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leapfrog.F @ 4143

Last change on this file since 4143 was 4143, checked in by dcugnet, 2 years ago
Some variables are renamed or replaced by direct equivalents: iso_indnum -> tracers(:)%iso_iName niso_possibles -> niso iqiso -> iqIsoPha ; index_trac -> itZonIso ok_iso_verif -> isoCheck ntraceurs_zone -> nzone ; ntraciso -> ntiso qperemin -> min_qparent ; masseqmin -> min_qmass ; ratiomin -> min_ratio Some renamed variables are only aliased with the older name (using USE <module>, ONLY: <oldName> => <newName>) in routines where they are repeated many times. Few hard-coded indexes are now computed (examples: ilic, iso, ivap, irneb, iq_vap, iq_liq, iso_H2O, iso_HDO, iso_HTO, iso_O17, iso_O18). The IF(isoCheck) test is now embedded in the check_isotopes_seq and check_isotopes_loc routines (lighter calling).
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: 28.2 KB

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1	!
2	! $Id: leapfrog.F 4143 2022-05-09 10:35:40Z dcugnet $
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, isoCheck
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	USE strings_mod, ONLY: msg
29
30	IMPLICIT NONE
31
32	c ...... Version du 10/01/98 ..........
33
34	c avec coordonnees verticales hybrides
35	c avec nouveaux operat. dissipation * ( gradiv2,divgrad2,nxgraro2 )
36
37	c=======================================================================
38	c
39	c Auteur: P. Le Van /L. Fairhead/F.Hourdin
40	c -------
41	c
42	c Objet:
43	c ------
44	c
45	c GCM LMD nouvelle grille
46	c
47	c=======================================================================
48	c
49	c ... Dans inigeom , nouveaux calculs pour les elongations cu , cv
50	c et possibilite d'appeler une fonction f(y) a derivee tangente
51	c hyperbolique a la place de la fonction a derivee sinusoidale.
52
53	c ... Possibilite de choisir le shema pour l'advection de
54	c q , en modifiant iadv dans traceur.def (10/02) .
55	c
56	c Pour Van-Leer + Vapeur d'eau saturee, iadv(1)=4. (F.Codron,10/99)
57	c Pour Van-Leer iadv=10
58	c
59	c-----------------------------------------------------------------------
60	c Declarations:
61	c -------------
62
63	include "dimensions.h"
64	include "paramet.h"
65	include "comdissnew.h"
66	include "comgeom.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	call check_isotopes_seq(q,ip1jmp1,'leapfrog 321')
241
242	#ifdef CPP_IOIPSL
243	if (ok_guide) then
244	call guide_main(itau,ucov,vcov,teta,q,masse,ps)
245	endif
246	#endif
247
248
249	c
250	c IF( MOD( itau, 10* day_step ).EQ.0 ) THEN
251	c CALL test_period ( ucov,vcov,teta,q,p,phis )
252	c PRINT *,' ---- Test_period apres continue OK ! -----', itau
253	c ENDIF
254	c
255
256	! Save fields obtained at previous time step as '...m1'
257	CALL SCOPY( ijmllm ,vcov , 1, vcovm1 , 1 )
258	CALL SCOPY( ijp1llm,ucov , 1, ucovm1 , 1 )
259	CALL SCOPY( ijp1llm,teta , 1, tetam1 , 1 )
260	CALL SCOPY( ijp1llm,masse, 1, massem1, 1 )
261	CALL SCOPY( ip1jmp1, ps , 1, psm1 , 1 )
262
263	forward = .TRUE.
264	leapf = .FALSE.
265	dt = dtvr
266
267	c ... P.Le Van .26/04/94 ....
268	! Ehouarn: finvmaold is actually not used
269	! CALL SCOPY ( ijp1llm, masse, 1, finvmaold, 1 )
270	! CALL filtreg ( finvmaold ,jjp1, llm, -2,2, .TRUE., 1 )
271
272	call check_isotopes_seq(q,ip1jmp1,'leapfrog 400')
273
274	2 CONTINUE ! Matsuno backward or leapfrog step begins here
275
276	c-----------------------------------------------------------------------
277
278	c date: (NB: only leapfrog step requires recomputing date)
279	c -----
280
281	IF (leapf) THEN
282	jD_cur = jD_ref + day_ini - day_ref +
283	& (itau+1)/day_step
284	jH_cur = jH_ref + start_time +
285	& mod(itau+1,day_step)/float(day_step)
286	jD_cur = jD_cur + int(jH_cur)
287	jH_cur = jH_cur - int(jH_cur)
288	ENDIF
289
290
291	c gestion des appels de la physique et des dissipations:
292	c ------------------------------------------------------
293	c
294	c ... P.Le Van ( 6/02/95 ) ....
295
296	apphys = .FALSE.
297	statcl = .FALSE.
298	conser = .FALSE.
299	apdiss = .FALSE.
300
301	IF( purmats ) THEN
302	! Purely Matsuno time stepping
303	IF( MOD(itau,iconser) .EQ.0.AND. forward ) conser = .TRUE.
304	IF( MOD(itau,dissip_period ).EQ.0.AND..NOT.forward )
305	s apdiss = .TRUE.
306	IF( MOD(itau,iphysiq ).EQ.0.AND..NOT.forward
307	s .and. physic ) apphys = .TRUE.
308	ELSE
309	! Leapfrog/Matsuno time stepping
310	IF( MOD(itau ,iconser) .EQ. 0 ) conser = .TRUE.
311	IF( MOD(itau+1,dissip_period).EQ.0 .AND. .NOT. forward )
312	s apdiss = .TRUE.
313	IF( MOD(itau+1,iphysiq).EQ.0.AND.physic ) apphys=.TRUE.
314	END IF
315
316	! Ehouarn: for Shallow Water case (ie: 1 vertical layer),
317	! supress dissipation step
318	if (llm.eq.1) then
319	apdiss=.false.
320	endif
321
322
323	call check_isotopes_seq(q,ip1jmp1,'leapfrog 589')
324
325	c-----------------------------------------------------------------------
326	c calcul des tendances dynamiques:
327	c --------------------------------
328
329	! compute geopotential phi()
330	CALL geopot ( ip1jmp1, teta , pk , pks, phis , phi )
331
332	time = jD_cur + jH_cur
333	CALL caldyn
334	$ ( itau,ucov,vcov,teta,ps,masse,pk,pkf,phis ,
335	$ phi,conser,du,dv,dteta,dp,w, pbaru,pbarv, time )
336
337
338	c-----------------------------------------------------------------------
339	c calcul des tendances advection des traceurs (dont l'humidite)
340	c -------------------------------------------------------------
341
342	call check_isotopes_seq(q,ip1jmp1,
343	& 'leapfrog 686: avant caladvtrac')
344
345	IF( forward. OR . leapf ) THEN
346	! Ehouarn: NB: fields sent to advtrac are those at the beginning of the time step
347	CALL caladvtrac(q,pbaru,pbarv,
348	* p, masse, dq, teta,
349	. flxw, pk)
350	!write(,) 'caladvtrac 346'
351
352
353	IF (offline) THEN
354	Cmaf stokage du flux de masse pour traceurs OFF-LINE
355
356	#ifdef CPP_IOIPSL
357	CALL fluxstokenc(pbaru,pbarv,masse,teta,phi,phis,
358	. dtvr, itau)
359	#endif
360
361
362	ENDIF ! of IF (offline)
363	c
364	ENDIF ! of IF( forward. OR . leapf )
365
366
367	c-----------------------------------------------------------------------
368	c integrations dynamique et traceurs:
369	c ----------------------------------
370
371	CALL msg('720', modname, isoCheck)
372	call check_isotopes_seq(q,ip1jmp1,'leapfrog 756')
373
374	CALL integrd ( nqtot,vcovm1,ucovm1,tetam1,psm1,massem1 ,
375	$ dv,du,dteta,dq,dp,vcov,ucov,teta,q,ps,masse,phis )
376	! $ finvmaold )
377
378	CALL msg('724', modname, isoCheck)
379	call check_isotopes_seq(q,ip1jmp1,'leapfrog 762')
380
381	c .P.Le Van (26/04/94 ajout de finvpold dans l'appel d'integrd)
382	c
383	c-----------------------------------------------------------------------
384	c calcul des tendances physiques:
385	c -------------------------------
386	c ######## P.Le Van ( Modif le 6/02/95 ) ###########
387	c
388	IF( purmats ) THEN
389	IF( itau.EQ.itaufin.AND..NOT.forward ) lafin = .TRUE.
390	ELSE
391	IF( itau+1. EQ. itaufin ) lafin = .TRUE.
392	ENDIF
393	c
394	c
395	IF( apphys ) THEN
396	c
397	c ....... Ajout P.Le Van ( 17/04/96 ) ...........
398	c
399
400	CALL pression ( ip1jmp1, ap, bp, ps, p )
401	if (pressure_exner) then
402	CALL exner_hyb( ip1jmp1, ps, p,pks, pk, pkf )
403	else
404	CALL exner_milieu( ip1jmp1, ps, p, pks, pk, pkf )
405	endif
406
407	! Appel a geopot ajoute le 2014/05/08 pour garantir la convergence numerique
408	! avec dyn3dmem
409	CALL geopot ( ip1jmp1, teta , pk , pks, phis , phi )
410
411	! rdaym_ini = itau * dtvr / daysec
412	! rdayvrai = rdaym_ini + day_ini
413	! jD_cur = jD_ref + day_ini - day_ref
414	! $ + int (itau * dtvr / daysec)
415	! jH_cur = jH_ref + &
416	! & (itau * dtvr / daysec - int(itau * dtvr / daysec))
417	jD_cur = jD_ref + day_ini - day_ref + &
418	& (itau+1)/day_step
419
420	IF (planet_type .eq."generic") THEN
421	! AS: we make jD_cur to be pday
422	jD_cur = int(day_ini + itau/day_step)
423	ENDIF
424
425	jH_cur = jH_ref + start_time + &
426	& mod(itau+1,day_step)/float(day_step)
427	jD_cur = jD_cur + int(jH_cur)
428	jH_cur = jH_cur - int(jH_cur)
429	! write(lunout,*)'itau, jD_cur = ', itau, jD_cur, jH_cur
430	! call ju2ymds(jD_cur+jH_cur, an, mois, jour, secondes)
431	! write(lunout,*)'current date = ',an, mois, jour, secondes
432
433	c rajout debug
434	c lafin = .true.
435
436
437	c Inbterface avec les routines de phylmd (phymars ... )
438	c -----------------------------------------------------
439
440	c+jld
441
442	c Diagnostique de conservation de l'energie : initialisation
443	IF (ip_ebil_dyn.ge.1 ) THEN
444	ztit='bil dyn'
445	! Ehouarn: be careful, diagedyn is Earth-specific!
446	IF (planet_type.eq."earth") THEN
447	CALL diagedyn(ztit,2,1,1,dtphys
448	& , ucov , vcov , ps, p ,pk , teta , q(:,:,1), q(:,:,2))
449	ENDIF
450	ENDIF ! of IF (ip_ebil_dyn.ge.1 )
451	c-jld
452	#ifdef CPP_IOIPSL
453	cIM decommenter les 6 lignes suivantes pour sortir quelques parametres dynamiques de LMDZ
454	cIM uncomment next 6 lines to get some parameters for LMDZ dynamics
455	c IF (first) THEN
456	c first=.false.
457	c#include "ini_paramLMDZ_dyn.h"
458	c ENDIF
459	c
460	c#include "write_paramLMDZ_dyn.h"
461	c
462	#endif
463	! #endif of #ifdef CPP_IOIPSL
464	#ifdef CPP_PHYS
465	CALL calfis( lafin , jD_cur, jH_cur,
466	$ ucov,vcov,teta,q,masse,ps,p,pk,phis,phi ,
467	$ du,dv,dteta,dq,
468	$ flxw,dufi,dvfi,dtetafi,dqfi,dpfi )
469	#endif
470	c ajout des tendances physiques:
471	c ------------------------------
472	CALL addfi( dtphys, leapf, forward ,
473	$ ucov, vcov, teta , q ,ps ,
474	$ dufi, dvfi, dtetafi , dqfi ,dpfi )
475	! since addfi updates ps(), also update p(), masse() and pk()
476	CALL pression (ip1jmp1,ap,bp,ps,p)
477	CALL massdair(p,masse)
478	if (pressure_exner) then
479	CALL exner_hyb(ip1jmp1,ps,p,pks,pk,pkf)
480	else
481	CALL exner_milieu(ip1jmp1,ps,p,pks,pk,pkf)
482	endif
483
484	IF (ok_strato) THEN
485	CALL top_bound( vcov,ucov,teta,masse,dtphys)
486	ENDIF
487
488	c
489	c Diagnostique de conservation de l'energie : difference
490	IF (ip_ebil_dyn.ge.1 ) THEN
491	ztit='bil phys'
492	IF (planet_type.eq."earth") THEN
493	CALL diagedyn(ztit,2,1,1,dtphys
494	& , ucov , vcov , ps, p ,pk , teta , q(:,:,1), q(:,:,2))
495	ENDIF
496	ENDIF ! of IF (ip_ebil_dyn.ge.1 )
497
498	ENDIF ! of IF( apphys )
499
500	IF(iflag_phys.EQ.2) THEN ! "Newtonian" case
501	! Academic case : Simple friction and Newtonan relaxation
502	! -------------------------------------------------------
503	DO l=1,llm
504	DO ij=1,ip1jmp1
505	teta(ij,l)=teta(ij,l)-dtvr*
506	& (teta(ij,l)-tetarappel(ij,l))(knewt_g+knewt_t(l)clat4(ij))
507	ENDDO
508	ENDDO ! of DO l=1,llm
509
510	if (planet_type.eq."giant") then
511	! add an intrinsic heat flux at the base of the atmosphere
512	teta(:,1)=teta(:,1)+dtvraire(:)ihf/cpp/masse(:,1)
513	endif
514
515	call friction(ucov,vcov,dtvr)
516
517	! Sponge layer (if any)
518	IF (ok_strato) THEN
519	! dufi(:,:)=0.
520	! dvfi(:,:)=0.
521	! dtetafi(:,:)=0.
522	! dqfi(:,:,:)=0.
523	! dpfi(:)=0.
524	! CALL top_bound(vcov,ucov,teta,masse,dufi,dvfi,dtetafi)
525	CALL top_bound( vcov,ucov,teta,masse,dtvr)
526	! CALL addfi( dtvr, leapf, forward ,
527	! $ ucov, vcov, teta , q ,ps ,
528	! $ dufi, dvfi, dtetafi , dqfi ,dpfi )
529	ENDIF ! of IF (ok_strato)
530	ENDIF ! of IF (iflag_phys.EQ.2)
531
532
533	c-jld
534
535	CALL pression ( ip1jmp1, ap, bp, ps, p )
536	if (pressure_exner) then
537	CALL exner_hyb( ip1jmp1, ps, p, pks, pk, pkf )
538	else
539	CALL exner_milieu( ip1jmp1, ps, p, pks, pk, pkf )
540	endif
541	CALL massdair(p,masse)
542
543	call check_isotopes_seq(q,ip1jmp1,'leapfrog 1196')
544
545	c-----------------------------------------------------------------------
546	c dissipation horizontale et verticale des petites echelles:
547	c ----------------------------------------------------------
548
549	IF(apdiss) THEN
550
551
552	c calcul de l'energie cinetique avant dissipation
553	call covcont(llm,ucov,vcov,ucont,vcont)
554	call enercin(vcov,ucov,vcont,ucont,ecin0)
555
556	c dissipation
557	CALL dissip(vcov,ucov,teta,p,dvdis,dudis,dtetadis)
558	ucov=ucov+dudis
559	vcov=vcov+dvdis
560	c teta=teta+dtetadis
561
562
563	c------------------------------------------------------------------------
564	if (dissip_conservative) then
565	C On rajoute la tendance due a la transform. Ec -> E therm. cree
566	C lors de la dissipation
567	call covcont(llm,ucov,vcov,ucont,vcont)
568	call enercin(vcov,ucov,vcont,ucont,ecin)
569	dtetaecdt= (ecin0-ecin)/ pk
570	c teta=teta+dtetaecdt
571	dtetadis=dtetadis+dtetaecdt
572	endif
573	teta=teta+dtetadis
574	c------------------------------------------------------------------------
575
576
577	c ....... P. Le Van ( ajout le 17/04/96 ) ...........
578	c ... Calcul de la valeur moyenne, unique de h aux poles .....
579	c
580
581	DO l = 1, llm
582	DO ij = 1,iim
583	tppn(ij) = aire( ij ) * teta( ij ,l)
584	tpps(ij) = aire(ij+ip1jm) * teta(ij+ip1jm,l)
585	ENDDO
586	tpn = SSUM(iim,tppn,1)/apoln
587	tps = SSUM(iim,tpps,1)/apols
588
589	DO ij = 1, iip1
590	teta( ij ,l) = tpn
591	teta(ij+ip1jm,l) = tps
592	ENDDO
593	ENDDO
594
595	if (1 == 0) then
596	!!! Ehouarn: lines here 1) kill 1+1=2 in the dynamics
597	!!! 2) should probably not be here anyway
598	!!! but are kept for those who would want to revert to previous behaviour
599	DO ij = 1,iim
600	tppn(ij) = aire( ij ) * ps ( ij )
601	tpps(ij) = aire(ij+ip1jm) * ps (ij+ip1jm)
602	ENDDO
603	tpn = SSUM(iim,tppn,1)/apoln
604	tps = SSUM(iim,tpps,1)/apols
605
606	DO ij = 1, iip1
607	ps( ij ) = tpn
608	ps(ij+ip1jm) = tps
609	ENDDO
610	endif ! of if (1 == 0)
611
612	END IF ! of IF(apdiss)
613
614	c ajout debug
615	c IF( lafin ) then
616	c abort_message = 'Simulation finished'
617	c call abort_gcm(modname,abort_message,0)
618	c ENDIF
619
620	c ********************************************************************
621	c ********************************************************************
622	c .... fin de l'integration dynamique et physique pour le pas itau ..
623	c ********************************************************************
624	c ********************************************************************
625
626	c preparation du pas d'integration suivant ......
627
628	call check_isotopes_seq(q,ip1jmp1,'leapfrog 1509')
629
630	IF ( .NOT.purmats ) THEN
631	c ........................................................
632	c .............. schema matsuno + leapfrog ..............
633	c ........................................................
634
635	IF(forward. OR. leapf) THEN
636	itau= itau + 1
637	c iday= day_ini+itau/day_step
638	c time= REAL(itau-(iday-day_ini)*day_step)/day_step+time_0
639	c IF(time.GT.1.) THEN
640	c time = time-1.
641	c iday = iday+1
642	c ENDIF
643	ENDIF
644
645
646	IF( itau. EQ. itaufinp1 ) then
647	if (flag_verif) then
648	write(79,*) 'ucov',ucov
649	write(80,*) 'vcov',vcov
650	write(81,*) 'teta',teta
651	write(82,*) 'ps',ps
652	write(83,*) 'q',q
653	WRITE(85,*) 'q1 = ',q(:,:,1)
654	WRITE(86,*) 'q3 = ',q(:,:,3)
655	endif
656
657	abort_message = 'Simulation finished'
658
659	call abort_gcm(modname,abort_message,0)
660	ENDIF
661	c-----------------------------------------------------------------------
662	c ecriture du fichier histoire moyenne:
663	c -------------------------------------
664
665	IF(MOD(itau,iperiod).EQ.0 .OR. itau.EQ.itaufin) THEN
666	IF(itau.EQ.itaufin) THEN
667	iav=1
668	ELSE
669	iav=0
670	ENDIF
671
672	! ! Ehouarn: re-compute geopotential for outputs
673	CALL geopot(ip1jmp1,teta,pk,pks,phis,phi)
674
675	IF (ok_dynzon) THEN
676	#ifdef CPP_IOIPSL
677	CALL bilan_dyn(2,dtvriperiod,dtvrday_step*periodav,
678	& ps,masse,pk,pbaru,pbarv,teta,phi,ucov,vcov,q)
679	#endif
680	END IF
681	IF (ok_dyn_ave) THEN
682	#ifdef CPP_IOIPSL
683	CALL writedynav(itau,vcov,
684	& ucov,teta,pk,phi,q,masse,ps,phis)
685	#endif
686	ENDIF
687
688	ENDIF ! of IF((MOD(itau,iperiod).EQ.0).OR.(itau.EQ.itaufin))
689
690	call check_isotopes_seq(q,ip1jmp1,'leapfrog 1584')
691
692	c-----------------------------------------------------------------------
693	c ecriture de la bande histoire:
694	c ------------------------------
695
696	IF( MOD(itau,iecri).EQ.0) THEN
697	! Ehouarn: output only during LF or Backward Matsuno
698	if (leapf.or.(.not.leapf.and.(.not.forward))) then
699	CALL geopot(ip1jmp1,teta,pk,pks,phis,phi)
700	unat=0.
701	do l=1,llm
702	unat(iip2:ip1jm,l)=ucov(iip2:ip1jm,l)/cu(iip2:ip1jm)
703	vnat(:,l)=vcov(:,l)/cv(:)
704	enddo
705	#ifdef CPP_IOIPSL
706	if (ok_dyn_ins) then
707	! write(lunout,*) "leapfrog: call writehist, itau=",itau
708	CALL writehist(itau,vcov,ucov,teta,phi,q,masse,ps,phis)
709	! call WriteField('ucov',reshape(ucov,(/iip1,jmp1,llm/)))
710	! call WriteField('vcov',reshape(vcov,(/iip1,jjm,llm/)))
711	! call WriteField('teta',reshape(teta,(/iip1,jmp1,llm/)))
712	! call WriteField('ps',reshape(ps,(/iip1,jmp1/)))
713	! call WriteField('masse',reshape(masse,(/iip1,jmp1,llm/)))
714	endif ! of if (ok_dyn_ins)
715	#endif
716	! For some Grads outputs of fields
717	if (output_grads_dyn) then
718	#include "write_grads_dyn.h"
719	endif
720	endif ! of if (leapf.or.(.not.leapf.and.(.not.forward)))
721	ENDIF ! of IF(MOD(itau,iecri).EQ.0)
722
723	IF(itau.EQ.itaufin) THEN
724
725
726	! if (planet_type.eq."earth") then
727	! Write an Earth-format restart file
728	CALL dynredem1("restart.nc",start_time,
729	& vcov,ucov,teta,q,masse,ps)
730	! endif ! of if (planet_type.eq."earth")
731
732	CLOSE(99)
733	if (ok_guide) then
734	! set ok_guide to false to avoid extra output
735	! in following forward step
736	ok_guide=.false.
737	endif
738	!!! Ehouarn: Why not stop here and now?
739	ENDIF ! of IF (itau.EQ.itaufin)
740
741	c-----------------------------------------------------------------------
742	c gestion de l'integration temporelle:
743	c ------------------------------------
744
745	IF( MOD(itau,iperiod).EQ.0 ) THEN
746	GO TO 1
747	ELSE IF ( MOD(itau-1,iperiod). EQ. 0 ) THEN
748
749	IF( forward ) THEN
750	c fin du pas forward et debut du pas backward
751
752	forward = .FALSE.
753	leapf = .FALSE.
754	GO TO 2
755
756	ELSE
757	c fin du pas backward et debut du premier pas leapfrog
758
759	leapf = .TRUE.
760	dt = 2.*dtvr
761	GO TO 2
762	END IF ! of IF (forward)
763	ELSE
764
765	c ...... pas leapfrog .....
766
767	leapf = .TRUE.
768	dt = 2.*dtvr
769	GO TO 2
770	END IF ! of IF (MOD(itau,iperiod).EQ.0)
771	! ELSEIF (MOD(itau-1,iperiod).EQ.0)
772
773	ELSE ! of IF (.not.purmats)
774
775	call check_isotopes_seq(q,ip1jmp1,'leapfrog 1664')
776
777	c ........................................................
778	c .............. schema matsuno ...............
779	c ........................................................
780	IF( forward ) THEN
781
782	itau = itau + 1
783	c iday = day_ini+itau/day_step
784	c time = REAL(itau-(iday-day_ini)*day_step)/day_step+time_0
785	c
786	c IF(time.GT.1.) THEN
787	c time = time-1.
788	c iday = iday+1
789	c ENDIF
790
791	forward = .FALSE.
792	IF( itau. EQ. itaufinp1 ) then
793	abort_message = 'Simulation finished'
794	call abort_gcm(modname,abort_message,0)
795	ENDIF
796	GO TO 2
797
798	ELSE ! of IF(forward) i.e. backward step
799
800	call check_isotopes_seq(q,ip1jmp1,'leapfrog 1698')
801
802	IF(MOD(itau,iperiod).EQ.0 .OR. itau.EQ.itaufin) THEN
803	IF(itau.EQ.itaufin) THEN
804	iav=1
805	ELSE
806	iav=0
807	ENDIF
808
809	! ! Ehouarn: re-compute geopotential for outputs
810	CALL geopot(ip1jmp1,teta,pk,pks,phis,phi)
811
812	IF (ok_dynzon) THEN
813	#ifdef CPP_IOIPSL
814	CALL bilan_dyn(2,dtvriperiod,dtvrday_step*periodav,
815	& ps,masse,pk,pbaru,pbarv,teta,phi,ucov,vcov,q)
816	#endif
817	ENDIF
818	IF (ok_dyn_ave) THEN
819	#ifdef CPP_IOIPSL
820	CALL writedynav(itau,vcov,
821	& ucov,teta,pk,phi,q,masse,ps,phis)
822	#endif
823	ENDIF
824
825	ENDIF ! of IF(MOD(itau,iperiod).EQ.0 .OR. itau.EQ.itaufin)
826
827	IF(MOD(itau,iecri ).EQ.0) THEN
828	c IF(MOD(itau,iecri*day_step).EQ.0) THEN
829	CALL geopot(ip1jmp1,teta,pk,pks,phis,phi)
830	unat=0.
831	do l=1,llm
832	unat(iip2:ip1jm,l)=ucov(iip2:ip1jm,l)/cu(iip2:ip1jm)
833	vnat(:,l)=vcov(:,l)/cv(:)
834	enddo
835	#ifdef CPP_IOIPSL
836	if (ok_dyn_ins) then
837	! write(lunout,*) "leapfrog: call writehist (b)",
838	! & itau,iecri
839	CALL writehist(itau,vcov,ucov,teta,phi,q,masse,ps,phis)
840	endif ! of if (ok_dyn_ins)
841	#endif
842	! For some Grads outputs
843	if (output_grads_dyn) then
844	#include "write_grads_dyn.h"
845	endif
846
847	ENDIF ! of IF(MOD(itau,iecri ).EQ.0)
848
849	IF(itau.EQ.itaufin) THEN
850	! if (planet_type.eq."earth") then
851	CALL dynredem1("restart.nc",start_time,
852	& vcov,ucov,teta,q,masse,ps)
853	! endif ! of if (planet_type.eq."earth")
854	if (ok_guide) then
855	! set ok_guide to false to avoid extra output
856	! in following forward step
857	ok_guide=.false.
858	endif
859	ENDIF ! of IF(itau.EQ.itaufin)
860
861	forward = .TRUE.
862	GO TO 1
863
864	ENDIF ! of IF (forward)
865
866	END IF ! of IF(.not.purmats)
867
868	END

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