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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1691

Last change on this file since 1691 was 1691, checked in by maronga, 9 years ago
various bugfixes and modifications of the atmosphere-land-surface-radiation interaction. Completely re-written routine to calculate surface fluxes (surface_layer_fluxes.f90) that replaces prandtl_fluxes. Minor formatting corrections and renamings
Property svn:keywords set to `Id`
File size: 66.0 KB

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

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