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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1745

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

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