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source: palm/trunk/SOURCE/time_integration.f90 @ 4224

Last change on this file since 4224 was 4182, checked in by scharf, 5 years ago
corrected "Former revisions" section minor formatting in "Former revisions" section added "Author" section
Property svn:keywords set to `Id`
File size: 68.6 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 4182 2019-08-22 15:20:23Z Giersch $
27	! Corrected "Former revisions" section
28	!
29	! 4170 2019-08-19 17:12:31Z gronemeier
30	! copy diss, diss_p, tdiss_m to GPU
31	!
32	! 4144 2019-08-06 09:11:47Z raasch
33	! relational operators .EQ., .NE., etc. replaced by ==, /=, etc.
34	!
35	! 4126 2019-07-30 11:09:11Z gronemeier
36	! renamed routine to calculate uv exposure
37	!
38	! 4111 2019-07-22 18:16:57Z suehring
39	! advc_flags_1 / advc_flags_2 renamed to advc_flags_m / advc_flags_s
40	!
41	! 4069 2019-07-01 14:05:51Z Giersch
42	! Masked output running index mid has been introduced as a local variable to
43	! avoid runtime error (Loop variable has been modified) in time_integration
44	!
45	! 4064 2019-07-01 05:33:33Z gronemeier
46	! Moved call to radiation module out of intermediate time loop
47	!
48	! 4048 2019-06-21 21:00:21Z knoop
49	! Moved production_e_init call into turbulence_closure_mod
50	!
51	! 4047 2019-06-21 18:58:09Z knoop
52	! Added remainings of swap_timelevel upon its dissolution
53	!
54	! 4043 2019-06-18 16:59:00Z schwenkel
55	! Further LPM modularization
56	!
57	! 4039 2019-06-18 10:32:41Z suehring
58	! Rename subroutines in module for diagnostic quantities
59	!
60	! 4029 2019-06-14 14:04:35Z raasch
61	! exchange of ghost points and boundary conditions separated for chemical species and SALSA module,
62	! bugfix: decycling of chemistry species after nesting data transfer
63	!
64	! 4022 2019-06-12 11:52:39Z suehring
65	! Call synthetic turbulence generator at last RK3 substep right after boundary
66	! conditions are updated in offline nesting in order to assure that
67	! perturbations are always imposed
68	!
69	! 4017 2019-06-06 12:16:46Z schwenkel
70	! Mass (volume) flux correction included to ensure global mass conservation for child domains.
71	!
72	! 3994 2019-05-22 18:08:09Z suehring
73	! output of turbulence intensity added
74	!
75	! 3988 2019-05-22 11:32:37Z kanani
76	! Implement steerable output interval for virtual measurements
77	!
78	! 3968 2019-05-13 11:04:01Z suehring
79	! replace nspec_out with n_matched_vars
80	!
81	! 3929 2019-04-24 12:52:08Z banzhafs
82	! Reverse changes back from revision 3878: use chem_boundary_conds instead of
83	! chem_boundary_conds_decycle
84	!
85	!
86	! 3885 2019-04-11 11:29:34Z kanani
87	! Changes related to global restructuring of location messages and introduction
88	! of additional debug messages
89	!
90	! 3879 2019-04-08 20:25:23Z knoop
91	! Moved wtm_forces to module_interface_actions
92	!
93	! 3872 2019-04-08 15:03:06Z knoop
94	! Modifications made for salsa:
95	! - Call salsa_emission_update at each time step but do the checks within
96	! salsa_emission_update (i.e. skip_time_do_salsa >= time_since_reference_point
97	! and next_aero_emission_update <= time_since_reference_point ).
98	! - Renamed nbins --> nbins_aerosol, ncc_tot --> ncomponents_mass and
99	! ngast --> ngases_salsa and loop indices b, c and sg to ib, ic and ig
100	! - Apply nesting for salsa variables
101	! - Removed cpu_log calls speciffic for salsa.
102	!
103	! 3833 2019-03-28 15:04:04Z forkel
104	! added USE chem_gasphase_mod, replaced nspec by nspec since fixed compounds are not integrated
105	!
106	! 3820 2019-03-27 11:53:41Z forkel
107	! renamed do_emiss to emissions_anthropogenic (ecc)
108	!
109	!
110	! 3774 2019-03-04 10:52:49Z moh.hefny
111	! rephrase if statement to avoid unallocated array in case of
112	! nesting_offline is false (crashing during debug mode)
113	!
114	! 3761 2019-02-25 15:31:42Z raasch $
115	! module section re-formatted and openacc required variables moved to separate section,
116	! re-formatting to 100 char line width
117	!
118	! 3745 2019-02-15 18:57:56Z suehring
119	! Call indoor model after first timestep
120	!
121	! 3744 2019-02-15 18:38:58Z suehring
122	! - Moved call of bio_calculate_thermal_index_maps from biometeorology module to
123	! time_integration to make sure averaged input is updated before calculating.
124	!
125	! 3739 2019-02-13 08:05:17Z dom_dwd_user
126	! Removed everything related to "time_bio_results" as this is never used.
127	!
128	! 3724 2019-02-06 16:28:23Z kanani
129	! Correct double-used log_point_s unit
130	!
131	! 3719 2019-02-06 13:10:18Z kanani
132	! - removed wind_turbine cpu measurement, since same time is measured inside
133	! wtm_forces subroutine as special measures
134	! - moved the numerous vnest cpulog to special measures
135	! - extended radiation cpulog over entire radiation part,
136	! moved radiation_interactions cpulog to special measures
137	! - moved some cpu_log calls to this routine for better overview
138	!
139	! 3705 2019-01-29 19:56:39Z suehring
140	! Data output for virtual measurements added
141	!
142	! 3704 2019-01-29 19:51:41Z suehring
143	! Rename subroutines for surface-data output
144	!
145	! 3647 2019-01-02 14:10:44Z kanani
146	! Bugfix: add time_since_reference_point to IF clause for data_output calls
147	! (otherwise skip_time_* values don't come into affect with dt_do* = 0.0).
148	! Clean up indoor_model and biometeorology model call.
149	!
150	! Revision 1.1 1997/08/11 06:19:04 raasch
151	! Initial revision
152	!
153	!
154	! Description:
155	! ------------
156	!> Integration in time of the model equations, statistical analysis and graphic
157	!> output
158	!------------------------------------------------------------------------------!
159	SUBROUTINE time_integration
160
161
162	USE advec_ws, &
163	ONLY: ws_statistics
164
165	USE arrays_3d, &
166	ONLY: diss, diss_p, dzu, e, e_p, nc, nc_p, nr, nr_p, prho, pt, pt_p, pt_init, q_init, q, &
167	qc, qc_p, ql, ql_c, ql_v, ql_vp, qr, qr_p, q_p, ref_state, rho_ocean, s, s_p, sa_p, &
168	tend, u, u_p, v, vpt, v_p, w, w_p
169
170	USE biometeorology_mod, &
171	ONLY: bio_calculate_thermal_index_maps, thermal_comfort, bio_calculate_uv_exposure, &
172	uv_exposure
173
174	USE bulk_cloud_model_mod, &
175	ONLY: bulk_cloud_model, calc_liquid_water_content, collision_turbulence, &
176	microphysics_morrison, microphysics_seifert
177
178	USE calc_mean_profile_mod, &
179	ONLY: calc_mean_profile
180
181	USE chem_emissions_mod, &
182	ONLY: chem_emissions_setup
183
184	USE chem_gasphase_mod, &
185	ONLY: nvar
186
187	USE chem_modules, &
188	ONLY: bc_cs_t_val, chem_species, cs_name, emissions_anthropogenic, n_matched_vars
189
190	USE chemistry_model_mod, &
191	ONLY: chem_boundary_conds
192
193	USE control_parameters, &
194	ONLY: advected_distance_x, advected_distance_y, air_chemistry, average_count_3d, &
195	averaging_interval, averaging_interval_pr, bc_lr_cyc, bc_ns_cyc, bc_pt_t_val, &
196	bc_q_t_val, biometeorology, call_psolver_at_all_substeps, child_domain, &
197	cloud_droplets, constant_flux_layer, constant_heatflux, create_disturbances, &
198	dopr_n, constant_diffusion, coupling_mode, coupling_start_time, &
199	current_timestep_number, disturbance_created, disturbance_energy_limit, dist_range, &
200	do_sum, dt_3d, dt_averaging_input, dt_averaging_input_pr, dt_coupling, &
201	dt_data_output_av, dt_disturb, dt_do2d_xy, dt_do2d_xz, dt_do2d_yz, dt_do3d, &
202	dt_domask,dt_dopts, dt_dopr, dt_dopr_listing, dt_dots, dt_run_control, &
203	end_time, first_call_lpm, first_call_mas, galilei_transformation, humidity, &
204	indoor_model, intermediate_timestep_count, intermediate_timestep_count_max, &
205	land_surface, large_scale_forcing, loop_optimization, lsf_surf, lsf_vert, masks, &
206	multi_agent_system_end, multi_agent_system_start, nesting_offline, neutral, &
207	nr_timesteps_this_run, nudging, ocean_mode, passive_scalar, pt_reference, &
208	pt_slope_offset, random_heatflux, rans_mode, rans_tke_e, run_coupled, salsa, &
209	simulated_time, simulated_time_chr, skip_time_do2d_xy, skip_time_do2d_xz, &
210	skip_time_do2d_yz, skip_time_do3d, skip_time_domask, skip_time_dopr, &
211	skip_time_data_output_av, sloping_surface, stop_dt, surface_output, &
212	terminate_coupled, terminate_run, timestep_scheme, time_coupling, time_do2d_xy, &
213	time_do2d_xz, time_do2d_yz, time_do3d, time_domask, time_dopr, time_dopr_av, &
214	time_dopr_listing, time_dopts, time_dosp, time_dosp_av, time_dots, time_do_av, &
215	time_do_sla, time_disturb, time_run_control, time_since_reference_point, &
216	turbulent_inflow, turbulent_outflow, urban_surface, &
217	use_initial_profile_as_reference, use_single_reference_value, u_gtrans, v_gtrans, &
218	virtual_flight, virtual_measurement, ws_scheme_mom, ws_scheme_sca, timestep_count
219
220	USE cpulog, &
221	ONLY: cpu_log, log_point, log_point_s
222
223	USE date_and_time_mod, &
224	ONLY: calc_date_and_time, hour_call_emis, hour_of_year
225
226	USE diagnostic_output_quantities_mod, &
227	ONLY: doq_calculate, &
228	timestep_number_at_prev_calc
229
230	USE flight_mod, &
231	ONLY: flight_measurement
232
233	USE indices, &
234	ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, nzb, nzt
235
236	USE indoor_model_mod, &
237	ONLY: dt_indoor, im_main_heatcool, time_indoor
238
239	USE interfaces
240
241	USE kinds
242
243	USE land_surface_model_mod, &
244	ONLY: lsm_boundary_condition, lsm_energy_balance, lsm_soil_model, skip_time_do_lsm
245
246	USE lagrangian_particle_model_mod, &
247	ONLY: lpm_data_output_ptseries, lpm_interaction_droplets_ptq
248
249	USE lsf_nudging_mod, &
250	ONLY: calc_tnudge, ls_forcing_surf, ls_forcing_vert, nudge_ref
251
252	USE module_interface, &
253	ONLY: module_interface_actions, module_interface_swap_timelevel
254
255	USE multi_agent_system_mod, &
256	ONLY: agents_active, multi_agent_system
257
258	USE nesting_offl_mod, &
259	ONLY: nesting_offl_bc, nesting_offl_mass_conservation
260
261	USE netcdf_data_input_mod, &
262	ONLY: chem_emis, chem_emis_att, nest_offl, netcdf_data_input_offline_nesting
263
264	USE ocean_mod, &
265	ONLY: prho_reference
266
267	USE particle_attributes, &
268	ONLY: particle_advection, particle_advection_start, use_sgs_for_particles, wang_kernel
269
270	USE pegrid
271
272	USE pmc_interface, &
273	ONLY: nested_run, nesting_mode, pmci_boundary_conds, pmci_datatrans, pmci_synchronize, &
274	pmci_ensure_nest_mass_conservation, pmci_ensure_nest_mass_conservation_vertical, &
275	pmci_set_swaplevel
276
277	USE progress_bar, &
278	ONLY: finish_progress_bar, output_progress_bar
279
280	USE prognostic_equations_mod, &
281	ONLY: prognostic_equations_cache, prognostic_equations_vector
282
283	USE radiation_model_mod, &
284	ONLY: dt_radiation, force_radiation_call, radiation, radiation_control, &
285	radiation_interaction, radiation_interactions, skip_time_do_radiation, time_radiation
286
287	USE salsa_mod, &
288	ONLY: aerosol_number, aerosol_mass, bc_am_t_val, bc_an_t_val, bc_gt_t_val, &
289	nbins_aerosol, ncomponents_mass, ngases_salsa, salsa_boundary_conds, &
290	salsa_emission_update, salsa_gas, salsa_gases_from_chem, skip_time_do_salsa
291
292	USE spectra_mod, &
293	ONLY: average_count_sp, averaging_interval_sp, calc_spectra, dt_dosp, skip_time_dosp
294
295	USE statistics, &
296	ONLY: flow_statistics_called, hom, pr_palm, sums_ls_l
297
298
299	USE surface_layer_fluxes_mod, &
300	ONLY: surface_layer_fluxes
301
302	USE surface_data_output_mod, &
303	ONLY: average_count_surf, averaging_interval_surf, dt_dosurf, dt_dosurf_av, &
304	surface_data_output, surface_data_output_averaging, skip_time_dosurf, &
305	skip_time_dosurf_av, time_dosurf, time_dosurf_av
306
307	USE surface_mod, &
308	ONLY: surf_def_h, surf_lsm_h, surf_usm_h
309
310	USE synthetic_turbulence_generator_mod, &
311	ONLY: dt_stg_call, dt_stg_adjust, parametrize_inflow_turbulence, stg_adjust, stg_main, &
312	time_stg_adjust, time_stg_call, use_syn_turb_gen
313
314	USE turbulence_closure_mod, &
315	ONLY: tcm_diffusivities
316
317	USE urban_surface_mod, &
318	ONLY: usm_boundary_condition, usm_material_heat_model, usm_material_model, &
319	usm_surface_energy_balance, usm_green_heat_model
320
321	USE vertical_nesting_mod, &
322	ONLY: vnested, vnest_anterpolate, vnest_anterpolate_e, vnest_boundary_conds, &
323	vnest_boundary_conds_khkm, vnest_deallocate, vnest_init, vnest_init_fine, &
324	vnest_start_time
325
326	USE virtual_measurement_mod, &
327	ONLY: dt_virtual_measurement, &
328	time_virtual_measurement, &
329	vm_data_output, &
330	vm_sampling, &
331	vm_time_start
332
333
334	#if defined( _OPENACC )
335	USE arrays_3d, &
336	ONLY: d, dd2zu, ddzu, ddzw, drho_air, drho_air_zw, dzw, heatflux_output_conversion, kh, &
337	km, momentumflux_output_conversion, p, ptdf_x, ptdf_y, rdf, rdf_sc, rho_air, &
338	rho_air_zw, tdiss_m, te_m, tpt_m, tu_m, tv_m, tw_m, ug, u_init, u_stokes_zu, vg, &
339	v_init, v_stokes_zu, zu
340
341	USE control_parameters, &
342	ONLY: tsc
343
344	USE indices, &
345	ONLY: advc_flags_m, advc_flags_s, nyn, nyng, nys, nysg, nz, nzb_max, wall_flags_0
346
347	USE statistics, &
348	ONLY: rmask, statistic_regions, sums_l, sums_l_l, sums_us2_ws_l, &
349	sums_wsus_ws_l, sums_vs2_ws_l, sums_wsvs_ws_l, sums_ws2_ws_l, sums_wspts_ws_l, &
350	sums_wsqs_ws_l, sums_wssas_ws_l, sums_wsqcs_ws_l, sums_wsqrs_ws_l, sums_wsncs_ws_l, &
351	sums_wsnrs_ws_l, sums_wsss_ws_l, weight_substep, sums_salsa_ws_l
352
353	USE surface_mod, &
354	ONLY: bc_h, enter_surface_arrays, exit_surface_arrays
355	#endif
356
357
358	IMPLICIT NONE
359
360	CHARACTER (LEN=9) :: time_to_string !<
361
362	INTEGER(iwp) :: ib !< index for aerosol size bins
363	INTEGER(iwp) :: ic !< index for aerosol mass bins
364	INTEGER(iwp) :: icc !< additional index for aerosol mass bins
365	INTEGER(iwp) :: ig !< index for salsa gases
366	INTEGER(iwp) :: lsp
367	INTEGER(iwp) :: lsp_usr !<
368	INTEGER(iwp) :: mid !< masked output running index
369	INTEGER(iwp) :: n !< loop counter for chemistry species
370
371	REAL(wp) :: dt_3d_old !< temporary storage of timestep to be used for
372	!< steering of run control output interval
373	REAL(wp) :: time_since_reference_point_save !< original value of
374	!< time_since_reference_point
375
376
377	!
378	!-- Copy data from arrays_3d
379	!$ACC DATA &
380	!$ACC COPY(d(nzb+1:nzt,nys:nyn,nxl:nxr)) &
381	!$ACC COPY(diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
382	!$ACC COPY(e(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
383	!$ACC COPY(u(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
384	!$ACC COPY(v(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
385	!$ACC COPY(w(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
386	!$ACC COPY(kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
387	!$ACC COPY(km(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
388	!$ACC COPY(p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
389	!$ACC COPY(pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg))
390
391	!$ACC DATA &
392	!$ACC COPY(diss_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
393	!$ACC COPY(e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
394	!$ACC COPY(u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
395	!$ACC COPY(v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
396	!$ACC COPY(w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
397	!$ACC COPY(pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
398	!$ACC COPY(tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
399	!$ACC COPY(tdiss_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
400	!$ACC COPY(te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
401	!$ACC COPY(tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
402	!$ACC COPY(tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
403	!$ACC COPY(tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
404	!$ACC COPY(tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg))
405
406	!$ACC DATA &
407	!$ACC COPYIN(rho_air(nzb:nzt+1), drho_air(nzb:nzt+1)) &
408	!$ACC COPYIN(rho_air_zw(nzb:nzt+1), drho_air_zw(nzb:nzt+1)) &
409	!$ACC COPYIN(zu(nzb:nzt+1)) &
410	!$ACC COPYIN(dzu(1:nzt+1), dzw(1:nzt+1)) &
411	!$ACC COPYIN(ddzu(1:nzt+1), dd2zu(1:nzt)) &
412	!$ACC COPYIN(ddzw(1:nzt+1)) &
413	!$ACC COPYIN(heatflux_output_conversion(nzb:nzt+1)) &
414	!$ACC COPYIN(momentumflux_output_conversion(nzb:nzt+1)) &
415	!$ACC COPYIN(rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt)) &
416	!$ACC COPYIN(ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng)) &
417	!$ACC COPYIN(ref_state(0:nz+1)) &
418	!$ACC COPYIN(u_init(0:nz+1), v_init(0:nz+1)) &
419	!$ACC COPYIN(u_stokes_zu(nzb:nzt+1), v_stokes_zu(nzb:nzt+1)) &
420	!$ACC COPYIN(pt_init(0:nz+1)) &
421	!$ACC COPYIN(ug(0:nz+1), vg(0:nz+1))
422
423	!
424	!-- Copy data from control_parameters
425	!$ACC DATA &
426	!$ACC COPYIN(tsc(1:5))
427
428	!
429	!-- Copy data from indices
430	!$ACC DATA &
431	!$ACC COPYIN(advc_flags_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
432	!$ACC COPYIN(advc_flags_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
433	!$ACC COPYIN(wall_flags_0(nzb:nzt+1,nysg:nyng,nxlg:nxrg))
434
435	!
436	!-- Copy data from surface_mod
437	!$ACC DATA &
438	!$ACC COPYIN(bc_h(0:1)) &
439	!$ACC COPYIN(bc_h(0)%i(1:bc_h(0)%ns)) &
440	!$ACC COPYIN(bc_h(0)%j(1:bc_h(0)%ns)) &
441	!$ACC COPYIN(bc_h(0)%k(1:bc_h(0)%ns)) &
442	!$ACC COPYIN(bc_h(1)%i(1:bc_h(1)%ns)) &
443	!$ACC COPYIN(bc_h(1)%j(1:bc_h(1)%ns)) &
444	!$ACC COPYIN(bc_h(1)%k(1:bc_h(1)%ns))
445
446	!
447	!-- Copy data from statistics
448	!$ACC DATA &
449	!$ACC COPYIN(hom(0:nz+1,1:2,1:4,0)) &
450	!$ACC COPYIN(rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions)) &
451	!$ACC COPYIN(weight_substep(1:intermediate_timestep_count_max)) &
452	!$ACC COPY(sums_l(nzb:nzt+1,1:pr_palm,0)) &
453	!$ACC COPY(sums_l_l(nzb:nzt+1,0:statistic_regions,0)) &
454	!$ACC COPY(sums_us2_ws_l(nzb:nzt+1,0)) &
455	!$ACC COPY(sums_wsus_ws_l(nzb:nzt+1,0)) &
456	!$ACC COPY(sums_vs2_ws_l(nzb:nzt+1,0)) &
457	!$ACC COPY(sums_wsvs_ws_l(nzb:nzt+1,0)) &
458	!$ACC COPY(sums_ws2_ws_l(nzb:nzt+1,0)) &
459	!$ACC COPY(sums_wspts_ws_l(nzb:nzt+1,0)) &
460	!$ACC COPY(sums_wssas_ws_l(nzb:nzt+1,0)) &
461	!$ACC COPY(sums_wsqs_ws_l(nzb:nzt+1,0)) &
462	!$ACC COPY(sums_wsqcs_ws_l(nzb:nzt+1,0)) &
463	!$ACC COPY(sums_wsqrs_ws_l(nzb:nzt+1,0)) &
464	!$ACC COPY(sums_wsncs_ws_l(nzb:nzt+1,0)) &
465	!$ACC COPY(sums_wsnrs_ws_l(nzb:nzt+1,0)) &
466	!$ACC COPY(sums_wsss_ws_l(nzb:nzt+1,0)) &
467	!$ACC COPY(sums_salsa_ws_l(nzb:nzt+1,0))
468
469	#if defined( _OPENACC )
470	CALL enter_surface_arrays
471	#endif
472
473	!
474	!-- At beginning determine the first time step
475	CALL timestep
476	!
477	!-- Synchronize the timestep in case of nested run.
478	IF ( nested_run ) THEN
479	!
480	!-- Synchronization by unifying the time step.
481	!-- Global minimum of all time-steps is used for all.
482	CALL pmci_synchronize
483	ENDIF
484
485	!
486	!-- Determine and print out the run control quantities before the first time
487	!-- step of this run. For the initial run, some statistics (e.g. divergence)
488	!-- need to be determined first --> CALL flow_statistics at the beginning of
489	!-- run_control
490	CALL run_control
491	!
492	!-- Data exchange between coupled models in case that a call has been omitted
493	!-- at the end of the previous run of a job chain.
494	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled .AND. .NOT. vnested ) THEN
495	!
496	!-- In case of model termination initiated by the local model the coupler
497	!-- must not be called because this would again cause an MPI hang.
498	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
499	CALL surface_coupler
500	time_coupling = time_coupling - dt_coupling
501	ENDDO
502	IF (time_coupling == 0.0_wp .AND. time_since_reference_point < dt_coupling ) THEN
503	time_coupling = time_since_reference_point
504	ENDIF
505	ENDIF
506
507	CALL location_message( 'atmosphere (and/or ocean) time-stepping', 'start' )
508
509	!
510	!-- Start of the time loop
511	DO WHILE ( simulated_time < end_time .AND. .NOT. stop_dt .AND. .NOT. terminate_run )
512
513	CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
514	!
515	!-- Vertical nesting: initialize fine grid
516	IF ( vnested ) THEN
517	IF ( .NOT. vnest_init .AND. simulated_time >= vnest_start_time ) THEN
518	CALL cpu_log( log_point_s(22), 'vnest_init', 'start' )
519	CALL vnest_init_fine
520	vnest_init = .TRUE.
521	CALL cpu_log( log_point_s(22), 'vnest_init', 'stop' )
522	ENDIF
523	ENDIF
524	!
525	!-- Determine ug, vg and w_subs in dependence on data from external file
526	!-- LSF_DATA
527	IF ( large_scale_forcing .AND. lsf_vert ) THEN
528	CALL ls_forcing_vert ( simulated_time )
529	sums_ls_l = 0.0_wp
530	ENDIF
531
532	!
533	!-- Set pt_init and q_init to the current profiles taken from
534	!-- NUDGING_DATA
535	IF ( nudging ) THEN
536	CALL nudge_ref ( simulated_time )
537	!
538	!-- Store temperature gradient at the top boundary for possible Neumann
539	!-- boundary condition
540	bc_pt_t_val = ( pt_init(nzt+1) - pt_init(nzt) ) / dzu(nzt+1)
541	bc_q_t_val = ( q_init(nzt+1) - q_init(nzt) ) / dzu(nzt+1)
542	IF ( air_chemistry ) THEN
543	DO lsp = 1, nvar
544	bc_cs_t_val = ( chem_species(lsp)%conc_pr_init(nzt+1) &
545	- chem_species(lsp)%conc_pr_init(nzt) ) &
546	/ dzu(nzt+1)
547	ENDDO
548	ENDIF
549	IF ( salsa .AND. time_since_reference_point >= skip_time_do_salsa ) THEN
550	DO ib = 1, nbins_aerosol
551	bc_an_t_val = ( aerosol_number(ib)%init(nzt+1) - aerosol_number(ib)%init(nzt) ) / &
552	dzu(nzt+1)
553	DO ic = 1, ncomponents_mass
554	icc = ( ic - 1 ) * nbins_aerosol + ib
555	bc_am_t_val = ( aerosol_mass(icc)%init(nzt+1) - aerosol_mass(icc)%init(nzt) ) /&
556	dzu(nzt+1)
557	ENDDO
558	ENDDO
559	IF ( .NOT. salsa_gases_from_chem ) THEN
560	DO ig = 1, ngases_salsa
561	bc_gt_t_val = ( salsa_gas(ig)%init(nzt+1) - salsa_gas(ig)%init(nzt) ) / &
562	dzu(nzt+1)
563	ENDDO
564	ENDIF
565	ENDIF
566	ENDIF
567	!
568	!-- If forcing by larger-scale models is applied, check if new data
569	!-- at domain boundaries need to be read.
570	IF ( nesting_offline ) THEN
571	IF ( nest_offl%time(nest_offl%tind_p) <= time_since_reference_point ) &
572	CALL netcdf_data_input_offline_nesting
573	ENDIF
574
575	!
576	!-- Execute all other module actions routunes
577	CALL module_interface_actions( 'before_timestep' )
578
579	!
580	!-- Start of intermediate step loop
581	intermediate_timestep_count = 0
582	DO WHILE ( intermediate_timestep_count < intermediate_timestep_count_max )
583
584	intermediate_timestep_count = intermediate_timestep_count + 1
585
586	!
587	!-- Set the steering factors for the prognostic equations which depend
588	!-- on the timestep scheme
589	CALL timestep_scheme_steering
590
591	!
592	!-- Calculate those variables needed in the tendency terms which need
593	!-- global communication
594	IF ( .NOT. use_single_reference_value .AND. .NOT. use_initial_profile_as_reference ) &
595	THEN
596	!
597	!-- Horizontally averaged profiles to be used as reference state in
598	!-- buoyancy terms (WARNING: only the respective last call of
599	!-- calc_mean_profile defines the reference state!)
600	IF ( .NOT. neutral ) THEN
601	CALL calc_mean_profile( pt, 4 )
602	ref_state(:) = hom(:,1,4,0) ! this is used in the buoyancy term
603	ENDIF
604	IF ( ocean_mode ) THEN
605	CALL calc_mean_profile( rho_ocean, 64 )
606	ref_state(:) = hom(:,1,64,0)
607	ENDIF
608	IF ( humidity ) THEN
609	CALL calc_mean_profile( vpt, 44 )
610	ref_state(:) = hom(:,1,44,0)
611	ENDIF
612	!
613	!-- Assure that ref_state does not become zero at any level
614	!-- ( might be the case if a vertical level is completely occupied
615	!-- with topography ).
616	ref_state = MERGE( MAXVAL(ref_state), ref_state, ref_state == 0.0_wp )
617	ENDIF
618
619	IF ( ( ws_scheme_mom .OR. ws_scheme_sca ) .AND. intermediate_timestep_count == 1 ) &
620	THEN
621	CALL ws_statistics
622	ENDIF
623	!
624	!-- In case of nudging calculate current nudging time scale and horizontal
625	!-- means of u, v, pt and q
626	IF ( nudging ) THEN
627	CALL calc_tnudge( simulated_time )
628	CALL calc_mean_profile( u, 1 )
629	CALL calc_mean_profile( v, 2 )
630	CALL calc_mean_profile( pt, 4 )
631	CALL calc_mean_profile( q, 41 )
632	ENDIF
633	!
634	!-- Execute all other module actions routunes
635	CALL module_interface_actions( 'before_prognostic_equations' )
636	!
637	!-- Solve the prognostic equations. A fast cache optimized version with
638	!-- only one single loop is used in case of Piascek-Williams advection
639	!-- scheme. NEC vector machines use a different version, because
640	!-- in the other versions a good vectorization is prohibited due to
641	!-- inlining problems.
642	IF ( loop_optimization == 'cache' ) THEN
643	CALL prognostic_equations_cache
644	ELSEIF ( loop_optimization == 'vector' ) THEN
645	CALL prognostic_equations_vector
646	ENDIF
647
648	!
649	!-- Particle transport/physics with the Lagrangian particle model
650	!-- (only once during intermediate steps, because it uses an Euler-step)
651	!-- ### particle model should be moved before prognostic_equations, in order
652	!-- to regard droplet interactions directly
653	IF ( particle_advection .AND. time_since_reference_point >= particle_advection_start &
654	.AND. intermediate_timestep_count == 1 ) &
655	THEN
656	CALL module_interface_actions( 'after_prognostic_equations' )
657	first_call_lpm = .FALSE.
658	ENDIF
659
660	!
661	!-- Interaction of droplets with temperature and mixing ratio.
662	!-- Droplet condensation and evaporation is calculated within
663	!-- advec_particles.
664	IF ( cloud_droplets .AND. intermediate_timestep_count == intermediate_timestep_count_max ) &
665	THEN
666	CALL lpm_interaction_droplets_ptq
667	ENDIF
668
669	!
670	!-- Movement of agents in multi agent system
671	IF ( agents_active .AND. time_since_reference_point >= multi_agent_system_start .AND. &
672	time_since_reference_point <= multi_agent_system_end .AND. &
673	intermediate_timestep_count == 1 ) &
674	THEN
675	CALL multi_agent_system
676	first_call_mas = .FALSE.
677	ENDIF
678
679	!
680	!-- Exchange of ghost points (lateral boundary conditions)
681	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
682
683	CALL exchange_horiz( u_p, nbgp )
684	CALL exchange_horiz( v_p, nbgp )
685	CALL exchange_horiz( w_p, nbgp )
686	CALL exchange_horiz( pt_p, nbgp )
687	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
688	IF ( rans_tke_e .OR. wang_kernel .OR. collision_turbulence &
689	.OR. use_sgs_for_particles ) THEN
690	IF ( rans_tke_e ) THEN
691	CALL exchange_horiz( diss_p, nbgp )
692	ELSE
693	CALL exchange_horiz( diss, nbgp )
694	ENDIF
695	ENDIF
696	IF ( ocean_mode ) THEN
697	CALL exchange_horiz( sa_p, nbgp )
698	CALL exchange_horiz( rho_ocean, nbgp )
699	CALL exchange_horiz( prho, nbgp )
700	ENDIF
701	IF ( humidity ) THEN
702	CALL exchange_horiz( q_p, nbgp )
703	IF ( bulk_cloud_model .AND. microphysics_morrison ) THEN
704	CALL exchange_horiz( qc_p, nbgp )
705	CALL exchange_horiz( nc_p, nbgp )
706	ENDIF
707	IF ( bulk_cloud_model .AND. microphysics_seifert ) THEN
708	CALL exchange_horiz( qr_p, nbgp )
709	CALL exchange_horiz( nr_p, nbgp )
710	ENDIF
711	ENDIF
712	IF ( cloud_droplets ) THEN
713	CALL exchange_horiz( ql, nbgp )
714	CALL exchange_horiz( ql_c, nbgp )
715	CALL exchange_horiz( ql_v, nbgp )
716	CALL exchange_horiz( ql_vp, nbgp )
717	ENDIF
718	IF ( passive_scalar ) CALL exchange_horiz( s_p, nbgp )
719	IF ( air_chemistry ) THEN
720	DO lsp = 1, nvar
721	CALL exchange_horiz( chem_species(lsp)%conc_p, nbgp )
722	ENDDO
723	ENDIF
724
725	IF ( salsa .AND. time_since_reference_point >= skip_time_do_salsa ) THEN
726	DO ib = 1, nbins_aerosol
727	CALL exchange_horiz( aerosol_number(ib)%conc_p, nbgp )
728	DO ic = 1, ncomponents_mass
729	icc = ( ic - 1 ) * nbins_aerosol + ib
730	CALL exchange_horiz( aerosol_mass(icc)%conc_p, nbgp )
731	ENDDO
732	ENDDO
733	IF ( .NOT. salsa_gases_from_chem ) THEN
734	DO ig = 1, ngases_salsa
735	CALL exchange_horiz( salsa_gas(ig)%conc_p, nbgp )
736	ENDDO
737	ENDIF
738	ENDIF
739	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
740
741	!
742	!-- Boundary conditions for the prognostic quantities (except of the
743	!-- velocities at the outflow in case of a non-cyclic lateral wall)
744	CALL boundary_conds
745
746	!
747	!-- Boundary conditions for prognostic quantitites of other modules:
748	!-- Here, only decycling is carried out
749	IF ( air_chemistry ) THEN
750
751	DO lsp = 1, nvar
752	lsp_usr = 1
753	DO WHILE ( TRIM( cs_name( lsp_usr ) ) /= 'novalue' )
754	IF ( TRIM( chem_species(lsp)%name ) == TRIM( cs_name(lsp_usr) ) ) THEN
755	CALL chem_boundary_conds( chem_species(lsp)%conc_p, &
756	chem_species(lsp)%conc_pr_init )
757	ENDIF
758	lsp_usr = lsp_usr + 1
759	ENDDO
760	ENDDO
761
762	ENDIF
763
764	IF ( salsa .AND. time_since_reference_point >= skip_time_do_salsa ) THEN
765
766	DO ib = 1, nbins_aerosol
767	CALL salsa_boundary_conds( aerosol_number(ib)%conc_p, aerosol_number(ib)%init )
768	DO ic = 1, ncomponents_mass
769	icc = ( ic - 1 ) * nbins_aerosol + ib
770	CALL salsa_boundary_conds( aerosol_mass(icc)%conc_p, aerosol_mass(icc)%init )
771	ENDDO
772	ENDDO
773	IF ( .NOT. salsa_gases_from_chem ) THEN
774	DO ig = 1, ngases_salsa
775	CALL salsa_boundary_conds( salsa_gas(ig)%conc_p, salsa_gas(ig)%init )
776	ENDDO
777	ENDIF
778
779	ENDIF
780
781	!
782	!-- Incrementing timestep counter
783	timestep_count = timestep_count + 1
784
785	CALL cpu_log( log_point(28), 'swap_timelevel', 'start' )
786	!
787	!-- Set the swap level for all modules
788	CALL module_interface_swap_timelevel( MOD( timestep_count, 2) )
789	!
790	!-- Set the swap level for steering the pmc data transfer
791	IF ( nested_run ) CALL pmci_set_swaplevel( MOD( timestep_count, 2) + 1 ) !> @todo: why the +1 ?
792
793	CALL cpu_log( log_point(28), 'swap_timelevel', 'stop' )
794
795	!
796	!-- Vertical nesting: Interpolate fine grid data to the coarse grid
797	IF ( vnest_init ) THEN
798	CALL cpu_log( log_point_s(37), 'vnest_anterpolate', 'start' )
799	CALL vnest_anterpolate
800	CALL cpu_log( log_point_s(37), 'vnest_anterpolate', 'stop' )
801	ENDIF
802
803	IF ( nested_run ) THEN
804
805	CALL cpu_log( log_point(60), 'nesting', 'start' )
806	!
807	!-- Domain nesting. The data transfer subroutines pmci_parent_datatrans
808	!-- and pmci_child_datatrans are called inside the wrapper
809	!-- subroutine pmci_datatrans according to the control parameters
810	!-- nesting_mode and nesting_datatransfer_mode.
811	!-- TO_DO: why is nesting_mode given as a parameter here?
812	CALL pmci_datatrans( nesting_mode )
813
814	IF ( TRIM( nesting_mode ) == 'two-way' .OR. nesting_mode == 'vertical' ) THEN
815
816	CALL cpu_log( log_point_s(92), 'exchange-horiz-nest', 'start' )
817	!
818	!-- Exchange_horiz is needed for all parent-domains after the
819	!-- anterpolation
820	CALL exchange_horiz( u, nbgp )
821	CALL exchange_horiz( v, nbgp )
822	CALL exchange_horiz( w, nbgp )
823	IF ( .NOT. neutral ) CALL exchange_horiz( pt, nbgp )
824
825	IF ( humidity ) THEN
826
827	CALL exchange_horiz( q, nbgp )
828
829	IF ( bulk_cloud_model .AND. microphysics_morrison ) THEN
830	CALL exchange_horiz( qc, nbgp )
831	CALL exchange_horiz( nc, nbgp )
832	ENDIF
833	IF ( bulk_cloud_model .AND. microphysics_seifert ) THEN
834	CALL exchange_horiz( qr, nbgp )
835	CALL exchange_horiz( nr, nbgp )
836	ENDIF
837
838	ENDIF
839
840	IF ( passive_scalar ) CALL exchange_horiz( s, nbgp )
841
842	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e, nbgp )
843
844	IF ( .NOT. constant_diffusion .AND. rans_mode .AND. rans_tke_e ) THEN
845	CALL exchange_horiz( diss, nbgp )
846	ENDIF
847
848	IF ( air_chemistry ) THEN
849	DO n = 1, nvar
850	CALL exchange_horiz( chem_species(n)%conc, nbgp )
851	ENDDO
852	ENDIF
853
854	IF ( salsa .AND. time_since_reference_point >= skip_time_do_salsa ) THEN
855	DO ib = 1, nbins_aerosol
856	CALL exchange_horiz( aerosol_number(ib)%conc, nbgp )
857	DO ic = 1, ncomponents_mass
858	icc = ( ic - 1 ) * nbins_aerosol + ib
859	CALL exchange_horiz( aerosol_mass(icc)%conc, nbgp )
860	ENDDO
861	ENDDO
862	IF ( .NOT. salsa_gases_from_chem ) THEN
863	DO ig = 1, ngases_salsa
864	CALL exchange_horiz( salsa_gas(ig)%conc, nbgp )
865	ENDDO
866	ENDIF
867	ENDIF
868	CALL cpu_log( log_point_s(92), 'exchange-horiz-nest', 'stop' )
869
870	ENDIF
871
872	!
873	!-- Set boundary conditions again after interpolation and anterpolation.
874	CALL pmci_boundary_conds
875
876	!
877	!-- Set chemistry boundary conditions (decycling)
878	IF ( air_chemistry ) THEN
879	DO lsp = 1, nvar
880	lsp_usr = 1
881	DO WHILE ( TRIM( cs_name( lsp_usr ) ) /= 'novalue' )
882	IF ( TRIM( chem_species(lsp)%name ) == TRIM( cs_name(lsp_usr) ) ) THEN
883	CALL chem_boundary_conds( chem_species(lsp)%conc, &
884	chem_species(lsp)%conc_pr_init )
885	ENDIF
886	lsp_usr = lsp_usr + 1
887	ENDDO
888	ENDDO
889	ENDIF
890
891	!
892	!-- Set SALSA boundary conditions (decycling)
893	IF ( salsa .AND. time_since_reference_point >= skip_time_do_salsa ) THEN
894	DO ib = 1, nbins_aerosol
895	CALL salsa_boundary_conds( aerosol_number(ib)%conc, aerosol_number(ib)%init )
896	DO ic = 1, ncomponents_mass
897	icc = ( ic - 1 ) * nbins_aerosol + ib
898	CALL salsa_boundary_conds( aerosol_mass(icc)%conc, aerosol_mass(icc)%init )
899	ENDDO
900	ENDDO
901	IF ( .NOT. salsa_gases_from_chem ) THEN
902	DO ig = 1, ngases_salsa
903	CALL salsa_boundary_conds( salsa_gas(ig)%conc, salsa_gas(ig)%init )
904	ENDDO
905	ENDIF
906	ENDIF
907
908	CALL cpu_log( log_point(60), 'nesting', 'stop' )
909
910	ENDIF
911
912	!
913	!-- Temperature offset must be imposed at cyclic boundaries in x-direction
914	!-- when a sloping surface is used
915	IF ( sloping_surface ) THEN
916	IF ( nxl == 0 ) pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - pt_slope_offset
917	IF ( nxr == nx ) pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + pt_slope_offset
918	ENDIF
919
920	!
921	!-- Impose a turbulent inflow using the recycling method
922	IF ( turbulent_inflow ) CALL inflow_turbulence
923
924	!
925	!-- Set values at outflow boundary using the special outflow condition
926	IF ( turbulent_outflow ) CALL outflow_turbulence
927
928	!
929	!-- Impose a random perturbation on the horizontal velocity field
930	IF ( create_disturbances .AND. ( call_psolver_at_all_substeps .AND. &
931	intermediate_timestep_count == intermediate_timestep_count_max ) &
932	.OR. ( .NOT. call_psolver_at_all_substeps .AND. intermediate_timestep_count == 1 ) ) &
933	THEN
934	time_disturb = time_disturb + dt_3d
935	IF ( time_disturb >= dt_disturb ) THEN
936	IF ( disturbance_energy_limit /= 0.0_wp .AND. &
937	hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit ) THEN
938	CALL disturb_field( 'u', tend, u )
939	CALL disturb_field( 'v', tend, v )
940	ELSEIF ( ( .NOT. bc_lr_cyc .OR. .NOT. bc_ns_cyc ) &
941	.AND. .NOT. child_domain .AND. .NOT. nesting_offline ) &
942	THEN
943	!
944	!-- Runs with a non-cyclic lateral wall need perturbations
945	!-- near the inflow throughout the whole simulation
946	dist_range = 1
947	CALL disturb_field( 'u', tend, u )
948	CALL disturb_field( 'v', tend, v )
949	dist_range = 0
950	ENDIF
951	time_disturb = time_disturb - dt_disturb
952	ENDIF
953	ENDIF
954
955	!
956	!-- Map forcing data derived from larger scale model onto domain
957	!-- boundaries.
958	IF ( nesting_offline .AND. intermediate_timestep_count == &
959	intermediate_timestep_count_max ) &
960	CALL nesting_offl_bc
961	!
962	!-- Impose a turbulent inflow using synthetic generated turbulence.
963	IF ( use_syn_turb_gen .AND. &
964	intermediate_timestep_count == intermediate_timestep_count_max ) THEN
965	CALL cpu_log( log_point(57), 'synthetic_turbulence_gen', 'start' )
966	CALL stg_main
967	CALL cpu_log( log_point(57), 'synthetic_turbulence_gen', 'stop' )
968	ENDIF
969	!
970	!-- Ensure mass conservation. This need to be done after imposing
971	!-- synthetic turbulence and top boundary condition for pressure is set to
972	!-- Neumann conditions.
973	!-- Is this also required in case of Dirichlet?
974	IF ( nesting_offline ) CALL nesting_offl_mass_conservation
975	!
976	!-- Reduce the velocity divergence via the equation for perturbation
977	!-- pressure.
978	IF ( intermediate_timestep_count == 1 .OR. &
979	call_psolver_at_all_substeps ) THEN
980
981	IF ( vnest_init ) THEN
982	!
983	!-- Compute pressure in the CG, interpolate top boundary conditions
984	!-- to the FG and then compute pressure in the FG
985	IF ( coupling_mode == 'vnested_crse' ) CALL pres
986
987	CALL cpu_log( log_point_s(30), 'vnest_bc', 'start' )
988	CALL vnest_boundary_conds
989	CALL cpu_log( log_point_s(30), 'vnest_bc', 'stop' )
990
991	IF ( coupling_mode == 'vnested_fine' ) CALL pres
992
993	!-- Anterpolate TKE, satisfy Germano Identity
994	CALL cpu_log( log_point_s(28), 'vnest_anter_e', 'start' )
995	CALL vnest_anterpolate_e
996	CALL cpu_log( log_point_s(28), 'vnest_anter_e', 'stop' )
997
998	ELSE
999	!
1000	!-- Mass (volume) flux correction to ensure global mass conservation for child domains.
1001	IF ( child_domain ) THEN
1002	IF ( nesting_mode == 'vertical' ) THEN
1003	CALL pmci_ensure_nest_mass_conservation_vertical
1004	ELSE
1005	CALL pmci_ensure_nest_mass_conservation
1006	ENDIF
1007	ENDIF
1008
1009	CALL pres
1010
1011	ENDIF
1012
1013	ENDIF
1014
1015	!
1016	!-- If required, compute liquid water content
1017	IF ( bulk_cloud_model ) THEN
1018	CALL calc_liquid_water_content
1019	ENDIF
1020	!
1021	!-- If required, compute virtual potential temperature
1022	IF ( humidity ) THEN
1023	CALL compute_vpt
1024	ENDIF
1025
1026	!
1027	!-- Compute the diffusion quantities
1028	IF ( .NOT. constant_diffusion ) THEN
1029
1030	!
1031	!-- Determine surface fluxes shf and qsws and surface values
1032	!-- pt_surface and q_surface in dependence on data from external
1033	!-- file LSF_DATA respectively
1034	IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
1035	intermediate_timestep_count == intermediate_timestep_count_max ) &
1036	THEN
1037	CALL ls_forcing_surf( simulated_time )
1038	ENDIF
1039
1040	!
1041	!-- First the vertical (and horizontal) fluxes in the surface
1042	!-- (constant flux) layer are computed
1043	IF ( constant_flux_layer ) THEN
1044	CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'start' )
1045	CALL surface_layer_fluxes
1046	CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'stop' )
1047	ENDIF
1048	!
1049	!-- If required, solve the energy balance for the surface and run soil
1050	!-- model. Call for horizontal as well as vertical surfaces
1051	IF ( land_surface .AND. time_since_reference_point >= skip_time_do_lsm) THEN
1052
1053	CALL cpu_log( log_point(54), 'land_surface', 'start' )
1054	!
1055	!-- Call for horizontal upward-facing surfaces
1056	CALL lsm_energy_balance( .TRUE., -1 )
1057	CALL lsm_soil_model( .TRUE., -1, .TRUE. )
1058	!
1059	!-- Call for northward-facing surfaces
1060	CALL lsm_energy_balance( .FALSE., 0 )
1061	CALL lsm_soil_model( .FALSE., 0, .TRUE. )
1062	!
1063	!-- Call for southward-facing surfaces
1064	CALL lsm_energy_balance( .FALSE., 1 )
1065	CALL lsm_soil_model( .FALSE., 1, .TRUE. )
1066	!
1067	!-- Call for eastward-facing surfaces
1068	CALL lsm_energy_balance( .FALSE., 2 )
1069	CALL lsm_soil_model( .FALSE., 2, .TRUE. )
1070	!
1071	!-- Call for westward-facing surfaces
1072	CALL lsm_energy_balance( .FALSE., 3 )
1073	CALL lsm_soil_model( .FALSE., 3, .TRUE. )
1074
1075	!
1076	!-- At the end, set boundary conditons for potential temperature
1077	!-- and humidity after running the land-surface model. This
1078	!-- might be important for the nesting, where arrays are transfered.
1079	CALL lsm_boundary_condition
1080
1081
1082	CALL cpu_log( log_point(54), 'land_surface', 'stop' )
1083	ENDIF
1084	!
1085	!-- If required, solve the energy balance for urban surfaces and run
1086	!-- the material heat model
1087	IF (urban_surface) THEN
1088	CALL cpu_log( log_point(74), 'urban_surface', 'start' )
1089
1090	CALL usm_surface_energy_balance( .FALSE. )
1091	IF ( usm_material_model ) THEN
1092	CALL usm_green_heat_model
1093	CALL usm_material_heat_model ( .FALSE. )
1094	ENDIF
1095
1096	!
1097	!-- At the end, set boundary conditons for potential temperature
1098	!-- and humidity after running the urban-surface model. This
1099	!-- might be important for the nesting, where arrays are transfered.
1100	CALL usm_boundary_condition
1101
1102	CALL cpu_log( log_point(74), 'urban_surface', 'stop' )
1103	ENDIF
1104	!
1105	!-- Compute the diffusion coefficients
1106	CALL cpu_log( log_point(17), 'diffusivities', 'start' )
1107	IF ( .NOT. humidity ) THEN
1108	IF ( ocean_mode ) THEN
1109	CALL tcm_diffusivities( prho, prho_reference )
1110	ELSE
1111	CALL tcm_diffusivities( pt, pt_reference )
1112	ENDIF
1113	ELSE
1114	CALL tcm_diffusivities( vpt, pt_reference )
1115	ENDIF
1116	CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
1117	!
1118	!-- Vertical nesting: set fine grid eddy viscosity top boundary condition
1119	IF ( vnest_init ) CALL vnest_boundary_conds_khkm
1120
1121	ENDIF
1122
1123	ENDDO ! Intermediate step loop
1124
1125	!
1126	!-- Will be used at some point by flow_statistics.
1127	!$ACC UPDATE &
1128	!$ACC HOST(sums_l_l(nzb:nzt+1,0:statistic_regions,0)) &
1129	!$ACC HOST(sums_us2_ws_l(nzb:nzt+1,0)) &
1130	!$ACC HOST(sums_wsus_ws_l(nzb:nzt+1,0)) &
1131	!$ACC HOST(sums_vs2_ws_l(nzb:nzt+1,0)) &
1132	!$ACC HOST(sums_wsvs_ws_l(nzb:nzt+1,0)) &
1133	!$ACC HOST(sums_ws2_ws_l(nzb:nzt+1,0)) &
1134	!$ACC HOST(sums_wspts_ws_l(nzb:nzt+1,0)) &
1135	!$ACC HOST(sums_wssas_ws_l(nzb:nzt+1,0)) &
1136	!$ACC HOST(sums_wsqs_ws_l(nzb:nzt+1,0)) &
1137	!$ACC HOST(sums_wsqcs_ws_l(nzb:nzt+1,0)) &
1138	!$ACC HOST(sums_wsqrs_ws_l(nzb:nzt+1,0)) &
1139	!$ACC HOST(sums_wsncs_ws_l(nzb:nzt+1,0)) &
1140	!$ACC HOST(sums_wsnrs_ws_l(nzb:nzt+1,0)) &
1141	!$ACC HOST(sums_wsss_ws_l(nzb:nzt+1,0)) &
1142	!$ACC HOST(sums_salsa_ws_l(nzb:nzt+1,0))
1143
1144	!
1145	!-- If required, calculate radiative fluxes and heating rates
1146	IF ( radiation .AND. time_since_reference_point > skip_time_do_radiation ) THEN
1147
1148	time_radiation = time_radiation + dt_3d
1149
1150	IF ( time_radiation >= dt_radiation .OR. force_radiation_call ) THEN
1151
1152	CALL cpu_log( log_point(50), 'radiation', 'start' )
1153
1154	IF ( .NOT. force_radiation_call ) THEN
1155	time_radiation = time_radiation - dt_radiation
1156	ENDIF
1157
1158	!
1159	!-- Adjust the current time to the time step of the radiation model.
1160	!-- Needed since radiation is pre-calculated and stored only on apparent
1161	!-- solar positions
1162	time_since_reference_point_save = time_since_reference_point
1163	time_since_reference_point = REAL( FLOOR( time_since_reference_point / &
1164	dt_radiation ), wp ) * dt_radiation
1165
1166	CALL radiation_control
1167
1168	IF ( ( urban_surface .OR. land_surface ) .AND. radiation_interactions ) THEN
1169	CALL cpu_log( log_point_s(46), 'radiation_interaction', 'start' )
1170	CALL radiation_interaction
1171	CALL cpu_log( log_point_s(46), 'radiation_interaction', 'stop' )
1172	ENDIF
1173
1174	!
1175	!-- Return the current time to its original value
1176	time_since_reference_point = time_since_reference_point_save
1177
1178	CALL cpu_log( log_point(50), 'radiation', 'stop' )
1179
1180	ENDIF
1181	ENDIF
1182
1183	!
1184	!-- If required, consider chemical emissions
1185	IF ( air_chemistry .AND. emissions_anthropogenic ) THEN
1186	!
1187	!-- Update the time --> kanani: revise location of this CALL
1188	CALL calc_date_and_time
1189	!
1190	!-- Call emission routine only once an hour
1191	IF ( hour_of_year > hour_call_emis ) THEN
1192	CALL chem_emissions_setup( chem_emis_att, chem_emis, n_matched_vars )
1193	hour_call_emis = hour_of_year
1194	ENDIF
1195	ENDIF
1196	!
1197	!-- If required, consider aerosol emissions for the salsa model
1198	IF ( salsa ) THEN
1199	!
1200	!-- Call emission routine to update emissions if needed
1201	CALL salsa_emission_update
1202
1203	ENDIF
1204	!
1205	!-- If required, calculate indoor temperature, waste heat, heat flux
1206	!-- through wall, etc.
1207	!-- dt_indoor steers the frequency of the indoor model calculations.
1208	!-- Note, at first timestep indoor model is called, in order to provide
1209	!-- a waste heat flux.
1210	IF ( indoor_model ) THEN
1211
1212	time_indoor = time_indoor + dt_3d
1213
1214	IF ( time_indoor >= dt_indoor .OR. current_timestep_number == 0 ) THEN
1215
1216	time_indoor = time_indoor - dt_indoor
1217
1218	CALL cpu_log( log_point(76), 'indoor_model', 'start' )
1219	CALL im_main_heatcool
1220	CALL cpu_log( log_point(76), 'indoor_model', 'stop' )
1221
1222	ENDIF
1223	ENDIF
1224	!
1225	!-- Increase simulation time and output times
1226	nr_timesteps_this_run = nr_timesteps_this_run + 1
1227	current_timestep_number = current_timestep_number + 1
1228	simulated_time = simulated_time + dt_3d
1229	time_since_reference_point = simulated_time - coupling_start_time
1230	simulated_time_chr = time_to_string( time_since_reference_point )
1231
1232
1233
1234
1235	IF ( time_since_reference_point >= skip_time_data_output_av ) THEN
1236	time_do_av = time_do_av + dt_3d
1237	ENDIF
1238	IF ( time_since_reference_point >= skip_time_do2d_xy ) THEN
1239	time_do2d_xy = time_do2d_xy + dt_3d
1240	ENDIF
1241	IF ( time_since_reference_point >= skip_time_do2d_xz ) THEN
1242	time_do2d_xz = time_do2d_xz + dt_3d
1243	ENDIF
1244	IF ( time_since_reference_point >= skip_time_do2d_yz ) THEN
1245	time_do2d_yz = time_do2d_yz + dt_3d
1246	ENDIF
1247	IF ( time_since_reference_point >= skip_time_do3d ) THEN
1248	time_do3d = time_do3d + dt_3d
1249	ENDIF
1250	DO mid = 1, masks
1251	IF ( time_since_reference_point >= skip_time_domask(mid) ) THEN
1252	time_domask(mid)= time_domask(mid) + dt_3d
1253	ENDIF
1254	ENDDO
1255	IF ( time_since_reference_point >= skip_time_dosp ) THEN
1256	time_dosp = time_dosp + dt_3d
1257	ENDIF
1258	time_dots = time_dots + dt_3d
1259	IF ( .NOT. first_call_lpm ) THEN
1260	time_dopts = time_dopts + dt_3d
1261	ENDIF
1262	IF ( time_since_reference_point >= skip_time_dopr ) THEN
1263	time_dopr = time_dopr + dt_3d
1264	ENDIF
1265	time_dopr_listing = time_dopr_listing + dt_3d
1266	time_run_control = time_run_control + dt_3d
1267	!
1268	!-- Increment time-counter for surface output
1269	IF ( surface_output ) THEN
1270	IF ( time_since_reference_point >= skip_time_dosurf ) THEN
1271	time_dosurf = time_dosurf + dt_3d
1272	ENDIF
1273	IF ( time_since_reference_point >= skip_time_dosurf_av ) THEN
1274	time_dosurf_av = time_dosurf_av + dt_3d
1275	ENDIF
1276	ENDIF
1277	!
1278	!-- Increment time-counter for virtual measurements
1279	IF ( virtual_measurement .AND. vm_time_start <= time_since_reference_point ) THEN
1280	time_virtual_measurement = time_virtual_measurement + dt_3d
1281	ENDIF
1282	!
1283	!-- In case of synthetic turbulence generation and parametrized turbulence
1284	!-- information, update the time counter and if required, adjust the
1285	!-- STG to new atmospheric conditions.
1286	IF ( use_syn_turb_gen ) THEN
1287	IF ( parametrize_inflow_turbulence ) THEN
1288	time_stg_adjust = time_stg_adjust + dt_3d
1289	IF ( time_stg_adjust >= dt_stg_adjust ) THEN
1290	CALL cpu_log( log_point(57), 'synthetic_turbulence_gen', 'start' )
1291	CALL stg_adjust
1292	CALL cpu_log( log_point(57), 'synthetic_turbulence_gen', 'stop' )
1293	ENDIF
1294	ENDIF
1295	time_stg_call = time_stg_call + dt_3d
1296	ENDIF
1297
1298	!
1299	!-- Data exchange between coupled models
1300	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled .AND. .NOT. vnested ) THEN
1301	time_coupling = time_coupling + dt_3d
1302
1303	!
1304	!-- In case of model termination initiated by the local model
1305	!-- (terminate_coupled > 0), the coupler must be skipped because it would
1306	!-- cause an MPI intercomminucation hang.
1307	!-- If necessary, the coupler will be called at the beginning of the
1308	!-- next restart run.
1309	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
1310	CALL surface_coupler
1311	time_coupling = time_coupling - dt_coupling
1312	ENDDO
1313	ENDIF
1314
1315	!
1316	!-- Biometeorology calculation of stationary thermal indices
1317	!-- Todo (kanani): biometeorology needs own time_... treatment.
1318	!-- It might be that time_do2d_xy differs from time_do3d,
1319	!-- and then we might get trouble with the biomet output,
1320	!-- because we can have 2d and/or 3d biomet output!!
1321	IF ( biometeorology &
1322	.AND. ( ( time_do3d >= dt_do3d .AND. time_since_reference_point >= skip_time_do3d ) &
1323	.OR. &
1324	( time_do2d_xy >= dt_do2d_xy .AND. time_since_reference_point >= skip_time_do2d_xy ) &
1325	) ) THEN
1326	!
1327	!-- If required, do thermal comfort calculations
1328	IF ( thermal_comfort ) THEN
1329	CALL bio_calculate_thermal_index_maps ( .FALSE. )
1330	ENDIF
1331	!
1332	!-- If required, do UV exposure calculations
1333	IF ( uv_exposure ) THEN
1334	CALL bio_calculate_uv_exposure
1335	ENDIF
1336	ENDIF
1337
1338	!
1339	!-- Execute alle other module actions routunes
1340	CALL module_interface_actions( 'after_integration' )
1341
1342	!
1343	!-- If Galilei transformation is used, determine the distance that the
1344	!-- model has moved so far
1345	IF ( galilei_transformation ) THEN
1346	advected_distance_x = advected_distance_x + u_gtrans * dt_3d
1347	advected_distance_y = advected_distance_y + v_gtrans * dt_3d
1348	ENDIF
1349
1350	!
1351	!-- Check, if restart is necessary (because cpu-time is expiring or
1352	!-- because it is forced by user) and set stop flag
1353	!-- This call is skipped if the remote model has already initiated a restart.
1354	IF ( .NOT. terminate_run ) CALL check_for_restart
1355
1356	!
1357	!-- Carry out statistical analysis and output at the requested output times.
1358	!-- The MOD function is used for calculating the output time counters (like
1359	!-- time_dopr) in order to regard a possible decrease of the output time
1360	!-- interval in case of restart runs
1361
1362	!
1363	!-- Set a flag indicating that so far no statistics have been created
1364	!-- for this time step
1365	flow_statistics_called = .FALSE.
1366
1367	!
1368	!-- If required, call flow_statistics for averaging in time
1369	IF ( averaging_interval_pr /= 0.0_wp .AND. &
1370	( dt_dopr - time_dopr ) <= averaging_interval_pr .AND. &
1371	time_since_reference_point >= skip_time_dopr ) THEN
1372	time_dopr_av = time_dopr_av + dt_3d
1373	IF ( time_dopr_av >= dt_averaging_input_pr ) THEN
1374	do_sum = .TRUE.
1375	time_dopr_av = MOD( time_dopr_av, MAX( dt_averaging_input_pr, dt_3d ) )
1376	ENDIF
1377	ENDIF
1378	IF ( do_sum ) CALL flow_statistics
1379
1380	!
1381	!-- Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
1382	IF ( averaging_interval /= 0.0_wp .AND. &
1383	( dt_data_output_av - time_do_av ) <= averaging_interval .AND. &
1384	time_since_reference_point >= skip_time_data_output_av ) &
1385	THEN
1386	time_do_sla = time_do_sla + dt_3d
1387	IF ( time_do_sla >= dt_averaging_input ) THEN
1388	IF ( current_timestep_number > timestep_number_at_prev_calc ) &
1389	CALL doq_calculate
1390
1391	CALL sum_up_3d_data
1392	average_count_3d = average_count_3d + 1
1393	time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
1394	ENDIF
1395	ENDIF
1396	!
1397	!-- Average surface data
1398	IF ( surface_output ) THEN
1399	IF ( averaging_interval_surf /= 0.0_wp &
1400	.AND. ( dt_dosurf_av - time_dosurf_av ) <= averaging_interval_surf &
1401	.AND. time_since_reference_point >= skip_time_dosurf_av ) THEN
1402	IF ( time_dosurf_av >= dt_averaging_input ) THEN
1403	CALL surface_data_output_averaging
1404	average_count_surf = average_count_surf + 1
1405	ENDIF
1406	ENDIF
1407	ENDIF
1408
1409	!
1410	!-- Calculate spectra for time averaging
1411	IF ( averaging_interval_sp /= 0.0_wp .AND. ( dt_dosp - time_dosp ) <= averaging_interval_sp&
1412	.AND. time_since_reference_point >= skip_time_dosp ) THEN
1413	time_dosp_av = time_dosp_av + dt_3d
1414	IF ( time_dosp_av >= dt_averaging_input_pr ) THEN
1415	CALL calc_spectra
1416	time_dosp_av = MOD( time_dosp_av, MAX( dt_averaging_input_pr, dt_3d ) )
1417	ENDIF
1418	ENDIF
1419
1420	!
1421	!-- Call flight module and output data
1422	IF ( virtual_flight ) THEN
1423	CALL flight_measurement
1424	CALL data_output_flight
1425	ENDIF
1426	!
1427	!-- Take virtual measurements
1428	IF ( virtual_measurement .AND. time_virtual_measurement >= dt_virtual_measurement &
1429	.AND. vm_time_start <= time_since_reference_point ) THEN
1430	CALL vm_sampling
1431	CALL vm_data_output
1432	time_virtual_measurement = MOD( time_virtual_measurement, &
1433	MAX( dt_virtual_measurement, dt_3d ) )
1434	ENDIF
1435	!
1436	!-- Profile output (ASCII) on file
1437	IF ( time_dopr_listing >= dt_dopr_listing ) THEN
1438	CALL print_1d
1439	time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, dt_3d ) )
1440	ENDIF
1441
1442	!
1443	!-- Graphic output for PROFIL
1444	IF ( time_dopr >= dt_dopr .AND. time_since_reference_point >= skip_time_dopr ) THEN
1445	IF ( dopr_n /= 0 ) CALL data_output_profiles
1446	time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
1447	time_dopr_av = 0.0_wp ! due to averaging (see above)
1448	ENDIF
1449
1450	!
1451	!-- Graphic output for time series
1452	IF ( time_dots >= dt_dots ) THEN
1453	CALL data_output_tseries
1454	time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
1455	ENDIF
1456
1457	!
1458	!-- Output of spectra (formatted for use with PROFIL), in case of no
1459	!-- time averaging, spectra has to be calculated before
1460	IF ( time_dosp >= dt_dosp .AND. time_since_reference_point >= skip_time_dosp ) THEN
1461	IF ( average_count_sp == 0 ) CALL calc_spectra
1462	CALL data_output_spectra
1463	time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
1464	ENDIF
1465
1466	!
1467	!-- 2d-data output (cross-sections)
1468	IF ( time_do2d_xy >= dt_do2d_xy .AND. time_since_reference_point >= skip_time_do2d_xy ) THEN
1469	IF ( current_timestep_number > timestep_number_at_prev_calc ) &
1470	CALL doq_calculate
1471
1472	CALL data_output_2d( 'xy', 0 )
1473	time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
1474	ENDIF
1475	IF ( time_do2d_xz >= dt_do2d_xz .AND. time_since_reference_point >= skip_time_do2d_xz ) THEN
1476	IF ( current_timestep_number > timestep_number_at_prev_calc ) &
1477
1478	CALL doq_calculate
1479	CALL data_output_2d( 'xz', 0 )
1480	time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
1481	ENDIF
1482	IF ( time_do2d_yz >= dt_do2d_yz .AND. time_since_reference_point >= skip_time_do2d_yz ) THEN
1483	IF ( current_timestep_number > timestep_number_at_prev_calc ) &
1484	CALL doq_calculate
1485
1486	CALL data_output_2d( 'yz', 0 )
1487	time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
1488	ENDIF
1489
1490	!
1491	!-- 3d-data output (volume data)
1492	IF ( time_do3d >= dt_do3d .AND. time_since_reference_point >= skip_time_do3d ) THEN
1493	IF ( current_timestep_number > timestep_number_at_prev_calc ) &
1494	CALL doq_calculate
1495
1496	CALL data_output_3d( 0 )
1497	time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
1498	ENDIF
1499
1500	!
1501	!-- Masked data output
1502	DO mid = 1, masks
1503	IF ( time_domask(mid) >= dt_domask(mid) &
1504	.AND. time_since_reference_point >= skip_time_domask(mid) ) THEN
1505	IF ( current_timestep_number > timestep_number_at_prev_calc ) &
1506	CALL doq_calculate
1507
1508	CALL data_output_mask( 0, mid )
1509	time_domask(mid) = MOD( time_domask(mid), MAX( dt_domask(mid), dt_3d ) )
1510	ENDIF
1511	ENDDO
1512
1513	!
1514	!-- Output of time-averaged 2d/3d/masked data
1515	IF ( time_do_av >= dt_data_output_av &
1516	.AND. time_since_reference_point >= skip_time_data_output_av ) THEN
1517	CALL average_3d_data
1518	!
1519	!-- Udate thermal comfort indices based on updated averaged input
1520	IF ( biometeorology .AND. thermal_comfort ) THEN
1521	CALL bio_calculate_thermal_index_maps ( .TRUE. )
1522	ENDIF
1523	CALL data_output_2d( 'xy', 1 )
1524	CALL data_output_2d( 'xz', 1 )
1525	CALL data_output_2d( 'yz', 1 )
1526	CALL data_output_3d( 1 )
1527	DO mid = 1, masks
1528	CALL data_output_mask( 1, mid )
1529	ENDDO
1530	time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
1531	ENDIF
1532	!
1533	!-- Output of surface data, instantaneous and averaged data
1534	IF ( surface_output ) THEN
1535	IF ( time_dosurf >= dt_dosurf .AND. time_since_reference_point >= skip_time_dosurf ) THEN
1536	CALL surface_data_output( 0 )
1537	time_dosurf = MOD( time_dosurf, MAX( dt_dosurf, dt_3d ) )
1538	ENDIF
1539	IF ( time_dosurf_av >= dt_dosurf_av .AND. time_since_reference_point >= skip_time_dosurf_av ) THEN
1540	CALL surface_data_output( 1 )
1541	time_dosurf_av = MOD( time_dosurf_av, MAX( dt_dosurf_av, dt_3d ) )
1542	ENDIF
1543	ENDIF
1544
1545	!
1546	!-- Output of particle time series
1547	IF ( particle_advection ) THEN
1548	IF ( time_dopts >= dt_dopts .OR. &
1549	( time_since_reference_point >= particle_advection_start .AND. &
1550	first_call_lpm ) ) THEN
1551	CALL lpm_data_output_ptseries
1552	time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
1553	ENDIF
1554	ENDIF
1555
1556	!
1557	!-- If required, set the heat flux for the next time step to a random value
1558	IF ( constant_heatflux .AND. random_heatflux ) THEN
1559	IF ( surf_def_h(0)%ns >= 1 ) THEN
1560	CALL cpu_log( log_point(23), 'disturb_heatflux', 'start' )
1561	CALL disturb_heatflux( surf_def_h(0) )
1562	CALL cpu_log( log_point(23), 'disturb_heatflux', 'stop' )
1563	ENDIF
1564	IF ( surf_lsm_h%ns >= 1 ) THEN
1565	CALL cpu_log( log_point(23), 'disturb_heatflux', 'start' )
1566	CALL disturb_heatflux( surf_lsm_h )
1567	CALL cpu_log( log_point(23), 'disturb_heatflux', 'stop' )
1568	ENDIF
1569	IF ( surf_usm_h%ns >= 1 ) THEN
1570	CALL cpu_log( log_point(23), 'disturb_heatflux', 'start' )
1571	CALL disturb_heatflux( surf_usm_h )
1572	CALL cpu_log( log_point(23), 'disturb_heatflux', 'stop' )
1573	ENDIF
1574	ENDIF
1575
1576	!
1577	!-- Execute alle other module actions routunes
1578	CALL module_interface_actions( 'after_timestep' )
1579
1580	!
1581	!-- Determine size of next time step. Save timestep dt_3d because it is
1582	!-- newly calculated in routine timestep, but required further below for
1583	!-- steering the run control output interval
1584	dt_3d_old = dt_3d
1585	CALL timestep
1586
1587	!
1588	!-- Synchronize the timestep in case of nested run.
1589	IF ( nested_run ) THEN
1590	!
1591	!-- Synchronize by unifying the time step.
1592	!-- Global minimum of all time-steps is used for all.
1593	CALL pmci_synchronize
1594	ENDIF
1595
1596	!
1597	!-- Computation and output of run control parameters.
1598	!-- This is also done whenever perturbations have been imposed
1599	IF ( time_run_control >= dt_run_control .OR. &
1600	timestep_scheme(1:5) /= 'runge' .OR. disturbance_created ) &
1601	THEN
1602	CALL run_control
1603	IF ( time_run_control >= dt_run_control ) THEN
1604	time_run_control = MOD( time_run_control, MAX( dt_run_control, dt_3d_old ) )
1605	ENDIF
1606	ENDIF
1607
1608	!
1609	!-- Output elapsed simulated time in form of a progress bar on stdout
1610	IF ( myid == 0 ) CALL output_progress_bar
1611
1612	CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
1613
1614
1615	ENDDO ! time loop
1616
1617	#if defined( _OPENACC )
1618	CALL exit_surface_arrays
1619	#endif
1620	!$ACC END DATA
1621	!$ACC END DATA
1622	!$ACC END DATA
1623	!$ACC END DATA
1624	!$ACC END DATA
1625	!$ACC END DATA
1626	!$ACC END DATA
1627
1628	!
1629	!-- Vertical nesting: Deallocate variables initialized for vertical nesting
1630	IF ( vnest_init ) CALL vnest_deallocate
1631
1632	IF ( myid == 0 ) CALL finish_progress_bar
1633
1634	CALL location_message( 'atmosphere (and/or ocean) time-stepping', 'finished' )
1635
1636	END SUBROUTINE time_integration

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