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calfis.F @ 1615

Last change on this file since 1615 was 1615, checked in by Ehouarn Millour, 12 years ago
Introducing "phydev", the minimal physics package. makegcm and makelmdz_fcm script have been updated to add CPP_PHYS preprocessing key when building with physics and CPP_EARTH for Earth (LMD physics) related routines or instructions in the dynamics. Checked (on Vargas) that "dev" physics package compiles and runs well in all (seq/mpi/omp/mpi_omp) modes and that introduced changes do not modify results when using the "lmd" physics package. EM + FH
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1	!
2	! $Id: calfis.F 1615 2012-02-10 15:42:26Z emillour $
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	cIM calcul PV a teta=350, 380, 405K
437	CALL PVtheta(ngridmx,llm,pucov,pvcov,pteta,
438	$ ztfi,zplay,zplev,
439	$ ntetaSTD,rtetaSTD,PVteta)
440	endif
441	c
442	c On change de grille, dynamique vers physiq, pour le flux de masse verticale
443	CALL gr_dyn_fi(llm,iip1,jjp1,ngridmx,flxw,flxwfi)
444
445	c-----------------------------------------------------------------------
446	c Appel de la physique:
447	c ---------------------
448
449
450
451	! write(lunout,*) 'PHYSIQUE AVEC NSPLIT_PHYS=',nsplit_phys
452	zdt_split=dtphys/nsplit_phys
453	zdufic(:,:)=0.
454	zdvfic(:,:)=0.
455	zdtfic(:,:)=0.
456	zdqfic(:,:,:)=0.
457
458	if (planet_type=="earth") then
459	#ifdef CPP_PHYS
460
461	do isplit=1,nsplit_phys
462
463	jH_cur_split=jH_cur+(isplit-1) * dtvr / (daysec *nsplit_phys)
464	debut_split=debut.and.isplit==1
465	lafin_split=lafin.and.isplit==nsplit_phys
466
467	CALL physiq (ngridmx,
468	. llm,
469	. debut_split,
470	. lafin_split,
471	. jD_cur,
472	. jH_cur_split,
473	. zdt_split,
474	. zplev,
475	. zplay,
476	. zphi,
477	. zphis,
478	. presnivs,
479	. clesphy0,
480	. zufi,
481	. zvfi,
482	. ztfi,
483	. zqfi,
484	. flxwfi,
485	. zdufi,
486	. zdvfi,
487	. zdtfi,
488	. zdqfi,
489	. zdpsrf,
490	cIM diagnostique PVteta, Amip2
491	. pducov,
492	. PVteta)
493
494	zufi(:,:)=zufi(:,:)+zdufi(:,:)*zdt_split
495	zvfi(:,:)=zvfi(:,:)+zdvfi(:,:)*zdt_split
496	ztfi(:,:)=ztfi(:,:)+zdtfi(:,:)*zdt_split
497	zqfi(:,:,:)=zqfi(:,:,:)+zdqfi(:,:,:)*zdt_split
498
499	zdufic(:,:)=zdufic(:,:)+zdufi(:,:)
500	zdvfic(:,:)=zdvfic(:,:)+zdvfi(:,:)
501	zdtfic(:,:)=zdtfic(:,:)+zdtfi(:,:)
502	zdqfic(:,:,:)=zdqfic(:,:,:)+zdqfi(:,:,:)
503
504	enddo ! of do isplit=1,nsplit_phys
505
506	#endif
507	! of #ifdef CPP_PHYS
508	endif ! of if (planet_type=="earth")
509
510	zdufi(:,:)=zdufic(:,:)/nsplit_phys
511	zdvfi(:,:)=zdvfic(:,:)/nsplit_phys
512	zdtfi(:,:)=zdtfic(:,:)/nsplit_phys
513	zdqfi(:,:,:)=zdqfic(:,:,:)/nsplit_phys
514
515
516	500 CONTINUE
517
518	c-----------------------------------------------------------------------
519	c transformation des tendances physiques en tendances dynamiques:
520	c ---------------------------------------------------------------
521
522	c tendance sur la pression :
523	c -----------------------------------
524
525	CALL gr_fi_dyn(1,ngridmx,iip1,jjp1,zdpsrf,pdpsfi)
526	c
527	c 62. enthalpie potentielle
528	c ---------------------
529
530	DO l=1,llm
531
532	DO i=1,iip1
533	pdhfi(i,1,l) = cpp * zdtfi(1,l) / ppk(i, 1 ,l)
534	pdhfi(i,jjp1,l) = cpp * zdtfi(ngridmx,l)/ ppk(i,jjp1,l)
535	ENDDO
536
537	DO j=2,jjm
538	ig0=1+(j-2)*iim
539	DO i=1,iim
540	pdhfi(i,j,l) = cpp * zdtfi(ig0+i,l) / ppk(i,j,l)
541	ENDDO
542	pdhfi(iip1,j,l) = pdhfi(1,j,l)
543	ENDDO
544
545	ENDDO
546
547
548	c 62. humidite specifique
549	c ---------------------
550	! Ehouarn: removed this useless bit: was overwritten at step 63 anyways
551	! DO iq=1,nqtot
552	! DO l=1,llm
553	! DO i=1,iip1
554	! pdqfi(i,1,l,iq) = zdqfi(1,l,iq)
555	! pdqfi(i,jjp1,l,iq) = zdqfi(ngridmx,l,iq)
556	! ENDDO
557	! DO j=2,jjm
558	! ig0=1+(j-2)*iim
559	! DO i=1,iim
560	! pdqfi(i,j,l,iq) = zdqfi(ig0+i,l,iq)
561	! ENDDO
562	! pdqfi(iip1,j,l,iq) = pdqfi(1,j,l,iq)
563	! ENDDO
564	! ENDDO
565	! ENDDO
566
567	c 63. traceurs
568	c ------------
569	C initialisation des tendances
570	pdqfi(:,:,:,:)=0.
571	C
572	DO iq=1,nqtot
573	iiq=niadv(iq)
574	DO l=1,llm
575	DO i=1,iip1
576	pdqfi(i,1,l,iiq) = zdqfi(1,l,iq)
577	pdqfi(i,jjp1,l,iiq) = zdqfi(ngridmx,l,iq)
578	ENDDO
579	DO j=2,jjm
580	ig0=1+(j-2)*iim
581	DO i=1,iim
582	pdqfi(i,j,l,iiq) = zdqfi(ig0+i,l,iq)
583	ENDDO
584	pdqfi(iip1,j,l,iiq) = pdqfi(1,j,l,iq)
585	ENDDO
586	ENDDO
587	ENDDO
588
589	c 65. champ u:
590	c ------------
591
592	DO l=1,llm
593
594	DO i=1,iip1
595	pdufi(i,1,l) = 0.
596	pdufi(i,jjp1,l) = 0.
597	ENDDO
598
599	DO j=2,jjm
600	ig0=1+(j-2)*iim
601	DO i=1,iim-1
602	pdufi(i,j,l)=
603	$ 0.5(zdufi(ig0+i,l)+zdufi(ig0+i+1,l))cu(i,j)
604	ENDDO
605	pdufi(iim,j,l)=
606	$ 0.5(zdufi(ig0+1,l)+zdufi(ig0+iim,l))cu(iim,j)
607	pdufi(iip1,j,l)=pdufi(1,j,l)
608	ENDDO
609
610	ENDDO
611
612
613	c 67. champ v:
614	c ------------
615
616	DO l=1,llm
617
618	DO j=2,jjm-1
619	ig0=1+(j-2)*iim
620	DO i=1,iim
621	pdvfi(i,j,l)=
622	$ 0.5(zdvfi(ig0+i,l)+zdvfi(ig0+i+iim,l))cv(i,j)
623	ENDDO
624	pdvfi(iip1,j,l) = pdvfi(1,j,l)
625	ENDDO
626	ENDDO
627
628
629	c 68. champ v pres des poles:
630	c ---------------------------
631	c v = U * cos(long) + V * SIN(long)
632
633	DO l=1,llm
634
635	DO i=1,iim
636	pdvfi(i,1,l)=
637	$ zdufi(1,l)COS(rlonv(i))+zdvfi(1,l)SIN(rlonv(i))
638	pdvfi(i,jjm,l)=zdufi(ngridmx,l)*COS(rlonv(i))
639	$ +zdvfi(ngridmx,l)*SIN(rlonv(i))
640	pdvfi(i,1,l)=
641	$ 0.5(pdvfi(i,1,l)+zdvfi(i+1,l))cv(i,1)
642	pdvfi(i,jjm,l)=
643	$ 0.5(pdvfi(i,jjm,l)+zdvfi(ngridmx-iip1+i,l))cv(i,jjm)
644	ENDDO
645
646	pdvfi(iip1,1,l) = pdvfi(1,1,l)
647	pdvfi(iip1,jjm,l)= pdvfi(1,jjm,l)
648
649	ENDDO
650
651	c-----------------------------------------------------------------------
652
653	700 CONTINUE
654
655	firstcal = .FALSE.
656
657	RETURN
658	END

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