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leapfrog.F @ 4040

Last change on this file since 4040 was 2622, checked in by Ehouarn Millour, 8 years ago
Some code tidying: turn ener.h into ener_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 2622 2016-09-04 06:12:02Z crisi $
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 "description.h"
67	include "iniprint.h"
68	include "academic.h"
69
70	REAL,INTENT(IN) :: time_0 ! not used
71
72	c dynamical variables:
73	REAL,INTENT(INOUT) :: ucov(ip1jmp1,llm) ! zonal covariant wind
74	REAL,INTENT(INOUT) :: vcov(ip1jm,llm) ! meridional covariant wind
75	REAL,INTENT(INOUT) :: teta(ip1jmp1,llm) ! potential temperature
76	REAL,INTENT(INOUT) :: ps(ip1jmp1) ! surface pressure (Pa)
77	REAL,INTENT(INOUT) :: masse(ip1jmp1,llm) ! air mass
78	REAL,INTENT(INOUT) :: phis(ip1jmp1) ! geopotentiat at the surface
79	REAL,INTENT(INOUT) :: q(ip1jmp1,llm,nqtot) ! advected tracers
80
81	REAL p (ip1jmp1,llmp1 ) ! interlayer pressure
82	REAL pks(ip1jmp1) ! exner at the surface
83	REAL pk(ip1jmp1,llm) ! exner at mid-layer
84	REAL pkf(ip1jmp1,llm) ! filtered exner at mid-layer
85	REAL phi(ip1jmp1,llm) ! geopotential
86	REAL w(ip1jmp1,llm) ! vertical velocity
87
88	real zqmin,zqmax
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 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	logical physic
152
153	data callinigrads/.true./
154	character*10 string10
155
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=*),parameter :: modname="leapfrog"
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	if (nday>=0) then
194	itaufin = nday*day_step
195	else
196	itaufin = -nday
197	endif
198	itaufinp1 = itaufin +1
199	itau = 0
200	physic=.true.
201	if (iflag_phys==0.or.iflag_phys==2) physic=.false.
202
203	c iday = day_ini+itau/day_step
204	c time = REAL(itau-(iday-day_ini)*day_step)/day_step+time_0
205	c IF(time.GT.1.) THEN
206	c time = time-1.
207	c iday = iday+1
208	c ENDIF
209
210
211	c-----------------------------------------------------------------------
212	c On initialise la pression et la fonction d'Exner :
213	c --------------------------------------------------
214
215	dq(:,:,:)=0.
216	CALL pression ( ip1jmp1, ap, bp, ps, p )
217	if (pressure_exner) then
218	CALL exner_hyb( ip1jmp1, ps, p, pks, pk, pkf )
219	else
220	CALL exner_milieu( ip1jmp1, ps, p, pks, pk, pkf )
221	endif
222
223	c-----------------------------------------------------------------------
224	c Debut de l'integration temporelle:
225	c ----------------------------------
226
227	1 CONTINUE ! Matsuno Forward step begins here
228
229	c date: (NB: date remains unchanged for Backward step)
230	c -----
231
232	jD_cur = jD_ref + day_ini - day_ref + &
233	& (itau+1)/day_step
234	jH_cur = jH_ref + start_time + &
235	& mod(itau+1,day_step)/float(day_step)
236	jD_cur = jD_cur + int(jH_cur)
237	jH_cur = jH_cur - int(jH_cur)
238
239	if (ok_iso_verif) then
240	call check_isotopes_seq(q,ip1jmp1,'leapfrog 321')
241	endif !if (ok_iso_verif) then
242
243	#ifdef CPP_IOIPSL
244	if (ok_guide) then
245	call guide_main(itau,ucov,vcov,teta,q,masse,ps)
246	endif
247	#endif
248
249
250	c
251	c IF( MOD( itau, 10* day_step ).EQ.0 ) THEN
252	c CALL test_period ( ucov,vcov,teta,q,p,phis )
253	c PRINT *,' ---- Test_period apres continue OK ! -----', itau
254	c ENDIF
255	c
256
257	! Save fields obtained at previous time step as '...m1'
258	CALL SCOPY( ijmllm ,vcov , 1, vcovm1 , 1 )
259	CALL SCOPY( ijp1llm,ucov , 1, ucovm1 , 1 )
260	CALL SCOPY( ijp1llm,teta , 1, tetam1 , 1 )
261	CALL SCOPY( ijp1llm,masse, 1, massem1, 1 )
262	CALL SCOPY( ip1jmp1, ps , 1, psm1 , 1 )
263
264	forward = .TRUE.
265	leapf = .FALSE.
266	dt = dtvr
267
268	c ... P.Le Van .26/04/94 ....
269	! Ehouarn: finvmaold is actually not used
270	! CALL SCOPY ( ijp1llm, masse, 1, finvmaold, 1 )
271	! CALL filtreg ( finvmaold ,jjp1, llm, -2,2, .TRUE., 1 )
272
273	if (ok_iso_verif) then
274	call check_isotopes_seq(q,ip1jmp1,'leapfrog 400')
275	endif !if (ok_iso_verif) then
276
277	2 CONTINUE ! Matsuno backward or leapfrog step begins here
278
279	c-----------------------------------------------------------------------
280
281	c date: (NB: only leapfrog step requires recomputing date)
282	c -----
283
284	IF (leapf) THEN
285	jD_cur = jD_ref + day_ini - day_ref +
286	& (itau+1)/day_step
287	jH_cur = jH_ref + start_time +
288	& mod(itau+1,day_step)/float(day_step)
289	jD_cur = jD_cur + int(jH_cur)
290	jH_cur = jH_cur - int(jH_cur)
291	ENDIF
292
293
294	c gestion des appels de la physique et des dissipations:
295	c ------------------------------------------------------
296	c
297	c ... P.Le Van ( 6/02/95 ) ....
298
299	apphys = .FALSE.
300	statcl = .FALSE.
301	conser = .FALSE.
302	apdiss = .FALSE.
303
304	IF( purmats ) THEN
305	! Purely Matsuno time stepping
306	IF( MOD(itau,iconser) .EQ.0.AND. forward ) conser = .TRUE.
307	IF( MOD(itau,dissip_period ).EQ.0.AND..NOT.forward )
308	s apdiss = .TRUE.
309	IF( MOD(itau,iphysiq ).EQ.0.AND..NOT.forward
310	s .and. physic ) apphys = .TRUE.
311	ELSE
312	! Leapfrog/Matsuno time stepping
313	IF( MOD(itau ,iconser) .EQ. 0 ) conser = .TRUE.
314	IF( MOD(itau+1,dissip_period).EQ.0 .AND. .NOT. forward )
315	s apdiss = .TRUE.
316	IF( MOD(itau+1,iphysiq).EQ.0.AND.physic ) apphys=.TRUE.
317	END IF
318
319	! Ehouarn: for Shallow Water case (ie: 1 vertical layer),
320	! supress dissipation step
321	if (llm.eq.1) then
322	apdiss=.false.
323	endif
324
325
326	if (ok_iso_verif) then
327	call check_isotopes_seq(q,ip1jmp1,'leapfrog 589')
328	endif !if (ok_iso_verif) then
329
330	c-----------------------------------------------------------------------
331	c calcul des tendances dynamiques:
332	c --------------------------------
333
334	! compute geopotential phi()
335	CALL geopot ( ip1jmp1, teta , pk , pks, phis , phi )
336
337	time = jD_cur + jH_cur
338	CALL caldyn
339	$ ( itau,ucov,vcov,teta,ps,masse,pk,pkf,phis ,
340	$ phi,conser,du,dv,dteta,dp,w, pbaru,pbarv, time )
341
342
343	c-----------------------------------------------------------------------
344	c calcul des tendances advection des traceurs (dont l'humidite)
345	c -------------------------------------------------------------
346
347	if (ok_iso_verif) then
348	call check_isotopes_seq(q,ip1jmp1,
349	& 'leapfrog 686: avant caladvtrac')
350	endif !if (ok_iso_verif) then
351
352	IF( forward. OR . leapf ) THEN
353	! Ehouarn: NB: fields sent to advtrac are those at the beginning of the time step
354	CALL caladvtrac(q,pbaru,pbarv,
355	* p, masse, dq, teta,
356	. flxw, pk)
357	!write(,) 'caladvtrac 346'
358
359
360	IF (offline) THEN
361	Cmaf stokage du flux de masse pour traceurs OFF-LINE
362
363	#ifdef CPP_IOIPSL
364	CALL fluxstokenc(pbaru,pbarv,masse,teta,phi,phis,
365	. dtvr, itau)
366	#endif
367
368
369	ENDIF ! of IF (offline)
370	c
371	ENDIF ! of IF( forward. OR . leapf )
372
373
374	c-----------------------------------------------------------------------
375	c integrations dynamique et traceurs:
376	c ----------------------------------
377
378	if (ok_iso_verif) then
379	write(,) 'leapfrog 720'
380	call check_isotopes_seq(q,ip1jmp1,'leapfrog 756')
381	endif !if (ok_iso_verif) then
382
383	CALL integrd ( nqtot,vcovm1,ucovm1,tetam1,psm1,massem1 ,
384	$ dv,du,dteta,dq,dp,vcov,ucov,teta,q,ps,masse,phis )
385	! $ finvmaold )
386
387	if (ok_iso_verif) then
388	write(,) 'leapfrog 724'
389	call check_isotopes_seq(q,ip1jmp1,'leapfrog 762')
390	endif !if (ok_iso_verif) then
391
392	c .P.Le Van (26/04/94 ajout de finvpold dans l'appel d'integrd)
393	c
394	c-----------------------------------------------------------------------
395	c calcul des tendances physiques:
396	c -------------------------------
397	c ######## P.Le Van ( Modif le 6/02/95 ) ###########
398	c
399	IF( purmats ) THEN
400	IF( itau.EQ.itaufin.AND..NOT.forward ) lafin = .TRUE.
401	ELSE
402	IF( itau+1. EQ. itaufin ) lafin = .TRUE.
403	ENDIF
404	c
405	c
406	IF( apphys ) THEN
407	c
408	c ....... Ajout P.Le Van ( 17/04/96 ) ...........
409	c
410
411	CALL pression ( ip1jmp1, ap, bp, ps, p )
412	if (pressure_exner) then
413	CALL exner_hyb( ip1jmp1, ps, p,pks, pk, pkf )
414	else
415	CALL exner_milieu( ip1jmp1, ps, p, pks, pk, pkf )
416	endif
417
418	! Appel a geopot ajoute le 2014/05/08 pour garantir la convergence numerique
419	! avec dyn3dmem
420	CALL geopot ( ip1jmp1, teta , pk , pks, phis , phi )
421
422	! rdaym_ini = itau * dtvr / daysec
423	! rdayvrai = rdaym_ini + day_ini
424	! jD_cur = jD_ref + day_ini - day_ref
425	! $ + int (itau * dtvr / daysec)
426	! jH_cur = jH_ref + &
427	! & (itau * dtvr / daysec - int(itau * dtvr / daysec))
428	jD_cur = jD_ref + day_ini - day_ref + &
429	& (itau+1)/day_step
430
431	IF (planet_type .eq."generic") THEN
432	! AS: we make jD_cur to be pday
433	jD_cur = int(day_ini + itau/day_step)
434	ENDIF
435
436	jH_cur = jH_ref + start_time + &
437	& mod(itau+1,day_step)/float(day_step)
438	jD_cur = jD_cur + int(jH_cur)
439	jH_cur = jH_cur - int(jH_cur)
440	! write(lunout,*)'itau, jD_cur = ', itau, jD_cur, jH_cur
441	! call ju2ymds(jD_cur+jH_cur, an, mois, jour, secondes)
442	! write(lunout,*)'current date = ',an, mois, jour, secondes
443
444	c rajout debug
445	c lafin = .true.
446
447
448	c Inbterface avec les routines de phylmd (phymars ... )
449	c -----------------------------------------------------
450
451	c+jld
452
453	c Diagnostique de conservation de l'énergie : initialisation
454	IF (ip_ebil_dyn.ge.1 ) THEN
455	ztit='bil dyn'
456	! Ehouarn: be careful, diagedyn is Earth-specific!
457	IF (planet_type.eq."earth") THEN
458	CALL diagedyn(ztit,2,1,1,dtphys
459	& , ucov , vcov , ps, p ,pk , teta , q(:,:,1), q(:,:,2))
460	ENDIF
461	ENDIF ! of IF (ip_ebil_dyn.ge.1 )
462	c-jld
463	#ifdef CPP_IOIPSL
464	cIM decommenter les 6 lignes suivantes pour sortir quelques parametres dynamiques de LMDZ
465	cIM uncomment next 6 lines to get some parameters for LMDZ dynamics
466	c IF (first) THEN
467	c first=.false.
468	c#include "ini_paramLMDZ_dyn.h"
469	c ENDIF
470	c
471	c#include "write_paramLMDZ_dyn.h"
472	c
473	#endif
474	! #endif of #ifdef CPP_IOIPSL
475	#ifdef CPP_PHYS
476	CALL calfis( lafin , jD_cur, jH_cur,
477	$ ucov,vcov,teta,q,masse,ps,p,pk,phis,phi ,
478	$ du,dv,dteta,dq,
479	$ flxw,dufi,dvfi,dtetafi,dqfi,dpfi )
480	#endif
481	c ajout des tendances physiques:
482	c ------------------------------
483	CALL addfi( dtphys, leapf, forward ,
484	$ ucov, vcov, teta , q ,ps ,
485	$ dufi, dvfi, dtetafi , dqfi ,dpfi )
486	! since addfi updates ps(), also update p(), masse() and pk()
487	CALL pression (ip1jmp1,ap,bp,ps,p)
488	CALL massdair(p,masse)
489	if (pressure_exner) then
490	CALL exner_hyb(ip1jmp1,ps,p,pks,pk,pkf)
491	else
492	CALL exner_milieu(ip1jmp1,ps,p,pks,pk,pkf)
493	endif
494
495	IF (ok_strato) THEN
496	CALL top_bound( vcov,ucov,teta,masse,dtphys)
497	ENDIF
498
499	c
500	c Diagnostique de conservation de l'énergie : difference
501	IF (ip_ebil_dyn.ge.1 ) THEN
502	ztit='bil phys'
503	IF (planet_type.eq."earth") THEN
504	CALL diagedyn(ztit,2,1,1,dtphys
505	& , ucov , vcov , ps, p ,pk , teta , q(:,:,1), q(:,:,2))
506	ENDIF
507	ENDIF ! of IF (ip_ebil_dyn.ge.1 )
508
509	ENDIF ! of IF( apphys )
510
511	IF(iflag_phys.EQ.2) THEN ! "Newtonian" case
512	! Academic case : Simple friction and Newtonan relaxation
513	! -------------------------------------------------------
514	DO l=1,llm
515	DO ij=1,ip1jmp1
516	teta(ij,l)=teta(ij,l)-dtvr*
517	& (teta(ij,l)-tetarappel(ij,l))(knewt_g+knewt_t(l)clat4(ij))
518	ENDDO
519	ENDDO ! of DO l=1,llm
520
521	if (planet_type.eq."giant") then
522	! add an intrinsic heat flux at the base of the atmosphere
523	teta(:,1)=teta(:,1)+dtvraire(:)ihf/cpp/masse(:,1)
524	endif
525
526	call friction(ucov,vcov,dtvr)
527
528	! Sponge layer (if any)
529	IF (ok_strato) THEN
530	! dufi(:,:)=0.
531	! dvfi(:,:)=0.
532	! dtetafi(:,:)=0.
533	! dqfi(:,:,:)=0.
534	! dpfi(:)=0.
535	! CALL top_bound(vcov,ucov,teta,masse,dufi,dvfi,dtetafi)
536	CALL top_bound( vcov,ucov,teta,masse,dtvr)
537	! CALL addfi( dtvr, leapf, forward ,
538	! $ ucov, vcov, teta , q ,ps ,
539	! $ dufi, dvfi, dtetafi , dqfi ,dpfi )
540	ENDIF ! of IF (ok_strato)
541	ENDIF ! of IF (iflag_phys.EQ.2)
542
543
544	c-jld
545
546	CALL pression ( ip1jmp1, ap, bp, ps, p )
547	if (pressure_exner) then
548	CALL exner_hyb( ip1jmp1, ps, p, pks, pk, pkf )
549	else
550	CALL exner_milieu( ip1jmp1, ps, p, pks, pk, pkf )
551	endif
552	CALL massdair(p,masse)
553
554	if (ok_iso_verif) then
555	call check_isotopes_seq(q,ip1jmp1,'leapfrog 1196')
556	endif !if (ok_iso_verif) then
557
558	c-----------------------------------------------------------------------
559	c dissipation horizontale et verticale des petites echelles:
560	c ----------------------------------------------------------
561
562	IF(apdiss) THEN
563
564
565	c calcul de l'energie cinetique avant dissipation
566	call covcont(llm,ucov,vcov,ucont,vcont)
567	call enercin(vcov,ucov,vcont,ucont,ecin0)
568
569	c dissipation
570	CALL dissip(vcov,ucov,teta,p,dvdis,dudis,dtetadis)
571	ucov=ucov+dudis
572	vcov=vcov+dvdis
573	c teta=teta+dtetadis
574
575
576	c------------------------------------------------------------------------
577	if (dissip_conservative) then
578	C On rajoute la tendance due a la transform. Ec -> E therm. cree
579	C lors de la dissipation
580	call covcont(llm,ucov,vcov,ucont,vcont)
581	call enercin(vcov,ucov,vcont,ucont,ecin)
582	dtetaecdt= (ecin0-ecin)/ pk
583	c teta=teta+dtetaecdt
584	dtetadis=dtetadis+dtetaecdt
585	endif
586	teta=teta+dtetadis
587	c------------------------------------------------------------------------
588
589
590	c ....... P. Le Van ( ajout le 17/04/96 ) ...........
591	c ... Calcul de la valeur moyenne, unique de h aux poles .....
592	c
593
594	DO l = 1, llm
595	DO ij = 1,iim
596	tppn(ij) = aire( ij ) * teta( ij ,l)
597	tpps(ij) = aire(ij+ip1jm) * teta(ij+ip1jm,l)
598	ENDDO
599	tpn = SSUM(iim,tppn,1)/apoln
600	tps = SSUM(iim,tpps,1)/apols
601
602	DO ij = 1, iip1
603	teta( ij ,l) = tpn
604	teta(ij+ip1jm,l) = tps
605	ENDDO
606	ENDDO
607
608	if (1 == 0) then
609	!!! Ehouarn: lines here 1) kill 1+1=2 in the dynamics
610	!!! 2) should probably not be here anyway
611	!!! but are kept for those who would want to revert to previous behaviour
612	DO ij = 1,iim
613	tppn(ij) = aire( ij ) * ps ( ij )
614	tpps(ij) = aire(ij+ip1jm) * ps (ij+ip1jm)
615	ENDDO
616	tpn = SSUM(iim,tppn,1)/apoln
617	tps = SSUM(iim,tpps,1)/apols
618
619	DO ij = 1, iip1
620	ps( ij ) = tpn
621	ps(ij+ip1jm) = tps
622	ENDDO
623	endif ! of if (1 == 0)
624
625	END IF ! of IF(apdiss)
626
627	c ajout debug
628	c IF( lafin ) then
629	c abort_message = 'Simulation finished'
630	c call abort_gcm(modname,abort_message,0)
631	c ENDIF
632
633	c ********************************************************************
634	c ********************************************************************
635	c .... fin de l'integration dynamique et physique pour le pas itau ..
636	c ********************************************************************
637	c ********************************************************************
638
639	c preparation du pas d'integration suivant ......
640
641	if (ok_iso_verif) then
642	call check_isotopes_seq(q,ip1jmp1,'leapfrog 1509')
643	endif !if (ok_iso_verif) then
644
645	IF ( .NOT.purmats ) THEN
646	c ........................................................
647	c .............. schema matsuno + leapfrog ..............
648	c ........................................................
649
650	IF(forward. OR. leapf) THEN
651	itau= itau + 1
652	c iday= day_ini+itau/day_step
653	c time= REAL(itau-(iday-day_ini)*day_step)/day_step+time_0
654	c IF(time.GT.1.) THEN
655	c time = time-1.
656	c iday = iday+1
657	c ENDIF
658	ENDIF
659
660
661	IF( itau. EQ. itaufinp1 ) then
662	if (flag_verif) then
663	write(79,*) 'ucov',ucov
664	write(80,*) 'vcov',vcov
665	write(81,*) 'teta',teta
666	write(82,*) 'ps',ps
667	write(83,*) 'q',q
668	WRITE(85,*) 'q1 = ',q(:,:,1)
669	WRITE(86,*) 'q3 = ',q(:,:,3)
670	endif
671
672	abort_message = 'Simulation finished'
673
674	call abort_gcm(modname,abort_message,0)
675	ENDIF
676	c-----------------------------------------------------------------------
677	c ecriture du fichier histoire moyenne:
678	c -------------------------------------
679
680	IF(MOD(itau,iperiod).EQ.0 .OR. itau.EQ.itaufin) THEN
681	IF(itau.EQ.itaufin) THEN
682	iav=1
683	ELSE
684	iav=0
685	ENDIF
686
687	! ! Ehouarn: re-compute geopotential for outputs
688	CALL geopot(ip1jmp1,teta,pk,pks,phis,phi)
689
690	IF (ok_dynzon) THEN
691	#ifdef CPP_IOIPSL
692	CALL bilan_dyn(2,dtvriperiod,dtvrday_step*periodav,
693	& ps,masse,pk,pbaru,pbarv,teta,phi,ucov,vcov,q)
694	#endif
695	END IF
696	IF (ok_dyn_ave) THEN
697	#ifdef CPP_IOIPSL
698	CALL writedynav(itau,vcov,
699	& ucov,teta,pk,phi,q,masse,ps,phis)
700	#endif
701	ENDIF
702
703	ENDIF ! of IF((MOD(itau,iperiod).EQ.0).OR.(itau.EQ.itaufin))
704
705	if (ok_iso_verif) then
706	call check_isotopes_seq(q,ip1jmp1,'leapfrog 1584')
707	endif !if (ok_iso_verif) then
708
709	c-----------------------------------------------------------------------
710	c ecriture de la bande histoire:
711	c ------------------------------
712
713	IF( MOD(itau,iecri).EQ.0) THEN
714	! Ehouarn: output only during LF or Backward Matsuno
715	if (leapf.or.(.not.leapf.and.(.not.forward))) then
716	CALL geopot(ip1jmp1,teta,pk,pks,phis,phi)
717	unat=0.
718	do l=1,llm
719	unat(iip2:ip1jm,l)=ucov(iip2:ip1jm,l)/cu(iip2:ip1jm)
720	vnat(:,l)=vcov(:,l)/cv(:)
721	enddo
722	#ifdef CPP_IOIPSL
723	if (ok_dyn_ins) then
724	! write(lunout,*) "leapfrog: call writehist, itau=",itau
725	CALL writehist(itau,vcov,ucov,teta,phi,q,masse,ps,phis)
726	! call WriteField('ucov',reshape(ucov,(/iip1,jmp1,llm/)))
727	! call WriteField('vcov',reshape(vcov,(/iip1,jjm,llm/)))
728	! call WriteField('teta',reshape(teta,(/iip1,jmp1,llm/)))
729	! call WriteField('ps',reshape(ps,(/iip1,jmp1/)))
730	! call WriteField('masse',reshape(masse,(/iip1,jmp1,llm/)))
731	endif ! of if (ok_dyn_ins)
732	#endif
733	! For some Grads outputs of fields
734	if (output_grads_dyn) then
735	#include "write_grads_dyn.h"
736	endif
737	endif ! of if (leapf.or.(.not.leapf.and.(.not.forward)))
738	ENDIF ! of IF(MOD(itau,iecri).EQ.0)
739
740	IF(itau.EQ.itaufin) THEN
741
742
743	! if (planet_type.eq."earth") then
744	! Write an Earth-format restart file
745	CALL dynredem1("restart.nc",start_time,
746	& vcov,ucov,teta,q,masse,ps)
747	! endif ! of if (planet_type.eq."earth")
748
749	CLOSE(99)
750	!!! Ehouarn: Why not stop here and now?
751	ENDIF ! of IF (itau.EQ.itaufin)
752
753	c-----------------------------------------------------------------------
754	c gestion de l'integration temporelle:
755	c ------------------------------------
756
757	IF( MOD(itau,iperiod).EQ.0 ) THEN
758	GO TO 1
759	ELSE IF ( MOD(itau-1,iperiod). EQ. 0 ) THEN
760
761	IF( forward ) THEN
762	c fin du pas forward et debut du pas backward
763
764	forward = .FALSE.
765	leapf = .FALSE.
766	GO TO 2
767
768	ELSE
769	c fin du pas backward et debut du premier pas leapfrog
770
771	leapf = .TRUE.
772	dt = 2.*dtvr
773	GO TO 2
774	END IF ! of IF (forward)
775	ELSE
776
777	c ...... pas leapfrog .....
778
779	leapf = .TRUE.
780	dt = 2.*dtvr
781	GO TO 2
782	END IF ! of IF (MOD(itau,iperiod).EQ.0)
783	! ELSEIF (MOD(itau-1,iperiod).EQ.0)
784
785	ELSE ! of IF (.not.purmats)
786
787	if (ok_iso_verif) then
788	call check_isotopes_seq(q,ip1jmp1,'leapfrog 1664')
789	endif !if (ok_iso_verif) then
790
791	c ........................................................
792	c .............. schema matsuno ...............
793	c ........................................................
794	IF( forward ) THEN
795
796	itau = itau + 1
797	c iday = day_ini+itau/day_step
798	c time = REAL(itau-(iday-day_ini)*day_step)/day_step+time_0
799	c
800	c IF(time.GT.1.) THEN
801	c time = time-1.
802	c iday = iday+1
803	c ENDIF
804
805	forward = .FALSE.
806	IF( itau. EQ. itaufinp1 ) then
807	abort_message = 'Simulation finished'
808	call abort_gcm(modname,abort_message,0)
809	ENDIF
810	GO TO 2
811
812	ELSE ! of IF(forward) i.e. backward step
813
814	if (ok_iso_verif) then
815	call check_isotopes_seq(q,ip1jmp1,'leapfrog 1698')
816	endif !if (ok_iso_verif) then
817
818	IF(MOD(itau,iperiod).EQ.0 .OR. itau.EQ.itaufin) THEN
819	IF(itau.EQ.itaufin) THEN
820	iav=1
821	ELSE
822	iav=0
823	ENDIF
824
825	! ! Ehouarn: re-compute geopotential for outputs
826	CALL geopot(ip1jmp1,teta,pk,pks,phis,phi)
827
828	IF (ok_dynzon) THEN
829	#ifdef CPP_IOIPSL
830	CALL bilan_dyn(2,dtvriperiod,dtvrday_step*periodav,
831	& ps,masse,pk,pbaru,pbarv,teta,phi,ucov,vcov,q)
832	#endif
833	ENDIF
834	IF (ok_dyn_ave) THEN
835	#ifdef CPP_IOIPSL
836	CALL writedynav(itau,vcov,
837	& ucov,teta,pk,phi,q,masse,ps,phis)
838	#endif
839	ENDIF
840
841	ENDIF ! of IF(MOD(itau,iperiod).EQ.0 .OR. itau.EQ.itaufin)
842
843	IF(MOD(itau,iecri ).EQ.0) THEN
844	c IF(MOD(itau,iecri*day_step).EQ.0) THEN
845	CALL geopot(ip1jmp1,teta,pk,pks,phis,phi)
846	unat=0.
847	do l=1,llm
848	unat(iip2:ip1jm,l)=ucov(iip2:ip1jm,l)/cu(iip2:ip1jm)
849	vnat(:,l)=vcov(:,l)/cv(:)
850	enddo
851	#ifdef CPP_IOIPSL
852	if (ok_dyn_ins) then
853	! write(lunout,*) "leapfrog: call writehist (b)",
854	! & itau,iecri
855	CALL writehist(itau,vcov,ucov,teta,phi,q,masse,ps,phis)
856	endif ! of if (ok_dyn_ins)
857	#endif
858	! For some Grads outputs
859	if (output_grads_dyn) then
860	#include "write_grads_dyn.h"
861	endif
862
863	ENDIF ! of IF(MOD(itau,iecri ).EQ.0)
864
865	IF(itau.EQ.itaufin) THEN
866	! if (planet_type.eq."earth") then
867	CALL dynredem1("restart.nc",start_time,
868	& vcov,ucov,teta,q,masse,ps)
869	! endif ! of if (planet_type.eq."earth")
870	ENDIF ! of IF(itau.EQ.itaufin)
871
872	forward = .TRUE.
873	GO TO 1
874
875	ENDIF ! of IF (forward)
876
877	END IF ! of IF(.not.purmats)
878
879	STOP
880	END

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