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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1139

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

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