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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1165

Last change on this file since 1165 was 1160, checked in by fricke, 12 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 1160 2013-05-21 12:06:24Z raasch $
30	!
31	! 1159 2013-05-21 11:58:22Z fricke
32	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
33	!
34	! 1153 2013-05-10 14:33:08Z raasch
35	! diss array is allocated with dummy elements even if it is not needed
36	! (required by PGI 12.3 / CUDA 5.0)
37	!
38	! 1115 2013-03-26 18:16:16Z hoffmann
39	! unused variables removed
40	!
41	! 1113 2013-03-10 02:48:14Z raasch
42	! openACC directive modified
43	!
44	! 1111 2013-03-08 23:54:10Z raasch
45	! openACC directives added for pres
46	! array diss allocated only if required
47	!
48	! 1092 2013-02-02 11:24:22Z raasch
49	! unused variables removed
50	!
51	! 1065 2012-11-22 17:42:36Z hoffmann
52	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
53	!
54	! 1053 2012-11-13 17:11:03Z hoffmann
55	! allocation and initialisation of necessary data arrays for the two-moment
56	! cloud physics scheme the two new prognostic equations (nr, qr):
57	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
58	! +tend_*, prr
59	!
60	! 1036 2012-10-22 13:43:42Z raasch
61	! code put under GPL (PALM 3.9)
62	!
63	! 1032 2012-10-21 13:03:21Z letzel
64	! save memory by not allocating pt_2 in case of neutral = .T.
65	!
66	! 1025 2012-10-07 16:04:41Z letzel
67	! bugfix: swap indices of mask for ghost boundaries
68	!
69	! 1015 2012-09-27 09:23:24Z raasch
70	! mask is set to zero for ghost boundaries
71	!
72	! 1010 2012-09-20 07:59:54Z raasch
73	! cpp switch __nopointer added for pointer free version
74	!
75	! 1003 2012-09-14 14:35:53Z raasch
76	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
77	!
78	! 1001 2012-09-13 14:08:46Z raasch
79	! all actions concerning leapfrog scheme removed
80	!
81	! 996 2012-09-07 10:41:47Z raasch
82	! little reformatting
83	!
84	! 978 2012-08-09 08:28:32Z fricke
85	! outflow damping layer removed
86	! roughness length for scalar quantites z0h added
87	! damping zone for the potential temperatur in case of non-cyclic lateral
88	! boundaries added
89	! initialization of ptdf_x, ptdf_y
90	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
91	!
92	! 849 2012-03-15 10:35:09Z raasch
93	! init_particles renamed lpm_init
94	!
95	! 825 2012-02-19 03:03:44Z raasch
96	! wang_collision_kernel renamed wang_kernel
97	!
98	! 790 2011-11-29 03:11:20Z raasch
99	! diss is also allocated in case that the Wang kernel is used
100	!
101	! 787 2011-11-28 12:49:05Z heinze $
102	! bugfix: call init_advec in every case - not only for inital runs
103	!
104	! 785 2011-11-28 09:47:19Z raasch
105	! initialization of rdf_sc
106	!
107	! 767 2011-10-14 06:39:12Z raasch
108	! adjustments concerning implementation of prescribed u,v-profiles
109	! bugfix: dirichlet_0 conditions for ug/vg moved to check_parameters
110	!
111	! 759 2011-09-15 13:58:31Z raasch
112	! Splitting of parallel I/O in blocks of PEs
113	! Bugfix: No zero assignments to volume_flow_initial and volume_flow_area in
114	! case of normal restart runs.
115	!
116	! 713 2011-03-30 14:21:21Z suehring
117	! weight_substep and weight_pres are given as fractions.
118	!
119	! 709 2011-03-30 09:31:40Z raasch
120	! formatting adjustments
121	!
122	! 707 2011-03-29 11:39:40Z raasch
123	! p_sub renamed p_loc and allocated depending on the chosen pressure solver,
124	! initial assignments of zero to array p for iterative solvers only,
125	! bc_lr/ns replaced by bc_lr/ns_dirrad/raddir
126	!
127	! 680 2011-02-04 23:16:06Z gryschka
128	! bugfix: volume_flow_control
129	!
130	! 673 2011-01-18 16:19:48Z suehring
131	! weight_substep (moved from advec_ws) and weight_pres added.
132	! Allocate p_sub when using Multigrid or SOR solver.
133	! Call of ws_init moved behind the if requests.
134	!
135	! 667 2010-12-23 12:06:00Z suehring/gryschka
136	! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng in loops and
137	! allocation of arrays. Calls of exchange_horiz are modified.
138	! Call ws_init to initialize arrays needed for calculating statisticas and for
139	! optimization when ws-scheme is used.
140	! Initial volume flow is now calculated by using the variable hom_sum.
141	! Therefore the correction of initial volume flow for non-flat topography
142	! removed (removed u_nzb_p1_for_vfc and v_nzb_p1_for_vfc)
143	! Changed surface boundary conditions for u and v in case of ibc_uv_b == 0 from
144	! mirror to Dirichlet boundary conditions (u=v=0), so that k=nzb is
145	! representative for the height z0.
146	! Bugfix: type conversion of '1' to 64bit for the MAX function (ngp_3d_inner)
147	!
148	! 622 2010-12-10 08:08:13Z raasch
149	! optional barriers included in order to speed up collective operations
150	!
151	! 560 2010-09-09 10:06:09Z weinreis
152	! bugfix: correction of calculating ngp_3d for 64 bit
153	!
154	! 485 2010-02-05 10:57:51Z raasch
155	! calculation of ngp_3d + ngp_3d_inner changed because they have now 64 bit
156	!
157	! 407 2009-12-01 15:01:15Z maronga
158	! var_ts is replaced by dots_max
159	! Enabled passive scalar/humidity wall fluxes for non-flat topography
160	!
161	! 388 2009-09-23 09:40:33Z raasch
162	! Initialization of prho added.
163	! bugfix: correction of initial volume flow for non-flat topography
164	! bugfix: zero initialization of arrays within buildings for 'cyclic_fill'
165	! bugfix: avoid that ngp_2dh_s_inner becomes zero
166	! initializing_actions='read_data_for_recycling' renamed to 'cyclic_fill', now
167	! independent of turbulent_inflow
168	! Output of messages replaced by message handling routine.
169	! Set the starting level and the vertical smoothing factor used for
170	! the external pressure gradient
171	! +conserve_volume_flow_mode: 'default', 'initial_profiles', 'inflow_profile'
172	! and 'bulk_velocity'
173	! If the inversion height calculated by the prerun is zero,
174	! inflow_damping_height must be explicitly specified.
175	!
176	! 181 2008-07-30 07:07:47Z raasch
177	! bugfix: zero assignments to tendency arrays in case of restarts,
178	! further extensions and modifications in the initialisation of the plant
179	! canopy model,
180	! allocation of hom_sum moved to parin, initialization of spectrum_x\|y directly
181	! after allocating theses arrays,
182	! read data for recycling added as new initialization option,
183	! dummy allocation for diss
184	!
185	! 138 2007-11-28 10:03:58Z letzel
186	! New counter ngp_2dh_s_inner.
187	! Allow new case bc_uv_t = 'dirichlet_0' for channel flow.
188	! Corrected calculation of initial volume flow for 'set_1d-model_profiles' and
189	! 'set_constant_profiles' in case of buildings in the reference cross-sections.
190	!
191	! 108 2007-08-24 15:10:38Z letzel
192	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
193	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
194	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
195	! Rayleigh damping for ocean, optionally calculate km and kh from initial
196	! TKE e_init
197	!
198	! 97 2007-06-21 08:23:15Z raasch
199	! Initialization of salinity, call of init_ocean
200	!
201	! 87 2007-05-22 15:46:47Z raasch
202	! var_hom and var_sum renamed pr_palm
203	!
204	! 75 2007-03-22 09:54:05Z raasch
205	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
206	! bugfix for cases with the outflow damping layer extending over more than one
207	! subdomain, moisture renamed humidity,
208	! new initializing action "by_user" calls user_init_3d_model,
209	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
210	! initial velocities at nzb+1 are regarded for volume
211	! flow control in case they have been set zero before (to avoid small timesteps)
212	! -uvmean_outflow, uxrp, vynp eliminated
213	!
214	! 19 2007-02-23 04:53:48Z raasch
215	! +handling of top fluxes
216	!
217	! RCS Log replace by Id keyword, revision history cleaned up
218	!
219	! Revision 1.49 2006/08/22 15:59:07 raasch
220	! No optimization of this file on the ibmy (Yonsei Univ.)
221	!
222	! Revision 1.1 1998/03/09 16:22:22 raasch
223	! Initial revision
224	!
225	!
226	! Description:
227	! ------------
228	! Allocation of arrays and initialization of the 3D model via
229	! a) pre-run the 1D model
230	! or
231	! b) pre-set constant linear profiles
232	! or
233	! c) read values of a previous run
234	!------------------------------------------------------------------------------!
235
236	USE advec_ws
237	USE arrays_3d
238	USE averaging
239	USE cloud_parameters
240	USE constants
241	USE control_parameters
242	USE cpulog
243	USE grid_variables
244	USE indices
245	USE interfaces
246	USE model_1d
247	USE netcdf_control
248	USE particle_attributes
249	USE pegrid
250	USE profil_parameter
251	USE random_function_mod
252	USE statistics
253	USE transpose_indices
254
255	IMPLICIT NONE
256
257	INTEGER :: i, ind_array(1), j, k, sr
258
259	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l
260
261	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l, &
262	ngp_2dh_s_inner_l
263
264	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
265
266	REAL, DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l, ngp_3d_inner_tmp
267
268
269	!
270	!-- Allocate arrays
271	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
272	ngp_3d(0:statistic_regions), &
273	ngp_3d_inner(0:statistic_regions), &
274	ngp_3d_inner_l(0:statistic_regions), &
275	ngp_3d_inner_tmp(0:statistic_regions), &
276	sums_divnew_l(0:statistic_regions), &
277	sums_divold_l(0:statistic_regions) )
278	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
279	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
280	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
281	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
282	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
283	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
284	sums(nzb:nzt+1,pr_palm+max_pr_user), &
285	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
286	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
287	sums_up_fraction_l(10,3,0:statistic_regions), &
288	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
289	ts_value(dots_max,0:statistic_regions) )
290	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
291
292	ALLOCATE( rif(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
293	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
294	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
295	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
296	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
297	z0h(nysg:nyng,nxlg:nxrg) )
298
299	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
300	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
301	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
302	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
303	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
304
305	#if defined( __nopointer )
306	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
307	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
308	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
309	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
310	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
311	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
312	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
313	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
314	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
315	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
316	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
317	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
318	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
319	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
320	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
321	#else
322	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
323	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
324	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
325	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
326	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
327	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
328	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
329	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
330	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
331	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
332	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
333	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
334	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
335	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
336	IF ( .NOT. neutral ) THEN
337	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
338	ENDIF
339	#endif
340
341	!
342	!-- Following array is required for perturbation pressure within the iterative
343	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
344	!-- the weighted average of the substeps and cannot be used in the Poisson
345	!-- solver.
346	IF ( psolver == 'sor' ) THEN
347	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
348	ELSEIF ( psolver == 'multigrid' ) THEN
349	!
350	!-- For performance reasons, multigrid is using one ghost layer only
351	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
352	ENDIF
353
354	!
355	!-- Array for storing constant coeffficients of the tridiagonal solver
356	IF ( psolver == 'poisfft' ) THEN
357	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
358	ENDIF
359
360	IF ( humidity .OR. passive_scalar ) THEN
361	!
362	!-- 2D-humidity/scalar arrays
363	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
364	qsws(nysg:nyng,nxlg:nxrg), &
365	qswst(nysg:nyng,nxlg:nxrg) )
366
367	!
368	!-- 3D-humidity/scalar arrays
369	#if defined( __nopointer )
370	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
371	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
372	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
373	#else
374	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
375	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
376	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
377	#endif
378
379	!
380	!-- 3D-arrays needed for humidity only
381	IF ( humidity ) THEN
382	#if defined( __nopointer )
383	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
384	#else
385	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
386	#endif
387
388	IF ( cloud_physics ) THEN
389
390	!
391	!-- Liquid water content
392	#if defined( __nopointer )
393	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
394	#else
395	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
396	#endif
397	!
398	!-- Precipitation amount and rate (only needed if output is switched)
399	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
400	precipitation_rate(nysg:nyng,nxlg:nxrg) )
401
402	IF ( icloud_scheme == 0 ) THEN
403	!
404	!-- 1D-arrays
405	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
406	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
407	!
408	!-- 3D-cloud water content
409	#if defined( __nopointer )
410	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
411	#else
412	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
413	#endif
414	!
415	!-- 3D-tendency arrays
416	ALLOCATE( tend_pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
417	tend_q(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
418
419	IF ( precipitation ) THEN
420	!
421	!-- 1D-arrays
422	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
423	!
424	!
425	!-- 3D-tendency arrays
426	ALLOCATE( tend_nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
427	tend_qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
428	!
429	!-- 2D-rain water content and rain drop concentration arrays
430	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
431	qrsws(nysg:nyng,nxlg:nxrg), &
432	qrswst(nysg:nyng,nxlg:nxrg), &
433	nrs(nysg:nyng,nxlg:nxrg), &
434	nrsws(nysg:nyng,nxlg:nxrg), &
435	nrswst(nysg:nyng,nxlg:nxrg) )
436	!
437	!-- 3D-rain water content, rain drop concentration arrays
438	#if defined( __nopointer )
439	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
440	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
441	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
442	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
443	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
444	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
445	#else
446	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
447	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
448	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
449	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
450	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
451	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
452	#endif
453	!
454	!-- 3d-precipitation rate
455	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
456	ENDIF
457
458	ENDIF
459	ENDIF
460
461	IF ( cloud_droplets ) THEN
462	!
463	!-- Liquid water content, change in liquid water content
464	#if defined( __nopointer )
465	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
466	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
467	#else
468	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
469	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
470	#endif
471	!
472	!-- Real volume of particles (with weighting), volume of particles
473	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
474	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
475	ENDIF
476
477	ENDIF
478
479	ENDIF
480
481	IF ( ocean ) THEN
482	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
483	saswst(nysg:nyng,nxlg:nxrg) )
484	#if defined( __nopointer )
485	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
486	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
487	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
488	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
489	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
490	#else
491	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
492	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
493	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
494	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
495	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
496	prho => prho_1
497	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
498	! density to be apointer
499	#endif
500	IF ( humidity_remote ) THEN
501	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
502	qswst_remote = 0.0
503	ENDIF
504	ENDIF
505
506	!
507	!-- 3D-array for storing the dissipation, needed for calculating the sgs
508	!-- particle velocities
509	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence ) THEN
510	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
511	ELSE
512	ALLOCATE( diss(2,2,2) )
513	ENDIF
514
515	IF ( dt_dosp /= 9999999.9 ) THEN
516	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
517	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
518	spectrum_x = 0.0
519	spectrum_y = 0.0
520	ENDIF
521
522	!
523	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
524	IF ( plant_canopy ) THEN
525	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
526	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
527	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
528	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
529	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
530
531	IF ( passive_scalar ) THEN
532	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
533	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
534	ENDIF
535
536	IF ( cthf /= 0.0 ) THEN
537	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
538	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
539	ENDIF
540
541	ENDIF
542
543	!
544	!-- 4D-array for storing the Rif-values at vertical walls
545	IF ( topography /= 'flat' ) THEN
546	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
547	rif_wall = 0.0
548	ENDIF
549
550	!
551	!-- Arrays to store velocity data from t-dt and the phase speeds which
552	!-- are needed for radiation boundary conditions
553	IF ( outflow_l ) THEN
554	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
555	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
556	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
557	ENDIF
558	IF ( outflow_r ) THEN
559	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
560	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
561	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
562	ENDIF
563	IF ( outflow_l .OR. outflow_r ) THEN
564	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
565	c_w(nzb:nzt+1,nysg:nyng) )
566	ENDIF
567	IF ( outflow_s ) THEN
568	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
569	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
570	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
571	ENDIF
572	IF ( outflow_n ) THEN
573	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
574	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
575	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
576	ENDIF
577	IF ( outflow_s .OR. outflow_n ) THEN
578	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
579	c_w(nzb:nzt+1,nxlg:nxrg) )
580	ENDIF
581	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
582	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
583	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
584	ENDIF
585
586
587	#if ! defined( __nopointer )
588	!
589	!-- Initial assignment of the pointers
590	e => e_1; e_p => e_2; te_m => e_3
591	IF ( .NOT. neutral ) THEN
592	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
593	ELSE
594	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
595	ENDIF
596	u => u_1; u_p => u_2; tu_m => u_3
597	v => v_1; v_p => v_2; tv_m => v_3
598	w => w_1; w_p => w_2; tw_m => w_3
599
600	IF ( humidity .OR. passive_scalar ) THEN
601	q => q_1; q_p => q_2; tq_m => q_3
602	IF ( humidity ) THEN
603	vpt => vpt_1
604	IF ( cloud_physics ) THEN
605	ql => ql_1
606	IF ( icloud_scheme == 0 ) THEN
607	qc => qc_1
608	IF ( precipitation ) THEN
609	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
610	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
611	ENDIF
612	ENDIF
613	ENDIF
614	ENDIF
615	IF ( cloud_droplets ) THEN
616	ql => ql_1
617	ql_c => ql_2
618	ENDIF
619	ENDIF
620
621	IF ( ocean ) THEN
622	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
623	ENDIF
624	#endif
625
626	!
627	!-- Allocate arrays containing the RK coefficient for calculation of
628	!-- perturbation pressure and turbulent fluxes. At this point values are
629	!-- set for pressure calculation during initialization (where no timestep
630	!-- is done). Further below the values needed within the timestep scheme
631	!-- will be set.
632	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
633	weight_pres(1:intermediate_timestep_count_max) )
634	weight_substep = 1.0
635	weight_pres = 1.0
636	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
637
638	!
639	!-- Initialize model variables
640	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
641	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
642	!
643	!-- First model run of a possible job queue.
644	!-- Initial profiles of the variables must be computes.
645	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
646	!
647	!-- Use solutions of the 1D model as initial profiles,
648	!-- start 1D model
649	CALL init_1d_model
650	!
651	!-- Transfer initial profiles to the arrays of the 3D model
652	DO i = nxlg, nxrg
653	DO j = nysg, nyng
654	e(:,j,i) = e1d
655	kh(:,j,i) = kh1d
656	km(:,j,i) = km1d
657	pt(:,j,i) = pt_init
658	u(:,j,i) = u1d
659	v(:,j,i) = v1d
660	ENDDO
661	ENDDO
662
663	IF ( humidity .OR. passive_scalar ) THEN
664	DO i = nxlg, nxrg
665	DO j = nysg, nyng
666	q(:,j,i) = q_init
667	ENDDO
668	ENDDO
669	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
670	precipitation ) THEN
671	DO i = nxlg, nxrg
672	DO j = nysg, nyng
673	qr(:,j,i) = 0.0
674	nr(:,j,i) = 0.0
675	ENDDO
676	ENDDO
677	!
678	!-- Initialze nc_1d with default value
679	nc_1d(:) = nc_const
680
681	ENDIF
682	ENDIF
683
684	IF ( .NOT. constant_diffusion ) THEN
685	DO i = nxlg, nxrg
686	DO j = nysg, nyng
687	e(:,j,i) = e1d
688	ENDDO
689	ENDDO
690	!
691	!-- Store initial profiles for output purposes etc.
692	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
693
694	IF ( prandtl_layer ) THEN
695	rif = rif1d(nzb+1)
696	ts = 0.0 ! could actually be computed more accurately in the
697	! 1D model. Update when opportunity arises.
698	us = us1d
699	usws = usws1d
700	vsws = vsws1d
701	ELSE
702	ts = 0.0 ! must be set, because used in
703	rif = 0.0 ! flowste
704	us = 0.0
705	usws = 0.0
706	vsws = 0.0
707	ENDIF
708
709	ELSE
710	e = 0.0 ! must be set, because used in
711	rif = 0.0 ! flowste
712	ts = 0.0
713	us = 0.0
714	usws = 0.0
715	vsws = 0.0
716	ENDIF
717	uswst = top_momentumflux_u
718	vswst = top_momentumflux_v
719
720	!
721	!-- In every case qs = 0.0 (see also pt)
722	!-- This could actually be computed more accurately in the 1D model.
723	!-- Update when opportunity arises!
724	IF ( humidity .OR. passive_scalar ) THEN
725	qs = 0.0
726	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
727	precipitation ) THEN
728	qrs = 0.0
729	nrs = 0.0
730	ENDIF
731	ENDIF
732
733	!
734	!-- inside buildings set velocities back to zero
735	IF ( topography /= 'flat' ) THEN
736	DO i = nxl-1, nxr+1
737	DO j = nys-1, nyn+1
738	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
739	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
740	ENDDO
741	ENDDO
742
743	!
744	!-- WARNING: The extra boundary conditions set after running the
745	!-- ------- 1D model impose an error on the divergence one layer
746	!-- below the topography; need to correct later
747	!-- ATTENTION: Provisional correction for Piacsek & Williams
748	!-- --------- advection scheme: keep u and v zero one layer below
749	!-- the topography.
750	IF ( ibc_uv_b == 1 ) THEN
751	!
752	!-- Neumann condition
753	DO i = nxl-1, nxr+1
754	DO j = nys-1, nyn+1
755	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
756	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
757	ENDDO
758	ENDDO
759
760	ENDIF
761
762	ENDIF
763
764	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
765	THEN
766	!
767	!-- Use constructed initial profiles (velocity constant with height,
768	!-- temperature profile with constant gradient)
769	DO i = nxlg, nxrg
770	DO j = nysg, nyng
771	pt(:,j,i) = pt_init
772	u(:,j,i) = u_init
773	v(:,j,i) = v_init
774	ENDDO
775	ENDDO
776
777	!
778	!-- Set initial horizontal velocities at the lowest computational grid
779	!-- levels to zero in order to avoid too small time steps caused by the
780	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
781	!-- in the limiting formula!). The original values are stored to be later
782	!-- used for volume flow control.
783	DO i = nxlg, nxrg
784	DO j = nysg, nyng
785	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
786	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
787	ENDDO
788	ENDDO
789
790	IF ( humidity .OR. passive_scalar ) THEN
791	DO i = nxlg, nxrg
792	DO j = nysg, nyng
793	q(:,j,i) = q_init
794	ENDDO
795	ENDDO
796	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
797	!
798	!-- Initialze nc_1d with default value
799	nc_1d(:) = nc_const
800
801	IF ( precipitation ) THEN
802	DO i = nxlg, nxrg
803	DO j = nysg, nyng
804	qr(:,j,i) = 0.0
805	nr(:,j,i) = 0.0
806	ENDDO
807	ENDDO
808	ENDIF
809
810	ENDIF
811	ENDIF
812
813	IF ( ocean ) THEN
814	DO i = nxlg, nxrg
815	DO j = nysg, nyng
816	sa(:,j,i) = sa_init
817	ENDDO
818	ENDDO
819	ENDIF
820
821	IF ( constant_diffusion ) THEN
822	km = km_constant
823	kh = km / prandtl_number
824	e = 0.0
825	ELSEIF ( e_init > 0.0 ) THEN
826	DO k = nzb+1, nzt
827	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
828	ENDDO
829	km(nzb,:,:) = km(nzb+1,:,:)
830	km(nzt+1,:,:) = km(nzt,:,:)
831	kh = km / prandtl_number
832	e = e_init
833	ELSE
834	IF ( .NOT. ocean ) THEN
835	kh = 0.01 ! there must exist an initial diffusion, because
836	km = 0.01 ! otherwise no TKE would be produced by the
837	! production terms, as long as not yet
838	! e = (u/cm)*2 at k=nzb+1
839	ELSE
840	kh = 0.00001
841	km = 0.00001
842	ENDIF
843	e = 0.0
844	ENDIF
845	rif = 0.0
846	ts = 0.0
847	us = 0.0
848	usws = 0.0
849	uswst = top_momentumflux_u
850	vsws = 0.0
851	vswst = top_momentumflux_v
852	IF ( humidity .OR. passive_scalar ) qs = 0.0
853
854	!
855	!-- Compute initial temperature field and other constants used in case
856	!-- of a sloping surface
857	IF ( sloping_surface ) CALL init_slope
858
859	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
860	THEN
861	!
862	!-- Initialization will completely be done by the user
863	CALL user_init_3d_model
864
865	ENDIF
866	!
867	!-- Bottom boundary
868	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
869	u(nzb,:,:) = 0.0
870	v(nzb,:,:) = 0.0
871	ENDIF
872
873	!
874	!-- Apply channel flow boundary condition
875	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
876	u(nzt+1,:,:) = 0.0
877	v(nzt+1,:,:) = 0.0
878	ENDIF
879
880	!
881	!-- Calculate virtual potential temperature
882	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
883
884	!
885	!-- Store initial profiles for output purposes etc.
886	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
887	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
888	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
889	hom(nzb,1,5,:) = 0.0
890	hom(nzb,1,6,:) = 0.0
891	ENDIF
892	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
893	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
894	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
895
896	IF ( ocean ) THEN
897	!
898	!-- Store initial salinity profile
899	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
900	ENDIF
901
902	IF ( humidity ) THEN
903	!
904	!-- Store initial profile of total water content, virtual potential
905	!-- temperature
906	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
907	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
908	IF ( cloud_physics .OR. cloud_droplets ) THEN
909	!
910	!-- Store initial profile of specific humidity and potential
911	!-- temperature
912	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
913	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
914	ENDIF
915	ENDIF
916
917	IF ( passive_scalar ) THEN
918	!
919	!-- Store initial scalar profile
920	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
921	ENDIF
922
923	!
924	!-- Initialize fluxes at bottom surface
925	IF ( use_surface_fluxes ) THEN
926
927	IF ( constant_heatflux ) THEN
928	!
929	!-- Heat flux is prescribed
930	IF ( random_heatflux ) THEN
931	CALL disturb_heatflux
932	ELSE
933	shf = surface_heatflux
934	!
935	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
936	IF ( TRIM( topography ) /= 'flat' ) THEN
937	DO i = nxlg, nxrg
938	DO j = nysg, nyng
939	IF ( nzb_s_inner(j,i) /= 0 ) THEN
940	shf(j,i) = wall_heatflux(0)
941	ENDIF
942	ENDDO
943	ENDDO
944	ENDIF
945	ENDIF
946	ENDIF
947
948	!
949	!-- Determine the near-surface water flux
950	IF ( humidity .OR. passive_scalar ) THEN
951	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
952	precipitation ) THEN
953	qrsws = 0.0
954	nrsws = 0.0
955	ENDIF
956	IF ( constant_waterflux ) THEN
957	qsws = surface_waterflux
958	!
959	!-- Over topography surface_waterflux is replaced by
960	!-- wall_humidityflux(0)
961	IF ( TRIM( topography ) /= 'flat' ) THEN
962	wall_qflux = wall_humidityflux
963	DO i = nxlg, nxrg
964	DO j = nysg, nyng
965	IF ( nzb_s_inner(j,i) /= 0 ) THEN
966	qsws(j,i) = wall_qflux(0)
967	ENDIF
968	ENDDO
969	ENDDO
970	ENDIF
971	ENDIF
972	ENDIF
973
974	ENDIF
975
976	!
977	!-- Initialize fluxes at top surface
978	!-- Currently, only the heatflux and salinity flux can be prescribed.
979	!-- The latent flux is zero in this case!
980	IF ( use_top_fluxes ) THEN
981
982	IF ( constant_top_heatflux ) THEN
983	!
984	!-- Heat flux is prescribed
985	tswst = top_heatflux
986
987	IF ( humidity .OR. passive_scalar ) THEN
988	qswst = 0.0
989	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
990	precipitation ) THEN
991	nrswst = 0.0
992	qrswst = 0.0
993	ENDIF
994	ENDIF
995
996	IF ( ocean ) THEN
997	saswsb = bottom_salinityflux
998	saswst = top_salinityflux
999	ENDIF
1000	ENDIF
1001
1002	!
1003	!-- Initialization in case of a coupled model run
1004	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1005	tswst = 0.0
1006	ENDIF
1007
1008	ENDIF
1009
1010	!
1011	!-- Initialize Prandtl layer quantities
1012	IF ( prandtl_layer ) THEN
1013
1014	z0 = roughness_length
1015	z0h = z0h_factor * z0
1016
1017	IF ( .NOT. constant_heatflux ) THEN
1018	!
1019	!-- Surface temperature is prescribed. Here the heat flux cannot be
1020	!-- simply estimated, because therefore rif, u* and theta* would have
1021	!-- to be computed by iteration. This is why the heat flux is assumed
1022	!-- to be zero before the first time step. It approaches its correct
1023	!-- value in the course of the first few time steps.
1024	shf = 0.0
1025	ENDIF
1026
1027	IF ( humidity .OR. passive_scalar ) THEN
1028	IF ( .NOT. constant_waterflux ) qsws = 0.0
1029	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1030	precipitation ) THEN
1031	qrsws = 0.0
1032	nrsws = 0.0
1033	ENDIF
1034	ENDIF
1035
1036	ENDIF
1037
1038
1039	!
1040	!-- For the moment, vertical velocity is zero
1041	w = 0.0
1042
1043	!
1044	!-- Initialize array sums (must be defined in first call of pres)
1045	sums = 0.0
1046
1047	!
1048	!-- In case of iterative solvers, p must get an initial value
1049	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0
1050
1051	!
1052	!-- Treating cloud physics, liquid water content and precipitation amount
1053	!-- are zero at beginning of the simulation
1054	IF ( cloud_physics ) THEN
1055	ql = 0.0
1056	IF ( precipitation ) precipitation_amount = 0.0
1057	IF ( icloud_scheme == 0 ) THEN
1058	qc = 0.0
1059	nc_1d = nc_const
1060	ENDIF
1061	ENDIF
1062	!
1063	!-- Impose vortex with vertical axis on the initial velocity profile
1064	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1065	CALL init_rankine
1066	ENDIF
1067
1068	!
1069	!-- Impose temperature anomaly (advection test only)
1070	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1071	CALL init_pt_anomaly
1072	ENDIF
1073
1074	!
1075	!-- If required, change the surface temperature at the start of the 3D run
1076	IF ( pt_surface_initial_change /= 0.0 ) THEN
1077	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1078	ENDIF
1079
1080	!
1081	!-- If required, change the surface humidity/scalar at the start of the 3D
1082	!-- run
1083	IF ( ( humidity .OR. passive_scalar ) .AND. &
1084	q_surface_initial_change /= 0.0 ) THEN
1085	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1086	ENDIF
1087	!
1088	!-- Initialize the random number generator (from numerical recipes)
1089	CALL random_function_ini
1090
1091	!
1092	!-- Initialize old and new time levels.
1093	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1094	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1095
1096	IF ( humidity .OR. passive_scalar ) THEN
1097	tq_m = 0.0
1098	q_p = q
1099	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1100	precipitation ) THEN
1101	tqr_m = 0.0
1102	qr_p = qr
1103	tnr_m = 0.0
1104	nr_p = nr
1105	ENDIF
1106	ENDIF
1107
1108	IF ( ocean ) THEN
1109	tsa_m = 0.0
1110	sa_p = sa
1111	ENDIF
1112
1113
1114	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1115	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1116	THEN
1117	!
1118	!-- When reading data for cyclic fill of 3D prerun data files, read
1119	!-- some of the global variables from the restart file which are required
1120	!-- for initializing the inflow
1121	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1122
1123	DO i = 0, io_blocks-1
1124	IF ( i == io_group ) THEN
1125	CALL read_parts_of_var_list
1126	CALL close_file( 13 )
1127	ENDIF
1128	#if defined( __parallel )
1129	CALL MPI_BARRIER( comm2d, ierr )
1130	#endif
1131	ENDDO
1132
1133	ENDIF
1134
1135	!
1136	!-- Read binary data from restart file
1137	DO i = 0, io_blocks-1
1138	IF ( i == io_group ) THEN
1139	CALL read_3d_binary
1140	ENDIF
1141	#if defined( __parallel )
1142	CALL MPI_BARRIER( comm2d, ierr )
1143	#endif
1144	ENDDO
1145
1146	!
1147	!-- Initialization of the turbulence recycling method
1148	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1149	turbulent_inflow ) THEN
1150	!
1151	!-- First store the profiles to be used at the inflow.
1152	!-- These profiles are the (temporally) and horizontally averaged vertical
1153	!-- profiles from the prerun. Alternatively, prescribed profiles
1154	!-- for u,v-components can be used.
1155	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
1156
1157	IF ( use_prescribed_profile_data ) THEN
1158	mean_inflow_profiles(:,1) = u_init ! u
1159	mean_inflow_profiles(:,2) = v_init ! v
1160	ELSE
1161	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1162	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1163	ENDIF
1164	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1165	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1166
1167	!
1168	!-- If necessary, adjust the horizontal flow field to the prescribed
1169	!-- profiles
1170	IF ( use_prescribed_profile_data ) THEN
1171	DO i = nxlg, nxrg
1172	DO j = nysg, nyng
1173	DO k = nzb, nzt+1
1174	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1175	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1176	ENDDO
1177	ENDDO
1178	ENDDO
1179	ENDIF
1180
1181	!
1182	!-- Use these mean profiles at the inflow (provided that Dirichlet
1183	!-- conditions are used)
1184	IF ( inflow_l ) THEN
1185	DO j = nysg, nyng
1186	DO k = nzb, nzt+1
1187	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1188	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1189	w(k,j,nxlg:-1) = 0.0
1190	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1191	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1192	ENDDO
1193	ENDDO
1194	ENDIF
1195
1196	!
1197	!-- Calculate the damping factors to be used at the inflow. For a
1198	!-- turbulent inflow the turbulent fluctuations have to be limited
1199	!-- vertically because otherwise the turbulent inflow layer will grow
1200	!-- in time.
1201	IF ( inflow_damping_height == 9999999.9 ) THEN
1202	!
1203	!-- Default: use the inversion height calculated by the prerun; if
1204	!-- this is zero, inflow_damping_height must be explicitly
1205	!-- specified.
1206	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0 ) THEN
1207	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1208	ELSE
1209	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1210	'explicitly specified because&the inversion height ', &
1211	'calculated by the prerun is zero.'
1212	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1213	ENDIF
1214
1215	ENDIF
1216
1217	IF ( inflow_damping_width == 9999999.9 ) THEN
1218	!
1219	!-- Default for the transition range: one tenth of the undamped
1220	!-- layer
1221	inflow_damping_width = 0.1 * inflow_damping_height
1222
1223	ENDIF
1224
1225	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1226
1227	DO k = nzb, nzt+1
1228
1229	IF ( zu(k) <= inflow_damping_height ) THEN
1230	inflow_damping_factor(k) = 1.0
1231	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1232	inflow_damping_factor(k) = 1.0 - &
1233	( zu(k) - inflow_damping_height ) / &
1234	inflow_damping_width
1235	ELSE
1236	inflow_damping_factor(k) = 0.0
1237	ENDIF
1238
1239	ENDDO
1240
1241	ENDIF
1242
1243	!
1244	!-- Inside buildings set velocities and TKE back to zero
1245	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1246	topography /= 'flat' ) THEN
1247	!
1248	!-- Inside buildings set velocities and TKE back to zero.
1249	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1250	!-- maybe revise later.
1251	DO i = nxlg, nxrg
1252	DO j = nysg, nyng
1253	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1254	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1255	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1256	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1257	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1258	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1259	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1260	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1261	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1262	ENDDO
1263	ENDDO
1264
1265	ENDIF
1266
1267	!
1268	!-- Calculate initial temperature field and other constants used in case
1269	!-- of a sloping surface
1270	IF ( sloping_surface ) CALL init_slope
1271
1272	!
1273	!-- Initialize new time levels (only done in order to set boundary values
1274	!-- including ghost points)
1275	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1276	IF ( humidity .OR. passive_scalar ) THEN
1277	q_p = q
1278	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1279	precipitation ) THEN
1280	qr_p = qr
1281	nr_p = nr
1282	ENDIF
1283	ENDIF
1284	IF ( ocean ) sa_p = sa
1285
1286	!
1287	!-- Allthough tendency arrays are set in prognostic_equations, they have
1288	!-- have to be predefined here because they are used (but multiplied with 0)
1289	!-- there before they are set.
1290	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1291	IF ( humidity .OR. passive_scalar ) THEN
1292	tq_m = 0.0
1293	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1294	precipitation ) THEN
1295	tqr_m = 0.0
1296	tnr_m = 0.0
1297	ENDIF
1298	ENDIF
1299	IF ( ocean ) tsa_m = 0.0
1300
1301	ELSE
1302	!
1303	!-- Actually this part of the programm should not be reached
1304	message_string = 'unknown initializing problem'
1305	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1306	ENDIF
1307
1308
1309	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1310	!
1311	!-- Initialize old timelevels needed for radiation boundary conditions
1312	IF ( outflow_l ) THEN
1313	u_m_l(:,:,:) = u(:,:,1:2)
1314	v_m_l(:,:,:) = v(:,:,0:1)
1315	w_m_l(:,:,:) = w(:,:,0:1)
1316	ENDIF
1317	IF ( outflow_r ) THEN
1318	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1319	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1320	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1321	ENDIF
1322	IF ( outflow_s ) THEN
1323	u_m_s(:,:,:) = u(:,0:1,:)
1324	v_m_s(:,:,:) = v(:,1:2,:)
1325	w_m_s(:,:,:) = w(:,0:1,:)
1326	ENDIF
1327	IF ( outflow_n ) THEN
1328	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1329	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1330	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1331	ENDIF
1332
1333	ENDIF
1334
1335	!
1336	!-- Calculate the initial volume flow at the right and north boundary
1337	IF ( conserve_volume_flow ) THEN
1338
1339	IF ( use_prescribed_profile_data ) THEN
1340
1341	volume_flow_initial_l = 0.0
1342	volume_flow_area_l = 0.0
1343
1344	IF ( nxr == nx ) THEN
1345	DO j = nys, nyn
1346	DO k = nzb_2d(j,nx)+1, nzt
1347	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1348	u_init(k) * dzw(k)
1349	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1350	ENDDO
1351	ENDDO
1352	ENDIF
1353
1354	IF ( nyn == ny ) THEN
1355	DO i = nxl, nxr
1356	DO k = nzb_2d(ny,i)+1, nzt
1357	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1358	v_init(k) * dzw(k)
1359	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1360	ENDDO
1361	ENDDO
1362	ENDIF
1363
1364	#if defined( __parallel )
1365	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1366	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1367	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1368	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1369
1370	#else
1371	volume_flow_initial = volume_flow_initial_l
1372	volume_flow_area = volume_flow_area_l
1373	#endif
1374
1375	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1376
1377	volume_flow_initial_l = 0.0
1378	volume_flow_area_l = 0.0
1379
1380	IF ( nxr == nx ) THEN
1381	DO j = nys, nyn
1382	DO k = nzb_2d(j,nx)+1, nzt
1383	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1384	hom_sum(k,1,0) * dzw(k)
1385	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1386	ENDDO
1387	ENDDO
1388	ENDIF
1389
1390	IF ( nyn == ny ) THEN
1391	DO i = nxl, nxr
1392	DO k = nzb_2d(ny,i)+1, nzt
1393	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1394	hom_sum(k,2,0) * dzw(k)
1395	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1396	ENDDO
1397	ENDDO
1398	ENDIF
1399
1400	#if defined( __parallel )
1401	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1402	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1403	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1404	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1405
1406	#else
1407	volume_flow_initial = volume_flow_initial_l
1408	volume_flow_area = volume_flow_area_l
1409	#endif
1410
1411	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1412
1413	volume_flow_initial_l = 0.0
1414	volume_flow_area_l = 0.0
1415
1416	IF ( nxr == nx ) THEN
1417	DO j = nys, nyn
1418	DO k = nzb_2d(j,nx)+1, nzt
1419	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1420	u(k,j,nx) * dzw(k)
1421	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1422	ENDDO
1423	ENDDO
1424	ENDIF
1425
1426	IF ( nyn == ny ) THEN
1427	DO i = nxl, nxr
1428	DO k = nzb_2d(ny,i)+1, nzt
1429	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1430	v(k,ny,i) * dzw(k)
1431	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1432	ENDDO
1433	ENDDO
1434	ENDIF
1435
1436	#if defined( __parallel )
1437	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1438	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1439	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1440	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1441
1442	#else
1443	volume_flow_initial = volume_flow_initial_l
1444	volume_flow_area = volume_flow_area_l
1445	#endif
1446
1447	ENDIF
1448
1449	!
1450	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1451	!-- from u\|v_bulk instead
1452	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1453	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1454	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1455	ENDIF
1456
1457	ENDIF
1458
1459	!
1460	!-- Initialize quantities for special advections schemes
1461	CALL init_advec
1462
1463	!
1464	!-- Impose random perturbation on the horizontal velocity field and then
1465	!-- remove the divergences from the velocity field at the initial stage
1466	IF ( create_disturbances .AND. &
1467	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1468	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1469
1470	CALL disturb_field( nzb_u_inner, tend, u )
1471	CALL disturb_field( nzb_v_inner, tend, v )
1472	n_sor = nsor_ini
1473	!$acc data copy( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner, nzb_v_inner, nzb_w_inner, p, tric, u, v, w, weight_pres, weight_substep, tend )
1474	CALL pres
1475	!$acc end data
1476	n_sor = nsor
1477	ENDIF
1478
1479	!
1480	!-- Initialization of the leaf area density
1481	IF ( plant_canopy ) THEN
1482
1483	SELECT CASE ( TRIM( canopy_mode ) )
1484
1485	CASE( 'block' )
1486
1487	DO i = nxlg, nxrg
1488	DO j = nysg, nyng
1489	lad_s(:,j,i) = lad(:)
1490	cdc(:,j,i) = drag_coefficient
1491	IF ( passive_scalar ) THEN
1492	sls(:,j,i) = leaf_surface_concentration
1493	sec(:,j,i) = scalar_exchange_coefficient
1494	ENDIF
1495	ENDDO
1496	ENDDO
1497
1498	CASE DEFAULT
1499
1500	!
1501	!-- The DEFAULT case is reached either if the parameter
1502	!-- canopy mode contains a wrong character string or if the
1503	!-- user has coded a special case in the user interface.
1504	!-- There, the subroutine user_init_plant_canopy checks
1505	!-- which of these two conditions applies.
1506	CALL user_init_plant_canopy
1507
1508	END SELECT
1509
1510	CALL exchange_horiz( lad_s, nbgp )
1511	CALL exchange_horiz( cdc, nbgp )
1512
1513	IF ( passive_scalar ) THEN
1514	CALL exchange_horiz( sls, nbgp )
1515	CALL exchange_horiz( sec, nbgp )
1516	ENDIF
1517
1518	!
1519	!-- Sharp boundaries of the plant canopy in horizontal directions
1520	!-- In vertical direction the interpolation is retained, as the leaf
1521	!-- area density is initialised by prescribing a vertical profile
1522	!-- consisting of piecewise linear segments. The upper boundary
1523	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1524
1525	DO i = nxl, nxr
1526	DO j = nys, nyn
1527	DO k = nzb, nzt+1
1528	IF ( lad_s(k,j,i) > 0.0 ) THEN
1529	lad_u(k,j,i) = lad_s(k,j,i)
1530	lad_u(k,j,i+1) = lad_s(k,j,i)
1531	lad_v(k,j,i) = lad_s(k,j,i)
1532	lad_v(k,j+1,i) = lad_s(k,j,i)
1533	ENDIF
1534	ENDDO
1535	DO k = nzb, nzt
1536	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1537	ENDDO
1538	ENDDO
1539	ENDDO
1540
1541	lad_w(pch_index,:,:) = 0.0
1542	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1543
1544	CALL exchange_horiz( lad_u, nbgp )
1545	CALL exchange_horiz( lad_v, nbgp )
1546	CALL exchange_horiz( lad_w, nbgp )
1547
1548	!
1549	!-- Initialisation of the canopy heat source distribution
1550	IF ( cthf /= 0.0 ) THEN
1551	!
1552	!-- Piecewise evaluation of the leaf area index by
1553	!-- integration of the leaf area density
1554	lai(:,:,:) = 0.0
1555	DO i = nxlg, nxrg
1556	DO j = nysg, nyng
1557	DO k = pch_index-1, 0, -1
1558	lai(k,j,i) = lai(k+1,j,i) + &
1559	( 0.5 * ( lad_w(k+1,j,i) + &
1560	lad_s(k+1,j,i) ) * &
1561	( zw(k+1) - zu(k+1) ) ) + &
1562	( 0.5 * ( lad_w(k,j,i) + &
1563	lad_s(k+1,j,i) ) * &
1564	( zu(k+1) - zw(k) ) )
1565	ENDDO
1566	ENDDO
1567	ENDDO
1568
1569	!
1570	!-- Evaluation of the upward kinematic vertical heat flux within the
1571	!-- canopy
1572	DO i = nxlg, nxrg
1573	DO j = nysg, nyng
1574	DO k = 0, pch_index
1575	canopy_heat_flux(k,j,i) = cthf * &
1576	exp( -0.6 * lai(k,j,i) )
1577	ENDDO
1578	ENDDO
1579	ENDDO
1580
1581	!
1582	!-- The near surface heat flux is derived from the heat flux
1583	!-- distribution within the canopy
1584	shf(:,:) = canopy_heat_flux(0,:,:)
1585
1586	ENDIF
1587
1588	ENDIF
1589
1590	!
1591	!-- If required, initialize dvrp-software
1592	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
1593
1594	IF ( ocean ) THEN
1595	!
1596	!-- Initialize quantities needed for the ocean model
1597	CALL init_ocean
1598
1599	ELSE
1600	!
1601	!-- Initialize quantities for handling cloud physics
1602	!-- This routine must be called before lpm_init, because
1603	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1604	!-- lpm_init) is not defined.
1605	CALL init_cloud_physics
1606	ENDIF
1607
1608	!
1609	!-- If required, initialize particles
1610	IF ( particle_advection ) CALL lpm_init
1611
1612	!
1613	!-- Initialize the ws-scheme.
1614	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1615
1616	!
1617	!-- Setting weighting factors for calculation of perturbation pressure
1618	!-- and turbulent quantities from the RK substeps
1619	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1620
1621	weight_substep(1) = 1./6.
1622	weight_substep(2) = 3./10.
1623	weight_substep(3) = 8./15.
1624
1625	weight_pres(1) = 1./3.
1626	weight_pres(2) = 5./12.
1627	weight_pres(3) = 1./4.
1628
1629	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1630
1631	weight_substep(1) = 1./2.
1632	weight_substep(2) = 1./2.
1633
1634	weight_pres(1) = 1./2.
1635	weight_pres(2) = 1./2.
1636
1637	ELSE ! for Euler-method
1638
1639	weight_substep(1) = 1.0
1640	weight_pres(1) = 1.0
1641
1642	ENDIF
1643
1644	!
1645	!-- Initialize Rayleigh damping factors
1646	rdf = 0.0
1647	rdf_sc = 0.0
1648	IF ( rayleigh_damping_factor /= 0.0 ) THEN
1649	IF ( .NOT. ocean ) THEN
1650	DO k = nzb+1, nzt
1651	IF ( zu(k) >= rayleigh_damping_height ) THEN
1652	rdf(k) = rayleigh_damping_factor * &
1653	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
1654	/ ( zu(nzt) - rayleigh_damping_height ) )&
1655	)**2
1656	ENDIF
1657	ENDDO
1658	ELSE
1659	DO k = nzt, nzb+1, -1
1660	IF ( zu(k) <= rayleigh_damping_height ) THEN
1661	rdf(k) = rayleigh_damping_factor * &
1662	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
1663	/ ( rayleigh_damping_height - zu(nzb+1)))&
1664	)**2
1665	ENDIF
1666	ENDDO
1667	ENDIF
1668	ENDIF
1669	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1670
1671	!
1672	!-- Initialize the starting level and the vertical smoothing factor used for
1673	!-- the external pressure gradient
1674	dp_smooth_factor = 1.0
1675	IF ( dp_external ) THEN
1676	!
1677	!-- Set the starting level dp_level_ind_b only if it has not been set before
1678	!-- (e.g. in init_grid).
1679	IF ( dp_level_ind_b == 0 ) THEN
1680	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1681	dp_level_ind_b = ind_array(1) - 1 + nzb
1682	! MINLOC uses lower array bound 1
1683	ENDIF
1684	IF ( dp_smooth ) THEN
1685	dp_smooth_factor(:dp_level_ind_b) = 0.0
1686	DO k = dp_level_ind_b+1, nzt
1687	dp_smooth_factor(k) = 0.5 * ( 1.0 + SIN( pi * &
1688	( REAL( k - dp_level_ind_b ) / &
1689	REAL( nzt - dp_level_ind_b ) - 0.5 ) ) )
1690	ENDDO
1691	ENDIF
1692	ENDIF
1693
1694	!
1695	!-- Initialize damping zone for the potential temperature in case of
1696	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1697	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1698	ptdf_x = 0.0
1699	ptdf_y = 0.0
1700	IF ( bc_lr_dirrad ) THEN
1701	DO i = nxl, nxr
1702	IF ( ( i * dx ) < pt_damping_width ) THEN
1703	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5 * &
1704	REAL( pt_damping_width - i * dx ) / ( &
1705	REAL( pt_damping_width ) ) ) )**2
1706	ENDIF
1707	ENDDO
1708	ELSEIF ( bc_lr_raddir ) THEN
1709	DO i = nxl, nxr
1710	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1711	ptdf_x(i) = pt_damping_factor * &
1712	SIN( pi * 0.5 * ( ( i - nx ) * dx + pt_damping_width ) / &
1713	REAL( pt_damping_width ) )**2
1714	ENDIF
1715	ENDDO
1716	ELSEIF ( bc_ns_dirrad ) THEN
1717	DO j = nys, nyn
1718	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1719	ptdf_y(j) = pt_damping_factor * &
1720	SIN( pi * 0.5 * ( ( j - ny ) * dy + pt_damping_width ) / &
1721	REAL( pt_damping_width ) )**2
1722	ENDIF
1723	ENDDO
1724	ELSEIF ( bc_ns_raddir ) THEN
1725	DO j = nys, nyn
1726	IF ( ( j * dy ) < pt_damping_width ) THEN
1727	ptdf_y(j) = pt_damping_factor * &
1728	SIN( pi * 0.5 * ( pt_damping_width - j * dy ) / &
1729	REAL( pt_damping_width ) )**2
1730	ENDIF
1731	ENDDO
1732	ENDIF
1733
1734	!
1735	!-- Initialize local summation arrays for routine flow_statistics.
1736	!-- This is necessary because they may not yet have been initialized when they
1737	!-- are called from flow_statistics (or - depending on the chosen model run -
1738	!-- are never initialized)
1739	sums_divnew_l = 0.0
1740	sums_divold_l = 0.0
1741	sums_l_l = 0.0
1742	sums_up_fraction_l = 0.0
1743	sums_wsts_bc_l = 0.0
1744
1745	!
1746	!-- Pre-set masks for regional statistics. Default is the total model domain.
1747	!-- Ghost points are excluded because counting values at the ghost boundaries
1748	!-- would bias the statistics
1749	rmask = 1.0
1750	rmask(:,nxlg:nxl-1,:) = 0.0; rmask(:,nxr+1:nxrg,:) = 0.0
1751	rmask(nysg:nys-1,:,:) = 0.0; rmask(nyn+1:nyng,:,:) = 0.0
1752
1753	!
1754	!-- User-defined initializing actions. Check afterwards, if maximum number
1755	!-- of allowed timeseries is exceeded
1756	CALL user_init
1757
1758	IF ( dots_num > dots_max ) THEN
1759	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1760	' its maximum of dots_max = ', dots_max, &
1761	' &Please increase dots_max in modules.f90.'
1762	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1763	ENDIF
1764
1765	!
1766	!-- Input binary data file is not needed anymore. This line must be placed
1767	!-- after call of user_init!
1768	CALL close_file( 13 )
1769
1770	!
1771	!-- Compute total sum of active mask grid points
1772	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1773	!-- total domain
1774	!-- ngp_3d: number of grid points of the total domain
1775	ngp_2dh_outer_l = 0
1776	ngp_2dh_outer = 0
1777	ngp_2dh_s_inner_l = 0
1778	ngp_2dh_s_inner = 0
1779	ngp_2dh_l = 0
1780	ngp_2dh = 0
1781	ngp_3d_inner_l = 0.0
1782	ngp_3d_inner = 0
1783	ngp_3d = 0
1784	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1785
1786	DO sr = 0, statistic_regions
1787	DO i = nxl, nxr
1788	DO j = nys, nyn
1789	IF ( rmask(j,i,sr) == 1.0 ) THEN
1790	!
1791	!-- All xy-grid points
1792	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1793	!
1794	!-- xy-grid points above topography
1795	DO k = nzb_s_outer(j,i), nz + 1
1796	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1797	ENDDO
1798	DO k = nzb_s_inner(j,i), nz + 1
1799	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1800	ENDDO
1801	!
1802	!-- All grid points of the total domain above topography
1803	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1804	( nz - nzb_s_inner(j,i) + 2 )
1805	ENDIF
1806	ENDDO
1807	ENDDO
1808	ENDDO
1809
1810	sr = statistic_regions + 1
1811	#if defined( __parallel )
1812	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1813	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1814	comm2d, ierr )
1815	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1816	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1817	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1818	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1819	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1820	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1821	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1822	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1823	MPI_SUM, comm2d, ierr )
1824	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1825	#else
1826	ngp_2dh = ngp_2dh_l
1827	ngp_2dh_outer = ngp_2dh_outer_l
1828	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1829	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1830	#endif
1831
1832	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1833	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1834
1835	!
1836	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1837	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1838	!-- the respective subdomain lie below the surface topography
1839	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1840	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1841	ngp_3d_inner(:) )
1842	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1843
1844	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1845
1846
1847	END SUBROUTINE init_3d_model

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