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source: palm/trunk/SOURCE/time_integration.f90 @ 2707

Last change on this file since 2707 was 2696, checked in by kanani, 7 years ago
Merge of branch palm4u into trunk
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1	!> @file time_integration.f90
2	!------------------------------------------------------------------------------!
3	! This file is part of the PALM model system.
4	!
5	! PALM is free software: you can redistribute it and/or modify it under the
6	! terms of the GNU General Public License as published by the Free Software
7	! Foundation, either version 3 of the License, or (at your option) any later
8	! version.
9	!
10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13	!
14	! You should have received a copy of the GNU General Public License along with
15	! PALM. If not, see <http://www.gnu.org/licenses/>.
16	!
17	! Copyright 1997-2017 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! ------------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: time_integration.f90 2696 2017-12-14 17:12:51Z suehring $
27	! - Implementation of uv exposure model (FK)
28	! - Moved vnest_boundary_conds_khkm from tcm_diffusivities to here (TG)
29	! - renamed diffusivities to tcm_diffusivities (TG)
30	! - implement prognostic equation for diss (TG)
31	! - Moved/commented CALL to chem_emissions (FK)
32	! - Added CALL to chem_emissions (FK)
33	! - Implementation of chemistry module (FK)
34	! - Calls for setting boundary conditions in USM and LSM (MS)
35	! - Large-scale forcing with larger-scale models implemented (MS)
36	! - Rename usm_radiation into radiation_interactions; merge with branch
37	! radiation (MS)
38	! - added call for usm_green_heat_model for green building surfaces (RvT)
39	! - added call for usm_temperature_near_surface for use in indoor model (RvT)
40	!
41	! 2617 2017-11-16 12:47:24Z suehring
42	! Bugfix, assure that the reference state does not become zero.
43	!
44	! 2563 2017-10-19 15:36:10Z Giersch
45	! Variable wind_turbine moved to module control_parameters
46	!
47	! 2365 2017-08-21 14:59:59Z kanani
48	! Vertical grid nesting implemented (SadiqHuq)
49	!
50	! 2320 2017-07-21 12:47:43Z suehring
51	! Set bottom boundary conditions after nesting interpolation and anterpolation
52	!
53	! 2299 2017-06-29 10:14:38Z maronga
54	! Call of soil model adjusted
55	!
56	! 2292 2017-06-20 09:51:42Z schwenkel
57	! Implementation of new microphysic scheme: cloud_scheme = 'morrison'
58	! includes two more prognostic equations for cloud drop concentration (nc)
59	! and cloud water content (qc).
60	!
61	! 2271 2017-06-09 12:34:55Z sward
62	! Start timestep message changed
63	!
64	! 2259 2017-06-08 09:09:11Z gronemeier
65	! Implemented synthetic turbulence generator
66	!
67	! 2233 2017-05-30 18:08:54Z suehring
68	!
69	! 2232 2017-05-30 17:47:52Z suehring
70	! Adjustments to new topography and surface concept
71	! Modify passed parameters for disturb_field
72	!
73	! 2178 2017-03-17 11:07:39Z hellstea
74	! Setting perturbations at all times near inflow boundary is removed
75	! in case of nested boundaries
76	!
77	! 2174 2017-03-13 08:18:57Z maronga
78	! Added support for nesting with cloud microphysics
79	!
80	! 2118 2017-01-17 16:38:49Z raasch
81	! OpenACC directives and related code removed
82	!
83	! 2050 2016-11-08 15:00:55Z gronemeier
84	! Implement turbulent outflow condition
85	!
86	! 2031 2016-10-21 15:11:58Z knoop
87	! renamed variable rho to rho_ocean
88	!
89	! 2011 2016-09-19 17:29:57Z kanani
90	! Flag urban_surface is now defined in module control_parameters,
91	! removed commented CALLs of global_min_max.
92	!
93	! 2007 2016-08-24 15:47:17Z kanani
94	! Added CALLs for new urban surface model
95	!
96	! 2000 2016-08-20 18:09:15Z knoop
97	! Forced header and separation lines into 80 columns
98	!
99	! 1976 2016-07-27 13:28:04Z maronga
100	! Simplified calls to radiation model
101	!
102	! 1960 2016-07-12 16:34:24Z suehring
103	! Separate humidity and passive scalar
104	!
105	! 1957 2016-07-07 10:43:48Z suehring
106	! flight module added
107	!
108	! 1919 2016-05-27 14:51:23Z raasch
109	! Initial version of purely vertical nesting introduced.
110	!
111	! 1918 2016-05-27 14:35:57Z raasch
112	! determination of time step moved to the end of the time step loop,
113	! the first time step is now always calculated before the time step loop (i.e.
114	! also in case of restart runs)
115	!
116	! 1914 2016-05-26 14:44:07Z witha
117	! Added call for wind turbine model
118	!
119	! 1878 2016-04-19 12:30:36Z hellstea
120	! Synchronization for nested runs rewritten
121	!
122	! 1853 2016-04-11 09:00:35Z maronga
123	! Adjusted for use with radiation_scheme = constant
124	!
125	! 1849 2016-04-08 11:33:18Z hoffmann
126	! Adapted for modularization of microphysics
127	!
128	! 1833 2016-04-07 14:23:03Z raasch
129	! spectrum renamed spectra_mod, spectra related variables moved to spectra_mod
130	!
131	! 1831 2016-04-07 13:15:51Z hoffmann
132	! turbulence renamed collision_turbulence
133	!
134	! 1822 2016-04-07 07:49:42Z hoffmann
135	! icloud_scheme replaced by microphysics_*
136	!
137	! 1808 2016-04-05 19:44:00Z raasch
138	! output message in case unscheduled radiation calls removed
139	!
140	! 1797 2016-03-21 16:50:28Z raasch
141	! introduction of different datatransfer modes
142	!
143	! 1791 2016-03-11 10:41:25Z raasch
144	! call of pmci_update_new removed
145	!
146	! 1786 2016-03-08 05:49:27Z raasch
147	! +module spectrum
148	!
149	! 1783 2016-03-06 18:36:17Z raasch
150	! switch back of netcdf data format for mask output moved to the mask output
151	! routine
152	!
153	! 1781 2016-03-03 15:12:23Z raasch
154	! some pmc calls removed at the beginning (before timeloop),
155	! pmc initialization moved to the main program
156	!
157	! 1764 2016-02-28 12:45:19Z raasch
158	! PMC_ACTIVE flags removed,
159	! bugfix: nest synchronization after first call of timestep
160	!
161	! 1762 2016-02-25 12:31:13Z hellstea
162	! Introduction of nested domain feature
163	!
164	! 1736 2015-12-04 08:56:33Z raasch
165	! no perturbations added to total domain if energy limit has been set zero
166	!
167	! 1691 2015-10-26 16:17:44Z maronga
168	! Added option for spin-ups without land surface and radiation models. Moved calls
169	! for radiation and lan surface schemes.
170	!
171	! 1682 2015-10-07 23:56:08Z knoop
172	! Code annotations made doxygen readable
173	!
174	! 1671 2015-09-25 03:29:37Z raasch
175	! bugfix: ghostpoint exchange for array diss in case that sgs velocities are used
176	! for particles
177	!
178	! 1585 2015-04-30 07:05:52Z maronga
179	! Moved call of radiation scheme. Added support for RRTM
180	!
181	! 1551 2015-03-03 14:18:16Z maronga
182	! Added interface for different radiation schemes.
183	!
184	! 1496 2014-12-02 17:25:50Z maronga
185	! Added calls for the land surface model and radiation scheme
186	!
187	! 1402 2014-05-09 14:25:13Z raasch
188	! location messages modified
189	!
190	! 1384 2014-05-02 14:31:06Z raasch
191	! location messages added
192	!
193	! 1380 2014-04-28 12:40:45Z heinze
194	! CALL of nudge_ref added
195	! bc_pt_t_val and bc_q_t_val are updated in case nudging is used
196	!
197	! 1365 2014-04-22 15:03:56Z boeske
198	! Reset sums_ls_l to zero at each timestep
199	! +sums_ls_l
200	! Calculation of reference state (previously in subroutine calc_mean_profile)
201
202	! 1342 2014-03-26 17:04:47Z kanani
203	! REAL constants defined as wp-kind
204	!
205	! 1320 2014-03-20 08:40:49Z raasch
206	! ONLY-attribute added to USE-statements,
207	! kind-parameters added to all INTEGER and REAL declaration statements,
208	! kinds are defined in new module kinds,
209	! old module precision_kind is removed,
210	! revision history before 2012 removed,
211	! comment fields (!:) to be used for variable explanations added to
212	! all variable declaration statements
213	! 1318 2014-03-17 13:35:16Z raasch
214	! module interfaces removed
215	!
216	! 1308 2014-03-13 14:58:42Z fricke
217	! +netcdf_data_format_save
218	! For masked data, parallel netcdf output is not tested so far, hence
219	! netcdf_data_format is switched back to non-paralell output.
220	!
221	! 1276 2014-01-15 13:40:41Z heinze
222	! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars
223	!
224	! 1257 2013-11-08 15:18:40Z raasch
225	! acc-update-host directive for timestep removed
226	!
227	! 1241 2013-10-30 11:36:58Z heinze
228	! Generalize calc_mean_profile for wider use
229	! Determine shf and qsws in dependence on data from LSF_DATA
230	! Determine ug and vg in dependence on data from LSF_DATA
231	! 1221 2013-09-10 08:59:13Z raasch
232	! host update of arrays before timestep is called
233	!
234	! 1179 2013-06-14 05:57:58Z raasch
235	! mean profiles for reference state are only calculated if required,
236	! small bugfix for background communication
237	!
238	! 1171 2013-05-30 11:27:45Z raasch
239	! split of prognostic_equations deactivated (comment lines), for the time being
240	!
241	! 1128 2013-04-12 06:19:32Z raasch
242	! asynchronous transfer of ghost point data realized for acc-optimized version:
243	! prognostic_equations are first called two times for those points required for
244	! the left-right and north-south exchange, respectively, and then for the
245	! remaining points,
246	! those parts requiring global communication moved from prognostic_equations to
247	! here
248	!
249	! 1115 2013-03-26 18:16:16Z hoffmann
250	! calculation of qr and nr is restricted to precipitation
251	!
252	! 1113 2013-03-10 02:48:14Z raasch
253	! GPU-porting of boundary conditions,
254	! openACC directives updated
255	! formal parameter removed from routine boundary_conds
256	!
257	! 1111 2013-03-08 23:54:10Z raasch
258	! +internal timestep counter for cpu statistics added,
259	! openACC directives updated
260	!
261	! 1092 2013-02-02 11:24:22Z raasch
262	! unused variables removed
263	!
264	! 1065 2012-11-22 17:42:36Z hoffmann
265	! exchange of diss (dissipation rate) in case of turbulence = .TRUE. added
266	!
267	! 1053 2012-11-13 17:11:03Z hoffmann
268	! exchange of ghost points for nr, qr added
269	!
270	! 1036 2012-10-22 13:43:42Z raasch
271	! code put under GPL (PALM 3.9)
272	!
273	! 1019 2012-09-28 06:46:45Z raasch
274	! non-optimized version of prognostic_equations removed
275	!
276	! 1015 2012-09-27 09:23:24Z raasch
277	! +call of prognostic_equations_acc
278	!
279	! 1001 2012-09-13 14:08:46Z raasch
280	! all actions concerning leapfrog- and upstream-spline-scheme removed
281	!
282	! 849 2012-03-15 10:35:09Z raasch
283	! advec_particles renamed lpm, first_call_advec_particles renamed first_call_lpm
284	!
285	! 825 2012-02-19 03:03:44Z raasch
286	! wang_collision_kernel renamed wang_kernel
287	!
288	! Revision 1.1 1997/08/11 06:19:04 raasch
289	! Initial revision
290	!
291	!
292	! Description:
293	! ------------
294	!> Integration in time of the model equations, statistical analysis and graphic
295	!> output
296	!------------------------------------------------------------------------------!
297	SUBROUTINE time_integration
298
299
300	USE advec_ws, &
301	ONLY: ws_statistics
302
303	USE arrays_3d, &
304	ONLY: diss, diss_p, dzu, e, e_p, nc, nc_p, nr, nr_p, prho, pt, pt_p, pt_init, &
305	q_init, q, qc, qc_p, ql, ql_c, ql_v, ql_vp, qr, qr_p, q_p, &
306	ref_state, rho_ocean, s, s_p, sa_p, tend, u, u_p, v, vpt, &
307	v_p, w, w_p
308
309	USE calc_mean_profile_mod, &
310	ONLY: calc_mean_profile
311
312	#if defined( __chem )
313	USE chemistry_model_mod, &
314	ONLY: chem_emissions, chem_species
315
316	USE chem_modules, &
317	ONLY: nspec
318	#endif
319
320	USE control_parameters, &
321	ONLY: advected_distance_x, advected_distance_y, air_chemistry, &
322	average_count_3d, averaging_interval, averaging_interval_pr, &
323	bc_lr_cyc, bc_ns_cyc, bc_pt_t_val, &
324	bc_q_t_val, call_psolver_at_all_substeps, cloud_droplets, &
325	cloud_physics, constant_flux_layer, constant_heatflux, &
326	create_disturbances, dopr_n, constant_diffusion, coupling_mode, &
327	coupling_start_time, current_timestep_number, &
328	disturbance_created, disturbance_energy_limit, dist_range, &
329	do_sum, dt_3d, dt_averaging_input, dt_averaging_input_pr, &
330	dt_coupling, dt_data_output_av, dt_disturb, dt_do2d_xy, &
331	dt_do2d_xz, dt_do2d_yz, dt_do3d, dt_domask,dt_dopts, dt_dopr, &
332	dt_dopr_listing, dt_dots, dt_dvrp, dt_run_control, end_time, &
333	first_call_lpm, forcing, galilei_transformation, humidity, &
334	intermediate_timestep_count, intermediate_timestep_count_max, &
335	land_surface, large_scale_forcing, &
336	loop_optimization, lsf_surf, lsf_vert, masks, &
337	microphysics_morrison, microphysics_seifert, mid, nest_domain, &
338	neutral, nr_timesteps_this_run, nudging, &
339	ocean, passive_scalar, &
340	prho_reference, pt_reference, pt_slope_offset, random_heatflux, &
341	rans_tke_e, run_coupled, simulated_time, simulated_time_chr, &
342	skip_time_do2d_xy, skip_time_do2d_xz, skip_time_do2d_yz, &
343	skip_time_do3d, skip_time_domask, skip_time_dopr, &
344	skip_time_data_output_av, sloping_surface, &
345	stop_dt, terminate_coupled, terminate_run, timestep_scheme, &
346	time_coupling, time_do2d_xy, time_do2d_xz, time_do2d_yz, &
347	time_do3d, time_domask, time_dopr, time_dopr_av, &
348	time_dopr_listing, time_dopts, time_dosp, time_dosp_av, &
349	time_dots, time_do_av, time_do_sla, time_disturb, time_dvrp, &
350	time_run_control, time_since_reference_point, &
351	turbulent_inflow, turbulent_outflow, urban_surface, &
352	use_initial_profile_as_reference, &
353	use_single_reference_value, uv_exposure, u_gtrans, v_gtrans, &
354	virtual_flight, wind_turbine, ws_scheme_mom, ws_scheme_sca
355
356	USE cpulog, &
357	ONLY: cpu_log, log_point, log_point_s
358
359	USE flight_mod, &
360	ONLY: flight_measurement
361
362
363	USE indices, &
364	ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, nzt
365
366	USE interaction_droplets_ptq_mod, &
367	ONLY: interaction_droplets_ptq
368
369	USE interfaces
370
371	USE kinds
372
373	USE land_surface_model_mod, &
374	ONLY: lsm_boundary_condition, lsm_energy_balance, lsm_soil_model, &
375	skip_time_do_lsm
376
377	USE lsf_nudging_mod, &
378	ONLY: calc_tnudge, ls_forcing_surf, ls_forcing_vert, nudge_ref, &
379	forcing_bc, forcing_bc_mass_conservation
380
381	USE netcdf_data_input_mod, &
382	ONLY: force, netcdf_data_input_lsf
383
384	USE microphysics_mod, &
385	ONLY: collision_turbulence
386
387	USE particle_attributes, &
388	ONLY: particle_advection, particle_advection_start, &
389	use_sgs_for_particles, wang_kernel
390
391	USE pegrid
392
393	USE pmc_interface, &
394	ONLY: nested_run, nesting_mode, pmci_boundary_conds, pmci_datatrans, &
395	pmci_ensure_nest_mass_conservation, pmci_synchronize
396
397	USE progress_bar, &
398	ONLY: finish_progress_bar, output_progress_bar
399
400	USE prognostic_equations_mod, &
401	ONLY: prognostic_equations_cache, prognostic_equations_vector
402
403	USE radiation_model_mod, &
404	ONLY: dt_radiation, force_radiation_call, radiation, radiation_control,&
405	radiation_interaction, radiation_interactions, &
406	skip_time_do_radiation, time_radiation
407
408	USE spectra_mod, &
409	ONLY: average_count_sp, averaging_interval_sp, calc_spectra, dt_dosp, &
410	skip_time_dosp
411
412	USE statistics, &
413	ONLY: flow_statistics_called, hom, pr_palm, sums_ls_l, u_max, &
414	u_max_ijk, v_max, v_max_ijk, w_max, w_max_ijk
415
416	USE surface_layer_fluxes_mod, &
417	ONLY: surface_layer_fluxes
418
419	USE surface_mod, &
420	ONLY: surf_def_h, surf_lsm_h, surf_usm_h
421
422	USE turbulence_closure_mod, &
423	ONLY: tcm_diffusivities, production_e_init
424
425	USE urban_surface_mod, &
426	ONLY: usm_boundary_condition, usm_material_heat_model, &
427	usm_material_model, &
428	usm_surface_energy_balance, usm_green_heat_model, &
429	usm_temperature_near_surface
430
431	USE synthetic_turbulence_generator_mod, &
432	ONLY: stg_main, use_synthetic_turbulence_generator
433
434	USE user_actions_mod, &
435	ONLY: user_actions
436
437	USE uv_exposure_model_mod, &
438	ONLY: uvem_calc_exposure
439
440	USE wind_turbine_model_mod, &
441	ONLY: wtm_forces
442
443	USE vertical_nesting_mod, &
444	ONLY: vnested, vnest_anterpolate, vnest_anterpolate_e, &
445	vnest_boundary_conds, vnest_boundary_conds_khkm, &
446	vnest_deallocate, vnest_init, vnest_init_fine, &
447	vnest_start_time
448
449	IMPLICIT NONE
450
451	CHARACTER (LEN=9) :: time_to_string !<
452	INTEGER :: n
453	INTEGER :: lsp
454
455	REAL(wp) :: dt_3d_old !< temporary storage of timestep to be used for
456	!< steering of run control output interval
457	!
458	!-- At beginning determine the first time step
459	CALL timestep
460
461	!
462	!-- Synchronize the timestep in case of nested run.
463	IF ( nested_run ) THEN
464	!
465	!-- Synchronization by unifying the time step.
466	!-- Global minimum of all time-steps is used for all.
467	CALL pmci_synchronize
468	ENDIF
469
470	!
471	!-- Determine and print out the run control quantities before the first time
472	!-- step of this run. For the initial run, some statistics (e.g. divergence)
473	!-- need to be determined first.
474	IF ( simulated_time == 0.0_wp ) CALL flow_statistics
475	CALL run_control
476
477	!
478	!-- Data exchange between coupled models in case that a call has been omitted
479	!-- at the end of the previous run of a job chain.
480	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled .AND. .NOT. vnested) THEN
481	!
482	!-- In case of model termination initiated by the local model the coupler
483	!-- must not be called because this would again cause an MPI hang.
484	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
485	CALL surface_coupler
486	time_coupling = time_coupling - dt_coupling
487	ENDDO
488	IF (time_coupling == 0.0_wp .AND. &
489	time_since_reference_point < dt_coupling ) &
490	THEN
491	time_coupling = time_since_reference_point
492	ENDIF
493	ENDIF
494
495	#if defined( __dvrp_graphics )
496	!
497	!-- Time measurement with dvrp software
498	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
499	#endif
500
501	CALL location_message( 'starting timestep-sequence', .TRUE. )
502	!
503	!-- Start of the time loop
504	DO WHILE ( simulated_time < end_time .AND. .NOT. stop_dt .AND. &
505	.NOT. terminate_run )
506
507	CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
508	!
509	!-- Vertical nesting: initialize fine grid
510	IF ( vnested ) THEN
511	IF ( .NOT. vnest_init .AND. simulated_time >= vnest_start_time ) THEN
512	CALL cpu_log( log_point(80), 'vnest_init', 'start' )
513	CALL vnest_init_fine
514	vnest_init = .TRUE.
515	CALL cpu_log( log_point(80), 'vnest_init', 'stop' )
516	ENDIF
517	ENDIF
518	!
519	!-- Determine ug, vg and w_subs in dependence on data from external file
520	!-- LSF_DATA
521	IF ( large_scale_forcing .AND. lsf_vert ) THEN
522	CALL ls_forcing_vert ( simulated_time )
523	sums_ls_l = 0.0_wp
524	ENDIF
525
526	!
527	!-- Set pt_init and q_init to the current profiles taken from
528	!-- NUDGING_DATA
529	IF ( nudging ) THEN
530	CALL nudge_ref ( simulated_time )
531	!
532	!-- Store temperature gradient at the top boundary for possible Neumann
533	!-- boundary condition
534	bc_pt_t_val = ( pt_init(nzt+1) - pt_init(nzt) ) / dzu(nzt+1)
535	bc_q_t_val = ( q_init(nzt+1) - q_init(nzt) ) / dzu(nzt+1)
536	ENDIF
537	!
538	!-- If forcing by larger-scale models is applied, check if new data
539	!-- at domain boundaries need to be read.
540	IF ( forcing ) THEN
541	IF ( force%time(force%tind_p) <= simulated_time ) &
542	CALL netcdf_data_input_lsf
543	ENDIF
544
545	!
546	!-- Execute the user-defined actions
547	CALL user_actions( 'before_timestep' )
548
549	!
550	!-- Calculate forces by wind turbines
551	IF ( wind_turbine ) THEN
552
553	CALL cpu_log( log_point(55), 'wind_turbine', 'start' )
554
555	CALL wtm_forces
556
557	CALL cpu_log( log_point(55), 'wind_turbine', 'stop' )
558
559	ENDIF
560
561	!
562	!-- Start of intermediate step loop
563	intermediate_timestep_count = 0
564	DO WHILE ( intermediate_timestep_count < &
565	intermediate_timestep_count_max )
566
567	intermediate_timestep_count = intermediate_timestep_count + 1
568
569	!
570	!-- Set the steering factors for the prognostic equations which depend
571	!-- on the timestep scheme
572	CALL timestep_scheme_steering
573
574	!
575	!-- Calculate those variables needed in the tendency terms which need
576	!-- global communication
577	IF ( .NOT. use_single_reference_value .AND. &
578	.NOT. use_initial_profile_as_reference ) THEN
579	!
580	!-- Horizontally averaged profiles to be used as reference state in
581	!-- buoyancy terms (WARNING: only the respective last call of
582	!-- calc_mean_profile defines the reference state!)
583	IF ( .NOT. neutral ) THEN
584	CALL calc_mean_profile( pt, 4 )
585	ref_state(:) = hom(:,1,4,0) ! this is used in the buoyancy term
586	ENDIF
587	IF ( ocean ) THEN
588	CALL calc_mean_profile( rho_ocean, 64 )
589	ref_state(:) = hom(:,1,64,0)
590	ENDIF
591	IF ( humidity ) THEN
592	CALL calc_mean_profile( vpt, 44 )
593	ref_state(:) = hom(:,1,44,0)
594	ENDIF
595	!
596	!-- Assure that ref_state does not become zero at any level
597	!-- ( might be the case if a vertical level is completely occupied
598	!-- with topography ).
599	ref_state = MERGE( MAXVAL(ref_state), ref_state, &
600	ref_state == 0.0_wp )
601	ENDIF
602
603	IF ( .NOT. constant_diffusion ) CALL production_e_init
604	IF ( ( ws_scheme_mom .OR. ws_scheme_sca ) .AND. &
605	intermediate_timestep_count == 1 ) CALL ws_statistics
606	!
607	!-- In case of nudging calculate current nudging time scale and horizontal
608	!-- means of u, v, pt and q
609	IF ( nudging ) THEN
610	CALL calc_tnudge( simulated_time )
611	CALL calc_mean_profile( u, 1 )
612	CALL calc_mean_profile( v, 2 )
613	CALL calc_mean_profile( pt, 4 )
614	CALL calc_mean_profile( q, 41 )
615	ENDIF
616
617	!
618	!-- Solve the prognostic equations. A fast cache optimized version with
619	!-- only one single loop is used in case of Piascek-Williams advection
620	!-- scheme. NEC vector machines use a different version, because
621	!-- in the other versions a good vectorization is prohibited due to
622	!-- inlining problems.
623	IF ( loop_optimization == 'cache' ) THEN
624	CALL prognostic_equations_cache
625	ELSEIF ( loop_optimization == 'vector' ) THEN
626	CALL prognostic_equations_vector
627	ENDIF
628
629	!
630	!-- Particle transport/physics with the Lagrangian particle model
631	!-- (only once during intermediate steps, because it uses an Euler-step)
632	!-- ### particle model should be moved before prognostic_equations, in order
633	!-- to regard droplet interactions directly
634	IF ( particle_advection .AND. &
635	simulated_time >= particle_advection_start .AND. &
636	intermediate_timestep_count == 1 ) THEN
637	CALL lpm
638	first_call_lpm = .FALSE.
639	ENDIF
640
641	!
642	!-- Interaction of droplets with temperature and specific humidity.
643	!-- Droplet condensation and evaporation is calculated within
644	!-- advec_particles.
645	IF ( cloud_droplets .AND. &
646	intermediate_timestep_count == intermediate_timestep_count_max )&
647	THEN
648	CALL interaction_droplets_ptq
649	ENDIF
650
651	!
652	!-- Exchange of ghost points (lateral boundary conditions)
653	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
654
655	CALL exchange_horiz( u_p, nbgp )
656	CALL exchange_horiz( v_p, nbgp )
657	CALL exchange_horiz( w_p, nbgp )
658	CALL exchange_horiz( pt_p, nbgp )
659	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
660	IF ( rans_tke_e .OR. wang_kernel .OR. collision_turbulence &
661	.OR. use_sgs_for_particles ) THEN
662	IF ( rans_tke_e ) THEN
663	CALL exchange_horiz( diss_p, nbgp )
664	ELSE
665	CALL exchange_horiz( diss, nbgp )
666	ENDIF
667	ENDIF
668	IF ( ocean ) THEN
669	CALL exchange_horiz( sa_p, nbgp )
670	CALL exchange_horiz( rho_ocean, nbgp )
671	CALL exchange_horiz( prho, nbgp )
672	ENDIF
673	IF ( humidity ) THEN
674	CALL exchange_horiz( q_p, nbgp )
675	IF ( cloud_physics .AND. microphysics_morrison ) THEN
676	CALL exchange_horiz( qc_p, nbgp )
677	CALL exchange_horiz( nc_p, nbgp )
678	ENDIF
679	IF ( cloud_physics .AND. microphysics_seifert ) THEN
680	CALL exchange_horiz( qr_p, nbgp )
681	CALL exchange_horiz( nr_p, nbgp )
682	ENDIF
683	ENDIF
684	IF ( cloud_droplets ) THEN
685	CALL exchange_horiz( ql, nbgp )
686	CALL exchange_horiz( ql_c, nbgp )
687	CALL exchange_horiz( ql_v, nbgp )
688	CALL exchange_horiz( ql_vp, nbgp )
689	ENDIF
690	IF ( passive_scalar ) CALL exchange_horiz( s_p, nbgp )
691	#if defined( __chem )
692	IF ( air_chemistry ) THEN
693	DO n = 1, nspec
694	CALL exchange_horiz( chem_species(n)%conc_p, nbgp )
695	ENDDO
696	ENDIF
697	#endif
698	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
699
700	!
701	!-- Boundary conditions for the prognostic quantities (except of the
702	!-- velocities at the outflow in case of a non-cyclic lateral wall)
703	CALL boundary_conds
704	!
705	!-- Swap the time levels in preparation for the next time step.
706	CALL swap_timelevel
707
708	!
709	!-- Vertical nesting: Interpolate fine grid data to the coarse grid
710	IF ( vnest_init ) THEN
711	CALL cpu_log( log_point(81), 'vnest_anterpolate', 'start' )
712	CALL vnest_anterpolate
713	CALL cpu_log( log_point(81), 'vnest_anterpolate', 'stop' )
714	ENDIF
715
716	IF ( nested_run ) THEN
717
718	CALL cpu_log( log_point(60), 'nesting', 'start' )
719	!
720	!-- Domain nesting. The data transfer subroutines pmci_parent_datatrans
721	!-- and pmci_child_datatrans are called inside the wrapper
722	!-- subroutine pmci_datatrans according to the control parameters
723	!-- nesting_mode and nesting_datatransfer_mode.
724	!-- TO_DO: why is nesting_mode given as a parameter here?
725	CALL pmci_datatrans( nesting_mode )
726
727	IF ( TRIM( nesting_mode ) == 'two-way' .OR. &
728	nesting_mode == 'vertical' ) THEN
729	!
730	!-- Exchange_horiz is needed for all parent-domains after the
731	!-- anterpolation
732	CALL exchange_horiz( u, nbgp )
733	CALL exchange_horiz( v, nbgp )
734	CALL exchange_horiz( w, nbgp )
735	IF ( .NOT. neutral ) CALL exchange_horiz( pt, nbgp )
736
737	IF ( humidity ) THEN
738
739	CALL exchange_horiz( q, nbgp )
740
741	IF ( cloud_physics .AND. microphysics_morrison ) THEN
742	CALL exchange_horiz( qc, nbgp )
743	CALL exchange_horiz( nc, nbgp )
744	ENDIF
745	IF ( cloud_physics .AND. microphysics_seifert ) THEN
746	CALL exchange_horiz( qr, nbgp )
747	CALL exchange_horiz( nr, nbgp )
748	ENDIF
749
750	ENDIF
751
752	IF ( passive_scalar ) CALL exchange_horiz( s, nbgp )
753	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e, nbgp )
754	ENDIF
755	!
756	!-- Set boundary conditions again after interpolation and anterpolation.
757	CALL pmci_boundary_conds
758	!
759	!-- Correct the w top-BC in nest domains to ensure mass conservation.
760	!-- This action must never be done for the root domain. Vertical
761	!-- nesting implies mass conservation.
762	IF ( nest_domain ) THEN
763	CALL pmci_ensure_nest_mass_conservation
764	ENDIF
765
766	CALL cpu_log( log_point(60), 'nesting', 'stop' )
767
768	ENDIF
769
770	!
771	!-- Temperature offset must be imposed at cyclic boundaries in x-direction
772	!-- when a sloping surface is used
773	IF ( sloping_surface ) THEN
774	IF ( nxl == 0 ) pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - &
775	pt_slope_offset
776	IF ( nxr == nx ) pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + &
777	pt_slope_offset
778	ENDIF
779
780	!
781	!-- Impose a turbulent inflow using the recycling method
782	IF ( turbulent_inflow ) CALL inflow_turbulence
783
784	!
785	!-- Impose a turbulent inflow using synthetic generated turbulence
786	IF ( use_synthetic_turbulence_generator ) THEN
787	CALL stg_main
788	ENDIF
789
790	!
791	!-- Set values at outflow boundary using the special outflow condition
792	IF ( turbulent_outflow ) CALL outflow_turbulence
793
794	!
795	!-- Impose a random perturbation on the horizontal velocity field
796	IF ( create_disturbances .AND. &
797	( call_psolver_at_all_substeps .AND. &
798	intermediate_timestep_count == intermediate_timestep_count_max )&
799	.OR. ( .NOT. call_psolver_at_all_substeps .AND. &
800	intermediate_timestep_count == 1 ) ) &
801	THEN
802	time_disturb = time_disturb + dt_3d
803	IF ( time_disturb >= dt_disturb ) THEN
804	IF ( disturbance_energy_limit /= 0.0_wp .AND. &
805	hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit ) THEN
806	CALL disturb_field( 'u', tend, u )
807	CALL disturb_field( 'v', tend, v )
808	ELSEIF ( ( .NOT. bc_lr_cyc .OR. .NOT. bc_ns_cyc ) &
809	.AND. .NOT. nest_domain .AND. .NOT. forcing ) THEN
810	!
811	!-- Runs with a non-cyclic lateral wall need perturbations
812	!-- near the inflow throughout the whole simulation
813	dist_range = 1
814	CALL disturb_field( 'u', tend, u )
815	CALL disturb_field( 'v', tend, v )
816	dist_range = 0
817	ENDIF
818	time_disturb = time_disturb - dt_disturb
819	ENDIF
820	ENDIF
821
822	!
823	!-- Map forcing data derived from larger scale model onto domain
824	!-- boundaries.
825	IF ( forcing .AND. intermediate_timestep_count == &
826	intermediate_timestep_count_max ) THEN
827	CALL forcing_bc
828	ENDIF
829	!
830	!-- Moreover, ensure mass conservation at each RK substep.
831	IF ( forcing ) CALL forcing_bc_mass_conservation
832
833	!
834	!-- Reduce the velocity divergence via the equation for perturbation
835	!-- pressure.
836	IF ( intermediate_timestep_count == 1 .OR. &
837	call_psolver_at_all_substeps ) THEN
838
839	IF ( vnest_init ) THEN
840	!
841	!-- Compute pressure in the CG, interpolate top boundary conditions
842	!-- to the FG and then compute pressure in the FG
843	IF ( coupling_mode == 'vnested_crse' ) CALL pres
844
845	CALL cpu_log( log_point(82), 'vnest_bc', 'start' )
846	CALL vnest_boundary_conds
847	CALL cpu_log( log_point(82), 'vnest_bc', 'stop' )
848
849	IF ( coupling_mode == 'vnested_fine' ) CALL pres
850
851	!-- Anterpolate TKE, satisfy Germano Identity
852	CALL cpu_log( log_point(83), 'vnest_anter_e', 'start' )
853	CALL vnest_anterpolate_e
854	CALL cpu_log( log_point(83), 'vnest_anter_e', 'stop' )
855
856	ELSE
857
858	CALL pres
859
860	ENDIF
861
862	ENDIF
863
864	!
865	!-- If required, compute liquid water content
866	IF ( cloud_physics ) THEN
867	CALL calc_liquid_water_content
868	ENDIF
869	!
870	!-- If required, compute virtual potential temperature
871	IF ( humidity ) THEN
872	CALL compute_vpt
873	ENDIF
874
875	!
876	!-- Compute the diffusion quantities
877	IF ( .NOT. constant_diffusion ) THEN
878
879	!
880	!-- Determine surface fluxes shf and qsws and surface values
881	!-- pt_surface and q_surface in dependence on data from external
882	!-- file LSF_DATA respectively
883	IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
884	intermediate_timestep_count == intermediate_timestep_count_max )&
885	THEN
886	CALL ls_forcing_surf( simulated_time )
887	ENDIF
888
889	!
890	!-- First the vertical (and horizontal) fluxes in the surface
891	!-- (constant flux) layer are computed
892	IF ( constant_flux_layer ) THEN
893	CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'start' )
894	CALL surface_layer_fluxes
895	CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'stop' )
896	ENDIF
897	!
898	!-- If required, solve the energy balance for the surface and run soil
899	!-- model. Call for horizontal as well as vertical surfaces
900	IF ( land_surface .AND. time_since_reference_point >= skip_time_do_lsm) THEN
901
902	CALL cpu_log( log_point(54), 'land_surface', 'start' )
903	!
904	!-- Call for horizontal upward-facing surfaces
905	CALL lsm_energy_balance( .TRUE., -1 )
906	CALL lsm_soil_model( .TRUE., -1, .TRUE. )
907	!
908	!-- Call for northward-facing surfaces
909	CALL lsm_energy_balance( .FALSE., 0 )
910	CALL lsm_soil_model( .FALSE., 0, .TRUE. )
911	!
912	!-- Call for southward-facing surfaces
913	CALL lsm_energy_balance( .FALSE., 1 )
914	CALL lsm_soil_model( .FALSE., 1, .TRUE. )
915	!
916	!-- Call for eastward-facing surfaces
917	CALL lsm_energy_balance( .FALSE., 2 )
918	CALL lsm_soil_model( .FALSE., 2, .TRUE. )
919	!
920	!-- Call for westward-facing surfaces
921	CALL lsm_energy_balance( .FALSE., 3 )
922	CALL lsm_soil_model( .FALSE., 3, .TRUE. )
923	!
924	!-- At the end, set boundary conditons for potential temperature
925	!-- and humidity after running the land-surface model. This
926	!-- might be important for the nesting, where arrays are transfered.
927	CALL lsm_boundary_condition
928
929	CALL cpu_log( log_point(54), 'land_surface', 'stop' )
930	ENDIF
931	!
932	!-- If required, solve the energy balance for urban surfaces and run
933	!-- the material heat model
934	IF (urban_surface) THEN
935	CALL cpu_log( log_point(74), 'urban_surface', 'start' )
936	CALL usm_surface_energy_balance
937	IF ( usm_material_model ) THEN
938	CALL usm_green_heat_model
939	CALL usm_material_heat_model
940	ENDIF
941
942	CALL usm_temperature_near_surface
943	!
944	!-- At the end, set boundary conditons for potential temperature
945	!-- and humidity after running the urban-surface model. This
946	!-- might be important for the nesting, where arrays are transfered.
947	CALL usm_boundary_condition
948
949	CALL cpu_log( log_point(74), 'urban_surface', 'stop' )
950	ENDIF
951	!
952	!-- Compute the diffusion coefficients
953	CALL cpu_log( log_point(17), 'diffusivities', 'start' )
954	IF ( .NOT. humidity ) THEN
955	IF ( ocean ) THEN
956	CALL tcm_diffusivities( prho, prho_reference )
957	ELSE
958	CALL tcm_diffusivities( pt, pt_reference )
959	ENDIF
960	ELSE
961	CALL tcm_diffusivities( vpt, pt_reference )
962	ENDIF
963	CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
964	!
965	!-- Vertical nesting: set fine grid eddy viscosity top boundary condition
966	IF ( vnest_init ) CALL vnest_boundary_conds_khkm
967
968	ENDIF
969
970	!
971	!-- If required, calculate radiative fluxes and heating rates
972	IF ( radiation .AND. intermediate_timestep_count &
973	== intermediate_timestep_count_max .AND. time_since_reference_point > &
974	skip_time_do_radiation ) THEN
975
976	time_radiation = time_radiation + dt_3d
977
978	IF ( time_radiation >= dt_radiation .OR. force_radiation_call ) &
979	THEN
980
981	CALL cpu_log( log_point(50), 'radiation', 'start' )
982
983	IF ( .NOT. force_radiation_call ) THEN
984	time_radiation = time_radiation - dt_radiation
985	ENDIF
986
987	CALL radiation_control
988
989	CALL cpu_log( log_point(50), 'radiation', 'stop' )
990
991	IF ( urban_surface .OR. land_surface .AND. &
992	radiation_interactions ) THEN
993	CALL cpu_log( log_point(75), 'radiation_interaction', 'start' )
994	CALL radiation_interaction
995	CALL cpu_log( log_point(75), 'radiation_interaction', 'stop' )
996	ENDIF
997
998	ENDIF
999	ENDIF
1000
1001	ENDDO ! Intermediate step loop
1002	!
1003	!-- If required, consider chemical emissions
1004	!-- (todo (FK): Implement hourly call of emissions, using time_utc from
1005	!-- data_and_time_mod.f90;
1006	!-- move the CALL to appropriate location)
1007	! #if defined( __chem )
1008	! IF ( air_chemistry ) THEN
1009	! CALL chem_emissions
1010	! ENDIF
1011	! #endif
1012	!
1013	!-- If required, do UV exposure calculations
1014	IF ( uv_exposure ) THEN
1015	CALL uvem_calc_exposure
1016	ENDIF
1017	!
1018	!-- Increase simulation time and output times
1019	nr_timesteps_this_run = nr_timesteps_this_run + 1
1020	current_timestep_number = current_timestep_number + 1
1021	simulated_time = simulated_time + dt_3d
1022	simulated_time_chr = time_to_string( simulated_time )
1023	time_since_reference_point = simulated_time - coupling_start_time
1024
1025
1026
1027	IF ( simulated_time >= skip_time_data_output_av ) THEN
1028	time_do_av = time_do_av + dt_3d
1029	ENDIF
1030	IF ( simulated_time >= skip_time_do2d_xy ) THEN
1031	time_do2d_xy = time_do2d_xy + dt_3d
1032	ENDIF
1033	IF ( simulated_time >= skip_time_do2d_xz ) THEN
1034	time_do2d_xz = time_do2d_xz + dt_3d
1035	ENDIF
1036	IF ( simulated_time >= skip_time_do2d_yz ) THEN
1037	time_do2d_yz = time_do2d_yz + dt_3d
1038	ENDIF
1039	IF ( simulated_time >= skip_time_do3d ) THEN
1040	time_do3d = time_do3d + dt_3d
1041	ENDIF
1042	DO mid = 1, masks
1043	IF ( simulated_time >= skip_time_domask(mid) ) THEN
1044	time_domask(mid)= time_domask(mid) + dt_3d
1045	ENDIF
1046	ENDDO
1047	time_dvrp = time_dvrp + dt_3d
1048	IF ( simulated_time >= skip_time_dosp ) THEN
1049	time_dosp = time_dosp + dt_3d
1050	ENDIF
1051	time_dots = time_dots + dt_3d
1052	IF ( .NOT. first_call_lpm ) THEN
1053	time_dopts = time_dopts + dt_3d
1054	ENDIF
1055	IF ( simulated_time >= skip_time_dopr ) THEN
1056	time_dopr = time_dopr + dt_3d
1057	ENDIF
1058	time_dopr_listing = time_dopr_listing + dt_3d
1059	time_run_control = time_run_control + dt_3d
1060
1061	!
1062	!-- Data exchange between coupled models
1063	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled &
1064	.AND. .NOT. vnested ) THEN
1065	time_coupling = time_coupling + dt_3d
1066
1067	!
1068	!-- In case of model termination initiated by the local model
1069	!-- (terminate_coupled > 0), the coupler must be skipped because it would
1070	!-- cause an MPI intercomminucation hang.
1071	!-- If necessary, the coupler will be called at the beginning of the
1072	!-- next restart run.
1073	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
1074	CALL surface_coupler
1075	time_coupling = time_coupling - dt_coupling
1076	ENDDO
1077	ENDIF
1078
1079	!
1080	!-- Execute user-defined actions
1081	CALL user_actions( 'after_integration' )
1082
1083	!
1084	!-- If Galilei transformation is used, determine the distance that the
1085	!-- model has moved so far
1086	IF ( galilei_transformation ) THEN
1087	advected_distance_x = advected_distance_x + u_gtrans * dt_3d
1088	advected_distance_y = advected_distance_y + v_gtrans * dt_3d
1089	ENDIF
1090
1091	!
1092	!-- Check, if restart is necessary (because cpu-time is expiring or
1093	!-- because it is forced by user) and set stop flag
1094	!-- This call is skipped if the remote model has already initiated a restart.
1095	IF ( .NOT. terminate_run ) CALL check_for_restart
1096
1097	!
1098	!-- Carry out statistical analysis and output at the requested output times.
1099	!-- The MOD function is used for calculating the output time counters (like
1100	!-- time_dopr) in order to regard a possible decrease of the output time
1101	!-- interval in case of restart runs
1102
1103	!
1104	!-- Set a flag indicating that so far no statistics have been created
1105	!-- for this time step
1106	flow_statistics_called = .FALSE.
1107
1108	!
1109	!-- If required, call flow_statistics for averaging in time
1110	IF ( averaging_interval_pr /= 0.0_wp .AND. &
1111	( dt_dopr - time_dopr ) <= averaging_interval_pr .AND. &
1112	simulated_time >= skip_time_dopr ) THEN
1113	time_dopr_av = time_dopr_av + dt_3d
1114	IF ( time_dopr_av >= dt_averaging_input_pr ) THEN
1115	do_sum = .TRUE.
1116	time_dopr_av = MOD( time_dopr_av, &
1117	MAX( dt_averaging_input_pr, dt_3d ) )
1118	ENDIF
1119	ENDIF
1120	IF ( do_sum ) CALL flow_statistics
1121
1122	!
1123	!-- Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
1124	IF ( averaging_interval /= 0.0_wp .AND. &
1125	( dt_data_output_av - time_do_av ) <= averaging_interval .AND. &
1126	simulated_time >= skip_time_data_output_av ) &
1127	THEN
1128	time_do_sla = time_do_sla + dt_3d
1129	IF ( time_do_sla >= dt_averaging_input ) THEN
1130	CALL sum_up_3d_data
1131	average_count_3d = average_count_3d + 1
1132	time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
1133	ENDIF
1134	ENDIF
1135
1136	!
1137	!-- Calculate spectra for time averaging
1138	IF ( averaging_interval_sp /= 0.0_wp .AND. &
1139	( dt_dosp - time_dosp ) <= averaging_interval_sp .AND. &
1140	simulated_time >= skip_time_dosp ) THEN
1141	time_dosp_av = time_dosp_av + dt_3d
1142	IF ( time_dosp_av >= dt_averaging_input_pr ) THEN
1143	CALL calc_spectra
1144	time_dosp_av = MOD( time_dosp_av, &
1145	MAX( dt_averaging_input_pr, dt_3d ) )
1146	ENDIF
1147	ENDIF
1148
1149	!
1150	!-- Call flight module and output data
1151	IF ( virtual_flight ) THEN
1152	CALL flight_measurement
1153	CALL data_output_flight
1154	ENDIF
1155
1156	!
1157	!-- Profile output (ASCII) on file
1158	IF ( time_dopr_listing >= dt_dopr_listing ) THEN
1159	CALL print_1d
1160	time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, &
1161	dt_3d ) )
1162	ENDIF
1163
1164	!
1165	!-- Graphic output for PROFIL
1166	IF ( time_dopr >= dt_dopr ) THEN
1167	IF ( dopr_n /= 0 ) CALL data_output_profiles
1168	time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
1169	time_dopr_av = 0.0_wp ! due to averaging (see above)
1170	ENDIF
1171
1172	!
1173	!-- Graphic output for time series
1174	IF ( time_dots >= dt_dots ) THEN
1175	CALL data_output_tseries
1176	time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
1177	ENDIF
1178
1179	!
1180	!-- Output of spectra (formatted for use with PROFIL), in case of no
1181	!-- time averaging, spectra has to be calculated before
1182	IF ( time_dosp >= dt_dosp ) THEN
1183	IF ( average_count_sp == 0 ) CALL calc_spectra
1184	CALL data_output_spectra
1185	time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
1186	ENDIF
1187
1188	!
1189	!-- 2d-data output (cross-sections)
1190	IF ( time_do2d_xy >= dt_do2d_xy ) THEN
1191	CALL data_output_2d( 'xy', 0 )
1192	time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
1193	ENDIF
1194	IF ( time_do2d_xz >= dt_do2d_xz ) THEN
1195	CALL data_output_2d( 'xz', 0 )
1196	time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
1197	ENDIF
1198	IF ( time_do2d_yz >= dt_do2d_yz ) THEN
1199	CALL data_output_2d( 'yz', 0 )
1200	time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
1201	ENDIF
1202
1203	!
1204	!-- 3d-data output (volume data)
1205	IF ( time_do3d >= dt_do3d ) THEN
1206	CALL data_output_3d( 0 )
1207	time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
1208	ENDIF
1209
1210	!
1211	!-- Masked data output
1212	DO mid = 1, masks
1213	IF ( time_domask(mid) >= dt_domask(mid) ) THEN
1214	CALL data_output_mask( 0 )
1215	time_domask(mid) = MOD( time_domask(mid), &
1216	MAX( dt_domask(mid), dt_3d ) )
1217	ENDIF
1218	ENDDO
1219
1220	!
1221	!-- Output of time-averaged 2d/3d/masked data
1222	IF ( time_do_av >= dt_data_output_av ) THEN
1223	CALL average_3d_data
1224	CALL data_output_2d( 'xy', 1 )
1225	CALL data_output_2d( 'xz', 1 )
1226	CALL data_output_2d( 'yz', 1 )
1227	CALL data_output_3d( 1 )
1228	DO mid = 1, masks
1229	CALL data_output_mask( 1 )
1230	ENDDO
1231	time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
1232	ENDIF
1233
1234	!
1235	!-- Output of particle time series
1236	IF ( particle_advection ) THEN
1237	IF ( time_dopts >= dt_dopts .OR. &
1238	( simulated_time >= particle_advection_start .AND. &
1239	first_call_lpm ) ) THEN
1240	CALL data_output_ptseries
1241	time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
1242	ENDIF
1243	ENDIF
1244
1245	!
1246	!-- Output of dvrp-graphics (isosurface, particles, slicer)
1247	#if defined( __dvrp_graphics )
1248	CALL DVRP_LOG_EVENT( -2, current_timestep_number-1 )
1249	#endif
1250	IF ( time_dvrp >= dt_dvrp ) THEN
1251	CALL data_output_dvrp
1252	time_dvrp = MOD( time_dvrp, MAX( dt_dvrp, dt_3d ) )
1253	ENDIF
1254	#if defined( __dvrp_graphics )
1255	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
1256	#endif
1257
1258	!
1259	!-- If required, set the heat flux for the next time step at a random value
1260	IF ( constant_heatflux .AND. random_heatflux ) THEN
1261	IF ( surf_def_h(0)%ns >= 1 ) CALL disturb_heatflux( surf_def_h(0) )
1262	IF ( surf_lsm_h%ns >= 1 ) CALL disturb_heatflux( surf_lsm_h )
1263	IF ( surf_usm_h%ns >= 1 ) CALL disturb_heatflux( surf_usm_h )
1264	ENDIF
1265
1266	!
1267	!-- Execute user-defined actions
1268	CALL user_actions( 'after_timestep' )
1269
1270	!
1271	!-- Determine size of next time step. Save timestep dt_3d because it is
1272	!-- newly calculated in routine timestep, but required further below for
1273	!-- steering the run control output interval
1274	dt_3d_old = dt_3d
1275	CALL timestep
1276
1277	!
1278	!-- Synchronize the timestep in case of nested run.
1279	IF ( nested_run ) THEN
1280	!
1281	!-- Synchronize by unifying the time step.
1282	!-- Global minimum of all time-steps is used for all.
1283	CALL pmci_synchronize
1284	ENDIF
1285
1286	!
1287	!-- Computation and output of run control parameters.
1288	!-- This is also done whenever perturbations have been imposed
1289	IF ( time_run_control >= dt_run_control .OR. &
1290	timestep_scheme(1:5) /= 'runge' .OR. disturbance_created ) &
1291	THEN
1292	CALL run_control
1293	IF ( time_run_control >= dt_run_control ) THEN
1294	time_run_control = MOD( time_run_control, &
1295	MAX( dt_run_control, dt_3d_old ) )
1296	ENDIF
1297	ENDIF
1298
1299	!
1300	!-- Output elapsed simulated time in form of a progress bar on stdout
1301	IF ( myid == 0 ) CALL output_progress_bar
1302
1303	CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
1304
1305
1306	ENDDO ! time loop
1307
1308	!-- Vertical nesting: Deallocate variables initialized for vertical nesting
1309	IF ( vnest_init ) CALL vnest_deallocate
1310
1311	IF ( myid == 0 ) CALL finish_progress_bar
1312
1313	#if defined( __dvrp_graphics )
1314	CALL DVRP_LOG_EVENT( -2, current_timestep_number )
1315	#endif
1316
1317	CALL location_message( 'finished time-stepping', .TRUE. )
1318
1319	END SUBROUTINE time_integration

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