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source: palm/trunk/SOURCE/time_integration.f90 @ 1551

Last change on this file since 1551 was 1551, checked in by maronga, 9 years ago
land surface model released
Property svn:keywords set to `Id`
File size: 39.4 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	! ------------------
[1551]	22	! Added interface for different radiation schemes.
[1366]	23	!
	24	! Former revisions:
	25	! -----------------
	26	! $Id: time_integration.f90 1551 2015-03-03 14:18:16Z maronga $
	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, &
[1551]	225	ONLY: dt_radiation, irad_scheme, radiation, radiation_clearsky, &
	226	radiation_constant, radiation_rrtm, time_radiation
[1496]	227
[1320]	228	USE statistics, &
[1365]	229	ONLY: flow_statistics_called, hom, pr_palm, sums_ls_l
[1320]	230
	231	USE user_actions_mod, &
	232	ONLY: user_actions
	233
[1]	234	IMPLICIT NONE
	235
[1320]	236	CHARACTER (LEN=9) :: time_to_string !:
[1]	237
[1320]	238	INTEGER(iwp) :: netcdf_data_format_save !:
	239
[1]	240	!
	241	!-- At the beginning of a simulation determine the time step as well as
	242	!-- determine and print out the run control parameters
[1342]	243	IF ( simulated_time == 0.0_wp ) CALL timestep
[667]	244
[1]	245	CALL run_control
	246
[667]	247
[108]	248	!
	249	!-- Data exchange between coupled models in case that a call has been omitted
	250	!-- at the end of the previous run of a job chain.
[291]	251	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[108]	252	!
	253	!-- In case of model termination initiated by the local model the coupler
	254	!-- must not be called because this would again cause an MPI hang.
	255	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
	256	CALL surface_coupler
	257	time_coupling = time_coupling - dt_coupling
	258	ENDDO
[1342]	259	IF (time_coupling == 0.0_wp .AND. time_since_reference_point < dt_coupling)&
[348]	260	THEN
	261	time_coupling = time_since_reference_point
	262	ENDIF
[108]	263	ENDIF
	264
	265
[1]	266	#if defined( __dvrp_graphics )
	267	!
	268	!-- Time measurement with dvrp software
	269	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	270	#endif
	271
[1402]	272	CALL location_message( 'start with time-stepping', .TRUE. )
[1]	273	!
	274	!-- Start of the time loop
	275	DO WHILE ( simulated_time < end_time .AND. .NOT. stop_dt .AND. &
	276	.NOT. terminate_run )
	277
	278	CALL cpu_log( log_point_s(10), 'timesteps', 'start' )
[1221]	279
[1]	280	!
	281	!-- Determine size of next time step
[1342]	282	IF ( simulated_time /= 0.0_wp ) THEN
[1221]	283	CALL timestep
	284	ENDIF
	285
[1]	286	!
[1241]	287	!-- Determine ug, vg and w_subs in dependence on data from external file
	288	!-- LSF_DATA
[1365]	289	IF ( large_scale_forcing .AND. lsf_vert ) THEN
[1241]	290	CALL ls_forcing_vert ( simulated_time )
[1365]	291	sums_ls_l = 0.0_wp
[1241]	292	ENDIF
	293
	294	!
[1380]	295	!-- Set pt_init and q_init to the current profiles taken from
	296	!-- NUDGING_DATA
	297	IF ( nudging ) THEN
	298	CALL nudge_ref ( simulated_time )
	299	!
	300	!-- Store temperature gradient at the top boundary for possible Neumann
	301	!-- boundary condition
	302	bc_pt_t_val = ( pt_init(nzt+1) - pt_init(nzt) ) / dzu(nzt+1)
	303	bc_q_t_val = ( q_init(nzt+1) - q_init(nzt) ) / dzu(nzt+1)
	304	ENDIF
	305
	306	!
[1]	307	!-- Execute the user-defined actions
	308	CALL user_actions( 'before_timestep' )
	309
	310	!
	311	!-- Start of intermediate step loop
	312	intermediate_timestep_count = 0
	313	DO WHILE ( intermediate_timestep_count < &
	314	intermediate_timestep_count_max )
	315
	316	intermediate_timestep_count = intermediate_timestep_count + 1
	317
	318	!
	319	!-- Set the steering factors for the prognostic equations which depend
	320	!-- on the timestep scheme
	321	CALL timestep_scheme_steering
	322
	323	!
[1128]	324	!-- Calculate those variables needed in the tendency terms which need
	325	!-- global communication
[1179]	326	IF ( .NOT. use_single_reference_value .AND. &
	327	.NOT. use_initial_profile_as_reference ) THEN
	328	!
	329	!-- Horizontally averaged profiles to be used as reference state in
	330	!-- buoyancy terms (WARNING: only the respective last call of
	331	!-- calc_mean_profile defines the reference state!)
[1365]	332	IF ( .NOT. neutral ) THEN
	333	CALL calc_mean_profile( pt, 4 )
	334	ref_state(:) = hom(:,1,4,0) ! this is used in the buoyancy term
	335	ENDIF
	336	IF ( ocean ) THEN
	337	CALL calc_mean_profile( rho, 64 )
	338	ref_state(:) = hom(:,1,64,0)
	339	ENDIF
	340	IF ( humidity ) THEN
	341	CALL calc_mean_profile( vpt, 44 )
	342	ref_state(:) = hom(:,1,44,0)
	343	ENDIF
	344
[1179]	345	ENDIF
	346
[1128]	347	IF ( .NOT. constant_diffusion ) CALL production_e_init
	348	IF ( ( ws_scheme_mom .OR. ws_scheme_sca ) .AND. &
	349	intermediate_timestep_count == 1 ) CALL ws_statistics
[1365]	350	!
	351	!-- In case of nudging calculate current nudging time scale and horizontal
[1380]	352	!-- means of u, v, pt and q
[1365]	353	IF ( nudging ) THEN
	354	CALL calc_tnudge( simulated_time )
	355	CALL calc_mean_profile( u, 1 )
	356	CALL calc_mean_profile( v, 2 )
	357	CALL calc_mean_profile( pt, 4 )
	358	CALL calc_mean_profile( q, 41 )
	359	ENDIF
[1128]	360
	361	!
[1]	362	!-- Solve the prognostic equations. A fast cache optimized version with
	363	!-- only one single loop is used in case of Piascek-Williams advection
	364	!-- scheme. NEC vector machines use a different version, because
	365	!-- in the other versions a good vectorization is prohibited due to
	366	!-- inlining problems.
[1019]	367	IF ( loop_optimization == 'cache' ) THEN
	368	CALL prognostic_equations_cache
	369	ELSEIF ( loop_optimization == 'vector' ) THEN
[63]	370	CALL prognostic_equations_vector
[1015]	371	ELSEIF ( loop_optimization == 'acc' ) THEN
[1171]	372	i_left = nxl; i_right = nxr
	373	j_south = nys; j_north = nyn
	374	CALL prognostic_equations_acc
	375
	376	! i_left = nxl; i_right = nxl+nbgp-1
[1128]	377	! j_south = nys; j_north = nyn
	378	! CALL prognostic_equations_acc
[1171]	379	! i_left = nxr-nbgp+1; i_right = nxr
	380	! j_south = nys; j_north = nyn
	381	! CALL prognostic_equations_acc
[1128]	382
	383	!
	384	!-- Exchange of ghost points (lateral boundary conditions)
	385	IF ( background_communication ) THEN
	386
	387	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
	388
	389	send_receive = 'lr'
	390	sendrecv_in_background = .TRUE.
	391	req = 0
	392	req_count = 0
	393
	394	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	395	on_device = .TRUE. ! to be removed after complete porting
	396	ELSE ! of ghost point exchange
	397	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	398	ENDIF
	399
	400	CALL exchange_horiz( u_p, nbgp )
	401	CALL exchange_horiz( v_p, nbgp )
	402	CALL exchange_horiz( w_p, nbgp )
	403	CALL exchange_horiz( pt_p, nbgp )
	404	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	405	IF ( ocean ) THEN
	406	CALL exchange_horiz( sa_p, nbgp )
	407	CALL exchange_horiz( rho, nbgp )
	408	CALL exchange_horiz( prho, nbgp )
	409	ENDIF
	410	IF (humidity .OR. passive_scalar) THEN
	411	CALL exchange_horiz( q_p, nbgp )
	412	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
	413	CALL exchange_horiz( qr_p, nbgp )
	414	CALL exchange_horiz( nr_p, nbgp )
	415	ENDIF
	416	ENDIF
	417	IF ( cloud_droplets ) THEN
	418	CALL exchange_horiz( ql, nbgp )
	419	CALL exchange_horiz( ql_c, nbgp )
	420	CALL exchange_horiz( ql_v, nbgp )
	421	CALL exchange_horiz( ql_vp, nbgp )
	422	ENDIF
	423	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	424
	425	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	426	on_device = .FALSE. ! to be removed after complete porting
	427	ELSE ! of ghost point exchange
	428	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	429	ENDIF
	430
	431	sendrecv_in_background = .FALSE.
	432
	433	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'pause' )
	434
	435	ENDIF
	436
[1171]	437	! i_left = nxl+nbgp; i_right = nxr-nbgp
	438	! j_south = nys; j_north = nys+nbgp-1
	439	! CALL prognostic_equations_acc
	440	! i_left = nxl+nbgp; i_right = nxr-nbgp
	441	! j_south = nyn-nbgp+1; j_north = nyn
	442	! CALL prognostic_equations_acc
[1128]	443
	444	IF ( background_communication ) THEN
	445	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'start' )
	446	#if defined( __parallel )
	447	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	448	#endif
	449	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'pause' )
	450
	451	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'continue' )
	452
	453	send_receive = 'ns'
	454	sendrecv_in_background = .TRUE.
	455	req = 0
	456	req_count = 0
	457
	458	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	459	on_device = .TRUE. ! to be removed after complete porting
	460	ELSE ! of ghost point exchange
	461	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
	462	ENDIF
	463
	464	CALL exchange_horiz( u_p, nbgp )
	465	CALL exchange_horiz( v_p, nbgp )
	466	CALL exchange_horiz( w_p, nbgp )
	467	CALL exchange_horiz( pt_p, nbgp )
	468	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	469	IF ( ocean ) THEN
	470	CALL exchange_horiz( sa_p, nbgp )
	471	CALL exchange_horiz( rho, nbgp )
	472	CALL exchange_horiz( prho, nbgp )
	473	ENDIF
	474	IF (humidity .OR. passive_scalar) THEN
	475	CALL exchange_horiz( q_p, nbgp )
	476	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
	477	CALL exchange_horiz( qr_p, nbgp )
	478	CALL exchange_horiz( nr_p, nbgp )
	479	ENDIF
	480	ENDIF
	481	IF ( cloud_droplets ) THEN
	482	CALL exchange_horiz( ql, nbgp )
	483	CALL exchange_horiz( ql_c, nbgp )
	484	CALL exchange_horiz( ql_v, nbgp )
	485	CALL exchange_horiz( ql_vp, nbgp )
	486	ENDIF
	487	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	488
	489	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	490	on_device = .FALSE. ! to be removed after complete porting
	491	ELSE ! of ghost point exchange
	492	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	493	ENDIF
	494
	495	sendrecv_in_background = .FALSE.
	496
	497	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	498
	499	ENDIF
	500
[1171]	501	! i_left = nxl+nbgp; i_right = nxr-nbgp
	502	! j_south = nys+nbgp; j_north = nyn-nbgp
	503	! CALL prognostic_equations_acc
[1128]	504
	505	IF ( background_communication ) THEN
	506	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'continue' )
	507	#if defined( __parallel )
	508	CALL MPI_WAITALL( req_count, req, wait_stat, ierr )
	509	#endif
	510	send_receive = 'al'
	511	CALL cpu_log( log_point(41), 'exchange-horiz-wait', 'stop' )
	512	ENDIF
	513
[1]	514	ENDIF
	515
	516	!
[849]	517	!-- Particle transport/physics with the Lagrangian particle model
	518	!-- (only once during intermediate steps, because it uses an Euler-step)
[1128]	519	!-- ### particle model should be moved before prognostic_equations, in order
	520	!-- to regard droplet interactions directly
[63]	521	IF ( particle_advection .AND. &
	522	simulated_time >= particle_advection_start .AND. &
[1]	523	intermediate_timestep_count == 1 ) THEN
[849]	524	CALL lpm
	525	first_call_lpm = .FALSE.
[1]	526	ENDIF
	527
	528	!
	529	!-- Interaction of droplets with temperature and specific humidity.
	530	!-- Droplet condensation and evaporation is calculated within
	531	!-- advec_particles.
	532	IF ( cloud_droplets .AND. &
	533	intermediate_timestep_count == intermediate_timestep_count_max )&
	534	THEN
	535	CALL interaction_droplets_ptq
	536	ENDIF
	537
	538	!
	539	!-- Exchange of ghost points (lateral boundary conditions)
[1128]	540	IF ( .NOT. background_communication ) THEN
[1113]	541
[1128]	542	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'start' )
[1113]	543
[1128]	544	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	545	on_device = .TRUE. ! to be removed after complete porting
	546	ELSE ! of ghost point exchange
	547	!$acc update host( e_p, pt_p, u_p, v_p, w_p )
[1053]	548	ENDIF
[1]	549
[1128]	550	CALL exchange_horiz( u_p, nbgp )
	551	CALL exchange_horiz( v_p, nbgp )
	552	CALL exchange_horiz( w_p, nbgp )
	553	CALL exchange_horiz( pt_p, nbgp )
	554	IF ( .NOT. constant_diffusion ) CALL exchange_horiz( e_p, nbgp )
	555	IF ( ocean ) THEN
	556	CALL exchange_horiz( sa_p, nbgp )
	557	CALL exchange_horiz( rho, nbgp )
	558	CALL exchange_horiz( prho, nbgp )
	559	ENDIF
	560	IF (humidity .OR. passive_scalar) THEN
	561	CALL exchange_horiz( q_p, nbgp )
[1179]	562	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
	563	precipitation ) THEN
[1128]	564	CALL exchange_horiz( qr_p, nbgp )
	565	CALL exchange_horiz( nr_p, nbgp )
	566	ENDIF
	567	ENDIF
	568	IF ( cloud_droplets ) THEN
	569	CALL exchange_horiz( ql, nbgp )
	570	CALL exchange_horiz( ql_c, nbgp )
	571	CALL exchange_horiz( ql_v, nbgp )
	572	CALL exchange_horiz( ql_vp, nbgp )
	573	ENDIF
	574	IF ( wang_kernel .OR. turbulence ) CALL exchange_horiz( diss, nbgp )
	575
	576	IF ( numprocs == 1 ) THEN ! workaround for single-core GPU runs
	577	on_device = .FALSE. ! to be removed after complete porting
	578	ELSE ! of ghost point exchange
	579	!$acc update device( e_p, pt_p, u_p, v_p, w_p )
	580	ENDIF
	581
	582	CALL cpu_log( log_point(26), 'exchange-horiz-progn', 'stop' )
	583
[1113]	584	ENDIF
	585
[1]	586	!
	587	!-- Boundary conditions for the prognostic quantities (except of the
	588	!-- velocities at the outflow in case of a non-cyclic lateral wall)
[1113]	589	CALL boundary_conds
[1]	590
	591	!
[1496]	592	!-- When using the land surface model:
	593	!-- 1) solve energy balance equation to calculate new skin temperature
	594	!-- 2) run soil model
	595	IF ( land_surface ) THEN
	596
	597	time_radiation = time_radiation + dt_3d
	598
	599	IF ( time_radiation >= dt_radiation ) THEN
	600
	601	CALL cpu_log( log_point(50), 'radiation', 'start' )
	602
	603	time_radiation = time_radiation - dt_radiation
[1551]	604	IF ( irad_scheme == 0 ) THEN
	605	CALL radiation_constant
	606	ELSEIF ( irad_scheme == 1 ) THEN
	607	CALL radiation_clearsky
	608	ELSEIF ( irad_scheme == 2 ) THEN
	609	CALL radiation_rrtm
	610	ENDIF
[1496]	611
	612	CALL cpu_log( log_point(50), 'radiation', 'stop' )
	613	ENDIF
	614
	615	CALL cpu_log( log_point(54), 'land_surface', 'start' )
	616
	617	CALL lsm_energy_balance
	618	CALL lsm_soil_model
	619
	620	CALL cpu_log( log_point(54), 'land_surface', 'stop' )
	621
	622	ENDIF
	623
	624	!
[73]	625	!-- Swap the time levels in preparation for the next time step.
	626	CALL swap_timelevel
	627
	628	!
[1]	629	!-- Temperature offset must be imposed at cyclic boundaries in x-direction
	630	!-- when a sloping surface is used
	631	IF ( sloping_surface ) THEN
[707]	632	IF ( nxl == 0 ) pt(:,:,nxlg:nxl-1) = pt(:,:,nxlg:nxl-1) - &
	633	pt_slope_offset
	634	IF ( nxr == nx ) pt(:,:,nxr+1:nxrg) = pt(:,:,nxr+1:nxrg) + &
	635	pt_slope_offset
[1]	636	ENDIF
	637
	638	!
[151]	639	!-- Impose a turbulent inflow using the recycling method
	640	IF ( turbulent_inflow ) CALL inflow_turbulence
	641
	642	!
[1]	643	!-- Impose a random perturbation on the horizontal velocity field
[106]	644	IF ( create_disturbances .AND. &
	645	( call_psolver_at_all_substeps .AND. &
[1]	646	intermediate_timestep_count == intermediate_timestep_count_max )&
[106]	647	.OR. ( .NOT. call_psolver_at_all_substeps .AND. &
	648	intermediate_timestep_count == 1 ) ) &
[1]	649	THEN
	650	time_disturb = time_disturb + dt_3d
	651	IF ( time_disturb >= dt_disturb ) THEN
[1111]	652	!$acc update host( u, v )
[1113]	653	IF ( numprocs == 1 ) on_device = .FALSE. ! workaround, remove later
[87]	654	IF ( hom(nzb+5,1,pr_palm,0) < disturbance_energy_limit ) THEN
[75]	655	CALL disturb_field( nzb_u_inner, tend, u )
	656	CALL disturb_field( nzb_v_inner, tend, v )
[707]	657	ELSEIF ( .NOT. bc_lr_cyc .OR. .NOT. bc_ns_cyc ) THEN
[1]	658	!
	659	!-- Runs with a non-cyclic lateral wall need perturbations
	660	!-- near the inflow throughout the whole simulation
	661	dist_range = 1
[75]	662	CALL disturb_field( nzb_u_inner, tend, u )
	663	CALL disturb_field( nzb_v_inner, tend, v )
[1]	664	dist_range = 0
	665	ENDIF
[1113]	666	IF ( numprocs == 1 ) on_device = .TRUE. ! workaround, remove later
[1111]	667	!$acc update device( u, v )
[1]	668	time_disturb = time_disturb - dt_disturb
	669	ENDIF
	670	ENDIF
	671
	672	!
	673	!-- Reduce the velocity divergence via the equation for perturbation
	674	!-- pressure.
[106]	675	IF ( intermediate_timestep_count == 1 .OR. &
	676	call_psolver_at_all_substeps ) THEN
[1]	677	CALL pres
	678	ENDIF
	679
	680	!
	681	!-- If required, compute liquid water content
[1015]	682	IF ( cloud_physics ) THEN
	683	CALL calc_liquid_water_content
	684	!$acc update device( ql )
	685	ENDIF
[1115]	686	!
	687	!-- If required, compute virtual potential temperature
	688	IF ( humidity ) THEN
	689	CALL compute_vpt
	690	!$acc update device( vpt )
	691	ENDIF
[1]	692	!
	693	!-- Compute the diffusion quantities
	694	IF ( .NOT. constant_diffusion ) THEN
	695
	696	!
[1276]	697	!-- Determine surface fluxes shf and qsws and surface values
	698	!-- pt_surface and q_surface in dependence on data from external
	699	!-- file LSF_DATA respectively
	700	IF ( ( large_scale_forcing .AND. lsf_surf ) .AND. &
	701	intermediate_timestep_count == intermediate_timestep_count_max )&
	702	THEN
	703	CALL ls_forcing_surf ( simulated_time )
	704	ENDIF
	705
	706	!
[1]	707	!-- First the vertical fluxes in the Prandtl layer are being computed
	708	IF ( prandtl_layer ) THEN
	709	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'start' )
	710	CALL prandtl_fluxes
	711	CALL cpu_log( log_point(19), 'prandtl_fluxes', 'stop' )
	712	ENDIF
[1241]	713
[1]	714	!
	715	!-- Compute the diffusion coefficients
	716	CALL cpu_log( log_point(17), 'diffusivities', 'start' )
[75]	717	IF ( .NOT. humidity ) THEN
[97]	718	IF ( ocean ) THEN
[388]	719	CALL diffusivities( prho, prho_reference )
[97]	720	ELSE
	721	CALL diffusivities( pt, pt_reference )
	722	ENDIF
[1]	723	ELSE
[97]	724	CALL diffusivities( vpt, pt_reference )
[1]	725	ENDIF
	726	CALL cpu_log( log_point(17), 'diffusivities', 'stop' )
	727
	728	ENDIF
	729
	730	ENDDO ! Intermediate step loop
	731
	732	!
	733	!-- Increase simulation time and output times
[1111]	734	nr_timesteps_this_run = nr_timesteps_this_run + 1
[291]	735	current_timestep_number = current_timestep_number + 1
	736	simulated_time = simulated_time + dt_3d
	737	simulated_time_chr = time_to_string( simulated_time )
	738	time_since_reference_point = simulated_time - coupling_start_time
	739
[1]	740	IF ( simulated_time >= skip_time_data_output_av ) THEN
	741	time_do_av = time_do_av + dt_3d
	742	ENDIF
	743	IF ( simulated_time >= skip_time_do2d_xy ) THEN
	744	time_do2d_xy = time_do2d_xy + dt_3d
	745	ENDIF
	746	IF ( simulated_time >= skip_time_do2d_xz ) THEN
	747	time_do2d_xz = time_do2d_xz + dt_3d
	748	ENDIF
	749	IF ( simulated_time >= skip_time_do2d_yz ) THEN
	750	time_do2d_yz = time_do2d_yz + dt_3d
	751	ENDIF
	752	IF ( simulated_time >= skip_time_do3d ) THEN
	753	time_do3d = time_do3d + dt_3d
	754	ENDIF
[410]	755	DO mid = 1, masks
	756	IF ( simulated_time >= skip_time_domask(mid) ) THEN
	757	time_domask(mid)= time_domask(mid) + dt_3d
	758	ENDIF
	759	ENDDO
[1]	760	time_dvrp = time_dvrp + dt_3d
	761	IF ( simulated_time >= skip_time_dosp ) THEN
	762	time_dosp = time_dosp + dt_3d
	763	ENDIF
	764	time_dots = time_dots + dt_3d
[849]	765	IF ( .NOT. first_call_lpm ) THEN
[1]	766	time_dopts = time_dopts + dt_3d
	767	ENDIF
	768	IF ( simulated_time >= skip_time_dopr ) THEN
	769	time_dopr = time_dopr + dt_3d
	770	ENDIF
	771	time_dopr_listing = time_dopr_listing + dt_3d
	772	time_run_control = time_run_control + dt_3d
	773
	774	!
[102]	775	!-- Data exchange between coupled models
[291]	776	IF ( coupling_mode /= 'uncoupled' .AND. run_coupled ) THEN
[102]	777	time_coupling = time_coupling + dt_3d
[343]	778
[108]	779	!
	780	!-- In case of model termination initiated by the local model
	781	!-- (terminate_coupled > 0), the coupler must be skipped because it would
	782	!-- cause an MPI intercomminucation hang.
	783	!-- If necessary, the coupler will be called at the beginning of the
	784	!-- next restart run.
	785	DO WHILE ( time_coupling >= dt_coupling .AND. terminate_coupled == 0 )
[102]	786	CALL surface_coupler
	787	time_coupling = time_coupling - dt_coupling
	788	ENDDO
	789	ENDIF
	790
	791	!
[46]	792	!-- Execute user-defined actions
	793	CALL user_actions( 'after_integration' )
	794
	795	!
[1]	796	!-- If Galilei transformation is used, determine the distance that the
	797	!-- model has moved so far
	798	IF ( galilei_transformation ) THEN
	799	advected_distance_x = advected_distance_x + u_gtrans * dt_3d
	800	advected_distance_y = advected_distance_y + v_gtrans * dt_3d
	801	ENDIF
	802
	803	!
	804	!-- Check, if restart is necessary (because cpu-time is expiring or
	805	!-- because it is forced by user) and set stop flag
[108]	806	!-- This call is skipped if the remote model has already initiated a restart.
	807	IF ( .NOT. terminate_run ) CALL check_for_restart
[1]	808
	809	!
	810	!-- Carry out statistical analysis and output at the requested output times.
	811	!-- The MOD function is used for calculating the output time counters (like
	812	!-- time_dopr) in order to regard a possible decrease of the output time
	813	!-- interval in case of restart runs
	814
	815	!
	816	!-- Set a flag indicating that so far no statistics have been created
	817	!-- for this time step
	818	flow_statistics_called = .FALSE.
	819
	820	!
	821	!-- If required, call flow_statistics for averaging in time
[1342]	822	IF ( averaging_interval_pr /= 0.0_wp .AND. &
[1]	823	( dt_dopr - time_dopr ) <= averaging_interval_pr .AND. &
	824	simulated_time >= skip_time_dopr ) THEN
	825	time_dopr_av = time_dopr_av + dt_3d
	826	IF ( time_dopr_av >= dt_averaging_input_pr ) THEN
	827	do_sum = .TRUE.
	828	time_dopr_av = MOD( time_dopr_av, &
	829	MAX( dt_averaging_input_pr, dt_3d ) )
	830	ENDIF
	831	ENDIF
	832	IF ( do_sum ) CALL flow_statistics
	833
	834	!
[410]	835	!-- Sum-up 3d-arrays for later output of time-averaged 2d/3d/masked data
[1342]	836	IF ( averaging_interval /= 0.0_wp .AND. &
[1]	837	( dt_data_output_av - time_do_av ) <= averaging_interval .AND. &
	838	simulated_time >= skip_time_data_output_av ) &
	839	THEN
	840	time_do_sla = time_do_sla + dt_3d
	841	IF ( time_do_sla >= dt_averaging_input ) THEN
	842	CALL sum_up_3d_data
	843	average_count_3d = average_count_3d + 1
	844	time_do_sla = MOD( time_do_sla, MAX( dt_averaging_input, dt_3d ) )
	845	ENDIF
	846	ENDIF
	847
	848	!
	849	!-- Calculate spectra for time averaging
[1342]	850	IF ( averaging_interval_sp /= 0.0_wp .AND. &
[1]	851	( dt_dosp - time_dosp ) <= averaging_interval_sp .AND. &
	852	simulated_time >= skip_time_dosp ) THEN
	853	time_dosp_av = time_dosp_av + dt_3d
	854	IF ( time_dosp_av >= dt_averaging_input_pr ) THEN
	855	CALL calc_spectra
	856	time_dosp_av = MOD( time_dosp_av, &
	857	MAX( dt_averaging_input_pr, dt_3d ) )
	858	ENDIF
	859	ENDIF
	860
	861	!
	862	!-- Computation and output of run control parameters.
[1001]	863	!-- This is also done whenever perturbations have been imposed
[1]	864	IF ( time_run_control >= dt_run_control .OR. &
[1001]	865	timestep_scheme(1:5) /= 'runge' .OR. disturbance_created ) &
[1]	866	THEN
	867	CALL run_control
	868	IF ( time_run_control >= dt_run_control ) THEN
	869	time_run_control = MOD( time_run_control, &
	870	MAX( dt_run_control, dt_3d ) )
	871	ENDIF
	872	ENDIF
	873
	874	!
	875	!-- Profile output (ASCII) on file
	876	IF ( time_dopr_listing >= dt_dopr_listing ) THEN
	877	CALL print_1d
	878	time_dopr_listing = MOD( time_dopr_listing, MAX( dt_dopr_listing, &
	879	dt_3d ) )
	880	ENDIF
	881
	882	!
	883	!-- Graphic output for PROFIL
	884	IF ( time_dopr >= dt_dopr ) THEN
	885	IF ( dopr_n /= 0 ) CALL data_output_profiles
	886	time_dopr = MOD( time_dopr, MAX( dt_dopr, dt_3d ) )
[1342]	887	time_dopr_av = 0.0_wp ! due to averaging (see above)
[1]	888	ENDIF
	889
	890	!
	891	!-- Graphic output for time series
	892	IF ( time_dots >= dt_dots ) THEN
[48]	893	CALL data_output_tseries
[1]	894	time_dots = MOD( time_dots, MAX( dt_dots, dt_3d ) )
	895	ENDIF
	896
	897	!
	898	!-- Output of spectra (formatted for use with PROFIL), in case of no
	899	!-- time averaging, spectra has to be calculated before
	900	IF ( time_dosp >= dt_dosp ) THEN
	901	IF ( average_count_sp == 0 ) CALL calc_spectra
	902	CALL data_output_spectra
	903	time_dosp = MOD( time_dosp, MAX( dt_dosp, dt_3d ) )
	904	ENDIF
	905
	906	!
	907	!-- 2d-data output (cross-sections)
	908	IF ( time_do2d_xy >= dt_do2d_xy ) THEN
	909	CALL data_output_2d( 'xy', 0 )
	910	time_do2d_xy = MOD( time_do2d_xy, MAX( dt_do2d_xy, dt_3d ) )
	911	ENDIF
	912	IF ( time_do2d_xz >= dt_do2d_xz ) THEN
	913	CALL data_output_2d( 'xz', 0 )
	914	time_do2d_xz = MOD( time_do2d_xz, MAX( dt_do2d_xz, dt_3d ) )
	915	ENDIF
	916	IF ( time_do2d_yz >= dt_do2d_yz ) THEN
	917	CALL data_output_2d( 'yz', 0 )
	918	time_do2d_yz = MOD( time_do2d_yz, MAX( dt_do2d_yz, dt_3d ) )
	919	ENDIF
	920
	921	!
	922	!-- 3d-data output (volume data)
	923	IF ( time_do3d >= dt_do3d ) THEN
	924	CALL data_output_3d( 0 )
	925	time_do3d = MOD( time_do3d, MAX( dt_do3d, dt_3d ) )
	926	ENDIF
	927
	928	!
[410]	929	!-- masked data output
[1308]	930	!-- Parallel netcdf output is not tested so far for masked data, hence
	931	!-- netcdf_data_format is switched back to non-paralell output.
	932	netcdf_data_format_save = netcdf_data_format
	933	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
	934	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
[410]	935	DO mid = 1, masks
	936	IF ( time_domask(mid) >= dt_domask(mid) ) THEN
	937	CALL data_output_mask( 0 )
	938	time_domask(mid) = MOD( time_domask(mid), &
	939	MAX( dt_domask(mid), dt_3d ) )
	940	ENDIF
	941	ENDDO
[1308]	942	netcdf_data_format = netcdf_data_format_save
[410]	943
	944	!
	945	!-- Output of time-averaged 2d/3d/masked data
[1]	946	IF ( time_do_av >= dt_data_output_av ) THEN
	947	CALL average_3d_data
	948	CALL data_output_2d( 'xy', 1 )
	949	CALL data_output_2d( 'xz', 1 )
	950	CALL data_output_2d( 'yz', 1 )
	951	CALL data_output_3d( 1 )
[1308]	952	!-- Parallel netcdf output is not tested so far for masked data, hence
	953	!-- netcdf_data_format is switched back to non-paralell output.
	954	netcdf_data_format_save = netcdf_data_format
	955	IF ( netcdf_data_format == 5 ) netcdf_data_format = 3
	956	IF ( netcdf_data_format == 6 ) netcdf_data_format = 4
[410]	957	DO mid = 1, masks
	958	CALL data_output_mask( 1 )
	959	ENDDO
[1308]	960	netcdf_data_format = netcdf_data_format_save
[1]	961	time_do_av = MOD( time_do_av, MAX( dt_data_output_av, dt_3d ) )
	962	ENDIF
	963
	964	!
	965	!-- Output of particle time series
[253]	966	IF ( particle_advection ) THEN
	967	IF ( time_dopts >= dt_dopts .OR. &
	968	( simulated_time >= particle_advection_start .AND. &
[849]	969	first_call_lpm ) ) THEN
[253]	970	CALL data_output_ptseries
	971	time_dopts = MOD( time_dopts, MAX( dt_dopts, dt_3d ) )
	972	ENDIF
[1]	973	ENDIF
	974
	975	!
	976	!-- Output of dvrp-graphics (isosurface, particles, slicer)
	977	#if defined( __dvrp_graphics )
	978	CALL DVRP_LOG_EVENT( -2, current_timestep_number-1 )
	979	#endif
	980	IF ( time_dvrp >= dt_dvrp ) THEN
	981	CALL data_output_dvrp
	982	time_dvrp = MOD( time_dvrp, MAX( dt_dvrp, dt_3d ) )
	983	ENDIF
	984	#if defined( __dvrp_graphics )
	985	CALL DVRP_LOG_EVENT( 2, current_timestep_number )
	986	#endif
	987
	988	!
	989	!-- If required, set the heat flux for the next time step at a random value
	990	IF ( constant_heatflux .AND. random_heatflux ) CALL disturb_heatflux
	991
	992	!
	993	!-- Execute user-defined actions
	994	CALL user_actions( 'after_timestep' )
	995
[1402]	996	!
	997	!-- Output elapsed simulated time in form of a progress bar on stdout
	998	IF ( myid == 0 ) CALL output_progress_bar
	999
[1]	1000	CALL cpu_log( log_point_s(10), 'timesteps', 'stop' )
	1001
[667]	1002
[1]	1003	ENDDO ! time loop
	1004
[1402]	1005	IF ( myid == 0 ) CALL finish_progress_bar
	1006
[1]	1007	#if defined( __dvrp_graphics )
	1008	CALL DVRP_LOG_EVENT( -2, current_timestep_number )
	1009	#endif
	1010
[1402]	1011	CALL location_message( 'finished time-stepping', .TRUE. )
[1384]	1012
[1]	1013	END SUBROUTINE time_integration

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