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source: palm/trunk/SOURCE/time_integration.f90 @ 1517

Last change on this file since 1517 was 1497, 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	!
[1497]	23	!
[1366]	24	! Former revisions:
	25	! -----------------
	26	! $Id: time_integration.f90 1497 2014-12-02 17:28:07Z hoffmann $
	27	!
[1497]	28	! 1496 2014-12-02 17:25:50Z maronga
	29	! Added calls for the land surface model and radiation scheme
	30	!
[1403]	31	! 1402 2014-05-09 14:25:13Z raasch
	32	! location messages modified
	33	!
[1385]	34	! 1384 2014-05-02 14:31:06Z raasch
	35	! location messages added
	36	!
[1381]	37	! 1380 2014-04-28 12:40:45Z heinze
	38	! CALL of nudge_ref added
	39	! bc_pt_t_val and bc_q_t_val are updated in case nudging is used
	40	!
[1366]	41	! 1365 2014-04-22 15:03:56Z boeske
[1365]	42	! Reset sums_ls_l to zero at each timestep
	43	! +sums_ls_l
	44	! Calculation of reference state (previously in subroutine calc_mean_profile)
	45
[1343]	46	! 1342 2014-03-26 17:04:47Z kanani
	47	! REAL constants defined as wp-kind
	48	!
[1321]	49	! 1320 2014-03-20 08:40:49Z raasch
[1320]	50	! ONLY-attribute added to USE-statements,
	51	! kind-parameters added to all INTEGER and REAL declaration statements,
	52	! kinds are defined in new module kinds,
	53	! old module precision_kind is removed,
	54	! revision history before 2012 removed,
	55	! comment fields (!:) to be used for variable explanations added to
	56	! all variable declaration statements
[1319]	57	! 1318 2014-03-17 13:35:16Z raasch
	58	! module interfaces removed
	59	!
[1309]	60	! 1308 2014-03-13 14:58:42Z fricke
	61	! +netcdf_data_format_save
	62	! For masked data, parallel netcdf output is not tested so far, hence
	63	! netcdf_data_format is switched back to non-paralell output.
	64	!
[1277]	65	! 1276 2014-01-15 13:40:41Z heinze
	66	! Use LSF_DATA also in case of Dirichlet bottom boundary condition for scalars
	67	!
[1258]	68	! 1257 2013-11-08 15:18:40Z raasch
	69	! acc-update-host directive for timestep removed
	70	!
[1242]	71	! 1241 2013-10-30 11:36:58Z heinze
	72	! Generalize calc_mean_profile for wider use
	73	! Determine shf and qsws in dependence on data from LSF_DATA
	74	! Determine ug and vg in dependence on data from LSF_DATA
[1222]	75	! 1221 2013-09-10 08:59:13Z raasch
	76	! host update of arrays before timestep is called
	77	!
[1182]	78	! 1179 2013-06-14 05:57:58Z raasch
	79	! mean profiles for reference state are only calculated if required,
	80	! small bugfix for background communication
	81	!
[1172]	82	! 1171 2013-05-30 11:27:45Z raasch
	83	! split of prognostic_equations deactivated (comment lines), for the time being
	84	!
[1132]	85	! 1128 2013-04-12 06:19:32Z raasch
[1128]	86	! asynchronous transfer of ghost point data realized for acc-optimized version:
	87	! prognostic_equations are first called two times for those points required for
	88	! the left-right and north-south exchange, respectively, and then for the
	89	! remaining points,
	90	! those parts requiring global communication moved from prognostic_equations to
	91	! here
[392]	92	!
[1116]	93	! 1115 2013-03-26 18:16:16Z hoffmann
	94	! calculation of qr and nr is restricted to precipitation
	95	!
[1114]	96	! 1113 2013-03-10 02:48:14Z raasch
	97	! GPU-porting of boundary conditions,
	98	! openACC directives updated
	99	! formal parameter removed from routine boundary_conds
	100	!
[1112]	101	! 1111 2013-03-08 23:54:10Z raasch
	102	! +internal timestep counter for cpu statistics added,
	103	! openACC directives updated
	104	!
[1093]	105	! 1092 2013-02-02 11:24:22Z raasch
	106	! unused variables removed
	107	!
[1066]	108	! 1065 2012-11-22 17:42:36Z hoffmann
	109	! exchange of diss (dissipation rate) in case of turbulence = .TRUE. added
	110	!
[1054]	111	! 1053 2012-11-13 17:11:03Z hoffmann
	112	! exchange of ghost points for nr, qr added
	113	!
[1037]	114	! 1036 2012-10-22 13:43:42Z raasch
	115	! code put under GPL (PALM 3.9)
	116	!
[1020]	117	! 1019 2012-09-28 06:46:45Z raasch
	118	! non-optimized version of prognostic_equations removed
	119	!
[1017]	120	! 1015 2012-09-27 09:23:24Z raasch
	121	! +call of prognostic_equations_acc
	122	!
[1002]	123	! 1001 2012-09-13 14:08:46Z raasch
	124	! all actions concerning leapfrog- and upstream-spline-scheme removed
	125	!
[850]	126	! 849 2012-03-15 10:35:09Z raasch
	127	! advec_particles renamed lpm, first_call_advec_particles renamed first_call_lpm
	128	!
[826]	129	! 825 2012-02-19 03:03:44Z raasch
	130	! wang_collision_kernel renamed wang_kernel
	131	!
[1]	132	! Revision 1.1 1997/08/11 06:19:04 raasch
	133	! Initial revision
	134	!
	135	!
	136	! Description:
	137	! ------------
	138	! Integration in time of the model equations, statistical analysis and graphic
	139	! output
	140	!------------------------------------------------------------------------------!
	141
[1320]	142	USE advec_ws, &
	143	ONLY: ws_statistics
	144
	145	USE arrays_3d, &
[1380]	146	ONLY: diss, dzu, e_p, nr_p, prho, pt, pt_p, pt_init, q_init, q, ql, &
	147	ql_c, ql_v, ql_vp, qr_p, q_p, ref_state, rho, sa_p, tend, u, &
	148	u_p, v, vpt, v_p, w_p
[1320]	149
[1365]	150	USE calc_mean_profile_mod, &
[1320]	151	ONLY: calc_mean_profile
	152
	153	USE control_parameters, &
	154	ONLY: advected_distance_x, advected_distance_y, average_count_3d, &
	155	average_count_sp, averaging_interval, averaging_interval_pr, &
[1380]	156	averaging_interval_sp, bc_lr_cyc, bc_ns_cyc, bc_pt_t_val, &
	157	bc_q_t_val, call_psolver_at_all_substeps, cloud_droplets, &
	158	cloud_physics, constant_heatflux, create_disturbances, dopr_n, &
[1320]	159	constant_diffusion, coupling_mode, coupling_start_time, &
	160	current_timestep_number, disturbance_created, &
	161	disturbance_energy_limit, dist_range, do_sum, dt_3d, &
	162	dt_averaging_input, dt_averaging_input_pr, dt_coupling, &
	163	dt_data_output_av, dt_disturb, dt_do2d_xy, dt_do2d_xz, &
	164	dt_do2d_yz, dt_do3d, dt_domask,dt_dopts, dt_dopr, &
	165	dt_dopr_listing, dt_dosp, dt_dots, dt_dvrp, dt_run_control, &
	166	end_time, first_call_lpm, galilei_transformation, humidity, &
	167	icloud_scheme, intermediate_timestep_count, &
	168	intermediate_timestep_count_max, large_scale_forcing, &
	169	loop_optimization, lsf_surf, lsf_vert, masks, mid, &
[1365]	170	netcdf_data_format, neutral, nr_timesteps_this_run, nudging, &
	171	ocean, on_device, passive_scalar, prandtl_layer, precipitation, &
[1320]	172	prho_reference, pt_reference, pt_slope_offset, random_heatflux, &
	173	run_coupled, simulated_time, simulated_time_chr, &
	174	skip_time_do2d_xy, skip_time_do2d_xz, skip_time_do2d_yz, &
	175	skip_time_do3d, skip_time_domask, skip_time_dopr, &
	176	skip_time_dosp, skip_time_data_output_av, sloping_surface, &
	177	stop_dt, terminate_coupled, terminate_run, timestep_scheme, &
	178	time_coupling, time_do2d_xy, time_do2d_xz, time_do2d_yz, &
	179	time_do3d, time_domask, time_dopr, time_dopr_av, &
	180	time_dopr_listing, time_dopts, time_dosp, time_dosp_av, &
	181	time_dots, time_do_av, time_do_sla, time_disturb, time_dvrp, &
[1496]	182	time_run_control, time_since_reference_point, &
	183	turbulence, &
[1320]	184	turbulent_inflow, use_initial_profile_as_reference, &
	185	use_single_reference_value, u_gtrans, v_gtrans, ws_scheme_mom, &
	186	ws_scheme_sca
	187
	188	USE cpulog, &
	189	ONLY: cpu_log, log_point, log_point_s
	190
	191	USE indices, &
	192	ONLY: i_left, i_right, j_north, j_south, nbgp, nx, nxl, nxlg, nxr, &
[1380]	193	nxrg, nyn, nys, nzb, nzt, nzb_u_inner, nzb_v_inner
[1320]	194
	195	USE interaction_droplets_ptq_mod, &
	196	ONLY: interaction_droplets_ptq
	197
	198	USE kinds
	199
[1496]	200	USE land_surface_model_mod, &
	201	ONLY: land_surface, lsm_energy_balance, lsm_soil_model
	202
[1320]	203	USE ls_forcing_mod, &
	204	ONLY: ls_forcing_surf, ls_forcing_vert
	205
[1365]	206	USE nudge_mod, &
[1380]	207	ONLY: calc_tnudge, nudge_ref
[1365]	208
[1320]	209	USE particle_attributes, &
	210	ONLY: particle_advection, particle_advection_start, wang_kernel
	211
[1]	212	USE pegrid
	213
[1320]	214	USE production_e_mod, &
	215	ONLY: production_e_init
	216
[1402]	217	USE progress_bar, &
	218	ONLY: finish_progress_bar, output_progress_bar
	219
[1320]	220	USE prognostic_equations_mod, &
	221	ONLY: prognostic_equations_acc, prognostic_equations_cache, &
	222	prognostic_equations_vector
	223
[1496]	224	USE radiation_model_mod, &
	225	ONLY: dt_radiation, lsm_radiation, radiation, time_radiation
	226
[1320]	227	USE statistics, &
[1365]	228	ONLY: flow_statistics_called, hom, pr_palm, sums_ls_l
[1320]	229
	230	USE user_actions_mod, &
	231	ONLY: user_actions
	232
[1]	233	IMPLICIT NONE
	234
[1320]	235	CHARACTER (LEN=9) :: time_to_string !:
[1]	236
[1320]	237	INTEGER(iwp) :: netcdf_data_format_save !:
	238
[1]	239	!
	240	!-- At the beginning of a simulation determine the time step as well as
	241	!-- determine and print out the run control parameters
[1342]	242	IF ( simulated_time == 0.0_wp ) CALL timestep
[667]	243
[1]	244	CALL run_control
	245
[667]	246
[108]	247	!
	248	!-- Data exchange between coupled models in case that a call has been omitted
	249	!-- at the end of the previous run of a job chain.
[291]	250	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[108]	251	!
	252	!-- In case of model termination initiated by the local model the coupler
	253	!-- must not be called because this would again cause an MPI hang.
	254	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
	255	CALL surface_coupler
	256	time_coupling = time_coupling - dt_coupling
	257	ENDDO
[1342]	258	IF (time_coupling == 0.0_wp .AND. time_since_reference_point < dt_coupling)&
[348]	259	THEN
	260	time_coupling = time_since_reference_point
	261	ENDIF
[108]	262	ENDIF
	263
	264
[1]	265	#if defined( __dvrp_graphics )
	266	!
	267	!-- Time measurement with dvrp software
	268	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	269	#endif
	270
[1402]	271	CALL location_message( 'start with time-stepping', .TRUE. )
[1]	272	!
	273	!-- Start of the time loop
	274	DO WHILE ( simulated_time < end_time .AND. .NOT. stop_dt .AND. &
	275	.NOT. terminate_run )
	276
	277	CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
[1221]	278
[1]	279	!
	280	!-- Determine size of next time step
[1342]	281	IF ( simulated_time /= 0.0_wp ) THEN
[1221]	282	CALL timestep
	283	ENDIF
	284
[1]	285	!
[1241]	286	!-- Determine ug, vg and w_subs in dependence on data from external file
	287	!-- LSF_DATA
[1365]	288	IF ( large_scale_forcing .AND. lsf_vert ) THEN
[1241]	289	CALL ls_forcing_vert ( simulated_time )
[1365]	290	sums_ls_l = 0.0_wp
[1241]	291	ENDIF
	292
	293	!
[1380]	294	!-- Set pt_init and q_init to the current profiles taken from
	295	!-- NUDGING_DATA
	296	IF ( nudging ) THEN
	297	CALL nudge_ref ( simulated_time )
	298	!
	299	!-- Store temperature gradient at the top boundary for possible Neumann
	300	!-- boundary condition
	301	bc_pt_t_val = ( pt_init(nzt+1) - pt_init(nzt) ) / dzu(nzt+1)
	302	bc_q_t_val = ( q_init(nzt+1) - q_init(nzt) ) / dzu(nzt+1)
	303	ENDIF
	304
	305	!
[1]	306	!-- Execute the user-defined actions
	307	CALL user_actions( 'before_timestep' )
	308
	309	!
	310	!-- Start of intermediate step loop
	311	intermediate_timestep_count = 0
	312	DO WHILE ( intermediate_timestep_count < &
	313	intermediate_timestep_count_max )
	314
	315	intermediate_timestep_count = intermediate_timestep_count + 1
	316
	317	!
	318	!-- Set the steering factors for the prognostic equations which depend
	319	!-- on the timestep scheme
	320	CALL timestep_scheme_steering
	321
	322	!
[1128]	323	!-- Calculate those variables needed in the tendency terms which need
	324	!-- global communication
[1179]	325	IF ( .NOT. use_single_reference_value .AND. &
	326	.NOT. use_initial_profile_as_reference ) THEN
	327	!
	328	!-- Horizontally averaged profiles to be used as reference state in
	329	!-- buoyancy terms (WARNING: only the respective last call of
	330	!-- calc_mean_profile defines the reference state!)
[1365]	331	IF ( .NOT. neutral ) THEN
	332	CALL calc_mean_profile( pt, 4 )
	333	ref_state(:) = hom(:,1,4,0) ! this is used in the buoyancy term
	334	ENDIF
	335	IF ( ocean ) THEN
	336	CALL calc_mean_profile( rho, 64 )
	337	ref_state(:) = hom(:,1,64,0)
	338	ENDIF
	339	IF ( humidity ) THEN
	340	CALL calc_mean_profile( vpt, 44 )
	341	ref_state(:) = hom(:,1,44,0)
	342	ENDIF
	343
[1179]	344	ENDIF
	345
[1128]	346	IF ( .NOT. constant_diffusion ) CALL production_e_init
	347	IF ( ( ws_scheme_mom .OR. ws_scheme_sca ) .AND. &
	348	intermediate_timestep_count == 1 ) CALL ws_statistics
[1365]	349	!
	350	!-- In case of nudging calculate current nudging time scale and horizontal
[1380]	351	!-- means of u, v, pt and q
[1365]	352	IF ( nudging ) THEN
	353	CALL calc_tnudge( simulated_time )
	354	CALL calc_mean_profile( u, 1 )
	355	CALL calc_mean_profile( v, 2 )
	356	CALL calc_mean_profile( pt, 4 )
	357	CALL calc_mean_profile( q, 41 )
	358	ENDIF
[1128]	359
	360	!
[1]	361	!-- Solve the prognostic equations. A fast cache optimized version with
	362	!-- only one single loop is used in case of Piascek-Williams advection
	363	!-- scheme. NEC vector machines use a different version, because
	364	!-- in the other versions a good vectorization is prohibited due to
	365	!-- inlining problems.
[1019]	366	IF ( loop_optimization == 'cache' ) THEN
	367	CALL prognostic_equations_cache
	368	ELSEIF ( loop_optimization == 'vector' ) THEN
[63]	369	CALL prognostic_equations_vector
[1015]	370	ELSEIF ( loop_optimization == 'acc' ) THEN
[1171]	371	i_left = nxl; i_right = nxr
	372	j_south = nys; j_north = nyn
	373	CALL prognostic_equations_acc
	374
	375	! i_left = nxl; i_right = nxl+nbgp-1
[1128]	376	! j_south = nys; j_north = nyn
	377	! CALL prognostic_equations_acc
[1171]	378	! i_left = nxr-nbgp+1; i_right = nxr
	379	! j_south = nys; j_north = nyn
	380	! CALL prognostic_equations_acc
[1128]	381
	382	!
	383	!-- Exchange of ghost points (lateral boundary conditions)
	384	IF ( background_communication ) THEN
	385
	386	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
	387
	388	send_receive = 'lr'
	389	sendrecv_in_background = .TRUE.
	390	req = 0
	391	req_count = 0
	392
	393	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	394	on_device = .TRUE. ! to be removed after complete porting
	395	ELSE ! of ghost point exchange
	396	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	397	ENDIF
	398
	399	CALL exchange_horiz( u_p, nbgp )
	400	CALL exchange_horiz( v_p, nbgp )
	401	CALL exchange_horiz( w_p, nbgp )
	402	CALL exchange_horiz( pt_p, nbgp )
	403	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	404	IF ( ocean ) THEN
	405	CALL exchange_horiz( sa_p, nbgp )
	406	CALL exchange_horiz( rho, nbgp )
	407	CALL exchange_horiz( prho, nbgp )
	408	ENDIF
	409	IF (humidity .OR. passive_scalar) THEN
	410	CALL exchange_horiz( q_p, nbgp )
	411	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
	412	CALL exchange_horiz( qr_p, nbgp )
	413	CALL exchange_horiz( nr_p, nbgp )
	414	ENDIF
	415	ENDIF
	416	IF ( cloud_droplets ) THEN
	417	CALL exchange_horiz( ql, nbgp )
	418	CALL exchange_horiz( ql_c, nbgp )
	419	CALL exchange_horiz( ql_v, nbgp )
	420	CALL exchange_horiz( ql_vp, nbgp )
	421	ENDIF
	422	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	423
	424	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	425	on_device = .FALSE. ! to be removed after complete porting
	426	ELSE ! of ghost point exchange
	427	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	428	ENDIF
	429
	430	sendrecv_in_background = .FALSE.
	431
	432	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'pause' )
	433
	434	ENDIF
	435
[1171]	436	! i_left = nxl+nbgp; i_right = nxr-nbgp
	437	! j_south = nys; j_north = nys+nbgp-1
	438	! CALL prognostic_equations_acc
	439	! i_left = nxl+nbgp; i_right = nxr-nbgp
	440	! j_south = nyn-nbgp+1; j_north = nyn
	441	! CALL prognostic_equations_acc
[1128]	442
	443	IF ( background_communication ) THEN
	444	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'start' )
	445	#if defined( __parallel )
	446	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	447	#endif
	448	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'pause' )
	449
	450	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'continue' )
	451
	452	send_receive = 'ns'
	453	sendrecv_in_background = .TRUE.
	454	req = 0
	455	req_count = 0
	456
	457	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	458	on_device = .TRUE. ! to be removed after complete porting
	459	ELSE ! of ghost point exchange
	460	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	461	ENDIF
	462
	463	CALL exchange_horiz( u_p, nbgp )
	464	CALL exchange_horiz( v_p, nbgp )
	465	CALL exchange_horiz( w_p, nbgp )
	466	CALL exchange_horiz( pt_p, nbgp )
	467	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	468	IF ( ocean ) THEN
	469	CALL exchange_horiz( sa_p, nbgp )
	470	CALL exchange_horiz( rho, nbgp )
	471	CALL exchange_horiz( prho, nbgp )
	472	ENDIF
	473	IF (humidity .OR. passive_scalar) THEN
	474	CALL exchange_horiz( q_p, nbgp )
	475	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
	476	CALL exchange_horiz( qr_p, nbgp )
	477	CALL exchange_horiz( nr_p, nbgp )
	478	ENDIF
	479	ENDIF
	480	IF ( cloud_droplets ) THEN
	481	CALL exchange_horiz( ql, nbgp )
	482	CALL exchange_horiz( ql_c, nbgp )
	483	CALL exchange_horiz( ql_v, nbgp )
	484	CALL exchange_horiz( ql_vp, nbgp )
	485	ENDIF
	486	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	487
	488	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	489	on_device = .FALSE. ! to be removed after complete porting
	490	ELSE ! of ghost point exchange
	491	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	492	ENDIF
	493
	494	sendrecv_in_background = .FALSE.
	495
	496	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	497
	498	ENDIF
	499
[1171]	500	! i_left = nxl+nbgp; i_right = nxr-nbgp
	501	! j_south = nys+nbgp; j_north = nyn-nbgp
	502	! CALL prognostic_equations_acc
[1128]	503
	504	IF ( background_communication ) THEN
	505	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'continue' )
	506	#if defined( __parallel )
	507	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	508	#endif
	509	send_receive = 'al'
	510	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'stop' )
	511	ENDIF
	512
[1]	513	ENDIF
	514
	515	!
[849]	516	!-- Particle transport/physics with the Lagrangian particle model
	517	!-- (only once during intermediate steps, because it uses an Euler-step)
[1128]	518	!-- ### particle model should be moved before prognostic_equations, in order
	519	!-- to regard droplet interactions directly
[63]	520	IF ( particle_advection .AND. &
	521	simulated_time >= particle_advection_start .AND. &
[1]	522	intermediate_timestep_count == 1 ) THEN
[849]	523	CALL lpm
	524	first_call_lpm = .FALSE.
[1]	525	ENDIF
	526
	527	!
	528	!-- Interaction of droplets with temperature and specific humidity.
	529	!-- Droplet condensation and evaporation is calculated within
	530	!-- advec_particles.
	531	IF ( cloud_droplets .AND. &
	532	intermediate_timestep_count == intermediate_timestep_count_max )&
	533	THEN
	534	CALL interaction_droplets_ptq
	535	ENDIF
	536
	537	!
	538	!-- Exchange of ghost points (lateral boundary conditions)
[1128]	539	IF ( .NOT. background_communication ) THEN
[1113]	540
[1128]	541	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
[1113]	542
[1128]	543	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	544	on_device = .TRUE. ! to be removed after complete porting
	545	ELSE ! of ghost point exchange
	546	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
[1053]	547	ENDIF
[1]	548
[1128]	549	CALL exchange_horiz( u_p, nbgp )
	550	CALL exchange_horiz( v_p, nbgp )
	551	CALL exchange_horiz( w_p, nbgp )
	552	CALL exchange_horiz( pt_p, nbgp )
	553	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	554	IF ( ocean ) THEN
	555	CALL exchange_horiz( sa_p, nbgp )
	556	CALL exchange_horiz( rho, nbgp )
	557	CALL exchange_horiz( prho, nbgp )
	558	ENDIF
	559	IF (humidity .OR. passive_scalar) THEN
	560	CALL exchange_horiz( q_p, nbgp )
[1179]	561	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
	562	precipitation ) THEN
[1128]	563	CALL exchange_horiz( qr_p, nbgp )
	564	CALL exchange_horiz( nr_p, nbgp )
	565	ENDIF
	566	ENDIF
	567	IF ( cloud_droplets ) THEN
	568	CALL exchange_horiz( ql, nbgp )
	569	CALL exchange_horiz( ql_c, nbgp )
	570	CALL exchange_horiz( ql_v, nbgp )
	571	CALL exchange_horiz( ql_vp, nbgp )
	572	ENDIF
	573	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	574
	575	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	576	on_device = .FALSE. ! to be removed after complete porting
	577	ELSE ! of ghost point exchange
	578	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	579	ENDIF
	580
	581	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	582
[1113]	583	ENDIF
	584
[1]	585	!
	586	!-- Boundary conditions for the prognostic quantities (except of the
	587	!-- velocities at the outflow in case of a non-cyclic lateral wall)
[1113]	588	CALL boundary_conds
[1]	589
	590	!
[1496]	591	!-- When using the land surface model:
	592	!-- 1) solve energy balance equation to calculate new skin temperature
	593	!-- 2) run soil model
	594	IF ( land_surface ) THEN
	595
	596	time_radiation = time_radiation + dt_3d
	597
	598	IF ( time_radiation >= dt_radiation ) THEN
	599
	600	CALL cpu_log( log_point(50), 'radiation', 'start' )
	601
	602	time_radiation = time_radiation - dt_radiation
	603	CALL lsm_radiation
	604
	605	CALL cpu_log( log_point(50), 'radiation', 'stop' )
	606	ENDIF
	607
	608	CALL cpu_log( log_point(54), 'land_surface', 'start' )
	609
	610	CALL lsm_energy_balance
	611	CALL lsm_soil_model
	612
	613	CALL cpu_log( log_point(54), 'land_surface', 'stop' )
	614
	615	ENDIF
	616
	617	!
[73]	618	!-- Swap the time levels in preparation for the next time step.
	619	CALL swap_timelevel
	620
	621	!
[1]	622	!-- Temperature offset must be imposed at cyclic boundaries in x-direction
	623	!-- when a sloping surface is used
	624	IF ( sloping_surface ) THEN
[707]	625	IF ( nxl == 0 ) pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - &
	626	pt_slope_offset
	627	IF ( nxr == nx ) pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + &
	628	pt_slope_offset
[1]	629	ENDIF
	630
	631	!
[151]	632	!-- Impose a turbulent inflow using the recycling method
	633	IF ( turbulent_inflow ) CALL inflow_turbulence
	634
	635	!
[1]	636	!-- Impose a random perturbation on the horizontal velocity field
[106]	637	IF ( create_disturbances .AND. &
	638	( call_psolver_at_all_substeps .AND. &
[1]	639	intermediate_timestep_count == intermediate_timestep_count_max )&
[106]	640	.OR. ( .NOT. call_psolver_at_all_substeps .AND. &
	641	intermediate_timestep_count == 1 ) ) &
[1]	642	THEN
	643	time_disturb = time_disturb + dt_3d
	644	IF ( time_disturb >= dt_disturb ) THEN
[1111]	645	!$acc update host( u, v )
[1113]	646	IF ( numprocs == 1 ) on_device = .FALSE. ! workaround, remove later
[87]	647	IF ( hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit ) THEN
[75]	648	CALL disturb_field( nzb_u_inner, tend, u )
	649	CALL disturb_field( nzb_v_inner, tend, v )
[707]	650	ELSEIF ( .NOT. bc_lr_cyc .OR. .NOT. bc_ns_cyc ) THEN
[1]	651	!
	652	!-- Runs with a non-cyclic lateral wall need perturbations
	653	!-- near the inflow throughout the whole simulation
	654	dist_range = 1
[75]	655	CALL disturb_field( nzb_u_inner, tend, u )
	656	CALL disturb_field( nzb_v_inner, tend, v )
[1]	657	dist_range = 0
	658	ENDIF
[1113]	659	IF ( numprocs == 1 ) on_device = .TRUE. ! workaround, remove later
[1111]	660	!$acc update device( u, v )
[1]	661	time_disturb = time_disturb - dt_disturb
	662	ENDIF
	663	ENDIF
	664
	665	!
	666	!-- Reduce the velocity divergence via the equation for perturbation
	667	!-- pressure.
[106]	668	IF ( intermediate_timestep_count == 1 .OR. &
	669	call_psolver_at_all_substeps ) THEN
[1]	670	CALL pres
	671	ENDIF
	672
	673	!
	674	!-- If required, compute liquid water content
[1015]	675	IF ( cloud_physics ) THEN
	676	CALL calc_liquid_water_content
	677	!$acc update device( ql )
	678	ENDIF
[1115]	679	!
	680	!-- If required, compute virtual potential temperature
	681	IF ( humidity ) THEN
	682	CALL compute_vpt
	683	!$acc update device( vpt )
	684	ENDIF
[1]	685	!
	686	!-- Compute the diffusion quantities
	687	IF ( .NOT. constant_diffusion ) THEN
	688
	689	!
[1276]	690	!-- Determine surface fluxes shf and qsws and surface values
	691	!-- pt_surface and q_surface in dependence on data from external
	692	!-- file LSF_DATA respectively
	693	IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
	694	intermediate_timestep_count == intermediate_timestep_count_max )&
	695	THEN
	696	CALL ls_forcing_surf ( simulated_time )
	697	ENDIF
	698
	699	!
[1]	700	!-- First the vertical fluxes in the Prandtl layer are being computed
	701	IF ( prandtl_layer ) THEN
	702	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'start' )
	703	CALL prandtl_fluxes
	704	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'stop' )
	705	ENDIF
[1241]	706
[1]	707	!
	708	!-- Compute the diffusion coefficients
	709	CALL cpu_log( log_point(17), 'diffusivities', 'start' )
[75]	710	IF ( .NOT. humidity ) THEN
[97]	711	IF ( ocean ) THEN
[388]	712	CALL diffusivities( prho, prho_reference )
[97]	713	ELSE
	714	CALL diffusivities( pt, pt_reference )
	715	ENDIF
[1]	716	ELSE
[97]	717	CALL diffusivities( vpt, pt_reference )
[1]	718	ENDIF
	719	CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
	720
	721	ENDIF
	722
	723	ENDDO ! Intermediate step loop
	724
	725	!
	726	!-- Increase simulation time and output times
[1111]	727	nr_timesteps_this_run = nr_timesteps_this_run + 1
[291]	728	current_timestep_number = current_timestep_number + 1
	729	simulated_time = simulated_time + dt_3d
	730	simulated_time_chr = time_to_string( simulated_time )
	731	time_since_reference_point = simulated_time - coupling_start_time
	732
[1]	733	IF ( simulated_time >= skip_time_data_output_av ) THEN
	734	time_do_av = time_do_av + dt_3d
	735	ENDIF
	736	IF ( simulated_time >= skip_time_do2d_xy ) THEN
	737	time_do2d_xy = time_do2d_xy + dt_3d
	738	ENDIF
	739	IF ( simulated_time >= skip_time_do2d_xz ) THEN
	740	time_do2d_xz = time_do2d_xz + dt_3d
	741	ENDIF
	742	IF ( simulated_time >= skip_time_do2d_yz ) THEN
	743	time_do2d_yz = time_do2d_yz + dt_3d
	744	ENDIF
	745	IF ( simulated_time >= skip_time_do3d ) THEN
	746	time_do3d = time_do3d + dt_3d
	747	ENDIF
[410]	748	DO mid = 1, masks
	749	IF ( simulated_time >= skip_time_domask(mid) ) THEN
	750	time_domask(mid)= time_domask(mid) + dt_3d
	751	ENDIF
	752	ENDDO
[1]	753	time_dvrp = time_dvrp + dt_3d
	754	IF ( simulated_time >= skip_time_dosp ) THEN
	755	time_dosp = time_dosp + dt_3d
	756	ENDIF
	757	time_dots = time_dots + dt_3d
[849]	758	IF ( .NOT. first_call_lpm ) THEN
[1]	759	time_dopts = time_dopts + dt_3d
	760	ENDIF
	761	IF ( simulated_time >= skip_time_dopr ) THEN
	762	time_dopr = time_dopr + dt_3d
	763	ENDIF
	764	time_dopr_listing = time_dopr_listing + dt_3d
	765	time_run_control = time_run_control + dt_3d
	766
	767	!
[102]	768	!-- Data exchange between coupled models
[291]	769	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[102]	770	time_coupling = time_coupling + dt_3d
[343]	771
[108]	772	!
	773	!-- In case of model termination initiated by the local model
	774	!-- (terminate_coupled > 0), the coupler must be skipped because it would
	775	!-- cause an MPI intercomminucation hang.
	776	!-- If necessary, the coupler will be called at the beginning of the
	777	!-- next restart run.
	778	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
[102]	779	CALL surface_coupler
	780	time_coupling = time_coupling - dt_coupling
	781	ENDDO
	782	ENDIF
	783
	784	!
[46]	785	!-- Execute user-defined actions
	786	CALL user_actions( 'after_integration' )
	787
	788	!
[1]	789	!-- If Galilei transformation is used, determine the distance that the
	790	!-- model has moved so far
	791	IF ( galilei_transformation ) THEN
	792	advected_distance_x = advected_distance_x + u_gtrans * dt_3d
	793	advected_distance_y = advected_distance_y + v_gtrans * dt_3d
	794	ENDIF
	795
	796	!
	797	!-- Check, if restart is necessary (because cpu-time is expiring or
	798	!-- because it is forced by user) and set stop flag
[108]	799	!-- This call is skipped if the remote model has already initiated a restart.
	800	IF ( .NOT. terminate_run ) CALL check_for_restart
[1]	801
	802	!
	803	!-- Carry out statistical analysis and output at the requested output times.
	804	!-- The MOD function is used for calculating the output time counters (like
	805	!-- time_dopr) in order to regard a possible decrease of the output time
	806	!-- interval in case of restart runs
	807
	808	!
	809	!-- Set a flag indicating that so far no statistics have been created
	810	!-- for this time step
	811	flow_statistics_called = .FALSE.
	812
	813	!
	814	!-- If required, call flow_statistics for averaging in time
[1342]	815	IF ( averaging_interval_pr /= 0.0_wp .AND. &
[1]	816	( dt_dopr - time_dopr ) <= averaging_interval_pr .AND. &
	817	simulated_time >= skip_time_dopr ) THEN
	818	time_dopr_av = time_dopr_av + dt_3d
	819	IF ( time_dopr_av >= dt_averaging_input_pr ) THEN
	820	do_sum = .TRUE.
	821	time_dopr_av = MOD( time_dopr_av, &
	822	MAX( dt_averaging_input_pr, dt_3d ) )
	823	ENDIF
	824	ENDIF
	825	IF ( do_sum ) CALL flow_statistics
	826
	827	!
[410]	828	!-- Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
[1342]	829	IF ( averaging_interval /= 0.0_wp .AND. &
[1]	830	( dt_data_output_av - time_do_av ) <= averaging_interval .AND. &
	831	simulated_time >= skip_time_data_output_av ) &
	832	THEN
	833	time_do_sla = time_do_sla + dt_3d
	834	IF ( time_do_sla >= dt_averaging_input ) THEN
	835	CALL sum_up_3d_data
	836	average_count_3d = average_count_3d + 1
	837	time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
	838	ENDIF
	839	ENDIF
	840
	841	!
	842	!-- Calculate spectra for time averaging
[1342]	843	IF ( averaging_interval_sp /= 0.0_wp .AND. &
[1]	844	( dt_dosp - time_dosp ) <= averaging_interval_sp .AND. &
	845	simulated_time >= skip_time_dosp ) THEN
	846	time_dosp_av = time_dosp_av + dt_3d
	847	IF ( time_dosp_av >= dt_averaging_input_pr ) THEN
	848	CALL calc_spectra
	849	time_dosp_av = MOD( time_dosp_av, &
	850	MAX( dt_averaging_input_pr, dt_3d ) )
	851	ENDIF
	852	ENDIF
	853
	854	!
	855	!-- Computation and output of run control parameters.
[1001]	856	!-- This is also done whenever perturbations have been imposed
[1]	857	IF ( time_run_control >= dt_run_control .OR. &
[1001]	858	timestep_scheme(1:5) /= 'runge' .OR. disturbance_created ) &
[1]	859	THEN
	860	CALL run_control
	861	IF ( time_run_control >= dt_run_control ) THEN
	862	time_run_control = MOD( time_run_control, &
	863	MAX( dt_run_control, dt_3d ) )
	864	ENDIF
	865	ENDIF
	866
	867	!
	868	!-- Profile output (ASCII) on file
	869	IF ( time_dopr_listing >= dt_dopr_listing ) THEN
	870	CALL print_1d
	871	time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, &
	872	dt_3d ) )
	873	ENDIF
	874
	875	!
	876	!-- Graphic output for PROFIL
	877	IF ( time_dopr >= dt_dopr ) THEN
	878	IF ( dopr_n /= 0 ) CALL data_output_profiles
	879	time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
[1342]	880	time_dopr_av = 0.0_wp ! due to averaging (see above)
[1]	881	ENDIF
	882
	883	!
	884	!-- Graphic output for time series
	885	IF ( time_dots >= dt_dots ) THEN
[48]	886	CALL data_output_tseries
[1]	887	time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
	888	ENDIF
	889
	890	!
	891	!-- Output of spectra (formatted for use with PROFIL), in case of no
	892	!-- time averaging, spectra has to be calculated before
	893	IF ( time_dosp >= dt_dosp ) THEN
	894	IF ( average_count_sp == 0 ) CALL calc_spectra
	895	CALL data_output_spectra
	896	time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
	897	ENDIF
	898
	899	!
	900	!-- 2d-data output (cross-sections)
	901	IF ( time_do2d_xy >= dt_do2d_xy ) THEN
	902	CALL data_output_2d( 'xy', 0 )
	903	time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
	904	ENDIF
	905	IF ( time_do2d_xz >= dt_do2d_xz ) THEN
	906	CALL data_output_2d( 'xz', 0 )
	907	time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
	908	ENDIF
	909	IF ( time_do2d_yz >= dt_do2d_yz ) THEN
	910	CALL data_output_2d( 'yz', 0 )
	911	time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
	912	ENDIF
	913
	914	!
	915	!-- 3d-data output (volume data)
	916	IF ( time_do3d >= dt_do3d ) THEN
	917	CALL data_output_3d( 0 )
	918	time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
	919	ENDIF
	920
	921	!
[410]	922	!-- masked data output
[1308]	923	!-- Parallel netcdf output is not tested so far for masked data, hence
	924	!-- netcdf_data_format is switched back to non-paralell output.
	925	netcdf_data_format_save = netcdf_data_format
	926	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
	927	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
[410]	928	DO mid = 1, masks
	929	IF ( time_domask(mid) >= dt_domask(mid) ) THEN
	930	CALL data_output_mask( 0 )
	931	time_domask(mid) = MOD( time_domask(mid), &
	932	MAX( dt_domask(mid), dt_3d ) )
	933	ENDIF
	934	ENDDO
[1308]	935	netcdf_data_format = netcdf_data_format_save
[410]	936
	937	!
	938	!-- Output of time-averaged 2d/3d/masked data
[1]	939	IF ( time_do_av >= dt_data_output_av ) THEN
	940	CALL average_3d_data
	941	CALL data_output_2d( 'xy', 1 )
	942	CALL data_output_2d( 'xz', 1 )
	943	CALL data_output_2d( 'yz', 1 )
	944	CALL data_output_3d( 1 )
[1308]	945	!-- Parallel netcdf output is not tested so far for masked data, hence
	946	!-- netcdf_data_format is switched back to non-paralell output.
	947	netcdf_data_format_save = netcdf_data_format
	948	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
	949	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
[410]	950	DO mid = 1, masks
	951	CALL data_output_mask( 1 )
	952	ENDDO
[1308]	953	netcdf_data_format = netcdf_data_format_save
[1]	954	time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
	955	ENDIF
	956
	957	!
	958	!-- Output of particle time series
[253]	959	IF ( particle_advection ) THEN
	960	IF ( time_dopts >= dt_dopts .OR. &
	961	( simulated_time >= particle_advection_start .AND. &
[849]	962	first_call_lpm ) ) THEN
[253]	963	CALL data_output_ptseries
	964	time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
	965	ENDIF
[1]	966	ENDIF
	967
	968	!
	969	!-- Output of dvrp-graphics (isosurface, particles, slicer)
	970	#if defined( __dvrp_graphics )
	971	CALL DVRP_LOG_EVENT( -2, current_timestep_number-1 )
	972	#endif
	973	IF ( time_dvrp >= dt_dvrp ) THEN
	974	CALL data_output_dvrp
	975	time_dvrp = MOD( time_dvrp, MAX( dt_dvrp, dt_3d ) )
	976	ENDIF
	977	#if defined( __dvrp_graphics )
	978	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	979	#endif
	980
	981	!
	982	!-- If required, set the heat flux for the next time step at a random value
	983	IF ( constant_heatflux .AND. random_heatflux ) CALL disturb_heatflux
	984
	985	!
	986	!-- Execute user-defined actions
	987	CALL user_actions( 'after_timestep' )
	988
[1402]	989	!
	990	!-- Output elapsed simulated time in form of a progress bar on stdout
	991	IF ( myid == 0 ) CALL output_progress_bar
	992
[1]	993	CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
	994
[667]	995
[1]	996	ENDDO ! time loop
	997
[1402]	998	IF ( myid == 0 ) CALL finish_progress_bar
	999
[1]	1000	#if defined( __dvrp_graphics )
	1001	CALL DVRP_LOG_EVENT( -2, current_timestep_number )
	1002	#endif
	1003
[1402]	1004	CALL location_message( 'finished time-stepping', .TRUE. )
[1384]	1005
[1]	1006	END SUBROUTINE time_integration

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