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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1321

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

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