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surf_land_orchidee_mod.F90 @ 5434

Last change on this file since 5434 was 1444, checked in by jghattas, 14 years ago

Modifications for carbon tracers :

add possibility to read source at different frequency
add dynamic varaiable to send fluxes in interface between ORCHIDEE and LMDZ : this is still under developpment under cpp key ORCH_NEW. No compatible official ORCHIDEE version does yet exist.
add variable co2_send in restart file.
clean up and bug fixes.

Property svn:eol-style set to native
Property svn:executable set to *
Property svn:keywords set to Author Date Id Revision

File size: 21.7 KB

Line
1	!
2	MODULE surf_land_orchidee_mod
3	#ifndef ORCHIDEE_NOOPENMP
4	!
5	! This module controles the interface towards the model ORCHIDEE
6	!
7	! Subroutines in this module : surf_land_orchidee
8	! Init_orchidee_index
9	! Get_orchidee_communicator
10	! Init_neighbours
11
12	USE dimphy
13	#ifdef CPP_VEGET
14	USE intersurf ! module d'ORCHIDEE
15	#endif
16	USE cpl_mod, ONLY : cpl_send_land_fields
17	USE surface_data, ONLY : type_ocean
18	USE comgeomphy, ONLY : cuphy, cvphy
19	USE mod_grid_phy_lmdz
20	USE mod_phys_lmdz_para, mpi_root_rank=>mpi_root
21
22	IMPLICIT NONE
23
24	PRIVATE
25	PUBLIC :: surf_land_orchidee
26
27	LOGICAL, ALLOCATABLE, SAVE :: flag_omp(:)
28	CONTAINS
29	!
30	!****************************************************************************************
31	!
32	SUBROUTINE surf_land_orchidee(itime, dtime, date0, knon, &
33	knindex, rlon, rlat, pctsrf, &
34	debut, lafin, &
35	plev, u1_lay, v1_lay, temp_air, spechum, epot_air, ccanopy, &
36	tq_cdrag, petAcoef, peqAcoef, petBcoef, peqBcoef, &
37	precip_rain, precip_snow, lwdown, swnet, swdown, &
38	ps, q2m, t2m, &
39	evap, fluxsens, fluxlat, &
40	tsol_rad, tsurf_new, alb1_new, alb2_new, &
41	emis_new, z0_new, qsurf)
42
43	USE mod_surf_para
44	USE mod_synchro_omp
45	USE carbon_cycle_mod, ONLY : carbon_cycle_cpl
46
47	!
48	! Cette routine sert d'interface entre le modele atmospherique et le
49	! modele de sol continental. Appel a sechiba
50	!
51	! L. Fairhead 02/2000
52	!
53	! input:
54	! itime numero du pas de temps
55	! dtime pas de temps de la physique (en s)
56	! nisurf index de la surface a traiter (1 = sol continental)
57	! knon nombre de points de la surface a traiter
58	! knindex index des points de la surface a traiter
59	! rlon longitudes de la grille entiere
60	! rlat latitudes de la grille entiere
61	! pctsrf tableau des fractions de surface de chaque maille
62	! debut logical: 1er appel a la physique (lire les restart)
63	! lafin logical: dernier appel a la physique (ecrire les restart)
64	! (si false calcul simplifie des fluxs sur les continents)
65	! plev hauteur de la premiere couche (Pa)
66	! u1_lay vitesse u 1ere couche
67	! v1_lay vitesse v 1ere couche
68	! temp_air temperature de l'air 1ere couche
69	! spechum humidite specifique 1ere couche
70	! epot_air temp pot de l'air
71	! ccanopy concentration CO2 canopee, correspond au co2_send de
72	! carbon_cycle_mod ou valeur constant co2_ppm
73	! tq_cdrag cdrag
74	! petAcoef coeff. A de la resolution de la CL pour t
75	! peqAcoef coeff. A de la resolution de la CL pour q
76	! petBcoef coeff. B de la resolution de la CL pour t
77	! peqBcoef coeff. B de la resolution de la CL pour q
78	! precip_rain precipitation liquide
79	! precip_snow precipitation solide
80	! lwdown flux IR descendant a la surface
81	! swnet flux solaire net
82	! swdown flux solaire entrant a la surface
83	! ps pression au sol
84	! radsol rayonnement net aus sol (LW + SW)
85	!
86	!
87	! output:
88	! evap evaporation totale
89	! fluxsens flux de chaleur sensible
90	! fluxlat flux de chaleur latente
91	! tsol_rad
92	! tsurf_new temperature au sol
93	! alb1_new albedo in visible SW interval
94	! alb2_new albedo in near IR interval
95	! emis_new emissivite
96	! z0_new surface roughness
97	! qsurf air moisture at surface
98	!
99	INCLUDE "indicesol.h"
100	INCLUDE "temps.h"
101	INCLUDE "YOMCST.h"
102	INCLUDE "iniprint.h"
103	INCLUDE "dimensions.h"
104
105	!
106	! Parametres d'entree
107	!****************************************************************************************
108	INTEGER, INTENT(IN) :: itime
109	REAL, INTENT(IN) :: dtime
110	REAL, INTENT(IN) :: date0
111	INTEGER, INTENT(IN) :: knon
112	INTEGER, DIMENSION(klon), INTENT(IN) :: knindex
113	LOGICAL, INTENT(IN) :: debut, lafin
114	REAL, DIMENSION(klon,nbsrf), INTENT(IN) :: pctsrf
115	REAL, DIMENSION(klon), INTENT(IN) :: rlon, rlat
116	REAL, DIMENSION(klon), INTENT(IN) :: plev
117	REAL, DIMENSION(klon), INTENT(IN) :: u1_lay, v1_lay
118	REAL, DIMENSION(klon), INTENT(IN) :: temp_air, spechum
119	REAL, DIMENSION(klon), INTENT(IN) :: epot_air, ccanopy
120	REAL, DIMENSION(klon), INTENT(IN) :: tq_cdrag
121	REAL, DIMENSION(klon), INTENT(IN) :: petAcoef, peqAcoef
122	REAL, DIMENSION(klon), INTENT(IN) :: petBcoef, peqBcoef
123	REAL, DIMENSION(klon), INTENT(IN) :: precip_rain, precip_snow
124	REAL, DIMENSION(klon), INTENT(IN) :: lwdown, swnet, swdown, ps
125	REAL, DIMENSION(klon), INTENT(IN) :: q2m, t2m
126
127	! Parametres de sortie
128	!****************************************************************************************
129	REAL, DIMENSION(klon), INTENT(OUT) :: evap, fluxsens, fluxlat, qsurf
130	REAL, DIMENSION(klon), INTENT(OUT) :: tsol_rad, tsurf_new
131	REAL, DIMENSION(klon), INTENT(OUT) :: alb1_new, alb2_new
132	REAL, DIMENSION(klon), INTENT(OUT) :: emis_new, z0_new
133
134	! Local
135	!****************************************************************************************
136	INTEGER :: ij, jj, igrid, ireal, index
137	INTEGER :: error
138	REAL, DIMENSION(klon) :: swdown_vrai
139	CHARACTER (len = 20) :: modname = 'surf_land_orchidee'
140	CHARACTER (len = 80) :: abort_message
141	LOGICAL,SAVE :: check = .FALSE.
142	!$OMP THREADPRIVATE(check)
143
144	! type de couplage dans sechiba
145	! character (len=10) :: coupling = 'implicit'
146	! drapeaux controlant les appels dans SECHIBA
147	! type(control_type), save :: control_in
148	! Preserved albedo
149	REAL, ALLOCATABLE, DIMENSION(:), SAVE :: albedo_keep, zlev
150	!$OMP THREADPRIVATE(albedo_keep,zlev)
151	! coordonnees geographiques
152	REAL, ALLOCATABLE, DIMENSION(:,:), SAVE :: lalo
153	!$OMP THREADPRIVATE(lalo)
154	! pts voisins
155	INTEGER,ALLOCATABLE, DIMENSION(:,:), SAVE :: neighbours
156	!$OMP THREADPRIVATE(neighbours)
157	! fractions continents
158	REAL,ALLOCATABLE, DIMENSION(:), SAVE :: contfrac
159	!$OMP THREADPRIVATE(contfrac)
160	! resolution de la grille
161	REAL, ALLOCATABLE, DIMENSION (:,:), SAVE :: resolution
162	!$OMP THREADPRIVATE(resolution)
163
164	REAL, ALLOCATABLE, DIMENSION (:,:), SAVE :: lon_scat, lat_scat
165	!$OMP THREADPRIVATE(lon_scat,lat_scat)
166
167	LOGICAL, SAVE :: lrestart_read = .TRUE.
168	!$OMP THREADPRIVATE(lrestart_read)
169	LOGICAL, SAVE :: lrestart_write = .FALSE.
170	!$OMP THREADPRIVATE(lrestart_write)
171
172	REAL, DIMENSION(knon,2) :: albedo_out
173
174	! Pb de nomenclature
175	REAL, DIMENSION(klon) :: petA_orc, peqA_orc
176	REAL, DIMENSION(klon) :: petB_orc, peqB_orc
177	! Pb de correspondances de grilles
178	INTEGER, DIMENSION(:), SAVE, ALLOCATABLE :: ig, jg
179	!$OMP THREADPRIVATE(ig,jg)
180	INTEGER :: indi, indj
181	INTEGER, SAVE, ALLOCATABLE,DIMENSION(:) :: ktindex
182	!$OMP THREADPRIVATE(ktindex)
183
184	! Essai cdrag
185	REAL, DIMENSION(klon) :: cdrag
186	INTEGER,SAVE :: offset
187	!$OMP THREADPRIVATE(offset)
188
189	REAL, DIMENSION(klon_glo) :: rlon_g,rlat_g
190	INTEGER, SAVE :: orch_comm
191	!$OMP THREADPRIVATE(orch_comm)
192
193	REAL, ALLOCATABLE, DIMENSION(:), SAVE :: coastalflow
194	!$OMP THREADPRIVATE(coastalflow)
195	REAL, ALLOCATABLE, DIMENSION(:), SAVE :: riverflow
196	!$OMP THREADPRIVATE(riverflow)
197
198	INTEGER :: orch_omp_rank
199	INTEGER :: orch_omp_size
200	!
201	! Fin definition
202	!****************************************************************************************
203
204	IF (check) WRITE(lunout,*)'Entree ', modname
205
206	! Initialisation
207
208	IF (debut) THEN
209	! Test of coherence between variable ok_veget and cpp key CPP_VEGET
210	#ifndef CPP_VEGET
211	abort_message='Pb de coherence: ok_veget = .true. mais CPP_VEGET = .false.'
212	CALL abort_gcm(modname,abort_message,1)
213	#endif
214
215	CALL Init_surf_para(knon)
216	ALLOCATE(ktindex(knon))
217	IF ( .NOT. ALLOCATED(albedo_keep)) THEN
218	!ym ALLOCATE(albedo_keep(klon))
219	!ym bizarre que non alloué en knon precedement
220	ALLOCATE(albedo_keep(knon))
221	ALLOCATE(zlev(knon))
222	ENDIF
223	! Pb de correspondances de grilles
224	ALLOCATE(ig(klon))
225	ALLOCATE(jg(klon))
226	ig(1) = 1
227	jg(1) = 1
228	indi = 0
229	indj = 2
230	DO igrid = 2, klon - 1
231	indi = indi + 1
232	IF ( indi > iim) THEN
233	indi = 1
234	indj = indj + 1
235	ENDIF
236	ig(igrid) = indi
237	jg(igrid) = indj
238	ENDDO
239	ig(klon) = 1
240	jg(klon) = jjm + 1
241
242	IF ((.NOT. ALLOCATED(lalo))) THEN
243	ALLOCATE(lalo(knon,2), stat = error)
244	IF (error /= 0) THEN
245	abort_message='Pb allocation lalo'
246	CALL abort_gcm(modname,abort_message,1)
247	ENDIF
248	ENDIF
249	IF ((.NOT. ALLOCATED(lon_scat))) THEN
250	ALLOCATE(lon_scat(iim,jjm+1), stat = error)
251	IF (error /= 0) THEN
252	abort_message='Pb allocation lon_scat'
253	CALL abort_gcm(modname,abort_message,1)
254	ENDIF
255	ENDIF
256	IF ((.NOT. ALLOCATED(lat_scat))) THEN
257	ALLOCATE(lat_scat(iim,jjm+1), stat = error)
258	IF (error /= 0) THEN
259	abort_message='Pb allocation lat_scat'
260	CALL abort_gcm(modname,abort_message,1)
261	ENDIF
262	ENDIF
263	lon_scat = 0.
264	lat_scat = 0.
265	DO igrid = 1, knon
266	index = knindex(igrid)
267	lalo(igrid,2) = rlon(index)
268	lalo(igrid,1) = rlat(index)
269	ENDDO
270
271
272
273	CALL Gather(rlon,rlon_g)
274	CALL Gather(rlat,rlat_g)
275
276	IF (is_mpi_root) THEN
277	index = 1
278	DO jj = 2, jjm
279	DO ij = 1, iim
280	index = index + 1
281	lon_scat(ij,jj) = rlon_g(index)
282	lat_scat(ij,jj) = rlat_g(index)
283	ENDDO
284	ENDDO
285	lon_scat(:,1) = lon_scat(:,2)
286	lat_scat(:,1) = rlat_g(1)
287	lon_scat(:,jjm+1) = lon_scat(:,2)
288	lat_scat(:,jjm+1) = rlat_g(klon_glo)
289	ENDIF
290
291	CALL bcast(lon_scat)
292	CALL bcast(lat_scat)
293	!
294	! Allouer et initialiser le tableau des voisins et des fraction de continents
295	!
296	IF ( (.NOT.ALLOCATED(neighbours))) THEN
297	ALLOCATE(neighbours(knon,8), stat = error)
298	IF (error /= 0) THEN
299	abort_message='Pb allocation neighbours'
300	CALL abort_gcm(modname,abort_message,1)
301	ENDIF
302	ENDIF
303	neighbours = -1.
304	IF (( .NOT. ALLOCATED(contfrac))) THEN
305	ALLOCATE(contfrac(knon), stat = error)
306	IF (error /= 0) THEN
307	abort_message='Pb allocation contfrac'
308	CALL abort_gcm(modname,abort_message,1)
309	ENDIF
310	ENDIF
311
312	DO igrid = 1, knon
313	ireal = knindex(igrid)
314	contfrac(igrid) = pctsrf(ireal,is_ter)
315	ENDDO
316
317
318	CALL Init_neighbours(knon,neighbours,knindex,pctsrf(:,is_ter))
319
320	!
321	! Allocation et calcul resolutions
322	IF ( (.NOT.ALLOCATED(resolution))) THEN
323	ALLOCATE(resolution(knon,2), stat = error)
324	IF (error /= 0) THEN
325	abort_message='Pb allocation resolution'
326	CALL abort_gcm(modname,abort_message,1)
327	ENDIF
328	ENDIF
329	DO igrid = 1, knon
330	ij = knindex(igrid)
331	resolution(igrid,1) = cuphy(ij)
332	resolution(igrid,2) = cvphy(ij)
333	ENDDO
334
335	ALLOCATE(coastalflow(klon), stat = error)
336	IF (error /= 0) THEN
337	abort_message='Pb allocation coastalflow'
338	CALL abort_gcm(modname,abort_message,1)
339	ENDIF
340
341	ALLOCATE(riverflow(klon), stat = error)
342	IF (error /= 0) THEN
343	abort_message='Pb allocation riverflow'
344	CALL abort_gcm(modname,abort_message,1)
345	ENDIF
346	!
347	! carbon_cycle_cpl not possible with this interface and version of ORHCHIDEE
348	!
349	IF (carbon_cycle_cpl) THEN
350	abort_message='carbon_cycle_cpl not yet possible with this interface of ORCHIDEE'
351	CALL abort_gcm(modname,abort_message,1)
352	END IF
353
354	ENDIF ! (fin debut)
355
356
357	!
358	! Appel a la routine sols continentaux
359	!
360	IF (lafin) lrestart_write = .TRUE.
361	IF (check) WRITE(lunout,*)'lafin ',lafin,lrestart_write
362
363	petA_orc(1:knon) = petBcoef(1:knon) * dtime
364	petB_orc(1:knon) = petAcoef(1:knon)
365	peqA_orc(1:knon) = peqBcoef(1:knon) * dtime
366	peqB_orc(1:knon) = peqAcoef(1:knon)
367
368	cdrag = 0.
369	cdrag(1:knon) = tq_cdrag(1:knon)
370
371	! zlev(1:knon) = (100.plev(1:knon))/((ps(1:knon)/287.05temp_air(1:knon))*9.80665)
372	zlev(1:knon) = (100.plev(1:knon))/((ps(1:knon)/RDtemp_air(1:knon))*RG)
373
374
375	! PF et PASB
376	! where(cdrag > 0.01)
377	! cdrag = 0.01
378	! endwhere
379	! write(,)'Cdrag = ',minval(cdrag),maxval(cdrag)
380
381
382	IF (debut) THEN
383	CALL Init_orchidee_index(knon,knindex,offset,ktindex)
384	CALL Get_orchidee_communicator(orch_comm,orch_omp_size,orch_omp_rank)
385	CALL Init_synchro_omp
386
387	IF (knon > 0) THEN
388	#ifdef CPP_VEGET
389	CALL Init_intersurf(nbp_lon,nbp_lat,knon,ktindex,offset,orch_omp_size,orch_omp_rank,orch_comm)
390	#endif
391	ENDIF
392
393
394	IF (knon > 0) THEN
395
396	#ifdef CPP_VEGET
397	CALL intersurf_main (itime+itau_phy-1, iim, jjm+1, knon, ktindex, dtime, &
398	lrestart_read, lrestart_write, lalo, &
399	contfrac, neighbours, resolution, date0, &
400	zlev, u1_lay, v1_lay, spechum, temp_air, epot_air, ccanopy, &
401	cdrag, petA_orc, peqA_orc, petB_orc, peqB_orc, &
402	precip_rain, precip_snow, lwdown, swnet, swdown, ps, &
403	evap, fluxsens, fluxlat, coastalflow, riverflow, &
404	tsol_rad, tsurf_new, qsurf, albedo_out, emis_new, z0_new, &
405	lon_scat, lat_scat, q2m, t2m)
406	#endif
407	ENDIF
408
409	CALL Synchro_omp
410
411	albedo_keep(1:knon) = (albedo_out(1:knon,1)+albedo_out(1:knon,2))/2.
412
413	ENDIF
414
415
416	! swdown_vrai(1:knon) = swnet(1:knon)/(1. - albedo_keep(1:knon))
417	swdown_vrai(1:knon) = swdown(1:knon)
418
419	IF (knon > 0) THEN
420	#ifdef CPP_VEGET
421	CALL intersurf_main (itime+itau_phy, iim, jjm+1, knon, ktindex, dtime, &
422	lrestart_read, lrestart_write, lalo, &
423	contfrac, neighbours, resolution, date0, &
424	zlev, u1_lay(1:knon), v1_lay(1:knon), spechum(1:knon), temp_air(1:knon), epot_air(1:knon), ccanopy(1:knon), &
425	cdrag(1:knon), petA_orc(1:knon), peqA_orc(1:knon), petB_orc(1:knon), peqB_orc(1:knon), &
426	precip_rain(1:knon), precip_snow(1:knon), lwdown(1:knon), swnet(1:knon), swdown_vrai(1:knon), ps(1:knon), &
427	evap(1:knon), fluxsens(1:knon), fluxlat(1:knon), coastalflow(1:knon), riverflow(1:knon), &
428	tsol_rad(1:knon), tsurf_new(1:knon), qsurf(1:knon), albedo_out(1:knon,:), emis_new(1:knon), z0_new(1:knon), &
429	lon_scat, lat_scat, q2m, t2m)
430	#endif
431	ENDIF
432
433	CALL Synchro_omp
434
435	albedo_keep(1:knon) = (albedo_out(1:knon,1)+albedo_out(1:knon,2))/2.
436
437	!* Send to coupler
438	!
439	IF (type_ocean=='couple') THEN
440	CALL cpl_send_land_fields(itime, knon, knindex, &
441	riverflow, coastalflow)
442	ENDIF
443
444	alb1_new(1:knon) = albedo_out(1:knon,1)
445	alb2_new(1:knon) = albedo_out(1:knon,2)
446
447	! Convention orchidee: positif vers le haut
448	fluxsens(1:knon) = -1. * fluxsens(1:knon)
449	fluxlat(1:knon) = -1. * fluxlat(1:knon)
450
451	! evap = -1. * evap
452
453	IF (debut) lrestart_read = .FALSE.
454
455	IF (debut) CALL Finalize_surf_para
456
457
458	END SUBROUTINE surf_land_orchidee
459	!
460	!****************************************************************************************
461	!
462	SUBROUTINE Init_orchidee_index(knon,knindex,offset,ktindex)
463	USE mod_surf_para
464	USE mod_grid_phy_lmdz
465
466	INTEGER,INTENT(IN) :: knon
467	INTEGER,INTENT(IN) :: knindex(klon)
468	INTEGER,INTENT(OUT) :: offset
469	INTEGER,INTENT(OUT) :: ktindex(klon)
470
471	INTEGER :: ktindex_glo(knon_glo)
472	INTEGER :: offset_para(0:omp_size*mpi_size-1)
473	INTEGER :: LastPoint
474	INTEGER :: task
475
476	ktindex(1:knon)=knindex(1:knon)+(klon_mpi_begin-1)+(klon_omp_begin-1)+nbp_lon-1
477
478	CALL gather_surf(ktindex(1:knon),ktindex_glo)
479
480	IF (is_mpi_root .AND. is_omp_root) THEN
481	LastPoint=0
482	DO Task=0,mpi_size*omp_size-1
483	IF (knon_glo_para(Task)>0) THEN
484	offset_para(task)= LastPoint-MOD(LastPoint,nbp_lon)
485	LastPoint=ktindex_glo(knon_glo_end_para(task))
486	ENDIF
487	ENDDO
488	ENDIF
489
490	CALL bcast(offset_para)
491
492	offset=offset_para(omp_size*mpi_rank+omp_rank)
493
494	ktindex(1:knon)=ktindex(1:knon)-offset
495
496	END SUBROUTINE Init_orchidee_index
497
498	!
499	!*********************** *************************************************************
500	!
501
502	SUBROUTINE Get_orchidee_communicator(orch_comm,orch_omp_size,orch_omp_rank)
503	USE mod_surf_para
504
505	#ifdef CPP_MPI
506	INCLUDE 'mpif.h'
507	#endif
508
509	INTEGER,INTENT(OUT) :: orch_comm
510	INTEGER,INTENT(OUT) :: orch_omp_size
511	INTEGER,INTENT(OUT) :: orch_omp_rank
512	INTEGER :: color
513	INTEGER :: i,ierr
514	!
515	! End definition
516	!****************************************************************************************
517
518
519	IF (is_omp_root) THEN
520
521	IF (knon_mpi==0) THEN
522	color = 0
523	ELSE
524	color = 1
525	ENDIF
526
527	#ifdef CPP_MPI
528	CALL MPI_COMM_SPLIT(COMM_LMDZ_PHY,color,mpi_rank,orch_comm,ierr)
529	#endif
530
531	ENDIF
532	CALL bcast_omp(orch_comm)
533
534	IF (knon_mpi /= 0) THEN
535	orch_omp_size=0
536	DO i=0,omp_size-1
537	IF (knon_omp_para(i) /=0) THEN
538	orch_omp_size=orch_omp_size+1
539	IF (i==omp_rank) orch_omp_rank=orch_omp_size-1
540	ENDIF
541	ENDDO
542	ENDIF
543
544
545	END SUBROUTINE Get_orchidee_communicator
546	!
547	!****************************************************************************************
548	!
549
550	SUBROUTINE Init_neighbours(knon,neighbours,knindex,pctsrf)
551	USE mod_grid_phy_lmdz
552	USE mod_surf_para
553	INCLUDE "indicesol.h"
554
555	#ifdef CPP_MPI
556	INCLUDE 'mpif.h'
557	#endif
558
559	! Input arguments
560	!****************************************************************************************
561	INTEGER, INTENT(IN) :: knon
562	INTEGER, DIMENSION(klon), INTENT(IN) :: knindex
563	REAL, DIMENSION(klon), INTENT(IN) :: pctsrf
564
565	! Output arguments
566	!****************************************************************************************
567	INTEGER, DIMENSION(knon,8), INTENT(OUT) :: neighbours
568
569	! Local variables
570	!****************************************************************************************
571	INTEGER :: i, igrid, jj, ij, iglob
572	INTEGER :: ierr, ireal, index
573	INTEGER, DIMENSION(8,3) :: off_ini
574	INTEGER, DIMENSION(8) :: offset
575	INTEGER, DIMENSION(nbp_lon,nbp_lat) :: correspond
576	INTEGER, DIMENSION(knon_glo) :: ktindex_glo
577	INTEGER, DIMENSION(knon_glo,8) :: neighbours_glo
578	REAL, DIMENSION(klon_glo) :: pctsrf_glo
579	INTEGER :: ktindex(klon)
580	!
581	! End definition
582	!****************************************************************************************
583
584	ktindex(1:knon)=knindex(1:knon)+(klon_mpi_begin-1)+(klon_omp_begin-1)+nbp_lon-1
585
586	CALL gather_surf(ktindex(1:knon),ktindex_glo)
587	CALL gather(pctsrf,pctsrf_glo)
588
589	IF (is_mpi_root .AND. is_omp_root) THEN
590	neighbours_glo(:,:)=-1
591	! Initialisation des offset
592	!
593	! offset bord ouest
594	off_ini(1,1) = - nbp_lon ; off_ini(2,1) = - nbp_lon + 1 ; off_ini(3,1) = 1
595	off_ini(4,1) = nbp_lon + 1 ; off_ini(5,1) = nbp_lon ; off_ini(6,1) = 2 * nbp_lon - 1
596	off_ini(7,1) = nbp_lon -1 ; off_ini(8,1) = - 1
597	! offset point normal
598	off_ini(1,2) = - nbp_lon ; off_ini(2,2) = - nbp_lon + 1 ; off_ini(3,2) = 1
599	off_ini(4,2) = nbp_lon + 1 ; off_ini(5,2) = nbp_lon ; off_ini(6,2) = nbp_lon - 1
600	off_ini(7,2) = -1 ; off_ini(8,2) = - nbp_lon - 1
601	! offset bord est
602	off_ini(1,3) = - nbp_lon ; off_ini(2,3) = - 2 * nbp_lon + 1 ; off_ini(3,3) = - nbp_lon + 1
603	off_ini(4,3) = 1 ; off_ini(5,3) = nbp_lon ; off_ini(6,3) = nbp_lon - 1
604	off_ini(7,3) = -1 ; off_ini(8,3) = - nbp_lon - 1
605	!
606	!
607	! Attention aux poles
608	!
609	DO igrid = 1, knon_glo
610	index = ktindex_glo(igrid)
611	jj = INT((index - 1)/nbp_lon) + 1
612	ij = index - (jj - 1) * nbp_lon
613	correspond(ij,jj) = igrid
614	ENDDO
615
616	DO igrid = 1, knon_glo
617	iglob = ktindex_glo(igrid)
618
619	IF (MOD(iglob, nbp_lon) == 1) THEN
620	offset = off_ini(:,1)
621	ELSE IF(MOD(iglob, nbp_lon) == 0) THEN
622	offset = off_ini(:,3)
623	ELSE
624	offset = off_ini(:,2)
625	ENDIF
626
627	DO i = 1, 8
628	index = iglob + offset(i)
629	ireal = (MIN(MAX(1, index - nbp_lon + 1), klon_glo))
630	IF (pctsrf_glo(ireal) > EPSFRA) THEN
631	jj = INT((index - 1)/nbp_lon) + 1
632	ij = index - (jj - 1) * nbp_lon
633	neighbours_glo(igrid, i) = correspond(ij, jj)
634	ENDIF
635	ENDDO
636	ENDDO
637
638	ENDIF
639
640	DO i = 1, 8
641	CALL scatter_surf(neighbours_glo(:,i),neighbours(1:knon,i))
642	ENDDO
643	END SUBROUTINE Init_neighbours
644
645	!
646	!****************************************************************************************
647	!
648	#endif
649	END MODULE surf_land_orchidee_mod

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