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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1320

Last change on this file since 1320 was 1320, checked in by raasch, 10 years ago
ONLY-attribute added to USE-statements, kind-parameters added to all INTEGER and REAL declaration statements, kinds are defined in new module kinds, old module precision_kind is removed, revision history before 2012 removed, comment fields (!:) to be used for variable explanations added to all variable declaration statements
Property svn:keywords set to `Id`
File size: 63.0 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	! ONLY-attribute added to USE-statements,
23	! kind-parameters added to all INTEGER and REAL declaration statements,
24	! kinds are defined in new module kinds,
25	! old module precision_kind is removed,
26	! revision history before 2012 removed,
27	! comment fields (!:) to be used for variable explanations added to
28	! all variable declaration statements
29	!
30	! module interfaces removed
31	!
32	! Former revisions:
33	! -----------------
34	! $Id: init_3d_model.f90 1320 2014-03-20 08:40:49Z raasch $
35	!
36	! 1316 2014-03-17 07:44:59Z heinze
37	! Bugfix: allocation of w_subs
38	!
39	! 1299 2014-03-06 13:15:21Z heinze
40	! Allocate w_subs due to extension of large scale subsidence in combination
41	! with large scale forcing data (LSF_DATA)
42	!
43	! 1241 2013-10-30 11:36:58Z heinze
44	! Overwrite initial profiles in case of nudging
45	! Inititialize shf and qsws in case of large_scale_forcing
46	!
47	! 1221 2013-09-10 08:59:13Z raasch
48	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
49	! copy
50	!
51	! 1212 2013-08-15 08:46:27Z raasch
52	! array tri is allocated and included in data copy statement
53	!
54	! 1195 2013-07-01 12:27:57Z heinze
55	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
56	!
57	! 1179 2013-06-14 05:57:58Z raasch
58	! allocate and set ref_state to be used in buoyancy terms
59	!
60	! 1171 2013-05-30 11:27:45Z raasch
61	! diss array is allocated with full size if accelerator boards are used
62	!
63	! 1159 2013-05-21 11:58:22Z fricke
64	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
65	!
66	! 1153 2013-05-10 14:33:08Z raasch
67	! diss array is allocated with dummy elements even if it is not needed
68	! (required by PGI 13.4 / CUDA 5.0)
69	!
70	! 1115 2013-03-26 18:16:16Z hoffmann
71	! unused variables removed
72	!
73	! 1113 2013-03-10 02:48:14Z raasch
74	! openACC directive modified
75	!
76	! 1111 2013-03-08 23:54:10Z raasch
77	! openACC directives added for pres
78	! array diss allocated only if required
79	!
80	! 1092 2013-02-02 11:24:22Z raasch
81	! unused variables removed
82	!
83	! 1065 2012-11-22 17:42:36Z hoffmann
84	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
85	!
86	! 1053 2012-11-13 17:11:03Z hoffmann
87	! allocation and initialisation of necessary data arrays for the two-moment
88	! cloud physics scheme the two new prognostic equations (nr, qr):
89	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
90	! +tend_*, prr
91	!
92	! 1036 2012-10-22 13:43:42Z raasch
93	! code put under GPL (PALM 3.9)
94	!
95	! 1032 2012-10-21 13:03:21Z letzel
96	! save memory by not allocating pt_2 in case of neutral = .T.
97	!
98	! 1025 2012-10-07 16:04:41Z letzel
99	! bugfix: swap indices of mask for ghost boundaries
100	!
101	! 1015 2012-09-27 09:23:24Z raasch
102	! mask is set to zero for ghost boundaries
103	!
104	! 1010 2012-09-20 07:59:54Z raasch
105	! cpp switch __nopointer added for pointer free version
106	!
107	! 1003 2012-09-14 14:35:53Z raasch
108	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
109	!
110	! 1001 2012-09-13 14:08:46Z raasch
111	! all actions concerning leapfrog scheme removed
112	!
113	! 996 2012-09-07 10:41:47Z raasch
114	! little reformatting
115	!
116	! 978 2012-08-09 08:28:32Z fricke
117	! outflow damping layer removed
118	! roughness length for scalar quantites z0h added
119	! damping zone for the potential temperatur in case of non-cyclic lateral
120	! boundaries added
121	! initialization of ptdf_x, ptdf_y
122	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
123	!
124	! 849 2012-03-15 10:35:09Z raasch
125	! init_particles renamed lpm_init
126	!
127	! 825 2012-02-19 03:03:44Z raasch
128	! wang_collision_kernel renamed wang_kernel
129	!
130	! Revision 1.1 1998/03/09 16:22:22 raasch
131	! Initial revision
132	!
133	!
134	! Description:
135	! ------------
136	! Allocation of arrays and initialization of the 3D model via
137	! a) pre-run the 1D model
138	! or
139	! b) pre-set constant linear profiles
140	! or
141	! c) read values of a previous run
142	!------------------------------------------------------------------------------!
143
144	USE advec_ws
145
146	USE arrays_3d
147
148	USE cloud_parameters, &
149	ONLY: nc_const, precipitation_amount, precipitation_rate, prr
150
151	USE constants, &
152	ONLY: pi
153
154	USE control_parameters
155
156	USE grid_variables, &
157	ONLY: dx, dy
158
159	USE indices
160
161	USE kinds
162
163	USE ls_forcing_mod
164
165	USE model_1d, &
166	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
167
168	USE netcdf_control
169
170	USE particle_attributes, &
171	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
172
173	USE pegrid
174
175	USE random_function_mod
176
177	USE statistics, &
178	ONLY: hom, hom_sum, pr_palm, rmask, spectrum_x, spectrum_y, &
179	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
180	sums_l_l, sums_up_fraction_l, sums_wsts_bc_l, ts_value, &
181	weight_pres, weight_substep
182
183	USE transpose_indices
184
185	IMPLICIT NONE
186
187	INTEGER(iwp) :: i !:
188	INTEGER(iwp) :: ind_array(1) !:
189	INTEGER(iwp) :: j !:
190	INTEGER(iwp) :: k !:
191	INTEGER(iwp) :: sr !:
192
193	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !:
194
195	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !:
196	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !:
197
198	REAL(wp), DIMENSION(1:2) :: volume_flow_area_l !:
199	REAL(wp), DIMENSION(1:2) :: volume_flow_initial_l !:
200
201	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !:
202	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !:
203
204
205	!
206	!-- Allocate arrays
207	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
208	ngp_3d(0:statistic_regions), &
209	ngp_3d_inner(0:statistic_regions), &
210	ngp_3d_inner_l(0:statistic_regions), &
211	ngp_3d_inner_tmp(0:statistic_regions), &
212	sums_divnew_l(0:statistic_regions), &
213	sums_divold_l(0:statistic_regions) )
214	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
215	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
216	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
217	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
218	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
219	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
220	sums(nzb:nzt+1,pr_palm+max_pr_user), &
221	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
222	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
223	sums_up_fraction_l(10,3,0:statistic_regions), &
224	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
225	ts_value(dots_max,0:statistic_regions) )
226	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
227
228	ALLOCATE( rif(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
229	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
230	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
231	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
232	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
233	z0h(nysg:nyng,nxlg:nxrg) )
234
235	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
236	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
237	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
238	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
239	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
240
241	#if defined( __nopointer )
242	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
243	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
244	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
245	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
246	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
247	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
248	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
249	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
250	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
251	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
252	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
253	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
254	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
255	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
256	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
257	#else
258	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
259	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
260	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
261	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
262	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
263	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
264	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
265	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
266	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
267	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
268	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
269	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
270	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
271	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
272	IF ( .NOT. neutral ) THEN
273	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
274	ENDIF
275	#endif
276
277	!
278	!-- Following array is required for perturbation pressure within the iterative
279	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
280	!-- the weighted average of the substeps and cannot be used in the Poisson
281	!-- solver.
282	IF ( psolver == 'sor' ) THEN
283	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
284	ELSEIF ( psolver == 'multigrid' ) THEN
285	!
286	!-- For performance reasons, multigrid is using one ghost layer only
287	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
288	ENDIF
289
290	!
291	!-- Array for storing constant coeffficients of the tridiagonal solver
292	IF ( psolver == 'poisfft' ) THEN
293	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
294	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
295	ENDIF
296
297	IF ( humidity .OR. passive_scalar ) THEN
298	!
299	!-- 2D-humidity/scalar arrays
300	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
301	qsws(nysg:nyng,nxlg:nxrg), &
302	qswst(nysg:nyng,nxlg:nxrg) )
303
304	!
305	!-- 3D-humidity/scalar arrays
306	#if defined( __nopointer )
307	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
308	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
309	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
310	#else
311	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
312	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
313	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
314	#endif
315
316	!
317	!-- 3D-arrays needed for humidity only
318	IF ( humidity ) THEN
319	#if defined( __nopointer )
320	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
321	#else
322	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
323	#endif
324
325	IF ( cloud_physics ) THEN
326
327	!
328	!-- Liquid water content
329	#if defined( __nopointer )
330	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
331	#else
332	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
333	#endif
334	!
335	!-- Precipitation amount and rate (only needed if output is switched)
336	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
337	precipitation_rate(nysg:nyng,nxlg:nxrg) )
338
339	IF ( icloud_scheme == 0 ) THEN
340	!
341	!-- 1D-arrays
342	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
343	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
344	!
345	!-- 3D-cloud water content
346	#if defined( __nopointer )
347	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
348	#else
349	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
350	#endif
351	!
352	!-- 3D-tendency arrays
353	ALLOCATE( tend_pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
354	tend_q(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
355
356	IF ( precipitation ) THEN
357	!
358	!-- 1D-arrays
359	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
360	!
361	!
362	!-- 3D-tendency arrays
363	ALLOCATE( tend_nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
364	tend_qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
365	!
366	!-- 2D-rain water content and rain drop concentration arrays
367	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
368	qrsws(nysg:nyng,nxlg:nxrg), &
369	qrswst(nysg:nyng,nxlg:nxrg), &
370	nrs(nysg:nyng,nxlg:nxrg), &
371	nrsws(nysg:nyng,nxlg:nxrg), &
372	nrswst(nysg:nyng,nxlg:nxrg) )
373	!
374	!-- 3D-rain water content, rain drop concentration arrays
375	#if defined( __nopointer )
376	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
377	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
378	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
379	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
380	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
381	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
382	#else
383	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
384	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
385	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
386	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
387	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
388	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
389	#endif
390	!
391	!-- 3d-precipitation rate
392	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
393	ENDIF
394
395	ENDIF
396	ENDIF
397
398	IF ( cloud_droplets ) THEN
399	!
400	!-- Liquid water content, change in liquid water content
401	#if defined( __nopointer )
402	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
403	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
404	#else
405	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
406	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
407	#endif
408	!
409	!-- Real volume of particles (with weighting), volume of particles
410	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
411	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
412	ENDIF
413
414	ENDIF
415
416	ENDIF
417
418	IF ( ocean ) THEN
419	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
420	saswst(nysg:nyng,nxlg:nxrg) )
421	#if defined( __nopointer )
422	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
423	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
424	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
425	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
426	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
427	#else
428	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
429	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
430	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
431	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
432	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
433	prho => prho_1
434	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
435	! density to be apointer
436	#endif
437	IF ( humidity_remote ) THEN
438	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
439	qswst_remote = 0.0
440	ENDIF
441	ENDIF
442
443	!
444	!-- 3D-array for storing the dissipation, needed for calculating the sgs
445	!-- particle velocities
446	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence .OR. &
447	num_acc_per_node > 0 ) THEN
448	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
449	ENDIF
450
451	IF ( dt_dosp /= 9999999.9 ) THEN
452	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
453	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
454	spectrum_x = 0.0
455	spectrum_y = 0.0
456	ENDIF
457
458	!
459	!-- 1D-array for large scale subsidence velocity
460	ALLOCATE ( w_subs(nzb:nzt+1) )
461	w_subs = 0.0
462
463
464	!
465	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
466	IF ( plant_canopy ) THEN
467	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
468	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
469	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
470	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
471	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
472
473	IF ( passive_scalar ) THEN
474	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
475	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
476	ENDIF
477
478	IF ( cthf /= 0.0 ) THEN
479	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
480	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
481	ENDIF
482
483	ENDIF
484
485	!
486	!-- 4D-array for storing the Rif-values at vertical walls
487	IF ( topography /= 'flat' ) THEN
488	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
489	rif_wall = 0.0
490	ENDIF
491
492	!
493	!-- Arrays to store velocity data from t-dt and the phase speeds which
494	!-- are needed for radiation boundary conditions
495	IF ( outflow_l ) THEN
496	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
497	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
498	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
499	ENDIF
500	IF ( outflow_r ) THEN
501	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
502	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
503	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
504	ENDIF
505	IF ( outflow_l .OR. outflow_r ) THEN
506	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
507	c_w(nzb:nzt+1,nysg:nyng) )
508	ENDIF
509	IF ( outflow_s ) THEN
510	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
511	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
512	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
513	ENDIF
514	IF ( outflow_n ) THEN
515	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
516	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
517	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
518	ENDIF
519	IF ( outflow_s .OR. outflow_n ) THEN
520	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
521	c_w(nzb:nzt+1,nxlg:nxrg) )
522	ENDIF
523	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
524	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
525	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
526	ENDIF
527
528
529	#if ! defined( __nopointer )
530	!
531	!-- Initial assignment of the pointers
532	e => e_1; e_p => e_2; te_m => e_3
533	IF ( .NOT. neutral ) THEN
534	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
535	ELSE
536	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
537	ENDIF
538	u => u_1; u_p => u_2; tu_m => u_3
539	v => v_1; v_p => v_2; tv_m => v_3
540	w => w_1; w_p => w_2; tw_m => w_3
541
542	IF ( humidity .OR. passive_scalar ) THEN
543	q => q_1; q_p => q_2; tq_m => q_3
544	IF ( humidity ) THEN
545	vpt => vpt_1
546	IF ( cloud_physics ) THEN
547	ql => ql_1
548	IF ( icloud_scheme == 0 ) THEN
549	qc => qc_1
550	IF ( precipitation ) THEN
551	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
552	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
553	ENDIF
554	ENDIF
555	ENDIF
556	ENDIF
557	IF ( cloud_droplets ) THEN
558	ql => ql_1
559	ql_c => ql_2
560	ENDIF
561	ENDIF
562
563	IF ( ocean ) THEN
564	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
565	ENDIF
566	#endif
567
568	!
569	!-- Allocate arrays containing the RK coefficient for calculation of
570	!-- perturbation pressure and turbulent fluxes. At this point values are
571	!-- set for pressure calculation during initialization (where no timestep
572	!-- is done). Further below the values needed within the timestep scheme
573	!-- will be set.
574	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
575	weight_pres(1:intermediate_timestep_count_max) )
576	weight_substep = 1.0
577	weight_pres = 1.0
578	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
579
580	!
581	!-- Initialize model variables
582	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
583	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
584	!
585	!-- First model run of a possible job queue.
586	!-- Initial profiles of the variables must be computes.
587	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
588	!
589	!-- Use solutions of the 1D model as initial profiles,
590	!-- start 1D model
591	CALL init_1d_model
592	!
593	!-- Transfer initial profiles to the arrays of the 3D model
594	DO i = nxlg, nxrg
595	DO j = nysg, nyng
596	e(:,j,i) = e1d
597	kh(:,j,i) = kh1d
598	km(:,j,i) = km1d
599	pt(:,j,i) = pt_init
600	u(:,j,i) = u1d
601	v(:,j,i) = v1d
602	ENDDO
603	ENDDO
604
605	IF ( humidity .OR. passive_scalar ) THEN
606	DO i = nxlg, nxrg
607	DO j = nysg, nyng
608	q(:,j,i) = q_init
609	ENDDO
610	ENDDO
611	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
612	precipitation ) THEN
613	DO i = nxlg, nxrg
614	DO j = nysg, nyng
615	qr(:,j,i) = 0.0
616	nr(:,j,i) = 0.0
617	ENDDO
618	ENDDO
619	!
620	!-- Initialze nc_1d with default value
621	nc_1d(:) = nc_const
622
623	ENDIF
624	ENDIF
625
626	IF ( .NOT. constant_diffusion ) THEN
627	DO i = nxlg, nxrg
628	DO j = nysg, nyng
629	e(:,j,i) = e1d
630	ENDDO
631	ENDDO
632	!
633	!-- Store initial profiles for output purposes etc.
634	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
635
636	IF ( prandtl_layer ) THEN
637	rif = rif1d(nzb+1)
638	ts = 0.0 ! could actually be computed more accurately in the
639	! 1D model. Update when opportunity arises.
640	us = us1d
641	usws = usws1d
642	vsws = vsws1d
643	ELSE
644	ts = 0.0 ! must be set, because used in
645	rif = 0.0 ! flowste
646	us = 0.0
647	usws = 0.0
648	vsws = 0.0
649	ENDIF
650
651	ELSE
652	e = 0.0 ! must be set, because used in
653	rif = 0.0 ! flowste
654	ts = 0.0
655	us = 0.0
656	usws = 0.0
657	vsws = 0.0
658	ENDIF
659	uswst = top_momentumflux_u
660	vswst = top_momentumflux_v
661
662	!
663	!-- In every case qs = 0.0 (see also pt)
664	!-- This could actually be computed more accurately in the 1D model.
665	!-- Update when opportunity arises!
666	IF ( humidity .OR. passive_scalar ) THEN
667	qs = 0.0
668	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
669	precipitation ) THEN
670	qrs = 0.0
671	nrs = 0.0
672	ENDIF
673	ENDIF
674
675	!
676	!-- inside buildings set velocities back to zero
677	IF ( topography /= 'flat' ) THEN
678	DO i = nxl-1, nxr+1
679	DO j = nys-1, nyn+1
680	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
681	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
682	ENDDO
683	ENDDO
684
685	!
686	!-- WARNING: The extra boundary conditions set after running the
687	!-- ------- 1D model impose an error on the divergence one layer
688	!-- below the topography; need to correct later
689	!-- ATTENTION: Provisional correction for Piacsek & Williams
690	!-- --------- advection scheme: keep u and v zero one layer below
691	!-- the topography.
692	IF ( ibc_uv_b == 1 ) THEN
693	!
694	!-- Neumann condition
695	DO i = nxl-1, nxr+1
696	DO j = nys-1, nyn+1
697	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
698	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
699	ENDDO
700	ENDDO
701
702	ENDIF
703
704	ENDIF
705
706	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
707	THEN
708
709	!
710	!-- Overwrite initial profiles in case of nudging
711	IF ( nudging ) THEN
712	pt_init = ptnudge(:,1)
713	u_init = unudge(:,1)
714	v_init = vnudge(:,1)
715	IF ( humidity .OR. passive_scalar ) THEN
716	q_init = qnudge(:,1)
717	ENDIF
718
719	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
720	'scalars from NUDGING_DATA are used.'
721	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
722	ENDIF
723
724	!
725	!-- Use constructed initial profiles (velocity constant with height,
726	!-- temperature profile with constant gradient)
727	DO i = nxlg, nxrg
728	DO j = nysg, nyng
729	pt(:,j,i) = pt_init
730	u(:,j,i) = u_init
731	v(:,j,i) = v_init
732	ENDDO
733	ENDDO
734
735	!
736	!-- Set initial horizontal velocities at the lowest computational grid
737	!-- levels to zero in order to avoid too small time steps caused by the
738	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
739	!-- in the limiting formula!). The original values are stored to be later
740	!-- used for volume flow control.
741	DO i = nxlg, nxrg
742	DO j = nysg, nyng
743	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
744	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
745	ENDDO
746	ENDDO
747
748	IF ( humidity .OR. passive_scalar ) THEN
749	DO i = nxlg, nxrg
750	DO j = nysg, nyng
751	q(:,j,i) = q_init
752	ENDDO
753	ENDDO
754	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
755	!
756	!-- Initialze nc_1d with default value
757	nc_1d(:) = nc_const
758
759	IF ( precipitation ) THEN
760	DO i = nxlg, nxrg
761	DO j = nysg, nyng
762	qr(:,j,i) = 0.0
763	nr(:,j,i) = 0.0
764	ENDDO
765	ENDDO
766	ENDIF
767
768	ENDIF
769	ENDIF
770
771	IF ( ocean ) THEN
772	DO i = nxlg, nxrg
773	DO j = nysg, nyng
774	sa(:,j,i) = sa_init
775	ENDDO
776	ENDDO
777	ENDIF
778
779	IF ( constant_diffusion ) THEN
780	km = km_constant
781	kh = km / prandtl_number
782	e = 0.0
783	ELSEIF ( e_init > 0.0 ) THEN
784	DO k = nzb+1, nzt
785	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
786	ENDDO
787	km(nzb,:,:) = km(nzb+1,:,:)
788	km(nzt+1,:,:) = km(nzt,:,:)
789	kh = km / prandtl_number
790	e = e_init
791	ELSE
792	IF ( .NOT. ocean ) THEN
793	kh = 0.01 ! there must exist an initial diffusion, because
794	km = 0.01 ! otherwise no TKE would be produced by the
795	! production terms, as long as not yet
796	! e = (u/cm)*2 at k=nzb+1
797	ELSE
798	kh = 0.00001
799	km = 0.00001
800	ENDIF
801	e = 0.0
802	ENDIF
803	rif = 0.0
804	ts = 0.0
805	us = 0.0
806	usws = 0.0
807	uswst = top_momentumflux_u
808	vsws = 0.0
809	vswst = top_momentumflux_v
810	IF ( humidity .OR. passive_scalar ) qs = 0.0
811
812	!
813	!-- Compute initial temperature field and other constants used in case
814	!-- of a sloping surface
815	IF ( sloping_surface ) CALL init_slope
816
817	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
818	THEN
819	!
820	!-- Initialization will completely be done by the user
821	CALL user_init_3d_model
822
823	ENDIF
824	!
825	!-- Bottom boundary
826	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
827	u(nzb,:,:) = 0.0
828	v(nzb,:,:) = 0.0
829	ENDIF
830
831	!
832	!-- Apply channel flow boundary condition
833	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
834	u(nzt+1,:,:) = 0.0
835	v(nzt+1,:,:) = 0.0
836	ENDIF
837
838	!
839	!-- Calculate virtual potential temperature
840	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
841
842	!
843	!-- Store initial profiles for output purposes etc.
844	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
845	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
846	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
847	hom(nzb,1,5,:) = 0.0
848	hom(nzb,1,6,:) = 0.0
849	ENDIF
850	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
851	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
852	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
853
854	IF ( ocean ) THEN
855	!
856	!-- Store initial salinity profile
857	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
858	ENDIF
859
860	IF ( humidity ) THEN
861	!
862	!-- Store initial profile of total water content, virtual potential
863	!-- temperature
864	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
865	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
866	IF ( cloud_physics .OR. cloud_droplets ) THEN
867	!
868	!-- Store initial profile of specific humidity and potential
869	!-- temperature
870	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
871	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
872	ENDIF
873	ENDIF
874
875	IF ( passive_scalar ) THEN
876	!
877	!-- Store initial scalar profile
878	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
879	ENDIF
880
881	!
882	!-- Initialize fluxes at bottom surface
883	IF ( use_surface_fluxes ) THEN
884
885	IF ( constant_heatflux ) THEN
886	!
887	!-- Heat flux is prescribed
888	IF ( random_heatflux ) THEN
889	CALL disturb_heatflux
890	ELSE
891	shf = surface_heatflux
892	!
893	!-- Initialize shf with data from external file LSF_DATA
894	IF ( large_scale_forcing .AND. lsf_surf ) THEN
895	CALL ls_forcing_surf ( simulated_time )
896	ENDIF
897
898	!
899	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
900	IF ( TRIM( topography ) /= 'flat' ) THEN
901	DO i = nxlg, nxrg
902	DO j = nysg, nyng
903	IF ( nzb_s_inner(j,i) /= 0 ) THEN
904	shf(j,i) = wall_heatflux(0)
905	ENDIF
906	ENDDO
907	ENDDO
908	ENDIF
909	ENDIF
910	ENDIF
911
912	!
913	!-- Determine the near-surface water flux
914	IF ( humidity .OR. passive_scalar ) THEN
915	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
916	precipitation ) THEN
917	qrsws = 0.0
918	nrsws = 0.0
919	ENDIF
920	IF ( constant_waterflux ) THEN
921	qsws = surface_waterflux
922	!
923	!-- Over topography surface_waterflux is replaced by
924	!-- wall_humidityflux(0)
925	IF ( TRIM( topography ) /= 'flat' ) THEN
926	wall_qflux = wall_humidityflux
927	DO i = nxlg, nxrg
928	DO j = nysg, nyng
929	IF ( nzb_s_inner(j,i) /= 0 ) THEN
930	qsws(j,i) = wall_qflux(0)
931	ENDIF
932	ENDDO
933	ENDDO
934	ENDIF
935	ENDIF
936	ENDIF
937
938	ENDIF
939
940	!
941	!-- Initialize fluxes at top surface
942	!-- Currently, only the heatflux and salinity flux can be prescribed.
943	!-- The latent flux is zero in this case!
944	IF ( use_top_fluxes ) THEN
945
946	IF ( constant_top_heatflux ) THEN
947	!
948	!-- Heat flux is prescribed
949	tswst = top_heatflux
950
951	IF ( humidity .OR. passive_scalar ) THEN
952	qswst = 0.0
953	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
954	precipitation ) THEN
955	nrswst = 0.0
956	qrswst = 0.0
957	ENDIF
958	ENDIF
959
960	IF ( ocean ) THEN
961	saswsb = bottom_salinityflux
962	saswst = top_salinityflux
963	ENDIF
964	ENDIF
965
966	!
967	!-- Initialization in case of a coupled model run
968	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
969	tswst = 0.0
970	ENDIF
971
972	ENDIF
973
974	!
975	!-- Initialize Prandtl layer quantities
976	IF ( prandtl_layer ) THEN
977
978	z0 = roughness_length
979	z0h = z0h_factor * z0
980
981	IF ( .NOT. constant_heatflux ) THEN
982	!
983	!-- Surface temperature is prescribed. Here the heat flux cannot be
984	!-- simply estimated, because therefore rif, u* and theta* would have
985	!-- to be computed by iteration. This is why the heat flux is assumed
986	!-- to be zero before the first time step. It approaches its correct
987	!-- value in the course of the first few time steps.
988	shf = 0.0
989	ENDIF
990
991	IF ( humidity .OR. passive_scalar ) THEN
992	IF ( .NOT. constant_waterflux ) qsws = 0.0
993	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
994	precipitation ) THEN
995	qrsws = 0.0
996	nrsws = 0.0
997	ENDIF
998	ENDIF
999
1000	ENDIF
1001
1002	!
1003	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1004	!-- the reference state will be set (overwritten) in init_ocean)
1005	IF ( use_single_reference_value ) THEN
1006	IF ( .NOT. humidity ) THEN
1007	ref_state(:) = pt_reference
1008	ELSE
1009	ref_state(:) = vpt_reference
1010	ENDIF
1011	ELSE
1012	IF ( .NOT. humidity ) THEN
1013	ref_state(:) = pt_init(:)
1014	ELSE
1015	ref_state(:) = vpt(:,nys,nxl)
1016	ENDIF
1017	ENDIF
1018
1019	!
1020	!-- For the moment, vertical velocity is zero
1021	w = 0.0
1022
1023	!
1024	!-- Initialize array sums (must be defined in first call of pres)
1025	sums = 0.0
1026
1027	!
1028	!-- In case of iterative solvers, p must get an initial value
1029	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0
1030
1031	!
1032	!-- Treating cloud physics, liquid water content and precipitation amount
1033	!-- are zero at beginning of the simulation
1034	IF ( cloud_physics ) THEN
1035	ql = 0.0
1036	IF ( precipitation ) precipitation_amount = 0.0
1037	IF ( icloud_scheme == 0 ) THEN
1038	qc = 0.0
1039	nc_1d = nc_const
1040	ENDIF
1041	ENDIF
1042	!
1043	!-- Impose vortex with vertical axis on the initial velocity profile
1044	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1045	CALL init_rankine
1046	ENDIF
1047
1048	!
1049	!-- Impose temperature anomaly (advection test only)
1050	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1051	CALL init_pt_anomaly
1052	ENDIF
1053
1054	!
1055	!-- If required, change the surface temperature at the start of the 3D run
1056	IF ( pt_surface_initial_change /= 0.0 ) THEN
1057	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1058	ENDIF
1059
1060	!
1061	!-- If required, change the surface humidity/scalar at the start of the 3D
1062	!-- run
1063	IF ( ( humidity .OR. passive_scalar ) .AND. &
1064	q_surface_initial_change /= 0.0 ) THEN
1065	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1066	ENDIF
1067	!
1068	!-- Initialize the random number generator (from numerical recipes)
1069	CALL random_function_ini
1070
1071	!
1072	!-- Initialize old and new time levels.
1073	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1074	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1075
1076	IF ( humidity .OR. passive_scalar ) THEN
1077	tq_m = 0.0
1078	q_p = q
1079	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1080	precipitation ) THEN
1081	tqr_m = 0.0
1082	qr_p = qr
1083	tnr_m = 0.0
1084	nr_p = nr
1085	ENDIF
1086	ENDIF
1087
1088	IF ( ocean ) THEN
1089	tsa_m = 0.0
1090	sa_p = sa
1091	ENDIF
1092
1093
1094	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1095	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1096	THEN
1097	!
1098	!-- When reading data for cyclic fill of 3D prerun data files, read
1099	!-- some of the global variables from the restart file which are required
1100	!-- for initializing the inflow
1101	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1102
1103	DO i = 0, io_blocks-1
1104	IF ( i == io_group ) THEN
1105	CALL read_parts_of_var_list
1106	CALL close_file( 13 )
1107	ENDIF
1108	#if defined( __parallel )
1109	CALL MPI_BARRIER( comm2d, ierr )
1110	#endif
1111	ENDDO
1112
1113	ENDIF
1114
1115	!
1116	!-- Read binary data from restart file
1117	DO i = 0, io_blocks-1
1118	IF ( i == io_group ) THEN
1119	CALL read_3d_binary
1120	ENDIF
1121	#if defined( __parallel )
1122	CALL MPI_BARRIER( comm2d, ierr )
1123	#endif
1124	ENDDO
1125
1126	!
1127	!-- Initialization of the turbulence recycling method
1128	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1129	turbulent_inflow ) THEN
1130	!
1131	!-- First store the profiles to be used at the inflow.
1132	!-- These profiles are the (temporally) and horizontally averaged vertical
1133	!-- profiles from the prerun. Alternatively, prescribed profiles
1134	!-- for u,v-components can be used.
1135	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
1136
1137	IF ( use_prescribed_profile_data ) THEN
1138	mean_inflow_profiles(:,1) = u_init ! u
1139	mean_inflow_profiles(:,2) = v_init ! v
1140	ELSE
1141	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1142	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1143	ENDIF
1144	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1145	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1146
1147	!
1148	!-- If necessary, adjust the horizontal flow field to the prescribed
1149	!-- profiles
1150	IF ( use_prescribed_profile_data ) THEN
1151	DO i = nxlg, nxrg
1152	DO j = nysg, nyng
1153	DO k = nzb, nzt+1
1154	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1155	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1156	ENDDO
1157	ENDDO
1158	ENDDO
1159	ENDIF
1160
1161	!
1162	!-- Use these mean profiles at the inflow (provided that Dirichlet
1163	!-- conditions are used)
1164	IF ( inflow_l ) THEN
1165	DO j = nysg, nyng
1166	DO k = nzb, nzt+1
1167	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1168	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1169	w(k,j,nxlg:-1) = 0.0
1170	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1171	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1172	ENDDO
1173	ENDDO
1174	ENDIF
1175
1176	!
1177	!-- Calculate the damping factors to be used at the inflow. For a
1178	!-- turbulent inflow the turbulent fluctuations have to be limited
1179	!-- vertically because otherwise the turbulent inflow layer will grow
1180	!-- in time.
1181	IF ( inflow_damping_height == 9999999.9 ) THEN
1182	!
1183	!-- Default: use the inversion height calculated by the prerun; if
1184	!-- this is zero, inflow_damping_height must be explicitly
1185	!-- specified.
1186	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0 ) THEN
1187	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1188	ELSE
1189	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1190	'explicitly specified because&the inversion height ', &
1191	'calculated by the prerun is zero.'
1192	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1193	ENDIF
1194
1195	ENDIF
1196
1197	IF ( inflow_damping_width == 9999999.9 ) THEN
1198	!
1199	!-- Default for the transition range: one tenth of the undamped
1200	!-- layer
1201	inflow_damping_width = 0.1 * inflow_damping_height
1202
1203	ENDIF
1204
1205	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1206
1207	DO k = nzb, nzt+1
1208
1209	IF ( zu(k) <= inflow_damping_height ) THEN
1210	inflow_damping_factor(k) = 1.0
1211	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1212	inflow_damping_factor(k) = 1.0 - &
1213	( zu(k) - inflow_damping_height ) / &
1214	inflow_damping_width
1215	ELSE
1216	inflow_damping_factor(k) = 0.0
1217	ENDIF
1218
1219	ENDDO
1220
1221	ENDIF
1222
1223	!
1224	!-- Inside buildings set velocities and TKE back to zero
1225	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1226	topography /= 'flat' ) THEN
1227	!
1228	!-- Inside buildings set velocities and TKE back to zero.
1229	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1230	!-- maybe revise later.
1231	DO i = nxlg, nxrg
1232	DO j = nysg, nyng
1233	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1234	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1235	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1236	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1237	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1238	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1239	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1240	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1241	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1242	ENDDO
1243	ENDDO
1244
1245	ENDIF
1246
1247	!
1248	!-- Calculate initial temperature field and other constants used in case
1249	!-- of a sloping surface
1250	IF ( sloping_surface ) CALL init_slope
1251
1252	!
1253	!-- Initialize new time levels (only done in order to set boundary values
1254	!-- including ghost points)
1255	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1256	IF ( humidity .OR. passive_scalar ) THEN
1257	q_p = q
1258	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1259	precipitation ) THEN
1260	qr_p = qr
1261	nr_p = nr
1262	ENDIF
1263	ENDIF
1264	IF ( ocean ) sa_p = sa
1265
1266	!
1267	!-- Allthough tendency arrays are set in prognostic_equations, they have
1268	!-- have to be predefined here because they are used (but multiplied with 0)
1269	!-- there before they are set.
1270	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1271	IF ( humidity .OR. passive_scalar ) THEN
1272	tq_m = 0.0
1273	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1274	precipitation ) THEN
1275	tqr_m = 0.0
1276	tnr_m = 0.0
1277	ENDIF
1278	ENDIF
1279	IF ( ocean ) tsa_m = 0.0
1280
1281	ELSE
1282	!
1283	!-- Actually this part of the programm should not be reached
1284	message_string = 'unknown initializing problem'
1285	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1286	ENDIF
1287
1288
1289	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1290	!
1291	!-- Initialize old timelevels needed for radiation boundary conditions
1292	IF ( outflow_l ) THEN
1293	u_m_l(:,:,:) = u(:,:,1:2)
1294	v_m_l(:,:,:) = v(:,:,0:1)
1295	w_m_l(:,:,:) = w(:,:,0:1)
1296	ENDIF
1297	IF ( outflow_r ) THEN
1298	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1299	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1300	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1301	ENDIF
1302	IF ( outflow_s ) THEN
1303	u_m_s(:,:,:) = u(:,0:1,:)
1304	v_m_s(:,:,:) = v(:,1:2,:)
1305	w_m_s(:,:,:) = w(:,0:1,:)
1306	ENDIF
1307	IF ( outflow_n ) THEN
1308	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1309	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1310	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1311	ENDIF
1312
1313	ENDIF
1314
1315	!
1316	!-- Calculate the initial volume flow at the right and north boundary
1317	IF ( conserve_volume_flow ) THEN
1318
1319	IF ( use_prescribed_profile_data ) THEN
1320
1321	volume_flow_initial_l = 0.0
1322	volume_flow_area_l = 0.0
1323
1324	IF ( nxr == nx ) THEN
1325	DO j = nys, nyn
1326	DO k = nzb_2d(j,nx)+1, nzt
1327	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1328	u_init(k) * dzw(k)
1329	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1330	ENDDO
1331	ENDDO
1332	ENDIF
1333
1334	IF ( nyn == ny ) THEN
1335	DO i = nxl, nxr
1336	DO k = nzb_2d(ny,i)+1, nzt
1337	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1338	v_init(k) * dzw(k)
1339	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1340	ENDDO
1341	ENDDO
1342	ENDIF
1343
1344	#if defined( __parallel )
1345	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1346	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1347	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1348	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1349
1350	#else
1351	volume_flow_initial = volume_flow_initial_l
1352	volume_flow_area = volume_flow_area_l
1353	#endif
1354
1355	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1356
1357	volume_flow_initial_l = 0.0
1358	volume_flow_area_l = 0.0
1359
1360	IF ( nxr == nx ) THEN
1361	DO j = nys, nyn
1362	DO k = nzb_2d(j,nx)+1, nzt
1363	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1364	hom_sum(k,1,0) * dzw(k)
1365	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1366	ENDDO
1367	ENDDO
1368	ENDIF
1369
1370	IF ( nyn == ny ) THEN
1371	DO i = nxl, nxr
1372	DO k = nzb_2d(ny,i)+1, nzt
1373	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1374	hom_sum(k,2,0) * dzw(k)
1375	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1376	ENDDO
1377	ENDDO
1378	ENDIF
1379
1380	#if defined( __parallel )
1381	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1382	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1383	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1384	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1385
1386	#else
1387	volume_flow_initial = volume_flow_initial_l
1388	volume_flow_area = volume_flow_area_l
1389	#endif
1390
1391	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1392
1393	volume_flow_initial_l = 0.0
1394	volume_flow_area_l = 0.0
1395
1396	IF ( nxr == nx ) THEN
1397	DO j = nys, nyn
1398	DO k = nzb_2d(j,nx)+1, nzt
1399	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1400	u(k,j,nx) * dzw(k)
1401	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1402	ENDDO
1403	ENDDO
1404	ENDIF
1405
1406	IF ( nyn == ny ) THEN
1407	DO i = nxl, nxr
1408	DO k = nzb_2d(ny,i)+1, nzt
1409	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1410	v(k,ny,i) * dzw(k)
1411	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1412	ENDDO
1413	ENDDO
1414	ENDIF
1415
1416	#if defined( __parallel )
1417	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1418	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1419	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1420	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1421
1422	#else
1423	volume_flow_initial = volume_flow_initial_l
1424	volume_flow_area = volume_flow_area_l
1425	#endif
1426
1427	ENDIF
1428
1429	!
1430	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1431	!-- from u\|v_bulk instead
1432	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1433	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1434	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1435	ENDIF
1436
1437	ENDIF
1438
1439	!
1440	!-- Initialize quantities for special advections schemes
1441	CALL init_advec
1442
1443	!
1444	!-- Impose random perturbation on the horizontal velocity field and then
1445	!-- remove the divergences from the velocity field at the initial stage
1446	IF ( create_disturbances .AND. &
1447	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1448	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1449
1450	CALL disturb_field( nzb_u_inner, tend, u )
1451	CALL disturb_field( nzb_v_inner, tend, v )
1452	n_sor = nsor_ini
1453	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1454	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1455	!$acc copyin( weight_pres, weight_substep ) &
1456	!$acc copy( tri, tric, u, v, w )
1457	CALL pres
1458	!$acc end data
1459	n_sor = nsor
1460	ENDIF
1461
1462	!
1463	!-- Initialization of the leaf area density
1464	IF ( plant_canopy ) THEN
1465
1466	SELECT CASE ( TRIM( canopy_mode ) )
1467
1468	CASE( 'block' )
1469
1470	DO i = nxlg, nxrg
1471	DO j = nysg, nyng
1472	lad_s(:,j,i) = lad(:)
1473	cdc(:,j,i) = drag_coefficient
1474	IF ( passive_scalar ) THEN
1475	sls(:,j,i) = leaf_surface_concentration
1476	sec(:,j,i) = scalar_exchange_coefficient
1477	ENDIF
1478	ENDDO
1479	ENDDO
1480
1481	CASE DEFAULT
1482
1483	!
1484	!-- The DEFAULT case is reached either if the parameter
1485	!-- canopy mode contains a wrong character string or if the
1486	!-- user has coded a special case in the user interface.
1487	!-- There, the subroutine user_init_plant_canopy checks
1488	!-- which of these two conditions applies.
1489	CALL user_init_plant_canopy
1490
1491	END SELECT
1492
1493	CALL exchange_horiz( lad_s, nbgp )
1494	CALL exchange_horiz( cdc, nbgp )
1495
1496	IF ( passive_scalar ) THEN
1497	CALL exchange_horiz( sls, nbgp )
1498	CALL exchange_horiz( sec, nbgp )
1499	ENDIF
1500
1501	!
1502	!-- Sharp boundaries of the plant canopy in horizontal directions
1503	!-- In vertical direction the interpolation is retained, as the leaf
1504	!-- area density is initialised by prescribing a vertical profile
1505	!-- consisting of piecewise linear segments. The upper boundary
1506	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1507
1508	DO i = nxl, nxr
1509	DO j = nys, nyn
1510	DO k = nzb, nzt+1
1511	IF ( lad_s(k,j,i) > 0.0 ) THEN
1512	lad_u(k,j,i) = lad_s(k,j,i)
1513	lad_u(k,j,i+1) = lad_s(k,j,i)
1514	lad_v(k,j,i) = lad_s(k,j,i)
1515	lad_v(k,j+1,i) = lad_s(k,j,i)
1516	ENDIF
1517	ENDDO
1518	DO k = nzb, nzt
1519	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1520	ENDDO
1521	ENDDO
1522	ENDDO
1523
1524	lad_w(pch_index,:,:) = 0.0
1525	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1526
1527	CALL exchange_horiz( lad_u, nbgp )
1528	CALL exchange_horiz( lad_v, nbgp )
1529	CALL exchange_horiz( lad_w, nbgp )
1530
1531	!
1532	!-- Initialisation of the canopy heat source distribution
1533	IF ( cthf /= 0.0 ) THEN
1534	!
1535	!-- Piecewise evaluation of the leaf area index by
1536	!-- integration of the leaf area density
1537	lai(:,:,:) = 0.0
1538	DO i = nxlg, nxrg
1539	DO j = nysg, nyng
1540	DO k = pch_index-1, 0, -1
1541	lai(k,j,i) = lai(k+1,j,i) + &
1542	( 0.5 * ( lad_w(k+1,j,i) + &
1543	lad_s(k+1,j,i) ) * &
1544	( zw(k+1) - zu(k+1) ) ) + &
1545	( 0.5 * ( lad_w(k,j,i) + &
1546	lad_s(k+1,j,i) ) * &
1547	( zu(k+1) - zw(k) ) )
1548	ENDDO
1549	ENDDO
1550	ENDDO
1551
1552	!
1553	!-- Evaluation of the upward kinematic vertical heat flux within the
1554	!-- canopy
1555	DO i = nxlg, nxrg
1556	DO j = nysg, nyng
1557	DO k = 0, pch_index
1558	canopy_heat_flux(k,j,i) = cthf * &
1559	exp( -0.6 * lai(k,j,i) )
1560	ENDDO
1561	ENDDO
1562	ENDDO
1563
1564	!
1565	!-- The near surface heat flux is derived from the heat flux
1566	!-- distribution within the canopy
1567	shf(:,:) = canopy_heat_flux(0,:,:)
1568
1569	ENDIF
1570
1571	ENDIF
1572
1573	!
1574	!-- If required, initialize dvrp-software
1575	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
1576
1577	IF ( ocean ) THEN
1578	!
1579	!-- Initialize quantities needed for the ocean model
1580	CALL init_ocean
1581
1582	ELSE
1583	!
1584	!-- Initialize quantities for handling cloud physics
1585	!-- This routine must be called before lpm_init, because
1586	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1587	!-- lpm_init) is not defined.
1588	CALL init_cloud_physics
1589	ENDIF
1590
1591	!
1592	!-- If required, initialize particles
1593	IF ( particle_advection ) CALL lpm_init
1594
1595	!
1596	!-- Initialize the ws-scheme.
1597	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1598
1599	!
1600	!-- Setting weighting factors for calculation of perturbation pressure
1601	!-- and turbulent quantities from the RK substeps
1602	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1603
1604	weight_substep(1) = 1./6.
1605	weight_substep(2) = 3./10.
1606	weight_substep(3) = 8./15.
1607
1608	weight_pres(1) = 1./3.
1609	weight_pres(2) = 5./12.
1610	weight_pres(3) = 1./4.
1611
1612	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1613
1614	weight_substep(1) = 1./2.
1615	weight_substep(2) = 1./2.
1616
1617	weight_pres(1) = 1./2.
1618	weight_pres(2) = 1./2.
1619
1620	ELSE ! for Euler-method
1621
1622	weight_substep(1) = 1.0
1623	weight_pres(1) = 1.0
1624
1625	ENDIF
1626
1627	!
1628	!-- Initialize Rayleigh damping factors
1629	rdf = 0.0
1630	rdf_sc = 0.0
1631	IF ( rayleigh_damping_factor /= 0.0 ) THEN
1632	IF ( .NOT. ocean ) THEN
1633	DO k = nzb+1, nzt
1634	IF ( zu(k) >= rayleigh_damping_height ) THEN
1635	rdf(k) = rayleigh_damping_factor * &
1636	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
1637	/ ( zu(nzt) - rayleigh_damping_height ) )&
1638	)**2
1639	ENDIF
1640	ENDDO
1641	ELSE
1642	DO k = nzt, nzb+1, -1
1643	IF ( zu(k) <= rayleigh_damping_height ) THEN
1644	rdf(k) = rayleigh_damping_factor * &
1645	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
1646	/ ( rayleigh_damping_height - zu(nzb+1)))&
1647	)**2
1648	ENDIF
1649	ENDDO
1650	ENDIF
1651	ENDIF
1652	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1653
1654	!
1655	!-- Initialize the starting level and the vertical smoothing factor used for
1656	!-- the external pressure gradient
1657	dp_smooth_factor = 1.0
1658	IF ( dp_external ) THEN
1659	!
1660	!-- Set the starting level dp_level_ind_b only if it has not been set before
1661	!-- (e.g. in init_grid).
1662	IF ( dp_level_ind_b == 0 ) THEN
1663	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1664	dp_level_ind_b = ind_array(1) - 1 + nzb
1665	! MINLOC uses lower array bound 1
1666	ENDIF
1667	IF ( dp_smooth ) THEN
1668	dp_smooth_factor(:dp_level_ind_b) = 0.0
1669	DO k = dp_level_ind_b+1, nzt
1670	dp_smooth_factor(k) = 0.5 * ( 1.0 + SIN( pi * &
1671	( REAL( k - dp_level_ind_b ) / &
1672	REAL( nzt - dp_level_ind_b ) - 0.5 ) ) )
1673	ENDDO
1674	ENDIF
1675	ENDIF
1676
1677	!
1678	!-- Initialize damping zone for the potential temperature in case of
1679	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1680	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1681	ptdf_x = 0.0
1682	ptdf_y = 0.0
1683	IF ( bc_lr_dirrad ) THEN
1684	DO i = nxl, nxr
1685	IF ( ( i * dx ) < pt_damping_width ) THEN
1686	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5 * &
1687	REAL( pt_damping_width - i * dx ) / ( &
1688	REAL( pt_damping_width ) ) ) )**2
1689	ENDIF
1690	ENDDO
1691	ELSEIF ( bc_lr_raddir ) THEN
1692	DO i = nxl, nxr
1693	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1694	ptdf_x(i) = pt_damping_factor * &
1695	SIN( pi * 0.5 * ( ( i - nx ) * dx + pt_damping_width ) / &
1696	REAL( pt_damping_width ) )**2
1697	ENDIF
1698	ENDDO
1699	ELSEIF ( bc_ns_dirrad ) THEN
1700	DO j = nys, nyn
1701	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1702	ptdf_y(j) = pt_damping_factor * &
1703	SIN( pi * 0.5 * ( ( j - ny ) * dy + pt_damping_width ) / &
1704	REAL( pt_damping_width ) )**2
1705	ENDIF
1706	ENDDO
1707	ELSEIF ( bc_ns_raddir ) THEN
1708	DO j = nys, nyn
1709	IF ( ( j * dy ) < pt_damping_width ) THEN
1710	ptdf_y(j) = pt_damping_factor * &
1711	SIN( pi * 0.5 * ( pt_damping_width - j * dy ) / &
1712	REAL( pt_damping_width ) )**2
1713	ENDIF
1714	ENDDO
1715	ENDIF
1716
1717	!
1718	!-- Initialize local summation arrays for routine flow_statistics.
1719	!-- This is necessary because they may not yet have been initialized when they
1720	!-- are called from flow_statistics (or - depending on the chosen model run -
1721	!-- are never initialized)
1722	sums_divnew_l = 0.0
1723	sums_divold_l = 0.0
1724	sums_l_l = 0.0
1725	sums_up_fraction_l = 0.0
1726	sums_wsts_bc_l = 0.0
1727
1728	!
1729	!-- Pre-set masks for regional statistics. Default is the total model domain.
1730	!-- Ghost points are excluded because counting values at the ghost boundaries
1731	!-- would bias the statistics
1732	rmask = 1.0
1733	rmask(:,nxlg:nxl-1,:) = 0.0; rmask(:,nxr+1:nxrg,:) = 0.0
1734	rmask(nysg:nys-1,:,:) = 0.0; rmask(nyn+1:nyng,:,:) = 0.0
1735
1736	!
1737	!-- User-defined initializing actions. Check afterwards, if maximum number
1738	!-- of allowed timeseries is exceeded
1739	CALL user_init
1740
1741	IF ( dots_num > dots_max ) THEN
1742	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1743	' its maximum of dots_max = ', dots_max, &
1744	' &Please increase dots_max in modules.f90.'
1745	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1746	ENDIF
1747
1748	!
1749	!-- Input binary data file is not needed anymore. This line must be placed
1750	!-- after call of user_init!
1751	CALL close_file( 13 )
1752
1753	!
1754	!-- Compute total sum of active mask grid points
1755	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1756	!-- total domain
1757	!-- ngp_3d: number of grid points of the total domain
1758	ngp_2dh_outer_l = 0
1759	ngp_2dh_outer = 0
1760	ngp_2dh_s_inner_l = 0
1761	ngp_2dh_s_inner = 0
1762	ngp_2dh_l = 0
1763	ngp_2dh = 0
1764	ngp_3d_inner_l = 0.0
1765	ngp_3d_inner = 0
1766	ngp_3d = 0
1767	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1768
1769	DO sr = 0, statistic_regions
1770	DO i = nxl, nxr
1771	DO j = nys, nyn
1772	IF ( rmask(j,i,sr) == 1.0 ) THEN
1773	!
1774	!-- All xy-grid points
1775	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1776	!
1777	!-- xy-grid points above topography
1778	DO k = nzb_s_outer(j,i), nz + 1
1779	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1780	ENDDO
1781	DO k = nzb_s_inner(j,i), nz + 1
1782	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1783	ENDDO
1784	!
1785	!-- All grid points of the total domain above topography
1786	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1787	( nz - nzb_s_inner(j,i) + 2 )
1788	ENDIF
1789	ENDDO
1790	ENDDO
1791	ENDDO
1792
1793	sr = statistic_regions + 1
1794	#if defined( __parallel )
1795	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1796	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1797	comm2d, ierr )
1798	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1799	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1800	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1801	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1802	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1803	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1804	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1805	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1806	MPI_SUM, comm2d, ierr )
1807	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1808	#else
1809	ngp_2dh = ngp_2dh_l
1810	ngp_2dh_outer = ngp_2dh_outer_l
1811	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1812	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1813	#endif
1814
1815	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1816	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1817
1818	!
1819	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1820	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1821	!-- the respective subdomain lie below the surface topography
1822	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1823	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1824	ngp_3d_inner(:) )
1825	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1826
1827	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1828
1829
1830	END SUBROUTINE init_3d_model

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