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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1919

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1	!> @file init_3d_model.f90
2	!--------------------------------------------------------------------------------!
3	! This file is part of PALM.
4	!
5	! PALM is free software: you can redistribute it and/or modify it under the terms
6	! of the GNU General Public License as published by the Free Software Foundation,
7	! either version 3 of the License, or (at your option) any later version.
8	!
9	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
10	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
11	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
12	!
13	! You should have received a copy of the GNU General Public License along with
14	! PALM. If not, see <http://www.gnu.org/licenses/>.
15	!
16	! Copyright 1997-2016 Leibniz Universitaet Hannover
17	!--------------------------------------------------------------------------------!
18	!
19	! Current revisions:
20	! ------------------
21	!
22	!
23	! Former revisions:
24	! -----------------
25	! $Id: init_3d_model.f90 1919 2016-05-27 14:51:23Z raasch $
26	!
27	! 1918 2016-05-27 14:35:57Z raasch
28	! intermediate_timestep_count is set 0 instead 1 for first call of pres,
29	! bugfix: initialization of local sum arrays are moved to the beginning of the
30	! routine because otherwise results from pres are overwritten
31	!
32	! 1914 2016-05-26 14:44:07Z witha
33	! Added initialization of the wind turbine model
34	!
35	! 1878 2016-04-19 12:30:36Z hellstea
36	! The zeroth element of weight_pres removed as unnecessary
37	!
38	! 1849 2016-04-08 11:33:18Z hoffmann
39	! Adapted for modularization of microphysics.
40	! precipitation_amount, precipitation_rate, prr moved to arrays_3d.
41	! Initialization of nc_1d, nr_1d, pt_1d, qc_1d, qr_1d, q_1d moved to
42	! microphysics_init.
43	!
44	! 1845 2016-04-08 08:29:13Z raasch
45	! nzb_2d replaced by nzb_u\|v_inner
46	!
47	! 1833 2016-04-07 14:23:03Z raasch
48	! initialization of spectra quantities moved to spectra_mod
49	!
50	! 1831 2016-04-07 13:15:51Z hoffmann
51	! turbulence renamed collision_turbulence
52	!
53	! 1826 2016-04-07 12:01:39Z maronga
54	! Renamed radiation calls.
55	! Renamed canopy model calls.
56	!
57	! 1822 2016-04-07 07:49:42Z hoffmann
58	! icloud_scheme replaced by microphysics_*
59	!
60	! 1817 2016-04-06 15:44:20Z maronga
61	! Renamed lsm calls.
62	!
63	! 1815 2016-04-06 13:49:59Z raasch
64	! zero-settings for velocities inside topography re-activated (was deactivated
65	! in r1762)
66	!
67	! 1788 2016-03-10 11:01:04Z maronga
68	! Added z0q.
69	! Syntax layout improved.
70	!
71	! 1783 2016-03-06 18:36:17Z raasch
72	! netcdf module name changed + related changes
73	!
74	! 1764 2016-02-28 12:45:19Z raasch
75	! bugfix: increase size of volume_flow_area_l and volume_flow_initial_l by 1
76	!
77	! 1762 2016-02-25 12:31:13Z hellstea
78	! Introduction of nested domain feature
79	!
80	! 1738 2015-12-18 13:56:05Z raasch
81	! calculate mean surface level height for each statistic region
82	!
83	! 1734 2015-12-02 12:17:12Z raasch
84	! no initial disturbances in case that the disturbance energy limit has been
85	! set zero
86	!
87	! 1707 2015-11-02 15:24:52Z maronga
88	! Bugfix: transfer of Richardson number from 1D model to Obukhov length caused
89	! devision by zero in neutral stratification
90	!
91	! 1691 2015-10-26 16:17:44Z maronga
92	! Call to init_surface_layer added. rif is replaced by ol and zeta.
93	!
94	! 1682 2015-10-07 23:56:08Z knoop
95	! Code annotations made doxygen readable
96	!
97	! 1615 2015-07-08 18:49:19Z suehring
98	! Enable turbulent inflow for passive_scalar and humidity
99	!
100	! 1585 2015-04-30 07:05:52Z maronga
101	! Initialization of radiation code is now done after LSM initializtion
102	!
103	! 1575 2015-03-27 09:56:27Z raasch
104	! adjustments for psolver-queries
105	!
106	! 1551 2015-03-03 14:18:16Z maronga
107	! Allocation of land surface arrays is now done in the subroutine lsm_init_arrays,
108	! which is part of land_surface_model.
109	!
110	! 1507 2014-12-10 12:14:18Z suehring
111	! Bugfix: set horizontal velocity components to zero inside topography
112	!
113	! 1496 2014-12-02 17:25:50Z maronga
114	! Added initialization of the land surface and radiation schemes
115	!
116	! 1484 2014-10-21 10:53:05Z kanani
117	! Changes due to new module structure of the plant canopy model:
118	! canopy-related initialization (e.g. lad and canopy_heat_flux) moved to new
119	! subroutine init_plant_canopy within the module plant_canopy_model_mod,
120	! call of subroutine init_plant_canopy added.
121	!
122	! 1431 2014-07-15 14:47:17Z suehring
123	! var_d added, in order to normalize spectra.
124	!
125	! 1429 2014-07-15 12:53:45Z knoop
126	! Ensemble run capability added to parallel random number generator
127	!
128	! 1411 2014-05-16 18:01:51Z suehring
129	! Initial horizontal velocity profiles were not set to zero at the first vertical
130	! grid level in case of non-cyclic lateral boundary conditions.
131	!
132	! 1406 2014-05-16 13:47:01Z raasch
133	! bugfix: setting of initial velocities at k=1 to zero not in case of a
134	! no-slip boundary condition for uv
135	!
136	! 1402 2014-05-09 14:25:13Z raasch
137	! location messages modified
138	!
139	! 1400 2014-05-09 14:03:54Z knoop
140	! Parallel random number generator added
141	!
142	! 1384 2014-05-02 14:31:06Z raasch
143	! location messages added
144	!
145	! 1361 2014-04-16 15:17:48Z hoffmann
146	! tend_* removed
147	! Bugfix: w_subs is not allocated anymore if it is already allocated
148	!
149	! 1359 2014-04-11 17:15:14Z hoffmann
150	! module lpm_init_mod added to use statements, because lpm_init has become a
151	! module
152	!
153	! 1353 2014-04-08 15:21:23Z heinze
154	! REAL constants provided with KIND-attribute
155	!
156	! 1340 2014-03-25 19:45:13Z kanani
157	! REAL constants defined as wp-kind
158	!
159	! 1322 2014-03-20 16:38:49Z raasch
160	! REAL constants defined as wp-kind
161	! module interfaces removed
162	!
163	! 1320 2014-03-20 08:40:49Z raasch
164	! ONLY-attribute added to USE-statements,
165	! kind-parameters added to all INTEGER and REAL declaration statements,
166	! kinds are defined in new module kinds,
167	! revision history before 2012 removed,
168	! comment fields (!:) to be used for variable explanations added to
169	! all variable declaration statements
170	!
171	! 1316 2014-03-17 07:44:59Z heinze
172	! Bugfix: allocation of w_subs
173	!
174	! 1299 2014-03-06 13:15:21Z heinze
175	! Allocate w_subs due to extension of large scale subsidence in combination
176	! with large scale forcing data (LSF_DATA)
177	!
178	! 1241 2013-10-30 11:36:58Z heinze
179	! Overwrite initial profiles in case of nudging
180	! Inititialize shf and qsws in case of large_scale_forcing
181	!
182	! 1221 2013-09-10 08:59:13Z raasch
183	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
184	! copy
185	!
186	! 1212 2013-08-15 08:46:27Z raasch
187	! array tri is allocated and included in data copy statement
188	!
189	! 1195 2013-07-01 12:27:57Z heinze
190	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
191	!
192	! 1179 2013-06-14 05:57:58Z raasch
193	! allocate and set ref_state to be used in buoyancy terms
194	!
195	! 1171 2013-05-30 11:27:45Z raasch
196	! diss array is allocated with full size if accelerator boards are used
197	!
198	! 1159 2013-05-21 11:58:22Z fricke
199	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
200	!
201	! 1153 2013-05-10 14:33:08Z raasch
202	! diss array is allocated with dummy elements even if it is not needed
203	! (required by PGI 13.4 / CUDA 5.0)
204	!
205	! 1115 2013-03-26 18:16:16Z hoffmann
206	! unused variables removed
207	!
208	! 1113 2013-03-10 02:48:14Z raasch
209	! openACC directive modified
210	!
211	! 1111 2013-03-08 23:54:10Z raasch
212	! openACC directives added for pres
213	! array diss allocated only if required
214	!
215	! 1092 2013-02-02 11:24:22Z raasch
216	! unused variables removed
217	!
218	! 1065 2012-11-22 17:42:36Z hoffmann
219	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
220	!
221	! 1053 2012-11-13 17:11:03Z hoffmann
222	! allocation and initialisation of necessary data arrays for the two-moment
223	! cloud physics scheme the two new prognostic equations (nr, qr):
224	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
225	! +tend_*, prr
226	!
227	! 1036 2012-10-22 13:43:42Z raasch
228	! code put under GPL (PALM 3.9)
229	!
230	! 1032 2012-10-21 13:03:21Z letzel
231	! save memory by not allocating pt_2 in case of neutral = .T.
232	!
233	! 1025 2012-10-07 16:04:41Z letzel
234	! bugfix: swap indices of mask for ghost boundaries
235	!
236	! 1015 2012-09-27 09:23:24Z raasch
237	! mask is set to zero for ghost boundaries
238	!
239	! 1010 2012-09-20 07:59:54Z raasch
240	! cpp switch __nopointer added for pointer free version
241	!
242	! 1003 2012-09-14 14:35:53Z raasch
243	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
244	!
245	! 1001 2012-09-13 14:08:46Z raasch
246	! all actions concerning leapfrog scheme removed
247	!
248	! 996 2012-09-07 10:41:47Z raasch
249	! little reformatting
250	!
251	! 978 2012-08-09 08:28:32Z fricke
252	! outflow damping layer removed
253	! roughness length for scalar quantites z0h added
254	! damping zone for the potential temperatur in case of non-cyclic lateral
255	! boundaries added
256	! initialization of ptdf_x, ptdf_y
257	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
258	!
259	! 849 2012-03-15 10:35:09Z raasch
260	! init_particles renamed lpm_init
261	!
262	! 825 2012-02-19 03:03:44Z raasch
263	! wang_collision_kernel renamed wang_kernel
264	!
265	! Revision 1.1 1998/03/09 16:22:22 raasch
266	! Initial revision
267	!
268	!
269	! Description:
270	! ------------
271	!> Allocation of arrays and initialization of the 3D model via
272	!> a) pre-run the 1D model
273	!> or
274	!> b) pre-set constant linear profiles
275	!> or
276	!> c) read values of a previous run
277	!------------------------------------------------------------------------------!
278	SUBROUTINE init_3d_model
279
280
281	USE advec_ws
282
283	USE arrays_3d
284
285	USE constants, &
286	ONLY: pi
287
288	USE control_parameters
289
290	USE grid_variables, &
291	ONLY: dx, dy
292
293	USE indices
294
295	USE lpm_init_mod, &
296	ONLY: lpm_init
297
298	USE kinds
299
300	USE land_surface_model_mod, &
301	ONLY: lsm_init, lsm_init_arrays, land_surface
302
303	USE ls_forcing_mod
304
305	USE microphysics_mod, &
306	ONLY: collision_turbulence, microphysics_init
307
308	USE model_1d, &
309	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
310
311	USE netcdf_interface, &
312	ONLY: dots_max, dots_num
313
314	USE particle_attributes, &
315	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
316
317	USE pegrid
318
319	USE plant_canopy_model_mod, &
320	ONLY: pcm_init, plant_canopy
321
322	USE radiation_model_mod, &
323	ONLY: radiation_init, radiation
324
325	USE random_function_mod
326
327	USE random_generator_parallel, &
328	ONLY: random_number_parallel, random_seed_parallel, random_dummy, &
329	id_random_array, seq_random_array
330
331	USE statistics, &
332	ONLY: hom, hom_sum, mean_surface_level_height, pr_palm, rmask, &
333	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
334	sums_l_l, sums_up_fraction_l, sums_wsts_bc_l, ts_value, &
335	weight_pres, weight_substep
336
337	USE surface_layer_fluxes_mod, &
338	ONLY: init_surface_layer_fluxes
339
340	USE transpose_indices
341
342	USE wind_turbine_model_mod, &
343	ONLY: wtm_init, wtm_init_arrays, wind_turbine
344
345	IMPLICIT NONE
346
347	INTEGER(iwp) :: i !<
348	INTEGER(iwp) :: ind_array(1) !<
349	INTEGER(iwp) :: j !<
350	INTEGER(iwp) :: k !<
351	INTEGER(iwp) :: sr !<
352
353	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !<
354
355	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !<
356	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !<
357
358	REAL(wp), DIMENSION(1:3) :: volume_flow_area_l !<
359	REAL(wp), DIMENSION(1:3) :: volume_flow_initial_l !<
360
361	REAL(wp), DIMENSION(:), ALLOCATABLE :: mean_surface_level_height_l !<
362	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !<
363	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !<
364
365
366	CALL location_message( 'allocating arrays', .FALSE. )
367	!
368	!-- Allocate arrays
369	ALLOCATE( mean_surface_level_height(0:statistic_regions), &
370	mean_surface_level_height_l(0:statistic_regions), &
371	ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
372	ngp_3d(0:statistic_regions), &
373	ngp_3d_inner(0:statistic_regions), &
374	ngp_3d_inner_l(0:statistic_regions), &
375	ngp_3d_inner_tmp(0:statistic_regions), &
376	sums_divnew_l(0:statistic_regions), &
377	sums_divold_l(0:statistic_regions) )
378	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
379	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
380	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
381	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
382	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
383	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
384	sums(nzb:nzt+1,pr_palm+max_pr_user), &
385	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
386	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
387	sums_up_fraction_l(10,3,0:statistic_regions), &
388	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
389	ts_value(dots_max,0:statistic_regions) )
390	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
391
392	ALLOCATE( ol(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
393	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
394	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
395	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
396	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
397	z0h(nysg:nyng,nxlg:nxrg), z0q(nysg:nyng,nxlg:nxrg) )
398
399	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
400	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
401	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
402	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
403	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
404
405	#if defined( __nopointer )
406	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
407	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
408	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
409	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
410	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
411	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
412	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
413	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
414	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
415	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
416	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
417	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
418	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
419	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
420	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
421	#else
422	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
423	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
424	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
425	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
426	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
427	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
428	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
429	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
430	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
431	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
432	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
433	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
434	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
435	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
436	IF ( .NOT. neutral ) THEN
437	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
438	ENDIF
439	#endif
440
441	!
442	!-- Following array is required for perturbation pressure within the iterative
443	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
444	!-- the weighted average of the substeps and cannot be used in the Poisson
445	!-- solver.
446	IF ( psolver == 'sor' ) THEN
447	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
448	ELSEIF ( psolver(1:9) == 'multigrid' ) THEN
449	!
450	!-- For performance reasons, multigrid is using one ghost layer only
451	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
452	ENDIF
453
454	!
455	!-- Array for storing constant coeffficients of the tridiagonal solver
456	IF ( psolver == 'poisfft' ) THEN
457	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
458	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
459	ENDIF
460
461	IF ( humidity .OR. passive_scalar ) THEN
462	!
463	!-- 2D-humidity/scalar arrays
464	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
465	qsws(nysg:nyng,nxlg:nxrg), &
466	qswst(nysg:nyng,nxlg:nxrg) )
467
468	!
469	!-- 3D-humidity/scalar arrays
470	#if defined( __nopointer )
471	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
472	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
473	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
474	#else
475	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
476	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
477	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
478	#endif
479
480	!
481	!-- 3D-arrays needed for humidity only
482	IF ( humidity ) THEN
483	#if defined( __nopointer )
484	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
485	#else
486	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
487	#endif
488
489	IF ( cloud_physics ) THEN
490
491	!
492	!-- Liquid water content
493	#if defined( __nopointer )
494	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
495	#else
496	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
497	#endif
498	!
499	!-- Precipitation amount and rate (only needed if output is switched)
500	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
501	precipitation_rate(nysg:nyng,nxlg:nxrg) )
502
503	!
504	!-- 3D-cloud water content
505	#if defined( __nopointer )
506	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
507	#else
508	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
509	#endif
510	!
511	!-- 3d-precipitation rate
512	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
513
514	IF ( microphysics_seifert ) THEN
515	!
516	!-- 2D-rain water content and rain drop concentration arrays
517	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
518	qrsws(nysg:nyng,nxlg:nxrg), &
519	qrswst(nysg:nyng,nxlg:nxrg), &
520	nrs(nysg:nyng,nxlg:nxrg), &
521	nrsws(nysg:nyng,nxlg:nxrg), &
522	nrswst(nysg:nyng,nxlg:nxrg) )
523	!
524	!-- 3D-rain water content, rain drop concentration arrays
525	#if defined( __nopointer )
526	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
527	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
528	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
529	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
530	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
531	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
532	#else
533	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
534	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
535	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
536	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
537	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
538	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
539	#endif
540	ENDIF
541
542	ENDIF
543
544	IF ( cloud_droplets ) THEN
545	!
546	!-- Liquid water content, change in liquid water content
547	#if defined( __nopointer )
548	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
549	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
550	#else
551	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
552	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
553	#endif
554	!
555	!-- Real volume of particles (with weighting), volume of particles
556	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
557	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
558	ENDIF
559
560	ENDIF
561
562	ENDIF
563
564	IF ( ocean ) THEN
565	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
566	saswst(nysg:nyng,nxlg:nxrg) )
567	#if defined( __nopointer )
568	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
569	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
570	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
571	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
572	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
573	#else
574	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
575	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
576	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
577	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
578	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
579	prho => prho_1
580	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
581	! density to be apointer
582	#endif
583	IF ( humidity_remote ) THEN
584	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
585	qswst_remote = 0.0_wp
586	ENDIF
587	ENDIF
588
589	!
590	!-- 3D-array for storing the dissipation, needed for calculating the sgs
591	!-- particle velocities
592	IF ( use_sgs_for_particles .OR. wang_kernel .OR. collision_turbulence &
593	.OR. num_acc_per_node > 0 ) THEN
594	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
595	ENDIF
596
597	!
598	!-- 1D-array for large scale subsidence velocity
599	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
600	ALLOCATE ( w_subs(nzb:nzt+1) )
601	w_subs = 0.0_wp
602	ENDIF
603
604	!
605	!-- ID-array and state-space-array for the parallel random number generator
606	IF ( random_generator == 'random-parallel' ) THEN
607	ALLOCATE ( seq_random_array(5,nysg:nyng,nxlg:nxrg) )
608	ALLOCATE ( id_random_array(0:ny,0:nx) )
609	seq_random_array = 0
610	id_random_array = 0
611	ENDIF
612
613	!
614	!-- 4D-array for storing the Rif-values at vertical walls
615	IF ( topography /= 'flat' ) THEN
616	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
617	rif_wall = 0.0_wp
618	ENDIF
619
620	!
621	!-- Arrays to store velocity data from t-dt and the phase speeds which
622	!-- are needed for radiation boundary conditions
623	IF ( outflow_l ) THEN
624	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
625	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
626	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
627	ENDIF
628	IF ( outflow_r ) THEN
629	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
630	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
631	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
632	ENDIF
633	IF ( outflow_l .OR. outflow_r ) THEN
634	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
635	c_w(nzb:nzt+1,nysg:nyng) )
636	ENDIF
637	IF ( outflow_s ) THEN
638	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
639	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
640	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
641	ENDIF
642	IF ( outflow_n ) THEN
643	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
644	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
645	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
646	ENDIF
647	IF ( outflow_s .OR. outflow_n ) THEN
648	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
649	c_w(nzb:nzt+1,nxlg:nxrg) )
650	ENDIF
651	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
652	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
653	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
654	ENDIF
655
656
657	#if ! defined( __nopointer )
658	!
659	!-- Initial assignment of the pointers
660	e => e_1; e_p => e_2; te_m => e_3
661	IF ( .NOT. neutral ) THEN
662	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
663	ELSE
664	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
665	ENDIF
666	u => u_1; u_p => u_2; tu_m => u_3
667	v => v_1; v_p => v_2; tv_m => v_3
668	w => w_1; w_p => w_2; tw_m => w_3
669
670	IF ( humidity .OR. passive_scalar ) THEN
671	q => q_1; q_p => q_2; tq_m => q_3
672	IF ( humidity ) THEN
673	vpt => vpt_1
674	IF ( cloud_physics ) THEN
675	ql => ql_1
676	qc => qc_1
677	IF ( microphysics_seifert ) THEN
678	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
679	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
680	ENDIF
681	ENDIF
682	ENDIF
683	IF ( cloud_droplets ) THEN
684	ql => ql_1
685	ql_c => ql_2
686	ENDIF
687	ENDIF
688
689	IF ( ocean ) THEN
690	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
691	ENDIF
692	#endif
693
694	!
695	!-- Allocate land surface model arrays
696	IF ( land_surface ) THEN
697	CALL lsm_init_arrays
698	ENDIF
699
700	!
701	!-- Allocate wind turbine model arrays
702	IF ( wind_turbine ) THEN
703	CALL wtm_init_arrays
704	ENDIF
705
706	!
707	!-- Allocate arrays containing the RK coefficient for calculation of
708	!-- perturbation pressure and turbulent fluxes. At this point values are
709	!-- set for pressure calculation during initialization (where no timestep
710	!-- is done). Further below the values needed within the timestep scheme
711	!-- will be set.
712	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
713	weight_pres(1:intermediate_timestep_count_max) )
714	weight_substep = 1.0_wp
715	weight_pres = 1.0_wp
716	intermediate_timestep_count = 0 ! needed when simulated_time = 0.0
717
718	CALL location_message( 'finished', .TRUE. )
719
720	!
721	!-- Initialize local summation arrays for routine flow_statistics.
722	!-- This is necessary because they may not yet have been initialized when they
723	!-- are called from flow_statistics (or - depending on the chosen model run -
724	!-- are never initialized)
725	sums_divnew_l = 0.0_wp
726	sums_divold_l = 0.0_wp
727	sums_l_l = 0.0_wp
728	sums_up_fraction_l = 0.0_wp
729	sums_wsts_bc_l = 0.0_wp
730
731
732	!
733	!-- Initialize model variables
734	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
735	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
736	!
737	!-- First model run of a possible job queue.
738	!-- Initial profiles of the variables must be computes.
739	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
740
741	CALL location_message( 'initializing with 1D model profiles', .FALSE. )
742	!
743	!-- Use solutions of the 1D model as initial profiles,
744	!-- start 1D model
745	CALL init_1d_model
746	!
747	!-- Transfer initial profiles to the arrays of the 3D model
748	DO i = nxlg, nxrg
749	DO j = nysg, nyng
750	e(:,j,i) = e1d
751	kh(:,j,i) = kh1d
752	km(:,j,i) = km1d
753	pt(:,j,i) = pt_init
754	u(:,j,i) = u1d
755	v(:,j,i) = v1d
756	ENDDO
757	ENDDO
758
759	IF ( humidity .OR. passive_scalar ) THEN
760	DO i = nxlg, nxrg
761	DO j = nysg, nyng
762	q(:,j,i) = q_init
763	ENDDO
764	ENDDO
765	IF ( cloud_physics .AND. microphysics_seifert ) THEN
766	DO i = nxlg, nxrg
767	DO j = nysg, nyng
768	qr(:,j,i) = 0.0_wp
769	nr(:,j,i) = 0.0_wp
770	ENDDO
771	ENDDO
772
773	ENDIF
774	ENDIF
775
776	IF ( .NOT. constant_diffusion ) THEN
777	DO i = nxlg, nxrg
778	DO j = nysg, nyng
779	e(:,j,i) = e1d
780	ENDDO
781	ENDDO
782	!
783	!-- Store initial profiles for output purposes etc.
784	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
785
786	IF ( constant_flux_layer ) THEN
787	ol = ( zu(nzb+1) - zw(nzb) ) / ( rif1d(nzb+1) + 1.0E-20_wp )
788	ts = 0.0_wp ! could actually be computed more accurately in the
789	! 1D model. Update when opportunity arises.
790	us = us1d
791	usws = usws1d
792	vsws = vsws1d
793	ELSE
794	ts = 0.0_wp ! must be set, because used in
795	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
796	us = 0.0_wp
797	usws = 0.0_wp
798	vsws = 0.0_wp
799	ENDIF
800
801	ELSE
802	e = 0.0_wp ! must be set, because used in
803	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
804	ts = 0.0_wp
805	us = 0.0_wp
806	usws = 0.0_wp
807	vsws = 0.0_wp
808	ENDIF
809	uswst = top_momentumflux_u
810	vswst = top_momentumflux_v
811
812	!
813	!-- In every case qs = 0.0 (see also pt)
814	!-- This could actually be computed more accurately in the 1D model.
815	!-- Update when opportunity arises!
816	IF ( humidity .OR. passive_scalar ) THEN
817	qs = 0.0_wp
818	IF ( cloud_physics .AND. microphysics_seifert ) THEN
819	qrs = 0.0_wp
820	nrs = 0.0_wp
821	ENDIF
822	ENDIF
823
824	!
825	!-- Inside buildings set velocities back to zero
826	IF ( topography /= 'flat' ) THEN
827	DO i = nxlg, nxrg
828	DO j = nysg, nyng
829	u(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
830	v(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
831	ENDDO
832	ENDDO
833
834	!
835	!-- WARNING: The extra boundary conditions set after running the
836	!-- ------- 1D model impose an error on the divergence one layer
837	!-- below the topography; need to correct later
838	!-- ATTENTION: Provisional correction for Piacsek & Williams
839	!-- --------- advection scheme: keep u and v zero one layer below
840	!-- the topography.
841	IF ( ibc_uv_b == 1 ) THEN
842	!
843	!-- Neumann condition
844	DO i = nxl-1, nxr+1
845	DO j = nys-1, nyn+1
846	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
847	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
848	ENDDO
849	ENDDO
850
851	ENDIF
852
853	ENDIF
854
855	CALL location_message( 'finished', .TRUE. )
856
857	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
858	THEN
859
860	CALL location_message( 'initializing with constant profiles', .FALSE. )
861	!
862	!-- Overwrite initial profiles in case of nudging
863	IF ( nudging ) THEN
864	pt_init = ptnudge(:,1)
865	u_init = unudge(:,1)
866	v_init = vnudge(:,1)
867	IF ( humidity .OR. passive_scalar ) THEN
868	q_init = qnudge(:,1)
869	ENDIF
870
871	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
872	'scalars from NUDGING_DATA are used.'
873	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
874	ENDIF
875
876	!
877	!-- Use constructed initial profiles (velocity constant with height,
878	!-- temperature profile with constant gradient)
879	DO i = nxlg, nxrg
880	DO j = nysg, nyng
881	pt(:,j,i) = pt_init
882	u(:,j,i) = u_init
883	v(:,j,i) = v_init
884	ENDDO
885	ENDDO
886
887	!
888	!-- Set initial horizontal velocities at the lowest computational grid
889	!-- levels to zero in order to avoid too small time steps caused by the
890	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
891	!-- in the limiting formula!).
892	IF ( ibc_uv_b /= 1 ) THEN
893	DO i = nxlg, nxrg
894	DO j = nysg, nyng
895	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0_wp
896	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0_wp
897	ENDDO
898	ENDDO
899	ENDIF
900
901	IF ( humidity .OR. passive_scalar ) THEN
902	DO i = nxlg, nxrg
903	DO j = nysg, nyng
904	q(:,j,i) = q_init
905	ENDDO
906	ENDDO
907	IF ( cloud_physics .AND. microphysics_seifert ) THEN
908
909	DO i = nxlg, nxrg
910	DO j = nysg, nyng
911	qr(:,j,i) = 0.0_wp
912	nr(:,j,i) = 0.0_wp
913	ENDDO
914	ENDDO
915
916	ENDIF
917	ENDIF
918
919	IF ( ocean ) THEN
920	DO i = nxlg, nxrg
921	DO j = nysg, nyng
922	sa(:,j,i) = sa_init
923	ENDDO
924	ENDDO
925	ENDIF
926
927	IF ( constant_diffusion ) THEN
928	km = km_constant
929	kh = km / prandtl_number
930	e = 0.0_wp
931	ELSEIF ( e_init > 0.0_wp ) THEN
932	DO k = nzb+1, nzt
933	km(k,:,:) = 0.1_wp * l_grid(k) * SQRT( e_init )
934	ENDDO
935	km(nzb,:,:) = km(nzb+1,:,:)
936	km(nzt+1,:,:) = km(nzt,:,:)
937	kh = km / prandtl_number
938	e = e_init
939	ELSE
940	IF ( .NOT. ocean ) THEN
941	kh = 0.01_wp ! there must exist an initial diffusion, because
942	km = 0.01_wp ! otherwise no TKE would be produced by the
943	! production terms, as long as not yet
944	! e = (u/cm)*2 at k=nzb+1
945	ELSE
946	kh = 0.00001_wp
947	km = 0.00001_wp
948	ENDIF
949	e = 0.0_wp
950	ENDIF
951	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min
952	ts = 0.0_wp
953	us = 0.0_wp
954	usws = 0.0_wp
955	uswst = top_momentumflux_u
956	vsws = 0.0_wp
957	vswst = top_momentumflux_v
958	IF ( humidity .OR. passive_scalar ) qs = 0.0_wp
959
960	!
961	!-- Compute initial temperature field and other constants used in case
962	!-- of a sloping surface
963	IF ( sloping_surface ) CALL init_slope
964
965	CALL location_message( 'finished', .TRUE. )
966
967	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
968	THEN
969
970	CALL location_message( 'initializing by user', .FALSE. )
971	!
972	!-- Initialization will completely be done by the user
973	CALL user_init_3d_model
974
975	CALL location_message( 'finished', .TRUE. )
976
977	ENDIF
978
979	CALL location_message( 'initializing statistics, boundary conditions, etc.', &
980	.FALSE. )
981
982	!
983	!-- Bottom boundary
984	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
985	u(nzb,:,:) = 0.0_wp
986	v(nzb,:,:) = 0.0_wp
987	ENDIF
988
989	!
990	!-- Apply channel flow boundary condition
991	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
992	u(nzt+1,:,:) = 0.0_wp
993	v(nzt+1,:,:) = 0.0_wp
994	ENDIF
995
996	!
997	!-- Calculate virtual potential temperature
998	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
999
1000	!
1001	!-- Store initial profiles for output purposes etc.
1002	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
1003	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
1004	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
1005	hom(nzb,1,5,:) = 0.0_wp
1006	hom(nzb,1,6,:) = 0.0_wp
1007	ENDIF
1008	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1009	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
1010	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
1011
1012	IF ( ocean ) THEN
1013	!
1014	!-- Store initial salinity profile
1015	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
1016	ENDIF
1017
1018	IF ( humidity ) THEN
1019	!
1020	!-- Store initial profile of total water content, virtual potential
1021	!-- temperature
1022	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1023	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
1024	IF ( cloud_physics .OR. cloud_droplets ) THEN
1025	!
1026	!-- Store initial profile of specific humidity and potential
1027	!-- temperature
1028	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1029	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1030	ENDIF
1031	ENDIF
1032
1033	IF ( passive_scalar ) THEN
1034	!
1035	!-- Store initial scalar profile
1036	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1037	ENDIF
1038
1039	!
1040	!-- Initialize the random number generators (from numerical recipes)
1041	CALL random_function_ini
1042
1043	IF ( random_generator == 'random-parallel' ) THEN
1044	!-- Asigning an ID to every vertical gridpoint column
1045	!-- dependig on the ensemble run number.
1046	random_dummy=1
1047	DO j=0,ny
1048	DO i=0,nx
1049	id_random_array(j,i) = random_dummy + 1E6 &
1050	* ( ensemble_member_nr - 1000 )
1051	random_dummy = random_dummy + 1
1052	END DO
1053	ENDDO
1054	!-- Initializing with random_seed_parallel for every vertical
1055	!-- gridpoint column.
1056	random_dummy=0
1057	DO j = nysg, nyng
1058	DO i = nxlg, nxrg
1059	CALL random_seed_parallel (random_sequence=id_random_array(j, i))
1060	CALL random_number_parallel (random_dummy)
1061	CALL random_seed_parallel (get=seq_random_array(:, j, i))
1062	END DO
1063	ENDDO
1064	ENDIF
1065
1066	!
1067	!-- Initialize fluxes at bottom surface
1068	IF ( use_surface_fluxes ) THEN
1069
1070	IF ( constant_heatflux ) THEN
1071	!
1072	!-- Heat flux is prescribed
1073	IF ( random_heatflux ) THEN
1074	CALL disturb_heatflux
1075	ELSE
1076	shf = surface_heatflux
1077	!
1078	!-- Initialize shf with data from external file LSF_DATA
1079	IF ( large_scale_forcing .AND. lsf_surf ) THEN
1080	CALL ls_forcing_surf ( simulated_time )
1081	ENDIF
1082
1083	!
1084	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
1085	IF ( TRIM( topography ) /= 'flat' ) THEN
1086	DO i = nxlg, nxrg
1087	DO j = nysg, nyng
1088	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1089	shf(j,i) = wall_heatflux(0)
1090	ENDIF
1091	ENDDO
1092	ENDDO
1093	ENDIF
1094	ENDIF
1095	ENDIF
1096
1097	!
1098	!-- Determine the near-surface water flux
1099	IF ( humidity .OR. passive_scalar ) THEN
1100	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1101	qrsws = 0.0_wp
1102	nrsws = 0.0_wp
1103	ENDIF
1104	IF ( constant_waterflux ) THEN
1105	qsws = surface_waterflux
1106	!
1107	!-- Over topography surface_waterflux is replaced by
1108	!-- wall_humidityflux(0)
1109	IF ( TRIM( topography ) /= 'flat' ) THEN
1110	wall_qflux = wall_humidityflux
1111	DO i = nxlg, nxrg
1112	DO j = nysg, nyng
1113	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1114	qsws(j,i) = wall_qflux(0)
1115	ENDIF
1116	ENDDO
1117	ENDDO
1118	ENDIF
1119	ENDIF
1120	ENDIF
1121
1122	ENDIF
1123
1124	!
1125	!-- Initialize fluxes at top surface
1126	!-- Currently, only the heatflux and salinity flux can be prescribed.
1127	!-- The latent flux is zero in this case!
1128	IF ( use_top_fluxes ) THEN
1129
1130	IF ( constant_top_heatflux ) THEN
1131	!
1132	!-- Heat flux is prescribed
1133	tswst = top_heatflux
1134
1135	IF ( humidity .OR. passive_scalar ) THEN
1136	qswst = 0.0_wp
1137	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1138	nrswst = 0.0_wp
1139	qrswst = 0.0_wp
1140	ENDIF
1141	ENDIF
1142
1143	IF ( ocean ) THEN
1144	saswsb = bottom_salinityflux
1145	saswst = top_salinityflux
1146	ENDIF
1147	ENDIF
1148
1149	!
1150	!-- Initialization in case of a coupled model run
1151	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1152	tswst = 0.0_wp
1153	ENDIF
1154
1155	ENDIF
1156
1157	!
1158	!-- Initialize Prandtl layer quantities
1159	IF ( constant_flux_layer ) THEN
1160
1161	z0 = roughness_length
1162	z0h = z0h_factor * z0
1163	z0q = z0h_factor * z0
1164
1165	IF ( .NOT. constant_heatflux ) THEN
1166	!
1167	!-- Surface temperature is prescribed. Here the heat flux cannot be
1168	!-- simply estimated, because therefore ol, u* and theta* would have
1169	!-- to be computed by iteration. This is why the heat flux is assumed
1170	!-- to be zero before the first time step. It approaches its correct
1171	!-- value in the course of the first few time steps.
1172	shf = 0.0_wp
1173	ENDIF
1174
1175	IF ( humidity .OR. passive_scalar ) THEN
1176	IF ( .NOT. constant_waterflux ) qsws = 0.0_wp
1177	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1178	qrsws = 0.0_wp
1179	nrsws = 0.0_wp
1180	ENDIF
1181	ENDIF
1182
1183	ENDIF
1184
1185	!
1186	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1187	!-- the reference state will be set (overwritten) in init_ocean)
1188	IF ( use_single_reference_value ) THEN
1189	IF ( .NOT. humidity ) THEN
1190	ref_state(:) = pt_reference
1191	ELSE
1192	ref_state(:) = vpt_reference
1193	ENDIF
1194	ELSE
1195	IF ( .NOT. humidity ) THEN
1196	ref_state(:) = pt_init(:)
1197	ELSE
1198	ref_state(:) = vpt(:,nys,nxl)
1199	ENDIF
1200	ENDIF
1201
1202	!
1203	!-- For the moment, vertical velocity is zero
1204	w = 0.0_wp
1205
1206	!
1207	!-- Initialize array sums (must be defined in first call of pres)
1208	sums = 0.0_wp
1209
1210	!
1211	!-- In case of iterative solvers, p must get an initial value
1212	IF ( psolver(1:9) == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
1213
1214	!
1215	!-- Treating cloud physics, liquid water content and precipitation amount
1216	!-- are zero at beginning of the simulation
1217	IF ( cloud_physics ) THEN
1218	ql = 0.0_wp
1219	qc = 0.0_wp
1220
1221	precipitation_amount = 0.0_wp
1222	ENDIF
1223	!
1224	!-- Impose vortex with vertical axis on the initial velocity profile
1225	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1226	CALL init_rankine
1227	ENDIF
1228
1229	!
1230	!-- Impose temperature anomaly (advection test only)
1231	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1232	CALL init_pt_anomaly
1233	ENDIF
1234
1235	!
1236	!-- If required, change the surface temperature at the start of the 3D run
1237	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
1238	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1239	ENDIF
1240
1241	!
1242	!-- If required, change the surface humidity/scalar at the start of the 3D
1243	!-- run
1244	IF ( ( humidity .OR. passive_scalar ) .AND. &
1245	q_surface_initial_change /= 0.0_wp ) THEN
1246	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1247	ENDIF
1248
1249	!
1250	!-- Initialize old and new time levels.
1251	te_m = 0.0_wp; tpt_m = 0.0_wp; tu_m = 0.0_wp; tv_m = 0.0_wp; tw_m = 0.0_wp
1252	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1253
1254	IF ( humidity .OR. passive_scalar ) THEN
1255	tq_m = 0.0_wp
1256	q_p = q
1257	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1258	tqr_m = 0.0_wp
1259	qr_p = qr
1260	tnr_m = 0.0_wp
1261	nr_p = nr
1262	ENDIF
1263	ENDIF
1264
1265	IF ( ocean ) THEN
1266	tsa_m = 0.0_wp
1267	sa_p = sa
1268	ENDIF
1269
1270	CALL location_message( 'finished', .TRUE. )
1271
1272	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1273	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1274	THEN
1275
1276	CALL location_message( 'initializing in case of restart / cyclic_fill', &
1277	.FALSE. )
1278	!
1279	!-- When reading data for cyclic fill of 3D prerun data files, read
1280	!-- some of the global variables from the restart file which are required
1281	!-- for initializing the inflow
1282	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1283
1284	DO i = 0, io_blocks-1
1285	IF ( i == io_group ) THEN
1286	CALL read_parts_of_var_list
1287	CALL close_file( 13 )
1288	ENDIF
1289	#if defined( __parallel )
1290	CALL MPI_BARRIER( comm2d, ierr )
1291	#endif
1292	ENDDO
1293
1294	ENDIF
1295
1296	!
1297	!-- Read binary data from restart file
1298	DO i = 0, io_blocks-1
1299	IF ( i == io_group ) THEN
1300	CALL read_3d_binary
1301	ENDIF
1302	#if defined( __parallel )
1303	CALL MPI_BARRIER( comm2d, ierr )
1304	#endif
1305	ENDDO
1306
1307	!
1308	!-- Initialization of the turbulence recycling method
1309	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1310	turbulent_inflow ) THEN
1311	!
1312	!-- First store the profiles to be used at the inflow.
1313	!-- These profiles are the (temporally) and horizontally averaged vertical
1314	!-- profiles from the prerun. Alternatively, prescribed profiles
1315	!-- for u,v-components can be used.
1316	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,6) )
1317
1318	IF ( use_prescribed_profile_data ) THEN
1319	mean_inflow_profiles(:,1) = u_init ! u
1320	mean_inflow_profiles(:,2) = v_init ! v
1321	ELSE
1322	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1323	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1324	ENDIF
1325	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1326	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1327	mean_inflow_profiles(:,6) = hom_sum(:,41,0) ! q
1328
1329	!
1330	!-- If necessary, adjust the horizontal flow field to the prescribed
1331	!-- profiles
1332	IF ( use_prescribed_profile_data ) THEN
1333	DO i = nxlg, nxrg
1334	DO j = nysg, nyng
1335	DO k = nzb, nzt+1
1336	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1337	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1338	ENDDO
1339	ENDDO
1340	ENDDO
1341	ENDIF
1342
1343	!
1344	!-- Use these mean profiles at the inflow (provided that Dirichlet
1345	!-- conditions are used)
1346	IF ( inflow_l ) THEN
1347	DO j = nysg, nyng
1348	DO k = nzb, nzt+1
1349	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1350	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1351	w(k,j,nxlg:-1) = 0.0_wp
1352	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1353	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1354	IF ( humidity .OR. passive_scalar ) &
1355	q(k,j,nxlg:-1) = mean_inflow_profiles(k,6)
1356	ENDDO
1357	ENDDO
1358	ENDIF
1359
1360	!
1361	!-- Calculate the damping factors to be used at the inflow. For a
1362	!-- turbulent inflow the turbulent fluctuations have to be limited
1363	!-- vertically because otherwise the turbulent inflow layer will grow
1364	!-- in time.
1365	IF ( inflow_damping_height == 9999999.9_wp ) THEN
1366	!
1367	!-- Default: use the inversion height calculated by the prerun; if
1368	!-- this is zero, inflow_damping_height must be explicitly
1369	!-- specified.
1370	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
1371	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1372	ELSE
1373	WRITE( message_string, * ) 'inflow_damping_height must be ', &
1374	'explicitly specified because&the inversion height ', &
1375	'calculated by the prerun is zero.'
1376	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1377	ENDIF
1378
1379	ENDIF
1380
1381	IF ( inflow_damping_width == 9999999.9_wp ) THEN
1382	!
1383	!-- Default for the transition range: one tenth of the undamped
1384	!-- layer
1385	inflow_damping_width = 0.1_wp * inflow_damping_height
1386
1387	ENDIF
1388
1389	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1390
1391	DO k = nzb, nzt+1
1392
1393	IF ( zu(k) <= inflow_damping_height ) THEN
1394	inflow_damping_factor(k) = 1.0_wp
1395	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1396	inflow_damping_factor(k) = 1.0_wp - &
1397	( zu(k) - inflow_damping_height ) / &
1398	inflow_damping_width
1399	ELSE
1400	inflow_damping_factor(k) = 0.0_wp
1401	ENDIF
1402
1403	ENDDO
1404
1405	ENDIF
1406
1407	!
1408	!-- Inside buildings set velocities and TKE back to zero
1409	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1410	topography /= 'flat' ) THEN
1411	!
1412	!-- Inside buildings set velocities and TKE back to zero.
1413	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1414	!-- maybe revise later.
1415	DO i = nxlg, nxrg
1416	DO j = nysg, nyng
1417	u (nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1418	v (nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1419	w (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1420	e (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1421	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1422	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1423	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1424	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1425	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1426	ENDDO
1427	ENDDO
1428
1429	ENDIF
1430
1431	!
1432	!-- Calculate initial temperature field and other constants used in case
1433	!-- of a sloping surface
1434	IF ( sloping_surface ) CALL init_slope
1435
1436	!
1437	!-- Initialize new time levels (only done in order to set boundary values
1438	!-- including ghost points)
1439	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1440	IF ( humidity .OR. passive_scalar ) THEN
1441	q_p = q
1442	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1443	qr_p = qr
1444	nr_p = nr
1445	ENDIF
1446	ENDIF
1447	IF ( ocean ) sa_p = sa
1448
1449	!
1450	!-- Allthough tendency arrays are set in prognostic_equations, they have
1451	!-- have to be predefined here because they are used (but multiplied with 0)
1452	!-- there before they are set.
1453	te_m = 0.0_wp; tpt_m = 0.0_wp; tu_m = 0.0_wp; tv_m = 0.0_wp; tw_m = 0.0_wp
1454	IF ( humidity .OR. passive_scalar ) THEN
1455	tq_m = 0.0_wp
1456	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1457	tqr_m = 0.0_wp
1458	tnr_m = 0.0_wp
1459	ENDIF
1460	ENDIF
1461	IF ( ocean ) tsa_m = 0.0_wp
1462
1463	CALL location_message( 'finished', .TRUE. )
1464
1465	ELSE
1466	!
1467	!-- Actually this part of the programm should not be reached
1468	message_string = 'unknown initializing problem'
1469	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1470	ENDIF
1471
1472
1473	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1474	!
1475	!-- Initialize old timelevels needed for radiation boundary conditions
1476	IF ( outflow_l ) THEN
1477	u_m_l(:,:,:) = u(:,:,1:2)
1478	v_m_l(:,:,:) = v(:,:,0:1)
1479	w_m_l(:,:,:) = w(:,:,0:1)
1480	ENDIF
1481	IF ( outflow_r ) THEN
1482	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1483	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1484	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1485	ENDIF
1486	IF ( outflow_s ) THEN
1487	u_m_s(:,:,:) = u(:,0:1,:)
1488	v_m_s(:,:,:) = v(:,1:2,:)
1489	w_m_s(:,:,:) = w(:,0:1,:)
1490	ENDIF
1491	IF ( outflow_n ) THEN
1492	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1493	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1494	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1495	ENDIF
1496
1497	ENDIF
1498
1499	!
1500	!-- Calculate the initial volume flow at the right and north boundary
1501	IF ( conserve_volume_flow ) THEN
1502
1503	IF ( use_prescribed_profile_data ) THEN
1504
1505	volume_flow_initial_l = 0.0_wp
1506	volume_flow_area_l = 0.0_wp
1507
1508	IF ( nxr == nx ) THEN
1509	DO j = nys, nyn
1510	DO k = nzb_u_inner(j,nx)+1, nzt
1511	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1512	u_init(k) * dzw(k)
1513	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1514	ENDDO
1515	ENDDO
1516	ENDIF
1517
1518	IF ( nyn == ny ) THEN
1519	DO i = nxl, nxr
1520	DO k = nzb_v_inner(ny,i)+1, nzt
1521	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1522	v_init(k) * dzw(k)
1523	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1524	ENDDO
1525	ENDDO
1526	ENDIF
1527
1528	#if defined( __parallel )
1529	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1530	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1531	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1532	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1533
1534	#else
1535	volume_flow_initial = volume_flow_initial_l
1536	volume_flow_area = volume_flow_area_l
1537	#endif
1538
1539	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1540
1541	volume_flow_initial_l = 0.0_wp
1542	volume_flow_area_l = 0.0_wp
1543
1544	IF ( nxr == nx ) THEN
1545	DO j = nys, nyn
1546	DO k = nzb_u_inner(j,nx)+1, nzt
1547	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1548	hom_sum(k,1,0) * dzw(k)
1549	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1550	ENDDO
1551	ENDDO
1552	ENDIF
1553
1554	IF ( nyn == ny ) THEN
1555	DO i = nxl, nxr
1556	DO k = nzb_v_inner(ny,i)+1, nzt
1557	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1558	hom_sum(k,2,0) * dzw(k)
1559	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1560	ENDDO
1561	ENDDO
1562	ENDIF
1563
1564	#if defined( __parallel )
1565	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1566	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1567	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1568	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1569
1570	#else
1571	volume_flow_initial = volume_flow_initial_l
1572	volume_flow_area = volume_flow_area_l
1573	#endif
1574
1575	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1576
1577	volume_flow_initial_l = 0.0_wp
1578	volume_flow_area_l = 0.0_wp
1579
1580	IF ( nxr == nx ) THEN
1581	DO j = nys, nyn
1582	DO k = nzb_u_inner(j,nx)+1, nzt
1583	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1584	u(k,j,nx) * dzw(k)
1585	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1586	ENDDO
1587	ENDDO
1588	ENDIF
1589
1590	IF ( nyn == ny ) THEN
1591	DO i = nxl, nxr
1592	DO k = nzb_v_inner(ny,i)+1, nzt
1593	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1594	v(k,ny,i) * dzw(k)
1595	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1596	ENDDO
1597	ENDDO
1598	ENDIF
1599
1600	#if defined( __parallel )
1601	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1602	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1603	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1604	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1605
1606	#else
1607	volume_flow_initial = volume_flow_initial_l
1608	volume_flow_area = volume_flow_area_l
1609	#endif
1610
1611	ENDIF
1612
1613	!
1614	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1615	!-- from u\|v_bulk instead
1616	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1617	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1618	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1619	ENDIF
1620
1621	ENDIF
1622
1623	!
1624	!-- Initialize quantities for special advections schemes
1625	CALL init_advec
1626
1627	!
1628	!-- Impose random perturbation on the horizontal velocity field and then
1629	!-- remove the divergences from the velocity field at the initial stage
1630	IF ( create_disturbances .AND. disturbance_energy_limit /= 0.0_wp .AND. &
1631	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1632	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1633
1634	CALL location_message( 'creating initial disturbances', .FALSE. )
1635	CALL disturb_field( nzb_u_inner, tend, u )
1636	CALL disturb_field( nzb_v_inner, tend, v )
1637	CALL location_message( 'finished', .TRUE. )
1638
1639	CALL location_message( 'calling pressure solver', .FALSE. )
1640	n_sor = nsor_ini
1641	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1642	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1643	!$acc copyin( weight_pres, weight_substep ) &
1644	!$acc copy( tri, tric, u, v, w )
1645	CALL pres
1646	!$acc end data
1647	n_sor = nsor
1648	CALL location_message( 'finished', .TRUE. )
1649
1650	ENDIF
1651
1652	!
1653	!-- If required, initialize quantities needed for the plant canopy model
1654	CALL location_message( 'initializing plant canopy model', .FALSE. )
1655	IF ( plant_canopy ) CALL pcm_init
1656	CALL location_message( 'finished', .TRUE. )
1657
1658	!
1659	!-- If required, initialize dvrp-software
1660	IF ( dt_dvrp /= 9999999.9_wp ) CALL init_dvrp
1661
1662	IF ( ocean ) THEN
1663	!
1664	!-- Initialize quantities needed for the ocean model
1665	CALL init_ocean
1666
1667	ELSE
1668	!
1669	!-- Initialize quantities for handling cloud physics
1670	!-- This routine must be called before lpm_init, because
1671	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1672	!-- lpm_init) is not defined.
1673	CALL init_cloud_physics
1674	!
1675	!-- Initialize bulk cloud microphysics
1676	CALL microphysics_init
1677	ENDIF
1678
1679	!
1680	!-- If required, initialize particles
1681	IF ( particle_advection ) CALL lpm_init
1682
1683	!
1684	!-- If required, initialize quantities needed for the LSM
1685	IF ( land_surface ) THEN
1686	CALL location_message( 'initializing land surface model', .FALSE. )
1687	CALL lsm_init
1688	CALL location_message( 'finished', .TRUE. )
1689	ENDIF
1690
1691	!
1692	!-- Initialize surface layer (done after LSM as roughness length are required
1693	!-- for initialization
1694	IF ( constant_flux_layer ) THEN
1695	CALL location_message( 'initializing surface layer', .FALSE. )
1696	CALL init_surface_layer_fluxes
1697	CALL location_message( 'finished', .TRUE. )
1698	ENDIF
1699
1700	!
1701	!-- If required, initialize radiation model
1702	IF ( radiation ) THEN
1703	CALL location_message( 'initializing radiation model', .FALSE. )
1704	CALL radiation_init
1705	CALL location_message( 'finished', .TRUE. )
1706	ENDIF
1707
1708	!
1709	!-- If required, initialize quantities needed for the wind turbine model
1710	IF ( wind_turbine ) THEN
1711	CALL location_message( 'initializing wind turbine model', .FALSE. )
1712	CALL wtm_init
1713	CALL location_message( 'finished', .TRUE. )
1714	ENDIF
1715
1716
1717	!
1718	!-- Initialize the ws-scheme.
1719	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1720
1721	!
1722	!-- Setting weighting factors for calculation of perturbation pressure
1723	!-- and turbulent quantities from the RK substeps
1724	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1725
1726	weight_substep(1) = 1._wp/6._wp
1727	weight_substep(2) = 3._wp/10._wp
1728	weight_substep(3) = 8._wp/15._wp
1729
1730	weight_pres(1) = 1._wp/3._wp
1731	weight_pres(2) = 5._wp/12._wp
1732	weight_pres(3) = 1._wp/4._wp
1733
1734	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1735
1736	weight_substep(1) = 1._wp/2._wp
1737	weight_substep(2) = 1._wp/2._wp
1738
1739	weight_pres(1) = 1._wp/2._wp
1740	weight_pres(2) = 1._wp/2._wp
1741
1742	ELSE ! for Euler-method
1743
1744	weight_substep(1) = 1.0_wp
1745	weight_pres(1) = 1.0_wp
1746
1747	ENDIF
1748
1749	!
1750	!-- Initialize Rayleigh damping factors
1751	rdf = 0.0_wp
1752	rdf_sc = 0.0_wp
1753	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
1754	IF ( .NOT. ocean ) THEN
1755	DO k = nzb+1, nzt
1756	IF ( zu(k) >= rayleigh_damping_height ) THEN
1757	rdf(k) = rayleigh_damping_factor * &
1758	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
1759	/ ( zu(nzt) - rayleigh_damping_height ) ) &
1760	)**2
1761	ENDIF
1762	ENDDO
1763	ELSE
1764	DO k = nzt, nzb+1, -1
1765	IF ( zu(k) <= rayleigh_damping_height ) THEN
1766	rdf(k) = rayleigh_damping_factor * &
1767	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
1768	/ ( rayleigh_damping_height - zu(nzb+1) ) ) &
1769	)**2
1770	ENDIF
1771	ENDDO
1772	ENDIF
1773	ENDIF
1774	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1775
1776	!
1777	!-- Initialize the starting level and the vertical smoothing factor used for
1778	!-- the external pressure gradient
1779	dp_smooth_factor = 1.0_wp
1780	IF ( dp_external ) THEN
1781	!
1782	!-- Set the starting level dp_level_ind_b only if it has not been set before
1783	!-- (e.g. in init_grid).
1784	IF ( dp_level_ind_b == 0 ) THEN
1785	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1786	dp_level_ind_b = ind_array(1) - 1 + nzb
1787	! MINLOC uses lower array bound 1
1788	ENDIF
1789	IF ( dp_smooth ) THEN
1790	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
1791	DO k = dp_level_ind_b+1, nzt
1792	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
1793	( REAL( k - dp_level_ind_b, KIND=wp ) / &
1794	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
1795	ENDDO
1796	ENDIF
1797	ENDIF
1798
1799	!
1800	!-- Initialize damping zone for the potential temperature in case of
1801	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1802	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1803	ptdf_x = 0.0_wp
1804	ptdf_y = 0.0_wp
1805	IF ( bc_lr_dirrad ) THEN
1806	DO i = nxl, nxr
1807	IF ( ( i * dx ) < pt_damping_width ) THEN
1808	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
1809	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
1810	REAL( pt_damping_width, KIND=wp ) ) ) )**2
1811	ENDIF
1812	ENDDO
1813	ELSEIF ( bc_lr_raddir ) THEN
1814	DO i = nxl, nxr
1815	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1816	ptdf_x(i) = pt_damping_factor * &
1817	SIN( pi * 0.5_wp * &
1818	( ( i - nx ) * dx + pt_damping_width ) / &
1819	REAL( pt_damping_width, KIND=wp ) )**2
1820	ENDIF
1821	ENDDO
1822	ELSEIF ( bc_ns_dirrad ) THEN
1823	DO j = nys, nyn
1824	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1825	ptdf_y(j) = pt_damping_factor * &
1826	SIN( pi * 0.5_wp * &
1827	( ( j - ny ) * dy + pt_damping_width ) / &
1828	REAL( pt_damping_width, KIND=wp ) )**2
1829	ENDIF
1830	ENDDO
1831	ELSEIF ( bc_ns_raddir ) THEN
1832	DO j = nys, nyn
1833	IF ( ( j * dy ) < pt_damping_width ) THEN
1834	ptdf_y(j) = pt_damping_factor * &
1835	SIN( pi * 0.5_wp * &
1836	( pt_damping_width - j * dy ) / &
1837	REAL( pt_damping_width, KIND=wp ) )**2
1838	ENDIF
1839	ENDDO
1840	ENDIF
1841
1842	!
1843	!-- Pre-set masks for regional statistics. Default is the total model domain.
1844	!-- Ghost points are excluded because counting values at the ghost boundaries
1845	!-- would bias the statistics
1846	rmask = 1.0_wp
1847	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
1848	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
1849
1850	!
1851	!-- User-defined initializing actions. Check afterwards, if maximum number
1852	!-- of allowed timeseries is exceeded
1853	CALL user_init
1854
1855	IF ( dots_num > dots_max ) THEN
1856	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1857	' its maximum of dots_max = ', dots_max, &
1858	' &Please increase dots_max in modules.f90.'
1859	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1860	ENDIF
1861
1862	!
1863	!-- Input binary data file is not needed anymore. This line must be placed
1864	!-- after call of user_init!
1865	CALL close_file( 13 )
1866
1867	!
1868	!-- Compute total sum of active mask grid points
1869	!-- and the mean surface level height for each statistic region
1870	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1871	!-- total domain
1872	!-- ngp_3d: number of grid points of the total domain
1873	ngp_2dh_outer_l = 0
1874	ngp_2dh_outer = 0
1875	ngp_2dh_s_inner_l = 0
1876	ngp_2dh_s_inner = 0
1877	ngp_2dh_l = 0
1878	ngp_2dh = 0
1879	ngp_3d_inner_l = 0.0_wp
1880	ngp_3d_inner = 0
1881	ngp_3d = 0
1882	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1883
1884	mean_surface_level_height = 0.0_wp
1885	mean_surface_level_height_l = 0.0_wp
1886
1887	DO sr = 0, statistic_regions
1888	DO i = nxl, nxr
1889	DO j = nys, nyn
1890	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
1891	!
1892	!-- All xy-grid points
1893	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1894	mean_surface_level_height_l(sr) = mean_surface_level_height_l(sr) &
1895	+ zw(nzb_s_inner(j,i))
1896	!
1897	!-- xy-grid points above topography
1898	DO k = nzb_s_outer(j,i), nz + 1
1899	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1900	ENDDO
1901	DO k = nzb_s_inner(j,i), nz + 1
1902	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1903	ENDDO
1904	!
1905	!-- All grid points of the total domain above topography
1906	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) &
1907	+ ( nz - nzb_s_inner(j,i) + 2 )
1908	ENDIF
1909	ENDDO
1910	ENDDO
1911	ENDDO
1912
1913	sr = statistic_regions + 1
1914	#if defined( __parallel )
1915	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1916	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1917	comm2d, ierr )
1918	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1919	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1920	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1921	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1922	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1923	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1924	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1925	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1926	MPI_SUM, comm2d, ierr )
1927	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1928	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1929	CALL MPI_ALLREDUCE( mean_surface_level_height_l(0), &
1930	mean_surface_level_height(0), sr, MPI_REAL, &
1931	MPI_SUM, comm2d, ierr )
1932	mean_surface_level_height = mean_surface_level_height / REAL( ngp_2dh )
1933	#else
1934	ngp_2dh = ngp_2dh_l
1935	ngp_2dh_outer = ngp_2dh_outer_l
1936	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1937	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1938	mean_surface_level_height = mean_surface_level_height_l / REAL( ngp_2dh_l )
1939	#endif
1940
1941	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1942	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1943
1944	!
1945	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1946	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1947	!-- the respective subdomain lie below the surface topography
1948	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1949	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1950	ngp_3d_inner(:) )
1951	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1952
1953	DEALLOCATE( mean_surface_level_height_l, ngp_2dh_l, ngp_2dh_outer_l, &
1954	ngp_3d_inner_l, ngp_3d_inner_tmp )
1955
1956	CALL location_message( 'leaving init_3d_model', .TRUE. )
1957
1958	END SUBROUTINE init_3d_model

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