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source: palm/trunk/SOURCE/time_integration.f90 @ 1267

Last change on this file since 1267 was 1258, checked in by raasch, 11 years ago
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[1]	1	SUBROUTINE time_integration
	2
[1036]	3	!--------------------------------------------------------------------------------!
	4	! This file is part of PALM.
	5	!
	6	! PALM is free software: you can redistribute it and/or modify it under the terms
	7	! of the GNU General Public License as published by the Free Software Foundation,
	8	! either version 3 of the License, or (at your option) any later version.
	9	!
	10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
	11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
	12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
	13	!
	14	! You should have received a copy of the GNU General Public License along with
	15	! PALM. If not, see <http://www.gnu.org/licenses/>.
	16	!
	17	! Copyright 1997-2012 Leibniz University Hannover
	18	!--------------------------------------------------------------------------------!
	19	!
[484]	20	! Current revisions:
[1092]	21	! ------------------
[1132]	22	!
[1258]	23	!
[1132]	24	! Former revisions:
	25	! -----------------
	26	! $Id: time_integration.f90 1258 2013-11-08 16:09:09Z heinze $
	27	!
[1258]	28	! 1257 2013-11-08 15:18:40Z raasch
	29	! acc-update-host directive for timestep removed
	30	!
[1242]	31	! 1241 2013-10-30 11:36:58Z heinze
	32	! Generalize calc_mean_profile for wider use
	33	! Determine shf and qsws in dependence on data from LSF_DATA
	34	! Determine ug and vg in dependence on data from LSF_DATA
[1222]	35	! 1221 2013-09-10 08:59:13Z raasch
	36	! host update of arrays before timestep is called
	37	!
[1182]	38	! 1179 2013-06-14 05:57:58Z raasch
	39	! mean profiles for reference state are only calculated if required,
	40	! small bugfix for background communication
	41	!
[1172]	42	! 1171 2013-05-30 11:27:45Z raasch
	43	! split of prognostic_equations deactivated (comment lines), for the time being
	44	!
[1132]	45	! 1128 2013-04-12 06:19:32Z raasch
[1128]	46	! asynchronous transfer of ghost point data realized for acc-optimized version:
	47	! prognostic_equations are first called two times for those points required for
	48	! the left-right and north-south exchange, respectively, and then for the
	49	! remaining points,
	50	! those parts requiring global communication moved from prognostic_equations to
	51	! here
[392]	52	!
[1116]	53	! 1115 2013-03-26 18:16:16Z hoffmann
	54	! calculation of qr and nr is restricted to precipitation
	55	!
[1114]	56	! 1113 2013-03-10 02:48:14Z raasch
	57	! GPU-porting of boundary conditions,
	58	! openACC directives updated
	59	! formal parameter removed from routine boundary_conds
	60	!
[1112]	61	! 1111 2013-03-08 23:54:10Z raasch
	62	! +internal timestep counter for cpu statistics added,
	63	! openACC directives updated
	64	!
[1093]	65	! 1092 2013-02-02 11:24:22Z raasch
	66	! unused variables removed
	67	!
[1066]	68	! 1065 2012-11-22 17:42:36Z hoffmann
	69	! exchange of diss (dissipation rate) in case of turbulence = .TRUE. added
	70	!
[1054]	71	! 1053 2012-11-13 17:11:03Z hoffmann
	72	! exchange of ghost points for nr, qr added
	73	!
[1037]	74	! 1036 2012-10-22 13:43:42Z raasch
	75	! code put under GPL (PALM 3.9)
	76	!
[1020]	77	! 1019 2012-09-28 06:46:45Z raasch
	78	! non-optimized version of prognostic_equations removed
	79	!
[1017]	80	! 1015 2012-09-27 09:23:24Z raasch
	81	! +call of prognostic_equations_acc
	82	!
[1002]	83	! 1001 2012-09-13 14:08:46Z raasch
	84	! all actions concerning leapfrog- and upstream-spline-scheme removed
	85	!
[850]	86	! 849 2012-03-15 10:35:09Z raasch
	87	! advec_particles renamed lpm, first_call_advec_particles renamed first_call_lpm
	88	!
[826]	89	! 825 2012-02-19 03:03:44Z raasch
	90	! wang_collision_kernel renamed wang_kernel
	91	!
[791]	92	! 790 2011-11-29 03:11:20Z raasch
	93	! exchange of ghostpoints for array diss
	94	!
[708]	95	! 707 2011-03-29 11:39:40Z raasch
	96	! bc_lr/ns replaced by bc_lr/ns_cyc, calls of exchange_horiz are modified,
	97	! adaption to sloping surface
	98	!
[668]	99	! 667 2010-12-23 12:06:00Z suehring/gryschka
	100	! Calls of exchange_horiz are modified.
	101	! Adaption to slooping surface.
	102	!
[482]	103	! 449 2010-02-02 11:23:59Z raasch
	104	! Bugfix: exchange of ghost points for prho included
	105	!
[449]	106	! 410 2009-12-04 17:05:40Z letzel
	107	! masked data output
	108	!
[392]	109	! 388 2009-09-23 09:40:33Z raasch
[388]	110	! Using prho instead of rho in diffusvities.
[291]	111	! Coupling with independent precursor runs.
	112	! Bugfix: output of particle time series only if particle advection is switched
[253]	113	! on
[110]	114	!
[198]	115	! 151 2008-03-07 13:42:18Z raasch
	116	! inflow turbulence is imposed by calling new routine inflow_turbulence
	117	!
[110]	118	! 108 2007-08-24 15:10:38Z letzel
[106]	119	! Call of new routine surface_coupler,
	120	! presure solver is called after the first Runge-Kutta substep instead of the
	121	! last in case that call_psolver_at_all_substeps = .F.; for this case, the
	122	! random perturbation has to be added to the velocity fields also after the
	123	! first substep
[77]	124	!
[98]	125	! 97 2007-06-21 08:23:15Z raasch
	126	! diffusivities is called with argument rho in case of ocean runs,
	127	! new argument pt_/prho_reference in calls of diffusivities,
	128	! ghostpoint exchange for salinity and density
	129	!
[90]	130	! 87 2007-05-22 15:46:47Z raasch
	131	! var_hom renamed pr_palm
	132	!
[77]	133	! 75 2007-03-22 09:54:05Z raasch
[46]	134	! Move call of user_actions( 'after_integration' ) below increment of times
[63]	135	! and counters,
	136	! calls of prognostic_equations_.. changed to .._noopt, .._cache, and
[75]	137	! .._vector, these calls are now controlled by switch loop_optimization,
	138	! uxrp, vynp eliminated, 2nd+3rd argument removed from exchange horiz,
	139	! moisture renamed humidity
[1]	140	!
[3]	141	! RCS Log replace by Id keyword, revision history cleaned up
	142	!
[1]	143	! Revision 1.8 2006/08/22 14:16:05 raasch
	144	! Disturbances are imposed only for the last Runge-Kutta-substep
	145	!
	146	! Revision 1.2 2004/04/30 13:03:40 raasch
	147	! decalpha-specific warning removed, routine name changed to time_integration,
	148	! particle advection is carried out only once during the intermediate steps,
	149	! impulse_advec renamed momentum_advec
	150	!
	151	! Revision 1.1 1997/08/11 06:19:04 raasch
	152	! Initial revision
	153	!
	154	!
	155	! Description:
	156	! ------------
	157	! Integration in time of the model equations, statistical analysis and graphic
	158	! output
	159	!------------------------------------------------------------------------------!
	160
[1128]	161	USE advec_ws
[1]	162	USE arrays_3d
	163	USE averaging
[1128]	164	USE buoyancy_mod
[1]	165	USE control_parameters
	166	USE cpulog
	167	#if defined( __dvrp_graphics )
	168	USE DVRP
	169	#endif
	170	USE grid_variables
	171	USE indices
	172	USE interaction_droplets_ptq_mod
	173	USE interfaces
[1241]	174	USE ls_forcing_mod
[1]	175	USE particle_attributes
	176	USE pegrid
[1128]	177	USE production_e_mod
[1]	178	USE prognostic_equations_mod
	179	USE statistics
	180	USE user_actions_mod
	181
	182	IMPLICIT NONE
	183
	184	CHARACTER (LEN=9) :: time_to_string
	185
	186	!
	187	!-- At the beginning of a simulation determine the time step as well as
	188	!-- determine and print out the run control parameters
	189	IF ( simulated_time == 0.0 ) CALL timestep
[667]	190
[1]	191	CALL run_control
	192
[667]	193
[108]	194	!
	195	!-- Data exchange between coupled models in case that a call has been omitted
	196	!-- at the end of the previous run of a job chain.
[291]	197	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[108]	198	!
	199	!-- In case of model termination initiated by the local model the coupler
	200	!-- must not be called because this would again cause an MPI hang.
	201	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
	202	CALL surface_coupler
	203	time_coupling = time_coupling - dt_coupling
	204	ENDDO
[348]	205	IF (time_coupling == 0.0 .AND. time_since_reference_point < dt_coupling)&
	206	THEN
	207	time_coupling = time_since_reference_point
	208	ENDIF
[108]	209	ENDIF
	210
	211
[1]	212	#if defined( __dvrp_graphics )
	213	!
	214	!-- Time measurement with dvrp software
	215	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	216	#endif
	217
	218	!
	219	!-- Start of the time loop
	220	DO WHILE ( simulated_time < end_time .AND. .NOT. stop_dt .AND. &
	221	.NOT. terminate_run )
	222
	223	CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
[1221]	224
[1]	225	!
	226	!-- Determine size of next time step
[1221]	227	IF ( simulated_time /= 0.0 ) THEN
	228	CALL timestep
	229	ENDIF
	230
[1]	231	!
[1241]	232	!-- Determine ug, vg and w_subs in dependence on data from external file
	233	!-- LSF_DATA
	234	IF ( large_scale_forcing .AND. lsf_vert ) THEN
	235	CALL ls_forcing_vert ( simulated_time )
	236	ENDIF
	237
	238	!
[1]	239	!-- Execute the user-defined actions
	240	CALL user_actions( 'before_timestep' )
	241
	242	!
	243	!-- Start of intermediate step loop
	244	intermediate_timestep_count = 0
	245	DO WHILE ( intermediate_timestep_count < &
	246	intermediate_timestep_count_max )
	247
	248	intermediate_timestep_count = intermediate_timestep_count + 1
	249
	250	!
	251	!-- Set the steering factors for the prognostic equations which depend
	252	!-- on the timestep scheme
	253	CALL timestep_scheme_steering
	254
	255	!
[1128]	256	!-- Calculate those variables needed in the tendency terms which need
	257	!-- global communication
[1179]	258	IF ( .NOT. use_single_reference_value .AND. &
	259	.NOT. use_initial_profile_as_reference ) THEN
	260	!
	261	!-- Horizontally averaged profiles to be used as reference state in
	262	!-- buoyancy terms (WARNING: only the respective last call of
	263	!-- calc_mean_profile defines the reference state!)
[1241]	264	IF ( .NOT. neutral ) CALL calc_mean_profile( pt, 4, 'time_int' )
	265	IF ( ocean ) CALL calc_mean_profile( rho, 64, 'time_int' )
	266	IF ( humidity ) CALL calc_mean_profile( vpt, 44, 'time_int' )
[1179]	267	ENDIF
	268
[1128]	269	IF ( .NOT. constant_diffusion ) CALL production_e_init
	270	IF ( ( ws_scheme_mom .OR. ws_scheme_sca ) .AND. &
	271	intermediate_timestep_count == 1 ) CALL ws_statistics
	272
	273	!
[1]	274	!-- Solve the prognostic equations. A fast cache optimized version with
	275	!-- only one single loop is used in case of Piascek-Williams advection
	276	!-- scheme. NEC vector machines use a different version, because
	277	!-- in the other versions a good vectorization is prohibited due to
	278	!-- inlining problems.
[1019]	279	IF ( loop_optimization == 'cache' ) THEN
	280	CALL prognostic_equations_cache
	281	ELSEIF ( loop_optimization == 'vector' ) THEN
[63]	282	CALL prognostic_equations_vector
[1015]	283	ELSEIF ( loop_optimization == 'acc' ) THEN
[1171]	284	i_left = nxl; i_right = nxr
	285	j_south = nys; j_north = nyn
	286	CALL prognostic_equations_acc
	287
	288	! i_left = nxl; i_right = nxl+nbgp-1
[1128]	289	! j_south = nys; j_north = nyn
	290	! CALL prognostic_equations_acc
[1171]	291	! i_left = nxr-nbgp+1; i_right = nxr
	292	! j_south = nys; j_north = nyn
	293	! CALL prognostic_equations_acc
[1128]	294
	295	!
	296	!-- Exchange of ghost points (lateral boundary conditions)
	297	IF ( background_communication ) THEN
	298
	299	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
	300
	301	send_receive = 'lr'
	302	sendrecv_in_background = .TRUE.
	303	req = 0
	304	req_count = 0
	305
	306	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	307	on_device = .TRUE. ! to be removed after complete porting
	308	ELSE ! of ghost point exchange
	309	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	310	ENDIF
	311
	312	CALL exchange_horiz( u_p, nbgp )
	313	CALL exchange_horiz( v_p, nbgp )
	314	CALL exchange_horiz( w_p, nbgp )
	315	CALL exchange_horiz( pt_p, nbgp )
	316	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	317	IF ( ocean ) THEN
	318	CALL exchange_horiz( sa_p, nbgp )
	319	CALL exchange_horiz( rho, nbgp )
	320	CALL exchange_horiz( prho, nbgp )
	321	ENDIF
	322	IF (humidity .OR. passive_scalar) THEN
	323	CALL exchange_horiz( q_p, nbgp )
	324	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
	325	CALL exchange_horiz( qr_p, nbgp )
	326	CALL exchange_horiz( nr_p, nbgp )
	327	ENDIF
	328	ENDIF
	329	IF ( cloud_droplets ) THEN
	330	CALL exchange_horiz( ql, nbgp )
	331	CALL exchange_horiz( ql_c, nbgp )
	332	CALL exchange_horiz( ql_v, nbgp )
	333	CALL exchange_horiz( ql_vp, nbgp )
	334	ENDIF
	335	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	336
	337	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	338	on_device = .FALSE. ! to be removed after complete porting
	339	ELSE ! of ghost point exchange
	340	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	341	ENDIF
	342
	343	sendrecv_in_background = .FALSE.
	344
	345	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'pause' )
	346
	347	ENDIF
	348
[1171]	349	! i_left = nxl+nbgp; i_right = nxr-nbgp
	350	! j_south = nys; j_north = nys+nbgp-1
	351	! CALL prognostic_equations_acc
	352	! i_left = nxl+nbgp; i_right = nxr-nbgp
	353	! j_south = nyn-nbgp+1; j_north = nyn
	354	! CALL prognostic_equations_acc
[1128]	355
	356	IF ( background_communication ) THEN
	357	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'start' )
	358	#if defined( __parallel )
	359	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	360	#endif
	361	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'pause' )
	362
	363	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'continue' )
	364
	365	send_receive = 'ns'
	366	sendrecv_in_background = .TRUE.
	367	req = 0
	368	req_count = 0
	369
	370	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	371	on_device = .TRUE. ! to be removed after complete porting
	372	ELSE ! of ghost point exchange
	373	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	374	ENDIF
	375
	376	CALL exchange_horiz( u_p, nbgp )
	377	CALL exchange_horiz( v_p, nbgp )
	378	CALL exchange_horiz( w_p, nbgp )
	379	CALL exchange_horiz( pt_p, nbgp )
	380	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	381	IF ( ocean ) THEN
	382	CALL exchange_horiz( sa_p, nbgp )
	383	CALL exchange_horiz( rho, nbgp )
	384	CALL exchange_horiz( prho, nbgp )
	385	ENDIF
	386	IF (humidity .OR. passive_scalar) THEN
	387	CALL exchange_horiz( q_p, nbgp )
	388	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
	389	CALL exchange_horiz( qr_p, nbgp )
	390	CALL exchange_horiz( nr_p, nbgp )
	391	ENDIF
	392	ENDIF
	393	IF ( cloud_droplets ) THEN
	394	CALL exchange_horiz( ql, nbgp )
	395	CALL exchange_horiz( ql_c, nbgp )
	396	CALL exchange_horiz( ql_v, nbgp )
	397	CALL exchange_horiz( ql_vp, nbgp )
	398	ENDIF
	399	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	400
	401	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	402	on_device = .FALSE. ! to be removed after complete porting
	403	ELSE ! of ghost point exchange
	404	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	405	ENDIF
	406
	407	sendrecv_in_background = .FALSE.
	408
	409	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	410
	411	ENDIF
	412
[1171]	413	! i_left = nxl+nbgp; i_right = nxr-nbgp
	414	! j_south = nys+nbgp; j_north = nyn-nbgp
	415	! CALL prognostic_equations_acc
[1128]	416
	417	IF ( background_communication ) THEN
	418	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'continue' )
	419	#if defined( __parallel )
	420	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	421	#endif
	422	send_receive = 'al'
	423	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'stop' )
	424	ENDIF
	425
[1]	426	ENDIF
	427
	428	!
[849]	429	!-- Particle transport/physics with the Lagrangian particle model
	430	!-- (only once during intermediate steps, because it uses an Euler-step)
[1128]	431	!-- ### particle model should be moved before prognostic_equations, in order
	432	!-- to regard droplet interactions directly
[63]	433	IF ( particle_advection .AND. &
	434	simulated_time >= particle_advection_start .AND. &
[1]	435	intermediate_timestep_count == 1 ) THEN
[849]	436	CALL lpm
	437	first_call_lpm = .FALSE.
[1]	438	ENDIF
	439
	440	!
	441	!-- Interaction of droplets with temperature and specific humidity.
	442	!-- Droplet condensation and evaporation is calculated within
	443	!-- advec_particles.
	444	IF ( cloud_droplets .AND. &
	445	intermediate_timestep_count == intermediate_timestep_count_max )&
	446	THEN
	447	CALL interaction_droplets_ptq
	448	ENDIF
	449
	450	!
	451	!-- Exchange of ghost points (lateral boundary conditions)
[1128]	452	IF ( .NOT. background_communication ) THEN
[1113]	453
[1128]	454	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
[1113]	455
[1128]	456	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	457	on_device = .TRUE. ! to be removed after complete porting
	458	ELSE ! of ghost point exchange
	459	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
[1053]	460	ENDIF
[1]	461
[1128]	462	CALL exchange_horiz( u_p, nbgp )
	463	CALL exchange_horiz( v_p, nbgp )
	464	CALL exchange_horiz( w_p, nbgp )
	465	CALL exchange_horiz( pt_p, nbgp )
	466	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	467	IF ( ocean ) THEN
	468	CALL exchange_horiz( sa_p, nbgp )
	469	CALL exchange_horiz( rho, nbgp )
	470	CALL exchange_horiz( prho, nbgp )
	471	ENDIF
	472	IF (humidity .OR. passive_scalar) THEN
	473	CALL exchange_horiz( q_p, nbgp )
[1179]	474	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
	475	precipitation ) THEN
[1128]	476	CALL exchange_horiz( qr_p, nbgp )
	477	CALL exchange_horiz( nr_p, nbgp )
	478	ENDIF
	479	ENDIF
	480	IF ( cloud_droplets ) THEN
	481	CALL exchange_horiz( ql, nbgp )
	482	CALL exchange_horiz( ql_c, nbgp )
	483	CALL exchange_horiz( ql_v, nbgp )
	484	CALL exchange_horiz( ql_vp, nbgp )
	485	ENDIF
	486	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	487
	488	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	489	on_device = .FALSE. ! to be removed after complete porting
	490	ELSE ! of ghost point exchange
	491	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	492	ENDIF
	493
	494	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	495
[1113]	496	ENDIF
	497
[1]	498	!
	499	!-- Boundary conditions for the prognostic quantities (except of the
	500	!-- velocities at the outflow in case of a non-cyclic lateral wall)
[1113]	501	CALL boundary_conds
[1]	502
	503	!
[73]	504	!-- Swap the time levels in preparation for the next time step.
	505	CALL swap_timelevel
	506
	507	!
[1]	508	!-- Temperature offset must be imposed at cyclic boundaries in x-direction
	509	!-- when a sloping surface is used
	510	IF ( sloping_surface ) THEN
[707]	511	IF ( nxl == 0 ) pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - &
	512	pt_slope_offset
	513	IF ( nxr == nx ) pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + &
	514	pt_slope_offset
[1]	515	ENDIF
	516
	517	!
[151]	518	!-- Impose a turbulent inflow using the recycling method
	519	IF ( turbulent_inflow ) CALL inflow_turbulence
	520
	521	!
[1]	522	!-- Impose a random perturbation on the horizontal velocity field
[106]	523	IF ( create_disturbances .AND. &
	524	( call_psolver_at_all_substeps .AND. &
[1]	525	intermediate_timestep_count == intermediate_timestep_count_max )&
[106]	526	.OR. ( .NOT. call_psolver_at_all_substeps .AND. &
	527	intermediate_timestep_count == 1 ) ) &
[1]	528	THEN
	529	time_disturb = time_disturb + dt_3d
	530	IF ( time_disturb >= dt_disturb ) THEN
[1111]	531	!$acc update host( u, v )
[1113]	532	IF ( numprocs == 1 ) on_device = .FALSE. ! workaround, remove later
[87]	533	IF ( hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit ) THEN
[75]	534	CALL disturb_field( nzb_u_inner, tend, u )
	535	CALL disturb_field( nzb_v_inner, tend, v )
[707]	536	ELSEIF ( .NOT. bc_lr_cyc .OR. .NOT. bc_ns_cyc ) THEN
[1]	537	!
	538	!-- Runs with a non-cyclic lateral wall need perturbations
	539	!-- near the inflow throughout the whole simulation
	540	dist_range = 1
[75]	541	CALL disturb_field( nzb_u_inner, tend, u )
	542	CALL disturb_field( nzb_v_inner, tend, v )
[1]	543	dist_range = 0
	544	ENDIF
[1113]	545	IF ( numprocs == 1 ) on_device = .TRUE. ! workaround, remove later
[1111]	546	!$acc update device( u, v )
[1]	547	time_disturb = time_disturb - dt_disturb
	548	ENDIF
	549	ENDIF
	550
	551	!
	552	!-- Reduce the velocity divergence via the equation for perturbation
	553	!-- pressure.
[106]	554	IF ( intermediate_timestep_count == 1 .OR. &
	555	call_psolver_at_all_substeps ) THEN
[1]	556	CALL pres
	557	ENDIF
	558
	559	!
	560	!-- If required, compute liquid water content
[1015]	561	IF ( cloud_physics ) THEN
	562	CALL calc_liquid_water_content
	563	!$acc update device( ql )
	564	ENDIF
[1115]	565	!
	566	!-- If required, compute virtual potential temperature
	567	IF ( humidity ) THEN
	568	CALL compute_vpt
	569	!$acc update device( vpt )
	570	ENDIF
[1]	571	!
	572	!-- Compute the diffusion quantities
	573	IF ( .NOT. constant_diffusion ) THEN
	574
	575	!
	576	!-- First the vertical fluxes in the Prandtl layer are being computed
	577	IF ( prandtl_layer ) THEN
	578	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'start' )
	579	CALL prandtl_fluxes
	580	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'stop' )
	581	ENDIF
[1241]	582
[1]	583	!
[1241]	584	!-- Determine shf and qsws in dependence on data from external file
	585	!-- LSF_DATA
	586	IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
	587	intermediate_timestep_count == intermediate_timestep_count_max )&
	588	THEN
	589	CALL ls_forcing_surf ( simulated_time )
	590	ENDIF
	591
	592	!
[1]	593	!-- Compute the diffusion coefficients
	594	CALL cpu_log( log_point(17), 'diffusivities', 'start' )
[75]	595	IF ( .NOT. humidity ) THEN
[97]	596	IF ( ocean ) THEN
[388]	597	CALL diffusivities( prho, prho_reference )
[97]	598	ELSE
	599	CALL diffusivities( pt, pt_reference )
	600	ENDIF
[1]	601	ELSE
[97]	602	CALL diffusivities( vpt, pt_reference )
[1]	603	ENDIF
	604	CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
	605
	606	ENDIF
	607
	608	ENDDO ! Intermediate step loop
	609
	610	!
	611	!-- Increase simulation time and output times
[1111]	612	nr_timesteps_this_run = nr_timesteps_this_run + 1
[291]	613	current_timestep_number = current_timestep_number + 1
	614	simulated_time = simulated_time + dt_3d
	615	simulated_time_chr = time_to_string( simulated_time )
	616	time_since_reference_point = simulated_time - coupling_start_time
	617
[1]	618	IF ( simulated_time >= skip_time_data_output_av ) THEN
	619	time_do_av = time_do_av + dt_3d
	620	ENDIF
	621	IF ( simulated_time >= skip_time_do2d_xy ) THEN
	622	time_do2d_xy = time_do2d_xy + dt_3d
	623	ENDIF
	624	IF ( simulated_time >= skip_time_do2d_xz ) THEN
	625	time_do2d_xz = time_do2d_xz + dt_3d
	626	ENDIF
	627	IF ( simulated_time >= skip_time_do2d_yz ) THEN
	628	time_do2d_yz = time_do2d_yz + dt_3d
	629	ENDIF
	630	IF ( simulated_time >= skip_time_do3d ) THEN
	631	time_do3d = time_do3d + dt_3d
	632	ENDIF
[410]	633	DO mid = 1, masks
	634	IF ( simulated_time >= skip_time_domask(mid) ) THEN
	635	time_domask(mid)= time_domask(mid) + dt_3d
	636	ENDIF
	637	ENDDO
[1]	638	time_dvrp = time_dvrp + dt_3d
	639	IF ( simulated_time >= skip_time_dosp ) THEN
	640	time_dosp = time_dosp + dt_3d
	641	ENDIF
	642	time_dots = time_dots + dt_3d
[849]	643	IF ( .NOT. first_call_lpm ) THEN
[1]	644	time_dopts = time_dopts + dt_3d
	645	ENDIF
	646	IF ( simulated_time >= skip_time_dopr ) THEN
	647	time_dopr = time_dopr + dt_3d
	648	ENDIF
	649	time_dopr_listing = time_dopr_listing + dt_3d
	650	time_run_control = time_run_control + dt_3d
	651
	652	!
[102]	653	!-- Data exchange between coupled models
[291]	654	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[102]	655	time_coupling = time_coupling + dt_3d
[343]	656
[108]	657	!
	658	!-- In case of model termination initiated by the local model
	659	!-- (terminate_coupled > 0), the coupler must be skipped because it would
	660	!-- cause an MPI intercomminucation hang.
	661	!-- If necessary, the coupler will be called at the beginning of the
	662	!-- next restart run.
	663	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
[102]	664	CALL surface_coupler
	665	time_coupling = time_coupling - dt_coupling
	666	ENDDO
	667	ENDIF
	668
	669	!
[46]	670	!-- Execute user-defined actions
	671	CALL user_actions( 'after_integration' )
	672
	673	!
[1]	674	!-- If Galilei transformation is used, determine the distance that the
	675	!-- model has moved so far
	676	IF ( galilei_transformation ) THEN
	677	advected_distance_x = advected_distance_x + u_gtrans * dt_3d
	678	advected_distance_y = advected_distance_y + v_gtrans * dt_3d
	679	ENDIF
	680
	681	!
	682	!-- Check, if restart is necessary (because cpu-time is expiring or
	683	!-- because it is forced by user) and set stop flag
[108]	684	!-- This call is skipped if the remote model has already initiated a restart.
	685	IF ( .NOT. terminate_run ) CALL check_for_restart
[1]	686
	687	!
	688	!-- Carry out statistical analysis and output at the requested output times.
	689	!-- The MOD function is used for calculating the output time counters (like
	690	!-- time_dopr) in order to regard a possible decrease of the output time
	691	!-- interval in case of restart runs
	692
	693	!
	694	!-- Set a flag indicating that so far no statistics have been created
	695	!-- for this time step
	696	flow_statistics_called = .FALSE.
	697
	698	!
	699	!-- If required, call flow_statistics for averaging in time
	700	IF ( averaging_interval_pr /= 0.0 .AND. &
	701	( dt_dopr - time_dopr ) <= averaging_interval_pr .AND. &
	702	simulated_time >= skip_time_dopr ) THEN
	703	time_dopr_av = time_dopr_av + dt_3d
	704	IF ( time_dopr_av >= dt_averaging_input_pr ) THEN
	705	do_sum = .TRUE.
	706	time_dopr_av = MOD( time_dopr_av, &
	707	MAX( dt_averaging_input_pr, dt_3d ) )
	708	ENDIF
	709	ENDIF
	710	IF ( do_sum ) CALL flow_statistics
	711
	712	!
[410]	713	!-- Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
[1]	714	IF ( averaging_interval /= 0.0 .AND. &
	715	( dt_data_output_av - time_do_av ) <= averaging_interval .AND. &
	716	simulated_time >= skip_time_data_output_av ) &
	717	THEN
	718	time_do_sla = time_do_sla + dt_3d
	719	IF ( time_do_sla >= dt_averaging_input ) THEN
	720	CALL sum_up_3d_data
	721	average_count_3d = average_count_3d + 1
	722	time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
	723	ENDIF
	724	ENDIF
	725
	726	!
	727	!-- Calculate spectra for time averaging
	728	IF ( averaging_interval_sp /= 0.0 .AND. &
	729	( dt_dosp - time_dosp ) <= averaging_interval_sp .AND. &
	730	simulated_time >= skip_time_dosp ) THEN
	731	time_dosp_av = time_dosp_av + dt_3d
	732	IF ( time_dosp_av >= dt_averaging_input_pr ) THEN
	733	CALL calc_spectra
	734	time_dosp_av = MOD( time_dosp_av, &
	735	MAX( dt_averaging_input_pr, dt_3d ) )
	736	ENDIF
	737	ENDIF
	738
	739	!
	740	!-- Computation and output of run control parameters.
[1001]	741	!-- This is also done whenever perturbations have been imposed
[1]	742	IF ( time_run_control >= dt_run_control .OR. &
[1001]	743	timestep_scheme(1:5) /= 'runge' .OR. disturbance_created ) &
[1]	744	THEN
	745	CALL run_control
	746	IF ( time_run_control >= dt_run_control ) THEN
	747	time_run_control = MOD( time_run_control, &
	748	MAX( dt_run_control, dt_3d ) )
	749	ENDIF
	750	ENDIF
	751
	752	!
	753	!-- Profile output (ASCII) on file
	754	IF ( time_dopr_listing >= dt_dopr_listing ) THEN
	755	CALL print_1d
	756	time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, &
	757	dt_3d ) )
	758	ENDIF
	759
	760	!
	761	!-- Graphic output for PROFIL
	762	IF ( time_dopr >= dt_dopr ) THEN
	763	IF ( dopr_n /= 0 ) CALL data_output_profiles
	764	time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
	765	time_dopr_av = 0.0 ! due to averaging (see above)
	766	ENDIF
	767
	768	!
	769	!-- Graphic output for time series
	770	IF ( time_dots >= dt_dots ) THEN
[48]	771	CALL data_output_tseries
[1]	772	time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
	773	ENDIF
	774
	775	!
	776	!-- Output of spectra (formatted for use with PROFIL), in case of no
	777	!-- time averaging, spectra has to be calculated before
	778	IF ( time_dosp >= dt_dosp ) THEN
	779	IF ( average_count_sp == 0 ) CALL calc_spectra
	780	CALL data_output_spectra
	781	time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
	782	ENDIF
	783
	784	!
	785	!-- 2d-data output (cross-sections)
	786	IF ( time_do2d_xy >= dt_do2d_xy ) THEN
	787	CALL data_output_2d( 'xy', 0 )
	788	time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
	789	ENDIF
	790	IF ( time_do2d_xz >= dt_do2d_xz ) THEN
	791	CALL data_output_2d( 'xz', 0 )
	792	time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
	793	ENDIF
	794	IF ( time_do2d_yz >= dt_do2d_yz ) THEN
	795	CALL data_output_2d( 'yz', 0 )
	796	time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
	797	ENDIF
	798
	799	!
	800	!-- 3d-data output (volume data)
	801	IF ( time_do3d >= dt_do3d ) THEN
	802	CALL data_output_3d( 0 )
	803	time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
	804	ENDIF
	805
	806	!
[410]	807	!-- masked data output
	808	DO mid = 1, masks
	809	IF ( time_domask(mid) >= dt_domask(mid) ) THEN
	810	CALL data_output_mask( 0 )
	811	time_domask(mid) = MOD( time_domask(mid), &
	812	MAX( dt_domask(mid), dt_3d ) )
	813	ENDIF
	814	ENDDO
	815
	816	!
	817	!-- Output of time-averaged 2d/3d/masked data
[1]	818	IF ( time_do_av >= dt_data_output_av ) THEN
	819	CALL average_3d_data
	820	CALL data_output_2d( 'xy', 1 )
	821	CALL data_output_2d( 'xz', 1 )
	822	CALL data_output_2d( 'yz', 1 )
	823	CALL data_output_3d( 1 )
[410]	824	DO mid = 1, masks
	825	CALL data_output_mask( 1 )
	826	ENDDO
[1]	827	time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
	828	ENDIF
	829
	830	!
	831	!-- Output of particle time series
[253]	832	IF ( particle_advection ) THEN
	833	IF ( time_dopts >= dt_dopts .OR. &
	834	( simulated_time >= particle_advection_start .AND. &
[849]	835	first_call_lpm ) ) THEN
[253]	836	CALL data_output_ptseries
	837	time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
	838	ENDIF
[1]	839	ENDIF
	840
	841	!
	842	!-- Output of dvrp-graphics (isosurface, particles, slicer)
	843	#if defined( __dvrp_graphics )
	844	CALL DVRP_LOG_EVENT( -2, current_timestep_number-1 )
	845	#endif
	846	IF ( time_dvrp >= dt_dvrp ) THEN
	847	CALL data_output_dvrp
	848	time_dvrp = MOD( time_dvrp, MAX( dt_dvrp, dt_3d ) )
	849	ENDIF
	850	#if defined( __dvrp_graphics )
	851	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	852	#endif
	853
	854	!
	855	!-- If required, set the heat flux for the next time step at a random value
	856	IF ( constant_heatflux .AND. random_heatflux ) CALL disturb_heatflux
	857
	858	!
	859	!-- Execute user-defined actions
	860	CALL user_actions( 'after_timestep' )
	861
	862	CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
	863
[667]	864
[1]	865	ENDDO ! time loop
	866
	867	#if defined( __dvrp_graphics )
	868	CALL DVRP_LOG_EVENT( -2, current_timestep_number )
	869	#endif
	870
	871	END SUBROUTINE time_integration

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