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source: palm/trunk/SOURCE/init_3d_model.f90 @ 2337

Last change on this file since 2337 was 2329, checked in by knoop, 7 years ago

Bugfix for topography usage with anelastic approximation and boussinesq approximation with air density != 1

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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 1997-2017 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! ------------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: init_3d_model.f90 2329 2017-08-03 14:24:56Z gronemeier $
27	! Removed temporary bugfix (r2327) as bug is properly resolved by this revision
28	!
29	! 2327 2017-08-02 07:40:57Z maronga
30	! Temporary bugfix
31	!
32	! 2320 2017-07-21 12:47:43Z suehring
33	! Modularize large-scale forcing and nudging
34	!
35	! 2292 2017-06-20 09:51:42Z schwenkel
36	! Implementation of new microphysic scheme: cloud_scheme = 'morrison'
37	! includes two more prognostic equations for cloud drop concentration (nc)
38	! and cloud water content (qc).
39	!
40	! 2277 2017-06-12 10:47:51Z kanani
41	! Removed unused variable sums_up_fraction_l
42	!
43	! 2270 2017-06-09 12:18:47Z maronga
44	! dots_num must be increased when LSM and/or radiation is used
45	!
46	! 2259 2017-06-08 09:09:11Z gronemeier
47	! Implemented synthetic turbulence generator
48	!
49	! 2252 2017-06-07 09:35:37Z knoop
50	! rho_air now depending on surface_pressure even in Boussinesq mode
51	!
52	! 2233 2017-05-30 18:08:54Z suehring
53	!
54	! 2232 2017-05-30 17:47:52Z suehring
55	! Adjustments to new topography and surface concept:
56	! - Modify passed parameters for disturb_field
57	! - Topography representation via flags
58	! - Remove unused arrays.
59	! - Move initialization of surface-related quantities to surface_mod
60	!
61	! 2172 2017-03-08 15:55:25Z knoop
62	! Bugfix: moved parallel random generator initialization into its module
63	!
64	! 2118 2017-01-17 16:38:49Z raasch
65	! OpenACC directives removed
66	!
67	! 2037 2016-10-26 11:15:40Z knoop
68	! Anelastic approximation implemented
69	!
70	! 2031 2016-10-21 15:11:58Z knoop
71	! renamed variable rho to rho_ocean
72	!
73	! 2011 2016-09-19 17:29:57Z kanani
74	! Flag urban_surface is now defined in module control_parameters.
75	!
76	! 2007 2016-08-24 15:47:17Z kanani
77	! Added support for urban surface model,
78	! adjusted location_message in case of plant_canopy
79	!
80	! 2000 2016-08-20 18:09:15Z knoop
81	! Forced header and separation lines into 80 columns
82	!
83	! 1992 2016-08-12 15:14:59Z suehring
84	! Initializaton of scalarflux at model top
85	! Bugfixes in initialization of surface and top salinity flux, top scalar and
86	! humidity fluxes
87	!
88	! 1960 2016-07-12 16:34:24Z suehring
89	! Separate humidity and passive scalar
90	! Increase dimension for mean_inflow_profiles
91	! Remove inadvertent write-statement
92	! Bugfix, large-scale forcing is still not implemented for passive scalars
93	!
94	! 1957 2016-07-07 10:43:48Z suehring
95	! flight module added
96	!
97	! 1920 2016-05-30 10:50:15Z suehring
98	! Initialize us with very small number to avoid segmentation fault during
99	! calculation of Obukhov length
100	!
101	! 1918 2016-05-27 14:35:57Z raasch
102	! intermediate_timestep_count is set 0 instead 1 for first call of pres,
103	! bugfix: initialization of local sum arrays are moved to the beginning of the
104	! routine because otherwise results from pres are overwritten
105	!
106	! 1914 2016-05-26 14:44:07Z witha
107	! Added initialization of the wind turbine model
108	!
109	! 1878 2016-04-19 12:30:36Z hellstea
110	! The zeroth element of weight_pres removed as unnecessary
111	!
112	! 1849 2016-04-08 11:33:18Z hoffmann
113	! Adapted for modularization of microphysics.
114	! precipitation_amount, precipitation_rate, prr moved to arrays_3d.
115	! Initialization of nc_1d, nr_1d, pt_1d, qc_1d, qr_1d, q_1d moved to
116	! microphysics_init.
117	!
118	! 1845 2016-04-08 08:29:13Z raasch
119	! nzb_2d replaced by nzb_u\|v_inner
120	!
121	! 1833 2016-04-07 14:23:03Z raasch
122	! initialization of spectra quantities moved to spectra_mod
123	!
124	! 1831 2016-04-07 13:15:51Z hoffmann
125	! turbulence renamed collision_turbulence
126	!
127	! 1826 2016-04-07 12:01:39Z maronga
128	! Renamed radiation calls.
129	! Renamed canopy model calls.
130	!
131	! 1822 2016-04-07 07:49:42Z hoffmann
132	! icloud_scheme replaced by microphysics_*
133	!
134	! 1817 2016-04-06 15:44:20Z maronga
135	! Renamed lsm calls.
136	!
137	! 1815 2016-04-06 13:49:59Z raasch
138	! zero-settings for velocities inside topography re-activated (was deactivated
139	! in r1762)
140	!
141	! 1788 2016-03-10 11:01:04Z maronga
142	! Added z0q.
143	! Syntax layout improved.
144	!
145	! 1783 2016-03-06 18:36:17Z raasch
146	! netcdf module name changed + related changes
147	!
148	! 1764 2016-02-28 12:45:19Z raasch
149	! bugfix: increase size of volume_flow_area_l and volume_flow_initial_l by 1
150	!
151	! 1762 2016-02-25 12:31:13Z hellstea
152	! Introduction of nested domain feature
153	!
154	! 1738 2015-12-18 13:56:05Z raasch
155	! calculate mean surface level height for each statistic region
156	!
157	! 1734 2015-12-02 12:17:12Z raasch
158	! no initial disturbances in case that the disturbance energy limit has been
159	! set zero
160	!
161	! 1707 2015-11-02 15:24:52Z maronga
162	! Bugfix: transfer of Richardson number from 1D model to Obukhov length caused
163	! devision by zero in neutral stratification
164	!
165	! 1691 2015-10-26 16:17:44Z maronga
166	! Call to init_surface_layer added. rif is replaced by ol and zeta.
167	!
168	! 1682 2015-10-07 23:56:08Z knoop
169	! Code annotations made doxygen readable
170	!
171	! 1615 2015-07-08 18:49:19Z suehring
172	! Enable turbulent inflow for passive_scalar and humidity
173	!
174	! 1585 2015-04-30 07:05:52Z maronga
175	! Initialization of radiation code is now done after LSM initializtion
176	!
177	! 1575 2015-03-27 09:56:27Z raasch
178	! adjustments for psolver-queries
179	!
180	! 1551 2015-03-03 14:18:16Z maronga
181	! Allocation of land surface arrays is now done in the subroutine lsm_init_arrays,
182	! which is part of land_surface_model.
183	!
184	! 1507 2014-12-10 12:14:18Z suehring
185	! Bugfix: set horizontal velocity components to zero inside topography
186	!
187	! 1496 2014-12-02 17:25:50Z maronga
188	! Added initialization of the land surface and radiation schemes
189	!
190	! 1484 2014-10-21 10:53:05Z kanani
191	! Changes due to new module structure of the plant canopy model:
192	! canopy-related initialization (e.g. lad and canopy_heat_flux) moved to new
193	! subroutine init_plant_canopy within the module plant_canopy_model_mod,
194	! call of subroutine init_plant_canopy added.
195	!
196	! 1431 2014-07-15 14:47:17Z suehring
197	! var_d added, in order to normalize spectra.
198	!
199	! 1429 2014-07-15 12:53:45Z knoop
200	! Ensemble run capability added to parallel random number generator
201	!
202	! 1411 2014-05-16 18:01:51Z suehring
203	! Initial horizontal velocity profiles were not set to zero at the first vertical
204	! grid level in case of non-cyclic lateral boundary conditions.
205	!
206	! 1406 2014-05-16 13:47:01Z raasch
207	! bugfix: setting of initial velocities at k=1 to zero not in case of a
208	! no-slip boundary condition for uv
209	!
210	! 1402 2014-05-09 14:25:13Z raasch
211	! location messages modified
212	!
213	! 1400 2014-05-09 14:03:54Z knoop
214	! Parallel random number generator added
215	!
216	! 1384 2014-05-02 14:31:06Z raasch
217	! location messages added
218	!
219	! 1361 2014-04-16 15:17:48Z hoffmann
220	! tend_* removed
221	! Bugfix: w_subs is not allocated anymore if it is already allocated
222	!
223	! 1359 2014-04-11 17:15:14Z hoffmann
224	! module lpm_init_mod added to use statements, because lpm_init has become a
225	! module
226	!
227	! 1353 2014-04-08 15:21:23Z heinze
228	! REAL constants provided with KIND-attribute
229	!
230	! 1340 2014-03-25 19:45:13Z kanani
231	! REAL constants defined as wp-kind
232	!
233	! 1322 2014-03-20 16:38:49Z raasch
234	! REAL constants defined as wp-kind
235	! module interfaces removed
236	!
237	! 1320 2014-03-20 08:40:49Z raasch
238	! ONLY-attribute added to USE-statements,
239	! kind-parameters added to all INTEGER and REAL declaration statements,
240	! kinds are defined in new module kinds,
241	! revision history before 2012 removed,
242	! comment fields (!:) to be used for variable explanations added to
243	! all variable declaration statements
244	!
245	! 1316 2014-03-17 07:44:59Z heinze
246	! Bugfix: allocation of w_subs
247	!
248	! 1299 2014-03-06 13:15:21Z heinze
249	! Allocate w_subs due to extension of large scale subsidence in combination
250	! with large scale forcing data (LSF_DATA)
251	!
252	! 1241 2013-10-30 11:36:58Z heinze
253	! Overwrite initial profiles in case of nudging
254	! Inititialize shf and qsws in case of large_scale_forcing
255	!
256	! 1221 2013-09-10 08:59:13Z raasch
257	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
258	! copy
259	!
260	! 1212 2013-08-15 08:46:27Z raasch
261	! array tri is allocated and included in data copy statement
262	!
263	! 1195 2013-07-01 12:27:57Z heinze
264	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
265	!
266	! 1179 2013-06-14 05:57:58Z raasch
267	! allocate and set ref_state to be used in buoyancy terms
268	!
269	! 1171 2013-05-30 11:27:45Z raasch
270	! diss array is allocated with full size if accelerator boards are used
271	!
272	! 1159 2013-05-21 11:58:22Z fricke
273	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
274	!
275	! 1153 2013-05-10 14:33:08Z raasch
276	! diss array is allocated with dummy elements even if it is not needed
277	! (required by PGI 13.4 / CUDA 5.0)
278	!
279	! 1115 2013-03-26 18:16:16Z hoffmann
280	! unused variables removed
281	!
282	! 1113 2013-03-10 02:48:14Z raasch
283	! openACC directive modified
284	!
285	! 1111 2013-03-08 23:54:10Z raasch
286	! openACC directives added for pres
287	! array diss allocated only if required
288	!
289	! 1092 2013-02-02 11:24:22Z raasch
290	! unused variables removed
291	!
292	! 1065 2012-11-22 17:42:36Z hoffmann
293	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
294	!
295	! 1053 2012-11-13 17:11:03Z hoffmann
296	! allocation and initialisation of necessary data arrays for the two-moment
297	! cloud physics scheme the two new prognostic equations (nr, qr):
298	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
299	! +tend_*, prr
300	!
301	! 1036 2012-10-22 13:43:42Z raasch
302	! code put under GPL (PALM 3.9)
303	!
304	! 1032 2012-10-21 13:03:21Z letzel
305	! save memory by not allocating pt_2 in case of neutral = .T.
306	!
307	! 1025 2012-10-07 16:04:41Z letzel
308	! bugfix: swap indices of mask for ghost boundaries
309	!
310	! 1015 2012-09-27 09:23:24Z raasch
311	! mask is set to zero for ghost boundaries
312	!
313	! 1010 2012-09-20 07:59:54Z raasch
314	! cpp switch __nopointer added for pointer free version
315	!
316	! 1003 2012-09-14 14:35:53Z raasch
317	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
318	!
319	! 1001 2012-09-13 14:08:46Z raasch
320	! all actions concerning leapfrog scheme removed
321	!
322	! 996 2012-09-07 10:41:47Z raasch
323	! little reformatting
324	!
325	! 978 2012-08-09 08:28:32Z fricke
326	! outflow damping layer removed
327	! roughness length for scalar quantites z0h added
328	! damping zone for the potential temperatur in case of non-cyclic lateral
329	! boundaries added
330	! initialization of ptdf_x, ptdf_y
331	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
332	!
333	! 849 2012-03-15 10:35:09Z raasch
334	! init_particles renamed lpm_init
335	!
336	! 825 2012-02-19 03:03:44Z raasch
337	! wang_collision_kernel renamed wang_kernel
338	!
339	! Revision 1.1 1998/03/09 16:22:22 raasch
340	! Initial revision
341	!
342	!
343	! Description:
344	! ------------
345	!> Allocation of arrays and initialization of the 3D model via
346	!> a) pre-run the 1D model
347	!> or
348	!> b) pre-set constant linear profiles
349	!> or
350	!> c) read values of a previous run
351	!------------------------------------------------------------------------------!
352	SUBROUTINE init_3d_model
353
354
355	USE advec_ws
356
357	USE arrays_3d
358
359	USE cloud_parameters, &
360	ONLY: cp, l_v, r_d
361
362	USE constants, &
363	ONLY: pi
364
365	USE control_parameters
366
367	USE flight_mod, &
368	ONLY: flight_init
369
370	USE grid_variables, &
371	ONLY: dx, dy, ddx2_mg, ddy2_mg
372
373	USE indices
374
375	USE lpm_init_mod, &
376	ONLY: lpm_init
377
378	USE kinds
379
380	USE land_surface_model_mod, &
381	ONLY: lsm_init, lsm_init_arrays
382
383	USE lsf_nudging_mod, &
384	ONLY: lsf_init, ls_forcing_surf, nudge_init
385
386	USE microphysics_mod, &
387	ONLY: collision_turbulence, microphysics_init
388
389	USE model_1d, &
390	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
391
392	USE netcdf_interface, &
393	ONLY: dots_max, dots_num
394
395	USE particle_attributes, &
396	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
397
398	USE pegrid
399
400	USE plant_canopy_model_mod, &
401	ONLY: pcm_init, plant_canopy
402
403	USE radiation_model_mod, &
404	ONLY: radiation_init, radiation, radiation_scheme
405
406	USE random_function_mod
407
408	USE random_generator_parallel, &
409	ONLY: init_parallel_random_generator
410
411	USE statistics, &
412	ONLY: hom, hom_sum, mean_surface_level_height, pr_palm, rmask, &
413	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
414	sums_l_l, sums_wsts_bc_l, ts_value, &
415	weight_pres, weight_substep
416
417	USE synthetic_turbulence_generator_mod, &
418	ONLY: stg_init, use_synthetic_turbulence_generator
419
420	USE surface_layer_fluxes_mod, &
421	ONLY: init_surface_layer_fluxes
422
423	USE surface_mod, &
424	ONLY : init_surface_arrays, init_surfaces, surf_def_h, surf_lsm_h, &
425	surf_usm_h
426
427	USE transpose_indices
428
429	USE urban_surface_mod, &
430	ONLY: usm_init_urban_surface
431
432	USE wind_turbine_model_mod, &
433	ONLY: wtm_init, wtm_init_arrays, wind_turbine
434
435	IMPLICIT NONE
436
437	INTEGER(iwp) :: i !<
438	INTEGER(iwp) :: ind_array(1) !<
439	INTEGER(iwp) :: j !<
440	INTEGER(iwp) :: k !<
441	INTEGER(iwp) :: k_surf !< surface level index
442	INTEGER(iwp) :: m !< index of surface element in surface data type
443	INTEGER(iwp) :: sr !< index of statistic region
444
445	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !<
446
447	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !<
448	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !<
449
450	REAL(wp) :: t_surface !< air temperature at the surface
451
452	REAL(wp), DIMENSION(:), ALLOCATABLE :: p_hydrostatic !< hydrostatic pressure
453
454	INTEGER(iwp) :: l !< loop variable
455	INTEGER(iwp) :: nzt_l !< index of top PE boundary for multigrid level
456	REAL(wp) :: dx_l !< grid spacing along x on different multigrid level
457	REAL(wp) :: dy_l !< grid spacing along y on different multigrid level
458
459	REAL(wp), DIMENSION(1:3) :: volume_flow_area_l !<
460	REAL(wp), DIMENSION(1:3) :: volume_flow_initial_l !<
461
462	REAL(wp), DIMENSION(:), ALLOCATABLE :: mean_surface_level_height_l !<
463	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !<
464	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !<
465
466
467	CALL location_message( 'allocating arrays', .FALSE. )
468	!
469	!-- Allocate arrays
470	ALLOCATE( mean_surface_level_height(0:statistic_regions), &
471	mean_surface_level_height_l(0:statistic_regions), &
472	ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
473	ngp_3d(0:statistic_regions), &
474	ngp_3d_inner(0:statistic_regions), &
475	ngp_3d_inner_l(0:statistic_regions), &
476	ngp_3d_inner_tmp(0:statistic_regions), &
477	sums_divnew_l(0:statistic_regions), &
478	sums_divold_l(0:statistic_regions) )
479	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
480	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
481	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
482	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
483	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
484	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
485	sums(nzb:nzt+1,pr_palm+max_pr_user), &
486	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
487	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
488	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
489	ts_value(dots_max,0:statistic_regions) )
490	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
491
492	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
493	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
494	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
495	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
496	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
497
498	#if defined( __nopointer )
499	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
500	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
501	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
502	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
503	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
504	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
505	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
506	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
507	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
508	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
509	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
510	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
511	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
512	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
513	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
514	#else
515	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
516	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
517	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
518	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
519	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
520	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
521	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
522	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
523	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
524	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
525	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
526	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
527	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
528	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
529	IF ( .NOT. neutral ) THEN
530	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
531	ENDIF
532	#endif
533
534	!
535	!-- Following array is required for perturbation pressure within the iterative
536	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
537	!-- the weighted average of the substeps and cannot be used in the Poisson
538	!-- solver.
539	IF ( psolver == 'sor' ) THEN
540	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
541	ELSEIF ( psolver(1:9) == 'multigrid' ) THEN
542	!
543	!-- For performance reasons, multigrid is using one ghost layer only
544	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
545	ENDIF
546
547	!
548	!-- Array for storing constant coeffficients of the tridiagonal solver
549	IF ( psolver == 'poisfft' ) THEN
550	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
551	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
552	ENDIF
553
554	IF ( humidity ) THEN
555	!
556	!-- 3D-humidity
557	#if defined( __nopointer )
558	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
559	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
560	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
561	#else
562	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
563	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
564	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
565	#endif
566
567	!
568	!-- 3D-arrays needed for humidity
569	IF ( humidity ) THEN
570	#if defined( __nopointer )
571	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
572	#else
573	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
574	#endif
575
576	IF ( cloud_physics ) THEN
577	!
578	!-- Liquid water content
579	#if defined( __nopointer )
580	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
581	#else
582	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
583	#endif
584
585	!
586	!-- 3D-cloud water content
587	IF ( .NOT. microphysics_morrison ) THEN
588	#if defined( __nopointer )
589	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
590	#else
591	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
592	#endif
593	ENDIF
594	!
595	!-- Precipitation amount and rate (only needed if output is switched)
596	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
597	precipitation_rate(nysg:nyng,nxlg:nxrg) )
598
599	!
600	!-- 3d-precipitation rate
601	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
602
603	IF ( microphysics_morrison ) THEN
604	!
605	!-- 3D-cloud drop water content, cloud drop concentration arrays
606	#if defined( __nopointer )
607	ALLOCATE( nc(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
608	nc_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
609	qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
610	qc_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
611	tnc_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg)
612	tqc_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
613	#else
614	ALLOCATE( nc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
615	nc_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
616	nc_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
617	qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
618	qc_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
619	qc_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
620	#endif
621	ENDIF
622
623	IF ( microphysics_seifert ) THEN
624	!
625	!-- 3D-rain water content, rain drop concentration arrays
626	#if defined( __nopointer )
627	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
628	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
629	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
630	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
631	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
632	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
633	#else
634	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
635	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
636	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
637	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
638	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
639	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
640	#endif
641	ENDIF
642
643	ENDIF
644
645	IF ( cloud_droplets ) THEN
646	!
647	!-- Liquid water content, change in liquid water content
648	#if defined( __nopointer )
649	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
650	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
651	#else
652	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
653	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
654	#endif
655	!
656	!-- Real volume of particles (with weighting), volume of particles
657	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
658	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
659	ENDIF
660
661	ENDIF
662
663	ENDIF
664
665
666	IF ( passive_scalar ) THEN
667
668	!
669	!-- 3D scalar arrays
670	#if defined( __nopointer )
671	ALLOCATE( s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
672	s_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
673	ts_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
674	#else
675	ALLOCATE( s_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
676	s_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
677	s_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
678	#endif
679	ENDIF
680
681	IF ( ocean ) THEN
682	#if defined( __nopointer )
683	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
684	rho_ocean(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
685	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
686	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
687	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
688	#else
689	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
690	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
691	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
692	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
693	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
694	prho => prho_1
695	rho_ocean => rho_1 ! routines calc_mean_profile and diffusion_e require
696	! density to be apointer
697	#endif
698	ENDIF
699
700	!
701	!-- Allocation of anelastic and Boussinesq approximation specific arrays
702	ALLOCATE( p_hydrostatic(nzb:nzt+1) )
703	ALLOCATE( rho_air(nzb:nzt+1) )
704	ALLOCATE( rho_air_zw(nzb:nzt+1) )
705	ALLOCATE( drho_air(nzb:nzt+1) )
706	ALLOCATE( drho_air_zw(nzb:nzt+1) )
707
708	!
709	!-- Density profile calculation for anelastic approximation
710	t_surface = pt_surface * ( surface_pressure / 1000.0_wp )**( r_d / cp )
711	IF ( TRIM( approximation ) == 'anelastic' ) THEN
712	DO k = nzb, nzt+1
713	p_hydrostatic(k) = surface_pressure * 100.0_wp * &
714	( 1 - ( g * zu(k) ) / ( cp * t_surface ) &
715	)**( cp / r_d )
716	rho_air(k) = ( p_hydrostatic(k) * &
717	( 100000.0_wp / p_hydrostatic(k) &
718	)**( r_d / cp ) &
719	) / ( r_d * pt_init(k) )
720	ENDDO
721	DO k = nzb, nzt
722	rho_air_zw(k) = 0.5_wp * ( rho_air(k) + rho_air(k+1) )
723	ENDDO
724	rho_air_zw(nzt+1) = rho_air_zw(nzt) &
725	+ 2.0_wp * ( rho_air(nzt+1) - rho_air_zw(nzt) )
726	ELSE
727	DO k = nzb, nzt+1
728	p_hydrostatic(k) = surface_pressure * 100.0_wp * &
729	( 1 - ( g * zu(nzb) ) / ( cp * t_surface ) &
730	)**( cp / r_d )
731	rho_air(k) = ( p_hydrostatic(k) * &
732	( 100000.0_wp / p_hydrostatic(k) &
733	)**( r_d / cp ) &
734	) / ( r_d * pt_init(nzb) )
735	ENDDO
736	DO k = nzb, nzt
737	rho_air_zw(k) = 0.5_wp * ( rho_air(k) + rho_air(k+1) )
738	ENDDO
739	rho_air_zw(nzt+1) = rho_air_zw(nzt) &
740	+ 2.0_wp * ( rho_air(nzt+1) - rho_air_zw(nzt) )
741	ENDIF
742
743	!-- compute the inverse density array in order to avoid expencive divisions
744	drho_air = 1.0_wp / rho_air
745	drho_air_zw = 1.0_wp / rho_air_zw
746
747	!
748	!-- Allocation of flux conversion arrays
749	ALLOCATE( heatflux_input_conversion(nzb:nzt+1) )
750	ALLOCATE( waterflux_input_conversion(nzb:nzt+1) )
751	ALLOCATE( momentumflux_input_conversion(nzb:nzt+1) )
752	ALLOCATE( heatflux_output_conversion(nzb:nzt+1) )
753	ALLOCATE( waterflux_output_conversion(nzb:nzt+1) )
754	ALLOCATE( momentumflux_output_conversion(nzb:nzt+1) )
755
756	!
757	!-- calculate flux conversion factors according to approximation and in-/output mode
758	DO k = nzb, nzt+1
759
760	IF ( TRIM( flux_input_mode ) == 'kinematic' ) THEN
761	heatflux_input_conversion(k) = rho_air_zw(k)
762	waterflux_input_conversion(k) = rho_air_zw(k)
763	momentumflux_input_conversion(k) = rho_air_zw(k)
764	ELSEIF ( TRIM( flux_input_mode ) == 'dynamic' ) THEN
765	heatflux_input_conversion(k) = 1.0_wp / cp
766	waterflux_input_conversion(k) = 1.0_wp / l_v
767	momentumflux_input_conversion(k) = 1.0_wp
768	ENDIF
769
770	IF ( TRIM( flux_output_mode ) == 'kinematic' ) THEN
771	heatflux_output_conversion(k) = drho_air_zw(k)
772	waterflux_output_conversion(k) = drho_air_zw(k)
773	momentumflux_output_conversion(k) = drho_air_zw(k)
774	ELSEIF ( TRIM( flux_output_mode ) == 'dynamic' ) THEN
775	heatflux_output_conversion(k) = cp
776	waterflux_output_conversion(k) = l_v
777	momentumflux_output_conversion(k) = 1.0_wp
778	ENDIF
779
780	IF ( .NOT. humidity ) THEN
781	waterflux_input_conversion(k) = 1.0_wp
782	waterflux_output_conversion(k) = 1.0_wp
783	ENDIF
784
785	ENDDO
786
787	!
788	!-- In case of multigrid method, compute grid lengths and grid factors for the
789	!-- grid levels with respective density on each grid
790	IF ( psolver(1:9) == 'multigrid' ) THEN
791
792	ALLOCATE( ddx2_mg(maximum_grid_level) )
793	ALLOCATE( ddy2_mg(maximum_grid_level) )
794	ALLOCATE( dzu_mg(nzb+1:nzt+1,maximum_grid_level) )
795	ALLOCATE( dzw_mg(nzb+1:nzt+1,maximum_grid_level) )
796	ALLOCATE( f1_mg(nzb+1:nzt,maximum_grid_level) )
797	ALLOCATE( f2_mg(nzb+1:nzt,maximum_grid_level) )
798	ALLOCATE( f3_mg(nzb+1:nzt,maximum_grid_level) )
799	ALLOCATE( rho_air_mg(nzb:nzt+1,maximum_grid_level) )
800	ALLOCATE( rho_air_zw_mg(nzb:nzt+1,maximum_grid_level) )
801
802	dzu_mg(:,maximum_grid_level) = dzu
803	rho_air_mg(:,maximum_grid_level) = rho_air
804	!
805	!-- Next line to ensure an equally spaced grid.
806	dzu_mg(1,maximum_grid_level) = dzu(2)
807	rho_air_mg(nzb,maximum_grid_level) = rho_air(nzb) + &
808	(rho_air(nzb) - rho_air(nzb+1))
809
810	dzw_mg(:,maximum_grid_level) = dzw
811	rho_air_zw_mg(:,maximum_grid_level) = rho_air_zw
812	nzt_l = nzt
813	DO l = maximum_grid_level-1, 1, -1
814	dzu_mg(nzb+1,l) = 2.0_wp * dzu_mg(nzb+1,l+1)
815	dzw_mg(nzb+1,l) = 2.0_wp * dzw_mg(nzb+1,l+1)
816	rho_air_mg(nzb,l) = rho_air_mg(nzb,l+1) + (rho_air_mg(nzb,l+1) - rho_air_mg(nzb+1,l+1))
817	rho_air_zw_mg(nzb,l) = rho_air_zw_mg(nzb,l+1) + (rho_air_zw_mg(nzb,l+1) - rho_air_zw_mg(nzb+1,l+1))
818	rho_air_mg(nzb+1,l) = rho_air_mg(nzb+1,l+1)
819	rho_air_zw_mg(nzb+1,l) = rho_air_zw_mg(nzb+1,l+1)
820	nzt_l = nzt_l / 2
821	DO k = 2, nzt_l+1
822	dzu_mg(k,l) = dzu_mg(2k-2,l+1) + dzu_mg(2k-1,l+1)
823	dzw_mg(k,l) = dzw_mg(2k-2,l+1) + dzw_mg(2k-1,l+1)
824	rho_air_mg(k,l) = rho_air_mg(2*k-1,l+1)
825	rho_air_zw_mg(k,l) = rho_air_zw_mg(2*k-1,l+1)
826	ENDDO
827	ENDDO
828
829	nzt_l = nzt
830	dx_l = dx
831	dy_l = dy
832	DO l = maximum_grid_level, 1, -1
833	ddx2_mg(l) = 1.0_wp / dx_l**2
834	ddy2_mg(l) = 1.0_wp / dy_l**2
835	DO k = nzb+1, nzt_l
836	f2_mg(k,l) = rho_air_zw_mg(k,l) / ( dzu_mg(k+1,l) * dzw_mg(k,l) )
837	f3_mg(k,l) = rho_air_zw_mg(k-1,l) / ( dzu_mg(k,l) * dzw_mg(k,l) )
838	f1_mg(k,l) = 2.0_wp * ( ddx2_mg(l) + ddy2_mg(l) ) &
839	* rho_air_mg(k,l) + f2_mg(k,l) + f3_mg(k,l)
840	ENDDO
841	nzt_l = nzt_l / 2
842	dx_l = dx_l * 2.0_wp
843	dy_l = dy_l * 2.0_wp
844	ENDDO
845
846	ENDIF
847
848	!
849	!-- 3D-array for storing the dissipation, needed for calculating the sgs
850	!-- particle velocities
851	IF ( use_sgs_for_particles .OR. wang_kernel .OR. collision_turbulence )&
852	THEN
853	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
854	ENDIF
855
856	!
857	!-- 1D-array for large scale subsidence velocity
858	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
859	ALLOCATE ( w_subs(nzb:nzt+1) )
860	w_subs = 0.0_wp
861	ENDIF
862
863	!
864	!-- Arrays to store velocity data from t-dt and the phase speeds which
865	!-- are needed for radiation boundary conditions
866	IF ( outflow_l ) THEN
867	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
868	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
869	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
870	ENDIF
871	IF ( outflow_r ) THEN
872	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
873	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
874	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
875	ENDIF
876	IF ( outflow_l .OR. outflow_r ) THEN
877	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
878	c_w(nzb:nzt+1,nysg:nyng) )
879	ENDIF
880	IF ( outflow_s ) THEN
881	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
882	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
883	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
884	ENDIF
885	IF ( outflow_n ) THEN
886	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
887	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
888	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
889	ENDIF
890	IF ( outflow_s .OR. outflow_n ) THEN
891	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
892	c_w(nzb:nzt+1,nxlg:nxrg) )
893	ENDIF
894	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
895	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
896	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
897	ENDIF
898
899
900	#if ! defined( __nopointer )
901	!
902	!-- Initial assignment of the pointers
903	e => e_1; e_p => e_2; te_m => e_3
904	IF ( .NOT. neutral ) THEN
905	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
906	ELSE
907	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
908	ENDIF
909	u => u_1; u_p => u_2; tu_m => u_3
910	v => v_1; v_p => v_2; tv_m => v_3
911	w => w_1; w_p => w_2; tw_m => w_3
912
913	IF ( humidity ) THEN
914	q => q_1; q_p => q_2; tq_m => q_3
915	IF ( humidity ) THEN
916	vpt => vpt_1
917	IF ( cloud_physics ) THEN
918	ql => ql_1
919	IF ( .NOT. microphysics_morrison ) THEN
920	qc => qc_1
921	ENDIF
922	IF ( microphysics_morrison ) THEN
923	qc => qc_1; qc_p => qc_2; tqc_m => qc_3
924	nc => nc_1; nc_p => nc_2; tnc_m => nc_3
925	ENDIF
926	IF ( microphysics_seifert ) THEN
927	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
928	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
929	ENDIF
930	ENDIF
931	ENDIF
932	IF ( cloud_droplets ) THEN
933	ql => ql_1
934	ql_c => ql_2
935	ENDIF
936	ENDIF
937
938	IF ( passive_scalar ) THEN
939	s => s_1; s_p => s_2; ts_m => s_3
940	ENDIF
941
942	IF ( ocean ) THEN
943	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
944	ENDIF
945	#endif
946	!
947	!-- Initialize wall arrays
948	CALL init_surface_arrays
949	!
950	!-- Allocate land surface model arrays
951	IF ( land_surface ) THEN
952	CALL lsm_init_arrays
953	ENDIF
954
955	!
956	!-- Allocate wind turbine model arrays
957	IF ( wind_turbine ) THEN
958	CALL wtm_init_arrays
959	ENDIF
960
961	!
962	!-- Initialize virtual flight measurements
963	IF ( virtual_flight ) THEN
964	CALL flight_init
965	ENDIF
966
967	!
968	!-- Initialize nudging if required
969	IF ( nudging ) THEN
970	CALL nudge_init
971	ENDIF
972
973	!
974	!-- Initialize reading of large scale forcing from external file - if required
975	IF ( large_scale_forcing ) THEN
976	CALL lsf_init
977	ENDIF
978
979	!
980	!-- Allocate arrays containing the RK coefficient for calculation of
981	!-- perturbation pressure and turbulent fluxes. At this point values are
982	!-- set for pressure calculation during initialization (where no timestep
983	!-- is done). Further below the values needed within the timestep scheme
984	!-- will be set.
985	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
986	weight_pres(1:intermediate_timestep_count_max) )
987	weight_substep = 1.0_wp
988	weight_pres = 1.0_wp
989	intermediate_timestep_count = 0 ! needed when simulated_time = 0.0
990
991	CALL location_message( 'finished', .TRUE. )
992
993	!
994	!-- Initialize local summation arrays for routine flow_statistics.
995	!-- This is necessary because they may not yet have been initialized when they
996	!-- are called from flow_statistics (or - depending on the chosen model run -
997	!-- are never initialized)
998	sums_divnew_l = 0.0_wp
999	sums_divold_l = 0.0_wp
1000	sums_l_l = 0.0_wp
1001	sums_wsts_bc_l = 0.0_wp
1002
1003	!
1004	!-- Initialize model variables
1005	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1006	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1007	!
1008	!-- First model run of a possible job queue.
1009	!-- Initial profiles of the variables must be computes.
1010	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
1011
1012	CALL location_message( 'initializing with 1D model profiles', .FALSE. )
1013	!
1014	!-- Use solutions of the 1D model as initial profiles,
1015	!-- start 1D model
1016	CALL init_1d_model
1017	!
1018	!-- Transfer initial profiles to the arrays of the 3D model
1019	DO i = nxlg, nxrg
1020	DO j = nysg, nyng
1021	e(:,j,i) = e1d
1022	kh(:,j,i) = kh1d
1023	km(:,j,i) = km1d
1024	pt(:,j,i) = pt_init
1025	u(:,j,i) = u1d
1026	v(:,j,i) = v1d
1027	ENDDO
1028	ENDDO
1029
1030	IF ( humidity ) THEN
1031	DO i = nxlg, nxrg
1032	DO j = nysg, nyng
1033	q(:,j,i) = q_init
1034	ENDDO
1035	ENDDO
1036	IF ( cloud_physics .AND. microphysics_morrison ) THEN
1037	DO i = nxlg, nxrg
1038	DO j = nysg, nyng
1039	qc(:,j,i) = 0.0_wp
1040	nc(:,j,i) = 0.0_wp
1041	ENDDO
1042	ENDDO
1043	ENDIF
1044	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1045	DO i = nxlg, nxrg
1046	DO j = nysg, nyng
1047	qr(:,j,i) = 0.0_wp
1048	nr(:,j,i) = 0.0_wp
1049	ENDDO
1050	ENDDO
1051	ENDIF
1052	ENDIF
1053
1054	IF ( passive_scalar ) THEN
1055	DO i = nxlg, nxrg
1056	DO j = nysg, nyng
1057	s(:,j,i) = s_init
1058	ENDDO
1059	ENDDO
1060	ENDIF
1061
1062	IF ( .NOT. constant_diffusion ) THEN
1063	DO i = nxlg, nxrg
1064	DO j = nysg, nyng
1065	e(:,j,i) = e1d
1066	ENDDO
1067	ENDDO
1068	!
1069	!-- Store initial profiles for output purposes etc.
1070	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
1071
1072	ELSE
1073	e = 0.0_wp ! must be set, because used in
1074	ENDIF
1075	!
1076	!-- Inside buildings set velocities back to zero
1077	IF ( topography /= 'flat' ) THEN
1078	DO i = nxlg, nxrg
1079	DO j = nysg, nyng
1080	DO k = nzb, nzt
1081	u(k,j,i) = MERGE( u(k,j,i), 0.0_wp, &
1082	BTEST( wall_flags_0(k,j,i), 1 ) )
1083	v(k,j,i) = MERGE( v(k,j,i), 0.0_wp, &
1084	BTEST( wall_flags_0(k,j,i), 2 ) )
1085	ENDDO
1086	ENDDO
1087	ENDDO
1088
1089	!
1090	!-- WARNING: The extra boundary conditions set after running the
1091	!-- ------- 1D model impose an error on the divergence one layer
1092	!-- below the topography; need to correct later
1093	!-- ATTENTION: Provisional correction for Piacsek & Williams
1094	!-- --------- advection scheme: keep u and v zero one layer below
1095	!-- the topography.
1096	IF ( ibc_uv_b == 1 ) THEN
1097	!
1098	!-- Neumann condition
1099	DO i = nxl-1, nxr+1
1100	DO j = nys-1, nyn+1
1101	u(nzb,j,i) = u(nzb+1,j,i)
1102	v(nzb,j,i) = v(nzb+1,j,i)
1103	ENDDO
1104	ENDDO
1105
1106	ENDIF
1107
1108	ENDIF
1109
1110	CALL location_message( 'finished', .TRUE. )
1111
1112	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
1113	THEN
1114
1115	CALL location_message( 'initializing with constant profiles', .FALSE. )
1116	!
1117	!-- Overwrite initial profiles in case of synthetic turbulence generator
1118	IF( use_synthetic_turbulence_generator ) THEN
1119	CALL stg_init
1120	ENDIF
1121
1122	!
1123	!-- Use constructed initial profiles (velocity constant with height,
1124	!-- temperature profile with constant gradient)
1125	DO i = nxlg, nxrg
1126	DO j = nysg, nyng
1127	pt(:,j,i) = pt_init
1128	u(:,j,i) = u_init
1129	v(:,j,i) = v_init
1130	ENDDO
1131	ENDDO
1132
1133	!
1134	!-- Set initial horizontal velocities at the lowest computational grid
1135	!-- levels to zero in order to avoid too small time steps caused by the
1136	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
1137	!-- in the limiting formula!).
1138	IF ( ibc_uv_b /= 1 ) THEN
1139	DO i = nxlg, nxrg
1140	DO j = nysg, nyng
1141	DO k = nzb, nzt
1142	u(k,j,i) = MERGE( u(k,j,i), 0.0_wp, &
1143	BTEST( wall_flags_0(k,j,i), 20 ) )
1144	v(k,j,i) = MERGE( v(k,j,i), 0.0_wp, &
1145	BTEST( wall_flags_0(k,j,i), 21 ) )
1146	ENDDO
1147	ENDDO
1148	ENDDO
1149	ENDIF
1150
1151	IF ( humidity ) THEN
1152	DO i = nxlg, nxrg
1153	DO j = nysg, nyng
1154	q(:,j,i) = q_init
1155	ENDDO
1156	ENDDO
1157	IF ( cloud_physics .AND. microphysics_morrison ) THEN
1158	DO i = nxlg, nxrg
1159	DO j = nysg, nyng
1160	qc(:,j,i) = 0.0_wp
1161	nc(:,j,i) = 0.0_wp
1162	ENDDO
1163	ENDDO
1164	ENDIF
1165
1166	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1167	DO i = nxlg, nxrg
1168	DO j = nysg, nyng
1169	qr(:,j,i) = 0.0_wp
1170	nr(:,j,i) = 0.0_wp
1171	ENDDO
1172	ENDDO
1173	ENDIF
1174
1175	ENDIF
1176
1177	IF ( passive_scalar ) THEN
1178	DO i = nxlg, nxrg
1179	DO j = nysg, nyng
1180	s(:,j,i) = s_init
1181	ENDDO
1182	ENDDO
1183	ENDIF
1184
1185	IF ( ocean ) THEN
1186	DO i = nxlg, nxrg
1187	DO j = nysg, nyng
1188	sa(:,j,i) = sa_init
1189	ENDDO
1190	ENDDO
1191	ENDIF
1192
1193	IF ( constant_diffusion ) THEN
1194	km = km_constant
1195	kh = km / prandtl_number
1196	e = 0.0_wp
1197	ELSEIF ( e_init > 0.0_wp ) THEN
1198	DO k = nzb+1, nzt
1199	km(k,:,:) = 0.1_wp * l_grid(k) * SQRT( e_init )
1200	ENDDO
1201	km(nzb,:,:) = km(nzb+1,:,:)
1202	km(nzt+1,:,:) = km(nzt,:,:)
1203	kh = km / prandtl_number
1204	e = e_init
1205	ELSE
1206	IF ( .NOT. ocean ) THEN
1207	kh = 0.01_wp ! there must exist an initial diffusion, because
1208	km = 0.01_wp ! otherwise no TKE would be produced by the
1209	! production terms, as long as not yet
1210	! e = (u/cm)*2 at k=nzb+1
1211	ELSE
1212	kh = 0.00001_wp
1213	km = 0.00001_wp
1214	ENDIF
1215	e = 0.0_wp
1216	ENDIF
1217	!
1218	!-- Compute initial temperature field and other constants used in case
1219	!-- of a sloping surface
1220	IF ( sloping_surface ) CALL init_slope
1221
1222	CALL location_message( 'finished', .TRUE. )
1223
1224	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
1225	THEN
1226
1227	CALL location_message( 'initializing by user', .FALSE. )
1228	!
1229	!-- Initialization will completely be done by the user
1230	CALL user_init_3d_model
1231
1232	CALL location_message( 'finished', .TRUE. )
1233
1234	ENDIF
1235
1236	CALL location_message( 'initializing statistics, boundary conditions, etc.', &
1237	.FALSE. )
1238
1239	!
1240	!-- Bottom boundary
1241	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
1242	u(nzb,:,:) = 0.0_wp
1243	v(nzb,:,:) = 0.0_wp
1244	ENDIF
1245
1246	!
1247	!-- Apply channel flow boundary condition
1248	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
1249	u(nzt+1,:,:) = 0.0_wp
1250	v(nzt+1,:,:) = 0.0_wp
1251	ENDIF
1252
1253	!
1254	!-- Calculate virtual potential temperature
1255	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
1256
1257	!
1258	!-- Store initial profiles for output purposes etc.
1259	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
1260	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
1261	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
1262	hom(nzb,1,5,:) = 0.0_wp
1263	hom(nzb,1,6,:) = 0.0_wp
1264	ENDIF
1265	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1266	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
1267	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
1268
1269	IF ( ocean ) THEN
1270	!
1271	!-- Store initial salinity profile
1272	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
1273	ENDIF
1274
1275	IF ( humidity ) THEN
1276	!
1277	!-- Store initial profile of total water content, virtual potential
1278	!-- temperature
1279	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1280	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
1281	IF ( cloud_physics .OR. cloud_droplets ) THEN
1282	!
1283	!-- Store initial profile of specific humidity and potential
1284	!-- temperature
1285	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1286	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1287	ENDIF
1288	ENDIF
1289
1290	IF ( passive_scalar ) THEN
1291	!
1292	!-- Store initial scalar profile
1293	hom(:,1,115,:) = SPREAD( s(:,nys,nxl), 2, statistic_regions+1 )
1294	ENDIF
1295
1296	!
1297	!-- Initialize the random number generators (from numerical recipes)
1298	CALL random_function_ini
1299
1300	IF ( random_generator == 'random-parallel' ) THEN
1301	CALL init_parallel_random_generator(nx, ny, nys, nyn, nxl, nxr)
1302	ENDIF
1303	!
1304	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1305	!-- the reference state will be set (overwritten) in init_ocean)
1306	IF ( use_single_reference_value ) THEN
1307	IF ( .NOT. humidity ) THEN
1308	ref_state(:) = pt_reference
1309	ELSE
1310	ref_state(:) = vpt_reference
1311	ENDIF
1312	ELSE
1313	IF ( .NOT. humidity ) THEN
1314	ref_state(:) = pt_init(:)
1315	ELSE
1316	ref_state(:) = vpt(:,nys,nxl)
1317	ENDIF
1318	ENDIF
1319
1320	!
1321	!-- For the moment, vertical velocity is zero
1322	w = 0.0_wp
1323
1324	!
1325	!-- Initialize array sums (must be defined in first call of pres)
1326	sums = 0.0_wp
1327
1328	!
1329	!-- In case of iterative solvers, p must get an initial value
1330	IF ( psolver(1:9) == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
1331
1332	!
1333	!-- Treating cloud physics, liquid water content and precipitation amount
1334	!-- are zero at beginning of the simulation
1335	IF ( cloud_physics ) THEN
1336	ql = 0.0_wp
1337	qc = 0.0_wp
1338
1339	precipitation_amount = 0.0_wp
1340	ENDIF
1341	!
1342	!-- Impose vortex with vertical axis on the initial velocity profile
1343	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1344	CALL init_rankine
1345	ENDIF
1346
1347	!
1348	!-- Impose temperature anomaly (advection test only)
1349	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1350	CALL init_pt_anomaly
1351	ENDIF
1352
1353	!
1354	!-- If required, change the surface temperature at the start of the 3D run
1355	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
1356	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1357	ENDIF
1358
1359	!
1360	!-- If required, change the surface humidity/scalar at the start of the 3D
1361	!-- run
1362	IF ( humidity .AND. q_surface_initial_change /= 0.0_wp ) &
1363	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1364
1365	IF ( passive_scalar .AND. s_surface_initial_change /= 0.0_wp ) &
1366	s(nzb,:,:) = s(nzb,:,:) + s_surface_initial_change
1367
1368
1369	!
1370	!-- Initialize old and new time levels.
1371	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
1372	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1373
1374	IF ( humidity ) THEN
1375	tq_m = 0.0_wp
1376	q_p = q
1377	IF ( cloud_physics .AND. microphysics_morrison ) THEN
1378	tqc_m = 0.0_wp
1379	qc_p = qc
1380	tnc_m = 0.0_wp
1381	nc_p = nc
1382	ENDIF
1383	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1384	tqr_m = 0.0_wp
1385	qr_p = qr
1386	tnr_m = 0.0_wp
1387	nr_p = nr
1388	ENDIF
1389	ENDIF
1390
1391	IF ( passive_scalar ) THEN
1392	ts_m = 0.0_wp
1393	s_p = s
1394	ENDIF
1395
1396	IF ( ocean ) THEN
1397	tsa_m = 0.0_wp
1398	sa_p = sa
1399	ENDIF
1400
1401	CALL location_message( 'finished', .TRUE. )
1402
1403	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1404	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1405	THEN
1406
1407	CALL location_message( 'initializing in case of restart / cyclic_fill', &
1408	.FALSE. )
1409	!
1410	!-- Initialize surface elements and its attributes, e.g. heat- and
1411	!-- momentumfluxes, roughness, scaling parameters. As number of surface
1412	!-- elements might be different between runs, e.g. in case of cyclic fill,
1413	!-- and not all surface elements are read, surface elements need to be
1414	!-- initialized before.
1415	CALL init_surfaces
1416	!
1417	!-- When reading data for cyclic fill of 3D prerun data files, read
1418	!-- some of the global variables from the restart file which are required
1419	!-- for initializing the inflow
1420	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1421
1422	DO i = 0, io_blocks-1
1423	IF ( i == io_group ) THEN
1424	CALL read_parts_of_var_list
1425	CALL close_file( 13 )
1426	ENDIF
1427	#if defined( __parallel )
1428	CALL MPI_BARRIER( comm2d, ierr )
1429	#endif
1430	ENDDO
1431
1432	ENDIF
1433
1434	!
1435	!-- Read binary data from restart file
1436	DO i = 0, io_blocks-1
1437	IF ( i == io_group ) THEN
1438	CALL read_3d_binary
1439	ENDIF
1440	#if defined( __parallel )
1441	CALL MPI_BARRIER( comm2d, ierr )
1442	#endif
1443	ENDDO
1444
1445	!
1446	!-- Initialization of the turbulence recycling method
1447	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1448	turbulent_inflow ) THEN
1449	!
1450	!-- First store the profiles to be used at the inflow.
1451	!-- These profiles are the (temporally) and horizontally averaged vertical
1452	!-- profiles from the prerun. Alternatively, prescribed profiles
1453	!-- for u,v-components can be used.
1454	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,7) )
1455
1456	IF ( use_prescribed_profile_data ) THEN
1457	mean_inflow_profiles(:,1) = u_init ! u
1458	mean_inflow_profiles(:,2) = v_init ! v
1459	ELSE
1460	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1461	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1462	ENDIF
1463	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1464	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1465	IF ( humidity ) &
1466	mean_inflow_profiles(:,6) = hom_sum(:,41,0) ! q
1467	IF ( passive_scalar ) &
1468	mean_inflow_profiles(:,7) = hom_sum(:,115,0) ! s
1469
1470	!
1471	!-- If necessary, adjust the horizontal flow field to the prescribed
1472	!-- profiles
1473	IF ( use_prescribed_profile_data ) THEN
1474	DO i = nxlg, nxrg
1475	DO j = nysg, nyng
1476	DO k = nzb, nzt+1
1477	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1478	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1479	ENDDO
1480	ENDDO
1481	ENDDO
1482	ENDIF
1483
1484	!
1485	!-- Use these mean profiles at the inflow (provided that Dirichlet
1486	!-- conditions are used)
1487	IF ( inflow_l ) THEN
1488	DO j = nysg, nyng
1489	DO k = nzb, nzt+1
1490	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1491	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1492	w(k,j,nxlg:-1) = 0.0_wp
1493	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1494	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1495	IF ( humidity ) &
1496	q(k,j,nxlg:-1) = mean_inflow_profiles(k,6)
1497	IF ( passive_scalar ) &
1498	s(k,j,nxlg:-1) = mean_inflow_profiles(k,7)
1499	ENDDO
1500	ENDDO
1501	ENDIF
1502
1503	!
1504	!-- Calculate the damping factors to be used at the inflow. For a
1505	!-- turbulent inflow the turbulent fluctuations have to be limited
1506	!-- vertically because otherwise the turbulent inflow layer will grow
1507	!-- in time.
1508	IF ( inflow_damping_height == 9999999.9_wp ) THEN
1509	!
1510	!-- Default: use the inversion height calculated by the prerun; if
1511	!-- this is zero, inflow_damping_height must be explicitly
1512	!-- specified.
1513	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
1514	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1515	ELSE
1516	WRITE( message_string, * ) 'inflow_damping_height must be ', &
1517	'explicitly specified because&the inversion height ', &
1518	'calculated by the prerun is zero.'
1519	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1520	ENDIF
1521
1522	ENDIF
1523
1524	IF ( inflow_damping_width == 9999999.9_wp ) THEN
1525	!
1526	!-- Default for the transition range: one tenth of the undamped
1527	!-- layer
1528	inflow_damping_width = 0.1_wp * inflow_damping_height
1529
1530	ENDIF
1531
1532	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1533
1534	DO k = nzb, nzt+1
1535
1536	IF ( zu(k) <= inflow_damping_height ) THEN
1537	inflow_damping_factor(k) = 1.0_wp
1538	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1539	inflow_damping_factor(k) = 1.0_wp - &
1540	( zu(k) - inflow_damping_height ) / &
1541	inflow_damping_width
1542	ELSE
1543	inflow_damping_factor(k) = 0.0_wp
1544	ENDIF
1545
1546	ENDDO
1547
1548	ENDIF
1549
1550	!
1551	!-- Inside buildings set velocities and TKE back to zero
1552	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1553	topography /= 'flat' ) THEN
1554	!
1555	!-- Inside buildings set velocities and TKE back to zero.
1556	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1557	!-- maybe revise later.
1558	DO i = nxlg, nxrg
1559	DO j = nysg, nyng
1560	DO k = nzb, nzt
1561	u(k,j,i) = MERGE( u(k,j,i), 0.0_wp, &
1562	BTEST( wall_flags_0(k,j,i), 1 ) )
1563	v(k,j,i) = MERGE( v(k,j,i), 0.0_wp, &
1564	BTEST( wall_flags_0(k,j,i), 2 ) )
1565	w(k,j,i) = MERGE( w(k,j,i), 0.0_wp, &
1566	BTEST( wall_flags_0(k,j,i), 3 ) )
1567	e(k,j,i) = MERGE( e(k,j,i), 0.0_wp, &
1568	BTEST( wall_flags_0(k,j,i), 0 ) )
1569	tu_m(k,j,i) = MERGE( tu_m(k,j,i), 0.0_wp, &
1570	BTEST( wall_flags_0(k,j,i), 1 ) )
1571	tv_m(k,j,i) = MERGE( tv_m(k,j,i), 0.0_wp, &
1572	BTEST( wall_flags_0(k,j,i), 2 ) )
1573	tw_m(k,j,i) = MERGE( tw_m(k,j,i), 0.0_wp, &
1574	BTEST( wall_flags_0(k,j,i), 3 ) )
1575	te_m(k,j,i) = MERGE( te_m(k,j,i), 0.0_wp, &
1576	BTEST( wall_flags_0(k,j,i), 0 ) )
1577	tpt_m(k,j,i) = MERGE( tpt_m(k,j,i), 0.0_wp, &
1578	BTEST( wall_flags_0(k,j,i), 0 ) )
1579	ENDDO
1580	ENDDO
1581	ENDDO
1582
1583	ENDIF
1584
1585	!
1586	!-- Calculate initial temperature field and other constants used in case
1587	!-- of a sloping surface
1588	IF ( sloping_surface ) CALL init_slope
1589
1590	!
1591	!-- Initialize new time levels (only done in order to set boundary values
1592	!-- including ghost points)
1593	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1594	IF ( humidity ) THEN
1595	q_p = q
1596	IF ( cloud_physics .AND. microphysics_morrison ) THEN
1597	qc_p = qc
1598	nc_p = nc
1599	ENDIF
1600	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1601	qr_p = qr
1602	nr_p = nr
1603	ENDIF
1604	ENDIF
1605	IF ( passive_scalar ) s_p = s
1606	IF ( ocean ) sa_p = sa
1607
1608	!
1609	!-- Allthough tendency arrays are set in prognostic_equations, they have
1610	!-- have to be predefined here because they are used (but multiplied with 0)
1611	!-- there before they are set.
1612	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
1613	IF ( humidity ) THEN
1614	tq_m = 0.0_wp
1615	IF ( cloud_physics .AND. microphysics_morrison ) THEN
1616	tqc_m = 0.0_wp
1617	tnc_m = 0.0_wp
1618	ENDIF
1619	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1620	tqr_m = 0.0_wp
1621	tnr_m = 0.0_wp
1622	ENDIF
1623	ENDIF
1624	IF ( passive_scalar ) ts_m = 0.0_wp
1625	IF ( ocean ) tsa_m = 0.0_wp
1626	!
1627	!-- Initialize synthetic turbulence generator in case of restart.
1628	IF ( TRIM( initializing_actions ) == 'read_restart_data' .AND. &
1629	use_synthetic_turbulence_generator ) CALL stg_init
1630
1631	CALL location_message( 'finished', .TRUE. )
1632
1633	ELSE
1634	!
1635	!-- Actually this part of the programm should not be reached
1636	message_string = 'unknown initializing problem'
1637	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1638	ENDIF
1639
1640
1641	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1642	!
1643	!-- Initialize old timelevels needed for radiation boundary conditions
1644	IF ( outflow_l ) THEN
1645	u_m_l(:,:,:) = u(:,:,1:2)
1646	v_m_l(:,:,:) = v(:,:,0:1)
1647	w_m_l(:,:,:) = w(:,:,0:1)
1648	ENDIF
1649	IF ( outflow_r ) THEN
1650	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1651	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1652	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1653	ENDIF
1654	IF ( outflow_s ) THEN
1655	u_m_s(:,:,:) = u(:,0:1,:)
1656	v_m_s(:,:,:) = v(:,1:2,:)
1657	w_m_s(:,:,:) = w(:,0:1,:)
1658	ENDIF
1659	IF ( outflow_n ) THEN
1660	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1661	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1662	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1663	ENDIF
1664
1665	ENDIF
1666
1667	!
1668	!-- Calculate the initial volume flow at the right and north boundary
1669	IF ( conserve_volume_flow ) THEN
1670
1671	IF ( use_prescribed_profile_data ) THEN
1672
1673	volume_flow_initial_l = 0.0_wp
1674	volume_flow_area_l = 0.0_wp
1675
1676	IF ( nxr == nx ) THEN
1677	DO j = nys, nyn
1678	DO k = nzb+1, nzt
1679	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1680	u_init(k) * dzw(k) &
1681	* MERGE( 1.0_wp, 0.0_wp, &
1682	BTEST( wall_flags_0(k,j,nxr), 1 )&
1683	)
1684
1685	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
1686	* MERGE( 1.0_wp, 0.0_wp, &
1687	BTEST( wall_flags_0(k,j,nxr), 1 )&
1688	)
1689	ENDDO
1690	ENDDO
1691	ENDIF
1692
1693	IF ( nyn == ny ) THEN
1694	DO i = nxl, nxr
1695	DO k = nzb+1, nzt
1696	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1697	v_init(k) * dzw(k) &
1698	* MERGE( 1.0_wp, 0.0_wp, &
1699	BTEST( wall_flags_0(k,nyn,i), 2 )&
1700	)
1701	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
1702	* MERGE( 1.0_wp, 0.0_wp, &
1703	BTEST( wall_flags_0(k,nyn,i), 2 )&
1704	)
1705	ENDDO
1706	ENDDO
1707	ENDIF
1708
1709	#if defined( __parallel )
1710	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1711	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1712	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1713	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1714
1715	#else
1716	volume_flow_initial = volume_flow_initial_l
1717	volume_flow_area = volume_flow_area_l
1718	#endif
1719
1720	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1721
1722	volume_flow_initial_l = 0.0_wp
1723	volume_flow_area_l = 0.0_wp
1724
1725	IF ( nxr == nx ) THEN
1726	DO j = nys, nyn
1727	DO k = nzb+1, nzt
1728	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1729	hom_sum(k,1,0) * dzw(k) &
1730	* MERGE( 1.0_wp, 0.0_wp, &
1731	BTEST( wall_flags_0(k,j,nx), 1 ) &
1732	)
1733	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
1734	* MERGE( 1.0_wp, 0.0_wp, &
1735	BTEST( wall_flags_0(k,j,nx), 1 ) &
1736	)
1737	ENDDO
1738	ENDDO
1739	ENDIF
1740
1741	IF ( nyn == ny ) THEN
1742	DO i = nxl, nxr
1743	DO k = nzb+1, nzt
1744	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1745	hom_sum(k,2,0) * dzw(k) &
1746	* MERGE( 1.0_wp, 0.0_wp, &
1747	BTEST( wall_flags_0(k,ny,i), 2 ) &
1748	)
1749	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
1750	* MERGE( 1.0_wp, 0.0_wp, &
1751	BTEST( wall_flags_0(k,ny,i), 2 ) &
1752	)
1753	ENDDO
1754	ENDDO
1755	ENDIF
1756
1757	#if defined( __parallel )
1758	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1759	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1760	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1761	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1762
1763	#else
1764	volume_flow_initial = volume_flow_initial_l
1765	volume_flow_area = volume_flow_area_l
1766	#endif
1767
1768	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1769
1770	volume_flow_initial_l = 0.0_wp
1771	volume_flow_area_l = 0.0_wp
1772
1773	IF ( nxr == nx ) THEN
1774	DO j = nys, nyn
1775	DO k = nzb+1, nzt
1776	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1777	u(k,j,nx) * dzw(k) &
1778	* MERGE( 1.0_wp, 0.0_wp, &
1779	BTEST( wall_flags_0(k,j,nx), 1 ) &
1780	)
1781	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
1782	* MERGE( 1.0_wp, 0.0_wp, &
1783	BTEST( wall_flags_0(k,j,nx), 1 ) &
1784	)
1785	ENDDO
1786	ENDDO
1787	ENDIF
1788
1789	IF ( nyn == ny ) THEN
1790	DO i = nxl, nxr
1791	DO k = nzb+1, nzt
1792	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1793	v(k,ny,i) * dzw(k) &
1794	* MERGE( 1.0_wp, 0.0_wp, &
1795	BTEST( wall_flags_0(k,ny,i), 2 ) &
1796	)
1797	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
1798	* MERGE( 1.0_wp, 0.0_wp, &
1799	BTEST( wall_flags_0(k,ny,i), 2 ) &
1800	)
1801	ENDDO
1802	ENDDO
1803	ENDIF
1804
1805	#if defined( __parallel )
1806	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1807	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1808	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1809	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1810
1811	#else
1812	volume_flow_initial = volume_flow_initial_l
1813	volume_flow_area = volume_flow_area_l
1814	#endif
1815
1816	ENDIF
1817
1818	!
1819	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1820	!-- from u\|v_bulk instead
1821	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1822	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1823	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1824	ENDIF
1825
1826	ENDIF
1827	!
1828	!-- Initialize surface elements and its attributes, e.g. heat- and
1829	!-- momentumfluxes, roughness, scaling parameters.
1830	!-- This is already done in case of restart data.
1831	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1832	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1833	CALL init_surfaces
1834	!
1835	!-- Finally, if random_heatflux is set, disturb shf at horizontal
1836	!-- surfaces. Actually, this should be done in surface_mod, where all other
1837	!-- initializations of surface quantities are done. However, this
1838	!-- would create a ring dependency, hence, it is done here. Maybe delete
1839	!-- disturb_heatflux and tranfer the respective code directly into the
1840	!-- initialization in surface_mod.
1841	IF ( use_surface_fluxes .AND. constant_heatflux .AND. &
1842	random_heatflux ) THEN
1843	IF ( surf_def_h(0)%ns >= 1 ) CALL disturb_heatflux( surf_def_h(0) )
1844	IF ( surf_lsm_h%ns >= 1 ) CALL disturb_heatflux( surf_lsm_h )
1845	IF ( surf_usm_h%ns >= 1 ) CALL disturb_heatflux( surf_usm_h )
1846	ENDIF
1847	ENDIF
1848
1849	!
1850	!-- Initialize surface forcing corresponding to large-scale forcing. Therein,
1851	!-- initialize heat-fluxes, etc. via datatype. Revise it later!
1852	IF ( large_scale_forcing .AND. lsf_surf ) THEN
1853	IF ( use_surface_fluxes .AND. constant_heatflux ) THEN
1854	CALL ls_forcing_surf ( simulated_time )
1855	ENDIF
1856	ENDIF
1857	!
1858	!-- Initialize quantities for special advections schemes
1859	CALL init_advec
1860
1861	!
1862	!-- Impose random perturbation on the horizontal velocity field and then
1863	!-- remove the divergences from the velocity field at the initial stage
1864	IF ( create_disturbances .AND. disturbance_energy_limit /= 0.0_wp .AND. &
1865	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1866	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1867
1868	CALL location_message( 'creating initial disturbances', .FALSE. )
1869	CALL disturb_field( 'u', tend, u )
1870	CALL disturb_field( 'v', tend, v )
1871	CALL location_message( 'finished', .TRUE. )
1872
1873	CALL location_message( 'calling pressure solver', .FALSE. )
1874	n_sor = nsor_ini
1875	CALL pres
1876	n_sor = nsor
1877	CALL location_message( 'finished', .TRUE. )
1878
1879	ENDIF
1880
1881	!
1882	!-- If required, initialize quantities needed for the plant canopy model
1883	IF ( plant_canopy ) THEN
1884	CALL location_message( 'initializing plant canopy model', .FALSE. )
1885	CALL pcm_init
1886	CALL location_message( 'finished', .TRUE. )
1887	ENDIF
1888
1889	!
1890	!-- If required, initialize dvrp-software
1891	IF ( dt_dvrp /= 9999999.9_wp ) CALL init_dvrp
1892
1893	IF ( ocean ) THEN
1894	!
1895	!-- Initialize quantities needed for the ocean model
1896	CALL init_ocean
1897
1898	ELSE
1899	!
1900	!-- Initialize quantities for handling cloud physics
1901	!-- This routine must be called before lpm_init, because
1902	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1903	!-- lpm_init) is not defined.
1904	CALL init_cloud_physics
1905	!
1906	!-- Initialize bulk cloud microphysics
1907	CALL microphysics_init
1908	ENDIF
1909
1910	!
1911	!-- If required, initialize particles
1912	IF ( particle_advection ) CALL lpm_init
1913
1914	!
1915	!-- If required, initialize quantities needed for the LSM
1916	IF ( land_surface ) THEN
1917	CALL location_message( 'initializing land surface model', .FALSE. )
1918	CALL lsm_init
1919	CALL location_message( 'finished', .TRUE. )
1920	ENDIF
1921
1922	!
1923	!-- Initialize surface layer (done after LSM as roughness length are required
1924	!-- for initialization
1925	IF ( constant_flux_layer ) THEN
1926	CALL location_message( 'initializing surface layer', .FALSE. )
1927	CALL init_surface_layer_fluxes
1928	CALL location_message( 'finished', .TRUE. )
1929	ENDIF
1930
1931	!
1932	!-- If required, initialize radiation model
1933	IF ( radiation ) THEN
1934	CALL location_message( 'initializing radiation model', .FALSE. )
1935	CALL radiation_init
1936	CALL location_message( 'finished', .TRUE. )
1937	ENDIF
1938
1939
1940	!
1941	!-- Temporary solution to add LSM and radiation time series to the default
1942	!-- output
1943	IF ( land_surface .OR. radiation ) THEN
1944	IF ( TRIM( radiation_scheme ) == 'rrtmg' ) THEN
1945	dots_num = dots_num + 15
1946	ELSE
1947	dots_num = dots_num + 11
1948	ENDIF
1949	ENDIF
1950
1951	!
1952	!-- If required, initialize urban surface model
1953	IF ( urban_surface ) THEN
1954	CALL location_message( 'initializing urban surface model', .FALSE. )
1955	CALL usm_init_urban_surface
1956	CALL location_message( 'finished', .TRUE. )
1957	ENDIF
1958
1959	!
1960	!-- If required, initialize quantities needed for the wind turbine model
1961	IF ( wind_turbine ) THEN
1962	CALL location_message( 'initializing wind turbine model', .FALSE. )
1963	CALL wtm_init
1964	CALL location_message( 'finished', .TRUE. )
1965	ENDIF
1966
1967
1968	!
1969	!-- Initialize the ws-scheme.
1970	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1971
1972	!
1973	!-- Setting weighting factors for calculation of perturbation pressure
1974	!-- and turbulent quantities from the RK substeps
1975	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1976
1977	weight_substep(1) = 1._wp/6._wp
1978	weight_substep(2) = 3._wp/10._wp
1979	weight_substep(3) = 8._wp/15._wp
1980
1981	weight_pres(1) = 1._wp/3._wp
1982	weight_pres(2) = 5._wp/12._wp
1983	weight_pres(3) = 1._wp/4._wp
1984
1985	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1986
1987	weight_substep(1) = 1._wp/2._wp
1988	weight_substep(2) = 1._wp/2._wp
1989
1990	weight_pres(1) = 1._wp/2._wp
1991	weight_pres(2) = 1._wp/2._wp
1992
1993	ELSE ! for Euler-method
1994
1995	weight_substep(1) = 1.0_wp
1996	weight_pres(1) = 1.0_wp
1997
1998	ENDIF
1999
2000	!
2001	!-- Initialize Rayleigh damping factors
2002	rdf = 0.0_wp
2003	rdf_sc = 0.0_wp
2004	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
2005	IF ( .NOT. ocean ) THEN
2006	DO k = nzb+1, nzt
2007	IF ( zu(k) >= rayleigh_damping_height ) THEN
2008	rdf(k) = rayleigh_damping_factor * &
2009	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
2010	/ ( zu(nzt) - rayleigh_damping_height ) ) &
2011	)**2
2012	ENDIF
2013	ENDDO
2014	ELSE
2015	DO k = nzt, nzb+1, -1
2016	IF ( zu(k) <= rayleigh_damping_height ) THEN
2017	rdf(k) = rayleigh_damping_factor * &
2018	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
2019	/ ( rayleigh_damping_height - zu(nzb+1) ) ) &
2020	)**2
2021	ENDIF
2022	ENDDO
2023	ENDIF
2024	ENDIF
2025	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
2026
2027	!
2028	!-- Initialize the starting level and the vertical smoothing factor used for
2029	!-- the external pressure gradient
2030	dp_smooth_factor = 1.0_wp
2031	IF ( dp_external ) THEN
2032	!
2033	!-- Set the starting level dp_level_ind_b only if it has not been set before
2034	!-- (e.g. in init_grid).
2035	IF ( dp_level_ind_b == 0 ) THEN
2036	ind_array = MINLOC( ABS( dp_level_b - zu ) )
2037	dp_level_ind_b = ind_array(1) - 1 + nzb
2038	! MINLOC uses lower array bound 1
2039	ENDIF
2040	IF ( dp_smooth ) THEN
2041	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
2042	DO k = dp_level_ind_b+1, nzt
2043	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
2044	( REAL( k - dp_level_ind_b, KIND=wp ) / &
2045	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
2046	ENDDO
2047	ENDIF
2048	ENDIF
2049
2050	!
2051	!-- Initialize damping zone for the potential temperature in case of
2052	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
2053	!-- at the inflow boundary and decreases to zero at pt_damping_width.
2054	ptdf_x = 0.0_wp
2055	ptdf_y = 0.0_wp
2056	IF ( bc_lr_dirrad ) THEN
2057	DO i = nxl, nxr
2058	IF ( ( i * dx ) < pt_damping_width ) THEN
2059	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
2060	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
2061	REAL( pt_damping_width, KIND=wp ) ) ) )**2
2062	ENDIF
2063	ENDDO
2064	ELSEIF ( bc_lr_raddir ) THEN
2065	DO i = nxl, nxr
2066	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
2067	ptdf_x(i) = pt_damping_factor * &
2068	SIN( pi * 0.5_wp * &
2069	( ( i - nx ) * dx + pt_damping_width ) / &
2070	REAL( pt_damping_width, KIND=wp ) )**2
2071	ENDIF
2072	ENDDO
2073	ELSEIF ( bc_ns_dirrad ) THEN
2074	DO j = nys, nyn
2075	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
2076	ptdf_y(j) = pt_damping_factor * &
2077	SIN( pi * 0.5_wp * &
2078	( ( j - ny ) * dy + pt_damping_width ) / &
2079	REAL( pt_damping_width, KIND=wp ) )**2
2080	ENDIF
2081	ENDDO
2082	ELSEIF ( bc_ns_raddir ) THEN
2083	DO j = nys, nyn
2084	IF ( ( j * dy ) < pt_damping_width ) THEN
2085	ptdf_y(j) = pt_damping_factor * &
2086	SIN( pi * 0.5_wp * &
2087	( pt_damping_width - j * dy ) / &
2088	REAL( pt_damping_width, KIND=wp ) )**2
2089	ENDIF
2090	ENDDO
2091	ENDIF
2092
2093	!
2094	!-- Pre-set masks for regional statistics. Default is the total model domain.
2095	!-- Ghost points are excluded because counting values at the ghost boundaries
2096	!-- would bias the statistics
2097	rmask = 1.0_wp
2098	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
2099	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
2100
2101	!
2102	!-- User-defined initializing actions. Check afterwards, if maximum number
2103	!-- of allowed timeseries is exceeded
2104	CALL user_init
2105
2106	IF ( dots_num > dots_max ) THEN
2107	WRITE( message_string, * ) 'number of time series quantities exceeds', &
2108	' its maximum of dots_max = ', dots_max, &
2109	' &Please increase dots_max in modules.f90.'
2110	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
2111	ENDIF
2112
2113	!
2114	!-- Input binary data file is not needed anymore. This line must be placed
2115	!-- after call of user_init!
2116	CALL close_file( 13 )
2117
2118	!
2119	!-- Compute total sum of active mask grid points
2120	!-- and the mean surface level height for each statistic region
2121	!-- ngp_2dh: number of grid points of a horizontal cross section through the
2122	!-- total domain
2123	!-- ngp_3d: number of grid points of the total domain
2124	ngp_2dh_outer_l = 0
2125	ngp_2dh_outer = 0
2126	ngp_2dh_s_inner_l = 0
2127	ngp_2dh_s_inner = 0
2128	ngp_2dh_l = 0
2129	ngp_2dh = 0
2130	ngp_3d_inner_l = 0.0_wp
2131	ngp_3d_inner = 0
2132	ngp_3d = 0
2133	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
2134
2135	mean_surface_level_height = 0.0_wp
2136	mean_surface_level_height_l = 0.0_wp
2137
2138	!
2139	!-- To do: New concept for these non-topography grid points!
2140	DO sr = 0, statistic_regions
2141	DO i = nxl, nxr
2142	DO j = nys, nyn
2143	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
2144	!
2145	!-- All xy-grid points
2146	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
2147	!
2148	!-- Determine mean surface-level height. In case of downward-
2149	!-- facing walls are present, more than one surface level exist.
2150	!-- In this case, use the lowest surface-level height.
2151	IF ( surf_def_h(0)%start_index(j,i) <= &
2152	surf_def_h(0)%end_index(j,i) ) THEN
2153	m = surf_def_h(0)%start_index(j,i)
2154	k = surf_def_h(0)%k(m)
2155	mean_surface_level_height_l(sr) = &
2156	mean_surface_level_height_l(sr) + zw(k-1)
2157	ENDIF
2158	IF ( surf_lsm_h%start_index(j,i) <= &
2159	surf_lsm_h%end_index(j,i) ) THEN
2160	m = surf_lsm_h%start_index(j,i)
2161	k = surf_lsm_h%k(m)
2162	mean_surface_level_height_l(sr) = &
2163	mean_surface_level_height_l(sr) + zw(k-1)
2164	ENDIF
2165	IF ( surf_usm_h%start_index(j,i) <= &
2166	surf_usm_h%end_index(j,i) ) THEN
2167	m = surf_usm_h%start_index(j,i)
2168	k = surf_usm_h%k(m)
2169	mean_surface_level_height_l(sr) = &
2170	mean_surface_level_height_l(sr) + zw(k-1)
2171	ENDIF
2172
2173	k_surf = k - 1
2174
2175	DO k = nzb, nzt+1
2176	!
2177	!-- xy-grid points above topography
2178	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + &
2179	MERGE( 1, 0, BTEST( wall_flags_0(k,j,i), 24 ) )
2180
2181	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + &
2182	MERGE( 1, 0, BTEST( wall_flags_0(k,j,i), 22 ) )
2183
2184	ENDDO
2185	!
2186	!-- All grid points of the total domain above topography
2187	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + ( nz - k_surf + 2 )
2188
2189
2190
2191	ENDIF
2192	ENDDO
2193	ENDDO
2194	ENDDO
2195
2196	sr = statistic_regions + 1
2197	#if defined( __parallel )
2198	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2199	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
2200	comm2d, ierr )
2201	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2202	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
2203	MPI_INTEGER, MPI_SUM, comm2d, ierr )
2204	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2205	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
2206	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
2207	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2208	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
2209	MPI_SUM, comm2d, ierr )
2210	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
2211	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2212	CALL MPI_ALLREDUCE( mean_surface_level_height_l(0), &
2213	mean_surface_level_height(0), sr, MPI_REAL, &
2214	MPI_SUM, comm2d, ierr )
2215	mean_surface_level_height = mean_surface_level_height / REAL( ngp_2dh )
2216	#else
2217	ngp_2dh = ngp_2dh_l
2218	ngp_2dh_outer = ngp_2dh_outer_l
2219	ngp_2dh_s_inner = ngp_2dh_s_inner_l
2220	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
2221	mean_surface_level_height = mean_surface_level_height_l / REAL( ngp_2dh_l )
2222	#endif
2223
2224	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
2225	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
2226
2227	!
2228	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
2229	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
2230	!-- the respective subdomain lie below the surface topography
2231	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
2232	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
2233	ngp_3d_inner(:) )
2234	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
2235
2236	DEALLOCATE( mean_surface_level_height_l, ngp_2dh_l, ngp_2dh_outer_l, &
2237	ngp_3d_inner_l, ngp_3d_inner_tmp )
2238
2239	CALL location_message( 'leaving init_3d_model', .TRUE. )
2240
2241	END SUBROUTINE init_3d_model

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