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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1213

Last change on this file since 1213 was 1213, 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 1213 2013-08-15 09:03:50Z raasch $
30	!
31	! 1212 2013-08-15 08:46:27Z raasch
32	! array tri is allocated and included in data copy statement
33	!
34	! 1195 2013-07-01 12:27:57Z heinze
35	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
36	!
37	! 1179 2013-06-14 05:57:58Z raasch
38	! allocate and set ref_state to be used in buoyancy terms
39	!
40	! 1171 2013-05-30 11:27:45Z raasch
41	! diss array is allocated with full size if accelerator boards are used
42	!
43	! 1159 2013-05-21 11:58:22Z fricke
44	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
45	!
46	! 1153 2013-05-10 14:33:08Z raasch
47	! diss array is allocated with dummy elements even if it is not needed
48	! (required by PGI 13.4 / CUDA 5.0)
49	!
50	! 1115 2013-03-26 18:16:16Z hoffmann
51	! unused variables removed
52	!
53	! 1113 2013-03-10 02:48:14Z raasch
54	! openACC directive modified
55	!
56	! 1111 2013-03-08 23:54:10Z raasch
57	! openACC directives added for pres
58	! array diss allocated only if required
59	!
60	! 1092 2013-02-02 11:24:22Z raasch
61	! unused variables removed
62	!
63	! 1065 2012-11-22 17:42:36Z hoffmann
64	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
65	!
66	! 1053 2012-11-13 17:11:03Z hoffmann
67	! allocation and initialisation of necessary data arrays for the two-moment
68	! cloud physics scheme the two new prognostic equations (nr, qr):
69	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
70	! +tend_*, prr
71	!
72	! 1036 2012-10-22 13:43:42Z raasch
73	! code put under GPL (PALM 3.9)
74	!
75	! 1032 2012-10-21 13:03:21Z letzel
76	! save memory by not allocating pt_2 in case of neutral = .T.
77	!
78	! 1025 2012-10-07 16:04:41Z letzel
79	! bugfix: swap indices of mask for ghost boundaries
80	!
81	! 1015 2012-09-27 09:23:24Z raasch
82	! mask is set to zero for ghost boundaries
83	!
84	! 1010 2012-09-20 07:59:54Z raasch
85	! cpp switch __nopointer added for pointer free version
86	!
87	! 1003 2012-09-14 14:35:53Z raasch
88	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
89	!
90	! 1001 2012-09-13 14:08:46Z raasch
91	! all actions concerning leapfrog scheme removed
92	!
93	! 996 2012-09-07 10:41:47Z raasch
94	! little reformatting
95	!
96	! 978 2012-08-09 08:28:32Z fricke
97	! outflow damping layer removed
98	! roughness length for scalar quantites z0h added
99	! damping zone for the potential temperatur in case of non-cyclic lateral
100	! boundaries added
101	! initialization of ptdf_x, ptdf_y
102	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
103	!
104	! 849 2012-03-15 10:35:09Z raasch
105	! init_particles renamed lpm_init
106	!
107	! 825 2012-02-19 03:03:44Z raasch
108	! wang_collision_kernel renamed wang_kernel
109	!
110	! 790 2011-11-29 03:11:20Z raasch
111	! diss is also allocated in case that the Wang kernel is used
112	!
113	! 787 2011-11-28 12:49:05Z heinze $
114	! bugfix: call init_advec in every case - not only for inital runs
115	!
116	! 785 2011-11-28 09:47:19Z raasch
117	! initialization of rdf_sc
118	!
119	! 767 2011-10-14 06:39:12Z raasch
120	! adjustments concerning implementation of prescribed u,v-profiles
121	! bugfix: dirichlet_0 conditions for ug/vg moved to check_parameters
122	!
123	! 759 2011-09-15 13:58:31Z raasch
124	! Splitting of parallel I/O in blocks of PEs
125	! Bugfix: No zero assignments to volume_flow_initial and volume_flow_area in
126	! case of normal restart runs.
127	!
128	! 713 2011-03-30 14:21:21Z suehring
129	! weight_substep and weight_pres are given as fractions.
130	!
131	! 709 2011-03-30 09:31:40Z raasch
132	! formatting adjustments
133	!
134	! 707 2011-03-29 11:39:40Z raasch
135	! p_sub renamed p_loc and allocated depending on the chosen pressure solver,
136	! initial assignments of zero to array p for iterative solvers only,
137	! bc_lr/ns replaced by bc_lr/ns_dirrad/raddir
138	!
139	! 680 2011-02-04 23:16:06Z gryschka
140	! bugfix: volume_flow_control
141	!
142	! 673 2011-01-18 16:19:48Z suehring
143	! weight_substep (moved from advec_ws) and weight_pres added.
144	! Allocate p_sub when using Multigrid or SOR solver.
145	! Call of ws_init moved behind the if requests.
146	!
147	! 667 2010-12-23 12:06:00Z suehring/gryschka
148	! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng in loops and
149	! allocation of arrays. Calls of exchange_horiz are modified.
150	! Call ws_init to initialize arrays needed for calculating statisticas and for
151	! optimization when ws-scheme is used.
152	! Initial volume flow is now calculated by using the variable hom_sum.
153	! Therefore the correction of initial volume flow for non-flat topography
154	! removed (removed u_nzb_p1_for_vfc and v_nzb_p1_for_vfc)
155	! Changed surface boundary conditions for u and v in case of ibc_uv_b == 0 from
156	! mirror to Dirichlet boundary conditions (u=v=0), so that k=nzb is
157	! representative for the height z0.
158	! Bugfix: type conversion of '1' to 64bit for the MAX function (ngp_3d_inner)
159	!
160	! 622 2010-12-10 08:08:13Z raasch
161	! optional barriers included in order to speed up collective operations
162	!
163	! 560 2010-09-09 10:06:09Z weinreis
164	! bugfix: correction of calculating ngp_3d for 64 bit
165	!
166	! 485 2010-02-05 10:57:51Z raasch
167	! calculation of ngp_3d + ngp_3d_inner changed because they have now 64 bit
168	!
169	! 407 2009-12-01 15:01:15Z maronga
170	! var_ts is replaced by dots_max
171	! Enabled passive scalar/humidity wall fluxes for non-flat topography
172	!
173	! 388 2009-09-23 09:40:33Z raasch
174	! Initialization of prho added.
175	! bugfix: correction of initial volume flow for non-flat topography
176	! bugfix: zero initialization of arrays within buildings for 'cyclic_fill'
177	! bugfix: avoid that ngp_2dh_s_inner becomes zero
178	! initializing_actions='read_data_for_recycling' renamed to 'cyclic_fill', now
179	! independent of turbulent_inflow
180	! Output of messages replaced by message handling routine.
181	! Set the starting level and the vertical smoothing factor used for
182	! the external pressure gradient
183	! +conserve_volume_flow_mode: 'default', 'initial_profiles', 'inflow_profile'
184	! and 'bulk_velocity'
185	! If the inversion height calculated by the prerun is zero,
186	! inflow_damping_height must be explicitly specified.
187	!
188	! 181 2008-07-30 07:07:47Z raasch
189	! bugfix: zero assignments to tendency arrays in case of restarts,
190	! further extensions and modifications in the initialisation of the plant
191	! canopy model,
192	! allocation of hom_sum moved to parin, initialization of spectrum_x\|y directly
193	! after allocating theses arrays,
194	! read data for recycling added as new initialization option,
195	! dummy allocation for diss
196	!
197	! 138 2007-11-28 10:03:58Z letzel
198	! New counter ngp_2dh_s_inner.
199	! Allow new case bc_uv_t = 'dirichlet_0' for channel flow.
200	! Corrected calculation of initial volume flow for 'set_1d-model_profiles' and
201	! 'set_constant_profiles' in case of buildings in the reference cross-sections.
202	!
203	! 108 2007-08-24 15:10:38Z letzel
204	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
205	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
206	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
207	! Rayleigh damping for ocean, optionally calculate km and kh from initial
208	! TKE e_init
209	!
210	! 97 2007-06-21 08:23:15Z raasch
211	! Initialization of salinity, call of init_ocean
212	!
213	! 87 2007-05-22 15:46:47Z raasch
214	! var_hom and var_sum renamed pr_palm
215	!
216	! 75 2007-03-22 09:54:05Z raasch
217	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
218	! bugfix for cases with the outflow damping layer extending over more than one
219	! subdomain, moisture renamed humidity,
220	! new initializing action "by_user" calls user_init_3d_model,
221	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
222	! initial velocities at nzb+1 are regarded for volume
223	! flow control in case they have been set zero before (to avoid small timesteps)
224	! -uvmean_outflow, uxrp, vynp eliminated
225	!
226	! 19 2007-02-23 04:53:48Z raasch
227	! +handling of top fluxes
228	!
229	! RCS Log replace by Id keyword, revision history cleaned up
230	!
231	! Revision 1.49 2006/08/22 15:59:07 raasch
232	! No optimization of this file on the ibmy (Yonsei Univ.)
233	!
234	! Revision 1.1 1998/03/09 16:22:22 raasch
235	! Initial revision
236	!
237	!
238	! Description:
239	! ------------
240	! Allocation of arrays and initialization of the 3D model via
241	! a) pre-run the 1D model
242	! or
243	! b) pre-set constant linear profiles
244	! or
245	! c) read values of a previous run
246	!------------------------------------------------------------------------------!
247
248	USE advec_ws
249	USE arrays_3d
250	USE averaging
251	USE cloud_parameters
252	USE constants
253	USE control_parameters
254	USE cpulog
255	USE grid_variables
256	USE indices
257	USE interfaces
258	USE model_1d
259	USE netcdf_control
260	USE particle_attributes
261	USE pegrid
262	USE profil_parameter
263	USE random_function_mod
264	USE statistics
265	USE transpose_indices
266
267	IMPLICIT NONE
268
269	INTEGER :: i, ind_array(1), j, k, sr
270
271	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l
272
273	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l, &
274	ngp_2dh_s_inner_l
275
276	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
277
278	REAL, DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l, ngp_3d_inner_tmp
279
280
281	!
282	!-- Allocate arrays
283	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
284	ngp_3d(0:statistic_regions), &
285	ngp_3d_inner(0:statistic_regions), &
286	ngp_3d_inner_l(0:statistic_regions), &
287	ngp_3d_inner_tmp(0:statistic_regions), &
288	sums_divnew_l(0:statistic_regions), &
289	sums_divold_l(0:statistic_regions) )
290	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
291	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
292	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
293	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
294	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
295	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
296	sums(nzb:nzt+1,pr_palm+max_pr_user), &
297	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
298	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
299	sums_up_fraction_l(10,3,0:statistic_regions), &
300	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
301	ts_value(dots_max,0:statistic_regions) )
302	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
303
304	ALLOCATE( rif(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
305	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
306	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
307	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
308	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
309	z0h(nysg:nyng,nxlg:nxrg) )
310
311	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
312	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
313	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
314	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
315	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
316
317	#if defined( __nopointer )
318	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
319	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
320	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
321	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
322	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
323	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
324	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
325	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
326	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
327	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
328	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
329	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
330	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
331	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
332	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
333	#else
334	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
335	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
336	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
337	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
338	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
339	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
340	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
341	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
342	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
343	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
344	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
345	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
346	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
347	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
348	IF ( .NOT. neutral ) THEN
349	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
350	ENDIF
351	#endif
352
353	!
354	!-- Following array is required for perturbation pressure within the iterative
355	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
356	!-- the weighted average of the substeps and cannot be used in the Poisson
357	!-- solver.
358	IF ( psolver == 'sor' ) THEN
359	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
360	ELSEIF ( psolver == 'multigrid' ) THEN
361	!
362	!-- For performance reasons, multigrid is using one ghost layer only
363	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
364	ENDIF
365
366	!
367	!-- Array for storing constant coeffficients of the tridiagonal solver
368	IF ( psolver == 'poisfft' ) THEN
369	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
370	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
371	ENDIF
372
373	IF ( humidity .OR. passive_scalar ) THEN
374	!
375	!-- 2D-humidity/scalar arrays
376	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
377	qsws(nysg:nyng,nxlg:nxrg), &
378	qswst(nysg:nyng,nxlg:nxrg) )
379
380	!
381	!-- 3D-humidity/scalar arrays
382	#if defined( __nopointer )
383	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
384	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
385	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
386	#else
387	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
388	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
389	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
390	#endif
391
392	!
393	!-- 3D-arrays needed for humidity only
394	IF ( humidity ) THEN
395	#if defined( __nopointer )
396	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
397	#else
398	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
399	#endif
400
401	IF ( cloud_physics ) THEN
402
403	!
404	!-- Liquid water content
405	#if defined( __nopointer )
406	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
407	#else
408	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
409	#endif
410	!
411	!-- Precipitation amount and rate (only needed if output is switched)
412	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
413	precipitation_rate(nysg:nyng,nxlg:nxrg) )
414
415	IF ( icloud_scheme == 0 ) THEN
416	!
417	!-- 1D-arrays
418	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
419	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
420	!
421	!-- 3D-cloud water content
422	#if defined( __nopointer )
423	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
424	#else
425	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
426	#endif
427	!
428	!-- 3D-tendency arrays
429	ALLOCATE( tend_pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
430	tend_q(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
431
432	IF ( precipitation ) THEN
433	!
434	!-- 1D-arrays
435	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
436	!
437	!
438	!-- 3D-tendency arrays
439	ALLOCATE( tend_nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
440	tend_qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
441	!
442	!-- 2D-rain water content and rain drop concentration arrays
443	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
444	qrsws(nysg:nyng,nxlg:nxrg), &
445	qrswst(nysg:nyng,nxlg:nxrg), &
446	nrs(nysg:nyng,nxlg:nxrg), &
447	nrsws(nysg:nyng,nxlg:nxrg), &
448	nrswst(nysg:nyng,nxlg:nxrg) )
449	!
450	!-- 3D-rain water content, rain drop concentration arrays
451	#if defined( __nopointer )
452	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
453	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
454	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
455	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
456	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
457	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
458	#else
459	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
460	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
461	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
462	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
463	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
464	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
465	#endif
466	!
467	!-- 3d-precipitation rate
468	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
469	ENDIF
470
471	ENDIF
472	ENDIF
473
474	IF ( cloud_droplets ) THEN
475	!
476	!-- Liquid water content, change in liquid water content
477	#if defined( __nopointer )
478	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
479	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
480	#else
481	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
482	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
483	#endif
484	!
485	!-- Real volume of particles (with weighting), volume of particles
486	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
487	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
488	ENDIF
489
490	ENDIF
491
492	ENDIF
493
494	IF ( ocean ) THEN
495	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
496	saswst(nysg:nyng,nxlg:nxrg) )
497	#if defined( __nopointer )
498	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
499	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
500	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
501	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
502	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
503	#else
504	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
505	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
506	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
507	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
508	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
509	prho => prho_1
510	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
511	! density to be apointer
512	#endif
513	IF ( humidity_remote ) THEN
514	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
515	qswst_remote = 0.0
516	ENDIF
517	ENDIF
518
519	!
520	!-- 3D-array for storing the dissipation, needed for calculating the sgs
521	!-- particle velocities
522	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence .OR. &
523	num_acc_per_node > 0 ) THEN
524	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
525	ENDIF
526
527	IF ( dt_dosp /= 9999999.9 ) THEN
528	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
529	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
530	spectrum_x = 0.0
531	spectrum_y = 0.0
532	ENDIF
533
534	!
535	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
536	IF ( plant_canopy ) THEN
537	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
538	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
539	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
540	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
541	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
542
543	IF ( passive_scalar ) THEN
544	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
545	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
546	ENDIF
547
548	IF ( cthf /= 0.0 ) THEN
549	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
550	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
551	ENDIF
552
553	ENDIF
554
555	!
556	!-- 4D-array for storing the Rif-values at vertical walls
557	IF ( topography /= 'flat' ) THEN
558	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
559	rif_wall = 0.0
560	ENDIF
561
562	!
563	!-- Arrays to store velocity data from t-dt and the phase speeds which
564	!-- are needed for radiation boundary conditions
565	IF ( outflow_l ) THEN
566	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
567	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
568	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
569	ENDIF
570	IF ( outflow_r ) THEN
571	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
572	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
573	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
574	ENDIF
575	IF ( outflow_l .OR. outflow_r ) THEN
576	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
577	c_w(nzb:nzt+1,nysg:nyng) )
578	ENDIF
579	IF ( outflow_s ) THEN
580	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
581	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
582	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
583	ENDIF
584	IF ( outflow_n ) THEN
585	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
586	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
587	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
588	ENDIF
589	IF ( outflow_s .OR. outflow_n ) THEN
590	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
591	c_w(nzb:nzt+1,nxlg:nxrg) )
592	ENDIF
593	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
594	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
595	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
596	ENDIF
597
598
599	#if ! defined( __nopointer )
600	!
601	!-- Initial assignment of the pointers
602	e => e_1; e_p => e_2; te_m => e_3
603	IF ( .NOT. neutral ) THEN
604	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
605	ELSE
606	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
607	ENDIF
608	u => u_1; u_p => u_2; tu_m => u_3
609	v => v_1; v_p => v_2; tv_m => v_3
610	w => w_1; w_p => w_2; tw_m => w_3
611
612	IF ( humidity .OR. passive_scalar ) THEN
613	q => q_1; q_p => q_2; tq_m => q_3
614	IF ( humidity ) THEN
615	vpt => vpt_1
616	IF ( cloud_physics ) THEN
617	ql => ql_1
618	IF ( icloud_scheme == 0 ) THEN
619	qc => qc_1
620	IF ( precipitation ) THEN
621	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
622	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
623	ENDIF
624	ENDIF
625	ENDIF
626	ENDIF
627	IF ( cloud_droplets ) THEN
628	ql => ql_1
629	ql_c => ql_2
630	ENDIF
631	ENDIF
632
633	IF ( ocean ) THEN
634	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
635	ENDIF
636	#endif
637
638	!
639	!-- Allocate arrays containing the RK coefficient for calculation of
640	!-- perturbation pressure and turbulent fluxes. At this point values are
641	!-- set for pressure calculation during initialization (where no timestep
642	!-- is done). Further below the values needed within the timestep scheme
643	!-- will be set.
644	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
645	weight_pres(1:intermediate_timestep_count_max) )
646	weight_substep = 1.0
647	weight_pres = 1.0
648	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
649
650	!
651	!-- Initialize model variables
652	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
653	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
654	!
655	!-- First model run of a possible job queue.
656	!-- Initial profiles of the variables must be computes.
657	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
658	!
659	!-- Use solutions of the 1D model as initial profiles,
660	!-- start 1D model
661	CALL init_1d_model
662	!
663	!-- Transfer initial profiles to the arrays of the 3D model
664	DO i = nxlg, nxrg
665	DO j = nysg, nyng
666	e(:,j,i) = e1d
667	kh(:,j,i) = kh1d
668	km(:,j,i) = km1d
669	pt(:,j,i) = pt_init
670	u(:,j,i) = u1d
671	v(:,j,i) = v1d
672	ENDDO
673	ENDDO
674
675	IF ( humidity .OR. passive_scalar ) THEN
676	DO i = nxlg, nxrg
677	DO j = nysg, nyng
678	q(:,j,i) = q_init
679	ENDDO
680	ENDDO
681	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
682	precipitation ) THEN
683	DO i = nxlg, nxrg
684	DO j = nysg, nyng
685	qr(:,j,i) = 0.0
686	nr(:,j,i) = 0.0
687	ENDDO
688	ENDDO
689	!
690	!-- Initialze nc_1d with default value
691	nc_1d(:) = nc_const
692
693	ENDIF
694	ENDIF
695
696	IF ( .NOT. constant_diffusion ) THEN
697	DO i = nxlg, nxrg
698	DO j = nysg, nyng
699	e(:,j,i) = e1d
700	ENDDO
701	ENDDO
702	!
703	!-- Store initial profiles for output purposes etc.
704	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
705
706	IF ( prandtl_layer ) THEN
707	rif = rif1d(nzb+1)
708	ts = 0.0 ! could actually be computed more accurately in the
709	! 1D model. Update when opportunity arises.
710	us = us1d
711	usws = usws1d
712	vsws = vsws1d
713	ELSE
714	ts = 0.0 ! must be set, because used in
715	rif = 0.0 ! flowste
716	us = 0.0
717	usws = 0.0
718	vsws = 0.0
719	ENDIF
720
721	ELSE
722	e = 0.0 ! must be set, because used in
723	rif = 0.0 ! flowste
724	ts = 0.0
725	us = 0.0
726	usws = 0.0
727	vsws = 0.0
728	ENDIF
729	uswst = top_momentumflux_u
730	vswst = top_momentumflux_v
731
732	!
733	!-- In every case qs = 0.0 (see also pt)
734	!-- This could actually be computed more accurately in the 1D model.
735	!-- Update when opportunity arises!
736	IF ( humidity .OR. passive_scalar ) THEN
737	qs = 0.0
738	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
739	precipitation ) THEN
740	qrs = 0.0
741	nrs = 0.0
742	ENDIF
743	ENDIF
744
745	!
746	!-- inside buildings set velocities back to zero
747	IF ( topography /= 'flat' ) THEN
748	DO i = nxl-1, nxr+1
749	DO j = nys-1, nyn+1
750	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
751	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
752	ENDDO
753	ENDDO
754
755	!
756	!-- WARNING: The extra boundary conditions set after running the
757	!-- ------- 1D model impose an error on the divergence one layer
758	!-- below the topography; need to correct later
759	!-- ATTENTION: Provisional correction for Piacsek & Williams
760	!-- --------- advection scheme: keep u and v zero one layer below
761	!-- the topography.
762	IF ( ibc_uv_b == 1 ) THEN
763	!
764	!-- Neumann condition
765	DO i = nxl-1, nxr+1
766	DO j = nys-1, nyn+1
767	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
768	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
769	ENDDO
770	ENDDO
771
772	ENDIF
773
774	ENDIF
775
776	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
777	THEN
778	!
779	!-- Use constructed initial profiles (velocity constant with height,
780	!-- temperature profile with constant gradient)
781	DO i = nxlg, nxrg
782	DO j = nysg, nyng
783	pt(:,j,i) = pt_init
784	u(:,j,i) = u_init
785	v(:,j,i) = v_init
786	ENDDO
787	ENDDO
788
789	!
790	!-- Set initial horizontal velocities at the lowest computational grid
791	!-- levels to zero in order to avoid too small time steps caused by the
792	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
793	!-- in the limiting formula!). The original values are stored to be later
794	!-- used for volume flow control.
795	DO i = nxlg, nxrg
796	DO j = nysg, nyng
797	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
798	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
799	ENDDO
800	ENDDO
801
802	IF ( humidity .OR. passive_scalar ) THEN
803	DO i = nxlg, nxrg
804	DO j = nysg, nyng
805	q(:,j,i) = q_init
806	ENDDO
807	ENDDO
808	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
809	!
810	!-- Initialze nc_1d with default value
811	nc_1d(:) = nc_const
812
813	IF ( precipitation ) THEN
814	DO i = nxlg, nxrg
815	DO j = nysg, nyng
816	qr(:,j,i) = 0.0
817	nr(:,j,i) = 0.0
818	ENDDO
819	ENDDO
820	ENDIF
821
822	ENDIF
823	ENDIF
824
825	IF ( ocean ) THEN
826	DO i = nxlg, nxrg
827	DO j = nysg, nyng
828	sa(:,j,i) = sa_init
829	ENDDO
830	ENDDO
831	ENDIF
832
833	IF ( constant_diffusion ) THEN
834	km = km_constant
835	kh = km / prandtl_number
836	e = 0.0
837	ELSEIF ( e_init > 0.0 ) THEN
838	DO k = nzb+1, nzt
839	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
840	ENDDO
841	km(nzb,:,:) = km(nzb+1,:,:)
842	km(nzt+1,:,:) = km(nzt,:,:)
843	kh = km / prandtl_number
844	e = e_init
845	ELSE
846	IF ( .NOT. ocean ) THEN
847	kh = 0.01 ! there must exist an initial diffusion, because
848	km = 0.01 ! otherwise no TKE would be produced by the
849	! production terms, as long as not yet
850	! e = (u/cm)*2 at k=nzb+1
851	ELSE
852	kh = 0.00001
853	km = 0.00001
854	ENDIF
855	e = 0.0
856	ENDIF
857	rif = 0.0
858	ts = 0.0
859	us = 0.0
860	usws = 0.0
861	uswst = top_momentumflux_u
862	vsws = 0.0
863	vswst = top_momentumflux_v
864	IF ( humidity .OR. passive_scalar ) qs = 0.0
865
866	!
867	!-- Compute initial temperature field and other constants used in case
868	!-- of a sloping surface
869	IF ( sloping_surface ) CALL init_slope
870
871	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
872	THEN
873	!
874	!-- Initialization will completely be done by the user
875	CALL user_init_3d_model
876
877	ENDIF
878	!
879	!-- Bottom boundary
880	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
881	u(nzb,:,:) = 0.0
882	v(nzb,:,:) = 0.0
883	ENDIF
884
885	!
886	!-- Apply channel flow boundary condition
887	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
888	u(nzt+1,:,:) = 0.0
889	v(nzt+1,:,:) = 0.0
890	ENDIF
891
892	!
893	!-- Calculate virtual potential temperature
894	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
895
896	!
897	!-- Store initial profiles for output purposes etc.
898	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
899	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
900	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
901	hom(nzb,1,5,:) = 0.0
902	hom(nzb,1,6,:) = 0.0
903	ENDIF
904	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
905	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
906	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
907
908	IF ( ocean ) THEN
909	!
910	!-- Store initial salinity profile
911	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
912	ENDIF
913
914	IF ( humidity ) THEN
915	!
916	!-- Store initial profile of total water content, virtual potential
917	!-- temperature
918	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
919	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
920	IF ( cloud_physics .OR. cloud_droplets ) THEN
921	!
922	!-- Store initial profile of specific humidity and potential
923	!-- temperature
924	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
925	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
926	ENDIF
927	ENDIF
928
929	IF ( passive_scalar ) THEN
930	!
931	!-- Store initial scalar profile
932	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
933	ENDIF
934
935	!
936	!-- Initialize fluxes at bottom surface
937	IF ( use_surface_fluxes ) THEN
938
939	IF ( constant_heatflux ) THEN
940	!
941	!-- Heat flux is prescribed
942	IF ( random_heatflux ) THEN
943	CALL disturb_heatflux
944	ELSE
945	shf = surface_heatflux
946	!
947	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
948	IF ( TRIM( topography ) /= 'flat' ) THEN
949	DO i = nxlg, nxrg
950	DO j = nysg, nyng
951	IF ( nzb_s_inner(j,i) /= 0 ) THEN
952	shf(j,i) = wall_heatflux(0)
953	ENDIF
954	ENDDO
955	ENDDO
956	ENDIF
957	ENDIF
958	ENDIF
959
960	!
961	!-- Determine the near-surface water flux
962	IF ( humidity .OR. passive_scalar ) THEN
963	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
964	precipitation ) THEN
965	qrsws = 0.0
966	nrsws = 0.0
967	ENDIF
968	IF ( constant_waterflux ) THEN
969	qsws = surface_waterflux
970	!
971	!-- Over topography surface_waterflux is replaced by
972	!-- wall_humidityflux(0)
973	IF ( TRIM( topography ) /= 'flat' ) THEN
974	wall_qflux = wall_humidityflux
975	DO i = nxlg, nxrg
976	DO j = nysg, nyng
977	IF ( nzb_s_inner(j,i) /= 0 ) THEN
978	qsws(j,i) = wall_qflux(0)
979	ENDIF
980	ENDDO
981	ENDDO
982	ENDIF
983	ENDIF
984	ENDIF
985
986	ENDIF
987
988	!
989	!-- Initialize fluxes at top surface
990	!-- Currently, only the heatflux and salinity flux can be prescribed.
991	!-- The latent flux is zero in this case!
992	IF ( use_top_fluxes ) THEN
993
994	IF ( constant_top_heatflux ) THEN
995	!
996	!-- Heat flux is prescribed
997	tswst = top_heatflux
998
999	IF ( humidity .OR. passive_scalar ) THEN
1000	qswst = 0.0
1001	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1002	precipitation ) THEN
1003	nrswst = 0.0
1004	qrswst = 0.0
1005	ENDIF
1006	ENDIF
1007
1008	IF ( ocean ) THEN
1009	saswsb = bottom_salinityflux
1010	saswst = top_salinityflux
1011	ENDIF
1012	ENDIF
1013
1014	!
1015	!-- Initialization in case of a coupled model run
1016	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1017	tswst = 0.0
1018	ENDIF
1019
1020	ENDIF
1021
1022	!
1023	!-- Initialize Prandtl layer quantities
1024	IF ( prandtl_layer ) THEN
1025
1026	z0 = roughness_length
1027	z0h = z0h_factor * z0
1028
1029	IF ( .NOT. constant_heatflux ) THEN
1030	!
1031	!-- Surface temperature is prescribed. Here the heat flux cannot be
1032	!-- simply estimated, because therefore rif, u* and theta* would have
1033	!-- to be computed by iteration. This is why the heat flux is assumed
1034	!-- to be zero before the first time step. It approaches its correct
1035	!-- value in the course of the first few time steps.
1036	shf = 0.0
1037	ENDIF
1038
1039	IF ( humidity .OR. passive_scalar ) THEN
1040	IF ( .NOT. constant_waterflux ) qsws = 0.0
1041	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1042	precipitation ) THEN
1043	qrsws = 0.0
1044	nrsws = 0.0
1045	ENDIF
1046	ENDIF
1047
1048	ENDIF
1049
1050	!
1051	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1052	!-- the reference state will be set (overwritten) in init_ocean)
1053	IF ( use_single_reference_value ) THEN
1054	IF ( .NOT. humidity ) THEN
1055	ref_state(:) = pt_reference
1056	ELSE
1057	ref_state(:) = vpt_reference
1058	ENDIF
1059	ELSE
1060	IF ( .NOT. humidity ) THEN
1061	ref_state(:) = pt_init(:)
1062	ELSE
1063	ref_state(:) = vpt(:,nys,nxl)
1064	ENDIF
1065	ENDIF
1066
1067	!
1068	!-- For the moment, vertical velocity is zero
1069	w = 0.0
1070
1071	!
1072	!-- Initialize array sums (must be defined in first call of pres)
1073	sums = 0.0
1074
1075	!
1076	!-- In case of iterative solvers, p must get an initial value
1077	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0
1078
1079	!
1080	!-- Treating cloud physics, liquid water content and precipitation amount
1081	!-- are zero at beginning of the simulation
1082	IF ( cloud_physics ) THEN
1083	ql = 0.0
1084	IF ( precipitation ) precipitation_amount = 0.0
1085	IF ( icloud_scheme == 0 ) THEN
1086	qc = 0.0
1087	nc_1d = nc_const
1088	ENDIF
1089	ENDIF
1090	!
1091	!-- Impose vortex with vertical axis on the initial velocity profile
1092	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1093	CALL init_rankine
1094	ENDIF
1095
1096	!
1097	!-- Impose temperature anomaly (advection test only)
1098	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1099	CALL init_pt_anomaly
1100	ENDIF
1101
1102	!
1103	!-- If required, change the surface temperature at the start of the 3D run
1104	IF ( pt_surface_initial_change /= 0.0 ) THEN
1105	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1106	ENDIF
1107
1108	!
1109	!-- If required, change the surface humidity/scalar at the start of the 3D
1110	!-- run
1111	IF ( ( humidity .OR. passive_scalar ) .AND. &
1112	q_surface_initial_change /= 0.0 ) THEN
1113	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1114	ENDIF
1115	!
1116	!-- Initialize the random number generator (from numerical recipes)
1117	CALL random_function_ini
1118
1119	!
1120	!-- Initialize old and new time levels.
1121	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1122	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1123
1124	IF ( humidity .OR. passive_scalar ) THEN
1125	tq_m = 0.0
1126	q_p = q
1127	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1128	precipitation ) THEN
1129	tqr_m = 0.0
1130	qr_p = qr
1131	tnr_m = 0.0
1132	nr_p = nr
1133	ENDIF
1134	ENDIF
1135
1136	IF ( ocean ) THEN
1137	tsa_m = 0.0
1138	sa_p = sa
1139	ENDIF
1140
1141
1142	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1143	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1144	THEN
1145	!
1146	!-- When reading data for cyclic fill of 3D prerun data files, read
1147	!-- some of the global variables from the restart file which are required
1148	!-- for initializing the inflow
1149	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1150
1151	DO i = 0, io_blocks-1
1152	IF ( i == io_group ) THEN
1153	CALL read_parts_of_var_list
1154	CALL close_file( 13 )
1155	ENDIF
1156	#if defined( __parallel )
1157	CALL MPI_BARRIER( comm2d, ierr )
1158	#endif
1159	ENDDO
1160
1161	ENDIF
1162
1163	!
1164	!-- Read binary data from restart file
1165	DO i = 0, io_blocks-1
1166	IF ( i == io_group ) THEN
1167	CALL read_3d_binary
1168	ENDIF
1169	#if defined( __parallel )
1170	CALL MPI_BARRIER( comm2d, ierr )
1171	#endif
1172	ENDDO
1173
1174	!
1175	!-- Initialization of the turbulence recycling method
1176	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1177	turbulent_inflow ) THEN
1178	!
1179	!-- First store the profiles to be used at the inflow.
1180	!-- These profiles are the (temporally) and horizontally averaged vertical
1181	!-- profiles from the prerun. Alternatively, prescribed profiles
1182	!-- for u,v-components can be used.
1183	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
1184
1185	IF ( use_prescribed_profile_data ) THEN
1186	mean_inflow_profiles(:,1) = u_init ! u
1187	mean_inflow_profiles(:,2) = v_init ! v
1188	ELSE
1189	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1190	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1191	ENDIF
1192	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1193	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1194
1195	!
1196	!-- If necessary, adjust the horizontal flow field to the prescribed
1197	!-- profiles
1198	IF ( use_prescribed_profile_data ) THEN
1199	DO i = nxlg, nxrg
1200	DO j = nysg, nyng
1201	DO k = nzb, nzt+1
1202	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1203	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1204	ENDDO
1205	ENDDO
1206	ENDDO
1207	ENDIF
1208
1209	!
1210	!-- Use these mean profiles at the inflow (provided that Dirichlet
1211	!-- conditions are used)
1212	IF ( inflow_l ) THEN
1213	DO j = nysg, nyng
1214	DO k = nzb, nzt+1
1215	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1216	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1217	w(k,j,nxlg:-1) = 0.0
1218	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1219	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1220	ENDDO
1221	ENDDO
1222	ENDIF
1223
1224	!
1225	!-- Calculate the damping factors to be used at the inflow. For a
1226	!-- turbulent inflow the turbulent fluctuations have to be limited
1227	!-- vertically because otherwise the turbulent inflow layer will grow
1228	!-- in time.
1229	IF ( inflow_damping_height == 9999999.9 ) THEN
1230	!
1231	!-- Default: use the inversion height calculated by the prerun; if
1232	!-- this is zero, inflow_damping_height must be explicitly
1233	!-- specified.
1234	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0 ) THEN
1235	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1236	ELSE
1237	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1238	'explicitly specified because&the inversion height ', &
1239	'calculated by the prerun is zero.'
1240	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1241	ENDIF
1242
1243	ENDIF
1244
1245	IF ( inflow_damping_width == 9999999.9 ) THEN
1246	!
1247	!-- Default for the transition range: one tenth of the undamped
1248	!-- layer
1249	inflow_damping_width = 0.1 * inflow_damping_height
1250
1251	ENDIF
1252
1253	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1254
1255	DO k = nzb, nzt+1
1256
1257	IF ( zu(k) <= inflow_damping_height ) THEN
1258	inflow_damping_factor(k) = 1.0
1259	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1260	inflow_damping_factor(k) = 1.0 - &
1261	( zu(k) - inflow_damping_height ) / &
1262	inflow_damping_width
1263	ELSE
1264	inflow_damping_factor(k) = 0.0
1265	ENDIF
1266
1267	ENDDO
1268
1269	ENDIF
1270
1271	!
1272	!-- Inside buildings set velocities and TKE back to zero
1273	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1274	topography /= 'flat' ) THEN
1275	!
1276	!-- Inside buildings set velocities and TKE back to zero.
1277	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1278	!-- maybe revise later.
1279	DO i = nxlg, nxrg
1280	DO j = nysg, nyng
1281	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1282	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1283	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1284	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1285	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1286	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1287	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1288	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1289	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1290	ENDDO
1291	ENDDO
1292
1293	ENDIF
1294
1295	!
1296	!-- Calculate initial temperature field and other constants used in case
1297	!-- of a sloping surface
1298	IF ( sloping_surface ) CALL init_slope
1299
1300	!
1301	!-- Initialize new time levels (only done in order to set boundary values
1302	!-- including ghost points)
1303	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1304	IF ( humidity .OR. passive_scalar ) THEN
1305	q_p = q
1306	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1307	precipitation ) THEN
1308	qr_p = qr
1309	nr_p = nr
1310	ENDIF
1311	ENDIF
1312	IF ( ocean ) sa_p = sa
1313
1314	!
1315	!-- Allthough tendency arrays are set in prognostic_equations, they have
1316	!-- have to be predefined here because they are used (but multiplied with 0)
1317	!-- there before they are set.
1318	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1319	IF ( humidity .OR. passive_scalar ) THEN
1320	tq_m = 0.0
1321	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1322	precipitation ) THEN
1323	tqr_m = 0.0
1324	tnr_m = 0.0
1325	ENDIF
1326	ENDIF
1327	IF ( ocean ) tsa_m = 0.0
1328
1329	ELSE
1330	!
1331	!-- Actually this part of the programm should not be reached
1332	message_string = 'unknown initializing problem'
1333	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1334	ENDIF
1335
1336
1337	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1338	!
1339	!-- Initialize old timelevels needed for radiation boundary conditions
1340	IF ( outflow_l ) THEN
1341	u_m_l(:,:,:) = u(:,:,1:2)
1342	v_m_l(:,:,:) = v(:,:,0:1)
1343	w_m_l(:,:,:) = w(:,:,0:1)
1344	ENDIF
1345	IF ( outflow_r ) THEN
1346	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1347	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1348	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1349	ENDIF
1350	IF ( outflow_s ) THEN
1351	u_m_s(:,:,:) = u(:,0:1,:)
1352	v_m_s(:,:,:) = v(:,1:2,:)
1353	w_m_s(:,:,:) = w(:,0:1,:)
1354	ENDIF
1355	IF ( outflow_n ) THEN
1356	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1357	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1358	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1359	ENDIF
1360
1361	ENDIF
1362
1363	!
1364	!-- Calculate the initial volume flow at the right and north boundary
1365	IF ( conserve_volume_flow ) THEN
1366
1367	IF ( use_prescribed_profile_data ) THEN
1368
1369	volume_flow_initial_l = 0.0
1370	volume_flow_area_l = 0.0
1371
1372	IF ( nxr == nx ) THEN
1373	DO j = nys, nyn
1374	DO k = nzb_2d(j,nx)+1, nzt
1375	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1376	u_init(k) * dzw(k)
1377	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1378	ENDDO
1379	ENDDO
1380	ENDIF
1381
1382	IF ( nyn == ny ) THEN
1383	DO i = nxl, nxr
1384	DO k = nzb_2d(ny,i)+1, nzt
1385	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1386	v_init(k) * dzw(k)
1387	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1388	ENDDO
1389	ENDDO
1390	ENDIF
1391
1392	#if defined( __parallel )
1393	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1394	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1395	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1396	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1397
1398	#else
1399	volume_flow_initial = volume_flow_initial_l
1400	volume_flow_area = volume_flow_area_l
1401	#endif
1402
1403	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1404
1405	volume_flow_initial_l = 0.0
1406	volume_flow_area_l = 0.0
1407
1408	IF ( nxr == nx ) THEN
1409	DO j = nys, nyn
1410	DO k = nzb_2d(j,nx)+1, nzt
1411	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1412	hom_sum(k,1,0) * dzw(k)
1413	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1414	ENDDO
1415	ENDDO
1416	ENDIF
1417
1418	IF ( nyn == ny ) THEN
1419	DO i = nxl, nxr
1420	DO k = nzb_2d(ny,i)+1, nzt
1421	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1422	hom_sum(k,2,0) * dzw(k)
1423	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1424	ENDDO
1425	ENDDO
1426	ENDIF
1427
1428	#if defined( __parallel )
1429	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1430	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1431	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1432	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1433
1434	#else
1435	volume_flow_initial = volume_flow_initial_l
1436	volume_flow_area = volume_flow_area_l
1437	#endif
1438
1439	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1440
1441	volume_flow_initial_l = 0.0
1442	volume_flow_area_l = 0.0
1443
1444	IF ( nxr == nx ) THEN
1445	DO j = nys, nyn
1446	DO k = nzb_2d(j,nx)+1, nzt
1447	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1448	u(k,j,nx) * dzw(k)
1449	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1450	ENDDO
1451	ENDDO
1452	ENDIF
1453
1454	IF ( nyn == ny ) THEN
1455	DO i = nxl, nxr
1456	DO k = nzb_2d(ny,i)+1, nzt
1457	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1458	v(k,ny,i) * dzw(k)
1459	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1460	ENDDO
1461	ENDDO
1462	ENDIF
1463
1464	#if defined( __parallel )
1465	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1466	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1467	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1468	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1469
1470	#else
1471	volume_flow_initial = volume_flow_initial_l
1472	volume_flow_area = volume_flow_area_l
1473	#endif
1474
1475	ENDIF
1476
1477	!
1478	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1479	!-- from u\|v_bulk instead
1480	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1481	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1482	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1483	ENDIF
1484
1485	ENDIF
1486
1487	!
1488	!-- Initialize quantities for special advections schemes
1489	CALL init_advec
1490
1491	!
1492	!-- Impose random perturbation on the horizontal velocity field and then
1493	!-- remove the divergences from the velocity field at the initial stage
1494	IF ( create_disturbances .AND. &
1495	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1496	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1497
1498	CALL disturb_field( nzb_u_inner, tend, u )
1499	CALL disturb_field( nzb_v_inner, tend, v )
1500	n_sor = nsor_ini
1501	!$acc data copy( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner, nzb_v_inner, nzb_w_inner, p, tri, tric, u, v, w, weight_pres, weight_substep, tend )
1502	CALL pres
1503	!$acc end data
1504	n_sor = nsor
1505	ENDIF
1506
1507	!
1508	!-- Initialization of the leaf area density
1509	IF ( plant_canopy ) THEN
1510
1511	SELECT CASE ( TRIM( canopy_mode ) )
1512
1513	CASE( 'block' )
1514
1515	DO i = nxlg, nxrg
1516	DO j = nysg, nyng
1517	lad_s(:,j,i) = lad(:)
1518	cdc(:,j,i) = drag_coefficient
1519	IF ( passive_scalar ) THEN
1520	sls(:,j,i) = leaf_surface_concentration
1521	sec(:,j,i) = scalar_exchange_coefficient
1522	ENDIF
1523	ENDDO
1524	ENDDO
1525
1526	CASE DEFAULT
1527
1528	!
1529	!-- The DEFAULT case is reached either if the parameter
1530	!-- canopy mode contains a wrong character string or if the
1531	!-- user has coded a special case in the user interface.
1532	!-- There, the subroutine user_init_plant_canopy checks
1533	!-- which of these two conditions applies.
1534	CALL user_init_plant_canopy
1535
1536	END SELECT
1537
1538	CALL exchange_horiz( lad_s, nbgp )
1539	CALL exchange_horiz( cdc, nbgp )
1540
1541	IF ( passive_scalar ) THEN
1542	CALL exchange_horiz( sls, nbgp )
1543	CALL exchange_horiz( sec, nbgp )
1544	ENDIF
1545
1546	!
1547	!-- Sharp boundaries of the plant canopy in horizontal directions
1548	!-- In vertical direction the interpolation is retained, as the leaf
1549	!-- area density is initialised by prescribing a vertical profile
1550	!-- consisting of piecewise linear segments. The upper boundary
1551	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1552
1553	DO i = nxl, nxr
1554	DO j = nys, nyn
1555	DO k = nzb, nzt+1
1556	IF ( lad_s(k,j,i) > 0.0 ) THEN
1557	lad_u(k,j,i) = lad_s(k,j,i)
1558	lad_u(k,j,i+1) = lad_s(k,j,i)
1559	lad_v(k,j,i) = lad_s(k,j,i)
1560	lad_v(k,j+1,i) = lad_s(k,j,i)
1561	ENDIF
1562	ENDDO
1563	DO k = nzb, nzt
1564	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1565	ENDDO
1566	ENDDO
1567	ENDDO
1568
1569	lad_w(pch_index,:,:) = 0.0
1570	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1571
1572	CALL exchange_horiz( lad_u, nbgp )
1573	CALL exchange_horiz( lad_v, nbgp )
1574	CALL exchange_horiz( lad_w, nbgp )
1575
1576	!
1577	!-- Initialisation of the canopy heat source distribution
1578	IF ( cthf /= 0.0 ) THEN
1579	!
1580	!-- Piecewise evaluation of the leaf area index by
1581	!-- integration of the leaf area density
1582	lai(:,:,:) = 0.0
1583	DO i = nxlg, nxrg
1584	DO j = nysg, nyng
1585	DO k = pch_index-1, 0, -1
1586	lai(k,j,i) = lai(k+1,j,i) + &
1587	( 0.5 * ( lad_w(k+1,j,i) + &
1588	lad_s(k+1,j,i) ) * &
1589	( zw(k+1) - zu(k+1) ) ) + &
1590	( 0.5 * ( lad_w(k,j,i) + &
1591	lad_s(k+1,j,i) ) * &
1592	( zu(k+1) - zw(k) ) )
1593	ENDDO
1594	ENDDO
1595	ENDDO
1596
1597	!
1598	!-- Evaluation of the upward kinematic vertical heat flux within the
1599	!-- canopy
1600	DO i = nxlg, nxrg
1601	DO j = nysg, nyng
1602	DO k = 0, pch_index
1603	canopy_heat_flux(k,j,i) = cthf * &
1604	exp( -0.6 * lai(k,j,i) )
1605	ENDDO
1606	ENDDO
1607	ENDDO
1608
1609	!
1610	!-- The near surface heat flux is derived from the heat flux
1611	!-- distribution within the canopy
1612	shf(:,:) = canopy_heat_flux(0,:,:)
1613
1614	ENDIF
1615
1616	ENDIF
1617
1618	!
1619	!-- If required, initialize dvrp-software
1620	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
1621
1622	IF ( ocean ) THEN
1623	!
1624	!-- Initialize quantities needed for the ocean model
1625	CALL init_ocean
1626
1627	ELSE
1628	!
1629	!-- Initialize quantities for handling cloud physics
1630	!-- This routine must be called before lpm_init, because
1631	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1632	!-- lpm_init) is not defined.
1633	CALL init_cloud_physics
1634	ENDIF
1635
1636	!
1637	!-- If required, initialize particles
1638	IF ( particle_advection ) CALL lpm_init
1639
1640	!
1641	!-- Initialize the ws-scheme.
1642	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1643
1644	!
1645	!-- Setting weighting factors for calculation of perturbation pressure
1646	!-- and turbulent quantities from the RK substeps
1647	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1648
1649	weight_substep(1) = 1./6.
1650	weight_substep(2) = 3./10.
1651	weight_substep(3) = 8./15.
1652
1653	weight_pres(1) = 1./3.
1654	weight_pres(2) = 5./12.
1655	weight_pres(3) = 1./4.
1656
1657	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1658
1659	weight_substep(1) = 1./2.
1660	weight_substep(2) = 1./2.
1661
1662	weight_pres(1) = 1./2.
1663	weight_pres(2) = 1./2.
1664
1665	ELSE ! for Euler-method
1666
1667	weight_substep(1) = 1.0
1668	weight_pres(1) = 1.0
1669
1670	ENDIF
1671
1672	!
1673	!-- Initialize Rayleigh damping factors
1674	rdf = 0.0
1675	rdf_sc = 0.0
1676	IF ( rayleigh_damping_factor /= 0.0 ) THEN
1677	IF ( .NOT. ocean ) THEN
1678	DO k = nzb+1, nzt
1679	IF ( zu(k) >= rayleigh_damping_height ) THEN
1680	rdf(k) = rayleigh_damping_factor * &
1681	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
1682	/ ( zu(nzt) - rayleigh_damping_height ) )&
1683	)**2
1684	ENDIF
1685	ENDDO
1686	ELSE
1687	DO k = nzt, nzb+1, -1
1688	IF ( zu(k) <= rayleigh_damping_height ) THEN
1689	rdf(k) = rayleigh_damping_factor * &
1690	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
1691	/ ( rayleigh_damping_height - zu(nzb+1)))&
1692	)**2
1693	ENDIF
1694	ENDDO
1695	ENDIF
1696	ENDIF
1697	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1698
1699	!
1700	!-- Initialize the starting level and the vertical smoothing factor used for
1701	!-- the external pressure gradient
1702	dp_smooth_factor = 1.0
1703	IF ( dp_external ) THEN
1704	!
1705	!-- Set the starting level dp_level_ind_b only if it has not been set before
1706	!-- (e.g. in init_grid).
1707	IF ( dp_level_ind_b == 0 ) THEN
1708	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1709	dp_level_ind_b = ind_array(1) - 1 + nzb
1710	! MINLOC uses lower array bound 1
1711	ENDIF
1712	IF ( dp_smooth ) THEN
1713	dp_smooth_factor(:dp_level_ind_b) = 0.0
1714	DO k = dp_level_ind_b+1, nzt
1715	dp_smooth_factor(k) = 0.5 * ( 1.0 + SIN( pi * &
1716	( REAL( k - dp_level_ind_b ) / &
1717	REAL( nzt - dp_level_ind_b ) - 0.5 ) ) )
1718	ENDDO
1719	ENDIF
1720	ENDIF
1721
1722	!
1723	!-- Initialize damping zone for the potential temperature in case of
1724	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1725	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1726	ptdf_x = 0.0
1727	ptdf_y = 0.0
1728	IF ( bc_lr_dirrad ) THEN
1729	DO i = nxl, nxr
1730	IF ( ( i * dx ) < pt_damping_width ) THEN
1731	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5 * &
1732	REAL( pt_damping_width - i * dx ) / ( &
1733	REAL( pt_damping_width ) ) ) )**2
1734	ENDIF
1735	ENDDO
1736	ELSEIF ( bc_lr_raddir ) THEN
1737	DO i = nxl, nxr
1738	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1739	ptdf_x(i) = pt_damping_factor * &
1740	SIN( pi * 0.5 * ( ( i - nx ) * dx + pt_damping_width ) / &
1741	REAL( pt_damping_width ) )**2
1742	ENDIF
1743	ENDDO
1744	ELSEIF ( bc_ns_dirrad ) THEN
1745	DO j = nys, nyn
1746	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1747	ptdf_y(j) = pt_damping_factor * &
1748	SIN( pi * 0.5 * ( ( j - ny ) * dy + pt_damping_width ) / &
1749	REAL( pt_damping_width ) )**2
1750	ENDIF
1751	ENDDO
1752	ELSEIF ( bc_ns_raddir ) THEN
1753	DO j = nys, nyn
1754	IF ( ( j * dy ) < pt_damping_width ) THEN
1755	ptdf_y(j) = pt_damping_factor * &
1756	SIN( pi * 0.5 * ( pt_damping_width - j * dy ) / &
1757	REAL( pt_damping_width ) )**2
1758	ENDIF
1759	ENDDO
1760	ENDIF
1761
1762	!
1763	!-- Initialize local summation arrays for routine flow_statistics.
1764	!-- This is necessary because they may not yet have been initialized when they
1765	!-- are called from flow_statistics (or - depending on the chosen model run -
1766	!-- are never initialized)
1767	sums_divnew_l = 0.0
1768	sums_divold_l = 0.0
1769	sums_l_l = 0.0
1770	sums_up_fraction_l = 0.0
1771	sums_wsts_bc_l = 0.0
1772
1773	!
1774	!-- Pre-set masks for regional statistics. Default is the total model domain.
1775	!-- Ghost points are excluded because counting values at the ghost boundaries
1776	!-- would bias the statistics
1777	rmask = 1.0
1778	rmask(:,nxlg:nxl-1,:) = 0.0; rmask(:,nxr+1:nxrg,:) = 0.0
1779	rmask(nysg:nys-1,:,:) = 0.0; rmask(nyn+1:nyng,:,:) = 0.0
1780
1781	!
1782	!-- User-defined initializing actions. Check afterwards, if maximum number
1783	!-- of allowed timeseries is exceeded
1784	CALL user_init
1785
1786	IF ( dots_num > dots_max ) THEN
1787	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1788	' its maximum of dots_max = ', dots_max, &
1789	' &Please increase dots_max in modules.f90.'
1790	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1791	ENDIF
1792
1793	!
1794	!-- Input binary data file is not needed anymore. This line must be placed
1795	!-- after call of user_init!
1796	CALL close_file( 13 )
1797
1798	!
1799	!-- Compute total sum of active mask grid points
1800	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1801	!-- total domain
1802	!-- ngp_3d: number of grid points of the total domain
1803	ngp_2dh_outer_l = 0
1804	ngp_2dh_outer = 0
1805	ngp_2dh_s_inner_l = 0
1806	ngp_2dh_s_inner = 0
1807	ngp_2dh_l = 0
1808	ngp_2dh = 0
1809	ngp_3d_inner_l = 0.0
1810	ngp_3d_inner = 0
1811	ngp_3d = 0
1812	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1813
1814	DO sr = 0, statistic_regions
1815	DO i = nxl, nxr
1816	DO j = nys, nyn
1817	IF ( rmask(j,i,sr) == 1.0 ) THEN
1818	!
1819	!-- All xy-grid points
1820	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1821	!
1822	!-- xy-grid points above topography
1823	DO k = nzb_s_outer(j,i), nz + 1
1824	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1825	ENDDO
1826	DO k = nzb_s_inner(j,i), nz + 1
1827	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1828	ENDDO
1829	!
1830	!-- All grid points of the total domain above topography
1831	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1832	( nz - nzb_s_inner(j,i) + 2 )
1833	ENDIF
1834	ENDDO
1835	ENDDO
1836	ENDDO
1837
1838	sr = statistic_regions + 1
1839	#if defined( __parallel )
1840	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1841	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1842	comm2d, ierr )
1843	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1844	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1845	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1846	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1847	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1848	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1849	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1850	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1851	MPI_SUM, comm2d, ierr )
1852	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1853	#else
1854	ngp_2dh = ngp_2dh_l
1855	ngp_2dh_outer = ngp_2dh_outer_l
1856	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1857	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1858	#endif
1859
1860	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1861	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1862
1863	!
1864	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1865	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1866	!-- the respective subdomain lie below the surface topography
1867	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1868	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1869	ngp_3d_inner(:) )
1870	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1871
1872	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1873
1874
1875	END SUBROUTINE init_3d_model

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