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source: palm/trunk/SOURCE/time_integration.f90 @ 1375

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1	SUBROUTINE time_integration
2
3	!--------------------------------------------------------------------------------!
4	! This file is part of PALM.
5	!
6	! PALM is free software: you can redistribute it and/or modify it under the terms
7	! of the GNU General Public License as published by the Free Software Foundation,
8	! either version 3 of the License, or (at your option) any later 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 1997-2014 Leibniz Universitaet Hannover
18	!--------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! ------------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: time_integration.f90 1366 2014-04-22 15:06:33Z raasch $
27	!
28	! 1365 2014-04-22 15:03:56Z boeske
29	! Reset sums_ls_l to zero at each timestep
30	! +sums_ls_l
31	! Calculation of reference state (previously in subroutine calc_mean_profile)
32
33	! 1342 2014-03-26 17:04:47Z kanani
34	! REAL constants defined as wp-kind
35	!
36	! 1320 2014-03-20 08:40:49Z raasch
37	! ONLY-attribute added to USE-statements,
38	! kind-parameters added to all INTEGER and REAL declaration statements,
39	! kinds are defined in new module kinds,
40	! old module precision_kind is removed,
41	! revision history before 2012 removed,
42	! comment fields (!:) to be used for variable explanations added to
43	! all variable declaration statements
44	! 1318 2014-03-17 13:35:16Z raasch
45	! module interfaces removed
46	!
47	! 1308 2014-03-13 14:58:42Z fricke
48	! +netcdf_data_format_save
49	! For masked data, parallel netcdf output is not tested so far, hence
50	! netcdf_data_format is switched back to non-paralell output.
51	!
52	! 1276 2014-01-15 13:40:41Z heinze
53	! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars
54	!
55	! 1257 2013-11-08 15:18:40Z raasch
56	! acc-update-host directive for timestep removed
57	!
58	! 1241 2013-10-30 11:36:58Z heinze
59	! Generalize calc_mean_profile for wider use
60	! Determine shf and qsws in dependence on data from LSF_DATA
61	! Determine ug and vg in dependence on data from LSF_DATA
62	! 1221 2013-09-10 08:59:13Z raasch
63	! host update of arrays before timestep is called
64	!
65	! 1179 2013-06-14 05:57:58Z raasch
66	! mean profiles for reference state are only calculated if required,
67	! small bugfix for background communication
68	!
69	! 1171 2013-05-30 11:27:45Z raasch
70	! split of prognostic_equations deactivated (comment lines), for the time being
71	!
72	! 1128 2013-04-12 06:19:32Z raasch
73	! asynchronous transfer of ghost point data realized for acc-optimized version:
74	! prognostic_equations are first called two times for those points required for
75	! the left-right and north-south exchange, respectively, and then for the
76	! remaining points,
77	! those parts requiring global communication moved from prognostic_equations to
78	! here
79	!
80	! 1115 2013-03-26 18:16:16Z hoffmann
81	! calculation of qr and nr is restricted to precipitation
82	!
83	! 1113 2013-03-10 02:48:14Z raasch
84	! GPU-porting of boundary conditions,
85	! openACC directives updated
86	! formal parameter removed from routine boundary_conds
87	!
88	! 1111 2013-03-08 23:54:10Z raasch
89	! +internal timestep counter for cpu statistics added,
90	! openACC directives updated
91	!
92	! 1092 2013-02-02 11:24:22Z raasch
93	! unused variables removed
94	!
95	! 1065 2012-11-22 17:42:36Z hoffmann
96	! exchange of diss (dissipation rate) in case of turbulence = .TRUE. added
97	!
98	! 1053 2012-11-13 17:11:03Z hoffmann
99	! exchange of ghost points for nr, qr added
100	!
101	! 1036 2012-10-22 13:43:42Z raasch
102	! code put under GPL (PALM 3.9)
103	!
104	! 1019 2012-09-28 06:46:45Z raasch
105	! non-optimized version of prognostic_equations removed
106	!
107	! 1015 2012-09-27 09:23:24Z raasch
108	! +call of prognostic_equations_acc
109	!
110	! 1001 2012-09-13 14:08:46Z raasch
111	! all actions concerning leapfrog- and upstream-spline-scheme removed
112	!
113	! 849 2012-03-15 10:35:09Z raasch
114	! advec_particles renamed lpm, first_call_advec_particles renamed first_call_lpm
115	!
116	! 825 2012-02-19 03:03:44Z raasch
117	! wang_collision_kernel renamed wang_kernel
118	!
119	! Revision 1.1 1997/08/11 06:19:04 raasch
120	! Initial revision
121	!
122	!
123	! Description:
124	! ------------
125	! Integration in time of the model equations, statistical analysis and graphic
126	! output
127	!------------------------------------------------------------------------------!
128
129	USE advec_ws, &
130	ONLY: ws_statistics
131
132	USE arrays_3d, &
133	ONLY: diss, e_p, nr_p, prho, pt, pt_p, q, ql, ql_c, ql_v, ql_vp, qr_p,&
134	q_p, ref_state, rho, sa_p, tend, u, u_p, v, vpt, v_p, w_p
135
136	USE calc_mean_profile_mod, &
137	ONLY: calc_mean_profile
138
139	USE control_parameters, &
140	ONLY: advected_distance_x, advected_distance_y, average_count_3d, &
141	average_count_sp, averaging_interval, averaging_interval_pr, &
142	averaging_interval_sp, bc_lr_cyc, bc_ns_cyc, &
143	call_psolver_at_all_substeps, cloud_droplets, cloud_physics, &
144	constant_heatflux, create_disturbances, dopr_n, &
145	constant_diffusion, coupling_mode, coupling_start_time, &
146	current_timestep_number, disturbance_created, &
147	disturbance_energy_limit, dist_range, do_sum, dt_3d, &
148	dt_averaging_input, dt_averaging_input_pr, dt_coupling, &
149	dt_data_output_av, dt_disturb, dt_do2d_xy, dt_do2d_xz, &
150	dt_do2d_yz, dt_do3d, dt_domask,dt_dopts, dt_dopr, &
151	dt_dopr_listing, dt_dosp, dt_dots, dt_dvrp, dt_run_control, &
152	end_time, first_call_lpm, galilei_transformation, humidity, &
153	icloud_scheme, intermediate_timestep_count, &
154	intermediate_timestep_count_max, large_scale_forcing, &
155	loop_optimization, lsf_surf, lsf_vert, masks, mid, &
156	netcdf_data_format, neutral, nr_timesteps_this_run, nudging, &
157	ocean, on_device, passive_scalar, prandtl_layer, precipitation, &
158	prho_reference, pt_reference, pt_slope_offset, random_heatflux, &
159	run_coupled, simulated_time, simulated_time_chr, &
160	skip_time_do2d_xy, skip_time_do2d_xz, skip_time_do2d_yz, &
161	skip_time_do3d, skip_time_domask, skip_time_dopr, &
162	skip_time_dosp, skip_time_data_output_av, sloping_surface, &
163	stop_dt, terminate_coupled, terminate_run, timestep_scheme, &
164	time_coupling, time_do2d_xy, time_do2d_xz, time_do2d_yz, &
165	time_do3d, time_domask, time_dopr, time_dopr_av, &
166	time_dopr_listing, time_dopts, time_dosp, time_dosp_av, &
167	time_dots, time_do_av, time_do_sla, time_disturb, time_dvrp, &
168	time_run_control, time_since_reference_point, turbulence, &
169	turbulent_inflow, use_initial_profile_as_reference, &
170	use_single_reference_value, u_gtrans, v_gtrans, ws_scheme_mom, &
171	ws_scheme_sca
172
173	USE cpulog, &
174	ONLY: cpu_log, log_point, log_point_s
175
176	USE indices, &
177	ONLY: i_left, i_right, j_north, j_south, nbgp, nx, nxl, nxlg, nxr, &
178	nxrg, nyn, nys, nzb, nzb_u_inner, nzb_v_inner
179
180	USE interaction_droplets_ptq_mod, &
181	ONLY: interaction_droplets_ptq
182
183	USE kinds
184
185	USE ls_forcing_mod, &
186	ONLY: ls_forcing_surf, ls_forcing_vert
187
188	USE nudge_mod, &
189	ONLY: calc_tnudge
190
191	USE particle_attributes, &
192	ONLY: particle_advection, particle_advection_start, wang_kernel
193
194	USE pegrid
195
196	USE production_e_mod, &
197	ONLY: production_e_init
198
199	USE prognostic_equations_mod, &
200	ONLY: prognostic_equations_acc, prognostic_equations_cache, &
201	prognostic_equations_vector
202
203	USE statistics, &
204	ONLY: flow_statistics_called, hom, pr_palm, sums_ls_l
205
206	USE user_actions_mod, &
207	ONLY: user_actions
208
209	IMPLICIT NONE
210
211	CHARACTER (LEN=9) :: time_to_string !:
212
213	INTEGER(iwp) :: netcdf_data_format_save !:
214
215	!
216	!-- At the beginning of a simulation determine the time step as well as
217	!-- determine and print out the run control parameters
218	IF ( simulated_time == 0.0_wp ) CALL timestep
219
220	CALL run_control
221
222
223	!
224	!-- Data exchange between coupled models in case that a call has been omitted
225	!-- at the end of the previous run of a job chain.
226	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
227	!
228	!-- In case of model termination initiated by the local model the coupler
229	!-- must not be called because this would again cause an MPI hang.
230	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
231	CALL surface_coupler
232	time_coupling = time_coupling - dt_coupling
233	ENDDO
234	IF (time_coupling == 0.0_wp .AND. time_since_reference_point < dt_coupling)&
235	THEN
236	time_coupling = time_since_reference_point
237	ENDIF
238	ENDIF
239
240
241	#if defined( __dvrp_graphics )
242	!
243	!-- Time measurement with dvrp software
244	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
245	#endif
246
247	!
248	!-- Start of the time loop
249	DO WHILE ( simulated_time < end_time .AND. .NOT. stop_dt .AND. &
250	.NOT. terminate_run )
251
252	CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
253
254	!
255	!-- Determine size of next time step
256	IF ( simulated_time /= 0.0_wp ) THEN
257	CALL timestep
258	ENDIF
259
260	!
261	!-- Determine ug, vg and w_subs in dependence on data from external file
262	!-- LSF_DATA
263	IF ( large_scale_forcing .AND. lsf_vert ) THEN
264	CALL ls_forcing_vert ( simulated_time )
265	sums_ls_l = 0.0_wp
266	ENDIF
267
268	!
269	!-- Execute the user-defined actions
270	CALL user_actions( 'before_timestep' )
271
272	!
273	!-- Start of intermediate step loop
274	intermediate_timestep_count = 0
275	DO WHILE ( intermediate_timestep_count < &
276	intermediate_timestep_count_max )
277
278	intermediate_timestep_count = intermediate_timestep_count + 1
279
280	!
281	!-- Set the steering factors for the prognostic equations which depend
282	!-- on the timestep scheme
283	CALL timestep_scheme_steering
284
285	!
286	!-- Calculate those variables needed in the tendency terms which need
287	!-- global communication
288	IF ( .NOT. use_single_reference_value .AND. &
289	.NOT. use_initial_profile_as_reference ) THEN
290	!
291	!-- Horizontally averaged profiles to be used as reference state in
292	!-- buoyancy terms (WARNING: only the respective last call of
293	!-- calc_mean_profile defines the reference state!)
294	IF ( .NOT. neutral ) THEN
295	CALL calc_mean_profile( pt, 4 )
296	ref_state(:) = hom(:,1,4,0) ! this is used in the buoyancy term
297	ENDIF
298	IF ( ocean ) THEN
299	CALL calc_mean_profile( rho, 64 )
300	ref_state(:) = hom(:,1,64,0)
301	ENDIF
302	IF ( humidity ) THEN
303	CALL calc_mean_profile( vpt, 44 )
304	ref_state(:) = hom(:,1,44,0)
305	ENDIF
306
307	ENDIF
308
309	IF ( .NOT. constant_diffusion ) CALL production_e_init
310	IF ( ( ws_scheme_mom .OR. ws_scheme_sca ) .AND. &
311	intermediate_timestep_count == 1 ) CALL ws_statistics
312	!
313	!-- In case of nudging calculate current nudging time scale and horizontal
314	!-- means of u,v,pt and q
315	IF ( nudging ) THEN
316	CALL calc_tnudge( simulated_time )
317	CALL calc_mean_profile( u, 1 )
318	CALL calc_mean_profile( v, 2 )
319	CALL calc_mean_profile( pt, 4 )
320	CALL calc_mean_profile( q, 41 )
321	ENDIF
322
323	!
324	!-- Solve the prognostic equations. A fast cache optimized version with
325	!-- only one single loop is used in case of Piascek-Williams advection
326	!-- scheme. NEC vector machines use a different version, because
327	!-- in the other versions a good vectorization is prohibited due to
328	!-- inlining problems.
329	IF ( loop_optimization == 'cache' ) THEN
330	CALL prognostic_equations_cache
331	ELSEIF ( loop_optimization == 'vector' ) THEN
332	CALL prognostic_equations_vector
333	ELSEIF ( loop_optimization == 'acc' ) THEN
334	i_left = nxl; i_right = nxr
335	j_south = nys; j_north = nyn
336	CALL prognostic_equations_acc
337
338	! i_left = nxl; i_right = nxl+nbgp-1
339	! j_south = nys; j_north = nyn
340	! CALL prognostic_equations_acc
341	! i_left = nxr-nbgp+1; i_right = nxr
342	! j_south = nys; j_north = nyn
343	! CALL prognostic_equations_acc
344
345	!
346	!-- Exchange of ghost points (lateral boundary conditions)
347	IF ( background_communication ) THEN
348
349	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
350
351	send_receive = 'lr'
352	sendrecv_in_background = .TRUE.
353	req = 0
354	req_count = 0
355
356	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
357	on_device = .TRUE. ! to be removed after complete porting
358	ELSE ! of ghost point exchange
359	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
360	ENDIF
361
362	CALL exchange_horiz( u_p, nbgp )
363	CALL exchange_horiz( v_p, nbgp )
364	CALL exchange_horiz( w_p, nbgp )
365	CALL exchange_horiz( pt_p, nbgp )
366	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
367	IF ( ocean ) THEN
368	CALL exchange_horiz( sa_p, nbgp )
369	CALL exchange_horiz( rho, nbgp )
370	CALL exchange_horiz( prho, nbgp )
371	ENDIF
372	IF (humidity .OR. passive_scalar) THEN
373	CALL exchange_horiz( q_p, nbgp )
374	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
375	CALL exchange_horiz( qr_p, nbgp )
376	CALL exchange_horiz( nr_p, nbgp )
377	ENDIF
378	ENDIF
379	IF ( cloud_droplets ) THEN
380	CALL exchange_horiz( ql, nbgp )
381	CALL exchange_horiz( ql_c, nbgp )
382	CALL exchange_horiz( ql_v, nbgp )
383	CALL exchange_horiz( ql_vp, nbgp )
384	ENDIF
385	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
386
387	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
388	on_device = .FALSE. ! to be removed after complete porting
389	ELSE ! of ghost point exchange
390	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
391	ENDIF
392
393	sendrecv_in_background = .FALSE.
394
395	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'pause' )
396
397	ENDIF
398
399	! i_left = nxl+nbgp; i_right = nxr-nbgp
400	! j_south = nys; j_north = nys+nbgp-1
401	! CALL prognostic_equations_acc
402	! i_left = nxl+nbgp; i_right = nxr-nbgp
403	! j_south = nyn-nbgp+1; j_north = nyn
404	! CALL prognostic_equations_acc
405
406	IF ( background_communication ) THEN
407	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'start' )
408	#if defined( __parallel )
409	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
410	#endif
411	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'pause' )
412
413	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'continue' )
414
415	send_receive = 'ns'
416	sendrecv_in_background = .TRUE.
417	req = 0
418	req_count = 0
419
420	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
421	on_device = .TRUE. ! to be removed after complete porting
422	ELSE ! of ghost point exchange
423	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
424	ENDIF
425
426	CALL exchange_horiz( u_p, nbgp )
427	CALL exchange_horiz( v_p, nbgp )
428	CALL exchange_horiz( w_p, nbgp )
429	CALL exchange_horiz( pt_p, nbgp )
430	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
431	IF ( ocean ) THEN
432	CALL exchange_horiz( sa_p, nbgp )
433	CALL exchange_horiz( rho, nbgp )
434	CALL exchange_horiz( prho, nbgp )
435	ENDIF
436	IF (humidity .OR. passive_scalar) THEN
437	CALL exchange_horiz( q_p, nbgp )
438	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
439	CALL exchange_horiz( qr_p, nbgp )
440	CALL exchange_horiz( nr_p, nbgp )
441	ENDIF
442	ENDIF
443	IF ( cloud_droplets ) THEN
444	CALL exchange_horiz( ql, nbgp )
445	CALL exchange_horiz( ql_c, nbgp )
446	CALL exchange_horiz( ql_v, nbgp )
447	CALL exchange_horiz( ql_vp, nbgp )
448	ENDIF
449	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
450
451	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
452	on_device = .FALSE. ! to be removed after complete porting
453	ELSE ! of ghost point exchange
454	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
455	ENDIF
456
457	sendrecv_in_background = .FALSE.
458
459	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
460
461	ENDIF
462
463	! i_left = nxl+nbgp; i_right = nxr-nbgp
464	! j_south = nys+nbgp; j_north = nyn-nbgp
465	! CALL prognostic_equations_acc
466
467	IF ( background_communication ) THEN
468	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'continue' )
469	#if defined( __parallel )
470	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
471	#endif
472	send_receive = 'al'
473	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'stop' )
474	ENDIF
475
476	ENDIF
477
478	!
479	!-- Particle transport/physics with the Lagrangian particle model
480	!-- (only once during intermediate steps, because it uses an Euler-step)
481	!-- ### particle model should be moved before prognostic_equations, in order
482	!-- to regard droplet interactions directly
483	IF ( particle_advection .AND. &
484	simulated_time >= particle_advection_start .AND. &
485	intermediate_timestep_count == 1 ) THEN
486	CALL lpm
487	first_call_lpm = .FALSE.
488	ENDIF
489
490	!
491	!-- Interaction of droplets with temperature and specific humidity.
492	!-- Droplet condensation and evaporation is calculated within
493	!-- advec_particles.
494	IF ( cloud_droplets .AND. &
495	intermediate_timestep_count == intermediate_timestep_count_max )&
496	THEN
497	CALL interaction_droplets_ptq
498	ENDIF
499
500	!
501	!-- Exchange of ghost points (lateral boundary conditions)
502	IF ( .NOT. background_communication ) THEN
503
504	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
505
506	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
507	on_device = .TRUE. ! to be removed after complete porting
508	ELSE ! of ghost point exchange
509	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
510	ENDIF
511
512	CALL exchange_horiz( u_p, nbgp )
513	CALL exchange_horiz( v_p, nbgp )
514	CALL exchange_horiz( w_p, nbgp )
515	CALL exchange_horiz( pt_p, nbgp )
516	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
517	IF ( ocean ) THEN
518	CALL exchange_horiz( sa_p, nbgp )
519	CALL exchange_horiz( rho, nbgp )
520	CALL exchange_horiz( prho, nbgp )
521	ENDIF
522	IF (humidity .OR. passive_scalar) THEN
523	CALL exchange_horiz( q_p, nbgp )
524	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
525	precipitation ) THEN
526	CALL exchange_horiz( qr_p, nbgp )
527	CALL exchange_horiz( nr_p, nbgp )
528	ENDIF
529	ENDIF
530	IF ( cloud_droplets ) THEN
531	CALL exchange_horiz( ql, nbgp )
532	CALL exchange_horiz( ql_c, nbgp )
533	CALL exchange_horiz( ql_v, nbgp )
534	CALL exchange_horiz( ql_vp, nbgp )
535	ENDIF
536	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
537
538	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
539	on_device = .FALSE. ! to be removed after complete porting
540	ELSE ! of ghost point exchange
541	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
542	ENDIF
543
544	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
545
546	ENDIF
547
548	!
549	!-- Boundary conditions for the prognostic quantities (except of the
550	!-- velocities at the outflow in case of a non-cyclic lateral wall)
551	CALL boundary_conds
552
553	!
554	!-- Swap the time levels in preparation for the next time step.
555	CALL swap_timelevel
556
557	!
558	!-- Temperature offset must be imposed at cyclic boundaries in x-direction
559	!-- when a sloping surface is used
560	IF ( sloping_surface ) THEN
561	IF ( nxl == 0 ) pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - &
562	pt_slope_offset
563	IF ( nxr == nx ) pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + &
564	pt_slope_offset
565	ENDIF
566
567	!
568	!-- Impose a turbulent inflow using the recycling method
569	IF ( turbulent_inflow ) CALL inflow_turbulence
570
571	!
572	!-- Impose a random perturbation on the horizontal velocity field
573	IF ( create_disturbances .AND. &
574	( call_psolver_at_all_substeps .AND. &
575	intermediate_timestep_count == intermediate_timestep_count_max )&
576	.OR. ( .NOT. call_psolver_at_all_substeps .AND. &
577	intermediate_timestep_count == 1 ) ) &
578	THEN
579	time_disturb = time_disturb + dt_3d
580	IF ( time_disturb >= dt_disturb ) THEN
581	!$acc update host( u, v )
582	IF ( numprocs == 1 ) on_device = .FALSE. ! workaround, remove later
583	IF ( hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit ) THEN
584	CALL disturb_field( nzb_u_inner, tend, u )
585	CALL disturb_field( nzb_v_inner, tend, v )
586	ELSEIF ( .NOT. bc_lr_cyc .OR. .NOT. bc_ns_cyc ) THEN
587	!
588	!-- Runs with a non-cyclic lateral wall need perturbations
589	!-- near the inflow throughout the whole simulation
590	dist_range = 1
591	CALL disturb_field( nzb_u_inner, tend, u )
592	CALL disturb_field( nzb_v_inner, tend, v )
593	dist_range = 0
594	ENDIF
595	IF ( numprocs == 1 ) on_device = .TRUE. ! workaround, remove later
596	!$acc update device( u, v )
597	time_disturb = time_disturb - dt_disturb
598	ENDIF
599	ENDIF
600
601	!
602	!-- Reduce the velocity divergence via the equation for perturbation
603	!-- pressure.
604	IF ( intermediate_timestep_count == 1 .OR. &
605	call_psolver_at_all_substeps ) THEN
606	CALL pres
607	ENDIF
608
609	!
610	!-- If required, compute liquid water content
611	IF ( cloud_physics ) THEN
612	CALL calc_liquid_water_content
613	!$acc update device( ql )
614	ENDIF
615	!
616	!-- If required, compute virtual potential temperature
617	IF ( humidity ) THEN
618	CALL compute_vpt
619	!$acc update device( vpt )
620	ENDIF
621	!
622	!-- Compute the diffusion quantities
623	IF ( .NOT. constant_diffusion ) THEN
624
625	!
626	!-- Determine surface fluxes shf and qsws and surface values
627	!-- pt_surface and q_surface in dependence on data from external
628	!-- file LSF_DATA respectively
629	IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
630	intermediate_timestep_count == intermediate_timestep_count_max )&
631	THEN
632	CALL ls_forcing_surf ( simulated_time )
633	ENDIF
634
635	!
636	!-- First the vertical fluxes in the Prandtl layer are being computed
637	IF ( prandtl_layer ) THEN
638	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'start' )
639	CALL prandtl_fluxes
640	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'stop' )
641	ENDIF
642
643	!
644	!-- Compute the diffusion coefficients
645	CALL cpu_log( log_point(17), 'diffusivities', 'start' )
646	IF ( .NOT. humidity ) THEN
647	IF ( ocean ) THEN
648	CALL diffusivities( prho, prho_reference )
649	ELSE
650	CALL diffusivities( pt, pt_reference )
651	ENDIF
652	ELSE
653	CALL diffusivities( vpt, pt_reference )
654	ENDIF
655	CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
656
657	ENDIF
658
659	ENDDO ! Intermediate step loop
660
661	!
662	!-- Increase simulation time and output times
663	nr_timesteps_this_run = nr_timesteps_this_run + 1
664	current_timestep_number = current_timestep_number + 1
665	simulated_time = simulated_time + dt_3d
666	simulated_time_chr = time_to_string( simulated_time )
667	time_since_reference_point = simulated_time - coupling_start_time
668
669	IF ( simulated_time >= skip_time_data_output_av ) THEN
670	time_do_av = time_do_av + dt_3d
671	ENDIF
672	IF ( simulated_time >= skip_time_do2d_xy ) THEN
673	time_do2d_xy = time_do2d_xy + dt_3d
674	ENDIF
675	IF ( simulated_time >= skip_time_do2d_xz ) THEN
676	time_do2d_xz = time_do2d_xz + dt_3d
677	ENDIF
678	IF ( simulated_time >= skip_time_do2d_yz ) THEN
679	time_do2d_yz = time_do2d_yz + dt_3d
680	ENDIF
681	IF ( simulated_time >= skip_time_do3d ) THEN
682	time_do3d = time_do3d + dt_3d
683	ENDIF
684	DO mid = 1, masks
685	IF ( simulated_time >= skip_time_domask(mid) ) THEN
686	time_domask(mid)= time_domask(mid) + dt_3d
687	ENDIF
688	ENDDO
689	time_dvrp = time_dvrp + dt_3d
690	IF ( simulated_time >= skip_time_dosp ) THEN
691	time_dosp = time_dosp + dt_3d
692	ENDIF
693	time_dots = time_dots + dt_3d
694	IF ( .NOT. first_call_lpm ) THEN
695	time_dopts = time_dopts + dt_3d
696	ENDIF
697	IF ( simulated_time >= skip_time_dopr ) THEN
698	time_dopr = time_dopr + dt_3d
699	ENDIF
700	time_dopr_listing = time_dopr_listing + dt_3d
701	time_run_control = time_run_control + dt_3d
702
703	!
704	!-- Data exchange between coupled models
705	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
706	time_coupling = time_coupling + dt_3d
707
708	!
709	!-- In case of model termination initiated by the local model
710	!-- (terminate_coupled > 0), the coupler must be skipped because it would
711	!-- cause an MPI intercomminucation hang.
712	!-- If necessary, the coupler will be called at the beginning of the
713	!-- next restart run.
714	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
715	CALL surface_coupler
716	time_coupling = time_coupling - dt_coupling
717	ENDDO
718	ENDIF
719
720	!
721	!-- Execute user-defined actions
722	CALL user_actions( 'after_integration' )
723
724	!
725	!-- If Galilei transformation is used, determine the distance that the
726	!-- model has moved so far
727	IF ( galilei_transformation ) THEN
728	advected_distance_x = advected_distance_x + u_gtrans * dt_3d
729	advected_distance_y = advected_distance_y + v_gtrans * dt_3d
730	ENDIF
731
732	!
733	!-- Check, if restart is necessary (because cpu-time is expiring or
734	!-- because it is forced by user) and set stop flag
735	!-- This call is skipped if the remote model has already initiated a restart.
736	IF ( .NOT. terminate_run ) CALL check_for_restart
737
738	!
739	!-- Carry out statistical analysis and output at the requested output times.
740	!-- The MOD function is used for calculating the output time counters (like
741	!-- time_dopr) in order to regard a possible decrease of the output time
742	!-- interval in case of restart runs
743
744	!
745	!-- Set a flag indicating that so far no statistics have been created
746	!-- for this time step
747	flow_statistics_called = .FALSE.
748
749	!
750	!-- If required, call flow_statistics for averaging in time
751	IF ( averaging_interval_pr /= 0.0_wp .AND. &
752	( dt_dopr - time_dopr ) <= averaging_interval_pr .AND. &
753	simulated_time >= skip_time_dopr ) THEN
754	time_dopr_av = time_dopr_av + dt_3d
755	IF ( time_dopr_av >= dt_averaging_input_pr ) THEN
756	do_sum = .TRUE.
757	time_dopr_av = MOD( time_dopr_av, &
758	MAX( dt_averaging_input_pr, dt_3d ) )
759	ENDIF
760	ENDIF
761	IF ( do_sum ) CALL flow_statistics
762
763	!
764	!-- Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
765	IF ( averaging_interval /= 0.0_wp .AND. &
766	( dt_data_output_av - time_do_av ) <= averaging_interval .AND. &
767	simulated_time >= skip_time_data_output_av ) &
768	THEN
769	time_do_sla = time_do_sla + dt_3d
770	IF ( time_do_sla >= dt_averaging_input ) THEN
771	CALL sum_up_3d_data
772	average_count_3d = average_count_3d + 1
773	time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
774	ENDIF
775	ENDIF
776
777	!
778	!-- Calculate spectra for time averaging
779	IF ( averaging_interval_sp /= 0.0_wp .AND. &
780	( dt_dosp - time_dosp ) <= averaging_interval_sp .AND. &
781	simulated_time >= skip_time_dosp ) THEN
782	time_dosp_av = time_dosp_av + dt_3d
783	IF ( time_dosp_av >= dt_averaging_input_pr ) THEN
784	CALL calc_spectra
785	time_dosp_av = MOD( time_dosp_av, &
786	MAX( dt_averaging_input_pr, dt_3d ) )
787	ENDIF
788	ENDIF
789
790	!
791	!-- Computation and output of run control parameters.
792	!-- This is also done whenever perturbations have been imposed
793	IF ( time_run_control >= dt_run_control .OR. &
794	timestep_scheme(1:5) /= 'runge' .OR. disturbance_created ) &
795	THEN
796	CALL run_control
797	IF ( time_run_control >= dt_run_control ) THEN
798	time_run_control = MOD( time_run_control, &
799	MAX( dt_run_control, dt_3d ) )
800	ENDIF
801	ENDIF
802
803	!
804	!-- Profile output (ASCII) on file
805	IF ( time_dopr_listing >= dt_dopr_listing ) THEN
806	CALL print_1d
807	time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, &
808	dt_3d ) )
809	ENDIF
810
811	!
812	!-- Graphic output for PROFIL
813	IF ( time_dopr >= dt_dopr ) THEN
814	IF ( dopr_n /= 0 ) CALL data_output_profiles
815	time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
816	time_dopr_av = 0.0_wp ! due to averaging (see above)
817	ENDIF
818
819	!
820	!-- Graphic output for time series
821	IF ( time_dots >= dt_dots ) THEN
822	CALL data_output_tseries
823	time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
824	ENDIF
825
826	!
827	!-- Output of spectra (formatted for use with PROFIL), in case of no
828	!-- time averaging, spectra has to be calculated before
829	IF ( time_dosp >= dt_dosp ) THEN
830	IF ( average_count_sp == 0 ) CALL calc_spectra
831	CALL data_output_spectra
832	time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
833	ENDIF
834
835	!
836	!-- 2d-data output (cross-sections)
837	IF ( time_do2d_xy >= dt_do2d_xy ) THEN
838	CALL data_output_2d( 'xy', 0 )
839	time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
840	ENDIF
841	IF ( time_do2d_xz >= dt_do2d_xz ) THEN
842	CALL data_output_2d( 'xz', 0 )
843	time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
844	ENDIF
845	IF ( time_do2d_yz >= dt_do2d_yz ) THEN
846	CALL data_output_2d( 'yz', 0 )
847	time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
848	ENDIF
849
850	!
851	!-- 3d-data output (volume data)
852	IF ( time_do3d >= dt_do3d ) THEN
853	CALL data_output_3d( 0 )
854	time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
855	ENDIF
856
857	!
858	!-- masked data output
859	!-- Parallel netcdf output is not tested so far for masked data, hence
860	!-- netcdf_data_format is switched back to non-paralell output.
861	netcdf_data_format_save = netcdf_data_format
862	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
863	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
864	DO mid = 1, masks
865	IF ( time_domask(mid) >= dt_domask(mid) ) THEN
866	CALL data_output_mask( 0 )
867	time_domask(mid) = MOD( time_domask(mid), &
868	MAX( dt_domask(mid), dt_3d ) )
869	ENDIF
870	ENDDO
871	netcdf_data_format = netcdf_data_format_save
872
873	!
874	!-- Output of time-averaged 2d/3d/masked data
875	IF ( time_do_av >= dt_data_output_av ) THEN
876	CALL average_3d_data
877	CALL data_output_2d( 'xy', 1 )
878	CALL data_output_2d( 'xz', 1 )
879	CALL data_output_2d( 'yz', 1 )
880	CALL data_output_3d( 1 )
881	!-- Parallel netcdf output is not tested so far for masked data, hence
882	!-- netcdf_data_format is switched back to non-paralell output.
883	netcdf_data_format_save = netcdf_data_format
884	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
885	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
886	DO mid = 1, masks
887	CALL data_output_mask( 1 )
888	ENDDO
889	netcdf_data_format = netcdf_data_format_save
890	time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
891	ENDIF
892
893	!
894	!-- Output of particle time series
895	IF ( particle_advection ) THEN
896	IF ( time_dopts >= dt_dopts .OR. &
897	( simulated_time >= particle_advection_start .AND. &
898	first_call_lpm ) ) THEN
899	CALL data_output_ptseries
900	time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
901	ENDIF
902	ENDIF
903
904	!
905	!-- Output of dvrp-graphics (isosurface, particles, slicer)
906	#if defined( __dvrp_graphics )
907	CALL DVRP_LOG_EVENT( -2, current_timestep_number-1 )
908	#endif
909	IF ( time_dvrp >= dt_dvrp ) THEN
910	CALL data_output_dvrp
911	time_dvrp = MOD( time_dvrp, MAX( dt_dvrp, dt_3d ) )
912	ENDIF
913	#if defined( __dvrp_graphics )
914	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
915	#endif
916
917	!
918	!-- If required, set the heat flux for the next time step at a random value
919	IF ( constant_heatflux .AND. random_heatflux ) CALL disturb_heatflux
920
921	!
922	!-- Execute user-defined actions
923	CALL user_actions( 'after_timestep' )
924
925	CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
926
927
928	ENDDO ! time loop
929
930	#if defined( __dvrp_graphics )
931	CALL DVRP_LOG_EVENT( -2, current_timestep_number )
932	#endif
933
934	END SUBROUTINE time_integration

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