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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1400

Last change on this file since 1400 was 1400, checked in by knoop, 10 years ago
Parallel random number generator added (preliminary version).
Property svn:keywords set to `Id`
File size: 66.3 KB

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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	! Parallel random number generator added
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: init_3d_model.f90 1400 2014-05-09 14:03:54Z knoop $
27	!
28	! 1384 2014-05-02 14:31:06Z raasch
29	! location messages added
30	!
31	! 1361 2014-04-16 15:17:48Z hoffmann
32	! tend_* removed
33	! Bugfix: w_subs is not allocated anymore if it is already allocated
34	!
35	! 1359 2014-04-11 17:15:14Z hoffmann
36	! module lpm_init_mod added to use statements, because lpm_init has become a
37	! module
38	!
39	! 1353 2014-04-08 15:21:23Z heinze
40	! REAL constants provided with KIND-attribute
41	!
42	! 1340 2014-03-25 19:45:13Z kanani
43	! REAL constants defined as wp-kind
44	!
45	! 1322 2014-03-20 16:38:49Z raasch
46	! REAL constants defined as wp-kind
47	! module interfaces removed
48	!
49	! 1320 2014-03-20 08:40:49Z raasch
50	! ONLY-attribute added to USE-statements,
51	! kind-parameters added to all INTEGER and REAL declaration statements,
52	! kinds are defined in new module kinds,
53	! revision history before 2012 removed,
54	! comment fields (!:) to be used for variable explanations added to
55	! all variable declaration statements
56	!
57	! 1316 2014-03-17 07:44:59Z heinze
58	! Bugfix: allocation of w_subs
59	!
60	! 1299 2014-03-06 13:15:21Z heinze
61	! Allocate w_subs due to extension of large scale subsidence in combination
62	! with large scale forcing data (LSF_DATA)
63	!
64	! 1241 2013-10-30 11:36:58Z heinze
65	! Overwrite initial profiles in case of nudging
66	! Inititialize shf and qsws in case of large_scale_forcing
67	!
68	! 1221 2013-09-10 08:59:13Z raasch
69	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
70	! copy
71	!
72	! 1212 2013-08-15 08:46:27Z raasch
73	! array tri is allocated and included in data copy statement
74	!
75	! 1195 2013-07-01 12:27:57Z heinze
76	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
77	!
78	! 1179 2013-06-14 05:57:58Z raasch
79	! allocate and set ref_state to be used in buoyancy terms
80	!
81	! 1171 2013-05-30 11:27:45Z raasch
82	! diss array is allocated with full size if accelerator boards are used
83	!
84	! 1159 2013-05-21 11:58:22Z fricke
85	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
86	!
87	! 1153 2013-05-10 14:33:08Z raasch
88	! diss array is allocated with dummy elements even if it is not needed
89	! (required by PGI 13.4 / CUDA 5.0)
90	!
91	! 1115 2013-03-26 18:16:16Z hoffmann
92	! unused variables removed
93	!
94	! 1113 2013-03-10 02:48:14Z raasch
95	! openACC directive modified
96	!
97	! 1111 2013-03-08 23:54:10Z raasch
98	! openACC directives added for pres
99	! array diss allocated only if required
100	!
101	! 1092 2013-02-02 11:24:22Z raasch
102	! unused variables removed
103	!
104	! 1065 2012-11-22 17:42:36Z hoffmann
105	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
106	!
107	! 1053 2012-11-13 17:11:03Z hoffmann
108	! allocation and initialisation of necessary data arrays for the two-moment
109	! cloud physics scheme the two new prognostic equations (nr, qr):
110	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
111	! +tend_*, prr
112	!
113	! 1036 2012-10-22 13:43:42Z raasch
114	! code put under GPL (PALM 3.9)
115	!
116	! 1032 2012-10-21 13:03:21Z letzel
117	! save memory by not allocating pt_2 in case of neutral = .T.
118	!
119	! 1025 2012-10-07 16:04:41Z letzel
120	! bugfix: swap indices of mask for ghost boundaries
121	!
122	! 1015 2012-09-27 09:23:24Z raasch
123	! mask is set to zero for ghost boundaries
124	!
125	! 1010 2012-09-20 07:59:54Z raasch
126	! cpp switch __nopointer added for pointer free version
127	!
128	! 1003 2012-09-14 14:35:53Z raasch
129	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
130	!
131	! 1001 2012-09-13 14:08:46Z raasch
132	! all actions concerning leapfrog scheme removed
133	!
134	! 996 2012-09-07 10:41:47Z raasch
135	! little reformatting
136	!
137	! 978 2012-08-09 08:28:32Z fricke
138	! outflow damping layer removed
139	! roughness length for scalar quantites z0h added
140	! damping zone for the potential temperatur in case of non-cyclic lateral
141	! boundaries added
142	! initialization of ptdf_x, ptdf_y
143	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
144	!
145	! 849 2012-03-15 10:35:09Z raasch
146	! init_particles renamed lpm_init
147	!
148	! 825 2012-02-19 03:03:44Z raasch
149	! wang_collision_kernel renamed wang_kernel
150	!
151	! Revision 1.1 1998/03/09 16:22:22 raasch
152	! Initial revision
153	!
154	!
155	! Description:
156	! ------------
157	! Allocation of arrays and initialization of the 3D model via
158	! a) pre-run the 1D model
159	! or
160	! b) pre-set constant linear profiles
161	! or
162	! c) read values of a previous run
163	!------------------------------------------------------------------------------!
164
165	USE advec_ws
166
167	USE arrays_3d
168
169	USE cloud_parameters, &
170	ONLY: nc_const, precipitation_amount, precipitation_rate, prr
171
172	USE constants, &
173	ONLY: pi
174
175	USE control_parameters
176
177	USE grid_variables, &
178	ONLY: dx, dy
179
180	USE indices
181
182	USE lpm_init_mod, &
183	ONLY: lpm_init
184
185	USE kinds
186
187	USE ls_forcing_mod
188
189	USE model_1d, &
190	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
191
192	USE netcdf_control
193
194	USE particle_attributes, &
195	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
196
197	USE pegrid
198
199	USE random_function_mod
200
201	USE random_generator_parallel, &
202	ONLY: random_number_parallel, random_seed_parallel, random_dummy, &
203	id_random_array, seq_random_array
204
205	USE statistics, &
206	ONLY: hom, hom_sum, pr_palm, rmask, spectrum_x, spectrum_y, &
207	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
208	sums_l_l, sums_up_fraction_l, sums_wsts_bc_l, ts_value, &
209	weight_pres, weight_substep
210
211	USE transpose_indices
212
213	IMPLICIT NONE
214
215	INTEGER(iwp) :: i !:
216	INTEGER(iwp) :: ind_array(1) !:
217	INTEGER(iwp) :: j !:
218	INTEGER(iwp) :: k !:
219	INTEGER(iwp) :: sr !:
220
221	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !:
222
223	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !:
224	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !:
225
226	REAL(wp), DIMENSION(1:2) :: volume_flow_area_l !:
227	REAL(wp), DIMENSION(1:2) :: volume_flow_initial_l !:
228
229	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !:
230	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !:
231
232
233	CALL location_message( 'allocating arrays' )
234	!
235	!-- Allocate arrays
236	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
237	ngp_3d(0:statistic_regions), &
238	ngp_3d_inner(0:statistic_regions), &
239	ngp_3d_inner_l(0:statistic_regions), &
240	ngp_3d_inner_tmp(0:statistic_regions), &
241	sums_divnew_l(0:statistic_regions), &
242	sums_divold_l(0:statistic_regions) )
243	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
244	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
245	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
246	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
247	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
248	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
249	sums(nzb:nzt+1,pr_palm+max_pr_user), &
250	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
251	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
252	sums_up_fraction_l(10,3,0:statistic_regions), &
253	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
254	ts_value(dots_max,0:statistic_regions) )
255	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
256
257	ALLOCATE( rif(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
258	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
259	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
260	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
261	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
262	z0h(nysg:nyng,nxlg:nxrg) )
263
264	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
265	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
266	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
267	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
268	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
269
270	#if defined( __nopointer )
271	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
272	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
273	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
274	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
275	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
276	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
277	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
278	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
279	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
280	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
281	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
282	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
283	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
284	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
285	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
286	#else
287	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
288	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
289	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
290	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
291	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
292	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
293	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
294	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
295	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
296	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
297	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
298	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
299	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
300	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
301	IF ( .NOT. neutral ) THEN
302	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
303	ENDIF
304	#endif
305
306	!
307	!-- Following array is required for perturbation pressure within the iterative
308	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
309	!-- the weighted average of the substeps and cannot be used in the Poisson
310	!-- solver.
311	IF ( psolver == 'sor' ) THEN
312	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
313	ELSEIF ( psolver == 'multigrid' ) THEN
314	!
315	!-- For performance reasons, multigrid is using one ghost layer only
316	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
317	ENDIF
318
319	!
320	!-- Array for storing constant coeffficients of the tridiagonal solver
321	IF ( psolver == 'poisfft' ) THEN
322	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
323	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
324	ENDIF
325
326	IF ( humidity .OR. passive_scalar ) THEN
327	!
328	!-- 2D-humidity/scalar arrays
329	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
330	qsws(nysg:nyng,nxlg:nxrg), &
331	qswst(nysg:nyng,nxlg:nxrg) )
332
333	!
334	!-- 3D-humidity/scalar arrays
335	#if defined( __nopointer )
336	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
337	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
338	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
339	#else
340	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
341	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
342	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
343	#endif
344
345	!
346	!-- 3D-arrays needed for humidity only
347	IF ( humidity ) THEN
348	#if defined( __nopointer )
349	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
350	#else
351	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
352	#endif
353
354	IF ( cloud_physics ) THEN
355
356	!
357	!-- Liquid water content
358	#if defined( __nopointer )
359	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
360	#else
361	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
362	#endif
363	!
364	!-- Precipitation amount and rate (only needed if output is switched)
365	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
366	precipitation_rate(nysg:nyng,nxlg:nxrg) )
367
368	IF ( icloud_scheme == 0 ) THEN
369	!
370	!-- 1D-arrays
371	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
372	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
373	!
374	!-- 3D-cloud water content
375	#if defined( __nopointer )
376	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
377	#else
378	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
379	#endif
380
381	IF ( precipitation ) THEN
382	!
383	!-- 1D-arrays
384	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
385
386	!
387	!-- 2D-rain water content and rain drop concentration arrays
388	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
389	qrsws(nysg:nyng,nxlg:nxrg), &
390	qrswst(nysg:nyng,nxlg:nxrg), &
391	nrs(nysg:nyng,nxlg:nxrg), &
392	nrsws(nysg:nyng,nxlg:nxrg), &
393	nrswst(nysg:nyng,nxlg:nxrg) )
394	!
395	!-- 3D-rain water content, rain drop concentration arrays
396	#if defined( __nopointer )
397	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
398	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
399	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
400	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
401	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
402	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
403	#else
404	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
405	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
406	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
407	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
408	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
409	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
410	#endif
411	!
412	!-- 3d-precipitation rate
413	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
414	ENDIF
415
416	ENDIF
417	ENDIF
418
419	IF ( cloud_droplets ) THEN
420	!
421	!-- Liquid water content, change in liquid water content
422	#if defined( __nopointer )
423	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
424	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
425	#else
426	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
427	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
428	#endif
429	!
430	!-- Real volume of particles (with weighting), volume of particles
431	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
432	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
433	ENDIF
434
435	ENDIF
436
437	ENDIF
438
439	IF ( ocean ) THEN
440	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
441	saswst(nysg:nyng,nxlg:nxrg) )
442	#if defined( __nopointer )
443	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
444	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
445	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
446	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
447	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
448	#else
449	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
450	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
451	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
452	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
453	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
454	prho => prho_1
455	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
456	! density to be apointer
457	#endif
458	IF ( humidity_remote ) THEN
459	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
460	qswst_remote = 0.0_wp
461	ENDIF
462	ENDIF
463
464	!
465	!-- 3D-array for storing the dissipation, needed for calculating the sgs
466	!-- particle velocities
467	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence .OR. &
468	num_acc_per_node > 0 ) THEN
469	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
470	ENDIF
471
472	IF ( dt_dosp /= 9999999.9_wp ) THEN
473	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
474	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
475	spectrum_x = 0.0_wp
476	spectrum_y = 0.0_wp
477	ENDIF
478
479	!
480	!-- 1D-array for large scale subsidence velocity
481	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
482	ALLOCATE ( w_subs(nzb:nzt+1) )
483	w_subs = 0.0_wp
484	ENDIF
485
486	!
487	!-- ID-array and state-space-array for the parallel random number generator
488	IF ( random_generator == 'random-parallel' ) THEN
489	ALLOCATE ( seq_random_array(5,nysg:nyng,nxlg:nxrg) )
490	ALLOCATE ( id_random_array(0:ny,0:nx) )
491	seq_random_array = 0
492	id_random_array = 0
493	ENDIF
494
495	!
496	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
497	IF ( plant_canopy ) THEN
498	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
499	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
500	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
501	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
502	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
503
504	IF ( passive_scalar ) THEN
505	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
506	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
507	ENDIF
508
509	IF ( cthf /= 0.0_wp ) THEN
510	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
511	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
512	ENDIF
513
514	ENDIF
515
516	!
517	!-- 4D-array for storing the Rif-values at vertical walls
518	IF ( topography /= 'flat' ) THEN
519	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
520	rif_wall = 0.0_wp
521	ENDIF
522
523	!
524	!-- Arrays to store velocity data from t-dt and the phase speeds which
525	!-- are needed for radiation boundary conditions
526	IF ( outflow_l ) THEN
527	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
528	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
529	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
530	ENDIF
531	IF ( outflow_r ) THEN
532	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
533	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
534	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
535	ENDIF
536	IF ( outflow_l .OR. outflow_r ) THEN
537	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
538	c_w(nzb:nzt+1,nysg:nyng) )
539	ENDIF
540	IF ( outflow_s ) THEN
541	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
542	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
543	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
544	ENDIF
545	IF ( outflow_n ) THEN
546	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
547	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
548	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
549	ENDIF
550	IF ( outflow_s .OR. outflow_n ) THEN
551	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
552	c_w(nzb:nzt+1,nxlg:nxrg) )
553	ENDIF
554	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
555	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
556	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
557	ENDIF
558
559
560	#if ! defined( __nopointer )
561	!
562	!-- Initial assignment of the pointers
563	e => e_1; e_p => e_2; te_m => e_3
564	IF ( .NOT. neutral ) THEN
565	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
566	ELSE
567	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
568	ENDIF
569	u => u_1; u_p => u_2; tu_m => u_3
570	v => v_1; v_p => v_2; tv_m => v_3
571	w => w_1; w_p => w_2; tw_m => w_3
572
573	IF ( humidity .OR. passive_scalar ) THEN
574	q => q_1; q_p => q_2; tq_m => q_3
575	IF ( humidity ) THEN
576	vpt => vpt_1
577	IF ( cloud_physics ) THEN
578	ql => ql_1
579	IF ( icloud_scheme == 0 ) THEN
580	qc => qc_1
581	IF ( precipitation ) THEN
582	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
583	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
584	ENDIF
585	ENDIF
586	ENDIF
587	ENDIF
588	IF ( cloud_droplets ) THEN
589	ql => ql_1
590	ql_c => ql_2
591	ENDIF
592	ENDIF
593
594	IF ( ocean ) THEN
595	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
596	ENDIF
597	#endif
598
599	!
600	!-- Allocate arrays containing the RK coefficient for calculation of
601	!-- perturbation pressure and turbulent fluxes. At this point values are
602	!-- set for pressure calculation during initialization (where no timestep
603	!-- is done). Further below the values needed within the timestep scheme
604	!-- will be set.
605	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
606	weight_pres(1:intermediate_timestep_count_max) )
607	weight_substep = 1.0_wp
608	weight_pres = 1.0_wp
609	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
610
611	CALL location_message( 'finished' )
612	!
613	!-- Initialize model variables
614	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
615	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
616	!
617	!-- First model run of a possible job queue.
618	!-- Initial profiles of the variables must be computes.
619	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
620
621	CALL location_message( 'initializing with 1D model profiles' )
622	!
623	!-- Use solutions of the 1D model as initial profiles,
624	!-- start 1D model
625	CALL init_1d_model
626	!
627	!-- Transfer initial profiles to the arrays of the 3D model
628	DO i = nxlg, nxrg
629	DO j = nysg, nyng
630	e(:,j,i) = e1d
631	kh(:,j,i) = kh1d
632	km(:,j,i) = km1d
633	pt(:,j,i) = pt_init
634	u(:,j,i) = u1d
635	v(:,j,i) = v1d
636	ENDDO
637	ENDDO
638
639	IF ( humidity .OR. passive_scalar ) THEN
640	DO i = nxlg, nxrg
641	DO j = nysg, nyng
642	q(:,j,i) = q_init
643	ENDDO
644	ENDDO
645	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
646	precipitation ) THEN
647	DO i = nxlg, nxrg
648	DO j = nysg, nyng
649	qr(:,j,i) = 0.0_wp
650	nr(:,j,i) = 0.0_wp
651	ENDDO
652	ENDDO
653	!
654	!-- Initialze nc_1d with default value
655	nc_1d(:) = nc_const
656
657	ENDIF
658	ENDIF
659
660	IF ( .NOT. constant_diffusion ) THEN
661	DO i = nxlg, nxrg
662	DO j = nysg, nyng
663	e(:,j,i) = e1d
664	ENDDO
665	ENDDO
666	!
667	!-- Store initial profiles for output purposes etc.
668	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
669
670	IF ( prandtl_layer ) THEN
671	rif = rif1d(nzb+1)
672	ts = 0.0_wp ! could actually be computed more accurately in the
673	! 1D model. Update when opportunity arises.
674	us = us1d
675	usws = usws1d
676	vsws = vsws1d
677	ELSE
678	ts = 0.0_wp ! must be set, because used in
679	rif = 0.0_wp ! flowste
680	us = 0.0_wp
681	usws = 0.0_wp
682	vsws = 0.0_wp
683	ENDIF
684
685	ELSE
686	e = 0.0_wp ! must be set, because used in
687	rif = 0.0_wp ! flowste
688	ts = 0.0_wp
689	us = 0.0_wp
690	usws = 0.0_wp
691	vsws = 0.0_wp
692	ENDIF
693	uswst = top_momentumflux_u
694	vswst = top_momentumflux_v
695
696	!
697	!-- In every case qs = 0.0 (see also pt)
698	!-- This could actually be computed more accurately in the 1D model.
699	!-- Update when opportunity arises!
700	IF ( humidity .OR. passive_scalar ) THEN
701	qs = 0.0_wp
702	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
703	precipitation ) THEN
704	qrs = 0.0_wp
705	nrs = 0.0_wp
706	ENDIF
707	ENDIF
708
709	!
710	!-- inside buildings set velocities back to zero
711	IF ( topography /= 'flat' ) THEN
712	DO i = nxl-1, nxr+1
713	DO j = nys-1, nyn+1
714	u(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
715	v(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
716	ENDDO
717	ENDDO
718
719	!
720	!-- WARNING: The extra boundary conditions set after running the
721	!-- ------- 1D model impose an error on the divergence one layer
722	!-- below the topography; need to correct later
723	!-- ATTENTION: Provisional correction for Piacsek & Williams
724	!-- --------- advection scheme: keep u and v zero one layer below
725	!-- the topography.
726	IF ( ibc_uv_b == 1 ) THEN
727	!
728	!-- Neumann condition
729	DO i = nxl-1, nxr+1
730	DO j = nys-1, nyn+1
731	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
732	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
733	ENDDO
734	ENDDO
735
736	ENDIF
737
738	ENDIF
739
740	CALL location_message( 'finished' )
741
742	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
743	THEN
744
745	CALL location_message( 'initializing with constant profiles' )
746	!
747	!-- Overwrite initial profiles in case of nudging
748	IF ( nudging ) THEN
749	pt_init = ptnudge(:,1)
750	u_init = unudge(:,1)
751	v_init = vnudge(:,1)
752	IF ( humidity .OR. passive_scalar ) THEN
753	q_init = qnudge(:,1)
754	ENDIF
755
756	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
757	'scalars from NUDGING_DATA are used.'
758	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
759	ENDIF
760
761	!
762	!-- Use constructed initial profiles (velocity constant with height,
763	!-- temperature profile with constant gradient)
764	DO i = nxlg, nxrg
765	DO j = nysg, nyng
766	pt(:,j,i) = pt_init
767	u(:,j,i) = u_init
768	v(:,j,i) = v_init
769	ENDDO
770	ENDDO
771
772	!
773	!-- Set initial horizontal velocities at the lowest computational grid
774	!-- levels to zero in order to avoid too small time steps caused by the
775	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
776	!-- in the limiting formula!). The original values are stored to be later
777	!-- used for volume flow control.
778	DO i = nxlg, nxrg
779	DO j = nysg, nyng
780	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0_wp
781	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0_wp
782	ENDDO
783	ENDDO
784
785	IF ( humidity .OR. passive_scalar ) THEN
786	DO i = nxlg, nxrg
787	DO j = nysg, nyng
788	q(:,j,i) = q_init
789	ENDDO
790	ENDDO
791	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
792	!
793	!-- Initialze nc_1d with default value
794	nc_1d(:) = nc_const
795
796	IF ( precipitation ) THEN
797	DO i = nxlg, nxrg
798	DO j = nysg, nyng
799	qr(:,j,i) = 0.0_wp
800	nr(:,j,i) = 0.0_wp
801	ENDDO
802	ENDDO
803	ENDIF
804
805	ENDIF
806	ENDIF
807
808	IF ( ocean ) THEN
809	DO i = nxlg, nxrg
810	DO j = nysg, nyng
811	sa(:,j,i) = sa_init
812	ENDDO
813	ENDDO
814	ENDIF
815
816	IF ( constant_diffusion ) THEN
817	km = km_constant
818	kh = km / prandtl_number
819	e = 0.0_wp
820	ELSEIF ( e_init > 0.0_wp ) THEN
821	DO k = nzb+1, nzt
822	km(k,:,:) = 0.1_wp * l_grid(k) * SQRT( e_init )
823	ENDDO
824	km(nzb,:,:) = km(nzb+1,:,:)
825	km(nzt+1,:,:) = km(nzt,:,:)
826	kh = km / prandtl_number
827	e = e_init
828	ELSE
829	IF ( .NOT. ocean ) THEN
830	kh = 0.01_wp ! there must exist an initial diffusion, because
831	km = 0.01_wp ! otherwise no TKE would be produced by the
832	! production terms, as long as not yet
833	! e = (u/cm)*2 at k=nzb+1
834	ELSE
835	kh = 0.00001_wp
836	km = 0.00001_wp
837	ENDIF
838	e = 0.0_wp
839	ENDIF
840	rif = 0.0_wp
841	ts = 0.0_wp
842	us = 0.0_wp
843	usws = 0.0_wp
844	uswst = top_momentumflux_u
845	vsws = 0.0_wp
846	vswst = top_momentumflux_v
847	IF ( humidity .OR. passive_scalar ) qs = 0.0_wp
848
849	!
850	!-- Compute initial temperature field and other constants used in case
851	!-- of a sloping surface
852	IF ( sloping_surface ) CALL init_slope
853
854	CALL location_message( 'finished' )
855
856	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
857	THEN
858
859	CALL location_message( 'initializing by user' )
860	!
861	!-- Initialization will completely be done by the user
862	CALL user_init_3d_model
863
864	CALL location_message( 'finished' )
865
866	ENDIF
867
868	CALL location_message( 'initializing statistics, boundary conditions, etc.' )
869
870	!
871	!-- Bottom boundary
872	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
873	u(nzb,:,:) = 0.0_wp
874	v(nzb,:,:) = 0.0_wp
875	ENDIF
876
877	!
878	!-- Apply channel flow boundary condition
879	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
880	u(nzt+1,:,:) = 0.0_wp
881	v(nzt+1,:,:) = 0.0_wp
882	ENDIF
883
884	!
885	!-- Calculate virtual potential temperature
886	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
887
888	!
889	!-- Store initial profiles for output purposes etc.
890	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
891	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
892	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
893	hom(nzb,1,5,:) = 0.0_wp
894	hom(nzb,1,6,:) = 0.0_wp
895	ENDIF
896	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
897	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
898	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
899
900	IF ( ocean ) THEN
901	!
902	!-- Store initial salinity profile
903	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
904	ENDIF
905
906	IF ( humidity ) THEN
907	!
908	!-- Store initial profile of total water content, virtual potential
909	!-- temperature
910	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
911	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
912	IF ( cloud_physics .OR. cloud_droplets ) THEN
913	!
914	!-- Store initial profile of specific humidity and potential
915	!-- temperature
916	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
917	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
918	ENDIF
919	ENDIF
920
921	IF ( passive_scalar ) THEN
922	!
923	!-- Store initial scalar profile
924	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
925	ENDIF
926
927	!
928	!-- Initialize the random number generators (from numerical recipes)
929	CALL random_function_ini
930	IF ( random_generator == 'random-parallel' ) THEN
931	CALL random_function_ini
932	!- asigning an ID to every vertical gridpoint column
933	DO j=0,ny
934	DO i=0,nx
935	id_random_array(j,i) = 1000000*i + j
936	END DO
937	ENDDO
938	!- executing the initial ran_parallel
939	DO j = nysg, nyng
940	DO i = nxlg, nxrg
941	CALL random_seed_parallel (random_sequence=id_random_array(j, i))
942	CALL random_number_parallel (random_dummy)
943	CALL random_seed_parallel (get=seq_random_array(:, j, i))
944	END DO
945	ENDDO
946	ENDIF
947
948	!
949	!-- Initialize fluxes at bottom surface
950	IF ( use_surface_fluxes ) THEN
951
952	IF ( constant_heatflux ) THEN
953	!
954	!-- Heat flux is prescribed
955	IF ( random_heatflux ) THEN
956	CALL disturb_heatflux
957	ELSE
958	shf = surface_heatflux
959	!
960	!-- Initialize shf with data from external file LSF_DATA
961	IF ( large_scale_forcing .AND. lsf_surf ) THEN
962	CALL ls_forcing_surf ( simulated_time )
963	ENDIF
964
965	!
966	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
967	IF ( TRIM( topography ) /= 'flat' ) THEN
968	DO i = nxlg, nxrg
969	DO j = nysg, nyng
970	IF ( nzb_s_inner(j,i) /= 0 ) THEN
971	shf(j,i) = wall_heatflux(0)
972	ENDIF
973	ENDDO
974	ENDDO
975	ENDIF
976	ENDIF
977	ENDIF
978
979	!
980	!-- Determine the near-surface water flux
981	IF ( humidity .OR. passive_scalar ) THEN
982	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
983	precipitation ) THEN
984	qrsws = 0.0_wp
985	nrsws = 0.0_wp
986	ENDIF
987	IF ( constant_waterflux ) THEN
988	qsws = surface_waterflux
989	!
990	!-- Over topography surface_waterflux is replaced by
991	!-- wall_humidityflux(0)
992	IF ( TRIM( topography ) /= 'flat' ) THEN
993	wall_qflux = wall_humidityflux
994	DO i = nxlg, nxrg
995	DO j = nysg, nyng
996	IF ( nzb_s_inner(j,i) /= 0 ) THEN
997	qsws(j,i) = wall_qflux(0)
998	ENDIF
999	ENDDO
1000	ENDDO
1001	ENDIF
1002	ENDIF
1003	ENDIF
1004
1005	ENDIF
1006
1007	!
1008	!-- Initialize fluxes at top surface
1009	!-- Currently, only the heatflux and salinity flux can be prescribed.
1010	!-- The latent flux is zero in this case!
1011	IF ( use_top_fluxes ) THEN
1012
1013	IF ( constant_top_heatflux ) THEN
1014	!
1015	!-- Heat flux is prescribed
1016	tswst = top_heatflux
1017
1018	IF ( humidity .OR. passive_scalar ) THEN
1019	qswst = 0.0_wp
1020	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1021	precipitation ) THEN
1022	nrswst = 0.0_wp
1023	qrswst = 0.0_wp
1024	ENDIF
1025	ENDIF
1026
1027	IF ( ocean ) THEN
1028	saswsb = bottom_salinityflux
1029	saswst = top_salinityflux
1030	ENDIF
1031	ENDIF
1032
1033	!
1034	!-- Initialization in case of a coupled model run
1035	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1036	tswst = 0.0_wp
1037	ENDIF
1038
1039	ENDIF
1040
1041	!
1042	!-- Initialize Prandtl layer quantities
1043	IF ( prandtl_layer ) THEN
1044
1045	z0 = roughness_length
1046	z0h = z0h_factor * z0
1047
1048	IF ( .NOT. constant_heatflux ) THEN
1049	!
1050	!-- Surface temperature is prescribed. Here the heat flux cannot be
1051	!-- simply estimated, because therefore rif, u* and theta* would have
1052	!-- to be computed by iteration. This is why the heat flux is assumed
1053	!-- to be zero before the first time step. It approaches its correct
1054	!-- value in the course of the first few time steps.
1055	shf = 0.0_wp
1056	ENDIF
1057
1058	IF ( humidity .OR. passive_scalar ) THEN
1059	IF ( .NOT. constant_waterflux ) qsws = 0.0_wp
1060	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1061	precipitation ) THEN
1062	qrsws = 0.0_wp
1063	nrsws = 0.0_wp
1064	ENDIF
1065	ENDIF
1066
1067	ENDIF
1068
1069	!
1070	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1071	!-- the reference state will be set (overwritten) in init_ocean)
1072	IF ( use_single_reference_value ) THEN
1073	IF ( .NOT. humidity ) THEN
1074	ref_state(:) = pt_reference
1075	ELSE
1076	ref_state(:) = vpt_reference
1077	ENDIF
1078	ELSE
1079	IF ( .NOT. humidity ) THEN
1080	ref_state(:) = pt_init(:)
1081	ELSE
1082	ref_state(:) = vpt(:,nys,nxl)
1083	ENDIF
1084	ENDIF
1085
1086	!
1087	!-- For the moment, vertical velocity is zero
1088	w = 0.0_wp
1089
1090	!
1091	!-- Initialize array sums (must be defined in first call of pres)
1092	sums = 0.0_wp
1093
1094	!
1095	!-- In case of iterative solvers, p must get an initial value
1096	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
1097
1098	!
1099	!-- Treating cloud physics, liquid water content and precipitation amount
1100	!-- are zero at beginning of the simulation
1101	IF ( cloud_physics ) THEN
1102	ql = 0.0_wp
1103	IF ( precipitation ) precipitation_amount = 0.0_wp
1104	IF ( icloud_scheme == 0 ) THEN
1105	qc = 0.0_wp
1106	nc_1d = nc_const
1107	ENDIF
1108	ENDIF
1109	!
1110	!-- Impose vortex with vertical axis on the initial velocity profile
1111	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1112	CALL init_rankine
1113	ENDIF
1114
1115	!
1116	!-- Impose temperature anomaly (advection test only)
1117	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1118	CALL init_pt_anomaly
1119	ENDIF
1120
1121	!
1122	!-- If required, change the surface temperature at the start of the 3D run
1123	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
1124	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1125	ENDIF
1126
1127	!
1128	!-- If required, change the surface humidity/scalar at the start of the 3D
1129	!-- run
1130	IF ( ( humidity .OR. passive_scalar ) .AND. &
1131	q_surface_initial_change /= 0.0_wp ) THEN
1132	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1133	ENDIF
1134
1135	!
1136	!-- Initialize old and new time levels.
1137	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
1138	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1139
1140	IF ( humidity .OR. passive_scalar ) THEN
1141	tq_m = 0.0_wp
1142	q_p = q
1143	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1144	precipitation ) THEN
1145	tqr_m = 0.0_wp
1146	qr_p = qr
1147	tnr_m = 0.0_wp
1148	nr_p = nr
1149	ENDIF
1150	ENDIF
1151
1152	IF ( ocean ) THEN
1153	tsa_m = 0.0_wp
1154	sa_p = sa
1155	ENDIF
1156
1157	CALL location_message( 'finished' )
1158
1159	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1160	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1161	THEN
1162
1163	CALL location_message( 'initializing in case of restart / cyclic_fill' )
1164	!
1165	!-- When reading data for cyclic fill of 3D prerun data files, read
1166	!-- some of the global variables from the restart file which are required
1167	!-- for initializing the inflow
1168	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1169
1170	DO i = 0, io_blocks-1
1171	IF ( i == io_group ) THEN
1172	CALL read_parts_of_var_list
1173	CALL close_file( 13 )
1174	ENDIF
1175	#if defined( __parallel )
1176	CALL MPI_BARRIER( comm2d, ierr )
1177	#endif
1178	ENDDO
1179
1180	ENDIF
1181
1182	!
1183	!-- Read binary data from restart file
1184	DO i = 0, io_blocks-1
1185	IF ( i == io_group ) THEN
1186	CALL read_3d_binary
1187	ENDIF
1188	#if defined( __parallel )
1189	CALL MPI_BARRIER( comm2d, ierr )
1190	#endif
1191	ENDDO
1192
1193	!
1194	!-- Initialization of the turbulence recycling method
1195	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1196	turbulent_inflow ) THEN
1197	!
1198	!-- First store the profiles to be used at the inflow.
1199	!-- These profiles are the (temporally) and horizontally averaged vertical
1200	!-- profiles from the prerun. Alternatively, prescribed profiles
1201	!-- for u,v-components can be used.
1202	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
1203
1204	IF ( use_prescribed_profile_data ) THEN
1205	mean_inflow_profiles(:,1) = u_init ! u
1206	mean_inflow_profiles(:,2) = v_init ! v
1207	ELSE
1208	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1209	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1210	ENDIF
1211	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1212	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1213
1214	!
1215	!-- If necessary, adjust the horizontal flow field to the prescribed
1216	!-- profiles
1217	IF ( use_prescribed_profile_data ) THEN
1218	DO i = nxlg, nxrg
1219	DO j = nysg, nyng
1220	DO k = nzb, nzt+1
1221	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1222	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1223	ENDDO
1224	ENDDO
1225	ENDDO
1226	ENDIF
1227
1228	!
1229	!-- Use these mean profiles at the inflow (provided that Dirichlet
1230	!-- conditions are used)
1231	IF ( inflow_l ) THEN
1232	DO j = nysg, nyng
1233	DO k = nzb, nzt+1
1234	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1235	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1236	w(k,j,nxlg:-1) = 0.0_wp
1237	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1238	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1239	ENDDO
1240	ENDDO
1241	ENDIF
1242
1243	!
1244	!-- Calculate the damping factors to be used at the inflow. For a
1245	!-- turbulent inflow the turbulent fluctuations have to be limited
1246	!-- vertically because otherwise the turbulent inflow layer will grow
1247	!-- in time.
1248	IF ( inflow_damping_height == 9999999.9_wp ) THEN
1249	!
1250	!-- Default: use the inversion height calculated by the prerun; if
1251	!-- this is zero, inflow_damping_height must be explicitly
1252	!-- specified.
1253	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
1254	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1255	ELSE
1256	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1257	'explicitly specified because&the inversion height ', &
1258	'calculated by the prerun is zero.'
1259	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1260	ENDIF
1261
1262	ENDIF
1263
1264	IF ( inflow_damping_width == 9999999.9_wp ) THEN
1265	!
1266	!-- Default for the transition range: one tenth of the undamped
1267	!-- layer
1268	inflow_damping_width = 0.1_wp * inflow_damping_height
1269
1270	ENDIF
1271
1272	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1273
1274	DO k = nzb, nzt+1
1275
1276	IF ( zu(k) <= inflow_damping_height ) THEN
1277	inflow_damping_factor(k) = 1.0_wp
1278	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1279	inflow_damping_factor(k) = 1.0_wp - &
1280	( zu(k) - inflow_damping_height ) / &
1281	inflow_damping_width
1282	ELSE
1283	inflow_damping_factor(k) = 0.0_wp
1284	ENDIF
1285
1286	ENDDO
1287
1288	ENDIF
1289
1290	!
1291	!-- Inside buildings set velocities and TKE back to zero
1292	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1293	topography /= 'flat' ) THEN
1294	!
1295	!-- Inside buildings set velocities and TKE back to zero.
1296	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1297	!-- maybe revise later.
1298	DO i = nxlg, nxrg
1299	DO j = nysg, nyng
1300	u (nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1301	v (nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1302	w (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1303	e (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1304	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1305	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1306	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1307	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1308	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1309	ENDDO
1310	ENDDO
1311
1312	ENDIF
1313
1314	!
1315	!-- Calculate initial temperature field and other constants used in case
1316	!-- of a sloping surface
1317	IF ( sloping_surface ) CALL init_slope
1318
1319	!
1320	!-- Initialize new time levels (only done in order to set boundary values
1321	!-- including ghost points)
1322	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1323	IF ( humidity .OR. passive_scalar ) THEN
1324	q_p = q
1325	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1326	precipitation ) THEN
1327	qr_p = qr
1328	nr_p = nr
1329	ENDIF
1330	ENDIF
1331	IF ( ocean ) sa_p = sa
1332
1333	!
1334	!-- Allthough tendency arrays are set in prognostic_equations, they have
1335	!-- have to be predefined here because they are used (but multiplied with 0)
1336	!-- there before they are set.
1337	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
1338	IF ( humidity .OR. passive_scalar ) THEN
1339	tq_m = 0.0_wp
1340	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1341	precipitation ) THEN
1342	tqr_m = 0.0_wp
1343	tnr_m = 0.0_wp
1344	ENDIF
1345	ENDIF
1346	IF ( ocean ) tsa_m = 0.0_wp
1347
1348	CALL location_message( 'finished' )
1349
1350	ELSE
1351	!
1352	!-- Actually this part of the programm should not be reached
1353	message_string = 'unknown initializing problem'
1354	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1355	ENDIF
1356
1357
1358	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1359	!
1360	!-- Initialize old timelevels needed for radiation boundary conditions
1361	IF ( outflow_l ) THEN
1362	u_m_l(:,:,:) = u(:,:,1:2)
1363	v_m_l(:,:,:) = v(:,:,0:1)
1364	w_m_l(:,:,:) = w(:,:,0:1)
1365	ENDIF
1366	IF ( outflow_r ) THEN
1367	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1368	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1369	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1370	ENDIF
1371	IF ( outflow_s ) THEN
1372	u_m_s(:,:,:) = u(:,0:1,:)
1373	v_m_s(:,:,:) = v(:,1:2,:)
1374	w_m_s(:,:,:) = w(:,0:1,:)
1375	ENDIF
1376	IF ( outflow_n ) THEN
1377	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1378	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1379	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1380	ENDIF
1381
1382	ENDIF
1383
1384	!
1385	!-- Calculate the initial volume flow at the right and north boundary
1386	IF ( conserve_volume_flow ) THEN
1387
1388	IF ( use_prescribed_profile_data ) THEN
1389
1390	volume_flow_initial_l = 0.0_wp
1391	volume_flow_area_l = 0.0_wp
1392
1393	IF ( nxr == nx ) THEN
1394	DO j = nys, nyn
1395	DO k = nzb_2d(j,nx)+1, nzt
1396	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1397	u_init(k) * dzw(k)
1398	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1399	ENDDO
1400	ENDDO
1401	ENDIF
1402
1403	IF ( nyn == ny ) THEN
1404	DO i = nxl, nxr
1405	DO k = nzb_2d(ny,i)+1, nzt
1406	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1407	v_init(k) * dzw(k)
1408	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1409	ENDDO
1410	ENDDO
1411	ENDIF
1412
1413	#if defined( __parallel )
1414	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1415	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1416	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1417	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1418
1419	#else
1420	volume_flow_initial = volume_flow_initial_l
1421	volume_flow_area = volume_flow_area_l
1422	#endif
1423
1424	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1425
1426	volume_flow_initial_l = 0.0_wp
1427	volume_flow_area_l = 0.0_wp
1428
1429	IF ( nxr == nx ) THEN
1430	DO j = nys, nyn
1431	DO k = nzb_2d(j,nx)+1, nzt
1432	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1433	hom_sum(k,1,0) * dzw(k)
1434	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1435	ENDDO
1436	ENDDO
1437	ENDIF
1438
1439	IF ( nyn == ny ) THEN
1440	DO i = nxl, nxr
1441	DO k = nzb_2d(ny,i)+1, nzt
1442	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1443	hom_sum(k,2,0) * dzw(k)
1444	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1445	ENDDO
1446	ENDDO
1447	ENDIF
1448
1449	#if defined( __parallel )
1450	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1451	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1452	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1453	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1454
1455	#else
1456	volume_flow_initial = volume_flow_initial_l
1457	volume_flow_area = volume_flow_area_l
1458	#endif
1459
1460	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1461
1462	volume_flow_initial_l = 0.0_wp
1463	volume_flow_area_l = 0.0_wp
1464
1465	IF ( nxr == nx ) THEN
1466	DO j = nys, nyn
1467	DO k = nzb_2d(j,nx)+1, nzt
1468	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1469	u(k,j,nx) * dzw(k)
1470	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1471	ENDDO
1472	ENDDO
1473	ENDIF
1474
1475	IF ( nyn == ny ) THEN
1476	DO i = nxl, nxr
1477	DO k = nzb_2d(ny,i)+1, nzt
1478	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1479	v(k,ny,i) * dzw(k)
1480	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1481	ENDDO
1482	ENDDO
1483	ENDIF
1484
1485	#if defined( __parallel )
1486	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1487	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1488	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1489	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1490
1491	#else
1492	volume_flow_initial = volume_flow_initial_l
1493	volume_flow_area = volume_flow_area_l
1494	#endif
1495
1496	ENDIF
1497
1498	!
1499	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1500	!-- from u\|v_bulk instead
1501	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1502	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1503	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1504	ENDIF
1505
1506	ENDIF
1507
1508	!
1509	!-- Initialize quantities for special advections schemes
1510	CALL init_advec
1511
1512	!
1513	!-- Impose random perturbation on the horizontal velocity field and then
1514	!-- remove the divergences from the velocity field at the initial stage
1515	IF ( create_disturbances .AND. &
1516	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1517	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1518
1519	CALL location_message( 'creating initial disturbances' )
1520	CALL disturb_field( nzb_u_inner, tend, u )
1521	CALL disturb_field( nzb_v_inner, tend, v )
1522	CALL location_message( 'finished' )
1523
1524	CALL location_message( 'calling pressure solver' )
1525	n_sor = nsor_ini
1526	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1527	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1528	!$acc copyin( weight_pres, weight_substep ) &
1529	!$acc copy( tri, tric, u, v, w )
1530	CALL pres
1531	!$acc end data
1532	n_sor = nsor
1533	CALL location_message( 'finished' )
1534
1535	ENDIF
1536
1537	!
1538	!-- Initialization of the leaf area density
1539	IF ( plant_canopy ) THEN
1540
1541	SELECT CASE ( TRIM( canopy_mode ) )
1542
1543	CASE( 'block' )
1544
1545	DO i = nxlg, nxrg
1546	DO j = nysg, nyng
1547	lad_s(:,j,i) = lad(:)
1548	cdc(:,j,i) = drag_coefficient
1549	IF ( passive_scalar ) THEN
1550	sls(:,j,i) = leaf_surface_concentration
1551	sec(:,j,i) = scalar_exchange_coefficient
1552	ENDIF
1553	ENDDO
1554	ENDDO
1555
1556	CASE DEFAULT
1557
1558	!
1559	!-- The DEFAULT case is reached either if the parameter
1560	!-- canopy mode contains a wrong character string or if the
1561	!-- user has coded a special case in the user interface.
1562	!-- There, the subroutine user_init_plant_canopy checks
1563	!-- which of these two conditions applies.
1564	CALL user_init_plant_canopy
1565
1566	END SELECT
1567
1568	CALL exchange_horiz( lad_s, nbgp )
1569	CALL exchange_horiz( cdc, nbgp )
1570
1571	IF ( passive_scalar ) THEN
1572	CALL exchange_horiz( sls, nbgp )
1573	CALL exchange_horiz( sec, nbgp )
1574	ENDIF
1575
1576	!
1577	!-- Sharp boundaries of the plant canopy in horizontal directions
1578	!-- In vertical direction the interpolation is retained, as the leaf
1579	!-- area density is initialised by prescribing a vertical profile
1580	!-- consisting of piecewise linear segments. The upper boundary
1581	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1582
1583	DO i = nxl, nxr
1584	DO j = nys, nyn
1585	DO k = nzb, nzt+1
1586	IF ( lad_s(k,j,i) > 0.0_wp ) THEN
1587	lad_u(k,j,i) = lad_s(k,j,i)
1588	lad_u(k,j,i+1) = lad_s(k,j,i)
1589	lad_v(k,j,i) = lad_s(k,j,i)
1590	lad_v(k,j+1,i) = lad_s(k,j,i)
1591	ENDIF
1592	ENDDO
1593	DO k = nzb, nzt
1594	lad_w(k,j,i) = 0.5_wp * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1595	ENDDO
1596	ENDDO
1597	ENDDO
1598
1599	lad_w(pch_index,:,:) = 0.0_wp
1600	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1601
1602	CALL exchange_horiz( lad_u, nbgp )
1603	CALL exchange_horiz( lad_v, nbgp )
1604	CALL exchange_horiz( lad_w, nbgp )
1605
1606	!
1607	!-- Initialisation of the canopy heat source distribution
1608	IF ( cthf /= 0.0_wp ) THEN
1609	!
1610	!-- Piecewise evaluation of the leaf area index by
1611	!-- integration of the leaf area density
1612	lai(:,:,:) = 0.0_wp
1613	DO i = nxlg, nxrg
1614	DO j = nysg, nyng
1615	DO k = pch_index-1, 0, -1
1616	lai(k,j,i) = lai(k+1,j,i) + &
1617	( 0.5_wp * ( lad_w(k+1,j,i) + &
1618	lad_s(k+1,j,i) ) * &
1619	( zw(k+1) - zu(k+1) ) ) + &
1620	( 0.5_wp * ( lad_w(k,j,i) + &
1621	lad_s(k+1,j,i) ) * &
1622	( zu(k+1) - zw(k) ) )
1623	ENDDO
1624	ENDDO
1625	ENDDO
1626
1627	!
1628	!-- Evaluation of the upward kinematic vertical heat flux within the
1629	!-- canopy
1630	DO i = nxlg, nxrg
1631	DO j = nysg, nyng
1632	DO k = 0, pch_index
1633	canopy_heat_flux(k,j,i) = cthf * &
1634	exp( -0.6_wp * lai(k,j,i) )
1635	ENDDO
1636	ENDDO
1637	ENDDO
1638
1639	!
1640	!-- The near surface heat flux is derived from the heat flux
1641	!-- distribution within the canopy
1642	shf(:,:) = canopy_heat_flux(0,:,:)
1643
1644	ENDIF
1645
1646	ENDIF
1647
1648	!
1649	!-- If required, initialize dvrp-software
1650	IF ( dt_dvrp /= 9999999.9_wp ) CALL init_dvrp
1651
1652	IF ( ocean ) THEN
1653	!
1654	!-- Initialize quantities needed for the ocean model
1655	CALL init_ocean
1656
1657	ELSE
1658	!
1659	!-- Initialize quantities for handling cloud physics
1660	!-- This routine must be called before lpm_init, because
1661	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1662	!-- lpm_init) is not defined.
1663	CALL init_cloud_physics
1664	ENDIF
1665
1666	!
1667	!-- If required, initialize particles
1668	IF ( particle_advection ) CALL lpm_init
1669
1670	!
1671	!-- Initialize the ws-scheme.
1672	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1673
1674	!
1675	!-- Setting weighting factors for calculation of perturbation pressure
1676	!-- and turbulent quantities from the RK substeps
1677	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1678
1679	weight_substep(1) = 1._wp/6._wp
1680	weight_substep(2) = 3._wp/10._wp
1681	weight_substep(3) = 8._wp/15._wp
1682
1683	weight_pres(1) = 1._wp/3._wp
1684	weight_pres(2) = 5._wp/12._wp
1685	weight_pres(3) = 1._wp/4._wp
1686
1687	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1688
1689	weight_substep(1) = 1._wp/2._wp
1690	weight_substep(2) = 1._wp/2._wp
1691
1692	weight_pres(1) = 1._wp/2._wp
1693	weight_pres(2) = 1._wp/2._wp
1694
1695	ELSE ! for Euler-method
1696
1697	weight_substep(1) = 1.0_wp
1698	weight_pres(1) = 1.0_wp
1699
1700	ENDIF
1701
1702	!
1703	!-- Initialize Rayleigh damping factors
1704	rdf = 0.0_wp
1705	rdf_sc = 0.0_wp
1706	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
1707	IF ( .NOT. ocean ) THEN
1708	DO k = nzb+1, nzt
1709	IF ( zu(k) >= rayleigh_damping_height ) THEN
1710	rdf(k) = rayleigh_damping_factor * &
1711	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
1712	/ ( zu(nzt) - rayleigh_damping_height ) )&
1713	)**2
1714	ENDIF
1715	ENDDO
1716	ELSE
1717	DO k = nzt, nzb+1, -1
1718	IF ( zu(k) <= rayleigh_damping_height ) THEN
1719	rdf(k) = rayleigh_damping_factor * &
1720	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
1721	/ ( rayleigh_damping_height - zu(nzb+1)))&
1722	)**2
1723	ENDIF
1724	ENDDO
1725	ENDIF
1726	ENDIF
1727	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1728
1729	!
1730	!-- Initialize the starting level and the vertical smoothing factor used for
1731	!-- the external pressure gradient
1732	dp_smooth_factor = 1.0_wp
1733	IF ( dp_external ) THEN
1734	!
1735	!-- Set the starting level dp_level_ind_b only if it has not been set before
1736	!-- (e.g. in init_grid).
1737	IF ( dp_level_ind_b == 0 ) THEN
1738	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1739	dp_level_ind_b = ind_array(1) - 1 + nzb
1740	! MINLOC uses lower array bound 1
1741	ENDIF
1742	IF ( dp_smooth ) THEN
1743	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
1744	DO k = dp_level_ind_b+1, nzt
1745	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
1746	( REAL( k - dp_level_ind_b, KIND=wp ) / &
1747	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
1748	ENDDO
1749	ENDIF
1750	ENDIF
1751
1752	!
1753	!-- Initialize damping zone for the potential temperature in case of
1754	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1755	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1756	ptdf_x = 0.0_wp
1757	ptdf_y = 0.0_wp
1758	IF ( bc_lr_dirrad ) THEN
1759	DO i = nxl, nxr
1760	IF ( ( i * dx ) < pt_damping_width ) THEN
1761	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
1762	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
1763	REAL( pt_damping_width, KIND=wp ) ) ) )**2
1764	ENDIF
1765	ENDDO
1766	ELSEIF ( bc_lr_raddir ) THEN
1767	DO i = nxl, nxr
1768	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1769	ptdf_x(i) = pt_damping_factor * &
1770	SIN( pi * 0.5_wp * &
1771	( ( i - nx ) * dx + pt_damping_width ) / &
1772	REAL( pt_damping_width, KIND=wp ) )**2
1773	ENDIF
1774	ENDDO
1775	ELSEIF ( bc_ns_dirrad ) THEN
1776	DO j = nys, nyn
1777	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1778	ptdf_y(j) = pt_damping_factor * &
1779	SIN( pi * 0.5_wp * &
1780	( ( j - ny ) * dy + pt_damping_width ) / &
1781	REAL( pt_damping_width, KIND=wp ) )**2
1782	ENDIF
1783	ENDDO
1784	ELSEIF ( bc_ns_raddir ) THEN
1785	DO j = nys, nyn
1786	IF ( ( j * dy ) < pt_damping_width ) THEN
1787	ptdf_y(j) = pt_damping_factor * &
1788	SIN( pi * 0.5_wp * &
1789	( pt_damping_width - j * dy ) / &
1790	REAL( pt_damping_width, KIND=wp ) )**2
1791	ENDIF
1792	ENDDO
1793	ENDIF
1794
1795	!
1796	!-- Initialize local summation arrays for routine flow_statistics.
1797	!-- This is necessary because they may not yet have been initialized when they
1798	!-- are called from flow_statistics (or - depending on the chosen model run -
1799	!-- are never initialized)
1800	sums_divnew_l = 0.0_wp
1801	sums_divold_l = 0.0_wp
1802	sums_l_l = 0.0_wp
1803	sums_up_fraction_l = 0.0_wp
1804	sums_wsts_bc_l = 0.0_wp
1805
1806	!
1807	!-- Pre-set masks for regional statistics. Default is the total model domain.
1808	!-- Ghost points are excluded because counting values at the ghost boundaries
1809	!-- would bias the statistics
1810	rmask = 1.0_wp
1811	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
1812	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
1813
1814	!
1815	!-- User-defined initializing actions. Check afterwards, if maximum number
1816	!-- of allowed timeseries is exceeded
1817	CALL user_init
1818
1819	IF ( dots_num > dots_max ) THEN
1820	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1821	' its maximum of dots_max = ', dots_max, &
1822	' &Please increase dots_max in modules.f90.'
1823	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1824	ENDIF
1825
1826	!
1827	!-- Input binary data file is not needed anymore. This line must be placed
1828	!-- after call of user_init!
1829	CALL close_file( 13 )
1830
1831	!
1832	!-- Compute total sum of active mask grid points
1833	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1834	!-- total domain
1835	!-- ngp_3d: number of grid points of the total domain
1836	ngp_2dh_outer_l = 0
1837	ngp_2dh_outer = 0
1838	ngp_2dh_s_inner_l = 0
1839	ngp_2dh_s_inner = 0
1840	ngp_2dh_l = 0
1841	ngp_2dh = 0
1842	ngp_3d_inner_l = 0.0_wp
1843	ngp_3d_inner = 0
1844	ngp_3d = 0
1845	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1846
1847	DO sr = 0, statistic_regions
1848	DO i = nxl, nxr
1849	DO j = nys, nyn
1850	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
1851	!
1852	!-- All xy-grid points
1853	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1854	!
1855	!-- xy-grid points above topography
1856	DO k = nzb_s_outer(j,i), nz + 1
1857	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1858	ENDDO
1859	DO k = nzb_s_inner(j,i), nz + 1
1860	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1861	ENDDO
1862	!
1863	!-- All grid points of the total domain above topography
1864	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1865	( nz - nzb_s_inner(j,i) + 2 )
1866	ENDIF
1867	ENDDO
1868	ENDDO
1869	ENDDO
1870
1871	sr = statistic_regions + 1
1872	#if defined( __parallel )
1873	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1874	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1875	comm2d, ierr )
1876	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1877	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1878	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1879	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1880	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1881	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1882	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1883	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1884	MPI_SUM, comm2d, ierr )
1885	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1886	#else
1887	ngp_2dh = ngp_2dh_l
1888	ngp_2dh_outer = ngp_2dh_outer_l
1889	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1890	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1891	#endif
1892
1893	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1894	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1895
1896	!
1897	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1898	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1899	!-- the respective subdomain lie below the surface topography
1900	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1901	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1902	ngp_3d_inner(:) )
1903	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1904
1905	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1906
1907	CALL location_message( 'leaving init_3d_model' )
1908
1909	END SUBROUTINE init_3d_model

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