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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1727

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

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