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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1917

Last change on this file since 1917 was 1917, checked in by witha, 7 years ago

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

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