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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1344

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

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