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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1946

Last change on this file since 1946 was 1921, checked in by suehring, 8 years ago

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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 1921 2016-05-30 10:52:07Z suehring $
26	!
27	! 1920 2016-05-30 10:50:15Z suehring
28	! Initialize us with very small number to avoid segmentation fault during
29	! calculation of Obukhov length
30	!
31	! 1918 2016-05-27 14:35:57Z raasch
32	! intermediate_timestep_count is set 0 instead 1 for first call of pres,
33	! bugfix: initialization of local sum arrays are moved to the beginning of the
34	! routine because otherwise results from pres are overwritten
35	!
36	! 1914 2016-05-26 14:44:07Z witha
37	! Added initialization of the wind turbine model
38	!
39	! 1878 2016-04-19 12:30:36Z hellstea
40	! The zeroth element of weight_pres removed as unnecessary
41	!
42	! 1849 2016-04-08 11:33:18Z hoffmann
43	! Adapted for modularization of microphysics.
44	! precipitation_amount, precipitation_rate, prr moved to arrays_3d.
45	! Initialization of nc_1d, nr_1d, pt_1d, qc_1d, qr_1d, q_1d moved to
46	! microphysics_init.
47	!
48	! 1845 2016-04-08 08:29:13Z raasch
49	! nzb_2d replaced by nzb_u\|v_inner
50	!
51	! 1833 2016-04-07 14:23:03Z raasch
52	! initialization of spectra quantities moved to spectra_mod
53	!
54	! 1831 2016-04-07 13:15:51Z hoffmann
55	! turbulence renamed collision_turbulence
56	!
57	! 1826 2016-04-07 12:01:39Z maronga
58	! Renamed radiation calls.
59	! Renamed canopy model calls.
60	!
61	! 1822 2016-04-07 07:49:42Z hoffmann
62	! icloud_scheme replaced by microphysics_*
63	!
64	! 1817 2016-04-06 15:44:20Z maronga
65	! Renamed lsm calls.
66	!
67	! 1815 2016-04-06 13:49:59Z raasch
68	! zero-settings for velocities inside topography re-activated (was deactivated
69	! in r1762)
70	!
71	! 1788 2016-03-10 11:01:04Z maronga
72	! Added z0q.
73	! Syntax layout improved.
74	!
75	! 1783 2016-03-06 18:36:17Z raasch
76	! netcdf module name changed + related changes
77	!
78	! 1764 2016-02-28 12:45:19Z raasch
79	! bugfix: increase size of volume_flow_area_l and volume_flow_initial_l by 1
80	!
81	! 1762 2016-02-25 12:31:13Z hellstea
82	! Introduction of nested domain feature
83	!
84	! 1738 2015-12-18 13:56:05Z raasch
85	! calculate mean surface level height for each statistic region
86	!
87	! 1734 2015-12-02 12:17:12Z raasch
88	! no initial disturbances in case that the disturbance energy limit has been
89	! set zero
90	!
91	! 1707 2015-11-02 15:24:52Z maronga
92	! Bugfix: transfer of Richardson number from 1D model to Obukhov length caused
93	! devision by zero in neutral stratification
94	!
95	! 1691 2015-10-26 16:17:44Z maronga
96	! Call to init_surface_layer added. rif is replaced by ol and zeta.
97	!
98	! 1682 2015-10-07 23:56:08Z knoop
99	! Code annotations made doxygen readable
100	!
101	! 1615 2015-07-08 18:49:19Z suehring
102	! Enable turbulent inflow for passive_scalar and humidity
103	!
104	! 1585 2015-04-30 07:05:52Z maronga
105	! Initialization of radiation code is now done after LSM initializtion
106	!
107	! 1575 2015-03-27 09:56:27Z raasch
108	! adjustments for psolver-queries
109	!
110	! 1551 2015-03-03 14:18:16Z maronga
111	! Allocation of land surface arrays is now done in the subroutine lsm_init_arrays,
112	! which is part of land_surface_model.
113	!
114	! 1507 2014-12-10 12:14:18Z suehring
115	! Bugfix: set horizontal velocity components to zero inside topography
116	!
117	! 1496 2014-12-02 17:25:50Z maronga
118	! Added initialization of the land surface and radiation schemes
119	!
120	! 1484 2014-10-21 10:53:05Z kanani
121	! Changes due to new module structure of the plant canopy model:
122	! canopy-related initialization (e.g. lad and canopy_heat_flux) moved to new
123	! subroutine init_plant_canopy within the module plant_canopy_model_mod,
124	! call of subroutine init_plant_canopy added.
125	!
126	! 1431 2014-07-15 14:47:17Z suehring
127	! var_d added, in order to normalize spectra.
128	!
129	! 1429 2014-07-15 12:53:45Z knoop
130	! Ensemble run capability added to parallel random number generator
131	!
132	! 1411 2014-05-16 18:01:51Z suehring
133	! Initial horizontal velocity profiles were not set to zero at the first vertical
134	! grid level in case of non-cyclic lateral boundary conditions.
135	!
136	! 1406 2014-05-16 13:47:01Z raasch
137	! bugfix: setting of initial velocities at k=1 to zero not in case of a
138	! no-slip boundary condition for uv
139	!
140	! 1402 2014-05-09 14:25:13Z raasch
141	! location messages modified
142	!
143	! 1400 2014-05-09 14:03:54Z knoop
144	! Parallel random number generator added
145	!
146	! 1384 2014-05-02 14:31:06Z raasch
147	! location messages added
148	!
149	! 1361 2014-04-16 15:17:48Z hoffmann
150	! tend_* removed
151	! Bugfix: w_subs is not allocated anymore if it is already allocated
152	!
153	! 1359 2014-04-11 17:15:14Z hoffmann
154	! module lpm_init_mod added to use statements, because lpm_init has become a
155	! module
156	!
157	! 1353 2014-04-08 15:21:23Z heinze
158	! REAL constants provided with KIND-attribute
159	!
160	! 1340 2014-03-25 19:45:13Z kanani
161	! REAL constants defined as wp-kind
162	!
163	! 1322 2014-03-20 16:38:49Z raasch
164	! REAL constants defined as wp-kind
165	! module interfaces removed
166	!
167	! 1320 2014-03-20 08:40:49Z raasch
168	! ONLY-attribute added to USE-statements,
169	! kind-parameters added to all INTEGER and REAL declaration statements,
170	! kinds are defined in new module kinds,
171	! revision history before 2012 removed,
172	! comment fields (!:) to be used for variable explanations added to
173	! all variable declaration statements
174	!
175	! 1316 2014-03-17 07:44:59Z heinze
176	! Bugfix: allocation of w_subs
177	!
178	! 1299 2014-03-06 13:15:21Z heinze
179	! Allocate w_subs due to extension of large scale subsidence in combination
180	! with large scale forcing data (LSF_DATA)
181	!
182	! 1241 2013-10-30 11:36:58Z heinze
183	! Overwrite initial profiles in case of nudging
184	! Inititialize shf and qsws in case of large_scale_forcing
185	!
186	! 1221 2013-09-10 08:59:13Z raasch
187	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
188	! copy
189	!
190	! 1212 2013-08-15 08:46:27Z raasch
191	! array tri is allocated and included in data copy statement
192	!
193	! 1195 2013-07-01 12:27:57Z heinze
194	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
195	!
196	! 1179 2013-06-14 05:57:58Z raasch
197	! allocate and set ref_state to be used in buoyancy terms
198	!
199	! 1171 2013-05-30 11:27:45Z raasch
200	! diss array is allocated with full size if accelerator boards are used
201	!
202	! 1159 2013-05-21 11:58:22Z fricke
203	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
204	!
205	! 1153 2013-05-10 14:33:08Z raasch
206	! diss array is allocated with dummy elements even if it is not needed
207	! (required by PGI 13.4 / CUDA 5.0)
208	!
209	! 1115 2013-03-26 18:16:16Z hoffmann
210	! unused variables removed
211	!
212	! 1113 2013-03-10 02:48:14Z raasch
213	! openACC directive modified
214	!
215	! 1111 2013-03-08 23:54:10Z raasch
216	! openACC directives added for pres
217	! array diss allocated only if required
218	!
219	! 1092 2013-02-02 11:24:22Z raasch
220	! unused variables removed
221	!
222	! 1065 2012-11-22 17:42:36Z hoffmann
223	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
224	!
225	! 1053 2012-11-13 17:11:03Z hoffmann
226	! allocation and initialisation of necessary data arrays for the two-moment
227	! cloud physics scheme the two new prognostic equations (nr, qr):
228	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
229	! +tend_*, prr
230	!
231	! 1036 2012-10-22 13:43:42Z raasch
232	! code put under GPL (PALM 3.9)
233	!
234	! 1032 2012-10-21 13:03:21Z letzel
235	! save memory by not allocating pt_2 in case of neutral = .T.
236	!
237	! 1025 2012-10-07 16:04:41Z letzel
238	! bugfix: swap indices of mask for ghost boundaries
239	!
240	! 1015 2012-09-27 09:23:24Z raasch
241	! mask is set to zero for ghost boundaries
242	!
243	! 1010 2012-09-20 07:59:54Z raasch
244	! cpp switch __nopointer added for pointer free version
245	!
246	! 1003 2012-09-14 14:35:53Z raasch
247	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
248	!
249	! 1001 2012-09-13 14:08:46Z raasch
250	! all actions concerning leapfrog scheme removed
251	!
252	! 996 2012-09-07 10:41:47Z raasch
253	! little reformatting
254	!
255	! 978 2012-08-09 08:28:32Z fricke
256	! outflow damping layer removed
257	! roughness length for scalar quantites z0h added
258	! damping zone for the potential temperatur in case of non-cyclic lateral
259	! boundaries added
260	! initialization of ptdf_x, ptdf_y
261	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
262	!
263	! 849 2012-03-15 10:35:09Z raasch
264	! init_particles renamed lpm_init
265	!
266	! 825 2012-02-19 03:03:44Z raasch
267	! wang_collision_kernel renamed wang_kernel
268	!
269	! Revision 1.1 1998/03/09 16:22:22 raasch
270	! Initial revision
271	!
272	!
273	! Description:
274	! ------------
275	!> Allocation of arrays and initialization of the 3D model via
276	!> a) pre-run the 1D model
277	!> or
278	!> b) pre-set constant linear profiles
279	!> or
280	!> c) read values of a previous run
281	!------------------------------------------------------------------------------!
282	SUBROUTINE init_3d_model
283
284
285	USE advec_ws
286
287	USE arrays_3d
288
289	USE constants, &
290	ONLY: pi
291
292	USE control_parameters
293
294	USE grid_variables, &
295	ONLY: dx, dy
296
297	USE indices
298
299	USE lpm_init_mod, &
300	ONLY: lpm_init
301
302	USE kinds
303
304	USE land_surface_model_mod, &
305	ONLY: lsm_init, lsm_init_arrays, land_surface
306
307	USE ls_forcing_mod
308
309	USE microphysics_mod, &
310	ONLY: collision_turbulence, microphysics_init
311
312	USE model_1d, &
313	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
314
315	USE netcdf_interface, &
316	ONLY: dots_max, dots_num
317
318	USE particle_attributes, &
319	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
320
321	USE pegrid
322
323	USE plant_canopy_model_mod, &
324	ONLY: pcm_init, plant_canopy
325
326	USE radiation_model_mod, &
327	ONLY: radiation_init, radiation
328
329	USE random_function_mod
330
331	USE random_generator_parallel, &
332	ONLY: random_number_parallel, random_seed_parallel, random_dummy, &
333	id_random_array, seq_random_array
334
335	USE statistics, &
336	ONLY: hom, hom_sum, mean_surface_level_height, pr_palm, rmask, &
337	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
338	sums_l_l, sums_up_fraction_l, sums_wsts_bc_l, ts_value, &
339	weight_pres, weight_substep
340
341	USE surface_layer_fluxes_mod, &
342	ONLY: init_surface_layer_fluxes
343
344	USE transpose_indices
345
346	USE wind_turbine_model_mod, &
347	ONLY: wtm_init, wtm_init_arrays, wind_turbine
348
349	IMPLICIT NONE
350
351	INTEGER(iwp) :: i !<
352	INTEGER(iwp) :: ind_array(1) !<
353	INTEGER(iwp) :: j !<
354	INTEGER(iwp) :: k !<
355	INTEGER(iwp) :: sr !<
356
357	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !<
358
359	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !<
360	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !<
361
362	REAL(wp), DIMENSION(1:3) :: volume_flow_area_l !<
363	REAL(wp), DIMENSION(1:3) :: volume_flow_initial_l !<
364
365	REAL(wp), DIMENSION(:), ALLOCATABLE :: mean_surface_level_height_l !<
366	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !<
367	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !<
368
369
370	CALL location_message( 'allocating arrays', .FALSE. )
371	!
372	!-- Allocate arrays
373	ALLOCATE( mean_surface_level_height(0:statistic_regions), &
374	mean_surface_level_height_l(0:statistic_regions), &
375	ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
376	ngp_3d(0:statistic_regions), &
377	ngp_3d_inner(0:statistic_regions), &
378	ngp_3d_inner_l(0:statistic_regions), &
379	ngp_3d_inner_tmp(0:statistic_regions), &
380	sums_divnew_l(0:statistic_regions), &
381	sums_divold_l(0:statistic_regions) )
382	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
383	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
384	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
385	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
386	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
387	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
388	sums(nzb:nzt+1,pr_palm+max_pr_user), &
389	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
390	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
391	sums_up_fraction_l(10,3,0:statistic_regions), &
392	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
393	ts_value(dots_max,0:statistic_regions) )
394	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
395
396	ALLOCATE( ol(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
397	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
398	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
399	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
400	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
401	z0h(nysg:nyng,nxlg:nxrg), z0q(nysg:nyng,nxlg:nxrg) )
402
403	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
404	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
405	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
406	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
407	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
408
409	#if defined( __nopointer )
410	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
411	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
412	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
413	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
414	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
415	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
416	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
417	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
418	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
419	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
420	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
421	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
422	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
423	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
424	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
425	#else
426	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
427	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
428	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
429	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
430	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
431	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
432	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
433	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
434	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
435	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
436	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
437	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
438	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
439	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
440	IF ( .NOT. neutral ) THEN
441	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
442	ENDIF
443	#endif
444
445	!
446	!-- Following array is required for perturbation pressure within the iterative
447	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
448	!-- the weighted average of the substeps and cannot be used in the Poisson
449	!-- solver.
450	IF ( psolver == 'sor' ) THEN
451	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
452	ELSEIF ( psolver(1:9) == 'multigrid' ) THEN
453	!
454	!-- For performance reasons, multigrid is using one ghost layer only
455	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
456	ENDIF
457
458	!
459	!-- Array for storing constant coeffficients of the tridiagonal solver
460	IF ( psolver == 'poisfft' ) THEN
461	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
462	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
463	ENDIF
464
465	IF ( humidity .OR. passive_scalar ) THEN
466	!
467	!-- 2D-humidity/scalar arrays
468	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
469	qsws(nysg:nyng,nxlg:nxrg), &
470	qswst(nysg:nyng,nxlg:nxrg) )
471
472	!
473	!-- 3D-humidity/scalar arrays
474	#if defined( __nopointer )
475	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
476	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
477	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
478	#else
479	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
480	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
481	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
482	#endif
483
484	!
485	!-- 3D-arrays needed for humidity only
486	IF ( humidity ) THEN
487	#if defined( __nopointer )
488	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
489	#else
490	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
491	#endif
492
493	IF ( cloud_physics ) THEN
494
495	!
496	!-- Liquid water content
497	#if defined( __nopointer )
498	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
499	#else
500	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
501	#endif
502	!
503	!-- Precipitation amount and rate (only needed if output is switched)
504	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
505	precipitation_rate(nysg:nyng,nxlg:nxrg) )
506
507	!
508	!-- 3D-cloud water content
509	#if defined( __nopointer )
510	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
511	#else
512	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
513	#endif
514	!
515	!-- 3d-precipitation rate
516	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
517
518	IF ( microphysics_seifert ) THEN
519	!
520	!-- 2D-rain water content and rain drop concentration arrays
521	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
522	qrsws(nysg:nyng,nxlg:nxrg), &
523	qrswst(nysg:nyng,nxlg:nxrg), &
524	nrs(nysg:nyng,nxlg:nxrg), &
525	nrsws(nysg:nyng,nxlg:nxrg), &
526	nrswst(nysg:nyng,nxlg:nxrg) )
527	!
528	!-- 3D-rain water content, rain drop concentration arrays
529	#if defined( __nopointer )
530	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
531	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
532	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
533	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
534	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
535	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
536	#else
537	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
538	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
539	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
540	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
541	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
542	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
543	#endif
544	ENDIF
545
546	ENDIF
547
548	IF ( cloud_droplets ) THEN
549	!
550	!-- Liquid water content, change in liquid water content
551	#if defined( __nopointer )
552	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
553	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
554	#else
555	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
556	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
557	#endif
558	!
559	!-- Real volume of particles (with weighting), volume of particles
560	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
561	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
562	ENDIF
563
564	ENDIF
565
566	ENDIF
567
568	IF ( ocean ) THEN
569	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
570	saswst(nysg:nyng,nxlg:nxrg) )
571	#if defined( __nopointer )
572	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
573	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
574	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
575	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
576	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
577	#else
578	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
579	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
580	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
581	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
582	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
583	prho => prho_1
584	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
585	! density to be apointer
586	#endif
587	IF ( humidity_remote ) THEN
588	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
589	qswst_remote = 0.0_wp
590	ENDIF
591	ENDIF
592
593	!
594	!-- 3D-array for storing the dissipation, needed for calculating the sgs
595	!-- particle velocities
596	IF ( use_sgs_for_particles .OR. wang_kernel .OR. collision_turbulence &
597	.OR. num_acc_per_node > 0 ) THEN
598	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
599	ENDIF
600
601	!
602	!-- 1D-array for large scale subsidence velocity
603	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
604	ALLOCATE ( w_subs(nzb:nzt+1) )
605	w_subs = 0.0_wp
606	ENDIF
607
608	!
609	!-- ID-array and state-space-array for the parallel random number generator
610	IF ( random_generator == 'random-parallel' ) THEN
611	ALLOCATE ( seq_random_array(5,nysg:nyng,nxlg:nxrg) )
612	ALLOCATE ( id_random_array(0:ny,0:nx) )
613	seq_random_array = 0
614	id_random_array = 0
615	ENDIF
616
617	!
618	!-- 4D-array for storing the Rif-values at vertical walls
619	IF ( topography /= 'flat' ) THEN
620	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
621	rif_wall = 0.0_wp
622	ENDIF
623
624	!
625	!-- Arrays to store velocity data from t-dt and the phase speeds which
626	!-- are needed for radiation boundary conditions
627	IF ( outflow_l ) THEN
628	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
629	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
630	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
631	ENDIF
632	IF ( outflow_r ) THEN
633	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
634	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
635	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
636	ENDIF
637	IF ( outflow_l .OR. outflow_r ) THEN
638	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
639	c_w(nzb:nzt+1,nysg:nyng) )
640	ENDIF
641	IF ( outflow_s ) THEN
642	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
643	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
644	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
645	ENDIF
646	IF ( outflow_n ) THEN
647	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
648	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
649	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
650	ENDIF
651	IF ( outflow_s .OR. outflow_n ) THEN
652	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
653	c_w(nzb:nzt+1,nxlg:nxrg) )
654	ENDIF
655	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
656	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
657	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
658	ENDIF
659
660
661	#if ! defined( __nopointer )
662	!
663	!-- Initial assignment of the pointers
664	e => e_1; e_p => e_2; te_m => e_3
665	IF ( .NOT. neutral ) THEN
666	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
667	ELSE
668	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
669	ENDIF
670	u => u_1; u_p => u_2; tu_m => u_3
671	v => v_1; v_p => v_2; tv_m => v_3
672	w => w_1; w_p => w_2; tw_m => w_3
673
674	IF ( humidity .OR. passive_scalar ) THEN
675	q => q_1; q_p => q_2; tq_m => q_3
676	IF ( humidity ) THEN
677	vpt => vpt_1
678	IF ( cloud_physics ) THEN
679	ql => ql_1
680	qc => qc_1
681	IF ( microphysics_seifert ) THEN
682	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
683	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
684	ENDIF
685	ENDIF
686	ENDIF
687	IF ( cloud_droplets ) THEN
688	ql => ql_1
689	ql_c => ql_2
690	ENDIF
691	ENDIF
692
693	IF ( ocean ) THEN
694	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
695	ENDIF
696	#endif
697
698	!
699	!-- Allocate land surface model arrays
700	IF ( land_surface ) THEN
701	CALL lsm_init_arrays
702	ENDIF
703
704	!
705	!-- Allocate wind turbine model arrays
706	IF ( wind_turbine ) THEN
707	CALL wtm_init_arrays
708	ENDIF
709
710	!
711	!-- Allocate arrays containing the RK coefficient for calculation of
712	!-- perturbation pressure and turbulent fluxes. At this point values are
713	!-- set for pressure calculation during initialization (where no timestep
714	!-- is done). Further below the values needed within the timestep scheme
715	!-- will be set.
716	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
717	weight_pres(1:intermediate_timestep_count_max) )
718	weight_substep = 1.0_wp
719	weight_pres = 1.0_wp
720	intermediate_timestep_count = 0 ! needed when simulated_time = 0.0
721
722	CALL location_message( 'finished', .TRUE. )
723
724	!
725	!-- Initialize local summation arrays for routine flow_statistics.
726	!-- This is necessary because they may not yet have been initialized when they
727	!-- are called from flow_statistics (or - depending on the chosen model run -
728	!-- are never initialized)
729	sums_divnew_l = 0.0_wp
730	sums_divold_l = 0.0_wp
731	sums_l_l = 0.0_wp
732	sums_up_fraction_l = 0.0_wp
733	sums_wsts_bc_l = 0.0_wp
734
735
736	!
737	!-- Initialize model variables
738	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
739	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
740	!
741	!-- First model run of a possible job queue.
742	!-- Initial profiles of the variables must be computes.
743	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
744
745	CALL location_message( 'initializing with 1D model profiles', .FALSE. )
746	!
747	!-- Use solutions of the 1D model as initial profiles,
748	!-- start 1D model
749	CALL init_1d_model
750	!
751	!-- Transfer initial profiles to the arrays of the 3D model
752	DO i = nxlg, nxrg
753	DO j = nysg, nyng
754	e(:,j,i) = e1d
755	kh(:,j,i) = kh1d
756	km(:,j,i) = km1d
757	pt(:,j,i) = pt_init
758	u(:,j,i) = u1d
759	v(:,j,i) = v1d
760	ENDDO
761	ENDDO
762
763	IF ( humidity .OR. passive_scalar ) THEN
764	DO i = nxlg, nxrg
765	DO j = nysg, nyng
766	q(:,j,i) = q_init
767	ENDDO
768	ENDDO
769	IF ( cloud_physics .AND. microphysics_seifert ) THEN
770	DO i = nxlg, nxrg
771	DO j = nysg, nyng
772	qr(:,j,i) = 0.0_wp
773	nr(:,j,i) = 0.0_wp
774	ENDDO
775	ENDDO
776
777	ENDIF
778	ENDIF
779
780	IF ( .NOT. constant_diffusion ) THEN
781	DO i = nxlg, nxrg
782	DO j = nysg, nyng
783	e(:,j,i) = e1d
784	ENDDO
785	ENDDO
786	!
787	!-- Store initial profiles for output purposes etc.
788	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
789
790	IF ( constant_flux_layer ) THEN
791	ol = ( zu(nzb+1) - zw(nzb) ) / ( rif1d(nzb+1) + 1.0E-20_wp )
792	ts = 0.0_wp ! could actually be computed more accurately in the
793	! 1D model. Update when opportunity arises.
794	us = us1d
795	usws = usws1d
796	vsws = vsws1d
797	ELSE
798	ts = 0.0_wp ! must be set, because used in
799	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
800	us = 0.0_wp
801	usws = 0.0_wp
802	vsws = 0.0_wp
803	ENDIF
804
805	ELSE
806	e = 0.0_wp ! must be set, because used in
807	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
808	ts = 0.0_wp
809	us = 0.0_wp
810	usws = 0.0_wp
811	vsws = 0.0_wp
812	ENDIF
813	uswst = top_momentumflux_u
814	vswst = top_momentumflux_v
815
816	!
817	!-- In every case qs = 0.0 (see also pt)
818	!-- This could actually be computed more accurately in the 1D model.
819	!-- Update when opportunity arises!
820	IF ( humidity .OR. passive_scalar ) THEN
821	qs = 0.0_wp
822	IF ( cloud_physics .AND. microphysics_seifert ) THEN
823	qrs = 0.0_wp
824	nrs = 0.0_wp
825	ENDIF
826	ENDIF
827
828	!
829	!-- Inside buildings set velocities back to zero
830	IF ( topography /= 'flat' ) THEN
831	DO i = nxlg, nxrg
832	DO j = nysg, nyng
833	u(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
834	v(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
835	ENDDO
836	ENDDO
837
838	!
839	!-- WARNING: The extra boundary conditions set after running the
840	!-- ------- 1D model impose an error on the divergence one layer
841	!-- below the topography; need to correct later
842	!-- ATTENTION: Provisional correction for Piacsek & Williams
843	!-- --------- advection scheme: keep u and v zero one layer below
844	!-- the topography.
845	IF ( ibc_uv_b == 1 ) THEN
846	!
847	!-- Neumann condition
848	DO i = nxl-1, nxr+1
849	DO j = nys-1, nyn+1
850	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
851	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
852	ENDDO
853	ENDDO
854
855	ENDIF
856
857	ENDIF
858
859	CALL location_message( 'finished', .TRUE. )
860
861	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
862	THEN
863
864	CALL location_message( 'initializing with constant profiles', .FALSE. )
865	!
866	!-- Overwrite initial profiles in case of nudging
867	IF ( nudging ) THEN
868	pt_init = ptnudge(:,1)
869	u_init = unudge(:,1)
870	v_init = vnudge(:,1)
871	IF ( humidity .OR. passive_scalar ) THEN
872	q_init = qnudge(:,1)
873	ENDIF
874
875	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
876	'scalars from NUDGING_DATA are used.'
877	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
878	ENDIF
879
880	!
881	!-- Use constructed initial profiles (velocity constant with height,
882	!-- temperature profile with constant gradient)
883	DO i = nxlg, nxrg
884	DO j = nysg, nyng
885	pt(:,j,i) = pt_init
886	u(:,j,i) = u_init
887	v(:,j,i) = v_init
888	ENDDO
889	ENDDO
890
891	!
892	!-- Set initial horizontal velocities at the lowest computational grid
893	!-- levels to zero in order to avoid too small time steps caused by the
894	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
895	!-- in the limiting formula!).
896	IF ( ibc_uv_b /= 1 ) THEN
897	DO i = nxlg, nxrg
898	DO j = nysg, nyng
899	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0_wp
900	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0_wp
901	ENDDO
902	ENDDO
903	ENDIF
904
905	IF ( humidity .OR. passive_scalar ) THEN
906	DO i = nxlg, nxrg
907	DO j = nysg, nyng
908	q(:,j,i) = q_init
909	ENDDO
910	ENDDO
911	IF ( cloud_physics .AND. microphysics_seifert ) THEN
912
913	DO i = nxlg, nxrg
914	DO j = nysg, nyng
915	qr(:,j,i) = 0.0_wp
916	nr(:,j,i) = 0.0_wp
917	ENDDO
918	ENDDO
919
920	ENDIF
921	ENDIF
922
923	IF ( ocean ) THEN
924	DO i = nxlg, nxrg
925	DO j = nysg, nyng
926	sa(:,j,i) = sa_init
927	ENDDO
928	ENDDO
929	ENDIF
930
931	IF ( constant_diffusion ) THEN
932	km = km_constant
933	kh = km / prandtl_number
934	e = 0.0_wp
935	ELSEIF ( e_init > 0.0_wp ) THEN
936	DO k = nzb+1, nzt
937	km(k,:,:) = 0.1_wp * l_grid(k) * SQRT( e_init )
938	ENDDO
939	km(nzb,:,:) = km(nzb+1,:,:)
940	km(nzt+1,:,:) = km(nzt,:,:)
941	kh = km / prandtl_number
942	e = e_init
943	ELSE
944	IF ( .NOT. ocean ) THEN
945	kh = 0.01_wp ! there must exist an initial diffusion, because
946	km = 0.01_wp ! otherwise no TKE would be produced by the
947	! production terms, as long as not yet
948	! e = (u/cm)*2 at k=nzb+1
949	ELSE
950	kh = 0.00001_wp
951	km = 0.00001_wp
952	ENDIF
953	e = 0.0_wp
954	ENDIF
955	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min
956	ts = 0.0_wp
957	!
958	!-- Very small number is required for calculation of Obukhov length
959	!-- at first timestep
960	us = 1E-30_wp
961	usws = 0.0_wp
962	uswst = top_momentumflux_u
963	vsws = 0.0_wp
964	vswst = top_momentumflux_v
965	IF ( humidity .OR. passive_scalar ) qs = 0.0_wp
966
967	!
968	!-- Compute initial temperature field and other constants used in case
969	!-- of a sloping surface
970	IF ( sloping_surface ) CALL init_slope
971
972	CALL location_message( 'finished', .TRUE. )
973
974	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
975	THEN
976
977	CALL location_message( 'initializing by user', .FALSE. )
978	!
979	!-- Initialization will completely be done by the user
980	CALL user_init_3d_model
981
982	CALL location_message( 'finished', .TRUE. )
983
984	ENDIF
985
986	CALL location_message( 'initializing statistics, boundary conditions, etc.', &
987	.FALSE. )
988
989	!
990	!-- Bottom boundary
991	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
992	u(nzb,:,:) = 0.0_wp
993	v(nzb,:,:) = 0.0_wp
994	ENDIF
995
996	!
997	!-- Apply channel flow boundary condition
998	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
999	u(nzt+1,:,:) = 0.0_wp
1000	v(nzt+1,:,:) = 0.0_wp
1001	ENDIF
1002
1003	!
1004	!-- Calculate virtual potential temperature
1005	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
1006
1007	!
1008	!-- Store initial profiles for output purposes etc.
1009	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
1010	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
1011	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
1012	hom(nzb,1,5,:) = 0.0_wp
1013	hom(nzb,1,6,:) = 0.0_wp
1014	ENDIF
1015	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1016	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
1017	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
1018
1019	IF ( ocean ) THEN
1020	!
1021	!-- Store initial salinity profile
1022	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
1023	ENDIF
1024
1025	IF ( humidity ) THEN
1026	!
1027	!-- Store initial profile of total water content, virtual potential
1028	!-- temperature
1029	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1030	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
1031	IF ( cloud_physics .OR. cloud_droplets ) THEN
1032	!
1033	!-- Store initial profile of specific humidity and potential
1034	!-- temperature
1035	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1036	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1037	ENDIF
1038	ENDIF
1039
1040	IF ( passive_scalar ) THEN
1041	!
1042	!-- Store initial scalar profile
1043	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1044	ENDIF
1045
1046	!
1047	!-- Initialize the random number generators (from numerical recipes)
1048	CALL random_function_ini
1049
1050	IF ( random_generator == 'random-parallel' ) THEN
1051	!-- Asigning an ID to every vertical gridpoint column
1052	!-- dependig on the ensemble run number.
1053	random_dummy=1
1054	DO j=0,ny
1055	DO i=0,nx
1056	id_random_array(j,i) = random_dummy + 1E6 &
1057	* ( ensemble_member_nr - 1000 )
1058	random_dummy = random_dummy + 1
1059	END DO
1060	ENDDO
1061	!-- Initializing with random_seed_parallel for every vertical
1062	!-- gridpoint column.
1063	random_dummy=0
1064	DO j = nysg, nyng
1065	DO i = nxlg, nxrg
1066	CALL random_seed_parallel (random_sequence=id_random_array(j, i))
1067	CALL random_number_parallel (random_dummy)
1068	CALL random_seed_parallel (get=seq_random_array(:, j, i))
1069	END DO
1070	ENDDO
1071	ENDIF
1072
1073	!
1074	!-- Initialize fluxes at bottom surface
1075	IF ( use_surface_fluxes ) THEN
1076
1077	IF ( constant_heatflux ) THEN
1078	!
1079	!-- Heat flux is prescribed
1080	IF ( random_heatflux ) THEN
1081	CALL disturb_heatflux
1082	ELSE
1083	shf = surface_heatflux
1084	!
1085	!-- Initialize shf with data from external file LSF_DATA
1086	IF ( large_scale_forcing .AND. lsf_surf ) THEN
1087	CALL ls_forcing_surf ( simulated_time )
1088	ENDIF
1089
1090	!
1091	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
1092	IF ( TRIM( topography ) /= 'flat' ) THEN
1093	DO i = nxlg, nxrg
1094	DO j = nysg, nyng
1095	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1096	shf(j,i) = wall_heatflux(0)
1097	ENDIF
1098	ENDDO
1099	ENDDO
1100	ENDIF
1101	ENDIF
1102	ENDIF
1103
1104	!
1105	!-- Determine the near-surface water flux
1106	IF ( humidity .OR. passive_scalar ) THEN
1107	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1108	qrsws = 0.0_wp
1109	nrsws = 0.0_wp
1110	ENDIF
1111	IF ( constant_waterflux ) THEN
1112	qsws = surface_waterflux
1113	!
1114	!-- Over topography surface_waterflux is replaced by
1115	!-- wall_humidityflux(0)
1116	IF ( TRIM( topography ) /= 'flat' ) THEN
1117	wall_qflux = wall_humidityflux
1118	DO i = nxlg, nxrg
1119	DO j = nysg, nyng
1120	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1121	qsws(j,i) = wall_qflux(0)
1122	ENDIF
1123	ENDDO
1124	ENDDO
1125	ENDIF
1126	ENDIF
1127	ENDIF
1128
1129	ENDIF
1130
1131	!
1132	!-- Initialize fluxes at top surface
1133	!-- Currently, only the heatflux and salinity flux can be prescribed.
1134	!-- The latent flux is zero in this case!
1135	IF ( use_top_fluxes ) THEN
1136
1137	IF ( constant_top_heatflux ) THEN
1138	!
1139	!-- Heat flux is prescribed
1140	tswst = top_heatflux
1141
1142	IF ( humidity .OR. passive_scalar ) THEN
1143	qswst = 0.0_wp
1144	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1145	nrswst = 0.0_wp
1146	qrswst = 0.0_wp
1147	ENDIF
1148	ENDIF
1149
1150	IF ( ocean ) THEN
1151	saswsb = bottom_salinityflux
1152	saswst = top_salinityflux
1153	ENDIF
1154	ENDIF
1155
1156	!
1157	!-- Initialization in case of a coupled model run
1158	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1159	tswst = 0.0_wp
1160	ENDIF
1161
1162	ENDIF
1163
1164	!
1165	!-- Initialize Prandtl layer quantities
1166	IF ( constant_flux_layer ) THEN
1167
1168	z0 = roughness_length
1169	z0h = z0h_factor * z0
1170	z0q = z0h_factor * z0
1171
1172	IF ( .NOT. constant_heatflux ) THEN
1173	!
1174	!-- Surface temperature is prescribed. Here the heat flux cannot be
1175	!-- simply estimated, because therefore ol, u* and theta* would have
1176	!-- to be computed by iteration. This is why the heat flux is assumed
1177	!-- to be zero before the first time step. It approaches its correct
1178	!-- value in the course of the first few time steps.
1179	shf = 0.0_wp
1180	ENDIF
1181
1182	IF ( humidity .OR. passive_scalar ) THEN
1183	IF ( .NOT. constant_waterflux ) qsws = 0.0_wp
1184	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1185	qrsws = 0.0_wp
1186	nrsws = 0.0_wp
1187	ENDIF
1188	ENDIF
1189
1190	ENDIF
1191
1192	!
1193	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1194	!-- the reference state will be set (overwritten) in init_ocean)
1195	IF ( use_single_reference_value ) THEN
1196	IF ( .NOT. humidity ) THEN
1197	ref_state(:) = pt_reference
1198	ELSE
1199	ref_state(:) = vpt_reference
1200	ENDIF
1201	ELSE
1202	IF ( .NOT. humidity ) THEN
1203	ref_state(:) = pt_init(:)
1204	ELSE
1205	ref_state(:) = vpt(:,nys,nxl)
1206	ENDIF
1207	ENDIF
1208
1209	!
1210	!-- For the moment, vertical velocity is zero
1211	w = 0.0_wp
1212
1213	!
1214	!-- Initialize array sums (must be defined in first call of pres)
1215	sums = 0.0_wp
1216
1217	!
1218	!-- In case of iterative solvers, p must get an initial value
1219	IF ( psolver(1:9) == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
1220
1221	!
1222	!-- Treating cloud physics, liquid water content and precipitation amount
1223	!-- are zero at beginning of the simulation
1224	IF ( cloud_physics ) THEN
1225	ql = 0.0_wp
1226	qc = 0.0_wp
1227
1228	precipitation_amount = 0.0_wp
1229	ENDIF
1230	!
1231	!-- Impose vortex with vertical axis on the initial velocity profile
1232	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1233	CALL init_rankine
1234	ENDIF
1235
1236	!
1237	!-- Impose temperature anomaly (advection test only)
1238	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1239	CALL init_pt_anomaly
1240	ENDIF
1241
1242	!
1243	!-- If required, change the surface temperature at the start of the 3D run
1244	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
1245	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1246	ENDIF
1247
1248	!
1249	!-- If required, change the surface humidity/scalar at the start of the 3D
1250	!-- run
1251	IF ( ( humidity .OR. passive_scalar ) .AND. &
1252	q_surface_initial_change /= 0.0_wp ) THEN
1253	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1254	ENDIF
1255
1256	!
1257	!-- Initialize old and new time levels.
1258	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
1259	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1260
1261	IF ( humidity .OR. passive_scalar ) THEN
1262	tq_m = 0.0_wp
1263	q_p = q
1264	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1265	tqr_m = 0.0_wp
1266	qr_p = qr
1267	tnr_m = 0.0_wp
1268	nr_p = nr
1269	ENDIF
1270	ENDIF
1271
1272	IF ( ocean ) THEN
1273	tsa_m = 0.0_wp
1274	sa_p = sa
1275	ENDIF
1276
1277	CALL location_message( 'finished', .TRUE. )
1278
1279	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1280	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1281	THEN
1282
1283	CALL location_message( 'initializing in case of restart / cyclic_fill', &
1284	.FALSE. )
1285	!
1286	!-- When reading data for cyclic fill of 3D prerun data files, read
1287	!-- some of the global variables from the restart file which are required
1288	!-- for initializing the inflow
1289	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1290
1291	DO i = 0, io_blocks-1
1292	IF ( i == io_group ) THEN
1293	CALL read_parts_of_var_list
1294	CALL close_file( 13 )
1295	ENDIF
1296	#if defined( __parallel )
1297	CALL MPI_BARRIER( comm2d, ierr )
1298	#endif
1299	ENDDO
1300
1301	ENDIF
1302
1303	!
1304	!-- Read binary data from restart file
1305	DO i = 0, io_blocks-1
1306	IF ( i == io_group ) THEN
1307	CALL read_3d_binary
1308	ENDIF
1309	#if defined( __parallel )
1310	CALL MPI_BARRIER( comm2d, ierr )
1311	#endif
1312	ENDDO
1313
1314	!
1315	!-- Initialization of the turbulence recycling method
1316	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1317	turbulent_inflow ) THEN
1318	!
1319	!-- First store the profiles to be used at the inflow.
1320	!-- These profiles are the (temporally) and horizontally averaged vertical
1321	!-- profiles from the prerun. Alternatively, prescribed profiles
1322	!-- for u,v-components can be used.
1323	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,6) )
1324
1325	IF ( use_prescribed_profile_data ) THEN
1326	mean_inflow_profiles(:,1) = u_init ! u
1327	mean_inflow_profiles(:,2) = v_init ! v
1328	ELSE
1329	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1330	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1331	ENDIF
1332	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1333	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1334	mean_inflow_profiles(:,6) = hom_sum(:,41,0) ! q
1335
1336	!
1337	!-- If necessary, adjust the horizontal flow field to the prescribed
1338	!-- profiles
1339	IF ( use_prescribed_profile_data ) THEN
1340	DO i = nxlg, nxrg
1341	DO j = nysg, nyng
1342	DO k = nzb, nzt+1
1343	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1344	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1345	ENDDO
1346	ENDDO
1347	ENDDO
1348	ENDIF
1349
1350	!
1351	!-- Use these mean profiles at the inflow (provided that Dirichlet
1352	!-- conditions are used)
1353	IF ( inflow_l ) THEN
1354	DO j = nysg, nyng
1355	DO k = nzb, nzt+1
1356	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1357	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1358	w(k,j,nxlg:-1) = 0.0_wp
1359	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1360	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1361	IF ( humidity .OR. passive_scalar ) &
1362	q(k,j,nxlg:-1) = mean_inflow_profiles(k,6)
1363	ENDDO
1364	ENDDO
1365	ENDIF
1366
1367	!
1368	!-- Calculate the damping factors to be used at the inflow. For a
1369	!-- turbulent inflow the turbulent fluctuations have to be limited
1370	!-- vertically because otherwise the turbulent inflow layer will grow
1371	!-- in time.
1372	IF ( inflow_damping_height == 9999999.9_wp ) THEN
1373	!
1374	!-- Default: use the inversion height calculated by the prerun; if
1375	!-- this is zero, inflow_damping_height must be explicitly
1376	!-- specified.
1377	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
1378	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1379	ELSE
1380	WRITE( message_string, * ) 'inflow_damping_height must be ', &
1381	'explicitly specified because&the inversion height ', &
1382	'calculated by the prerun is zero.'
1383	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1384	ENDIF
1385
1386	ENDIF
1387
1388	IF ( inflow_damping_width == 9999999.9_wp ) THEN
1389	!
1390	!-- Default for the transition range: one tenth of the undamped
1391	!-- layer
1392	inflow_damping_width = 0.1_wp * inflow_damping_height
1393
1394	ENDIF
1395
1396	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1397
1398	DO k = nzb, nzt+1
1399
1400	IF ( zu(k) <= inflow_damping_height ) THEN
1401	inflow_damping_factor(k) = 1.0_wp
1402	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1403	inflow_damping_factor(k) = 1.0_wp - &
1404	( zu(k) - inflow_damping_height ) / &
1405	inflow_damping_width
1406	ELSE
1407	inflow_damping_factor(k) = 0.0_wp
1408	ENDIF
1409
1410	ENDDO
1411
1412	ENDIF
1413
1414	!
1415	!-- Inside buildings set velocities and TKE back to zero
1416	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1417	topography /= 'flat' ) THEN
1418	!
1419	!-- Inside buildings set velocities and TKE back to zero.
1420	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1421	!-- maybe revise later.
1422	DO i = nxlg, nxrg
1423	DO j = nysg, nyng
1424	u (nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1425	v (nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1426	w (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1427	e (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1428	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1429	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1430	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1431	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1432	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1433	ENDDO
1434	ENDDO
1435
1436	ENDIF
1437
1438	!
1439	!-- Calculate initial temperature field and other constants used in case
1440	!-- of a sloping surface
1441	IF ( sloping_surface ) CALL init_slope
1442
1443	!
1444	!-- Initialize new time levels (only done in order to set boundary values
1445	!-- including ghost points)
1446	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1447	IF ( humidity .OR. passive_scalar ) THEN
1448	q_p = q
1449	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1450	qr_p = qr
1451	nr_p = nr
1452	ENDIF
1453	ENDIF
1454	IF ( ocean ) sa_p = sa
1455
1456	!
1457	!-- Allthough tendency arrays are set in prognostic_equations, they have
1458	!-- have to be predefined here because they are used (but multiplied with 0)
1459	!-- there before they are set.
1460	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
1461	IF ( humidity .OR. passive_scalar ) THEN
1462	tq_m = 0.0_wp
1463	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1464	tqr_m = 0.0_wp
1465	tnr_m = 0.0_wp
1466	ENDIF
1467	ENDIF
1468	IF ( ocean ) tsa_m = 0.0_wp
1469
1470	CALL location_message( 'finished', .TRUE. )
1471
1472	ELSE
1473	!
1474	!-- Actually this part of the programm should not be reached
1475	message_string = 'unknown initializing problem'
1476	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1477	ENDIF
1478
1479
1480	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1481	!
1482	!-- Initialize old timelevels needed for radiation boundary conditions
1483	IF ( outflow_l ) THEN
1484	u_m_l(:,:,:) = u(:,:,1:2)
1485	v_m_l(:,:,:) = v(:,:,0:1)
1486	w_m_l(:,:,:) = w(:,:,0:1)
1487	ENDIF
1488	IF ( outflow_r ) THEN
1489	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1490	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1491	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1492	ENDIF
1493	IF ( outflow_s ) THEN
1494	u_m_s(:,:,:) = u(:,0:1,:)
1495	v_m_s(:,:,:) = v(:,1:2,:)
1496	w_m_s(:,:,:) = w(:,0:1,:)
1497	ENDIF
1498	IF ( outflow_n ) THEN
1499	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1500	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1501	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1502	ENDIF
1503
1504	ENDIF
1505
1506	!
1507	!-- Calculate the initial volume flow at the right and north boundary
1508	IF ( conserve_volume_flow ) THEN
1509
1510	IF ( use_prescribed_profile_data ) THEN
1511
1512	volume_flow_initial_l = 0.0_wp
1513	volume_flow_area_l = 0.0_wp
1514
1515	IF ( nxr == nx ) THEN
1516	DO j = nys, nyn
1517	DO k = nzb_u_inner(j,nx)+1, nzt
1518	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1519	u_init(k) * dzw(k)
1520	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1521	ENDDO
1522	ENDDO
1523	ENDIF
1524
1525	IF ( nyn == ny ) THEN
1526	DO i = nxl, nxr
1527	DO k = nzb_v_inner(ny,i)+1, nzt
1528	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1529	v_init(k) * dzw(k)
1530	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1531	ENDDO
1532	ENDDO
1533	ENDIF
1534
1535	#if defined( __parallel )
1536	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1537	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1538	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1539	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1540
1541	#else
1542	volume_flow_initial = volume_flow_initial_l
1543	volume_flow_area = volume_flow_area_l
1544	#endif
1545
1546	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1547
1548	volume_flow_initial_l = 0.0_wp
1549	volume_flow_area_l = 0.0_wp
1550
1551	IF ( nxr == nx ) THEN
1552	DO j = nys, nyn
1553	DO k = nzb_u_inner(j,nx)+1, nzt
1554	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1555	hom_sum(k,1,0) * dzw(k)
1556	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1557	ENDDO
1558	ENDDO
1559	ENDIF
1560
1561	IF ( nyn == ny ) THEN
1562	DO i = nxl, nxr
1563	DO k = nzb_v_inner(ny,i)+1, nzt
1564	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1565	hom_sum(k,2,0) * dzw(k)
1566	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1567	ENDDO
1568	ENDDO
1569	ENDIF
1570
1571	#if defined( __parallel )
1572	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1573	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1574	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1575	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1576
1577	#else
1578	volume_flow_initial = volume_flow_initial_l
1579	volume_flow_area = volume_flow_area_l
1580	#endif
1581
1582	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1583
1584	volume_flow_initial_l = 0.0_wp
1585	volume_flow_area_l = 0.0_wp
1586
1587	IF ( nxr == nx ) THEN
1588	DO j = nys, nyn
1589	DO k = nzb_u_inner(j,nx)+1, nzt
1590	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1591	u(k,j,nx) * dzw(k)
1592	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1593	ENDDO
1594	ENDDO
1595	ENDIF
1596
1597	IF ( nyn == ny ) THEN
1598	DO i = nxl, nxr
1599	DO k = nzb_v_inner(ny,i)+1, nzt
1600	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1601	v(k,ny,i) * dzw(k)
1602	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1603	ENDDO
1604	ENDDO
1605	ENDIF
1606
1607	#if defined( __parallel )
1608	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1609	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1610	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1611	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1612
1613	#else
1614	volume_flow_initial = volume_flow_initial_l
1615	volume_flow_area = volume_flow_area_l
1616	#endif
1617
1618	ENDIF
1619
1620	!
1621	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1622	!-- from u\|v_bulk instead
1623	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1624	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1625	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1626	ENDIF
1627
1628	ENDIF
1629
1630	!
1631	!-- Initialize quantities for special advections schemes
1632	CALL init_advec
1633
1634	!
1635	!-- Impose random perturbation on the horizontal velocity field and then
1636	!-- remove the divergences from the velocity field at the initial stage
1637	IF ( create_disturbances .AND. disturbance_energy_limit /= 0.0_wp .AND. &
1638	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1639	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1640
1641	CALL location_message( 'creating initial disturbances', .FALSE. )
1642	CALL disturb_field( nzb_u_inner, tend, u )
1643	CALL disturb_field( nzb_v_inner, tend, v )
1644	CALL location_message( 'finished', .TRUE. )
1645
1646	CALL location_message( 'calling pressure solver', .FALSE. )
1647	n_sor = nsor_ini
1648	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1649	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1650	!$acc copyin( weight_pres, weight_substep ) &
1651	!$acc copy( tri, tric, u, v, w )
1652	CALL pres
1653	!$acc end data
1654	n_sor = nsor
1655	CALL location_message( 'finished', .TRUE. )
1656
1657	ENDIF
1658
1659	!
1660	!-- If required, initialize quantities needed for the plant canopy model
1661	CALL location_message( 'initializing plant canopy model', .FALSE. )
1662	IF ( plant_canopy ) CALL pcm_init
1663	CALL location_message( 'finished', .TRUE. )
1664
1665	!
1666	!-- If required, initialize dvrp-software
1667	IF ( dt_dvrp /= 9999999.9_wp ) CALL init_dvrp
1668
1669	IF ( ocean ) THEN
1670	!
1671	!-- Initialize quantities needed for the ocean model
1672	CALL init_ocean
1673
1674	ELSE
1675	!
1676	!-- Initialize quantities for handling cloud physics
1677	!-- This routine must be called before lpm_init, because
1678	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1679	!-- lpm_init) is not defined.
1680	CALL init_cloud_physics
1681	!
1682	!-- Initialize bulk cloud microphysics
1683	CALL microphysics_init
1684	ENDIF
1685
1686	!
1687	!-- If required, initialize particles
1688	IF ( particle_advection ) CALL lpm_init
1689
1690	!
1691	!-- If required, initialize quantities needed for the LSM
1692	IF ( land_surface ) THEN
1693	CALL location_message( 'initializing land surface model', .FALSE. )
1694	CALL lsm_init
1695	CALL location_message( 'finished', .TRUE. )
1696	ENDIF
1697
1698	!
1699	!-- Initialize surface layer (done after LSM as roughness length are required
1700	!-- for initialization
1701	IF ( constant_flux_layer ) THEN
1702	CALL location_message( 'initializing surface layer', .FALSE. )
1703	CALL init_surface_layer_fluxes
1704	CALL location_message( 'finished', .TRUE. )
1705	ENDIF
1706
1707	!
1708	!-- If required, initialize radiation model
1709	IF ( radiation ) THEN
1710	CALL location_message( 'initializing radiation model', .FALSE. )
1711	CALL radiation_init
1712	CALL location_message( 'finished', .TRUE. )
1713	ENDIF
1714
1715	!
1716	!-- If required, initialize quantities needed for the wind turbine model
1717	IF ( wind_turbine ) THEN
1718	CALL location_message( 'initializing wind turbine model', .FALSE. )
1719	CALL wtm_init
1720	CALL location_message( 'finished', .TRUE. )
1721	ENDIF
1722
1723
1724	!
1725	!-- Initialize the ws-scheme.
1726	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1727
1728	!
1729	!-- Setting weighting factors for calculation of perturbation pressure
1730	!-- and turbulent quantities from the RK substeps
1731	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1732
1733	weight_substep(1) = 1._wp/6._wp
1734	weight_substep(2) = 3._wp/10._wp
1735	weight_substep(3) = 8._wp/15._wp
1736
1737	weight_pres(1) = 1._wp/3._wp
1738	weight_pres(2) = 5._wp/12._wp
1739	weight_pres(3) = 1._wp/4._wp
1740
1741	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1742
1743	weight_substep(1) = 1._wp/2._wp
1744	weight_substep(2) = 1._wp/2._wp
1745
1746	weight_pres(1) = 1._wp/2._wp
1747	weight_pres(2) = 1._wp/2._wp
1748
1749	ELSE ! for Euler-method
1750
1751	weight_substep(1) = 1.0_wp
1752	weight_pres(1) = 1.0_wp
1753
1754	ENDIF
1755
1756	!
1757	!-- Initialize Rayleigh damping factors
1758	rdf = 0.0_wp
1759	rdf_sc = 0.0_wp
1760	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
1761	IF ( .NOT. ocean ) THEN
1762	DO k = nzb+1, nzt
1763	IF ( zu(k) >= rayleigh_damping_height ) THEN
1764	rdf(k) = rayleigh_damping_factor * &
1765	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
1766	/ ( zu(nzt) - rayleigh_damping_height ) ) &
1767	)**2
1768	ENDIF
1769	ENDDO
1770	ELSE
1771	DO k = nzt, nzb+1, -1
1772	IF ( zu(k) <= rayleigh_damping_height ) THEN
1773	rdf(k) = rayleigh_damping_factor * &
1774	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
1775	/ ( rayleigh_damping_height - zu(nzb+1) ) ) &
1776	)**2
1777	ENDIF
1778	ENDDO
1779	ENDIF
1780	ENDIF
1781	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1782
1783	!
1784	!-- Initialize the starting level and the vertical smoothing factor used for
1785	!-- the external pressure gradient
1786	dp_smooth_factor = 1.0_wp
1787	IF ( dp_external ) THEN
1788	!
1789	!-- Set the starting level dp_level_ind_b only if it has not been set before
1790	!-- (e.g. in init_grid).
1791	IF ( dp_level_ind_b == 0 ) THEN
1792	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1793	dp_level_ind_b = ind_array(1) - 1 + nzb
1794	! MINLOC uses lower array bound 1
1795	ENDIF
1796	IF ( dp_smooth ) THEN
1797	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
1798	DO k = dp_level_ind_b+1, nzt
1799	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
1800	( REAL( k - dp_level_ind_b, KIND=wp ) / &
1801	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
1802	ENDDO
1803	ENDIF
1804	ENDIF
1805
1806	!
1807	!-- Initialize damping zone for the potential temperature in case of
1808	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1809	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1810	ptdf_x = 0.0_wp
1811	ptdf_y = 0.0_wp
1812	IF ( bc_lr_dirrad ) THEN
1813	DO i = nxl, nxr
1814	IF ( ( i * dx ) < pt_damping_width ) THEN
1815	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
1816	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
1817	REAL( pt_damping_width, KIND=wp ) ) ) )**2
1818	ENDIF
1819	ENDDO
1820	ELSEIF ( bc_lr_raddir ) THEN
1821	DO i = nxl, nxr
1822	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1823	ptdf_x(i) = pt_damping_factor * &
1824	SIN( pi * 0.5_wp * &
1825	( ( i - nx ) * dx + pt_damping_width ) / &
1826	REAL( pt_damping_width, KIND=wp ) )**2
1827	ENDIF
1828	ENDDO
1829	ELSEIF ( bc_ns_dirrad ) THEN
1830	DO j = nys, nyn
1831	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1832	ptdf_y(j) = pt_damping_factor * &
1833	SIN( pi * 0.5_wp * &
1834	( ( j - ny ) * dy + pt_damping_width ) / &
1835	REAL( pt_damping_width, KIND=wp ) )**2
1836	ENDIF
1837	ENDDO
1838	ELSEIF ( bc_ns_raddir ) THEN
1839	DO j = nys, nyn
1840	IF ( ( j * dy ) < pt_damping_width ) THEN
1841	ptdf_y(j) = pt_damping_factor * &
1842	SIN( pi * 0.5_wp * &
1843	( pt_damping_width - j * dy ) / &
1844	REAL( pt_damping_width, KIND=wp ) )**2
1845	ENDIF
1846	ENDDO
1847	ENDIF
1848
1849	!
1850	!-- Pre-set masks for regional statistics. Default is the total model domain.
1851	!-- Ghost points are excluded because counting values at the ghost boundaries
1852	!-- would bias the statistics
1853	rmask = 1.0_wp
1854	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
1855	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
1856
1857	!
1858	!-- User-defined initializing actions. Check afterwards, if maximum number
1859	!-- of allowed timeseries is exceeded
1860	CALL user_init
1861
1862	IF ( dots_num > dots_max ) THEN
1863	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1864	' its maximum of dots_max = ', dots_max, &
1865	' &Please increase dots_max in modules.f90.'
1866	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1867	ENDIF
1868
1869	!
1870	!-- Input binary data file is not needed anymore. This line must be placed
1871	!-- after call of user_init!
1872	CALL close_file( 13 )
1873
1874	!
1875	!-- Compute total sum of active mask grid points
1876	!-- and the mean surface level height for each statistic region
1877	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1878	!-- total domain
1879	!-- ngp_3d: number of grid points of the total domain
1880	ngp_2dh_outer_l = 0
1881	ngp_2dh_outer = 0
1882	ngp_2dh_s_inner_l = 0
1883	ngp_2dh_s_inner = 0
1884	ngp_2dh_l = 0
1885	ngp_2dh = 0
1886	ngp_3d_inner_l = 0.0_wp
1887	ngp_3d_inner = 0
1888	ngp_3d = 0
1889	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1890
1891	mean_surface_level_height = 0.0_wp
1892	mean_surface_level_height_l = 0.0_wp
1893
1894	DO sr = 0, statistic_regions
1895	DO i = nxl, nxr
1896	DO j = nys, nyn
1897	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
1898	!
1899	!-- All xy-grid points
1900	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1901	mean_surface_level_height_l(sr) = mean_surface_level_height_l(sr) &
1902	+ zw(nzb_s_inner(j,i))
1903	!
1904	!-- xy-grid points above topography
1905	DO k = nzb_s_outer(j,i), nz + 1
1906	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1907	ENDDO
1908	DO k = nzb_s_inner(j,i), nz + 1
1909	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1910	ENDDO
1911	!
1912	!-- All grid points of the total domain above topography
1913	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) &
1914	+ ( nz - nzb_s_inner(j,i) + 2 )
1915	ENDIF
1916	ENDDO
1917	ENDDO
1918	ENDDO
1919
1920	sr = statistic_regions + 1
1921	#if defined( __parallel )
1922	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1923	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1924	comm2d, ierr )
1925	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1926	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1927	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1928	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1929	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1930	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1931	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1932	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1933	MPI_SUM, comm2d, ierr )
1934	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1935	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1936	CALL MPI_ALLREDUCE( mean_surface_level_height_l(0), &
1937	mean_surface_level_height(0), sr, MPI_REAL, &
1938	MPI_SUM, comm2d, ierr )
1939	mean_surface_level_height = mean_surface_level_height / REAL( ngp_2dh )
1940	#else
1941	ngp_2dh = ngp_2dh_l
1942	ngp_2dh_outer = ngp_2dh_outer_l
1943	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1944	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1945	mean_surface_level_height = mean_surface_level_height_l / REAL( ngp_2dh_l )
1946	#endif
1947
1948	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1949	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1950
1951	!
1952	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1953	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1954	!-- the respective subdomain lie below the surface topography
1955	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1956	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1957	ngp_3d_inner(:) )
1958	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1959
1960	DEALLOCATE( mean_surface_level_height_l, ngp_2dh_l, ngp_2dh_outer_l, &
1961	ngp_3d_inner_l, ngp_3d_inner_tmp )
1962
1963	CALL location_message( 'leaving init_3d_model', .TRUE. )
1964
1965	END SUBROUTINE init_3d_model

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