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source: palm/trunk/SOURCE/time_integration.f90 @ 1319

Last change on this file since 1319 was 1319, checked in by raasch, 10 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	!
[1310]	17	! Copyright 1997-2014 Leibniz Universitaet Hannover
[1036]	18	!--------------------------------------------------------------------------------!
	19	!
[484]	20	! Current revisions:
[1092]	21	! ------------------
[1132]	22	!
[1319]	23	!
[1132]	24	! Former revisions:
	25	! -----------------
	26	! $Id: time_integration.f90 1319 2014-03-17 15:08:44Z raasch $
	27	!
[1319]	28	! 1318 2014-03-17 13:35:16Z raasch
	29	! module interfaces removed
	30	!
[1309]	31	! 1308 2014-03-13 14:58:42Z fricke
	32	! +netcdf_data_format_save
	33	! For masked data, parallel netcdf output is not tested so far, hence
	34	! netcdf_data_format is switched back to non-paralell output.
	35	!
[1277]	36	! 1276 2014-01-15 13:40:41Z heinze
	37	! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars
	38	!
[1258]	39	! 1257 2013-11-08 15:18:40Z raasch
	40	! acc-update-host directive for timestep removed
	41	!
[1242]	42	! 1241 2013-10-30 11:36:58Z heinze
	43	! Generalize calc_mean_profile for wider use
	44	! Determine shf and qsws in dependence on data from LSF_DATA
	45	! Determine ug and vg in dependence on data from LSF_DATA
[1222]	46	! 1221 2013-09-10 08:59:13Z raasch
	47	! host update of arrays before timestep is called
	48	!
[1182]	49	! 1179 2013-06-14 05:57:58Z raasch
	50	! mean profiles for reference state are only calculated if required,
	51	! small bugfix for background communication
	52	!
[1172]	53	! 1171 2013-05-30 11:27:45Z raasch
	54	! split of prognostic_equations deactivated (comment lines), for the time being
	55	!
[1132]	56	! 1128 2013-04-12 06:19:32Z raasch
[1128]	57	! asynchronous transfer of ghost point data realized for acc-optimized version:
	58	! prognostic_equations are first called two times for those points required for
	59	! the left-right and north-south exchange, respectively, and then for the
	60	! remaining points,
	61	! those parts requiring global communication moved from prognostic_equations to
	62	! here
[392]	63	!
[1116]	64	! 1115 2013-03-26 18:16:16Z hoffmann
	65	! calculation of qr and nr is restricted to precipitation
	66	!
[1114]	67	! 1113 2013-03-10 02:48:14Z raasch
	68	! GPU-porting of boundary conditions,
	69	! openACC directives updated
	70	! formal parameter removed from routine boundary_conds
	71	!
[1112]	72	! 1111 2013-03-08 23:54:10Z raasch
	73	! +internal timestep counter for cpu statistics added,
	74	! openACC directives updated
	75	!
[1093]	76	! 1092 2013-02-02 11:24:22Z raasch
	77	! unused variables removed
	78	!
[1066]	79	! 1065 2012-11-22 17:42:36Z hoffmann
	80	! exchange of diss (dissipation rate) in case of turbulence = .TRUE. added
	81	!
[1054]	82	! 1053 2012-11-13 17:11:03Z hoffmann
	83	! exchange of ghost points for nr, qr added
	84	!
[1037]	85	! 1036 2012-10-22 13:43:42Z raasch
	86	! code put under GPL (PALM 3.9)
	87	!
[1020]	88	! 1019 2012-09-28 06:46:45Z raasch
	89	! non-optimized version of prognostic_equations removed
	90	!
[1017]	91	! 1015 2012-09-27 09:23:24Z raasch
	92	! +call of prognostic_equations_acc
	93	!
[1002]	94	! 1001 2012-09-13 14:08:46Z raasch
	95	! all actions concerning leapfrog- and upstream-spline-scheme removed
	96	!
[850]	97	! 849 2012-03-15 10:35:09Z raasch
	98	! advec_particles renamed lpm, first_call_advec_particles renamed first_call_lpm
	99	!
[826]	100	! 825 2012-02-19 03:03:44Z raasch
	101	! wang_collision_kernel renamed wang_kernel
	102	!
[791]	103	! 790 2011-11-29 03:11:20Z raasch
	104	! exchange of ghostpoints for array diss
	105	!
[708]	106	! 707 2011-03-29 11:39:40Z raasch
	107	! bc_lr/ns replaced by bc_lr/ns_cyc, calls of exchange_horiz are modified,
	108	! adaption to sloping surface
	109	!
[668]	110	! 667 2010-12-23 12:06:00Z suehring/gryschka
	111	! Calls of exchange_horiz are modified.
	112	! Adaption to slooping surface.
	113	!
[482]	114	! 449 2010-02-02 11:23:59Z raasch
	115	! Bugfix: exchange of ghost points for prho included
	116	!
[449]	117	! 410 2009-12-04 17:05:40Z letzel
	118	! masked data output
	119	!
[392]	120	! 388 2009-09-23 09:40:33Z raasch
[388]	121	! Using prho instead of rho in diffusvities.
[291]	122	! Coupling with independent precursor runs.
	123	! Bugfix: output of particle time series only if particle advection is switched
[253]	124	! on
[110]	125	!
[198]	126	! 151 2008-03-07 13:42:18Z raasch
	127	! inflow turbulence is imposed by calling new routine inflow_turbulence
	128	!
[110]	129	! 108 2007-08-24 15:10:38Z letzel
[106]	130	! Call of new routine surface_coupler,
	131	! presure solver is called after the first Runge-Kutta substep instead of the
	132	! last in case that call_psolver_at_all_substeps = .F.; for this case, the
	133	! random perturbation has to be added to the velocity fields also after the
	134	! first substep
[77]	135	!
[98]	136	! 97 2007-06-21 08:23:15Z raasch
	137	! diffusivities is called with argument rho in case of ocean runs,
	138	! new argument pt_/prho_reference in calls of diffusivities,
	139	! ghostpoint exchange for salinity and density
	140	!
[90]	141	! 87 2007-05-22 15:46:47Z raasch
	142	! var_hom renamed pr_palm
	143	!
[77]	144	! 75 2007-03-22 09:54:05Z raasch
[46]	145	! Move call of user_actions( 'after_integration' ) below increment of times
[63]	146	! and counters,
	147	! calls of prognostic_equations_.. changed to .._noopt, .._cache, and
[75]	148	! .._vector, these calls are now controlled by switch loop_optimization,
	149	! uxrp, vynp eliminated, 2nd+3rd argument removed from exchange horiz,
	150	! moisture renamed humidity
[1]	151	!
[3]	152	! RCS Log replace by Id keyword, revision history cleaned up
	153	!
[1]	154	! Revision 1.8 2006/08/22 14:16:05 raasch
	155	! Disturbances are imposed only for the last Runge-Kutta-substep
	156	!
	157	! Revision 1.2 2004/04/30 13:03:40 raasch
	158	! decalpha-specific warning removed, routine name changed to time_integration,
	159	! particle advection is carried out only once during the intermediate steps,
	160	! impulse_advec renamed momentum_advec
	161	!
	162	! Revision 1.1 1997/08/11 06:19:04 raasch
	163	! Initial revision
	164	!
	165	!
	166	! Description:
	167	! ------------
	168	! Integration in time of the model equations, statistical analysis and graphic
	169	! output
	170	!------------------------------------------------------------------------------!
	171
[1128]	172	USE advec_ws
[1]	173	USE arrays_3d
	174	USE averaging
[1128]	175	USE buoyancy_mod
[1]	176	USE control_parameters
	177	USE cpulog
	178	#if defined( __dvrp_graphics )
	179	USE DVRP
	180	#endif
	181	USE grid_variables
	182	USE indices
	183	USE interaction_droplets_ptq_mod
[1241]	184	USE ls_forcing_mod
[1]	185	USE particle_attributes
	186	USE pegrid
[1128]	187	USE production_e_mod
[1]	188	USE prognostic_equations_mod
	189	USE statistics
	190	USE user_actions_mod
	191
	192	IMPLICIT NONE
	193
	194	CHARACTER (LEN=9) :: time_to_string
[1308]	195	INTEGER :: netcdf_data_format_save
[1]	196
	197	!
	198	!-- At the beginning of a simulation determine the time step as well as
	199	!-- determine and print out the run control parameters
	200	IF ( simulated_time == 0.0 ) CALL timestep
[667]	201
[1]	202	CALL run_control
	203
[667]	204
[108]	205	!
	206	!-- Data exchange between coupled models in case that a call has been omitted
	207	!-- at the end of the previous run of a job chain.
[291]	208	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[108]	209	!
	210	!-- In case of model termination initiated by the local model the coupler
	211	!-- must not be called because this would again cause an MPI hang.
	212	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
	213	CALL surface_coupler
	214	time_coupling = time_coupling - dt_coupling
	215	ENDDO
[348]	216	IF (time_coupling == 0.0 .AND. time_since_reference_point < dt_coupling)&
	217	THEN
	218	time_coupling = time_since_reference_point
	219	ENDIF
[108]	220	ENDIF
	221
	222
[1]	223	#if defined( __dvrp_graphics )
	224	!
	225	!-- Time measurement with dvrp software
	226	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	227	#endif
	228
	229	!
	230	!-- Start of the time loop
	231	DO WHILE ( simulated_time < end_time .AND. .NOT. stop_dt .AND. &
	232	.NOT. terminate_run )
	233
	234	CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
[1221]	235
[1]	236	!
	237	!-- Determine size of next time step
[1221]	238	IF ( simulated_time /= 0.0 ) THEN
	239	CALL timestep
	240	ENDIF
	241
[1]	242	!
[1241]	243	!-- Determine ug, vg and w_subs in dependence on data from external file
	244	!-- LSF_DATA
	245	IF ( large_scale_forcing .AND. lsf_vert ) THEN
	246	CALL ls_forcing_vert ( simulated_time )
	247	ENDIF
	248
	249	!
[1]	250	!-- Execute the user-defined actions
	251	CALL user_actions( 'before_timestep' )
	252
	253	!
	254	!-- Start of intermediate step loop
	255	intermediate_timestep_count = 0
	256	DO WHILE ( intermediate_timestep_count < &
	257	intermediate_timestep_count_max )
	258
	259	intermediate_timestep_count = intermediate_timestep_count + 1
	260
	261	!
	262	!-- Set the steering factors for the prognostic equations which depend
	263	!-- on the timestep scheme
	264	CALL timestep_scheme_steering
	265
	266	!
[1128]	267	!-- Calculate those variables needed in the tendency terms which need
	268	!-- global communication
[1179]	269	IF ( .NOT. use_single_reference_value .AND. &
	270	.NOT. use_initial_profile_as_reference ) THEN
	271	!
	272	!-- Horizontally averaged profiles to be used as reference state in
	273	!-- buoyancy terms (WARNING: only the respective last call of
	274	!-- calc_mean_profile defines the reference state!)
[1241]	275	IF ( .NOT. neutral ) CALL calc_mean_profile( pt, 4, 'time_int' )
	276	IF ( ocean ) CALL calc_mean_profile( rho, 64, 'time_int' )
	277	IF ( humidity ) CALL calc_mean_profile( vpt, 44, 'time_int' )
[1179]	278	ENDIF
	279
[1128]	280	IF ( .NOT. constant_diffusion ) CALL production_e_init
	281	IF ( ( ws_scheme_mom .OR. ws_scheme_sca ) .AND. &
	282	intermediate_timestep_count == 1 ) CALL ws_statistics
	283
	284	!
[1]	285	!-- Solve the prognostic equations. A fast cache optimized version with
	286	!-- only one single loop is used in case of Piascek-Williams advection
	287	!-- scheme. NEC vector machines use a different version, because
	288	!-- in the other versions a good vectorization is prohibited due to
	289	!-- inlining problems.
[1019]	290	IF ( loop_optimization == 'cache' ) THEN
	291	CALL prognostic_equations_cache
	292	ELSEIF ( loop_optimization == 'vector' ) THEN
[63]	293	CALL prognostic_equations_vector
[1015]	294	ELSEIF ( loop_optimization == 'acc' ) THEN
[1171]	295	i_left = nxl; i_right = nxr
	296	j_south = nys; j_north = nyn
	297	CALL prognostic_equations_acc
	298
	299	! i_left = nxl; i_right = nxl+nbgp-1
[1128]	300	! j_south = nys; j_north = nyn
	301	! CALL prognostic_equations_acc
[1171]	302	! i_left = nxr-nbgp+1; i_right = nxr
	303	! j_south = nys; j_north = nyn
	304	! CALL prognostic_equations_acc
[1128]	305
	306	!
	307	!-- Exchange of ghost points (lateral boundary conditions)
	308	IF ( background_communication ) THEN
	309
	310	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
	311
	312	send_receive = 'lr'
	313	sendrecv_in_background = .TRUE.
	314	req = 0
	315	req_count = 0
	316
	317	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	318	on_device = .TRUE. ! to be removed after complete porting
	319	ELSE ! of ghost point exchange
	320	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	321	ENDIF
	322
	323	CALL exchange_horiz( u_p, nbgp )
	324	CALL exchange_horiz( v_p, nbgp )
	325	CALL exchange_horiz( w_p, nbgp )
	326	CALL exchange_horiz( pt_p, nbgp )
	327	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	328	IF ( ocean ) THEN
	329	CALL exchange_horiz( sa_p, nbgp )
	330	CALL exchange_horiz( rho, nbgp )
	331	CALL exchange_horiz( prho, nbgp )
	332	ENDIF
	333	IF (humidity .OR. passive_scalar) THEN
	334	CALL exchange_horiz( q_p, nbgp )
	335	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
	336	CALL exchange_horiz( qr_p, nbgp )
	337	CALL exchange_horiz( nr_p, nbgp )
	338	ENDIF
	339	ENDIF
	340	IF ( cloud_droplets ) THEN
	341	CALL exchange_horiz( ql, nbgp )
	342	CALL exchange_horiz( ql_c, nbgp )
	343	CALL exchange_horiz( ql_v, nbgp )
	344	CALL exchange_horiz( ql_vp, nbgp )
	345	ENDIF
	346	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	347
	348	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	349	on_device = .FALSE. ! to be removed after complete porting
	350	ELSE ! of ghost point exchange
	351	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	352	ENDIF
	353
	354	sendrecv_in_background = .FALSE.
	355
	356	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'pause' )
	357
	358	ENDIF
	359
[1171]	360	! i_left = nxl+nbgp; i_right = nxr-nbgp
	361	! j_south = nys; j_north = nys+nbgp-1
	362	! CALL prognostic_equations_acc
	363	! i_left = nxl+nbgp; i_right = nxr-nbgp
	364	! j_south = nyn-nbgp+1; j_north = nyn
	365	! CALL prognostic_equations_acc
[1128]	366
	367	IF ( background_communication ) THEN
	368	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'start' )
	369	#if defined( __parallel )
	370	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	371	#endif
	372	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'pause' )
	373
	374	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'continue' )
	375
	376	send_receive = 'ns'
	377	sendrecv_in_background = .TRUE.
	378	req = 0
	379	req_count = 0
	380
	381	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	382	on_device = .TRUE. ! to be removed after complete porting
	383	ELSE ! of ghost point exchange
	384	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	385	ENDIF
	386
	387	CALL exchange_horiz( u_p, nbgp )
	388	CALL exchange_horiz( v_p, nbgp )
	389	CALL exchange_horiz( w_p, nbgp )
	390	CALL exchange_horiz( pt_p, nbgp )
	391	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	392	IF ( ocean ) THEN
	393	CALL exchange_horiz( sa_p, nbgp )
	394	CALL exchange_horiz( rho, nbgp )
	395	CALL exchange_horiz( prho, nbgp )
	396	ENDIF
	397	IF (humidity .OR. passive_scalar) THEN
	398	CALL exchange_horiz( q_p, nbgp )
	399	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
	400	CALL exchange_horiz( qr_p, nbgp )
	401	CALL exchange_horiz( nr_p, nbgp )
	402	ENDIF
	403	ENDIF
	404	IF ( cloud_droplets ) THEN
	405	CALL exchange_horiz( ql, nbgp )
	406	CALL exchange_horiz( ql_c, nbgp )
	407	CALL exchange_horiz( ql_v, nbgp )
	408	CALL exchange_horiz( ql_vp, nbgp )
	409	ENDIF
	410	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	411
	412	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	413	on_device = .FALSE. ! to be removed after complete porting
	414	ELSE ! of ghost point exchange
	415	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	416	ENDIF
	417
	418	sendrecv_in_background = .FALSE.
	419
	420	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	421
	422	ENDIF
	423
[1171]	424	! i_left = nxl+nbgp; i_right = nxr-nbgp
	425	! j_south = nys+nbgp; j_north = nyn-nbgp
	426	! CALL prognostic_equations_acc
[1128]	427
	428	IF ( background_communication ) THEN
	429	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'continue' )
	430	#if defined( __parallel )
	431	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	432	#endif
	433	send_receive = 'al'
	434	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'stop' )
	435	ENDIF
	436
[1]	437	ENDIF
	438
	439	!
[849]	440	!-- Particle transport/physics with the Lagrangian particle model
	441	!-- (only once during intermediate steps, because it uses an Euler-step)
[1128]	442	!-- ### particle model should be moved before prognostic_equations, in order
	443	!-- to regard droplet interactions directly
[63]	444	IF ( particle_advection .AND. &
	445	simulated_time >= particle_advection_start .AND. &
[1]	446	intermediate_timestep_count == 1 ) THEN
[849]	447	CALL lpm
	448	first_call_lpm = .FALSE.
[1]	449	ENDIF
	450
	451	!
	452	!-- Interaction of droplets with temperature and specific humidity.
	453	!-- Droplet condensation and evaporation is calculated within
	454	!-- advec_particles.
	455	IF ( cloud_droplets .AND. &
	456	intermediate_timestep_count == intermediate_timestep_count_max )&
	457	THEN
	458	CALL interaction_droplets_ptq
	459	ENDIF
	460
	461	!
	462	!-- Exchange of ghost points (lateral boundary conditions)
[1128]	463	IF ( .NOT. background_communication ) THEN
[1113]	464
[1128]	465	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
[1113]	466
[1128]	467	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	468	on_device = .TRUE. ! to be removed after complete porting
	469	ELSE ! of ghost point exchange
	470	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
[1053]	471	ENDIF
[1]	472
[1128]	473	CALL exchange_horiz( u_p, nbgp )
	474	CALL exchange_horiz( v_p, nbgp )
	475	CALL exchange_horiz( w_p, nbgp )
	476	CALL exchange_horiz( pt_p, nbgp )
	477	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	478	IF ( ocean ) THEN
	479	CALL exchange_horiz( sa_p, nbgp )
	480	CALL exchange_horiz( rho, nbgp )
	481	CALL exchange_horiz( prho, nbgp )
	482	ENDIF
	483	IF (humidity .OR. passive_scalar) THEN
	484	CALL exchange_horiz( q_p, nbgp )
[1179]	485	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
	486	precipitation ) THEN
[1128]	487	CALL exchange_horiz( qr_p, nbgp )
	488	CALL exchange_horiz( nr_p, nbgp )
	489	ENDIF
	490	ENDIF
	491	IF ( cloud_droplets ) THEN
	492	CALL exchange_horiz( ql, nbgp )
	493	CALL exchange_horiz( ql_c, nbgp )
	494	CALL exchange_horiz( ql_v, nbgp )
	495	CALL exchange_horiz( ql_vp, nbgp )
	496	ENDIF
	497	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	498
	499	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	500	on_device = .FALSE. ! to be removed after complete porting
	501	ELSE ! of ghost point exchange
	502	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	503	ENDIF
	504
	505	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	506
[1113]	507	ENDIF
	508
[1]	509	!
	510	!-- Boundary conditions for the prognostic quantities (except of the
	511	!-- velocities at the outflow in case of a non-cyclic lateral wall)
[1113]	512	CALL boundary_conds
[1]	513
	514	!
[73]	515	!-- Swap the time levels in preparation for the next time step.
	516	CALL swap_timelevel
	517
	518	!
[1]	519	!-- Temperature offset must be imposed at cyclic boundaries in x-direction
	520	!-- when a sloping surface is used
	521	IF ( sloping_surface ) THEN
[707]	522	IF ( nxl == 0 ) pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - &
	523	pt_slope_offset
	524	IF ( nxr == nx ) pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + &
	525	pt_slope_offset
[1]	526	ENDIF
	527
	528	!
[151]	529	!-- Impose a turbulent inflow using the recycling method
	530	IF ( turbulent_inflow ) CALL inflow_turbulence
	531
	532	!
[1]	533	!-- Impose a random perturbation on the horizontal velocity field
[106]	534	IF ( create_disturbances .AND. &
	535	( call_psolver_at_all_substeps .AND. &
[1]	536	intermediate_timestep_count == intermediate_timestep_count_max )&
[106]	537	.OR. ( .NOT. call_psolver_at_all_substeps .AND. &
	538	intermediate_timestep_count == 1 ) ) &
[1]	539	THEN
	540	time_disturb = time_disturb + dt_3d
	541	IF ( time_disturb >= dt_disturb ) THEN
[1111]	542	!$acc update host( u, v )
[1113]	543	IF ( numprocs == 1 ) on_device = .FALSE. ! workaround, remove later
[87]	544	IF ( hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit ) THEN
[75]	545	CALL disturb_field( nzb_u_inner, tend, u )
	546	CALL disturb_field( nzb_v_inner, tend, v )
[707]	547	ELSEIF ( .NOT. bc_lr_cyc .OR. .NOT. bc_ns_cyc ) THEN
[1]	548	!
	549	!-- Runs with a non-cyclic lateral wall need perturbations
	550	!-- near the inflow throughout the whole simulation
	551	dist_range = 1
[75]	552	CALL disturb_field( nzb_u_inner, tend, u )
	553	CALL disturb_field( nzb_v_inner, tend, v )
[1]	554	dist_range = 0
	555	ENDIF
[1113]	556	IF ( numprocs == 1 ) on_device = .TRUE. ! workaround, remove later
[1111]	557	!$acc update device( u, v )
[1]	558	time_disturb = time_disturb - dt_disturb
	559	ENDIF
	560	ENDIF
	561
	562	!
	563	!-- Reduce the velocity divergence via the equation for perturbation
	564	!-- pressure.
[106]	565	IF ( intermediate_timestep_count == 1 .OR. &
	566	call_psolver_at_all_substeps ) THEN
[1]	567	CALL pres
	568	ENDIF
	569
	570	!
	571	!-- If required, compute liquid water content
[1015]	572	IF ( cloud_physics ) THEN
	573	CALL calc_liquid_water_content
	574	!$acc update device( ql )
	575	ENDIF
[1115]	576	!
	577	!-- If required, compute virtual potential temperature
	578	IF ( humidity ) THEN
	579	CALL compute_vpt
	580	!$acc update device( vpt )
	581	ENDIF
[1]	582	!
	583	!-- Compute the diffusion quantities
	584	IF ( .NOT. constant_diffusion ) THEN
	585
	586	!
[1276]	587	!-- Determine surface fluxes shf and qsws and surface values
	588	!-- pt_surface and q_surface in dependence on data from external
	589	!-- file LSF_DATA respectively
	590	IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
	591	intermediate_timestep_count == intermediate_timestep_count_max )&
	592	THEN
	593	CALL ls_forcing_surf ( simulated_time )
	594	ENDIF
	595
	596	!
[1]	597	!-- First the vertical fluxes in the Prandtl layer are being computed
	598	IF ( prandtl_layer ) THEN
	599	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'start' )
	600	CALL prandtl_fluxes
	601	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'stop' )
	602	ENDIF
[1241]	603
[1]	604	!
	605	!-- Compute the diffusion coefficients
	606	CALL cpu_log( log_point(17), 'diffusivities', 'start' )
[75]	607	IF ( .NOT. humidity ) THEN
[97]	608	IF ( ocean ) THEN
[388]	609	CALL diffusivities( prho, prho_reference )
[97]	610	ELSE
	611	CALL diffusivities( pt, pt_reference )
	612	ENDIF
[1]	613	ELSE
[97]	614	CALL diffusivities( vpt, pt_reference )
[1]	615	ENDIF
	616	CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
	617
	618	ENDIF
	619
	620	ENDDO ! Intermediate step loop
	621
	622	!
	623	!-- Increase simulation time and output times
[1111]	624	nr_timesteps_this_run = nr_timesteps_this_run + 1
[291]	625	current_timestep_number = current_timestep_number + 1
	626	simulated_time = simulated_time + dt_3d
	627	simulated_time_chr = time_to_string( simulated_time )
	628	time_since_reference_point = simulated_time - coupling_start_time
	629
[1]	630	IF ( simulated_time >= skip_time_data_output_av ) THEN
	631	time_do_av = time_do_av + dt_3d
	632	ENDIF
	633	IF ( simulated_time >= skip_time_do2d_xy ) THEN
	634	time_do2d_xy = time_do2d_xy + dt_3d
	635	ENDIF
	636	IF ( simulated_time >= skip_time_do2d_xz ) THEN
	637	time_do2d_xz = time_do2d_xz + dt_3d
	638	ENDIF
	639	IF ( simulated_time >= skip_time_do2d_yz ) THEN
	640	time_do2d_yz = time_do2d_yz + dt_3d
	641	ENDIF
	642	IF ( simulated_time >= skip_time_do3d ) THEN
	643	time_do3d = time_do3d + dt_3d
	644	ENDIF
[410]	645	DO mid = 1, masks
	646	IF ( simulated_time >= skip_time_domask(mid) ) THEN
	647	time_domask(mid)= time_domask(mid) + dt_3d
	648	ENDIF
	649	ENDDO
[1]	650	time_dvrp = time_dvrp + dt_3d
	651	IF ( simulated_time >= skip_time_dosp ) THEN
	652	time_dosp = time_dosp + dt_3d
	653	ENDIF
	654	time_dots = time_dots + dt_3d
[849]	655	IF ( .NOT. first_call_lpm ) THEN
[1]	656	time_dopts = time_dopts + dt_3d
	657	ENDIF
	658	IF ( simulated_time >= skip_time_dopr ) THEN
	659	time_dopr = time_dopr + dt_3d
	660	ENDIF
	661	time_dopr_listing = time_dopr_listing + dt_3d
	662	time_run_control = time_run_control + dt_3d
	663
	664	!
[102]	665	!-- Data exchange between coupled models
[291]	666	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[102]	667	time_coupling = time_coupling + dt_3d
[343]	668
[108]	669	!
	670	!-- In case of model termination initiated by the local model
	671	!-- (terminate_coupled > 0), the coupler must be skipped because it would
	672	!-- cause an MPI intercomminucation hang.
	673	!-- If necessary, the coupler will be called at the beginning of the
	674	!-- next restart run.
	675	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
[102]	676	CALL surface_coupler
	677	time_coupling = time_coupling - dt_coupling
	678	ENDDO
	679	ENDIF
	680
	681	!
[46]	682	!-- Execute user-defined actions
	683	CALL user_actions( 'after_integration' )
	684
	685	!
[1]	686	!-- If Galilei transformation is used, determine the distance that the
	687	!-- model has moved so far
	688	IF ( galilei_transformation ) THEN
	689	advected_distance_x = advected_distance_x + u_gtrans * dt_3d
	690	advected_distance_y = advected_distance_y + v_gtrans * dt_3d
	691	ENDIF
	692
	693	!
	694	!-- Check, if restart is necessary (because cpu-time is expiring or
	695	!-- because it is forced by user) and set stop flag
[108]	696	!-- This call is skipped if the remote model has already initiated a restart.
	697	IF ( .NOT. terminate_run ) CALL check_for_restart
[1]	698
	699	!
	700	!-- Carry out statistical analysis and output at the requested output times.
	701	!-- The MOD function is used for calculating the output time counters (like
	702	!-- time_dopr) in order to regard a possible decrease of the output time
	703	!-- interval in case of restart runs
	704
	705	!
	706	!-- Set a flag indicating that so far no statistics have been created
	707	!-- for this time step
	708	flow_statistics_called = .FALSE.
	709
	710	!
	711	!-- If required, call flow_statistics for averaging in time
	712	IF ( averaging_interval_pr /= 0.0 .AND. &
	713	( dt_dopr - time_dopr ) <= averaging_interval_pr .AND. &
	714	simulated_time >= skip_time_dopr ) THEN
	715	time_dopr_av = time_dopr_av + dt_3d
	716	IF ( time_dopr_av >= dt_averaging_input_pr ) THEN
	717	do_sum = .TRUE.
	718	time_dopr_av = MOD( time_dopr_av, &
	719	MAX( dt_averaging_input_pr, dt_3d ) )
	720	ENDIF
	721	ENDIF
	722	IF ( do_sum ) CALL flow_statistics
	723
	724	!
[410]	725	!-- Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
[1]	726	IF ( averaging_interval /= 0.0 .AND. &
	727	( dt_data_output_av - time_do_av ) <= averaging_interval .AND. &
	728	simulated_time >= skip_time_data_output_av ) &
	729	THEN
	730	time_do_sla = time_do_sla + dt_3d
	731	IF ( time_do_sla >= dt_averaging_input ) THEN
	732	CALL sum_up_3d_data
	733	average_count_3d = average_count_3d + 1
	734	time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
	735	ENDIF
	736	ENDIF
	737
	738	!
	739	!-- Calculate spectra for time averaging
	740	IF ( averaging_interval_sp /= 0.0 .AND. &
	741	( dt_dosp - time_dosp ) <= averaging_interval_sp .AND. &
	742	simulated_time >= skip_time_dosp ) THEN
	743	time_dosp_av = time_dosp_av + dt_3d
	744	IF ( time_dosp_av >= dt_averaging_input_pr ) THEN
	745	CALL calc_spectra
	746	time_dosp_av = MOD( time_dosp_av, &
	747	MAX( dt_averaging_input_pr, dt_3d ) )
	748	ENDIF
	749	ENDIF
	750
	751	!
	752	!-- Computation and output of run control parameters.
[1001]	753	!-- This is also done whenever perturbations have been imposed
[1]	754	IF ( time_run_control >= dt_run_control .OR. &
[1001]	755	timestep_scheme(1:5) /= 'runge' .OR. disturbance_created ) &
[1]	756	THEN
	757	CALL run_control
	758	IF ( time_run_control >= dt_run_control ) THEN
	759	time_run_control = MOD( time_run_control, &
	760	MAX( dt_run_control, dt_3d ) )
	761	ENDIF
	762	ENDIF
	763
	764	!
	765	!-- Profile output (ASCII) on file
	766	IF ( time_dopr_listing >= dt_dopr_listing ) THEN
	767	CALL print_1d
	768	time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, &
	769	dt_3d ) )
	770	ENDIF
	771
	772	!
	773	!-- Graphic output for PROFIL
	774	IF ( time_dopr >= dt_dopr ) THEN
	775	IF ( dopr_n /= 0 ) CALL data_output_profiles
	776	time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
	777	time_dopr_av = 0.0 ! due to averaging (see above)
	778	ENDIF
	779
	780	!
	781	!-- Graphic output for time series
	782	IF ( time_dots >= dt_dots ) THEN
[48]	783	CALL data_output_tseries
[1]	784	time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
	785	ENDIF
	786
	787	!
	788	!-- Output of spectra (formatted for use with PROFIL), in case of no
	789	!-- time averaging, spectra has to be calculated before
	790	IF ( time_dosp >= dt_dosp ) THEN
	791	IF ( average_count_sp == 0 ) CALL calc_spectra
	792	CALL data_output_spectra
	793	time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
	794	ENDIF
	795
	796	!
	797	!-- 2d-data output (cross-sections)
	798	IF ( time_do2d_xy >= dt_do2d_xy ) THEN
	799	CALL data_output_2d( 'xy', 0 )
	800	time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
	801	ENDIF
	802	IF ( time_do2d_xz >= dt_do2d_xz ) THEN
	803	CALL data_output_2d( 'xz', 0 )
	804	time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
	805	ENDIF
	806	IF ( time_do2d_yz >= dt_do2d_yz ) THEN
	807	CALL data_output_2d( 'yz', 0 )
	808	time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
	809	ENDIF
	810
	811	!
	812	!-- 3d-data output (volume data)
	813	IF ( time_do3d >= dt_do3d ) THEN
	814	CALL data_output_3d( 0 )
	815	time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
	816	ENDIF
	817
	818	!
[410]	819	!-- masked data output
[1308]	820	!-- Parallel netcdf output is not tested so far for masked data, hence
	821	!-- netcdf_data_format is switched back to non-paralell output.
	822	netcdf_data_format_save = netcdf_data_format
	823	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
	824	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
[410]	825	DO mid = 1, masks
	826	IF ( time_domask(mid) >= dt_domask(mid) ) THEN
	827	CALL data_output_mask( 0 )
	828	time_domask(mid) = MOD( time_domask(mid), &
	829	MAX( dt_domask(mid), dt_3d ) )
	830	ENDIF
	831	ENDDO
[1308]	832	netcdf_data_format = netcdf_data_format_save
[410]	833
	834	!
	835	!-- Output of time-averaged 2d/3d/masked data
[1]	836	IF ( time_do_av >= dt_data_output_av ) THEN
	837	CALL average_3d_data
	838	CALL data_output_2d( 'xy', 1 )
	839	CALL data_output_2d( 'xz', 1 )
	840	CALL data_output_2d( 'yz', 1 )
	841	CALL data_output_3d( 1 )
[1308]	842	!-- Parallel netcdf output is not tested so far for masked data, hence
	843	!-- netcdf_data_format is switched back to non-paralell output.
	844	netcdf_data_format_save = netcdf_data_format
	845	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
	846	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
[410]	847	DO mid = 1, masks
	848	CALL data_output_mask( 1 )
	849	ENDDO
[1308]	850	netcdf_data_format = netcdf_data_format_save
[1]	851	time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
	852	ENDIF
	853
	854	!
	855	!-- Output of particle time series
[253]	856	IF ( particle_advection ) THEN
	857	IF ( time_dopts >= dt_dopts .OR. &
	858	( simulated_time >= particle_advection_start .AND. &
[849]	859	first_call_lpm ) ) THEN
[253]	860	CALL data_output_ptseries
	861	time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
	862	ENDIF
[1]	863	ENDIF
	864
	865	!
	866	!-- Output of dvrp-graphics (isosurface, particles, slicer)
	867	#if defined( __dvrp_graphics )
	868	CALL DVRP_LOG_EVENT( -2, current_timestep_number-1 )
	869	#endif
	870	IF ( time_dvrp >= dt_dvrp ) THEN
	871	CALL data_output_dvrp
	872	time_dvrp = MOD( time_dvrp, MAX( dt_dvrp, dt_3d ) )
	873	ENDIF
	874	#if defined( __dvrp_graphics )
	875	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	876	#endif
	877
	878	!
	879	!-- If required, set the heat flux for the next time step at a random value
	880	IF ( constant_heatflux .AND. random_heatflux ) CALL disturb_heatflux
	881
	882	!
	883	!-- Execute user-defined actions
	884	CALL user_actions( 'after_timestep' )
	885
	886	CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
	887
[667]	888
[1]	889	ENDDO ! time loop
	890
	891	#if defined( __dvrp_graphics )
	892	CALL DVRP_LOG_EVENT( -2, current_timestep_number )
	893	#endif
	894
	895	END SUBROUTINE time_integration

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