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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1626

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

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