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limit_read_mod.F90 @ 3627

Last change on this file since 3627 was 3605, checked in by lguez, 4 years ago
Merge revisions 3427:3600 of trunk into branch `Ocean_skin`
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: 17.9 KB

Line
1	!
2	! $Id: limit_read_mod.F90 3605 2019-11-21 15:43:45Z lguez $
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	#ifdef CPP_XIOS
39	USE XIOS
40	#endif
41	IMPLICIT NONE
42	INTEGER, INTENT(IN) :: first_day
43
44
45	IF ( type_ocean /= 'couple') THEN
46	IF (grid_type==unstructured) THEN
47	#ifdef CPP_XIOS
48	IF (is_omp_master) CALL xios_set_file_attr("limit_read",enabled=.TRUE.,record_offset=first_day)
49	#endif
50	ENDIF
51	ENDIF
52
53	END SUBROUTINE init_limit_read
54
55	SUBROUTINE limit_read_frac(itime, dtime, jour, pctsrf_new, is_modified)
56	!
57	! This subroutine is called from "change_srf_frac" for case of
58	! ocean=force or from ocean_slab_frac for ocean=slab.
59	! The fraction for all sub-surfaces at actual time step is returned.
60
61	USE dimphy
62	USE indice_sol_mod
63
64	! Input arguments
65	!****************************************************************************************
66	INTEGER, INTENT(IN) :: itime ! time step
67	INTEGER, INTENT(IN) :: jour ! current day
68	REAL , INTENT(IN) :: dtime ! length of time step
69
70	! Output arguments
71	!****************************************************************************************
72	REAL, DIMENSION(klon,nbsrf), INTENT(OUT) :: pctsrf_new ! sub surface fractions
73	LOGICAL, INTENT(OUT) :: is_modified ! true if pctsrf is modified at this time step
74
75	! End declaration
76	!****************************************************************************************
77
78	! 1) Read file limit.nc
79	CALL limit_read_tot(itime, dtime, jour, is_modified)
80
81	! 2) Return the fraction read in limit_read_tot
82	pctsrf_new(:,:) = pctsrf(:,:)
83
84	END SUBROUTINE limit_read_frac
85
86	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
87
88	SUBROUTINE limit_read_rug_alb(itime, dtime, jour, &
89	knon, knindex, &
90	rugos_out, alb_out)
91	!
92	! This subroutine is called from surf_land_bucket.
93	! The flag "ok_veget" must can not be true. If coupled run, "ocean=couple"
94	! then this routine will call limit_read_tot.
95	!
96	USE dimphy
97	USE surface_data
98
99	! Input arguments
100	!****************************************************************************************
101	INTEGER, INTENT(IN) :: itime ! numero du pas de temps courant
102	INTEGER, INTENT(IN) :: jour ! jour a lire dans l'annee
103	REAL , INTENT(IN) :: dtime ! pas de temps de la physique (en s)
104	INTEGER, INTENT(IN) :: knon ! nomber of points on compressed grid
105	INTEGER, DIMENSION(klon), INTENT(IN) :: knindex ! grid point number for compressed grid
106	! Output arguments
107	!****************************************************************************************
108	REAL, DIMENSION(klon), INTENT(OUT) :: rugos_out
109	REAL, DIMENSION(klon), INTENT(OUT) :: alb_out
110
111	! Local variables
112	!****************************************************************************************
113	INTEGER :: i
114	LOGICAL :: is_modified
115	!****************************************************************************************
116
117	IF (type_ocean == 'couple'.OR. &
118	(type_ocean == 'slab' .AND. version_ocean == 'sicINT')) THEN
119	! limit.nc has not yet been read. Do it now!
120	CALL limit_read_tot(itime, dtime, jour, is_modified)
121	END IF
122
123	DO i=1,knon
124	rugos_out(i) = rugos(knindex(i))
125	alb_out(i) = albedo(knindex(i))
126	END DO
127
128	END SUBROUTINE limit_read_rug_alb
129
130	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
131
132	SUBROUTINE limit_read_sst(knon, knindex, sst_out)
133	!
134	! This subroutine returns the sea surface temperature already read from limit.nc.
135	!
136	USE dimphy, ONLY : klon
137
138	INTEGER, INTENT(IN) :: knon ! nomber of points on compressed grid
139	INTEGER, DIMENSION(klon), INTENT(IN) :: knindex ! grid point number for compressed grid
140	REAL, DIMENSION(klon), INTENT(OUT) :: sst_out
141
142	INTEGER :: i
143
144	DO i = 1, knon
145	sst_out(i) = sst(knindex(i))
146	END DO
147
148	END SUBROUTINE limit_read_sst
149
150	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
151	!!
152	!! Private subroutine :
153	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
154
155	SUBROUTINE limit_read_tot(itime, dtime, jour, is_modified)
156	!
157	! Read everything needed from limit.nc
158	!
159	! 0) Initialize
160	! 1) Open the file limit.nc, if it is time
161	! 2) Read fraction, if not type_ocean=couple
162	! 3) Read sea surface temperature, if not type_ocean=couple
163	! 4) Read albedo and rugosity for land surface, only in case of no vegetation model
164	! 5) Close file and distribuate variables to all processus
165
166	USE dimphy
167	USE mod_grid_phy_lmdz
168	USE mod_phys_lmdz_para
169	USE surface_data, ONLY : type_ocean, ok_veget
170	USE netcdf
171	USE indice_sol_mod
172	USE phys_cal_mod, ONLY : calend, year_len
173	USE print_control_mod, ONLY: lunout, prt_level
174	#ifdef CPP_XIOS
175	USE XIOS, ONLY: xios_recv_field
176	#endif
177
178	IMPLICIT NONE
179
180	! In- and ouput arguments
181	!****************************************************************************************
182	INTEGER, INTENT(IN) :: itime ! numero du pas de temps courant
183	INTEGER, INTENT(IN) :: jour ! jour a lire dans l'annee
184	REAL , INTENT(IN) :: dtime ! pas de temps de la physique (en s)
185
186	LOGICAL, INTENT(OUT) :: is_modified ! true if pctsrf is modified at this time step
187
188	! Locals variables with attribute SAVE
189	!****************************************************************************************
190	! frequence de lecture des conditions limites (en pas de physique)
191	INTEGER,SAVE :: lmt_pas
192	!$OMP THREADPRIVATE(lmt_pas)
193	LOGICAL, SAVE :: first_call=.TRUE.
194	!$OMP THREADPRIVATE(first_call)
195	INTEGER, SAVE :: jour_lu = -1
196	!$OMP THREADPRIVATE(jour_lu)
197	! Locals variables
198	!****************************************************************************************
199	INTEGER :: nid, nvarid, ndimid, nn
200	INTEGER :: ii, ierr
201	INTEGER, DIMENSION(2) :: start, epais
202	REAL, DIMENSION(klon_glo,nbsrf) :: pct_glo ! fraction at global grid
203	REAL, DIMENSION(klon_glo) :: sst_glo ! sea-surface temperature at global grid
204	REAL, DIMENSION(klon_glo) :: rug_glo ! rugosity at global grid
205	REAL, DIMENSION(klon_glo) :: alb_glo ! albedo at global grid
206
207	REAL, DIMENSION(klon_mpi,nbsrf) :: pct_mpi ! fraction at global grid
208	REAL, DIMENSION(klon_mpi) :: sst_mpi ! sea-surface temperature at global grid
209	REAL, DIMENSION(klon_mpi) :: rug_mpi ! rugosity at global grid
210	REAL, DIMENSION(klon_mpi) :: alb_mpi ! albedo at global grid
211
212	CHARACTER(len=20) :: modname='limit_read_mod'
213	CHARACTER(LEN=99) :: abort_message, calendar, str
214
215	! End declaration
216	!****************************************************************************************
217
218	!****************************************************************************************
219	! 0) Initialization
220	!
221	!****************************************************************************************
222	IF (first_call) THEN
223	first_call=.FALSE.
224	! calculate number of time steps for one day
225	lmt_pas = NINT(86400./dtime * 1.0)
226
227	! Allocate module save variables
228	IF ( type_ocean /= 'couple' ) THEN
229	ALLOCATE(pctsrf(klon,nbsrf), sst(klon), stat=ierr)
230	IF (ierr /= 0) CALL abort_physic(modname, 'PB in allocating pctsrf and sst',1)
231	END IF
232
233	IF ( .NOT. ok_veget ) THEN
234	ALLOCATE(rugos(klon), albedo(klon), stat=ierr)
235	IF (ierr /= 0) CALL abort_physic(modname, 'PB in allocating rugos and albedo',1)
236	END IF
237
238	!$OMP MASTER ! Only master thread
239	IF (is_mpi_root) THEN ! Only master processus
240	ierr = NF90_OPEN ('limit.nc', NF90_NOWRITE, nid)
241	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,&
242	'Pb d''ouverture du fichier de conditions aux limites',1)
243
244	!--- WARNING IF CALENDAR IS KNOWN AND DOES NOT MATCH THE ONE OF LMDZ
245	ierr=NF90_INQ_VARID(nid, 'TEMPS', nvarid)
246	ierr=NF90_GET_ATT(nid, nvarid, 'calendar', calendar)
247	IF(ierr==NF90_NOERR.AND.calendar/=calend.AND.prt_level>=1) THEN
248	WRITE(lunout,*)'BEWARE: gcm and limit.nc calendars differ: '
249	WRITE(lunout,*)' '//TRIM(calend)//' for gcm'
250	WRITE(lunout,*)' '//TRIM(calendar)//' for limit.nc file'
251	END IF
252
253	!--- ERROR IF FILE RECORDS NUMBER IS NOT EQUAL TO EXPECTED NUMBER OF DAYS
254	IF (grid_type==unstructured) THEN
255	ierr=NF90_INQ_DIMID(nid,"time_year",ndimid)
256	ELSE
257	ierr=NF90_INQUIRE(nid, UnlimitedDimID=ndimid)
258	ENDIF
259	ierr=NF90_INQUIRE_DIMENSION(nid, ndimid, len=nn)
260	WRITE(abort_message,'(a,2(i0,a))')'limit.nc records number (',nn,') does no'//&
261	't match year length (',year_len,')'
262	IF(nn/=year_len) CALL abort_physic(modname,abort_message,1)
263
264	!--- ERROR IF FILES AND LMDZ HORIZONTAL RESOLUTIONS DO NOT MATCH
265	IF (grid_type==unstructured) THEN
266	ierr=NF90_INQ_DIMID(nid, 'cell', ndimid)
267	ELSE
268	ierr=NF90_INQ_DIMID(nid, 'points_physiques', ndimid)
269	ENDIF
270	ierr=NF90_INQUIRE_DIMENSION(nid, ndimid, len=nn)
271	WRITE(abort_message,'(a,2(i0,a))')'limit.nc horizontal number of cells (',nn, &
272	') does not match LMDZ klon_glo (',klon_glo,')'
273	IF(nn/=klon_glo) CALL abort_physic(modname,abort_message,1)
274
275	ierr = NF90_CLOSE(nid)
276	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Pb when closing file', 1)
277	END IF ! is_mpi_root
278	!$OMP END MASTER
279	!$OMP BARRIER
280	END IF
281
282	!****************************************************************************************
283	! 1) Open the file limit.nc if it is the right moment to read, once a day.
284	! The file is read only by the master thread of the master mpi process(is_mpi_root)
285	! Check by the way if the number of records is correct.
286	!
287	!****************************************************************************************
288
289	is_modified = .FALSE.
290	!ym IF (MOD(itime-1, lmt_pas) == 0 .OR. jour_lu /= jour ) THEN ! time to read
291	! not REALLY PERIODIC
292	IF (MOD(itime-1, lmt_pas) == 0 .OR. (jour_lu /= jour .AND. grid_type /= unstructured)) THEN ! time to read
293	! IF (MOD(itime-1, lmt_pas) == 0) THEN ! time to read
294	jour_lu = jour
295	is_modified = .TRUE.
296
297	IF (grid_type==unstructured) THEN
298
299	#ifdef CPP_XIOS
300	IF ( type_ocean /= 'couple') THEN
301
302	IF (is_omp_master) CALL xios_recv_field("foce_limin",pct_mpi(:,is_oce))
303	IF (is_omp_master) CALL xios_recv_field("fsic_limin",pct_mpi(:,is_sic))
304	! IF (read_continents .OR. itime == 1) THEN
305	IF (is_omp_master) CALL xios_recv_field("fter_limin",pct_mpi(:,is_ter))
306	IF (is_omp_master) CALL xios_recv_field("flic_limin",pct_mpi(:,is_lic))
307	! ENDIF
308	ENDIF! type_ocean /= couple
309
310	IF ( type_ocean /= 'couple') THEN
311	IF (is_omp_master) CALL xios_recv_field("sst_limin",sst_mpi)
312	ENDIF
313
314	IF (.NOT. ok_veget) THEN
315	IF (is_omp_master) CALL xios_recv_field("alb_limin",alb_mpi)
316	IF (is_omp_master) CALL xios_recv_field("rug_limin",rug_mpi)
317	ENDIF
318
319	IF ( type_ocean /= 'couple') THEN
320	CALL Scatter_omp(sst_mpi,sst)
321	CALL Scatter_omp(pct_mpi(:,is_oce),pctsrf(:,is_oce))
322	CALL Scatter_omp(pct_mpi(:,is_sic),pctsrf(:,is_sic))
323	! IF (read_continents .OR. itime == 1) THEN
324	CALL Scatter_omp(pct_mpi(:,is_ter),pctsrf(:,is_ter))
325	CALL Scatter_omp(pct_mpi(:,is_lic),pctsrf(:,is_lic))
326	! END IF
327	END IF
328
329	IF (.NOT. ok_veget) THEN
330	CALL Scatter_omp(alb_mpi, albedo)
331	CALL Scatter_omp(rug_mpi, rugos)
332	END IF
333	#endif
334
335
336	ELSE ! grid_type==regular
337
338	!$OMP MASTER ! Only master thread
339	IF (is_mpi_root) THEN ! Only master processus!
340
341	ierr = NF90_OPEN ('limit.nc', NF90_NOWRITE, nid)
342	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,&
343	'Pb d''ouverture du fichier de conditions aux limites',1)
344
345	! La tranche de donnees a lire:
346	start(1) = 1
347	start(2) = jour
348	epais(1) = klon_glo
349	epais(2) = 1
350
351
352	!****************************************************************************************
353	! 2) Read fraction if not type_ocean=couple
354	!
355	!****************************************************************************************
356
357	IF ( type_ocean /= 'couple') THEN
358	!
359	! Ocean fraction
360	ierr = NF90_INQ_VARID(nid, 'FOCE', nvarid)
361	IF (ierr /= NF90_NOERR) CALL abort_physic(modname, 'Le champ <FOCE> est absent',1)
362
363	ierr = NF90_GET_VAR(nid,nvarid,pct_glo(:,is_oce),start,epais)
364	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Lecture echouee pour <FOCE>' ,1)
365	!
366	! Sea-ice fraction
367	ierr = NF90_INQ_VARID(nid, 'FSIC', nvarid)
368	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Le champ <FSIC> est absent',1)
369
370	ierr = NF90_GET_VAR(nid,nvarid,pct_glo(:,is_sic),start,epais)
371	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Lecture echouee pour <FSIC>' ,1)
372
373
374	! Read land and continentals fraction only if asked for
375	IF (read_continents .OR. itime == 1) THEN
376	!
377	! Land fraction
378	ierr = NF90_INQ_VARID(nid, 'FTER', nvarid)
379	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Le champ <FTER> est absent',1)
380
381	ierr = NF90_GET_VAR(nid,nvarid,pct_glo(:,is_ter),start,epais)
382	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Lecture echouee pour <FTER>',1)
383	!
384	! Continentale ice fraction
385	ierr = NF90_INQ_VARID(nid, 'FLIC', nvarid)
386	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Le champ <FLIC> est absent',1)
387
388	ierr = NF90_GET_VAR(nid,nvarid,pct_glo(:,is_lic),start,epais)
389	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Lecture echouee pour <FLIC>',1)
390	END IF
391
392	END IF ! type_ocean /= couple
393
394	!****************************************************************************************
395	! 3) Read sea-surface temperature, if not coupled ocean
396	!
397	!****************************************************************************************
398	IF ( type_ocean /= 'couple') THEN
399
400	ierr = NF90_INQ_VARID(nid, 'SST', nvarid)
401	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Le champ <SST> est absent',1)
402
403	ierr = NF90_GET_VAR(nid,nvarid,sst_glo,start,epais)
404	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Lecture echouee pour <SST>',1)
405
406	END IF
407
408	!****************************************************************************************
409	! 4) Read albedo and rugosity for land surface, only in case of no vegetation model
410	!
411	!****************************************************************************************
412
413	IF (.NOT. ok_veget) THEN
414	!
415	! Read albedo
416	ierr = NF90_INQ_VARID(nid, 'ALB', nvarid)
417	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Le champ <ALB> est absent',1)
418
419	ierr = NF90_GET_VAR(nid,nvarid,alb_glo,start,epais)
420	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Lecture echouee pour <ALB>',1)
421	!
422	! Read rugosity
423	ierr = NF90_INQ_VARID(nid, 'RUG', nvarid)
424	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Le champ <RUG> est absent',1)
425
426	ierr = NF90_GET_VAR(nid,nvarid,rug_glo,start,epais)
427	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Lecture echouee pour <RUG>',1)
428
429	END IF
430
431	!****************************************************************************************
432	! 5) Close file and distribuate variables to all processus
433	!
434	!****************************************************************************************
435	ierr = NF90_CLOSE(nid)
436	IF (ierr /= NF90_NOERR) CALL abort_physic(modname,'Pb when closing file', 1)
437	ENDIF ! is_mpi_root
438
439	!$OMP END MASTER
440	!$OMP BARRIER
441
442	IF ( type_ocean /= 'couple') THEN
443	CALL Scatter(sst_glo,sst)
444	CALL Scatter(pct_glo(:,is_oce),pctsrf(:,is_oce))
445	CALL Scatter(pct_glo(:,is_sic),pctsrf(:,is_sic))
446	IF (read_continents .OR. itime == 1) THEN
447	CALL Scatter(pct_glo(:,is_ter),pctsrf(:,is_ter))
448	CALL Scatter(pct_glo(:,is_lic),pctsrf(:,is_lic))
449	END IF
450	END IF
451
452	IF (.NOT. ok_veget) THEN
453	CALL Scatter(alb_glo, albedo)
454	CALL Scatter(rug_glo, rugos)
455	END IF
456
457	ENDIF ! Grid type
458
459	ENDIF ! time to read
460
461	END SUBROUTINE limit_read_tot
462
463	END MODULE limit_read_mod

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