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calfis.F @ 1410

Last change on this file since 1410 was 1363, checked in by Ehouarn Millour, 15 years ago

Added possibility to run in "Shallow Water" mode. SW mode is automatically set if the number of atmospheric layers is 1.
To use SW mode, the model should be compiled without physics (makelmdz_fcm -p nophys) and/or without calls to the physics (i.e. set iflag_phys=0 in gcm.def).

-Updated some definitions and comments in run.def & gcm.def

-Fixed misplaced #ifdef CPP_EARTH in calfis.F + some write(lunout,*)

-Specific initialisation of fields for SW are done in sw_case_williamson91_6 (called by iniacademic, when read_start=.false.)

Checked (on Vargas & Brodie) that these changes don't alter usual bench GCM outputs.

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

File size: 18.1 KB

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1	!
2	! $Id: calfis.F 1363 2010-04-16 09:50:10Z jghattas $
3	!
4	C
5	C
6	SUBROUTINE calfis(lafin,
7	$ jD_cur, jH_cur,
8	$ pucov,
9	$ pvcov,
10	$ pteta,
11	$ pq,
12	$ pmasse,
13	$ pps,
14	$ pp,
15	$ ppk,
16	$ pphis,
17	$ pphi,
18	$ pducov,
19	$ pdvcov,
20	$ pdteta,
21	$ pdq,
22	$ flxw,
23	$ clesphy0,
24	$ pdufi,
25	$ pdvfi,
26	$ pdhfi,
27	$ pdqfi,
28	$ pdpsfi)
29	c
30	c Auteur : P. Le Van, F. Hourdin
31	c .........
32	USE infotrac
33	USE control_mod
34
35
36	IMPLICIT NONE
37	c=======================================================================
38	c
39	c 1. rearrangement des tableaux et transformation
40	c variables dynamiques > variables physiques
41	c 2. calcul des termes physiques
42	c 3. retransformation des tendances physiques en tendances dynamiques
43	c
44	c remarques:
45	c ----------
46	c
47	c - les vents sont donnes dans la physique par leurs composantes
48	c naturelles.
49	c - la variable thermodynamique de la physique est une variable
50	c intensive : T
51	c pour la dynamique on prend T * ( preff / p(l) ) **kappa
52	c - les deux seules variables dependant de la geometrie necessaires
53	c pour la physique sont la latitude pour le rayonnement et
54	c l'aire de la maille quand on veut integrer une grandeur
55	c horizontalement.
56	c - les points de la physique sont les points scalaires de la
57	c la dynamique; numerotation:
58	c 1 pour le pole nord
59	c (jjm-1)*iim pour l'interieur du domaine
60	c ngridmx pour le pole sud
61	c ---> ngridmx=2+(jjm-1)*iim
62	c
63	c Input :
64	c -------
65	c pucov covariant zonal velocity
66	c pvcov covariant meridional velocity
67	c pteta potential temperature
68	c pps surface pressure
69	c pmasse masse d'air dans chaque maille
70	c pts surface temperature (K)
71	c callrad clef d'appel au rayonnement
72	c
73	c Output :
74	c --------
75	c pdufi tendency for the natural zonal velocity (ms-1)
76	c pdvfi tendency for the natural meridional velocity
77	c pdhfi tendency for the potential temperature
78	c pdtsfi tendency for the surface temperature
79	c
80	c pdtrad radiative tendencies \ both input
81	c pfluxrad radiative fluxes / and output
82	c
83	c=======================================================================
84	c
85	c-----------------------------------------------------------------------
86	c
87	c 0. Declarations :
88	c ------------------
89
90	#include "dimensions.h"
91	#include "paramet.h"
92	#include "temps.h"
93
94	INTEGER ngridmx
95	PARAMETER( ngridmx = 2+(jjm-1)*iim - 1/jjm )
96
97	#include "comconst.h"
98	#include "comvert.h"
99	#include "comgeom2.h"
100	#include "iniprint.h"
101
102	c Arguments :
103	c -----------
104	LOGICAL lafin
105
106
107	REAL pvcov(iip1,jjm,llm)
108	REAL pucov(iip1,jjp1,llm)
109	REAL pteta(iip1,jjp1,llm)
110	REAL pmasse(iip1,jjp1,llm)
111	REAL pq(iip1,jjp1,llm,nqtot)
112	REAL pphis(iip1,jjp1)
113	REAL pphi(iip1,jjp1,llm)
114	c
115	REAL pdvcov(iip1,jjm,llm)
116	REAL pducov(iip1,jjp1,llm)
117	REAL pdteta(iip1,jjp1,llm)
118	REAL pdq(iip1,jjp1,llm,nqtot)
119	c
120	REAL pps(iip1,jjp1)
121	REAL pp(iip1,jjp1,llmp1)
122	REAL ppk(iip1,jjp1,llm)
123	c
124	REAL pdvfi(iip1,jjm,llm)
125	REAL pdufi(iip1,jjp1,llm)
126	REAL pdhfi(iip1,jjp1,llm)
127	REAL pdqfi(iip1,jjp1,llm,nqtot)
128	REAL pdpsfi(iip1,jjp1)
129
130	INTEGER longcles
131	PARAMETER ( longcles = 20 )
132	REAL clesphy0( longcles )
133
134
135	c Local variables :
136	c -----------------
137
138	INTEGER i,j,l,ig0,ig,iq,iiq
139	REAL zpsrf(ngridmx)
140	REAL zplev(ngridmx,llm+1),zplay(ngridmx,llm)
141	REAL zphi(ngridmx,llm),zphis(ngridmx)
142	c
143	REAL zufi(ngridmx,llm), zvfi(ngridmx,llm)
144	REAL ztfi(ngridmx,llm),zqfi(ngridmx,llm,nqtot)
145	c
146	REAL pcvgu(ngridmx,llm), pcvgv(ngridmx,llm)
147	REAL pcvgt(ngridmx,llm), pcvgq(ngridmx,llm,2)
148	c
149	REAL zdufi(ngridmx,llm),zdvfi(ngridmx,llm)
150	REAL zdtfi(ngridmx,llm),zdqfi(ngridmx,llm,nqtot)
151	REAL zdpsrf(ngridmx)
152	c
153	REAL zdufic(ngridmx,llm),zdvfic(ngridmx,llm)
154	REAL zdtfic(ngridmx,llm),zdqfic(ngridmx,llm,nqtot)
155	REAL jH_cur_split,zdt_split
156	LOGICAL debut_split,lafin_split
157	INTEGER isplit
158
159	REAL zsin(iim),zcos(iim),z1(iim)
160	REAL zsinbis(iim),zcosbis(iim),z1bis(iim)
161	REAL unskap, pksurcp
162	c
163	cIM diagnostique PVteta, Amip2
164	INTEGER ntetaSTD
165	PARAMETER(ntetaSTD=3)
166	REAL rtetaSTD(ntetaSTD)
167	DATA rtetaSTD/350., 380., 405./
168	REAL PVteta(ngridmx,ntetaSTD)
169	c
170	REAL flxw(iip1,jjp1,llm) ! Flux de masse verticale sur la grille dynamique
171	REAL flxwfi(ngridmx,llm) ! Flux de masse verticale sur la grille physiq
172	c
173
174	REAL SSUM
175
176	LOGICAL firstcal, debut
177	DATA firstcal/.true./
178	SAVE firstcal,debut
179	! REAL rdayvrai
180	REAL, intent(in):: jD_cur, jH_cur
181	c
182	c-----------------------------------------------------------------------
183	c
184	c 1. Initialisations :
185	c --------------------
186	c
187	c
188	IF ( firstcal ) THEN
189	debut = .TRUE.
190	IF (ngridmx.NE.2+(jjm-1)*iim) THEN
191	write(lunout,*) 'STOP dans calfis'
192	write(lunout,*)
193	& 'La dimension ngridmx doit etre egale a 2 + (jjm-1)*iim'
194	write(lunout,*) ' ngridmx jjm iim '
195	write(lunout,*) ngridmx,jjm,iim
196	STOP
197	ENDIF
198	ELSE
199	debut = .FALSE.
200	ENDIF ! of IF (firstcal)
201
202	c
203	c
204	c-----------------------------------------------------------------------
205	c 40. transformation des variables dynamiques en variables physiques:
206	c ---------------------------------------------------------------
207
208	c 41. pressions au sol (en Pascals)
209	c ----------------------------------
210
211
212	zpsrf(1) = pps(1,1)
213
214	ig0 = 2
215	DO j = 2,jjm
216	CALL SCOPY( iim,pps(1,j),1,zpsrf(ig0), 1 )
217	ig0 = ig0+iim
218	ENDDO
219
220	zpsrf(ngridmx) = pps(1,jjp1)
221
222
223	c 42. pression intercouches :
224	c
225	c -----------------------------------------------------------------
226	c .... zplev definis aux (llm +1) interfaces des couches ....
227	c .... zplay definis aux ( llm ) milieux des couches ....
228	c -----------------------------------------------------------------
229
230	c ... Exner = cp * ( p(l) / preff ) ** kappa ....
231	c
232	unskap = 1./ kappa
233	c
234	DO l = 1, llmp1
235	zplev( 1,l ) = pp(1,1,l)
236	ig0 = 2
237	DO j = 2, jjm
238	DO i =1, iim
239	zplev( ig0,l ) = pp(i,j,l)
240	ig0 = ig0 +1
241	ENDDO
242	ENDDO
243	zplev( ngridmx,l ) = pp(1,jjp1,l)
244	ENDDO
245	c
246	c
247
248	c 43. temperature naturelle (en K) et pressions milieux couches .
249	c ---------------------------------------------------------------
250
251	DO l=1,llm
252
253	pksurcp = ppk(1,1,l) / cpp
254	zplay(1,l) = preff * pksurcp ** unskap
255	ztfi(1,l) = pteta(1,1,l) * pksurcp
256	pcvgt(1,l) = pdteta(1,1,l) * pksurcp / pmasse(1,1,l)
257	ig0 = 2
258
259	DO j = 2, jjm
260	DO i = 1, iim
261	pksurcp = ppk(i,j,l) / cpp
262	zplay(ig0,l) = preff * pksurcp ** unskap
263	ztfi(ig0,l) = pteta(i,j,l) * pksurcp
264	pcvgt(ig0,l) = pdteta(i,j,l) * pksurcp / pmasse(i,j,l)
265	ig0 = ig0 + 1
266	ENDDO
267	ENDDO
268
269	pksurcp = ppk(1,jjp1,l) / cpp
270	zplay(ig0,l) = preff * pksurcp ** unskap
271	ztfi (ig0,l) = pteta(1,jjp1,l) * pksurcp
272	pcvgt(ig0,l) = pdteta(1,jjp1,l) * pksurcp/ pmasse(1,jjp1,l)
273
274	ENDDO
275
276	c 43.bis traceurs
277	c ---------------
278	c
279	DO iq=1,nqtot
280	iiq=niadv(iq)
281	DO l=1,llm
282	zqfi(1,l,iq) = pq(1,1,l,iiq)
283	ig0 = 2
284	DO j=2,jjm
285	DO i = 1, iim
286	zqfi(ig0,l,iq) = pq(i,j,l,iiq)
287	ig0 = ig0 + 1
288	ENDDO
289	ENDDO
290	zqfi(ig0,l,iq) = pq(1,jjp1,l,iiq)
291	ENDDO
292	ENDDO
293
294	c convergence dynamique pour les traceurs "EAU"
295	! Earth-specific treatment of first 2 tracers (water)
296	if (planet_type=="earth") then
297	DO iq=1,2
298	DO l=1,llm
299	pcvgq(1,l,iq)= pdq(1,1,l,iq) / pmasse(1,1,l)
300	ig0 = 2
301	DO j=2,jjm
302	DO i = 1, iim
303	pcvgq(ig0,l,iq) = pdq(i,j,l,iq) / pmasse(i,j,l)
304	ig0 = ig0 + 1
305	ENDDO
306	ENDDO
307	pcvgq(ig0,l,iq)= pdq(1,jjp1,l,iq) / pmasse(1,jjp1,l)
308	ENDDO
309	ENDDO
310	endif ! of if (planet_type=="earth")
311
312
313	c Geopotentiel calcule par rapport a la surface locale:
314	c -----------------------------------------------------
315
316	CALL gr_dyn_fi(llm,iip1,jjp1,ngridmx,pphi,zphi)
317	CALL gr_dyn_fi(1,iip1,jjp1,ngridmx,pphis,zphis)
318	DO l=1,llm
319	DO ig=1,ngridmx
320	zphi(ig,l)=zphi(ig,l)-zphis(ig)
321	ENDDO
322	ENDDO
323
324	c .... Calcul de la vitesse verticale ( en Pams ou Kg/s ) ....
325	c JG : ancien calcule de omega utilise dans physiq.F. Maintenant le flux
326	c de masse est calclue dans advtrac.F
327	c DO l=1,llm
328	c pvervel(1,l)=pw(1,1,l) * g /apoln
329	c ig0=2
330	c DO j=2,jjm
331	c DO i = 1, iim
332	c pvervel(ig0,l) = pw(i,j,l) * g * unsaire(i,j)
333	c ig0 = ig0 + 1
334	c ENDDO
335	c ENDDO
336	c pvervel(ig0,l)=pw(1,jjp1,l) * g /apols
337	c ENDDO
338
339	c
340	c 45. champ u:
341	c ------------
342
343	DO 50 l=1,llm
344
345	DO 25 j=2,jjm
346	ig0 = 1+(j-2)*iim
347	zufi(ig0+1,l)= 0.5 *
348	$ ( pucov(iim,j,l)/cu(iim,j) + pucov(1,j,l)/cu(1,j) )
349	pcvgu(ig0+1,l)= 0.5 *
350	$ ( pducov(iim,j,l)/cu(iim,j) + pducov(1,j,l)/cu(1,j) )
351	DO 10 i=2,iim
352	zufi(ig0+i,l)= 0.5 *
353	$ ( pucov(i-1,j,l)/cu(i-1,j) + pucov(i,j,l)/cu(i,j) )
354	pcvgu(ig0+i,l)= 0.5 *
355	$ ( pducov(i-1,j,l)/cu(i-1,j) + pducov(i,j,l)/cu(i,j) )
356	10 CONTINUE
357	25 CONTINUE
358
359	50 CONTINUE
360
361
362	c 46.champ v:
363	c -----------
364
365	DO l=1,llm
366	DO j=2,jjm
367	ig0=1+(j-2)*iim
368	DO i=1,iim
369	zvfi(ig0+i,l)= 0.5 *
370	$ ( pvcov(i,j-1,l)/cv(i,j-1) + pvcov(i,j,l)/cv(i,j) )
371	pcvgv(ig0+i,l)= 0.5 *
372	$ ( pdvcov(i,j-1,l)/cv(i,j-1) + pdvcov(i,j,l)/cv(i,j) )
373	ENDDO
374	ENDDO
375	ENDDO
376
377
378	c 47. champs de vents aux pole nord
379	c ------------------------------
380	c U = 1 / pi * integrale [ v * cos(long) * d long ]
381	c V = 1 / pi * integrale [ v * sin(long) * d long ]
382
383	DO l=1,llm
384
385	z1(1) =(rlonu(1)-rlonu(iim)+2.pi)pvcov(1,1,l)/cv(1,1)
386	z1bis(1)=(rlonu(1)-rlonu(iim)+2.pi)pdvcov(1,1,l)/cv(1,1)
387	DO i=2,iim
388	z1(i) =(rlonu(i)-rlonu(i-1))*pvcov(i,1,l)/cv(i,1)
389	z1bis(i)=(rlonu(i)-rlonu(i-1))*pdvcov(i,1,l)/cv(i,1)
390	ENDDO
391
392	DO i=1,iim
393	zcos(i) = COS(rlonv(i))*z1(i)
394	zcosbis(i)= COS(rlonv(i))*z1bis(i)
395	zsin(i) = SIN(rlonv(i))*z1(i)
396	zsinbis(i)= SIN(rlonv(i))*z1bis(i)
397	ENDDO
398
399	zufi(1,l) = SSUM(iim,zcos,1)/pi
400	pcvgu(1,l) = SSUM(iim,zcosbis,1)/pi
401	zvfi(1,l) = SSUM(iim,zsin,1)/pi
402	pcvgv(1,l) = SSUM(iim,zsinbis,1)/pi
403
404	ENDDO
405
406
407	c 48. champs de vents aux pole sud:
408	c ---------------------------------
409	c U = 1 / pi * integrale [ v * cos(long) * d long ]
410	c V = 1 / pi * integrale [ v * sin(long) * d long ]
411
412	DO l=1,llm
413
414	z1(1) =(rlonu(1)-rlonu(iim)+2.pi)pvcov(1,jjm,l)/cv(1,jjm)
415	z1bis(1)=(rlonu(1)-rlonu(iim)+2.pi)pdvcov(1,jjm,l)/cv(1,jjm)
416	DO i=2,iim
417	z1(i) =(rlonu(i)-rlonu(i-1))*pvcov(i,jjm,l)/cv(i,jjm)
418	z1bis(i)=(rlonu(i)-rlonu(i-1))*pdvcov(i,jjm,l)/cv(i,jjm)
419	ENDDO
420
421	DO i=1,iim
422	zcos(i) = COS(rlonv(i))*z1(i)
423	zcosbis(i) = COS(rlonv(i))*z1bis(i)
424	zsin(i) = SIN(rlonv(i))*z1(i)
425	zsinbis(i) = SIN(rlonv(i))*z1bis(i)
426	ENDDO
427
428	zufi(ngridmx,l) = SSUM(iim,zcos,1)/pi
429	pcvgu(ngridmx,l) = SSUM(iim,zcosbis,1)/pi
430	zvfi(ngridmx,l) = SSUM(iim,zsin,1)/pi
431	pcvgv(ngridmx,l) = SSUM(iim,zsinbis,1)/pi
432
433	ENDDO
434	c
435	if (planet_type=="earth") then
436	#ifdef CPP_EARTH
437	cIM calcul PV a teta=350, 380, 405K
438	CALL PVtheta(ngridmx,llm,pucov,pvcov,pteta,
439	$ ztfi,zplay,zplev,
440	$ ntetaSTD,rtetaSTD,PVteta)
441	#endif
442	endif
443	c
444	c On change de grille, dynamique vers physiq, pour le flux de masse verticale
445	CALL gr_dyn_fi(llm,iip1,jjp1,ngridmx,flxw,flxwfi)
446
447	c-----------------------------------------------------------------------
448	c Appel de la physique:
449	c ---------------------
450
451
452	if (planet_type=="earth") then
453	#ifdef CPP_EARTH
454
455	write(lunout,*) 'PHYSIQUE AVEC NSPLIT_PHYS=',nsplit_phys
456	zdt_split=dtphys/nsplit_phys
457	zdufic(:,:)=0.
458	zdvfic(:,:)=0.
459	zdtfic(:,:)=0.
460	zdqfic(:,:,:)=0.
461
462	do isplit=1,nsplit_phys
463
464	jH_cur_split=jH_cur+(isplit-1) * dtvr / (daysec *nsplit_phys)
465	debut_split=debut.and.isplit==1
466	lafin_split=lafin.and.isplit==nsplit_phys
467
468	CALL physiq (ngridmx,
469	. llm,
470	. debut_split,
471	. lafin_split,
472	. jD_cur,
473	. jH_cur_split,
474	. zdt_split,
475	. zplev,
476	. zplay,
477	. zphi,
478	. zphis,
479	. presnivs,
480	. clesphy0,
481	. zufi,
482	. zvfi,
483	. ztfi,
484	. zqfi,
485	. flxwfi,
486	. zdufi,
487	. zdvfi,
488	. zdtfi,
489	. zdqfi,
490	. zdpsrf,
491	cIM diagnostique PVteta, Amip2
492	. pducov,
493	. PVteta)
494
495	zufi(:,:)=zufi(:,:)+zdufi(:,:)*zdt_split
496	zvfi(:,:)=zvfi(:,:)+zdvfi(:,:)*zdt_split
497	ztfi(:,:)=ztfi(:,:)+zdtfi(:,:)*zdt_split
498	zqfi(:,:,:)=zqfi(:,:,:)+zdqfi(:,:,:)*zdt_split
499
500	zdufic(:,:)=zdufic(:,:)+zdufi(:,:)
501	zdvfic(:,:)=zdvfic(:,:)+zdvfi(:,:)
502	zdtfic(:,:)=zdtfic(:,:)+zdtfi(:,:)
503	zdqfic(:,:,:)=zdqfic(:,:,:)+zdqfi(:,:,:)
504
505	enddo
506	zdufi(:,:)=zdufic(:,:)/nsplit_phys
507	zdvfi(:,:)=zdvfic(:,:)/nsplit_phys
508	zdtfi(:,:)=zdtfic(:,:)/nsplit_phys
509	zdqfi(:,:,:)=zdqfic(:,:,:)/nsplit_phys
510
511	#endif
512	endif !of if (planet_type=="earth")
513
514	500 CONTINUE
515
516	c-----------------------------------------------------------------------
517	c transformation des tendances physiques en tendances dynamiques:
518	c ---------------------------------------------------------------
519
520	c tendance sur la pression :
521	c -----------------------------------
522
523	CALL gr_fi_dyn(1,ngridmx,iip1,jjp1,zdpsrf,pdpsfi)
524	c
525	c 62. enthalpie potentielle
526	c ---------------------
527
528	DO l=1,llm
529
530	DO i=1,iip1
531	pdhfi(i,1,l) = cpp * zdtfi(1,l) / ppk(i, 1 ,l)
532	pdhfi(i,jjp1,l) = cpp * zdtfi(ngridmx,l)/ ppk(i,jjp1,l)
533	ENDDO
534
535	DO j=2,jjm
536	ig0=1+(j-2)*iim
537	DO i=1,iim
538	pdhfi(i,j,l) = cpp * zdtfi(ig0+i,l) / ppk(i,j,l)
539	ENDDO
540	pdhfi(iip1,j,l) = pdhfi(1,j,l)
541	ENDDO
542
543	ENDDO
544
545
546	c 62. humidite specifique
547	c ---------------------
548	! Ehouarn: removed this useless bit: was overwritten at step 63 anyways
549	! DO iq=1,nqtot
550	! DO l=1,llm
551	! DO i=1,iip1
552	! pdqfi(i,1,l,iq) = zdqfi(1,l,iq)
553	! pdqfi(i,jjp1,l,iq) = zdqfi(ngridmx,l,iq)
554	! ENDDO
555	! DO j=2,jjm
556	! ig0=1+(j-2)*iim
557	! DO i=1,iim
558	! pdqfi(i,j,l,iq) = zdqfi(ig0+i,l,iq)
559	! ENDDO
560	! pdqfi(iip1,j,l,iq) = pdqfi(1,j,l,iq)
561	! ENDDO
562	! ENDDO
563	! ENDDO
564
565	c 63. traceurs
566	c ------------
567	C initialisation des tendances
568	pdqfi(:,:,:,:)=0.
569	C
570	DO iq=1,nqtot
571	iiq=niadv(iq)
572	DO l=1,llm
573	DO i=1,iip1
574	pdqfi(i,1,l,iiq) = zdqfi(1,l,iq)
575	pdqfi(i,jjp1,l,iiq) = zdqfi(ngridmx,l,iq)
576	ENDDO
577	DO j=2,jjm
578	ig0=1+(j-2)*iim
579	DO i=1,iim
580	pdqfi(i,j,l,iiq) = zdqfi(ig0+i,l,iq)
581	ENDDO
582	pdqfi(iip1,j,l,iiq) = pdqfi(1,j,l,iq)
583	ENDDO
584	ENDDO
585	ENDDO
586
587	c 65. champ u:
588	c ------------
589
590	DO l=1,llm
591
592	DO i=1,iip1
593	pdufi(i,1,l) = 0.
594	pdufi(i,jjp1,l) = 0.
595	ENDDO
596
597	DO j=2,jjm
598	ig0=1+(j-2)*iim
599	DO i=1,iim-1
600	pdufi(i,j,l)=
601	$ 0.5(zdufi(ig0+i,l)+zdufi(ig0+i+1,l))cu(i,j)
602	ENDDO
603	pdufi(iim,j,l)=
604	$ 0.5(zdufi(ig0+1,l)+zdufi(ig0+iim,l))cu(iim,j)
605	pdufi(iip1,j,l)=pdufi(1,j,l)
606	ENDDO
607
608	ENDDO
609
610
611	c 67. champ v:
612	c ------------
613
614	DO l=1,llm
615
616	DO j=2,jjm-1
617	ig0=1+(j-2)*iim
618	DO i=1,iim
619	pdvfi(i,j,l)=
620	$ 0.5(zdvfi(ig0+i,l)+zdvfi(ig0+i+iim,l))cv(i,j)
621	ENDDO
622	pdvfi(iip1,j,l) = pdvfi(1,j,l)
623	ENDDO
624	ENDDO
625
626
627	c 68. champ v pres des poles:
628	c ---------------------------
629	c v = U * cos(long) + V * SIN(long)
630
631	DO l=1,llm
632
633	DO i=1,iim
634	pdvfi(i,1,l)=
635	$ zdufi(1,l)COS(rlonv(i))+zdvfi(1,l)SIN(rlonv(i))
636	pdvfi(i,jjm,l)=zdufi(ngridmx,l)*COS(rlonv(i))
637	$ +zdvfi(ngridmx,l)*SIN(rlonv(i))
638	pdvfi(i,1,l)=
639	$ 0.5(pdvfi(i,1,l)+zdvfi(i+1,l))cv(i,1)
640	pdvfi(i,jjm,l)=
641	$ 0.5(pdvfi(i,jjm,l)+zdvfi(ngridmx-iip1+i,l))cv(i,jjm)
642	ENDDO
643
644	pdvfi(iip1,1,l) = pdvfi(1,1,l)
645	pdvfi(iip1,jjm,l)= pdvfi(1,jjm,l)
646
647	ENDDO
648
649	c-----------------------------------------------------------------------
650
651	700 CONTINUE
652
653	firstcal = .FALSE.
654
655	RETURN
656	END

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