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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1429

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

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