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leapfrog.F @ 2618

Last change on this file since 2618 was 2603, checked in by Ehouarn Millour, 8 years ago
Cleanup in the dynamics: turn logic.h into module logic_mod.F90 EM
Property copyright set to Name of program: LMDZ Creation date: 1984 Version: LMDZ5 License: CeCILL version 2 Holder: Laboratoire de m\'et\'eorologie dynamique, CNRS, UMR 8539 See the license file in the root directory Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 28.6 KB

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1	!
2	! $Id: leapfrog.F 2603 2016-07-25 09:31:56Z oboucher $
3	!
4	c
5	c
6	SUBROUTINE leapfrog(ucov,vcov,teta,ps,masse,phis,q,time_0)
7
8
9	cIM : pour sortir les param. du modele dans un fis. netcdf 110106
10	#ifdef CPP_IOIPSL
11	use IOIPSL
12	#endif
13	USE infotrac, ONLY: nqtot,ok_iso_verif
14	USE guide_mod, ONLY : guide_main
15	USE write_field, ONLY: writefield
16	USE control_mod, ONLY: nday, day_step, planet_type, offline,
17	& iconser, iphysiq, iperiod, dissip_period,
18	& iecri, ip_ebil_dyn, ok_dynzon, ok_dyn_ins,
19	& periodav, ok_dyn_ave, output_grads_dyn
20	use exner_hyb_m, only: exner_hyb
21	use exner_milieu_m, only: exner_milieu
22	USE comvert_mod, ONLY: ap,bp,pressure_exner,presnivs
23	USE comconst_mod, ONLY: cpp, dtphys, dtvr, pi, ihf
24	USE logic_mod, ONLY: iflag_phys,ok_guide,forward,leapf,apphys,
25	& statcl,conser,apdiss,purmats,ok_strato
26	USE temps_mod, ONLY: jD_ref,jH_ref,itaufin,day_ini,day_ref,
27	& start_time,dt
28
29	IMPLICIT NONE
30
31	c ...... Version du 10/01/98 ..........
32
33	c avec coordonnees verticales hybrides
34	c avec nouveaux operat. dissipation * ( gradiv2,divgrad2,nxgraro2 )
35
36	c=======================================================================
37	c
38	c Auteur: P. Le Van /L. Fairhead/F.Hourdin
39	c -------
40	c
41	c Objet:
42	c ------
43	c
44	c GCM LMD nouvelle grille
45	c
46	c=======================================================================
47	c
48	c ... Dans inigeom , nouveaux calculs pour les elongations cu , cv
49	c et possibilite d'appeler une fonction f(y) a derivee tangente
50	c hyperbolique a la place de la fonction a derivee sinusoidale.
51
52	c ... Possibilite de choisir le shema pour l'advection de
53	c q , en modifiant iadv dans traceur.def (10/02) .
54	c
55	c Pour Van-Leer + Vapeur d'eau saturee, iadv(1)=4. (F.Codron,10/99)
56	c Pour Van-Leer iadv=10
57	c
58	c-----------------------------------------------------------------------
59	c Declarations:
60	c -------------
61
62	include "dimensions.h"
63	include "paramet.h"
64	include "comdissnew.h"
65	include "comgeom.h"
66	include "ener.h"
67	include "description.h"
68	include "iniprint.h"
69	include "academic.h"
70
71	REAL,INTENT(IN) :: time_0 ! not used
72
73	c dynamical variables:
74	REAL,INTENT(INOUT) :: ucov(ip1jmp1,llm) ! zonal covariant wind
75	REAL,INTENT(INOUT) :: vcov(ip1jm,llm) ! meridional covariant wind
76	REAL,INTENT(INOUT) :: teta(ip1jmp1,llm) ! potential temperature
77	REAL,INTENT(INOUT) :: ps(ip1jmp1) ! surface pressure (Pa)
78	REAL,INTENT(INOUT) :: masse(ip1jmp1,llm) ! air mass
79	REAL,INTENT(INOUT) :: phis(ip1jmp1) ! geopotentiat at the surface
80	REAL,INTENT(INOUT) :: q(ip1jmp1,llm,nqtot) ! advected tracers
81
82	REAL p (ip1jmp1,llmp1 ) ! interlayer pressure
83	REAL pks(ip1jmp1) ! exner at the surface
84	REAL pk(ip1jmp1,llm) ! exner at mid-layer
85	REAL pkf(ip1jmp1,llm) ! filtered exner at mid-layer
86	REAL phi(ip1jmp1,llm) ! geopotential
87	REAL w(ip1jmp1,llm) ! vertical velocity
88
89	real zqmin,zqmax
90
91	c variables dynamiques intermediaire pour le transport
92	REAL pbaru(ip1jmp1,llm),pbarv(ip1jm,llm) !flux de masse
93
94	c variables dynamiques au pas -1
95	REAL vcovm1(ip1jm,llm),ucovm1(ip1jmp1,llm)
96	REAL tetam1(ip1jmp1,llm),psm1(ip1jmp1)
97	REAL massem1(ip1jmp1,llm)
98
99	c tendances dynamiques
100	REAL dv(ip1jm,llm),du(ip1jmp1,llm)
101	REAL dteta(ip1jmp1,llm),dq(ip1jmp1,llm,nqtot),dp(ip1jmp1)
102
103	c tendances de la dissipation
104	REAL dvdis(ip1jm,llm),dudis(ip1jmp1,llm)
105	REAL dtetadis(ip1jmp1,llm)
106
107	c tendances physiques
108	REAL dvfi(ip1jm,llm),dufi(ip1jmp1,llm)
109	REAL dtetafi(ip1jmp1,llm),dqfi(ip1jmp1,llm,nqtot),dpfi(ip1jmp1)
110
111	c variables pour le fichier histoire
112	REAL dtav ! intervalle de temps elementaire
113
114	REAL tppn(iim),tpps(iim),tpn,tps
115	c
116	INTEGER itau,itaufinp1,iav
117	! INTEGER iday ! jour julien
118	REAL time
119
120	REAL SSUM
121	! REAL finvmaold(ip1jmp1,llm)
122
123	cym LOGICAL lafin
124	LOGICAL :: lafin=.false.
125	INTEGER ij,iq,l
126	INTEGER ik
127
128	real time_step, t_wrt, t_ops
129
130	! REAL rdayvrai,rdaym_ini
131	! jD_cur: jour julien courant
132	! jH_cur: heure julienne courante
133	REAL :: jD_cur, jH_cur
134	INTEGER :: an, mois, jour
135	REAL :: secondes
136
137	LOGICAL first,callinigrads
138	cIM : pour sortir les param. du modele dans un fis. netcdf 110106
139	save first
140	data first/.true./
141	real dt_cum
142	character*10 infile
143	integer zan, tau0, thoriid
144	integer nid_ctesGCM
145	save nid_ctesGCM
146	real degres
147	real rlong(iip1), rlatg(jjp1)
148	real zx_tmp_2d(iip1,jjp1)
149	integer ndex2d(iip1*jjp1)
150	logical ok_sync
151	parameter (ok_sync = .true.)
152	logical physic
153
154	data callinigrads/.true./
155	character*10 string10
156
157	REAL :: flxw(ip1jmp1,llm) ! flux de masse verticale
158
159	c+jld variables test conservation energie
160	REAL ecin(ip1jmp1,llm),ecin0(ip1jmp1,llm)
161	C Tendance de la temp. potentiel d (theta)/ d t due a la
162	C tansformation d'energie cinetique en energie thermique
163	C cree par la dissipation
164	REAL dtetaecdt(ip1jmp1,llm)
165	REAL vcont(ip1jm,llm),ucont(ip1jmp1,llm)
166	REAL vnat(ip1jm,llm),unat(ip1jmp1,llm)
167	REAL d_h_vcol, d_qt, d_qw, d_ql, d_ec
168	CHARACTER*15 ztit
169	!IM INTEGER ip_ebil_dyn ! PRINT level for energy conserv. diag.
170	!IM SAVE ip_ebil_dyn
171	!IM DATA ip_ebil_dyn/0/
172	c-jld
173
174	character*80 dynhist_file, dynhistave_file
175	character(len=*),parameter :: modname="leapfrog"
176	character*80 abort_message
177
178	logical dissip_conservative
179	save dissip_conservative
180	data dissip_conservative/.true./
181
182	LOGICAL prem
183	save prem
184	DATA prem/.true./
185	INTEGER testita
186	PARAMETER (testita = 9)
187
188	logical , parameter :: flag_verif = .false.
189
190
191	integer itau_w ! pas de temps ecriture = itap + itau_phy
192
193
194	if (nday>=0) then
195	itaufin = nday*day_step
196	else
197	itaufin = -nday
198	endif
199	itaufinp1 = itaufin +1
200	itau = 0
201	physic=.true.
202	if (iflag_phys==0.or.iflag_phys==2) physic=.false.
203
204	c iday = day_ini+itau/day_step
205	c time = REAL(itau-(iday-day_ini)*day_step)/day_step+time_0
206	c IF(time.GT.1.) THEN
207	c time = time-1.
208	c iday = iday+1
209	c ENDIF
210
211
212	c-----------------------------------------------------------------------
213	c On initialise la pression et la fonction d'Exner :
214	c --------------------------------------------------
215
216	dq(:,:,:)=0.
217	CALL pression ( ip1jmp1, ap, bp, ps, p )
218	if (pressure_exner) then
219	CALL exner_hyb( ip1jmp1, ps, p, pks, pk, pkf )
220	else
221	CALL exner_milieu( ip1jmp1, ps, p, pks, pk, pkf )
222	endif
223
224	c-----------------------------------------------------------------------
225	c Debut de l'integration temporelle:
226	c ----------------------------------
227
228	1 CONTINUE ! Matsuno Forward step begins here
229
230	c date: (NB: date remains unchanged for Backward step)
231	c -----
232
233	jD_cur = jD_ref + day_ini - day_ref + &
234	& (itau+1)/day_step
235	jH_cur = jH_ref + start_time + &
236	& mod(itau+1,day_step)/float(day_step)
237	jD_cur = jD_cur + int(jH_cur)
238	jH_cur = jH_cur - int(jH_cur)
239
240	if (ok_iso_verif) then
241	call check_isotopes_seq(q,ip1jmp1,'leapfrog 321')
242	endif !if (ok_iso_verif) then
243
244	#ifdef CPP_IOIPSL
245	if (ok_guide) then
246	call guide_main(itau,ucov,vcov,teta,q,masse,ps)
247	endif
248	#endif
249
250
251	c
252	c IF( MOD( itau, 10* day_step ).EQ.0 ) THEN
253	c CALL test_period ( ucov,vcov,teta,q,p,phis )
254	c PRINT *,' ---- Test_period apres continue OK ! -----', itau
255	c ENDIF
256	c
257
258	! Save fields obtained at previous time step as '...m1'
259	CALL SCOPY( ijmllm ,vcov , 1, vcovm1 , 1 )
260	CALL SCOPY( ijp1llm,ucov , 1, ucovm1 , 1 )
261	CALL SCOPY( ijp1llm,teta , 1, tetam1 , 1 )
262	CALL SCOPY( ijp1llm,masse, 1, massem1, 1 )
263	CALL SCOPY( ip1jmp1, ps , 1, psm1 , 1 )
264
265	forward = .TRUE.
266	leapf = .FALSE.
267	dt = dtvr
268
269	c ... P.Le Van .26/04/94 ....
270	! Ehouarn: finvmaold is actually not used
271	! CALL SCOPY ( ijp1llm, masse, 1, finvmaold, 1 )
272	! CALL filtreg ( finvmaold ,jjp1, llm, -2,2, .TRUE., 1 )
273
274	if (ok_iso_verif) then
275	call check_isotopes_seq(q,ip1jmp1,'leapfrog 400')
276	endif !if (ok_iso_verif) then
277
278	2 CONTINUE ! Matsuno backward or leapfrog step begins here
279
280	c-----------------------------------------------------------------------
281
282	c date: (NB: only leapfrog step requires recomputing date)
283	c -----
284
285	IF (leapf) THEN
286	jD_cur = jD_ref + day_ini - day_ref +
287	& (itau+1)/day_step
288	jH_cur = jH_ref + start_time +
289	& mod(itau+1,day_step)/float(day_step)
290	jD_cur = jD_cur + int(jH_cur)
291	jH_cur = jH_cur - int(jH_cur)
292	ENDIF
293
294
295	c gestion des appels de la physique et des dissipations:
296	c ------------------------------------------------------
297	c
298	c ... P.Le Van ( 6/02/95 ) ....
299
300	apphys = .FALSE.
301	statcl = .FALSE.
302	conser = .FALSE.
303	apdiss = .FALSE.
304
305	IF( purmats ) THEN
306	! Purely Matsuno time stepping
307	IF( MOD(itau,iconser) .EQ.0.AND. forward ) conser = .TRUE.
308	IF( MOD(itau,dissip_period ).EQ.0.AND..NOT.forward )
309	s apdiss = .TRUE.
310	IF( MOD(itau,iphysiq ).EQ.0.AND..NOT.forward
311	s .and. physic ) apphys = .TRUE.
312	ELSE
313	! Leapfrog/Matsuno time stepping
314	IF( MOD(itau ,iconser) .EQ. 0 ) conser = .TRUE.
315	IF( MOD(itau+1,dissip_period).EQ.0 .AND. .NOT. forward )
316	s apdiss = .TRUE.
317	IF( MOD(itau+1,iphysiq).EQ.0.AND.physic ) apphys=.TRUE.
318	END IF
319
320	! Ehouarn: for Shallow Water case (ie: 1 vertical layer),
321	! supress dissipation step
322	if (llm.eq.1) then
323	apdiss=.false.
324	endif
325
326
327	if (ok_iso_verif) then
328	call check_isotopes_seq(q,ip1jmp1,'leapfrog 589')
329	endif !if (ok_iso_verif) then
330
331	c-----------------------------------------------------------------------
332	c calcul des tendances dynamiques:
333	c --------------------------------
334
335	! compute geopotential phi()
336	CALL geopot ( ip1jmp1, teta , pk , pks, phis , phi )
337
338	time = jD_cur + jH_cur
339	CALL caldyn
340	$ ( itau,ucov,vcov,teta,ps,masse,pk,pkf,phis ,
341	$ phi,conser,du,dv,dteta,dp,w, pbaru,pbarv, time )
342
343
344	c-----------------------------------------------------------------------
345	c calcul des tendances advection des traceurs (dont l'humidite)
346	c -------------------------------------------------------------
347
348	if (ok_iso_verif) then
349	call check_isotopes_seq(q,ip1jmp1,
350	& 'leapfrog 686: avant caladvtrac')
351	endif !if (ok_iso_verif) then
352
353	IF( forward. OR . leapf ) THEN
354	! Ehouarn: NB: fields sent to advtrac are those at the beginning of the time step
355	CALL caladvtrac(q,pbaru,pbarv,
356	* p, masse, dq, teta,
357	. flxw, pk)
358	!write(,) 'caladvtrac 346'
359
360
361	IF (offline) THEN
362	Cmaf stokage du flux de masse pour traceurs OFF-LINE
363
364	#ifdef CPP_IOIPSL
365	CALL fluxstokenc(pbaru,pbarv,masse,teta,phi,phis,
366	. dtvr, itau)
367	#endif
368
369
370	ENDIF ! of IF (offline)
371	c
372	ENDIF ! of IF( forward. OR . leapf )
373
374
375	c-----------------------------------------------------------------------
376	c integrations dynamique et traceurs:
377	c ----------------------------------
378
379	if (ok_iso_verif) then
380	write(,) 'leapfrog 720'
381	call check_isotopes_seq(q,ip1jmp1,'leapfrog 756')
382	endif !if (ok_iso_verif) then
383
384	CALL integrd ( nqtot,vcovm1,ucovm1,tetam1,psm1,massem1 ,
385	$ dv,du,dteta,dq,dp,vcov,ucov,teta,q,ps,masse,phis )
386	! $ finvmaold )
387
388	if (ok_iso_verif) then
389	write(,) 'leapfrog 724'
390	call check_isotopes_seq(q,ip1jmp1,'leapfrog 762')
391	endif !if (ok_iso_verif) then
392
393	c .P.Le Van (26/04/94 ajout de finvpold dans l'appel d'integrd)
394	c
395	c-----------------------------------------------------------------------
396	c calcul des tendances physiques:
397	c -------------------------------
398	c ######## P.Le Van ( Modif le 6/02/95 ) ###########
399	c
400	IF( purmats ) THEN
401	IF( itau.EQ.itaufin.AND..NOT.forward ) lafin = .TRUE.
402	ELSE
403	IF( itau+1. EQ. itaufin ) lafin = .TRUE.
404	ENDIF
405	c
406	c
407	IF( apphys ) THEN
408	c
409	c ....... Ajout P.Le Van ( 17/04/96 ) ...........
410	c
411
412	CALL pression ( ip1jmp1, ap, bp, ps, p )
413	if (pressure_exner) then
414	CALL exner_hyb( ip1jmp1, ps, p,pks, pk, pkf )
415	else
416	CALL exner_milieu( ip1jmp1, ps, p, pks, pk, pkf )
417	endif
418
419	! Appel a geopot ajoute le 2014/05/08 pour garantir la convergence numerique
420	! avec dyn3dmem
421	CALL geopot ( ip1jmp1, teta , pk , pks, phis , phi )
422
423	! rdaym_ini = itau * dtvr / daysec
424	! rdayvrai = rdaym_ini + day_ini
425	! jD_cur = jD_ref + day_ini - day_ref
426	! $ + int (itau * dtvr / daysec)
427	! jH_cur = jH_ref + &
428	! & (itau * dtvr / daysec - int(itau * dtvr / daysec))
429	jD_cur = jD_ref + day_ini - day_ref + &
430	& (itau+1)/day_step
431
432	IF (planet_type .eq."generic") THEN
433	! AS: we make jD_cur to be pday
434	jD_cur = int(day_ini + itau/day_step)
435	ENDIF
436
437	jH_cur = jH_ref + start_time + &
438	& mod(itau+1,day_step)/float(day_step)
439	jD_cur = jD_cur + int(jH_cur)
440	jH_cur = jH_cur - int(jH_cur)
441	! write(lunout,*)'itau, jD_cur = ', itau, jD_cur, jH_cur
442	! call ju2ymds(jD_cur+jH_cur, an, mois, jour, secondes)
443	! write(lunout,*)'current date = ',an, mois, jour, secondes
444
445	c rajout debug
446	c lafin = .true.
447
448
449	c Inbterface avec les routines de phylmd (phymars ... )
450	c -----------------------------------------------------
451
452	c+jld
453
454	c Diagnostique de conservation de l'énergie : initialisation
455	IF (ip_ebil_dyn.ge.1 ) THEN
456	ztit='bil dyn'
457	! Ehouarn: be careful, diagedyn is Earth-specific!
458	IF (planet_type.eq."earth") THEN
459	CALL diagedyn(ztit,2,1,1,dtphys
460	& , ucov , vcov , ps, p ,pk , teta , q(:,:,1), q(:,:,2))
461	ENDIF
462	ENDIF ! of IF (ip_ebil_dyn.ge.1 )
463	c-jld
464	#ifdef CPP_IOIPSL
465	cIM decommenter les 6 lignes suivantes pour sortir quelques parametres dynamiques de LMDZ
466	cIM uncomment next 6 lines to get some parameters for LMDZ dynamics
467	c IF (first) THEN
468	c first=.false.
469	c#include "ini_paramLMDZ_dyn.h"
470	c ENDIF
471	c
472	c#include "write_paramLMDZ_dyn.h"
473	c
474	#endif
475	! #endif of #ifdef CPP_IOIPSL
476	#ifdef CPP_PHYS
477	CALL calfis( lafin , jD_cur, jH_cur,
478	$ ucov,vcov,teta,q,masse,ps,p,pk,phis,phi ,
479	$ du,dv,dteta,dq,
480	$ flxw,dufi,dvfi,dtetafi,dqfi,dpfi )
481	#endif
482	c ajout des tendances physiques:
483	c ------------------------------
484	CALL addfi( dtphys, leapf, forward ,
485	$ ucov, vcov, teta , q ,ps ,
486	$ dufi, dvfi, dtetafi , dqfi ,dpfi )
487	! since addfi updates ps(), also update p(), masse() and pk()
488	CALL pression (ip1jmp1,ap,bp,ps,p)
489	CALL massdair(p,masse)
490	if (pressure_exner) then
491	CALL exner_hyb(ip1jmp1,ps,p,pks,pk,pkf)
492	else
493	CALL exner_milieu(ip1jmp1,ps,p,pks,pk,pkf)
494	endif
495
496	IF (ok_strato) THEN
497	CALL top_bound( vcov,ucov,teta,masse,dtphys)
498	ENDIF
499
500	c
501	c Diagnostique de conservation de l'énergie : difference
502	IF (ip_ebil_dyn.ge.1 ) THEN
503	ztit='bil phys'
504	IF (planet_type.eq."earth") THEN
505	CALL diagedyn(ztit,2,1,1,dtphys
506	& , ucov , vcov , ps, p ,pk , teta , q(:,:,1), q(:,:,2))
507	ENDIF
508	ENDIF ! of IF (ip_ebil_dyn.ge.1 )
509
510	ENDIF ! of IF( apphys )
511
512	IF(iflag_phys.EQ.2) THEN ! "Newtonian" case
513	! Academic case : Simple friction and Newtonan relaxation
514	! -------------------------------------------------------
515	DO l=1,llm
516	DO ij=1,ip1jmp1
517	teta(ij,l)=teta(ij,l)-dtvr*
518	& (teta(ij,l)-tetarappel(ij,l))(knewt_g+knewt_t(l)clat4(ij))
519	ENDDO
520	ENDDO ! of DO l=1,llm
521
522	if (planet_type.eq."giant") then
523	! add an intrinsic heat flux at the base of the atmosphere
524	teta(:,1)=teta(:,1)+dtvraire(:)ihf/cpp/masse(:,1)
525	endif
526
527	call friction(ucov,vcov,dtvr)
528
529	! Sponge layer (if any)
530	IF (ok_strato) THEN
531	! dufi(:,:)=0.
532	! dvfi(:,:)=0.
533	! dtetafi(:,:)=0.
534	! dqfi(:,:,:)=0.
535	! dpfi(:)=0.
536	! CALL top_bound(vcov,ucov,teta,masse,dufi,dvfi,dtetafi)
537	CALL top_bound( vcov,ucov,teta,masse,dtvr)
538	! CALL addfi( dtvr, leapf, forward ,
539	! $ ucov, vcov, teta , q ,ps ,
540	! $ dufi, dvfi, dtetafi , dqfi ,dpfi )
541	ENDIF ! of IF (ok_strato)
542	ENDIF ! of IF (iflag_phys.EQ.2)
543
544
545	c-jld
546
547	CALL pression ( ip1jmp1, ap, bp, ps, p )
548	if (pressure_exner) then
549	CALL exner_hyb( ip1jmp1, ps, p, pks, pk, pkf )
550	else
551	CALL exner_milieu( ip1jmp1, ps, p, pks, pk, pkf )
552	endif
553	CALL massdair(p,masse)
554
555	if (ok_iso_verif) then
556	call check_isotopes_seq(q,ip1jmp1,'leapfrog 1196')
557	endif !if (ok_iso_verif) then
558
559	c-----------------------------------------------------------------------
560	c dissipation horizontale et verticale des petites echelles:
561	c ----------------------------------------------------------
562
563	IF(apdiss) THEN
564
565
566	c calcul de l'energie cinetique avant dissipation
567	call covcont(llm,ucov,vcov,ucont,vcont)
568	call enercin(vcov,ucov,vcont,ucont,ecin0)
569
570	c dissipation
571	CALL dissip(vcov,ucov,teta,p,dvdis,dudis,dtetadis)
572	ucov=ucov+dudis
573	vcov=vcov+dvdis
574	c teta=teta+dtetadis
575
576
577	c------------------------------------------------------------------------
578	if (dissip_conservative) then
579	C On rajoute la tendance due a la transform. Ec -> E therm. cree
580	C lors de la dissipation
581	call covcont(llm,ucov,vcov,ucont,vcont)
582	call enercin(vcov,ucov,vcont,ucont,ecin)
583	dtetaecdt= (ecin0-ecin)/ pk
584	c teta=teta+dtetaecdt
585	dtetadis=dtetadis+dtetaecdt
586	endif
587	teta=teta+dtetadis
588	c------------------------------------------------------------------------
589
590
591	c ....... P. Le Van ( ajout le 17/04/96 ) ...........
592	c ... Calcul de la valeur moyenne, unique de h aux poles .....
593	c
594
595	DO l = 1, llm
596	DO ij = 1,iim
597	tppn(ij) = aire( ij ) * teta( ij ,l)
598	tpps(ij) = aire(ij+ip1jm) * teta(ij+ip1jm,l)
599	ENDDO
600	tpn = SSUM(iim,tppn,1)/apoln
601	tps = SSUM(iim,tpps,1)/apols
602
603	DO ij = 1, iip1
604	teta( ij ,l) = tpn
605	teta(ij+ip1jm,l) = tps
606	ENDDO
607	ENDDO
608
609	if (1 == 0) then
610	!!! Ehouarn: lines here 1) kill 1+1=2 in the dynamics
611	!!! 2) should probably not be here anyway
612	!!! but are kept for those who would want to revert to previous behaviour
613	DO ij = 1,iim
614	tppn(ij) = aire( ij ) * ps ( ij )
615	tpps(ij) = aire(ij+ip1jm) * ps (ij+ip1jm)
616	ENDDO
617	tpn = SSUM(iim,tppn,1)/apoln
618	tps = SSUM(iim,tpps,1)/apols
619
620	DO ij = 1, iip1
621	ps( ij ) = tpn
622	ps(ij+ip1jm) = tps
623	ENDDO
624	endif ! of if (1 == 0)
625
626	END IF ! of IF(apdiss)
627
628	c ajout debug
629	c IF( lafin ) then
630	c abort_message = 'Simulation finished'
631	c call abort_gcm(modname,abort_message,0)
632	c ENDIF
633
634	c ********************************************************************
635	c ********************************************************************
636	c .... fin de l'integration dynamique et physique pour le pas itau ..
637	c ********************************************************************
638	c ********************************************************************
639
640	c preparation du pas d'integration suivant ......
641
642	if (ok_iso_verif) then
643	call check_isotopes_seq(q,ip1jmp1,'leapfrog 1509')
644	endif !if (ok_iso_verif) then
645
646	IF ( .NOT.purmats ) THEN
647	c ........................................................
648	c .............. schema matsuno + leapfrog ..............
649	c ........................................................
650
651	IF(forward. OR. leapf) THEN
652	itau= itau + 1
653	c iday= day_ini+itau/day_step
654	c time= REAL(itau-(iday-day_ini)*day_step)/day_step+time_0
655	c IF(time.GT.1.) THEN
656	c time = time-1.
657	c iday = iday+1
658	c ENDIF
659	ENDIF
660
661
662	IF( itau. EQ. itaufinp1 ) then
663	if (flag_verif) then
664	write(79,*) 'ucov',ucov
665	write(80,*) 'vcov',vcov
666	write(81,*) 'teta',teta
667	write(82,*) 'ps',ps
668	write(83,*) 'q',q
669	WRITE(85,*) 'q1 = ',q(:,:,1)
670	WRITE(86,*) 'q3 = ',q(:,:,3)
671	endif
672
673	abort_message = 'Simulation finished'
674
675	call abort_gcm(modname,abort_message,0)
676	ENDIF
677	c-----------------------------------------------------------------------
678	c ecriture du fichier histoire moyenne:
679	c -------------------------------------
680
681	IF(MOD(itau,iperiod).EQ.0 .OR. itau.EQ.itaufin) THEN
682	IF(itau.EQ.itaufin) THEN
683	iav=1
684	ELSE
685	iav=0
686	ENDIF
687
688	! ! Ehouarn: re-compute geopotential for outputs
689	CALL geopot(ip1jmp1,teta,pk,pks,phis,phi)
690
691	IF (ok_dynzon) THEN
692	#ifdef CPP_IOIPSL
693	CALL bilan_dyn(2,dtvriperiod,dtvrday_step*periodav,
694	& ps,masse,pk,pbaru,pbarv,teta,phi,ucov,vcov,q)
695	#endif
696	END IF
697	IF (ok_dyn_ave) THEN
698	#ifdef CPP_IOIPSL
699	CALL writedynav(itau,vcov,
700	& ucov,teta,pk,phi,q,masse,ps,phis)
701	#endif
702	ENDIF
703
704	ENDIF ! of IF((MOD(itau,iperiod).EQ.0).OR.(itau.EQ.itaufin))
705
706	if (ok_iso_verif) then
707	call check_isotopes_seq(q,ip1jmp1,'leapfrog 1584')
708	endif !if (ok_iso_verif) then
709
710	c-----------------------------------------------------------------------
711	c ecriture de la bande histoire:
712	c ------------------------------
713
714	IF( MOD(itau,iecri).EQ.0) THEN
715	! Ehouarn: output only during LF or Backward Matsuno
716	if (leapf.or.(.not.leapf.and.(.not.forward))) then
717	CALL geopot(ip1jmp1,teta,pk,pks,phis,phi)
718	unat=0.
719	do l=1,llm
720	unat(iip2:ip1jm,l)=ucov(iip2:ip1jm,l)/cu(iip2:ip1jm)
721	vnat(:,l)=vcov(:,l)/cv(:)
722	enddo
723	#ifdef CPP_IOIPSL
724	if (ok_dyn_ins) then
725	! write(lunout,*) "leapfrog: call writehist, itau=",itau
726	CALL writehist(itau,vcov,ucov,teta,phi,q,masse,ps,phis)
727	! call WriteField('ucov',reshape(ucov,(/iip1,jmp1,llm/)))
728	! call WriteField('vcov',reshape(vcov,(/iip1,jjm,llm/)))
729	! call WriteField('teta',reshape(teta,(/iip1,jmp1,llm/)))
730	! call WriteField('ps',reshape(ps,(/iip1,jmp1/)))
731	! call WriteField('masse',reshape(masse,(/iip1,jmp1,llm/)))
732	endif ! of if (ok_dyn_ins)
733	#endif
734	! For some Grads outputs of fields
735	if (output_grads_dyn) then
736	#include "write_grads_dyn.h"
737	endif
738	endif ! of if (leapf.or.(.not.leapf.and.(.not.forward)))
739	ENDIF ! of IF(MOD(itau,iecri).EQ.0)
740
741	IF(itau.EQ.itaufin) THEN
742
743
744	! if (planet_type.eq."earth") then
745	! Write an Earth-format restart file
746	CALL dynredem1("restart.nc",start_time,
747	& vcov,ucov,teta,q,masse,ps)
748	! endif ! of if (planet_type.eq."earth")
749
750	CLOSE(99)
751	!!! Ehouarn: Why not stop here and now?
752	ENDIF ! of IF (itau.EQ.itaufin)
753
754	c-----------------------------------------------------------------------
755	c gestion de l'integration temporelle:
756	c ------------------------------------
757
758	IF( MOD(itau,iperiod).EQ.0 ) THEN
759	GO TO 1
760	ELSE IF ( MOD(itau-1,iperiod). EQ. 0 ) THEN
761
762	IF( forward ) THEN
763	c fin du pas forward et debut du pas backward
764
765	forward = .FALSE.
766	leapf = .FALSE.
767	GO TO 2
768
769	ELSE
770	c fin du pas backward et debut du premier pas leapfrog
771
772	leapf = .TRUE.
773	dt = 2.*dtvr
774	GO TO 2
775	END IF ! of IF (forward)
776	ELSE
777
778	c ...... pas leapfrog .....
779
780	leapf = .TRUE.
781	dt = 2.*dtvr
782	GO TO 2
783	END IF ! of IF (MOD(itau,iperiod).EQ.0)
784	! ELSEIF (MOD(itau-1,iperiod).EQ.0)
785
786	ELSE ! of IF (.not.purmats)
787
788	if (ok_iso_verif) then
789	call check_isotopes_seq(q,ip1jmp1,'leapfrog 1664')
790	endif !if (ok_iso_verif) then
791
792	c ........................................................
793	c .............. schema matsuno ...............
794	c ........................................................
795	IF( forward ) THEN
796
797	itau = itau + 1
798	c iday = day_ini+itau/day_step
799	c time = REAL(itau-(iday-day_ini)*day_step)/day_step+time_0
800	c
801	c IF(time.GT.1.) THEN
802	c time = time-1.
803	c iday = iday+1
804	c ENDIF
805
806	forward = .FALSE.
807	IF( itau. EQ. itaufinp1 ) then
808	abort_message = 'Simulation finished'
809	call abort_gcm(modname,abort_message,0)
810	ENDIF
811	GO TO 2
812
813	ELSE ! of IF(forward) i.e. backward step
814
815	if (ok_iso_verif) then
816	call check_isotopes_seq(q,ip1jmp1,'leapfrog 1698')
817	endif !if (ok_iso_verif) then
818
819	IF(MOD(itau,iperiod).EQ.0 .OR. itau.EQ.itaufin) THEN
820	IF(itau.EQ.itaufin) THEN
821	iav=1
822	ELSE
823	iav=0
824	ENDIF
825
826	! ! Ehouarn: re-compute geopotential for outputs
827	CALL geopot(ip1jmp1,teta,pk,pks,phis,phi)
828
829	IF (ok_dynzon) THEN
830	#ifdef CPP_IOIPSL
831	CALL bilan_dyn(2,dtvriperiod,dtvrday_step*periodav,
832	& ps,masse,pk,pbaru,pbarv,teta,phi,ucov,vcov,q)
833	#endif
834	ENDIF
835	IF (ok_dyn_ave) THEN
836	#ifdef CPP_IOIPSL
837	CALL writedynav(itau,vcov,
838	& ucov,teta,pk,phi,q,masse,ps,phis)
839	#endif
840	ENDIF
841
842	ENDIF ! of IF(MOD(itau,iperiod).EQ.0 .OR. itau.EQ.itaufin)
843
844	IF(MOD(itau,iecri ).EQ.0) THEN
845	c IF(MOD(itau,iecri*day_step).EQ.0) THEN
846	CALL geopot(ip1jmp1,teta,pk,pks,phis,phi)
847	unat=0.
848	do l=1,llm
849	unat(iip2:ip1jm,l)=ucov(iip2:ip1jm,l)/cu(iip2:ip1jm)
850	vnat(:,l)=vcov(:,l)/cv(:)
851	enddo
852	#ifdef CPP_IOIPSL
853	if (ok_dyn_ins) then
854	! write(lunout,*) "leapfrog: call writehist (b)",
855	! & itau,iecri
856	CALL writehist(itau,vcov,ucov,teta,phi,q,masse,ps,phis)
857	endif ! of if (ok_dyn_ins)
858	#endif
859	! For some Grads outputs
860	if (output_grads_dyn) then
861	#include "write_grads_dyn.h"
862	endif
863
864	ENDIF ! of IF(MOD(itau,iecri ).EQ.0)
865
866	IF(itau.EQ.itaufin) THEN
867	! if (planet_type.eq."earth") then
868	CALL dynredem1("restart.nc",start_time,
869	& vcov,ucov,teta,q,masse,ps)
870	! endif ! of if (planet_type.eq."earth")
871	ENDIF ! of IF(itau.EQ.itaufin)
872
873	forward = .TRUE.
874	GO TO 1
875
876	ENDIF ! of IF (forward)
877
878	END IF ! of IF(.not.purmats)
879
880	STOP
881	END

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