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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1060

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

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