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source: palm/trunk/SOURCE/time_integration.f90 @ 1380

Last change on this file since 1380 was 1380, checked in by heinze, 10 years ago
Upper boundary conditions for pt and q in case of nudging adjusted
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File size: 37.1 KB

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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	! CALL of nudge_ref added
23	! bc_pt_t_val and bc_q_t_val are updated in case nudging is used
24	!
25	! Former revisions:
26	! -----------------
27	! $Id: time_integration.f90 1380 2014-04-28 12:40:45Z heinze $
28	!
29	! 1365 2014-04-22 15:03:56Z boeske
30	! Reset sums_ls_l to zero at each timestep
31	! +sums_ls_l
32	! Calculation of reference state (previously in subroutine calc_mean_profile)
33
34	! 1342 2014-03-26 17:04:47Z kanani
35	! REAL constants defined as wp-kind
36	!
37	! 1320 2014-03-20 08:40:49Z raasch
38	! ONLY-attribute added to USE-statements,
39	! kind-parameters added to all INTEGER and REAL declaration statements,
40	! kinds are defined in new module kinds,
41	! old module precision_kind is removed,
42	! revision history before 2012 removed,
43	! comment fields (!:) to be used for variable explanations added to
44	! all variable declaration statements
45	! 1318 2014-03-17 13:35:16Z raasch
46	! module interfaces removed
47	!
48	! 1308 2014-03-13 14:58:42Z fricke
49	! +netcdf_data_format_save
50	! For masked data, parallel netcdf output is not tested so far, hence
51	! netcdf_data_format is switched back to non-paralell output.
52	!
53	! 1276 2014-01-15 13:40:41Z heinze
54	! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars
55	!
56	! 1257 2013-11-08 15:18:40Z raasch
57	! acc-update-host directive for timestep removed
58	!
59	! 1241 2013-10-30 11:36:58Z heinze
60	! Generalize calc_mean_profile for wider use
61	! Determine shf and qsws in dependence on data from LSF_DATA
62	! Determine ug and vg in dependence on data from LSF_DATA
63	! 1221 2013-09-10 08:59:13Z raasch
64	! host update of arrays before timestep is called
65	!
66	! 1179 2013-06-14 05:57:58Z raasch
67	! mean profiles for reference state are only calculated if required,
68	! small bugfix for background communication
69	!
70	! 1171 2013-05-30 11:27:45Z raasch
71	! split of prognostic_equations deactivated (comment lines), for the time being
72	!
73	! 1128 2013-04-12 06:19:32Z raasch
74	! asynchronous transfer of ghost point data realized for acc-optimized version:
75	! prognostic_equations are first called two times for those points required for
76	! the left-right and north-south exchange, respectively, and then for the
77	! remaining points,
78	! those parts requiring global communication moved from prognostic_equations to
79	! here
80	!
81	! 1115 2013-03-26 18:16:16Z hoffmann
82	! calculation of qr and nr is restricted to precipitation
83	!
84	! 1113 2013-03-10 02:48:14Z raasch
85	! GPU-porting of boundary conditions,
86	! openACC directives updated
87	! formal parameter removed from routine boundary_conds
88	!
89	! 1111 2013-03-08 23:54:10Z raasch
90	! +internal timestep counter for cpu statistics added,
91	! openACC directives updated
92	!
93	! 1092 2013-02-02 11:24:22Z raasch
94	! unused variables removed
95	!
96	! 1065 2012-11-22 17:42:36Z hoffmann
97	! exchange of diss (dissipation rate) in case of turbulence = .TRUE. added
98	!
99	! 1053 2012-11-13 17:11:03Z hoffmann
100	! exchange of ghost points for nr, qr added
101	!
102	! 1036 2012-10-22 13:43:42Z raasch
103	! code put under GPL (PALM 3.9)
104	!
105	! 1019 2012-09-28 06:46:45Z raasch
106	! non-optimized version of prognostic_equations removed
107	!
108	! 1015 2012-09-27 09:23:24Z raasch
109	! +call of prognostic_equations_acc
110	!
111	! 1001 2012-09-13 14:08:46Z raasch
112	! all actions concerning leapfrog- and upstream-spline-scheme removed
113	!
114	! 849 2012-03-15 10:35:09Z raasch
115	! advec_particles renamed lpm, first_call_advec_particles renamed first_call_lpm
116	!
117	! 825 2012-02-19 03:03:44Z raasch
118	! wang_collision_kernel renamed wang_kernel
119	!
120	! Revision 1.1 1997/08/11 06:19:04 raasch
121	! Initial revision
122	!
123	!
124	! Description:
125	! ------------
126	! Integration in time of the model equations, statistical analysis and graphic
127	! output
128	!------------------------------------------------------------------------------!
129
130	USE advec_ws, &
131	ONLY: ws_statistics
132
133	USE arrays_3d, &
134	ONLY: diss, dzu, e_p, nr_p, prho, pt, pt_p, pt_init, q_init, q, ql, &
135	ql_c, ql_v, ql_vp, qr_p, q_p, ref_state, rho, sa_p, tend, u, &
136	u_p, v, vpt, v_p, w_p
137
138	USE calc_mean_profile_mod, &
139	ONLY: calc_mean_profile
140
141	USE control_parameters, &
142	ONLY: advected_distance_x, advected_distance_y, average_count_3d, &
143	average_count_sp, averaging_interval, averaging_interval_pr, &
144	averaging_interval_sp, bc_lr_cyc, bc_ns_cyc, bc_pt_t_val, &
145	bc_q_t_val, call_psolver_at_all_substeps, cloud_droplets, &
146	cloud_physics, constant_heatflux, create_disturbances, dopr_n, &
147	constant_diffusion, coupling_mode, coupling_start_time, &
148	current_timestep_number, disturbance_created, &
149	disturbance_energy_limit, dist_range, do_sum, dt_3d, &
150	dt_averaging_input, dt_averaging_input_pr, dt_coupling, &
151	dt_data_output_av, dt_disturb, dt_do2d_xy, dt_do2d_xz, &
152	dt_do2d_yz, dt_do3d, dt_domask,dt_dopts, dt_dopr, &
153	dt_dopr_listing, dt_dosp, dt_dots, dt_dvrp, dt_run_control, &
154	end_time, first_call_lpm, galilei_transformation, humidity, &
155	icloud_scheme, intermediate_timestep_count, &
156	intermediate_timestep_count_max, large_scale_forcing, &
157	loop_optimization, lsf_surf, lsf_vert, masks, mid, &
158	netcdf_data_format, neutral, nr_timesteps_this_run, nudging, &
159	ocean, on_device, passive_scalar, prandtl_layer, precipitation, &
160	prho_reference, pt_reference, pt_slope_offset, random_heatflux, &
161	run_coupled, simulated_time, simulated_time_chr, &
162	skip_time_do2d_xy, skip_time_do2d_xz, skip_time_do2d_yz, &
163	skip_time_do3d, skip_time_domask, skip_time_dopr, &
164	skip_time_dosp, skip_time_data_output_av, sloping_surface, &
165	stop_dt, terminate_coupled, terminate_run, timestep_scheme, &
166	time_coupling, time_do2d_xy, time_do2d_xz, time_do2d_yz, &
167	time_do3d, time_domask, time_dopr, time_dopr_av, &
168	time_dopr_listing, time_dopts, time_dosp, time_dosp_av, &
169	time_dots, time_do_av, time_do_sla, time_disturb, time_dvrp, &
170	time_run_control, time_since_reference_point, turbulence, &
171	turbulent_inflow, use_initial_profile_as_reference, &
172	use_single_reference_value, u_gtrans, v_gtrans, ws_scheme_mom, &
173	ws_scheme_sca
174
175	USE cpulog, &
176	ONLY: cpu_log, log_point, log_point_s
177
178	USE indices, &
179	ONLY: i_left, i_right, j_north, j_south, nbgp, nx, nxl, nxlg, nxr, &
180	nxrg, nyn, nys, nzb, nzt, nzb_u_inner, nzb_v_inner
181
182	USE interaction_droplets_ptq_mod, &
183	ONLY: interaction_droplets_ptq
184
185	USE kinds
186
187	USE ls_forcing_mod, &
188	ONLY: ls_forcing_surf, ls_forcing_vert
189
190	USE nudge_mod, &
191	ONLY: calc_tnudge, nudge_ref
192
193	USE particle_attributes, &
194	ONLY: particle_advection, particle_advection_start, wang_kernel
195
196	USE pegrid
197
198	USE production_e_mod, &
199	ONLY: production_e_init
200
201	USE prognostic_equations_mod, &
202	ONLY: prognostic_equations_acc, prognostic_equations_cache, &
203	prognostic_equations_vector
204
205	USE statistics, &
206	ONLY: flow_statistics_called, hom, pr_palm, sums_ls_l
207
208	USE user_actions_mod, &
209	ONLY: user_actions
210
211	IMPLICIT NONE
212
213	CHARACTER (LEN=9) :: time_to_string !:
214
215	INTEGER(iwp) :: netcdf_data_format_save !:
216
217	!
218	!-- At the beginning of a simulation determine the time step as well as
219	!-- determine and print out the run control parameters
220	IF ( simulated_time == 0.0_wp ) CALL timestep
221
222	CALL run_control
223
224
225	!
226	!-- Data exchange between coupled models in case that a call has been omitted
227	!-- at the end of the previous run of a job chain.
228	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
229	!
230	!-- In case of model termination initiated by the local model the coupler
231	!-- must not be called because this would again cause an MPI hang.
232	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
233	CALL surface_coupler
234	time_coupling = time_coupling - dt_coupling
235	ENDDO
236	IF (time_coupling == 0.0_wp .AND. time_since_reference_point < dt_coupling)&
237	THEN
238	time_coupling = time_since_reference_point
239	ENDIF
240	ENDIF
241
242
243	#if defined( __dvrp_graphics )
244	!
245	!-- Time measurement with dvrp software
246	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
247	#endif
248
249	!
250	!-- Start of the time loop
251	DO WHILE ( simulated_time < end_time .AND. .NOT. stop_dt .AND. &
252	.NOT. terminate_run )
253
254	CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
255
256	!
257	!-- Determine size of next time step
258	IF ( simulated_time /= 0.0_wp ) THEN
259	CALL timestep
260	ENDIF
261
262	!
263	!-- Determine ug, vg and w_subs in dependence on data from external file
264	!-- LSF_DATA
265	IF ( large_scale_forcing .AND. lsf_vert ) THEN
266	CALL ls_forcing_vert ( simulated_time )
267	sums_ls_l = 0.0_wp
268	ENDIF
269
270	!
271	!-- Set pt_init and q_init to the current profiles taken from
272	!-- NUDGING_DATA
273	IF ( nudging ) THEN
274	CALL nudge_ref ( simulated_time )
275	!
276	!-- Store temperature gradient at the top boundary for possible Neumann
277	!-- boundary condition
278	bc_pt_t_val = ( pt_init(nzt+1) - pt_init(nzt) ) / dzu(nzt+1)
279	bc_q_t_val = ( q_init(nzt+1) - q_init(nzt) ) / dzu(nzt+1)
280	ENDIF
281
282	!
283	!-- Execute the user-defined actions
284	CALL user_actions( 'before_timestep' )
285
286	!
287	!-- Start of intermediate step loop
288	intermediate_timestep_count = 0
289	DO WHILE ( intermediate_timestep_count < &
290	intermediate_timestep_count_max )
291
292	intermediate_timestep_count = intermediate_timestep_count + 1
293
294	!
295	!-- Set the steering factors for the prognostic equations which depend
296	!-- on the timestep scheme
297	CALL timestep_scheme_steering
298
299	!
300	!-- Calculate those variables needed in the tendency terms which need
301	!-- global communication
302	IF ( .NOT. use_single_reference_value .AND. &
303	.NOT. use_initial_profile_as_reference ) THEN
304	!
305	!-- Horizontally averaged profiles to be used as reference state in
306	!-- buoyancy terms (WARNING: only the respective last call of
307	!-- calc_mean_profile defines the reference state!)
308	IF ( .NOT. neutral ) THEN
309	CALL calc_mean_profile( pt, 4 )
310	ref_state(:) = hom(:,1,4,0) ! this is used in the buoyancy term
311	ENDIF
312	IF ( ocean ) THEN
313	CALL calc_mean_profile( rho, 64 )
314	ref_state(:) = hom(:,1,64,0)
315	ENDIF
316	IF ( humidity ) THEN
317	CALL calc_mean_profile( vpt, 44 )
318	ref_state(:) = hom(:,1,44,0)
319	ENDIF
320
321	ENDIF
322
323	IF ( .NOT. constant_diffusion ) CALL production_e_init
324	IF ( ( ws_scheme_mom .OR. ws_scheme_sca ) .AND. &
325	intermediate_timestep_count == 1 ) CALL ws_statistics
326	!
327	!-- In case of nudging calculate current nudging time scale and horizontal
328	!-- means of u, v, pt and q
329	IF ( nudging ) THEN
330	CALL calc_tnudge( simulated_time )
331	CALL calc_mean_profile( u, 1 )
332	CALL calc_mean_profile( v, 2 )
333	CALL calc_mean_profile( pt, 4 )
334	CALL calc_mean_profile( q, 41 )
335	ENDIF
336
337	!
338	!-- Solve the prognostic equations. A fast cache optimized version with
339	!-- only one single loop is used in case of Piascek-Williams advection
340	!-- scheme. NEC vector machines use a different version, because
341	!-- in the other versions a good vectorization is prohibited due to
342	!-- inlining problems.
343	IF ( loop_optimization == 'cache' ) THEN
344	CALL prognostic_equations_cache
345	ELSEIF ( loop_optimization == 'vector' ) THEN
346	CALL prognostic_equations_vector
347	ELSEIF ( loop_optimization == 'acc' ) THEN
348	i_left = nxl; i_right = nxr
349	j_south = nys; j_north = nyn
350	CALL prognostic_equations_acc
351
352	! i_left = nxl; i_right = nxl+nbgp-1
353	! j_south = nys; j_north = nyn
354	! CALL prognostic_equations_acc
355	! i_left = nxr-nbgp+1; i_right = nxr
356	! j_south = nys; j_north = nyn
357	! CALL prognostic_equations_acc
358
359	!
360	!-- Exchange of ghost points (lateral boundary conditions)
361	IF ( background_communication ) THEN
362
363	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
364
365	send_receive = 'lr'
366	sendrecv_in_background = .TRUE.
367	req = 0
368	req_count = 0
369
370	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
371	on_device = .TRUE. ! to be removed after complete porting
372	ELSE ! of ghost point exchange
373	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
374	ENDIF
375
376	CALL exchange_horiz( u_p, nbgp )
377	CALL exchange_horiz( v_p, nbgp )
378	CALL exchange_horiz( w_p, nbgp )
379	CALL exchange_horiz( pt_p, nbgp )
380	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
381	IF ( ocean ) THEN
382	CALL exchange_horiz( sa_p, nbgp )
383	CALL exchange_horiz( rho, nbgp )
384	CALL exchange_horiz( prho, nbgp )
385	ENDIF
386	IF (humidity .OR. passive_scalar) THEN
387	CALL exchange_horiz( q_p, nbgp )
388	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
389	CALL exchange_horiz( qr_p, nbgp )
390	CALL exchange_horiz( nr_p, nbgp )
391	ENDIF
392	ENDIF
393	IF ( cloud_droplets ) THEN
394	CALL exchange_horiz( ql, nbgp )
395	CALL exchange_horiz( ql_c, nbgp )
396	CALL exchange_horiz( ql_v, nbgp )
397	CALL exchange_horiz( ql_vp, nbgp )
398	ENDIF
399	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
400
401	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
402	on_device = .FALSE. ! to be removed after complete porting
403	ELSE ! of ghost point exchange
404	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
405	ENDIF
406
407	sendrecv_in_background = .FALSE.
408
409	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'pause' )
410
411	ENDIF
412
413	! i_left = nxl+nbgp; i_right = nxr-nbgp
414	! j_south = nys; j_north = nys+nbgp-1
415	! CALL prognostic_equations_acc
416	! i_left = nxl+nbgp; i_right = nxr-nbgp
417	! j_south = nyn-nbgp+1; j_north = nyn
418	! CALL prognostic_equations_acc
419
420	IF ( background_communication ) THEN
421	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'start' )
422	#if defined( __parallel )
423	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
424	#endif
425	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'pause' )
426
427	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'continue' )
428
429	send_receive = 'ns'
430	sendrecv_in_background = .TRUE.
431	req = 0
432	req_count = 0
433
434	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
435	on_device = .TRUE. ! to be removed after complete porting
436	ELSE ! of ghost point exchange
437	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
438	ENDIF
439
440	CALL exchange_horiz( u_p, nbgp )
441	CALL exchange_horiz( v_p, nbgp )
442	CALL exchange_horiz( w_p, nbgp )
443	CALL exchange_horiz( pt_p, nbgp )
444	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
445	IF ( ocean ) THEN
446	CALL exchange_horiz( sa_p, nbgp )
447	CALL exchange_horiz( rho, nbgp )
448	CALL exchange_horiz( prho, nbgp )
449	ENDIF
450	IF (humidity .OR. passive_scalar) THEN
451	CALL exchange_horiz( q_p, nbgp )
452	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
453	CALL exchange_horiz( qr_p, nbgp )
454	CALL exchange_horiz( nr_p, nbgp )
455	ENDIF
456	ENDIF
457	IF ( cloud_droplets ) THEN
458	CALL exchange_horiz( ql, nbgp )
459	CALL exchange_horiz( ql_c, nbgp )
460	CALL exchange_horiz( ql_v, nbgp )
461	CALL exchange_horiz( ql_vp, nbgp )
462	ENDIF
463	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
464
465	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
466	on_device = .FALSE. ! to be removed after complete porting
467	ELSE ! of ghost point exchange
468	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
469	ENDIF
470
471	sendrecv_in_background = .FALSE.
472
473	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
474
475	ENDIF
476
477	! i_left = nxl+nbgp; i_right = nxr-nbgp
478	! j_south = nys+nbgp; j_north = nyn-nbgp
479	! CALL prognostic_equations_acc
480
481	IF ( background_communication ) THEN
482	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'continue' )
483	#if defined( __parallel )
484	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
485	#endif
486	send_receive = 'al'
487	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'stop' )
488	ENDIF
489
490	ENDIF
491
492	!
493	!-- Particle transport/physics with the Lagrangian particle model
494	!-- (only once during intermediate steps, because it uses an Euler-step)
495	!-- ### particle model should be moved before prognostic_equations, in order
496	!-- to regard droplet interactions directly
497	IF ( particle_advection .AND. &
498	simulated_time >= particle_advection_start .AND. &
499	intermediate_timestep_count == 1 ) THEN
500	CALL lpm
501	first_call_lpm = .FALSE.
502	ENDIF
503
504	!
505	!-- Interaction of droplets with temperature and specific humidity.
506	!-- Droplet condensation and evaporation is calculated within
507	!-- advec_particles.
508	IF ( cloud_droplets .AND. &
509	intermediate_timestep_count == intermediate_timestep_count_max )&
510	THEN
511	CALL interaction_droplets_ptq
512	ENDIF
513
514	!
515	!-- Exchange of ghost points (lateral boundary conditions)
516	IF ( .NOT. background_communication ) THEN
517
518	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
519
520	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
521	on_device = .TRUE. ! to be removed after complete porting
522	ELSE ! of ghost point exchange
523	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
524	ENDIF
525
526	CALL exchange_horiz( u_p, nbgp )
527	CALL exchange_horiz( v_p, nbgp )
528	CALL exchange_horiz( w_p, nbgp )
529	CALL exchange_horiz( pt_p, nbgp )
530	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
531	IF ( ocean ) THEN
532	CALL exchange_horiz( sa_p, nbgp )
533	CALL exchange_horiz( rho, nbgp )
534	CALL exchange_horiz( prho, nbgp )
535	ENDIF
536	IF (humidity .OR. passive_scalar) THEN
537	CALL exchange_horiz( q_p, nbgp )
538	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
539	precipitation ) THEN
540	CALL exchange_horiz( qr_p, nbgp )
541	CALL exchange_horiz( nr_p, nbgp )
542	ENDIF
543	ENDIF
544	IF ( cloud_droplets ) THEN
545	CALL exchange_horiz( ql, nbgp )
546	CALL exchange_horiz( ql_c, nbgp )
547	CALL exchange_horiz( ql_v, nbgp )
548	CALL exchange_horiz( ql_vp, nbgp )
549	ENDIF
550	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
551
552	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
553	on_device = .FALSE. ! to be removed after complete porting
554	ELSE ! of ghost point exchange
555	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
556	ENDIF
557
558	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
559
560	ENDIF
561
562	!
563	!-- Boundary conditions for the prognostic quantities (except of the
564	!-- velocities at the outflow in case of a non-cyclic lateral wall)
565	CALL boundary_conds
566
567	!
568	!-- Swap the time levels in preparation for the next time step.
569	CALL swap_timelevel
570
571	!
572	!-- Temperature offset must be imposed at cyclic boundaries in x-direction
573	!-- when a sloping surface is used
574	IF ( sloping_surface ) THEN
575	IF ( nxl == 0 ) pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - &
576	pt_slope_offset
577	IF ( nxr == nx ) pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + &
578	pt_slope_offset
579	ENDIF
580
581	!
582	!-- Impose a turbulent inflow using the recycling method
583	IF ( turbulent_inflow ) CALL inflow_turbulence
584
585	!
586	!-- Impose a random perturbation on the horizontal velocity field
587	IF ( create_disturbances .AND. &
588	( call_psolver_at_all_substeps .AND. &
589	intermediate_timestep_count == intermediate_timestep_count_max )&
590	.OR. ( .NOT. call_psolver_at_all_substeps .AND. &
591	intermediate_timestep_count == 1 ) ) &
592	THEN
593	time_disturb = time_disturb + dt_3d
594	IF ( time_disturb >= dt_disturb ) THEN
595	!$acc update host( u, v )
596	IF ( numprocs == 1 ) on_device = .FALSE. ! workaround, remove later
597	IF ( hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit ) THEN
598	CALL disturb_field( nzb_u_inner, tend, u )
599	CALL disturb_field( nzb_v_inner, tend, v )
600	ELSEIF ( .NOT. bc_lr_cyc .OR. .NOT. bc_ns_cyc ) THEN
601	!
602	!-- Runs with a non-cyclic lateral wall need perturbations
603	!-- near the inflow throughout the whole simulation
604	dist_range = 1
605	CALL disturb_field( nzb_u_inner, tend, u )
606	CALL disturb_field( nzb_v_inner, tend, v )
607	dist_range = 0
608	ENDIF
609	IF ( numprocs == 1 ) on_device = .TRUE. ! workaround, remove later
610	!$acc update device( u, v )
611	time_disturb = time_disturb - dt_disturb
612	ENDIF
613	ENDIF
614
615	!
616	!-- Reduce the velocity divergence via the equation for perturbation
617	!-- pressure.
618	IF ( intermediate_timestep_count == 1 .OR. &
619	call_psolver_at_all_substeps ) THEN
620	CALL pres
621	ENDIF
622
623	!
624	!-- If required, compute liquid water content
625	IF ( cloud_physics ) THEN
626	CALL calc_liquid_water_content
627	!$acc update device( ql )
628	ENDIF
629	!
630	!-- If required, compute virtual potential temperature
631	IF ( humidity ) THEN
632	CALL compute_vpt
633	!$acc update device( vpt )
634	ENDIF
635	!
636	!-- Compute the diffusion quantities
637	IF ( .NOT. constant_diffusion ) THEN
638
639	!
640	!-- Determine surface fluxes shf and qsws and surface values
641	!-- pt_surface and q_surface in dependence on data from external
642	!-- file LSF_DATA respectively
643	IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
644	intermediate_timestep_count == intermediate_timestep_count_max )&
645	THEN
646	CALL ls_forcing_surf ( simulated_time )
647	ENDIF
648
649	!
650	!-- First the vertical fluxes in the Prandtl layer are being computed
651	IF ( prandtl_layer ) THEN
652	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'start' )
653	CALL prandtl_fluxes
654	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'stop' )
655	ENDIF
656
657	!
658	!-- Compute the diffusion coefficients
659	CALL cpu_log( log_point(17), 'diffusivities', 'start' )
660	IF ( .NOT. humidity ) THEN
661	IF ( ocean ) THEN
662	CALL diffusivities( prho, prho_reference )
663	ELSE
664	CALL diffusivities( pt, pt_reference )
665	ENDIF
666	ELSE
667	CALL diffusivities( vpt, pt_reference )
668	ENDIF
669	CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
670
671	ENDIF
672
673	ENDDO ! Intermediate step loop
674
675	!
676	!-- Increase simulation time and output times
677	nr_timesteps_this_run = nr_timesteps_this_run + 1
678	current_timestep_number = current_timestep_number + 1
679	simulated_time = simulated_time + dt_3d
680	simulated_time_chr = time_to_string( simulated_time )
681	time_since_reference_point = simulated_time - coupling_start_time
682
683	IF ( simulated_time >= skip_time_data_output_av ) THEN
684	time_do_av = time_do_av + dt_3d
685	ENDIF
686	IF ( simulated_time >= skip_time_do2d_xy ) THEN
687	time_do2d_xy = time_do2d_xy + dt_3d
688	ENDIF
689	IF ( simulated_time >= skip_time_do2d_xz ) THEN
690	time_do2d_xz = time_do2d_xz + dt_3d
691	ENDIF
692	IF ( simulated_time >= skip_time_do2d_yz ) THEN
693	time_do2d_yz = time_do2d_yz + dt_3d
694	ENDIF
695	IF ( simulated_time >= skip_time_do3d ) THEN
696	time_do3d = time_do3d + dt_3d
697	ENDIF
698	DO mid = 1, masks
699	IF ( simulated_time >= skip_time_domask(mid) ) THEN
700	time_domask(mid)= time_domask(mid) + dt_3d
701	ENDIF
702	ENDDO
703	time_dvrp = time_dvrp + dt_3d
704	IF ( simulated_time >= skip_time_dosp ) THEN
705	time_dosp = time_dosp + dt_3d
706	ENDIF
707	time_dots = time_dots + dt_3d
708	IF ( .NOT. first_call_lpm ) THEN
709	time_dopts = time_dopts + dt_3d
710	ENDIF
711	IF ( simulated_time >= skip_time_dopr ) THEN
712	time_dopr = time_dopr + dt_3d
713	ENDIF
714	time_dopr_listing = time_dopr_listing + dt_3d
715	time_run_control = time_run_control + dt_3d
716
717	!
718	!-- Data exchange between coupled models
719	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
720	time_coupling = time_coupling + dt_3d
721
722	!
723	!-- In case of model termination initiated by the local model
724	!-- (terminate_coupled > 0), the coupler must be skipped because it would
725	!-- cause an MPI intercomminucation hang.
726	!-- If necessary, the coupler will be called at the beginning of the
727	!-- next restart run.
728	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
729	CALL surface_coupler
730	time_coupling = time_coupling - dt_coupling
731	ENDDO
732	ENDIF
733
734	!
735	!-- Execute user-defined actions
736	CALL user_actions( 'after_integration' )
737
738	!
739	!-- If Galilei transformation is used, determine the distance that the
740	!-- model has moved so far
741	IF ( galilei_transformation ) THEN
742	advected_distance_x = advected_distance_x + u_gtrans * dt_3d
743	advected_distance_y = advected_distance_y + v_gtrans * dt_3d
744	ENDIF
745
746	!
747	!-- Check, if restart is necessary (because cpu-time is expiring or
748	!-- because it is forced by user) and set stop flag
749	!-- This call is skipped if the remote model has already initiated a restart.
750	IF ( .NOT. terminate_run ) CALL check_for_restart
751
752	!
753	!-- Carry out statistical analysis and output at the requested output times.
754	!-- The MOD function is used for calculating the output time counters (like
755	!-- time_dopr) in order to regard a possible decrease of the output time
756	!-- interval in case of restart runs
757
758	!
759	!-- Set a flag indicating that so far no statistics have been created
760	!-- for this time step
761	flow_statistics_called = .FALSE.
762
763	!
764	!-- If required, call flow_statistics for averaging in time
765	IF ( averaging_interval_pr /= 0.0_wp .AND. &
766	( dt_dopr - time_dopr ) <= averaging_interval_pr .AND. &
767	simulated_time >= skip_time_dopr ) THEN
768	time_dopr_av = time_dopr_av + dt_3d
769	IF ( time_dopr_av >= dt_averaging_input_pr ) THEN
770	do_sum = .TRUE.
771	time_dopr_av = MOD( time_dopr_av, &
772	MAX( dt_averaging_input_pr, dt_3d ) )
773	ENDIF
774	ENDIF
775	IF ( do_sum ) CALL flow_statistics
776
777	!
778	!-- Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
779	IF ( averaging_interval /= 0.0_wp .AND. &
780	( dt_data_output_av - time_do_av ) <= averaging_interval .AND. &
781	simulated_time >= skip_time_data_output_av ) &
782	THEN
783	time_do_sla = time_do_sla + dt_3d
784	IF ( time_do_sla >= dt_averaging_input ) THEN
785	CALL sum_up_3d_data
786	average_count_3d = average_count_3d + 1
787	time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
788	ENDIF
789	ENDIF
790
791	!
792	!-- Calculate spectra for time averaging
793	IF ( averaging_interval_sp /= 0.0_wp .AND. &
794	( dt_dosp - time_dosp ) <= averaging_interval_sp .AND. &
795	simulated_time >= skip_time_dosp ) THEN
796	time_dosp_av = time_dosp_av + dt_3d
797	IF ( time_dosp_av >= dt_averaging_input_pr ) THEN
798	CALL calc_spectra
799	time_dosp_av = MOD( time_dosp_av, &
800	MAX( dt_averaging_input_pr, dt_3d ) )
801	ENDIF
802	ENDIF
803
804	!
805	!-- Computation and output of run control parameters.
806	!-- This is also done whenever perturbations have been imposed
807	IF ( time_run_control >= dt_run_control .OR. &
808	timestep_scheme(1:5) /= 'runge' .OR. disturbance_created ) &
809	THEN
810	CALL run_control
811	IF ( time_run_control >= dt_run_control ) THEN
812	time_run_control = MOD( time_run_control, &
813	MAX( dt_run_control, dt_3d ) )
814	ENDIF
815	ENDIF
816
817	!
818	!-- Profile output (ASCII) on file
819	IF ( time_dopr_listing >= dt_dopr_listing ) THEN
820	CALL print_1d
821	time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, &
822	dt_3d ) )
823	ENDIF
824
825	!
826	!-- Graphic output for PROFIL
827	IF ( time_dopr >= dt_dopr ) THEN
828	IF ( dopr_n /= 0 ) CALL data_output_profiles
829	time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
830	time_dopr_av = 0.0_wp ! due to averaging (see above)
831	ENDIF
832
833	!
834	!-- Graphic output for time series
835	IF ( time_dots >= dt_dots ) THEN
836	CALL data_output_tseries
837	time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
838	ENDIF
839
840	!
841	!-- Output of spectra (formatted for use with PROFIL), in case of no
842	!-- time averaging, spectra has to be calculated before
843	IF ( time_dosp >= dt_dosp ) THEN
844	IF ( average_count_sp == 0 ) CALL calc_spectra
845	CALL data_output_spectra
846	time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
847	ENDIF
848
849	!
850	!-- 2d-data output (cross-sections)
851	IF ( time_do2d_xy >= dt_do2d_xy ) THEN
852	CALL data_output_2d( 'xy', 0 )
853	time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
854	ENDIF
855	IF ( time_do2d_xz >= dt_do2d_xz ) THEN
856	CALL data_output_2d( 'xz', 0 )
857	time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
858	ENDIF
859	IF ( time_do2d_yz >= dt_do2d_yz ) THEN
860	CALL data_output_2d( 'yz', 0 )
861	time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
862	ENDIF
863
864	!
865	!-- 3d-data output (volume data)
866	IF ( time_do3d >= dt_do3d ) THEN
867	CALL data_output_3d( 0 )
868	time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
869	ENDIF
870
871	!
872	!-- masked data output
873	!-- Parallel netcdf output is not tested so far for masked data, hence
874	!-- netcdf_data_format is switched back to non-paralell output.
875	netcdf_data_format_save = netcdf_data_format
876	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
877	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
878	DO mid = 1, masks
879	IF ( time_domask(mid) >= dt_domask(mid) ) THEN
880	CALL data_output_mask( 0 )
881	time_domask(mid) = MOD( time_domask(mid), &
882	MAX( dt_domask(mid), dt_3d ) )
883	ENDIF
884	ENDDO
885	netcdf_data_format = netcdf_data_format_save
886
887	!
888	!-- Output of time-averaged 2d/3d/masked data
889	IF ( time_do_av >= dt_data_output_av ) THEN
890	CALL average_3d_data
891	CALL data_output_2d( 'xy', 1 )
892	CALL data_output_2d( 'xz', 1 )
893	CALL data_output_2d( 'yz', 1 )
894	CALL data_output_3d( 1 )
895	!-- Parallel netcdf output is not tested so far for masked data, hence
896	!-- netcdf_data_format is switched back to non-paralell output.
897	netcdf_data_format_save = netcdf_data_format
898	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
899	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
900	DO mid = 1, masks
901	CALL data_output_mask( 1 )
902	ENDDO
903	netcdf_data_format = netcdf_data_format_save
904	time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
905	ENDIF
906
907	!
908	!-- Output of particle time series
909	IF ( particle_advection ) THEN
910	IF ( time_dopts >= dt_dopts .OR. &
911	( simulated_time >= particle_advection_start .AND. &
912	first_call_lpm ) ) THEN
913	CALL data_output_ptseries
914	time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
915	ENDIF
916	ENDIF
917
918	!
919	!-- Output of dvrp-graphics (isosurface, particles, slicer)
920	#if defined( __dvrp_graphics )
921	CALL DVRP_LOG_EVENT( -2, current_timestep_number-1 )
922	#endif
923	IF ( time_dvrp >= dt_dvrp ) THEN
924	CALL data_output_dvrp
925	time_dvrp = MOD( time_dvrp, MAX( dt_dvrp, dt_3d ) )
926	ENDIF
927	#if defined( __dvrp_graphics )
928	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
929	#endif
930
931	!
932	!-- If required, set the heat flux for the next time step at a random value
933	IF ( constant_heatflux .AND. random_heatflux ) CALL disturb_heatflux
934
935	!
936	!-- Execute user-defined actions
937	CALL user_actions( 'after_timestep' )
938
939	CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
940
941
942	ENDDO ! time loop
943
944	#if defined( __dvrp_graphics )
945	CALL DVRP_LOG_EVENT( -2, current_timestep_number )
946	#endif
947
948	END SUBROUTINE time_integration

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