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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1920

Last change on this file since 1920 was 1920, checked in by suehring, 8 years ago

Avoid segmentation fault (see change in 1915) by different initialization of us instead of adding a very small number in the denominator

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/palm/branches/forwind/SOURCE/init_3d_model.f90 1564-1913

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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	! Initialize us with very small number to avoid segmentation fault during
22	! calculation of Obukhov length
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: init_3d_model.f90 1920 2016-05-30 10:50:15Z suehring $
27	!
28	! 1918 2016-05-27 14:35:57Z raasch
29	! intermediate_timestep_count is set 0 instead 1 for first call of pres,
30	! bugfix: initialization of local sum arrays are moved to the beginning of the
31	! routine because otherwise results from pres are overwritten
32	!
33	! 1914 2016-05-26 14:44:07Z witha
34	! Added initialization of the wind turbine model
35	!
36	! 1878 2016-04-19 12:30:36Z hellstea
37	! The zeroth element of weight_pres removed as unnecessary
38	!
39	! 1849 2016-04-08 11:33:18Z hoffmann
40	! Adapted for modularization of microphysics.
41	! precipitation_amount, precipitation_rate, prr moved to arrays_3d.
42	! Initialization of nc_1d, nr_1d, pt_1d, qc_1d, qr_1d, q_1d moved to
43	! microphysics_init.
44	!
45	! 1845 2016-04-08 08:29:13Z raasch
46	! nzb_2d replaced by nzb_u\|v_inner
47	!
48	! 1833 2016-04-07 14:23:03Z raasch
49	! initialization of spectra quantities moved to spectra_mod
50	!
51	! 1831 2016-04-07 13:15:51Z hoffmann
52	! turbulence renamed collision_turbulence
53	!
54	! 1826 2016-04-07 12:01:39Z maronga
55	! Renamed radiation calls.
56	! Renamed canopy model calls.
57	!
58	! 1822 2016-04-07 07:49:42Z hoffmann
59	! icloud_scheme replaced by microphysics_*
60	!
61	! 1817 2016-04-06 15:44:20Z maronga
62	! Renamed lsm calls.
63	!
64	! 1815 2016-04-06 13:49:59Z raasch
65	! zero-settings for velocities inside topography re-activated (was deactivated
66	! in r1762)
67	!
68	! 1788 2016-03-10 11:01:04Z maronga
69	! Added z0q.
70	! Syntax layout improved.
71	!
72	! 1783 2016-03-06 18:36:17Z raasch
73	! netcdf module name changed + related changes
74	!
75	! 1764 2016-02-28 12:45:19Z raasch
76	! bugfix: increase size of volume_flow_area_l and volume_flow_initial_l by 1
77	!
78	! 1762 2016-02-25 12:31:13Z hellstea
79	! Introduction of nested domain feature
80	!
81	! 1738 2015-12-18 13:56:05Z raasch
82	! calculate mean surface level height for each statistic region
83	!
84	! 1734 2015-12-02 12:17:12Z raasch
85	! no initial disturbances in case that the disturbance energy limit has been
86	! set zero
87	!
88	! 1707 2015-11-02 15:24:52Z maronga
89	! Bugfix: transfer of Richardson number from 1D model to Obukhov length caused
90	! devision by zero in neutral stratification
91	!
92	! 1691 2015-10-26 16:17:44Z maronga
93	! Call to init_surface_layer added. rif is replaced by ol and zeta.
94	!
95	! 1682 2015-10-07 23:56:08Z knoop
96	! Code annotations made doxygen readable
97	!
98	! 1615 2015-07-08 18:49:19Z suehring
99	! Enable turbulent inflow for passive_scalar and humidity
100	!
101	! 1585 2015-04-30 07:05:52Z maronga
102	! Initialization of radiation code is now done after LSM initializtion
103	!
104	! 1575 2015-03-27 09:56:27Z raasch
105	! adjustments for psolver-queries
106	!
107	! 1551 2015-03-03 14:18:16Z maronga
108	! Allocation of land surface arrays is now done in the subroutine lsm_init_arrays,
109	! which is part of land_surface_model.
110	!
111	! 1507 2014-12-10 12:14:18Z suehring
112	! Bugfix: set horizontal velocity components to zero inside topography
113	!
114	! 1496 2014-12-02 17:25:50Z maronga
115	! Added initialization of the land surface and radiation schemes
116	!
117	! 1484 2014-10-21 10:53:05Z kanani
118	! Changes due to new module structure of the plant canopy model:
119	! canopy-related initialization (e.g. lad and canopy_heat_flux) moved to new
120	! subroutine init_plant_canopy within the module plant_canopy_model_mod,
121	! call of subroutine init_plant_canopy added.
122	!
123	! 1431 2014-07-15 14:47:17Z suehring
124	! var_d added, in order to normalize spectra.
125	!
126	! 1429 2014-07-15 12:53:45Z knoop
127	! Ensemble run capability added to parallel random number generator
128	!
129	! 1411 2014-05-16 18:01:51Z suehring
130	! Initial horizontal velocity profiles were not set to zero at the first vertical
131	! grid level in case of non-cyclic lateral boundary conditions.
132	!
133	! 1406 2014-05-16 13:47:01Z raasch
134	! bugfix: setting of initial velocities at k=1 to zero not in case of a
135	! no-slip boundary condition for uv
136	!
137	! 1402 2014-05-09 14:25:13Z raasch
138	! location messages modified
139	!
140	! 1400 2014-05-09 14:03:54Z knoop
141	! Parallel random number generator added
142	!
143	! 1384 2014-05-02 14:31:06Z raasch
144	! location messages added
145	!
146	! 1361 2014-04-16 15:17:48Z hoffmann
147	! tend_* removed
148	! Bugfix: w_subs is not allocated anymore if it is already allocated
149	!
150	! 1359 2014-04-11 17:15:14Z hoffmann
151	! module lpm_init_mod added to use statements, because lpm_init has become a
152	! module
153	!
154	! 1353 2014-04-08 15:21:23Z heinze
155	! REAL constants provided with KIND-attribute
156	!
157	! 1340 2014-03-25 19:45:13Z kanani
158	! REAL constants defined as wp-kind
159	!
160	! 1322 2014-03-20 16:38:49Z raasch
161	! REAL constants defined as wp-kind
162	! module interfaces removed
163	!
164	! 1320 2014-03-20 08:40:49Z raasch
165	! ONLY-attribute added to USE-statements,
166	! kind-parameters added to all INTEGER and REAL declaration statements,
167	! kinds are defined in new module kinds,
168	! revision history before 2012 removed,
169	! comment fields (!:) to be used for variable explanations added to
170	! all variable declaration statements
171	!
172	! 1316 2014-03-17 07:44:59Z heinze
173	! Bugfix: allocation of w_subs
174	!
175	! 1299 2014-03-06 13:15:21Z heinze
176	! Allocate w_subs due to extension of large scale subsidence in combination
177	! with large scale forcing data (LSF_DATA)
178	!
179	! 1241 2013-10-30 11:36:58Z heinze
180	! Overwrite initial profiles in case of nudging
181	! Inititialize shf and qsws in case of large_scale_forcing
182	!
183	! 1221 2013-09-10 08:59:13Z raasch
184	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
185	! copy
186	!
187	! 1212 2013-08-15 08:46:27Z raasch
188	! array tri is allocated and included in data copy statement
189	!
190	! 1195 2013-07-01 12:27:57Z heinze
191	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
192	!
193	! 1179 2013-06-14 05:57:58Z raasch
194	! allocate and set ref_state to be used in buoyancy terms
195	!
196	! 1171 2013-05-30 11:27:45Z raasch
197	! diss array is allocated with full size if accelerator boards are used
198	!
199	! 1159 2013-05-21 11:58:22Z fricke
200	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
201	!
202	! 1153 2013-05-10 14:33:08Z raasch
203	! diss array is allocated with dummy elements even if it is not needed
204	! (required by PGI 13.4 / CUDA 5.0)
205	!
206	! 1115 2013-03-26 18:16:16Z hoffmann
207	! unused variables removed
208	!
209	! 1113 2013-03-10 02:48:14Z raasch
210	! openACC directive modified
211	!
212	! 1111 2013-03-08 23:54:10Z raasch
213	! openACC directives added for pres
214	! array diss allocated only if required
215	!
216	! 1092 2013-02-02 11:24:22Z raasch
217	! unused variables removed
218	!
219	! 1065 2012-11-22 17:42:36Z hoffmann
220	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
221	!
222	! 1053 2012-11-13 17:11:03Z hoffmann
223	! allocation and initialisation of necessary data arrays for the two-moment
224	! cloud physics scheme the two new prognostic equations (nr, qr):
225	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
226	! +tend_*, prr
227	!
228	! 1036 2012-10-22 13:43:42Z raasch
229	! code put under GPL (PALM 3.9)
230	!
231	! 1032 2012-10-21 13:03:21Z letzel
232	! save memory by not allocating pt_2 in case of neutral = .T.
233	!
234	! 1025 2012-10-07 16:04:41Z letzel
235	! bugfix: swap indices of mask for ghost boundaries
236	!
237	! 1015 2012-09-27 09:23:24Z raasch
238	! mask is set to zero for ghost boundaries
239	!
240	! 1010 2012-09-20 07:59:54Z raasch
241	! cpp switch __nopointer added for pointer free version
242	!
243	! 1003 2012-09-14 14:35:53Z raasch
244	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
245	!
246	! 1001 2012-09-13 14:08:46Z raasch
247	! all actions concerning leapfrog scheme removed
248	!
249	! 996 2012-09-07 10:41:47Z raasch
250	! little reformatting
251	!
252	! 978 2012-08-09 08:28:32Z fricke
253	! outflow damping layer removed
254	! roughness length for scalar quantites z0h added
255	! damping zone for the potential temperatur in case of non-cyclic lateral
256	! boundaries added
257	! initialization of ptdf_x, ptdf_y
258	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
259	!
260	! 849 2012-03-15 10:35:09Z raasch
261	! init_particles renamed lpm_init
262	!
263	! 825 2012-02-19 03:03:44Z raasch
264	! wang_collision_kernel renamed wang_kernel
265	!
266	! Revision 1.1 1998/03/09 16:22:22 raasch
267	! Initial revision
268	!
269	!
270	! Description:
271	! ------------
272	!> Allocation of arrays and initialization of the 3D model via
273	!> a) pre-run the 1D model
274	!> or
275	!> b) pre-set constant linear profiles
276	!> or
277	!> c) read values of a previous run
278	!------------------------------------------------------------------------------!
279	SUBROUTINE init_3d_model
280
281
282	USE advec_ws
283
284	USE arrays_3d
285
286	USE constants, &
287	ONLY: pi
288
289	USE control_parameters
290
291	USE grid_variables, &
292	ONLY: dx, dy
293
294	USE indices
295
296	USE lpm_init_mod, &
297	ONLY: lpm_init
298
299	USE kinds
300
301	USE land_surface_model_mod, &
302	ONLY: lsm_init, lsm_init_arrays, land_surface
303
304	USE ls_forcing_mod
305
306	USE microphysics_mod, &
307	ONLY: collision_turbulence, microphysics_init
308
309	USE model_1d, &
310	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
311
312	USE netcdf_interface, &
313	ONLY: dots_max, dots_num
314
315	USE particle_attributes, &
316	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
317
318	USE pegrid
319
320	USE plant_canopy_model_mod, &
321	ONLY: pcm_init, plant_canopy
322
323	USE radiation_model_mod, &
324	ONLY: radiation_init, radiation
325
326	USE random_function_mod
327
328	USE random_generator_parallel, &
329	ONLY: random_number_parallel, random_seed_parallel, random_dummy, &
330	id_random_array, seq_random_array
331
332	USE statistics, &
333	ONLY: hom, hom_sum, mean_surface_level_height, pr_palm, rmask, &
334	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
335	sums_l_l, sums_up_fraction_l, sums_wsts_bc_l, ts_value, &
336	weight_pres, weight_substep
337
338	USE surface_layer_fluxes_mod, &
339	ONLY: init_surface_layer_fluxes
340
341	USE transpose_indices
342
343	USE wind_turbine_model_mod, &
344	ONLY: wtm_init, wtm_init_arrays, wind_turbine
345
346	IMPLICIT NONE
347
348	INTEGER(iwp) :: i !<
349	INTEGER(iwp) :: ind_array(1) !<
350	INTEGER(iwp) :: j !<
351	INTEGER(iwp) :: k !<
352	INTEGER(iwp) :: sr !<
353
354	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !<
355
356	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !<
357	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !<
358
359	REAL(wp), DIMENSION(1:3) :: volume_flow_area_l !<
360	REAL(wp), DIMENSION(1:3) :: volume_flow_initial_l !<
361
362	REAL(wp), DIMENSION(:), ALLOCATABLE :: mean_surface_level_height_l !<
363	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !<
364	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !<
365
366
367	CALL location_message( 'allocating arrays', .FALSE. )
368	!
369	!-- Allocate arrays
370	ALLOCATE( mean_surface_level_height(0:statistic_regions), &
371	mean_surface_level_height_l(0:statistic_regions), &
372	ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
373	ngp_3d(0:statistic_regions), &
374	ngp_3d_inner(0:statistic_regions), &
375	ngp_3d_inner_l(0:statistic_regions), &
376	ngp_3d_inner_tmp(0:statistic_regions), &
377	sums_divnew_l(0:statistic_regions), &
378	sums_divold_l(0:statistic_regions) )
379	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
380	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
381	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
382	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
383	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
384	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
385	sums(nzb:nzt+1,pr_palm+max_pr_user), &
386	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
387	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
388	sums_up_fraction_l(10,3,0:statistic_regions), &
389	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
390	ts_value(dots_max,0:statistic_regions) )
391	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
392
393	ALLOCATE( ol(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
394	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
395	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
396	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
397	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
398	z0h(nysg:nyng,nxlg:nxrg), z0q(nysg:nyng,nxlg:nxrg) )
399
400	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
401	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
402	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
403	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
404	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
405
406	#if defined( __nopointer )
407	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
408	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
409	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
410	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
411	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
412	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
413	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
414	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
415	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
416	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
417	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
418	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
419	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
420	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
421	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
422	#else
423	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
424	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
425	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
426	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
427	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
428	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
429	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
430	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
431	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
432	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
433	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
434	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
435	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
436	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
437	IF ( .NOT. neutral ) THEN
438	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
439	ENDIF
440	#endif
441
442	!
443	!-- Following array is required for perturbation pressure within the iterative
444	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
445	!-- the weighted average of the substeps and cannot be used in the Poisson
446	!-- solver.
447	IF ( psolver == 'sor' ) THEN
448	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
449	ELSEIF ( psolver(1:9) == 'multigrid' ) THEN
450	!
451	!-- For performance reasons, multigrid is using one ghost layer only
452	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
453	ENDIF
454
455	!
456	!-- Array for storing constant coeffficients of the tridiagonal solver
457	IF ( psolver == 'poisfft' ) THEN
458	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
459	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
460	ENDIF
461
462	IF ( humidity .OR. passive_scalar ) THEN
463	!
464	!-- 2D-humidity/scalar arrays
465	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
466	qsws(nysg:nyng,nxlg:nxrg), &
467	qswst(nysg:nyng,nxlg:nxrg) )
468
469	!
470	!-- 3D-humidity/scalar arrays
471	#if defined( __nopointer )
472	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
473	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
474	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
475	#else
476	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
477	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
478	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
479	#endif
480
481	!
482	!-- 3D-arrays needed for humidity only
483	IF ( humidity ) THEN
484	#if defined( __nopointer )
485	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
486	#else
487	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
488	#endif
489
490	IF ( cloud_physics ) THEN
491
492	!
493	!-- Liquid water content
494	#if defined( __nopointer )
495	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
496	#else
497	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
498	#endif
499	!
500	!-- Precipitation amount and rate (only needed if output is switched)
501	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
502	precipitation_rate(nysg:nyng,nxlg:nxrg) )
503
504	!
505	!-- 3D-cloud water content
506	#if defined( __nopointer )
507	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
508	#else
509	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
510	#endif
511	!
512	!-- 3d-precipitation rate
513	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
514
515	IF ( microphysics_seifert ) THEN
516	!
517	!-- 2D-rain water content and rain drop concentration arrays
518	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
519	qrsws(nysg:nyng,nxlg:nxrg), &
520	qrswst(nysg:nyng,nxlg:nxrg), &
521	nrs(nysg:nyng,nxlg:nxrg), &
522	nrsws(nysg:nyng,nxlg:nxrg), &
523	nrswst(nysg:nyng,nxlg:nxrg) )
524	!
525	!-- 3D-rain water content, rain drop concentration arrays
526	#if defined( __nopointer )
527	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
528	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
529	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
530	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
531	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
532	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
533	#else
534	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
535	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
536	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
537	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
538	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
539	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
540	#endif
541	ENDIF
542
543	ENDIF
544
545	IF ( cloud_droplets ) THEN
546	!
547	!-- Liquid water content, change in liquid water content
548	#if defined( __nopointer )
549	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
550	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
551	#else
552	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
553	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
554	#endif
555	!
556	!-- Real volume of particles (with weighting), volume of particles
557	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
558	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
559	ENDIF
560
561	ENDIF
562
563	ENDIF
564
565	IF ( ocean ) THEN
566	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
567	saswst(nysg:nyng,nxlg:nxrg) )
568	#if defined( __nopointer )
569	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
570	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
571	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
572	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
573	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
574	#else
575	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
576	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
577	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
578	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
579	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
580	prho => prho_1
581	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
582	! density to be apointer
583	#endif
584	IF ( humidity_remote ) THEN
585	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
586	qswst_remote = 0.0_wp
587	ENDIF
588	ENDIF
589
590	!
591	!-- 3D-array for storing the dissipation, needed for calculating the sgs
592	!-- particle velocities
593	IF ( use_sgs_for_particles .OR. wang_kernel .OR. collision_turbulence &
594	.OR. num_acc_per_node > 0 ) THEN
595	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
596	ENDIF
597
598	!
599	!-- 1D-array for large scale subsidence velocity
600	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
601	ALLOCATE ( w_subs(nzb:nzt+1) )
602	w_subs = 0.0_wp
603	ENDIF
604
605	!
606	!-- ID-array and state-space-array for the parallel random number generator
607	IF ( random_generator == 'random-parallel' ) THEN
608	ALLOCATE ( seq_random_array(5,nysg:nyng,nxlg:nxrg) )
609	ALLOCATE ( id_random_array(0:ny,0:nx) )
610	seq_random_array = 0
611	id_random_array = 0
612	ENDIF
613
614	!
615	!-- 4D-array for storing the Rif-values at vertical walls
616	IF ( topography /= 'flat' ) THEN
617	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
618	rif_wall = 0.0_wp
619	ENDIF
620
621	!
622	!-- Arrays to store velocity data from t-dt and the phase speeds which
623	!-- are needed for radiation boundary conditions
624	IF ( outflow_l ) THEN
625	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
626	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
627	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
628	ENDIF
629	IF ( outflow_r ) THEN
630	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
631	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
632	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
633	ENDIF
634	IF ( outflow_l .OR. outflow_r ) THEN
635	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
636	c_w(nzb:nzt+1,nysg:nyng) )
637	ENDIF
638	IF ( outflow_s ) THEN
639	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
640	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
641	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
642	ENDIF
643	IF ( outflow_n ) THEN
644	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
645	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
646	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
647	ENDIF
648	IF ( outflow_s .OR. outflow_n ) THEN
649	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
650	c_w(nzb:nzt+1,nxlg:nxrg) )
651	ENDIF
652	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
653	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
654	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
655	ENDIF
656
657
658	#if ! defined( __nopointer )
659	!
660	!-- Initial assignment of the pointers
661	e => e_1; e_p => e_2; te_m => e_3
662	IF ( .NOT. neutral ) THEN
663	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
664	ELSE
665	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
666	ENDIF
667	u => u_1; u_p => u_2; tu_m => u_3
668	v => v_1; v_p => v_2; tv_m => v_3
669	w => w_1; w_p => w_2; tw_m => w_3
670
671	IF ( humidity .OR. passive_scalar ) THEN
672	q => q_1; q_p => q_2; tq_m => q_3
673	IF ( humidity ) THEN
674	vpt => vpt_1
675	IF ( cloud_physics ) THEN
676	ql => ql_1
677	qc => qc_1
678	IF ( microphysics_seifert ) THEN
679	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
680	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
681	ENDIF
682	ENDIF
683	ENDIF
684	IF ( cloud_droplets ) THEN
685	ql => ql_1
686	ql_c => ql_2
687	ENDIF
688	ENDIF
689
690	IF ( ocean ) THEN
691	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
692	ENDIF
693	#endif
694
695	!
696	!-- Allocate land surface model arrays
697	IF ( land_surface ) THEN
698	CALL lsm_init_arrays
699	ENDIF
700
701	!
702	!-- Allocate wind turbine model arrays
703	IF ( wind_turbine ) THEN
704	CALL wtm_init_arrays
705	ENDIF
706
707	!
708	!-- Allocate arrays containing the RK coefficient for calculation of
709	!-- perturbation pressure and turbulent fluxes. At this point values are
710	!-- set for pressure calculation during initialization (where no timestep
711	!-- is done). Further below the values needed within the timestep scheme
712	!-- will be set.
713	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
714	weight_pres(1:intermediate_timestep_count_max) )
715	weight_substep = 1.0_wp
716	weight_pres = 1.0_wp
717	intermediate_timestep_count = 0 ! needed when simulated_time = 0.0
718
719	CALL location_message( 'finished', .TRUE. )
720
721	!
722	!-- Initialize local summation arrays for routine flow_statistics.
723	!-- This is necessary because they may not yet have been initialized when they
724	!-- are called from flow_statistics (or - depending on the chosen model run -
725	!-- are never initialized)
726	sums_divnew_l = 0.0_wp
727	sums_divold_l = 0.0_wp
728	sums_l_l = 0.0_wp
729	sums_up_fraction_l = 0.0_wp
730	sums_wsts_bc_l = 0.0_wp
731
732
733	!
734	!-- Initialize model variables
735	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
736	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
737	!
738	!-- First model run of a possible job queue.
739	!-- Initial profiles of the variables must be computes.
740	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
741
742	CALL location_message( 'initializing with 1D model profiles', .FALSE. )
743	!
744	!-- Use solutions of the 1D model as initial profiles,
745	!-- start 1D model
746	CALL init_1d_model
747	!
748	!-- Transfer initial profiles to the arrays of the 3D model
749	DO i = nxlg, nxrg
750	DO j = nysg, nyng
751	e(:,j,i) = e1d
752	kh(:,j,i) = kh1d
753	km(:,j,i) = km1d
754	pt(:,j,i) = pt_init
755	u(:,j,i) = u1d
756	v(:,j,i) = v1d
757	ENDDO
758	ENDDO
759
760	IF ( humidity .OR. passive_scalar ) THEN
761	DO i = nxlg, nxrg
762	DO j = nysg, nyng
763	q(:,j,i) = q_init
764	ENDDO
765	ENDDO
766	IF ( cloud_physics .AND. microphysics_seifert ) THEN
767	DO i = nxlg, nxrg
768	DO j = nysg, nyng
769	qr(:,j,i) = 0.0_wp
770	nr(:,j,i) = 0.0_wp
771	ENDDO
772	ENDDO
773
774	ENDIF
775	ENDIF
776
777	IF ( .NOT. constant_diffusion ) THEN
778	DO i = nxlg, nxrg
779	DO j = nysg, nyng
780	e(:,j,i) = e1d
781	ENDDO
782	ENDDO
783	!
784	!-- Store initial profiles for output purposes etc.
785	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
786
787	IF ( constant_flux_layer ) THEN
788	ol = ( zu(nzb+1) - zw(nzb) ) / ( rif1d(nzb+1) + 1.0E-20_wp )
789	ts = 0.0_wp ! could actually be computed more accurately in the
790	! 1D model. Update when opportunity arises.
791	us = us1d
792	usws = usws1d
793	vsws = vsws1d
794	ELSE
795	ts = 0.0_wp ! must be set, because used in
796	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
797	us = 0.0_wp
798	usws = 0.0_wp
799	vsws = 0.0_wp
800	ENDIF
801
802	ELSE
803	e = 0.0_wp ! must be set, because used in
804	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
805	ts = 0.0_wp
806	us = 0.0_wp
807	usws = 0.0_wp
808	vsws = 0.0_wp
809	ENDIF
810	uswst = top_momentumflux_u
811	vswst = top_momentumflux_v
812
813	!
814	!-- In every case qs = 0.0 (see also pt)
815	!-- This could actually be computed more accurately in the 1D model.
816	!-- Update when opportunity arises!
817	IF ( humidity .OR. passive_scalar ) THEN
818	qs = 0.0_wp
819	IF ( cloud_physics .AND. microphysics_seifert ) THEN
820	qrs = 0.0_wp
821	nrs = 0.0_wp
822	ENDIF
823	ENDIF
824
825	!
826	!-- Inside buildings set velocities back to zero
827	IF ( topography /= 'flat' ) THEN
828	DO i = nxlg, nxrg
829	DO j = nysg, nyng
830	u(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
831	v(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
832	ENDDO
833	ENDDO
834
835	!
836	!-- WARNING: The extra boundary conditions set after running the
837	!-- ------- 1D model impose an error on the divergence one layer
838	!-- below the topography; need to correct later
839	!-- ATTENTION: Provisional correction for Piacsek & Williams
840	!-- --------- advection scheme: keep u and v zero one layer below
841	!-- the topography.
842	IF ( ibc_uv_b == 1 ) THEN
843	!
844	!-- Neumann condition
845	DO i = nxl-1, nxr+1
846	DO j = nys-1, nyn+1
847	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
848	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
849	ENDDO
850	ENDDO
851
852	ENDIF
853
854	ENDIF
855
856	CALL location_message( 'finished', .TRUE. )
857
858	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
859	THEN
860
861	CALL location_message( 'initializing with constant profiles', .FALSE. )
862	!
863	!-- Overwrite initial profiles in case of nudging
864	IF ( nudging ) THEN
865	pt_init = ptnudge(:,1)
866	u_init = unudge(:,1)
867	v_init = vnudge(:,1)
868	IF ( humidity .OR. passive_scalar ) THEN
869	q_init = qnudge(:,1)
870	ENDIF
871
872	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
873	'scalars from NUDGING_DATA are used.'
874	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
875	ENDIF
876
877	!
878	!-- Use constructed initial profiles (velocity constant with height,
879	!-- temperature profile with constant gradient)
880	DO i = nxlg, nxrg
881	DO j = nysg, nyng
882	pt(:,j,i) = pt_init
883	u(:,j,i) = u_init
884	v(:,j,i) = v_init
885	ENDDO
886	ENDDO
887
888	!
889	!-- Set initial horizontal velocities at the lowest computational grid
890	!-- levels to zero in order to avoid too small time steps caused by the
891	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
892	!-- in the limiting formula!).
893	IF ( ibc_uv_b /= 1 ) THEN
894	DO i = nxlg, nxrg
895	DO j = nysg, nyng
896	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0_wp
897	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0_wp
898	ENDDO
899	ENDDO
900	ENDIF
901
902	IF ( humidity .OR. passive_scalar ) THEN
903	DO i = nxlg, nxrg
904	DO j = nysg, nyng
905	q(:,j,i) = q_init
906	ENDDO
907	ENDDO
908	IF ( cloud_physics .AND. microphysics_seifert ) THEN
909
910	DO i = nxlg, nxrg
911	DO j = nysg, nyng
912	qr(:,j,i) = 0.0_wp
913	nr(:,j,i) = 0.0_wp
914	ENDDO
915	ENDDO
916
917	ENDIF
918	ENDIF
919
920	IF ( ocean ) THEN
921	DO i = nxlg, nxrg
922	DO j = nysg, nyng
923	sa(:,j,i) = sa_init
924	ENDDO
925	ENDDO
926	ENDIF
927
928	IF ( constant_diffusion ) THEN
929	km = km_constant
930	kh = km / prandtl_number
931	e = 0.0_wp
932	ELSEIF ( e_init > 0.0_wp ) THEN
933	DO k = nzb+1, nzt
934	km(k,:,:) = 0.1_wp * l_grid(k) * SQRT( e_init )
935	ENDDO
936	km(nzb,:,:) = km(nzb+1,:,:)
937	km(nzt+1,:,:) = km(nzt,:,:)
938	kh = km / prandtl_number
939	e = e_init
940	ELSE
941	IF ( .NOT. ocean ) THEN
942	kh = 0.01_wp ! there must exist an initial diffusion, because
943	km = 0.01_wp ! otherwise no TKE would be produced by the
944	! production terms, as long as not yet
945	! e = (u/cm)*2 at k=nzb+1
946	ELSE
947	kh = 0.00001_wp
948	km = 0.00001_wp
949	ENDIF
950	e = 0.0_wp
951	ENDIF
952	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min
953	ts = 0.0_wp
954	!
955	!-- Very small number is required for calculation of Obukhov length
956	!-- at first timestep
957	us = 1E-30_wp
958	usws = 0.0_wp
959	uswst = top_momentumflux_u
960	vsws = 0.0_wp
961	vswst = top_momentumflux_v
962	IF ( humidity .OR. passive_scalar ) qs = 0.0_wp
963
964	!
965	!-- Compute initial temperature field and other constants used in case
966	!-- of a sloping surface
967	IF ( sloping_surface ) CALL init_slope
968
969	CALL location_message( 'finished', .TRUE. )
970
971	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
972	THEN
973
974	CALL location_message( 'initializing by user', .FALSE. )
975	!
976	!-- Initialization will completely be done by the user
977	CALL user_init_3d_model
978
979	CALL location_message( 'finished', .TRUE. )
980
981	ENDIF
982
983	CALL location_message( 'initializing statistics, boundary conditions, etc.', &
984	.FALSE. )
985
986	!
987	!-- Bottom boundary
988	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
989	u(nzb,:,:) = 0.0_wp
990	v(nzb,:,:) = 0.0_wp
991	ENDIF
992
993	!
994	!-- Apply channel flow boundary condition
995	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
996	u(nzt+1,:,:) = 0.0_wp
997	v(nzt+1,:,:) = 0.0_wp
998	ENDIF
999
1000	!
1001	!-- Calculate virtual potential temperature
1002	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
1003
1004	!
1005	!-- Store initial profiles for output purposes etc.
1006	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
1007	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
1008	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
1009	hom(nzb,1,5,:) = 0.0_wp
1010	hom(nzb,1,6,:) = 0.0_wp
1011	ENDIF
1012	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1013	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
1014	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
1015
1016	IF ( ocean ) THEN
1017	!
1018	!-- Store initial salinity profile
1019	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
1020	ENDIF
1021
1022	IF ( humidity ) THEN
1023	!
1024	!-- Store initial profile of total water content, virtual potential
1025	!-- temperature
1026	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1027	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
1028	IF ( cloud_physics .OR. cloud_droplets ) THEN
1029	!
1030	!-- Store initial profile of specific humidity and potential
1031	!-- temperature
1032	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1033	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1034	ENDIF
1035	ENDIF
1036
1037	IF ( passive_scalar ) THEN
1038	!
1039	!-- Store initial scalar profile
1040	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1041	ENDIF
1042
1043	!
1044	!-- Initialize the random number generators (from numerical recipes)
1045	CALL random_function_ini
1046
1047	IF ( random_generator == 'random-parallel' ) THEN
1048	!-- Asigning an ID to every vertical gridpoint column
1049	!-- dependig on the ensemble run number.
1050	random_dummy=1
1051	DO j=0,ny
1052	DO i=0,nx
1053	id_random_array(j,i) = random_dummy + 1E6 &
1054	* ( ensemble_member_nr - 1000 )
1055	random_dummy = random_dummy + 1
1056	END DO
1057	ENDDO
1058	!-- Initializing with random_seed_parallel for every vertical
1059	!-- gridpoint column.
1060	random_dummy=0
1061	DO j = nysg, nyng
1062	DO i = nxlg, nxrg
1063	CALL random_seed_parallel (random_sequence=id_random_array(j, i))
1064	CALL random_number_parallel (random_dummy)
1065	CALL random_seed_parallel (get=seq_random_array(:, j, i))
1066	END DO
1067	ENDDO
1068	ENDIF
1069
1070	!
1071	!-- Initialize fluxes at bottom surface
1072	IF ( use_surface_fluxes ) THEN
1073
1074	IF ( constant_heatflux ) THEN
1075	!
1076	!-- Heat flux is prescribed
1077	IF ( random_heatflux ) THEN
1078	CALL disturb_heatflux
1079	ELSE
1080	shf = surface_heatflux
1081	!
1082	!-- Initialize shf with data from external file LSF_DATA
1083	IF ( large_scale_forcing .AND. lsf_surf ) THEN
1084	CALL ls_forcing_surf ( simulated_time )
1085	ENDIF
1086
1087	!
1088	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
1089	IF ( TRIM( topography ) /= 'flat' ) THEN
1090	DO i = nxlg, nxrg
1091	DO j = nysg, nyng
1092	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1093	shf(j,i) = wall_heatflux(0)
1094	ENDIF
1095	ENDDO
1096	ENDDO
1097	ENDIF
1098	ENDIF
1099	ENDIF
1100
1101	!
1102	!-- Determine the near-surface water flux
1103	IF ( humidity .OR. passive_scalar ) THEN
1104	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1105	qrsws = 0.0_wp
1106	nrsws = 0.0_wp
1107	ENDIF
1108	IF ( constant_waterflux ) THEN
1109	qsws = surface_waterflux
1110	!
1111	!-- Over topography surface_waterflux is replaced by
1112	!-- wall_humidityflux(0)
1113	IF ( TRIM( topography ) /= 'flat' ) THEN
1114	wall_qflux = wall_humidityflux
1115	DO i = nxlg, nxrg
1116	DO j = nysg, nyng
1117	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1118	qsws(j,i) = wall_qflux(0)
1119	ENDIF
1120	ENDDO
1121	ENDDO
1122	ENDIF
1123	ENDIF
1124	ENDIF
1125
1126	ENDIF
1127
1128	!
1129	!-- Initialize fluxes at top surface
1130	!-- Currently, only the heatflux and salinity flux can be prescribed.
1131	!-- The latent flux is zero in this case!
1132	IF ( use_top_fluxes ) THEN
1133
1134	IF ( constant_top_heatflux ) THEN
1135	!
1136	!-- Heat flux is prescribed
1137	tswst = top_heatflux
1138
1139	IF ( humidity .OR. passive_scalar ) THEN
1140	qswst = 0.0_wp
1141	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1142	nrswst = 0.0_wp
1143	qrswst = 0.0_wp
1144	ENDIF
1145	ENDIF
1146
1147	IF ( ocean ) THEN
1148	saswsb = bottom_salinityflux
1149	saswst = top_salinityflux
1150	ENDIF
1151	ENDIF
1152
1153	!
1154	!-- Initialization in case of a coupled model run
1155	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1156	tswst = 0.0_wp
1157	ENDIF
1158
1159	ENDIF
1160
1161	!
1162	!-- Initialize Prandtl layer quantities
1163	IF ( constant_flux_layer ) THEN
1164
1165	z0 = roughness_length
1166	z0h = z0h_factor * z0
1167	z0q = z0h_factor * z0
1168
1169	IF ( .NOT. constant_heatflux ) THEN
1170	!
1171	!-- Surface temperature is prescribed. Here the heat flux cannot be
1172	!-- simply estimated, because therefore ol, u* and theta* would have
1173	!-- to be computed by iteration. This is why the heat flux is assumed
1174	!-- to be zero before the first time step. It approaches its correct
1175	!-- value in the course of the first few time steps.
1176	shf = 0.0_wp
1177	ENDIF
1178
1179	IF ( humidity .OR. passive_scalar ) THEN
1180	IF ( .NOT. constant_waterflux ) qsws = 0.0_wp
1181	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1182	qrsws = 0.0_wp
1183	nrsws = 0.0_wp
1184	ENDIF
1185	ENDIF
1186
1187	ENDIF
1188
1189	!
1190	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1191	!-- the reference state will be set (overwritten) in init_ocean)
1192	IF ( use_single_reference_value ) THEN
1193	IF ( .NOT. humidity ) THEN
1194	ref_state(:) = pt_reference
1195	ELSE
1196	ref_state(:) = vpt_reference
1197	ENDIF
1198	ELSE
1199	IF ( .NOT. humidity ) THEN
1200	ref_state(:) = pt_init(:)
1201	ELSE
1202	ref_state(:) = vpt(:,nys,nxl)
1203	ENDIF
1204	ENDIF
1205
1206	!
1207	!-- For the moment, vertical velocity is zero
1208	w = 0.0_wp
1209
1210	!
1211	!-- Initialize array sums (must be defined in first call of pres)
1212	sums = 0.0_wp
1213
1214	!
1215	!-- In case of iterative solvers, p must get an initial value
1216	IF ( psolver(1:9) == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
1217
1218	!
1219	!-- Treating cloud physics, liquid water content and precipitation amount
1220	!-- are zero at beginning of the simulation
1221	IF ( cloud_physics ) THEN
1222	ql = 0.0_wp
1223	qc = 0.0_wp
1224
1225	precipitation_amount = 0.0_wp
1226	ENDIF
1227	!
1228	!-- Impose vortex with vertical axis on the initial velocity profile
1229	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1230	CALL init_rankine
1231	ENDIF
1232
1233	!
1234	!-- Impose temperature anomaly (advection test only)
1235	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1236	CALL init_pt_anomaly
1237	ENDIF
1238
1239	!
1240	!-- If required, change the surface temperature at the start of the 3D run
1241	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
1242	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1243	ENDIF
1244
1245	!
1246	!-- If required, change the surface humidity/scalar at the start of the 3D
1247	!-- run
1248	IF ( ( humidity .OR. passive_scalar ) .AND. &
1249	q_surface_initial_change /= 0.0_wp ) THEN
1250	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1251	ENDIF
1252
1253	!
1254	!-- Initialize old and new time levels.
1255	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
1256	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1257
1258	IF ( humidity .OR. passive_scalar ) THEN
1259	tq_m = 0.0_wp
1260	q_p = q
1261	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1262	tqr_m = 0.0_wp
1263	qr_p = qr
1264	tnr_m = 0.0_wp
1265	nr_p = nr
1266	ENDIF
1267	ENDIF
1268
1269	IF ( ocean ) THEN
1270	tsa_m = 0.0_wp
1271	sa_p = sa
1272	ENDIF
1273
1274	CALL location_message( 'finished', .TRUE. )
1275
1276	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1277	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1278	THEN
1279
1280	CALL location_message( 'initializing in case of restart / cyclic_fill', &
1281	.FALSE. )
1282	!
1283	!-- When reading data for cyclic fill of 3D prerun data files, read
1284	!-- some of the global variables from the restart file which are required
1285	!-- for initializing the inflow
1286	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1287
1288	DO i = 0, io_blocks-1
1289	IF ( i == io_group ) THEN
1290	CALL read_parts_of_var_list
1291	CALL close_file( 13 )
1292	ENDIF
1293	#if defined( __parallel )
1294	CALL MPI_BARRIER( comm2d, ierr )
1295	#endif
1296	ENDDO
1297
1298	ENDIF
1299
1300	!
1301	!-- Read binary data from restart file
1302	DO i = 0, io_blocks-1
1303	IF ( i == io_group ) THEN
1304	CALL read_3d_binary
1305	ENDIF
1306	#if defined( __parallel )
1307	CALL MPI_BARRIER( comm2d, ierr )
1308	#endif
1309	ENDDO
1310
1311	!
1312	!-- Initialization of the turbulence recycling method
1313	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1314	turbulent_inflow ) THEN
1315	!
1316	!-- First store the profiles to be used at the inflow.
1317	!-- These profiles are the (temporally) and horizontally averaged vertical
1318	!-- profiles from the prerun. Alternatively, prescribed profiles
1319	!-- for u,v-components can be used.
1320	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,6) )
1321
1322	IF ( use_prescribed_profile_data ) THEN
1323	mean_inflow_profiles(:,1) = u_init ! u
1324	mean_inflow_profiles(:,2) = v_init ! v
1325	ELSE
1326	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1327	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1328	ENDIF
1329	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1330	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1331	mean_inflow_profiles(:,6) = hom_sum(:,41,0) ! q
1332
1333	!
1334	!-- If necessary, adjust the horizontal flow field to the prescribed
1335	!-- profiles
1336	IF ( use_prescribed_profile_data ) THEN
1337	DO i = nxlg, nxrg
1338	DO j = nysg, nyng
1339	DO k = nzb, nzt+1
1340	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1341	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1342	ENDDO
1343	ENDDO
1344	ENDDO
1345	ENDIF
1346
1347	!
1348	!-- Use these mean profiles at the inflow (provided that Dirichlet
1349	!-- conditions are used)
1350	IF ( inflow_l ) THEN
1351	DO j = nysg, nyng
1352	DO k = nzb, nzt+1
1353	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1354	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1355	w(k,j,nxlg:-1) = 0.0_wp
1356	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1357	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1358	IF ( humidity .OR. passive_scalar ) &
1359	q(k,j,nxlg:-1) = mean_inflow_profiles(k,6)
1360	ENDDO
1361	ENDDO
1362	ENDIF
1363
1364	!
1365	!-- Calculate the damping factors to be used at the inflow. For a
1366	!-- turbulent inflow the turbulent fluctuations have to be limited
1367	!-- vertically because otherwise the turbulent inflow layer will grow
1368	!-- in time.
1369	IF ( inflow_damping_height == 9999999.9_wp ) THEN
1370	!
1371	!-- Default: use the inversion height calculated by the prerun; if
1372	!-- this is zero, inflow_damping_height must be explicitly
1373	!-- specified.
1374	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
1375	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1376	ELSE
1377	WRITE( message_string, * ) 'inflow_damping_height must be ', &
1378	'explicitly specified because&the inversion height ', &
1379	'calculated by the prerun is zero.'
1380	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1381	ENDIF
1382
1383	ENDIF
1384
1385	IF ( inflow_damping_width == 9999999.9_wp ) THEN
1386	!
1387	!-- Default for the transition range: one tenth of the undamped
1388	!-- layer
1389	inflow_damping_width = 0.1_wp * inflow_damping_height
1390
1391	ENDIF
1392
1393	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1394
1395	DO k = nzb, nzt+1
1396
1397	IF ( zu(k) <= inflow_damping_height ) THEN
1398	inflow_damping_factor(k) = 1.0_wp
1399	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1400	inflow_damping_factor(k) = 1.0_wp - &
1401	( zu(k) - inflow_damping_height ) / &
1402	inflow_damping_width
1403	ELSE
1404	inflow_damping_factor(k) = 0.0_wp
1405	ENDIF
1406
1407	ENDDO
1408
1409	ENDIF
1410
1411	!
1412	!-- Inside buildings set velocities and TKE back to zero
1413	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1414	topography /= 'flat' ) THEN
1415	!
1416	!-- Inside buildings set velocities and TKE back to zero.
1417	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1418	!-- maybe revise later.
1419	DO i = nxlg, nxrg
1420	DO j = nysg, nyng
1421	u (nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1422	v (nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1423	w (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1424	e (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1425	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1426	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1427	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1428	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1429	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1430	ENDDO
1431	ENDDO
1432
1433	ENDIF
1434
1435	!
1436	!-- Calculate initial temperature field and other constants used in case
1437	!-- of a sloping surface
1438	IF ( sloping_surface ) CALL init_slope
1439
1440	!
1441	!-- Initialize new time levels (only done in order to set boundary values
1442	!-- including ghost points)
1443	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1444	IF ( humidity .OR. passive_scalar ) THEN
1445	q_p = q
1446	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1447	qr_p = qr
1448	nr_p = nr
1449	ENDIF
1450	ENDIF
1451	IF ( ocean ) sa_p = sa
1452
1453	!
1454	!-- Allthough tendency arrays are set in prognostic_equations, they have
1455	!-- have to be predefined here because they are used (but multiplied with 0)
1456	!-- there before they are set.
1457	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
1458	IF ( humidity .OR. passive_scalar ) THEN
1459	tq_m = 0.0_wp
1460	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1461	tqr_m = 0.0_wp
1462	tnr_m = 0.0_wp
1463	ENDIF
1464	ENDIF
1465	IF ( ocean ) tsa_m = 0.0_wp
1466
1467	CALL location_message( 'finished', .TRUE. )
1468
1469	ELSE
1470	!
1471	!-- Actually this part of the programm should not be reached
1472	message_string = 'unknown initializing problem'
1473	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1474	ENDIF
1475
1476
1477	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1478	!
1479	!-- Initialize old timelevels needed for radiation boundary conditions
1480	IF ( outflow_l ) THEN
1481	u_m_l(:,:,:) = u(:,:,1:2)
1482	v_m_l(:,:,:) = v(:,:,0:1)
1483	w_m_l(:,:,:) = w(:,:,0:1)
1484	ENDIF
1485	IF ( outflow_r ) THEN
1486	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1487	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1488	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1489	ENDIF
1490	IF ( outflow_s ) THEN
1491	u_m_s(:,:,:) = u(:,0:1,:)
1492	v_m_s(:,:,:) = v(:,1:2,:)
1493	w_m_s(:,:,:) = w(:,0:1,:)
1494	ENDIF
1495	IF ( outflow_n ) THEN
1496	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1497	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1498	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1499	ENDIF
1500
1501	ENDIF
1502
1503	!
1504	!-- Calculate the initial volume flow at the right and north boundary
1505	IF ( conserve_volume_flow ) THEN
1506
1507	IF ( use_prescribed_profile_data ) THEN
1508
1509	volume_flow_initial_l = 0.0_wp
1510	volume_flow_area_l = 0.0_wp
1511
1512	IF ( nxr == nx ) THEN
1513	DO j = nys, nyn
1514	DO k = nzb_u_inner(j,nx)+1, nzt
1515	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1516	u_init(k) * dzw(k)
1517	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1518	ENDDO
1519	ENDDO
1520	ENDIF
1521
1522	IF ( nyn == ny ) THEN
1523	DO i = nxl, nxr
1524	DO k = nzb_v_inner(ny,i)+1, nzt
1525	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1526	v_init(k) * dzw(k)
1527	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1528	ENDDO
1529	ENDDO
1530	ENDIF
1531
1532	#if defined( __parallel )
1533	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1534	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1535	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1536	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1537
1538	#else
1539	volume_flow_initial = volume_flow_initial_l
1540	volume_flow_area = volume_flow_area_l
1541	#endif
1542
1543	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1544
1545	volume_flow_initial_l = 0.0_wp
1546	volume_flow_area_l = 0.0_wp
1547
1548	IF ( nxr == nx ) THEN
1549	DO j = nys, nyn
1550	DO k = nzb_u_inner(j,nx)+1, nzt
1551	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1552	hom_sum(k,1,0) * dzw(k)
1553	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1554	ENDDO
1555	ENDDO
1556	ENDIF
1557
1558	IF ( nyn == ny ) THEN
1559	DO i = nxl, nxr
1560	DO k = nzb_v_inner(ny,i)+1, nzt
1561	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1562	hom_sum(k,2,0) * dzw(k)
1563	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1564	ENDDO
1565	ENDDO
1566	ENDIF
1567
1568	#if defined( __parallel )
1569	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1570	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1571	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1572	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1573
1574	#else
1575	volume_flow_initial = volume_flow_initial_l
1576	volume_flow_area = volume_flow_area_l
1577	#endif
1578
1579	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1580
1581	volume_flow_initial_l = 0.0_wp
1582	volume_flow_area_l = 0.0_wp
1583
1584	IF ( nxr == nx ) THEN
1585	DO j = nys, nyn
1586	DO k = nzb_u_inner(j,nx)+1, nzt
1587	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1588	u(k,j,nx) * dzw(k)
1589	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1590	ENDDO
1591	ENDDO
1592	ENDIF
1593
1594	IF ( nyn == ny ) THEN
1595	DO i = nxl, nxr
1596	DO k = nzb_v_inner(ny,i)+1, nzt
1597	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1598	v(k,ny,i) * dzw(k)
1599	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1600	ENDDO
1601	ENDDO
1602	ENDIF
1603
1604	#if defined( __parallel )
1605	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1606	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1607	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1608	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1609
1610	#else
1611	volume_flow_initial = volume_flow_initial_l
1612	volume_flow_area = volume_flow_area_l
1613	#endif
1614
1615	ENDIF
1616
1617	!
1618	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1619	!-- from u\|v_bulk instead
1620	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1621	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1622	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1623	ENDIF
1624
1625	ENDIF
1626
1627	!
1628	!-- Initialize quantities for special advections schemes
1629	CALL init_advec
1630
1631	!
1632	!-- Impose random perturbation on the horizontal velocity field and then
1633	!-- remove the divergences from the velocity field at the initial stage
1634	IF ( create_disturbances .AND. disturbance_energy_limit /= 0.0_wp .AND. &
1635	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1636	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1637
1638	CALL location_message( 'creating initial disturbances', .FALSE. )
1639	CALL disturb_field( nzb_u_inner, tend, u )
1640	CALL disturb_field( nzb_v_inner, tend, v )
1641	CALL location_message( 'finished', .TRUE. )
1642
1643	CALL location_message( 'calling pressure solver', .FALSE. )
1644	n_sor = nsor_ini
1645	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1646	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1647	!$acc copyin( weight_pres, weight_substep ) &
1648	!$acc copy( tri, tric, u, v, w )
1649	CALL pres
1650	!$acc end data
1651	n_sor = nsor
1652	CALL location_message( 'finished', .TRUE. )
1653
1654	ENDIF
1655
1656	!
1657	!-- If required, initialize quantities needed for the plant canopy model
1658	CALL location_message( 'initializing plant canopy model', .FALSE. )
1659	IF ( plant_canopy ) CALL pcm_init
1660	CALL location_message( 'finished', .TRUE. )
1661
1662	!
1663	!-- If required, initialize dvrp-software
1664	IF ( dt_dvrp /= 9999999.9_wp ) CALL init_dvrp
1665
1666	IF ( ocean ) THEN
1667	!
1668	!-- Initialize quantities needed for the ocean model
1669	CALL init_ocean
1670
1671	ELSE
1672	!
1673	!-- Initialize quantities for handling cloud physics
1674	!-- This routine must be called before lpm_init, because
1675	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1676	!-- lpm_init) is not defined.
1677	CALL init_cloud_physics
1678	!
1679	!-- Initialize bulk cloud microphysics
1680	CALL microphysics_init
1681	ENDIF
1682
1683	!
1684	!-- If required, initialize particles
1685	IF ( particle_advection ) CALL lpm_init
1686
1687	!
1688	!-- If required, initialize quantities needed for the LSM
1689	IF ( land_surface ) THEN
1690	CALL location_message( 'initializing land surface model', .FALSE. )
1691	CALL lsm_init
1692	CALL location_message( 'finished', .TRUE. )
1693	ENDIF
1694
1695	!
1696	!-- Initialize surface layer (done after LSM as roughness length are required
1697	!-- for initialization
1698	IF ( constant_flux_layer ) THEN
1699	CALL location_message( 'initializing surface layer', .FALSE. )
1700	CALL init_surface_layer_fluxes
1701	CALL location_message( 'finished', .TRUE. )
1702	ENDIF
1703
1704	!
1705	!-- If required, initialize radiation model
1706	IF ( radiation ) THEN
1707	CALL location_message( 'initializing radiation model', .FALSE. )
1708	CALL radiation_init
1709	CALL location_message( 'finished', .TRUE. )
1710	ENDIF
1711
1712	!
1713	!-- If required, initialize quantities needed for the wind turbine model
1714	IF ( wind_turbine ) THEN
1715	CALL location_message( 'initializing wind turbine model', .FALSE. )
1716	CALL wtm_init
1717	CALL location_message( 'finished', .TRUE. )
1718	ENDIF
1719
1720
1721	!
1722	!-- Initialize the ws-scheme.
1723	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1724
1725	!
1726	!-- Setting weighting factors for calculation of perturbation pressure
1727	!-- and turbulent quantities from the RK substeps
1728	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1729
1730	weight_substep(1) = 1._wp/6._wp
1731	weight_substep(2) = 3._wp/10._wp
1732	weight_substep(3) = 8._wp/15._wp
1733
1734	weight_pres(1) = 1._wp/3._wp
1735	weight_pres(2) = 5._wp/12._wp
1736	weight_pres(3) = 1._wp/4._wp
1737
1738	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1739
1740	weight_substep(1) = 1._wp/2._wp
1741	weight_substep(2) = 1._wp/2._wp
1742
1743	weight_pres(1) = 1._wp/2._wp
1744	weight_pres(2) = 1._wp/2._wp
1745
1746	ELSE ! for Euler-method
1747
1748	weight_substep(1) = 1.0_wp
1749	weight_pres(1) = 1.0_wp
1750
1751	ENDIF
1752
1753	!
1754	!-- Initialize Rayleigh damping factors
1755	rdf = 0.0_wp
1756	rdf_sc = 0.0_wp
1757	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
1758	IF ( .NOT. ocean ) THEN
1759	DO k = nzb+1, nzt
1760	IF ( zu(k) >= rayleigh_damping_height ) THEN
1761	rdf(k) = rayleigh_damping_factor * &
1762	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
1763	/ ( zu(nzt) - rayleigh_damping_height ) ) &
1764	)**2
1765	ENDIF
1766	ENDDO
1767	ELSE
1768	DO k = nzt, nzb+1, -1
1769	IF ( zu(k) <= rayleigh_damping_height ) THEN
1770	rdf(k) = rayleigh_damping_factor * &
1771	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
1772	/ ( rayleigh_damping_height - zu(nzb+1) ) ) &
1773	)**2
1774	ENDIF
1775	ENDDO
1776	ENDIF
1777	ENDIF
1778	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1779
1780	!
1781	!-- Initialize the starting level and the vertical smoothing factor used for
1782	!-- the external pressure gradient
1783	dp_smooth_factor = 1.0_wp
1784	IF ( dp_external ) THEN
1785	!
1786	!-- Set the starting level dp_level_ind_b only if it has not been set before
1787	!-- (e.g. in init_grid).
1788	IF ( dp_level_ind_b == 0 ) THEN
1789	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1790	dp_level_ind_b = ind_array(1) - 1 + nzb
1791	! MINLOC uses lower array bound 1
1792	ENDIF
1793	IF ( dp_smooth ) THEN
1794	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
1795	DO k = dp_level_ind_b+1, nzt
1796	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
1797	( REAL( k - dp_level_ind_b, KIND=wp ) / &
1798	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
1799	ENDDO
1800	ENDIF
1801	ENDIF
1802
1803	!
1804	!-- Initialize damping zone for the potential temperature in case of
1805	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1806	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1807	ptdf_x = 0.0_wp
1808	ptdf_y = 0.0_wp
1809	IF ( bc_lr_dirrad ) THEN
1810	DO i = nxl, nxr
1811	IF ( ( i * dx ) < pt_damping_width ) THEN
1812	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
1813	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
1814	REAL( pt_damping_width, KIND=wp ) ) ) )**2
1815	ENDIF
1816	ENDDO
1817	ELSEIF ( bc_lr_raddir ) THEN
1818	DO i = nxl, nxr
1819	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1820	ptdf_x(i) = pt_damping_factor * &
1821	SIN( pi * 0.5_wp * &
1822	( ( i - nx ) * dx + pt_damping_width ) / &
1823	REAL( pt_damping_width, KIND=wp ) )**2
1824	ENDIF
1825	ENDDO
1826	ELSEIF ( bc_ns_dirrad ) THEN
1827	DO j = nys, nyn
1828	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1829	ptdf_y(j) = pt_damping_factor * &
1830	SIN( pi * 0.5_wp * &
1831	( ( j - ny ) * dy + pt_damping_width ) / &
1832	REAL( pt_damping_width, KIND=wp ) )**2
1833	ENDIF
1834	ENDDO
1835	ELSEIF ( bc_ns_raddir ) THEN
1836	DO j = nys, nyn
1837	IF ( ( j * dy ) < pt_damping_width ) THEN
1838	ptdf_y(j) = pt_damping_factor * &
1839	SIN( pi * 0.5_wp * &
1840	( pt_damping_width - j * dy ) / &
1841	REAL( pt_damping_width, KIND=wp ) )**2
1842	ENDIF
1843	ENDDO
1844	ENDIF
1845
1846	!
1847	!-- Pre-set masks for regional statistics. Default is the total model domain.
1848	!-- Ghost points are excluded because counting values at the ghost boundaries
1849	!-- would bias the statistics
1850	rmask = 1.0_wp
1851	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
1852	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
1853
1854	!
1855	!-- User-defined initializing actions. Check afterwards, if maximum number
1856	!-- of allowed timeseries is exceeded
1857	CALL user_init
1858
1859	IF ( dots_num > dots_max ) THEN
1860	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1861	' its maximum of dots_max = ', dots_max, &
1862	' &Please increase dots_max in modules.f90.'
1863	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1864	ENDIF
1865
1866	!
1867	!-- Input binary data file is not needed anymore. This line must be placed
1868	!-- after call of user_init!
1869	CALL close_file( 13 )
1870
1871	!
1872	!-- Compute total sum of active mask grid points
1873	!-- and the mean surface level height for each statistic region
1874	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1875	!-- total domain
1876	!-- ngp_3d: number of grid points of the total domain
1877	ngp_2dh_outer_l = 0
1878	ngp_2dh_outer = 0
1879	ngp_2dh_s_inner_l = 0
1880	ngp_2dh_s_inner = 0
1881	ngp_2dh_l = 0
1882	ngp_2dh = 0
1883	ngp_3d_inner_l = 0.0_wp
1884	ngp_3d_inner = 0
1885	ngp_3d = 0
1886	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1887
1888	mean_surface_level_height = 0.0_wp
1889	mean_surface_level_height_l = 0.0_wp
1890
1891	DO sr = 0, statistic_regions
1892	DO i = nxl, nxr
1893	DO j = nys, nyn
1894	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
1895	!
1896	!-- All xy-grid points
1897	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1898	mean_surface_level_height_l(sr) = mean_surface_level_height_l(sr) &
1899	+ zw(nzb_s_inner(j,i))
1900	!
1901	!-- xy-grid points above topography
1902	DO k = nzb_s_outer(j,i), nz + 1
1903	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1904	ENDDO
1905	DO k = nzb_s_inner(j,i), nz + 1
1906	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1907	ENDDO
1908	!
1909	!-- All grid points of the total domain above topography
1910	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) &
1911	+ ( nz - nzb_s_inner(j,i) + 2 )
1912	ENDIF
1913	ENDDO
1914	ENDDO
1915	ENDDO
1916
1917	sr = statistic_regions + 1
1918	#if defined( __parallel )
1919	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1920	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1921	comm2d, ierr )
1922	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1923	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1924	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1925	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1926	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1927	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1928	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1929	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1930	MPI_SUM, comm2d, ierr )
1931	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1932	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1933	CALL MPI_ALLREDUCE( mean_surface_level_height_l(0), &
1934	mean_surface_level_height(0), sr, MPI_REAL, &
1935	MPI_SUM, comm2d, ierr )
1936	mean_surface_level_height = mean_surface_level_height / REAL( ngp_2dh )
1937	#else
1938	ngp_2dh = ngp_2dh_l
1939	ngp_2dh_outer = ngp_2dh_outer_l
1940	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1941	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1942	mean_surface_level_height = mean_surface_level_height_l / REAL( ngp_2dh_l )
1943	#endif
1944
1945	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1946	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1947
1948	!
1949	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1950	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1951	!-- the respective subdomain lie below the surface topography
1952	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1953	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1954	ngp_3d_inner(:) )
1955	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1956
1957	DEALLOCATE( mean_surface_level_height_l, ngp_2dh_l, ngp_2dh_outer_l, &
1958	ngp_3d_inner_l, ngp_3d_inner_tmp )
1959
1960	CALL location_message( 'leaving init_3d_model', .TRUE. )
1961
1962	END SUBROUTINE init_3d_model

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