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source: palm/trunk/SOURCE/time_integration.f90 @ 1921

Last change on this file since 1921 was 1919, checked in by raasch, 9 years ago
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[1682]	1	!> @file time_integration.f90
[1036]	2	!--------------------------------------------------------------------------------!
	3	! This file is part of PALM.
	4	!
	5	! PALM is free software: you can redistribute it and/or modify it under the terms
	6	! of the GNU General Public License as published by the Free Software Foundation,
	7	! either version 3 of the License, or (at your option) any later version.
	8	!
	9	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
	10	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
	11	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
	12	!
	13	! You should have received a copy of the GNU General Public License along with
	14	! PALM. If not, see <http://www.gnu.org/licenses/>.
	15	!
[1818]	16	! Copyright 1997-2016 Leibniz Universitaet Hannover
[1036]	17	!--------------------------------------------------------------------------------!
	18	!
[484]	19	! Current revisions:
[1092]	20	! ------------------
[1854]	21	!
[1919]	22	!
[1366]	23	! Former revisions:
	24	! -----------------
	25	! $Id: time_integration.f90 1919 2016-05-27 14:51:23Z suehring $
	26	!
[1919]	27	! 1918 2016-05-27 14:35:57Z raasch
	28	! determination of time step moved to the end of the time step loop,
	29	! the first time step is now always calculated before the time step loop (i.e.
	30	! also in case of restart runs)
	31	!
[1917]	32	! 1914 2016-05-26 14:44:07Z witha
	33	! Added call for wind turbine model
	34	!
[1879]	35	! 1878 2016-04-19 12:30:36Z hellstea
	36	! Synchronization for nested runs rewritten
	37	!
[1854]	38	! 1853 2016-04-11 09:00:35Z maronga
	39	! Adjusted for use with radiation_scheme = constant
	40	!
[1851]	41	! 1849 2016-04-08 11:33:18Z hoffmann
	42	! Adapted for modularization of microphysics
	43	!
[1834]	44	! 1833 2016-04-07 14:23:03Z raasch
	45	! spectrum renamed spectra_mod, spectra related variables moved to spectra_mod
	46	!
[1832]	47	! 1831 2016-04-07 13:15:51Z hoffmann
	48	! turbulence renamed collision_turbulence
	49	!
[1823]	50	! 1822 2016-04-07 07:49:42Z hoffmann
	51	! icloud_scheme replaced by microphysics_*
	52	!
[1809]	53	! 1808 2016-04-05 19:44:00Z raasch
	54	! output message in case unscheduled radiation calls removed
	55	!
[1798]	56	! 1797 2016-03-21 16:50:28Z raasch
	57	! introduction of different datatransfer modes
	58	!
[1792]	59	! 1791 2016-03-11 10:41:25Z raasch
	60	! call of pmci_update_new removed
	61	!
[1787]	62	! 1786 2016-03-08 05:49:27Z raasch
	63	! +module spectrum
	64	!
[1784]	65	! 1783 2016-03-06 18:36:17Z raasch
	66	! switch back of netcdf data format for mask output moved to the mask output
	67	! routine
	68	!
[1782]	69	! 1781 2016-03-03 15:12:23Z raasch
	70	! some pmc calls removed at the beginning (before timeloop),
	71	! pmc initialization moved to the main program
	72	!
[1765]	73	! 1764 2016-02-28 12:45:19Z raasch
	74	! PMC_ACTIVE flags removed,
	75	! bugfix: nest synchronization after first call of timestep
	76	!
[1763]	77	! 1762 2016-02-25 12:31:13Z hellstea
	78	! Introduction of nested domain feature
	79	!
[1737]	80	! 1736 2015-12-04 08:56:33Z raasch
	81	! no perturbations added to total domain if energy limit has been set zero
	82	!
[1692]	83	! 1691 2015-10-26 16:17:44Z maronga
	84	! Added option for spin-ups without land surface and radiation models. Moved calls
	85	! for radiation and lan surface schemes.
	86	!
[1683]	87	! 1682 2015-10-07 23:56:08Z knoop
	88	! Code annotations made doxygen readable
	89	!
[1672]	90	! 1671 2015-09-25 03:29:37Z raasch
	91	! bugfix: ghostpoint exchange for array diss in case that sgs velocities are used
	92	! for particles
	93	!
[1586]	94	! 1585 2015-04-30 07:05:52Z maronga
	95	! Moved call of radiation scheme. Added support for RRTM
	96	!
[1552]	97	! 1551 2015-03-03 14:18:16Z maronga
	98	! Added interface for different radiation schemes.
	99	!
[1497]	100	! 1496 2014-12-02 17:25:50Z maronga
	101	! Added calls for the land surface model and radiation scheme
	102	!
[1403]	103	! 1402 2014-05-09 14:25:13Z raasch
	104	! location messages modified
	105	!
[1385]	106	! 1384 2014-05-02 14:31:06Z raasch
	107	! location messages added
	108	!
[1381]	109	! 1380 2014-04-28 12:40:45Z heinze
	110	! CALL of nudge_ref added
	111	! bc_pt_t_val and bc_q_t_val are updated in case nudging is used
	112	!
[1366]	113	! 1365 2014-04-22 15:03:56Z boeske
[1365]	114	! Reset sums_ls_l to zero at each timestep
	115	! +sums_ls_l
	116	! Calculation of reference state (previously in subroutine calc_mean_profile)
	117
[1343]	118	! 1342 2014-03-26 17:04:47Z kanani
	119	! REAL constants defined as wp-kind
	120	!
[1321]	121	! 1320 2014-03-20 08:40:49Z raasch
[1320]	122	! ONLY-attribute added to USE-statements,
	123	! kind-parameters added to all INTEGER and REAL declaration statements,
	124	! kinds are defined in new module kinds,
	125	! old module precision_kind is removed,
	126	! revision history before 2012 removed,
	127	! comment fields (!:) to be used for variable explanations added to
	128	! all variable declaration statements
[1319]	129	! 1318 2014-03-17 13:35:16Z raasch
	130	! module interfaces removed
	131	!
[1309]	132	! 1308 2014-03-13 14:58:42Z fricke
	133	! +netcdf_data_format_save
	134	! For masked data, parallel netcdf output is not tested so far, hence
	135	! netcdf_data_format is switched back to non-paralell output.
	136	!
[1277]	137	! 1276 2014-01-15 13:40:41Z heinze
	138	! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars
	139	!
[1258]	140	! 1257 2013-11-08 15:18:40Z raasch
	141	! acc-update-host directive for timestep removed
	142	!
[1242]	143	! 1241 2013-10-30 11:36:58Z heinze
	144	! Generalize calc_mean_profile for wider use
	145	! Determine shf and qsws in dependence on data from LSF_DATA
	146	! Determine ug and vg in dependence on data from LSF_DATA
[1222]	147	! 1221 2013-09-10 08:59:13Z raasch
	148	! host update of arrays before timestep is called
	149	!
[1182]	150	! 1179 2013-06-14 05:57:58Z raasch
	151	! mean profiles for reference state are only calculated if required,
	152	! small bugfix for background communication
	153	!
[1172]	154	! 1171 2013-05-30 11:27:45Z raasch
	155	! split of prognostic_equations deactivated (comment lines), for the time being
	156	!
[1132]	157	! 1128 2013-04-12 06:19:32Z raasch
[1128]	158	! asynchronous transfer of ghost point data realized for acc-optimized version:
	159	! prognostic_equations are first called two times for those points required for
	160	! the left-right and north-south exchange, respectively, and then for the
	161	! remaining points,
	162	! those parts requiring global communication moved from prognostic_equations to
	163	! here
[392]	164	!
[1116]	165	! 1115 2013-03-26 18:16:16Z hoffmann
	166	! calculation of qr and nr is restricted to precipitation
	167	!
[1114]	168	! 1113 2013-03-10 02:48:14Z raasch
	169	! GPU-porting of boundary conditions,
	170	! openACC directives updated
	171	! formal parameter removed from routine boundary_conds
	172	!
[1112]	173	! 1111 2013-03-08 23:54:10Z raasch
	174	! +internal timestep counter for cpu statistics added,
	175	! openACC directives updated
	176	!
[1093]	177	! 1092 2013-02-02 11:24:22Z raasch
	178	! unused variables removed
	179	!
[1066]	180	! 1065 2012-11-22 17:42:36Z hoffmann
	181	! exchange of diss (dissipation rate) in case of turbulence = .TRUE. added
	182	!
[1054]	183	! 1053 2012-11-13 17:11:03Z hoffmann
	184	! exchange of ghost points for nr, qr added
	185	!
[1037]	186	! 1036 2012-10-22 13:43:42Z raasch
	187	! code put under GPL (PALM 3.9)
	188	!
[1020]	189	! 1019 2012-09-28 06:46:45Z raasch
	190	! non-optimized version of prognostic_equations removed
	191	!
[1017]	192	! 1015 2012-09-27 09:23:24Z raasch
	193	! +call of prognostic_equations_acc
	194	!
[1002]	195	! 1001 2012-09-13 14:08:46Z raasch
	196	! all actions concerning leapfrog- and upstream-spline-scheme removed
	197	!
[850]	198	! 849 2012-03-15 10:35:09Z raasch
	199	! advec_particles renamed lpm, first_call_advec_particles renamed first_call_lpm
	200	!
[826]	201	! 825 2012-02-19 03:03:44Z raasch
	202	! wang_collision_kernel renamed wang_kernel
	203	!
[1]	204	! Revision 1.1 1997/08/11 06:19:04 raasch
	205	! Initial revision
	206	!
	207	!
	208	! Description:
	209	! ------------
[1682]	210	!> Integration in time of the model equations, statistical analysis and graphic
	211	!> output
[1]	212	!------------------------------------------------------------------------------!
[1682]	213	SUBROUTINE time_integration
	214
[1]	215
[1320]	216	USE advec_ws, &
	217	ONLY: ws_statistics
	218
	219	USE arrays_3d, &
[1762]	220	ONLY: diss, dzu, e, e_p, nr_p, prho, pt, pt_p, pt_init, q_init, q, &
	221	ql, ql_c, ql_v, ql_vp, qr_p, q_p, ref_state, rho, sa_p, tend, &
	222	u, u_p, v, vpt, v_p, w, w_p
[1320]	223
[1365]	224	USE calc_mean_profile_mod, &
[1320]	225	ONLY: calc_mean_profile
	226
	227	USE control_parameters, &
	228	ONLY: advected_distance_x, advected_distance_y, average_count_3d, &
[1833]	229	averaging_interval, averaging_interval_pr, &
	230	bc_lr_cyc, bc_ns_cyc, bc_pt_t_val, &
[1380]	231	bc_q_t_val, call_psolver_at_all_substeps, cloud_droplets, &
[1691]	232	cloud_physics, constant_flux_layer, constant_heatflux, &
	233	create_disturbances, dopr_n, constant_diffusion, coupling_mode, &
	234	coupling_start_time, current_timestep_number, &
	235	disturbance_created, disturbance_energy_limit, dist_range, &
	236	do_sum, dt_3d, dt_averaging_input, dt_averaging_input_pr, &
	237	dt_coupling, dt_data_output_av, dt_disturb, dt_do2d_xy, &
	238	dt_do2d_xz, dt_do2d_yz, dt_do3d, dt_domask,dt_dopts, dt_dopr, &
[1833]	239	dt_dopr_listing, dt_dots, dt_dvrp, dt_run_control, &
[1320]	240	end_time, first_call_lpm, galilei_transformation, humidity, &
[1822]	241	intermediate_timestep_count, &
[1320]	242	intermediate_timestep_count_max, large_scale_forcing, &
[1822]	243	loop_optimization, lsf_surf, lsf_vert, masks, &
	244	microphysics_seifert, mid, nest_domain, &
[1783]	245	neutral, nr_timesteps_this_run, nudging, &
[1822]	246	ocean, on_device, passive_scalar, &
[1320]	247	prho_reference, pt_reference, pt_slope_offset, random_heatflux, &
	248	run_coupled, simulated_time, simulated_time_chr, &
	249	skip_time_do2d_xy, skip_time_do2d_xz, skip_time_do2d_yz, &
	250	skip_time_do3d, skip_time_domask, skip_time_dopr, &
[1833]	251	skip_time_data_output_av, sloping_surface, &
[1320]	252	stop_dt, terminate_coupled, terminate_run, timestep_scheme, &
	253	time_coupling, time_do2d_xy, time_do2d_xz, time_do2d_yz, &
	254	time_do3d, time_domask, time_dopr, time_dopr_av, &
	255	time_dopr_listing, time_dopts, time_dosp, time_dosp_av, &
	256	time_dots, time_do_av, time_do_sla, time_disturb, time_dvrp, &
[1496]	257	time_run_control, time_since_reference_point, &
[1320]	258	turbulent_inflow, use_initial_profile_as_reference, &
	259	use_single_reference_value, u_gtrans, v_gtrans, ws_scheme_mom, &
	260	ws_scheme_sca
	261
	262	USE cpulog, &
	263	ONLY: cpu_log, log_point, log_point_s
	264
	265	USE indices, &
	266	ONLY: i_left, i_right, j_north, j_south, nbgp, nx, nxl, nxlg, nxr, &
[1918]	267	nxrg, nyn, nyng, nys, nysg, nzb, nzt, nzb_u_inner, nzb_v_inner
[1320]	268
	269	USE interaction_droplets_ptq_mod, &
	270	ONLY: interaction_droplets_ptq
	271
[1918]	272	USE interfaces
	273
[1320]	274	USE kinds
	275
[1496]	276	USE land_surface_model_mod, &
[1691]	277	ONLY: land_surface, lsm_energy_balance, lsm_soil_model, &
	278	skip_time_do_lsm
[1496]	279
[1320]	280	USE ls_forcing_mod, &
	281	ONLY: ls_forcing_surf, ls_forcing_vert
	282
[1849]	283	USE microphysics_mod, &
	284	ONLY: collision_turbulence
	285
[1365]	286	USE nudge_mod, &
[1380]	287	ONLY: calc_tnudge, nudge_ref
[1365]	288
[1320]	289	USE particle_attributes, &
[1671]	290	ONLY: particle_advection, particle_advection_start, &
	291	use_sgs_for_particles, wang_kernel
[1320]	292
[1]	293	USE pegrid
	294
[1762]	295	USE pmc_interface, &
[1764]	296	ONLY: client_to_server, nested_run, nesting_mode, &
[1878]	297	pmci_datatrans, pmci_ensure_nest_mass_conservation, &
	298	pmci_synchronize, server_to_client
[1762]	299
[1320]	300	USE production_e_mod, &
	301	ONLY: production_e_init
	302
[1402]	303	USE progress_bar, &
	304	ONLY: finish_progress_bar, output_progress_bar
	305
[1320]	306	USE prognostic_equations_mod, &
	307	ONLY: prognostic_equations_acc, prognostic_equations_cache, &
	308	prognostic_equations_vector
	309
[1496]	310	USE radiation_model_mod, &
[1691]	311	ONLY: dt_radiation, force_radiation_call, radiation, &
[1853]	312	radiation_clearsky, radiation_constant, radiation_rrtmg, &
	313	radiation_scheme, skip_time_do_radiation, time_radiation
[1496]	314
[1833]	315	USE spectra_mod, &
	316	ONLY: average_count_sp, averaging_interval_sp, calc_spectra, dt_dosp, &
	317	skip_time_dosp
[1786]	318
[1320]	319	USE statistics, &
[1918]	320	ONLY: flow_statistics_called, hom, pr_palm, sums_ls_l, u_max, &
	321	u_max_ijk, v_max, v_max_ijk, w_max, w_max_ijk
[1320]	322
[1691]	323	USE surface_layer_fluxes_mod, &
	324	ONLY: surface_layer_fluxes
	325
[1320]	326	USE user_actions_mod, &
	327	ONLY: user_actions
	328
[1914]	329	USE wind_turbine_model_mod, &
	330	ONLY: wind_turbine, wtm_forces
	331
[1]	332	IMPLICIT NONE
	333
[1682]	334	CHARACTER (LEN=9) :: time_to_string !<
[1]	335
[1918]	336	REAL(wp) :: dt_3d_old !< temporary storage of timestep to be used for
	337	!< steering of run control output interval
	338
[1]	339	!
[1918]	340	!-- At beginning determine the first time step
	341	CALL timestep
[667]	342
[1764]	343	!
	344	!-- Synchronize the timestep in case of nested run.
	345	IF ( nested_run ) THEN
[1878]	346	!
	347	!-- Synchronization by unifying the time step.
	348	!-- Global minimum of all time-steps is used for all.
	349	CALL pmci_synchronize
[1764]	350	ENDIF
	351
[1918]	352	!
	353	!-- Determine and print out the run control quantities before the first time
	354	!-- step of this run. For the initial run, some statistics (e.g. divergence)
	355	!-- need to be determined first.
	356	IF ( simulated_time == 0.0_wp ) CALL flow_statistics
[1]	357	CALL run_control
	358
[108]	359	!
	360	!-- Data exchange between coupled models in case that a call has been omitted
	361	!-- at the end of the previous run of a job chain.
[291]	362	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[108]	363	!
	364	!-- In case of model termination initiated by the local model the coupler
	365	!-- must not be called because this would again cause an MPI hang.
[1918]	366	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
[108]	367	CALL surface_coupler
	368	time_coupling = time_coupling - dt_coupling
	369	ENDDO
[1918]	370	IF (time_coupling == 0.0_wp .AND. &
	371	time_since_reference_point < dt_coupling ) &
[348]	372	THEN
	373	time_coupling = time_since_reference_point
	374	ENDIF
[108]	375	ENDIF
	376
[1]	377	#if defined( __dvrp_graphics )
	378	!
	379	!-- Time measurement with dvrp software
	380	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	381	#endif
	382
[1402]	383	CALL location_message( 'start with time-stepping', .TRUE. )
[1]	384	!
	385	!-- Start of the time loop
	386	DO WHILE ( simulated_time < end_time .AND. .NOT. stop_dt .AND. &
	387	.NOT. terminate_run )
	388
	389	CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
[1221]	390
[1]	391	!
[1241]	392	!-- Determine ug, vg and w_subs in dependence on data from external file
	393	!-- LSF_DATA
[1365]	394	IF ( large_scale_forcing .AND. lsf_vert ) THEN
[1241]	395	CALL ls_forcing_vert ( simulated_time )
[1365]	396	sums_ls_l = 0.0_wp
[1241]	397	ENDIF
	398
	399	!
[1380]	400	!-- Set pt_init and q_init to the current profiles taken from
	401	!-- NUDGING_DATA
	402	IF ( nudging ) THEN
	403	CALL nudge_ref ( simulated_time )
	404	!
	405	!-- Store temperature gradient at the top boundary for possible Neumann
	406	!-- boundary condition
	407	bc_pt_t_val = ( pt_init(nzt+1) - pt_init(nzt) ) / dzu(nzt+1)
	408	bc_q_t_val = ( q_init(nzt+1) - q_init(nzt) ) / dzu(nzt+1)
	409	ENDIF
	410
	411	!
[1]	412	!-- Execute the user-defined actions
	413	CALL user_actions( 'before_timestep' )
	414
	415	!
[1914]	416	!-- Calculate forces by wind turbines
	417	IF ( wind_turbine ) THEN
	418
	419	CALL cpu_log( log_point(55), 'wind_turbine', 'start' )
	420
	421	CALL wtm_forces
	422
	423	CALL cpu_log( log_point(55), 'wind_turbine', 'stop' )
	424
	425	ENDIF
	426
	427	!
[1]	428	!-- Start of intermediate step loop
	429	intermediate_timestep_count = 0
	430	DO WHILE ( intermediate_timestep_count < &
	431	intermediate_timestep_count_max )
	432
	433	intermediate_timestep_count = intermediate_timestep_count + 1
	434
	435	!
	436	!-- Set the steering factors for the prognostic equations which depend
	437	!-- on the timestep scheme
	438	CALL timestep_scheme_steering
	439
	440	!
[1128]	441	!-- Calculate those variables needed in the tendency terms which need
	442	!-- global communication
[1179]	443	IF ( .NOT. use_single_reference_value .AND. &
	444	.NOT. use_initial_profile_as_reference ) THEN
	445	!
	446	!-- Horizontally averaged profiles to be used as reference state in
	447	!-- buoyancy terms (WARNING: only the respective last call of
	448	!-- calc_mean_profile defines the reference state!)
[1365]	449	IF ( .NOT. neutral ) THEN
	450	CALL calc_mean_profile( pt, 4 )
	451	ref_state(:) = hom(:,1,4,0) ! this is used in the buoyancy term
	452	ENDIF
	453	IF ( ocean ) THEN
	454	CALL calc_mean_profile( rho, 64 )
	455	ref_state(:) = hom(:,1,64,0)
	456	ENDIF
	457	IF ( humidity ) THEN
	458	CALL calc_mean_profile( vpt, 44 )
	459	ref_state(:) = hom(:,1,44,0)
	460	ENDIF
	461
[1179]	462	ENDIF
	463
[1128]	464	IF ( .NOT. constant_diffusion ) CALL production_e_init
	465	IF ( ( ws_scheme_mom .OR. ws_scheme_sca ) .AND. &
	466	intermediate_timestep_count == 1 ) CALL ws_statistics
[1365]	467	!
	468	!-- In case of nudging calculate current nudging time scale and horizontal
[1380]	469	!-- means of u, v, pt and q
[1365]	470	IF ( nudging ) THEN
	471	CALL calc_tnudge( simulated_time )
	472	CALL calc_mean_profile( u, 1 )
	473	CALL calc_mean_profile( v, 2 )
	474	CALL calc_mean_profile( pt, 4 )
	475	CALL calc_mean_profile( q, 41 )
	476	ENDIF
[1128]	477
	478	!
[1]	479	!-- Solve the prognostic equations. A fast cache optimized version with
	480	!-- only one single loop is used in case of Piascek-Williams advection
	481	!-- scheme. NEC vector machines use a different version, because
	482	!-- in the other versions a good vectorization is prohibited due to
	483	!-- inlining problems.
[1019]	484	IF ( loop_optimization == 'cache' ) THEN
	485	CALL prognostic_equations_cache
	486	ELSEIF ( loop_optimization == 'vector' ) THEN
[63]	487	CALL prognostic_equations_vector
[1015]	488	ELSEIF ( loop_optimization == 'acc' ) THEN
[1171]	489	i_left = nxl; i_right = nxr
	490	j_south = nys; j_north = nyn
	491	CALL prognostic_equations_acc
	492
	493	! i_left = nxl; i_right = nxl+nbgp-1
[1128]	494	! j_south = nys; j_north = nyn
	495	! CALL prognostic_equations_acc
[1171]	496	! i_left = nxr-nbgp+1; i_right = nxr
	497	! j_south = nys; j_north = nyn
	498	! CALL prognostic_equations_acc
[1128]	499
	500	!
	501	!-- Exchange of ghost points (lateral boundary conditions)
	502	IF ( background_communication ) THEN
	503
	504	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
	505
	506	send_receive = 'lr'
	507	sendrecv_in_background = .TRUE.
	508	req = 0
	509	req_count = 0
	510
	511	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	512	on_device = .TRUE. ! to be removed after complete porting
	513	ELSE ! of ghost point exchange
	514	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	515	ENDIF
	516
	517	CALL exchange_horiz( u_p, nbgp )
	518	CALL exchange_horiz( v_p, nbgp )
	519	CALL exchange_horiz( w_p, nbgp )
	520	CALL exchange_horiz( pt_p, nbgp )
	521	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	522	IF ( ocean ) THEN
	523	CALL exchange_horiz( sa_p, nbgp )
	524	CALL exchange_horiz( rho, nbgp )
	525	CALL exchange_horiz( prho, nbgp )
	526	ENDIF
	527	IF (humidity .OR. passive_scalar) THEN
	528	CALL exchange_horiz( q_p, nbgp )
[1822]	529	IF ( cloud_physics .AND. microphysics_seifert ) THEN
[1128]	530	CALL exchange_horiz( qr_p, nbgp )
	531	CALL exchange_horiz( nr_p, nbgp )
	532	ENDIF
	533	ENDIF
	534	IF ( cloud_droplets ) THEN
	535	CALL exchange_horiz( ql, nbgp )
	536	CALL exchange_horiz( ql_c, nbgp )
	537	CALL exchange_horiz( ql_v, nbgp )
	538	CALL exchange_horiz( ql_vp, nbgp )
	539	ENDIF
[1831]	540	IF ( wang_kernel .OR. collision_turbulence .OR. &
	541	use_sgs_for_particles ) THEN
[1671]	542	CALL exchange_horiz( diss, nbgp )
	543	ENDIF
[1128]	544
	545	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	546	on_device = .FALSE. ! to be removed after complete porting
	547	ELSE ! of ghost point exchange
	548	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	549	ENDIF
	550
	551	sendrecv_in_background = .FALSE.
	552
	553	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'pause' )
	554
	555	ENDIF
	556
[1171]	557	! i_left = nxl+nbgp; i_right = nxr-nbgp
	558	! j_south = nys; j_north = nys+nbgp-1
	559	! CALL prognostic_equations_acc
	560	! i_left = nxl+nbgp; i_right = nxr-nbgp
	561	! j_south = nyn-nbgp+1; j_north = nyn
	562	! CALL prognostic_equations_acc
[1128]	563
	564	IF ( background_communication ) THEN
	565	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'start' )
	566	#if defined( __parallel )
	567	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	568	#endif
	569	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'pause' )
	570
	571	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'continue' )
	572
	573	send_receive = 'ns'
	574	sendrecv_in_background = .TRUE.
	575	req = 0
	576	req_count = 0
	577
	578	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	579	on_device = .TRUE. ! to be removed after complete porting
	580	ELSE ! of ghost point exchange
	581	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	582	ENDIF
	583
	584	CALL exchange_horiz( u_p, nbgp )
	585	CALL exchange_horiz( v_p, nbgp )
	586	CALL exchange_horiz( w_p, nbgp )
	587	CALL exchange_horiz( pt_p, nbgp )
	588	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	589	IF ( ocean ) THEN
	590	CALL exchange_horiz( sa_p, nbgp )
	591	CALL exchange_horiz( rho, nbgp )
	592	CALL exchange_horiz( prho, nbgp )
	593	ENDIF
	594	IF (humidity .OR. passive_scalar) THEN
	595	CALL exchange_horiz( q_p, nbgp )
[1822]	596	IF ( cloud_physics .AND. microphysics_seifert ) THEN
[1128]	597	CALL exchange_horiz( qr_p, nbgp )
	598	CALL exchange_horiz( nr_p, nbgp )
	599	ENDIF
	600	ENDIF
	601	IF ( cloud_droplets ) THEN
	602	CALL exchange_horiz( ql, nbgp )
	603	CALL exchange_horiz( ql_c, nbgp )
	604	CALL exchange_horiz( ql_v, nbgp )
	605	CALL exchange_horiz( ql_vp, nbgp )
	606	ENDIF
[1831]	607	IF ( wang_kernel .OR. collision_turbulence .OR. &
	608	use_sgs_for_particles ) THEN
[1671]	609	CALL exchange_horiz( diss, nbgp )
	610	ENDIF
[1128]	611
	612	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	613	on_device = .FALSE. ! to be removed after complete porting
	614	ELSE ! of ghost point exchange
	615	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	616	ENDIF
	617
	618	sendrecv_in_background = .FALSE.
	619
	620	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	621
	622	ENDIF
	623
[1171]	624	! i_left = nxl+nbgp; i_right = nxr-nbgp
	625	! j_south = nys+nbgp; j_north = nyn-nbgp
	626	! CALL prognostic_equations_acc
[1128]	627
	628	IF ( background_communication ) THEN
	629	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'continue' )
	630	#if defined( __parallel )
	631	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	632	#endif
	633	send_receive = 'al'
	634	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'stop' )
	635	ENDIF
	636
[1]	637	ENDIF
	638
	639	!
[849]	640	!-- Particle transport/physics with the Lagrangian particle model
	641	!-- (only once during intermediate steps, because it uses an Euler-step)
[1128]	642	!-- ### particle model should be moved before prognostic_equations, in order
	643	!-- to regard droplet interactions directly
[63]	644	IF ( particle_advection .AND. &
	645	simulated_time >= particle_advection_start .AND. &
[1]	646	intermediate_timestep_count == 1 ) THEN
[849]	647	CALL lpm
	648	first_call_lpm = .FALSE.
[1]	649	ENDIF
	650
	651	!
	652	!-- Interaction of droplets with temperature and specific humidity.
	653	!-- Droplet condensation and evaporation is calculated within
	654	!-- advec_particles.
	655	IF ( cloud_droplets .AND. &
	656	intermediate_timestep_count == intermediate_timestep_count_max )&
	657	THEN
	658	CALL interaction_droplets_ptq
	659	ENDIF
	660
	661	!
	662	!-- Exchange of ghost points (lateral boundary conditions)
[1128]	663	IF ( .NOT. background_communication ) THEN
[1113]	664
[1128]	665	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
[1113]	666
[1128]	667	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	668	on_device = .TRUE. ! to be removed after complete porting
	669	ELSE ! of ghost point exchange
	670	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
[1053]	671	ENDIF
[1]	672
[1128]	673	CALL exchange_horiz( u_p, nbgp )
	674	CALL exchange_horiz( v_p, nbgp )
	675	CALL exchange_horiz( w_p, nbgp )
	676	CALL exchange_horiz( pt_p, nbgp )
	677	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	678	IF ( ocean ) THEN
	679	CALL exchange_horiz( sa_p, nbgp )
	680	CALL exchange_horiz( rho, nbgp )
	681	CALL exchange_horiz( prho, nbgp )
	682	ENDIF
	683	IF (humidity .OR. passive_scalar) THEN
	684	CALL exchange_horiz( q_p, nbgp )
[1822]	685	IF ( cloud_physics .AND. microphysics_seifert ) THEN
[1128]	686	CALL exchange_horiz( qr_p, nbgp )
	687	CALL exchange_horiz( nr_p, nbgp )
	688	ENDIF
	689	ENDIF
	690	IF ( cloud_droplets ) THEN
	691	CALL exchange_horiz( ql, nbgp )
	692	CALL exchange_horiz( ql_c, nbgp )
	693	CALL exchange_horiz( ql_v, nbgp )
	694	CALL exchange_horiz( ql_vp, nbgp )
	695	ENDIF
[1831]	696	IF ( wang_kernel .OR. collision_turbulence .OR. &
	697	use_sgs_for_particles ) THEN
[1671]	698	CALL exchange_horiz( diss, nbgp )
	699	ENDIF
[1128]	700
	701	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	702	on_device = .FALSE. ! to be removed after complete porting
	703	ELSE ! of ghost point exchange
	704	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	705	ENDIF
	706
	707	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	708
[1113]	709	ENDIF
	710
[1]	711	!
	712	!-- Boundary conditions for the prognostic quantities (except of the
	713	!-- velocities at the outflow in case of a non-cyclic lateral wall)
[1113]	714	CALL boundary_conds
[1]	715
	716	!
[73]	717	!-- Swap the time levels in preparation for the next time step.
	718	CALL swap_timelevel
	719
[1764]	720	IF ( nested_run ) THEN
[1797]	721
[1764]	722	CALL cpu_log( log_point(60), 'nesting', 'start' )
[1762]	723	!
[1797]	724	!-- Domain nesting. The data transfer subroutines pmci_server_datatrans
	725	!-- and pmci_client_datatatrans are called inside the wrapper
	726	!-- subroutine pmci_datatrans according to the control parameters
	727	!-- nesting_mode and nesting_datatransfer_mode.
	728	!-- TO_DO: why is nesting_mode given as a parameter here?
	729	CALL pmci_datatrans( nesting_mode )
[1762]	730
[1764]	731	IF ( nesting_mode == 'two-way' ) THEN
[1762]	732	!
[1764]	733	!-- Exchange_horiz is needed for all server-domains after the
	734	!-- anterpolation
	735	CALL exchange_horiz( u, nbgp )
	736	CALL exchange_horiz( v, nbgp )
	737	CALL exchange_horiz( w, nbgp )
	738	CALL exchange_horiz( pt, nbgp )
	739	IF ( humidity .OR. passive_scalar ) THEN
	740	CALL exchange_horiz( q, nbgp )
	741	ENDIF
	742	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e, nbgp )
[1762]	743	ENDIF
	744	!
[1764]	745	!-- Correct the w top-BC in nest domains to ensure mass conservation.
	746	!-- This action must never be done for the root domain.
	747	IF ( nest_domain ) THEN
	748	CALL pmci_ensure_nest_mass_conservation
	749	ENDIF
	750
	751	CALL cpu_log( log_point(60), 'nesting', 'stop' )
	752
[1762]	753	ENDIF
	754
	755	!
[1]	756	!-- Temperature offset must be imposed at cyclic boundaries in x-direction
	757	!-- when a sloping surface is used
	758	IF ( sloping_surface ) THEN
[707]	759	IF ( nxl == 0 ) pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - &
	760	pt_slope_offset
	761	IF ( nxr == nx ) pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + &
	762	pt_slope_offset
[1]	763	ENDIF
	764
	765	!
[151]	766	!-- Impose a turbulent inflow using the recycling method
	767	IF ( turbulent_inflow ) CALL inflow_turbulence
	768
	769	!
[1]	770	!-- Impose a random perturbation on the horizontal velocity field
[106]	771	IF ( create_disturbances .AND. &
	772	( call_psolver_at_all_substeps .AND. &
[1]	773	intermediate_timestep_count == intermediate_timestep_count_max )&
[106]	774	.OR. ( .NOT. call_psolver_at_all_substeps .AND. &
	775	intermediate_timestep_count == 1 ) ) &
[1]	776	THEN
	777	time_disturb = time_disturb + dt_3d
	778	IF ( time_disturb >= dt_disturb ) THEN
[1111]	779	!$acc update host( u, v )
[1113]	780	IF ( numprocs == 1 ) on_device = .FALSE. ! workaround, remove later
[1736]	781	IF ( disturbance_energy_limit /= 0.0_wp .AND. &
	782	hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit ) THEN
[75]	783	CALL disturb_field( nzb_u_inner, tend, u )
	784	CALL disturb_field( nzb_v_inner, tend, v )
[707]	785	ELSEIF ( .NOT. bc_lr_cyc .OR. .NOT. bc_ns_cyc ) THEN
[1]	786	!
	787	!-- Runs with a non-cyclic lateral wall need perturbations
	788	!-- near the inflow throughout the whole simulation
	789	dist_range = 1
[75]	790	CALL disturb_field( nzb_u_inner, tend, u )
	791	CALL disturb_field( nzb_v_inner, tend, v )
[1]	792	dist_range = 0
	793	ENDIF
[1113]	794	IF ( numprocs == 1 ) on_device = .TRUE. ! workaround, remove later
[1111]	795	!$acc update device( u, v )
[1]	796	time_disturb = time_disturb - dt_disturb
	797	ENDIF
	798	ENDIF
	799
	800	!
	801	!-- Reduce the velocity divergence via the equation for perturbation
	802	!-- pressure.
[106]	803	IF ( intermediate_timestep_count == 1 .OR. &
	804	call_psolver_at_all_substeps ) THEN
[1]	805	CALL pres
	806	ENDIF
	807
	808	!
	809	!-- If required, compute liquid water content
[1015]	810	IF ( cloud_physics ) THEN
	811	CALL calc_liquid_water_content
	812	!$acc update device( ql )
	813	ENDIF
[1115]	814	!
	815	!-- If required, compute virtual potential temperature
	816	IF ( humidity ) THEN
	817	CALL compute_vpt
	818	!$acc update device( vpt )
	819	ENDIF
[1585]	820
[1]	821	!
	822	!-- Compute the diffusion quantities
	823	IF ( .NOT. constant_diffusion ) THEN
	824
	825	!
[1276]	826	!-- Determine surface fluxes shf and qsws and surface values
	827	!-- pt_surface and q_surface in dependence on data from external
	828	!-- file LSF_DATA respectively
	829	IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
	830	intermediate_timestep_count == intermediate_timestep_count_max )&
	831	THEN
	832	CALL ls_forcing_surf ( simulated_time )
	833	ENDIF
	834
	835	!
[1691]	836	!-- First the vertical fluxes in the surface (constant flux) layer are computed
	837	IF ( constant_flux_layer ) THEN
	838	CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'start' )
	839	CALL surface_layer_fluxes
	840	CALL cpu_log( log_point(19), 'surface_layer_fluxes', 'stop' )
[1]	841	ENDIF
[1241]	842
[1]	843	!
[1691]	844	!-- If required, solve the energy balance for the surface and run soil
	845	!-- model
	846	IF ( land_surface .AND. simulated_time > skip_time_do_lsm) THEN
	847
	848	CALL cpu_log( log_point(54), 'land_surface', 'start' )
	849	CALL lsm_energy_balance
	850	CALL lsm_soil_model
	851	CALL cpu_log( log_point(54), 'land_surface', 'stop' )
	852	ENDIF
	853	!
[1]	854	!-- Compute the diffusion coefficients
	855	CALL cpu_log( log_point(17), 'diffusivities', 'start' )
[75]	856	IF ( .NOT. humidity ) THEN
[97]	857	IF ( ocean ) THEN
[388]	858	CALL diffusivities( prho, prho_reference )
[97]	859	ELSE
	860	CALL diffusivities( pt, pt_reference )
	861	ENDIF
[1]	862	ELSE
[97]	863	CALL diffusivities( vpt, pt_reference )
[1]	864	ENDIF
	865	CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
	866
	867	ENDIF
	868
[1691]	869	!
	870	!-- If required, calculate radiative fluxes and heating rates
	871	IF ( radiation .AND. intermediate_timestep_count &
	872	== intermediate_timestep_count_max .AND. simulated_time > &
	873	skip_time_do_radiation ) THEN
	874
	875	time_radiation = time_radiation + dt_3d
	876
	877	IF ( time_radiation >= dt_radiation .OR. force_radiation_call ) &
	878	THEN
	879
	880	CALL cpu_log( log_point(50), 'radiation', 'start' )
	881
	882	IF ( .NOT. force_radiation_call ) THEN
	883	time_radiation = time_radiation - dt_radiation
	884	ENDIF
	885
	886	IF ( radiation_scheme == 'clear-sky' ) THEN
	887	CALL radiation_clearsky
	888	ELSEIF ( radiation_scheme == 'rrtmg' ) THEN
	889	CALL radiation_rrtmg
[1853]	890	ELSE
	891	CALL radiation_constant
[1691]	892	ENDIF
	893
	894	CALL cpu_log( log_point(50), 'radiation', 'stop' )
	895	ENDIF
	896	ENDIF
	897
[1]	898	ENDDO ! Intermediate step loop
	899
	900	!
	901	!-- Increase simulation time and output times
[1111]	902	nr_timesteps_this_run = nr_timesteps_this_run + 1
[291]	903	current_timestep_number = current_timestep_number + 1
	904	simulated_time = simulated_time + dt_3d
	905	simulated_time_chr = time_to_string( simulated_time )
	906	time_since_reference_point = simulated_time - coupling_start_time
	907
[1]	908	IF ( simulated_time >= skip_time_data_output_av ) THEN
	909	time_do_av = time_do_av + dt_3d
	910	ENDIF
	911	IF ( simulated_time >= skip_time_do2d_xy ) THEN
	912	time_do2d_xy = time_do2d_xy + dt_3d
	913	ENDIF
	914	IF ( simulated_time >= skip_time_do2d_xz ) THEN
	915	time_do2d_xz = time_do2d_xz + dt_3d
	916	ENDIF
	917	IF ( simulated_time >= skip_time_do2d_yz ) THEN
	918	time_do2d_yz = time_do2d_yz + dt_3d
	919	ENDIF
	920	IF ( simulated_time >= skip_time_do3d ) THEN
	921	time_do3d = time_do3d + dt_3d
	922	ENDIF
[410]	923	DO mid = 1, masks
	924	IF ( simulated_time >= skip_time_domask(mid) ) THEN
	925	time_domask(mid)= time_domask(mid) + dt_3d
	926	ENDIF
	927	ENDDO
[1]	928	time_dvrp = time_dvrp + dt_3d
	929	IF ( simulated_time >= skip_time_dosp ) THEN
	930	time_dosp = time_dosp + dt_3d
	931	ENDIF
	932	time_dots = time_dots + dt_3d
[849]	933	IF ( .NOT. first_call_lpm ) THEN
[1]	934	time_dopts = time_dopts + dt_3d
	935	ENDIF
	936	IF ( simulated_time >= skip_time_dopr ) THEN
	937	time_dopr = time_dopr + dt_3d
	938	ENDIF
	939	time_dopr_listing = time_dopr_listing + dt_3d
	940	time_run_control = time_run_control + dt_3d
	941
	942	!
[102]	943	!-- Data exchange between coupled models
[291]	944	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[102]	945	time_coupling = time_coupling + dt_3d
[343]	946
[108]	947	!
	948	!-- In case of model termination initiated by the local model
	949	!-- (terminate_coupled > 0), the coupler must be skipped because it would
	950	!-- cause an MPI intercomminucation hang.
	951	!-- If necessary, the coupler will be called at the beginning of the
	952	!-- next restart run.
	953	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
[102]	954	CALL surface_coupler
	955	time_coupling = time_coupling - dt_coupling
	956	ENDDO
	957	ENDIF
	958
	959	!
[46]	960	!-- Execute user-defined actions
	961	CALL user_actions( 'after_integration' )
	962
	963	!
[1]	964	!-- If Galilei transformation is used, determine the distance that the
	965	!-- model has moved so far
	966	IF ( galilei_transformation ) THEN
	967	advected_distance_x = advected_distance_x + u_gtrans * dt_3d
	968	advected_distance_y = advected_distance_y + v_gtrans * dt_3d
	969	ENDIF
	970
	971	!
	972	!-- Check, if restart is necessary (because cpu-time is expiring or
	973	!-- because it is forced by user) and set stop flag
[108]	974	!-- This call is skipped if the remote model has already initiated a restart.
	975	IF ( .NOT. terminate_run ) CALL check_for_restart
[1]	976
	977	!
	978	!-- Carry out statistical analysis and output at the requested output times.
	979	!-- The MOD function is used for calculating the output time counters (like
	980	!-- time_dopr) in order to regard a possible decrease of the output time
	981	!-- interval in case of restart runs
	982
	983	!
	984	!-- Set a flag indicating that so far no statistics have been created
	985	!-- for this time step
	986	flow_statistics_called = .FALSE.
	987
	988	!
	989	!-- If required, call flow_statistics for averaging in time
[1342]	990	IF ( averaging_interval_pr /= 0.0_wp .AND. &
[1]	991	( dt_dopr - time_dopr ) <= averaging_interval_pr .AND. &
	992	simulated_time >= skip_time_dopr ) THEN
	993	time_dopr_av = time_dopr_av + dt_3d
	994	IF ( time_dopr_av >= dt_averaging_input_pr ) THEN
	995	do_sum = .TRUE.
	996	time_dopr_av = MOD( time_dopr_av, &
	997	MAX( dt_averaging_input_pr, dt_3d ) )
	998	ENDIF
	999	ENDIF
	1000	IF ( do_sum ) CALL flow_statistics
	1001
	1002	!
[410]	1003	!-- Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
[1342]	1004	IF ( averaging_interval /= 0.0_wp .AND. &
[1]	1005	( dt_data_output_av - time_do_av ) <= averaging_interval .AND. &
	1006	simulated_time >= skip_time_data_output_av ) &
	1007	THEN
	1008	time_do_sla = time_do_sla + dt_3d
	1009	IF ( time_do_sla >= dt_averaging_input ) THEN
	1010	CALL sum_up_3d_data
	1011	average_count_3d = average_count_3d + 1
	1012	time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
	1013	ENDIF
	1014	ENDIF
	1015
	1016	!
	1017	!-- Calculate spectra for time averaging
[1342]	1018	IF ( averaging_interval_sp /= 0.0_wp .AND. &
[1]	1019	( dt_dosp - time_dosp ) <= averaging_interval_sp .AND. &
	1020	simulated_time >= skip_time_dosp ) THEN
	1021	time_dosp_av = time_dosp_av + dt_3d
	1022	IF ( time_dosp_av >= dt_averaging_input_pr ) THEN
	1023	CALL calc_spectra
	1024	time_dosp_av = MOD( time_dosp_av, &
	1025	MAX( dt_averaging_input_pr, dt_3d ) )
	1026	ENDIF
	1027	ENDIF
	1028
	1029	!
	1030	!-- Profile output (ASCII) on file
	1031	IF ( time_dopr_listing >= dt_dopr_listing ) THEN
	1032	CALL print_1d
	1033	time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, &
	1034	dt_3d ) )
	1035	ENDIF
	1036
	1037	!
	1038	!-- Graphic output for PROFIL
	1039	IF ( time_dopr >= dt_dopr ) THEN
	1040	IF ( dopr_n /= 0 ) CALL data_output_profiles
	1041	time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
[1342]	1042	time_dopr_av = 0.0_wp ! due to averaging (see above)
[1]	1043	ENDIF
	1044
	1045	!
	1046	!-- Graphic output for time series
	1047	IF ( time_dots >= dt_dots ) THEN
[48]	1048	CALL data_output_tseries
[1]	1049	time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
	1050	ENDIF
	1051
	1052	!
	1053	!-- Output of spectra (formatted for use with PROFIL), in case of no
	1054	!-- time averaging, spectra has to be calculated before
	1055	IF ( time_dosp >= dt_dosp ) THEN
	1056	IF ( average_count_sp == 0 ) CALL calc_spectra
	1057	CALL data_output_spectra
	1058	time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
	1059	ENDIF
	1060
	1061	!
	1062	!-- 2d-data output (cross-sections)
	1063	IF ( time_do2d_xy >= dt_do2d_xy ) THEN
	1064	CALL data_output_2d( 'xy', 0 )
	1065	time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
	1066	ENDIF
	1067	IF ( time_do2d_xz >= dt_do2d_xz ) THEN
	1068	CALL data_output_2d( 'xz', 0 )
	1069	time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
	1070	ENDIF
	1071	IF ( time_do2d_yz >= dt_do2d_yz ) THEN
	1072	CALL data_output_2d( 'yz', 0 )
	1073	time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
	1074	ENDIF
	1075
	1076	!
	1077	!-- 3d-data output (volume data)
	1078	IF ( time_do3d >= dt_do3d ) THEN
	1079	CALL data_output_3d( 0 )
	1080	time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
	1081	ENDIF
	1082
	1083	!
[1783]	1084	!-- Masked data output
[410]	1085	DO mid = 1, masks
	1086	IF ( time_domask(mid) >= dt_domask(mid) ) THEN
	1087	CALL data_output_mask( 0 )
	1088	time_domask(mid) = MOD( time_domask(mid), &
	1089	MAX( dt_domask(mid), dt_3d ) )
	1090	ENDIF
	1091	ENDDO
	1092
	1093	!
	1094	!-- Output of time-averaged 2d/3d/masked data
[1]	1095	IF ( time_do_av >= dt_data_output_av ) THEN
	1096	CALL average_3d_data
	1097	CALL data_output_2d( 'xy', 1 )
	1098	CALL data_output_2d( 'xz', 1 )
	1099	CALL data_output_2d( 'yz', 1 )
	1100	CALL data_output_3d( 1 )
[410]	1101	DO mid = 1, masks
	1102	CALL data_output_mask( 1 )
	1103	ENDDO
[1]	1104	time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
	1105	ENDIF
	1106
	1107	!
	1108	!-- Output of particle time series
[253]	1109	IF ( particle_advection ) THEN
	1110	IF ( time_dopts >= dt_dopts .OR. &
	1111	( simulated_time >= particle_advection_start .AND. &
[849]	1112	first_call_lpm ) ) THEN
[253]	1113	CALL data_output_ptseries
	1114	time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
	1115	ENDIF
[1]	1116	ENDIF
	1117
	1118	!
	1119	!-- Output of dvrp-graphics (isosurface, particles, slicer)
	1120	#if defined( __dvrp_graphics )
	1121	CALL DVRP_LOG_EVENT( -2, current_timestep_number-1 )
	1122	#endif
	1123	IF ( time_dvrp >= dt_dvrp ) THEN
	1124	CALL data_output_dvrp
	1125	time_dvrp = MOD( time_dvrp, MAX( dt_dvrp, dt_3d ) )
	1126	ENDIF
	1127	#if defined( __dvrp_graphics )
	1128	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	1129	#endif
	1130
	1131	!
	1132	!-- If required, set the heat flux for the next time step at a random value
	1133	IF ( constant_heatflux .AND. random_heatflux ) CALL disturb_heatflux
	1134
	1135	!
	1136	!-- Execute user-defined actions
	1137	CALL user_actions( 'after_timestep' )
	1138
[1402]	1139	!
[1918]	1140	!-- Determine size of next time step. Save timestep dt_3d because it is
	1141	!-- newly calculated in routine timestep, but required further below for
	1142	!-- steering the run control output interval
	1143	dt_3d_old = dt_3d
	1144	CALL timestep
	1145
	1146	!
	1147	!-- Computation and output of run control parameters.
	1148	!-- This is also done whenever perturbations have been imposed
	1149	IF ( time_run_control >= dt_run_control .OR. &
	1150	timestep_scheme(1:5) /= 'runge' .OR. disturbance_created ) &
	1151	THEN
	1152	! IF ( current_timestep_number == 1 ) THEN
	1153	! IF ( nxl < 7 .AND. nxr > 7 .AND. nys < 7 .AND. nyn > 7 ) THEN
	1154	! u(10,7,7) = 0.55
	1155	! ENDIF
	1156	! PRINT*, 'calculating minmax'
	1157	! CALL global_min_max( nzb, nzt+1, nysg, nyng, nxlg, nxrg, u, &
	1158	! 'abs', 0.0_wp, u_max, u_max_ijk )
	1159	! CALL global_min_max( nzb, nzt+1, nysg, nyng, nxlg, nxrg, v, &
	1160	! 'abs', 0.0_wp, v_max, v_max_ijk )
	1161	! CALL global_min_max( nzb, nzt+1, nysg, nyng, nxlg, nxrg, w, &
	1162	! 'abs', 0.0_wp, w_max, w_max_ijk )
	1163	! PRINT*, 'calculated u_max = ', u_max, ' myid = ', myid
	1164	! ENDIF
	1165	CALL run_control
	1166	IF ( time_run_control >= dt_run_control ) THEN
	1167	time_run_control = MOD( time_run_control, &
	1168	MAX( dt_run_control, dt_3d_old ) )
	1169	ENDIF
	1170	ENDIF
	1171
	1172	!
	1173	!-- Synchronize the timestep in case of nested run.
	1174	IF ( nested_run ) THEN
	1175	!
	1176	!-- Synchronize by unifying the time step.
	1177	!-- Global minimum of all time-steps is used for all.
	1178	CALL pmci_synchronize
	1179	ENDIF
	1180
	1181	!
[1402]	1182	!-- Output elapsed simulated time in form of a progress bar on stdout
	1183	IF ( myid == 0 ) CALL output_progress_bar
	1184
[1]	1185	CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
	1186
[667]	1187
[1]	1188	ENDDO ! time loop
	1189
[1402]	1190	IF ( myid == 0 ) CALL finish_progress_bar
	1191
[1]	1192	#if defined( __dvrp_graphics )
	1193	CALL DVRP_LOG_EVENT( -2, current_timestep_number )
	1194	#endif
	1195
[1402]	1196	CALL location_message( 'finished time-stepping', .TRUE. )
[1384]	1197
[1]	1198	END SUBROUTINE time_integration

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