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surf_land_orchidee_mod.F90 @ 977

Last change on this file since 977 was 888, checked in by Laurent Fairhead, 17 years ago
Modifications sur l'albedo JG LF
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File size: 23.8 KB

Line
1	!
2	! $Header$
3	!
4	MODULE surf_land_orchidee_mod
5	!
6	! This module controles the interface towards the model ORCHIDEE
7	!
8	! Subroutines in this module : surf_land_orchidee
9	! Init_orchidee_index
10	! Get_orchidee_communicator
11	! Init_neighbours
12	#ifdef CPP_VEGET
13
14	USE dimphy
15	USE intersurf ! module d'ORCHIDEE
16	USE cpl_mod, ONLY : cpl_send_land_fields
17	USE surface_data, ONLY : ocean, ok_veget
18	USE comgeomphy, ONLY : cuphy, cvphy
19	USE mod_grid_phy_lmdz
20	USE mod_phys_lmdz_para
21
22	IMPLICIT NONE
23
24	PRIVATE
25	PUBLIC :: surf_land_orchidee
26
27	CONTAINS
28	!
29	!****************************************************************************************
30	!
31	SUBROUTINE surf_land_orchidee(itime, dtime, date0, knon, &
32	knindex, rlon, rlat, pctsrf, &
33	debut, lafin, &
34	plev, u1_lay, v1_lay, temp_air, spechum, epot_air, ccanopy, &
35	tq_cdrag, petAcoef, peqAcoef, petBcoef, peqBcoef, &
36	precip_rain, precip_snow, lwdown, swnet, swdown, &
37	ps, &
38	evap, fluxsens, fluxlat, &
39	tsol_rad, tsurf_new, alb1_new, alb2_new, &
40	emis_new, z0_new, qsurf)
41	!
42	! Cette routine sert d'interface entre le modele atmospherique et le
43	! modele de sol continental. Appel a sechiba
44	!
45	! L. Fairhead 02/2000
46	!
47	! input:
48	! itime numero du pas de temps
49	! dtime pas de temps de la physique (en s)
50	! nisurf index de la surface a traiter (1 = sol continental)
51	! knon nombre de points de la surface a traiter
52	! knindex index des points de la surface a traiter
53	! rlon longitudes de la grille entiere
54	! rlat latitudes de la grille entiere
55	! pctsrf tableau des fractions de surface de chaque maille
56	! debut logical: 1er appel a la physique (lire les restart)
57	! lafin logical: dernier appel a la physique (ecrire les restart)
58	! (si false calcul simplifie des fluxs sur les continents)
59	! plev hauteur de la premiere couche (Pa)
60	! u1_lay vitesse u 1ere couche
61	! v1_lay vitesse v 1ere couche
62	! temp_air temperature de l'air 1ere couche
63	! spechum humidite specifique 1ere couche
64	! epot_air temp pot de l'air
65	! ccanopy concentration CO2 canopee
66	! tq_cdrag cdrag
67	! petAcoef coeff. A de la resolution de la CL pour t
68	! peqAcoef coeff. A de la resolution de la CL pour q
69	! petBcoef coeff. B de la resolution de la CL pour t
70	! peqBcoef coeff. B de la resolution de la CL pour q
71	! precip_rain precipitation liquide
72	! precip_snow precipitation solide
73	! lwdown flux IR descendant a la surface
74	! swnet flux solaire net
75	! swdown flux solaire entrant a la surface
76	! ps pression au sol
77	! radsol rayonnement net aus sol (LW + SW)
78	!
79	!
80	! output:
81	! evap evaporation totale
82	! fluxsens flux de chaleur sensible
83	! fluxlat flux de chaleur latente
84	! tsol_rad
85	! tsurf_new temperature au sol
86	! alb1_new albedo in visible SW interval
87	! alb2_new albedo in near IR interval
88	! emis_new emissivite
89	! z0_new surface roughness
90	! qsurf air moisture at surface
91	!
92	INCLUDE "indicesol.h"
93	INCLUDE "temps.h"
94	INCLUDE "YOMCST.h"
95	INCLUDE "iniprint.h"
96	INCLUDE "dimensions.h"
97
98	!
99	! Parametres d'entree
100	!****************************************************************************************
101	INTEGER, INTENT(IN) :: itime
102	REAL, INTENT(IN) :: dtime
103	REAL, INTENT(IN) :: date0
104	INTEGER, INTENT(IN) :: knon
105	INTEGER, DIMENSION(klon), INTENT(IN) :: knindex
106	LOGICAL, INTENT(IN) :: debut, lafin
107	REAL, DIMENSION(klon,nbsrf), INTENT(IN) :: pctsrf
108	REAL, DIMENSION(klon), INTENT(IN) :: rlon, rlat
109	REAL, DIMENSION(klon), INTENT(IN) :: plev
110	REAL, DIMENSION(klon), INTENT(IN) :: u1_lay, v1_lay
111	REAL, DIMENSION(klon), INTENT(IN) :: temp_air, spechum
112	REAL, DIMENSION(klon), INTENT(IN) :: epot_air, ccanopy
113	REAL, DIMENSION(klon), INTENT(IN) :: tq_cdrag
114	REAL, DIMENSION(klon), INTENT(IN) :: petAcoef, peqAcoef
115	REAL, DIMENSION(klon), INTENT(IN) :: petBcoef, peqBcoef
116	REAL, DIMENSION(klon), INTENT(IN) :: precip_rain, precip_snow
117	REAL, DIMENSION(klon), INTENT(IN) :: lwdown, swnet, swdown, ps
118	REAL, DIMENSION(klon) :: swdown_vrai
119
120	! Parametres de sortie
121	!****************************************************************************************
122	REAL, DIMENSION(klon), INTENT(OUT) :: evap, fluxsens, fluxlat, qsurf
123	REAL, DIMENSION(klon), INTENT(OUT) :: tsol_rad, tsurf_new
124	REAL, DIMENSION(klon), INTENT(OUT) :: alb1_new, alb2_new
125	REAL, DIMENSION(klon), INTENT(OUT) :: emis_new, z0_new
126
127	! Local
128	!****************************************************************************************
129	INTEGER :: ij, jj, igrid, ireal, index
130	INTEGER :: error
131	CHARACTER (len = 20) :: modname = 'surf_land_orchidee'
132	CHARACTER (len = 80) :: abort_message
133	LOGICAL,SAVE :: check = .FALSE.
134	!$OMP THREADPRIVATE(check)
135
136	! type de couplage dans sechiba
137	! character (len=10) :: coupling = 'implicit'
138	! drapeaux controlant les appels dans SECHIBA
139	! type(control_type), save :: control_in
140	! Preserved albedo
141	REAL, ALLOCATABLE, DIMENSION(:), SAVE :: albedo_keep, zlev
142	!$OMP THREADPRIVATE(albedo_keep,zlev)
143	! coordonnees geographiques
144	REAL, ALLOCATABLE, DIMENSION(:,:), SAVE :: lalo
145	!$OMP THREADPRIVATE(lalo)
146	! pts voisins
147	INTEGER,ALLOCATABLE, DIMENSION(:,:), SAVE :: neighbours
148	!$OMP THREADPRIVATE(neighbours)
149	! fractions continents
150	REAL,ALLOCATABLE, DIMENSION(:), SAVE :: contfrac
151	!$OMP THREADPRIVATE(contfrac)
152	! resolution de la grille
153	REAL, ALLOCATABLE, DIMENSION (:,:), SAVE :: resolution
154	!$OMP THREADPRIVATE(resolution)
155
156	REAL, ALLOCATABLE, DIMENSION (:,:), SAVE :: lon_scat, lat_scat
157	!$OMP THREADPRIVATE(lon_scat,lat_scat)
158
159	LOGICAL, SAVE :: lrestart_read = .TRUE.
160	!$OMP THREADPRIVATE(lrestart_read)
161	LOGICAL, SAVE :: lrestart_write = .FALSE.
162	!$OMP THREADPRIVATE(lrestart_write)
163
164	REAL, DIMENSION(knon,2) :: albedo_out
165	!$OMP THREADPRIVATE(albedo_out)
166
167	! Pb de nomenclature
168	REAL, DIMENSION(klon) :: petA_orc, peqA_orc
169	REAL, DIMENSION(klon) :: petB_orc, peqB_orc
170	! Pb de correspondances de grilles
171	INTEGER, DIMENSION(:), SAVE, ALLOCATABLE :: ig, jg
172	!$OMP THREADPRIVATE(ig,jg)
173	INTEGER :: indi, indj
174	INTEGER, SAVE, ALLOCATABLE,DIMENSION(:) :: ktindex
175	!$OMP THREADPRIVATE(ktindex)
176
177	! Essai cdrag
178	REAL, DIMENSION(klon) :: cdrag
179	INTEGER,SAVE :: offset
180	!$OMP THREADPRIVATE(offset)
181
182	REAL, DIMENSION(klon_glo) :: rlon_g,rlat_g
183	INTEGER, SAVE :: orch_comm
184	!$OMP THREADPRIVATE(orch_comm)
185
186	REAL, ALLOCATABLE, DIMENSION(:), SAVE :: coastalflow
187	!$OMP THREADPRIVATE(coastalflow)
188	REAL, ALLOCATABLE, DIMENSION(:), SAVE :: riverflow
189	!$OMP THREADPRIVATE(riverflow)
190	!
191	! Fin definition
192	!****************************************************************************************
193
194	IF (check) WRITE(lunout,*)'Entree ', modname
195	IF (check) WRITE(lunout,*)'ok_veget = ',ok_veget
196
197	! Initialisation
198
199	IF (debut) THEN
200	ALLOCATE(ktindex(knon))
201	IF ( .NOT. ALLOCATED(albedo_keep)) THEN
202	ALLOCATE(albedo_keep(klon))
203	ALLOCATE(zlev(knon))
204	ENDIF
205	! Pb de correspondances de grilles
206	ALLOCATE(ig(klon))
207	ALLOCATE(jg(klon))
208	ig(1) = 1
209	jg(1) = 1
210	indi = 0
211	indj = 2
212	DO igrid = 2, klon - 1
213	indi = indi + 1
214	IF ( indi > iim) THEN
215	indi = 1
216	indj = indj + 1
217	ENDIF
218	ig(igrid) = indi
219	jg(igrid) = indj
220	ENDDO
221	ig(klon) = 1
222	jg(klon) = jjm + 1
223
224	IF ((.NOT. ALLOCATED(lalo))) THEN
225	ALLOCATE(lalo(knon,2), stat = error)
226	IF (error /= 0) THEN
227	abort_message='Pb allocation lalo'
228	CALL abort_gcm(modname,abort_message,1)
229	ENDIF
230	ENDIF
231	IF ((.NOT. ALLOCATED(lon_scat))) THEN
232	ALLOCATE(lon_scat(iim,jjm+1), stat = error)
233	IF (error /= 0) THEN
234	abort_message='Pb allocation lon_scat'
235	CALL abort_gcm(modname,abort_message,1)
236	ENDIF
237	ENDIF
238	IF ((.NOT. ALLOCATED(lat_scat))) THEN
239	ALLOCATE(lat_scat(iim,jjm+1), stat = error)
240	IF (error /= 0) THEN
241	abort_message='Pb allocation lat_scat'
242	CALL abort_gcm(modname,abort_message,1)
243	ENDIF
244	ENDIF
245	lon_scat = 0.
246	lat_scat = 0.
247	DO igrid = 1, knon
248	index = knindex(igrid)
249	lalo(igrid,2) = rlon(index)
250	lalo(igrid,1) = rlat(index)
251	ENDDO
252
253
254
255	CALL Gather(rlon,rlon_g)
256	CALL Gather(rlat,rlat_g)
257
258	IF (is_mpi_root) THEN
259	index = 1
260	DO jj = 2, jjm
261	DO ij = 1, iim
262	index = index + 1
263	lon_scat(ij,jj) = rlon_g(index)
264	lat_scat(ij,jj) = rlat_g(index)
265	ENDDO
266	ENDDO
267	lon_scat(:,1) = lon_scat(:,2)
268	lat_scat(:,1) = rlat_g(1)
269	lon_scat(:,jjm+1) = lon_scat(:,2)
270	lat_scat(:,jjm+1) = rlat_g(klon_glo)
271	ENDIF
272
273
274	!
275	! Allouer et initialiser le tableau des voisins et des fraction de continents
276	!
277	IF ( (.NOT.ALLOCATED(neighbours))) THEN
278	ALLOCATE(neighbours(knon,8), stat = error)
279	IF (error /= 0) THEN
280	abort_message='Pb allocation neighbours'
281	CALL abort_gcm(modname,abort_message,1)
282	ENDIF
283	ENDIF
284	neighbours = -1.
285	IF (( .NOT. ALLOCATED(contfrac))) THEN
286	ALLOCATE(contfrac(knon), stat = error)
287	IF (error /= 0) THEN
288	abort_message='Pb allocation contfrac'
289	CALL abort_gcm(modname,abort_message,1)
290	ENDIF
291	ENDIF
292
293	DO igrid = 1, knon
294	ireal = knindex(igrid)
295	contfrac(igrid) = pctsrf(ireal,is_ter)
296	ENDDO
297
298
299	CALL Init_neighbours(knon,neighbours,knindex,pctsrf(:,is_ter))
300
301	!
302	! Allocation et calcul resolutions
303	IF ( (.NOT.ALLOCATED(resolution))) THEN
304	ALLOCATE(resolution(knon,2), stat = error)
305	IF (error /= 0) THEN
306	abort_message='Pb allocation resolution'
307	CALL abort_gcm(modname,abort_message,1)
308	ENDIF
309	ENDIF
310	DO igrid = 1, knon
311	ij = knindex(igrid)
312	resolution(igrid,1) = cuphy(ij)
313	resolution(igrid,2) = cvphy(ij)
314	ENDDO
315
316	ALLOCATE(coastalflow(klon), stat = error)
317	IF (error /= 0) THEN
318	abort_message='Pb allocation coastalflow'
319	CALL abort_gcm(modname,abort_message,1)
320	ENDIF
321
322	ALLOCATE(riverflow(klon), stat = error)
323	IF (error /= 0) THEN
324	abort_message='Pb allocation riverflow'
325	CALL abort_gcm(modname,abort_message,1)
326	ENDIF
327
328	ENDIF ! (fin debut)
329
330	!
331	! Appel a la routine sols continentaux
332	!
333	IF (lafin) lrestart_write = .TRUE.
334	IF (check) WRITE(lunout,*)'lafin ',lafin,lrestart_write
335
336	petA_orc(1:knon) = petBcoef(1:knon) * dtime
337	petB_orc(1:knon) = petAcoef(1:knon)
338	peqA_orc(1:knon) = peqBcoef(1:knon) * dtime
339	peqB_orc(1:knon) = peqAcoef(1:knon)
340
341	cdrag = 0.
342	cdrag(1:knon) = tq_cdrag(1:knon)
343
344	! zlev(1:knon) = (100.plev(1:knon))/((ps(1:knon)/287.05temp_air(1:knon))*9.80665)
345	zlev(1:knon) = (100.plev(1:knon))/((ps(1:knon)/RDtemp_air(1:knon))*RG)
346
347
348	! PF et PASB
349	! where(cdrag > 0.01)
350	! cdrag = 0.01
351	! endwhere
352	! write(,)'Cdrag = ',minval(cdrag),maxval(cdrag)
353
354	!
355	! Init Orchidee
356	!
357	! if (pole_nord) then
358	! offset=0
359	! ktindex(:)=ktindex(:)+iim-1
360	! else
361	! offset = klon_mpi_begin-1+iim-1
362	! ktindex(:)=ktindex(:)+MOD(offset,iim)
363	! offset=offset-MOD(offset,iim)
364	! endif
365
366	IF (debut) THEN
367	CALL Get_orchidee_communicator(knon,orch_comm)
368	IF (knon /=0) THEN
369	CALL Init_orchidee_index(knon,orch_comm,knindex,offset,ktindex)
370
371	#ifndef CPP_PARA
372	#define ORC_PREPAR
373	#endif
374	#ifdef ORC_PREPAR
375	! Interface for ORCHIDEE version 1.9 or earlier compiled in sequential mode(without preprocessing flag CPP_PARA)
376	CALL intersurf_main (itime+itau_phy-1, iim, jjm+1, knon, ktindex, dtime, &
377	lrestart_read, lrestart_write, lalo, &
378	contfrac, neighbours, resolution, date0, &
379	zlev, u1_lay, v1_lay, spechum, temp_air, epot_air, ccanopy, &
380	cdrag, petA_orc, peqA_orc, petB_orc, peqB_orc, &
381	precip_rain, precip_snow, lwdown, swnet, swdown, ps, &
382	evap, fluxsens, fluxlat, coastalflow, riverflow, &
383	tsol_rad, tsurf_new, qsurf, albedo_out, emis_new, z0_new, &
384	lon_scat, lat_scat)
385
386	#else
387	! Interface for ORCHIDEE version 1.9 compiled in parallel mode(with preprocessing flag CPP_PARA)
388	CALL intersurf_main (itime+itau_phy-1, iim, jjm+1, offset, knon, ktindex, &
389	orch_comm, dtime, lrestart_read, lrestart_write, lalo, &
390	contfrac, neighbours, resolution, date0, &
391	zlev, u1_lay(1:knon), v1_lay(1:knon), spechum(1:knon), temp_air(1:knon), epot_air(1:knon), ccanopy(1:knon), &
392	cdrag(1:knon), petA_orc(1:knon), peqA_orc(1:knon), petB_orc(1:knon), peqB_orc(1:knon), &
393	precip_rain(1:knon), precip_snow(1:knon), lwdown(1:knon), swnet(1:knon), swdown(1:knon), ps(1:knon), &
394	evap(1:knon), fluxsens(1:knon), fluxlat(1:knon), coastalflow(1:knon), riverflow(1:knon), &
395	tsol_rad(1:knon), tsurf_new(1:knon), qsurf(1:knon), albedo_out(1:knon,:), emis_new(1:knon), z0_new(1:knon), &
396	lon_scat, lat_scat)
397	#endif
398
399	ENDIF
400
401	albedo_keep(1:knon) = (albedo_out(1:knon,1)+albedo_out(1:knon,2))/2.
402
403	ENDIF
404
405	! swdown_vrai(1:knon) = swnet(1:knon)/(1. - albedo_keep(1:knon))
406	swdown_vrai(1:knon) = swdown(1:knon)
407
408	IF (knon /=0) THEN
409
410	#ifdef ORC_PREPAR
411	! Interface for ORCHIDEE version 1.9 or earlier compiled in sequential mode(without preprocessing flag CPP_PARA)
412	CALL intersurf_main (itime+itau_phy, iim, jjm+1, knon, ktindex, dtime, &
413	lrestart_read, lrestart_write, lalo, &
414	contfrac, neighbours, resolution, date0, &
415	zlev, u1_lay, v1_lay, spechum, temp_air, epot_air, ccanopy, &
416	cdrag, petA_orc, peqA_orc, petB_orc, peqB_orc, &
417	precip_rain, precip_snow, lwdown, swnet, swdown_vrai, ps, &
418	evap, fluxsens, fluxlat, coastalflow, riverflow, &
419	tsol_rad, tsurf_new, qsurf, albedo_out, emis_new, z0_new, &
420	lon_scat, lat_scat)
421
422	#else
423	! Interface for ORCHIDEE version 1.9 compiled in parallel mode(with preprocessing flag CPP_PARA)
424	CALL intersurf_main (itime+itau_phy, iim, jjm+1,offset, knon, ktindex, &
425	orch_comm,dtime, lrestart_read, lrestart_write, lalo, &
426	contfrac, neighbours, resolution, date0, &
427	zlev, u1_lay(1:knon), v1_lay(1:knon), spechum(1:knon), temp_air(1:knon), epot_air(1:knon), ccanopy(1:knon), &
428	cdrag(1:knon), petA_orc(1:knon), peqA_orc(1:knon), petB_orc(1:knon), peqB_orc(1:knon), &
429	precip_rain(1:knon), precip_snow(1:knon), lwdown(1:knon), swnet(1:knon), swdown_vrai(1:knon), ps(1:knon), &
430	evap(1:knon), fluxsens(1:knon), fluxlat(1:knon), coastalflow(1:knon), riverflow(1:knon), &
431	tsol_rad(1:knon), tsurf_new(1:knon), qsurf(1:knon), albedo_out(1:knon,:), emis_new(1:knon), z0_new(1:knon), &
432	lon_scat, lat_scat)
433	#endif
434
435	ENDIF
436
437	albedo_keep(1:knon) = (albedo_out(1:knon,1)+albedo_out(1:knon,2))/2.
438
439	!* Send to coupler
440	!
441	IF (ocean=='couple') THEN
442	CALL cpl_send_land_fields(itime, knon, knindex, &
443	riverflow, coastalflow)
444	ENDIF
445
446	alb1_new(1:knon) = albedo_out(1:knon,1)
447	alb2_new(1:knon) = albedo_out(1:knon,2)
448
449	! Convention orchidee: positif vers le haut
450	fluxsens(1:knon) = -1. * fluxsens(1:knon)
451	fluxlat(1:knon) = -1. * fluxlat(1:knon)
452
453	! evap = -1. * evap
454
455	IF (debut) lrestart_read = .FALSE.
456
457	END SUBROUTINE surf_land_orchidee
458	!
459	!****************************************************************************************
460	!
461	SUBROUTINE Init_orchidee_index(knon,orch_comm,knindex,offset,ktindex)
462
463	INCLUDE "dimensions.h"
464
465	#ifdef CPP_PARA
466	INCLUDE 'mpif.h'
467	#endif
468
469
470	! Input arguments
471	!****************************************************************************************
472	INTEGER, INTENT(IN) :: knon
473	INTEGER, INTENT(IN) :: orch_comm
474	INTEGER, DIMENSION(klon), INTENT(IN) :: knindex
475
476	! Output arguments
477	!****************************************************************************************
478	INTEGER, INTENT(OUT) :: offset
479	INTEGER, DIMENSION(knon), INTENT(OUT) :: ktindex
480
481	! Local varables
482	!****************************************************************************************
483	#ifdef CPP_PARA
484	INTEGER, DIMENSION(MPI_STATUS_SIZE) :: status
485	#endif
486
487	INTEGER :: MyLastPoint
488	INTEGER :: LastPoint
489	INTEGER :: mpi_rank_orch
490	INTEGER :: mpi_size_orch
491	INTEGER :: ierr
492	!
493	! End definition
494	!****************************************************************************************
495
496	MyLastPoint=klon_mpi_begin-1+knindex(knon)+iim-1
497
498	IF (is_parallel) THEN
499	#ifdef CPP_PARA
500	CALL MPI_COMM_SIZE(orch_comm,mpi_size_orch,ierr)
501	CALL MPI_COMM_RANK(orch_comm,mpi_rank_orch,ierr)
502	#endif
503	ELSE
504	mpi_rank_orch=0
505	mpi_size_orch=1
506	ENDIF
507
508	IF (is_parallel) THEN
509	IF (mpi_rank_orch /= 0) THEN
510	#ifdef CPP_PARA
511	CALL MPI_RECV(LastPoint,1,MPI_INTEGER,mpi_rank_orch-1,1234,orch_comm,status,ierr)
512	#endif
513	ENDIF
514
515	IF (mpi_rank_orch /= mpi_size_orch-1) THEN
516	#ifdef CPP_PARA
517	CALL MPI_SEND(MyLastPoint,1,MPI_INTEGER,mpi_rank_orch+1,1234,orch_comm,ierr)
518	#endif
519	ENDIF
520	ENDIF
521
522	IF (mpi_rank_orch == 0) THEN
523	offset=0
524	ELSE
525	offset=LastPoint-MOD(LastPoint,iim)
526	ENDIF
527
528	ktindex(1:knon)=knindex(1:knon)+(klon_mpi_begin+iim-1)-offset-1
529
530
531	END SUBROUTINE Init_orchidee_index
532	!
533	!****************************************************************************************
534	!
535	SUBROUTINE Get_orchidee_communicator(knon,orch_comm)
536
537	#ifdef CPP_PARA
538	INCLUDE 'mpif.h'
539	#endif
540
541
542	INTEGER,INTENT(IN) :: knon
543	INTEGER,INTENT(OUT) :: orch_comm
544
545	INTEGER :: color
546	INTEGER :: ierr
547	!
548	! End definition
549	!****************************************************************************************
550
551	IF (knon==0) THEN
552	color = 0
553	ELSE
554	color = 1
555	ENDIF
556
557	#ifdef CPP_PARA
558	CALL MPI_COMM_SPLIT(COMM_LMDZ_PHY,color,mpi_rank,orch_comm,ierr)
559	#endif
560
561	END SUBROUTINE Get_orchidee_communicator
562	!
563	!****************************************************************************************
564	!
565	SUBROUTINE Init_neighbours(knon,neighbours,ktindex,pctsrf)
566
567	INCLUDE "indicesol.h"
568	INCLUDE "dimensions.h"
569	#ifdef CPP_PARA
570	INCLUDE 'mpif.h'
571	#endif
572
573	! Input arguments
574	!****************************************************************************************
575	INTEGER, INTENT(IN) :: knon
576	INTEGER, DIMENSION(klon), INTENT(IN) :: ktindex
577	REAL, DIMENSION(klon), INTENT(IN) :: pctsrf
578
579	! Output arguments
580	!****************************************************************************************
581	INTEGER, DIMENSION(knon,8), INTENT(OUT) :: neighbours
582
583	! Local variables
584	!****************************************************************************************
585	INTEGER :: knon_g
586	INTEGER :: i, igrid, jj, ij, iglob
587	INTEGER :: ierr, ireal, index
588	INTEGER, DIMENSION(0:mpi_size-1) :: knon_nb
589	INTEGER, DIMENSION(0:mpi_size-1) :: displs
590	INTEGER, DIMENSION(8,3) :: off_ini
591	INTEGER, DIMENSION(8) :: offset
592	INTEGER, DIMENSION(knon) :: ktindex_p
593	INTEGER, DIMENSION(iim,jjm+1) :: correspond
594	INTEGER, ALLOCATABLE, DIMENSION(:) :: ktindex_g
595	INTEGER, ALLOCATABLE, DIMENSION(:,:) :: neighbours_g
596	REAL, DIMENSION(klon_glo) :: pctsrf_g
597
598	!
599	! End definition
600	!****************************************************************************************
601
602	IF (is_sequential) THEN
603	knon_nb(:)=knon
604	ELSE
605
606	#ifdef CPP_PARA
607	CALL MPI_GATHER(knon,1,MPI_INTEGER,knon_nb,1,MPI_INTEGER,0,COMM_LMDZ_PHY,ierr)
608	#endif
609
610	ENDIF
611
612	IF (is_mpi_root) THEN
613	knon_g=SUM(knon_nb(:))
614	ALLOCATE(ktindex_g(knon_g))
615	ALLOCATE(neighbours_g(knon_g,8))
616	neighbours_g(:,:)=-1
617	displs(0)=0
618	DO i=1,mpi_size-1
619	displs(i)=displs(i-1)+knon_nb(i-1)
620	ENDDO
621	ENDIF
622
623	ktindex_p(1:knon)=ktindex(1:knon)+klon_mpi_begin-1+iim-1
624
625	IF (is_sequential) THEN
626	ktindex_g(:)=ktindex_p(:)
627	ELSE
628
629	#ifdef CPP_PARA
630	CALL MPI_GATHERV(ktindex_p,knon,MPI_INTEGER,ktindex_g,knon_nb,&
631	displs,MPI_INTEGER,0,COMM_LMDZ_PHY,ierr)
632	#endif
633
634	ENDIF
635
636	CALL Gather(pctsrf,pctsrf_g)
637
638	IF (is_mpi_root) THEN
639	! Initialisation des offset
640	!
641	! offset bord ouest
642	off_ini(1,1) = - iim ; off_ini(2,1) = - iim + 1; off_ini(3,1) = 1
643	off_ini(4,1) = iim + 1; off_ini(5,1) = iim ; off_ini(6,1) = 2 * iim - 1
644	off_ini(7,1) = iim -1 ; off_ini(8,1) = - 1
645	! offset point normal
646	off_ini(1,2) = - iim ; off_ini(2,2) = - iim + 1; off_ini(3,2) = 1
647	off_ini(4,2) = iim + 1; off_ini(5,2) = iim ; off_ini(6,2) = iim - 1
648	off_ini(7,2) = -1 ; off_ini(8,2) = - iim - 1
649	! offset bord est
650	off_ini(1,3) = - iim; off_ini(2,3) = - 2 * iim + 1; off_ini(3,3) = - iim + 1
651	off_ini(4,3) = 1 ; off_ini(5,3) = iim ; off_ini(6,3) = iim - 1
652	off_ini(7,3) = -1 ; off_ini(8,3) = - iim - 1
653	!
654	!
655	! Attention aux poles
656	!
657	DO igrid = 1, knon_g
658	index = ktindex_g(igrid)
659	jj = INT((index - 1)/iim) + 1
660	ij = index - (jj - 1) * iim
661	correspond(ij,jj) = igrid
662	ENDDO
663
664	DO igrid = 1, knon_g
665	iglob = ktindex_g(igrid)
666	IF (MOD(iglob, iim) == 1) THEN
667	offset = off_ini(:,1)
668	ELSE IF(MOD(iglob, iim) == 0) THEN
669	offset = off_ini(:,3)
670	ELSE
671	offset = off_ini(:,2)
672	ENDIF
673	DO i = 1, 8
674	index = iglob + offset(i)
675	ireal = (MIN(MAX(1, index - iim + 1), klon_glo))
676	IF (pctsrf_g(ireal) > EPSFRA) THEN
677	jj = INT((index - 1)/iim) + 1
678	ij = index - (jj - 1) * iim
679	neighbours_g(igrid, i) = correspond(ij, jj)
680	ENDIF
681	ENDDO
682	ENDDO
683
684	ENDIF
685
686	DO i=1,8
687	IF (is_sequential) THEN
688	neighbours(:,i)=neighbours_g(:,i)
689	ELSE
690	#ifdef CPP_PARA
691	CALL MPI_SCATTERV(neighbours_g(:,i),knon_nb,displs,MPI_INTEGER,neighbours(:,i),knon,MPI_INTEGER,0,COMM_LMDZ_PHY,ierr)
692	#endif
693	ENDIF
694	ENDDO
695
696	END SUBROUTINE Init_neighbours
697	!
698	!****************************************************************************************
699	!
700
701	#endif
702
703	END MODULE surf_land_orchidee_mod

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