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timemanager.f90 @ 5f53d0e

10.4.1_peseiGFS_025bugfixes+enhancementsdevrelease-10release-10.4.1scaling-bugunivie

Last change on this file since 5f53d0e was 5f53d0e, checked in by Sabine <sabine.eckhardt@…>, 7 years ago
writing information if kernel is used
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1	!**********************************************************************
2	! Copyright 1998,1999,2000,2001,2002,2005,2007,2008,2009,2010 *
3	! Andreas Stohl, Petra Seibert, A. Frank, Gerhard Wotawa, *
4	! Caroline Forster, Sabine Eckhardt, John Burkhart, Harald Sodemann *
5	! *
6	! This file is part of FLEXPART. *
7	! *
8	! FLEXPART is free software: you can redistribute it and/or modify *
9	! it under the terms of the GNU General Public License as published by*
10	! the Free Software Foundation, either version 3 of the License, or *
11	! (at your option) any later version. *
12	! *
13	! FLEXPART is distributed in the hope that it will be useful, *
14	! but WITHOUT ANY WARRANTY; without even the implied warranty of *
15	! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16	! GNU General Public License for more details. *
17	! *
18	! You should have received a copy of the GNU General Public License *
19	! along with FLEXPART. If not, see <http://www.gnu.org/licenses/>. *
20	!**********************************************************************
21
22	subroutine timemanager
23
24	!*****************************************************************************
25	! *
26	! Handles the computation of trajectories, i.e. determines which *
27	! trajectories have to be computed at what time. *
28	! Manages dry+wet deposition routines, radioactive decay and the computation *
29	! of concentrations. *
30	! *
31	! Author: A. Stohl *
32	! *
33	! 20 May 1996 *
34	! *
35	!*****************************************************************************
36	! Changes, Bernd C. Krueger, Feb. 2001: *
37	! Call of convmix when new windfield is read *
38	!------------------------------------ *
39	! Changes Petra Seibert, Sept 2002 *
40	! fix wet scavenging problem *
41	! Code may not be correct for decay of deposition! *
42	! Changes Petra Seibert, Nov 2002 *
43	! call convection BEFORE new fields are read in BWD mode *
44	! Changes Caroline Forster, Feb 2005 *
45	! new interface between flexpart and convection scheme *
46	! Emanuel's latest subroutine convect43c.f is used *
47	! Changes Stefan Henne, Harald Sodemann, 2013-2014 *
48	! added netcdf output code *
49	! Changes Espen Sollum 2014 *
50	! For compatibility with MPI version, *
51	! variables uap,ucp,uzp,us,vs,ws,cbt now in module com_mod *
52	!*****************************************************************************
53	! *
54	! Variables: *
55	! DEP .true. if either wet or dry deposition is switched on *
56	! decay(maxspec) [1/s] decay constant for radioactive decay *
57	! DRYDEP .true. if dry deposition is switched on *
58	! ideltas [s] modelling period *
59	! itime [s] actual temporal position of calculation *
60	! ldeltat [s] time since computation of radioact. decay of depositions*
61	! loutaver [s] averaging period for concentration calculations *
62	! loutend [s] end of averaging for concentration calculations *
63	! loutnext [s] next time at which output fields shall be centered *
64	! loutsample [s] sampling interval for averaging of concentrations *
65	! loutstart [s] start of averaging for concentration calculations *
66	! loutstep [s] time interval for which concentrations shall be *
67	! calculated *
68	! npoint(maxpart) index, which starting point the trajectory has *
69	! starting positions of trajectories *
70	! nstop serves as indicator for fate of particles *
71	! in the particle loop *
72	! nstop1 serves as indicator for wind fields (see getfields) *
73	! outnum number of samples for each concentration calculation *
74	! outnum number of samples for each concentration calculation *
75	! prob probability of absorption at ground due to dry *
76	! deposition *
77	! WETDEP .true. if wet deposition is switched on *
78	! weight weight for each concentration sample (1/2 or 1) *
79	! uap(maxpart),ucp(maxpart),uzp(maxpart) = random velocities due to *
80	! turbulence *
81	! us(maxpart),vs(maxpart),ws(maxpart) = random velocities due to inter- *
82	! polation *
83	! xtra1(maxpart), ytra1(maxpart), ztra1(maxpart) = *
84	! spatial positions of trajectories *
85	! *
86	! Constants: *
87	! maxpart maximum number of trajectories *
88	! *
89	!*****************************************************************************
90
91	use unc_mod
92	use point_mod
93	use xmass_mod
94	use flux_mod
95	use outg_mod
96	use oh_mod
97	use par_mod
98	use com_mod
99	use netcdf_output_mod, only: concoutput_netcdf,concoutput_nest_netcdf,&
100	&concoutput_surf_netcdf,concoutput_surf_nest_netcdf
101
102	implicit none
103
104	integer :: j,ks,kp,l,n,itime=0,nstop,nstop1
105	! integer :: ksp
106	integer :: loutnext,loutstart,loutend
107	integer :: ix,jy,ldeltat,itage,nage,idummy
108	integer :: i_nan=0,ii_nan,total_nan_intl=0 !added by mc to check instability in CBL scheme
109	real :: outnum,weight,prob_rec(maxspec),prob(maxspec),decfact,wetscav(maxspec)
110	! real :: uap(maxpart),ucp(maxpart),uzp(maxpart)
111	! real :: us(maxpart),vs(maxpart),ws(maxpart)
112	! integer(kind=2) :: cbt(maxpart)
113	real(sp) :: gridtotalunc
114	real(dep_prec) :: drydeposit(maxspec),wetgridtotalunc,drygridtotalunc
115	real :: xold,yold,zold,xmassfract
116	real :: grfraction(3)
117	real, parameter :: e_inv = 1.0/exp(1.0)
118
119	!double precision xm(maxspec,maxpointspec_act),
120	! + xm_depw(maxspec,maxpointspec_act),
121	! + xm_depd(maxspec,maxpointspec_act)
122
123
124	!open(88,file='TEST.dat')
125
126	! First output for time 0
127	!************************
128
129	loutnext=loutstep/2
130	outnum=0.
131	loutstart=loutnext-loutaver/2
132	loutend=loutnext+loutaver/2
133
134	! open(127,file=path(2)(1:length(2))//'depostat.dat'
135	! + ,form='unformatted')
136	!write (,) 'writing deposition statistics depostat.dat!'
137
138	!**********************************************************************
139	! Loop over the whole modelling period in time steps of mintime seconds
140	!**********************************************************************
141
142	!ZHG 2015
143	!CGZ-lifetime: set lifetime to 0
144	! checklifetime(:,:)=0
145	! species_lifetime(:,:)=0
146	! print*, 'Initialized lifetime'
147	!CGZ-lifetime: set lifetime to 0
148
149	if (.not.usekernel) write(,) 'Not using the kernel'
150	write(*,46) float(itime)/3600,itime,numpart
151
152	if (verbosity.gt.0) then
153	write (,) 'timemanager> starting simulation'
154	if (verbosity.gt.1) then
155	CALL SYSTEM_CLOCK(count_clock)
156	WRITE(,) 'timemanager> SYSTEM CLOCK',(count_clock - count_clock0)/real(count_rate)
157	endif
158	endif
159
160	do itime=0,ideltas,lsynctime
161
162	! Computation of wet deposition, OH reaction and mass transfer
163	! between two species every lsynctime seconds
164	! maybe wet depo frequency can be relaxed later but better be on safe side
165	! wetdepo must be called BEFORE new fields are read in but should not
166	! be called in the very beginning before any fields are loaded, or
167	! before particles are in the system
168	! Code may not be correct for decay of deposition
169	! changed by Petra Seibert 9/02
170	!********************************************************************
171
172	if (WETDEP .and. itime .ne. 0 .and. numpart .gt. 0) then
173	if (verbosity.gt.0) then
174	write (,) 'timemanager> call wetdepo'
175	endif
176	call wetdepo(itime,lsynctime,loutnext)
177	endif
178
179	if (OHREA .and. itime .ne. 0 .and. numpart .gt. 0) &
180	call ohreaction(itime,lsynctime,loutnext)
181
182	if (ASSSPEC .and. itime .ne. 0 .and. numpart .gt. 0) then
183	stop 'associated species not yet implemented!'
184	! call transferspec(itime,lsynctime,loutnext)
185	endif
186
187	! compute convection for backward runs
188	!*************************************
189
190	if ((ldirect.eq.-1).and.(lconvection.eq.1).and.(itime.lt.0)) then
191	if (verbosity.gt.0) then
192	write (,) 'timemanager> call convmix -- backward'
193	endif
194	call convmix(itime)
195	if (verbosity.gt.1) then
196	!CALL SYSTEM_CLOCK(count_clock, count_rate, count_max)
197	CALL SYSTEM_CLOCK(count_clock)
198	WRITE(,) 'timemanager> SYSTEM CLOCK',(count_clock - count_clock0)/real(count_rate)
199	endif
200	endif
201
202	! Get necessary wind fields if not available
203	!*******************************************
204	if (verbosity.gt.0) then
205	write (,) 'timemanager> call getfields'
206	endif
207	call getfields(itime,nstop1)
208	if (verbosity.gt.1) then
209	CALL SYSTEM_CLOCK(count_clock)
210	WRITE(,) 'timemanager> SYSTEM CLOCK',(count_clock - count_clock0)/real(count_rate)
211	endif
212	if (nstop1.gt.1) stop 'NO METEO FIELDS AVAILABLE'
213
214	! Get hourly OH fields if not available
215	!****************************************************
216	if (OHREA) then
217	if (verbosity.gt.0) then
218	write (,) 'timemanager> call gethourlyOH'
219	endif
220	call gethourlyOH(itime)
221	if (verbosity.gt.1) then
222	CALL SYSTEM_CLOCK(count_clock)
223	WRITE(,) 'timemanager> SYSTEM CLOCK',(count_clock - count_clock0)/real(count_rate)
224	endif
225	endif
226
227	! Release particles
228	!******************
229
230	if (verbosity.gt.0) then
231	write (,) 'timemanager> Release particles'
232	endif
233
234	if (mdomainfill.ge.1) then
235	if (itime.eq.0) then
236	if (verbosity.gt.0) then
237	write (,) 'timemanager> call init_domainfill'
238	endif
239	call init_domainfill
240	else
241	if (verbosity.gt.0) then
242	write (,) 'timemanager> call boundcond_domainfill'
243	endif
244	call boundcond_domainfill(itime,loutend)
245	endif
246	else
247	if (verbosity.gt.0) then
248	print*,'call releaseparticles'
249	endif
250	call releaseparticles(itime)
251	if (verbosity.gt.1) then
252	CALL SYSTEM_CLOCK(count_clock)
253	WRITE(,) 'timemanager> SYSTEM CLOCK',(count_clock - count_clock0)/real(count_rate)
254	endif
255	endif
256
257
258	! Compute convective mixing for forward runs
259	! for backward runs it is done before next windfield is read in
260	!**************************************************************
261
262	if ((ldirect.eq.1).and.(lconvection.eq.1)) then
263	if (verbosity.gt.0) then
264	write (,) 'timemanager> call convmix -- forward'
265	endif
266	call convmix(itime)
267	endif
268
269	! If middle of averaging period of output fields is reached, accumulated
270	! deposited mass radioactively decays
271	!***********************************************************************
272
273	if (DEP.and.(itime.eq.loutnext).and.(ldirect.gt.0)) then
274	do ks=1,nspec
275	do kp=1,maxpointspec_act
276	if (decay(ks).gt.0.) then
277	do nage=1,nageclass
278	do l=1,nclassunc
279	! Mother output grid
280	do jy=0,numygrid-1
281	do ix=0,numxgrid-1
282	wetgridunc(ix,jy,ks,kp,l,nage)= &
283	wetgridunc(ix,jy,ks,kp,l,nage)* &
284	exp(-1.outstepdecay(ks))
285	drygridunc(ix,jy,ks,kp,l,nage)= &
286	drygridunc(ix,jy,ks,kp,l,nage)* &
287	exp(-1.outstepdecay(ks))
288	end do
289	end do
290	! Nested output grid
291	if (nested_output.eq.1) then
292	do jy=0,numygridn-1
293	do ix=0,numxgridn-1
294	wetgriduncn(ix,jy,ks,kp,l,nage)= &
295	wetgriduncn(ix,jy,ks,kp,l,nage)* &
296	exp(-1.outstepdecay(ks))
297	drygriduncn(ix,jy,ks,kp,l,nage)= &
298	drygriduncn(ix,jy,ks,kp,l,nage)* &
299	exp(-1.outstepdecay(ks))
300	end do
301	end do
302	endif
303	end do
304	end do
305	endif
306	end do
307	end do
308	endif
309
310	!!! CHANGE: These lines may be switched on to check the conservation
311	!!! of mass within FLEXPART
312	! if (itime.eq.loutnext) then
313	! do 247 ksp=1, nspec
314	! do 247 kp=1, maxpointspec_act
315	!47 xm(ksp,kp)=0.
316
317	! do 249 ksp=1, nspec
318	! do 249 j=1,numpart
319	! if (ioutputforeachrelease.eq.1) then
320	! kp=npoint(j)
321	! else
322	! kp=1
323	! endif
324	! if (itra1(j).eq.itime) then
325	! xm(ksp,kp)=xm(ksp,kp)+xmass1(j,ksp)
326	! write(,) 'xmass: ',xmass1(j,ksp),j,ksp,nspec
327	! endif
328	!49 continue
329	! do 248 ksp=1,nspec
330	! do 248 kp=1,maxpointspec_act
331	! xm_depw(ksp,kp)=0.
332	! xm_depd(ksp,kp)=0.
333	! do 248 nage=1,nageclass
334	! do 248 ix=0,numxgrid-1
335	! do 248 jy=0,numygrid-1
336	! do 248 l=1,nclassunc
337	! xm_depw(ksp,kp)=xm_depw(ksp,kp)
338	! + +wetgridunc(ix,jy,ksp,kp,l,nage)
339	!48 xm_depd(ksp,kp)=xm_depd(ksp,kp)
340	! + +drygridunc(ix,jy,ksp,kp,l,nage)
341	! do 246 ksp=1,nspec
342	!46 write(88,'(2i10,3e12.3)')
343	! + itime,ksp,(xm(ksp,kp),kp=1,maxpointspec_act),
344	! + (xm_depw(ksp,kp),kp=1,maxpointspec_act),
345	! + (xm_depd(ksp,kp),kp=1,maxpointspec_act)
346	! endif
347	!!! CHANGE
348
349
350
351	! Check whether concentrations are to be calculated
352	!**************************************************
353
354	if ((ldirectitime.ge.ldirectloutstart).and. &
355	(ldirectitime.le.ldirectloutend)) then ! add to grid
356	if (mod(itime-loutstart,loutsample).eq.0) then
357
358	! If we are exactly at the start or end of the concentration averaging interval,
359	! give only half the weight to this sample
360	!*****************************************************************************
361
362	if ((itime.eq.loutstart).or.(itime.eq.loutend)) then
363	weight=0.5
364	else
365	weight=1.0
366	endif
367	outnum=outnum+weight
368	call conccalc(itime,weight)
369	endif
370
371
372	if ((mquasilag.eq.1).and.(itime.eq.(loutstart+loutend)/2)) &
373	call partoutput_short(itime) ! dump particle positions in extremely compressed format
374
375
376	! Output and reinitialization of grid
377	! If necessary, first sample of new grid is also taken
378	!*****************************************************
379
380	if ((itime.eq.loutend).and.(outnum.gt.0.)) then
381	if ((iout.le.3.).or.(iout.eq.5)) then
382	if (surf_only.ne.1) then
383	if (lnetcdfout.eq.1) then
384	call concoutput_netcdf(itime,outnum,gridtotalunc,wetgridtotalunc,drygridtotalunc)
385	else
386	call concoutput(itime,outnum,gridtotalunc,wetgridtotalunc,drygridtotalunc)
387	endif
388	else
389	if (verbosity.eq.1) then
390	print*,'call concoutput_surf '
391	call system_clock(count_clock)
392	write(,) 'system clock',count_clock - count_clock0
393	endif
394	if (lnetcdfout.eq.1) then
395	call concoutput_surf_netcdf(itime,outnum,gridtotalunc,wetgridtotalunc,drygridtotalunc)
396	else
397	call concoutput_surf(itime,outnum,gridtotalunc,wetgridtotalunc,drygridtotalunc)
398	if (verbosity.eq.1) then
399	print*,'called concoutput_surf '
400	call system_clock(count_clock)
401	write(,) 'system clock',count_clock - count_clock0
402	endif
403	endif
404	endif
405
406	if (nested_output .eq. 1) then
407	if (lnetcdfout.eq.0) then
408	if (surf_only.ne.1) then
409	call concoutput_nest(itime,outnum)
410	else
411	call concoutput_surf_nest(itime,outnum)
412	endif
413	else
414	if (surf_only.ne.1) then
415	call concoutput_nest_netcdf(itime,outnum)
416	else
417	call concoutput_surf_nest_netcdf(itime,outnum)
418	endif
419	endif
420	endif
421	outnum=0.
422	endif
423	if ((iout.eq.4).or.(iout.eq.5)) call plumetraj(itime)
424	if (iflux.eq.1) call fluxoutput(itime)
425	write(*,45) itime,numpart,gridtotalunc,wetgridtotalunc,drygridtotalunc
426
427	!CGZ-lifetime: output species lifetime
428	!ZHG
429	! write(,) 'Overview species lifetime in days', &
430	! real((species_lifetime(:,1)/species_lifetime(:,2))/real(3600.0*24.0))
431	! write(,) 'all info:',species_lifetime
432	!ZHG
433	!CGZ-lifetime: output species lifetime
434
435	!write(*,46) float(itime)/3600,itime,numpart
436	45 format(i13,' SECONDS SIMULATED: ',i13, ' PARTICLES: Uncertainty: ',3f7.3)
437	46 format(' Simulated ',f7.1,' hours (',i13,' s), ',i13, ' particles')
438	if (ipout.ge.1) call partoutput(itime) ! dump particle positions
439	loutnext=loutnext+loutstep
440	loutstart=loutnext-loutaver/2
441	loutend=loutnext+loutaver/2
442	if (itime.eq.loutstart) then
443	weight=0.5
444	outnum=outnum+weight
445	call conccalc(itime,weight)
446	endif
447
448
449	! Check, whether particles are to be split:
450	! If so, create new particles and attribute all information from the old
451	! particles also to the new ones; old and new particles both get half the
452	! mass of the old ones
453	!************************************************************************
454
455	if (ldirectitime.ge.ldirectitsplit) then
456	n=numpart
457	do j=1,numpart
458	if (ldirectitime.ge.ldirectitrasplit(j)) then
459	if (n.lt.maxpart) then
460	n=n+1
461	itrasplit(j)=2*(itrasplit(j)-itramem(j))+itramem(j)
462	itrasplit(n)=itrasplit(j)
463	itramem(n)=itramem(j)
464	itra1(n)=itra1(j)
465	idt(n)=idt(j)
466	npoint(n)=npoint(j)
467	nclass(n)=nclass(j)
468	xtra1(n)=xtra1(j)
469	ytra1(n)=ytra1(j)
470	ztra1(n)=ztra1(j)
471	uap(n)=uap(j)
472	ucp(n)=ucp(j)
473	uzp(n)=uzp(j)
474	us(n)=us(j)
475	vs(n)=vs(j)
476	ws(n)=ws(j)
477	cbt(n)=cbt(j)
478	do ks=1,nspec
479	xmass1(j,ks)=xmass1(j,ks)/2.
480	xmass1(n,ks)=xmass1(j,ks)
481	end do
482	endif
483	endif
484	end do
485	numpart=n
486	endif
487	endif
488	endif
489
490
491	if (itime.eq.ideltas) exit ! almost finished
492
493	! Compute interval since radioactive decay of deposited mass was computed
494	!************************************************************************
495
496	if (itime.lt.loutnext) then
497	ldeltat=itime-(loutnext-loutstep)
498	else ! first half of next interval
499	ldeltat=itime-loutnext
500	endif
501
502
503	! Loop over all particles
504	!************************
505	! Various variables for testing reason of CBL scheme, by mc
506	well_mixed_vector=0. !erase vector to test well mixed condition: modified by mc
507	well_mixed_norm=0. !erase normalization to test well mixed condition: modified by mc
508	avg_ol=0.
509	avg_wst=0.
510	avg_h=0.
511	avg_air_dens=0. !erase vector to obtain air density at particle positions: modified by mc
512	!-----------------------------------------------------------------------------
513	do j=1,numpart
514
515
516	! If integration step is due, do it
517	!**********************************
518
519	if (itra1(j).eq.itime) then
520
521	if (ioutputforeachrelease.eq.1) then
522	kp=npoint(j)
523	else
524	kp=1
525	endif
526	! Determine age class of the particle
527	itage=abs(itra1(j)-itramem(j))
528	do nage=1,nageclass
529	if (itage.lt.lage(nage)) exit
530	end do
531
532	! Initialize newly released particle
533	!***********************************
534
535	if ((itramem(j).eq.itime).or.(itime.eq.0)) &
536	call initialize(itime,idt(j),uap(j),ucp(j),uzp(j), &
537	us(j),vs(j),ws(j),xtra1(j),ytra1(j),ztra1(j),cbt(j))
538
539	! Memorize particle positions
540	!****************************
541
542	xold=xtra1(j)
543	yold=ytra1(j)
544	zold=ztra1(j)
545
546
547	! RECEPTOR: dry/wet depovel
548	!****************************
549	! Before the particle is moved
550	! the calculation of the scavenged mass shall only be done once after release
551	! xscav_frac1 was initialised with a negative value
552
553	if (DRYBKDEP) then
554	do ks=1,nspec
555	if ((xscav_frac1(j,ks).lt.0)) then
556	call get_vdep_prob(itime,xtra1(j),ytra1(j),ztra1(j),prob_rec)
557	if (DRYDEPSPEC(ks)) then ! dry deposition
558	xscav_frac1(j,ks)=prob_rec(ks)
559	else
560	xmass1(j,ks)=0.
561	xscav_frac1(j,ks)=0.
562	endif
563	endif
564	enddo
565	endif
566
567	if (WETBKDEP) then
568	do ks=1,nspec
569	if ((xscav_frac1(j,ks).lt.0)) then
570	call get_wetscav(itime,lsynctime,loutnext,j,ks,grfraction,idummy,idummy,wetscav)
571	if (wetscav(ks).gt.0) then
572	xscav_frac1(j,ks)=wetscav(ks)* &
573	(zpoint2(npoint(j))-zpoint1(npoint(j)))*grfraction(1)
574	else
575	xmass1(j,ks)=0.
576	xscav_frac1(j,ks)=0.
577	endif
578	endif
579	enddo
580	endif
581
582	! Integrate Lagevin equation for lsynctime seconds
583	!*************************************************
584
585	if (verbosity.gt.0) then
586	if (j.eq.1) then
587	write (,) 'timemanager> call advance'
588	endif
589	endif
590
591	call advance(itime,npoint(j),idt(j),uap(j),ucp(j),uzp(j), &
592	us(j),vs(j),ws(j),nstop,xtra1(j),ytra1(j),ztra1(j),prob, &
593	cbt(j))
594	! write (,) 'advance: ',prob(1),xmass1(j,1),ztra1(j)
595
596	! Calculate the gross fluxes across layer interfaces
597	!***************************************************
598
599	if (iflux.eq.1) call calcfluxes(nage,j,xold,yold,zold)
600
601
602	! Determine, when next time step is due
603	! If trajectory is terminated, mark it
604	!**************************************
605
606	if (nstop.gt.1) then
607	if (linit_cond.ge.1) call initial_cond_calc(itime,j)
608	itra1(j)=-999999999
609	else
610	itra1(j)=itime+lsynctime
611
612
613	! Dry deposition and radioactive decay for each species
614	! Also check maximum (of all species) of initial mass remaining on the particle;
615	! if it is below a threshold value, terminate particle
616	!*****************************************************************************
617
618	xmassfract=0.
619	do ks=1,nspec
620	if (decay(ks).gt.0.) then ! radioactive decay
621	decfact=exp(-real(abs(lsynctime))*decay(ks))
622	else
623	decfact=1.
624	endif
625
626	if (DRYDEPSPEC(ks)) then ! dry deposition
627	drydeposit(ks)=xmass1(j,ks)prob(ks)decfact
628	xmass1(j,ks)=xmass1(j,ks)(1.-prob(ks))decfact
629	if (decay(ks).gt.0.) then ! correct for decay (see wetdepo)
630	drydeposit(ks)=drydeposit(ks)* &
631	exp(real(abs(ldeltat))*decay(ks))
632	endif
633	else ! no dry deposition
634	xmass1(j,ks)=xmass1(j,ks)*decfact
635	endif
636
637	! Skip check on mass fraction when npoint represents particle number
638	if (mdomainfill.eq.0.and.mquasilag.eq.0) then
639	if (xmass(npoint(j),ks).gt.0.) &
640	xmassfract=max(xmassfract,real(npart(npoint(j)))* &
641	xmass1(j,ks)/xmass(npoint(j),ks))
642	!ZHG 2015
643	!CGZ-lifetime: Check mass fraction left/save lifetime
644	! if(real(npart(npoint(j)))*xmass1(j,ks)/xmass(npoint(j),ks).lt.e_inv.and.checklifetime(j,ks).eq.0.)then
645	!Mass below 1% of initial >register lifetime
646	! checklifetime(j,ks)=abs(itra1(j)-itramem(j))
647	! species_lifetime(ks,1)=species_lifetime(ks,1)+abs(itra1(j)-itramem(j))
648	! species_lifetime(ks,2)= species_lifetime(ks,2)+1
649	! endif
650	!CGZ-lifetime: Check mass fraction left/save lifetime
651	!ZHG 2015
652	else
653	xmassfract=1.0
654	end if
655	end do
656
657	if (xmassfract.lt.minmass) then ! terminate all particles carrying less mass
658	itra1(j)=-999999999
659	if (verbosity.gt.0) then
660	print*,'terminated particle ',j,' for small mass'
661	endif
662	endif
663
664	! Sabine Eckhardt, June 2008
665	! don't create depofield for backward runs
666	if (DRYDEP.AND.(ldirect.eq.1)) then
667	call drydepokernel(nclass(j),drydeposit,real(xtra1(j)), &
668	real(ytra1(j)),nage,kp)
669	if (nested_output.eq.1) call drydepokernel_nest( &
670	nclass(j),drydeposit,real(xtra1(j)),real(ytra1(j)), &
671	nage,kp)
672	endif
673
674	! Terminate trajectories that are older than maximum allowed age
675	!***************************************************************
676
677	if (abs(itra1(j)-itramem(j)).ge.lage(nageclass)) then
678	if (linit_cond.ge.1) call initial_cond_calc(itime+lsynctime,j)
679	itra1(j)=-999999999
680	if (verbosity.gt.0) then
681	print*,'terminated particle ',j,' for age'
682	endif
683	endif
684	endif
685
686	endif
687
688	end do !loop over particles
689
690	! Counter of "unstable" particle velocity during a time scale of
691	! maximumtl=20 minutes (defined in com_mod)
692	!***************************************************************
693
694	total_nan_intl=0
695	i_nan=i_nan+1 ! added by mc to count nan during a time of maxtl (i.e. maximum tl fixed here to 20 minutes, see com_mod)
696	sum_nan_count(i_nan)=nan_count
697	if (i_nan > maxtl/lsynctime) i_nan=1 !lsynctime must be <= maxtl
698	do ii_nan=1, (maxtl/lsynctime)
699	total_nan_intl=total_nan_intl+sum_nan_count(ii_nan)
700	end do
701	! Output to keep track of the numerical instabilities in CBL simulation and if
702	! they are compromising the final result (or not)
703	if (cblflag.eq.1) print *,j,itime,'nan_synctime',nan_count,'nan_tl',total_nan_intl
704
705	end do
706
707
708	! Complete the calculation of initial conditions for particles not yet terminated
709	!*****************************************************************************
710
711	do j=1,numpart
712	if (linit_cond.ge.1) call initial_cond_calc(itime,j)
713	end do
714
715	if (ipout.eq.2) call partoutput(itime) ! dump particle positions
716
717	if (linit_cond.ge.1) call initial_cond_output(itime) ! dump initial cond. field
718
719	!close(104)
720
721	! De-allocate memory and end
722	!***************************
723
724	if (iflux.eq.1) then
725	deallocate(flux)
726	endif
727	if (OHREA) then
728	deallocate(OH_field,OH_hourly,lonOH,latOH,altOH)
729	endif
730	if (ldirect.gt.0) then
731	deallocate(drygridunc,wetgridunc)
732	endif
733	deallocate(gridunc)
734	deallocate(xpoint1,xpoint2,ypoint1,ypoint2,zpoint1,zpoint2,xmass)
735	deallocate(ireleasestart,ireleaseend,npart,kindz)
736	deallocate(xmasssave)
737	if (nested_output.eq.1) then
738	deallocate(orooutn, arean, volumen)
739	if (ldirect.gt.0) then
740	deallocate(griduncn,drygriduncn,wetgriduncn)
741	endif
742	endif
743	deallocate(outheight,outheighthalf)
744	deallocate(oroout, area, volume)
745
746	end subroutine timemanager
747

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