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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1693

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

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