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source: palm/trunk/SOURCE/init_3d_model.f90 @ 2001

Last change on this file since 2001 was 2001, checked in by knoop, 8 years ago

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1	!> @file init_3d_model.f90
2	!------------------------------------------------------------------------------!
3	! This file is part of PALM.
4	!
5	! PALM is free software: you can redistribute it and/or modify it under the
6	! terms of the GNU General Public License as published by the Free Software
7	! Foundation, either version 3 of the License, or (at your option) any later
8	! version.
9	!
10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13	!
14	! You should have received a copy of the GNU General Public License along with
15	! PALM. If not, see <http://www.gnu.org/licenses/>.
16	!
17	! Copyright 1997-2016 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! ------------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: init_3d_model.f90 2001 2016-08-20 18:41:22Z knoop $
27	!
28	! 2000 2016-08-20 18:09:15Z knoop
29	! Forced header and separation lines into 80 columns
30	!
31	! 1992 2016-08-12 15:14:59Z suehring
32	! Initializaton of scalarflux at model top
33	! Bugfixes in initialization of surface and top salinity flux, top scalar and
34	! humidity fluxes
35	!
36	! 1960 2016-07-12 16:34:24Z suehring
37	! Separate humidity and passive scalar
38	! Increase dimension for mean_inflow_profiles
39	! Remove inadvertent write-statement
40	! Bugfix, large-scale forcing is still not implemented for passive scalars
41	!
42	! 1957 2016-07-07 10:43:48Z suehring
43	! flight module added
44	!
45	! 1920 2016-05-30 10:50:15Z suehring
46	! Initialize us with very small number to avoid segmentation fault during
47	! calculation of Obukhov length
48	!
49	! 1918 2016-05-27 14:35:57Z raasch
50	! intermediate_timestep_count is set 0 instead 1 for first call of pres,
51	! bugfix: initialization of local sum arrays are moved to the beginning of the
52	! routine because otherwise results from pres are overwritten
53	!
54	! 1914 2016-05-26 14:44:07Z witha
55	! Added initialization of the wind turbine model
56	!
57	! 1878 2016-04-19 12:30:36Z hellstea
58	! The zeroth element of weight_pres removed as unnecessary
59	!
60	! 1849 2016-04-08 11:33:18Z hoffmann
61	! Adapted for modularization of microphysics.
62	! precipitation_amount, precipitation_rate, prr moved to arrays_3d.
63	! Initialization of nc_1d, nr_1d, pt_1d, qc_1d, qr_1d, q_1d moved to
64	! microphysics_init.
65	!
66	! 1845 2016-04-08 08:29:13Z raasch
67	! nzb_2d replaced by nzb_u\|v_inner
68	!
69	! 1833 2016-04-07 14:23:03Z raasch
70	! initialization of spectra quantities moved to spectra_mod
71	!
72	! 1831 2016-04-07 13:15:51Z hoffmann
73	! turbulence renamed collision_turbulence
74	!
75	! 1826 2016-04-07 12:01:39Z maronga
76	! Renamed radiation calls.
77	! Renamed canopy model calls.
78	!
79	! 1822 2016-04-07 07:49:42Z hoffmann
80	! icloud_scheme replaced by microphysics_*
81	!
82	! 1817 2016-04-06 15:44:20Z maronga
83	! Renamed lsm calls.
84	!
85	! 1815 2016-04-06 13:49:59Z raasch
86	! zero-settings for velocities inside topography re-activated (was deactivated
87	! in r1762)
88	!
89	! 1788 2016-03-10 11:01:04Z maronga
90	! Added z0q.
91	! Syntax layout improved.
92	!
93	! 1783 2016-03-06 18:36:17Z raasch
94	! netcdf module name changed + related changes
95	!
96	! 1764 2016-02-28 12:45:19Z raasch
97	! bugfix: increase size of volume_flow_area_l and volume_flow_initial_l by 1
98	!
99	! 1762 2016-02-25 12:31:13Z hellstea
100	! Introduction of nested domain feature
101	!
102	! 1738 2015-12-18 13:56:05Z raasch
103	! calculate mean surface level height for each statistic region
104	!
105	! 1734 2015-12-02 12:17:12Z raasch
106	! no initial disturbances in case that the disturbance energy limit has been
107	! set zero
108	!
109	! 1707 2015-11-02 15:24:52Z maronga
110	! Bugfix: transfer of Richardson number from 1D model to Obukhov length caused
111	! devision by zero in neutral stratification
112	!
113	! 1691 2015-10-26 16:17:44Z maronga
114	! Call to init_surface_layer added. rif is replaced by ol and zeta.
115	!
116	! 1682 2015-10-07 23:56:08Z knoop
117	! Code annotations made doxygen readable
118	!
119	! 1615 2015-07-08 18:49:19Z suehring
120	! Enable turbulent inflow for passive_scalar and humidity
121	!
122	! 1585 2015-04-30 07:05:52Z maronga
123	! Initialization of radiation code is now done after LSM initializtion
124	!
125	! 1575 2015-03-27 09:56:27Z raasch
126	! adjustments for psolver-queries
127	!
128	! 1551 2015-03-03 14:18:16Z maronga
129	! Allocation of land surface arrays is now done in the subroutine lsm_init_arrays,
130	! which is part of land_surface_model.
131	!
132	! 1507 2014-12-10 12:14:18Z suehring
133	! Bugfix: set horizontal velocity components to zero inside topography
134	!
135	! 1496 2014-12-02 17:25:50Z maronga
136	! Added initialization of the land surface and radiation schemes
137	!
138	! 1484 2014-10-21 10:53:05Z kanani
139	! Changes due to new module structure of the plant canopy model:
140	! canopy-related initialization (e.g. lad and canopy_heat_flux) moved to new
141	! subroutine init_plant_canopy within the module plant_canopy_model_mod,
142	! call of subroutine init_plant_canopy added.
143	!
144	! 1431 2014-07-15 14:47:17Z suehring
145	! var_d added, in order to normalize spectra.
146	!
147	! 1429 2014-07-15 12:53:45Z knoop
148	! Ensemble run capability added to parallel random number generator
149	!
150	! 1411 2014-05-16 18:01:51Z suehring
151	! Initial horizontal velocity profiles were not set to zero at the first vertical
152	! grid level in case of non-cyclic lateral boundary conditions.
153	!
154	! 1406 2014-05-16 13:47:01Z raasch
155	! bugfix: setting of initial velocities at k=1 to zero not in case of a
156	! no-slip boundary condition for uv
157	!
158	! 1402 2014-05-09 14:25:13Z raasch
159	! location messages modified
160	!
161	! 1400 2014-05-09 14:03:54Z knoop
162	! Parallel random number generator added
163	!
164	! 1384 2014-05-02 14:31:06Z raasch
165	! location messages added
166	!
167	! 1361 2014-04-16 15:17:48Z hoffmann
168	! tend_* removed
169	! Bugfix: w_subs is not allocated anymore if it is already allocated
170	!
171	! 1359 2014-04-11 17:15:14Z hoffmann
172	! module lpm_init_mod added to use statements, because lpm_init has become a
173	! module
174	!
175	! 1353 2014-04-08 15:21:23Z heinze
176	! REAL constants provided with KIND-attribute
177	!
178	! 1340 2014-03-25 19:45:13Z kanani
179	! REAL constants defined as wp-kind
180	!
181	! 1322 2014-03-20 16:38:49Z raasch
182	! REAL constants defined as wp-kind
183	! module interfaces removed
184	!
185	! 1320 2014-03-20 08:40:49Z raasch
186	! ONLY-attribute added to USE-statements,
187	! kind-parameters added to all INTEGER and REAL declaration statements,
188	! kinds are defined in new module kinds,
189	! revision history before 2012 removed,
190	! comment fields (!:) to be used for variable explanations added to
191	! all variable declaration statements
192	!
193	! 1316 2014-03-17 07:44:59Z heinze
194	! Bugfix: allocation of w_subs
195	!
196	! 1299 2014-03-06 13:15:21Z heinze
197	! Allocate w_subs due to extension of large scale subsidence in combination
198	! with large scale forcing data (LSF_DATA)
199	!
200	! 1241 2013-10-30 11:36:58Z heinze
201	! Overwrite initial profiles in case of nudging
202	! Inititialize shf and qsws in case of large_scale_forcing
203	!
204	! 1221 2013-09-10 08:59:13Z raasch
205	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
206	! copy
207	!
208	! 1212 2013-08-15 08:46:27Z raasch
209	! array tri is allocated and included in data copy statement
210	!
211	! 1195 2013-07-01 12:27:57Z heinze
212	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
213	!
214	! 1179 2013-06-14 05:57:58Z raasch
215	! allocate and set ref_state to be used in buoyancy terms
216	!
217	! 1171 2013-05-30 11:27:45Z raasch
218	! diss array is allocated with full size if accelerator boards are used
219	!
220	! 1159 2013-05-21 11:58:22Z fricke
221	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
222	!
223	! 1153 2013-05-10 14:33:08Z raasch
224	! diss array is allocated with dummy elements even if it is not needed
225	! (required by PGI 13.4 / CUDA 5.0)
226	!
227	! 1115 2013-03-26 18:16:16Z hoffmann
228	! unused variables removed
229	!
230	! 1113 2013-03-10 02:48:14Z raasch
231	! openACC directive modified
232	!
233	! 1111 2013-03-08 23:54:10Z raasch
234	! openACC directives added for pres
235	! array diss allocated only if required
236	!
237	! 1092 2013-02-02 11:24:22Z raasch
238	! unused variables removed
239	!
240	! 1065 2012-11-22 17:42:36Z hoffmann
241	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
242	!
243	! 1053 2012-11-13 17:11:03Z hoffmann
244	! allocation and initialisation of necessary data arrays for the two-moment
245	! cloud physics scheme the two new prognostic equations (nr, qr):
246	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
247	! +tend_*, prr
248	!
249	! 1036 2012-10-22 13:43:42Z raasch
250	! code put under GPL (PALM 3.9)
251	!
252	! 1032 2012-10-21 13:03:21Z letzel
253	! save memory by not allocating pt_2 in case of neutral = .T.
254	!
255	! 1025 2012-10-07 16:04:41Z letzel
256	! bugfix: swap indices of mask for ghost boundaries
257	!
258	! 1015 2012-09-27 09:23:24Z raasch
259	! mask is set to zero for ghost boundaries
260	!
261	! 1010 2012-09-20 07:59:54Z raasch
262	! cpp switch __nopointer added for pointer free version
263	!
264	! 1003 2012-09-14 14:35:53Z raasch
265	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
266	!
267	! 1001 2012-09-13 14:08:46Z raasch
268	! all actions concerning leapfrog scheme removed
269	!
270	! 996 2012-09-07 10:41:47Z raasch
271	! little reformatting
272	!
273	! 978 2012-08-09 08:28:32Z fricke
274	! outflow damping layer removed
275	! roughness length for scalar quantites z0h added
276	! damping zone for the potential temperatur in case of non-cyclic lateral
277	! boundaries added
278	! initialization of ptdf_x, ptdf_y
279	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
280	!
281	! 849 2012-03-15 10:35:09Z raasch
282	! init_particles renamed lpm_init
283	!
284	! 825 2012-02-19 03:03:44Z raasch
285	! wang_collision_kernel renamed wang_kernel
286	!
287	! Revision 1.1 1998/03/09 16:22:22 raasch
288	! Initial revision
289	!
290	!
291	! Description:
292	! ------------
293	!> Allocation of arrays and initialization of the 3D model via
294	!> a) pre-run the 1D model
295	!> or
296	!> b) pre-set constant linear profiles
297	!> or
298	!> c) read values of a previous run
299	!------------------------------------------------------------------------------!
300	SUBROUTINE init_3d_model
301
302
303	USE advec_ws
304
305	USE arrays_3d
306
307	USE constants, &
308	ONLY: pi
309
310	USE control_parameters
311
312	USE flight_mod, &
313	ONLY: flight_init
314
315	USE grid_variables, &
316	ONLY: dx, dy
317
318	USE indices
319
320	USE lpm_init_mod, &
321	ONLY: lpm_init
322
323	USE kinds
324
325	USE land_surface_model_mod, &
326	ONLY: lsm_init, lsm_init_arrays, land_surface
327
328	USE ls_forcing_mod
329
330	USE microphysics_mod, &
331	ONLY: collision_turbulence, microphysics_init
332
333	USE model_1d, &
334	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
335
336	USE netcdf_interface, &
337	ONLY: dots_max, dots_num
338
339	USE particle_attributes, &
340	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
341
342	USE pegrid
343
344	USE plant_canopy_model_mod, &
345	ONLY: pcm_init, plant_canopy
346
347	USE radiation_model_mod, &
348	ONLY: radiation_init, radiation
349
350	USE random_function_mod
351
352	USE random_generator_parallel, &
353	ONLY: random_number_parallel, random_seed_parallel, random_dummy, &
354	id_random_array, seq_random_array
355
356	USE statistics, &
357	ONLY: hom, hom_sum, mean_surface_level_height, pr_palm, rmask, &
358	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
359	sums_l_l, sums_up_fraction_l, sums_wsts_bc_l, ts_value, &
360	weight_pres, weight_substep
361
362	USE surface_layer_fluxes_mod, &
363	ONLY: init_surface_layer_fluxes
364
365	USE transpose_indices
366
367	USE wind_turbine_model_mod, &
368	ONLY: wtm_init, wtm_init_arrays, wind_turbine
369
370	IMPLICIT NONE
371
372	INTEGER(iwp) :: i !<
373	INTEGER(iwp) :: ind_array(1) !<
374	INTEGER(iwp) :: j !<
375	INTEGER(iwp) :: k !<
376	INTEGER(iwp) :: sr !<
377
378	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !<
379
380	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !<
381	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !<
382
383	REAL(wp), DIMENSION(1:3) :: volume_flow_area_l !<
384	REAL(wp), DIMENSION(1:3) :: volume_flow_initial_l !<
385
386	REAL(wp), DIMENSION(:), ALLOCATABLE :: mean_surface_level_height_l !<
387	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !<
388	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !<
389
390
391	CALL location_message( 'allocating arrays', .FALSE. )
392	!
393	!-- Allocate arrays
394	ALLOCATE( mean_surface_level_height(0:statistic_regions), &
395	mean_surface_level_height_l(0:statistic_regions), &
396	ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
397	ngp_3d(0:statistic_regions), &
398	ngp_3d_inner(0:statistic_regions), &
399	ngp_3d_inner_l(0:statistic_regions), &
400	ngp_3d_inner_tmp(0:statistic_regions), &
401	sums_divnew_l(0:statistic_regions), &
402	sums_divold_l(0:statistic_regions) )
403	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
404	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
405	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
406	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
407	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
408	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
409	sums(nzb:nzt+1,pr_palm+max_pr_user), &
410	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
411	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
412	sums_up_fraction_l(10,3,0:statistic_regions), &
413	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
414	ts_value(dots_max,0:statistic_regions) )
415	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
416
417	ALLOCATE( ol(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
418	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
419	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
420	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
421	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
422	z0h(nysg:nyng,nxlg:nxrg), z0q(nysg:nyng,nxlg:nxrg) )
423
424	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
425	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
426	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
427	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
428	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
429
430	#if defined( __nopointer )
431	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
432	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
433	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
434	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
435	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
436	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
437	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
438	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
439	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
440	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
441	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
442	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
443	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
444	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
445	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
446	#else
447	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
448	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
449	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
450	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
451	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
452	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
453	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
454	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
455	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
456	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
457	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
458	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
459	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
460	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
461	IF ( .NOT. neutral ) THEN
462	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
463	ENDIF
464	#endif
465
466	!
467	!-- Following array is required for perturbation pressure within the iterative
468	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
469	!-- the weighted average of the substeps and cannot be used in the Poisson
470	!-- solver.
471	IF ( psolver == 'sor' ) THEN
472	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
473	ELSEIF ( psolver(1:9) == 'multigrid' ) THEN
474	!
475	!-- For performance reasons, multigrid is using one ghost layer only
476	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
477	ENDIF
478
479	!
480	!-- Array for storing constant coeffficients of the tridiagonal solver
481	IF ( psolver == 'poisfft' ) THEN
482	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
483	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
484	ENDIF
485
486	IF ( humidity ) THEN
487	!
488	!-- 2D-humidity
489	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
490	qsws(nysg:nyng,nxlg:nxrg), &
491	qswst(nysg:nyng,nxlg:nxrg) )
492
493	!
494	!-- 3D-humidity
495	#if defined( __nopointer )
496	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
497	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
498	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
499	#else
500	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
501	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
502	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
503	#endif
504
505	!
506	!-- 3D-arrays needed for humidity
507	IF ( humidity ) THEN
508	#if defined( __nopointer )
509	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
510	#else
511	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
512	#endif
513
514	IF ( cloud_physics ) THEN
515
516	!
517	!-- Liquid water content
518	#if defined( __nopointer )
519	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
520	#else
521	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
522	#endif
523	!
524	!-- Precipitation amount and rate (only needed if output is switched)
525	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
526	precipitation_rate(nysg:nyng,nxlg:nxrg) )
527
528	!
529	!-- 3D-cloud water content
530	#if defined( __nopointer )
531	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
532	#else
533	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
534	#endif
535	!
536	!-- 3d-precipitation rate
537	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
538
539	IF ( microphysics_seifert ) THEN
540	!
541	!-- 2D-rain water content and rain drop concentration arrays
542	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
543	qrsws(nysg:nyng,nxlg:nxrg), &
544	qrswst(nysg:nyng,nxlg:nxrg), &
545	nrs(nysg:nyng,nxlg:nxrg), &
546	nrsws(nysg:nyng,nxlg:nxrg), &
547	nrswst(nysg:nyng,nxlg:nxrg) )
548	!
549	!-- 3D-rain water content, rain drop concentration arrays
550	#if defined( __nopointer )
551	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
552	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
553	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
554	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
555	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
556	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
557	#else
558	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
559	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
560	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
561	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
562	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
563	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
564	#endif
565	ENDIF
566
567	ENDIF
568
569	IF ( cloud_droplets ) THEN
570	!
571	!-- Liquid water content, change in liquid water content
572	#if defined( __nopointer )
573	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
574	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
575	#else
576	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
577	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
578	#endif
579	!
580	!-- Real volume of particles (with weighting), volume of particles
581	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
582	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
583	ENDIF
584
585	ENDIF
586
587	ENDIF
588
589
590	IF ( passive_scalar ) THEN
591	!
592	!-- 2D-scalar arrays
593	ALLOCATE ( ss(nysg:nyng,nxlg:nxrg), &
594	ssws(nysg:nyng,nxlg:nxrg), &
595	sswst(nysg:nyng,nxlg:nxrg) )
596
597	!
598	!-- 3D scalar arrays
599	#if defined( __nopointer )
600	ALLOCATE( s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
601	s_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
602	ts_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
603	#else
604	ALLOCATE( s_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
605	s_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
606	s_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
607	#endif
608	ENDIF
609
610	IF ( ocean ) THEN
611	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
612	saswst(nysg:nyng,nxlg:nxrg) )
613	#if defined( __nopointer )
614	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
615	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
616	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
617	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
618	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
619	#else
620	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
621	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
622	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
623	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
624	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
625	prho => prho_1
626	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
627	! density to be apointer
628	#endif
629	IF ( humidity_remote ) THEN
630	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
631	qswst_remote = 0.0_wp
632	ENDIF
633	ENDIF
634
635	!
636	!-- 3D-array for storing the dissipation, needed for calculating the sgs
637	!-- particle velocities
638	IF ( use_sgs_for_particles .OR. wang_kernel .OR. collision_turbulence &
639	.OR. num_acc_per_node > 0 ) THEN
640	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
641	ENDIF
642
643	!
644	!-- 1D-array for large scale subsidence velocity
645	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
646	ALLOCATE ( w_subs(nzb:nzt+1) )
647	w_subs = 0.0_wp
648	ENDIF
649
650	!
651	!-- ID-array and state-space-array for the parallel random number generator
652	IF ( random_generator == 'random-parallel' ) THEN
653	ALLOCATE ( seq_random_array(5,nysg:nyng,nxlg:nxrg) )
654	ALLOCATE ( id_random_array(0:ny,0:nx) )
655	seq_random_array = 0
656	id_random_array = 0
657	ENDIF
658
659	!
660	!-- 4D-array for storing the Rif-values at vertical walls
661	IF ( topography /= 'flat' ) THEN
662	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
663	rif_wall = 0.0_wp
664	ENDIF
665
666	!
667	!-- Arrays to store velocity data from t-dt and the phase speeds which
668	!-- are needed for radiation boundary conditions
669	IF ( outflow_l ) THEN
670	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
671	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
672	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
673	ENDIF
674	IF ( outflow_r ) THEN
675	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
676	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
677	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
678	ENDIF
679	IF ( outflow_l .OR. outflow_r ) THEN
680	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
681	c_w(nzb:nzt+1,nysg:nyng) )
682	ENDIF
683	IF ( outflow_s ) THEN
684	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
685	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
686	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
687	ENDIF
688	IF ( outflow_n ) THEN
689	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
690	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
691	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
692	ENDIF
693	IF ( outflow_s .OR. outflow_n ) THEN
694	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
695	c_w(nzb:nzt+1,nxlg:nxrg) )
696	ENDIF
697	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
698	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
699	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
700	ENDIF
701
702
703	#if ! defined( __nopointer )
704	!
705	!-- Initial assignment of the pointers
706	e => e_1; e_p => e_2; te_m => e_3
707	IF ( .NOT. neutral ) THEN
708	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
709	ELSE
710	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
711	ENDIF
712	u => u_1; u_p => u_2; tu_m => u_3
713	v => v_1; v_p => v_2; tv_m => v_3
714	w => w_1; w_p => w_2; tw_m => w_3
715
716	IF ( humidity ) THEN
717	q => q_1; q_p => q_2; tq_m => q_3
718	IF ( humidity ) THEN
719	vpt => vpt_1
720	IF ( cloud_physics ) THEN
721	ql => ql_1
722	qc => qc_1
723	IF ( microphysics_seifert ) THEN
724	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
725	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
726	ENDIF
727	ENDIF
728	ENDIF
729	IF ( cloud_droplets ) THEN
730	ql => ql_1
731	ql_c => ql_2
732	ENDIF
733	ENDIF
734
735	IF ( passive_scalar ) THEN
736	s => s_1; s_p => s_2; ts_m => s_3
737	ENDIF
738
739	IF ( ocean ) THEN
740	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
741	ENDIF
742	#endif
743
744	!
745	!-- Allocate land surface model arrays
746	IF ( land_surface ) THEN
747	CALL lsm_init_arrays
748	ENDIF
749
750	!
751	!-- Allocate wind turbine model arrays
752	IF ( wind_turbine ) THEN
753	CALL wtm_init_arrays
754	ENDIF
755
756	!
757	!-- Initialize virtual flight measurements
758	IF ( virtual_flight ) THEN
759	CALL flight_init
760	ENDIF
761
762	!
763	!-- Allocate arrays containing the RK coefficient for calculation of
764	!-- perturbation pressure and turbulent fluxes. At this point values are
765	!-- set for pressure calculation during initialization (where no timestep
766	!-- is done). Further below the values needed within the timestep scheme
767	!-- will be set.
768	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
769	weight_pres(1:intermediate_timestep_count_max) )
770	weight_substep = 1.0_wp
771	weight_pres = 1.0_wp
772	intermediate_timestep_count = 0 ! needed when simulated_time = 0.0
773
774	CALL location_message( 'finished', .TRUE. )
775
776	!
777	!-- Initialize local summation arrays for routine flow_statistics.
778	!-- This is necessary because they may not yet have been initialized when they
779	!-- are called from flow_statistics (or - depending on the chosen model run -
780	!-- are never initialized)
781	sums_divnew_l = 0.0_wp
782	sums_divold_l = 0.0_wp
783	sums_l_l = 0.0_wp
784	sums_up_fraction_l = 0.0_wp
785	sums_wsts_bc_l = 0.0_wp
786
787
788	!
789	!-- Initialize model variables
790	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
791	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
792	!
793	!-- First model run of a possible job queue.
794	!-- Initial profiles of the variables must be computes.
795	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
796
797	CALL location_message( 'initializing with 1D model profiles', .FALSE. )
798	!
799	!-- Use solutions of the 1D model as initial profiles,
800	!-- start 1D model
801	CALL init_1d_model
802	!
803	!-- Transfer initial profiles to the arrays of the 3D model
804	DO i = nxlg, nxrg
805	DO j = nysg, nyng
806	e(:,j,i) = e1d
807	kh(:,j,i) = kh1d
808	km(:,j,i) = km1d
809	pt(:,j,i) = pt_init
810	u(:,j,i) = u1d
811	v(:,j,i) = v1d
812	ENDDO
813	ENDDO
814
815	IF ( humidity ) THEN
816	DO i = nxlg, nxrg
817	DO j = nysg, nyng
818	q(:,j,i) = q_init
819	ENDDO
820	ENDDO
821	IF ( cloud_physics .AND. microphysics_seifert ) THEN
822	DO i = nxlg, nxrg
823	DO j = nysg, nyng
824	qr(:,j,i) = 0.0_wp
825	nr(:,j,i) = 0.0_wp
826	ENDDO
827	ENDDO
828
829	ENDIF
830	ENDIF
831	IF ( passive_scalar ) THEN
832	DO i = nxlg, nxrg
833	DO j = nysg, nyng
834	s(:,j,i) = s_init
835	ENDDO
836	ENDDO
837	ENDIF
838
839	IF ( .NOT. constant_diffusion ) THEN
840	DO i = nxlg, nxrg
841	DO j = nysg, nyng
842	e(:,j,i) = e1d
843	ENDDO
844	ENDDO
845	!
846	!-- Store initial profiles for output purposes etc.
847	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
848
849	IF ( constant_flux_layer ) THEN
850	ol = ( zu(nzb+1) - zw(nzb) ) / ( rif1d(nzb+1) + 1.0E-20_wp )
851	ts = 0.0_wp ! could actually be computed more accurately in the
852	! 1D model. Update when opportunity arises.
853	us = us1d
854	usws = usws1d
855	vsws = vsws1d
856	ELSE
857	ts = 0.0_wp ! must be set, because used in
858	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
859	us = 0.0_wp
860	usws = 0.0_wp
861	vsws = 0.0_wp
862	ENDIF
863
864	ELSE
865	e = 0.0_wp ! must be set, because used in
866	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
867	ts = 0.0_wp
868	us = 0.0_wp
869	usws = 0.0_wp
870	vsws = 0.0_wp
871	ENDIF
872	uswst = top_momentumflux_u
873	vswst = top_momentumflux_v
874
875	!
876	!-- In every case qs = 0.0 (see also pt)
877	!-- This could actually be computed more accurately in the 1D model.
878	!-- Update when opportunity arises!
879	IF ( humidity ) THEN
880	qs = 0.0_wp
881	IF ( cloud_physics .AND. microphysics_seifert ) THEN
882	qrs = 0.0_wp
883	nrs = 0.0_wp
884	ENDIF
885	ENDIF
886	!
887	!-- Initialize scaling parameter for passive scalar
888	IF ( passive_scalar ) ss = 0.0_wp
889
890	!
891	!-- Inside buildings set velocities back to zero
892	IF ( topography /= 'flat' ) THEN
893	DO i = nxlg, nxrg
894	DO j = nysg, nyng
895	u(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
896	v(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
897	ENDDO
898	ENDDO
899
900	!
901	!-- WARNING: The extra boundary conditions set after running the
902	!-- ------- 1D model impose an error on the divergence one layer
903	!-- below the topography; need to correct later
904	!-- ATTENTION: Provisional correction for Piacsek & Williams
905	!-- --------- advection scheme: keep u and v zero one layer below
906	!-- the topography.
907	IF ( ibc_uv_b == 1 ) THEN
908	!
909	!-- Neumann condition
910	DO i = nxl-1, nxr+1
911	DO j = nys-1, nyn+1
912	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
913	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
914	ENDDO
915	ENDDO
916
917	ENDIF
918
919	ENDIF
920
921	CALL location_message( 'finished', .TRUE. )
922
923	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
924	THEN
925
926	CALL location_message( 'initializing with constant profiles', .FALSE. )
927	!
928	!-- Overwrite initial profiles in case of nudging
929	IF ( nudging ) THEN
930	pt_init = ptnudge(:,1)
931	u_init = unudge(:,1)
932	v_init = vnudge(:,1)
933	IF ( humidity ) THEN ! is passive_scalar correct???
934	q_init = qnudge(:,1)
935	ENDIF
936
937	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
938	'scalars from NUDGING_DATA are used.'
939	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
940	ENDIF
941
942	!
943	!-- Use constructed initial profiles (velocity constant with height,
944	!-- temperature profile with constant gradient)
945	DO i = nxlg, nxrg
946	DO j = nysg, nyng
947	pt(:,j,i) = pt_init
948	u(:,j,i) = u_init
949	v(:,j,i) = v_init
950	ENDDO
951	ENDDO
952
953	!
954	!-- Set initial horizontal velocities at the lowest computational grid
955	!-- levels to zero in order to avoid too small time steps caused by the
956	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
957	!-- in the limiting formula!).
958	IF ( ibc_uv_b /= 1 ) THEN
959	DO i = nxlg, nxrg
960	DO j = nysg, nyng
961	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0_wp
962	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0_wp
963	ENDDO
964	ENDDO
965	ENDIF
966
967	IF ( humidity ) THEN
968	DO i = nxlg, nxrg
969	DO j = nysg, nyng
970	q(:,j,i) = q_init
971	ENDDO
972	ENDDO
973	IF ( cloud_physics .AND. microphysics_seifert ) THEN
974
975	DO i = nxlg, nxrg
976	DO j = nysg, nyng
977	qr(:,j,i) = 0.0_wp
978	nr(:,j,i) = 0.0_wp
979	ENDDO
980	ENDDO
981
982	ENDIF
983	ENDIF
984
985	IF ( passive_scalar ) THEN
986	DO i = nxlg, nxrg
987	DO j = nysg, nyng
988	s(:,j,i) = s_init
989	ENDDO
990	ENDDO
991	ENDIF
992
993	IF ( ocean ) THEN
994	DO i = nxlg, nxrg
995	DO j = nysg, nyng
996	sa(:,j,i) = sa_init
997	ENDDO
998	ENDDO
999	ENDIF
1000
1001	IF ( constant_diffusion ) THEN
1002	km = km_constant
1003	kh = km / prandtl_number
1004	e = 0.0_wp
1005	ELSEIF ( e_init > 0.0_wp ) THEN
1006	DO k = nzb+1, nzt
1007	km(k,:,:) = 0.1_wp * l_grid(k) * SQRT( e_init )
1008	ENDDO
1009	km(nzb,:,:) = km(nzb+1,:,:)
1010	km(nzt+1,:,:) = km(nzt,:,:)
1011	kh = km / prandtl_number
1012	e = e_init
1013	ELSE
1014	IF ( .NOT. ocean ) THEN
1015	kh = 0.01_wp ! there must exist an initial diffusion, because
1016	km = 0.01_wp ! otherwise no TKE would be produced by the
1017	! production terms, as long as not yet
1018	! e = (u/cm)*2 at k=nzb+1
1019	ELSE
1020	kh = 0.00001_wp
1021	km = 0.00001_wp
1022	ENDIF
1023	e = 0.0_wp
1024	ENDIF
1025	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min
1026	ts = 0.0_wp
1027	!
1028	!-- Very small number is required for calculation of Obukhov length
1029	!-- at first timestep
1030	us = 1E-30_wp
1031	usws = 0.0_wp
1032	uswst = top_momentumflux_u
1033	vsws = 0.0_wp
1034	vswst = top_momentumflux_v
1035	IF ( humidity ) qs = 0.0_wp
1036	IF ( passive_scalar ) ss = 0.0_wp
1037
1038	!
1039	!-- Compute initial temperature field and other constants used in case
1040	!-- of a sloping surface
1041	IF ( sloping_surface ) CALL init_slope
1042
1043	CALL location_message( 'finished', .TRUE. )
1044
1045	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
1046	THEN
1047
1048	CALL location_message( 'initializing by user', .FALSE. )
1049	!
1050	!-- Initialization will completely be done by the user
1051	CALL user_init_3d_model
1052
1053	CALL location_message( 'finished', .TRUE. )
1054
1055	ENDIF
1056
1057	CALL location_message( 'initializing statistics, boundary conditions, etc.', &
1058	.FALSE. )
1059
1060	!
1061	!-- Bottom boundary
1062	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
1063	u(nzb,:,:) = 0.0_wp
1064	v(nzb,:,:) = 0.0_wp
1065	ENDIF
1066
1067	!
1068	!-- Apply channel flow boundary condition
1069	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
1070	u(nzt+1,:,:) = 0.0_wp
1071	v(nzt+1,:,:) = 0.0_wp
1072	ENDIF
1073
1074	!
1075	!-- Calculate virtual potential temperature
1076	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
1077
1078	!
1079	!-- Store initial profiles for output purposes etc.
1080	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
1081	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
1082	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
1083	hom(nzb,1,5,:) = 0.0_wp
1084	hom(nzb,1,6,:) = 0.0_wp
1085	ENDIF
1086	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1087	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
1088	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
1089
1090	IF ( ocean ) THEN
1091	!
1092	!-- Store initial salinity profile
1093	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
1094	ENDIF
1095
1096	IF ( humidity ) THEN
1097	!
1098	!-- Store initial profile of total water content, virtual potential
1099	!-- temperature
1100	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1101	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
1102	IF ( cloud_physics .OR. cloud_droplets ) THEN
1103	!
1104	!-- Store initial profile of specific humidity and potential
1105	!-- temperature
1106	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1107	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1108	ENDIF
1109	ENDIF
1110
1111	IF ( passive_scalar ) THEN
1112	!
1113	!-- Store initial scalar profile
1114	hom(:,1,115,:) = SPREAD( s(:,nys,nxl), 2, statistic_regions+1 )
1115	ENDIF
1116
1117	!
1118	!-- Initialize the random number generators (from numerical recipes)
1119	CALL random_function_ini
1120
1121	IF ( random_generator == 'random-parallel' ) THEN
1122	!-- Asigning an ID to every vertical gridpoint column
1123	!-- dependig on the ensemble run number.
1124	random_dummy=1
1125	DO j=0,ny
1126	DO i=0,nx
1127	id_random_array(j,i) = random_dummy + 1E6 &
1128	* ( ensemble_member_nr - 1000 )
1129	random_dummy = random_dummy + 1
1130	END DO
1131	ENDDO
1132	!-- Initializing with random_seed_parallel for every vertical
1133	!-- gridpoint column.
1134	random_dummy=0
1135	DO j = nysg, nyng
1136	DO i = nxlg, nxrg
1137	CALL random_seed_parallel (random_sequence=id_random_array(j, i))
1138	CALL random_number_parallel (random_dummy)
1139	CALL random_seed_parallel (get=seq_random_array(:, j, i))
1140	END DO
1141	ENDDO
1142	ENDIF
1143
1144	!
1145	!-- Initialize fluxes at bottom surface
1146	IF ( use_surface_fluxes ) THEN
1147
1148	IF ( constant_heatflux ) THEN
1149	!
1150	!-- Heat flux is prescribed
1151	IF ( random_heatflux ) THEN
1152	CALL disturb_heatflux
1153	ELSE
1154	shf = surface_heatflux
1155	!
1156	!-- Initialize shf with data from external file LSF_DATA
1157	IF ( large_scale_forcing .AND. lsf_surf ) THEN
1158	CALL ls_forcing_surf ( simulated_time )
1159	ENDIF
1160
1161	!
1162	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
1163	IF ( TRIM( topography ) /= 'flat' ) THEN
1164	DO i = nxlg, nxrg
1165	DO j = nysg, nyng
1166	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1167	shf(j,i) = wall_heatflux(0)
1168	ENDIF
1169	ENDDO
1170	ENDDO
1171	ENDIF
1172	ENDIF
1173	ENDIF
1174
1175	!
1176	!-- Determine the near-surface water flux
1177	IF ( humidity ) THEN
1178	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1179	qrsws = 0.0_wp
1180	nrsws = 0.0_wp
1181	ENDIF
1182	IF ( constant_waterflux ) THEN
1183	qsws = surface_waterflux
1184	!
1185	!-- Over topography surface_waterflux is replaced by
1186	!-- wall_humidityflux(0)
1187	IF ( TRIM( topography ) /= 'flat' ) THEN
1188	wall_qflux = wall_humidityflux
1189	DO i = nxlg, nxrg
1190	DO j = nysg, nyng
1191	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1192	qsws(j,i) = wall_qflux(0)
1193	ENDIF
1194	ENDDO
1195	ENDDO
1196	ENDIF
1197	ENDIF
1198	ENDIF
1199	!
1200	!-- Initialize the near-surface scalar flux
1201	IF ( passive_scalar ) THEN
1202	IF ( constant_scalarflux ) THEN
1203	ssws = surface_scalarflux
1204	!
1205	!-- Over topography surface_scalarflux is replaced by
1206	!-- wall_scalarflux(0)
1207	IF ( TRIM( topography ) /= 'flat' ) THEN
1208	wall_sflux = wall_scalarflux
1209	DO i = nxlg, nxrg
1210	DO j = nysg, nyng
1211	IF ( nzb_s_inner(j,i) /= 0 ) ssws(j,i) = wall_sflux(0)
1212	ENDDO
1213	ENDDO
1214	ENDIF
1215	ENDIF
1216	ENDIF
1217	!
1218	!-- Initialize near-surface salinity flux
1219	IF ( ocean ) saswsb = bottom_salinityflux
1220
1221	ENDIF
1222
1223	!
1224	!-- Initialize fluxes at top surface
1225	!-- Currently, only the heatflux and salinity flux can be prescribed.
1226	!-- The latent flux is zero in this case!
1227	IF ( use_top_fluxes ) THEN
1228	!
1229	!-- Prescribe to heat flux
1230	IF ( constant_top_heatflux ) tswst = top_heatflux
1231	!
1232	!-- Prescribe zero latent flux at the top
1233	IF ( humidity ) THEN
1234	qswst = 0.0_wp
1235	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1236	nrswst = 0.0_wp
1237	qrswst = 0.0_wp
1238	ENDIF
1239	ENDIF
1240	!
1241	!-- Prescribe top scalar flux
1242	IF ( passive_scalar .AND. constant_top_scalarflux ) &
1243	sswst = top_scalarflux
1244	!
1245	!-- Prescribe top salinity flux
1246	IF ( ocean .AND. constant_top_salinityflux) &
1247	saswst = top_salinityflux
1248	!
1249	!-- Initialization in case of a coupled model run
1250	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1251	tswst = 0.0_wp
1252	ENDIF
1253
1254	ENDIF
1255
1256	!
1257	!-- Initialize Prandtl layer quantities
1258	IF ( constant_flux_layer ) THEN
1259
1260	z0 = roughness_length
1261	z0h = z0h_factor * z0
1262	z0q = z0h_factor * z0
1263
1264	IF ( .NOT. constant_heatflux ) THEN
1265	!
1266	!-- Surface temperature is prescribed. Here the heat flux cannot be
1267	!-- simply estimated, because therefore ol, u* and theta* would have
1268	!-- to be computed by iteration. This is why the heat flux is assumed
1269	!-- to be zero before the first time step. It approaches its correct
1270	!-- value in the course of the first few time steps.
1271	shf = 0.0_wp
1272	ENDIF
1273
1274	IF ( humidity ) THEN
1275	IF ( .NOT. constant_waterflux ) qsws = 0.0_wp
1276	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1277	qrsws = 0.0_wp
1278	nrsws = 0.0_wp
1279	ENDIF
1280	ENDIF
1281	IF ( passive_scalar .AND. .NOT. constant_scalarflux ) ssws = 0.0_wp
1282
1283	ENDIF
1284
1285	!
1286	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1287	!-- the reference state will be set (overwritten) in init_ocean)
1288	IF ( use_single_reference_value ) THEN
1289	IF ( .NOT. humidity ) THEN
1290	ref_state(:) = pt_reference
1291	ELSE
1292	ref_state(:) = vpt_reference
1293	ENDIF
1294	ELSE
1295	IF ( .NOT. humidity ) THEN
1296	ref_state(:) = pt_init(:)
1297	ELSE
1298	ref_state(:) = vpt(:,nys,nxl)
1299	ENDIF
1300	ENDIF
1301
1302	!
1303	!-- For the moment, vertical velocity is zero
1304	w = 0.0_wp
1305
1306	!
1307	!-- Initialize array sums (must be defined in first call of pres)
1308	sums = 0.0_wp
1309
1310	!
1311	!-- In case of iterative solvers, p must get an initial value
1312	IF ( psolver(1:9) == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
1313
1314	!
1315	!-- Treating cloud physics, liquid water content and precipitation amount
1316	!-- are zero at beginning of the simulation
1317	IF ( cloud_physics ) THEN
1318	ql = 0.0_wp
1319	qc = 0.0_wp
1320
1321	precipitation_amount = 0.0_wp
1322	ENDIF
1323	!
1324	!-- Impose vortex with vertical axis on the initial velocity profile
1325	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1326	CALL init_rankine
1327	ENDIF
1328
1329	!
1330	!-- Impose temperature anomaly (advection test only)
1331	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1332	CALL init_pt_anomaly
1333	ENDIF
1334
1335	!
1336	!-- If required, change the surface temperature at the start of the 3D run
1337	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
1338	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1339	ENDIF
1340
1341	!
1342	!-- If required, change the surface humidity/scalar at the start of the 3D
1343	!-- run
1344	IF ( humidity .AND. q_surface_initial_change /= 0.0_wp ) &
1345	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1346
1347	IF ( passive_scalar .AND. s_surface_initial_change /= 0.0_wp ) &
1348	s(nzb,:,:) = s(nzb,:,:) + s_surface_initial_change
1349
1350
1351	!
1352	!-- Initialize old and new time levels.
1353	te_m = 0.0_wp; tpt_m = 0.0_wp; tu_m = 0.0_wp; tv_m = 0.0_wp; tw_m = 0.0_wp
1354	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1355
1356	IF ( humidity ) THEN
1357	tq_m = 0.0_wp
1358	q_p = q
1359	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1360	tqr_m = 0.0_wp
1361	qr_p = qr
1362	tnr_m = 0.0_wp
1363	nr_p = nr
1364	ENDIF
1365	ENDIF
1366
1367	IF ( passive_scalar ) THEN
1368	ts_m = 0.0_wp
1369	s_p = s
1370	ENDIF
1371
1372	IF ( ocean ) THEN
1373	tsa_m = 0.0_wp
1374	sa_p = sa
1375	ENDIF
1376
1377	CALL location_message( 'finished', .TRUE. )
1378
1379	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1380	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1381	THEN
1382
1383	CALL location_message( 'initializing in case of restart / cyclic_fill', &
1384	.FALSE. )
1385	!
1386	!-- When reading data for cyclic fill of 3D prerun data files, read
1387	!-- some of the global variables from the restart file which are required
1388	!-- for initializing the inflow
1389	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1390
1391	DO i = 0, io_blocks-1
1392	IF ( i == io_group ) THEN
1393	CALL read_parts_of_var_list
1394	CALL close_file( 13 )
1395	ENDIF
1396	#if defined( __parallel )
1397	CALL MPI_BARRIER( comm2d, ierr )
1398	#endif
1399	ENDDO
1400
1401	ENDIF
1402
1403	!
1404	!-- Read binary data from restart file
1405	DO i = 0, io_blocks-1
1406	IF ( i == io_group ) THEN
1407	CALL read_3d_binary
1408	ENDIF
1409	#if defined( __parallel )
1410	CALL MPI_BARRIER( comm2d, ierr )
1411	#endif
1412	ENDDO
1413
1414	!
1415	!-- Initialization of the turbulence recycling method
1416	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1417	turbulent_inflow ) THEN
1418	!
1419	!-- First store the profiles to be used at the inflow.
1420	!-- These profiles are the (temporally) and horizontally averaged vertical
1421	!-- profiles from the prerun. Alternatively, prescribed profiles
1422	!-- for u,v-components can be used.
1423	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,7) )
1424
1425	IF ( use_prescribed_profile_data ) THEN
1426	mean_inflow_profiles(:,1) = u_init ! u
1427	mean_inflow_profiles(:,2) = v_init ! v
1428	ELSE
1429	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1430	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1431	ENDIF
1432	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1433	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1434	IF ( humidity ) &
1435	mean_inflow_profiles(:,6) = hom_sum(:,41,0) ! q
1436	IF ( passive_scalar ) &
1437	mean_inflow_profiles(:,7) = hom_sum(:,115,0) ! s
1438
1439	!
1440	!-- If necessary, adjust the horizontal flow field to the prescribed
1441	!-- profiles
1442	IF ( use_prescribed_profile_data ) THEN
1443	DO i = nxlg, nxrg
1444	DO j = nysg, nyng
1445	DO k = nzb, nzt+1
1446	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1447	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1448	ENDDO
1449	ENDDO
1450	ENDDO
1451	ENDIF
1452
1453	!
1454	!-- Use these mean profiles at the inflow (provided that Dirichlet
1455	!-- conditions are used)
1456	IF ( inflow_l ) THEN
1457	DO j = nysg, nyng
1458	DO k = nzb, nzt+1
1459	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1460	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1461	w(k,j,nxlg:-1) = 0.0_wp
1462	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1463	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1464	IF ( humidity ) &
1465	q(k,j,nxlg:-1) = mean_inflow_profiles(k,6)
1466	IF ( passive_scalar ) &
1467	s(k,j,nxlg:-1) = mean_inflow_profiles(k,7)
1468	ENDDO
1469	ENDDO
1470	ENDIF
1471
1472	!
1473	!-- Calculate the damping factors to be used at the inflow. For a
1474	!-- turbulent inflow the turbulent fluctuations have to be limited
1475	!-- vertically because otherwise the turbulent inflow layer will grow
1476	!-- in time.
1477	IF ( inflow_damping_height == 9999999.9_wp ) THEN
1478	!
1479	!-- Default: use the inversion height calculated by the prerun; if
1480	!-- this is zero, inflow_damping_height must be explicitly
1481	!-- specified.
1482	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
1483	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1484	ELSE
1485	WRITE( message_string, * ) 'inflow_damping_height must be ', &
1486	'explicitly specified because&the inversion height ', &
1487	'calculated by the prerun is zero.'
1488	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1489	ENDIF
1490
1491	ENDIF
1492
1493	IF ( inflow_damping_width == 9999999.9_wp ) THEN
1494	!
1495	!-- Default for the transition range: one tenth of the undamped
1496	!-- layer
1497	inflow_damping_width = 0.1_wp * inflow_damping_height
1498
1499	ENDIF
1500
1501	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1502
1503	DO k = nzb, nzt+1
1504
1505	IF ( zu(k) <= inflow_damping_height ) THEN
1506	inflow_damping_factor(k) = 1.0_wp
1507	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1508	inflow_damping_factor(k) = 1.0_wp - &
1509	( zu(k) - inflow_damping_height ) / &
1510	inflow_damping_width
1511	ELSE
1512	inflow_damping_factor(k) = 0.0_wp
1513	ENDIF
1514
1515	ENDDO
1516
1517	ENDIF
1518
1519	!
1520	!-- Inside buildings set velocities and TKE back to zero
1521	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1522	topography /= 'flat' ) THEN
1523	!
1524	!-- Inside buildings set velocities and TKE back to zero.
1525	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1526	!-- maybe revise later.
1527	DO i = nxlg, nxrg
1528	DO j = nysg, nyng
1529	u (nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1530	v (nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1531	w (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1532	e (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1533	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1534	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1535	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1536	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1537	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1538	ENDDO
1539	ENDDO
1540
1541	ENDIF
1542
1543	!
1544	!-- Calculate initial temperature field and other constants used in case
1545	!-- of a sloping surface
1546	IF ( sloping_surface ) CALL init_slope
1547
1548	!
1549	!-- Initialize new time levels (only done in order to set boundary values
1550	!-- including ghost points)
1551	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1552	IF ( humidity ) THEN
1553	q_p = q
1554	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1555	qr_p = qr
1556	nr_p = nr
1557	ENDIF
1558	ENDIF
1559	IF ( passive_scalar ) s_p = s
1560	IF ( ocean ) sa_p = sa
1561
1562	!
1563	!-- Allthough tendency arrays are set in prognostic_equations, they have
1564	!-- have to be predefined here because they are used (but multiplied with 0)
1565	!-- there before they are set.
1566	te_m = 0.0_wp; tpt_m = 0.0_wp; tu_m = 0.0_wp; tv_m = 0.0_wp; tw_m = 0.0_wp
1567	IF ( humidity ) THEN
1568	tq_m = 0.0_wp
1569	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1570	tqr_m = 0.0_wp
1571	tnr_m = 0.0_wp
1572	ENDIF
1573	ENDIF
1574	IF ( passive_scalar ) ts_m = 0.0_wp
1575	IF ( ocean ) tsa_m = 0.0_wp
1576
1577	CALL location_message( 'finished', .TRUE. )
1578
1579	ELSE
1580	!
1581	!-- Actually this part of the programm should not be reached
1582	message_string = 'unknown initializing problem'
1583	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1584	ENDIF
1585
1586
1587	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1588	!
1589	!-- Initialize old timelevels needed for radiation boundary conditions
1590	IF ( outflow_l ) THEN
1591	u_m_l(:,:,:) = u(:,:,1:2)
1592	v_m_l(:,:,:) = v(:,:,0:1)
1593	w_m_l(:,:,:) = w(:,:,0:1)
1594	ENDIF
1595	IF ( outflow_r ) THEN
1596	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1597	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1598	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1599	ENDIF
1600	IF ( outflow_s ) THEN
1601	u_m_s(:,:,:) = u(:,0:1,:)
1602	v_m_s(:,:,:) = v(:,1:2,:)
1603	w_m_s(:,:,:) = w(:,0:1,:)
1604	ENDIF
1605	IF ( outflow_n ) THEN
1606	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1607	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1608	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1609	ENDIF
1610
1611	ENDIF
1612
1613	!
1614	!-- Calculate the initial volume flow at the right and north boundary
1615	IF ( conserve_volume_flow ) THEN
1616
1617	IF ( use_prescribed_profile_data ) THEN
1618
1619	volume_flow_initial_l = 0.0_wp
1620	volume_flow_area_l = 0.0_wp
1621
1622	IF ( nxr == nx ) THEN
1623	DO j = nys, nyn
1624	DO k = nzb_u_inner(j,nx)+1, nzt
1625	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1626	u_init(k) * dzw(k)
1627	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1628	ENDDO
1629	ENDDO
1630	ENDIF
1631
1632	IF ( nyn == ny ) THEN
1633	DO i = nxl, nxr
1634	DO k = nzb_v_inner(ny,i)+1, nzt
1635	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1636	v_init(k) * dzw(k)
1637	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1638	ENDDO
1639	ENDDO
1640	ENDIF
1641
1642	#if defined( __parallel )
1643	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1644	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1645	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1646	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1647
1648	#else
1649	volume_flow_initial = volume_flow_initial_l
1650	volume_flow_area = volume_flow_area_l
1651	#endif
1652
1653	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1654
1655	volume_flow_initial_l = 0.0_wp
1656	volume_flow_area_l = 0.0_wp
1657
1658	IF ( nxr == nx ) THEN
1659	DO j = nys, nyn
1660	DO k = nzb_u_inner(j,nx)+1, nzt
1661	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1662	hom_sum(k,1,0) * dzw(k)
1663	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1664	ENDDO
1665	ENDDO
1666	ENDIF
1667
1668	IF ( nyn == ny ) THEN
1669	DO i = nxl, nxr
1670	DO k = nzb_v_inner(ny,i)+1, nzt
1671	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1672	hom_sum(k,2,0) * dzw(k)
1673	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1674	ENDDO
1675	ENDDO
1676	ENDIF
1677
1678	#if defined( __parallel )
1679	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1680	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1681	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1682	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1683
1684	#else
1685	volume_flow_initial = volume_flow_initial_l
1686	volume_flow_area = volume_flow_area_l
1687	#endif
1688
1689	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1690
1691	volume_flow_initial_l = 0.0_wp
1692	volume_flow_area_l = 0.0_wp
1693
1694	IF ( nxr == nx ) THEN
1695	DO j = nys, nyn
1696	DO k = nzb_u_inner(j,nx)+1, nzt
1697	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1698	u(k,j,nx) * dzw(k)
1699	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1700	ENDDO
1701	ENDDO
1702	ENDIF
1703
1704	IF ( nyn == ny ) THEN
1705	DO i = nxl, nxr
1706	DO k = nzb_v_inner(ny,i)+1, nzt
1707	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1708	v(k,ny,i) * dzw(k)
1709	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1710	ENDDO
1711	ENDDO
1712	ENDIF
1713
1714	#if defined( __parallel )
1715	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1716	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1717	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1718	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1719
1720	#else
1721	volume_flow_initial = volume_flow_initial_l
1722	volume_flow_area = volume_flow_area_l
1723	#endif
1724
1725	ENDIF
1726
1727	!
1728	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1729	!-- from u\|v_bulk instead
1730	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1731	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1732	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1733	ENDIF
1734
1735	ENDIF
1736
1737	!
1738	!-- Initialize quantities for special advections schemes
1739	CALL init_advec
1740
1741	!
1742	!-- Impose random perturbation on the horizontal velocity field and then
1743	!-- remove the divergences from the velocity field at the initial stage
1744	IF ( create_disturbances .AND. disturbance_energy_limit /= 0.0_wp .AND. &
1745	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1746	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1747
1748	CALL location_message( 'creating initial disturbances', .FALSE. )
1749	CALL disturb_field( nzb_u_inner, tend, u )
1750	CALL disturb_field( nzb_v_inner, tend, v )
1751	CALL location_message( 'finished', .TRUE. )
1752
1753	CALL location_message( 'calling pressure solver', .FALSE. )
1754	n_sor = nsor_ini
1755	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1756	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1757	!$acc copyin( weight_pres, weight_substep ) &
1758	!$acc copy( tri, tric, u, v, w )
1759	CALL pres
1760	!$acc end data
1761	n_sor = nsor
1762	CALL location_message( 'finished', .TRUE. )
1763
1764	ENDIF
1765
1766	!
1767	!-- If required, initialize quantities needed for the plant canopy model
1768	CALL location_message( 'initializing plant canopy model', .FALSE. )
1769	IF ( plant_canopy ) CALL pcm_init
1770	CALL location_message( 'finished', .TRUE. )
1771
1772	!
1773	!-- If required, initialize dvrp-software
1774	IF ( dt_dvrp /= 9999999.9_wp ) CALL init_dvrp
1775
1776	IF ( ocean ) THEN
1777	!
1778	!-- Initialize quantities needed for the ocean model
1779	CALL init_ocean
1780
1781	ELSE
1782	!
1783	!-- Initialize quantities for handling cloud physics
1784	!-- This routine must be called before lpm_init, because
1785	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1786	!-- lpm_init) is not defined.
1787	CALL init_cloud_physics
1788	!
1789	!-- Initialize bulk cloud microphysics
1790	CALL microphysics_init
1791	ENDIF
1792
1793	!
1794	!-- If required, initialize particles
1795	IF ( particle_advection ) CALL lpm_init
1796
1797	!
1798	!-- If required, initialize quantities needed for the LSM
1799	IF ( land_surface ) THEN
1800	CALL location_message( 'initializing land surface model', .FALSE. )
1801	CALL lsm_init
1802	CALL location_message( 'finished', .TRUE. )
1803	ENDIF
1804
1805	!
1806	!-- Initialize surface layer (done after LSM as roughness length are required
1807	!-- for initialization
1808	IF ( constant_flux_layer ) THEN
1809	CALL location_message( 'initializing surface layer', .FALSE. )
1810	CALL init_surface_layer_fluxes
1811	CALL location_message( 'finished', .TRUE. )
1812	ENDIF
1813
1814	!
1815	!-- If required, initialize radiation model
1816	IF ( radiation ) THEN
1817	CALL location_message( 'initializing radiation model', .FALSE. )
1818	CALL radiation_init
1819	CALL location_message( 'finished', .TRUE. )
1820	ENDIF
1821
1822	!
1823	!-- If required, initialize quantities needed for the wind turbine model
1824	IF ( wind_turbine ) THEN
1825	CALL location_message( 'initializing wind turbine model', .FALSE. )
1826	CALL wtm_init
1827	CALL location_message( 'finished', .TRUE. )
1828	ENDIF
1829
1830
1831	!
1832	!-- Initialize the ws-scheme.
1833	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1834
1835	!
1836	!-- Setting weighting factors for calculation of perturbation pressure
1837	!-- and turbulent quantities from the RK substeps
1838	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1839
1840	weight_substep(1) = 1._wp/6._wp
1841	weight_substep(2) = 3._wp/10._wp
1842	weight_substep(3) = 8._wp/15._wp
1843
1844	weight_pres(1) = 1._wp/3._wp
1845	weight_pres(2) = 5._wp/12._wp
1846	weight_pres(3) = 1._wp/4._wp
1847
1848	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1849
1850	weight_substep(1) = 1._wp/2._wp
1851	weight_substep(2) = 1._wp/2._wp
1852
1853	weight_pres(1) = 1._wp/2._wp
1854	weight_pres(2) = 1._wp/2._wp
1855
1856	ELSE ! for Euler-method
1857
1858	weight_substep(1) = 1.0_wp
1859	weight_pres(1) = 1.0_wp
1860
1861	ENDIF
1862
1863	!
1864	!-- Initialize Rayleigh damping factors
1865	rdf = 0.0_wp
1866	rdf_sc = 0.0_wp
1867	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
1868	IF ( .NOT. ocean ) THEN
1869	DO k = nzb+1, nzt
1870	IF ( zu(k) >= rayleigh_damping_height ) THEN
1871	rdf(k) = rayleigh_damping_factor * &
1872	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
1873	/ ( zu(nzt) - rayleigh_damping_height ) ) &
1874	)**2
1875	ENDIF
1876	ENDDO
1877	ELSE
1878	DO k = nzt, nzb+1, -1
1879	IF ( zu(k) <= rayleigh_damping_height ) THEN
1880	rdf(k) = rayleigh_damping_factor * &
1881	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
1882	/ ( rayleigh_damping_height - zu(nzb+1) ) ) &
1883	)**2
1884	ENDIF
1885	ENDDO
1886	ENDIF
1887	ENDIF
1888	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1889
1890	!
1891	!-- Initialize the starting level and the vertical smoothing factor used for
1892	!-- the external pressure gradient
1893	dp_smooth_factor = 1.0_wp
1894	IF ( dp_external ) THEN
1895	!
1896	!-- Set the starting level dp_level_ind_b only if it has not been set before
1897	!-- (e.g. in init_grid).
1898	IF ( dp_level_ind_b == 0 ) THEN
1899	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1900	dp_level_ind_b = ind_array(1) - 1 + nzb
1901	! MINLOC uses lower array bound 1
1902	ENDIF
1903	IF ( dp_smooth ) THEN
1904	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
1905	DO k = dp_level_ind_b+1, nzt
1906	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
1907	( REAL( k - dp_level_ind_b, KIND=wp ) / &
1908	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
1909	ENDDO
1910	ENDIF
1911	ENDIF
1912
1913	!
1914	!-- Initialize damping zone for the potential temperature in case of
1915	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1916	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1917	ptdf_x = 0.0_wp
1918	ptdf_y = 0.0_wp
1919	IF ( bc_lr_dirrad ) THEN
1920	DO i = nxl, nxr
1921	IF ( ( i * dx ) < pt_damping_width ) THEN
1922	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
1923	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
1924	REAL( pt_damping_width, KIND=wp ) ) ) )**2
1925	ENDIF
1926	ENDDO
1927	ELSEIF ( bc_lr_raddir ) THEN
1928	DO i = nxl, nxr
1929	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1930	ptdf_x(i) = pt_damping_factor * &
1931	SIN( pi * 0.5_wp * &
1932	( ( i - nx ) * dx + pt_damping_width ) / &
1933	REAL( pt_damping_width, KIND=wp ) )**2
1934	ENDIF
1935	ENDDO
1936	ELSEIF ( bc_ns_dirrad ) THEN
1937	DO j = nys, nyn
1938	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1939	ptdf_y(j) = pt_damping_factor * &
1940	SIN( pi * 0.5_wp * &
1941	( ( j - ny ) * dy + pt_damping_width ) / &
1942	REAL( pt_damping_width, KIND=wp ) )**2
1943	ENDIF
1944	ENDDO
1945	ELSEIF ( bc_ns_raddir ) THEN
1946	DO j = nys, nyn
1947	IF ( ( j * dy ) < pt_damping_width ) THEN
1948	ptdf_y(j) = pt_damping_factor * &
1949	SIN( pi * 0.5_wp * &
1950	( pt_damping_width - j * dy ) / &
1951	REAL( pt_damping_width, KIND=wp ) )**2
1952	ENDIF
1953	ENDDO
1954	ENDIF
1955
1956	!
1957	!-- Pre-set masks for regional statistics. Default is the total model domain.
1958	!-- Ghost points are excluded because counting values at the ghost boundaries
1959	!-- would bias the statistics
1960	rmask = 1.0_wp
1961	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
1962	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
1963
1964	!
1965	!-- User-defined initializing actions. Check afterwards, if maximum number
1966	!-- of allowed timeseries is exceeded
1967	CALL user_init
1968
1969	IF ( dots_num > dots_max ) THEN
1970	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1971	' its maximum of dots_max = ', dots_max, &
1972	' &Please increase dots_max in modules.f90.'
1973	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1974	ENDIF
1975
1976	!
1977	!-- Input binary data file is not needed anymore. This line must be placed
1978	!-- after call of user_init!
1979	CALL close_file( 13 )
1980
1981	!
1982	!-- Compute total sum of active mask grid points
1983	!-- and the mean surface level height for each statistic region
1984	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1985	!-- total domain
1986	!-- ngp_3d: number of grid points of the total domain
1987	ngp_2dh_outer_l = 0
1988	ngp_2dh_outer = 0
1989	ngp_2dh_s_inner_l = 0
1990	ngp_2dh_s_inner = 0
1991	ngp_2dh_l = 0
1992	ngp_2dh = 0
1993	ngp_3d_inner_l = 0.0_wp
1994	ngp_3d_inner = 0
1995	ngp_3d = 0
1996	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1997
1998	mean_surface_level_height = 0.0_wp
1999	mean_surface_level_height_l = 0.0_wp
2000
2001	DO sr = 0, statistic_regions
2002	DO i = nxl, nxr
2003	DO j = nys, nyn
2004	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
2005	!
2006	!-- All xy-grid points
2007	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
2008	mean_surface_level_height_l(sr) = mean_surface_level_height_l(sr) &
2009	+ zw(nzb_s_inner(j,i))
2010	!
2011	!-- xy-grid points above topography
2012	DO k = nzb_s_outer(j,i), nz + 1
2013	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
2014	ENDDO
2015	DO k = nzb_s_inner(j,i), nz + 1
2016	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
2017	ENDDO
2018	!
2019	!-- All grid points of the total domain above topography
2020	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) &
2021	+ ( nz - nzb_s_inner(j,i) + 2 )
2022	ENDIF
2023	ENDDO
2024	ENDDO
2025	ENDDO
2026
2027	sr = statistic_regions + 1
2028	#if defined( __parallel )
2029	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2030	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
2031	comm2d, ierr )
2032	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2033	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
2034	MPI_INTEGER, MPI_SUM, comm2d, ierr )
2035	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2036	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
2037	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
2038	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2039	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
2040	MPI_SUM, comm2d, ierr )
2041	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
2042	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2043	CALL MPI_ALLREDUCE( mean_surface_level_height_l(0), &
2044	mean_surface_level_height(0), sr, MPI_REAL, &
2045	MPI_SUM, comm2d, ierr )
2046	mean_surface_level_height = mean_surface_level_height / REAL( ngp_2dh )
2047	#else
2048	ngp_2dh = ngp_2dh_l
2049	ngp_2dh_outer = ngp_2dh_outer_l
2050	ngp_2dh_s_inner = ngp_2dh_s_inner_l
2051	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
2052	mean_surface_level_height = mean_surface_level_height_l / REAL( ngp_2dh_l )
2053	#endif
2054
2055	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
2056	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
2057
2058	!
2059	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
2060	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
2061	!-- the respective subdomain lie below the surface topography
2062	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
2063	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
2064	ngp_3d_inner(:) )
2065	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
2066
2067	DEALLOCATE( mean_surface_level_height_l, ngp_2dh_l, ngp_2dh_outer_l, &
2068	ngp_3d_inner_l, ngp_3d_inner_tmp )
2069
2070	CALL location_message( 'leaving init_3d_model', .TRUE. )
2071
2072	END SUBROUTINE init_3d_model

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