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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1501

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

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