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leapfrog.F @ 1437

Last change on this file since 1437 was 1437, checked in by Ehouarn Millour, 14 years ago

Implementation of FC's improved Newtonian configuration: more realistic (and tunable) friction & fields towards which to relax and planet parameters (gravity, radius, rotation rate...) can be read in from a planet.def file (this occurs only when running in "newtonian mode"; planet parameters are otherwise read in from the start file).

Checked that these implementation don't change results when running standard Earth bench tests on Vargas.

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

File size: 23.6 KB

Line
1	!
2	! $Id: leapfrog.F 1437 2010-09-30 08:29:10Z emillour $
3	!
4	c
5	c
6	SUBROUTINE leapfrog(ucov,vcov,teta,ps,masse,phis,q,clesphy0,
7	& time_0)
8
9
10	cIM : pour sortir les param. du modele dans un fis. netcdf 110106
11	#ifdef CPP_IOIPSL
12	use IOIPSL
13	#endif
14	USE infotrac
15	USE guide_mod, ONLY : guide_main
16	USE write_field
17	USE control_mod
18	IMPLICIT NONE
19
20	c ...... Version du 10/01/98 ..........
21
22	c avec coordonnees verticales hybrides
23	c avec nouveaux operat. dissipation * ( gradiv2,divgrad2,nxgraro2 )
24
25	c=======================================================================
26	c
27	c Auteur: P. Le Van /L. Fairhead/F.Hourdin
28	c -------
29	c
30	c Objet:
31	c ------
32	c
33	c GCM LMD nouvelle grille
34	c
35	c=======================================================================
36	c
37	c ... Dans inigeom , nouveaux calculs pour les elongations cu , cv
38	c et possibilite d'appeler une fonction f(y) a derivee tangente
39	c hyperbolique a la place de la fonction a derivee sinusoidale.
40
41	c ... Possibilite de choisir le shema pour l'advection de
42	c q , en modifiant iadv dans traceur.def (10/02) .
43	c
44	c Pour Van-Leer + Vapeur d'eau saturee, iadv(1)=4. (F.Codron,10/99)
45	c Pour Van-Leer iadv=10
46	c
47	c-----------------------------------------------------------------------
48	c Declarations:
49	c -------------
50
51	#include "dimensions.h"
52	#include "paramet.h"
53	#include "comconst.h"
54	#include "comdissnew.h"
55	#include "comvert.h"
56	#include "comgeom.h"
57	#include "logic.h"
58	#include "temps.h"
59	#include "ener.h"
60	#include "description.h"
61	#include "serre.h"
62	!#include "com_io_dyn.h"
63	#include "iniprint.h"
64	#include "academic.h"
65
66	! FH 2008/05/09 On elimine toutes les clefs physiques dans la dynamique
67	! #include "clesphys.h"
68
69	INTEGER longcles
70	PARAMETER ( longcles = 20 )
71	REAL clesphy0( longcles )
72
73	real zqmin,zqmax
74	INTEGER nbetatmoy, nbetatdem,nbetat
75
76	c variables dynamiques
77	REAL vcov(ip1jm,llm),ucov(ip1jmp1,llm) ! vents covariants
78	REAL teta(ip1jmp1,llm) ! temperature potentielle
79	REAL q(ip1jmp1,llm,nqtot) ! champs advectes
80	REAL ps(ip1jmp1) ! pression au sol
81	REAL p (ip1jmp1,llmp1 ) ! pression aux interfac.des couches
82	REAL pks(ip1jmp1) ! exner au sol
83	REAL pk(ip1jmp1,llm) ! exner au milieu des couches
84	REAL pkf(ip1jmp1,llm) ! exner filt.au milieu des couches
85	REAL masse(ip1jmp1,llm) ! masse d'air
86	REAL phis(ip1jmp1) ! geopotentiel au sol
87	REAL phi(ip1jmp1,llm) ! geopotentiel
88	REAL w(ip1jmp1,llm) ! vitesse verticale
89
90	c variables dynamiques intermediaire pour le transport
91	REAL pbaru(ip1jmp1,llm),pbarv(ip1jm,llm) !flux de masse
92
93	c variables dynamiques au pas -1
94	REAL vcovm1(ip1jm,llm),ucovm1(ip1jmp1,llm)
95	REAL tetam1(ip1jmp1,llm),psm1(ip1jmp1)
96	REAL massem1(ip1jmp1,llm)
97
98	c tendances dynamiques
99	REAL dv(ip1jm,llm),du(ip1jmp1,llm)
100	REAL dteta(ip1jmp1,llm),dq(ip1jmp1,llm,nqtot),dp(ip1jmp1)
101
102	c tendances de la dissipation
103	REAL dvdis(ip1jm,llm),dudis(ip1jmp1,llm)
104	REAL dtetadis(ip1jmp1,llm)
105
106	c tendances physiques
107	REAL dvfi(ip1jm,llm),dufi(ip1jmp1,llm)
108	REAL dtetafi(ip1jmp1,llm),dqfi(ip1jmp1,llm,nqtot),dpfi(ip1jmp1)
109
110	c variables pour le fichier histoire
111	REAL dtav ! intervalle de temps elementaire
112
113	REAL tppn(iim),tpps(iim),tpn,tps
114	c
115	INTEGER itau,itaufinp1,iav
116	! INTEGER iday ! jour julien
117	REAL time
118
119	REAL SSUM
120	REAL time_0 , finvmaold(ip1jmp1,llm)
121
122	cym LOGICAL lafin
123	LOGICAL :: lafin=.false.
124	INTEGER ij,iq,l
125	INTEGER ik
126
127	real time_step, t_wrt, t_ops
128
129	! REAL rdayvrai,rdaym_ini
130	! jD_cur: jour julien courant
131	! jH_cur: heure julienne courante
132	REAL :: jD_cur, jH_cur
133	INTEGER :: an, mois, jour
134	REAL :: secondes
135
136	LOGICAL first,callinigrads
137	cIM : pour sortir les param. du modele dans un fis. netcdf 110106
138	save first
139	data first/.true./
140	real dt_cum
141	character*10 infile
142	integer zan, tau0, thoriid
143	integer nid_ctesGCM
144	save nid_ctesGCM
145	real degres
146	real rlong(iip1), rlatg(jjp1)
147	real zx_tmp_2d(iip1,jjp1)
148	integer ndex2d(iip1*jjp1)
149	logical ok_sync
150	parameter (ok_sync = .true.)
151
152	data callinigrads/.true./
153	character*10 string10
154
155	REAL alpha(ip1jmp1,llm),beta(ip1jmp1,llm)
156	REAL :: flxw(ip1jmp1,llm) ! flux de masse verticale
157
158	c+jld variables test conservation energie
159	REAL ecin(ip1jmp1,llm),ecin0(ip1jmp1,llm)
160	C Tendance de la temp. potentiel d (theta)/ d t due a la
161	C tansformation d'energie cinetique en energie thermique
162	C cree par la dissipation
163	REAL dtetaecdt(ip1jmp1,llm)
164	REAL vcont(ip1jm,llm),ucont(ip1jmp1,llm)
165	REAL vnat(ip1jm,llm),unat(ip1jmp1,llm)
166	REAL d_h_vcol, d_qt, d_qw, d_ql, d_ec
167	CHARACTER*15 ztit
168	!IM INTEGER ip_ebil_dyn ! PRINT level for energy conserv. diag.
169	!IM SAVE ip_ebil_dyn
170	!IM DATA ip_ebil_dyn/0/
171	c-jld
172
173	character*80 dynhist_file, dynhistave_file
174	character(len=20) :: modname
175	character*80 abort_message
176
177	logical dissip_conservative
178	save dissip_conservative
179	data dissip_conservative/.true./
180
181	LOGICAL prem
182	save prem
183	DATA prem/.true./
184	INTEGER testita
185	PARAMETER (testita = 9)
186
187	logical , parameter :: flag_verif = .false.
188
189
190	integer itau_w ! pas de temps ecriture = itap + itau_phy
191
192
193	itaufin = nday*day_step
194	itaufinp1 = itaufin +1
195	modname="leapfrog"
196
197
198	itau = 0
199	c iday = day_ini+itau/day_step
200	c time = REAL(itau-(iday-day_ini)*day_step)/day_step+time_0
201	c IF(time.GT.1.) THEN
202	c time = time-1.
203	c iday = iday+1
204	c ENDIF
205
206
207	c-----------------------------------------------------------------------
208	c On initialise la pression et la fonction d'Exner :
209	c --------------------------------------------------
210
211	dq=0.
212	CALL pression ( ip1jmp1, ap, bp, ps, p )
213	CALL exner_hyb( ip1jmp1, ps, p,alpha,beta, pks, pk, pkf )
214
215	c-----------------------------------------------------------------------
216	c Debut de l'integration temporelle:
217	c ----------------------------------
218
219	1 CONTINUE
220
221	jD_cur = jD_ref + day_ini - day_ref + int (itau * dtvr / daysec)
222	jH_cur = jH_ref + &
223	& (itau * dtvr / daysec - int(itau * dtvr / daysec))
224
225
226	#ifdef CPP_IOIPSL
227	if (ok_guide) then
228	call guide_main(itau,ucov,vcov,teta,q,masse,ps)
229	endif
230	#endif
231
232
233	c
234	c IF( MOD( itau, 10* day_step ).EQ.0 ) THEN
235	c CALL test_period ( ucov,vcov,teta,q,p,phis )
236	c PRINT *,' ---- Test_period apres continue OK ! -----', itau
237	c ENDIF
238	c
239
240	! Save fields obtained at previous time step as '...m1'
241	CALL SCOPY( ijmllm ,vcov , 1, vcovm1 , 1 )
242	CALL SCOPY( ijp1llm,ucov , 1, ucovm1 , 1 )
243	CALL SCOPY( ijp1llm,teta , 1, tetam1 , 1 )
244	CALL SCOPY( ijp1llm,masse, 1, massem1, 1 )
245	CALL SCOPY( ip1jmp1, ps , 1, psm1 , 1 )
246
247	forward = .TRUE.
248	leapf = .FALSE.
249	dt = dtvr
250
251	c ... P.Le Van .26/04/94 ....
252
253	CALL SCOPY ( ijp1llm, masse, 1, finvmaold, 1 )
254	CALL filtreg ( finvmaold ,jjp1, llm, -2,2, .TRUE., 1 )
255
256	! Ehouarn: what is this for? zqmin & zqmax are not used anyway ...
257	! call minmax(ijp1llm,q(:,:,3),zqmin,zqmax)
258
259	2 CONTINUE
260
261	c-----------------------------------------------------------------------
262
263	c date:
264	c -----
265
266
267	c gestion des appels de la physique et des dissipations:
268	c ------------------------------------------------------
269	c
270	c ... P.Le Van ( 6/02/95 ) ....
271
272	apphys = .FALSE.
273	statcl = .FALSE.
274	conser = .FALSE.
275	apdiss = .FALSE.
276
277	IF( purmats ) THEN
278	! Purely Matsuno time stepping
279	IF( MOD(itau,iconser) .EQ.0.AND. forward ) conser = .TRUE.
280	IF( MOD(itau,idissip ).EQ.0.AND..NOT.forward ) apdiss = .TRUE.
281	IF( MOD(itau,iphysiq ).EQ.0.AND..NOT.forward
282	s .and. iflag_phys.EQ.1 ) apphys = .TRUE.
283	ELSE
284	! Leapfrog/Matsuno time stepping
285	IF( MOD(itau ,iconser) .EQ. 0 ) conser = .TRUE.
286	IF( MOD(itau+1,idissip) .EQ. 0 ) apdiss = .TRUE.
287	IF( MOD(itau+1,iphysiq).EQ.0.AND.iflag_phys.EQ.1) apphys=.TRUE.
288	END IF
289
290	! Ehouarn: for Shallow Water case (ie: 1 vertical layer),
291	! supress dissipation step
292	if (llm.eq.1) then
293	apdiss=.false.
294	endif
295
296	c-----------------------------------------------------------------------
297	c calcul des tendances dynamiques:
298	c --------------------------------
299
300	CALL geopot ( ip1jmp1, teta , pk , pks, phis , phi )
301
302	time = jD_cur + jH_cur
303	CALL caldyn
304	$ ( itau,ucov,vcov,teta,ps,masse,pk,pkf,phis ,
305	$ phi,conser,du,dv,dteta,dp,w, pbaru,pbarv, time )
306
307
308	c-----------------------------------------------------------------------
309	c calcul des tendances advection des traceurs (dont l'humidite)
310	c -------------------------------------------------------------
311
312	IF( forward. OR . leapf ) THEN
313
314	CALL caladvtrac(q,pbaru,pbarv,
315	* p, masse, dq, teta,
316	. flxw, pk)
317
318	IF (offline) THEN
319	Cmaf stokage du flux de masse pour traceurs OFF-LINE
320
321	#ifdef CPP_IOIPSL
322	CALL fluxstokenc(pbaru,pbarv,masse,teta,phi,phis,
323	. dtvr, itau)
324	#endif
325
326
327	ENDIF ! of IF (offline)
328	c
329	ENDIF ! of IF( forward. OR . leapf )
330
331
332	c-----------------------------------------------------------------------
333	c integrations dynamique et traceurs:
334	c ----------------------------------
335
336
337	CALL integrd ( 2,vcovm1,ucovm1,tetam1,psm1,massem1 ,
338	$ dv,du,dteta,dq,dp,vcov,ucov,teta,q,ps,masse,phis ,
339	$ finvmaold )
340
341
342	c .P.Le Van (26/04/94 ajout de finvpold dans l'appel d'integrd)
343	c
344	c-----------------------------------------------------------------------
345	c calcul des tendances physiques:
346	c -------------------------------
347	c ######## P.Le Van ( Modif le 6/02/95 ) ###########
348	c
349	IF( purmats ) THEN
350	IF( itau.EQ.itaufin.AND..NOT.forward ) lafin = .TRUE.
351	ELSE
352	IF( itau+1. EQ. itaufin ) lafin = .TRUE.
353	ENDIF
354	c
355	c
356	IF( apphys ) THEN
357	c
358	c ....... Ajout P.Le Van ( 17/04/96 ) ...........
359	c
360
361	CALL pression ( ip1jmp1, ap, bp, ps, p )
362	CALL exner_hyb( ip1jmp1, ps, p,alpha,beta,pks, pk, pkf )
363
364	! rdaym_ini = itau * dtvr / daysec
365	! rdayvrai = rdaym_ini + day_ini
366	jD_cur = jD_ref + day_ini - day_ref
367	$ + int (itau * dtvr / daysec)
368	jH_cur = jH_ref + &
369	& (itau * dtvr / daysec - int(itau * dtvr / daysec))
370	! write(lunout,*)'itau, jD_cur = ', itau, jD_cur, jH_cur
371	! call ju2ymds(jD_cur+jH_cur, an, mois, jour, secondes)
372	! write(lunout,*)'current date = ',an, mois, jour, secondes
373
374	c rajout debug
375	c lafin = .true.
376
377
378	c Inbterface avec les routines de phylmd (phymars ... )
379	c -----------------------------------------------------
380
381	c+jld
382
383	c Diagnostique de conservation de l'énergie : initialisation
384	IF (ip_ebil_dyn.ge.1 ) THEN
385	ztit='bil dyn'
386	! Ehouarn: be careful, diagedyn is Earth-specific (includes ../phylmd/..)!
387	IF (planet_type.eq."earth") THEN
388	CALL diagedyn(ztit,2,1,1,dtphys
389	& , ucov , vcov , ps, p ,pk , teta , q(:,:,1), q(:,:,2))
390	ENDIF
391	ENDIF ! of IF (ip_ebil_dyn.ge.1 )
392	c-jld
393	#ifdef CPP_IOIPSL
394	cIM : pour sortir les param. du modele dans un fis. netcdf 110106
395	IF (first) THEN
396	first=.false.
397	#include "ini_paramLMDZ_dyn.h"
398	ENDIF
399	c
400	#include "write_paramLMDZ_dyn.h"
401	c
402	#endif
403	! #endif of #ifdef CPP_IOIPSL
404	CALL calfis( lafin , jD_cur, jH_cur,
405	$ ucov,vcov,teta,q,masse,ps,p,pk,phis,phi ,
406	$ du,dv,dteta,dq,
407	$ flxw,
408	$ clesphy0, dufi,dvfi,dtetafi,dqfi,dpfi )
409
410	IF (ok_strato) THEN
411	CALL top_bound( vcov,ucov,teta,masse,dufi,dvfi,dtetafi)
412	ENDIF
413
414	c ajout des tendances physiques:
415	c ------------------------------
416	CALL addfi( dtphys, leapf, forward ,
417	$ ucov, vcov, teta , q ,ps ,
418	$ dufi, dvfi, dtetafi , dqfi ,dpfi )
419	c
420	c Diagnostique de conservation de l'énergie : difference
421	IF (ip_ebil_dyn.ge.1 ) THEN
422	ztit='bil phys'
423	IF (planet_type.eq."earth") THEN
424	CALL diagedyn(ztit,2,1,1,dtphys
425	& , ucov , vcov , ps, p ,pk , teta , q(:,:,1), q(:,:,2))
426	ENDIF
427	ENDIF ! of IF (ip_ebil_dyn.ge.1 )
428
429	ENDIF ! of IF( apphys )
430
431	IF(iflag_phys.EQ.2) THEN ! "Newtonian" case
432	! Academic case : Simple friction and Newtonan relaxation
433	! -------------------------------------------------------
434	DO l=1,llm
435	DO ij=1,ip1jmp1
436	teta(ij,l)=teta(ij,l)-dtvr*
437	& (teta(ij,l)-tetarappel(ij,l))(knewt_g+knewt_t(l)clat4(ij))
438	ENDDO
439	ENDDO ! of DO l=1,llm
440	call friction(ucov,vcov,dtvr)
441
442	! Sponge layer (if any)
443	IF (ok_strato) THEN
444	dufi(:,:)=0.
445	dvfi(:,:)=0.
446	dtetafi(:,:)=0.
447	dqfi(:,:,:)=0.
448	dpfi(:)=0.
449	CALL top_bound(vcov,ucov,teta,masse,dufi,dvfi,dtetafi)
450	CALL addfi( dtvr, leapf, forward ,
451	$ ucov, vcov, teta , q ,ps ,
452	$ dufi, dvfi, dtetafi , dqfi ,dpfi )
453	ENDIF ! of IF (ok_strato)
454	ENDIF ! of IF (iflag_phys.EQ.2)
455
456
457	c-jld
458
459	CALL pression ( ip1jmp1, ap, bp, ps, p )
460	CALL exner_hyb( ip1jmp1, ps, p,alpha,beta, pks, pk, pkf )
461
462
463	c-----------------------------------------------------------------------
464	c dissipation horizontale et verticale des petites echelles:
465	c ----------------------------------------------------------
466
467	IF(apdiss) THEN
468
469
470	c calcul de l'energie cinetique avant dissipation
471	call covcont(llm,ucov,vcov,ucont,vcont)
472	call enercin(vcov,ucov,vcont,ucont,ecin0)
473
474	c dissipation
475	CALL dissip(vcov,ucov,teta,p,dvdis,dudis,dtetadis)
476	ucov=ucov+dudis
477	vcov=vcov+dvdis
478	c teta=teta+dtetadis
479
480
481	c------------------------------------------------------------------------
482	if (dissip_conservative) then
483	C On rajoute la tendance due a la transform. Ec -> E therm. cree
484	C lors de la dissipation
485	call covcont(llm,ucov,vcov,ucont,vcont)
486	call enercin(vcov,ucov,vcont,ucont,ecin)
487	dtetaecdt= (ecin0-ecin)/ pk
488	c teta=teta+dtetaecdt
489	dtetadis=dtetadis+dtetaecdt
490	endif
491	teta=teta+dtetadis
492	c------------------------------------------------------------------------
493
494
495	c ....... P. Le Van ( ajout le 17/04/96 ) ...........
496	c ... Calcul de la valeur moyenne, unique de h aux poles .....
497	c
498
499	DO l = 1, llm
500	DO ij = 1,iim
501	tppn(ij) = aire( ij ) * teta( ij ,l)
502	tpps(ij) = aire(ij+ip1jm) * teta(ij+ip1jm,l)
503	ENDDO
504	tpn = SSUM(iim,tppn,1)/apoln
505	tps = SSUM(iim,tpps,1)/apols
506
507	DO ij = 1, iip1
508	teta( ij ,l) = tpn
509	teta(ij+ip1jm,l) = tps
510	ENDDO
511	ENDDO
512
513	DO ij = 1,iim
514	tppn(ij) = aire( ij ) * ps ( ij )
515	tpps(ij) = aire(ij+ip1jm) * ps (ij+ip1jm)
516	ENDDO
517	tpn = SSUM(iim,tppn,1)/apoln
518	tps = SSUM(iim,tpps,1)/apols
519
520	DO ij = 1, iip1
521	ps( ij ) = tpn
522	ps(ij+ip1jm) = tps
523	ENDDO
524
525
526	END IF ! of IF(apdiss)
527
528	c ajout debug
529	c IF( lafin ) then
530	c abort_message = 'Simulation finished'
531	c call abort_gcm(modname,abort_message,0)
532	c ENDIF
533
534	c ********************************************************************
535	c ********************************************************************
536	c .... fin de l'integration dynamique et physique pour le pas itau ..
537	c ********************************************************************
538	c ********************************************************************
539
540	c preparation du pas d'integration suivant ......
541
542	IF ( .NOT.purmats ) THEN
543	c ........................................................
544	c .............. schema matsuno + leapfrog ..............
545	c ........................................................
546
547	IF(forward. OR. leapf) THEN
548	itau= itau + 1
549	c iday= day_ini+itau/day_step
550	c time= REAL(itau-(iday-day_ini)*day_step)/day_step+time_0
551	c IF(time.GT.1.) THEN
552	c time = time-1.
553	c iday = iday+1
554	c ENDIF
555	ENDIF
556
557
558	IF( itau. EQ. itaufinp1 ) then
559	if (flag_verif) then
560	write(79,*) 'ucov',ucov
561	write(80,*) 'vcov',vcov
562	write(81,*) 'teta',teta
563	write(82,*) 'ps',ps
564	write(83,*) 'q',q
565	WRITE(85,*) 'q1 = ',q(:,:,1)
566	WRITE(86,*) 'q3 = ',q(:,:,3)
567	endif
568
569	abort_message = 'Simulation finished'
570
571	call abort_gcm(modname,abort_message,0)
572	ENDIF
573	c-----------------------------------------------------------------------
574	c ecriture du fichier histoire moyenne:
575	c -------------------------------------
576
577	IF(MOD(itau,iperiod).EQ.0 .OR. itau.EQ.itaufin) THEN
578	IF(itau.EQ.itaufin) THEN
579	iav=1
580	ELSE
581	iav=0
582	ENDIF
583
584	IF (ok_dynzon) THEN
585	#ifdef CPP_IOIPSL
586	CALL bilan_dyn(2,dtvriperiod,dtvrday_step*periodav,
587	& ps,masse,pk,pbaru,pbarv,teta,phi,ucov,vcov,q)
588	#endif
589	END IF
590	IF (ok_dyn_ave) THEN
591	#ifdef CPP_IOIPSL
592	CALL writedynav(itau,vcov,
593	& ucov,teta,pk,phi,q,masse,ps,phis)
594	#endif
595	ENDIF
596
597	ENDIF ! of IF((MOD(itau,iperiod).EQ.0).OR.(itau.EQ.itaufin))
598
599	c-----------------------------------------------------------------------
600	c ecriture de la bande histoire:
601	c ------------------------------
602
603	IF( MOD(itau,iecri).EQ.0) THEN
604	! Ehouarn: output only during LF or Backward Matsuno
605	if (leapf.or.(.not.leapf.and.(.not.forward))) then
606	nbetat = nbetatdem
607	CALL geopot(ip1jmp1,teta,pk,pks,phis,phi)
608	unat=0.
609	do l=1,llm
610	unat(iip2:ip1jm,l)=ucov(iip2:ip1jm,l)/cu(iip2:ip1jm)
611	vnat(:,l)=vcov(:,l)/cv(:)
612	enddo
613	#ifdef CPP_IOIPSL
614	if (ok_dyn_ins) then
615	! write(lunout,*) "leapfrog: call writehist, itau=",itau
616	CALL writehist(itau,vcov,ucov,teta,phi,q,masse,ps,phis)
617	! call WriteField('ucov',reshape(ucov,(/iip1,jmp1,llm/)))
618	! call WriteField('vcov',reshape(vcov,(/iip1,jjm,llm/)))
619	! call WriteField('teta',reshape(teta,(/iip1,jmp1,llm/)))
620	! call WriteField('ps',reshape(ps,(/iip1,jmp1/)))
621	! call WriteField('masse',reshape(masse,(/iip1,jmp1,llm/)))
622	endif ! of if (ok_dyn_ins)
623	#endif
624	! For some Grads outputs of fields
625	if (output_grads_dyn) then
626	#include "write_grads_dyn.h"
627	endif
628	endif ! of if (leapf.or.(.not.leapf.and.(.not.forward)))
629	ENDIF ! of IF(MOD(itau,iecri).EQ.0)
630
631	IF(itau.EQ.itaufin) THEN
632
633
634	if (planet_type.eq."earth") then
635	! Write an Earth-format restart file
636	CALL dynredem1("restart.nc",0.0,
637	& vcov,ucov,teta,q,masse,ps)
638	endif ! of if (planet_type.eq."earth")
639
640	CLOSE(99)
641	ENDIF ! of IF (itau.EQ.itaufin)
642
643	c-----------------------------------------------------------------------
644	c gestion de l'integration temporelle:
645	c ------------------------------------
646
647	IF( MOD(itau,iperiod).EQ.0 ) THEN
648	GO TO 1
649	ELSE IF ( MOD(itau-1,iperiod). EQ. 0 ) THEN
650
651	IF( forward ) THEN
652	c fin du pas forward et debut du pas backward
653
654	forward = .FALSE.
655	leapf = .FALSE.
656	GO TO 2
657
658	ELSE
659	c fin du pas backward et debut du premier pas leapfrog
660
661	leapf = .TRUE.
662	dt = 2.*dtvr
663	GO TO 2
664	END IF ! of IF (forward)
665	ELSE
666
667	c ...... pas leapfrog .....
668
669	leapf = .TRUE.
670	dt = 2.*dtvr
671	GO TO 2
672	END IF ! of IF (MOD(itau,iperiod).EQ.0)
673	! ELSEIF (MOD(itau-1,iperiod).EQ.0)
674
675	ELSE ! of IF (.not.purmats)
676
677	c ........................................................
678	c .............. schema matsuno ...............
679	c ........................................................
680	IF( forward ) THEN
681
682	itau = itau + 1
683	c iday = day_ini+itau/day_step
684	c time = REAL(itau-(iday-day_ini)*day_step)/day_step+time_0
685	c
686	c IF(time.GT.1.) THEN
687	c time = time-1.
688	c iday = iday+1
689	c ENDIF
690
691	forward = .FALSE.
692	IF( itau. EQ. itaufinp1 ) then
693	abort_message = 'Simulation finished'
694	call abort_gcm(modname,abort_message,0)
695	ENDIF
696	GO TO 2
697
698	ELSE ! of IF(forward) i.e. backward step
699
700	IF(MOD(itau,iperiod).EQ.0 .OR. itau.EQ.itaufin) THEN
701	IF(itau.EQ.itaufin) THEN
702	iav=1
703	ELSE
704	iav=0
705	ENDIF
706
707	IF (ok_dynzon) THEN
708	#ifdef CPP_IOIPSL
709	CALL bilan_dyn(2,dtvriperiod,dtvrday_step*periodav,
710	& ps,masse,pk,pbaru,pbarv,teta,phi,ucov,vcov,q)
711	#endif
712	ENDIF
713	IF (ok_dyn_ave) THEN
714	#ifdef CPP_IOIPSL
715	CALL writedynav(itau,vcov,
716	& ucov,teta,pk,phi,q,masse,ps,phis)
717	#endif
718	ENDIF
719
720	ENDIF ! of IF(MOD(itau,iperiod).EQ.0 .OR. itau.EQ.itaufin)
721
722	IF(MOD(itau,iecri ).EQ.0) THEN
723	c IF(MOD(itau,iecri*day_step).EQ.0) THEN
724	nbetat = nbetatdem
725	CALL geopot(ip1jmp1,teta,pk,pks,phis,phi)
726	unat=0.
727	do l=1,llm
728	unat(iip2:ip1jm,l)=ucov(iip2:ip1jm,l)/cu(iip2:ip1jm)
729	vnat(:,l)=vcov(:,l)/cv(:)
730	enddo
731	#ifdef CPP_IOIPSL
732	if (ok_dyn_ins) then
733	! write(lunout,*) "leapfrog: call writehist (b)",
734	! & itau,iecri
735	CALL writehist(itau,vcov,ucov,teta,phi,q,masse,ps,phis)
736	endif ! of if (ok_dyn_ins)
737	#endif
738	! For some Grads outputs
739	if (output_grads_dyn) then
740	#include "write_grads_dyn.h"
741	endif
742
743	ENDIF ! of IF(MOD(itau,iecri ).EQ.0)
744
745	IF(itau.EQ.itaufin) THEN
746	if (planet_type.eq."earth") then
747	CALL dynredem1("restart.nc",0.0,
748	& vcov,ucov,teta,q,masse,ps)
749	endif ! of if (planet_type.eq."earth")
750	ENDIF ! of IF(itau.EQ.itaufin)
751
752	forward = .TRUE.
753	GO TO 1
754
755	ENDIF ! of IF (forward)
756
757	END IF ! of IF(.not.purmats)
758
759	STOP
760	END

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