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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1174

Last change on this file since 1174 was 1172, checked in by raasch, 11 years ago
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1	#if defined( __ibmy_special )
2	@PROCESS NOOPTimize
3	#endif
4	SUBROUTINE init_3d_model
5
6	!--------------------------------------------------------------------------------!
7	! This file is part of PALM.
8	!
9	! PALM is free software: you can redistribute it and/or modify it under the terms
10	! of the GNU General Public License as published by the Free Software Foundation,
11	! either version 3 of the License, or (at your option) any later version.
12	!
13	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
14	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
15	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
16	!
17	! You should have received a copy of the GNU General Public License along with
18	! PALM. If not, see <http://www.gnu.org/licenses/>.
19	!
20	! Copyright 1997-2012 Leibniz University Hannover
21	!--------------------------------------------------------------------------------!
22	!
23	! Current revisions:
24	! ------------------
25	!
26	!
27	! Former revisions:
28	! -----------------
29	! $Id: init_3d_model.f90 1172 2013-05-30 11:46:00Z gryschka $
30	!
31	! 1171 2013-05-30 11:27:45Z raasch
32	! diss array is allocated with full size if accelerator boards are used
33	!
34	! 1159 2013-05-21 11:58:22Z fricke
35	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
36	!
37	! 1153 2013-05-10 14:33:08Z raasch
38	! diss array is allocated with dummy elements even if it is not needed
39	! (required by PGI 13.4 / CUDA 5.0)
40	!
41	! 1115 2013-03-26 18:16:16Z hoffmann
42	! unused variables removed
43	!
44	! 1113 2013-03-10 02:48:14Z raasch
45	! openACC directive modified
46	!
47	! 1111 2013-03-08 23:54:10Z raasch
48	! openACC directives added for pres
49	! array diss allocated only if required
50	!
51	! 1092 2013-02-02 11:24:22Z raasch
52	! unused variables removed
53	!
54	! 1065 2012-11-22 17:42:36Z hoffmann
55	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
56	!
57	! 1053 2012-11-13 17:11:03Z hoffmann
58	! allocation and initialisation of necessary data arrays for the two-moment
59	! cloud physics scheme the two new prognostic equations (nr, qr):
60	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
61	! +tend_*, prr
62	!
63	! 1036 2012-10-22 13:43:42Z raasch
64	! code put under GPL (PALM 3.9)
65	!
66	! 1032 2012-10-21 13:03:21Z letzel
67	! save memory by not allocating pt_2 in case of neutral = .T.
68	!
69	! 1025 2012-10-07 16:04:41Z letzel
70	! bugfix: swap indices of mask for ghost boundaries
71	!
72	! 1015 2012-09-27 09:23:24Z raasch
73	! mask is set to zero for ghost boundaries
74	!
75	! 1010 2012-09-20 07:59:54Z raasch
76	! cpp switch __nopointer added for pointer free version
77	!
78	! 1003 2012-09-14 14:35:53Z raasch
79	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
80	!
81	! 1001 2012-09-13 14:08:46Z raasch
82	! all actions concerning leapfrog scheme removed
83	!
84	! 996 2012-09-07 10:41:47Z raasch
85	! little reformatting
86	!
87	! 978 2012-08-09 08:28:32Z fricke
88	! outflow damping layer removed
89	! roughness length for scalar quantites z0h added
90	! damping zone for the potential temperatur in case of non-cyclic lateral
91	! boundaries added
92	! initialization of ptdf_x, ptdf_y
93	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
94	!
95	! 849 2012-03-15 10:35:09Z raasch
96	! init_particles renamed lpm_init
97	!
98	! 825 2012-02-19 03:03:44Z raasch
99	! wang_collision_kernel renamed wang_kernel
100	!
101	! 790 2011-11-29 03:11:20Z raasch
102	! diss is also allocated in case that the Wang kernel is used
103	!
104	! 787 2011-11-28 12:49:05Z heinze $
105	! bugfix: call init_advec in every case - not only for inital runs
106	!
107	! 785 2011-11-28 09:47:19Z raasch
108	! initialization of rdf_sc
109	!
110	! 767 2011-10-14 06:39:12Z raasch
111	! adjustments concerning implementation of prescribed u,v-profiles
112	! bugfix: dirichlet_0 conditions for ug/vg moved to check_parameters
113	!
114	! 759 2011-09-15 13:58:31Z raasch
115	! Splitting of parallel I/O in blocks of PEs
116	! Bugfix: No zero assignments to volume_flow_initial and volume_flow_area in
117	! case of normal restart runs.
118	!
119	! 713 2011-03-30 14:21:21Z suehring
120	! weight_substep and weight_pres are given as fractions.
121	!
122	! 709 2011-03-30 09:31:40Z raasch
123	! formatting adjustments
124	!
125	! 707 2011-03-29 11:39:40Z raasch
126	! p_sub renamed p_loc and allocated depending on the chosen pressure solver,
127	! initial assignments of zero to array p for iterative solvers only,
128	! bc_lr/ns replaced by bc_lr/ns_dirrad/raddir
129	!
130	! 680 2011-02-04 23:16:06Z gryschka
131	! bugfix: volume_flow_control
132	!
133	! 673 2011-01-18 16:19:48Z suehring
134	! weight_substep (moved from advec_ws) and weight_pres added.
135	! Allocate p_sub when using Multigrid or SOR solver.
136	! Call of ws_init moved behind the if requests.
137	!
138	! 667 2010-12-23 12:06:00Z suehring/gryschka
139	! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng in loops and
140	! allocation of arrays. Calls of exchange_horiz are modified.
141	! Call ws_init to initialize arrays needed for calculating statisticas and for
142	! optimization when ws-scheme is used.
143	! Initial volume flow is now calculated by using the variable hom_sum.
144	! Therefore the correction of initial volume flow for non-flat topography
145	! removed (removed u_nzb_p1_for_vfc and v_nzb_p1_for_vfc)
146	! Changed surface boundary conditions for u and v in case of ibc_uv_b == 0 from
147	! mirror to Dirichlet boundary conditions (u=v=0), so that k=nzb is
148	! representative for the height z0.
149	! Bugfix: type conversion of '1' to 64bit for the MAX function (ngp_3d_inner)
150	!
151	! 622 2010-12-10 08:08:13Z raasch
152	! optional barriers included in order to speed up collective operations
153	!
154	! 560 2010-09-09 10:06:09Z weinreis
155	! bugfix: correction of calculating ngp_3d for 64 bit
156	!
157	! 485 2010-02-05 10:57:51Z raasch
158	! calculation of ngp_3d + ngp_3d_inner changed because they have now 64 bit
159	!
160	! 407 2009-12-01 15:01:15Z maronga
161	! var_ts is replaced by dots_max
162	! Enabled passive scalar/humidity wall fluxes for non-flat topography
163	!
164	! 388 2009-09-23 09:40:33Z raasch
165	! Initialization of prho added.
166	! bugfix: correction of initial volume flow for non-flat topography
167	! bugfix: zero initialization of arrays within buildings for 'cyclic_fill'
168	! bugfix: avoid that ngp_2dh_s_inner becomes zero
169	! initializing_actions='read_data_for_recycling' renamed to 'cyclic_fill', now
170	! independent of turbulent_inflow
171	! Output of messages replaced by message handling routine.
172	! Set the starting level and the vertical smoothing factor used for
173	! the external pressure gradient
174	! +conserve_volume_flow_mode: 'default', 'initial_profiles', 'inflow_profile'
175	! and 'bulk_velocity'
176	! If the inversion height calculated by the prerun is zero,
177	! inflow_damping_height must be explicitly specified.
178	!
179	! 181 2008-07-30 07:07:47Z raasch
180	! bugfix: zero assignments to tendency arrays in case of restarts,
181	! further extensions and modifications in the initialisation of the plant
182	! canopy model,
183	! allocation of hom_sum moved to parin, initialization of spectrum_x\|y directly
184	! after allocating theses arrays,
185	! read data for recycling added as new initialization option,
186	! dummy allocation for diss
187	!
188	! 138 2007-11-28 10:03:58Z letzel
189	! New counter ngp_2dh_s_inner.
190	! Allow new case bc_uv_t = 'dirichlet_0' for channel flow.
191	! Corrected calculation of initial volume flow for 'set_1d-model_profiles' and
192	! 'set_constant_profiles' in case of buildings in the reference cross-sections.
193	!
194	! 108 2007-08-24 15:10:38Z letzel
195	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
196	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
197	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
198	! Rayleigh damping for ocean, optionally calculate km and kh from initial
199	! TKE e_init
200	!
201	! 97 2007-06-21 08:23:15Z raasch
202	! Initialization of salinity, call of init_ocean
203	!
204	! 87 2007-05-22 15:46:47Z raasch
205	! var_hom and var_sum renamed pr_palm
206	!
207	! 75 2007-03-22 09:54:05Z raasch
208	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
209	! bugfix for cases with the outflow damping layer extending over more than one
210	! subdomain, moisture renamed humidity,
211	! new initializing action "by_user" calls user_init_3d_model,
212	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
213	! initial velocities at nzb+1 are regarded for volume
214	! flow control in case they have been set zero before (to avoid small timesteps)
215	! -uvmean_outflow, uxrp, vynp eliminated
216	!
217	! 19 2007-02-23 04:53:48Z raasch
218	! +handling of top fluxes
219	!
220	! RCS Log replace by Id keyword, revision history cleaned up
221	!
222	! Revision 1.49 2006/08/22 15:59:07 raasch
223	! No optimization of this file on the ibmy (Yonsei Univ.)
224	!
225	! Revision 1.1 1998/03/09 16:22:22 raasch
226	! Initial revision
227	!
228	!
229	! Description:
230	! ------------
231	! Allocation of arrays and initialization of the 3D model via
232	! a) pre-run the 1D model
233	! or
234	! b) pre-set constant linear profiles
235	! or
236	! c) read values of a previous run
237	!------------------------------------------------------------------------------!
238
239	USE advec_ws
240	USE arrays_3d
241	USE averaging
242	USE cloud_parameters
243	USE constants
244	USE control_parameters
245	USE cpulog
246	USE grid_variables
247	USE indices
248	USE interfaces
249	USE model_1d
250	USE netcdf_control
251	USE particle_attributes
252	USE pegrid
253	USE profil_parameter
254	USE random_function_mod
255	USE statistics
256	USE transpose_indices
257
258	IMPLICIT NONE
259
260	INTEGER :: i, ind_array(1), j, k, sr
261
262	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l
263
264	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l, &
265	ngp_2dh_s_inner_l
266
267	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
268
269	REAL, DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l, ngp_3d_inner_tmp
270
271
272	!
273	!-- Allocate arrays
274	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
275	ngp_3d(0:statistic_regions), &
276	ngp_3d_inner(0:statistic_regions), &
277	ngp_3d_inner_l(0:statistic_regions), &
278	ngp_3d_inner_tmp(0:statistic_regions), &
279	sums_divnew_l(0:statistic_regions), &
280	sums_divold_l(0:statistic_regions) )
281	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
282	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
283	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
284	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
285	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
286	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
287	sums(nzb:nzt+1,pr_palm+max_pr_user), &
288	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
289	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
290	sums_up_fraction_l(10,3,0:statistic_regions), &
291	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
292	ts_value(dots_max,0:statistic_regions) )
293	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
294
295	ALLOCATE( rif(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
296	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
297	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
298	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
299	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
300	z0h(nysg:nyng,nxlg:nxrg) )
301
302	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
303	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
304	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
305	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
306	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
307
308	#if defined( __nopointer )
309	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
310	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
311	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
312	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
313	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
314	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
315	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
316	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
317	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
318	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
319	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
320	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
321	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
322	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
323	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
324	#else
325	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
326	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
327	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
328	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
329	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
330	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
331	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
332	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
333	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
334	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
335	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
336	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
337	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
338	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
339	IF ( .NOT. neutral ) THEN
340	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
341	ENDIF
342	#endif
343
344	!
345	!-- Following array is required for perturbation pressure within the iterative
346	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
347	!-- the weighted average of the substeps and cannot be used in the Poisson
348	!-- solver.
349	IF ( psolver == 'sor' ) THEN
350	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
351	ELSEIF ( psolver == 'multigrid' ) THEN
352	!
353	!-- For performance reasons, multigrid is using one ghost layer only
354	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
355	ENDIF
356
357	!
358	!-- Array for storing constant coeffficients of the tridiagonal solver
359	IF ( psolver == 'poisfft' ) THEN
360	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
361	ENDIF
362
363	IF ( humidity .OR. passive_scalar ) THEN
364	!
365	!-- 2D-humidity/scalar arrays
366	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
367	qsws(nysg:nyng,nxlg:nxrg), &
368	qswst(nysg:nyng,nxlg:nxrg) )
369
370	!
371	!-- 3D-humidity/scalar arrays
372	#if defined( __nopointer )
373	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
374	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
375	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
376	#else
377	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
378	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
379	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
380	#endif
381
382	!
383	!-- 3D-arrays needed for humidity only
384	IF ( humidity ) THEN
385	#if defined( __nopointer )
386	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
387	#else
388	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
389	#endif
390
391	IF ( cloud_physics ) THEN
392
393	!
394	!-- Liquid water content
395	#if defined( __nopointer )
396	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
397	#else
398	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
399	#endif
400	!
401	!-- Precipitation amount and rate (only needed if output is switched)
402	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
403	precipitation_rate(nysg:nyng,nxlg:nxrg) )
404
405	IF ( icloud_scheme == 0 ) THEN
406	!
407	!-- 1D-arrays
408	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
409	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
410	!
411	!-- 3D-cloud water content
412	#if defined( __nopointer )
413	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
414	#else
415	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
416	#endif
417	!
418	!-- 3D-tendency arrays
419	ALLOCATE( tend_pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
420	tend_q(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
421
422	IF ( precipitation ) THEN
423	!
424	!-- 1D-arrays
425	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
426	!
427	!
428	!-- 3D-tendency arrays
429	ALLOCATE( tend_nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
430	tend_qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
431	!
432	!-- 2D-rain water content and rain drop concentration arrays
433	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
434	qrsws(nysg:nyng,nxlg:nxrg), &
435	qrswst(nysg:nyng,nxlg:nxrg), &
436	nrs(nysg:nyng,nxlg:nxrg), &
437	nrsws(nysg:nyng,nxlg:nxrg), &
438	nrswst(nysg:nyng,nxlg:nxrg) )
439	!
440	!-- 3D-rain water content, rain drop concentration arrays
441	#if defined( __nopointer )
442	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
443	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
444	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
445	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
446	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
447	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
448	#else
449	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
450	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
451	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
452	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
453	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
454	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
455	#endif
456	!
457	!-- 3d-precipitation rate
458	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
459	ENDIF
460
461	ENDIF
462	ENDIF
463
464	IF ( cloud_droplets ) THEN
465	!
466	!-- Liquid water content, change in liquid water content
467	#if defined( __nopointer )
468	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
469	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
470	#else
471	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
472	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
473	#endif
474	!
475	!-- Real volume of particles (with weighting), volume of particles
476	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
477	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
478	ENDIF
479
480	ENDIF
481
482	ENDIF
483
484	IF ( ocean ) THEN
485	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
486	saswst(nysg:nyng,nxlg:nxrg) )
487	#if defined( __nopointer )
488	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
489	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
490	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
491	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
492	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
493	#else
494	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
495	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
496	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
497	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
498	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
499	prho => prho_1
500	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
501	! density to be apointer
502	#endif
503	IF ( humidity_remote ) THEN
504	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
505	qswst_remote = 0.0
506	ENDIF
507	ENDIF
508
509	!
510	!-- 3D-array for storing the dissipation, needed for calculating the sgs
511	!-- particle velocities
512	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence .OR. &
513	num_acc_per_node > 0 ) THEN
514	print, '** allocating diss'
515	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
516	ENDIF
517
518	IF ( dt_dosp /= 9999999.9 ) THEN
519	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
520	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
521	spectrum_x = 0.0
522	spectrum_y = 0.0
523	ENDIF
524
525	!
526	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
527	IF ( plant_canopy ) THEN
528	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
529	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
530	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
531	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
532	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
533
534	IF ( passive_scalar ) THEN
535	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
536	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
537	ENDIF
538
539	IF ( cthf /= 0.0 ) THEN
540	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
541	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
542	ENDIF
543
544	ENDIF
545
546	!
547	!-- 4D-array for storing the Rif-values at vertical walls
548	IF ( topography /= 'flat' ) THEN
549	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
550	rif_wall = 0.0
551	ENDIF
552
553	!
554	!-- Arrays to store velocity data from t-dt and the phase speeds which
555	!-- are needed for radiation boundary conditions
556	IF ( outflow_l ) THEN
557	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
558	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
559	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
560	ENDIF
561	IF ( outflow_r ) THEN
562	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
563	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
564	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
565	ENDIF
566	IF ( outflow_l .OR. outflow_r ) THEN
567	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
568	c_w(nzb:nzt+1,nysg:nyng) )
569	ENDIF
570	IF ( outflow_s ) THEN
571	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
572	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
573	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
574	ENDIF
575	IF ( outflow_n ) THEN
576	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
577	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
578	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
579	ENDIF
580	IF ( outflow_s .OR. outflow_n ) THEN
581	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
582	c_w(nzb:nzt+1,nxlg:nxrg) )
583	ENDIF
584	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
585	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
586	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
587	ENDIF
588
589
590	#if ! defined( __nopointer )
591	!
592	!-- Initial assignment of the pointers
593	e => e_1; e_p => e_2; te_m => e_3
594	IF ( .NOT. neutral ) THEN
595	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
596	ELSE
597	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
598	ENDIF
599	u => u_1; u_p => u_2; tu_m => u_3
600	v => v_1; v_p => v_2; tv_m => v_3
601	w => w_1; w_p => w_2; tw_m => w_3
602
603	IF ( humidity .OR. passive_scalar ) THEN
604	q => q_1; q_p => q_2; tq_m => q_3
605	IF ( humidity ) THEN
606	vpt => vpt_1
607	IF ( cloud_physics ) THEN
608	ql => ql_1
609	IF ( icloud_scheme == 0 ) THEN
610	qc => qc_1
611	IF ( precipitation ) THEN
612	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
613	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
614	ENDIF
615	ENDIF
616	ENDIF
617	ENDIF
618	IF ( cloud_droplets ) THEN
619	ql => ql_1
620	ql_c => ql_2
621	ENDIF
622	ENDIF
623
624	IF ( ocean ) THEN
625	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
626	ENDIF
627	#endif
628
629	!
630	!-- Allocate arrays containing the RK coefficient for calculation of
631	!-- perturbation pressure and turbulent fluxes. At this point values are
632	!-- set for pressure calculation during initialization (where no timestep
633	!-- is done). Further below the values needed within the timestep scheme
634	!-- will be set.
635	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
636	weight_pres(1:intermediate_timestep_count_max) )
637	weight_substep = 1.0
638	weight_pres = 1.0
639	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
640
641	!
642	!-- Initialize model variables
643	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
644	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
645	!
646	!-- First model run of a possible job queue.
647	!-- Initial profiles of the variables must be computes.
648	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
649	!
650	!-- Use solutions of the 1D model as initial profiles,
651	!-- start 1D model
652	CALL init_1d_model
653	!
654	!-- Transfer initial profiles to the arrays of the 3D model
655	DO i = nxlg, nxrg
656	DO j = nysg, nyng
657	e(:,j,i) = e1d
658	kh(:,j,i) = kh1d
659	km(:,j,i) = km1d
660	pt(:,j,i) = pt_init
661	u(:,j,i) = u1d
662	v(:,j,i) = v1d
663	ENDDO
664	ENDDO
665
666	IF ( humidity .OR. passive_scalar ) THEN
667	DO i = nxlg, nxrg
668	DO j = nysg, nyng
669	q(:,j,i) = q_init
670	ENDDO
671	ENDDO
672	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
673	precipitation ) THEN
674	DO i = nxlg, nxrg
675	DO j = nysg, nyng
676	qr(:,j,i) = 0.0
677	nr(:,j,i) = 0.0
678	ENDDO
679	ENDDO
680	!
681	!-- Initialze nc_1d with default value
682	nc_1d(:) = nc_const
683
684	ENDIF
685	ENDIF
686
687	IF ( .NOT. constant_diffusion ) THEN
688	DO i = nxlg, nxrg
689	DO j = nysg, nyng
690	e(:,j,i) = e1d
691	ENDDO
692	ENDDO
693	!
694	!-- Store initial profiles for output purposes etc.
695	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
696
697	IF ( prandtl_layer ) THEN
698	rif = rif1d(nzb+1)
699	ts = 0.0 ! could actually be computed more accurately in the
700	! 1D model. Update when opportunity arises.
701	us = us1d
702	usws = usws1d
703	vsws = vsws1d
704	ELSE
705	ts = 0.0 ! must be set, because used in
706	rif = 0.0 ! flowste
707	us = 0.0
708	usws = 0.0
709	vsws = 0.0
710	ENDIF
711
712	ELSE
713	e = 0.0 ! must be set, because used in
714	rif = 0.0 ! flowste
715	ts = 0.0
716	us = 0.0
717	usws = 0.0
718	vsws = 0.0
719	ENDIF
720	uswst = top_momentumflux_u
721	vswst = top_momentumflux_v
722
723	!
724	!-- In every case qs = 0.0 (see also pt)
725	!-- This could actually be computed more accurately in the 1D model.
726	!-- Update when opportunity arises!
727	IF ( humidity .OR. passive_scalar ) THEN
728	qs = 0.0
729	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
730	precipitation ) THEN
731	qrs = 0.0
732	nrs = 0.0
733	ENDIF
734	ENDIF
735
736	!
737	!-- inside buildings set velocities back to zero
738	IF ( topography /= 'flat' ) THEN
739	DO i = nxl-1, nxr+1
740	DO j = nys-1, nyn+1
741	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
742	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
743	ENDDO
744	ENDDO
745
746	!
747	!-- WARNING: The extra boundary conditions set after running the
748	!-- ------- 1D model impose an error on the divergence one layer
749	!-- below the topography; need to correct later
750	!-- ATTENTION: Provisional correction for Piacsek & Williams
751	!-- --------- advection scheme: keep u and v zero one layer below
752	!-- the topography.
753	IF ( ibc_uv_b == 1 ) THEN
754	!
755	!-- Neumann condition
756	DO i = nxl-1, nxr+1
757	DO j = nys-1, nyn+1
758	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
759	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
760	ENDDO
761	ENDDO
762
763	ENDIF
764
765	ENDIF
766
767	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
768	THEN
769	!
770	!-- Use constructed initial profiles (velocity constant with height,
771	!-- temperature profile with constant gradient)
772	DO i = nxlg, nxrg
773	DO j = nysg, nyng
774	pt(:,j,i) = pt_init
775	u(:,j,i) = u_init
776	v(:,j,i) = v_init
777	ENDDO
778	ENDDO
779
780	!
781	!-- Set initial horizontal velocities at the lowest computational grid
782	!-- levels to zero in order to avoid too small time steps caused by the
783	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
784	!-- in the limiting formula!). The original values are stored to be later
785	!-- used for volume flow control.
786	DO i = nxlg, nxrg
787	DO j = nysg, nyng
788	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
789	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
790	ENDDO
791	ENDDO
792
793	IF ( humidity .OR. passive_scalar ) THEN
794	DO i = nxlg, nxrg
795	DO j = nysg, nyng
796	q(:,j,i) = q_init
797	ENDDO
798	ENDDO
799	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
800	!
801	!-- Initialze nc_1d with default value
802	nc_1d(:) = nc_const
803
804	IF ( precipitation ) THEN
805	DO i = nxlg, nxrg
806	DO j = nysg, nyng
807	qr(:,j,i) = 0.0
808	nr(:,j,i) = 0.0
809	ENDDO
810	ENDDO
811	ENDIF
812
813	ENDIF
814	ENDIF
815
816	IF ( ocean ) THEN
817	DO i = nxlg, nxrg
818	DO j = nysg, nyng
819	sa(:,j,i) = sa_init
820	ENDDO
821	ENDDO
822	ENDIF
823
824	IF ( constant_diffusion ) THEN
825	km = km_constant
826	kh = km / prandtl_number
827	e = 0.0
828	ELSEIF ( e_init > 0.0 ) THEN
829	DO k = nzb+1, nzt
830	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
831	ENDDO
832	km(nzb,:,:) = km(nzb+1,:,:)
833	km(nzt+1,:,:) = km(nzt,:,:)
834	kh = km / prandtl_number
835	e = e_init
836	ELSE
837	IF ( .NOT. ocean ) THEN
838	kh = 0.01 ! there must exist an initial diffusion, because
839	km = 0.01 ! otherwise no TKE would be produced by the
840	! production terms, as long as not yet
841	! e = (u/cm)*2 at k=nzb+1
842	ELSE
843	kh = 0.00001
844	km = 0.00001
845	ENDIF
846	e = 0.0
847	ENDIF
848	rif = 0.0
849	ts = 0.0
850	us = 0.0
851	usws = 0.0
852	uswst = top_momentumflux_u
853	vsws = 0.0
854	vswst = top_momentumflux_v
855	IF ( humidity .OR. passive_scalar ) qs = 0.0
856
857	!
858	!-- Compute initial temperature field and other constants used in case
859	!-- of a sloping surface
860	IF ( sloping_surface ) CALL init_slope
861
862	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
863	THEN
864	!
865	!-- Initialization will completely be done by the user
866	CALL user_init_3d_model
867
868	ENDIF
869	!
870	!-- Bottom boundary
871	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
872	u(nzb,:,:) = 0.0
873	v(nzb,:,:) = 0.0
874	ENDIF
875
876	!
877	!-- Apply channel flow boundary condition
878	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
879	u(nzt+1,:,:) = 0.0
880	v(nzt+1,:,:) = 0.0
881	ENDIF
882
883	!
884	!-- Calculate virtual potential temperature
885	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
886
887	!
888	!-- Store initial profiles for output purposes etc.
889	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
890	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
891	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
892	hom(nzb,1,5,:) = 0.0
893	hom(nzb,1,6,:) = 0.0
894	ENDIF
895	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
896	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
897	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
898
899	IF ( ocean ) THEN
900	!
901	!-- Store initial salinity profile
902	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
903	ENDIF
904
905	IF ( humidity ) THEN
906	!
907	!-- Store initial profile of total water content, virtual potential
908	!-- temperature
909	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
910	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
911	IF ( cloud_physics .OR. cloud_droplets ) THEN
912	!
913	!-- Store initial profile of specific humidity and potential
914	!-- temperature
915	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
916	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
917	ENDIF
918	ENDIF
919
920	IF ( passive_scalar ) THEN
921	!
922	!-- Store initial scalar profile
923	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
924	ENDIF
925
926	!
927	!-- Initialize fluxes at bottom surface
928	IF ( use_surface_fluxes ) THEN
929
930	IF ( constant_heatflux ) THEN
931	!
932	!-- Heat flux is prescribed
933	IF ( random_heatflux ) THEN
934	CALL disturb_heatflux
935	ELSE
936	shf = surface_heatflux
937	!
938	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
939	IF ( TRIM( topography ) /= 'flat' ) THEN
940	DO i = nxlg, nxrg
941	DO j = nysg, nyng
942	IF ( nzb_s_inner(j,i) /= 0 ) THEN
943	shf(j,i) = wall_heatflux(0)
944	ENDIF
945	ENDDO
946	ENDDO
947	ENDIF
948	ENDIF
949	ENDIF
950
951	!
952	!-- Determine the near-surface water flux
953	IF ( humidity .OR. passive_scalar ) THEN
954	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
955	precipitation ) THEN
956	qrsws = 0.0
957	nrsws = 0.0
958	ENDIF
959	IF ( constant_waterflux ) THEN
960	qsws = surface_waterflux
961	!
962	!-- Over topography surface_waterflux is replaced by
963	!-- wall_humidityflux(0)
964	IF ( TRIM( topography ) /= 'flat' ) THEN
965	wall_qflux = wall_humidityflux
966	DO i = nxlg, nxrg
967	DO j = nysg, nyng
968	IF ( nzb_s_inner(j,i) /= 0 ) THEN
969	qsws(j,i) = wall_qflux(0)
970	ENDIF
971	ENDDO
972	ENDDO
973	ENDIF
974	ENDIF
975	ENDIF
976
977	ENDIF
978
979	!
980	!-- Initialize fluxes at top surface
981	!-- Currently, only the heatflux and salinity flux can be prescribed.
982	!-- The latent flux is zero in this case!
983	IF ( use_top_fluxes ) THEN
984
985	IF ( constant_top_heatflux ) THEN
986	!
987	!-- Heat flux is prescribed
988	tswst = top_heatflux
989
990	IF ( humidity .OR. passive_scalar ) THEN
991	qswst = 0.0
992	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
993	precipitation ) THEN
994	nrswst = 0.0
995	qrswst = 0.0
996	ENDIF
997	ENDIF
998
999	IF ( ocean ) THEN
1000	saswsb = bottom_salinityflux
1001	saswst = top_salinityflux
1002	ENDIF
1003	ENDIF
1004
1005	!
1006	!-- Initialization in case of a coupled model run
1007	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1008	tswst = 0.0
1009	ENDIF
1010
1011	ENDIF
1012
1013	!
1014	!-- Initialize Prandtl layer quantities
1015	IF ( prandtl_layer ) THEN
1016
1017	z0 = roughness_length
1018	z0h = z0h_factor * z0
1019
1020	IF ( .NOT. constant_heatflux ) THEN
1021	!
1022	!-- Surface temperature is prescribed. Here the heat flux cannot be
1023	!-- simply estimated, because therefore rif, u* and theta* would have
1024	!-- to be computed by iteration. This is why the heat flux is assumed
1025	!-- to be zero before the first time step. It approaches its correct
1026	!-- value in the course of the first few time steps.
1027	shf = 0.0
1028	ENDIF
1029
1030	IF ( humidity .OR. passive_scalar ) THEN
1031	IF ( .NOT. constant_waterflux ) qsws = 0.0
1032	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1033	precipitation ) THEN
1034	qrsws = 0.0
1035	nrsws = 0.0
1036	ENDIF
1037	ENDIF
1038
1039	ENDIF
1040
1041
1042	!
1043	!-- For the moment, vertical velocity is zero
1044	w = 0.0
1045
1046	!
1047	!-- Initialize array sums (must be defined in first call of pres)
1048	sums = 0.0
1049
1050	!
1051	!-- In case of iterative solvers, p must get an initial value
1052	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0
1053
1054	!
1055	!-- Treating cloud physics, liquid water content and precipitation amount
1056	!-- are zero at beginning of the simulation
1057	IF ( cloud_physics ) THEN
1058	ql = 0.0
1059	IF ( precipitation ) precipitation_amount = 0.0
1060	IF ( icloud_scheme == 0 ) THEN
1061	qc = 0.0
1062	nc_1d = nc_const
1063	ENDIF
1064	ENDIF
1065	!
1066	!-- Impose vortex with vertical axis on the initial velocity profile
1067	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1068	CALL init_rankine
1069	ENDIF
1070
1071	!
1072	!-- Impose temperature anomaly (advection test only)
1073	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1074	CALL init_pt_anomaly
1075	ENDIF
1076
1077	!
1078	!-- If required, change the surface temperature at the start of the 3D run
1079	IF ( pt_surface_initial_change /= 0.0 ) THEN
1080	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1081	ENDIF
1082
1083	!
1084	!-- If required, change the surface humidity/scalar at the start of the 3D
1085	!-- run
1086	IF ( ( humidity .OR. passive_scalar ) .AND. &
1087	q_surface_initial_change /= 0.0 ) THEN
1088	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1089	ENDIF
1090	!
1091	!-- Initialize the random number generator (from numerical recipes)
1092	CALL random_function_ini
1093
1094	!
1095	!-- Initialize old and new time levels.
1096	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1097	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1098
1099	IF ( humidity .OR. passive_scalar ) THEN
1100	tq_m = 0.0
1101	q_p = q
1102	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1103	precipitation ) THEN
1104	tqr_m = 0.0
1105	qr_p = qr
1106	tnr_m = 0.0
1107	nr_p = nr
1108	ENDIF
1109	ENDIF
1110
1111	IF ( ocean ) THEN
1112	tsa_m = 0.0
1113	sa_p = sa
1114	ENDIF
1115
1116
1117	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1118	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1119	THEN
1120	!
1121	!-- When reading data for cyclic fill of 3D prerun data files, read
1122	!-- some of the global variables from the restart file which are required
1123	!-- for initializing the inflow
1124	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1125
1126	DO i = 0, io_blocks-1
1127	IF ( i == io_group ) THEN
1128	CALL read_parts_of_var_list
1129	CALL close_file( 13 )
1130	ENDIF
1131	#if defined( __parallel )
1132	CALL MPI_BARRIER( comm2d, ierr )
1133	#endif
1134	ENDDO
1135
1136	ENDIF
1137
1138	!
1139	!-- Read binary data from restart file
1140	DO i = 0, io_blocks-1
1141	IF ( i == io_group ) THEN
1142	CALL read_3d_binary
1143	ENDIF
1144	#if defined( __parallel )
1145	CALL MPI_BARRIER( comm2d, ierr )
1146	#endif
1147	ENDDO
1148
1149	!
1150	!-- Initialization of the turbulence recycling method
1151	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1152	turbulent_inflow ) THEN
1153	!
1154	!-- First store the profiles to be used at the inflow.
1155	!-- These profiles are the (temporally) and horizontally averaged vertical
1156	!-- profiles from the prerun. Alternatively, prescribed profiles
1157	!-- for u,v-components can be used.
1158	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
1159
1160	IF ( use_prescribed_profile_data ) THEN
1161	mean_inflow_profiles(:,1) = u_init ! u
1162	mean_inflow_profiles(:,2) = v_init ! v
1163	ELSE
1164	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1165	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1166	ENDIF
1167	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1168	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1169
1170	!
1171	!-- If necessary, adjust the horizontal flow field to the prescribed
1172	!-- profiles
1173	IF ( use_prescribed_profile_data ) THEN
1174	DO i = nxlg, nxrg
1175	DO j = nysg, nyng
1176	DO k = nzb, nzt+1
1177	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1178	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1179	ENDDO
1180	ENDDO
1181	ENDDO
1182	ENDIF
1183
1184	!
1185	!-- Use these mean profiles at the inflow (provided that Dirichlet
1186	!-- conditions are used)
1187	IF ( inflow_l ) THEN
1188	DO j = nysg, nyng
1189	DO k = nzb, nzt+1
1190	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1191	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1192	w(k,j,nxlg:-1) = 0.0
1193	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1194	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1195	ENDDO
1196	ENDDO
1197	ENDIF
1198
1199	!
1200	!-- Calculate the damping factors to be used at the inflow. For a
1201	!-- turbulent inflow the turbulent fluctuations have to be limited
1202	!-- vertically because otherwise the turbulent inflow layer will grow
1203	!-- in time.
1204	IF ( inflow_damping_height == 9999999.9 ) THEN
1205	!
1206	!-- Default: use the inversion height calculated by the prerun; if
1207	!-- this is zero, inflow_damping_height must be explicitly
1208	!-- specified.
1209	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0 ) THEN
1210	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1211	ELSE
1212	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1213	'explicitly specified because&the inversion height ', &
1214	'calculated by the prerun is zero.'
1215	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1216	ENDIF
1217
1218	ENDIF
1219
1220	IF ( inflow_damping_width == 9999999.9 ) THEN
1221	!
1222	!-- Default for the transition range: one tenth of the undamped
1223	!-- layer
1224	inflow_damping_width = 0.1 * inflow_damping_height
1225
1226	ENDIF
1227
1228	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1229
1230	DO k = nzb, nzt+1
1231
1232	IF ( zu(k) <= inflow_damping_height ) THEN
1233	inflow_damping_factor(k) = 1.0
1234	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1235	inflow_damping_factor(k) = 1.0 - &
1236	( zu(k) - inflow_damping_height ) / &
1237	inflow_damping_width
1238	ELSE
1239	inflow_damping_factor(k) = 0.0
1240	ENDIF
1241
1242	ENDDO
1243
1244	ENDIF
1245
1246	!
1247	!-- Inside buildings set velocities and TKE back to zero
1248	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1249	topography /= 'flat' ) THEN
1250	!
1251	!-- Inside buildings set velocities and TKE back to zero.
1252	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1253	!-- maybe revise later.
1254	DO i = nxlg, nxrg
1255	DO j = nysg, nyng
1256	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1257	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1258	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1259	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1260	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1261	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1262	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1263	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1264	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1265	ENDDO
1266	ENDDO
1267
1268	ENDIF
1269
1270	!
1271	!-- Calculate initial temperature field and other constants used in case
1272	!-- of a sloping surface
1273	IF ( sloping_surface ) CALL init_slope
1274
1275	!
1276	!-- Initialize new time levels (only done in order to set boundary values
1277	!-- including ghost points)
1278	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1279	IF ( humidity .OR. passive_scalar ) THEN
1280	q_p = q
1281	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1282	precipitation ) THEN
1283	qr_p = qr
1284	nr_p = nr
1285	ENDIF
1286	ENDIF
1287	IF ( ocean ) sa_p = sa
1288
1289	!
1290	!-- Allthough tendency arrays are set in prognostic_equations, they have
1291	!-- have to be predefined here because they are used (but multiplied with 0)
1292	!-- there before they are set.
1293	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1294	IF ( humidity .OR. passive_scalar ) THEN
1295	tq_m = 0.0
1296	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1297	precipitation ) THEN
1298	tqr_m = 0.0
1299	tnr_m = 0.0
1300	ENDIF
1301	ENDIF
1302	IF ( ocean ) tsa_m = 0.0
1303
1304	ELSE
1305	!
1306	!-- Actually this part of the programm should not be reached
1307	message_string = 'unknown initializing problem'
1308	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1309	ENDIF
1310
1311
1312	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1313	!
1314	!-- Initialize old timelevels needed for radiation boundary conditions
1315	IF ( outflow_l ) THEN
1316	u_m_l(:,:,:) = u(:,:,1:2)
1317	v_m_l(:,:,:) = v(:,:,0:1)
1318	w_m_l(:,:,:) = w(:,:,0:1)
1319	ENDIF
1320	IF ( outflow_r ) THEN
1321	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1322	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1323	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1324	ENDIF
1325	IF ( outflow_s ) THEN
1326	u_m_s(:,:,:) = u(:,0:1,:)
1327	v_m_s(:,:,:) = v(:,1:2,:)
1328	w_m_s(:,:,:) = w(:,0:1,:)
1329	ENDIF
1330	IF ( outflow_n ) THEN
1331	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1332	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1333	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1334	ENDIF
1335
1336	ENDIF
1337
1338	!
1339	!-- Calculate the initial volume flow at the right and north boundary
1340	IF ( conserve_volume_flow ) THEN
1341
1342	IF ( use_prescribed_profile_data ) THEN
1343
1344	volume_flow_initial_l = 0.0
1345	volume_flow_area_l = 0.0
1346
1347	IF ( nxr == nx ) THEN
1348	DO j = nys, nyn
1349	DO k = nzb_2d(j,nx)+1, nzt
1350	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1351	u_init(k) * dzw(k)
1352	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1353	ENDDO
1354	ENDDO
1355	ENDIF
1356
1357	IF ( nyn == ny ) THEN
1358	DO i = nxl, nxr
1359	DO k = nzb_2d(ny,i)+1, nzt
1360	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1361	v_init(k) * dzw(k)
1362	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1363	ENDDO
1364	ENDDO
1365	ENDIF
1366
1367	#if defined( __parallel )
1368	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1369	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1370	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1371	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1372
1373	#else
1374	volume_flow_initial = volume_flow_initial_l
1375	volume_flow_area = volume_flow_area_l
1376	#endif
1377
1378	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1379
1380	volume_flow_initial_l = 0.0
1381	volume_flow_area_l = 0.0
1382
1383	IF ( nxr == nx ) THEN
1384	DO j = nys, nyn
1385	DO k = nzb_2d(j,nx)+1, nzt
1386	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1387	hom_sum(k,1,0) * dzw(k)
1388	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1389	ENDDO
1390	ENDDO
1391	ENDIF
1392
1393	IF ( nyn == ny ) THEN
1394	DO i = nxl, nxr
1395	DO k = nzb_2d(ny,i)+1, nzt
1396	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1397	hom_sum(k,2,0) * dzw(k)
1398	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1399	ENDDO
1400	ENDDO
1401	ENDIF
1402
1403	#if defined( __parallel )
1404	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1405	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1406	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1407	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1408
1409	#else
1410	volume_flow_initial = volume_flow_initial_l
1411	volume_flow_area = volume_flow_area_l
1412	#endif
1413
1414	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1415
1416	volume_flow_initial_l = 0.0
1417	volume_flow_area_l = 0.0
1418
1419	IF ( nxr == nx ) THEN
1420	DO j = nys, nyn
1421	DO k = nzb_2d(j,nx)+1, nzt
1422	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1423	u(k,j,nx) * dzw(k)
1424	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1425	ENDDO
1426	ENDDO
1427	ENDIF
1428
1429	IF ( nyn == ny ) THEN
1430	DO i = nxl, nxr
1431	DO k = nzb_2d(ny,i)+1, nzt
1432	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1433	v(k,ny,i) * dzw(k)
1434	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1435	ENDDO
1436	ENDDO
1437	ENDIF
1438
1439	#if defined( __parallel )
1440	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1441	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1442	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1443	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1444
1445	#else
1446	volume_flow_initial = volume_flow_initial_l
1447	volume_flow_area = volume_flow_area_l
1448	#endif
1449
1450	ENDIF
1451
1452	!
1453	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1454	!-- from u\|v_bulk instead
1455	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1456	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1457	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1458	ENDIF
1459
1460	ENDIF
1461
1462	!
1463	!-- Initialize quantities for special advections schemes
1464	CALL init_advec
1465
1466	!
1467	!-- Impose random perturbation on the horizontal velocity field and then
1468	!-- remove the divergences from the velocity field at the initial stage
1469	IF ( create_disturbances .AND. &
1470	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1471	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1472
1473	CALL disturb_field( nzb_u_inner, tend, u )
1474	CALL disturb_field( nzb_v_inner, tend, v )
1475	n_sor = nsor_ini
1476	!$acc data copy( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner, nzb_v_inner, nzb_w_inner, p, tric, u, v, w, weight_pres, weight_substep, tend )
1477	CALL pres
1478	!$acc end data
1479	n_sor = nsor
1480	ENDIF
1481
1482	!
1483	!-- Initialization of the leaf area density
1484	IF ( plant_canopy ) THEN
1485
1486	SELECT CASE ( TRIM( canopy_mode ) )
1487
1488	CASE( 'block' )
1489
1490	DO i = nxlg, nxrg
1491	DO j = nysg, nyng
1492	lad_s(:,j,i) = lad(:)
1493	cdc(:,j,i) = drag_coefficient
1494	IF ( passive_scalar ) THEN
1495	sls(:,j,i) = leaf_surface_concentration
1496	sec(:,j,i) = scalar_exchange_coefficient
1497	ENDIF
1498	ENDDO
1499	ENDDO
1500
1501	CASE DEFAULT
1502
1503	!
1504	!-- The DEFAULT case is reached either if the parameter
1505	!-- canopy mode contains a wrong character string or if the
1506	!-- user has coded a special case in the user interface.
1507	!-- There, the subroutine user_init_plant_canopy checks
1508	!-- which of these two conditions applies.
1509	CALL user_init_plant_canopy
1510
1511	END SELECT
1512
1513	CALL exchange_horiz( lad_s, nbgp )
1514	CALL exchange_horiz( cdc, nbgp )
1515
1516	IF ( passive_scalar ) THEN
1517	CALL exchange_horiz( sls, nbgp )
1518	CALL exchange_horiz( sec, nbgp )
1519	ENDIF
1520
1521	!
1522	!-- Sharp boundaries of the plant canopy in horizontal directions
1523	!-- In vertical direction the interpolation is retained, as the leaf
1524	!-- area density is initialised by prescribing a vertical profile
1525	!-- consisting of piecewise linear segments. The upper boundary
1526	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1527
1528	DO i = nxl, nxr
1529	DO j = nys, nyn
1530	DO k = nzb, nzt+1
1531	IF ( lad_s(k,j,i) > 0.0 ) THEN
1532	lad_u(k,j,i) = lad_s(k,j,i)
1533	lad_u(k,j,i+1) = lad_s(k,j,i)
1534	lad_v(k,j,i) = lad_s(k,j,i)
1535	lad_v(k,j+1,i) = lad_s(k,j,i)
1536	ENDIF
1537	ENDDO
1538	DO k = nzb, nzt
1539	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1540	ENDDO
1541	ENDDO
1542	ENDDO
1543
1544	lad_w(pch_index,:,:) = 0.0
1545	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1546
1547	CALL exchange_horiz( lad_u, nbgp )
1548	CALL exchange_horiz( lad_v, nbgp )
1549	CALL exchange_horiz( lad_w, nbgp )
1550
1551	!
1552	!-- Initialisation of the canopy heat source distribution
1553	IF ( cthf /= 0.0 ) THEN
1554	!
1555	!-- Piecewise evaluation of the leaf area index by
1556	!-- integration of the leaf area density
1557	lai(:,:,:) = 0.0
1558	DO i = nxlg, nxrg
1559	DO j = nysg, nyng
1560	DO k = pch_index-1, 0, -1
1561	lai(k,j,i) = lai(k+1,j,i) + &
1562	( 0.5 * ( lad_w(k+1,j,i) + &
1563	lad_s(k+1,j,i) ) * &
1564	( zw(k+1) - zu(k+1) ) ) + &
1565	( 0.5 * ( lad_w(k,j,i) + &
1566	lad_s(k+1,j,i) ) * &
1567	( zu(k+1) - zw(k) ) )
1568	ENDDO
1569	ENDDO
1570	ENDDO
1571
1572	!
1573	!-- Evaluation of the upward kinematic vertical heat flux within the
1574	!-- canopy
1575	DO i = nxlg, nxrg
1576	DO j = nysg, nyng
1577	DO k = 0, pch_index
1578	canopy_heat_flux(k,j,i) = cthf * &
1579	exp( -0.6 * lai(k,j,i) )
1580	ENDDO
1581	ENDDO
1582	ENDDO
1583
1584	!
1585	!-- The near surface heat flux is derived from the heat flux
1586	!-- distribution within the canopy
1587	shf(:,:) = canopy_heat_flux(0,:,:)
1588
1589	ENDIF
1590
1591	ENDIF
1592
1593	!
1594	!-- If required, initialize dvrp-software
1595	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
1596
1597	IF ( ocean ) THEN
1598	!
1599	!-- Initialize quantities needed for the ocean model
1600	CALL init_ocean
1601
1602	ELSE
1603	!
1604	!-- Initialize quantities for handling cloud physics
1605	!-- This routine must be called before lpm_init, because
1606	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1607	!-- lpm_init) is not defined.
1608	CALL init_cloud_physics
1609	ENDIF
1610
1611	!
1612	!-- If required, initialize particles
1613	IF ( particle_advection ) CALL lpm_init
1614
1615	!
1616	!-- Initialize the ws-scheme.
1617	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1618
1619	!
1620	!-- Setting weighting factors for calculation of perturbation pressure
1621	!-- and turbulent quantities from the RK substeps
1622	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1623
1624	weight_substep(1) = 1./6.
1625	weight_substep(2) = 3./10.
1626	weight_substep(3) = 8./15.
1627
1628	weight_pres(1) = 1./3.
1629	weight_pres(2) = 5./12.
1630	weight_pres(3) = 1./4.
1631
1632	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1633
1634	weight_substep(1) = 1./2.
1635	weight_substep(2) = 1./2.
1636
1637	weight_pres(1) = 1./2.
1638	weight_pres(2) = 1./2.
1639
1640	ELSE ! for Euler-method
1641
1642	weight_substep(1) = 1.0
1643	weight_pres(1) = 1.0
1644
1645	ENDIF
1646
1647	!
1648	!-- Initialize Rayleigh damping factors
1649	rdf = 0.0
1650	rdf_sc = 0.0
1651	IF ( rayleigh_damping_factor /= 0.0 ) THEN
1652	IF ( .NOT. ocean ) THEN
1653	DO k = nzb+1, nzt
1654	IF ( zu(k) >= rayleigh_damping_height ) THEN
1655	rdf(k) = rayleigh_damping_factor * &
1656	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
1657	/ ( zu(nzt) - rayleigh_damping_height ) )&
1658	)**2
1659	ENDIF
1660	ENDDO
1661	ELSE
1662	DO k = nzt, nzb+1, -1
1663	IF ( zu(k) <= rayleigh_damping_height ) THEN
1664	rdf(k) = rayleigh_damping_factor * &
1665	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
1666	/ ( rayleigh_damping_height - zu(nzb+1)))&
1667	)**2
1668	ENDIF
1669	ENDDO
1670	ENDIF
1671	ENDIF
1672	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1673
1674	!
1675	!-- Initialize the starting level and the vertical smoothing factor used for
1676	!-- the external pressure gradient
1677	dp_smooth_factor = 1.0
1678	IF ( dp_external ) THEN
1679	!
1680	!-- Set the starting level dp_level_ind_b only if it has not been set before
1681	!-- (e.g. in init_grid).
1682	IF ( dp_level_ind_b == 0 ) THEN
1683	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1684	dp_level_ind_b = ind_array(1) - 1 + nzb
1685	! MINLOC uses lower array bound 1
1686	ENDIF
1687	IF ( dp_smooth ) THEN
1688	dp_smooth_factor(:dp_level_ind_b) = 0.0
1689	DO k = dp_level_ind_b+1, nzt
1690	dp_smooth_factor(k) = 0.5 * ( 1.0 + SIN( pi * &
1691	( REAL( k - dp_level_ind_b ) / &
1692	REAL( nzt - dp_level_ind_b ) - 0.5 ) ) )
1693	ENDDO
1694	ENDIF
1695	ENDIF
1696
1697	!
1698	!-- Initialize damping zone for the potential temperature in case of
1699	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1700	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1701	ptdf_x = 0.0
1702	ptdf_y = 0.0
1703	IF ( bc_lr_dirrad ) THEN
1704	DO i = nxl, nxr
1705	IF ( ( i * dx ) < pt_damping_width ) THEN
1706	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5 * &
1707	REAL( pt_damping_width - i * dx ) / ( &
1708	REAL( pt_damping_width ) ) ) )**2
1709	ENDIF
1710	ENDDO
1711	ELSEIF ( bc_lr_raddir ) THEN
1712	DO i = nxl, nxr
1713	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1714	ptdf_x(i) = pt_damping_factor * &
1715	SIN( pi * 0.5 * ( ( i - nx ) * dx + pt_damping_width ) / &
1716	REAL( pt_damping_width ) )**2
1717	ENDIF
1718	ENDDO
1719	ELSEIF ( bc_ns_dirrad ) THEN
1720	DO j = nys, nyn
1721	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1722	ptdf_y(j) = pt_damping_factor * &
1723	SIN( pi * 0.5 * ( ( j - ny ) * dy + pt_damping_width ) / &
1724	REAL( pt_damping_width ) )**2
1725	ENDIF
1726	ENDDO
1727	ELSEIF ( bc_ns_raddir ) THEN
1728	DO j = nys, nyn
1729	IF ( ( j * dy ) < pt_damping_width ) THEN
1730	ptdf_y(j) = pt_damping_factor * &
1731	SIN( pi * 0.5 * ( pt_damping_width - j * dy ) / &
1732	REAL( pt_damping_width ) )**2
1733	ENDIF
1734	ENDDO
1735	ENDIF
1736
1737	!
1738	!-- Initialize local summation arrays for routine flow_statistics.
1739	!-- This is necessary because they may not yet have been initialized when they
1740	!-- are called from flow_statistics (or - depending on the chosen model run -
1741	!-- are never initialized)
1742	sums_divnew_l = 0.0
1743	sums_divold_l = 0.0
1744	sums_l_l = 0.0
1745	sums_up_fraction_l = 0.0
1746	sums_wsts_bc_l = 0.0
1747
1748	!
1749	!-- Pre-set masks for regional statistics. Default is the total model domain.
1750	!-- Ghost points are excluded because counting values at the ghost boundaries
1751	!-- would bias the statistics
1752	rmask = 1.0
1753	rmask(:,nxlg:nxl-1,:) = 0.0; rmask(:,nxr+1:nxrg,:) = 0.0
1754	rmask(nysg:nys-1,:,:) = 0.0; rmask(nyn+1:nyng,:,:) = 0.0
1755
1756	!
1757	!-- User-defined initializing actions. Check afterwards, if maximum number
1758	!-- of allowed timeseries is exceeded
1759	CALL user_init
1760
1761	IF ( dots_num > dots_max ) THEN
1762	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1763	' its maximum of dots_max = ', dots_max, &
1764	' &Please increase dots_max in modules.f90.'
1765	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1766	ENDIF
1767
1768	!
1769	!-- Input binary data file is not needed anymore. This line must be placed
1770	!-- after call of user_init!
1771	CALL close_file( 13 )
1772
1773	!
1774	!-- Compute total sum of active mask grid points
1775	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1776	!-- total domain
1777	!-- ngp_3d: number of grid points of the total domain
1778	ngp_2dh_outer_l = 0
1779	ngp_2dh_outer = 0
1780	ngp_2dh_s_inner_l = 0
1781	ngp_2dh_s_inner = 0
1782	ngp_2dh_l = 0
1783	ngp_2dh = 0
1784	ngp_3d_inner_l = 0.0
1785	ngp_3d_inner = 0
1786	ngp_3d = 0
1787	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1788
1789	DO sr = 0, statistic_regions
1790	DO i = nxl, nxr
1791	DO j = nys, nyn
1792	IF ( rmask(j,i,sr) == 1.0 ) THEN
1793	!
1794	!-- All xy-grid points
1795	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1796	!
1797	!-- xy-grid points above topography
1798	DO k = nzb_s_outer(j,i), nz + 1
1799	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1800	ENDDO
1801	DO k = nzb_s_inner(j,i), nz + 1
1802	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1803	ENDDO
1804	!
1805	!-- All grid points of the total domain above topography
1806	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1807	( nz - nzb_s_inner(j,i) + 2 )
1808	ENDIF
1809	ENDDO
1810	ENDDO
1811	ENDDO
1812
1813	sr = statistic_regions + 1
1814	#if defined( __parallel )
1815	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1816	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1817	comm2d, ierr )
1818	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1819	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1820	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1821	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1822	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1823	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1824	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1825	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1826	MPI_SUM, comm2d, ierr )
1827	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1828	#else
1829	ngp_2dh = ngp_2dh_l
1830	ngp_2dh_outer = ngp_2dh_outer_l
1831	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1832	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1833	#endif
1834
1835	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1836	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1837
1838	!
1839	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1840	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1841	!-- the respective subdomain lie below the surface topography
1842	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1843	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1844	ngp_3d_inner(:) )
1845	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1846
1847	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1848
1849
1850	END SUBROUTINE init_3d_model

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