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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1115

Last change on this file since 1115 was 1115, checked in by hoffmann, 11 years ago
optimization of two-moments cloud physics
Property svn:keywords set to `Id`
File size: 63.9 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	! unused variables removed
26	!
27	! Former revisions:
28	! -----------------
29	! $Id: init_3d_model.f90 1115 2013-03-26 18:16:16Z hoffmann $
30	!
31	! 1113 2013-03-10 02:48:14Z raasch
32	! openACC directive modified
33	!
34	! 1111 2013-03-08 23:54:10Z raasch
35	! openACC directives added for pres
36	! array diss allocated only if required
37	!
38	! 1092 2013-02-02 11:24:22Z raasch
39	! unused variables removed
40	!
41	! 1065 2012-11-22 17:42:36Z hoffmann
42	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
43	!
44	! 1053 2012-11-13 17:11:03Z hoffmann
45	! allocation and initialisation of necessary data arrays for the two-moment
46	! cloud physics scheme the two new prognostic equations (nr, qr):
47	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
48	! +tend_*, prr
49	!
50	! 1036 2012-10-22 13:43:42Z raasch
51	! code put under GPL (PALM 3.9)
52	!
53	! 1032 2012-10-21 13:03:21Z letzel
54	! save memory by not allocating pt_2 in case of neutral = .T.
55	!
56	! 1025 2012-10-07 16:04:41Z letzel
57	! bugfix: swap indices of mask for ghost boundaries
58	!
59	! 1015 2012-09-27 09:23:24Z raasch
60	! mask is set to zero for ghost boundaries
61	!
62	! 1010 2012-09-20 07:59:54Z raasch
63	! cpp switch __nopointer added for pointer free version
64	!
65	! 1003 2012-09-14 14:35:53Z raasch
66	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
67	!
68	! 1001 2012-09-13 14:08:46Z raasch
69	! all actions concerning leapfrog scheme removed
70	!
71	! 996 2012-09-07 10:41:47Z raasch
72	! little reformatting
73	!
74	! 978 2012-08-09 08:28:32Z fricke
75	! outflow damping layer removed
76	! roughness length for scalar quantites z0h added
77	! damping zone for the potential temperatur in case of non-cyclic lateral
78	! boundaries added
79	! initialization of ptdf_x, ptdf_y
80	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
81	!
82	! 849 2012-03-15 10:35:09Z raasch
83	! init_particles renamed lpm_init
84	!
85	! 825 2012-02-19 03:03:44Z raasch
86	! wang_collision_kernel renamed wang_kernel
87	!
88	! 790 2011-11-29 03:11:20Z raasch
89	! diss is also allocated in case that the Wang kernel is used
90	!
91	! 787 2011-11-28 12:49:05Z heinze $
92	! bugfix: call init_advec in every case - not only for inital runs
93	!
94	! 785 2011-11-28 09:47:19Z raasch
95	! initialization of rdf_sc
96	!
97	! 767 2011-10-14 06:39:12Z raasch
98	! adjustments concerning implementation of prescribed u,v-profiles
99	! bugfix: dirichlet_0 conditions for ug/vg moved to check_parameters
100	!
101	! 759 2011-09-15 13:58:31Z raasch
102	! Splitting of parallel I/O in blocks of PEs
103	! Bugfix: No zero assignments to volume_flow_initial and volume_flow_area in
104	! case of normal restart runs.
105	!
106	! 713 2011-03-30 14:21:21Z suehring
107	! weight_substep and weight_pres are given as fractions.
108	!
109	! 709 2011-03-30 09:31:40Z raasch
110	! formatting adjustments
111	!
112	! 707 2011-03-29 11:39:40Z raasch
113	! p_sub renamed p_loc and allocated depending on the chosen pressure solver,
114	! initial assignments of zero to array p for iterative solvers only,
115	! bc_lr/ns replaced by bc_lr/ns_dirrad/raddir
116	!
117	! 680 2011-02-04 23:16:06Z gryschka
118	! bugfix: volume_flow_control
119	!
120	! 673 2011-01-18 16:19:48Z suehring
121	! weight_substep (moved from advec_ws) and weight_pres added.
122	! Allocate p_sub when using Multigrid or SOR solver.
123	! Call of ws_init moved behind the if requests.
124	!
125	! 667 2010-12-23 12:06:00Z suehring/gryschka
126	! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng in loops and
127	! allocation of arrays. Calls of exchange_horiz are modified.
128	! Call ws_init to initialize arrays needed for calculating statisticas and for
129	! optimization when ws-scheme is used.
130	! Initial volume flow is now calculated by using the variable hom_sum.
131	! Therefore the correction of initial volume flow for non-flat topography
132	! removed (removed u_nzb_p1_for_vfc and v_nzb_p1_for_vfc)
133	! Changed surface boundary conditions for u and v in case of ibc_uv_b == 0 from
134	! mirror to Dirichlet boundary conditions (u=v=0), so that k=nzb is
135	! representative for the height z0.
136	! Bugfix: type conversion of '1' to 64bit for the MAX function (ngp_3d_inner)
137	!
138	! 622 2010-12-10 08:08:13Z raasch
139	! optional barriers included in order to speed up collective operations
140	!
141	! 560 2010-09-09 10:06:09Z weinreis
142	! bugfix: correction of calculating ngp_3d for 64 bit
143	!
144	! 485 2010-02-05 10:57:51Z raasch
145	! calculation of ngp_3d + ngp_3d_inner changed because they have now 64 bit
146	!
147	! 407 2009-12-01 15:01:15Z maronga
148	! var_ts is replaced by dots_max
149	! Enabled passive scalar/humidity wall fluxes for non-flat topography
150	!
151	! 388 2009-09-23 09:40:33Z raasch
152	! Initialization of prho added.
153	! bugfix: correction of initial volume flow for non-flat topography
154	! bugfix: zero initialization of arrays within buildings for 'cyclic_fill'
155	! bugfix: avoid that ngp_2dh_s_inner becomes zero
156	! initializing_actions='read_data_for_recycling' renamed to 'cyclic_fill', now
157	! independent of turbulent_inflow
158	! Output of messages replaced by message handling routine.
159	! Set the starting level and the vertical smoothing factor used for
160	! the external pressure gradient
161	! +conserve_volume_flow_mode: 'default', 'initial_profiles', 'inflow_profile'
162	! and 'bulk_velocity'
163	! If the inversion height calculated by the prerun is zero,
164	! inflow_damping_height must be explicitly specified.
165	!
166	! 181 2008-07-30 07:07:47Z raasch
167	! bugfix: zero assignments to tendency arrays in case of restarts,
168	! further extensions and modifications in the initialisation of the plant
169	! canopy model,
170	! allocation of hom_sum moved to parin, initialization of spectrum_x\|y directly
171	! after allocating theses arrays,
172	! read data for recycling added as new initialization option,
173	! dummy allocation for diss
174	!
175	! 138 2007-11-28 10:03:58Z letzel
176	! New counter ngp_2dh_s_inner.
177	! Allow new case bc_uv_t = 'dirichlet_0' for channel flow.
178	! Corrected calculation of initial volume flow for 'set_1d-model_profiles' and
179	! 'set_constant_profiles' in case of buildings in the reference cross-sections.
180	!
181	! 108 2007-08-24 15:10:38Z letzel
182	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
183	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
184	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
185	! Rayleigh damping for ocean, optionally calculate km and kh from initial
186	! TKE e_init
187	!
188	! 97 2007-06-21 08:23:15Z raasch
189	! Initialization of salinity, call of init_ocean
190	!
191	! 87 2007-05-22 15:46:47Z raasch
192	! var_hom and var_sum renamed pr_palm
193	!
194	! 75 2007-03-22 09:54:05Z raasch
195	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
196	! bugfix for cases with the outflow damping layer extending over more than one
197	! subdomain, moisture renamed humidity,
198	! new initializing action "by_user" calls user_init_3d_model,
199	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
200	! initial velocities at nzb+1 are regarded for volume
201	! flow control in case they have been set zero before (to avoid small timesteps)
202	! -uvmean_outflow, uxrp, vynp eliminated
203	!
204	! 19 2007-02-23 04:53:48Z raasch
205	! +handling of top fluxes
206	!
207	! RCS Log replace by Id keyword, revision history cleaned up
208	!
209	! Revision 1.49 2006/08/22 15:59:07 raasch
210	! No optimization of this file on the ibmy (Yonsei Univ.)
211	!
212	! Revision 1.1 1998/03/09 16:22:22 raasch
213	! Initial revision
214	!
215	!
216	! Description:
217	! ------------
218	! Allocation of arrays and initialization of the 3D model via
219	! a) pre-run the 1D model
220	! or
221	! b) pre-set constant linear profiles
222	! or
223	! c) read values of a previous run
224	!------------------------------------------------------------------------------!
225
226	USE advec_ws
227	USE arrays_3d
228	USE averaging
229	USE cloud_parameters
230	USE constants
231	USE control_parameters
232	USE cpulog
233	USE grid_variables
234	USE indices
235	USE interfaces
236	USE model_1d
237	USE netcdf_control
238	USE particle_attributes
239	USE pegrid
240	USE profil_parameter
241	USE random_function_mod
242	USE statistics
243	USE transpose_indices
244
245	IMPLICIT NONE
246
247	INTEGER :: i, ind_array(1), j, k, sr
248
249	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l
250
251	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l, &
252	ngp_2dh_s_inner_l
253
254	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
255
256	REAL, DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l, ngp_3d_inner_tmp
257
258
259	!
260	!-- Allocate arrays
261	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
262	ngp_3d(0:statistic_regions), &
263	ngp_3d_inner(0:statistic_regions), &
264	ngp_3d_inner_l(0:statistic_regions), &
265	ngp_3d_inner_tmp(0:statistic_regions), &
266	sums_divnew_l(0:statistic_regions), &
267	sums_divold_l(0:statistic_regions) )
268	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
269	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
270	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
271	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
272	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
273	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
274	sums(nzb:nzt+1,pr_palm+max_pr_user), &
275	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
276	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
277	sums_up_fraction_l(10,3,0:statistic_regions), &
278	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
279	ts_value(dots_max,0:statistic_regions) )
280	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
281
282	ALLOCATE( rif(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
283	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
284	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
285	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
286	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
287	z0h(nysg:nyng,nxlg:nxrg) )
288
289	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
290	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
291	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
292	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
293	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
294
295	#if defined( __nopointer )
296	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
297	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
298	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
299	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
300	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
301	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
302	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
303	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
304	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
305	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
306	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
307	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
308	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
309	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
310	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
311	#else
312	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
313	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
314	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
315	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
316	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
317	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
318	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
319	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
320	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
321	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
322	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
323	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
324	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
325	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
326	IF ( .NOT. neutral ) THEN
327	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
328	ENDIF
329	#endif
330
331	!
332	!-- Following array is required for perturbation pressure within the iterative
333	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
334	!-- the weighted average of the substeps and cannot be used in the Poisson
335	!-- solver.
336	IF ( psolver == 'sor' ) THEN
337	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
338	ELSEIF ( psolver == 'multigrid' ) THEN
339	!
340	!-- For performance reasons, multigrid is using one ghost layer only
341	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
342	ENDIF
343
344	!
345	!-- Array for storing constant coeffficients of the tridiagonal solver
346	IF ( psolver == 'poisfft' ) THEN
347	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
348	ENDIF
349
350	IF ( humidity .OR. passive_scalar ) THEN
351	!
352	!-- 2D-humidity/scalar arrays
353	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
354	qsws(nysg:nyng,nxlg:nxrg), &
355	qswst(nysg:nyng,nxlg:nxrg) )
356
357	!
358	!-- 3D-humidity/scalar arrays
359	#if defined( __nopointer )
360	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
361	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
362	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
363	#else
364	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
365	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
366	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
367	#endif
368
369	!
370	!-- 3D-arrays needed for humidity only
371	IF ( humidity ) THEN
372	#if defined( __nopointer )
373	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
374	#else
375	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
376	#endif
377
378	IF ( cloud_physics ) THEN
379
380	!
381	!-- Liquid water content
382	#if defined( __nopointer )
383	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
384	#else
385	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
386	#endif
387	!
388	!-- Precipitation amount and rate (only needed if output is switched)
389	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
390	precipitation_rate(nysg:nyng,nxlg:nxrg) )
391
392	IF ( icloud_scheme == 0 ) THEN
393	!
394	!-- 1D-arrays
395	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
396	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
397	!
398	!-- 3D-cloud water content
399	#if defined( __nopointer )
400	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
401	#else
402	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
403	#endif
404	!
405	!-- 3D-tendency arrays
406	ALLOCATE( tend_pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
407	tend_q(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
408
409	IF ( precipitation ) THEN
410	!
411	!-- 1D-arrays
412	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
413	!
414	!
415	!-- 3D-tendency arrays
416	ALLOCATE( tend_nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
417	tend_qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
418	!
419	!-- 2D-rain water content and rain drop concentration arrays
420	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
421	qrsws(nysg:nyng,nxlg:nxrg), &
422	qrswst(nysg:nyng,nxlg:nxrg), &
423	nrs(nysg:nyng,nxlg:nxrg), &
424	nrsws(nysg:nyng,nxlg:nxrg), &
425	nrswst(nysg:nyng,nxlg:nxrg) )
426	!
427	!-- 3D-rain water content, rain drop concentration arrays
428	#if defined( __nopointer )
429	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
430	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
431	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
432	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
433	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
434	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
435	#else
436	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
437	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
438	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
439	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
440	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
441	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
442	#endif
443	!
444	!-- 3d-precipitation rate
445	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
446	ENDIF
447
448	ENDIF
449	ENDIF
450
451	IF ( cloud_droplets ) THEN
452	!
453	!-- Liquid water content, change in liquid water content
454	#if defined( __nopointer )
455	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
456	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
457	#else
458	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
459	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
460	#endif
461	!
462	!-- Real volume of particles (with weighting), volume of particles
463	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
464	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
465	ENDIF
466
467	ENDIF
468
469	ENDIF
470
471	IF ( ocean ) THEN
472	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
473	saswst(nysg:nyng,nxlg:nxrg) )
474	#if defined( __nopointer )
475	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
476	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
477	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
478	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
479	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
480	#else
481	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
482	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
483	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
484	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
485	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
486	prho => prho_1
487	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
488	! density to be apointer
489	#endif
490	IF ( humidity_remote ) THEN
491	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
492	qswst_remote = 0.0
493	ENDIF
494	ENDIF
495
496	!
497	!-- 3D-array for storing the dissipation, needed for calculating the sgs
498	!-- particle velocities
499	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence ) THEN
500	ALLOCATE ( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
501	ENDIF
502
503	IF ( dt_dosp /= 9999999.9 ) THEN
504	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
505	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
506	spectrum_x = 0.0
507	spectrum_y = 0.0
508	ENDIF
509
510	!
511	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
512	IF ( plant_canopy ) THEN
513	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
514	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
515	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
516	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
517	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
518
519	IF ( passive_scalar ) THEN
520	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
521	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
522	ENDIF
523
524	IF ( cthf /= 0.0 ) THEN
525	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
526	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
527	ENDIF
528
529	ENDIF
530
531	!
532	!-- 4D-array for storing the Rif-values at vertical walls
533	IF ( topography /= 'flat' ) THEN
534	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
535	rif_wall = 0.0
536	ENDIF
537
538	!
539	!-- Arrays to store velocity data from t-dt and the phase speeds which
540	!-- are needed for radiation boundary conditions
541	IF ( outflow_l ) THEN
542	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
543	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
544	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
545	ENDIF
546	IF ( outflow_r ) THEN
547	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
548	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
549	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
550	ENDIF
551	IF ( outflow_l .OR. outflow_r ) THEN
552	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
553	c_w(nzb:nzt+1,nysg:nyng) )
554	ENDIF
555	IF ( outflow_s ) THEN
556	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
557	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
558	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
559	ENDIF
560	IF ( outflow_n ) THEN
561	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
562	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
563	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
564	ENDIF
565	IF ( outflow_s .OR. outflow_n ) THEN
566	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
567	c_w(nzb:nzt+1,nxlg:nxrg) )
568	ENDIF
569	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
570	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
571	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
572	ENDIF
573
574
575	#if ! defined( __nopointer )
576	!
577	!-- Initial assignment of the pointers
578	e => e_1; e_p => e_2; te_m => e_3
579	IF ( .NOT. neutral ) THEN
580	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
581	ELSE
582	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
583	ENDIF
584	u => u_1; u_p => u_2; tu_m => u_3
585	v => v_1; v_p => v_2; tv_m => v_3
586	w => w_1; w_p => w_2; tw_m => w_3
587
588	IF ( humidity .OR. passive_scalar ) THEN
589	q => q_1; q_p => q_2; tq_m => q_3
590	IF ( humidity ) THEN
591	vpt => vpt_1
592	IF ( cloud_physics ) THEN
593	ql => ql_1
594	IF ( icloud_scheme == 0 ) THEN
595	qc => qc_1
596	IF ( precipitation ) THEN
597	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
598	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
599	ENDIF
600	ENDIF
601	ENDIF
602	ENDIF
603	IF ( cloud_droplets ) THEN
604	ql => ql_1
605	ql_c => ql_2
606	ENDIF
607	ENDIF
608
609	IF ( ocean ) THEN
610	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
611	ENDIF
612	#endif
613
614	!
615	!-- Allocate arrays containing the RK coefficient for calculation of
616	!-- perturbation pressure and turbulent fluxes. At this point values are
617	!-- set for pressure calculation during initialization (where no timestep
618	!-- is done). Further below the values needed within the timestep scheme
619	!-- will be set.
620	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
621	weight_pres(1:intermediate_timestep_count_max) )
622	weight_substep = 1.0
623	weight_pres = 1.0
624	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
625
626	!
627	!-- Initialize model variables
628	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
629	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
630	!
631	!-- First model run of a possible job queue.
632	!-- Initial profiles of the variables must be computes.
633	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
634	!
635	!-- Use solutions of the 1D model as initial profiles,
636	!-- start 1D model
637	CALL init_1d_model
638	!
639	!-- Transfer initial profiles to the arrays of the 3D model
640	DO i = nxlg, nxrg
641	DO j = nysg, nyng
642	e(:,j,i) = e1d
643	kh(:,j,i) = kh1d
644	km(:,j,i) = km1d
645	pt(:,j,i) = pt_init
646	u(:,j,i) = u1d
647	v(:,j,i) = v1d
648	ENDDO
649	ENDDO
650
651	IF ( humidity .OR. passive_scalar ) THEN
652	DO i = nxlg, nxrg
653	DO j = nysg, nyng
654	q(:,j,i) = q_init
655	ENDDO
656	ENDDO
657	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
658	precipitation ) THEN
659	DO i = nxlg, nxrg
660	DO j = nysg, nyng
661	qr(:,j,i) = 0.0
662	nr(:,j,i) = 0.0
663	ENDDO
664	ENDDO
665	!
666	!-- Initialze nc_1d with default value
667	nc_1d(:) = nc_const
668
669	ENDIF
670	ENDIF
671
672	IF ( .NOT. constant_diffusion ) THEN
673	DO i = nxlg, nxrg
674	DO j = nysg, nyng
675	e(:,j,i) = e1d
676	ENDDO
677	ENDDO
678	!
679	!-- Store initial profiles for output purposes etc.
680	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
681
682	IF ( prandtl_layer ) THEN
683	rif = rif1d(nzb+1)
684	ts = 0.0 ! could actually be computed more accurately in the
685	! 1D model. Update when opportunity arises.
686	us = us1d
687	usws = usws1d
688	vsws = vsws1d
689	ELSE
690	ts = 0.0 ! must be set, because used in
691	rif = 0.0 ! flowste
692	us = 0.0
693	usws = 0.0
694	vsws = 0.0
695	ENDIF
696
697	ELSE
698	e = 0.0 ! must be set, because used in
699	rif = 0.0 ! flowste
700	ts = 0.0
701	us = 0.0
702	usws = 0.0
703	vsws = 0.0
704	ENDIF
705	uswst = top_momentumflux_u
706	vswst = top_momentumflux_v
707
708	!
709	!-- In every case qs = 0.0 (see also pt)
710	!-- This could actually be computed more accurately in the 1D model.
711	!-- Update when opportunity arises!
712	IF ( humidity .OR. passive_scalar ) THEN
713	qs = 0.0
714	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
715	precipitation ) THEN
716	qrs = 0.0
717	nrs = 0.0
718	ENDIF
719	ENDIF
720
721	!
722	!-- inside buildings set velocities back to zero
723	IF ( topography /= 'flat' ) THEN
724	DO i = nxl-1, nxr+1
725	DO j = nys-1, nyn+1
726	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
727	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
728	ENDDO
729	ENDDO
730
731	!
732	!-- WARNING: The extra boundary conditions set after running the
733	!-- ------- 1D model impose an error on the divergence one layer
734	!-- below the topography; need to correct later
735	!-- ATTENTION: Provisional correction for Piacsek & Williams
736	!-- --------- advection scheme: keep u and v zero one layer below
737	!-- the topography.
738	IF ( ibc_uv_b == 1 ) THEN
739	!
740	!-- Neumann condition
741	DO i = nxl-1, nxr+1
742	DO j = nys-1, nyn+1
743	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
744	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
745	ENDDO
746	ENDDO
747
748	ENDIF
749
750	ENDIF
751
752	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
753	THEN
754	!
755	!-- Use constructed initial profiles (velocity constant with height,
756	!-- temperature profile with constant gradient)
757	DO i = nxlg, nxrg
758	DO j = nysg, nyng
759	pt(:,j,i) = pt_init
760	u(:,j,i) = u_init
761	v(:,j,i) = v_init
762	ENDDO
763	ENDDO
764
765	!
766	!-- Set initial horizontal velocities at the lowest computational grid
767	!-- levels to zero in order to avoid too small time steps caused by the
768	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
769	!-- in the limiting formula!). The original values are stored to be later
770	!-- used for volume flow control.
771	DO i = nxlg, nxrg
772	DO j = nysg, nyng
773	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
774	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
775	ENDDO
776	ENDDO
777
778	IF ( humidity .OR. passive_scalar ) THEN
779	DO i = nxlg, nxrg
780	DO j = nysg, nyng
781	q(:,j,i) = q_init
782	ENDDO
783	ENDDO
784	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
785	!
786	!-- Initialze nc_1d with default value
787	nc_1d(:) = nc_const
788
789	IF ( precipitation ) THEN
790	DO i = nxlg, nxrg
791	DO j = nysg, nyng
792	qr(:,j,i) = 0.0
793	nr(:,j,i) = 0.0
794	ENDDO
795	ENDDO
796	ENDIF
797
798	ENDIF
799	ENDIF
800
801	IF ( ocean ) THEN
802	DO i = nxlg, nxrg
803	DO j = nysg, nyng
804	sa(:,j,i) = sa_init
805	ENDDO
806	ENDDO
807	ENDIF
808
809	IF ( constant_diffusion ) THEN
810	km = km_constant
811	kh = km / prandtl_number
812	e = 0.0
813	ELSEIF ( e_init > 0.0 ) THEN
814	DO k = nzb+1, nzt
815	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
816	ENDDO
817	km(nzb,:,:) = km(nzb+1,:,:)
818	km(nzt+1,:,:) = km(nzt,:,:)
819	kh = km / prandtl_number
820	e = e_init
821	ELSE
822	IF ( .NOT. ocean ) THEN
823	kh = 0.01 ! there must exist an initial diffusion, because
824	km = 0.01 ! otherwise no TKE would be produced by the
825	! production terms, as long as not yet
826	! e = (u/cm)*2 at k=nzb+1
827	ELSE
828	kh = 0.00001
829	km = 0.00001
830	ENDIF
831	e = 0.0
832	ENDIF
833	rif = 0.0
834	ts = 0.0
835	us = 0.0
836	usws = 0.0
837	uswst = top_momentumflux_u
838	vsws = 0.0
839	vswst = top_momentumflux_v
840	IF ( humidity .OR. passive_scalar ) qs = 0.0
841
842	!
843	!-- Compute initial temperature field and other constants used in case
844	!-- of a sloping surface
845	IF ( sloping_surface ) CALL init_slope
846
847	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
848	THEN
849	!
850	!-- Initialization will completely be done by the user
851	CALL user_init_3d_model
852
853	ENDIF
854	!
855	!-- Bottom boundary
856	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
857	u(nzb,:,:) = 0.0
858	v(nzb,:,:) = 0.0
859	ENDIF
860
861	!
862	!-- Apply channel flow boundary condition
863	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
864	u(nzt+1,:,:) = 0.0
865	v(nzt+1,:,:) = 0.0
866	ENDIF
867
868	!
869	!-- Calculate virtual potential temperature
870	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
871
872	!
873	!-- Store initial profiles for output purposes etc.
874	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
875	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
876	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
877	hom(nzb,1,5,:) = 0.0
878	hom(nzb,1,6,:) = 0.0
879	ENDIF
880	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
881	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
882	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
883
884	IF ( ocean ) THEN
885	!
886	!-- Store initial salinity profile
887	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
888	ENDIF
889
890	IF ( humidity ) THEN
891	!
892	!-- Store initial profile of total water content, virtual potential
893	!-- temperature
894	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
895	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
896	IF ( cloud_physics .OR. cloud_droplets ) THEN
897	!
898	!-- Store initial profile of specific humidity and potential
899	!-- temperature
900	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
901	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
902	ENDIF
903	ENDIF
904
905	IF ( passive_scalar ) THEN
906	!
907	!-- Store initial scalar profile
908	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
909	ENDIF
910
911	!
912	!-- Initialize fluxes at bottom surface
913	IF ( use_surface_fluxes ) THEN
914
915	IF ( constant_heatflux ) THEN
916	!
917	!-- Heat flux is prescribed
918	IF ( random_heatflux ) THEN
919	CALL disturb_heatflux
920	ELSE
921	shf = surface_heatflux
922	!
923	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
924	IF ( TRIM( topography ) /= 'flat' ) THEN
925	DO i = nxlg, nxrg
926	DO j = nysg, nyng
927	IF ( nzb_s_inner(j,i) /= 0 ) THEN
928	shf(j,i) = wall_heatflux(0)
929	ENDIF
930	ENDDO
931	ENDDO
932	ENDIF
933	ENDIF
934	ENDIF
935
936	!
937	!-- Determine the near-surface water flux
938	IF ( humidity .OR. passive_scalar ) THEN
939	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
940	precipitation ) THEN
941	qrsws = 0.0
942	nrsws = 0.0
943	ENDIF
944	IF ( constant_waterflux ) THEN
945	qsws = surface_waterflux
946	!
947	!-- Over topography surface_waterflux is replaced by
948	!-- wall_humidityflux(0)
949	IF ( TRIM( topography ) /= 'flat' ) THEN
950	wall_qflux = wall_humidityflux
951	DO i = nxlg, nxrg
952	DO j = nysg, nyng
953	IF ( nzb_s_inner(j,i) /= 0 ) THEN
954	qsws(j,i) = wall_qflux(0)
955	ENDIF
956	ENDDO
957	ENDDO
958	ENDIF
959	ENDIF
960	ENDIF
961
962	ENDIF
963
964	!
965	!-- Initialize fluxes at top surface
966	!-- Currently, only the heatflux and salinity flux can be prescribed.
967	!-- The latent flux is zero in this case!
968	IF ( use_top_fluxes ) THEN
969
970	IF ( constant_top_heatflux ) THEN
971	!
972	!-- Heat flux is prescribed
973	tswst = top_heatflux
974
975	IF ( humidity .OR. passive_scalar ) THEN
976	qswst = 0.0
977	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
978	precipitation ) THEN
979	nrswst = 0.0
980	qrswst = 0.0
981	ENDIF
982	ENDIF
983
984	IF ( ocean ) THEN
985	saswsb = bottom_salinityflux
986	saswst = top_salinityflux
987	ENDIF
988	ENDIF
989
990	!
991	!-- Initialization in case of a coupled model run
992	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
993	tswst = 0.0
994	ENDIF
995
996	ENDIF
997
998	!
999	!-- Initialize Prandtl layer quantities
1000	IF ( prandtl_layer ) THEN
1001
1002	z0 = roughness_length
1003	z0h = z0h_factor * z0
1004
1005	IF ( .NOT. constant_heatflux ) THEN
1006	!
1007	!-- Surface temperature is prescribed. Here the heat flux cannot be
1008	!-- simply estimated, because therefore rif, u* and theta* would have
1009	!-- to be computed by iteration. This is why the heat flux is assumed
1010	!-- to be zero before the first time step. It approaches its correct
1011	!-- value in the course of the first few time steps.
1012	shf = 0.0
1013	ENDIF
1014
1015	IF ( humidity .OR. passive_scalar ) THEN
1016	IF ( .NOT. constant_waterflux ) qsws = 0.0
1017	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1018	precipitation ) THEN
1019	qrsws = 0.0
1020	nrsws = 0.0
1021	ENDIF
1022	ENDIF
1023
1024	ENDIF
1025
1026
1027	!
1028	!-- For the moment, vertical velocity is zero
1029	w = 0.0
1030
1031	!
1032	!-- Initialize array sums (must be defined in first call of pres)
1033	sums = 0.0
1034
1035	!
1036	!-- In case of iterative solvers, p must get an initial value
1037	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0
1038
1039	!
1040	!-- Treating cloud physics, liquid water content and precipitation amount
1041	!-- are zero at beginning of the simulation
1042	IF ( cloud_physics ) THEN
1043	ql = 0.0
1044	IF ( precipitation ) precipitation_amount = 0.0
1045	IF ( icloud_scheme == 0 ) THEN
1046	qc = 0.0
1047	nc_1d = nc_const
1048	ENDIF
1049	ENDIF
1050	!
1051	!-- Impose vortex with vertical axis on the initial velocity profile
1052	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1053	CALL init_rankine
1054	ENDIF
1055
1056	!
1057	!-- Impose temperature anomaly (advection test only)
1058	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1059	CALL init_pt_anomaly
1060	ENDIF
1061
1062	!
1063	!-- If required, change the surface temperature at the start of the 3D run
1064	IF ( pt_surface_initial_change /= 0.0 ) THEN
1065	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1066	ENDIF
1067
1068	!
1069	!-- If required, change the surface humidity/scalar at the start of the 3D
1070	!-- run
1071	IF ( ( humidity .OR. passive_scalar ) .AND. &
1072	q_surface_initial_change /= 0.0 ) THEN
1073	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1074	ENDIF
1075	!
1076	!-- Initialize the random number generator (from numerical recipes)
1077	CALL random_function_ini
1078
1079	!
1080	!-- Initialize old and new time levels.
1081	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1082	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1083
1084	IF ( humidity .OR. passive_scalar ) THEN
1085	tq_m = 0.0
1086	q_p = q
1087	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1088	precipitation ) THEN
1089	tqr_m = 0.0
1090	qr_p = qr
1091	tnr_m = 0.0
1092	nr_p = nr
1093	ENDIF
1094	ENDIF
1095
1096	IF ( ocean ) THEN
1097	tsa_m = 0.0
1098	sa_p = sa
1099	ENDIF
1100
1101
1102	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1103	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1104	THEN
1105	!
1106	!-- When reading data for cyclic fill of 3D prerun data files, read
1107	!-- some of the global variables from the restart file which are required
1108	!-- for initializing the inflow
1109	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1110
1111	DO i = 0, io_blocks-1
1112	IF ( i == io_group ) THEN
1113	CALL read_parts_of_var_list
1114	CALL close_file( 13 )
1115	ENDIF
1116	#if defined( __parallel )
1117	CALL MPI_BARRIER( comm2d, ierr )
1118	#endif
1119	ENDDO
1120
1121	ENDIF
1122
1123	!
1124	!-- Read binary data from restart file
1125	DO i = 0, io_blocks-1
1126	IF ( i == io_group ) THEN
1127	CALL read_3d_binary
1128	ENDIF
1129	#if defined( __parallel )
1130	CALL MPI_BARRIER( comm2d, ierr )
1131	#endif
1132	ENDDO
1133
1134	!
1135	!-- Initialization of the turbulence recycling method
1136	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1137	turbulent_inflow ) THEN
1138	!
1139	!-- First store the profiles to be used at the inflow.
1140	!-- These profiles are the (temporally) and horizontally averaged vertical
1141	!-- profiles from the prerun. Alternatively, prescribed profiles
1142	!-- for u,v-components can be used.
1143	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
1144
1145	IF ( use_prescribed_profile_data ) THEN
1146	mean_inflow_profiles(:,1) = u_init ! u
1147	mean_inflow_profiles(:,2) = v_init ! v
1148	ELSE
1149	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1150	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1151	ENDIF
1152	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1153	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1154
1155	!
1156	!-- If necessary, adjust the horizontal flow field to the prescribed
1157	!-- profiles
1158	IF ( use_prescribed_profile_data ) THEN
1159	DO i = nxlg, nxrg
1160	DO j = nysg, nyng
1161	DO k = nzb, nzt+1
1162	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1163	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1164	ENDDO
1165	ENDDO
1166	ENDDO
1167	ENDIF
1168
1169	!
1170	!-- Use these mean profiles at the inflow (provided that Dirichlet
1171	!-- conditions are used)
1172	IF ( inflow_l ) THEN
1173	DO j = nysg, nyng
1174	DO k = nzb, nzt+1
1175	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1176	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1177	w(k,j,nxlg:-1) = 0.0
1178	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1179	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1180	ENDDO
1181	ENDDO
1182	ENDIF
1183
1184	!
1185	!-- Calculate the damping factors to be used at the inflow. For a
1186	!-- turbulent inflow the turbulent fluctuations have to be limited
1187	!-- vertically because otherwise the turbulent inflow layer will grow
1188	!-- in time.
1189	IF ( inflow_damping_height == 9999999.9 ) THEN
1190	!
1191	!-- Default: use the inversion height calculated by the prerun; if
1192	!-- this is zero, inflow_damping_height must be explicitly
1193	!-- specified.
1194	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0 ) THEN
1195	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1196	ELSE
1197	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1198	'explicitly specified because&the inversion height ', &
1199	'calculated by the prerun is zero.'
1200	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1201	ENDIF
1202
1203	ENDIF
1204
1205	IF ( inflow_damping_width == 9999999.9 ) THEN
1206	!
1207	!-- Default for the transition range: one tenth of the undamped
1208	!-- layer
1209	inflow_damping_width = 0.1 * inflow_damping_height
1210
1211	ENDIF
1212
1213	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1214
1215	DO k = nzb, nzt+1
1216
1217	IF ( zu(k) <= inflow_damping_height ) THEN
1218	inflow_damping_factor(k) = 1.0
1219	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1220	inflow_damping_factor(k) = 1.0 - &
1221	( zu(k) - inflow_damping_height ) / &
1222	inflow_damping_width
1223	ELSE
1224	inflow_damping_factor(k) = 0.0
1225	ENDIF
1226
1227	ENDDO
1228
1229	ENDIF
1230
1231	!
1232	!-- Inside buildings set velocities and TKE back to zero
1233	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1234	topography /= 'flat' ) THEN
1235	!
1236	!-- Inside buildings set velocities and TKE back to zero.
1237	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1238	!-- maybe revise later.
1239	DO i = nxlg, nxrg
1240	DO j = nysg, nyng
1241	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1242	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1243	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1244	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1245	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1246	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1247	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1248	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1249	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1250	ENDDO
1251	ENDDO
1252
1253	ENDIF
1254
1255	!
1256	!-- Calculate initial temperature field and other constants used in case
1257	!-- of a sloping surface
1258	IF ( sloping_surface ) CALL init_slope
1259
1260	!
1261	!-- Initialize new time levels (only done in order to set boundary values
1262	!-- including ghost points)
1263	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1264	IF ( humidity .OR. passive_scalar ) THEN
1265	q_p = q
1266	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1267	precipitation ) THEN
1268	qr_p = qr
1269	nr_p = nr
1270	ENDIF
1271	ENDIF
1272	IF ( ocean ) sa_p = sa
1273
1274	!
1275	!-- Allthough tendency arrays are set in prognostic_equations, they have
1276	!-- have to be predefined here because they are used (but multiplied with 0)
1277	!-- there before they are set.
1278	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1279	IF ( humidity .OR. passive_scalar ) THEN
1280	tq_m = 0.0
1281	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1282	precipitation ) THEN
1283	tqr_m = 0.0
1284	tnr_m = 0.0
1285	ENDIF
1286	ENDIF
1287	IF ( ocean ) tsa_m = 0.0
1288
1289	ELSE
1290	!
1291	!-- Actually this part of the programm should not be reached
1292	message_string = 'unknown initializing problem'
1293	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1294	ENDIF
1295
1296
1297	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1298	!
1299	!-- Initialize old timelevels needed for radiation boundary conditions
1300	IF ( outflow_l ) THEN
1301	u_m_l(:,:,:) = u(:,:,1:2)
1302	v_m_l(:,:,:) = v(:,:,0:1)
1303	w_m_l(:,:,:) = w(:,:,0:1)
1304	ENDIF
1305	IF ( outflow_r ) THEN
1306	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1307	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1308	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1309	ENDIF
1310	IF ( outflow_s ) THEN
1311	u_m_s(:,:,:) = u(:,0:1,:)
1312	v_m_s(:,:,:) = v(:,1:2,:)
1313	w_m_s(:,:,:) = w(:,0:1,:)
1314	ENDIF
1315	IF ( outflow_n ) THEN
1316	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1317	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1318	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1319	ENDIF
1320
1321	ENDIF
1322
1323	!
1324	!-- Calculate the initial volume flow at the right and north boundary
1325	IF ( conserve_volume_flow ) THEN
1326
1327	IF ( use_prescribed_profile_data ) THEN
1328
1329	volume_flow_initial_l = 0.0
1330	volume_flow_area_l = 0.0
1331
1332	IF ( nxr == nx ) THEN
1333	DO j = nys, nyn
1334	DO k = nzb_2d(j,nx)+1, nzt
1335	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1336	u_init(k) * dzw(k)
1337	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1338	ENDDO
1339	ENDDO
1340	ENDIF
1341
1342	IF ( nyn == ny ) THEN
1343	DO i = nxl, nxr
1344	DO k = nzb_2d(ny,i)+1, nzt
1345	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1346	v_init(k) * dzw(k)
1347	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1348	ENDDO
1349	ENDDO
1350	ENDIF
1351
1352	#if defined( __parallel )
1353	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1354	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1355	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1356	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1357
1358	#else
1359	volume_flow_initial = volume_flow_initial_l
1360	volume_flow_area = volume_flow_area_l
1361	#endif
1362
1363	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1364
1365	volume_flow_initial_l = 0.0
1366	volume_flow_area_l = 0.0
1367
1368	IF ( nxr == nx ) THEN
1369	DO j = nys, nyn
1370	DO k = nzb_2d(j,nx)+1, nzt
1371	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1372	hom_sum(k,1,0) * dzw(k)
1373	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1374	ENDDO
1375	ENDDO
1376	ENDIF
1377
1378	IF ( nyn == ny ) THEN
1379	DO i = nxl, nxr
1380	DO k = nzb_2d(ny,i)+1, nzt
1381	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1382	hom_sum(k,2,0) * dzw(k)
1383	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1384	ENDDO
1385	ENDDO
1386	ENDIF
1387
1388	#if defined( __parallel )
1389	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1390	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1391	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1392	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1393
1394	#else
1395	volume_flow_initial = volume_flow_initial_l
1396	volume_flow_area = volume_flow_area_l
1397	#endif
1398
1399	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1400
1401	volume_flow_initial_l = 0.0
1402	volume_flow_area_l = 0.0
1403
1404	IF ( nxr == nx ) THEN
1405	DO j = nys, nyn
1406	DO k = nzb_2d(j,nx)+1, nzt
1407	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1408	u(k,j,nx) * dzw(k)
1409	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1410	ENDDO
1411	ENDDO
1412	ENDIF
1413
1414	IF ( nyn == ny ) THEN
1415	DO i = nxl, nxr
1416	DO k = nzb_2d(ny,i)+1, nzt
1417	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1418	v(k,ny,i) * dzw(k)
1419	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1420	ENDDO
1421	ENDDO
1422	ENDIF
1423
1424	#if defined( __parallel )
1425	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1426	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1427	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1428	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1429
1430	#else
1431	volume_flow_initial = volume_flow_initial_l
1432	volume_flow_area = volume_flow_area_l
1433	#endif
1434
1435	ENDIF
1436
1437	!
1438	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1439	!-- from u\|v_bulk instead
1440	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1441	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1442	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1443	ENDIF
1444
1445	ENDIF
1446
1447	!
1448	!-- Initialize quantities for special advections schemes
1449	CALL init_advec
1450
1451	!
1452	!-- Impose random perturbation on the horizontal velocity field and then
1453	!-- remove the divergences from the velocity field at the initial stage
1454	IF ( create_disturbances .AND. &
1455	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1456	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1457
1458	CALL disturb_field( nzb_u_inner, tend, u )
1459	CALL disturb_field( nzb_v_inner, tend, v )
1460	n_sor = nsor_ini
1461	!$acc data copy( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner, nzb_v_inner, nzb_w_inner, p, tric, u, v, w, weight_pres, weight_substep, tend )
1462	CALL pres
1463	!$acc end data
1464	n_sor = nsor
1465	ENDIF
1466
1467	!
1468	!-- Initialization of the leaf area density
1469	IF ( plant_canopy ) THEN
1470
1471	SELECT CASE ( TRIM( canopy_mode ) )
1472
1473	CASE( 'block' )
1474
1475	DO i = nxlg, nxrg
1476	DO j = nysg, nyng
1477	lad_s(:,j,i) = lad(:)
1478	cdc(:,j,i) = drag_coefficient
1479	IF ( passive_scalar ) THEN
1480	sls(:,j,i) = leaf_surface_concentration
1481	sec(:,j,i) = scalar_exchange_coefficient
1482	ENDIF
1483	ENDDO
1484	ENDDO
1485
1486	CASE DEFAULT
1487
1488	!
1489	!-- The DEFAULT case is reached either if the parameter
1490	!-- canopy mode contains a wrong character string or if the
1491	!-- user has coded a special case in the user interface.
1492	!-- There, the subroutine user_init_plant_canopy checks
1493	!-- which of these two conditions applies.
1494	CALL user_init_plant_canopy
1495
1496	END SELECT
1497
1498	CALL exchange_horiz( lad_s, nbgp )
1499	CALL exchange_horiz( cdc, nbgp )
1500
1501	IF ( passive_scalar ) THEN
1502	CALL exchange_horiz( sls, nbgp )
1503	CALL exchange_horiz( sec, nbgp )
1504	ENDIF
1505
1506	!
1507	!-- Sharp boundaries of the plant canopy in horizontal directions
1508	!-- In vertical direction the interpolation is retained, as the leaf
1509	!-- area density is initialised by prescribing a vertical profile
1510	!-- consisting of piecewise linear segments. The upper boundary
1511	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1512
1513	DO i = nxl, nxr
1514	DO j = nys, nyn
1515	DO k = nzb, nzt+1
1516	IF ( lad_s(k,j,i) > 0.0 ) THEN
1517	lad_u(k,j,i) = lad_s(k,j,i)
1518	lad_u(k,j,i+1) = lad_s(k,j,i)
1519	lad_v(k,j,i) = lad_s(k,j,i)
1520	lad_v(k,j+1,i) = lad_s(k,j,i)
1521	ENDIF
1522	ENDDO
1523	DO k = nzb, nzt
1524	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1525	ENDDO
1526	ENDDO
1527	ENDDO
1528
1529	lad_w(pch_index,:,:) = 0.0
1530	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1531
1532	CALL exchange_horiz( lad_u, nbgp )
1533	CALL exchange_horiz( lad_v, nbgp )
1534	CALL exchange_horiz( lad_w, nbgp )
1535
1536	!
1537	!-- Initialisation of the canopy heat source distribution
1538	IF ( cthf /= 0.0 ) THEN
1539	!
1540	!-- Piecewise evaluation of the leaf area index by
1541	!-- integration of the leaf area density
1542	lai(:,:,:) = 0.0
1543	DO i = nxlg, nxrg
1544	DO j = nysg, nyng
1545	DO k = pch_index-1, 0, -1
1546	lai(k,j,i) = lai(k+1,j,i) + &
1547	( 0.5 * ( lad_w(k+1,j,i) + &
1548	lad_s(k+1,j,i) ) * &
1549	( zw(k+1) - zu(k+1) ) ) + &
1550	( 0.5 * ( lad_w(k,j,i) + &
1551	lad_s(k+1,j,i) ) * &
1552	( zu(k+1) - zw(k) ) )
1553	ENDDO
1554	ENDDO
1555	ENDDO
1556
1557	!
1558	!-- Evaluation of the upward kinematic vertical heat flux within the
1559	!-- canopy
1560	DO i = nxlg, nxrg
1561	DO j = nysg, nyng
1562	DO k = 0, pch_index
1563	canopy_heat_flux(k,j,i) = cthf * &
1564	exp( -0.6 * lai(k,j,i) )
1565	ENDDO
1566	ENDDO
1567	ENDDO
1568
1569	!
1570	!-- The near surface heat flux is derived from the heat flux
1571	!-- distribution within the canopy
1572	shf(:,:) = canopy_heat_flux(0,:,:)
1573
1574	ENDIF
1575
1576	ENDIF
1577
1578	!
1579	!-- If required, initialize dvrp-software
1580	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
1581
1582	IF ( ocean ) THEN
1583	!
1584	!-- Initialize quantities needed for the ocean model
1585	CALL init_ocean
1586
1587	ELSE
1588	!
1589	!-- Initialize quantities for handling cloud physics
1590	!-- This routine must be called before lpm_init, because
1591	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1592	!-- lpm_init) is not defined.
1593	CALL init_cloud_physics
1594	ENDIF
1595
1596	!
1597	!-- If required, initialize particles
1598	IF ( particle_advection ) CALL lpm_init
1599
1600	!
1601	!-- Initialize the ws-scheme.
1602	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1603
1604	!
1605	!-- Setting weighting factors for calculation of perturbation pressure
1606	!-- and turbulent quantities from the RK substeps
1607	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1608
1609	weight_substep(1) = 1./6.
1610	weight_substep(2) = 3./10.
1611	weight_substep(3) = 8./15.
1612
1613	weight_pres(1) = 1./3.
1614	weight_pres(2) = 5./12.
1615	weight_pres(3) = 1./4.
1616
1617	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1618
1619	weight_substep(1) = 1./2.
1620	weight_substep(2) = 1./2.
1621
1622	weight_pres(1) = 1./2.
1623	weight_pres(2) = 1./2.
1624
1625	ELSE ! for Euler-method
1626
1627	weight_substep(1) = 1.0
1628	weight_pres(1) = 1.0
1629
1630	ENDIF
1631
1632	!
1633	!-- Initialize Rayleigh damping factors
1634	rdf = 0.0
1635	rdf_sc = 0.0
1636	IF ( rayleigh_damping_factor /= 0.0 ) THEN
1637	IF ( .NOT. ocean ) THEN
1638	DO k = nzb+1, nzt
1639	IF ( zu(k) >= rayleigh_damping_height ) THEN
1640	rdf(k) = rayleigh_damping_factor * &
1641	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
1642	/ ( zu(nzt) - rayleigh_damping_height ) )&
1643	)**2
1644	ENDIF
1645	ENDDO
1646	ELSE
1647	DO k = nzt, nzb+1, -1
1648	IF ( zu(k) <= rayleigh_damping_height ) THEN
1649	rdf(k) = rayleigh_damping_factor * &
1650	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
1651	/ ( rayleigh_damping_height - zu(nzb+1)))&
1652	)**2
1653	ENDIF
1654	ENDDO
1655	ENDIF
1656	ENDIF
1657	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1658
1659	!
1660	!-- Initialize the starting level and the vertical smoothing factor used for
1661	!-- the external pressure gradient
1662	dp_smooth_factor = 1.0
1663	IF ( dp_external ) THEN
1664	!
1665	!-- Set the starting level dp_level_ind_b only if it has not been set before
1666	!-- (e.g. in init_grid).
1667	IF ( dp_level_ind_b == 0 ) THEN
1668	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1669	dp_level_ind_b = ind_array(1) - 1 + nzb
1670	! MINLOC uses lower array bound 1
1671	ENDIF
1672	IF ( dp_smooth ) THEN
1673	dp_smooth_factor(:dp_level_ind_b) = 0.0
1674	DO k = dp_level_ind_b+1, nzt
1675	dp_smooth_factor(k) = 0.5 * ( 1.0 + SIN( pi * &
1676	( REAL( k - dp_level_ind_b ) / &
1677	REAL( nzt - dp_level_ind_b ) - 0.5 ) ) )
1678	ENDDO
1679	ENDIF
1680	ENDIF
1681
1682	!
1683	!-- Initialize damping zone for the potential temperature in case of
1684	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1685	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1686	ptdf_x = 0.0
1687	ptdf_y = 0.0
1688	IF ( bc_lr_dirrad .OR. bc_lr_dirneu ) THEN
1689	DO i = nxl, nxr
1690	IF ( ( i * dx ) < pt_damping_width ) THEN
1691	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5 * &
1692	REAL( pt_damping_width - i * dx ) / ( &
1693	REAL( pt_damping_width ) ) ) )**2
1694	ENDIF
1695	ENDDO
1696	ELSEIF ( bc_lr_raddir .OR. bc_lr_neudir ) THEN
1697	DO i = nxl, nxr
1698	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1699	ptdf_x(i) = pt_damping_factor * &
1700	SIN( pi * 0.5 * ( ( i - nx ) * dx + pt_damping_width ) / &
1701	REAL( pt_damping_width ) )**2
1702	ENDIF
1703	ENDDO
1704	ELSEIF ( bc_ns_dirrad .OR. bc_ns_dirneu ) THEN
1705	DO j = nys, nyn
1706	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1707	ptdf_y(j) = pt_damping_factor * &
1708	SIN( pi * 0.5 * ( ( j - ny ) * dy + pt_damping_width ) / &
1709	REAL( pt_damping_width ) )**2
1710	ENDIF
1711	ENDDO
1712	ELSEIF ( bc_ns_raddir .OR. bc_ns_neudir ) THEN
1713	DO j = nys, nyn
1714	IF ( ( j * dy ) < pt_damping_width ) THEN
1715	ptdf_y(j) = pt_damping_factor * &
1716	SIN( pi * 0.5 * ( pt_damping_width - j * dy ) / &
1717	REAL( pt_damping_width ) )**2
1718	ENDIF
1719	ENDDO
1720	ENDIF
1721
1722	!
1723	!-- Initialize local summation arrays for routine flow_statistics.
1724	!-- This is necessary because they may not yet have been initialized when they
1725	!-- are called from flow_statistics (or - depending on the chosen model run -
1726	!-- are never initialized)
1727	sums_divnew_l = 0.0
1728	sums_divold_l = 0.0
1729	sums_l_l = 0.0
1730	sums_up_fraction_l = 0.0
1731	sums_wsts_bc_l = 0.0
1732
1733	!
1734	!-- Pre-set masks for regional statistics. Default is the total model domain.
1735	!-- Ghost points are excluded because counting values at the ghost boundaries
1736	!-- would bias the statistics
1737	rmask = 1.0
1738	rmask(:,nxlg:nxl-1,:) = 0.0; rmask(:,nxr+1:nxrg,:) = 0.0
1739	rmask(nysg:nys-1,:,:) = 0.0; rmask(nyn+1:nyng,:,:) = 0.0
1740
1741	!
1742	!-- User-defined initializing actions. Check afterwards, if maximum number
1743	!-- of allowed timeseries is exceeded
1744	CALL user_init
1745
1746	IF ( dots_num > dots_max ) THEN
1747	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1748	' its maximum of dots_max = ', dots_max, &
1749	' &Please increase dots_max in modules.f90.'
1750	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1751	ENDIF
1752
1753	!
1754	!-- Input binary data file is not needed anymore. This line must be placed
1755	!-- after call of user_init!
1756	CALL close_file( 13 )
1757
1758	!
1759	!-- Compute total sum of active mask grid points
1760	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1761	!-- total domain
1762	!-- ngp_3d: number of grid points of the total domain
1763	ngp_2dh_outer_l = 0
1764	ngp_2dh_outer = 0
1765	ngp_2dh_s_inner_l = 0
1766	ngp_2dh_s_inner = 0
1767	ngp_2dh_l = 0
1768	ngp_2dh = 0
1769	ngp_3d_inner_l = 0.0
1770	ngp_3d_inner = 0
1771	ngp_3d = 0
1772	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1773
1774	DO sr = 0, statistic_regions
1775	DO i = nxl, nxr
1776	DO j = nys, nyn
1777	IF ( rmask(j,i,sr) == 1.0 ) THEN
1778	!
1779	!-- All xy-grid points
1780	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1781	!
1782	!-- xy-grid points above topography
1783	DO k = nzb_s_outer(j,i), nz + 1
1784	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1785	ENDDO
1786	DO k = nzb_s_inner(j,i), nz + 1
1787	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1788	ENDDO
1789	!
1790	!-- All grid points of the total domain above topography
1791	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1792	( nz - nzb_s_inner(j,i) + 2 )
1793	ENDIF
1794	ENDDO
1795	ENDDO
1796	ENDDO
1797
1798	sr = statistic_regions + 1
1799	#if defined( __parallel )
1800	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1801	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1802	comm2d, ierr )
1803	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1804	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1805	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1806	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1807	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1808	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1809	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1810	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1811	MPI_SUM, comm2d, ierr )
1812	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1813	#else
1814	ngp_2dh = ngp_2dh_l
1815	ngp_2dh_outer = ngp_2dh_outer_l
1816	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1817	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1818	#endif
1819
1820	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1821	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1822
1823	!
1824	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1825	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1826	!-- the respective subdomain lie below the surface topography
1827	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1828	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1829	ngp_3d_inner(:) )
1830	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1831
1832	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1833
1834
1835	END SUBROUTINE init_3d_model

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