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source: palm/trunk/SOURCE/time_integration.f90 @ 1316

Last change on this file since 1316 was 1310, checked in by raasch, 11 years ago
update of GPL copyright
Property svn:keywords set to `Id`
File size: 33.3 KB

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

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