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source: palm/trunk/SOURCE/time_integration.f90 @ 4318

Last change on this file since 4318 was 4281, checked in by schwenkel, 5 years ago
Moved boundary_conds to dynamics module
Property svn:keywords set to `Id`
File size: 67.8 KB

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

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