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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1096

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

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