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source: palm/trunk/SOURCE/time_integration.f90 @ 1561

Last change on this file since 1561 was 1552, checked in by maronga, 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	! ------------------
[1366]	22	!
[1552]	23	!
[1366]	24	! Former revisions:
	25	! -----------------
	26	! $Id: time_integration.f90 1552 2015-03-03 14:27:15Z keck $
	27	!
[1552]	28	! 1551 2015-03-03 14:18:16Z maronga
	29	! Added interface for different radiation schemes.
	30	!
[1497]	31	! 1496 2014-12-02 17:25:50Z maronga
	32	! Added calls for the land surface model and radiation scheme
	33	!
[1403]	34	! 1402 2014-05-09 14:25:13Z raasch
	35	! location messages modified
	36	!
[1385]	37	! 1384 2014-05-02 14:31:06Z raasch
	38	! location messages added
	39	!
[1381]	40	! 1380 2014-04-28 12:40:45Z heinze
	41	! CALL of nudge_ref added
	42	! bc_pt_t_val and bc_q_t_val are updated in case nudging is used
	43	!
[1366]	44	! 1365 2014-04-22 15:03:56Z boeske
[1365]	45	! Reset sums_ls_l to zero at each timestep
	46	! +sums_ls_l
	47	! Calculation of reference state (previously in subroutine calc_mean_profile)
	48
[1343]	49	! 1342 2014-03-26 17:04:47Z kanani
	50	! REAL constants defined as wp-kind
	51	!
[1321]	52	! 1320 2014-03-20 08:40:49Z raasch
[1320]	53	! ONLY-attribute added to USE-statements,
	54	! kind-parameters added to all INTEGER and REAL declaration statements,
	55	! kinds are defined in new module kinds,
	56	! old module precision_kind is removed,
	57	! revision history before 2012 removed,
	58	! comment fields (!:) to be used for variable explanations added to
	59	! all variable declaration statements
[1319]	60	! 1318 2014-03-17 13:35:16Z raasch
	61	! module interfaces removed
	62	!
[1309]	63	! 1308 2014-03-13 14:58:42Z fricke
	64	! +netcdf_data_format_save
	65	! For masked data, parallel netcdf output is not tested so far, hence
	66	! netcdf_data_format is switched back to non-paralell output.
	67	!
[1277]	68	! 1276 2014-01-15 13:40:41Z heinze
	69	! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars
	70	!
[1258]	71	! 1257 2013-11-08 15:18:40Z raasch
	72	! acc-update-host directive for timestep removed
	73	!
[1242]	74	! 1241 2013-10-30 11:36:58Z heinze
	75	! Generalize calc_mean_profile for wider use
	76	! Determine shf and qsws in dependence on data from LSF_DATA
	77	! Determine ug and vg in dependence on data from LSF_DATA
[1222]	78	! 1221 2013-09-10 08:59:13Z raasch
	79	! host update of arrays before timestep is called
	80	!
[1182]	81	! 1179 2013-06-14 05:57:58Z raasch
	82	! mean profiles for reference state are only calculated if required,
	83	! small bugfix for background communication
	84	!
[1172]	85	! 1171 2013-05-30 11:27:45Z raasch
	86	! split of prognostic_equations deactivated (comment lines), for the time being
	87	!
[1132]	88	! 1128 2013-04-12 06:19:32Z raasch
[1128]	89	! asynchronous transfer of ghost point data realized for acc-optimized version:
	90	! prognostic_equations are first called two times for those points required for
	91	! the left-right and north-south exchange, respectively, and then for the
	92	! remaining points,
	93	! those parts requiring global communication moved from prognostic_equations to
	94	! here
[392]	95	!
[1116]	96	! 1115 2013-03-26 18:16:16Z hoffmann
	97	! calculation of qr and nr is restricted to precipitation
	98	!
[1114]	99	! 1113 2013-03-10 02:48:14Z raasch
	100	! GPU-porting of boundary conditions,
	101	! openACC directives updated
	102	! formal parameter removed from routine boundary_conds
	103	!
[1112]	104	! 1111 2013-03-08 23:54:10Z raasch
	105	! +internal timestep counter for cpu statistics added,
	106	! openACC directives updated
	107	!
[1093]	108	! 1092 2013-02-02 11:24:22Z raasch
	109	! unused variables removed
	110	!
[1066]	111	! 1065 2012-11-22 17:42:36Z hoffmann
	112	! exchange of diss (dissipation rate) in case of turbulence = .TRUE. added
	113	!
[1054]	114	! 1053 2012-11-13 17:11:03Z hoffmann
	115	! exchange of ghost points for nr, qr added
	116	!
[1037]	117	! 1036 2012-10-22 13:43:42Z raasch
	118	! code put under GPL (PALM 3.9)
	119	!
[1020]	120	! 1019 2012-09-28 06:46:45Z raasch
	121	! non-optimized version of prognostic_equations removed
	122	!
[1017]	123	! 1015 2012-09-27 09:23:24Z raasch
	124	! +call of prognostic_equations_acc
	125	!
[1002]	126	! 1001 2012-09-13 14:08:46Z raasch
	127	! all actions concerning leapfrog- and upstream-spline-scheme removed
	128	!
[850]	129	! 849 2012-03-15 10:35:09Z raasch
	130	! advec_particles renamed lpm, first_call_advec_particles renamed first_call_lpm
	131	!
[826]	132	! 825 2012-02-19 03:03:44Z raasch
	133	! wang_collision_kernel renamed wang_kernel
	134	!
[1]	135	! Revision 1.1 1997/08/11 06:19:04 raasch
	136	! Initial revision
	137	!
	138	!
	139	! Description:
	140	! ------------
	141	! Integration in time of the model equations, statistical analysis and graphic
	142	! output
	143	!------------------------------------------------------------------------------!
	144
[1320]	145	USE advec_ws, &
	146	ONLY: ws_statistics
	147
	148	USE arrays_3d, &
[1380]	149	ONLY: diss, dzu, e_p, nr_p, prho, pt, pt_p, pt_init, q_init, q, ql, &
	150	ql_c, ql_v, ql_vp, qr_p, q_p, ref_state, rho, sa_p, tend, u, &
	151	u_p, v, vpt, v_p, w_p
[1320]	152
[1365]	153	USE calc_mean_profile_mod, &
[1320]	154	ONLY: calc_mean_profile
	155
	156	USE control_parameters, &
	157	ONLY: advected_distance_x, advected_distance_y, average_count_3d, &
	158	average_count_sp, averaging_interval, averaging_interval_pr, &
[1380]	159	averaging_interval_sp, bc_lr_cyc, bc_ns_cyc, bc_pt_t_val, &
	160	bc_q_t_val, call_psolver_at_all_substeps, cloud_droplets, &
	161	cloud_physics, constant_heatflux, create_disturbances, dopr_n, &
[1320]	162	constant_diffusion, coupling_mode, coupling_start_time, &
	163	current_timestep_number, disturbance_created, &
	164	disturbance_energy_limit, dist_range, do_sum, dt_3d, &
	165	dt_averaging_input, dt_averaging_input_pr, dt_coupling, &
	166	dt_data_output_av, dt_disturb, dt_do2d_xy, dt_do2d_xz, &
	167	dt_do2d_yz, dt_do3d, dt_domask,dt_dopts, dt_dopr, &
	168	dt_dopr_listing, dt_dosp, dt_dots, dt_dvrp, dt_run_control, &
	169	end_time, first_call_lpm, galilei_transformation, humidity, &
	170	icloud_scheme, intermediate_timestep_count, &
	171	intermediate_timestep_count_max, large_scale_forcing, &
	172	loop_optimization, lsf_surf, lsf_vert, masks, mid, &
[1365]	173	netcdf_data_format, neutral, nr_timesteps_this_run, nudging, &
	174	ocean, on_device, passive_scalar, prandtl_layer, precipitation, &
[1320]	175	prho_reference, pt_reference, pt_slope_offset, random_heatflux, &
	176	run_coupled, simulated_time, simulated_time_chr, &
	177	skip_time_do2d_xy, skip_time_do2d_xz, skip_time_do2d_yz, &
	178	skip_time_do3d, skip_time_domask, skip_time_dopr, &
	179	skip_time_dosp, skip_time_data_output_av, sloping_surface, &
	180	stop_dt, terminate_coupled, terminate_run, timestep_scheme, &
	181	time_coupling, time_do2d_xy, time_do2d_xz, time_do2d_yz, &
	182	time_do3d, time_domask, time_dopr, time_dopr_av, &
	183	time_dopr_listing, time_dopts, time_dosp, time_dosp_av, &
	184	time_dots, time_do_av, time_do_sla, time_disturb, time_dvrp, &
[1496]	185	time_run_control, time_since_reference_point, &
	186	turbulence, &
[1320]	187	turbulent_inflow, use_initial_profile_as_reference, &
	188	use_single_reference_value, u_gtrans, v_gtrans, ws_scheme_mom, &
	189	ws_scheme_sca
	190
	191	USE cpulog, &
	192	ONLY: cpu_log, log_point, log_point_s
	193
	194	USE indices, &
	195	ONLY: i_left, i_right, j_north, j_south, nbgp, nx, nxl, nxlg, nxr, &
[1380]	196	nxrg, nyn, nys, nzb, nzt, nzb_u_inner, nzb_v_inner
[1320]	197
	198	USE interaction_droplets_ptq_mod, &
	199	ONLY: interaction_droplets_ptq
	200
	201	USE kinds
	202
[1496]	203	USE land_surface_model_mod, &
	204	ONLY: land_surface, lsm_energy_balance, lsm_soil_model
	205
[1320]	206	USE ls_forcing_mod, &
	207	ONLY: ls_forcing_surf, ls_forcing_vert
	208
[1365]	209	USE nudge_mod, &
[1380]	210	ONLY: calc_tnudge, nudge_ref
[1365]	211
[1320]	212	USE particle_attributes, &
	213	ONLY: particle_advection, particle_advection_start, wang_kernel
	214
[1]	215	USE pegrid
	216
[1320]	217	USE production_e_mod, &
	218	ONLY: production_e_init
	219
[1402]	220	USE progress_bar, &
	221	ONLY: finish_progress_bar, output_progress_bar
	222
[1320]	223	USE prognostic_equations_mod, &
	224	ONLY: prognostic_equations_acc, prognostic_equations_cache, &
	225	prognostic_equations_vector
	226
[1496]	227	USE radiation_model_mod, &
[1551]	228	ONLY: dt_radiation, irad_scheme, radiation, radiation_clearsky, &
	229	radiation_constant, radiation_rrtm, time_radiation
[1496]	230
[1320]	231	USE statistics, &
[1365]	232	ONLY: flow_statistics_called, hom, pr_palm, sums_ls_l
[1320]	233
	234	USE user_actions_mod, &
	235	ONLY: user_actions
	236
[1]	237	IMPLICIT NONE
	238
[1320]	239	CHARACTER (LEN=9) :: time_to_string !:
[1]	240
[1320]	241	INTEGER(iwp) :: netcdf_data_format_save !:
	242
[1]	243	!
	244	!-- At the beginning of a simulation determine the time step as well as
	245	!-- determine and print out the run control parameters
[1342]	246	IF ( simulated_time == 0.0_wp ) CALL timestep
[667]	247
[1]	248	CALL run_control
	249
[667]	250
[108]	251	!
	252	!-- Data exchange between coupled models in case that a call has been omitted
	253	!-- at the end of the previous run of a job chain.
[291]	254	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[108]	255	!
	256	!-- In case of model termination initiated by the local model the coupler
	257	!-- must not be called because this would again cause an MPI hang.
	258	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
	259	CALL surface_coupler
	260	time_coupling = time_coupling - dt_coupling
	261	ENDDO
[1342]	262	IF (time_coupling == 0.0_wp .AND. time_since_reference_point < dt_coupling)&
[348]	263	THEN
	264	time_coupling = time_since_reference_point
	265	ENDIF
[108]	266	ENDIF
	267
	268
[1]	269	#if defined( __dvrp_graphics )
	270	!
	271	!-- Time measurement with dvrp software
	272	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	273	#endif
	274
[1402]	275	CALL location_message( 'start with time-stepping', .TRUE. )
[1]	276	!
	277	!-- Start of the time loop
	278	DO WHILE ( simulated_time < end_time .AND. .NOT. stop_dt .AND. &
	279	.NOT. terminate_run )
	280
	281	CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
[1221]	282
[1]	283	!
	284	!-- Determine size of next time step
[1342]	285	IF ( simulated_time /= 0.0_wp ) THEN
[1221]	286	CALL timestep
	287	ENDIF
	288
[1]	289	!
[1241]	290	!-- Determine ug, vg and w_subs in dependence on data from external file
	291	!-- LSF_DATA
[1365]	292	IF ( large_scale_forcing .AND. lsf_vert ) THEN
[1241]	293	CALL ls_forcing_vert ( simulated_time )
[1365]	294	sums_ls_l = 0.0_wp
[1241]	295	ENDIF
	296
	297	!
[1380]	298	!-- Set pt_init and q_init to the current profiles taken from
	299	!-- NUDGING_DATA
	300	IF ( nudging ) THEN
	301	CALL nudge_ref ( simulated_time )
	302	!
	303	!-- Store temperature gradient at the top boundary for possible Neumann
	304	!-- boundary condition
	305	bc_pt_t_val = ( pt_init(nzt+1) - pt_init(nzt) ) / dzu(nzt+1)
	306	bc_q_t_val = ( q_init(nzt+1) - q_init(nzt) ) / dzu(nzt+1)
	307	ENDIF
	308
	309	!
[1]	310	!-- Execute the user-defined actions
	311	CALL user_actions( 'before_timestep' )
	312
	313	!
	314	!-- Start of intermediate step loop
	315	intermediate_timestep_count = 0
	316	DO WHILE ( intermediate_timestep_count < &
	317	intermediate_timestep_count_max )
	318
	319	intermediate_timestep_count = intermediate_timestep_count + 1
	320
	321	!
	322	!-- Set the steering factors for the prognostic equations which depend
	323	!-- on the timestep scheme
	324	CALL timestep_scheme_steering
	325
	326	!
[1128]	327	!-- Calculate those variables needed in the tendency terms which need
	328	!-- global communication
[1179]	329	IF ( .NOT. use_single_reference_value .AND. &
	330	.NOT. use_initial_profile_as_reference ) THEN
	331	!
	332	!-- Horizontally averaged profiles to be used as reference state in
	333	!-- buoyancy terms (WARNING: only the respective last call of
	334	!-- calc_mean_profile defines the reference state!)
[1365]	335	IF ( .NOT. neutral ) THEN
	336	CALL calc_mean_profile( pt, 4 )
	337	ref_state(:) = hom(:,1,4,0) ! this is used in the buoyancy term
	338	ENDIF
	339	IF ( ocean ) THEN
	340	CALL calc_mean_profile( rho, 64 )
	341	ref_state(:) = hom(:,1,64,0)
	342	ENDIF
	343	IF ( humidity ) THEN
	344	CALL calc_mean_profile( vpt, 44 )
	345	ref_state(:) = hom(:,1,44,0)
	346	ENDIF
	347
[1179]	348	ENDIF
	349
[1128]	350	IF ( .NOT. constant_diffusion ) CALL production_e_init
	351	IF ( ( ws_scheme_mom .OR. ws_scheme_sca ) .AND. &
	352	intermediate_timestep_count == 1 ) CALL ws_statistics
[1365]	353	!
	354	!-- In case of nudging calculate current nudging time scale and horizontal
[1380]	355	!-- means of u, v, pt and q
[1365]	356	IF ( nudging ) THEN
	357	CALL calc_tnudge( simulated_time )
	358	CALL calc_mean_profile( u, 1 )
	359	CALL calc_mean_profile( v, 2 )
	360	CALL calc_mean_profile( pt, 4 )
	361	CALL calc_mean_profile( q, 41 )
	362	ENDIF
[1128]	363
	364	!
[1]	365	!-- Solve the prognostic equations. A fast cache optimized version with
	366	!-- only one single loop is used in case of Piascek-Williams advection
	367	!-- scheme. NEC vector machines use a different version, because
	368	!-- in the other versions a good vectorization is prohibited due to
	369	!-- inlining problems.
[1019]	370	IF ( loop_optimization == 'cache' ) THEN
	371	CALL prognostic_equations_cache
	372	ELSEIF ( loop_optimization == 'vector' ) THEN
[63]	373	CALL prognostic_equations_vector
[1015]	374	ELSEIF ( loop_optimization == 'acc' ) THEN
[1171]	375	i_left = nxl; i_right = nxr
	376	j_south = nys; j_north = nyn
	377	CALL prognostic_equations_acc
	378
	379	! i_left = nxl; i_right = nxl+nbgp-1
[1128]	380	! j_south = nys; j_north = nyn
	381	! CALL prognostic_equations_acc
[1171]	382	! i_left = nxr-nbgp+1; i_right = nxr
	383	! j_south = nys; j_north = nyn
	384	! CALL prognostic_equations_acc
[1128]	385
	386	!
	387	!-- Exchange of ghost points (lateral boundary conditions)
	388	IF ( background_communication ) THEN
	389
	390	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
	391
	392	send_receive = 'lr'
	393	sendrecv_in_background = .TRUE.
	394	req = 0
	395	req_count = 0
	396
	397	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	398	on_device = .TRUE. ! to be removed after complete porting
	399	ELSE ! of ghost point exchange
	400	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	401	ENDIF
	402
	403	CALL exchange_horiz( u_p, nbgp )
	404	CALL exchange_horiz( v_p, nbgp )
	405	CALL exchange_horiz( w_p, nbgp )
	406	CALL exchange_horiz( pt_p, nbgp )
	407	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	408	IF ( ocean ) THEN
	409	CALL exchange_horiz( sa_p, nbgp )
	410	CALL exchange_horiz( rho, nbgp )
	411	CALL exchange_horiz( prho, nbgp )
	412	ENDIF
	413	IF (humidity .OR. passive_scalar) THEN
	414	CALL exchange_horiz( q_p, nbgp )
	415	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
	416	CALL exchange_horiz( qr_p, nbgp )
	417	CALL exchange_horiz( nr_p, nbgp )
	418	ENDIF
	419	ENDIF
	420	IF ( cloud_droplets ) THEN
	421	CALL exchange_horiz( ql, nbgp )
	422	CALL exchange_horiz( ql_c, nbgp )
	423	CALL exchange_horiz( ql_v, nbgp )
	424	CALL exchange_horiz( ql_vp, nbgp )
	425	ENDIF
	426	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	427
	428	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	429	on_device = .FALSE. ! to be removed after complete porting
	430	ELSE ! of ghost point exchange
	431	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	432	ENDIF
	433
	434	sendrecv_in_background = .FALSE.
	435
	436	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'pause' )
	437
	438	ENDIF
	439
[1171]	440	! i_left = nxl+nbgp; i_right = nxr-nbgp
	441	! j_south = nys; j_north = nys+nbgp-1
	442	! CALL prognostic_equations_acc
	443	! i_left = nxl+nbgp; i_right = nxr-nbgp
	444	! j_south = nyn-nbgp+1; j_north = nyn
	445	! CALL prognostic_equations_acc
[1128]	446
	447	IF ( background_communication ) THEN
	448	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'start' )
	449	#if defined( __parallel )
	450	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	451	#endif
	452	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'pause' )
	453
	454	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'continue' )
	455
	456	send_receive = 'ns'
	457	sendrecv_in_background = .TRUE.
	458	req = 0
	459	req_count = 0
	460
	461	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	462	on_device = .TRUE. ! to be removed after complete porting
	463	ELSE ! of ghost point exchange
	464	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	465	ENDIF
	466
	467	CALL exchange_horiz( u_p, nbgp )
	468	CALL exchange_horiz( v_p, nbgp )
	469	CALL exchange_horiz( w_p, nbgp )
	470	CALL exchange_horiz( pt_p, nbgp )
	471	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	472	IF ( ocean ) THEN
	473	CALL exchange_horiz( sa_p, nbgp )
	474	CALL exchange_horiz( rho, nbgp )
	475	CALL exchange_horiz( prho, nbgp )
	476	ENDIF
	477	IF (humidity .OR. passive_scalar) THEN
	478	CALL exchange_horiz( q_p, nbgp )
	479	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
	480	CALL exchange_horiz( qr_p, nbgp )
	481	CALL exchange_horiz( nr_p, nbgp )
	482	ENDIF
	483	ENDIF
	484	IF ( cloud_droplets ) THEN
	485	CALL exchange_horiz( ql, nbgp )
	486	CALL exchange_horiz( ql_c, nbgp )
	487	CALL exchange_horiz( ql_v, nbgp )
	488	CALL exchange_horiz( ql_vp, nbgp )
	489	ENDIF
	490	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	491
	492	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	493	on_device = .FALSE. ! to be removed after complete porting
	494	ELSE ! of ghost point exchange
	495	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	496	ENDIF
	497
	498	sendrecv_in_background = .FALSE.
	499
	500	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	501
	502	ENDIF
	503
[1171]	504	! i_left = nxl+nbgp; i_right = nxr-nbgp
	505	! j_south = nys+nbgp; j_north = nyn-nbgp
	506	! CALL prognostic_equations_acc
[1128]	507
	508	IF ( background_communication ) THEN
	509	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'continue' )
	510	#if defined( __parallel )
	511	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	512	#endif
	513	send_receive = 'al'
	514	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'stop' )
	515	ENDIF
	516
[1]	517	ENDIF
	518
	519	!
[849]	520	!-- Particle transport/physics with the Lagrangian particle model
	521	!-- (only once during intermediate steps, because it uses an Euler-step)
[1128]	522	!-- ### particle model should be moved before prognostic_equations, in order
	523	!-- to regard droplet interactions directly
[63]	524	IF ( particle_advection .AND. &
	525	simulated_time >= particle_advection_start .AND. &
[1]	526	intermediate_timestep_count == 1 ) THEN
[849]	527	CALL lpm
	528	first_call_lpm = .FALSE.
[1]	529	ENDIF
	530
	531	!
	532	!-- Interaction of droplets with temperature and specific humidity.
	533	!-- Droplet condensation and evaporation is calculated within
	534	!-- advec_particles.
	535	IF ( cloud_droplets .AND. &
	536	intermediate_timestep_count == intermediate_timestep_count_max )&
	537	THEN
	538	CALL interaction_droplets_ptq
	539	ENDIF
	540
	541	!
	542	!-- Exchange of ghost points (lateral boundary conditions)
[1128]	543	IF ( .NOT. background_communication ) THEN
[1113]	544
[1128]	545	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
[1113]	546
[1128]	547	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	548	on_device = .TRUE. ! to be removed after complete porting
	549	ELSE ! of ghost point exchange
	550	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
[1053]	551	ENDIF
[1]	552
[1128]	553	CALL exchange_horiz( u_p, nbgp )
	554	CALL exchange_horiz( v_p, nbgp )
	555	CALL exchange_horiz( w_p, nbgp )
	556	CALL exchange_horiz( pt_p, nbgp )
	557	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	558	IF ( ocean ) THEN
	559	CALL exchange_horiz( sa_p, nbgp )
	560	CALL exchange_horiz( rho, nbgp )
	561	CALL exchange_horiz( prho, nbgp )
	562	ENDIF
	563	IF (humidity .OR. passive_scalar) THEN
	564	CALL exchange_horiz( q_p, nbgp )
[1179]	565	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
	566	precipitation ) THEN
[1128]	567	CALL exchange_horiz( qr_p, nbgp )
	568	CALL exchange_horiz( nr_p, nbgp )
	569	ENDIF
	570	ENDIF
	571	IF ( cloud_droplets ) THEN
	572	CALL exchange_horiz( ql, nbgp )
	573	CALL exchange_horiz( ql_c, nbgp )
	574	CALL exchange_horiz( ql_v, nbgp )
	575	CALL exchange_horiz( ql_vp, nbgp )
	576	ENDIF
	577	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	578
	579	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	580	on_device = .FALSE. ! to be removed after complete porting
	581	ELSE ! of ghost point exchange
	582	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	583	ENDIF
	584
	585	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	586
[1113]	587	ENDIF
	588
[1]	589	!
	590	!-- Boundary conditions for the prognostic quantities (except of the
	591	!-- velocities at the outflow in case of a non-cyclic lateral wall)
[1113]	592	CALL boundary_conds
[1]	593
	594	!
[1496]	595	!-- When using the land surface model:
	596	!-- 1) solve energy balance equation to calculate new skin temperature
	597	!-- 2) run soil model
	598	IF ( land_surface ) THEN
	599
	600	time_radiation = time_radiation + dt_3d
	601
	602	IF ( time_radiation >= dt_radiation ) THEN
	603
	604	CALL cpu_log( log_point(50), 'radiation', 'start' )
	605
	606	time_radiation = time_radiation - dt_radiation
[1551]	607	IF ( irad_scheme == 0 ) THEN
	608	CALL radiation_constant
	609	ELSEIF ( irad_scheme == 1 ) THEN
	610	CALL radiation_clearsky
	611	ELSEIF ( irad_scheme == 2 ) THEN
	612	CALL radiation_rrtm
	613	ENDIF
[1496]	614
	615	CALL cpu_log( log_point(50), 'radiation', 'stop' )
	616	ENDIF
	617
	618	CALL cpu_log( log_point(54), 'land_surface', 'start' )
	619
	620	CALL lsm_energy_balance
	621	CALL lsm_soil_model
	622
	623	CALL cpu_log( log_point(54), 'land_surface', 'stop' )
	624
	625	ENDIF
	626
	627	!
[73]	628	!-- Swap the time levels in preparation for the next time step.
	629	CALL swap_timelevel
	630
	631	!
[1]	632	!-- Temperature offset must be imposed at cyclic boundaries in x-direction
	633	!-- when a sloping surface is used
	634	IF ( sloping_surface ) THEN
[707]	635	IF ( nxl == 0 ) pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - &
	636	pt_slope_offset
	637	IF ( nxr == nx ) pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + &
	638	pt_slope_offset
[1]	639	ENDIF
	640
	641	!
[151]	642	!-- Impose a turbulent inflow using the recycling method
	643	IF ( turbulent_inflow ) CALL inflow_turbulence
	644
	645	!
[1]	646	!-- Impose a random perturbation on the horizontal velocity field
[106]	647	IF ( create_disturbances .AND. &
	648	( call_psolver_at_all_substeps .AND. &
[1]	649	intermediate_timestep_count == intermediate_timestep_count_max )&
[106]	650	.OR. ( .NOT. call_psolver_at_all_substeps .AND. &
	651	intermediate_timestep_count == 1 ) ) &
[1]	652	THEN
	653	time_disturb = time_disturb + dt_3d
	654	IF ( time_disturb >= dt_disturb ) THEN
[1111]	655	!$acc update host( u, v )
[1113]	656	IF ( numprocs == 1 ) on_device = .FALSE. ! workaround, remove later
[87]	657	IF ( hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit ) THEN
[75]	658	CALL disturb_field( nzb_u_inner, tend, u )
	659	CALL disturb_field( nzb_v_inner, tend, v )
[707]	660	ELSEIF ( .NOT. bc_lr_cyc .OR. .NOT. bc_ns_cyc ) THEN
[1]	661	!
	662	!-- Runs with a non-cyclic lateral wall need perturbations
	663	!-- near the inflow throughout the whole simulation
	664	dist_range = 1
[75]	665	CALL disturb_field( nzb_u_inner, tend, u )
	666	CALL disturb_field( nzb_v_inner, tend, v )
[1]	667	dist_range = 0
	668	ENDIF
[1113]	669	IF ( numprocs == 1 ) on_device = .TRUE. ! workaround, remove later
[1111]	670	!$acc update device( u, v )
[1]	671	time_disturb = time_disturb - dt_disturb
	672	ENDIF
	673	ENDIF
	674
	675	!
	676	!-- Reduce the velocity divergence via the equation for perturbation
	677	!-- pressure.
[106]	678	IF ( intermediate_timestep_count == 1 .OR. &
	679	call_psolver_at_all_substeps ) THEN
[1]	680	CALL pres
	681	ENDIF
	682
	683	!
	684	!-- If required, compute liquid water content
[1015]	685	IF ( cloud_physics ) THEN
	686	CALL calc_liquid_water_content
	687	!$acc update device( ql )
	688	ENDIF
[1115]	689	!
	690	!-- If required, compute virtual potential temperature
	691	IF ( humidity ) THEN
	692	CALL compute_vpt
	693	!$acc update device( vpt )
	694	ENDIF
[1]	695	!
	696	!-- Compute the diffusion quantities
	697	IF ( .NOT. constant_diffusion ) THEN
	698
	699	!
[1276]	700	!-- Determine surface fluxes shf and qsws and surface values
	701	!-- pt_surface and q_surface in dependence on data from external
	702	!-- file LSF_DATA respectively
	703	IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
	704	intermediate_timestep_count == intermediate_timestep_count_max )&
	705	THEN
	706	CALL ls_forcing_surf ( simulated_time )
	707	ENDIF
	708
	709	!
[1]	710	!-- First the vertical fluxes in the Prandtl layer are being computed
	711	IF ( prandtl_layer ) THEN
	712	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'start' )
	713	CALL prandtl_fluxes
	714	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'stop' )
	715	ENDIF
[1241]	716
[1]	717	!
	718	!-- Compute the diffusion coefficients
	719	CALL cpu_log( log_point(17), 'diffusivities', 'start' )
[75]	720	IF ( .NOT. humidity ) THEN
[97]	721	IF ( ocean ) THEN
[388]	722	CALL diffusivities( prho, prho_reference )
[97]	723	ELSE
	724	CALL diffusivities( pt, pt_reference )
	725	ENDIF
[1]	726	ELSE
[97]	727	CALL diffusivities( vpt, pt_reference )
[1]	728	ENDIF
	729	CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
	730
	731	ENDIF
	732
	733	ENDDO ! Intermediate step loop
	734
	735	!
	736	!-- Increase simulation time and output times
[1111]	737	nr_timesteps_this_run = nr_timesteps_this_run + 1
[291]	738	current_timestep_number = current_timestep_number + 1
	739	simulated_time = simulated_time + dt_3d
	740	simulated_time_chr = time_to_string( simulated_time )
	741	time_since_reference_point = simulated_time - coupling_start_time
	742
[1]	743	IF ( simulated_time >= skip_time_data_output_av ) THEN
	744	time_do_av = time_do_av + dt_3d
	745	ENDIF
	746	IF ( simulated_time >= skip_time_do2d_xy ) THEN
	747	time_do2d_xy = time_do2d_xy + dt_3d
	748	ENDIF
	749	IF ( simulated_time >= skip_time_do2d_xz ) THEN
	750	time_do2d_xz = time_do2d_xz + dt_3d
	751	ENDIF
	752	IF ( simulated_time >= skip_time_do2d_yz ) THEN
	753	time_do2d_yz = time_do2d_yz + dt_3d
	754	ENDIF
	755	IF ( simulated_time >= skip_time_do3d ) THEN
	756	time_do3d = time_do3d + dt_3d
	757	ENDIF
[410]	758	DO mid = 1, masks
	759	IF ( simulated_time >= skip_time_domask(mid) ) THEN
	760	time_domask(mid)= time_domask(mid) + dt_3d
	761	ENDIF
	762	ENDDO
[1]	763	time_dvrp = time_dvrp + dt_3d
	764	IF ( simulated_time >= skip_time_dosp ) THEN
	765	time_dosp = time_dosp + dt_3d
	766	ENDIF
	767	time_dots = time_dots + dt_3d
[849]	768	IF ( .NOT. first_call_lpm ) THEN
[1]	769	time_dopts = time_dopts + dt_3d
	770	ENDIF
	771	IF ( simulated_time >= skip_time_dopr ) THEN
	772	time_dopr = time_dopr + dt_3d
	773	ENDIF
	774	time_dopr_listing = time_dopr_listing + dt_3d
	775	time_run_control = time_run_control + dt_3d
	776
	777	!
[102]	778	!-- Data exchange between coupled models
[291]	779	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[102]	780	time_coupling = time_coupling + dt_3d
[343]	781
[108]	782	!
	783	!-- In case of model termination initiated by the local model
	784	!-- (terminate_coupled > 0), the coupler must be skipped because it would
	785	!-- cause an MPI intercomminucation hang.
	786	!-- If necessary, the coupler will be called at the beginning of the
	787	!-- next restart run.
	788	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
[102]	789	CALL surface_coupler
	790	time_coupling = time_coupling - dt_coupling
	791	ENDDO
	792	ENDIF
	793
	794	!
[46]	795	!-- Execute user-defined actions
	796	CALL user_actions( 'after_integration' )
	797
	798	!
[1]	799	!-- If Galilei transformation is used, determine the distance that the
	800	!-- model has moved so far
	801	IF ( galilei_transformation ) THEN
	802	advected_distance_x = advected_distance_x + u_gtrans * dt_3d
	803	advected_distance_y = advected_distance_y + v_gtrans * dt_3d
	804	ENDIF
	805
	806	!
	807	!-- Check, if restart is necessary (because cpu-time is expiring or
	808	!-- because it is forced by user) and set stop flag
[108]	809	!-- This call is skipped if the remote model has already initiated a restart.
	810	IF ( .NOT. terminate_run ) CALL check_for_restart
[1]	811
	812	!
	813	!-- Carry out statistical analysis and output at the requested output times.
	814	!-- The MOD function is used for calculating the output time counters (like
	815	!-- time_dopr) in order to regard a possible decrease of the output time
	816	!-- interval in case of restart runs
	817
	818	!
	819	!-- Set a flag indicating that so far no statistics have been created
	820	!-- for this time step
	821	flow_statistics_called = .FALSE.
	822
	823	!
	824	!-- If required, call flow_statistics for averaging in time
[1342]	825	IF ( averaging_interval_pr /= 0.0_wp .AND. &
[1]	826	( dt_dopr - time_dopr ) <= averaging_interval_pr .AND. &
	827	simulated_time >= skip_time_dopr ) THEN
	828	time_dopr_av = time_dopr_av + dt_3d
	829	IF ( time_dopr_av >= dt_averaging_input_pr ) THEN
	830	do_sum = .TRUE.
	831	time_dopr_av = MOD( time_dopr_av, &
	832	MAX( dt_averaging_input_pr, dt_3d ) )
	833	ENDIF
	834	ENDIF
	835	IF ( do_sum ) CALL flow_statistics
	836
	837	!
[410]	838	!-- Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
[1342]	839	IF ( averaging_interval /= 0.0_wp .AND. &
[1]	840	( dt_data_output_av - time_do_av ) <= averaging_interval .AND. &
	841	simulated_time >= skip_time_data_output_av ) &
	842	THEN
	843	time_do_sla = time_do_sla + dt_3d
	844	IF ( time_do_sla >= dt_averaging_input ) THEN
	845	CALL sum_up_3d_data
	846	average_count_3d = average_count_3d + 1
	847	time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
	848	ENDIF
	849	ENDIF
	850
	851	!
	852	!-- Calculate spectra for time averaging
[1342]	853	IF ( averaging_interval_sp /= 0.0_wp .AND. &
[1]	854	( dt_dosp - time_dosp ) <= averaging_interval_sp .AND. &
	855	simulated_time >= skip_time_dosp ) THEN
	856	time_dosp_av = time_dosp_av + dt_3d
	857	IF ( time_dosp_av >= dt_averaging_input_pr ) THEN
	858	CALL calc_spectra
	859	time_dosp_av = MOD( time_dosp_av, &
	860	MAX( dt_averaging_input_pr, dt_3d ) )
	861	ENDIF
	862	ENDIF
	863
	864	!
	865	!-- Computation and output of run control parameters.
[1001]	866	!-- This is also done whenever perturbations have been imposed
[1]	867	IF ( time_run_control >= dt_run_control .OR. &
[1001]	868	timestep_scheme(1:5) /= 'runge' .OR. disturbance_created ) &
[1]	869	THEN
	870	CALL run_control
	871	IF ( time_run_control >= dt_run_control ) THEN
	872	time_run_control = MOD( time_run_control, &
	873	MAX( dt_run_control, dt_3d ) )
	874	ENDIF
	875	ENDIF
	876
	877	!
	878	!-- Profile output (ASCII) on file
	879	IF ( time_dopr_listing >= dt_dopr_listing ) THEN
	880	CALL print_1d
	881	time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, &
	882	dt_3d ) )
	883	ENDIF
	884
	885	!
	886	!-- Graphic output for PROFIL
	887	IF ( time_dopr >= dt_dopr ) THEN
	888	IF ( dopr_n /= 0 ) CALL data_output_profiles
	889	time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
[1342]	890	time_dopr_av = 0.0_wp ! due to averaging (see above)
[1]	891	ENDIF
	892
	893	!
	894	!-- Graphic output for time series
	895	IF ( time_dots >= dt_dots ) THEN
[48]	896	CALL data_output_tseries
[1]	897	time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
	898	ENDIF
	899
	900	!
	901	!-- Output of spectra (formatted for use with PROFIL), in case of no
	902	!-- time averaging, spectra has to be calculated before
	903	IF ( time_dosp >= dt_dosp ) THEN
	904	IF ( average_count_sp == 0 ) CALL calc_spectra
	905	CALL data_output_spectra
	906	time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
	907	ENDIF
	908
	909	!
	910	!-- 2d-data output (cross-sections)
	911	IF ( time_do2d_xy >= dt_do2d_xy ) THEN
	912	CALL data_output_2d( 'xy', 0 )
	913	time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
	914	ENDIF
	915	IF ( time_do2d_xz >= dt_do2d_xz ) THEN
	916	CALL data_output_2d( 'xz', 0 )
	917	time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
	918	ENDIF
	919	IF ( time_do2d_yz >= dt_do2d_yz ) THEN
	920	CALL data_output_2d( 'yz', 0 )
	921	time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
	922	ENDIF
	923
	924	!
	925	!-- 3d-data output (volume data)
	926	IF ( time_do3d >= dt_do3d ) THEN
	927	CALL data_output_3d( 0 )
	928	time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
	929	ENDIF
	930
	931	!
[410]	932	!-- masked data output
[1308]	933	!-- Parallel netcdf output is not tested so far for masked data, hence
	934	!-- netcdf_data_format is switched back to non-paralell output.
	935	netcdf_data_format_save = netcdf_data_format
	936	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
	937	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
[410]	938	DO mid = 1, masks
	939	IF ( time_domask(mid) >= dt_domask(mid) ) THEN
	940	CALL data_output_mask( 0 )
	941	time_domask(mid) = MOD( time_domask(mid), &
	942	MAX( dt_domask(mid), dt_3d ) )
	943	ENDIF
	944	ENDDO
[1308]	945	netcdf_data_format = netcdf_data_format_save
[410]	946
	947	!
	948	!-- Output of time-averaged 2d/3d/masked data
[1]	949	IF ( time_do_av >= dt_data_output_av ) THEN
	950	CALL average_3d_data
	951	CALL data_output_2d( 'xy', 1 )
	952	CALL data_output_2d( 'xz', 1 )
	953	CALL data_output_2d( 'yz', 1 )
	954	CALL data_output_3d( 1 )
[1308]	955	!-- Parallel netcdf output is not tested so far for masked data, hence
	956	!-- netcdf_data_format is switched back to non-paralell output.
	957	netcdf_data_format_save = netcdf_data_format
	958	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
	959	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
[410]	960	DO mid = 1, masks
	961	CALL data_output_mask( 1 )
	962	ENDDO
[1308]	963	netcdf_data_format = netcdf_data_format_save
[1]	964	time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
	965	ENDIF
	966
	967	!
	968	!-- Output of particle time series
[253]	969	IF ( particle_advection ) THEN
	970	IF ( time_dopts >= dt_dopts .OR. &
	971	( simulated_time >= particle_advection_start .AND. &
[849]	972	first_call_lpm ) ) THEN
[253]	973	CALL data_output_ptseries
	974	time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
	975	ENDIF
[1]	976	ENDIF
	977
	978	!
	979	!-- Output of dvrp-graphics (isosurface, particles, slicer)
	980	#if defined( __dvrp_graphics )
	981	CALL DVRP_LOG_EVENT( -2, current_timestep_number-1 )
	982	#endif
	983	IF ( time_dvrp >= dt_dvrp ) THEN
	984	CALL data_output_dvrp
	985	time_dvrp = MOD( time_dvrp, MAX( dt_dvrp, dt_3d ) )
	986	ENDIF
	987	#if defined( __dvrp_graphics )
	988	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	989	#endif
	990
	991	!
	992	!-- If required, set the heat flux for the next time step at a random value
	993	IF ( constant_heatflux .AND. random_heatflux ) CALL disturb_heatflux
	994
	995	!
	996	!-- Execute user-defined actions
	997	CALL user_actions( 'after_timestep' )
	998
[1402]	999	!
	1000	!-- Output elapsed simulated time in form of a progress bar on stdout
	1001	IF ( myid == 0 ) CALL output_progress_bar
	1002
[1]	1003	CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
	1004
[667]	1005
[1]	1006	ENDDO ! time loop
	1007
[1402]	1008	IF ( myid == 0 ) CALL finish_progress_bar
	1009
[1]	1010	#if defined( __dvrp_graphics )
	1011	CALL DVRP_LOG_EVENT( -2, current_timestep_number )
	1012	#endif
	1013
[1402]	1014	CALL location_message( 'finished time-stepping', .TRUE. )
[1384]	1015
[1]	1016	END SUBROUTINE time_integration

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