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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 1997-2020 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! ------------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: time_integration.f90 4668 2020-09-09 13:00:16Z pavelkrc $
27	! Improve debug messages during timestepping
28	!
29	! 4581 2020-06-29 08:49:58Z suehring
30	! Omit explicit pressure forcing via geostrophic wind components in case of
31	! mesoscale nesting.
32	!
33	! 4578 2020-06-25 15:43:32Z gronemeier
34	! bugfix: removed unused variables
35	!
36	! 4573 2020-06-24 13:08:47Z oliver.maas
37	! calculate pt(0) incrementally by using dt_3d instead of calculating it absolutely
38	! by using time_since_reference_point, because time_since_reference_point is set
39	! to zero for initializing_actions = 'cyclic_fill'
40	!
41	! 4565 2020-06-15 08:30:38Z oliver.maas
42	! added new surface temperature forcing method for bc_pt_b = 'dirichlet':
43	! surface temperature pt(0) can be linearly increased by pt_surface_heating_rate (in K/h)
44	!
45	! 4564 2020-06-12 14:03:36Z raasch
46	! Vertical nesting method of Huq et al. (2019) removed
47	!
48	! 4521 2020-05-06 11:39:49Z schwenkel
49	! Rename variable
50	!
51	! 4511 2020-04-30 12:20:40Z raasch
52	! chemistry decycling replaced by explicit setting of lateral boundary conditions
53	!
54	! 4508 2020-04-24 13:32:20Z raasch
55	! salsa decycling replaced by explicit setting of lateral boundary conditions
56	!
57	! 4502 2020-04-17 16:14:16Z schwenkel
58	! Implementation of ice microphysics
59	!
60	! 4472 2020-03-24 12:21:00Z Giersch
61	! OPENACC COPYIN directive for ddx and ddy added
62	!
63	! 4466 2020-03-20 16:14:41Z suehring
64	! Add advection fluxes to ACC copyin
65	!
66	! 4457 2020-03-11 14:20:43Z raasch
67	! use statement for exchange horiz added
68	!
69	! 4444 2020-03-05 15:59:50Z raasch
70	! bugfix: cpp-directives for serial mode added
71	!
72	! 4420 2020-02-24 14:13:56Z maronga
73	! Added output control for wind turbine model
74	!
75	! 4403 2020-02-12 13:08:46Z banzhafs
76	! Allowing both existing and on-demand emission read modes
77	!
78	! 4360 2020-01-07 11:25:50Z suehring
79	! Bugfix, hour_call_emis uninitialized at first call of time_integration
80	!
81	! 4346 2019-12-18 11:55:56Z motisi
82	! Introduction of wall_flags_total_0, which currently sets bits based on static
83	! topography information used in wall_flags_static_0
84	!
85	! 4329 2019-12-10 15:46:36Z motisi
86	! Renamed wall_flags_0 to wall_flags_static_0
87	!
88	! 4281 2019-10-29 15:15:39Z schwenkel
89	! Moved boundary conditions to module interface
90	!
91	! 4276 2019-10-28 16:03:29Z schwenkel
92	! Further modularization of lpm code components
93	!
94	! 4275 2019-10-28 15:34:55Z schwenkel
95	! Move call oft lpm to the end of intermediate timestep loop
96	!
97	! 4268 2019-10-17 11:29:38Z schwenkel
98	! Removing module specific boundary conditions an put them into their modules
99	!
100	! 4227 2019-09-10 18:04:34Z gronemeier
101	! implement new palm_date_time_mod
102	!
103	! 4226 2019-09-10 17:03:24Z suehring
104	! Changes in interface for the offline nesting
105	!
106	! 4182 2019-08-22 15:20:23Z scharf
107	! Corrected "Former revisions" section
108	!
109	! 4170 2019-08-19 17:12:31Z gronemeier
110	! copy diss, diss_p, tdiss_m to GPU
111	!
112	! 4144 2019-08-06 09:11:47Z raasch
113	! relational operators .EQ., .NE., etc. replaced by ==, /=, etc.
114	!
115	! 4126 2019-07-30 11:09:11Z gronemeier
116	! renamed routine to calculate uv exposure
117	!
118	! 4111 2019-07-22 18:16:57Z suehring
119	! advc_flags_1 / advc_flags_2 renamed to advc_flags_m / advc_flags_s
120	!
121	! 4069 2019-07-01 14:05:51Z Giersch
122	! Masked output running index mid has been introduced as a local variable to
123	! avoid runtime error (Loop variable has been modified) in time_integration
124	!
125	! 4064 2019-07-01 05:33:33Z gronemeier
126	! Moved call to radiation module out of intermediate time loop
127	!
128	! 4048 2019-06-21 21:00:21Z knoop
129	! Moved production_e_init call into turbulence_closure_mod
130	!
131	! 4047 2019-06-21 18:58:09Z knoop
132	! Added remainings of swap_timelevel upon its dissolution
133	!
134	! 4043 2019-06-18 16:59:00Z schwenkel
135	! Further LPM modularization
136	!
137	! 4039 2019-06-18 10:32:41Z suehring
138	! Rename subroutines in module for diagnostic quantities
139	!
140	! 4029 2019-06-14 14:04:35Z raasch
141	! exchange of ghost points and boundary conditions separated for chemical species and SALSA module,
142	! bugfix: decycling of chemistry species after nesting data transfer
143	!
144	! 4022 2019-06-12 11:52:39Z suehring
145	! Call synthetic turbulence generator at last RK3 substep right after boundary
146	! conditions are updated in offline nesting in order to assure that
147	! perturbations are always imposed
148	!
149	! 4017 2019-06-06 12:16:46Z schwenkel
150	! Mass (volume) flux correction included to ensure global mass conservation for child domains.
151	!
152	! 3994 2019-05-22 18:08:09Z suehring
153	! output of turbulence intensity added
154	!
155	! 3988 2019-05-22 11:32:37Z kanani
156	! Implement steerable output interval for virtual measurements
157	!
158	! 3968 2019-05-13 11:04:01Z suehring
159	! replace nspec_out with n_matched_vars
160	!
161	! 3929 2019-04-24 12:52:08Z banzhafs
162	! Reverse changes back from revision 3878: use chem_boundary_conds instead of
163	! chem_boundary_conds_decycle
164	!
165	!
166	! 3885 2019-04-11 11:29:34Z kanani
167	! Changes related to global restructuring of location messages and introduction
168	! of additional debug messages
169	!
170	! 3879 2019-04-08 20:25:23Z knoop
171	! Moved wtm_forces to module_interface_actions
172	!
173	! 3872 2019-04-08 15:03:06Z knoop
174	! Modifications made for salsa:
175	! - Call salsa_emission_update at each time step but do the checks within
176	! salsa_emission_update (i.e. skip_time_do_salsa >= time_since_reference_point
177	! and next_aero_emission_update <= time_since_reference_point ).
178	! - Renamed nbins --> nbins_aerosol, ncc_tot --> ncomponents_mass and
179	! ngast --> ngases_salsa and loop indices b, c and sg to ib, ic and ig
180	! - Apply nesting for salsa variables
181	! - Removed cpu_log calls speciffic for salsa.
182	!
183	! 3833 2019-03-28 15:04:04Z forkel
184	! added USE chem_gasphase_mod, replaced nspec by nspec since fixed compounds are not integrated
185	!
186	! 3820 2019-03-27 11:53:41Z forkel
187	! renamed do_emiss to emissions_anthropogenic (ecc)
188	!
189	!
190	! 3774 2019-03-04 10:52:49Z moh.hefny
191	! rephrase if statement to avoid unallocated array in case of
192	! nesting_offline is false (crashing during debug mode)
193	!
194	! 3761 2019-02-25 15:31:42Z raasch $
195	! module section re-formatted and openacc required variables moved to separate section,
196	! re-formatting to 100 char line width
197	!
198	! 3745 2019-02-15 18:57:56Z suehring
199	! Call indoor model after first timestep
200	!
201	! 3744 2019-02-15 18:38:58Z suehring
202	! - Moved call of bio_calculate_thermal_index_maps from biometeorology module to
203	! time_integration to make sure averaged input is updated before calculating.
204	!
205	! 3739 2019-02-13 08:05:17Z dom_dwd_user
206	! Removed everything related to "time_bio_results" as this is never used.
207	!
208	! 3724 2019-02-06 16:28:23Z kanani
209	! Correct double-used log_point_s unit
210	!
211	! 3719 2019-02-06 13:10:18Z kanani
212	! - removed wind_turbine cpu measurement, since same time is measured inside
213	! wtm_forces subroutine as special measures
214	! - moved the numerous vnest cpulog to special measures
215	! - extended radiation cpulog over entire radiation part,
216	! moved radiation_interactions cpulog to special measures
217	! - moved some cpu_log calls to this routine for better overview
218	!
219	! 3705 2019-01-29 19:56:39Z suehring
220	! Data output for virtual measurements added
221	!
222	! 3704 2019-01-29 19:51:41Z suehring
223	! Rename subroutines for surface-data output
224	!
225	! 3647 2019-01-02 14:10:44Z kanani
226	! Bugfix: add time_since_reference_point to IF clause for data_output calls
227	! (otherwise skip_time_* values don't come into affect with dt_do* = 0.0).
228	! Clean up indoor_model and biometeorology model call.
229	!
230	! Revision 1.1 1997/08/11 06:19:04 raasch
231	! Initial revision
232	!
233	!
234	! Description:
235	! ------------
236	!> Integration in time of the model equations, statistical analysis and graphic
237	!> output
238	!------------------------------------------------------------------------------!
239	SUBROUTINE time_integration
240
241
242	USE advec_ws, &
243	ONLY: ws_statistics
244
245	USE arrays_3d, &
246	ONLY: diss, diss_p, dzu, e_p, nc_p, ni_p, nr_p, prho, pt, pt_p, pt_init, q, qc_p, qr_p, &
247	q_init, q_p, qi_p, ref_state, rho_ocean, sa_p, s_p, tend, u, u_p, v, vpt, v_p, w_p
248
249	#if defined( __parallel ) && ! defined( _OPENACC )
250	USE arrays_3d, &
251	ONLY: e, nc, ni, nr, qc, qi, qr, s, w
252	#endif
253
254	USE biometeorology_mod, &
255	ONLY: bio_calculate_thermal_index_maps, thermal_comfort, bio_calculate_uv_exposure, &
256	uv_exposure
257
258	USE bulk_cloud_model_mod, &
259	ONLY: bulk_cloud_model, calc_liquid_water_content, collision_turbulence, &
260	microphysics_ice_phase, microphysics_morrison, microphysics_seifert
261
262	USE calc_mean_profile_mod, &
263	ONLY: calc_mean_profile
264
265	USE chem_emissions_mod, &
266	ONLY: chem_emissions_setup, chem_emissions_update_on_demand
267
268	USE chem_gasphase_mod, &
269	ONLY: nvar
270
271	USE chem_modules, &
272	ONLY: bc_cs_t_val, chem_species, communicator_chem, emissions_anthropogenic, &
273	emiss_read_legacy_mode, n_matched_vars
274
275	USE control_parameters, &
276	ONLY: advected_distance_x, advected_distance_y, air_chemistry, average_count_3d, &
277	averaging_interval, averaging_interval_pr, bc_lr_cyc, bc_ns_cyc, bc_pt_t_val, &
278	bc_q_t_val, biometeorology, call_psolver_at_all_substeps, child_domain, &
279	constant_flux_layer, constant_heatflux, create_disturbances, &
280	dopr_n, constant_diffusion, coupling_mode, coupling_start_time, &
281	current_timestep_number, debug_output_timestep, debug_string, &
282	disturbance_created, disturbance_energy_limit, dist_range, &
283	do_sum, dt_3d, dt_averaging_input, dt_averaging_input_pr, dt_coupling, &
284	dt_data_output_av, dt_disturb, dt_do2d_xy, dt_do2d_xz, dt_do2d_yz, dt_do3d, &
285	dt_domask,dt_dopts, dt_dopr, dt_dopr_listing, dt_dots, dt_run_control, &
286	end_time, first_call_lpm, first_call_mas, galilei_transformation, humidity, &
287	indoor_model, intermediate_timestep_count, intermediate_timestep_count_max, &
288	land_surface, large_scale_forcing, loop_optimization, lsf_surf, lsf_vert, masks, &
289	multi_agent_system_end, multi_agent_system_start, nesting_offline, neutral, &
290	nr_timesteps_this_run, nudging, ocean_mode, passive_scalar, pt_reference, &
291	pt_slope_offset, pt_surface_heating_rate, &
292	random_heatflux, rans_tke_e, run_coupled, salsa, &
293	simulated_time, simulated_time_chr, skip_time_do2d_xy, skip_time_do2d_xz, &
294	skip_time_do2d_yz, skip_time_do3d, skip_time_domask, skip_time_dopr, &
295	skip_time_data_output_av, sloping_surface, stop_dt, surface_output, &
296	terminate_coupled, terminate_run, timestep_scheme, time_coupling, time_do2d_xy, &
297	time_do2d_xz, time_do2d_yz, time_do3d, time_domask, time_dopr, time_dopr_av, &
298	time_dopr_listing, time_dopts, time_dosp, time_dosp_av, time_dots, time_do_av, &
299	time_do_sla, time_disturb, time_run_control, time_since_reference_point, &
300	timestep_count, turbulent_inflow, turbulent_outflow, urban_surface, &
301	use_initial_profile_as_reference, use_single_reference_value, u_gtrans, v_gtrans, &
302	virtual_flight, virtual_measurement, ws_scheme_mom, ws_scheme_sca
303
304	#if defined( __parallel )
305	USE control_parameters, &
306	ONLY: rans_mode
307	#endif
308
309	USE cpulog, &
310	ONLY: cpu_log, log_point, log_point_s
311
312	USE diagnostic_output_quantities_mod, &
313	ONLY: doq_calculate, &
314	timestep_number_at_prev_calc
315
316	USE exchange_horiz_mod, &
317	ONLY: exchange_horiz
318
319	USE flight_mod, &
320	ONLY: flight_measurement
321
322	USE grid_variables, &
323	ONLY: ddx, ddy
324
325	USE indices, &
326	ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, nzb, nzt
327
328	USE indoor_model_mod, &
329	ONLY: dt_indoor, im_main_heatcool, time_indoor
330
331	USE interfaces
332
333	USE kinds
334
335	USE land_surface_model_mod, &
336	ONLY: lsm_boundary_condition, lsm_energy_balance, lsm_soil_model, skip_time_do_lsm
337
338	USE lagrangian_particle_model_mod, &
339	ONLY: lpm_data_output_ptseries
340
341	USE lsf_nudging_mod, &
342	ONLY: calc_tnudge, ls_forcing_surf, ls_forcing_vert, nudge_ref
343
344	USE module_interface, &
345	ONLY: module_interface_actions, module_interface_swap_timelevel, &
346	module_interface_boundary_conditions
347
348	USE multi_agent_system_mod, &
349	ONLY: agents_active, multi_agent_system
350
351	USE nesting_offl_mod, &
352	ONLY: nesting_offl_bc, &
353	nesting_offl_input, &
354	nesting_offl_interpolation_factor, &
355	nesting_offl_mass_conservation
356
357	USE netcdf_data_input_mod, &
358	ONLY: chem_emis, chem_emis_att
359
360	USE ocean_mod, &
361	ONLY: prho_reference
362
363	USE palm_date_time_mod, &
364	ONLY: get_date_time
365
366	USE particle_attributes, &
367	ONLY: particle_advection, particle_advection_start, use_sgs_for_particles, wang_kernel
368
369	USE pegrid
370
371	#if defined( __parallel )
372	USE pmc_interface, &
373	ONLY: nested_run, nesting_mode, pmci_boundary_conds, pmci_datatrans, pmci_synchronize, &
374	pmci_ensure_nest_mass_conservation, pmci_ensure_nest_mass_conservation_vertical, &
375	pmci_set_swaplevel
376	#endif
377
378	USE progress_bar, &
379	ONLY: finish_progress_bar, output_progress_bar
380
381	USE prognostic_equations_mod, &
382	ONLY: prognostic_equations_cache, prognostic_equations_vector
383
384	USE radiation_model_mod, &
385	ONLY: dt_radiation, force_radiation_call, radiation, radiation_control, &
386	radiation_interaction, radiation_interactions, skip_time_do_radiation, time_radiation
387
388	USE salsa_mod, &
389	ONLY: aerosol_number, aerosol_mass, bc_am_t_val, bc_an_t_val, bc_gt_t_val, &
390	communicator_salsa, nbins_aerosol, ncomponents_mass, ngases_salsa, &
391	salsa_boundary_conditions, salsa_emission_update, salsa_gas, salsa_gases_from_chem, &
392	skip_time_do_salsa
393
394	USE spectra_mod, &
395	ONLY: average_count_sp, averaging_interval_sp, calc_spectra, dt_dosp, skip_time_dosp
396
397	USE statistics, &
398	ONLY: flow_statistics_called, hom, pr_palm, sums_ls_l
399
400
401	USE surface_layer_fluxes_mod, &
402	ONLY: surface_layer_fluxes
403
404	USE surface_data_output_mod, &
405	ONLY: average_count_surf, averaging_interval_surf, dt_dosurf, dt_dosurf_av, &
406	surface_data_output, surface_data_output_averaging, skip_time_dosurf, &
407	skip_time_dosurf_av, time_dosurf, time_dosurf_av
408
409	USE surface_mod, &
410	ONLY: surf_def_h, surf_lsm_h, surf_usm_h
411
412	USE synthetic_turbulence_generator_mod, &
413	ONLY: dt_stg_call, dt_stg_adjust, parametrize_inflow_turbulence, stg_adjust, stg_main, &
414	time_stg_adjust, time_stg_call, use_syn_turb_gen
415
416	USE turbulence_closure_mod, &
417	ONLY: tcm_diffusivities
418
419	USE urban_surface_mod, &
420	ONLY: usm_boundary_condition, usm_material_heat_model, usm_material_model, &
421	usm_surface_energy_balance, usm_green_heat_model
422
423	USE virtual_measurement_mod, &
424	ONLY: dt_virtual_measurement, &
425	time_virtual_measurement, &
426	vm_data_output, &
427	vm_sampling, &
428	vm_time_start
429
430
431	USE wind_turbine_model_mod, &
432	ONLY: dt_data_output_wtm, time_wtm, wind_turbine, wtm_data_output
433
434	#if defined( _OPENACC )
435	USE arrays_3d, &
436	ONLY: d, dd2zu, ddzu, ddzw, &
437	diss_l_u, &
438	diss_l_v, &
439	diss_l_w, &
440	diss_s_u, &
441	diss_s_v, &
442	diss_s_w, &
443	drho_air, drho_air_zw, dzw, e, &
444	flux_l_u, &
445	flux_l_v, &
446	flux_l_w, &
447	flux_s_u, &
448	flux_s_v, &
449	flux_s_w, &
450	heatflux_output_conversion, &
451	kh, km, momentumflux_output_conversion, nc, ni, nr, p, ptdf_x, ptdf_y, qc, qi, qr, rdf, &
452	rdf_sc, rho_air, rho_air_zw, s, tdiss_m, te_m, tpt_m, tu_m, tv_m, tw_m, ug, u_init, &
453	u_stokes_zu, vg, v_init, v_stokes_zu, w, zu
454
455	USE control_parameters, &
456	ONLY: tsc
457
458	USE indices, &
459	ONLY: advc_flags_m, advc_flags_s, nyn, nyng, nys, nysg, nz, nzb_max, wall_flags_total_0
460
461	USE statistics, &
462	ONLY: rmask, statistic_regions, sums_l, sums_l_l, sums_us2_ws_l, &
463	sums_wsus_ws_l, sums_vs2_ws_l, sums_wsvs_ws_l, sums_ws2_ws_l, sums_wspts_ws_l, &
464	sums_wsqs_ws_l, sums_wssas_ws_l, sums_wsqcs_ws_l, sums_wsqrs_ws_l, sums_wsncs_ws_l, &
465	sums_wsnrs_ws_l, sums_wsss_ws_l, weight_substep, sums_salsa_ws_l, sums_wsqis_ws_l, &
466	sums_wsnis_ws_l
467
468	USE surface_mod, &
469	ONLY: bc_h, enter_surface_arrays, exit_surface_arrays
470	#endif
471
472
473	IMPLICIT NONE
474
475	CHARACTER (LEN=9) :: time_to_string !<
476
477	INTEGER(iwp) :: hour !< hour of current time
478	INTEGER(iwp) :: hour_call_emis = -1 !< last hour where emission was called
479	INTEGER(iwp) :: ib !< index for aerosol size bins
480	INTEGER(iwp) :: ic !< index for aerosol mass bins
481	INTEGER(iwp) :: icc !< additional index for aerosol mass bins
482	INTEGER(iwp) :: ig !< index for salsa gases
483	INTEGER(iwp) :: mid !< masked output running index
484	INTEGER(iwp) :: n !< loop counter for chemistry species
485
486	REAL(wp) :: dt_3d_old !< temporary storage of timestep to be used for
487	!< steering of run control output interval
488	REAL(wp) :: time_since_reference_point_save !< original value of
489	!< time_since_reference_point
490
491
492	!
493	!-- Copy data from arrays_3d
494	!$ACC DATA &
495	!$ACC COPY(d(nzb+1:nzt,nys:nyn,nxl:nxr)) &
496	!$ACC COPY(diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
497	!$ACC COPY(e(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
498	!$ACC COPY(u(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
499	!$ACC COPY(v(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
500	!$ACC COPY(w(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
501	!$ACC COPY(kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
502	!$ACC COPY(km(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
503	!$ACC COPY(p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
504	!$ACC COPY(pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg))
505
506	!$ACC DATA &
507	!$ACC COPYIN(diss_l_u(0:nz+1,nys:nyn,0), flux_l_u(0:nz+1,nys:nyn,0)) &
508	!$ACC COPYIN(diss_l_v(0:nz+1,nys:nyn,0), flux_l_v(0:nz+1,nys:nyn,0)) &
509	!$ACC COPYIN(diss_l_w(0:nz+1,nys:nyn,0), flux_l_w(0:nz+1,nys:nyn,0)) &
510	!$ACC COPYIN(diss_s_u(0:nz+1,0), flux_s_u(0:nz+1,0)) &
511	!$ACC COPYIN(diss_s_v(0:nz+1,0), flux_s_v(0:nz+1,0)) &
512	!$ACC COPYIN(diss_s_w(0:nz+1,0), flux_s_w(0:nz+1,0)) &
513	!$ACC COPY(diss_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
514	!$ACC COPY(e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
515	!$ACC COPY(u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
516	!$ACC COPY(v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
517	!$ACC COPY(w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
518	!$ACC COPY(pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
519	!$ACC COPY(tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
520	!$ACC COPY(tdiss_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
521	!$ACC COPY(te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
522	!$ACC COPY(tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
523	!$ACC COPY(tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
524	!$ACC COPY(tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
525	!$ACC COPY(tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg))
526
527	!$ACC DATA &
528	!$ACC COPYIN(rho_air(nzb:nzt+1), drho_air(nzb:nzt+1)) &
529	!$ACC COPYIN(rho_air_zw(nzb:nzt+1), drho_air_zw(nzb:nzt+1)) &
530	!$ACC COPYIN(zu(nzb:nzt+1)) &
531	!$ACC COPYIN(dzu(1:nzt+1), dzw(1:nzt+1)) &
532	!$ACC COPYIN(ddzu(1:nzt+1), dd2zu(1:nzt)) &
533	!$ACC COPYIN(ddzw(1:nzt+1)) &
534	!$ACC COPYIN(heatflux_output_conversion(nzb:nzt+1)) &
535	!$ACC COPYIN(momentumflux_output_conversion(nzb:nzt+1)) &
536	!$ACC COPYIN(rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt)) &
537	!$ACC COPYIN(ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng)) &
538	!$ACC COPYIN(ref_state(0:nz+1)) &
539	!$ACC COPYIN(u_init(0:nz+1), v_init(0:nz+1)) &
540	!$ACC COPYIN(u_stokes_zu(nzb:nzt+1), v_stokes_zu(nzb:nzt+1)) &
541	!$ACC COPYIN(pt_init(0:nz+1)) &
542	!$ACC COPYIN(ug(0:nz+1), vg(0:nz+1))
543
544	!
545	!-- Copy data from control_parameters
546	!$ACC DATA &
547	!$ACC COPYIN(tsc(1:5))
548
549	!
550	!-- Copy data from grid_variables
551	!$ACC DATA &
552	!$ACC COPYIN(ddx, ddy)
553
554	!
555	!-- Copy data from indices
556	!$ACC DATA &
557	!$ACC COPYIN(advc_flags_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
558	!$ACC COPYIN(advc_flags_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
559	!$ACC COPYIN(wall_flags_total_0(nzb:nzt+1,nysg:nyng,nxlg:nxrg))
560
561	!
562	!-- Copy data from surface_mod
563	!$ACC DATA &
564	!$ACC COPYIN(bc_h(0:1)) &
565	!$ACC COPYIN(bc_h(0)%i(1:bc_h(0)%ns)) &
566	!$ACC COPYIN(bc_h(0)%j(1:bc_h(0)%ns)) &
567	!$ACC COPYIN(bc_h(0)%k(1:bc_h(0)%ns)) &
568	!$ACC COPYIN(bc_h(1)%i(1:bc_h(1)%ns)) &
569	!$ACC COPYIN(bc_h(1)%j(1:bc_h(1)%ns)) &
570	!$ACC COPYIN(bc_h(1)%k(1:bc_h(1)%ns))
571
572	!
573	!-- Copy data from statistics
574	!$ACC DATA &
575	!$ACC COPYIN(hom(0:nz+1,1:2,1:4,0)) &
576	!$ACC COPYIN(rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions)) &
577	!$ACC COPYIN(weight_substep(1:intermediate_timestep_count_max)) &
578	!$ACC COPY(sums_l(nzb:nzt+1,1:pr_palm,0)) &
579	!$ACC COPY(sums_l_l(nzb:nzt+1,0:statistic_regions,0)) &
580	!$ACC COPY(sums_us2_ws_l(nzb:nzt+1,0)) &
581	!$ACC COPY(sums_wsus_ws_l(nzb:nzt+1,0)) &
582	!$ACC COPY(sums_vs2_ws_l(nzb:nzt+1,0)) &
583	!$ACC COPY(sums_wsvs_ws_l(nzb:nzt+1,0)) &
584	!$ACC COPY(sums_ws2_ws_l(nzb:nzt+1,0)) &
585	!$ACC COPY(sums_wspts_ws_l(nzb:nzt+1,0)) &
586	!$ACC COPY(sums_wssas_ws_l(nzb:nzt+1,0)) &
587	!$ACC COPY(sums_wsqs_ws_l(nzb:nzt+1,0)) &
588	!$ACC COPY(sums_wsqcs_ws_l(nzb:nzt+1,0)) &
589	!$ACC COPY(sums_wsqis_ws_l(nzb:nzt+1,0)) &
590	!$ACC COPY(sums_wsqrs_ws_l(nzb:nzt+1,0)) &
591	!$ACC COPY(sums_wsncs_ws_l(nzb:nzt+1,0)) &
592	!$ACC COPY(sums_wsnis_ws_l(nzb:nzt+1,0)) &
593	!$ACC COPY(sums_wsnrs_ws_l(nzb:nzt+1,0)) &
594	!$ACC COPY(sums_wsss_ws_l(nzb:nzt+1,0)) &
595	!$ACC COPY(sums_salsa_ws_l(nzb:nzt+1,0))
596
597	!
598	!-- Next statement is to avoid compiler warnings about unused variables. Please
599	!-- remove in case that you are using them. ddx and ddy need to be defined in
600	!-- time_integration because of ACC COPYIN directive.
601	ddx = ddx
602	ddy = ddy
603
604	#if defined( _OPENACC )
605	CALL enter_surface_arrays
606	#endif
607
608	!
609	!-- At beginning determine the first time step
610	CALL timestep
611
612	#if defined( __parallel )
613	!
614	!-- Synchronize the timestep in case of nested run.
615	IF ( nested_run ) THEN
616	!
617	!-- Synchronization by unifying the time step.
618	!-- Global minimum of all time-steps is used for all.
619	CALL pmci_synchronize
620	ENDIF
621	#endif
622
623	!
624	!-- Determine and print out the run control quantities before the first time
625	!-- step of this run. For the initial run, some statistics (e.g. divergence)
626	!-- need to be determined first --> CALL flow_statistics at the beginning of
627	!-- run_control
628	CALL run_control
629	!
630	!-- Data exchange between coupled models in case that a call has been omitted
631	!-- at the end of the previous run of a job chain.
632	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
633	!
634	!-- In case of model termination initiated by the local model the coupler
635	!-- must not be called because this would again cause an MPI hang.
636	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
637	CALL surface_coupler
638	time_coupling = time_coupling - dt_coupling
639	ENDDO
640	IF (time_coupling == 0.0_wp .AND. time_since_reference_point < dt_coupling ) THEN
641	time_coupling = time_since_reference_point
642	ENDIF
643	ENDIF
644
645	CALL location_message( 'atmosphere (and/or ocean) time-stepping', 'start' )
646
647	!
648	!-- Start of the time loop
649	DO WHILE ( simulated_time < end_time .AND. .NOT. stop_dt .AND. .NOT. terminate_run )
650
651	CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
652
653	IF ( debug_output_timestep ) THEN
654	WRITE( debug_string, * ) 'time_integration', simulated_time
655	CALL debug_message( debug_string, 'start' )
656	ENDIF
657
658	!
659	!-- Determine ug, vg and w_subs in dependence on data from external file
660	!-- LSF_DATA
661	IF ( large_scale_forcing .AND. lsf_vert ) THEN
662	CALL ls_forcing_vert ( simulated_time )
663	sums_ls_l = 0.0_wp
664	ENDIF
665
666	!
667	!-- Set pt_init and q_init to the current profiles taken from
668	!-- NUDGING_DATA
669	IF ( nudging ) THEN
670	CALL nudge_ref ( simulated_time )
671	!
672	!-- Store temperature gradient at the top boundary for possible Neumann
673	!-- boundary condition
674	bc_pt_t_val = ( pt_init(nzt+1) - pt_init(nzt) ) / dzu(nzt+1)
675	bc_q_t_val = ( q_init(nzt+1) - q_init(nzt) ) / dzu(nzt+1)
676	IF ( air_chemistry ) THEN
677	DO n = 1, nvar
678	bc_cs_t_val = ( chem_species(n)%conc_pr_init(nzt+1) &
679	- chem_species(n)%conc_pr_init(nzt) ) &
680	/ dzu(nzt+1)
681	ENDDO
682	ENDIF
683	IF ( salsa .AND. time_since_reference_point >= skip_time_do_salsa ) THEN
684	DO ib = 1, nbins_aerosol
685	bc_an_t_val = ( aerosol_number(ib)%init(nzt+1) - aerosol_number(ib)%init(nzt) ) / &
686	dzu(nzt+1)
687	DO ic = 1, ncomponents_mass
688	icc = ( ic - 1 ) * nbins_aerosol + ib
689	bc_am_t_val = ( aerosol_mass(icc)%init(nzt+1) - aerosol_mass(icc)%init(nzt) ) /&
690	dzu(nzt+1)
691	ENDDO
692	ENDDO
693	IF ( .NOT. salsa_gases_from_chem ) THEN
694	DO ig = 1, ngases_salsa
695	bc_gt_t_val = ( salsa_gas(ig)%init(nzt+1) - salsa_gas(ig)%init(nzt) ) / &
696	dzu(nzt+1)
697	ENDDO
698	ENDIF
699	ENDIF
700	ENDIF
701	!
702	!-- Input of boundary data.
703	IF ( nesting_offline ) CALL nesting_offl_input
704	!
705	!-- Execute all other module actions routines
706	CALL module_interface_actions( 'before_timestep' )
707
708	!
709	!-- Start of intermediate step loop
710	intermediate_timestep_count = 0
711	DO WHILE ( intermediate_timestep_count < intermediate_timestep_count_max )
712
713	intermediate_timestep_count = intermediate_timestep_count + 1
714
715	!
716	!-- Set the steering factors for the prognostic equations which depend
717	!-- on the timestep scheme
718	CALL timestep_scheme_steering
719
720	!
721	!-- Calculate those variables needed in the tendency terms which need
722	!-- global communication
723	IF ( .NOT. use_single_reference_value .AND. .NOT. use_initial_profile_as_reference ) &
724	THEN
725	!
726	!-- Horizontally averaged profiles to be used as reference state in
727	!-- buoyancy terms (WARNING: only the respective last call of
728	!-- calc_mean_profile defines the reference state!)
729	IF ( .NOT. neutral ) THEN
730	CALL calc_mean_profile( pt, 4 )
731	ref_state(:) = hom(:,1,4,0) ! this is used in the buoyancy term
732	ENDIF
733	IF ( ocean_mode ) THEN
734	CALL calc_mean_profile( rho_ocean, 64 )
735	ref_state(:) = hom(:,1,64,0)
736	ENDIF
737	IF ( humidity ) THEN
738	CALL calc_mean_profile( vpt, 44 )
739	ref_state(:) = hom(:,1,44,0)
740	ENDIF
741	!
742	!-- Assure that ref_state does not become zero at any level
743	!-- ( might be the case if a vertical level is completely occupied
744	!-- with topography ).
745	ref_state = MERGE( MAXVAL(ref_state), ref_state, ref_state == 0.0_wp )
746	ENDIF
747
748	IF ( ( ws_scheme_mom .OR. ws_scheme_sca ) .AND. intermediate_timestep_count == 1 ) &
749	THEN
750	CALL ws_statistics
751	ENDIF
752	!
753	!-- In case of nudging calculate current nudging time scale and horizontal
754	!-- means of u, v, pt and q
755	IF ( nudging ) THEN
756	CALL calc_tnudge( simulated_time )
757	CALL calc_mean_profile( u, 1 )
758	CALL calc_mean_profile( v, 2 )
759	CALL calc_mean_profile( pt, 4 )
760	CALL calc_mean_profile( q, 41 )
761	ENDIF
762	!
763	!-- Execute all other module actions routunes
764	CALL module_interface_actions( 'before_prognostic_equations' )
765	!
766	!-- Solve the prognostic equations. A fast cache optimized version with
767	!-- only one single loop is used in case of Piascek-Williams advection
768	!-- scheme. NEC vector machines use a different version, because
769	!-- in the other versions a good vectorization is prohibited due to
770	!-- inlining problems.
771	IF ( loop_optimization == 'cache' ) THEN
772	CALL prognostic_equations_cache
773	ELSEIF ( loop_optimization == 'vector' ) THEN
774	CALL prognostic_equations_vector
775	ENDIF
776
777	!
778	!-- Movement of agents in multi agent system
779	IF ( agents_active .AND. time_since_reference_point >= multi_agent_system_start .AND. &
780	time_since_reference_point <= multi_agent_system_end .AND. &
781	intermediate_timestep_count == 1 ) &
782	THEN
783	CALL multi_agent_system
784	first_call_mas = .FALSE.
785	ENDIF
786
787	!
788	!-- Exchange of ghost points (lateral boundary conditions)
789	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
790
791	CALL exchange_horiz( u_p, nbgp )
792	CALL exchange_horiz( v_p, nbgp )
793	CALL exchange_horiz( w_p, nbgp )
794	CALL exchange_horiz( pt_p, nbgp )
795	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
796	IF ( rans_tke_e .OR. wang_kernel .OR. collision_turbulence &
797	.OR. use_sgs_for_particles ) THEN
798	IF ( rans_tke_e ) THEN
799	CALL exchange_horiz( diss_p, nbgp )
800	ELSE
801	CALL exchange_horiz( diss, nbgp )
802	ENDIF
803	ENDIF
804	IF ( ocean_mode ) THEN
805	CALL exchange_horiz( sa_p, nbgp )
806	CALL exchange_horiz( rho_ocean, nbgp )
807	CALL exchange_horiz( prho, nbgp )
808	ENDIF
809	IF ( humidity ) THEN
810	CALL exchange_horiz( q_p, nbgp )
811	IF ( bulk_cloud_model .AND. microphysics_morrison ) THEN
812	CALL exchange_horiz( qc_p, nbgp )
813	CALL exchange_horiz( nc_p, nbgp )
814	ENDIF
815	IF ( bulk_cloud_model .AND. microphysics_seifert ) THEN
816	CALL exchange_horiz( qr_p, nbgp )
817	CALL exchange_horiz( nr_p, nbgp )
818	ENDIF
819	IF ( bulk_cloud_model .AND. microphysics_ice_phase ) THEN
820	CALL exchange_horiz( qi_p, nbgp )
821	CALL exchange_horiz( ni_p, nbgp )
822	ENDIF
823	ENDIF
824	IF ( passive_scalar ) CALL exchange_horiz( s_p, nbgp )
825	IF ( air_chemistry ) THEN
826	DO n = 1, nvar
827	CALL exchange_horiz( chem_species(n)%conc_p, nbgp, &
828	alternative_communicator = communicator_chem )
829	ENDDO
830	ENDIF
831
832	IF ( salsa .AND. time_since_reference_point >= skip_time_do_salsa ) THEN
833	DO ib = 1, nbins_aerosol
834	CALL exchange_horiz( aerosol_number(ib)%conc_p, nbgp, &
835	alternative_communicator = communicator_salsa )
836	DO ic = 1, ncomponents_mass
837	icc = ( ic - 1 ) * nbins_aerosol + ib
838	CALL exchange_horiz( aerosol_mass(icc)%conc_p, nbgp, &
839	alternative_communicator = communicator_salsa )
840	ENDDO
841	ENDDO
842	IF ( .NOT. salsa_gases_from_chem ) THEN
843	DO ig = 1, ngases_salsa
844	CALL exchange_horiz( salsa_gas(ig)%conc_p, nbgp, &
845	alternative_communicator = communicator_salsa )
846	ENDDO
847	ENDIF
848	ENDIF
849
850	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
851
852	!
853	!-- Boundary conditions for the prognostic quantities (except of the
854	!-- velocities at the outflow in case of a non-cyclic lateral wall) and
855	!-- boundary conditions for module-specific variables
856	CALL module_interface_boundary_conditions
857
858	!
859	!-- Incrementing timestep counter
860	timestep_count = timestep_count + 1
861
862	CALL cpu_log( log_point(28), 'swap_timelevel', 'start' )
863	!
864	!-- Set the swap level for all modules
865	CALL module_interface_swap_timelevel( MOD( timestep_count, 2) )
866
867	#if defined( __parallel )
868	!
869	!-- Set the swap level for steering the pmc data transfer
870	IF ( nested_run ) CALL pmci_set_swaplevel( MOD( timestep_count, 2) + 1 ) !> @todo: why the +1 ?
871	#endif
872
873	CALL cpu_log( log_point(28), 'swap_timelevel', 'stop' )
874
875	#if defined( __parallel )
876	IF ( nested_run ) THEN
877
878	CALL cpu_log( log_point(60), 'nesting', 'start' )
879	!
880	!-- Domain nesting. The data transfer subroutines pmci_parent_datatrans
881	!-- and pmci_child_datatrans are called inside the wrapper
882	!-- subroutine pmci_datatrans according to the control parameters
883	!-- nesting_mode and nesting_datatransfer_mode.
884	!-- TO_DO: why is nesting_mode given as a parameter here?
885	CALL pmci_datatrans( nesting_mode )
886
887	IF ( TRIM( nesting_mode ) == 'two-way' .OR. nesting_mode == 'vertical' ) THEN
888
889	CALL cpu_log( log_point_s(92), 'exchange-horiz-nest', 'start' )
890	!
891	!-- Exchange_horiz is needed for all parent-domains after the
892	!-- anterpolation
893	CALL exchange_horiz( u, nbgp )
894	CALL exchange_horiz( v, nbgp )
895	CALL exchange_horiz( w, nbgp )
896	IF ( .NOT. neutral ) CALL exchange_horiz( pt, nbgp )
897
898	IF ( humidity ) THEN
899
900	CALL exchange_horiz( q, nbgp )
901
902	IF ( bulk_cloud_model .AND. microphysics_morrison ) THEN
903	CALL exchange_horiz( qc, nbgp )
904	CALL exchange_horiz( nc, nbgp )
905	ENDIF
906	IF ( bulk_cloud_model .AND. microphysics_seifert ) THEN
907	CALL exchange_horiz( qr, nbgp )
908	CALL exchange_horiz( nr, nbgp )
909	ENDIF
910	IF ( bulk_cloud_model .AND. microphysics_ice_phase ) THEN
911	CALL exchange_horiz( qi, nbgp )
912	CALL exchange_horiz( ni, nbgp )
913	ENDIF
914
915	ENDIF
916
917	IF ( passive_scalar ) CALL exchange_horiz( s, nbgp )
918
919	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e, nbgp )
920
921	IF ( .NOT. constant_diffusion .AND. rans_mode .AND. rans_tke_e ) THEN
922	CALL exchange_horiz( diss, nbgp )
923	ENDIF
924
925	IF ( air_chemistry ) THEN
926	DO n = 1, nvar
927	CALL exchange_horiz( chem_species(n)%conc, nbgp, &
928	alternative_communicator = communicator_chem )
929	ENDDO
930	ENDIF
931
932	IF ( salsa .AND. time_since_reference_point >= skip_time_do_salsa ) THEN
933	DO ib = 1, nbins_aerosol
934	CALL exchange_horiz( aerosol_number(ib)%conc, nbgp, &
935	alternative_communicator = communicator_salsa )
936	DO ic = 1, ncomponents_mass
937	icc = ( ic - 1 ) * nbins_aerosol + ib
938	CALL exchange_horiz( aerosol_mass(icc)%conc, nbgp, &
939	alternative_communicator = communicator_salsa )
940	ENDDO
941	ENDDO
942	IF ( .NOT. salsa_gases_from_chem ) THEN
943	DO ig = 1, ngases_salsa
944	CALL exchange_horiz( salsa_gas(ig)%conc, nbgp, &
945	alternative_communicator = communicator_salsa )
946	ENDDO
947	ENDIF
948	ENDIF
949	CALL cpu_log( log_point_s(92), 'exchange-horiz-nest', 'stop' )
950
951	ENDIF
952
953	!
954	!-- Set boundary conditions again after interpolation and anterpolation.
955	CALL pmci_boundary_conds
956
957	CALL cpu_log( log_point(60), 'nesting', 'stop' )
958
959	ENDIF
960	#endif
961
962	!
963	!-- Temperature offset must be imposed at cyclic boundaries in x-direction
964	!-- when a sloping surface is used
965	IF ( sloping_surface ) THEN
966	IF ( nxl == 0 ) pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - pt_slope_offset
967	IF ( nxr == nx ) pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + pt_slope_offset
968	ENDIF
969
970	!
971	!-- Increase temperature pt(0) according to pt_surface_heating_rate (convert from K/h to K/s)
972	IF ( pt_surface_heating_rate /= 0.0_wp .AND. intermediate_timestep_count == 1 ) THEN
973	pt(0,:,:) = pt(0,:,:) + dt_3d * pt_surface_heating_rate / 3600.0_wp
974	ENDIF
975
976	!
977	!-- Impose a turbulent inflow using the recycling method
978	IF ( turbulent_inflow ) CALL inflow_turbulence
979
980	!
981	!-- Set values at outflow boundary using the special outflow condition
982	IF ( turbulent_outflow ) CALL outflow_turbulence
983
984	!
985	!-- Impose a random perturbation on the horizontal velocity field
986	IF ( create_disturbances .AND. ( call_psolver_at_all_substeps .AND. &
987	intermediate_timestep_count == intermediate_timestep_count_max ) &
988	.OR. ( .NOT. call_psolver_at_all_substeps .AND. intermediate_timestep_count == 1 ) ) &
989	THEN
990	time_disturb = time_disturb + dt_3d
991	IF ( time_disturb >= dt_disturb ) THEN
992	IF ( disturbance_energy_limit /= 0.0_wp .AND. &
993	hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit ) THEN
994	CALL disturb_field( 'u', tend, u )
995	CALL disturb_field( 'v', tend, v )
996	ELSEIF ( ( .NOT. bc_lr_cyc .OR. .NOT. bc_ns_cyc ) &
997	.AND. .NOT. child_domain .AND. .NOT. nesting_offline ) &
998	THEN
999	!
1000	!-- Runs with a non-cyclic lateral wall need perturbations
1001	!-- near the inflow throughout the whole simulation
1002	dist_range = 1
1003	CALL disturb_field( 'u', tend, u )
1004	CALL disturb_field( 'v', tend, v )
1005	dist_range = 0
1006	ENDIF
1007	time_disturb = time_disturb - dt_disturb
1008	ENDIF
1009	ENDIF
1010
1011	!
1012	!-- Map forcing data derived from larger scale model onto domain
1013	!-- boundaries. Further, update geostrophic wind components.
1014	IF ( nesting_offline .AND. intermediate_timestep_count == &
1015	intermediate_timestep_count_max ) THEN
1016	!-- Determine interpolation factor before boundary conditions and geostrophic wind
1017	!-- is updated.
1018	CALL nesting_offl_interpolation_factor
1019	CALL nesting_offl_bc
1020	! CALL nesting_offl_geostrophic_wind
1021	ENDIF
1022	!
1023	!-- Impose a turbulent inflow using synthetic generated turbulence.
1024	IF ( use_syn_turb_gen .AND. &
1025	intermediate_timestep_count == intermediate_timestep_count_max ) THEN
1026	CALL cpu_log( log_point(57), 'synthetic_turbulence_gen', 'start' )
1027	CALL stg_main
1028	CALL cpu_log( log_point(57), 'synthetic_turbulence_gen', 'stop' )
1029	ENDIF
1030	!
1031	!-- Ensure mass conservation. This need to be done after imposing
1032	!-- synthetic turbulence and top boundary condition for pressure is set to
1033	!-- Neumann conditions.
1034	!-- Is this also required in case of Dirichlet?
1035	IF ( nesting_offline ) CALL nesting_offl_mass_conservation
1036	!
1037	!-- Reduce the velocity divergence via the equation for perturbation
1038	!-- pressure.
1039	IF ( intermediate_timestep_count == 1 .OR. call_psolver_at_all_substeps ) THEN
1040
1041	#if defined( __parallel )
1042	!
1043	!-- Mass (volume) flux correction to ensure global mass conservation for child domains.
1044	IF ( child_domain ) THEN
1045	IF ( nesting_mode == 'vertical' ) THEN
1046	CALL pmci_ensure_nest_mass_conservation_vertical
1047	ELSE
1048	CALL pmci_ensure_nest_mass_conservation
1049	ENDIF
1050	ENDIF
1051	#endif
1052	CALL pres
1053
1054	ENDIF
1055	!
1056	!-- Particle transport/physics with the Lagrangian particle model
1057	!-- (only once during intermediate steps, because it uses an Euler-step)
1058	!-- ### particle model should be moved before prognostic_equations, in order
1059	!-- to regard droplet interactions directly
1060
1061	CALL module_interface_actions( 'after_pressure_solver' )
1062	!
1063	!-- Interaction of droplets with temperature and mixing ratio.
1064	!-- Droplet condensation and evaporation is calculated within
1065	!-- advec_particles.
1066	!
1067	!-- If required, compute liquid water content
1068	IF ( bulk_cloud_model ) THEN
1069	CALL calc_liquid_water_content
1070	ENDIF
1071	!
1072	!-- If required, compute virtual potential temperature
1073	IF ( humidity ) THEN
1074	CALL compute_vpt
1075	ENDIF
1076
1077	!
1078	!-- Compute the diffusion quantities
1079	IF ( .NOT. constant_diffusion ) THEN
1080
1081	!
1082	!-- Determine surface fluxes shf and qsws and surface values
1083	!-- pt_surface and q_surface in dependence on data from external
1084	!-- file LSF_DATA respectively
1085	IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
1086	intermediate_timestep_count == intermediate_timestep_count_max ) &
1087	THEN
1088	CALL ls_forcing_surf( simulated_time )
1089	ENDIF
1090
1091	!
1092	!-- First the vertical (and horizontal) fluxes in the surface
1093	!-- (constant flux) layer are computed
1094	IF ( constant_flux_layer ) THEN
1095	CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'start' )
1096	CALL surface_layer_fluxes
1097	CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'stop' )
1098	ENDIF
1099	!
1100	!-- If required, solve the energy balance for the surface and run soil
1101	!-- model. Call for horizontal as well as vertical surfaces
1102	IF ( land_surface .AND. time_since_reference_point >= skip_time_do_lsm) THEN
1103
1104	CALL cpu_log( log_point(54), 'land_surface', 'start' )
1105	!
1106	!-- Call for horizontal upward-facing surfaces
1107	CALL lsm_energy_balance( .TRUE., -1 )
1108	CALL lsm_soil_model( .TRUE., -1, .TRUE. )
1109	!
1110	!-- Call for northward-facing surfaces
1111	CALL lsm_energy_balance( .FALSE., 0 )
1112	CALL lsm_soil_model( .FALSE., 0, .TRUE. )
1113	!
1114	!-- Call for southward-facing surfaces
1115	CALL lsm_energy_balance( .FALSE., 1 )
1116	CALL lsm_soil_model( .FALSE., 1, .TRUE. )
1117	!
1118	!-- Call for eastward-facing surfaces
1119	CALL lsm_energy_balance( .FALSE., 2 )
1120	CALL lsm_soil_model( .FALSE., 2, .TRUE. )
1121	!
1122	!-- Call for westward-facing surfaces
1123	CALL lsm_energy_balance( .FALSE., 3 )
1124	CALL lsm_soil_model( .FALSE., 3, .TRUE. )
1125
1126	!
1127	!-- At the end, set boundary conditons for potential temperature
1128	!-- and humidity after running the land-surface model. This
1129	!-- might be important for the nesting, where arrays are transfered.
1130	CALL lsm_boundary_condition
1131
1132
1133	CALL cpu_log( log_point(54), 'land_surface', 'stop' )
1134	ENDIF
1135	!
1136	!-- If required, solve the energy balance for urban surfaces and run
1137	!-- the material heat model
1138	IF (urban_surface) THEN
1139	CALL cpu_log( log_point(74), 'urban_surface', 'start' )
1140
1141	CALL usm_surface_energy_balance( .FALSE. )
1142	IF ( usm_material_model ) THEN
1143	CALL usm_green_heat_model
1144	CALL usm_material_heat_model ( .FALSE. )
1145	ENDIF
1146
1147	!
1148	!-- At the end, set boundary conditons for potential temperature
1149	!-- and humidity after running the urban-surface model. This
1150	!-- might be important for the nesting, where arrays are transfered.
1151	CALL usm_boundary_condition
1152
1153	CALL cpu_log( log_point(74), 'urban_surface', 'stop' )
1154	ENDIF
1155	!
1156	!-- Compute the diffusion coefficients
1157	CALL cpu_log( log_point(17), 'diffusivities', 'start' )
1158	IF ( .NOT. humidity ) THEN
1159	IF ( ocean_mode ) THEN
1160	CALL tcm_diffusivities( prho, prho_reference )
1161	ELSE
1162	CALL tcm_diffusivities( pt, pt_reference )
1163	ENDIF
1164	ELSE
1165	CALL tcm_diffusivities( vpt, pt_reference )
1166	ENDIF
1167	CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
1168
1169	ENDIF
1170
1171	ENDDO ! Intermediate step loop
1172
1173	!
1174	!-- Will be used at some point by flow_statistics.
1175	!$ACC UPDATE &
1176	!$ACC HOST(sums_l_l(nzb:nzt+1,0:statistic_regions,0)) &
1177	!$ACC HOST(sums_us2_ws_l(nzb:nzt+1,0)) &
1178	!$ACC HOST(sums_wsus_ws_l(nzb:nzt+1,0)) &
1179	!$ACC HOST(sums_vs2_ws_l(nzb:nzt+1,0)) &
1180	!$ACC HOST(sums_wsvs_ws_l(nzb:nzt+1,0)) &
1181	!$ACC HOST(sums_ws2_ws_l(nzb:nzt+1,0)) &
1182	!$ACC HOST(sums_wspts_ws_l(nzb:nzt+1,0)) &
1183	!$ACC HOST(sums_wssas_ws_l(nzb:nzt+1,0)) &
1184	!$ACC HOST(sums_wsqs_ws_l(nzb:nzt+1,0)) &
1185	!$ACC HOST(sums_wsqcs_ws_l(nzb:nzt+1,0)) &
1186	!$ACC HOST(sums_wsqis_ws_l(nzb:nzt+1,0)) &
1187	!$ACC HOST(sums_wsqrs_ws_l(nzb:nzt+1,0)) &
1188	!$ACC HOST(sums_wsncs_ws_l(nzb:nzt+1,0)) &
1189	!$ACC HOST(sums_wsnis_ws_l(nzb:nzt+1,0)) &
1190	!$ACC HOST(sums_wsnrs_ws_l(nzb:nzt+1,0)) &
1191	!$ACC HOST(sums_wsss_ws_l(nzb:nzt+1,0)) &
1192	!$ACC HOST(sums_salsa_ws_l(nzb:nzt+1,0))
1193
1194	!
1195	!-- If required, calculate radiative fluxes and heating rates
1196	IF ( radiation .AND. time_since_reference_point > skip_time_do_radiation ) THEN
1197
1198	time_radiation = time_radiation + dt_3d
1199
1200	IF ( time_radiation >= dt_radiation .OR. force_radiation_call ) THEN
1201
1202	CALL cpu_log( log_point(50), 'radiation', 'start' )
1203
1204	IF ( .NOT. force_radiation_call ) THEN
1205	time_radiation = time_radiation - dt_radiation
1206	ENDIF
1207
1208	!
1209	!-- Adjust the current time to the time step of the radiation model.
1210	!-- Needed since radiation is pre-calculated and stored only on apparent
1211	!-- solar positions
1212	time_since_reference_point_save = time_since_reference_point
1213	time_since_reference_point = REAL( FLOOR( time_since_reference_point / &
1214	dt_radiation ), wp ) * dt_radiation
1215
1216	CALL radiation_control
1217
1218	IF ( ( urban_surface .OR. land_surface ) .AND. radiation_interactions ) THEN
1219	CALL cpu_log( log_point_s(46), 'radiation_interaction', 'start' )
1220	CALL radiation_interaction
1221	CALL cpu_log( log_point_s(46), 'radiation_interaction', 'stop' )
1222	ENDIF
1223
1224	!
1225	!-- Return the current time to its original value
1226	time_since_reference_point = time_since_reference_point_save
1227
1228	CALL cpu_log( log_point(50), 'radiation', 'stop' )
1229
1230	ENDIF
1231	ENDIF
1232
1233
1234	!
1235	!-- 20200203 (ECC)
1236	!-- allows for emission update mode in legacy mode as well as on-demand mode
1237	!-- note that under on-demand mode emission update is no longer restricted to
1238	!-- an hourly frequency, but whenever the simulation time corresponds to an
1239	!-- inrement in emission timestamp value
1240
1241	!
1242	!-- If required, consider chemical emissions
1243
1244	IF ( air_chemistry .AND. emissions_anthropogenic ) THEN
1245
1246	IF ( emiss_read_legacy_mode ) THEN
1247	!
1248	!-- get hourly index and updates emission data when the hour is passed
1249
1250	CALL get_date_time( time_since_reference_point, hour=hour )
1251
1252	IF ( hour_call_emis /= hour ) THEN
1253
1254	CALL chem_emissions_setup( chem_emis_att, chem_emis, n_matched_vars )
1255	hour_call_emis = hour
1256
1257	ENDIF
1258
1259	ELSE
1260
1261	CALL chem_emissions_update_on_demand
1262
1263	ENDIF
1264
1265	ENDIF
1266
1267
1268	!
1269	!-- If required, consider aerosol emissions for the salsa model
1270	IF ( salsa ) THEN
1271	!
1272	!-- Call emission routine to update emissions if needed
1273	CALL salsa_emission_update
1274
1275	ENDIF
1276	!
1277	!-- If required, calculate indoor temperature, waste heat, heat flux
1278	!-- through wall, etc.
1279	!-- dt_indoor steers the frequency of the indoor model calculations.
1280	!-- Note, at first timestep indoor model is called, in order to provide
1281	!-- a waste heat flux.
1282	IF ( indoor_model ) THEN
1283
1284	time_indoor = time_indoor + dt_3d
1285
1286	IF ( time_indoor >= dt_indoor .OR. current_timestep_number == 0 ) THEN
1287
1288	time_indoor = time_indoor - dt_indoor
1289
1290	CALL cpu_log( log_point(76), 'indoor_model', 'start' )
1291	CALL im_main_heatcool
1292	CALL cpu_log( log_point(76), 'indoor_model', 'stop' )
1293
1294	ENDIF
1295	ENDIF
1296	!
1297	!-- Increase simulation time and output times
1298	nr_timesteps_this_run = nr_timesteps_this_run + 1
1299	current_timestep_number = current_timestep_number + 1
1300	simulated_time = simulated_time + dt_3d
1301	time_since_reference_point = simulated_time - coupling_start_time
1302	simulated_time_chr = time_to_string( time_since_reference_point )
1303
1304
1305	IF ( time_since_reference_point >= skip_time_data_output_av ) THEN
1306	time_do_av = time_do_av + dt_3d
1307	ENDIF
1308	IF ( time_since_reference_point >= skip_time_do2d_xy ) THEN
1309	time_do2d_xy = time_do2d_xy + dt_3d
1310	ENDIF
1311	IF ( time_since_reference_point >= skip_time_do2d_xz ) THEN
1312	time_do2d_xz = time_do2d_xz + dt_3d
1313	ENDIF
1314	IF ( time_since_reference_point >= skip_time_do2d_yz ) THEN
1315	time_do2d_yz = time_do2d_yz + dt_3d
1316	ENDIF
1317	IF ( time_since_reference_point >= skip_time_do3d ) THEN
1318	time_do3d = time_do3d + dt_3d
1319	ENDIF
1320	DO mid = 1, masks
1321	IF ( time_since_reference_point >= skip_time_domask(mid) ) THEN
1322	time_domask(mid)= time_domask(mid) + dt_3d
1323	ENDIF
1324	ENDDO
1325	IF ( time_since_reference_point >= skip_time_dosp ) THEN
1326	time_dosp = time_dosp + dt_3d
1327	ENDIF
1328	time_dots = time_dots + dt_3d
1329	IF ( .NOT. first_call_lpm ) THEN
1330	time_dopts = time_dopts + dt_3d
1331	ENDIF
1332	IF ( time_since_reference_point >= skip_time_dopr ) THEN
1333	time_dopr = time_dopr + dt_3d
1334	ENDIF
1335	time_dopr_listing = time_dopr_listing + dt_3d
1336	time_run_control = time_run_control + dt_3d
1337	!
1338	!-- Increment time-counter for surface output
1339	IF ( surface_output ) THEN
1340	IF ( time_since_reference_point >= skip_time_dosurf ) THEN
1341	time_dosurf = time_dosurf + dt_3d
1342	ENDIF
1343	IF ( time_since_reference_point >= skip_time_dosurf_av ) THEN
1344	time_dosurf_av = time_dosurf_av + dt_3d
1345	ENDIF
1346	ENDIF
1347	!
1348	!-- Increment time-counter for virtual measurements
1349	IF ( virtual_measurement .AND. vm_time_start <= time_since_reference_point ) THEN
1350	time_virtual_measurement = time_virtual_measurement + dt_3d
1351	ENDIF
1352
1353	!
1354	!-- Increment time-counter for wind turbine data output
1355	IF ( wind_turbine ) THEN
1356	time_wtm = time_wtm + dt_3d
1357	ENDIF
1358
1359	!
1360	!-- In case of synthetic turbulence generation and parametrized turbulence
1361	!-- information, update the time counter and if required, adjust the
1362	!-- STG to new atmospheric conditions.
1363	IF ( use_syn_turb_gen ) THEN
1364	IF ( parametrize_inflow_turbulence ) THEN
1365	time_stg_adjust = time_stg_adjust + dt_3d
1366	IF ( time_stg_adjust >= dt_stg_adjust ) THEN
1367	CALL cpu_log( log_point(57), 'synthetic_turbulence_gen', 'start' )
1368	CALL stg_adjust
1369	CALL cpu_log( log_point(57), 'synthetic_turbulence_gen', 'stop' )
1370	ENDIF
1371	ENDIF
1372	time_stg_call = time_stg_call + dt_3d
1373	ENDIF
1374
1375	!
1376	!-- Data exchange between coupled models
1377	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
1378	time_coupling = time_coupling + dt_3d
1379
1380	!
1381	!-- In case of model termination initiated by the local model
1382	!-- (terminate_coupled > 0), the coupler must be skipped because it would
1383	!-- cause an MPI intercomminucation hang.
1384	!-- If necessary, the coupler will be called at the beginning of the
1385	!-- next restart run.
1386	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
1387	CALL surface_coupler
1388	time_coupling = time_coupling - dt_coupling
1389	ENDDO
1390	ENDIF
1391
1392	!
1393	!-- Biometeorology calculation of stationary thermal indices
1394	!-- Todo (kanani): biometeorology needs own time_... treatment.
1395	!-- It might be that time_do2d_xy differs from time_do3d,
1396	!-- and then we might get trouble with the biomet output,
1397	!-- because we can have 2d and/or 3d biomet output!!
1398	IF ( biometeorology &
1399	.AND. ( ( time_do3d >= dt_do3d .AND. time_since_reference_point >= skip_time_do3d ) &
1400	.OR. &
1401	( time_do2d_xy >= dt_do2d_xy .AND. time_since_reference_point >= skip_time_do2d_xy ) &
1402	) ) THEN
1403	!
1404	!-- If required, do thermal comfort calculations
1405	IF ( thermal_comfort ) THEN
1406	CALL bio_calculate_thermal_index_maps ( .FALSE. )
1407	ENDIF
1408	!
1409	!-- If required, do UV exposure calculations
1410	IF ( uv_exposure ) THEN
1411	CALL bio_calculate_uv_exposure
1412	ENDIF
1413	ENDIF
1414
1415	!
1416	!-- Execute alle other module actions routunes
1417	CALL module_interface_actions( 'after_integration' )
1418
1419	!
1420	!-- If Galilei transformation is used, determine the distance that the
1421	!-- model has moved so far
1422	IF ( galilei_transformation ) THEN
1423	advected_distance_x = advected_distance_x + u_gtrans * dt_3d
1424	advected_distance_y = advected_distance_y + v_gtrans * dt_3d
1425	ENDIF
1426
1427	!
1428	!-- Check, if restart is necessary (because cpu-time is expiring or
1429	!-- because it is forced by user) and set stop flag
1430	!-- This call is skipped if the remote model has already initiated a restart.
1431	IF ( .NOT. terminate_run ) CALL check_for_restart
1432
1433	!
1434	!-- Carry out statistical analysis and output at the requested output times.
1435	!-- The MOD function is used for calculating the output time counters (like
1436	!-- time_dopr) in order to regard a possible decrease of the output time
1437	!-- interval in case of restart runs
1438
1439	!
1440	!-- Set a flag indicating that so far no statistics have been created
1441	!-- for this time step
1442	flow_statistics_called = .FALSE.
1443
1444	!
1445	!-- If required, call flow_statistics for averaging in time
1446	IF ( averaging_interval_pr /= 0.0_wp .AND. &
1447	( dt_dopr - time_dopr ) <= averaging_interval_pr .AND. &
1448	time_since_reference_point >= skip_time_dopr ) THEN
1449	time_dopr_av = time_dopr_av + dt_3d
1450	IF ( time_dopr_av >= dt_averaging_input_pr ) THEN
1451	do_sum = .TRUE.
1452	time_dopr_av = MOD( time_dopr_av, MAX( dt_averaging_input_pr, dt_3d ) )
1453	ENDIF
1454	ENDIF
1455	IF ( do_sum ) CALL flow_statistics
1456
1457	!
1458	!-- Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
1459	IF ( averaging_interval /= 0.0_wp .AND. &
1460	( dt_data_output_av - time_do_av ) <= averaging_interval .AND. &
1461	time_since_reference_point >= skip_time_data_output_av ) &
1462	THEN
1463	time_do_sla = time_do_sla + dt_3d
1464	IF ( time_do_sla >= dt_averaging_input ) THEN
1465	IF ( current_timestep_number > timestep_number_at_prev_calc ) &
1466	CALL doq_calculate
1467
1468	CALL sum_up_3d_data
1469	average_count_3d = average_count_3d + 1
1470	time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
1471	ENDIF
1472	ENDIF
1473	!
1474	!-- Average surface data
1475	IF ( surface_output ) THEN
1476	IF ( averaging_interval_surf /= 0.0_wp &
1477	.AND. ( dt_dosurf_av - time_dosurf_av ) <= averaging_interval_surf &
1478	.AND. time_since_reference_point >= skip_time_dosurf_av ) THEN
1479	IF ( time_dosurf_av >= dt_averaging_input ) THEN
1480	CALL surface_data_output_averaging
1481	average_count_surf = average_count_surf + 1
1482	ENDIF
1483	ENDIF
1484	ENDIF
1485
1486	!
1487	!-- Calculate spectra for time averaging
1488	IF ( averaging_interval_sp /= 0.0_wp .AND. ( dt_dosp - time_dosp ) <= averaging_interval_sp&
1489	.AND. time_since_reference_point >= skip_time_dosp ) THEN
1490	time_dosp_av = time_dosp_av + dt_3d
1491	IF ( time_dosp_av >= dt_averaging_input_pr ) THEN
1492	CALL calc_spectra
1493	time_dosp_av = MOD( time_dosp_av, MAX( dt_averaging_input_pr, dt_3d ) )
1494	ENDIF
1495	ENDIF
1496
1497	!
1498	!-- Call flight module and output data
1499	IF ( virtual_flight ) THEN
1500	CALL flight_measurement
1501	CALL data_output_flight
1502	ENDIF
1503	!
1504	!-- Take virtual measurements
1505	IF ( virtual_measurement .AND. time_virtual_measurement >= dt_virtual_measurement &
1506	.AND. vm_time_start <= time_since_reference_point ) THEN
1507	CALL vm_sampling
1508	CALL vm_data_output
1509	time_virtual_measurement = MOD( time_virtual_measurement, &
1510	MAX( dt_virtual_measurement, dt_3d ) )
1511	ENDIF
1512
1513	!
1514	!-- Output wind turbine data
1515	IF ( wind_turbine .AND. time_wtm >= dt_data_output_wtm ) THEN
1516	CALL wtm_data_output
1517	time_wtm = MOD( time_wtm, MAX( dt_data_output_wtm, dt_3d ) )
1518	ENDIF
1519
1520	!
1521	!-- Profile output (ASCII) on file
1522	IF ( time_dopr_listing >= dt_dopr_listing ) THEN
1523	CALL print_1d
1524	time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, dt_3d ) )
1525	ENDIF
1526
1527	!
1528	!-- Graphic output for PROFIL
1529	IF ( time_dopr >= dt_dopr .AND. time_since_reference_point >= skip_time_dopr ) THEN
1530	IF ( dopr_n /= 0 ) CALL data_output_profiles
1531	time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
1532	time_dopr_av = 0.0_wp ! due to averaging (see above)
1533	ENDIF
1534
1535	!
1536	!-- Graphic output for time series
1537	IF ( time_dots >= dt_dots ) THEN
1538	CALL data_output_tseries
1539	time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
1540	ENDIF
1541
1542	!
1543	!-- Output of spectra (formatted for use with PROFIL), in case of no
1544	!-- time averaging, spectra has to be calculated before
1545	IF ( time_dosp >= dt_dosp .AND. time_since_reference_point >= skip_time_dosp ) THEN
1546	IF ( average_count_sp == 0 ) CALL calc_spectra
1547	CALL data_output_spectra
1548	time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
1549	ENDIF
1550
1551	!
1552	!-- 2d-data output (cross-sections)
1553	IF ( time_do2d_xy >= dt_do2d_xy .AND. time_since_reference_point >= skip_time_do2d_xy ) THEN
1554	IF ( current_timestep_number > timestep_number_at_prev_calc ) &
1555	CALL doq_calculate
1556
1557	CALL data_output_2d( 'xy', 0 )
1558	time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
1559	ENDIF
1560	IF ( time_do2d_xz >= dt_do2d_xz .AND. time_since_reference_point >= skip_time_do2d_xz ) THEN
1561	IF ( current_timestep_number > timestep_number_at_prev_calc ) &
1562
1563	CALL doq_calculate
1564	CALL data_output_2d( 'xz', 0 )
1565	time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
1566	ENDIF
1567	IF ( time_do2d_yz >= dt_do2d_yz .AND. time_since_reference_point >= skip_time_do2d_yz ) THEN
1568	IF ( current_timestep_number > timestep_number_at_prev_calc ) &
1569	CALL doq_calculate
1570
1571	CALL data_output_2d( 'yz', 0 )
1572	time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
1573	ENDIF
1574
1575	!
1576	!-- 3d-data output (volume data)
1577	IF ( time_do3d >= dt_do3d .AND. time_since_reference_point >= skip_time_do3d ) THEN
1578	IF ( current_timestep_number > timestep_number_at_prev_calc ) &
1579	CALL doq_calculate
1580
1581	CALL data_output_3d( 0 )
1582	time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
1583	ENDIF
1584
1585	!
1586	!-- Masked data output
1587	DO mid = 1, masks
1588	IF ( time_domask(mid) >= dt_domask(mid) &
1589	.AND. time_since_reference_point >= skip_time_domask(mid) ) THEN
1590	IF ( current_timestep_number > timestep_number_at_prev_calc ) &
1591	CALL doq_calculate
1592
1593	CALL data_output_mask( 0, mid )
1594	time_domask(mid) = MOD( time_domask(mid), MAX( dt_domask(mid), dt_3d ) )
1595	ENDIF
1596	ENDDO
1597
1598	!
1599	!-- Output of time-averaged 2d/3d/masked data
1600	IF ( time_do_av >= dt_data_output_av &
1601	.AND. time_since_reference_point >= skip_time_data_output_av ) THEN
1602	CALL average_3d_data
1603	!
1604	!-- Udate thermal comfort indices based on updated averaged input
1605	IF ( biometeorology .AND. thermal_comfort ) THEN
1606	CALL bio_calculate_thermal_index_maps ( .TRUE. )
1607	ENDIF
1608	CALL data_output_2d( 'xy', 1 )
1609	CALL data_output_2d( 'xz', 1 )
1610	CALL data_output_2d( 'yz', 1 )
1611	CALL data_output_3d( 1 )
1612	DO mid = 1, masks
1613	CALL data_output_mask( 1, mid )
1614	ENDDO
1615	time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
1616	ENDIF
1617	!
1618	!-- Output of surface data, instantaneous and averaged data
1619	IF ( surface_output ) THEN
1620	IF ( time_dosurf >= dt_dosurf .AND. time_since_reference_point >= skip_time_dosurf ) THEN
1621	CALL surface_data_output( 0 )
1622	time_dosurf = MOD( time_dosurf, MAX( dt_dosurf, dt_3d ) )
1623	ENDIF
1624	IF ( time_dosurf_av >= dt_dosurf_av .AND. time_since_reference_point >= skip_time_dosurf_av ) THEN
1625	CALL surface_data_output( 1 )
1626	time_dosurf_av = MOD( time_dosurf_av, MAX( dt_dosurf_av, dt_3d ) )
1627	ENDIF
1628	ENDIF
1629
1630	!
1631	!-- Output of particle time series
1632	IF ( particle_advection ) THEN
1633	IF ( time_dopts >= dt_dopts .OR. &
1634	( time_since_reference_point >= particle_advection_start .AND. &
1635	first_call_lpm ) ) THEN
1636	CALL lpm_data_output_ptseries
1637	time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
1638	ENDIF
1639	ENDIF
1640
1641	!
1642	!-- If required, set the heat flux for the next time step to a random value
1643	IF ( constant_heatflux .AND. random_heatflux ) THEN
1644	IF ( surf_def_h(0)%ns >= 1 ) THEN
1645	CALL cpu_log( log_point(23), 'disturb_heatflux', 'start' )
1646	CALL disturb_heatflux( surf_def_h(0) )
1647	CALL cpu_log( log_point(23), 'disturb_heatflux', 'stop' )
1648	ENDIF
1649	IF ( surf_lsm_h%ns >= 1 ) THEN
1650	CALL cpu_log( log_point(23), 'disturb_heatflux', 'start' )
1651	CALL disturb_heatflux( surf_lsm_h )
1652	CALL cpu_log( log_point(23), 'disturb_heatflux', 'stop' )
1653	ENDIF
1654	IF ( surf_usm_h%ns >= 1 ) THEN
1655	CALL cpu_log( log_point(23), 'disturb_heatflux', 'start' )
1656	CALL disturb_heatflux( surf_usm_h )
1657	CALL cpu_log( log_point(23), 'disturb_heatflux', 'stop' )
1658	ENDIF
1659	ENDIF
1660
1661	!
1662	!-- Execute alle other module actions routunes
1663	CALL module_interface_actions( 'after_timestep' )
1664
1665	!
1666	!-- Determine size of next time step. Save timestep dt_3d because it is
1667	!-- newly calculated in routine timestep, but required further below for
1668	!-- steering the run control output interval
1669	dt_3d_old = dt_3d
1670	CALL timestep
1671
1672	#if defined( __parallel )
1673	!
1674	!-- Synchronize the timestep in case of nested run.
1675	IF ( nested_run ) THEN
1676	!
1677	!-- Synchronize by unifying the time step.
1678	!-- Global minimum of all time-steps is used for all.
1679	CALL pmci_synchronize
1680	ENDIF
1681	#endif
1682
1683	!
1684	!-- Computation and output of run control parameters.
1685	!-- This is also done whenever perturbations have been imposed
1686	IF ( time_run_control >= dt_run_control .OR. &
1687	timestep_scheme(1:5) /= 'runge' .OR. disturbance_created ) &
1688	THEN
1689	CALL run_control
1690	IF ( time_run_control >= dt_run_control ) THEN
1691	time_run_control = MOD( time_run_control, MAX( dt_run_control, dt_3d_old ) )
1692	ENDIF
1693	ENDIF
1694
1695	!
1696	!-- Output elapsed simulated time in form of a progress bar on stdout
1697	IF ( myid == 0 ) CALL output_progress_bar
1698
1699	IF ( debug_output_timestep ) THEN
1700	WRITE( debug_string, * ) 'time_integration', simulated_time
1701	CALL debug_message( debug_string, 'end' )
1702	ENDIF
1703
1704	CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
1705
1706
1707	ENDDO ! time loop
1708
1709	#if defined( _OPENACC )
1710	CALL exit_surface_arrays
1711	#endif
1712	!$ACC END DATA
1713	!$ACC END DATA
1714	!$ACC END DATA
1715	!$ACC END DATA
1716	!$ACC END DATA
1717	!$ACC END DATA
1718	!$ACC END DATA
1719	!$ACC END DATA
1720
1721	IF ( myid == 0 ) CALL finish_progress_bar
1722
1723	CALL location_message( 'atmosphere (and/or ocean) time-stepping', 'finished' )
1724
1725	END SUBROUTINE time_integration

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