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surf_land_orchidee_mod.F90 @ 1132

Last change on this file since 1132 was 1132, checked in by jghattas, 16 years ago

Ajout du module surf_land_orchidee_noooenmp_mod qui contient l'ancien interface d'ORCHIDEE. Pour utiliser cette module il faut compiler avec le cle cpp ORCHIDEE_NOOPENMP. Par default on continue a utiliser le module surf_land_orchidee_mod qui contient l'interface mixte MPI/OpenMP pour ORCHIDEE.

Ajout d'option -cpp dans makegcm_fcm qui permet d'ajouter un cle cpp dans la ligne de compilation.

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

File size: 21.2 KB

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

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