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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1378

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1	SUBROUTINE init_3d_model
2
3	!--------------------------------------------------------------------------------!
4	! This file is part of PALM.
5	!
6	! PALM is free software: you can redistribute it and/or modify it under the terms
7	! of the GNU General Public License as published by the Free Software Foundation,
8	! either version 3 of the License, or (at your option) any later version.
9	!
10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13	!
14	! You should have received a copy of the GNU General Public License along with
15	! PALM. If not, see <http://www.gnu.org/licenses/>.
16	!
17	! Copyright 1997-2014 Leibniz Universitaet Hannover
18	!--------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! ------------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: init_3d_model.f90 1362 2014-04-16 15:19:12Z raasch $
27	!
28	! 1361 2014-04-16 15:17:48Z hoffmann
29	! tend_* removed
30	! Bugfix: w_subs is not allocated anymore if it is already allocated
31	!
32	! 1359 2014-04-11 17:15:14Z hoffmann
33	! module lpm_init_mod added to use statements, because lpm_init has become a
34	! module
35	!
36	! 1353 2014-04-08 15:21:23Z heinze
37	! REAL constants provided with KIND-attribute
38	!
39	! 1340 2014-03-25 19:45:13Z kanani
40	! REAL constants defined as wp-kind
41	!
42	! 1322 2014-03-20 16:38:49Z raasch
43	! REAL constants defined as wp-kind
44	! module interfaces removed
45	!
46	! 1320 2014-03-20 08:40:49Z raasch
47	! ONLY-attribute added to USE-statements,
48	! kind-parameters added to all INTEGER and REAL declaration statements,
49	! kinds are defined in new module kinds,
50	! revision history before 2012 removed,
51	! comment fields (!:) to be used for variable explanations added to
52	! all variable declaration statements
53	!
54	! 1316 2014-03-17 07:44:59Z heinze
55	! Bugfix: allocation of w_subs
56	!
57	! 1299 2014-03-06 13:15:21Z heinze
58	! Allocate w_subs due to extension of large scale subsidence in combination
59	! with large scale forcing data (LSF_DATA)
60	!
61	! 1241 2013-10-30 11:36:58Z heinze
62	! Overwrite initial profiles in case of nudging
63	! Inititialize shf and qsws in case of large_scale_forcing
64	!
65	! 1221 2013-09-10 08:59:13Z raasch
66	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
67	! copy
68	!
69	! 1212 2013-08-15 08:46:27Z raasch
70	! array tri is allocated and included in data copy statement
71	!
72	! 1195 2013-07-01 12:27:57Z heinze
73	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
74	!
75	! 1179 2013-06-14 05:57:58Z raasch
76	! allocate and set ref_state to be used in buoyancy terms
77	!
78	! 1171 2013-05-30 11:27:45Z raasch
79	! diss array is allocated with full size if accelerator boards are used
80	!
81	! 1159 2013-05-21 11:58:22Z fricke
82	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
83	!
84	! 1153 2013-05-10 14:33:08Z raasch
85	! diss array is allocated with dummy elements even if it is not needed
86	! (required by PGI 13.4 / CUDA 5.0)
87	!
88	! 1115 2013-03-26 18:16:16Z hoffmann
89	! unused variables removed
90	!
91	! 1113 2013-03-10 02:48:14Z raasch
92	! openACC directive modified
93	!
94	! 1111 2013-03-08 23:54:10Z raasch
95	! openACC directives added for pres
96	! array diss allocated only if required
97	!
98	! 1092 2013-02-02 11:24:22Z raasch
99	! unused variables removed
100	!
101	! 1065 2012-11-22 17:42:36Z hoffmann
102	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
103	!
104	! 1053 2012-11-13 17:11:03Z hoffmann
105	! allocation and initialisation of necessary data arrays for the two-moment
106	! cloud physics scheme the two new prognostic equations (nr, qr):
107	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
108	! +tend_*, prr
109	!
110	! 1036 2012-10-22 13:43:42Z raasch
111	! code put under GPL (PALM 3.9)
112	!
113	! 1032 2012-10-21 13:03:21Z letzel
114	! save memory by not allocating pt_2 in case of neutral = .T.
115	!
116	! 1025 2012-10-07 16:04:41Z letzel
117	! bugfix: swap indices of mask for ghost boundaries
118	!
119	! 1015 2012-09-27 09:23:24Z raasch
120	! mask is set to zero for ghost boundaries
121	!
122	! 1010 2012-09-20 07:59:54Z raasch
123	! cpp switch __nopointer added for pointer free version
124	!
125	! 1003 2012-09-14 14:35:53Z raasch
126	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
127	!
128	! 1001 2012-09-13 14:08:46Z raasch
129	! all actions concerning leapfrog scheme removed
130	!
131	! 996 2012-09-07 10:41:47Z raasch
132	! little reformatting
133	!
134	! 978 2012-08-09 08:28:32Z fricke
135	! outflow damping layer removed
136	! roughness length for scalar quantites z0h added
137	! damping zone for the potential temperatur in case of non-cyclic lateral
138	! boundaries added
139	! initialization of ptdf_x, ptdf_y
140	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
141	!
142	! 849 2012-03-15 10:35:09Z raasch
143	! init_particles renamed lpm_init
144	!
145	! 825 2012-02-19 03:03:44Z raasch
146	! wang_collision_kernel renamed wang_kernel
147	!
148	! Revision 1.1 1998/03/09 16:22:22 raasch
149	! Initial revision
150	!
151	!
152	! Description:
153	! ------------
154	! Allocation of arrays and initialization of the 3D model via
155	! a) pre-run the 1D model
156	! or
157	! b) pre-set constant linear profiles
158	! or
159	! c) read values of a previous run
160	!------------------------------------------------------------------------------!
161
162	USE advec_ws
163
164	USE arrays_3d
165
166	USE cloud_parameters, &
167	ONLY: nc_const, precipitation_amount, precipitation_rate, prr
168
169	USE constants, &
170	ONLY: pi
171
172	USE control_parameters
173
174	USE grid_variables, &
175	ONLY: dx, dy
176
177	USE indices
178
179	USE lpm_init_mod, &
180	ONLY: lpm_init
181
182	USE kinds
183
184	USE ls_forcing_mod
185
186	USE model_1d, &
187	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
188
189	USE netcdf_control
190
191	USE particle_attributes, &
192	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
193
194	USE pegrid
195
196	USE random_function_mod
197
198	USE statistics, &
199	ONLY: hom, hom_sum, pr_palm, rmask, spectrum_x, spectrum_y, &
200	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
201	sums_l_l, sums_up_fraction_l, sums_wsts_bc_l, ts_value, &
202	weight_pres, weight_substep
203
204	USE transpose_indices
205
206	IMPLICIT NONE
207
208	INTEGER(iwp) :: i !:
209	INTEGER(iwp) :: ind_array(1) !:
210	INTEGER(iwp) :: j !:
211	INTEGER(iwp) :: k !:
212	INTEGER(iwp) :: sr !:
213
214	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !:
215
216	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !:
217	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !:
218
219	REAL(wp), DIMENSION(1:2) :: volume_flow_area_l !:
220	REAL(wp), DIMENSION(1:2) :: volume_flow_initial_l !:
221
222	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !:
223	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !:
224
225
226	!
227	!-- Allocate arrays
228	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
229	ngp_3d(0:statistic_regions), &
230	ngp_3d_inner(0:statistic_regions), &
231	ngp_3d_inner_l(0:statistic_regions), &
232	ngp_3d_inner_tmp(0:statistic_regions), &
233	sums_divnew_l(0:statistic_regions), &
234	sums_divold_l(0:statistic_regions) )
235	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
236	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
237	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
238	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
239	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
240	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
241	sums(nzb:nzt+1,pr_palm+max_pr_user), &
242	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
243	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
244	sums_up_fraction_l(10,3,0:statistic_regions), &
245	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
246	ts_value(dots_max,0:statistic_regions) )
247	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
248
249	ALLOCATE( rif(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
250	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
251	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
252	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
253	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
254	z0h(nysg:nyng,nxlg:nxrg) )
255
256	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
257	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
258	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
259	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
260	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
261
262	#if defined( __nopointer )
263	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
264	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
265	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
266	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
267	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
268	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
269	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
270	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
271	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
272	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
273	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
274	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
275	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
276	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
277	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
278	#else
279	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
280	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
281	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
282	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
283	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
284	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
285	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
286	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
287	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
288	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
289	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
290	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
291	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
292	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
293	IF ( .NOT. neutral ) THEN
294	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
295	ENDIF
296	#endif
297
298	!
299	!-- Following array is required for perturbation pressure within the iterative
300	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
301	!-- the weighted average of the substeps and cannot be used in the Poisson
302	!-- solver.
303	IF ( psolver == 'sor' ) THEN
304	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
305	ELSEIF ( psolver == 'multigrid' ) THEN
306	!
307	!-- For performance reasons, multigrid is using one ghost layer only
308	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
309	ENDIF
310
311	!
312	!-- Array for storing constant coeffficients of the tridiagonal solver
313	IF ( psolver == 'poisfft' ) THEN
314	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
315	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
316	ENDIF
317
318	IF ( humidity .OR. passive_scalar ) THEN
319	!
320	!-- 2D-humidity/scalar arrays
321	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
322	qsws(nysg:nyng,nxlg:nxrg), &
323	qswst(nysg:nyng,nxlg:nxrg) )
324
325	!
326	!-- 3D-humidity/scalar arrays
327	#if defined( __nopointer )
328	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
329	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
330	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
331	#else
332	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
333	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
334	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
335	#endif
336
337	!
338	!-- 3D-arrays needed for humidity only
339	IF ( humidity ) THEN
340	#if defined( __nopointer )
341	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
342	#else
343	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
344	#endif
345
346	IF ( cloud_physics ) THEN
347
348	!
349	!-- Liquid water content
350	#if defined( __nopointer )
351	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
352	#else
353	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
354	#endif
355	!
356	!-- Precipitation amount and rate (only needed if output is switched)
357	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
358	precipitation_rate(nysg:nyng,nxlg:nxrg) )
359
360	IF ( icloud_scheme == 0 ) THEN
361	!
362	!-- 1D-arrays
363	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
364	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
365	!
366	!-- 3D-cloud water content
367	#if defined( __nopointer )
368	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
369	#else
370	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
371	#endif
372
373	IF ( precipitation ) THEN
374	!
375	!-- 1D-arrays
376	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
377
378	!
379	!-- 2D-rain water content and rain drop concentration arrays
380	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
381	qrsws(nysg:nyng,nxlg:nxrg), &
382	qrswst(nysg:nyng,nxlg:nxrg), &
383	nrs(nysg:nyng,nxlg:nxrg), &
384	nrsws(nysg:nyng,nxlg:nxrg), &
385	nrswst(nysg:nyng,nxlg:nxrg) )
386	!
387	!-- 3D-rain water content, rain drop concentration arrays
388	#if defined( __nopointer )
389	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
390	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
391	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
392	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
393	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
394	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
395	#else
396	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
397	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
398	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
399	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
400	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
401	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
402	#endif
403	!
404	!-- 3d-precipitation rate
405	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
406	ENDIF
407
408	ENDIF
409	ENDIF
410
411	IF ( cloud_droplets ) THEN
412	!
413	!-- Liquid water content, change in liquid water content
414	#if defined( __nopointer )
415	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
416	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
417	#else
418	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
419	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
420	#endif
421	!
422	!-- Real volume of particles (with weighting), volume of particles
423	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
424	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
425	ENDIF
426
427	ENDIF
428
429	ENDIF
430
431	IF ( ocean ) THEN
432	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
433	saswst(nysg:nyng,nxlg:nxrg) )
434	#if defined( __nopointer )
435	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
436	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
437	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
438	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
439	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
440	#else
441	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
442	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
443	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
444	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
445	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
446	prho => prho_1
447	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
448	! density to be apointer
449	#endif
450	IF ( humidity_remote ) THEN
451	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
452	qswst_remote = 0.0_wp
453	ENDIF
454	ENDIF
455
456	!
457	!-- 3D-array for storing the dissipation, needed for calculating the sgs
458	!-- particle velocities
459	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence .OR. &
460	num_acc_per_node > 0 ) THEN
461	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
462	ENDIF
463
464	IF ( dt_dosp /= 9999999.9_wp ) THEN
465	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
466	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
467	spectrum_x = 0.0_wp
468	spectrum_y = 0.0_wp
469	ENDIF
470
471	!
472	!-- 1D-array for large scale subsidence velocity
473	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
474	ALLOCATE ( w_subs(nzb:nzt+1) )
475	w_subs = 0.0_wp
476	ENDIF
477
478	!
479	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
480	IF ( plant_canopy ) THEN
481	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
482	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
483	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
484	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
485	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
486
487	IF ( passive_scalar ) THEN
488	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
489	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
490	ENDIF
491
492	IF ( cthf /= 0.0_wp ) THEN
493	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
494	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
495	ENDIF
496
497	ENDIF
498
499	!
500	!-- 4D-array for storing the Rif-values at vertical walls
501	IF ( topography /= 'flat' ) THEN
502	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
503	rif_wall = 0.0_wp
504	ENDIF
505
506	!
507	!-- Arrays to store velocity data from t-dt and the phase speeds which
508	!-- are needed for radiation boundary conditions
509	IF ( outflow_l ) THEN
510	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
511	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
512	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
513	ENDIF
514	IF ( outflow_r ) THEN
515	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
516	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
517	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
518	ENDIF
519	IF ( outflow_l .OR. outflow_r ) THEN
520	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
521	c_w(nzb:nzt+1,nysg:nyng) )
522	ENDIF
523	IF ( outflow_s ) THEN
524	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
525	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
526	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
527	ENDIF
528	IF ( outflow_n ) THEN
529	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
530	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
531	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
532	ENDIF
533	IF ( outflow_s .OR. outflow_n ) THEN
534	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
535	c_w(nzb:nzt+1,nxlg:nxrg) )
536	ENDIF
537	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
538	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
539	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
540	ENDIF
541
542
543	#if ! defined( __nopointer )
544	!
545	!-- Initial assignment of the pointers
546	e => e_1; e_p => e_2; te_m => e_3
547	IF ( .NOT. neutral ) THEN
548	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
549	ELSE
550	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
551	ENDIF
552	u => u_1; u_p => u_2; tu_m => u_3
553	v => v_1; v_p => v_2; tv_m => v_3
554	w => w_1; w_p => w_2; tw_m => w_3
555
556	IF ( humidity .OR. passive_scalar ) THEN
557	q => q_1; q_p => q_2; tq_m => q_3
558	IF ( humidity ) THEN
559	vpt => vpt_1
560	IF ( cloud_physics ) THEN
561	ql => ql_1
562	IF ( icloud_scheme == 0 ) THEN
563	qc => qc_1
564	IF ( precipitation ) THEN
565	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
566	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
567	ENDIF
568	ENDIF
569	ENDIF
570	ENDIF
571	IF ( cloud_droplets ) THEN
572	ql => ql_1
573	ql_c => ql_2
574	ENDIF
575	ENDIF
576
577	IF ( ocean ) THEN
578	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
579	ENDIF
580	#endif
581
582	!
583	!-- Allocate arrays containing the RK coefficient for calculation of
584	!-- perturbation pressure and turbulent fluxes. At this point values are
585	!-- set for pressure calculation during initialization (where no timestep
586	!-- is done). Further below the values needed within the timestep scheme
587	!-- will be set.
588	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
589	weight_pres(1:intermediate_timestep_count_max) )
590	weight_substep = 1.0_wp
591	weight_pres = 1.0_wp
592	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
593
594	!
595	!-- Initialize model variables
596	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
597	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
598	!
599	!-- First model run of a possible job queue.
600	!-- Initial profiles of the variables must be computes.
601	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
602	!
603	!-- Use solutions of the 1D model as initial profiles,
604	!-- start 1D model
605	CALL init_1d_model
606	!
607	!-- Transfer initial profiles to the arrays of the 3D model
608	DO i = nxlg, nxrg
609	DO j = nysg, nyng
610	e(:,j,i) = e1d
611	kh(:,j,i) = kh1d
612	km(:,j,i) = km1d
613	pt(:,j,i) = pt_init
614	u(:,j,i) = u1d
615	v(:,j,i) = v1d
616	ENDDO
617	ENDDO
618
619	IF ( humidity .OR. passive_scalar ) THEN
620	DO i = nxlg, nxrg
621	DO j = nysg, nyng
622	q(:,j,i) = q_init
623	ENDDO
624	ENDDO
625	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
626	precipitation ) THEN
627	DO i = nxlg, nxrg
628	DO j = nysg, nyng
629	qr(:,j,i) = 0.0_wp
630	nr(:,j,i) = 0.0_wp
631	ENDDO
632	ENDDO
633	!
634	!-- Initialze nc_1d with default value
635	nc_1d(:) = nc_const
636
637	ENDIF
638	ENDIF
639
640	IF ( .NOT. constant_diffusion ) THEN
641	DO i = nxlg, nxrg
642	DO j = nysg, nyng
643	e(:,j,i) = e1d
644	ENDDO
645	ENDDO
646	!
647	!-- Store initial profiles for output purposes etc.
648	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
649
650	IF ( prandtl_layer ) THEN
651	rif = rif1d(nzb+1)
652	ts = 0.0_wp ! could actually be computed more accurately in the
653	! 1D model. Update when opportunity arises.
654	us = us1d
655	usws = usws1d
656	vsws = vsws1d
657	ELSE
658	ts = 0.0_wp ! must be set, because used in
659	rif = 0.0_wp ! flowste
660	us = 0.0_wp
661	usws = 0.0_wp
662	vsws = 0.0_wp
663	ENDIF
664
665	ELSE
666	e = 0.0_wp ! must be set, because used in
667	rif = 0.0_wp ! flowste
668	ts = 0.0_wp
669	us = 0.0_wp
670	usws = 0.0_wp
671	vsws = 0.0_wp
672	ENDIF
673	uswst = top_momentumflux_u
674	vswst = top_momentumflux_v
675
676	!
677	!-- In every case qs = 0.0 (see also pt)
678	!-- This could actually be computed more accurately in the 1D model.
679	!-- Update when opportunity arises!
680	IF ( humidity .OR. passive_scalar ) THEN
681	qs = 0.0_wp
682	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
683	precipitation ) THEN
684	qrs = 0.0_wp
685	nrs = 0.0_wp
686	ENDIF
687	ENDIF
688
689	!
690	!-- inside buildings set velocities back to zero
691	IF ( topography /= 'flat' ) THEN
692	DO i = nxl-1, nxr+1
693	DO j = nys-1, nyn+1
694	u(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
695	v(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
696	ENDDO
697	ENDDO
698
699	!
700	!-- WARNING: The extra boundary conditions set after running the
701	!-- ------- 1D model impose an error on the divergence one layer
702	!-- below the topography; need to correct later
703	!-- ATTENTION: Provisional correction for Piacsek & Williams
704	!-- --------- advection scheme: keep u and v zero one layer below
705	!-- the topography.
706	IF ( ibc_uv_b == 1 ) THEN
707	!
708	!-- Neumann condition
709	DO i = nxl-1, nxr+1
710	DO j = nys-1, nyn+1
711	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
712	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
713	ENDDO
714	ENDDO
715
716	ENDIF
717
718	ENDIF
719
720	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
721	THEN
722
723	!
724	!-- Overwrite initial profiles in case of nudging
725	IF ( nudging ) THEN
726	pt_init = ptnudge(:,1)
727	u_init = unudge(:,1)
728	v_init = vnudge(:,1)
729	IF ( humidity .OR. passive_scalar ) THEN
730	q_init = qnudge(:,1)
731	ENDIF
732
733	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
734	'scalars from NUDGING_DATA are used.'
735	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
736	ENDIF
737
738	!
739	!-- Use constructed initial profiles (velocity constant with height,
740	!-- temperature profile with constant gradient)
741	DO i = nxlg, nxrg
742	DO j = nysg, nyng
743	pt(:,j,i) = pt_init
744	u(:,j,i) = u_init
745	v(:,j,i) = v_init
746	ENDDO
747	ENDDO
748
749	!
750	!-- Set initial horizontal velocities at the lowest computational grid
751	!-- levels to zero in order to avoid too small time steps caused by the
752	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
753	!-- in the limiting formula!). The original values are stored to be later
754	!-- used for volume flow control.
755	DO i = nxlg, nxrg
756	DO j = nysg, nyng
757	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0_wp
758	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0_wp
759	ENDDO
760	ENDDO
761
762	IF ( humidity .OR. passive_scalar ) THEN
763	DO i = nxlg, nxrg
764	DO j = nysg, nyng
765	q(:,j,i) = q_init
766	ENDDO
767	ENDDO
768	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
769	!
770	!-- Initialze nc_1d with default value
771	nc_1d(:) = nc_const
772
773	IF ( precipitation ) THEN
774	DO i = nxlg, nxrg
775	DO j = nysg, nyng
776	qr(:,j,i) = 0.0_wp
777	nr(:,j,i) = 0.0_wp
778	ENDDO
779	ENDDO
780	ENDIF
781
782	ENDIF
783	ENDIF
784
785	IF ( ocean ) THEN
786	DO i = nxlg, nxrg
787	DO j = nysg, nyng
788	sa(:,j,i) = sa_init
789	ENDDO
790	ENDDO
791	ENDIF
792
793	IF ( constant_diffusion ) THEN
794	km = km_constant
795	kh = km / prandtl_number
796	e = 0.0_wp
797	ELSEIF ( e_init > 0.0_wp ) THEN
798	DO k = nzb+1, nzt
799	km(k,:,:) = 0.1_wp * l_grid(k) * SQRT( e_init )
800	ENDDO
801	km(nzb,:,:) = km(nzb+1,:,:)
802	km(nzt+1,:,:) = km(nzt,:,:)
803	kh = km / prandtl_number
804	e = e_init
805	ELSE
806	IF ( .NOT. ocean ) THEN
807	kh = 0.01_wp ! there must exist an initial diffusion, because
808	km = 0.01_wp ! otherwise no TKE would be produced by the
809	! production terms, as long as not yet
810	! e = (u/cm)*2 at k=nzb+1
811	ELSE
812	kh = 0.00001_wp
813	km = 0.00001_wp
814	ENDIF
815	e = 0.0_wp
816	ENDIF
817	rif = 0.0_wp
818	ts = 0.0_wp
819	us = 0.0_wp
820	usws = 0.0_wp
821	uswst = top_momentumflux_u
822	vsws = 0.0_wp
823	vswst = top_momentumflux_v
824	IF ( humidity .OR. passive_scalar ) qs = 0.0_wp
825
826	!
827	!-- Compute initial temperature field and other constants used in case
828	!-- of a sloping surface
829	IF ( sloping_surface ) CALL init_slope
830
831	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
832	THEN
833	!
834	!-- Initialization will completely be done by the user
835	CALL user_init_3d_model
836
837	ENDIF
838	!
839	!-- Bottom boundary
840	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
841	u(nzb,:,:) = 0.0_wp
842	v(nzb,:,:) = 0.0_wp
843	ENDIF
844
845	!
846	!-- Apply channel flow boundary condition
847	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
848	u(nzt+1,:,:) = 0.0_wp
849	v(nzt+1,:,:) = 0.0_wp
850	ENDIF
851
852	!
853	!-- Calculate virtual potential temperature
854	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
855
856	!
857	!-- Store initial profiles for output purposes etc.
858	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
859	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
860	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
861	hom(nzb,1,5,:) = 0.0_wp
862	hom(nzb,1,6,:) = 0.0_wp
863	ENDIF
864	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
865	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
866	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
867
868	IF ( ocean ) THEN
869	!
870	!-- Store initial salinity profile
871	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
872	ENDIF
873
874	IF ( humidity ) THEN
875	!
876	!-- Store initial profile of total water content, virtual potential
877	!-- temperature
878	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
879	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
880	IF ( cloud_physics .OR. cloud_droplets ) THEN
881	!
882	!-- Store initial profile of specific humidity and potential
883	!-- temperature
884	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
885	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
886	ENDIF
887	ENDIF
888
889	IF ( passive_scalar ) THEN
890	!
891	!-- Store initial scalar profile
892	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
893	ENDIF
894
895	!
896	!-- Initialize fluxes at bottom surface
897	IF ( use_surface_fluxes ) THEN
898
899	IF ( constant_heatflux ) THEN
900	!
901	!-- Heat flux is prescribed
902	IF ( random_heatflux ) THEN
903	CALL disturb_heatflux
904	ELSE
905	shf = surface_heatflux
906	!
907	!-- Initialize shf with data from external file LSF_DATA
908	IF ( large_scale_forcing .AND. lsf_surf ) THEN
909	CALL ls_forcing_surf ( simulated_time )
910	ENDIF
911
912	!
913	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
914	IF ( TRIM( topography ) /= 'flat' ) THEN
915	DO i = nxlg, nxrg
916	DO j = nysg, nyng
917	IF ( nzb_s_inner(j,i) /= 0 ) THEN
918	shf(j,i) = wall_heatflux(0)
919	ENDIF
920	ENDDO
921	ENDDO
922	ENDIF
923	ENDIF
924	ENDIF
925
926	!
927	!-- Determine the near-surface water flux
928	IF ( humidity .OR. passive_scalar ) THEN
929	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
930	precipitation ) THEN
931	qrsws = 0.0_wp
932	nrsws = 0.0_wp
933	ENDIF
934	IF ( constant_waterflux ) THEN
935	qsws = surface_waterflux
936	!
937	!-- Over topography surface_waterflux is replaced by
938	!-- wall_humidityflux(0)
939	IF ( TRIM( topography ) /= 'flat' ) THEN
940	wall_qflux = wall_humidityflux
941	DO i = nxlg, nxrg
942	DO j = nysg, nyng
943	IF ( nzb_s_inner(j,i) /= 0 ) THEN
944	qsws(j,i) = wall_qflux(0)
945	ENDIF
946	ENDDO
947	ENDDO
948	ENDIF
949	ENDIF
950	ENDIF
951
952	ENDIF
953
954	!
955	!-- Initialize fluxes at top surface
956	!-- Currently, only the heatflux and salinity flux can be prescribed.
957	!-- The latent flux is zero in this case!
958	IF ( use_top_fluxes ) THEN
959
960	IF ( constant_top_heatflux ) THEN
961	!
962	!-- Heat flux is prescribed
963	tswst = top_heatflux
964
965	IF ( humidity .OR. passive_scalar ) THEN
966	qswst = 0.0_wp
967	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
968	precipitation ) THEN
969	nrswst = 0.0_wp
970	qrswst = 0.0_wp
971	ENDIF
972	ENDIF
973
974	IF ( ocean ) THEN
975	saswsb = bottom_salinityflux
976	saswst = top_salinityflux
977	ENDIF
978	ENDIF
979
980	!
981	!-- Initialization in case of a coupled model run
982	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
983	tswst = 0.0_wp
984	ENDIF
985
986	ENDIF
987
988	!
989	!-- Initialize Prandtl layer quantities
990	IF ( prandtl_layer ) THEN
991
992	z0 = roughness_length
993	z0h = z0h_factor * z0
994
995	IF ( .NOT. constant_heatflux ) THEN
996	!
997	!-- Surface temperature is prescribed. Here the heat flux cannot be
998	!-- simply estimated, because therefore rif, u* and theta* would have
999	!-- to be computed by iteration. This is why the heat flux is assumed
1000	!-- to be zero before the first time step. It approaches its correct
1001	!-- value in the course of the first few time steps.
1002	shf = 0.0_wp
1003	ENDIF
1004
1005	IF ( humidity .OR. passive_scalar ) THEN
1006	IF ( .NOT. constant_waterflux ) qsws = 0.0_wp
1007	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1008	precipitation ) THEN
1009	qrsws = 0.0_wp
1010	nrsws = 0.0_wp
1011	ENDIF
1012	ENDIF
1013
1014	ENDIF
1015
1016	!
1017	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1018	!-- the reference state will be set (overwritten) in init_ocean)
1019	IF ( use_single_reference_value ) THEN
1020	IF ( .NOT. humidity ) THEN
1021	ref_state(:) = pt_reference
1022	ELSE
1023	ref_state(:) = vpt_reference
1024	ENDIF
1025	ELSE
1026	IF ( .NOT. humidity ) THEN
1027	ref_state(:) = pt_init(:)
1028	ELSE
1029	ref_state(:) = vpt(:,nys,nxl)
1030	ENDIF
1031	ENDIF
1032
1033	!
1034	!-- For the moment, vertical velocity is zero
1035	w = 0.0_wp
1036
1037	!
1038	!-- Initialize array sums (must be defined in first call of pres)
1039	sums = 0.0_wp
1040
1041	!
1042	!-- In case of iterative solvers, p must get an initial value
1043	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
1044
1045	!
1046	!-- Treating cloud physics, liquid water content and precipitation amount
1047	!-- are zero at beginning of the simulation
1048	IF ( cloud_physics ) THEN
1049	ql = 0.0_wp
1050	IF ( precipitation ) precipitation_amount = 0.0_wp
1051	IF ( icloud_scheme == 0 ) THEN
1052	qc = 0.0_wp
1053	nc_1d = nc_const
1054	ENDIF
1055	ENDIF
1056	!
1057	!-- Impose vortex with vertical axis on the initial velocity profile
1058	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1059	CALL init_rankine
1060	ENDIF
1061
1062	!
1063	!-- Impose temperature anomaly (advection test only)
1064	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1065	CALL init_pt_anomaly
1066	ENDIF
1067
1068	!
1069	!-- If required, change the surface temperature at the start of the 3D run
1070	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
1071	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1072	ENDIF
1073
1074	!
1075	!-- If required, change the surface humidity/scalar at the start of the 3D
1076	!-- run
1077	IF ( ( humidity .OR. passive_scalar ) .AND. &
1078	q_surface_initial_change /= 0.0_wp ) THEN
1079	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1080	ENDIF
1081	!
1082	!-- Initialize the random number generator (from numerical recipes)
1083	CALL random_function_ini
1084
1085	!
1086	!-- Initialize old and new time levels.
1087	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
1088	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1089
1090	IF ( humidity .OR. passive_scalar ) THEN
1091	tq_m = 0.0_wp
1092	q_p = q
1093	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1094	precipitation ) THEN
1095	tqr_m = 0.0_wp
1096	qr_p = qr
1097	tnr_m = 0.0_wp
1098	nr_p = nr
1099	ENDIF
1100	ENDIF
1101
1102	IF ( ocean ) THEN
1103	tsa_m = 0.0_wp
1104	sa_p = sa
1105	ENDIF
1106
1107
1108	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1109	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1110	THEN
1111	!
1112	!-- When reading data for cyclic fill of 3D prerun data files, read
1113	!-- some of the global variables from the restart file which are required
1114	!-- for initializing the inflow
1115	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1116
1117	DO i = 0, io_blocks-1
1118	IF ( i == io_group ) THEN
1119	CALL read_parts_of_var_list
1120	CALL close_file( 13 )
1121	ENDIF
1122	#if defined( __parallel )
1123	CALL MPI_BARRIER( comm2d, ierr )
1124	#endif
1125	ENDDO
1126
1127	ENDIF
1128
1129	!
1130	!-- Read binary data from restart file
1131	DO i = 0, io_blocks-1
1132	IF ( i == io_group ) THEN
1133	CALL read_3d_binary
1134	ENDIF
1135	#if defined( __parallel )
1136	CALL MPI_BARRIER( comm2d, ierr )
1137	#endif
1138	ENDDO
1139
1140	!
1141	!-- Initialization of the turbulence recycling method
1142	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1143	turbulent_inflow ) THEN
1144	!
1145	!-- First store the profiles to be used at the inflow.
1146	!-- These profiles are the (temporally) and horizontally averaged vertical
1147	!-- profiles from the prerun. Alternatively, prescribed profiles
1148	!-- for u,v-components can be used.
1149	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
1150
1151	IF ( use_prescribed_profile_data ) THEN
1152	mean_inflow_profiles(:,1) = u_init ! u
1153	mean_inflow_profiles(:,2) = v_init ! v
1154	ELSE
1155	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1156	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1157	ENDIF
1158	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1159	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1160
1161	!
1162	!-- If necessary, adjust the horizontal flow field to the prescribed
1163	!-- profiles
1164	IF ( use_prescribed_profile_data ) THEN
1165	DO i = nxlg, nxrg
1166	DO j = nysg, nyng
1167	DO k = nzb, nzt+1
1168	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1169	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1170	ENDDO
1171	ENDDO
1172	ENDDO
1173	ENDIF
1174
1175	!
1176	!-- Use these mean profiles at the inflow (provided that Dirichlet
1177	!-- conditions are used)
1178	IF ( inflow_l ) THEN
1179	DO j = nysg, nyng
1180	DO k = nzb, nzt+1
1181	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1182	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1183	w(k,j,nxlg:-1) = 0.0_wp
1184	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1185	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1186	ENDDO
1187	ENDDO
1188	ENDIF
1189
1190	!
1191	!-- Calculate the damping factors to be used at the inflow. For a
1192	!-- turbulent inflow the turbulent fluctuations have to be limited
1193	!-- vertically because otherwise the turbulent inflow layer will grow
1194	!-- in time.
1195	IF ( inflow_damping_height == 9999999.9_wp ) THEN
1196	!
1197	!-- Default: use the inversion height calculated by the prerun; if
1198	!-- this is zero, inflow_damping_height must be explicitly
1199	!-- specified.
1200	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
1201	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1202	ELSE
1203	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1204	'explicitly specified because&the inversion height ', &
1205	'calculated by the prerun is zero.'
1206	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1207	ENDIF
1208
1209	ENDIF
1210
1211	IF ( inflow_damping_width == 9999999.9_wp ) THEN
1212	!
1213	!-- Default for the transition range: one tenth of the undamped
1214	!-- layer
1215	inflow_damping_width = 0.1_wp * inflow_damping_height
1216
1217	ENDIF
1218
1219	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1220
1221	DO k = nzb, nzt+1
1222
1223	IF ( zu(k) <= inflow_damping_height ) THEN
1224	inflow_damping_factor(k) = 1.0_wp
1225	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1226	inflow_damping_factor(k) = 1.0_wp - &
1227	( zu(k) - inflow_damping_height ) / &
1228	inflow_damping_width
1229	ELSE
1230	inflow_damping_factor(k) = 0.0_wp
1231	ENDIF
1232
1233	ENDDO
1234
1235	ENDIF
1236
1237	!
1238	!-- Inside buildings set velocities and TKE back to zero
1239	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1240	topography /= 'flat' ) THEN
1241	!
1242	!-- Inside buildings set velocities and TKE back to zero.
1243	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1244	!-- maybe revise later.
1245	DO i = nxlg, nxrg
1246	DO j = nysg, nyng
1247	u (nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1248	v (nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1249	w (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1250	e (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1251	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1252	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1253	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1254	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1255	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1256	ENDDO
1257	ENDDO
1258
1259	ENDIF
1260
1261	!
1262	!-- Calculate initial temperature field and other constants used in case
1263	!-- of a sloping surface
1264	IF ( sloping_surface ) CALL init_slope
1265
1266	!
1267	!-- Initialize new time levels (only done in order to set boundary values
1268	!-- including ghost points)
1269	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1270	IF ( humidity .OR. passive_scalar ) THEN
1271	q_p = q
1272	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1273	precipitation ) THEN
1274	qr_p = qr
1275	nr_p = nr
1276	ENDIF
1277	ENDIF
1278	IF ( ocean ) sa_p = sa
1279
1280	!
1281	!-- Allthough tendency arrays are set in prognostic_equations, they have
1282	!-- have to be predefined here because they are used (but multiplied with 0)
1283	!-- there before they are set.
1284	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
1285	IF ( humidity .OR. passive_scalar ) THEN
1286	tq_m = 0.0_wp
1287	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1288	precipitation ) THEN
1289	tqr_m = 0.0_wp
1290	tnr_m = 0.0_wp
1291	ENDIF
1292	ENDIF
1293	IF ( ocean ) tsa_m = 0.0_wp
1294
1295	ELSE
1296	!
1297	!-- Actually this part of the programm should not be reached
1298	message_string = 'unknown initializing problem'
1299	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1300	ENDIF
1301
1302
1303	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1304	!
1305	!-- Initialize old timelevels needed for radiation boundary conditions
1306	IF ( outflow_l ) THEN
1307	u_m_l(:,:,:) = u(:,:,1:2)
1308	v_m_l(:,:,:) = v(:,:,0:1)
1309	w_m_l(:,:,:) = w(:,:,0:1)
1310	ENDIF
1311	IF ( outflow_r ) THEN
1312	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1313	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1314	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1315	ENDIF
1316	IF ( outflow_s ) THEN
1317	u_m_s(:,:,:) = u(:,0:1,:)
1318	v_m_s(:,:,:) = v(:,1:2,:)
1319	w_m_s(:,:,:) = w(:,0:1,:)
1320	ENDIF
1321	IF ( outflow_n ) THEN
1322	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1323	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1324	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1325	ENDIF
1326
1327	ENDIF
1328
1329	!
1330	!-- Calculate the initial volume flow at the right and north boundary
1331	IF ( conserve_volume_flow ) THEN
1332
1333	IF ( use_prescribed_profile_data ) THEN
1334
1335	volume_flow_initial_l = 0.0_wp
1336	volume_flow_area_l = 0.0_wp
1337
1338	IF ( nxr == nx ) THEN
1339	DO j = nys, nyn
1340	DO k = nzb_2d(j,nx)+1, nzt
1341	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1342	u_init(k) * dzw(k)
1343	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1344	ENDDO
1345	ENDDO
1346	ENDIF
1347
1348	IF ( nyn == ny ) THEN
1349	DO i = nxl, nxr
1350	DO k = nzb_2d(ny,i)+1, nzt
1351	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1352	v_init(k) * dzw(k)
1353	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1354	ENDDO
1355	ENDDO
1356	ENDIF
1357
1358	#if defined( __parallel )
1359	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1360	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1361	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1362	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1363
1364	#else
1365	volume_flow_initial = volume_flow_initial_l
1366	volume_flow_area = volume_flow_area_l
1367	#endif
1368
1369	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1370
1371	volume_flow_initial_l = 0.0_wp
1372	volume_flow_area_l = 0.0_wp
1373
1374	IF ( nxr == nx ) THEN
1375	DO j = nys, nyn
1376	DO k = nzb_2d(j,nx)+1, nzt
1377	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1378	hom_sum(k,1,0) * dzw(k)
1379	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1380	ENDDO
1381	ENDDO
1382	ENDIF
1383
1384	IF ( nyn == ny ) THEN
1385	DO i = nxl, nxr
1386	DO k = nzb_2d(ny,i)+1, nzt
1387	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1388	hom_sum(k,2,0) * dzw(k)
1389	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1390	ENDDO
1391	ENDDO
1392	ENDIF
1393
1394	#if defined( __parallel )
1395	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1396	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1397	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1398	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1399
1400	#else
1401	volume_flow_initial = volume_flow_initial_l
1402	volume_flow_area = volume_flow_area_l
1403	#endif
1404
1405	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1406
1407	volume_flow_initial_l = 0.0_wp
1408	volume_flow_area_l = 0.0_wp
1409
1410	IF ( nxr == nx ) THEN
1411	DO j = nys, nyn
1412	DO k = nzb_2d(j,nx)+1, nzt
1413	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1414	u(k,j,nx) * dzw(k)
1415	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1416	ENDDO
1417	ENDDO
1418	ENDIF
1419
1420	IF ( nyn == ny ) THEN
1421	DO i = nxl, nxr
1422	DO k = nzb_2d(ny,i)+1, nzt
1423	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1424	v(k,ny,i) * dzw(k)
1425	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1426	ENDDO
1427	ENDDO
1428	ENDIF
1429
1430	#if defined( __parallel )
1431	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1432	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1433	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1434	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1435
1436	#else
1437	volume_flow_initial = volume_flow_initial_l
1438	volume_flow_area = volume_flow_area_l
1439	#endif
1440
1441	ENDIF
1442
1443	!
1444	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1445	!-- from u\|v_bulk instead
1446	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1447	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1448	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1449	ENDIF
1450
1451	ENDIF
1452
1453	!
1454	!-- Initialize quantities for special advections schemes
1455	CALL init_advec
1456
1457	!
1458	!-- Impose random perturbation on the horizontal velocity field and then
1459	!-- remove the divergences from the velocity field at the initial stage
1460	IF ( create_disturbances .AND. &
1461	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1462	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1463
1464	CALL disturb_field( nzb_u_inner, tend, u )
1465	CALL disturb_field( nzb_v_inner, tend, v )
1466	n_sor = nsor_ini
1467	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1468	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1469	!$acc copyin( weight_pres, weight_substep ) &
1470	!$acc copy( tri, tric, u, v, w )
1471	CALL pres
1472	!$acc end data
1473	n_sor = nsor
1474	ENDIF
1475
1476	!
1477	!-- Initialization of the leaf area density
1478	IF ( plant_canopy ) THEN
1479
1480	SELECT CASE ( TRIM( canopy_mode ) )
1481
1482	CASE( 'block' )
1483
1484	DO i = nxlg, nxrg
1485	DO j = nysg, nyng
1486	lad_s(:,j,i) = lad(:)
1487	cdc(:,j,i) = drag_coefficient
1488	IF ( passive_scalar ) THEN
1489	sls(:,j,i) = leaf_surface_concentration
1490	sec(:,j,i) = scalar_exchange_coefficient
1491	ENDIF
1492	ENDDO
1493	ENDDO
1494
1495	CASE DEFAULT
1496
1497	!
1498	!-- The DEFAULT case is reached either if the parameter
1499	!-- canopy mode contains a wrong character string or if the
1500	!-- user has coded a special case in the user interface.
1501	!-- There, the subroutine user_init_plant_canopy checks
1502	!-- which of these two conditions applies.
1503	CALL user_init_plant_canopy
1504
1505	END SELECT
1506
1507	CALL exchange_horiz( lad_s, nbgp )
1508	CALL exchange_horiz( cdc, nbgp )
1509
1510	IF ( passive_scalar ) THEN
1511	CALL exchange_horiz( sls, nbgp )
1512	CALL exchange_horiz( sec, nbgp )
1513	ENDIF
1514
1515	!
1516	!-- Sharp boundaries of the plant canopy in horizontal directions
1517	!-- In vertical direction the interpolation is retained, as the leaf
1518	!-- area density is initialised by prescribing a vertical profile
1519	!-- consisting of piecewise linear segments. The upper boundary
1520	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1521
1522	DO i = nxl, nxr
1523	DO j = nys, nyn
1524	DO k = nzb, nzt+1
1525	IF ( lad_s(k,j,i) > 0.0_wp ) THEN
1526	lad_u(k,j,i) = lad_s(k,j,i)
1527	lad_u(k,j,i+1) = lad_s(k,j,i)
1528	lad_v(k,j,i) = lad_s(k,j,i)
1529	lad_v(k,j+1,i) = lad_s(k,j,i)
1530	ENDIF
1531	ENDDO
1532	DO k = nzb, nzt
1533	lad_w(k,j,i) = 0.5_wp * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1534	ENDDO
1535	ENDDO
1536	ENDDO
1537
1538	lad_w(pch_index,:,:) = 0.0_wp
1539	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1540
1541	CALL exchange_horiz( lad_u, nbgp )
1542	CALL exchange_horiz( lad_v, nbgp )
1543	CALL exchange_horiz( lad_w, nbgp )
1544
1545	!
1546	!-- Initialisation of the canopy heat source distribution
1547	IF ( cthf /= 0.0_wp ) THEN
1548	!
1549	!-- Piecewise evaluation of the leaf area index by
1550	!-- integration of the leaf area density
1551	lai(:,:,:) = 0.0_wp
1552	DO i = nxlg, nxrg
1553	DO j = nysg, nyng
1554	DO k = pch_index-1, 0, -1
1555	lai(k,j,i) = lai(k+1,j,i) + &
1556	( 0.5_wp * ( lad_w(k+1,j,i) + &
1557	lad_s(k+1,j,i) ) * &
1558	( zw(k+1) - zu(k+1) ) ) + &
1559	( 0.5_wp * ( lad_w(k,j,i) + &
1560	lad_s(k+1,j,i) ) * &
1561	( zu(k+1) - zw(k) ) )
1562	ENDDO
1563	ENDDO
1564	ENDDO
1565
1566	!
1567	!-- Evaluation of the upward kinematic vertical heat flux within the
1568	!-- canopy
1569	DO i = nxlg, nxrg
1570	DO j = nysg, nyng
1571	DO k = 0, pch_index
1572	canopy_heat_flux(k,j,i) = cthf * &
1573	exp( -0.6_wp * lai(k,j,i) )
1574	ENDDO
1575	ENDDO
1576	ENDDO
1577
1578	!
1579	!-- The near surface heat flux is derived from the heat flux
1580	!-- distribution within the canopy
1581	shf(:,:) = canopy_heat_flux(0,:,:)
1582
1583	ENDIF
1584
1585	ENDIF
1586
1587	!
1588	!-- If required, initialize dvrp-software
1589	IF ( dt_dvrp /= 9999999.9_wp ) CALL init_dvrp
1590
1591	IF ( ocean ) THEN
1592	!
1593	!-- Initialize quantities needed for the ocean model
1594	CALL init_ocean
1595
1596	ELSE
1597	!
1598	!-- Initialize quantities for handling cloud physics
1599	!-- This routine must be called before lpm_init, because
1600	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1601	!-- lpm_init) is not defined.
1602	CALL init_cloud_physics
1603	ENDIF
1604
1605	!
1606	!-- If required, initialize particles
1607	IF ( particle_advection ) CALL lpm_init
1608
1609	!
1610	!-- Initialize the ws-scheme.
1611	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1612
1613	!
1614	!-- Setting weighting factors for calculation of perturbation pressure
1615	!-- and turbulent quantities from the RK substeps
1616	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1617
1618	weight_substep(1) = 1._wp/6._wp
1619	weight_substep(2) = 3._wp/10._wp
1620	weight_substep(3) = 8._wp/15._wp
1621
1622	weight_pres(1) = 1._wp/3._wp
1623	weight_pres(2) = 5._wp/12._wp
1624	weight_pres(3) = 1._wp/4._wp
1625
1626	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1627
1628	weight_substep(1) = 1._wp/2._wp
1629	weight_substep(2) = 1._wp/2._wp
1630
1631	weight_pres(1) = 1._wp/2._wp
1632	weight_pres(2) = 1._wp/2._wp
1633
1634	ELSE ! for Euler-method
1635
1636	weight_substep(1) = 1.0_wp
1637	weight_pres(1) = 1.0_wp
1638
1639	ENDIF
1640
1641	!
1642	!-- Initialize Rayleigh damping factors
1643	rdf = 0.0_wp
1644	rdf_sc = 0.0_wp
1645	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
1646	IF ( .NOT. ocean ) THEN
1647	DO k = nzb+1, nzt
1648	IF ( zu(k) >= rayleigh_damping_height ) THEN
1649	rdf(k) = rayleigh_damping_factor * &
1650	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
1651	/ ( zu(nzt) - rayleigh_damping_height ) )&
1652	)**2
1653	ENDIF
1654	ENDDO
1655	ELSE
1656	DO k = nzt, nzb+1, -1
1657	IF ( zu(k) <= rayleigh_damping_height ) THEN
1658	rdf(k) = rayleigh_damping_factor * &
1659	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
1660	/ ( rayleigh_damping_height - zu(nzb+1)))&
1661	)**2
1662	ENDIF
1663	ENDDO
1664	ENDIF
1665	ENDIF
1666	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1667
1668	!
1669	!-- Initialize the starting level and the vertical smoothing factor used for
1670	!-- the external pressure gradient
1671	dp_smooth_factor = 1.0_wp
1672	IF ( dp_external ) THEN
1673	!
1674	!-- Set the starting level dp_level_ind_b only if it has not been set before
1675	!-- (e.g. in init_grid).
1676	IF ( dp_level_ind_b == 0 ) THEN
1677	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1678	dp_level_ind_b = ind_array(1) - 1 + nzb
1679	! MINLOC uses lower array bound 1
1680	ENDIF
1681	IF ( dp_smooth ) THEN
1682	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
1683	DO k = dp_level_ind_b+1, nzt
1684	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
1685	( REAL( k - dp_level_ind_b, KIND=wp ) / &
1686	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
1687	ENDDO
1688	ENDIF
1689	ENDIF
1690
1691	!
1692	!-- Initialize damping zone for the potential temperature in case of
1693	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1694	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1695	ptdf_x = 0.0_wp
1696	ptdf_y = 0.0_wp
1697	IF ( bc_lr_dirrad ) THEN
1698	DO i = nxl, nxr
1699	IF ( ( i * dx ) < pt_damping_width ) THEN
1700	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
1701	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
1702	REAL( pt_damping_width, KIND=wp ) ) ) )**2
1703	ENDIF
1704	ENDDO
1705	ELSEIF ( bc_lr_raddir ) THEN
1706	DO i = nxl, nxr
1707	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1708	ptdf_x(i) = pt_damping_factor * &
1709	SIN( pi * 0.5_wp * &
1710	( ( i - nx ) * dx + pt_damping_width ) / &
1711	REAL( pt_damping_width, KIND=wp ) )**2
1712	ENDIF
1713	ENDDO
1714	ELSEIF ( bc_ns_dirrad ) THEN
1715	DO j = nys, nyn
1716	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1717	ptdf_y(j) = pt_damping_factor * &
1718	SIN( pi * 0.5_wp * &
1719	( ( j - ny ) * dy + pt_damping_width ) / &
1720	REAL( pt_damping_width, KIND=wp ) )**2
1721	ENDIF
1722	ENDDO
1723	ELSEIF ( bc_ns_raddir ) THEN
1724	DO j = nys, nyn
1725	IF ( ( j * dy ) < pt_damping_width ) THEN
1726	ptdf_y(j) = pt_damping_factor * &
1727	SIN( pi * 0.5_wp * &
1728	( pt_damping_width - j * dy ) / &
1729	REAL( pt_damping_width, KIND=wp ) )**2
1730	ENDIF
1731	ENDDO
1732	ENDIF
1733
1734	!
1735	!-- Initialize local summation arrays for routine flow_statistics.
1736	!-- This is necessary because they may not yet have been initialized when they
1737	!-- are called from flow_statistics (or - depending on the chosen model run -
1738	!-- are never initialized)
1739	sums_divnew_l = 0.0_wp
1740	sums_divold_l = 0.0_wp
1741	sums_l_l = 0.0_wp
1742	sums_up_fraction_l = 0.0_wp
1743	sums_wsts_bc_l = 0.0_wp
1744
1745	!
1746	!-- Pre-set masks for regional statistics. Default is the total model domain.
1747	!-- Ghost points are excluded because counting values at the ghost boundaries
1748	!-- would bias the statistics
1749	rmask = 1.0_wp
1750	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
1751	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
1752
1753	!
1754	!-- User-defined initializing actions. Check afterwards, if maximum number
1755	!-- of allowed timeseries is exceeded
1756	CALL user_init
1757
1758	IF ( dots_num > dots_max ) THEN
1759	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1760	' its maximum of dots_max = ', dots_max, &
1761	' &Please increase dots_max in modules.f90.'
1762	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1763	ENDIF
1764
1765	!
1766	!-- Input binary data file is not needed anymore. This line must be placed
1767	!-- after call of user_init!
1768	CALL close_file( 13 )
1769
1770	!
1771	!-- Compute total sum of active mask grid points
1772	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1773	!-- total domain
1774	!-- ngp_3d: number of grid points of the total domain
1775	ngp_2dh_outer_l = 0
1776	ngp_2dh_outer = 0
1777	ngp_2dh_s_inner_l = 0
1778	ngp_2dh_s_inner = 0
1779	ngp_2dh_l = 0
1780	ngp_2dh = 0
1781	ngp_3d_inner_l = 0.0_wp
1782	ngp_3d_inner = 0
1783	ngp_3d = 0
1784	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1785
1786	DO sr = 0, statistic_regions
1787	DO i = nxl, nxr
1788	DO j = nys, nyn
1789	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
1790	!
1791	!-- All xy-grid points
1792	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1793	!
1794	!-- xy-grid points above topography
1795	DO k = nzb_s_outer(j,i), nz + 1
1796	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1797	ENDDO
1798	DO k = nzb_s_inner(j,i), nz + 1
1799	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1800	ENDDO
1801	!
1802	!-- All grid points of the total domain above topography
1803	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1804	( nz - nzb_s_inner(j,i) + 2 )
1805	ENDIF
1806	ENDDO
1807	ENDDO
1808	ENDDO
1809
1810	sr = statistic_regions + 1
1811	#if defined( __parallel )
1812	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1813	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1814	comm2d, ierr )
1815	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1816	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1817	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1818	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1819	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1820	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1821	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1822	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1823	MPI_SUM, comm2d, ierr )
1824	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1825	#else
1826	ngp_2dh = ngp_2dh_l
1827	ngp_2dh_outer = ngp_2dh_outer_l
1828	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1829	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1830	#endif
1831
1832	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1833	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1834
1835	!
1836	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1837	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1838	!-- the respective subdomain lie below the surface topography
1839	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1840	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1841	ngp_3d_inner(:) )
1842	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1843
1844	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1845
1846
1847	END SUBROUTINE init_3d_model

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