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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1159

Last change on this file since 1159 was 1159, checked in by fricke, 11 years ago
Bugfix: In case of non-cyclic lateral boundary conditions, Neumann boundary conditions for the velocity components at the outflow are in fact radiation boundary conditions using the maximum phase velocity that ensures numerical stability (CFL-condition). Logical operator use_cmax is now used instead of bc_lr_dirneu/_neudir.
Property svn:keywords set to `Id`
File size: 64.1 KB

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

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