is_omp_master) CALL xios_recv_field("flic_limin",pct_mpi(:,is_lic))
301	! ENDIF
302	ENDIF! type_ocean /= couple
303
304	IF ( type_ocean /= 'couple') THEN
305	IF (is_omp_master) CALL xios_recv_field("sst_limin",sst_mpi)
306	ENDIF
307
308	IF (.NOT. ok_veget) THEN
309	IF (is_omp_master) CALL xios_recv_field("alb_limin",alb_mpi)
310	IF (is_omp_master) CALL xios_recv_field("rug_limin",rug_mpi)
311	ENDIF
312
313	IF ( type_ocean /= 'couple') THEN
314	CALL Scatter_omp(sst_mpi,sst)
315	CALL Scatter_omp(pct_mpi(:,is_oce),pctsrf(:,is_oce))
316	CALL Scatter_omp(pct_mpi(:,is_sic),pctsrf(:,is_sic))
317	! IF (read_continents .OR. itime == 1) THEN
318	CALL Scatter_omp(pct_mpi(:,is_ter),pctsrf(:,is_ter))
319	CALL Scatter_omp(pct_mpi(:,is_lic),pctsrf(:,is_lic))
320	! END IF
321	END IF
322
323	IF (.NOT. ok_veget) THEN
324	CALL Scatter_omp(alb_mpi, albedo)
325	CALL Scatter_omp(rug_mpi, rugos)
326	END IF
327
328	ELSE ! grid_type==regular
329
330	!$OMP MASTER ! Only master thread
331	IF (is_mpi_root) THEN ! Only master processus!
332
333	ierr = NF90_OPEN ('limit.nc', NF90_NOWRITE, nid)
334	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,&
335	'Pb d''ouverture du fichier de conditions aux limites',1)
336
337	! La tranche de donnees a lire:
338	start(1) = 1
339	start(2) = jour
340	epais(1) = klon_glo
341	epais(2) = 1
342
343
344	!****************************************************************************************
345	! 2) Read fraction if not type_ocean=couple
346	!
347	!****************************************************************************************
348
349	IF ( type_ocean /= 'couple') THEN
350	!
351	! Ocean fraction
352	ierr = NF90_INQ_VARID(nid, 'FOCE', nvarid)
353	IF (ierr /= NF90_NOERR) CALL abort_physic(modname, 'Le champ <FOCE> est absent',1)
354
355	ierr = NF90_GET_VAR(nid,nvarid,pct_glo(:,is_oce),start,epais)
356	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Lecture echouee pour <FOCE>' ,1)
357	!
358	! Sea-ice fraction
359	ierr = NF90_INQ_VARID(nid, 'FSIC', nvarid)
360	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Le champ <FSIC> est absent',1)
361
362	ierr = NF90_GET_VAR(nid,nvarid,pct_glo(:,is_sic),start,epais)
363	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Lecture echouee pour <FSIC>' ,1)
364
365
366	! Read land and continentals fraction only if asked for
367	IF (read_continents .OR. itime == 1) THEN
368	!
369	! Land fraction
370	ierr = NF90_INQ_VARID(nid, 'FTER', nvarid)
371	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Le champ <FTER> est absent',1)
372
373	ierr = NF90_GET_VAR(nid,nvarid,pct_glo(:,is_ter),start,epais)
374	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Lecture echouee pour <FTER>',1)
375	!
376	! Continentale ice fraction
377	ierr = NF90_INQ_VARID(nid, 'FLIC', nvarid)
378	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Le champ <FLIC> est absent',1)
379
380	ierr = NF90_GET_VAR(nid,nvarid,pct_glo(:,is_lic),start,epais)
381	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Lecture echouee pour <FLIC>',1)
382	END IF
383
384	END IF ! type_ocean /= couple
385
386	!****************************************************************************************
387	! 3) Read sea-surface temperature, if not coupled ocean
388	!
389	!****************************************************************************************
390	IF ( type_ocean /= 'couple') THEN
391
392	ierr = NF90_INQ_VARID(nid, 'SST', nvarid)
393	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Le champ <SST> est absent',1)
394
395	ierr = NF90_GET_VAR(nid,nvarid,sst_glo,start,epais)
396	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Lecture echouee pour <SST>',1)
397
398	END IF
399
400	!****************************************************************************************
401	! 4) Read albedo and rugosity for land surface, only in case of no vegetation model
402	!
403	!****************************************************************************************
404
405	IF (.NOT. ok_veget) THEN
406	!
407	! Read albedo
408	ierr = NF90_INQ_VARID(nid, 'ALB', nvarid)
409	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Le champ <ALB> est absent',1)
410
411	ierr = NF90_GET_VAR(nid,nvarid,alb_glo,start,epais)
412	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Lecture echouee pour <ALB>',1)
413	!
414	! Read rugosity
415	ierr = NF90_INQ_VARID(nid, 'RUG', nvarid)
416	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Le champ <RUG> est absent',1)
417
418	ierr = NF90_GET_VAR(nid,nvarid,rug_glo,start,epais)
419	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Lecture echouee pour <RUG>',1)
420
421	END IF
422
423	!****************************************************************************************
424	! 5) Close file and distribuate variables to all processus
425	!
426	!****************************************************************************************
427	ierr = NF90_CLOSE(nid)
428	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Pb when closing file', 1)
429	ENDIF ! is_mpi_root
430
431	!$OMP END MASTER
432	!$OMP BARRIER
433
434	IF ( type_ocean /= 'couple') THEN
435	CALL Scatter(sst_glo,sst)
436	CALL Scatter(pct_glo(:,is_oce),pctsrf(:,is_oce))
437	CALL Scatter(pct_glo(:,is_sic),pctsrf(:,is_sic))
438	IF (read_continents .OR. itime == 1) THEN
439	CALL Scatter(pct_glo(:,is_ter),pctsrf(:,is_ter))
440	CALL Scatter(pct_glo(:,is_lic),pctsrf(:,is_lic))
441	END IF
442	END IF
443
444	IF (.NOT. ok_veget) THEN
445	CALL Scatter(alb_glo, albedo)
446	CALL Scatter(rug_glo, rugos)
447	END IF
448
449	ENDIF ! Grid type
450
451	ENDIF ! time to read
452
453	END SUBROUTINE limit_read_tot
454
455	END MODULE limit_read_mod

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