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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1206

Last change on this file since 1206 was 1196, checked in by heinze, 11 years ago
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1	#if defined( __ibmy_special )
2	@PROCESS NOOPTimize
3	#endif
4	SUBROUTINE init_3d_model
5
6	!--------------------------------------------------------------------------------!
7	! This file is part of PALM.
8	!
9	! PALM is free software: you can redistribute it and/or modify it under the terms
10	! of the GNU General Public License as published by the Free Software Foundation,
11	! either version 3 of the License, or (at your option) any later version.
12	!
13	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
14	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
15	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
16	!
17	! You should have received a copy of the GNU General Public License along with
18	! PALM. If not, see <http://www.gnu.org/licenses/>.
19	!
20	! Copyright 1997-2012 Leibniz University Hannover
21	!--------------------------------------------------------------------------------!
22	!
23	! Current revisions:
24	! ------------------
25	!
26	!
27	! Former revisions:
28	! -----------------
29	! $Id: init_3d_model.f90 1196 2013-07-01 12:31:31Z witha $
30	!
31	! 1195 2013-07-01 12:27:57Z heinze
32	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
33	!
34	! 1179 2013-06-14 05:57:58Z raasch
35	! allocate and set ref_state to be used in buoyancy terms
36	!
37	! 1171 2013-05-30 11:27:45Z raasch
38	! diss array is allocated with full size if accelerator boards are used
39	!
40	! 1159 2013-05-21 11:58:22Z fricke
41	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
42	!
43	! 1153 2013-05-10 14:33:08Z raasch
44	! diss array is allocated with dummy elements even if it is not needed
45	! (required by PGI 13.4 / CUDA 5.0)
46	!
47	! 1115 2013-03-26 18:16:16Z hoffmann
48	! unused variables removed
49	!
50	! 1113 2013-03-10 02:48:14Z raasch
51	! openACC directive modified
52	!
53	! 1111 2013-03-08 23:54:10Z raasch
54	! openACC directives added for pres
55	! array diss allocated only if required
56	!
57	! 1092 2013-02-02 11:24:22Z raasch
58	! unused variables removed
59	!
60	! 1065 2012-11-22 17:42:36Z hoffmann
61	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
62	!
63	! 1053 2012-11-13 17:11:03Z hoffmann
64	! allocation and initialisation of necessary data arrays for the two-moment
65	! cloud physics scheme the two new prognostic equations (nr, qr):
66	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
67	! +tend_*, prr
68	!
69	! 1036 2012-10-22 13:43:42Z raasch
70	! code put under GPL (PALM 3.9)
71	!
72	! 1032 2012-10-21 13:03:21Z letzel
73	! save memory by not allocating pt_2 in case of neutral = .T.
74	!
75	! 1025 2012-10-07 16:04:41Z letzel
76	! bugfix: swap indices of mask for ghost boundaries
77	!
78	! 1015 2012-09-27 09:23:24Z raasch
79	! mask is set to zero for ghost boundaries
80	!
81	! 1010 2012-09-20 07:59:54Z raasch
82	! cpp switch __nopointer added for pointer free version
83	!
84	! 1003 2012-09-14 14:35:53Z raasch
85	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
86	!
87	! 1001 2012-09-13 14:08:46Z raasch
88	! all actions concerning leapfrog scheme removed
89	!
90	! 996 2012-09-07 10:41:47Z raasch
91	! little reformatting
92	!
93	! 978 2012-08-09 08:28:32Z fricke
94	! outflow damping layer removed
95	! roughness length for scalar quantites z0h added
96	! damping zone for the potential temperatur in case of non-cyclic lateral
97	! boundaries added
98	! initialization of ptdf_x, ptdf_y
99	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
100	!
101	! 849 2012-03-15 10:35:09Z raasch
102	! init_particles renamed lpm_init
103	!
104	! 825 2012-02-19 03:03:44Z raasch
105	! wang_collision_kernel renamed wang_kernel
106	!
107	! 790 2011-11-29 03:11:20Z raasch
108	! diss is also allocated in case that the Wang kernel is used
109	!
110	! 787 2011-11-28 12:49:05Z heinze $
111	! bugfix: call init_advec in every case - not only for inital runs
112	!
113	! 785 2011-11-28 09:47:19Z raasch
114	! initialization of rdf_sc
115	!
116	! 767 2011-10-14 06:39:12Z raasch
117	! adjustments concerning implementation of prescribed u,v-profiles
118	! bugfix: dirichlet_0 conditions for ug/vg moved to check_parameters
119	!
120	! 759 2011-09-15 13:58:31Z raasch
121	! Splitting of parallel I/O in blocks of PEs
122	! Bugfix: No zero assignments to volume_flow_initial and volume_flow_area in
123	! case of normal restart runs.
124	!
125	! 713 2011-03-30 14:21:21Z suehring
126	! weight_substep and weight_pres are given as fractions.
127	!
128	! 709 2011-03-30 09:31:40Z raasch
129	! formatting adjustments
130	!
131	! 707 2011-03-29 11:39:40Z raasch
132	! p_sub renamed p_loc and allocated depending on the chosen pressure solver,
133	! initial assignments of zero to array p for iterative solvers only,
134	! bc_lr/ns replaced by bc_lr/ns_dirrad/raddir
135	!
136	! 680 2011-02-04 23:16:06Z gryschka
137	! bugfix: volume_flow_control
138	!
139	! 673 2011-01-18 16:19:48Z suehring
140	! weight_substep (moved from advec_ws) and weight_pres added.
141	! Allocate p_sub when using Multigrid or SOR solver.
142	! Call of ws_init moved behind the if requests.
143	!
144	! 667 2010-12-23 12:06:00Z suehring/gryschka
145	! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng in loops and
146	! allocation of arrays. Calls of exchange_horiz are modified.
147	! Call ws_init to initialize arrays needed for calculating statisticas and for
148	! optimization when ws-scheme is used.
149	! Initial volume flow is now calculated by using the variable hom_sum.
150	! Therefore the correction of initial volume flow for non-flat topography
151	! removed (removed u_nzb_p1_for_vfc and v_nzb_p1_for_vfc)
152	! Changed surface boundary conditions for u and v in case of ibc_uv_b == 0 from
153	! mirror to Dirichlet boundary conditions (u=v=0), so that k=nzb is
154	! representative for the height z0.
155	! Bugfix: type conversion of '1' to 64bit for the MAX function (ngp_3d_inner)
156	!
157	! 622 2010-12-10 08:08:13Z raasch
158	! optional barriers included in order to speed up collective operations
159	!
160	! 560 2010-09-09 10:06:09Z weinreis
161	! bugfix: correction of calculating ngp_3d for 64 bit
162	!
163	! 485 2010-02-05 10:57:51Z raasch
164	! calculation of ngp_3d + ngp_3d_inner changed because they have now 64 bit
165	!
166	! 407 2009-12-01 15:01:15Z maronga
167	! var_ts is replaced by dots_max
168	! Enabled passive scalar/humidity wall fluxes for non-flat topography
169	!
170	! 388 2009-09-23 09:40:33Z raasch
171	! Initialization of prho added.
172	! bugfix: correction of initial volume flow for non-flat topography
173	! bugfix: zero initialization of arrays within buildings for 'cyclic_fill'
174	! bugfix: avoid that ngp_2dh_s_inner becomes zero
175	! initializing_actions='read_data_for_recycling' renamed to 'cyclic_fill', now
176	! independent of turbulent_inflow
177	! Output of messages replaced by message handling routine.
178	! Set the starting level and the vertical smoothing factor used for
179	! the external pressure gradient
180	! +conserve_volume_flow_mode: 'default', 'initial_profiles', 'inflow_profile'
181	! and 'bulk_velocity'
182	! If the inversion height calculated by the prerun is zero,
183	! inflow_damping_height must be explicitly specified.
184	!
185	! 181 2008-07-30 07:07:47Z raasch
186	! bugfix: zero assignments to tendency arrays in case of restarts,
187	! further extensions and modifications in the initialisation of the plant
188	! canopy model,
189	! allocation of hom_sum moved to parin, initialization of spectrum_x\|y directly
190	! after allocating theses arrays,
191	! read data for recycling added as new initialization option,
192	! dummy allocation for diss
193	!
194	! 138 2007-11-28 10:03:58Z letzel
195	! New counter ngp_2dh_s_inner.
196	! Allow new case bc_uv_t = 'dirichlet_0' for channel flow.
197	! Corrected calculation of initial volume flow for 'set_1d-model_profiles' and
198	! 'set_constant_profiles' in case of buildings in the reference cross-sections.
199	!
200	! 108 2007-08-24 15:10:38Z letzel
201	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
202	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
203	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
204	! Rayleigh damping for ocean, optionally calculate km and kh from initial
205	! TKE e_init
206	!
207	! 97 2007-06-21 08:23:15Z raasch
208	! Initialization of salinity, call of init_ocean
209	!
210	! 87 2007-05-22 15:46:47Z raasch
211	! var_hom and var_sum renamed pr_palm
212	!
213	! 75 2007-03-22 09:54:05Z raasch
214	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
215	! bugfix for cases with the outflow damping layer extending over more than one
216	! subdomain, moisture renamed humidity,
217	! new initializing action "by_user" calls user_init_3d_model,
218	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
219	! initial velocities at nzb+1 are regarded for volume
220	! flow control in case they have been set zero before (to avoid small timesteps)
221	! -uvmean_outflow, uxrp, vynp eliminated
222	!
223	! 19 2007-02-23 04:53:48Z raasch
224	! +handling of top fluxes
225	!
226	! RCS Log replace by Id keyword, revision history cleaned up
227	!
228	! Revision 1.49 2006/08/22 15:59:07 raasch
229	! No optimization of this file on the ibmy (Yonsei Univ.)
230	!
231	! Revision 1.1 1998/03/09 16:22:22 raasch
232	! Initial revision
233	!
234	!
235	! Description:
236	! ------------
237	! Allocation of arrays and initialization of the 3D model via
238	! a) pre-run the 1D model
239	! or
240	! b) pre-set constant linear profiles
241	! or
242	! c) read values of a previous run
243	!------------------------------------------------------------------------------!
244
245	USE advec_ws
246	USE arrays_3d
247	USE averaging
248	USE cloud_parameters
249	USE constants
250	USE control_parameters
251	USE cpulog
252	USE grid_variables
253	USE indices
254	USE interfaces
255	USE model_1d
256	USE netcdf_control
257	USE particle_attributes
258	USE pegrid
259	USE profil_parameter
260	USE random_function_mod
261	USE statistics
262	USE transpose_indices
263
264	IMPLICIT NONE
265
266	INTEGER :: i, ind_array(1), j, k, sr
267
268	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l
269
270	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l, &
271	ngp_2dh_s_inner_l
272
273	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
274
275	REAL, DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l, ngp_3d_inner_tmp
276
277
278	!
279	!-- Allocate arrays
280	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
281	ngp_3d(0:statistic_regions), &
282	ngp_3d_inner(0:statistic_regions), &
283	ngp_3d_inner_l(0:statistic_regions), &
284	ngp_3d_inner_tmp(0:statistic_regions), &
285	sums_divnew_l(0:statistic_regions), &
286	sums_divold_l(0:statistic_regions) )
287	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
288	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
289	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
290	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
291	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
292	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
293	sums(nzb:nzt+1,pr_palm+max_pr_user), &
294	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
295	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
296	sums_up_fraction_l(10,3,0:statistic_regions), &
297	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
298	ts_value(dots_max,0:statistic_regions) )
299	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
300
301	ALLOCATE( rif(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
302	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
303	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
304	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
305	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
306	z0h(nysg:nyng,nxlg:nxrg) )
307
308	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
309	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
310	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
311	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
312	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
313
314	#if defined( __nopointer )
315	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
316	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
317	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
318	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
319	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
320	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
321	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
322	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
323	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
324	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
325	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
326	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
327	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
328	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
329	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
330	#else
331	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
332	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
333	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
334	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
335	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
336	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
337	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
338	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
339	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
340	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
341	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
342	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
343	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
344	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
345	IF ( .NOT. neutral ) THEN
346	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
347	ENDIF
348	#endif
349
350	!
351	!-- Following array is required for perturbation pressure within the iterative
352	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
353	!-- the weighted average of the substeps and cannot be used in the Poisson
354	!-- solver.
355	IF ( psolver == 'sor' ) THEN
356	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
357	ELSEIF ( psolver == 'multigrid' ) THEN
358	!
359	!-- For performance reasons, multigrid is using one ghost layer only
360	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
361	ENDIF
362
363	!
364	!-- Array for storing constant coeffficients of the tridiagonal solver
365	IF ( psolver == 'poisfft' ) THEN
366	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
367	ENDIF
368
369	IF ( humidity .OR. passive_scalar ) THEN
370	!
371	!-- 2D-humidity/scalar arrays
372	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
373	qsws(nysg:nyng,nxlg:nxrg), &
374	qswst(nysg:nyng,nxlg:nxrg) )
375
376	!
377	!-- 3D-humidity/scalar arrays
378	#if defined( __nopointer )
379	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
380	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
381	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
382	#else
383	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
384	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
385	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
386	#endif
387
388	!
389	!-- 3D-arrays needed for humidity only
390	IF ( humidity ) THEN
391	#if defined( __nopointer )
392	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
393	#else
394	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
395	#endif
396
397	IF ( cloud_physics ) THEN
398
399	!
400	!-- Liquid water content
401	#if defined( __nopointer )
402	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
403	#else
404	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
405	#endif
406	!
407	!-- Precipitation amount and rate (only needed if output is switched)
408	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
409	precipitation_rate(nysg:nyng,nxlg:nxrg) )
410
411	IF ( icloud_scheme == 0 ) THEN
412	!
413	!-- 1D-arrays
414	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
415	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
416	!
417	!-- 3D-cloud water content
418	#if defined( __nopointer )
419	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
420	#else
421	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
422	#endif
423	!
424	!-- 3D-tendency arrays
425	ALLOCATE( tend_pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
426	tend_q(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
427
428	IF ( precipitation ) THEN
429	!
430	!-- 1D-arrays
431	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
432	!
433	!
434	!-- 3D-tendency arrays
435	ALLOCATE( tend_nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
436	tend_qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
437	!
438	!-- 2D-rain water content and rain drop concentration arrays
439	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
440	qrsws(nysg:nyng,nxlg:nxrg), &
441	qrswst(nysg:nyng,nxlg:nxrg), &
442	nrs(nysg:nyng,nxlg:nxrg), &
443	nrsws(nysg:nyng,nxlg:nxrg), &
444	nrswst(nysg:nyng,nxlg:nxrg) )
445	!
446	!-- 3D-rain water content, rain drop concentration arrays
447	#if defined( __nopointer )
448	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
449	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
450	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
451	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
452	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
453	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
454	#else
455	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
456	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
457	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
458	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
459	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
460	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
461	#endif
462	!
463	!-- 3d-precipitation rate
464	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
465	ENDIF
466
467	ENDIF
468	ENDIF
469
470	IF ( cloud_droplets ) THEN
471	!
472	!-- Liquid water content, change in liquid water content
473	#if defined( __nopointer )
474	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
475	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
476	#else
477	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
478	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
479	#endif
480	!
481	!-- Real volume of particles (with weighting), volume of particles
482	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
483	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
484	ENDIF
485
486	ENDIF
487
488	ENDIF
489
490	IF ( ocean ) THEN
491	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
492	saswst(nysg:nyng,nxlg:nxrg) )
493	#if defined( __nopointer )
494	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
495	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
496	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
497	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
498	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
499	#else
500	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
501	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
502	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
503	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
504	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
505	prho => prho_1
506	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
507	! density to be apointer
508	#endif
509	IF ( humidity_remote ) THEN
510	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
511	qswst_remote = 0.0
512	ENDIF
513	ENDIF
514
515	!
516	!-- 3D-array for storing the dissipation, needed for calculating the sgs
517	!-- particle velocities
518	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence .OR. &
519	num_acc_per_node > 0 ) THEN
520	print, '** allocating diss'
521	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
522	ENDIF
523
524	IF ( dt_dosp /= 9999999.9 ) THEN
525	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
526	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
527	spectrum_x = 0.0
528	spectrum_y = 0.0
529	ENDIF
530
531	!
532	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
533	IF ( plant_canopy ) THEN
534	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
535	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
536	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
537	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
538	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
539
540	IF ( passive_scalar ) THEN
541	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
542	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
543	ENDIF
544
545	IF ( cthf /= 0.0 ) THEN
546	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
547	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
548	ENDIF
549
550	ENDIF
551
552	!
553	!-- 4D-array for storing the Rif-values at vertical walls
554	IF ( topography /= 'flat' ) THEN
555	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
556	rif_wall = 0.0
557	ENDIF
558
559	!
560	!-- Arrays to store velocity data from t-dt and the phase speeds which
561	!-- are needed for radiation boundary conditions
562	IF ( outflow_l ) THEN
563	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
564	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
565	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
566	ENDIF
567	IF ( outflow_r ) THEN
568	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
569	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
570	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
571	ENDIF
572	IF ( outflow_l .OR. outflow_r ) THEN
573	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
574	c_w(nzb:nzt+1,nysg:nyng) )
575	ENDIF
576	IF ( outflow_s ) THEN
577	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
578	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
579	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
580	ENDIF
581	IF ( outflow_n ) THEN
582	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
583	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
584	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
585	ENDIF
586	IF ( outflow_s .OR. outflow_n ) THEN
587	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
588	c_w(nzb:nzt+1,nxlg:nxrg) )
589	ENDIF
590	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
591	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
592	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
593	ENDIF
594
595
596	#if ! defined( __nopointer )
597	!
598	!-- Initial assignment of the pointers
599	e => e_1; e_p => e_2; te_m => e_3
600	IF ( .NOT. neutral ) THEN
601	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
602	ELSE
603	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
604	ENDIF
605	u => u_1; u_p => u_2; tu_m => u_3
606	v => v_1; v_p => v_2; tv_m => v_3
607	w => w_1; w_p => w_2; tw_m => w_3
608
609	IF ( humidity .OR. passive_scalar ) THEN
610	q => q_1; q_p => q_2; tq_m => q_3
611	IF ( humidity ) THEN
612	vpt => vpt_1
613	IF ( cloud_physics ) THEN
614	ql => ql_1
615	IF ( icloud_scheme == 0 ) THEN
616	qc => qc_1
617	IF ( precipitation ) THEN
618	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
619	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
620	ENDIF
621	ENDIF
622	ENDIF
623	ENDIF
624	IF ( cloud_droplets ) THEN
625	ql => ql_1
626	ql_c => ql_2
627	ENDIF
628	ENDIF
629
630	IF ( ocean ) THEN
631	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
632	ENDIF
633	#endif
634
635	!
636	!-- Allocate arrays containing the RK coefficient for calculation of
637	!-- perturbation pressure and turbulent fluxes. At this point values are
638	!-- set for pressure calculation during initialization (where no timestep
639	!-- is done). Further below the values needed within the timestep scheme
640	!-- will be set.
641	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
642	weight_pres(1:intermediate_timestep_count_max) )
643	weight_substep = 1.0
644	weight_pres = 1.0
645	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
646
647	!
648	!-- Initialize model variables
649	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
650	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
651	!
652	!-- First model run of a possible job queue.
653	!-- Initial profiles of the variables must be computes.
654	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
655	!
656	!-- Use solutions of the 1D model as initial profiles,
657	!-- start 1D model
658	CALL init_1d_model
659	!
660	!-- Transfer initial profiles to the arrays of the 3D model
661	DO i = nxlg, nxrg
662	DO j = nysg, nyng
663	e(:,j,i) = e1d
664	kh(:,j,i) = kh1d
665	km(:,j,i) = km1d
666	pt(:,j,i) = pt_init
667	u(:,j,i) = u1d
668	v(:,j,i) = v1d
669	ENDDO
670	ENDDO
671
672	IF ( humidity .OR. passive_scalar ) THEN
673	DO i = nxlg, nxrg
674	DO j = nysg, nyng
675	q(:,j,i) = q_init
676	ENDDO
677	ENDDO
678	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
679	precipitation ) THEN
680	DO i = nxlg, nxrg
681	DO j = nysg, nyng
682	qr(:,j,i) = 0.0
683	nr(:,j,i) = 0.0
684	ENDDO
685	ENDDO
686	!
687	!-- Initialze nc_1d with default value
688	nc_1d(:) = nc_const
689
690	ENDIF
691	ENDIF
692
693	IF ( .NOT. constant_diffusion ) THEN
694	DO i = nxlg, nxrg
695	DO j = nysg, nyng
696	e(:,j,i) = e1d
697	ENDDO
698	ENDDO
699	!
700	!-- Store initial profiles for output purposes etc.
701	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
702
703	IF ( prandtl_layer ) THEN
704	rif = rif1d(nzb+1)
705	ts = 0.0 ! could actually be computed more accurately in the
706	! 1D model. Update when opportunity arises.
707	us = us1d
708	usws = usws1d
709	vsws = vsws1d
710	ELSE
711	ts = 0.0 ! must be set, because used in
712	rif = 0.0 ! flowste
713	us = 0.0
714	usws = 0.0
715	vsws = 0.0
716	ENDIF
717
718	ELSE
719	e = 0.0 ! must be set, because used in
720	rif = 0.0 ! flowste
721	ts = 0.0
722	us = 0.0
723	usws = 0.0
724	vsws = 0.0
725	ENDIF
726	uswst = top_momentumflux_u
727	vswst = top_momentumflux_v
728
729	!
730	!-- In every case qs = 0.0 (see also pt)
731	!-- This could actually be computed more accurately in the 1D model.
732	!-- Update when opportunity arises!
733	IF ( humidity .OR. passive_scalar ) THEN
734	qs = 0.0
735	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
736	precipitation ) THEN
737	qrs = 0.0
738	nrs = 0.0
739	ENDIF
740	ENDIF
741
742	!
743	!-- inside buildings set velocities back to zero
744	IF ( topography /= 'flat' ) THEN
745	DO i = nxl-1, nxr+1
746	DO j = nys-1, nyn+1
747	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
748	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
749	ENDDO
750	ENDDO
751
752	!
753	!-- WARNING: The extra boundary conditions set after running the
754	!-- ------- 1D model impose an error on the divergence one layer
755	!-- below the topography; need to correct later
756	!-- ATTENTION: Provisional correction for Piacsek & Williams
757	!-- --------- advection scheme: keep u and v zero one layer below
758	!-- the topography.
759	IF ( ibc_uv_b == 1 ) THEN
760	!
761	!-- Neumann condition
762	DO i = nxl-1, nxr+1
763	DO j = nys-1, nyn+1
764	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
765	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
766	ENDDO
767	ENDDO
768
769	ENDIF
770
771	ENDIF
772
773	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
774	THEN
775	!
776	!-- Use constructed initial profiles (velocity constant with height,
777	!-- temperature profile with constant gradient)
778	DO i = nxlg, nxrg
779	DO j = nysg, nyng
780	pt(:,j,i) = pt_init
781	u(:,j,i) = u_init
782	v(:,j,i) = v_init
783	ENDDO
784	ENDDO
785
786	!
787	!-- Set initial horizontal velocities at the lowest computational grid
788	!-- levels to zero in order to avoid too small time steps caused by the
789	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
790	!-- in the limiting formula!). The original values are stored to be later
791	!-- used for volume flow control.
792	DO i = nxlg, nxrg
793	DO j = nysg, nyng
794	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
795	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
796	ENDDO
797	ENDDO
798
799	IF ( humidity .OR. passive_scalar ) THEN
800	DO i = nxlg, nxrg
801	DO j = nysg, nyng
802	q(:,j,i) = q_init
803	ENDDO
804	ENDDO
805	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
806	!
807	!-- Initialze nc_1d with default value
808	nc_1d(:) = nc_const
809
810	IF ( precipitation ) THEN
811	DO i = nxlg, nxrg
812	DO j = nysg, nyng
813	qr(:,j,i) = 0.0
814	nr(:,j,i) = 0.0
815	ENDDO
816	ENDDO
817	ENDIF
818
819	ENDIF
820	ENDIF
821
822	IF ( ocean ) THEN
823	DO i = nxlg, nxrg
824	DO j = nysg, nyng
825	sa(:,j,i) = sa_init
826	ENDDO
827	ENDDO
828	ENDIF
829
830	IF ( constant_diffusion ) THEN
831	km = km_constant
832	kh = km / prandtl_number
833	e = 0.0
834	ELSEIF ( e_init > 0.0 ) THEN
835	DO k = nzb+1, nzt
836	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
837	ENDDO
838	km(nzb,:,:) = km(nzb+1,:,:)
839	km(nzt+1,:,:) = km(nzt,:,:)
840	kh = km / prandtl_number
841	e = e_init
842	ELSE
843	IF ( .NOT. ocean ) THEN
844	kh = 0.01 ! there must exist an initial diffusion, because
845	km = 0.01 ! otherwise no TKE would be produced by the
846	! production terms, as long as not yet
847	! e = (u/cm)*2 at k=nzb+1
848	ELSE
849	kh = 0.00001
850	km = 0.00001
851	ENDIF
852	e = 0.0
853	ENDIF
854	rif = 0.0
855	ts = 0.0
856	us = 0.0
857	usws = 0.0
858	uswst = top_momentumflux_u
859	vsws = 0.0
860	vswst = top_momentumflux_v
861	IF ( humidity .OR. passive_scalar ) qs = 0.0
862
863	!
864	!-- Compute initial temperature field and other constants used in case
865	!-- of a sloping surface
866	IF ( sloping_surface ) CALL init_slope
867
868	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
869	THEN
870	!
871	!-- Initialization will completely be done by the user
872	CALL user_init_3d_model
873
874	ENDIF
875	!
876	!-- Bottom boundary
877	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
878	u(nzb,:,:) = 0.0
879	v(nzb,:,:) = 0.0
880	ENDIF
881
882	!
883	!-- Apply channel flow boundary condition
884	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
885	u(nzt+1,:,:) = 0.0
886	v(nzt+1,:,:) = 0.0
887	ENDIF
888
889	!
890	!-- Calculate virtual potential temperature
891	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
892
893	!
894	!-- Store initial profiles for output purposes etc.
895	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
896	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
897	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
898	hom(nzb,1,5,:) = 0.0
899	hom(nzb,1,6,:) = 0.0
900	ENDIF
901	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
902	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
903	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
904
905	IF ( ocean ) THEN
906	!
907	!-- Store initial salinity profile
908	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
909	ENDIF
910
911	IF ( humidity ) THEN
912	!
913	!-- Store initial profile of total water content, virtual potential
914	!-- temperature
915	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
916	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
917	IF ( cloud_physics .OR. cloud_droplets ) THEN
918	!
919	!-- Store initial profile of specific humidity and potential
920	!-- temperature
921	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
922	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
923	ENDIF
924	ENDIF
925
926	IF ( passive_scalar ) THEN
927	!
928	!-- Store initial scalar profile
929	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
930	ENDIF
931
932	!
933	!-- Initialize fluxes at bottom surface
934	IF ( use_surface_fluxes ) THEN
935
936	IF ( constant_heatflux ) THEN
937	!
938	!-- Heat flux is prescribed
939	IF ( random_heatflux ) THEN
940	CALL disturb_heatflux
941	ELSE
942	shf = surface_heatflux
943	!
944	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
945	IF ( TRIM( topography ) /= 'flat' ) THEN
946	DO i = nxlg, nxrg
947	DO j = nysg, nyng
948	IF ( nzb_s_inner(j,i) /= 0 ) THEN
949	shf(j,i) = wall_heatflux(0)
950	ENDIF
951	ENDDO
952	ENDDO
953	ENDIF
954	ENDIF
955	ENDIF
956
957	!
958	!-- Determine the near-surface water flux
959	IF ( humidity .OR. passive_scalar ) THEN
960	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
961	precipitation ) THEN
962	qrsws = 0.0
963	nrsws = 0.0
964	ENDIF
965	IF ( constant_waterflux ) THEN
966	qsws = surface_waterflux
967	!
968	!-- Over topography surface_waterflux is replaced by
969	!-- wall_humidityflux(0)
970	IF ( TRIM( topography ) /= 'flat' ) THEN
971	wall_qflux = wall_humidityflux
972	DO i = nxlg, nxrg
973	DO j = nysg, nyng
974	IF ( nzb_s_inner(j,i) /= 0 ) THEN
975	qsws(j,i) = wall_qflux(0)
976	ENDIF
977	ENDDO
978	ENDDO
979	ENDIF
980	ENDIF
981	ENDIF
982
983	ENDIF
984
985	!
986	!-- Initialize fluxes at top surface
987	!-- Currently, only the heatflux and salinity flux can be prescribed.
988	!-- The latent flux is zero in this case!
989	IF ( use_top_fluxes ) THEN
990
991	IF ( constant_top_heatflux ) THEN
992	!
993	!-- Heat flux is prescribed
994	tswst = top_heatflux
995
996	IF ( humidity .OR. passive_scalar ) THEN
997	qswst = 0.0
998	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
999	precipitation ) THEN
1000	nrswst = 0.0
1001	qrswst = 0.0
1002	ENDIF
1003	ENDIF
1004
1005	IF ( ocean ) THEN
1006	saswsb = bottom_salinityflux
1007	saswst = top_salinityflux
1008	ENDIF
1009	ENDIF
1010
1011	!
1012	!-- Initialization in case of a coupled model run
1013	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1014	tswst = 0.0
1015	ENDIF
1016
1017	ENDIF
1018
1019	!
1020	!-- Initialize Prandtl layer quantities
1021	IF ( prandtl_layer ) THEN
1022
1023	z0 = roughness_length
1024	z0h = z0h_factor * z0
1025
1026	IF ( .NOT. constant_heatflux ) THEN
1027	!
1028	!-- Surface temperature is prescribed. Here the heat flux cannot be
1029	!-- simply estimated, because therefore rif, u* and theta* would have
1030	!-- to be computed by iteration. This is why the heat flux is assumed
1031	!-- to be zero before the first time step. It approaches its correct
1032	!-- value in the course of the first few time steps.
1033	shf = 0.0
1034	ENDIF
1035
1036	IF ( humidity .OR. passive_scalar ) THEN
1037	IF ( .NOT. constant_waterflux ) qsws = 0.0
1038	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1039	precipitation ) THEN
1040	qrsws = 0.0
1041	nrsws = 0.0
1042	ENDIF
1043	ENDIF
1044
1045	ENDIF
1046
1047	!
1048	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1049	!-- the reference state will be set (overwritten) in init_ocean)
1050	IF ( use_single_reference_value ) THEN
1051	IF ( .NOT. humidity ) THEN
1052	ref_state(:) = pt_reference
1053	ELSE
1054	ref_state(:) = vpt_reference
1055	ENDIF
1056	ELSE
1057	IF ( .NOT. humidity ) THEN
1058	ref_state(:) = pt_init(:)
1059	ELSE
1060	ref_state(:) = vpt(:,nys,nxl)
1061	ENDIF
1062	ENDIF
1063
1064	!
1065	!-- For the moment, vertical velocity is zero
1066	w = 0.0
1067
1068	!
1069	!-- Initialize array sums (must be defined in first call of pres)
1070	sums = 0.0
1071
1072	!
1073	!-- In case of iterative solvers, p must get an initial value
1074	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0
1075
1076	!
1077	!-- Treating cloud physics, liquid water content and precipitation amount
1078	!-- are zero at beginning of the simulation
1079	IF ( cloud_physics ) THEN
1080	ql = 0.0
1081	IF ( precipitation ) precipitation_amount = 0.0
1082	IF ( icloud_scheme == 0 ) THEN
1083	qc = 0.0
1084	nc_1d = nc_const
1085	ENDIF
1086	ENDIF
1087	!
1088	!-- Impose vortex with vertical axis on the initial velocity profile
1089	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1090	CALL init_rankine
1091	ENDIF
1092
1093	!
1094	!-- Impose temperature anomaly (advection test only)
1095	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1096	CALL init_pt_anomaly
1097	ENDIF
1098
1099	!
1100	!-- If required, change the surface temperature at the start of the 3D run
1101	IF ( pt_surface_initial_change /= 0.0 ) THEN
1102	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1103	ENDIF
1104
1105	!
1106	!-- If required, change the surface humidity/scalar at the start of the 3D
1107	!-- run
1108	IF ( ( humidity .OR. passive_scalar ) .AND. &
1109	q_surface_initial_change /= 0.0 ) THEN
1110	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1111	ENDIF
1112	!
1113	!-- Initialize the random number generator (from numerical recipes)
1114	CALL random_function_ini
1115
1116	!
1117	!-- Initialize old and new time levels.
1118	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1119	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1120
1121	IF ( humidity .OR. passive_scalar ) THEN
1122	tq_m = 0.0
1123	q_p = q
1124	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1125	precipitation ) THEN
1126	tqr_m = 0.0
1127	qr_p = qr
1128	tnr_m = 0.0
1129	nr_p = nr
1130	ENDIF
1131	ENDIF
1132
1133	IF ( ocean ) THEN
1134	tsa_m = 0.0
1135	sa_p = sa
1136	ENDIF
1137
1138
1139	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1140	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1141	THEN
1142	!
1143	!-- When reading data for cyclic fill of 3D prerun data files, read
1144	!-- some of the global variables from the restart file which are required
1145	!-- for initializing the inflow
1146	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1147
1148	DO i = 0, io_blocks-1
1149	IF ( i == io_group ) THEN
1150	CALL read_parts_of_var_list
1151	CALL close_file( 13 )
1152	ENDIF
1153	#if defined( __parallel )
1154	CALL MPI_BARRIER( comm2d, ierr )
1155	#endif
1156	ENDDO
1157
1158	ENDIF
1159
1160	!
1161	!-- Read binary data from restart file
1162	DO i = 0, io_blocks-1
1163	IF ( i == io_group ) THEN
1164	CALL read_3d_binary
1165	ENDIF
1166	#if defined( __parallel )
1167	CALL MPI_BARRIER( comm2d, ierr )
1168	#endif
1169	ENDDO
1170
1171	!
1172	!-- Initialization of the turbulence recycling method
1173	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1174	turbulent_inflow ) THEN
1175	!
1176	!-- First store the profiles to be used at the inflow.
1177	!-- These profiles are the (temporally) and horizontally averaged vertical
1178	!-- profiles from the prerun. Alternatively, prescribed profiles
1179	!-- for u,v-components can be used.
1180	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
1181
1182	IF ( use_prescribed_profile_data ) THEN
1183	mean_inflow_profiles(:,1) = u_init ! u
1184	mean_inflow_profiles(:,2) = v_init ! v
1185	ELSE
1186	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1187	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1188	ENDIF
1189	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1190	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1191
1192	!
1193	!-- If necessary, adjust the horizontal flow field to the prescribed
1194	!-- profiles
1195	IF ( use_prescribed_profile_data ) THEN
1196	DO i = nxlg, nxrg
1197	DO j = nysg, nyng
1198	DO k = nzb, nzt+1
1199	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1200	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1201	ENDDO
1202	ENDDO
1203	ENDDO
1204	ENDIF
1205
1206	!
1207	!-- Use these mean profiles at the inflow (provided that Dirichlet
1208	!-- conditions are used)
1209	IF ( inflow_l ) THEN
1210	DO j = nysg, nyng
1211	DO k = nzb, nzt+1
1212	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1213	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1214	w(k,j,nxlg:-1) = 0.0
1215	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1216	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1217	ENDDO
1218	ENDDO
1219	ENDIF
1220
1221	!
1222	!-- Calculate the damping factors to be used at the inflow. For a
1223	!-- turbulent inflow the turbulent fluctuations have to be limited
1224	!-- vertically because otherwise the turbulent inflow layer will grow
1225	!-- in time.
1226	IF ( inflow_damping_height == 9999999.9 ) THEN
1227	!
1228	!-- Default: use the inversion height calculated by the prerun; if
1229	!-- this is zero, inflow_damping_height must be explicitly
1230	!-- specified.
1231	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0 ) THEN
1232	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1233	ELSE
1234	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1235	'explicitly specified because&the inversion height ', &
1236	'calculated by the prerun is zero.'
1237	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1238	ENDIF
1239
1240	ENDIF
1241
1242	IF ( inflow_damping_width == 9999999.9 ) THEN
1243	!
1244	!-- Default for the transition range: one tenth of the undamped
1245	!-- layer
1246	inflow_damping_width = 0.1 * inflow_damping_height
1247
1248	ENDIF
1249
1250	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1251
1252	DO k = nzb, nzt+1
1253
1254	IF ( zu(k) <= inflow_damping_height ) THEN
1255	inflow_damping_factor(k) = 1.0
1256	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1257	inflow_damping_factor(k) = 1.0 - &
1258	( zu(k) - inflow_damping_height ) / &
1259	inflow_damping_width
1260	ELSE
1261	inflow_damping_factor(k) = 0.0
1262	ENDIF
1263
1264	ENDDO
1265
1266	ENDIF
1267
1268	!
1269	!-- Inside buildings set velocities and TKE back to zero
1270	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1271	topography /= 'flat' ) THEN
1272	!
1273	!-- Inside buildings set velocities and TKE back to zero.
1274	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1275	!-- maybe revise later.
1276	DO i = nxlg, nxrg
1277	DO j = nysg, nyng
1278	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1279	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1280	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1281	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1282	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1283	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1284	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1285	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1286	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1287	ENDDO
1288	ENDDO
1289
1290	ENDIF
1291
1292	!
1293	!-- Calculate initial temperature field and other constants used in case
1294	!-- of a sloping surface
1295	IF ( sloping_surface ) CALL init_slope
1296
1297	!
1298	!-- Initialize new time levels (only done in order to set boundary values
1299	!-- including ghost points)
1300	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1301	IF ( humidity .OR. passive_scalar ) THEN
1302	q_p = q
1303	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1304	precipitation ) THEN
1305	qr_p = qr
1306	nr_p = nr
1307	ENDIF
1308	ENDIF
1309	IF ( ocean ) sa_p = sa
1310
1311	!
1312	!-- Allthough tendency arrays are set in prognostic_equations, they have
1313	!-- have to be predefined here because they are used (but multiplied with 0)
1314	!-- there before they are set.
1315	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1316	IF ( humidity .OR. passive_scalar ) THEN
1317	tq_m = 0.0
1318	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1319	precipitation ) THEN
1320	tqr_m = 0.0
1321	tnr_m = 0.0
1322	ENDIF
1323	ENDIF
1324	IF ( ocean ) tsa_m = 0.0
1325
1326	ELSE
1327	!
1328	!-- Actually this part of the programm should not be reached
1329	message_string = 'unknown initializing problem'
1330	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1331	ENDIF
1332
1333
1334	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1335	!
1336	!-- Initialize old timelevels needed for radiation boundary conditions
1337	IF ( outflow_l ) THEN
1338	u_m_l(:,:,:) = u(:,:,1:2)
1339	v_m_l(:,:,:) = v(:,:,0:1)
1340	w_m_l(:,:,:) = w(:,:,0:1)
1341	ENDIF
1342	IF ( outflow_r ) THEN
1343	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1344	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1345	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1346	ENDIF
1347	IF ( outflow_s ) THEN
1348	u_m_s(:,:,:) = u(:,0:1,:)
1349	v_m_s(:,:,:) = v(:,1:2,:)
1350	w_m_s(:,:,:) = w(:,0:1,:)
1351	ENDIF
1352	IF ( outflow_n ) THEN
1353	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1354	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1355	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1356	ENDIF
1357
1358	ENDIF
1359
1360	!
1361	!-- Calculate the initial volume flow at the right and north boundary
1362	IF ( conserve_volume_flow ) THEN
1363
1364	IF ( use_prescribed_profile_data ) THEN
1365
1366	volume_flow_initial_l = 0.0
1367	volume_flow_area_l = 0.0
1368
1369	IF ( nxr == nx ) THEN
1370	DO j = nys, nyn
1371	DO k = nzb_2d(j,nx)+1, nzt
1372	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1373	u_init(k) * dzw(k)
1374	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1375	ENDDO
1376	ENDDO
1377	ENDIF
1378
1379	IF ( nyn == ny ) THEN
1380	DO i = nxl, nxr
1381	DO k = nzb_2d(ny,i)+1, nzt
1382	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1383	v_init(k) * dzw(k)
1384	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1385	ENDDO
1386	ENDDO
1387	ENDIF
1388
1389	#if defined( __parallel )
1390	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1391	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1392	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1393	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1394
1395	#else
1396	volume_flow_initial = volume_flow_initial_l
1397	volume_flow_area = volume_flow_area_l
1398	#endif
1399
1400	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1401
1402	volume_flow_initial_l = 0.0
1403	volume_flow_area_l = 0.0
1404
1405	IF ( nxr == nx ) THEN
1406	DO j = nys, nyn
1407	DO k = nzb_2d(j,nx)+1, nzt
1408	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1409	hom_sum(k,1,0) * dzw(k)
1410	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1411	ENDDO
1412	ENDDO
1413	ENDIF
1414
1415	IF ( nyn == ny ) THEN
1416	DO i = nxl, nxr
1417	DO k = nzb_2d(ny,i)+1, nzt
1418	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1419	hom_sum(k,2,0) * dzw(k)
1420	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1421	ENDDO
1422	ENDDO
1423	ENDIF
1424
1425	#if defined( __parallel )
1426	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1427	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1428	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1429	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1430
1431	#else
1432	volume_flow_initial = volume_flow_initial_l
1433	volume_flow_area = volume_flow_area_l
1434	#endif
1435
1436	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1437
1438	volume_flow_initial_l = 0.0
1439	volume_flow_area_l = 0.0
1440
1441	IF ( nxr == nx ) THEN
1442	DO j = nys, nyn
1443	DO k = nzb_2d(j,nx)+1, nzt
1444	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1445	u(k,j,nx) * dzw(k)
1446	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1447	ENDDO
1448	ENDDO
1449	ENDIF
1450
1451	IF ( nyn == ny ) THEN
1452	DO i = nxl, nxr
1453	DO k = nzb_2d(ny,i)+1, nzt
1454	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1455	v(k,ny,i) * dzw(k)
1456	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1457	ENDDO
1458	ENDDO
1459	ENDIF
1460
1461	#if defined( __parallel )
1462	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1463	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1464	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1465	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1466
1467	#else
1468	volume_flow_initial = volume_flow_initial_l
1469	volume_flow_area = volume_flow_area_l
1470	#endif
1471
1472	ENDIF
1473
1474	!
1475	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1476	!-- from u\|v_bulk instead
1477	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1478	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1479	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1480	ENDIF
1481
1482	ENDIF
1483
1484	!
1485	!-- Initialize quantities for special advections schemes
1486	CALL init_advec
1487
1488	!
1489	!-- Impose random perturbation on the horizontal velocity field and then
1490	!-- remove the divergences from the velocity field at the initial stage
1491	IF ( create_disturbances .AND. &
1492	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1493	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1494
1495	CALL disturb_field( nzb_u_inner, tend, u )
1496	CALL disturb_field( nzb_v_inner, tend, v )
1497	n_sor = nsor_ini
1498	!$acc data copy( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner, nzb_v_inner, nzb_w_inner, p, tric, u, v, w, weight_pres, weight_substep, tend )
1499	CALL pres
1500	!$acc end data
1501	n_sor = nsor
1502	ENDIF
1503
1504	!
1505	!-- Initialization of the leaf area density
1506	IF ( plant_canopy ) THEN
1507
1508	SELECT CASE ( TRIM( canopy_mode ) )
1509
1510	CASE( 'block' )
1511
1512	DO i = nxlg, nxrg
1513	DO j = nysg, nyng
1514	lad_s(:,j,i) = lad(:)
1515	cdc(:,j,i) = drag_coefficient
1516	IF ( passive_scalar ) THEN
1517	sls(:,j,i) = leaf_surface_concentration
1518	sec(:,j,i) = scalar_exchange_coefficient
1519	ENDIF
1520	ENDDO
1521	ENDDO
1522
1523	CASE DEFAULT
1524
1525	!
1526	!-- The DEFAULT case is reached either if the parameter
1527	!-- canopy mode contains a wrong character string or if the
1528	!-- user has coded a special case in the user interface.
1529	!-- There, the subroutine user_init_plant_canopy checks
1530	!-- which of these two conditions applies.
1531	CALL user_init_plant_canopy
1532
1533	END SELECT
1534
1535	CALL exchange_horiz( lad_s, nbgp )
1536	CALL exchange_horiz( cdc, nbgp )
1537
1538	IF ( passive_scalar ) THEN
1539	CALL exchange_horiz( sls, nbgp )
1540	CALL exchange_horiz( sec, nbgp )
1541	ENDIF
1542
1543	!
1544	!-- Sharp boundaries of the plant canopy in horizontal directions
1545	!-- In vertical direction the interpolation is retained, as the leaf
1546	!-- area density is initialised by prescribing a vertical profile
1547	!-- consisting of piecewise linear segments. The upper boundary
1548	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1549
1550	DO i = nxl, nxr
1551	DO j = nys, nyn
1552	DO k = nzb, nzt+1
1553	IF ( lad_s(k,j,i) > 0.0 ) THEN
1554	lad_u(k,j,i) = lad_s(k,j,i)
1555	lad_u(k,j,i+1) = lad_s(k,j,i)
1556	lad_v(k,j,i) = lad_s(k,j,i)
1557	lad_v(k,j+1,i) = lad_s(k,j,i)
1558	ENDIF
1559	ENDDO
1560	DO k = nzb, nzt
1561	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1562	ENDDO
1563	ENDDO
1564	ENDDO
1565
1566	lad_w(pch_index,:,:) = 0.0
1567	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1568
1569	CALL exchange_horiz( lad_u, nbgp )
1570	CALL exchange_horiz( lad_v, nbgp )
1571	CALL exchange_horiz( lad_w, nbgp )
1572
1573	!
1574	!-- Initialisation of the canopy heat source distribution
1575	IF ( cthf /= 0.0 ) THEN
1576	!
1577	!-- Piecewise evaluation of the leaf area index by
1578	!-- integration of the leaf area density
1579	lai(:,:,:) = 0.0
1580	DO i = nxlg, nxrg
1581	DO j = nysg, nyng
1582	DO k = pch_index-1, 0, -1
1583	lai(k,j,i) = lai(k+1,j,i) + &
1584	( 0.5 * ( lad_w(k+1,j,i) + &
1585	lad_s(k+1,j,i) ) * &
1586	( zw(k+1) - zu(k+1) ) ) + &
1587	( 0.5 * ( lad_w(k,j,i) + &
1588	lad_s(k+1,j,i) ) * &
1589	( zu(k+1) - zw(k) ) )
1590	ENDDO
1591	ENDDO
1592	ENDDO
1593
1594	!
1595	!-- Evaluation of the upward kinematic vertical heat flux within the
1596	!-- canopy
1597	DO i = nxlg, nxrg
1598	DO j = nysg, nyng
1599	DO k = 0, pch_index
1600	canopy_heat_flux(k,j,i) = cthf * &
1601	exp( -0.6 * lai(k,j,i) )
1602	ENDDO
1603	ENDDO
1604	ENDDO
1605
1606	!
1607	!-- The near surface heat flux is derived from the heat flux
1608	!-- distribution within the canopy
1609	shf(:,:) = canopy_heat_flux(0,:,:)
1610
1611	ENDIF
1612
1613	ENDIF
1614
1615	!
1616	!-- If required, initialize dvrp-software
1617	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
1618
1619	IF ( ocean ) THEN
1620	!
1621	!-- Initialize quantities needed for the ocean model
1622	CALL init_ocean
1623
1624	ELSE
1625	!
1626	!-- Initialize quantities for handling cloud physics
1627	!-- This routine must be called before lpm_init, because
1628	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1629	!-- lpm_init) is not defined.
1630	CALL init_cloud_physics
1631	ENDIF
1632
1633	!
1634	!-- If required, initialize particles
1635	IF ( particle_advection ) CALL lpm_init
1636
1637	!
1638	!-- Initialize the ws-scheme.
1639	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1640
1641	!
1642	!-- Setting weighting factors for calculation of perturbation pressure
1643	!-- and turbulent quantities from the RK substeps
1644	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1645
1646	weight_substep(1) = 1./6.
1647	weight_substep(2) = 3./10.
1648	weight_substep(3) = 8./15.
1649
1650	weight_pres(1) = 1./3.
1651	weight_pres(2) = 5./12.
1652	weight_pres(3) = 1./4.
1653
1654	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1655
1656	weight_substep(1) = 1./2.
1657	weight_substep(2) = 1./2.
1658
1659	weight_pres(1) = 1./2.
1660	weight_pres(2) = 1./2.
1661
1662	ELSE ! for Euler-method
1663
1664	weight_substep(1) = 1.0
1665	weight_pres(1) = 1.0
1666
1667	ENDIF
1668
1669	!
1670	!-- Initialize Rayleigh damping factors
1671	rdf = 0.0
1672	rdf_sc = 0.0
1673	IF ( rayleigh_damping_factor /= 0.0 ) THEN
1674	IF ( .NOT. ocean ) THEN
1675	DO k = nzb+1, nzt
1676	IF ( zu(k) >= rayleigh_damping_height ) THEN
1677	rdf(k) = rayleigh_damping_factor * &
1678	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
1679	/ ( zu(nzt) - rayleigh_damping_height ) )&
1680	)**2
1681	ENDIF
1682	ENDDO
1683	ELSE
1684	DO k = nzt, nzb+1, -1
1685	IF ( zu(k) <= rayleigh_damping_height ) THEN
1686	rdf(k) = rayleigh_damping_factor * &
1687	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
1688	/ ( rayleigh_damping_height - zu(nzb+1)))&
1689	)**2
1690	ENDIF
1691	ENDDO
1692	ENDIF
1693	ENDIF
1694	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1695
1696	!
1697	!-- Initialize the starting level and the vertical smoothing factor used for
1698	!-- the external pressure gradient
1699	dp_smooth_factor = 1.0
1700	IF ( dp_external ) THEN
1701	!
1702	!-- Set the starting level dp_level_ind_b only if it has not been set before
1703	!-- (e.g. in init_grid).
1704	IF ( dp_level_ind_b == 0 ) THEN
1705	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1706	dp_level_ind_b = ind_array(1) - 1 + nzb
1707	! MINLOC uses lower array bound 1
1708	ENDIF
1709	IF ( dp_smooth ) THEN
1710	dp_smooth_factor(:dp_level_ind_b) = 0.0
1711	DO k = dp_level_ind_b+1, nzt
1712	dp_smooth_factor(k) = 0.5 * ( 1.0 + SIN( pi * &
1713	( REAL( k - dp_level_ind_b ) / &
1714	REAL( nzt - dp_level_ind_b ) - 0.5 ) ) )
1715	ENDDO
1716	ENDIF
1717	ENDIF
1718
1719	!
1720	!-- Initialize damping zone for the potential temperature in case of
1721	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1722	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1723	ptdf_x = 0.0
1724	ptdf_y = 0.0
1725	IF ( bc_lr_dirrad ) THEN
1726	DO i = nxl, nxr
1727	IF ( ( i * dx ) < pt_damping_width ) THEN
1728	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5 * &
1729	REAL( pt_damping_width - i * dx ) / ( &
1730	REAL( pt_damping_width ) ) ) )**2
1731	ENDIF
1732	ENDDO
1733	ELSEIF ( bc_lr_raddir ) THEN
1734	DO i = nxl, nxr
1735	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1736	ptdf_x(i) = pt_damping_factor * &
1737	SIN( pi * 0.5 * ( ( i - nx ) * dx + pt_damping_width ) / &
1738	REAL( pt_damping_width ) )**2
1739	ENDIF
1740	ENDDO
1741	ELSEIF ( bc_ns_dirrad ) THEN
1742	DO j = nys, nyn
1743	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1744	ptdf_y(j) = pt_damping_factor * &
1745	SIN( pi * 0.5 * ( ( j - ny ) * dy + pt_damping_width ) / &
1746	REAL( pt_damping_width ) )**2
1747	ENDIF
1748	ENDDO
1749	ELSEIF ( bc_ns_raddir ) THEN
1750	DO j = nys, nyn
1751	IF ( ( j * dy ) < pt_damping_width ) THEN
1752	ptdf_y(j) = pt_damping_factor * &
1753	SIN( pi * 0.5 * ( pt_damping_width - j * dy ) / &
1754	REAL( pt_damping_width ) )**2
1755	ENDIF
1756	ENDDO
1757	ENDIF
1758
1759	!
1760	!-- Initialize local summation arrays for routine flow_statistics.
1761	!-- This is necessary because they may not yet have been initialized when they
1762	!-- are called from flow_statistics (or - depending on the chosen model run -
1763	!-- are never initialized)
1764	sums_divnew_l = 0.0
1765	sums_divold_l = 0.0
1766	sums_l_l = 0.0
1767	sums_up_fraction_l = 0.0
1768	sums_wsts_bc_l = 0.0
1769
1770	!
1771	!-- Pre-set masks for regional statistics. Default is the total model domain.
1772	!-- Ghost points are excluded because counting values at the ghost boundaries
1773	!-- would bias the statistics
1774	rmask = 1.0
1775	rmask(:,nxlg:nxl-1,:) = 0.0; rmask(:,nxr+1:nxrg,:) = 0.0
1776	rmask(nysg:nys-1,:,:) = 0.0; rmask(nyn+1:nyng,:,:) = 0.0
1777
1778	!
1779	!-- User-defined initializing actions. Check afterwards, if maximum number
1780	!-- of allowed timeseries is exceeded
1781	CALL user_init
1782
1783	IF ( dots_num > dots_max ) THEN
1784	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1785	' its maximum of dots_max = ', dots_max, &
1786	' &Please increase dots_max in modules.f90.'
1787	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1788	ENDIF
1789
1790	!
1791	!-- Input binary data file is not needed anymore. This line must be placed
1792	!-- after call of user_init!
1793	CALL close_file( 13 )
1794
1795	!
1796	!-- Compute total sum of active mask grid points
1797	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1798	!-- total domain
1799	!-- ngp_3d: number of grid points of the total domain
1800	ngp_2dh_outer_l = 0
1801	ngp_2dh_outer = 0
1802	ngp_2dh_s_inner_l = 0
1803	ngp_2dh_s_inner = 0
1804	ngp_2dh_l = 0
1805	ngp_2dh = 0
1806	ngp_3d_inner_l = 0.0
1807	ngp_3d_inner = 0
1808	ngp_3d = 0
1809	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1810
1811	DO sr = 0, statistic_regions
1812	DO i = nxl, nxr
1813	DO j = nys, nyn
1814	IF ( rmask(j,i,sr) == 1.0 ) THEN
1815	!
1816	!-- All xy-grid points
1817	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1818	!
1819	!-- xy-grid points above topography
1820	DO k = nzb_s_outer(j,i), nz + 1
1821	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1822	ENDDO
1823	DO k = nzb_s_inner(j,i), nz + 1
1824	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1825	ENDDO
1826	!
1827	!-- All grid points of the total domain above topography
1828	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1829	( nz - nzb_s_inner(j,i) + 2 )
1830	ENDIF
1831	ENDDO
1832	ENDDO
1833	ENDDO
1834
1835	sr = statistic_regions + 1
1836	#if defined( __parallel )
1837	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1838	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1839	comm2d, ierr )
1840	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1841	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1842	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1843	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1844	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1845	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1846	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1847	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1848	MPI_SUM, comm2d, ierr )
1849	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1850	#else
1851	ngp_2dh = ngp_2dh_l
1852	ngp_2dh_outer = ngp_2dh_outer_l
1853	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1854	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1855	#endif
1856
1857	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1858	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1859
1860	!
1861	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1862	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1863	!-- the respective subdomain lie below the surface topography
1864	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1865	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1866	ngp_3d_inner(:) )
1867	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1868
1869	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1870
1871
1872	END SUBROUTINE init_3d_model

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