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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1322

Last change on this file since 1322 was 1322, checked in by raasch, 10 years ago
REAL functions and a lot of REAL constants provided with KIND-attribute, some small bugfixes
Property svn:keywords set to `Id`
File size: 63.3 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	! REAL constants defined as wp-kind
23	! module interfaces removed
24	!
25	! Former revisions:
26	! -----------------
27	! $Id: init_3d_model.f90 1322 2014-03-20 16:38:49Z raasch $
28	!
29	! 1320 2014-03-20 08:40:49Z raasch
30	! ONLY-attribute added to USE-statements,
31	! kind-parameters added to all INTEGER and REAL declaration statements,
32	! kinds are defined in new module kinds,
33	! revision history before 2012 removed,
34	! comment fields (!:) to be used for variable explanations added to
35	! all variable declaration statements
36	!
37	! 1316 2014-03-17 07:44:59Z heinze
38	! Bugfix: allocation of w_subs
39	!
40	! 1299 2014-03-06 13:15:21Z heinze
41	! Allocate w_subs due to extension of large scale subsidence in combination
42	! with large scale forcing data (LSF_DATA)
43	!
44	! 1241 2013-10-30 11:36:58Z heinze
45	! Overwrite initial profiles in case of nudging
46	! Inititialize shf and qsws in case of large_scale_forcing
47	!
48	! 1221 2013-09-10 08:59:13Z raasch
49	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
50	! copy
51	!
52	! 1212 2013-08-15 08:46:27Z raasch
53	! array tri is allocated and included in data copy statement
54	!
55	! 1195 2013-07-01 12:27:57Z heinze
56	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
57	!
58	! 1179 2013-06-14 05:57:58Z raasch
59	! allocate and set ref_state to be used in buoyancy terms
60	!
61	! 1171 2013-05-30 11:27:45Z raasch
62	! diss array is allocated with full size if accelerator boards are used
63	!
64	! 1159 2013-05-21 11:58:22Z fricke
65	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
66	!
67	! 1153 2013-05-10 14:33:08Z raasch
68	! diss array is allocated with dummy elements even if it is not needed
69	! (required by PGI 13.4 / CUDA 5.0)
70	!
71	! 1115 2013-03-26 18:16:16Z hoffmann
72	! unused variables removed
73	!
74	! 1113 2013-03-10 02:48:14Z raasch
75	! openACC directive modified
76	!
77	! 1111 2013-03-08 23:54:10Z raasch
78	! openACC directives added for pres
79	! array diss allocated only if required
80	!
81	! 1092 2013-02-02 11:24:22Z raasch
82	! unused variables removed
83	!
84	! 1065 2012-11-22 17:42:36Z hoffmann
85	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
86	!
87	! 1053 2012-11-13 17:11:03Z hoffmann
88	! allocation and initialisation of necessary data arrays for the two-moment
89	! cloud physics scheme the two new prognostic equations (nr, qr):
90	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
91	! +tend_*, prr
92	!
93	! 1036 2012-10-22 13:43:42Z raasch
94	! code put under GPL (PALM 3.9)
95	!
96	! 1032 2012-10-21 13:03:21Z letzel
97	! save memory by not allocating pt_2 in case of neutral = .T.
98	!
99	! 1025 2012-10-07 16:04:41Z letzel
100	! bugfix: swap indices of mask for ghost boundaries
101	!
102	! 1015 2012-09-27 09:23:24Z raasch
103	! mask is set to zero for ghost boundaries
104	!
105	! 1010 2012-09-20 07:59:54Z raasch
106	! cpp switch __nopointer added for pointer free version
107	!
108	! 1003 2012-09-14 14:35:53Z raasch
109	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
110	!
111	! 1001 2012-09-13 14:08:46Z raasch
112	! all actions concerning leapfrog scheme removed
113	!
114	! 996 2012-09-07 10:41:47Z raasch
115	! little reformatting
116	!
117	! 978 2012-08-09 08:28:32Z fricke
118	! outflow damping layer removed
119	! roughness length for scalar quantites z0h added
120	! damping zone for the potential temperatur in case of non-cyclic lateral
121	! boundaries added
122	! initialization of ptdf_x, ptdf_y
123	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
124	!
125	! 849 2012-03-15 10:35:09Z raasch
126	! init_particles renamed lpm_init
127	!
128	! 825 2012-02-19 03:03:44Z raasch
129	! wang_collision_kernel renamed wang_kernel
130	!
131	! Revision 1.1 1998/03/09 16:22:22 raasch
132	! Initial revision
133	!
134	!
135	! Description:
136	! ------------
137	! Allocation of arrays and initialization of the 3D model via
138	! a) pre-run the 1D model
139	! or
140	! b) pre-set constant linear profiles
141	! or
142	! c) read values of a previous run
143	!------------------------------------------------------------------------------!
144
145	USE advec_ws
146
147	USE arrays_3d
148
149	USE cloud_parameters, &
150	ONLY: nc_const, precipitation_amount, precipitation_rate, prr
151
152	USE constants, &
153	ONLY: pi
154
155	USE control_parameters
156
157	USE grid_variables, &
158	ONLY: dx, dy
159
160	USE indices
161
162	USE kinds
163
164	USE ls_forcing_mod
165
166	USE model_1d, &
167	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
168
169	USE netcdf_control
170
171	USE particle_attributes, &
172	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
173
174	USE pegrid
175
176	USE random_function_mod
177
178	USE statistics, &
179	ONLY: hom, hom_sum, pr_palm, rmask, spectrum_x, spectrum_y, &
180	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
181	sums_l_l, sums_up_fraction_l, sums_wsts_bc_l, ts_value, &
182	weight_pres, weight_substep
183
184	USE transpose_indices
185
186	IMPLICIT NONE
187
188	INTEGER(iwp) :: i !:
189	INTEGER(iwp) :: ind_array(1) !:
190	INTEGER(iwp) :: j !:
191	INTEGER(iwp) :: k !:
192	INTEGER(iwp) :: sr !:
193
194	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !:
195
196	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !:
197	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !:
198
199	REAL(wp), DIMENSION(1:2) :: volume_flow_area_l !:
200	REAL(wp), DIMENSION(1:2) :: volume_flow_initial_l !:
201
202	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !:
203	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !:
204
205
206	!
207	!-- Allocate arrays
208	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
209	ngp_3d(0:statistic_regions), &
210	ngp_3d_inner(0:statistic_regions), &
211	ngp_3d_inner_l(0:statistic_regions), &
212	ngp_3d_inner_tmp(0:statistic_regions), &
213	sums_divnew_l(0:statistic_regions), &
214	sums_divold_l(0:statistic_regions) )
215	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
216	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
217	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
218	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
219	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
220	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
221	sums(nzb:nzt+1,pr_palm+max_pr_user), &
222	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
223	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
224	sums_up_fraction_l(10,3,0:statistic_regions), &
225	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
226	ts_value(dots_max,0:statistic_regions) )
227	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
228
229	ALLOCATE( rif(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
230	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
231	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
232	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
233	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
234	z0h(nysg:nyng,nxlg:nxrg) )
235
236	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
237	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
238	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
239	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
240	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
241
242	#if defined( __nopointer )
243	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
244	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
245	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
246	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
247	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
248	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
249	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
250	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
251	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
252	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
253	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
254	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
255	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
256	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
257	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
258	#else
259	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
260	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
261	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
262	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
263	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
264	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
265	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
266	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
267	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
268	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
269	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
270	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
271	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
272	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
273	IF ( .NOT. neutral ) THEN
274	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
275	ENDIF
276	#endif
277
278	!
279	!-- Following array is required for perturbation pressure within the iterative
280	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
281	!-- the weighted average of the substeps and cannot be used in the Poisson
282	!-- solver.
283	IF ( psolver == 'sor' ) THEN
284	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
285	ELSEIF ( psolver == 'multigrid' ) THEN
286	!
287	!-- For performance reasons, multigrid is using one ghost layer only
288	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
289	ENDIF
290
291	!
292	!-- Array for storing constant coeffficients of the tridiagonal solver
293	IF ( psolver == 'poisfft' ) THEN
294	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
295	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
296	ENDIF
297
298	IF ( humidity .OR. passive_scalar ) THEN
299	!
300	!-- 2D-humidity/scalar arrays
301	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
302	qsws(nysg:nyng,nxlg:nxrg), &
303	qswst(nysg:nyng,nxlg:nxrg) )
304
305	!
306	!-- 3D-humidity/scalar arrays
307	#if defined( __nopointer )
308	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
309	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
310	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
311	#else
312	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
313	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
314	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
315	#endif
316
317	!
318	!-- 3D-arrays needed for humidity only
319	IF ( humidity ) THEN
320	#if defined( __nopointer )
321	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
322	#else
323	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
324	#endif
325
326	IF ( cloud_physics ) THEN
327
328	!
329	!-- Liquid water content
330	#if defined( __nopointer )
331	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
332	#else
333	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
334	#endif
335	!
336	!-- Precipitation amount and rate (only needed if output is switched)
337	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
338	precipitation_rate(nysg:nyng,nxlg:nxrg) )
339
340	IF ( icloud_scheme == 0 ) THEN
341	!
342	!-- 1D-arrays
343	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
344	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
345	!
346	!-- 3D-cloud water content
347	#if defined( __nopointer )
348	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
349	#else
350	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
351	#endif
352	!
353	!-- 3D-tendency arrays
354	ALLOCATE( tend_pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
355	tend_q(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
356
357	IF ( precipitation ) THEN
358	!
359	!-- 1D-arrays
360	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
361	!
362	!
363	!-- 3D-tendency arrays
364	ALLOCATE( tend_nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
365	tend_qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
366	!
367	!-- 2D-rain water content and rain drop concentration arrays
368	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
369	qrsws(nysg:nyng,nxlg:nxrg), &
370	qrswst(nysg:nyng,nxlg:nxrg), &
371	nrs(nysg:nyng,nxlg:nxrg), &
372	nrsws(nysg:nyng,nxlg:nxrg), &
373	nrswst(nysg:nyng,nxlg:nxrg) )
374	!
375	!-- 3D-rain water content, rain drop concentration arrays
376	#if defined( __nopointer )
377	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
378	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
379	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
380	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
381	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
382	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
383	#else
384	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
385	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
386	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
387	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
388	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
389	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
390	#endif
391	!
392	!-- 3d-precipitation rate
393	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
394	ENDIF
395
396	ENDIF
397	ENDIF
398
399	IF ( cloud_droplets ) THEN
400	!
401	!-- Liquid water content, change in liquid water content
402	#if defined( __nopointer )
403	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
404	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
405	#else
406	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
407	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
408	#endif
409	!
410	!-- Real volume of particles (with weighting), volume of particles
411	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
412	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
413	ENDIF
414
415	ENDIF
416
417	ENDIF
418
419	IF ( ocean ) THEN
420	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
421	saswst(nysg:nyng,nxlg:nxrg) )
422	#if defined( __nopointer )
423	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
424	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
425	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
426	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
427	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
428	#else
429	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
430	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
431	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
432	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
433	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
434	prho => prho_1
435	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
436	! density to be apointer
437	#endif
438	IF ( humidity_remote ) THEN
439	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
440	qswst_remote = 0.0
441	ENDIF
442	ENDIF
443
444	!
445	!-- 3D-array for storing the dissipation, needed for calculating the sgs
446	!-- particle velocities
447	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence .OR. &
448	num_acc_per_node > 0 ) THEN
449	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
450	ENDIF
451
452	IF ( dt_dosp /= 9999999.9 ) THEN
453	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
454	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
455	spectrum_x = 0.0
456	spectrum_y = 0.0
457	ENDIF
458
459	!
460	!-- 1D-array for large scale subsidence velocity
461	ALLOCATE ( w_subs(nzb:nzt+1) )
462	w_subs = 0.0
463
464
465	!
466	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
467	IF ( plant_canopy ) THEN
468	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
469	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
470	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
471	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
472	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
473
474	IF ( passive_scalar ) THEN
475	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
476	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
477	ENDIF
478
479	IF ( cthf /= 0.0 ) THEN
480	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
481	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
482	ENDIF
483
484	ENDIF
485
486	!
487	!-- 4D-array for storing the Rif-values at vertical walls
488	IF ( topography /= 'flat' ) THEN
489	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
490	rif_wall = 0.0
491	ENDIF
492
493	!
494	!-- Arrays to store velocity data from t-dt and the phase speeds which
495	!-- are needed for radiation boundary conditions
496	IF ( outflow_l ) THEN
497	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
498	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
499	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
500	ENDIF
501	IF ( outflow_r ) THEN
502	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
503	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
504	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
505	ENDIF
506	IF ( outflow_l .OR. outflow_r ) THEN
507	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
508	c_w(nzb:nzt+1,nysg:nyng) )
509	ENDIF
510	IF ( outflow_s ) THEN
511	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
512	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
513	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
514	ENDIF
515	IF ( outflow_n ) THEN
516	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
517	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
518	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
519	ENDIF
520	IF ( outflow_s .OR. outflow_n ) THEN
521	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
522	c_w(nzb:nzt+1,nxlg:nxrg) )
523	ENDIF
524	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
525	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
526	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
527	ENDIF
528
529
530	#if ! defined( __nopointer )
531	!
532	!-- Initial assignment of the pointers
533	e => e_1; e_p => e_2; te_m => e_3
534	IF ( .NOT. neutral ) THEN
535	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
536	ELSE
537	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
538	ENDIF
539	u => u_1; u_p => u_2; tu_m => u_3
540	v => v_1; v_p => v_2; tv_m => v_3
541	w => w_1; w_p => w_2; tw_m => w_3
542
543	IF ( humidity .OR. passive_scalar ) THEN
544	q => q_1; q_p => q_2; tq_m => q_3
545	IF ( humidity ) THEN
546	vpt => vpt_1
547	IF ( cloud_physics ) THEN
548	ql => ql_1
549	IF ( icloud_scheme == 0 ) THEN
550	qc => qc_1
551	IF ( precipitation ) THEN
552	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
553	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
554	ENDIF
555	ENDIF
556	ENDIF
557	ENDIF
558	IF ( cloud_droplets ) THEN
559	ql => ql_1
560	ql_c => ql_2
561	ENDIF
562	ENDIF
563
564	IF ( ocean ) THEN
565	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
566	ENDIF
567	#endif
568
569	!
570	!-- Allocate arrays containing the RK coefficient for calculation of
571	!-- perturbation pressure and turbulent fluxes. At this point values are
572	!-- set for pressure calculation during initialization (where no timestep
573	!-- is done). Further below the values needed within the timestep scheme
574	!-- will be set.
575	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
576	weight_pres(1:intermediate_timestep_count_max) )
577	weight_substep = 1.0
578	weight_pres = 1.0
579	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
580
581	!
582	!-- Initialize model variables
583	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
584	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
585	!
586	!-- First model run of a possible job queue.
587	!-- Initial profiles of the variables must be computes.
588	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
589	!
590	!-- Use solutions of the 1D model as initial profiles,
591	!-- start 1D model
592	CALL init_1d_model
593	!
594	!-- Transfer initial profiles to the arrays of the 3D model
595	DO i = nxlg, nxrg
596	DO j = nysg, nyng
597	e(:,j,i) = e1d
598	kh(:,j,i) = kh1d
599	km(:,j,i) = km1d
600	pt(:,j,i) = pt_init
601	u(:,j,i) = u1d
602	v(:,j,i) = v1d
603	ENDDO
604	ENDDO
605
606	IF ( humidity .OR. passive_scalar ) THEN
607	DO i = nxlg, nxrg
608	DO j = nysg, nyng
609	q(:,j,i) = q_init
610	ENDDO
611	ENDDO
612	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
613	precipitation ) THEN
614	DO i = nxlg, nxrg
615	DO j = nysg, nyng
616	qr(:,j,i) = 0.0
617	nr(:,j,i) = 0.0
618	ENDDO
619	ENDDO
620	!
621	!-- Initialze nc_1d with default value
622	nc_1d(:) = nc_const
623
624	ENDIF
625	ENDIF
626
627	IF ( .NOT. constant_diffusion ) THEN
628	DO i = nxlg, nxrg
629	DO j = nysg, nyng
630	e(:,j,i) = e1d
631	ENDDO
632	ENDDO
633	!
634	!-- Store initial profiles for output purposes etc.
635	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
636
637	IF ( prandtl_layer ) THEN
638	rif = rif1d(nzb+1)
639	ts = 0.0 ! could actually be computed more accurately in the
640	! 1D model. Update when opportunity arises.
641	us = us1d
642	usws = usws1d
643	vsws = vsws1d
644	ELSE
645	ts = 0.0 ! must be set, because used in
646	rif = 0.0 ! flowste
647	us = 0.0
648	usws = 0.0
649	vsws = 0.0
650	ENDIF
651
652	ELSE
653	e = 0.0 ! must be set, because used in
654	rif = 0.0 ! flowste
655	ts = 0.0
656	us = 0.0
657	usws = 0.0
658	vsws = 0.0
659	ENDIF
660	uswst = top_momentumflux_u
661	vswst = top_momentumflux_v
662
663	!
664	!-- In every case qs = 0.0 (see also pt)
665	!-- This could actually be computed more accurately in the 1D model.
666	!-- Update when opportunity arises!
667	IF ( humidity .OR. passive_scalar ) THEN
668	qs = 0.0
669	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
670	precipitation ) THEN
671	qrs = 0.0
672	nrs = 0.0
673	ENDIF
674	ENDIF
675
676	!
677	!-- inside buildings set velocities back to zero
678	IF ( topography /= 'flat' ) THEN
679	DO i = nxl-1, nxr+1
680	DO j = nys-1, nyn+1
681	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
682	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
683	ENDDO
684	ENDDO
685
686	!
687	!-- WARNING: The extra boundary conditions set after running the
688	!-- ------- 1D model impose an error on the divergence one layer
689	!-- below the topography; need to correct later
690	!-- ATTENTION: Provisional correction for Piacsek & Williams
691	!-- --------- advection scheme: keep u and v zero one layer below
692	!-- the topography.
693	IF ( ibc_uv_b == 1 ) THEN
694	!
695	!-- Neumann condition
696	DO i = nxl-1, nxr+1
697	DO j = nys-1, nyn+1
698	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
699	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
700	ENDDO
701	ENDDO
702
703	ENDIF
704
705	ENDIF
706
707	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
708	THEN
709
710	!
711	!-- Overwrite initial profiles in case of nudging
712	IF ( nudging ) THEN
713	pt_init = ptnudge(:,1)
714	u_init = unudge(:,1)
715	v_init = vnudge(:,1)
716	IF ( humidity .OR. passive_scalar ) THEN
717	q_init = qnudge(:,1)
718	ENDIF
719
720	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
721	'scalars from NUDGING_DATA are used.'
722	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
723	ENDIF
724
725	!
726	!-- Use constructed initial profiles (velocity constant with height,
727	!-- temperature profile with constant gradient)
728	DO i = nxlg, nxrg
729	DO j = nysg, nyng
730	pt(:,j,i) = pt_init
731	u(:,j,i) = u_init
732	v(:,j,i) = v_init
733	ENDDO
734	ENDDO
735
736	!
737	!-- Set initial horizontal velocities at the lowest computational grid
738	!-- levels to zero in order to avoid too small time steps caused by the
739	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
740	!-- in the limiting formula!). The original values are stored to be later
741	!-- used for volume flow control.
742	DO i = nxlg, nxrg
743	DO j = nysg, nyng
744	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
745	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
746	ENDDO
747	ENDDO
748
749	IF ( humidity .OR. passive_scalar ) THEN
750	DO i = nxlg, nxrg
751	DO j = nysg, nyng
752	q(:,j,i) = q_init
753	ENDDO
754	ENDDO
755	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
756	!
757	!-- Initialze nc_1d with default value
758	nc_1d(:) = nc_const
759
760	IF ( precipitation ) THEN
761	DO i = nxlg, nxrg
762	DO j = nysg, nyng
763	qr(:,j,i) = 0.0
764	nr(:,j,i) = 0.0
765	ENDDO
766	ENDDO
767	ENDIF
768
769	ENDIF
770	ENDIF
771
772	IF ( ocean ) THEN
773	DO i = nxlg, nxrg
774	DO j = nysg, nyng
775	sa(:,j,i) = sa_init
776	ENDDO
777	ENDDO
778	ENDIF
779
780	IF ( constant_diffusion ) THEN
781	km = km_constant
782	kh = km / prandtl_number
783	e = 0.0
784	ELSEIF ( e_init > 0.0 ) THEN
785	DO k = nzb+1, nzt
786	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
787	ENDDO
788	km(nzb,:,:) = km(nzb+1,:,:)
789	km(nzt+1,:,:) = km(nzt,:,:)
790	kh = km / prandtl_number
791	e = e_init
792	ELSE
793	IF ( .NOT. ocean ) THEN
794	kh = 0.01 ! there must exist an initial diffusion, because
795	km = 0.01 ! otherwise no TKE would be produced by the
796	! production terms, as long as not yet
797	! e = (u/cm)*2 at k=nzb+1
798	ELSE
799	kh = 0.00001
800	km = 0.00001
801	ENDIF
802	e = 0.0
803	ENDIF
804	rif = 0.0
805	ts = 0.0
806	us = 0.0
807	usws = 0.0
808	uswst = top_momentumflux_u
809	vsws = 0.0
810	vswst = top_momentumflux_v
811	IF ( humidity .OR. passive_scalar ) qs = 0.0
812
813	!
814	!-- Compute initial temperature field and other constants used in case
815	!-- of a sloping surface
816	IF ( sloping_surface ) CALL init_slope
817
818	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
819	THEN
820	!
821	!-- Initialization will completely be done by the user
822	CALL user_init_3d_model
823
824	ENDIF
825	!
826	!-- Bottom boundary
827	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
828	u(nzb,:,:) = 0.0
829	v(nzb,:,:) = 0.0
830	ENDIF
831
832	!
833	!-- Apply channel flow boundary condition
834	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
835	u(nzt+1,:,:) = 0.0
836	v(nzt+1,:,:) = 0.0
837	ENDIF
838
839	!
840	!-- Calculate virtual potential temperature
841	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
842
843	!
844	!-- Store initial profiles for output purposes etc.
845	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
846	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
847	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
848	hom(nzb,1,5,:) = 0.0
849	hom(nzb,1,6,:) = 0.0
850	ENDIF
851	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
852	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
853	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
854
855	IF ( ocean ) THEN
856	!
857	!-- Store initial salinity profile
858	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
859	ENDIF
860
861	IF ( humidity ) THEN
862	!
863	!-- Store initial profile of total water content, virtual potential
864	!-- temperature
865	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
866	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
867	IF ( cloud_physics .OR. cloud_droplets ) THEN
868	!
869	!-- Store initial profile of specific humidity and potential
870	!-- temperature
871	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
872	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
873	ENDIF
874	ENDIF
875
876	IF ( passive_scalar ) THEN
877	!
878	!-- Store initial scalar profile
879	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
880	ENDIF
881
882	!
883	!-- Initialize fluxes at bottom surface
884	IF ( use_surface_fluxes ) THEN
885
886	IF ( constant_heatflux ) THEN
887	!
888	!-- Heat flux is prescribed
889	IF ( random_heatflux ) THEN
890	CALL disturb_heatflux
891	ELSE
892	shf = surface_heatflux
893	!
894	!-- Initialize shf with data from external file LSF_DATA
895	IF ( large_scale_forcing .AND. lsf_surf ) THEN
896	CALL ls_forcing_surf ( simulated_time )
897	ENDIF
898
899	!
900	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
901	IF ( TRIM( topography ) /= 'flat' ) THEN
902	DO i = nxlg, nxrg
903	DO j = nysg, nyng
904	IF ( nzb_s_inner(j,i) /= 0 ) THEN
905	shf(j,i) = wall_heatflux(0)
906	ENDIF
907	ENDDO
908	ENDDO
909	ENDIF
910	ENDIF
911	ENDIF
912
913	!
914	!-- Determine the near-surface water flux
915	IF ( humidity .OR. passive_scalar ) THEN
916	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
917	precipitation ) THEN
918	qrsws = 0.0
919	nrsws = 0.0
920	ENDIF
921	IF ( constant_waterflux ) THEN
922	qsws = surface_waterflux
923	!
924	!-- Over topography surface_waterflux is replaced by
925	!-- wall_humidityflux(0)
926	IF ( TRIM( topography ) /= 'flat' ) THEN
927	wall_qflux = wall_humidityflux
928	DO i = nxlg, nxrg
929	DO j = nysg, nyng
930	IF ( nzb_s_inner(j,i) /= 0 ) THEN
931	qsws(j,i) = wall_qflux(0)
932	ENDIF
933	ENDDO
934	ENDDO
935	ENDIF
936	ENDIF
937	ENDIF
938
939	ENDIF
940
941	!
942	!-- Initialize fluxes at top surface
943	!-- Currently, only the heatflux and salinity flux can be prescribed.
944	!-- The latent flux is zero in this case!
945	IF ( use_top_fluxes ) THEN
946
947	IF ( constant_top_heatflux ) THEN
948	!
949	!-- Heat flux is prescribed
950	tswst = top_heatflux
951
952	IF ( humidity .OR. passive_scalar ) THEN
953	qswst = 0.0
954	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
955	precipitation ) THEN
956	nrswst = 0.0
957	qrswst = 0.0
958	ENDIF
959	ENDIF
960
961	IF ( ocean ) THEN
962	saswsb = bottom_salinityflux
963	saswst = top_salinityflux
964	ENDIF
965	ENDIF
966
967	!
968	!-- Initialization in case of a coupled model run
969	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
970	tswst = 0.0
971	ENDIF
972
973	ENDIF
974
975	!
976	!-- Initialize Prandtl layer quantities
977	IF ( prandtl_layer ) THEN
978
979	z0 = roughness_length
980	z0h = z0h_factor * z0
981
982	IF ( .NOT. constant_heatflux ) THEN
983	!
984	!-- Surface temperature is prescribed. Here the heat flux cannot be
985	!-- simply estimated, because therefore rif, u* and theta* would have
986	!-- to be computed by iteration. This is why the heat flux is assumed
987	!-- to be zero before the first time step. It approaches its correct
988	!-- value in the course of the first few time steps.
989	shf = 0.0
990	ENDIF
991
992	IF ( humidity .OR. passive_scalar ) THEN
993	IF ( .NOT. constant_waterflux ) qsws = 0.0
994	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
995	precipitation ) THEN
996	qrsws = 0.0
997	nrsws = 0.0
998	ENDIF
999	ENDIF
1000
1001	ENDIF
1002
1003	!
1004	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1005	!-- the reference state will be set (overwritten) in init_ocean)
1006	IF ( use_single_reference_value ) THEN
1007	IF ( .NOT. humidity ) THEN
1008	ref_state(:) = pt_reference
1009	ELSE
1010	ref_state(:) = vpt_reference
1011	ENDIF
1012	ELSE
1013	IF ( .NOT. humidity ) THEN
1014	ref_state(:) = pt_init(:)
1015	ELSE
1016	ref_state(:) = vpt(:,nys,nxl)
1017	ENDIF
1018	ENDIF
1019
1020	!
1021	!-- For the moment, vertical velocity is zero
1022	w = 0.0
1023
1024	!
1025	!-- Initialize array sums (must be defined in first call of pres)
1026	sums = 0.0
1027
1028	!
1029	!-- In case of iterative solvers, p must get an initial value
1030	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0
1031
1032	!
1033	!-- Treating cloud physics, liquid water content and precipitation amount
1034	!-- are zero at beginning of the simulation
1035	IF ( cloud_physics ) THEN
1036	ql = 0.0
1037	IF ( precipitation ) precipitation_amount = 0.0
1038	IF ( icloud_scheme == 0 ) THEN
1039	qc = 0.0
1040	nc_1d = nc_const
1041	ENDIF
1042	ENDIF
1043	!
1044	!-- Impose vortex with vertical axis on the initial velocity profile
1045	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1046	CALL init_rankine
1047	ENDIF
1048
1049	!
1050	!-- Impose temperature anomaly (advection test only)
1051	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1052	CALL init_pt_anomaly
1053	ENDIF
1054
1055	!
1056	!-- If required, change the surface temperature at the start of the 3D run
1057	IF ( pt_surface_initial_change /= 0.0 ) THEN
1058	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1059	ENDIF
1060
1061	!
1062	!-- If required, change the surface humidity/scalar at the start of the 3D
1063	!-- run
1064	IF ( ( humidity .OR. passive_scalar ) .AND. &
1065	q_surface_initial_change /= 0.0 ) THEN
1066	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1067	ENDIF
1068	!
1069	!-- Initialize the random number generator (from numerical recipes)
1070	CALL random_function_ini
1071
1072	!
1073	!-- Initialize old and new time levels.
1074	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1075	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1076
1077	IF ( humidity .OR. passive_scalar ) THEN
1078	tq_m = 0.0
1079	q_p = q
1080	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1081	precipitation ) THEN
1082	tqr_m = 0.0
1083	qr_p = qr
1084	tnr_m = 0.0
1085	nr_p = nr
1086	ENDIF
1087	ENDIF
1088
1089	IF ( ocean ) THEN
1090	tsa_m = 0.0
1091	sa_p = sa
1092	ENDIF
1093
1094
1095	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1096	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1097	THEN
1098	!
1099	!-- When reading data for cyclic fill of 3D prerun data files, read
1100	!-- some of the global variables from the restart file which are required
1101	!-- for initializing the inflow
1102	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1103
1104	DO i = 0, io_blocks-1
1105	IF ( i == io_group ) THEN
1106	CALL read_parts_of_var_list
1107	CALL close_file( 13 )
1108	ENDIF
1109	#if defined( __parallel )
1110	CALL MPI_BARRIER( comm2d, ierr )
1111	#endif
1112	ENDDO
1113
1114	ENDIF
1115
1116	!
1117	!-- Read binary data from restart file
1118	DO i = 0, io_blocks-1
1119	IF ( i == io_group ) THEN
1120	CALL read_3d_binary
1121	ENDIF
1122	#if defined( __parallel )
1123	CALL MPI_BARRIER( comm2d, ierr )
1124	#endif
1125	ENDDO
1126
1127	!
1128	!-- Initialization of the turbulence recycling method
1129	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1130	turbulent_inflow ) THEN
1131	!
1132	!-- First store the profiles to be used at the inflow.
1133	!-- These profiles are the (temporally) and horizontally averaged vertical
1134	!-- profiles from the prerun. Alternatively, prescribed profiles
1135	!-- for u,v-components can be used.
1136	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
1137
1138	IF ( use_prescribed_profile_data ) THEN
1139	mean_inflow_profiles(:,1) = u_init ! u
1140	mean_inflow_profiles(:,2) = v_init ! v
1141	ELSE
1142	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1143	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1144	ENDIF
1145	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1146	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1147
1148	!
1149	!-- If necessary, adjust the horizontal flow field to the prescribed
1150	!-- profiles
1151	IF ( use_prescribed_profile_data ) THEN
1152	DO i = nxlg, nxrg
1153	DO j = nysg, nyng
1154	DO k = nzb, nzt+1
1155	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1156	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1157	ENDDO
1158	ENDDO
1159	ENDDO
1160	ENDIF
1161
1162	!
1163	!-- Use these mean profiles at the inflow (provided that Dirichlet
1164	!-- conditions are used)
1165	IF ( inflow_l ) THEN
1166	DO j = nysg, nyng
1167	DO k = nzb, nzt+1
1168	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1169	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1170	w(k,j,nxlg:-1) = 0.0
1171	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1172	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1173	ENDDO
1174	ENDDO
1175	ENDIF
1176
1177	!
1178	!-- Calculate the damping factors to be used at the inflow. For a
1179	!-- turbulent inflow the turbulent fluctuations have to be limited
1180	!-- vertically because otherwise the turbulent inflow layer will grow
1181	!-- in time.
1182	IF ( inflow_damping_height == 9999999.9 ) THEN
1183	!
1184	!-- Default: use the inversion height calculated by the prerun; if
1185	!-- this is zero, inflow_damping_height must be explicitly
1186	!-- specified.
1187	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0 ) THEN
1188	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1189	ELSE
1190	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1191	'explicitly specified because&the inversion height ', &
1192	'calculated by the prerun is zero.'
1193	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1194	ENDIF
1195
1196	ENDIF
1197
1198	IF ( inflow_damping_width == 9999999.9 ) THEN
1199	!
1200	!-- Default for the transition range: one tenth of the undamped
1201	!-- layer
1202	inflow_damping_width = 0.1 * inflow_damping_height
1203
1204	ENDIF
1205
1206	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1207
1208	DO k = nzb, nzt+1
1209
1210	IF ( zu(k) <= inflow_damping_height ) THEN
1211	inflow_damping_factor(k) = 1.0
1212	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1213	inflow_damping_factor(k) = 1.0 - &
1214	( zu(k) - inflow_damping_height ) / &
1215	inflow_damping_width
1216	ELSE
1217	inflow_damping_factor(k) = 0.0
1218	ENDIF
1219
1220	ENDDO
1221
1222	ENDIF
1223
1224	!
1225	!-- Inside buildings set velocities and TKE back to zero
1226	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1227	topography /= 'flat' ) THEN
1228	!
1229	!-- Inside buildings set velocities and TKE back to zero.
1230	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1231	!-- maybe revise later.
1232	DO i = nxlg, nxrg
1233	DO j = nysg, nyng
1234	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1235	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1236	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1237	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1238	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1239	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1240	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1241	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1242	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1243	ENDDO
1244	ENDDO
1245
1246	ENDIF
1247
1248	!
1249	!-- Calculate initial temperature field and other constants used in case
1250	!-- of a sloping surface
1251	IF ( sloping_surface ) CALL init_slope
1252
1253	!
1254	!-- Initialize new time levels (only done in order to set boundary values
1255	!-- including ghost points)
1256	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1257	IF ( humidity .OR. passive_scalar ) THEN
1258	q_p = q
1259	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1260	precipitation ) THEN
1261	qr_p = qr
1262	nr_p = nr
1263	ENDIF
1264	ENDIF
1265	IF ( ocean ) sa_p = sa
1266
1267	!
1268	!-- Allthough tendency arrays are set in prognostic_equations, they have
1269	!-- have to be predefined here because they are used (but multiplied with 0)
1270	!-- there before they are set.
1271	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1272	IF ( humidity .OR. passive_scalar ) THEN
1273	tq_m = 0.0
1274	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1275	precipitation ) THEN
1276	tqr_m = 0.0
1277	tnr_m = 0.0
1278	ENDIF
1279	ENDIF
1280	IF ( ocean ) tsa_m = 0.0
1281
1282	ELSE
1283	!
1284	!-- Actually this part of the programm should not be reached
1285	message_string = 'unknown initializing problem'
1286	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1287	ENDIF
1288
1289
1290	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1291	!
1292	!-- Initialize old timelevels needed for radiation boundary conditions
1293	IF ( outflow_l ) THEN
1294	u_m_l(:,:,:) = u(:,:,1:2)
1295	v_m_l(:,:,:) = v(:,:,0:1)
1296	w_m_l(:,:,:) = w(:,:,0:1)
1297	ENDIF
1298	IF ( outflow_r ) THEN
1299	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1300	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1301	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1302	ENDIF
1303	IF ( outflow_s ) THEN
1304	u_m_s(:,:,:) = u(:,0:1,:)
1305	v_m_s(:,:,:) = v(:,1:2,:)
1306	w_m_s(:,:,:) = w(:,0:1,:)
1307	ENDIF
1308	IF ( outflow_n ) THEN
1309	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1310	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1311	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1312	ENDIF
1313
1314	ENDIF
1315
1316	!
1317	!-- Calculate the initial volume flow at the right and north boundary
1318	IF ( conserve_volume_flow ) THEN
1319
1320	IF ( use_prescribed_profile_data ) THEN
1321
1322	volume_flow_initial_l = 0.0
1323	volume_flow_area_l = 0.0
1324
1325	IF ( nxr == nx ) THEN
1326	DO j = nys, nyn
1327	DO k = nzb_2d(j,nx)+1, nzt
1328	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1329	u_init(k) * dzw(k)
1330	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1331	ENDDO
1332	ENDDO
1333	ENDIF
1334
1335	IF ( nyn == ny ) THEN
1336	DO i = nxl, nxr
1337	DO k = nzb_2d(ny,i)+1, nzt
1338	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1339	v_init(k) * dzw(k)
1340	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1341	ENDDO
1342	ENDDO
1343	ENDIF
1344
1345	#if defined( __parallel )
1346	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1347	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1348	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1349	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1350
1351	#else
1352	volume_flow_initial = volume_flow_initial_l
1353	volume_flow_area = volume_flow_area_l
1354	#endif
1355
1356	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1357
1358	volume_flow_initial_l = 0.0
1359	volume_flow_area_l = 0.0
1360
1361	IF ( nxr == nx ) THEN
1362	DO j = nys, nyn
1363	DO k = nzb_2d(j,nx)+1, nzt
1364	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1365	hom_sum(k,1,0) * dzw(k)
1366	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1367	ENDDO
1368	ENDDO
1369	ENDIF
1370
1371	IF ( nyn == ny ) THEN
1372	DO i = nxl, nxr
1373	DO k = nzb_2d(ny,i)+1, nzt
1374	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1375	hom_sum(k,2,0) * dzw(k)
1376	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1377	ENDDO
1378	ENDDO
1379	ENDIF
1380
1381	#if defined( __parallel )
1382	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1383	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1384	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1385	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1386
1387	#else
1388	volume_flow_initial = volume_flow_initial_l
1389	volume_flow_area = volume_flow_area_l
1390	#endif
1391
1392	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1393
1394	volume_flow_initial_l = 0.0
1395	volume_flow_area_l = 0.0
1396
1397	IF ( nxr == nx ) THEN
1398	DO j = nys, nyn
1399	DO k = nzb_2d(j,nx)+1, nzt
1400	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1401	u(k,j,nx) * dzw(k)
1402	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1403	ENDDO
1404	ENDDO
1405	ENDIF
1406
1407	IF ( nyn == ny ) THEN
1408	DO i = nxl, nxr
1409	DO k = nzb_2d(ny,i)+1, nzt
1410	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1411	v(k,ny,i) * dzw(k)
1412	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1413	ENDDO
1414	ENDDO
1415	ENDIF
1416
1417	#if defined( __parallel )
1418	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1419	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1420	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1421	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1422
1423	#else
1424	volume_flow_initial = volume_flow_initial_l
1425	volume_flow_area = volume_flow_area_l
1426	#endif
1427
1428	ENDIF
1429
1430	!
1431	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1432	!-- from u\|v_bulk instead
1433	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1434	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1435	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1436	ENDIF
1437
1438	ENDIF
1439
1440	!
1441	!-- Initialize quantities for special advections schemes
1442	CALL init_advec
1443
1444	!
1445	!-- Impose random perturbation on the horizontal velocity field and then
1446	!-- remove the divergences from the velocity field at the initial stage
1447	IF ( create_disturbances .AND. &
1448	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1449	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1450
1451	CALL disturb_field( nzb_u_inner, tend, u )
1452	CALL disturb_field( nzb_v_inner, tend, v )
1453	n_sor = nsor_ini
1454	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1455	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1456	!$acc copyin( weight_pres, weight_substep ) &
1457	!$acc copy( tri, tric, u, v, w )
1458	CALL pres
1459	!$acc end data
1460	n_sor = nsor
1461	ENDIF
1462
1463	!
1464	!-- Initialization of the leaf area density
1465	IF ( plant_canopy ) THEN
1466
1467	SELECT CASE ( TRIM( canopy_mode ) )
1468
1469	CASE( 'block' )
1470
1471	DO i = nxlg, nxrg
1472	DO j = nysg, nyng
1473	lad_s(:,j,i) = lad(:)
1474	cdc(:,j,i) = drag_coefficient
1475	IF ( passive_scalar ) THEN
1476	sls(:,j,i) = leaf_surface_concentration
1477	sec(:,j,i) = scalar_exchange_coefficient
1478	ENDIF
1479	ENDDO
1480	ENDDO
1481
1482	CASE DEFAULT
1483
1484	!
1485	!-- The DEFAULT case is reached either if the parameter
1486	!-- canopy mode contains a wrong character string or if the
1487	!-- user has coded a special case in the user interface.
1488	!-- There, the subroutine user_init_plant_canopy checks
1489	!-- which of these two conditions applies.
1490	CALL user_init_plant_canopy
1491
1492	END SELECT
1493
1494	CALL exchange_horiz( lad_s, nbgp )
1495	CALL exchange_horiz( cdc, nbgp )
1496
1497	IF ( passive_scalar ) THEN
1498	CALL exchange_horiz( sls, nbgp )
1499	CALL exchange_horiz( sec, nbgp )
1500	ENDIF
1501
1502	!
1503	!-- Sharp boundaries of the plant canopy in horizontal directions
1504	!-- In vertical direction the interpolation is retained, as the leaf
1505	!-- area density is initialised by prescribing a vertical profile
1506	!-- consisting of piecewise linear segments. The upper boundary
1507	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1508
1509	DO i = nxl, nxr
1510	DO j = nys, nyn
1511	DO k = nzb, nzt+1
1512	IF ( lad_s(k,j,i) > 0.0 ) THEN
1513	lad_u(k,j,i) = lad_s(k,j,i)
1514	lad_u(k,j,i+1) = lad_s(k,j,i)
1515	lad_v(k,j,i) = lad_s(k,j,i)
1516	lad_v(k,j+1,i) = lad_s(k,j,i)
1517	ENDIF
1518	ENDDO
1519	DO k = nzb, nzt
1520	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1521	ENDDO
1522	ENDDO
1523	ENDDO
1524
1525	lad_w(pch_index,:,:) = 0.0
1526	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1527
1528	CALL exchange_horiz( lad_u, nbgp )
1529	CALL exchange_horiz( lad_v, nbgp )
1530	CALL exchange_horiz( lad_w, nbgp )
1531
1532	!
1533	!-- Initialisation of the canopy heat source distribution
1534	IF ( cthf /= 0.0 ) THEN
1535	!
1536	!-- Piecewise evaluation of the leaf area index by
1537	!-- integration of the leaf area density
1538	lai(:,:,:) = 0.0
1539	DO i = nxlg, nxrg
1540	DO j = nysg, nyng
1541	DO k = pch_index-1, 0, -1
1542	lai(k,j,i) = lai(k+1,j,i) + &
1543	( 0.5 * ( lad_w(k+1,j,i) + &
1544	lad_s(k+1,j,i) ) * &
1545	( zw(k+1) - zu(k+1) ) ) + &
1546	( 0.5 * ( lad_w(k,j,i) + &
1547	lad_s(k+1,j,i) ) * &
1548	( zu(k+1) - zw(k) ) )
1549	ENDDO
1550	ENDDO
1551	ENDDO
1552
1553	!
1554	!-- Evaluation of the upward kinematic vertical heat flux within the
1555	!-- canopy
1556	DO i = nxlg, nxrg
1557	DO j = nysg, nyng
1558	DO k = 0, pch_index
1559	canopy_heat_flux(k,j,i) = cthf * &
1560	exp( -0.6 * lai(k,j,i) )
1561	ENDDO
1562	ENDDO
1563	ENDDO
1564
1565	!
1566	!-- The near surface heat flux is derived from the heat flux
1567	!-- distribution within the canopy
1568	shf(:,:) = canopy_heat_flux(0,:,:)
1569
1570	ENDIF
1571
1572	ENDIF
1573
1574	!
1575	!-- If required, initialize dvrp-software
1576	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
1577
1578	IF ( ocean ) THEN
1579	!
1580	!-- Initialize quantities needed for the ocean model
1581	CALL init_ocean
1582
1583	ELSE
1584	!
1585	!-- Initialize quantities for handling cloud physics
1586	!-- This routine must be called before lpm_init, because
1587	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1588	!-- lpm_init) is not defined.
1589	CALL init_cloud_physics
1590	ENDIF
1591
1592	!
1593	!-- If required, initialize particles
1594	IF ( particle_advection ) CALL lpm_init
1595
1596	!
1597	!-- Initialize the ws-scheme.
1598	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1599
1600	!
1601	!-- Setting weighting factors for calculation of perturbation pressure
1602	!-- and turbulent quantities from the RK substeps
1603	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1604
1605	weight_substep(1) = 1._wp/6._wp
1606	weight_substep(2) = 3._wp/10._wp
1607	weight_substep(3) = 8._wp/15._wp
1608
1609	weight_pres(1) = 1._wp/3._wp
1610	weight_pres(2) = 5._wp/12._wp
1611	weight_pres(3) = 1._wp/4._wp
1612
1613	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1614
1615	weight_substep(1) = 1._wp/2._wp
1616	weight_substep(2) = 1._wp/2._wp
1617
1618	weight_pres(1) = 1._wp/2._wp
1619	weight_pres(2) = 1._wp/2._wp
1620
1621	ELSE ! for Euler-method
1622
1623	weight_substep(1) = 1.0
1624	weight_pres(1) = 1.0
1625
1626	ENDIF
1627
1628	!
1629	!-- Initialize Rayleigh damping factors
1630	rdf = 0.0
1631	rdf_sc = 0.0
1632	IF ( rayleigh_damping_factor /= 0.0 ) THEN
1633	IF ( .NOT. ocean ) THEN
1634	DO k = nzb+1, nzt
1635	IF ( zu(k) >= rayleigh_damping_height ) THEN
1636	rdf(k) = rayleigh_damping_factor * &
1637	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
1638	/ ( zu(nzt) - rayleigh_damping_height ) )&
1639	)**2
1640	ENDIF
1641	ENDDO
1642	ELSE
1643	DO k = nzt, nzb+1, -1
1644	IF ( zu(k) <= rayleigh_damping_height ) THEN
1645	rdf(k) = rayleigh_damping_factor * &
1646	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
1647	/ ( rayleigh_damping_height - zu(nzb+1)))&
1648	)**2
1649	ENDIF
1650	ENDDO
1651	ENDIF
1652	ENDIF
1653	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1654
1655	!
1656	!-- Initialize the starting level and the vertical smoothing factor used for
1657	!-- the external pressure gradient
1658	dp_smooth_factor = 1.0
1659	IF ( dp_external ) THEN
1660	!
1661	!-- Set the starting level dp_level_ind_b only if it has not been set before
1662	!-- (e.g. in init_grid).
1663	IF ( dp_level_ind_b == 0 ) THEN
1664	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1665	dp_level_ind_b = ind_array(1) - 1 + nzb
1666	! MINLOC uses lower array bound 1
1667	ENDIF
1668	IF ( dp_smooth ) THEN
1669	dp_smooth_factor(:dp_level_ind_b) = 0.0
1670	DO k = dp_level_ind_b+1, nzt
1671	dp_smooth_factor(k) = 0.5 * ( 1.0 + SIN( pi * &
1672	( REAL( k - dp_level_ind_b, KIND=wp ) / &
1673	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5 ) ) )
1674	ENDDO
1675	ENDIF
1676	ENDIF
1677
1678	!
1679	!-- Initialize damping zone for the potential temperature in case of
1680	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1681	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1682	ptdf_x = 0.0
1683	ptdf_y = 0.0
1684	IF ( bc_lr_dirrad ) THEN
1685	DO i = nxl, nxr
1686	IF ( ( i * dx ) < pt_damping_width ) THEN
1687	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5 * &
1688	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
1689	REAL( pt_damping_width, KIND=wp ) ) ) )**2
1690	ENDIF
1691	ENDDO
1692	ELSEIF ( bc_lr_raddir ) THEN
1693	DO i = nxl, nxr
1694	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1695	ptdf_x(i) = pt_damping_factor * &
1696	SIN( pi * 0.5 * &
1697	( ( i - nx ) * dx + pt_damping_width ) / &
1698	REAL( pt_damping_width, KIND=wp ) )**2
1699	ENDIF
1700	ENDDO
1701	ELSEIF ( bc_ns_dirrad ) THEN
1702	DO j = nys, nyn
1703	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1704	ptdf_y(j) = pt_damping_factor * &
1705	SIN( pi * 0.5 * &
1706	( ( j - ny ) * dy + pt_damping_width ) / &
1707	REAL( pt_damping_width, KIND=wp ) )**2
1708	ENDIF
1709	ENDDO
1710	ELSEIF ( bc_ns_raddir ) THEN
1711	DO j = nys, nyn
1712	IF ( ( j * dy ) < pt_damping_width ) THEN
1713	ptdf_y(j) = pt_damping_factor * &
1714	SIN( pi * 0.5 * &
1715	( pt_damping_width - j * dy ) / &
1716	REAL( pt_damping_width, KIND=wp ) )**2
1717	ENDIF
1718	ENDDO
1719	ENDIF
1720
1721	!
1722	!-- Initialize local summation arrays for routine flow_statistics.
1723	!-- This is necessary because they may not yet have been initialized when they
1724	!-- are called from flow_statistics (or - depending on the chosen model run -
1725	!-- are never initialized)
1726	sums_divnew_l = 0.0
1727	sums_divold_l = 0.0
1728	sums_l_l = 0.0
1729	sums_up_fraction_l = 0.0
1730	sums_wsts_bc_l = 0.0
1731
1732	!
1733	!-- Pre-set masks for regional statistics. Default is the total model domain.
1734	!-- Ghost points are excluded because counting values at the ghost boundaries
1735	!-- would bias the statistics
1736	rmask = 1.0
1737	rmask(:,nxlg:nxl-1,:) = 0.0; rmask(:,nxr+1:nxrg,:) = 0.0
1738	rmask(nysg:nys-1,:,:) = 0.0; rmask(nyn+1:nyng,:,:) = 0.0
1739
1740	!
1741	!-- User-defined initializing actions. Check afterwards, if maximum number
1742	!-- of allowed timeseries is exceeded
1743	CALL user_init
1744
1745	IF ( dots_num > dots_max ) THEN
1746	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1747	' its maximum of dots_max = ', dots_max, &
1748	' &Please increase dots_max in modules.f90.'
1749	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1750	ENDIF
1751
1752	!
1753	!-- Input binary data file is not needed anymore. This line must be placed
1754	!-- after call of user_init!
1755	CALL close_file( 13 )
1756
1757	!
1758	!-- Compute total sum of active mask grid points
1759	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1760	!-- total domain
1761	!-- ngp_3d: number of grid points of the total domain
1762	ngp_2dh_outer_l = 0
1763	ngp_2dh_outer = 0
1764	ngp_2dh_s_inner_l = 0
1765	ngp_2dh_s_inner = 0
1766	ngp_2dh_l = 0
1767	ngp_2dh = 0
1768	ngp_3d_inner_l = 0.0
1769	ngp_3d_inner = 0
1770	ngp_3d = 0
1771	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1772
1773	DO sr = 0, statistic_regions
1774	DO i = nxl, nxr
1775	DO j = nys, nyn
1776	IF ( rmask(j,i,sr) == 1.0 ) THEN
1777	!
1778	!-- All xy-grid points
1779	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1780	!
1781	!-- xy-grid points above topography
1782	DO k = nzb_s_outer(j,i), nz + 1
1783	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1784	ENDDO
1785	DO k = nzb_s_inner(j,i), nz + 1
1786	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1787	ENDDO
1788	!
1789	!-- All grid points of the total domain above topography
1790	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1791	( nz - nzb_s_inner(j,i) + 2 )
1792	ENDIF
1793	ENDDO
1794	ENDDO
1795	ENDDO
1796
1797	sr = statistic_regions + 1
1798	#if defined( __parallel )
1799	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1800	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1801	comm2d, ierr )
1802	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1803	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1804	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1805	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1806	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1807	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1808	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1809	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1810	MPI_SUM, comm2d, ierr )
1811	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1812	#else
1813	ngp_2dh = ngp_2dh_l
1814	ngp_2dh_outer = ngp_2dh_outer_l
1815	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1816	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1817	#endif
1818
1819	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1820	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1821
1822	!
1823	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1824	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1825	!-- the respective subdomain lie below the surface topography
1826	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1827	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1828	ngp_3d_inner(:) )
1829	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1830
1831	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1832
1833
1834	END SUBROUTINE init_3d_model

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