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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1430

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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 1430 2014-07-15 12:57:11Z knoop $
27	!
28	! 1429 2014-07-15 12:53:45Z knoop
29	! Ensemble run capability added to parallel random number generator
30	!
31	! 1411 2014-05-16 18:01:51Z suehring
32	! Initial horizontal velocity profiles were not set to zero at the first vertical
33	! grid level in case of non-cyclic lateral boundary conditions.
34	!
35	! 1406 2014-05-16 13:47:01Z raasch
36	! bugfix: setting of initial velocities at k=1 to zero not in case of a
37	! no-slip boundary condition for uv
38	!
39	! 1402 2014-05-09 14:25:13Z raasch
40	! location messages modified
41	!
42	! 1400 2014-05-09 14:03:54Z knoop
43	! Parallel random number generator added
44	!
45	! 1384 2014-05-02 14:31:06Z raasch
46	! location messages added
47	!
48	! 1361 2014-04-16 15:17:48Z hoffmann
49	! tend_* removed
50	! Bugfix: w_subs is not allocated anymore if it is already allocated
51	!
52	! 1359 2014-04-11 17:15:14Z hoffmann
53	! module lpm_init_mod added to use statements, because lpm_init has become a
54	! module
55	!
56	! 1353 2014-04-08 15:21:23Z heinze
57	! REAL constants provided with KIND-attribute
58	!
59	! 1340 2014-03-25 19:45:13Z kanani
60	! REAL constants defined as wp-kind
61	!
62	! 1322 2014-03-20 16:38:49Z raasch
63	! REAL constants defined as wp-kind
64	! module interfaces removed
65	!
66	! 1320 2014-03-20 08:40:49Z raasch
67	! ONLY-attribute added to USE-statements,
68	! kind-parameters added to all INTEGER and REAL declaration statements,
69	! kinds are defined in new module kinds,
70	! revision history before 2012 removed,
71	! comment fields (!:) to be used for variable explanations added to
72	! all variable declaration statements
73	!
74	! 1316 2014-03-17 07:44:59Z heinze
75	! Bugfix: allocation of w_subs
76	!
77	! 1299 2014-03-06 13:15:21Z heinze
78	! Allocate w_subs due to extension of large scale subsidence in combination
79	! with large scale forcing data (LSF_DATA)
80	!
81	! 1241 2013-10-30 11:36:58Z heinze
82	! Overwrite initial profiles in case of nudging
83	! Inititialize shf and qsws in case of large_scale_forcing
84	!
85	! 1221 2013-09-10 08:59:13Z raasch
86	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
87	! copy
88	!
89	! 1212 2013-08-15 08:46:27Z raasch
90	! array tri is allocated and included in data copy statement
91	!
92	! 1195 2013-07-01 12:27:57Z heinze
93	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
94	!
95	! 1179 2013-06-14 05:57:58Z raasch
96	! allocate and set ref_state to be used in buoyancy terms
97	!
98	! 1171 2013-05-30 11:27:45Z raasch
99	! diss array is allocated with full size if accelerator boards are used
100	!
101	! 1159 2013-05-21 11:58:22Z fricke
102	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
103	!
104	! 1153 2013-05-10 14:33:08Z raasch
105	! diss array is allocated with dummy elements even if it is not needed
106	! (required by PGI 13.4 / CUDA 5.0)
107	!
108	! 1115 2013-03-26 18:16:16Z hoffmann
109	! unused variables removed
110	!
111	! 1113 2013-03-10 02:48:14Z raasch
112	! openACC directive modified
113	!
114	! 1111 2013-03-08 23:54:10Z raasch
115	! openACC directives added for pres
116	! array diss allocated only if required
117	!
118	! 1092 2013-02-02 11:24:22Z raasch
119	! unused variables removed
120	!
121	! 1065 2012-11-22 17:42:36Z hoffmann
122	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
123	!
124	! 1053 2012-11-13 17:11:03Z hoffmann
125	! allocation and initialisation of necessary data arrays for the two-moment
126	! cloud physics scheme the two new prognostic equations (nr, qr):
127	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
128	! +tend_*, prr
129	!
130	! 1036 2012-10-22 13:43:42Z raasch
131	! code put under GPL (PALM 3.9)
132	!
133	! 1032 2012-10-21 13:03:21Z letzel
134	! save memory by not allocating pt_2 in case of neutral = .T.
135	!
136	! 1025 2012-10-07 16:04:41Z letzel
137	! bugfix: swap indices of mask for ghost boundaries
138	!
139	! 1015 2012-09-27 09:23:24Z raasch
140	! mask is set to zero for ghost boundaries
141	!
142	! 1010 2012-09-20 07:59:54Z raasch
143	! cpp switch __nopointer added for pointer free version
144	!
145	! 1003 2012-09-14 14:35:53Z raasch
146	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
147	!
148	! 1001 2012-09-13 14:08:46Z raasch
149	! all actions concerning leapfrog scheme removed
150	!
151	! 996 2012-09-07 10:41:47Z raasch
152	! little reformatting
153	!
154	! 978 2012-08-09 08:28:32Z fricke
155	! outflow damping layer removed
156	! roughness length for scalar quantites z0h added
157	! damping zone for the potential temperatur in case of non-cyclic lateral
158	! boundaries added
159	! initialization of ptdf_x, ptdf_y
160	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
161	!
162	! 849 2012-03-15 10:35:09Z raasch
163	! init_particles renamed lpm_init
164	!
165	! 825 2012-02-19 03:03:44Z raasch
166	! wang_collision_kernel renamed wang_kernel
167	!
168	! Revision 1.1 1998/03/09 16:22:22 raasch
169	! Initial revision
170	!
171	!
172	! Description:
173	! ------------
174	! Allocation of arrays and initialization of the 3D model via
175	! a) pre-run the 1D model
176	! or
177	! b) pre-set constant linear profiles
178	! or
179	! c) read values of a previous run
180	!------------------------------------------------------------------------------!
181
182	USE advec_ws
183
184	USE arrays_3d
185
186	USE cloud_parameters, &
187	ONLY: nc_const, precipitation_amount, precipitation_rate, prr
188
189	USE constants, &
190	ONLY: pi
191
192	USE control_parameters
193
194	USE grid_variables, &
195	ONLY: dx, dy
196
197	USE indices
198
199	USE lpm_init_mod, &
200	ONLY: lpm_init
201
202	USE kinds
203
204	USE ls_forcing_mod
205
206	USE model_1d, &
207	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
208
209	USE netcdf_control
210
211	USE particle_attributes, &
212	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
213
214	USE pegrid
215
216	USE random_function_mod
217
218	USE random_generator_parallel, &
219	ONLY: random_number_parallel, random_seed_parallel, random_dummy, &
220	id_random_array, seq_random_array
221
222	USE statistics, &
223	ONLY: hom, hom_sum, pr_palm, rmask, spectrum_x, spectrum_y, &
224	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
225	sums_l_l, sums_up_fraction_l, sums_wsts_bc_l, ts_value, &
226	weight_pres, weight_substep
227
228	USE transpose_indices
229
230	IMPLICIT NONE
231
232	INTEGER(iwp) :: i !:
233	INTEGER(iwp) :: ind_array(1) !:
234	INTEGER(iwp) :: j !:
235	INTEGER(iwp) :: k !:
236	INTEGER(iwp) :: sr !:
237
238	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !:
239
240	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !:
241	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !:
242
243	REAL(wp), DIMENSION(1:2) :: volume_flow_area_l !:
244	REAL(wp), DIMENSION(1:2) :: volume_flow_initial_l !:
245
246	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !:
247	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !:
248
249
250	CALL location_message( 'allocating arrays', .FALSE. )
251	!
252	!-- Allocate arrays
253	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
254	ngp_3d(0:statistic_regions), &
255	ngp_3d_inner(0:statistic_regions), &
256	ngp_3d_inner_l(0:statistic_regions), &
257	ngp_3d_inner_tmp(0:statistic_regions), &
258	sums_divnew_l(0:statistic_regions), &
259	sums_divold_l(0:statistic_regions) )
260	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
261	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
262	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
263	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
264	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
265	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
266	sums(nzb:nzt+1,pr_palm+max_pr_user), &
267	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
268	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
269	sums_up_fraction_l(10,3,0:statistic_regions), &
270	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
271	ts_value(dots_max,0:statistic_regions) )
272	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
273
274	ALLOCATE( rif(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
275	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
276	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
277	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
278	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
279	z0h(nysg:nyng,nxlg:nxrg) )
280
281	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
282	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
283	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
284	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
285	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
286
287	#if defined( __nopointer )
288	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
289	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
290	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
291	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
292	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
293	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
294	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
295	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
296	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
297	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
298	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
299	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
300	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
301	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
302	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
303	#else
304	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
305	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
306	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
307	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
308	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
309	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
310	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
311	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
312	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
313	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
314	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
315	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
316	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
317	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
318	IF ( .NOT. neutral ) THEN
319	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
320	ENDIF
321	#endif
322
323	!
324	!-- Following array is required for perturbation pressure within the iterative
325	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
326	!-- the weighted average of the substeps and cannot be used in the Poisson
327	!-- solver.
328	IF ( psolver == 'sor' ) THEN
329	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
330	ELSEIF ( psolver == 'multigrid' ) THEN
331	!
332	!-- For performance reasons, multigrid is using one ghost layer only
333	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
334	ENDIF
335
336	!
337	!-- Array for storing constant coeffficients of the tridiagonal solver
338	IF ( psolver == 'poisfft' ) THEN
339	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
340	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
341	ENDIF
342
343	IF ( humidity .OR. passive_scalar ) THEN
344	!
345	!-- 2D-humidity/scalar arrays
346	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
347	qsws(nysg:nyng,nxlg:nxrg), &
348	qswst(nysg:nyng,nxlg:nxrg) )
349
350	!
351	!-- 3D-humidity/scalar arrays
352	#if defined( __nopointer )
353	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
354	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
355	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
356	#else
357	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
358	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
359	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
360	#endif
361
362	!
363	!-- 3D-arrays needed for humidity only
364	IF ( humidity ) THEN
365	#if defined( __nopointer )
366	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
367	#else
368	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
369	#endif
370
371	IF ( cloud_physics ) THEN
372
373	!
374	!-- Liquid water content
375	#if defined( __nopointer )
376	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
377	#else
378	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
379	#endif
380	!
381	!-- Precipitation amount and rate (only needed if output is switched)
382	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
383	precipitation_rate(nysg:nyng,nxlg:nxrg) )
384
385	IF ( icloud_scheme == 0 ) THEN
386	!
387	!-- 1D-arrays
388	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
389	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
390	!
391	!-- 3D-cloud water content
392	#if defined( __nopointer )
393	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
394	#else
395	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
396	#endif
397
398	IF ( precipitation ) THEN
399	!
400	!-- 1D-arrays
401	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
402
403	!
404	!-- 2D-rain water content and rain drop concentration arrays
405	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
406	qrsws(nysg:nyng,nxlg:nxrg), &
407	qrswst(nysg:nyng,nxlg:nxrg), &
408	nrs(nysg:nyng,nxlg:nxrg), &
409	nrsws(nysg:nyng,nxlg:nxrg), &
410	nrswst(nysg:nyng,nxlg:nxrg) )
411	!
412	!-- 3D-rain water content, rain drop concentration arrays
413	#if defined( __nopointer )
414	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
415	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
416	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
417	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
418	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
419	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
420	#else
421	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
422	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
423	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
424	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
425	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
426	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
427	#endif
428	!
429	!-- 3d-precipitation rate
430	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
431	ENDIF
432
433	ENDIF
434	ENDIF
435
436	IF ( cloud_droplets ) THEN
437	!
438	!-- Liquid water content, change in liquid water content
439	#if defined( __nopointer )
440	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
441	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
442	#else
443	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
444	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
445	#endif
446	!
447	!-- Real volume of particles (with weighting), volume of particles
448	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
449	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
450	ENDIF
451
452	ENDIF
453
454	ENDIF
455
456	IF ( ocean ) THEN
457	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
458	saswst(nysg:nyng,nxlg:nxrg) )
459	#if defined( __nopointer )
460	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
461	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
462	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
463	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
464	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
465	#else
466	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
467	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
468	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
469	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
470	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
471	prho => prho_1
472	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
473	! density to be apointer
474	#endif
475	IF ( humidity_remote ) THEN
476	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
477	qswst_remote = 0.0_wp
478	ENDIF
479	ENDIF
480
481	!
482	!-- 3D-array for storing the dissipation, needed for calculating the sgs
483	!-- particle velocities
484	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence .OR. &
485	num_acc_per_node > 0 ) THEN
486	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
487	ENDIF
488
489	IF ( dt_dosp /= 9999999.9_wp ) THEN
490	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
491	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
492	spectrum_x = 0.0_wp
493	spectrum_y = 0.0_wp
494	ENDIF
495
496	!
497	!-- 1D-array for large scale subsidence velocity
498	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
499	ALLOCATE ( w_subs(nzb:nzt+1) )
500	w_subs = 0.0_wp
501	ENDIF
502
503	!
504	!-- ID-array and state-space-array for the parallel random number generator
505	IF ( random_generator == 'random-parallel' ) THEN
506	ALLOCATE ( seq_random_array(5,nysg:nyng,nxlg:nxrg) )
507	ALLOCATE ( id_random_array(0:ny,0:nx) )
508	seq_random_array = 0
509	id_random_array = 0
510	ENDIF
511
512	!
513	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
514	IF ( plant_canopy ) THEN
515	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
516	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
517	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
518	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
519	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
520
521	IF ( passive_scalar ) THEN
522	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
523	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
524	ENDIF
525
526	IF ( cthf /= 0.0_wp ) THEN
527	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
528	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
529	ENDIF
530
531	ENDIF
532
533	!
534	!-- 4D-array for storing the Rif-values at vertical walls
535	IF ( topography /= 'flat' ) THEN
536	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
537	rif_wall = 0.0_wp
538	ENDIF
539
540	!
541	!-- Arrays to store velocity data from t-dt and the phase speeds which
542	!-- are needed for radiation boundary conditions
543	IF ( outflow_l ) THEN
544	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
545	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
546	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
547	ENDIF
548	IF ( outflow_r ) THEN
549	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
550	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
551	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
552	ENDIF
553	IF ( outflow_l .OR. outflow_r ) THEN
554	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
555	c_w(nzb:nzt+1,nysg:nyng) )
556	ENDIF
557	IF ( outflow_s ) THEN
558	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
559	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
560	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
561	ENDIF
562	IF ( outflow_n ) THEN
563	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
564	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
565	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
566	ENDIF
567	IF ( outflow_s .OR. outflow_n ) THEN
568	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
569	c_w(nzb:nzt+1,nxlg:nxrg) )
570	ENDIF
571	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
572	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
573	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
574	ENDIF
575
576
577	#if ! defined( __nopointer )
578	!
579	!-- Initial assignment of the pointers
580	e => e_1; e_p => e_2; te_m => e_3
581	IF ( .NOT. neutral ) THEN
582	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
583	ELSE
584	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
585	ENDIF
586	u => u_1; u_p => u_2; tu_m => u_3
587	v => v_1; v_p => v_2; tv_m => v_3
588	w => w_1; w_p => w_2; tw_m => w_3
589
590	IF ( humidity .OR. passive_scalar ) THEN
591	q => q_1; q_p => q_2; tq_m => q_3
592	IF ( humidity ) THEN
593	vpt => vpt_1
594	IF ( cloud_physics ) THEN
595	ql => ql_1
596	IF ( icloud_scheme == 0 ) THEN
597	qc => qc_1
598	IF ( precipitation ) THEN
599	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
600	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
601	ENDIF
602	ENDIF
603	ENDIF
604	ENDIF
605	IF ( cloud_droplets ) THEN
606	ql => ql_1
607	ql_c => ql_2
608	ENDIF
609	ENDIF
610
611	IF ( ocean ) THEN
612	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
613	ENDIF
614	#endif
615
616	!
617	!-- Allocate arrays containing the RK coefficient for calculation of
618	!-- perturbation pressure and turbulent fluxes. At this point values are
619	!-- set for pressure calculation during initialization (where no timestep
620	!-- is done). Further below the values needed within the timestep scheme
621	!-- will be set.
622	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
623	weight_pres(1:intermediate_timestep_count_max) )
624	weight_substep = 1.0_wp
625	weight_pres = 1.0_wp
626	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
627
628	CALL location_message( 'finished', .TRUE. )
629	!
630	!-- Initialize model variables
631	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
632	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
633	!
634	!-- First model run of a possible job queue.
635	!-- Initial profiles of the variables must be computes.
636	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
637
638	CALL location_message( 'initializing with 1D model profiles', .FALSE. )
639	!
640	!-- Use solutions of the 1D model as initial profiles,
641	!-- start 1D model
642	CALL init_1d_model
643	!
644	!-- Transfer initial profiles to the arrays of the 3D model
645	DO i = nxlg, nxrg
646	DO j = nysg, nyng
647	e(:,j,i) = e1d
648	kh(:,j,i) = kh1d
649	km(:,j,i) = km1d
650	pt(:,j,i) = pt_init
651	u(:,j,i) = u1d
652	v(:,j,i) = v1d
653	ENDDO
654	ENDDO
655
656	IF ( humidity .OR. passive_scalar ) THEN
657	DO i = nxlg, nxrg
658	DO j = nysg, nyng
659	q(:,j,i) = q_init
660	ENDDO
661	ENDDO
662	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
663	precipitation ) THEN
664	DO i = nxlg, nxrg
665	DO j = nysg, nyng
666	qr(:,j,i) = 0.0_wp
667	nr(:,j,i) = 0.0_wp
668	ENDDO
669	ENDDO
670	!
671	!-- Initialze nc_1d with default value
672	nc_1d(:) = nc_const
673
674	ENDIF
675	ENDIF
676
677	IF ( .NOT. constant_diffusion ) THEN
678	DO i = nxlg, nxrg
679	DO j = nysg, nyng
680	e(:,j,i) = e1d
681	ENDDO
682	ENDDO
683	!
684	!-- Store initial profiles for output purposes etc.
685	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
686
687	IF ( prandtl_layer ) THEN
688	rif = rif1d(nzb+1)
689	ts = 0.0_wp ! could actually be computed more accurately in the
690	! 1D model. Update when opportunity arises.
691	us = us1d
692	usws = usws1d
693	vsws = vsws1d
694	ELSE
695	ts = 0.0_wp ! must be set, because used in
696	rif = 0.0_wp ! flowste
697	us = 0.0_wp
698	usws = 0.0_wp
699	vsws = 0.0_wp
700	ENDIF
701
702	ELSE
703	e = 0.0_wp ! must be set, because used in
704	rif = 0.0_wp ! flowste
705	ts = 0.0_wp
706	us = 0.0_wp
707	usws = 0.0_wp
708	vsws = 0.0_wp
709	ENDIF
710	uswst = top_momentumflux_u
711	vswst = top_momentumflux_v
712
713	!
714	!-- In every case qs = 0.0 (see also pt)
715	!-- This could actually be computed more accurately in the 1D model.
716	!-- Update when opportunity arises!
717	IF ( humidity .OR. passive_scalar ) THEN
718	qs = 0.0_wp
719	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
720	precipitation ) THEN
721	qrs = 0.0_wp
722	nrs = 0.0_wp
723	ENDIF
724	ENDIF
725
726	!
727	!-- inside buildings set velocities back to zero
728	IF ( topography /= 'flat' ) THEN
729	DO i = nxl-1, nxr+1
730	DO j = nys-1, nyn+1
731	u(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
732	v(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
733	ENDDO
734	ENDDO
735
736	!
737	!-- WARNING: The extra boundary conditions set after running the
738	!-- ------- 1D model impose an error on the divergence one layer
739	!-- below the topography; need to correct later
740	!-- ATTENTION: Provisional correction for Piacsek & Williams
741	!-- --------- advection scheme: keep u and v zero one layer below
742	!-- the topography.
743	IF ( ibc_uv_b == 1 ) THEN
744	!
745	!-- Neumann condition
746	DO i = nxl-1, nxr+1
747	DO j = nys-1, nyn+1
748	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
749	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
750	ENDDO
751	ENDDO
752
753	ENDIF
754
755	ENDIF
756
757	CALL location_message( 'finished', .TRUE. )
758
759	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
760	THEN
761
762	CALL location_message( 'initializing with constant profiles', .FALSE. )
763	!
764	!-- Overwrite initial profiles in case of nudging
765	IF ( nudging ) THEN
766	pt_init = ptnudge(:,1)
767	u_init = unudge(:,1)
768	v_init = vnudge(:,1)
769	IF ( humidity .OR. passive_scalar ) THEN
770	q_init = qnudge(:,1)
771	ENDIF
772
773	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
774	'scalars from NUDGING_DATA are used.'
775	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
776	ENDIF
777
778	!
779	!-- Use constructed initial profiles (velocity constant with height,
780	!-- temperature profile with constant gradient)
781	DO i = nxlg, nxrg
782	DO j = nysg, nyng
783	pt(:,j,i) = pt_init
784	u(:,j,i) = u_init
785	v(:,j,i) = v_init
786	ENDDO
787	ENDDO
788
789	!
790	!-- Set initial horizontal velocities at the lowest computational grid
791	!-- levels to zero in order to avoid too small time steps caused by the
792	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
793	!-- in the limiting formula!). The original values are stored to be later
794	!-- used for volume flow control.
795	IF ( ibc_uv_b /= 1 .AND. ( .NOT. bc_lr_dirrad .AND. &
796	.NOT. bc_lr_raddir .AND. &
797	.NOT. bc_ns_dirrad .AND. &
798	.NOT. bc_ns_raddir ) ) THEN
799	DO i = nxlg, nxrg
800	DO j = nysg, nyng
801	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0_wp
802	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0_wp
803	ENDDO
804	ENDDO
805	ENDIF
806
807	IF ( humidity .OR. passive_scalar ) THEN
808	DO i = nxlg, nxrg
809	DO j = nysg, nyng
810	q(:,j,i) = q_init
811	ENDDO
812	ENDDO
813	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
814	!
815	!-- Initialze nc_1d with default value
816	nc_1d(:) = nc_const
817
818	IF ( precipitation ) THEN
819	DO i = nxlg, nxrg
820	DO j = nysg, nyng
821	qr(:,j,i) = 0.0_wp
822	nr(:,j,i) = 0.0_wp
823	ENDDO
824	ENDDO
825	ENDIF
826
827	ENDIF
828	ENDIF
829
830	IF ( ocean ) THEN
831	DO i = nxlg, nxrg
832	DO j = nysg, nyng
833	sa(:,j,i) = sa_init
834	ENDDO
835	ENDDO
836	ENDIF
837
838	IF ( constant_diffusion ) THEN
839	km = km_constant
840	kh = km / prandtl_number
841	e = 0.0_wp
842	ELSEIF ( e_init > 0.0_wp ) THEN
843	DO k = nzb+1, nzt
844	km(k,:,:) = 0.1_wp * l_grid(k) * SQRT( e_init )
845	ENDDO
846	km(nzb,:,:) = km(nzb+1,:,:)
847	km(nzt+1,:,:) = km(nzt,:,:)
848	kh = km / prandtl_number
849	e = e_init
850	ELSE
851	IF ( .NOT. ocean ) THEN
852	kh = 0.01_wp ! there must exist an initial diffusion, because
853	km = 0.01_wp ! otherwise no TKE would be produced by the
854	! production terms, as long as not yet
855	! e = (u/cm)*2 at k=nzb+1
856	ELSE
857	kh = 0.00001_wp
858	km = 0.00001_wp
859	ENDIF
860	e = 0.0_wp
861	ENDIF
862	rif = 0.0_wp
863	ts = 0.0_wp
864	us = 0.0_wp
865	usws = 0.0_wp
866	uswst = top_momentumflux_u
867	vsws = 0.0_wp
868	vswst = top_momentumflux_v
869	IF ( humidity .OR. passive_scalar ) qs = 0.0_wp
870
871	!
872	!-- Compute initial temperature field and other constants used in case
873	!-- of a sloping surface
874	IF ( sloping_surface ) CALL init_slope
875
876	CALL location_message( 'finished', .TRUE. )
877
878	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
879	THEN
880
881	CALL location_message( 'initializing by user', .FALSE. )
882	!
883	!-- Initialization will completely be done by the user
884	CALL user_init_3d_model
885
886	CALL location_message( 'finished', .TRUE. )
887
888	ENDIF
889
890	CALL location_message( 'initializing statistics, boundary conditions, etc.', &
891	.FALSE. )
892
893	!
894	!-- Bottom boundary
895	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
896	u(nzb,:,:) = 0.0_wp
897	v(nzb,:,:) = 0.0_wp
898	ENDIF
899
900	!
901	!-- Apply channel flow boundary condition
902	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
903	u(nzt+1,:,:) = 0.0_wp
904	v(nzt+1,:,:) = 0.0_wp
905	ENDIF
906
907	!
908	!-- Calculate virtual potential temperature
909	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
910
911	!
912	!-- Store initial profiles for output purposes etc.
913	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
914	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
915	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
916	hom(nzb,1,5,:) = 0.0_wp
917	hom(nzb,1,6,:) = 0.0_wp
918	ENDIF
919	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
920	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
921	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
922
923	IF ( ocean ) THEN
924	!
925	!-- Store initial salinity profile
926	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
927	ENDIF
928
929	IF ( humidity ) THEN
930	!
931	!-- Store initial profile of total water content, virtual potential
932	!-- temperature
933	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
934	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
935	IF ( cloud_physics .OR. cloud_droplets ) THEN
936	!
937	!-- Store initial profile of specific humidity and potential
938	!-- temperature
939	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
940	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
941	ENDIF
942	ENDIF
943
944	IF ( passive_scalar ) THEN
945	!
946	!-- Store initial scalar profile
947	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
948	ENDIF
949
950	!
951	!-- Initialize the random number generators (from numerical recipes)
952	CALL random_function_ini
953
954	IF ( random_generator == 'random-parallel' ) THEN
955	!-- Asigning an ID to every vertical gridpoint column
956	!-- dependig on the ensemble run number.
957	random_dummy=1
958	DO j=0,ny
959	DO i=0,nx
960	id_random_array(j,i) = random_dummy + 1E6 * ( ensemble_member_nr - 1000 )
961	random_dummy = random_dummy + 1
962	END DO
963	ENDDO
964	!-- Initializing with random_seed_parallel for every vertical
965	!-- gridpoint column.
966	random_dummy=0
967	DO j = nysg, nyng
968	DO i = nxlg, nxrg
969	CALL random_seed_parallel (random_sequence=id_random_array(j, i))
970	CALL random_number_parallel (random_dummy)
971	CALL random_seed_parallel (get=seq_random_array(:, j, i))
972	END DO
973	ENDDO
974	ENDIF
975
976	!
977	!-- Initialize fluxes at bottom surface
978	IF ( use_surface_fluxes ) THEN
979
980	IF ( constant_heatflux ) THEN
981	!
982	!-- Heat flux is prescribed
983	IF ( random_heatflux ) THEN
984	CALL disturb_heatflux
985	ELSE
986	shf = surface_heatflux
987	!
988	!-- Initialize shf with data from external file LSF_DATA
989	IF ( large_scale_forcing .AND. lsf_surf ) THEN
990	CALL ls_forcing_surf ( simulated_time )
991	ENDIF
992
993	!
994	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
995	IF ( TRIM( topography ) /= 'flat' ) THEN
996	DO i = nxlg, nxrg
997	DO j = nysg, nyng
998	IF ( nzb_s_inner(j,i) /= 0 ) THEN
999	shf(j,i) = wall_heatflux(0)
1000	ENDIF
1001	ENDDO
1002	ENDDO
1003	ENDIF
1004	ENDIF
1005	ENDIF
1006
1007	!
1008	!-- Determine the near-surface water flux
1009	IF ( humidity .OR. passive_scalar ) THEN
1010	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1011	precipitation ) THEN
1012	qrsws = 0.0_wp
1013	nrsws = 0.0_wp
1014	ENDIF
1015	IF ( constant_waterflux ) THEN
1016	qsws = surface_waterflux
1017	!
1018	!-- Over topography surface_waterflux is replaced by
1019	!-- wall_humidityflux(0)
1020	IF ( TRIM( topography ) /= 'flat' ) THEN
1021	wall_qflux = wall_humidityflux
1022	DO i = nxlg, nxrg
1023	DO j = nysg, nyng
1024	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1025	qsws(j,i) = wall_qflux(0)
1026	ENDIF
1027	ENDDO
1028	ENDDO
1029	ENDIF
1030	ENDIF
1031	ENDIF
1032
1033	ENDIF
1034
1035	!
1036	!-- Initialize fluxes at top surface
1037	!-- Currently, only the heatflux and salinity flux can be prescribed.
1038	!-- The latent flux is zero in this case!
1039	IF ( use_top_fluxes ) THEN
1040
1041	IF ( constant_top_heatflux ) THEN
1042	!
1043	!-- Heat flux is prescribed
1044	tswst = top_heatflux
1045
1046	IF ( humidity .OR. passive_scalar ) THEN
1047	qswst = 0.0_wp
1048	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1049	precipitation ) THEN
1050	nrswst = 0.0_wp
1051	qrswst = 0.0_wp
1052	ENDIF
1053	ENDIF
1054
1055	IF ( ocean ) THEN
1056	saswsb = bottom_salinityflux
1057	saswst = top_salinityflux
1058	ENDIF
1059	ENDIF
1060
1061	!
1062	!-- Initialization in case of a coupled model run
1063	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1064	tswst = 0.0_wp
1065	ENDIF
1066
1067	ENDIF
1068
1069	!
1070	!-- Initialize Prandtl layer quantities
1071	IF ( prandtl_layer ) THEN
1072
1073	z0 = roughness_length
1074	z0h = z0h_factor * z0
1075
1076	IF ( .NOT. constant_heatflux ) THEN
1077	!
1078	!-- Surface temperature is prescribed. Here the heat flux cannot be
1079	!-- simply estimated, because therefore rif, u* and theta* would have
1080	!-- to be computed by iteration. This is why the heat flux is assumed
1081	!-- to be zero before the first time step. It approaches its correct
1082	!-- value in the course of the first few time steps.
1083	shf = 0.0_wp
1084	ENDIF
1085
1086	IF ( humidity .OR. passive_scalar ) THEN
1087	IF ( .NOT. constant_waterflux ) qsws = 0.0_wp
1088	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1089	precipitation ) THEN
1090	qrsws = 0.0_wp
1091	nrsws = 0.0_wp
1092	ENDIF
1093	ENDIF
1094
1095	ENDIF
1096
1097	!
1098	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1099	!-- the reference state will be set (overwritten) in init_ocean)
1100	IF ( use_single_reference_value ) THEN
1101	IF ( .NOT. humidity ) THEN
1102	ref_state(:) = pt_reference
1103	ELSE
1104	ref_state(:) = vpt_reference
1105	ENDIF
1106	ELSE
1107	IF ( .NOT. humidity ) THEN
1108	ref_state(:) = pt_init(:)
1109	ELSE
1110	ref_state(:) = vpt(:,nys,nxl)
1111	ENDIF
1112	ENDIF
1113
1114	!
1115	!-- For the moment, vertical velocity is zero
1116	w = 0.0_wp
1117
1118	!
1119	!-- Initialize array sums (must be defined in first call of pres)
1120	sums = 0.0_wp
1121
1122	!
1123	!-- In case of iterative solvers, p must get an initial value
1124	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
1125
1126	!
1127	!-- Treating cloud physics, liquid water content and precipitation amount
1128	!-- are zero at beginning of the simulation
1129	IF ( cloud_physics ) THEN
1130	ql = 0.0_wp
1131	IF ( precipitation ) precipitation_amount = 0.0_wp
1132	IF ( icloud_scheme == 0 ) THEN
1133	qc = 0.0_wp
1134	nc_1d = nc_const
1135	ENDIF
1136	ENDIF
1137	!
1138	!-- Impose vortex with vertical axis on the initial velocity profile
1139	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1140	CALL init_rankine
1141	ENDIF
1142
1143	!
1144	!-- Impose temperature anomaly (advection test only)
1145	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1146	CALL init_pt_anomaly
1147	ENDIF
1148
1149	!
1150	!-- If required, change the surface temperature at the start of the 3D run
1151	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
1152	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1153	ENDIF
1154
1155	!
1156	!-- If required, change the surface humidity/scalar at the start of the 3D
1157	!-- run
1158	IF ( ( humidity .OR. passive_scalar ) .AND. &
1159	q_surface_initial_change /= 0.0_wp ) THEN
1160	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1161	ENDIF
1162
1163	!
1164	!-- Initialize old and new time levels.
1165	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
1166	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1167
1168	IF ( humidity .OR. passive_scalar ) THEN
1169	tq_m = 0.0_wp
1170	q_p = q
1171	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1172	precipitation ) THEN
1173	tqr_m = 0.0_wp
1174	qr_p = qr
1175	tnr_m = 0.0_wp
1176	nr_p = nr
1177	ENDIF
1178	ENDIF
1179
1180	IF ( ocean ) THEN
1181	tsa_m = 0.0_wp
1182	sa_p = sa
1183	ENDIF
1184
1185	CALL location_message( 'finished', .TRUE. )
1186
1187	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1188	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1189	THEN
1190
1191	CALL location_message( 'initializing in case of restart / cyclic_fill', &
1192	.FALSE. )
1193	!
1194	!-- When reading data for cyclic fill of 3D prerun data files, read
1195	!-- some of the global variables from the restart file which are required
1196	!-- for initializing the inflow
1197	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1198
1199	DO i = 0, io_blocks-1
1200	IF ( i == io_group ) THEN
1201	CALL read_parts_of_var_list
1202	CALL close_file( 13 )
1203	ENDIF
1204	#if defined( __parallel )
1205	CALL MPI_BARRIER( comm2d, ierr )
1206	#endif
1207	ENDDO
1208
1209	ENDIF
1210
1211	!
1212	!-- Read binary data from restart file
1213	DO i = 0, io_blocks-1
1214	IF ( i == io_group ) THEN
1215	CALL read_3d_binary
1216	ENDIF
1217	#if defined( __parallel )
1218	CALL MPI_BARRIER( comm2d, ierr )
1219	#endif
1220	ENDDO
1221
1222	!
1223	!-- Initialization of the turbulence recycling method
1224	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1225	turbulent_inflow ) THEN
1226	!
1227	!-- First store the profiles to be used at the inflow.
1228	!-- These profiles are the (temporally) and horizontally averaged vertical
1229	!-- profiles from the prerun. Alternatively, prescribed profiles
1230	!-- for u,v-components can be used.
1231	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
1232
1233	IF ( use_prescribed_profile_data ) THEN
1234	mean_inflow_profiles(:,1) = u_init ! u
1235	mean_inflow_profiles(:,2) = v_init ! v
1236	ELSE
1237	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1238	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1239	ENDIF
1240	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1241	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1242
1243	!
1244	!-- If necessary, adjust the horizontal flow field to the prescribed
1245	!-- profiles
1246	IF ( use_prescribed_profile_data ) THEN
1247	DO i = nxlg, nxrg
1248	DO j = nysg, nyng
1249	DO k = nzb, nzt+1
1250	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1251	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1252	ENDDO
1253	ENDDO
1254	ENDDO
1255	ENDIF
1256
1257	!
1258	!-- Use these mean profiles at the inflow (provided that Dirichlet
1259	!-- conditions are used)
1260	IF ( inflow_l ) THEN
1261	DO j = nysg, nyng
1262	DO k = nzb, nzt+1
1263	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1264	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1265	w(k,j,nxlg:-1) = 0.0_wp
1266	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1267	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1268	ENDDO
1269	ENDDO
1270	ENDIF
1271
1272	!
1273	!-- Calculate the damping factors to be used at the inflow. For a
1274	!-- turbulent inflow the turbulent fluctuations have to be limited
1275	!-- vertically because otherwise the turbulent inflow layer will grow
1276	!-- in time.
1277	IF ( inflow_damping_height == 9999999.9_wp ) THEN
1278	!
1279	!-- Default: use the inversion height calculated by the prerun; if
1280	!-- this is zero, inflow_damping_height must be explicitly
1281	!-- specified.
1282	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
1283	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1284	ELSE
1285	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1286	'explicitly specified because&the inversion height ', &
1287	'calculated by the prerun is zero.'
1288	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1289	ENDIF
1290
1291	ENDIF
1292
1293	IF ( inflow_damping_width == 9999999.9_wp ) THEN
1294	!
1295	!-- Default for the transition range: one tenth of the undamped
1296	!-- layer
1297	inflow_damping_width = 0.1_wp * inflow_damping_height
1298
1299	ENDIF
1300
1301	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1302
1303	DO k = nzb, nzt+1
1304
1305	IF ( zu(k) <= inflow_damping_height ) THEN
1306	inflow_damping_factor(k) = 1.0_wp
1307	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1308	inflow_damping_factor(k) = 1.0_wp - &
1309	( zu(k) - inflow_damping_height ) / &
1310	inflow_damping_width
1311	ELSE
1312	inflow_damping_factor(k) = 0.0_wp
1313	ENDIF
1314
1315	ENDDO
1316
1317	ENDIF
1318
1319	!
1320	!-- Inside buildings set velocities and TKE back to zero
1321	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1322	topography /= 'flat' ) THEN
1323	!
1324	!-- Inside buildings set velocities and TKE back to zero.
1325	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1326	!-- maybe revise later.
1327	DO i = nxlg, nxrg
1328	DO j = nysg, nyng
1329	u (nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1330	v (nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1331	w (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1332	e (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1333	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1334	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1335	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1336	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1337	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1338	ENDDO
1339	ENDDO
1340
1341	ENDIF
1342
1343	!
1344	!-- Calculate initial temperature field and other constants used in case
1345	!-- of a sloping surface
1346	IF ( sloping_surface ) CALL init_slope
1347
1348	!
1349	!-- Initialize new time levels (only done in order to set boundary values
1350	!-- including ghost points)
1351	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1352	IF ( humidity .OR. passive_scalar ) THEN
1353	q_p = q
1354	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1355	precipitation ) THEN
1356	qr_p = qr
1357	nr_p = nr
1358	ENDIF
1359	ENDIF
1360	IF ( ocean ) sa_p = sa
1361
1362	!
1363	!-- Allthough tendency arrays are set in prognostic_equations, they have
1364	!-- have to be predefined here because they are used (but multiplied with 0)
1365	!-- there before they are set.
1366	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
1367	IF ( humidity .OR. passive_scalar ) THEN
1368	tq_m = 0.0_wp
1369	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1370	precipitation ) THEN
1371	tqr_m = 0.0_wp
1372	tnr_m = 0.0_wp
1373	ENDIF
1374	ENDIF
1375	IF ( ocean ) tsa_m = 0.0_wp
1376
1377	CALL location_message( 'finished', .TRUE. )
1378
1379	ELSE
1380	!
1381	!-- Actually this part of the programm should not be reached
1382	message_string = 'unknown initializing problem'
1383	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1384	ENDIF
1385
1386
1387	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1388	!
1389	!-- Initialize old timelevels needed for radiation boundary conditions
1390	IF ( outflow_l ) THEN
1391	u_m_l(:,:,:) = u(:,:,1:2)
1392	v_m_l(:,:,:) = v(:,:,0:1)
1393	w_m_l(:,:,:) = w(:,:,0:1)
1394	ENDIF
1395	IF ( outflow_r ) THEN
1396	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1397	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1398	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1399	ENDIF
1400	IF ( outflow_s ) THEN
1401	u_m_s(:,:,:) = u(:,0:1,:)
1402	v_m_s(:,:,:) = v(:,1:2,:)
1403	w_m_s(:,:,:) = w(:,0:1,:)
1404	ENDIF
1405	IF ( outflow_n ) THEN
1406	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1407	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1408	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1409	ENDIF
1410
1411	ENDIF
1412
1413	!
1414	!-- Calculate the initial volume flow at the right and north boundary
1415	IF ( conserve_volume_flow ) THEN
1416
1417	IF ( use_prescribed_profile_data ) THEN
1418
1419	volume_flow_initial_l = 0.0_wp
1420	volume_flow_area_l = 0.0_wp
1421
1422	IF ( nxr == nx ) THEN
1423	DO j = nys, nyn
1424	DO k = nzb_2d(j,nx)+1, nzt
1425	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1426	u_init(k) * dzw(k)
1427	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1428	ENDDO
1429	ENDDO
1430	ENDIF
1431
1432	IF ( nyn == ny ) THEN
1433	DO i = nxl, nxr
1434	DO k = nzb_2d(ny,i)+1, nzt
1435	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1436	v_init(k) * dzw(k)
1437	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1438	ENDDO
1439	ENDDO
1440	ENDIF
1441
1442	#if defined( __parallel )
1443	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1444	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1445	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1446	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1447
1448	#else
1449	volume_flow_initial = volume_flow_initial_l
1450	volume_flow_area = volume_flow_area_l
1451	#endif
1452
1453	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1454
1455	volume_flow_initial_l = 0.0_wp
1456	volume_flow_area_l = 0.0_wp
1457
1458	IF ( nxr == nx ) THEN
1459	DO j = nys, nyn
1460	DO k = nzb_2d(j,nx)+1, nzt
1461	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1462	hom_sum(k,1,0) * dzw(k)
1463	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1464	ENDDO
1465	ENDDO
1466	ENDIF
1467
1468	IF ( nyn == ny ) THEN
1469	DO i = nxl, nxr
1470	DO k = nzb_2d(ny,i)+1, nzt
1471	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1472	hom_sum(k,2,0) * dzw(k)
1473	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1474	ENDDO
1475	ENDDO
1476	ENDIF
1477
1478	#if defined( __parallel )
1479	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1480	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1481	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1482	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1483
1484	#else
1485	volume_flow_initial = volume_flow_initial_l
1486	volume_flow_area = volume_flow_area_l
1487	#endif
1488
1489	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1490
1491	volume_flow_initial_l = 0.0_wp
1492	volume_flow_area_l = 0.0_wp
1493
1494	IF ( nxr == nx ) THEN
1495	DO j = nys, nyn
1496	DO k = nzb_2d(j,nx)+1, nzt
1497	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1498	u(k,j,nx) * dzw(k)
1499	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1500	ENDDO
1501	ENDDO
1502	ENDIF
1503
1504	IF ( nyn == ny ) THEN
1505	DO i = nxl, nxr
1506	DO k = nzb_2d(ny,i)+1, nzt
1507	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1508	v(k,ny,i) * dzw(k)
1509	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1510	ENDDO
1511	ENDDO
1512	ENDIF
1513
1514	#if defined( __parallel )
1515	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1516	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1517	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1518	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1519
1520	#else
1521	volume_flow_initial = volume_flow_initial_l
1522	volume_flow_area = volume_flow_area_l
1523	#endif
1524
1525	ENDIF
1526
1527	!
1528	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1529	!-- from u\|v_bulk instead
1530	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1531	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1532	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1533	ENDIF
1534
1535	ENDIF
1536
1537	!
1538	!-- Initialize quantities for special advections schemes
1539	CALL init_advec
1540
1541	!
1542	!-- Impose random perturbation on the horizontal velocity field and then
1543	!-- remove the divergences from the velocity field at the initial stage
1544	IF ( create_disturbances .AND. &
1545	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1546	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1547
1548	CALL location_message( 'creating initial disturbances', .FALSE. )
1549	CALL disturb_field( nzb_u_inner, tend, u )
1550	CALL disturb_field( nzb_v_inner, tend, v )
1551	CALL location_message( 'finished', .TRUE. )
1552
1553	CALL location_message( 'calling pressure solver', .FALSE. )
1554	n_sor = nsor_ini
1555	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1556	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1557	!$acc copyin( weight_pres, weight_substep ) &
1558	!$acc copy( tri, tric, u, v, w )
1559	CALL pres
1560	!$acc end data
1561	n_sor = nsor
1562	CALL location_message( 'finished', .TRUE. )
1563
1564	ENDIF
1565
1566	!
1567	!-- Initialization of the leaf area density
1568	IF ( plant_canopy ) THEN
1569
1570	SELECT CASE ( TRIM( canopy_mode ) )
1571
1572	CASE( 'block' )
1573
1574	DO i = nxlg, nxrg
1575	DO j = nysg, nyng
1576	lad_s(:,j,i) = lad(:)
1577	cdc(:,j,i) = drag_coefficient
1578	IF ( passive_scalar ) THEN
1579	sls(:,j,i) = leaf_surface_concentration
1580	sec(:,j,i) = scalar_exchange_coefficient
1581	ENDIF
1582	ENDDO
1583	ENDDO
1584
1585	CASE DEFAULT
1586
1587	!
1588	!-- The DEFAULT case is reached either if the parameter
1589	!-- canopy mode contains a wrong character string or if the
1590	!-- user has coded a special case in the user interface.
1591	!-- There, the subroutine user_init_plant_canopy checks
1592	!-- which of these two conditions applies.
1593	CALL user_init_plant_canopy
1594
1595	END SELECT
1596
1597	CALL exchange_horiz( lad_s, nbgp )
1598	CALL exchange_horiz( cdc, nbgp )
1599
1600	IF ( passive_scalar ) THEN
1601	CALL exchange_horiz( sls, nbgp )
1602	CALL exchange_horiz( sec, nbgp )
1603	ENDIF
1604
1605	!
1606	!-- Sharp boundaries of the plant canopy in horizontal directions
1607	!-- In vertical direction the interpolation is retained, as the leaf
1608	!-- area density is initialised by prescribing a vertical profile
1609	!-- consisting of piecewise linear segments. The upper boundary
1610	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1611
1612	DO i = nxl, nxr
1613	DO j = nys, nyn
1614	DO k = nzb, nzt+1
1615	IF ( lad_s(k,j,i) > 0.0_wp ) THEN
1616	lad_u(k,j,i) = lad_s(k,j,i)
1617	lad_u(k,j,i+1) = lad_s(k,j,i)
1618	lad_v(k,j,i) = lad_s(k,j,i)
1619	lad_v(k,j+1,i) = lad_s(k,j,i)
1620	ENDIF
1621	ENDDO
1622	DO k = nzb, nzt
1623	lad_w(k,j,i) = 0.5_wp * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1624	ENDDO
1625	ENDDO
1626	ENDDO
1627
1628	lad_w(pch_index,:,:) = 0.0_wp
1629	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1630
1631	CALL exchange_horiz( lad_u, nbgp )
1632	CALL exchange_horiz( lad_v, nbgp )
1633	CALL exchange_horiz( lad_w, nbgp )
1634
1635	!
1636	!-- Initialisation of the canopy heat source distribution
1637	IF ( cthf /= 0.0_wp ) THEN
1638	!
1639	!-- Piecewise evaluation of the leaf area index by
1640	!-- integration of the leaf area density
1641	lai(:,:,:) = 0.0_wp
1642	DO i = nxlg, nxrg
1643	DO j = nysg, nyng
1644	DO k = pch_index-1, 0, -1
1645	lai(k,j,i) = lai(k+1,j,i) + &
1646	( 0.5_wp * ( lad_w(k+1,j,i) + &
1647	lad_s(k+1,j,i) ) * &
1648	( zw(k+1) - zu(k+1) ) ) + &
1649	( 0.5_wp * ( lad_w(k,j,i) + &
1650	lad_s(k+1,j,i) ) * &
1651	( zu(k+1) - zw(k) ) )
1652	ENDDO
1653	ENDDO
1654	ENDDO
1655
1656	!
1657	!-- Evaluation of the upward kinematic vertical heat flux within the
1658	!-- canopy
1659	DO i = nxlg, nxrg
1660	DO j = nysg, nyng
1661	DO k = 0, pch_index
1662	canopy_heat_flux(k,j,i) = cthf * &
1663	exp( -0.6_wp * lai(k,j,i) )
1664	ENDDO
1665	ENDDO
1666	ENDDO
1667
1668	!
1669	!-- The near surface heat flux is derived from the heat flux
1670	!-- distribution within the canopy
1671	shf(:,:) = canopy_heat_flux(0,:,:)
1672
1673	ENDIF
1674
1675	ENDIF
1676
1677	!
1678	!-- If required, initialize dvrp-software
1679	IF ( dt_dvrp /= 9999999.9_wp ) CALL init_dvrp
1680
1681	IF ( ocean ) THEN
1682	!
1683	!-- Initialize quantities needed for the ocean model
1684	CALL init_ocean
1685
1686	ELSE
1687	!
1688	!-- Initialize quantities for handling cloud physics
1689	!-- This routine must be called before lpm_init, because
1690	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1691	!-- lpm_init) is not defined.
1692	CALL init_cloud_physics
1693	ENDIF
1694
1695	!
1696	!-- If required, initialize particles
1697	IF ( particle_advection ) CALL lpm_init
1698
1699	!
1700	!-- Initialize the ws-scheme.
1701	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1702
1703	!
1704	!-- Setting weighting factors for calculation of perturbation pressure
1705	!-- and turbulent quantities from the RK substeps
1706	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1707
1708	weight_substep(1) = 1._wp/6._wp
1709	weight_substep(2) = 3._wp/10._wp
1710	weight_substep(3) = 8._wp/15._wp
1711
1712	weight_pres(1) = 1._wp/3._wp
1713	weight_pres(2) = 5._wp/12._wp
1714	weight_pres(3) = 1._wp/4._wp
1715
1716	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1717
1718	weight_substep(1) = 1._wp/2._wp
1719	weight_substep(2) = 1._wp/2._wp
1720
1721	weight_pres(1) = 1._wp/2._wp
1722	weight_pres(2) = 1._wp/2._wp
1723
1724	ELSE ! for Euler-method
1725
1726	weight_substep(1) = 1.0_wp
1727	weight_pres(1) = 1.0_wp
1728
1729	ENDIF
1730
1731	!
1732	!-- Initialize Rayleigh damping factors
1733	rdf = 0.0_wp
1734	rdf_sc = 0.0_wp
1735	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
1736	IF ( .NOT. ocean ) THEN
1737	DO k = nzb+1, nzt
1738	IF ( zu(k) >= rayleigh_damping_height ) THEN
1739	rdf(k) = rayleigh_damping_factor * &
1740	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
1741	/ ( zu(nzt) - rayleigh_damping_height ) )&
1742	)**2
1743	ENDIF
1744	ENDDO
1745	ELSE
1746	DO k = nzt, nzb+1, -1
1747	IF ( zu(k) <= rayleigh_damping_height ) THEN
1748	rdf(k) = rayleigh_damping_factor * &
1749	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
1750	/ ( rayleigh_damping_height - zu(nzb+1)))&
1751	)**2
1752	ENDIF
1753	ENDDO
1754	ENDIF
1755	ENDIF
1756	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1757
1758	!
1759	!-- Initialize the starting level and the vertical smoothing factor used for
1760	!-- the external pressure gradient
1761	dp_smooth_factor = 1.0_wp
1762	IF ( dp_external ) THEN
1763	!
1764	!-- Set the starting level dp_level_ind_b only if it has not been set before
1765	!-- (e.g. in init_grid).
1766	IF ( dp_level_ind_b == 0 ) THEN
1767	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1768	dp_level_ind_b = ind_array(1) - 1 + nzb
1769	! MINLOC uses lower array bound 1
1770	ENDIF
1771	IF ( dp_smooth ) THEN
1772	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
1773	DO k = dp_level_ind_b+1, nzt
1774	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
1775	( REAL( k - dp_level_ind_b, KIND=wp ) / &
1776	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
1777	ENDDO
1778	ENDIF
1779	ENDIF
1780
1781	!
1782	!-- Initialize damping zone for the potential temperature in case of
1783	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1784	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1785	ptdf_x = 0.0_wp
1786	ptdf_y = 0.0_wp
1787	IF ( bc_lr_dirrad ) THEN
1788	DO i = nxl, nxr
1789	IF ( ( i * dx ) < pt_damping_width ) THEN
1790	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
1791	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
1792	REAL( pt_damping_width, KIND=wp ) ) ) )**2
1793	ENDIF
1794	ENDDO
1795	ELSEIF ( bc_lr_raddir ) THEN
1796	DO i = nxl, nxr
1797	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1798	ptdf_x(i) = pt_damping_factor * &
1799	SIN( pi * 0.5_wp * &
1800	( ( i - nx ) * dx + pt_damping_width ) / &
1801	REAL( pt_damping_width, KIND=wp ) )**2
1802	ENDIF
1803	ENDDO
1804	ELSEIF ( bc_ns_dirrad ) THEN
1805	DO j = nys, nyn
1806	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1807	ptdf_y(j) = pt_damping_factor * &
1808	SIN( pi * 0.5_wp * &
1809	( ( j - ny ) * dy + pt_damping_width ) / &
1810	REAL( pt_damping_width, KIND=wp ) )**2
1811	ENDIF
1812	ENDDO
1813	ELSEIF ( bc_ns_raddir ) THEN
1814	DO j = nys, nyn
1815	IF ( ( j * dy ) < pt_damping_width ) THEN
1816	ptdf_y(j) = pt_damping_factor * &
1817	SIN( pi * 0.5_wp * &
1818	( pt_damping_width - j * dy ) / &
1819	REAL( pt_damping_width, KIND=wp ) )**2
1820	ENDIF
1821	ENDDO
1822	ENDIF
1823
1824	!
1825	!-- Initialize local summation arrays for routine flow_statistics.
1826	!-- This is necessary because they may not yet have been initialized when they
1827	!-- are called from flow_statistics (or - depending on the chosen model run -
1828	!-- are never initialized)
1829	sums_divnew_l = 0.0_wp
1830	sums_divold_l = 0.0_wp
1831	sums_l_l = 0.0_wp
1832	sums_up_fraction_l = 0.0_wp
1833	sums_wsts_bc_l = 0.0_wp
1834
1835	!
1836	!-- Pre-set masks for regional statistics. Default is the total model domain.
1837	!-- Ghost points are excluded because counting values at the ghost boundaries
1838	!-- would bias the statistics
1839	rmask = 1.0_wp
1840	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
1841	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
1842
1843	!
1844	!-- User-defined initializing actions. Check afterwards, if maximum number
1845	!-- of allowed timeseries is exceeded
1846	CALL user_init
1847
1848	IF ( dots_num > dots_max ) THEN
1849	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1850	' its maximum of dots_max = ', dots_max, &
1851	' &Please increase dots_max in modules.f90.'
1852	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1853	ENDIF
1854
1855	!
1856	!-- Input binary data file is not needed anymore. This line must be placed
1857	!-- after call of user_init!
1858	CALL close_file( 13 )
1859
1860	!
1861	!-- Compute total sum of active mask grid points
1862	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1863	!-- total domain
1864	!-- ngp_3d: number of grid points of the total domain
1865	ngp_2dh_outer_l = 0
1866	ngp_2dh_outer = 0
1867	ngp_2dh_s_inner_l = 0
1868	ngp_2dh_s_inner = 0
1869	ngp_2dh_l = 0
1870	ngp_2dh = 0
1871	ngp_3d_inner_l = 0.0_wp
1872	ngp_3d_inner = 0
1873	ngp_3d = 0
1874	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1875
1876	DO sr = 0, statistic_regions
1877	DO i = nxl, nxr
1878	DO j = nys, nyn
1879	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
1880	!
1881	!-- All xy-grid points
1882	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1883	!
1884	!-- xy-grid points above topography
1885	DO k = nzb_s_outer(j,i), nz + 1
1886	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1887	ENDDO
1888	DO k = nzb_s_inner(j,i), nz + 1
1889	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1890	ENDDO
1891	!
1892	!-- All grid points of the total domain above topography
1893	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1894	( nz - nzb_s_inner(j,i) + 2 )
1895	ENDIF
1896	ENDDO
1897	ENDDO
1898	ENDDO
1899
1900	sr = statistic_regions + 1
1901	#if defined( __parallel )
1902	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1903	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1904	comm2d, ierr )
1905	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1906	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1907	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1908	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1909	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1910	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1911	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1912	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1913	MPI_SUM, comm2d, ierr )
1914	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1915	#else
1916	ngp_2dh = ngp_2dh_l
1917	ngp_2dh_outer = ngp_2dh_outer_l
1918	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1919	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1920	#endif
1921
1922	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1923	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1924
1925	!
1926	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1927	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1928	!-- the respective subdomain lie below the surface topography
1929	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1930	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1931	ngp_3d_inner(:) )
1932	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1933
1934	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1935
1936	CALL location_message( 'leaving init_3d_model', .TRUE. )
1937
1938	END SUBROUTINE init_3d_model

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