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source: palm/trunk/SOURCE/init_3d_model.f90 @ 2523

Last change on this file since 2523 was 2513, checked in by kanani, 7 years ago

Bugfixes related to profile output of passive scalar

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/palm/branches/forwind/SOURCE/init_3d_model.f90 1564-1913

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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 2513 2017-10-04 09:24:39Z kanani $
27	! Bugfix in storing initial scalar profile (wrong index)
28	!
29	! 2350 2017-08-15 11:48:26Z kanani
30	! Bugfix in nopointer version
31	!
32	! 2339 2017-08-07 13:55:26Z gronemeier
33	! corrected timestamp in header
34	!
35	! 2338 2017-08-07 12:15:38Z gronemeier
36	! Modularize 1D model
37	!
38	! 2329 2017-08-03 14:24:56Z knoop
39	! Removed temporary bugfix (r2327) as bug is properly resolved by this revision
40	!
41	! 2327 2017-08-02 07:40:57Z maronga
42	! Temporary bugfix
43	!
44	! 2320 2017-07-21 12:47:43Z suehring
45	! Modularize large-scale forcing and nudging
46	!
47	! 2292 2017-06-20 09:51:42Z schwenkel
48	! Implementation of new microphysic scheme: cloud_scheme = 'morrison'
49	! includes two more prognostic equations for cloud drop concentration (nc)
50	! and cloud water content (qc).
51	!
52	! 2277 2017-06-12 10:47:51Z kanani
53	! Removed unused variable sums_up_fraction_l
54	!
55	! 2270 2017-06-09 12:18:47Z maronga
56	! dots_num must be increased when LSM and/or radiation is used
57	!
58	! 2259 2017-06-08 09:09:11Z gronemeier
59	! Implemented synthetic turbulence generator
60	!
61	! 2252 2017-06-07 09:35:37Z knoop
62	! rho_air now depending on surface_pressure even in Boussinesq mode
63	!
64	! 2233 2017-05-30 18:08:54Z suehring
65	!
66	! 2232 2017-05-30 17:47:52Z suehring
67	! Adjustments to new topography and surface concept:
68	! - Modify passed parameters for disturb_field
69	! - Topography representation via flags
70	! - Remove unused arrays.
71	! - Move initialization of surface-related quantities to surface_mod
72	!
73	! 2172 2017-03-08 15:55:25Z knoop
74	! Bugfix: moved parallel random generator initialization into its module
75	!
76	! 2118 2017-01-17 16:38:49Z raasch
77	! OpenACC directives removed
78	!
79	! 2037 2016-10-26 11:15:40Z knoop
80	! Anelastic approximation implemented
81	!
82	! 2031 2016-10-21 15:11:58Z knoop
83	! renamed variable rho to rho_ocean
84	!
85	! 2011 2016-09-19 17:29:57Z kanani
86	! Flag urban_surface is now defined in module control_parameters.
87	!
88	! 2007 2016-08-24 15:47:17Z kanani
89	! Added support for urban surface model,
90	! adjusted location_message in case of plant_canopy
91	!
92	! 2000 2016-08-20 18:09:15Z knoop
93	! Forced header and separation lines into 80 columns
94	!
95	! 1992 2016-08-12 15:14:59Z suehring
96	! Initializaton of scalarflux at model top
97	! Bugfixes in initialization of surface and top salinity flux, top scalar and
98	! humidity fluxes
99	!
100	! 1960 2016-07-12 16:34:24Z suehring
101	! Separate humidity and passive scalar
102	! Increase dimension for mean_inflow_profiles
103	! Remove inadvertent write-statement
104	! Bugfix, large-scale forcing is still not implemented for passive scalars
105	!
106	! 1957 2016-07-07 10:43:48Z suehring
107	! flight module added
108	!
109	! 1920 2016-05-30 10:50:15Z suehring
110	! Initialize us with very small number to avoid segmentation fault during
111	! calculation of Obukhov length
112	!
113	! 1918 2016-05-27 14:35:57Z raasch
114	! intermediate_timestep_count is set 0 instead 1 for first call of pres,
115	! bugfix: initialization of local sum arrays are moved to the beginning of the
116	! routine because otherwise results from pres are overwritten
117	!
118	! 1914 2016-05-26 14:44:07Z witha
119	! Added initialization of the wind turbine model
120	!
121	! 1878 2016-04-19 12:30:36Z hellstea
122	! The zeroth element of weight_pres removed as unnecessary
123	!
124	! 1849 2016-04-08 11:33:18Z hoffmann
125	! Adapted for modularization of microphysics.
126	! precipitation_amount, precipitation_rate, prr moved to arrays_3d.
127	! Initialization of nc_1d, nr_1d, pt_1d, qc_1d, qr_1d, q_1d moved to
128	! microphysics_init.
129	!
130	! 1845 2016-04-08 08:29:13Z raasch
131	! nzb_2d replaced by nzb_u\|v_inner
132	!
133	! 1833 2016-04-07 14:23:03Z raasch
134	! initialization of spectra quantities moved to spectra_mod
135	!
136	! 1831 2016-04-07 13:15:51Z hoffmann
137	! turbulence renamed collision_turbulence
138	!
139	! 1826 2016-04-07 12:01:39Z maronga
140	! Renamed radiation calls.
141	! Renamed canopy model calls.
142	!
143	! 1822 2016-04-07 07:49:42Z hoffmann
144	! icloud_scheme replaced by microphysics_*
145	!
146	! 1817 2016-04-06 15:44:20Z maronga
147	! Renamed lsm calls.
148	!
149	! 1815 2016-04-06 13:49:59Z raasch
150	! zero-settings for velocities inside topography re-activated (was deactivated
151	! in r1762)
152	!
153	! 1788 2016-03-10 11:01:04Z maronga
154	! Added z0q.
155	! Syntax layout improved.
156	!
157	! 1783 2016-03-06 18:36:17Z raasch
158	! netcdf module name changed + related changes
159	!
160	! 1764 2016-02-28 12:45:19Z raasch
161	! bugfix: increase size of volume_flow_area_l and volume_flow_initial_l by 1
162	!
163	! 1762 2016-02-25 12:31:13Z hellstea
164	! Introduction of nested domain feature
165	!
166	! 1738 2015-12-18 13:56:05Z raasch
167	! calculate mean surface level height for each statistic region
168	!
169	! 1734 2015-12-02 12:17:12Z raasch
170	! no initial disturbances in case that the disturbance energy limit has been
171	! set zero
172	!
173	! 1707 2015-11-02 15:24:52Z maronga
174	! Bugfix: transfer of Richardson number from 1D model to Obukhov length caused
175	! devision by zero in neutral stratification
176	!
177	! 1691 2015-10-26 16:17:44Z maronga
178	! Call to init_surface_layer added. rif is replaced by ol and zeta.
179	!
180	! 1682 2015-10-07 23:56:08Z knoop
181	! Code annotations made doxygen readable
182	!
183	! 1615 2015-07-08 18:49:19Z suehring
184	! Enable turbulent inflow for passive_scalar and humidity
185	!
186	! 1585 2015-04-30 07:05:52Z maronga
187	! Initialization of radiation code is now done after LSM initializtion
188	!
189	! 1575 2015-03-27 09:56:27Z raasch
190	! adjustments for psolver-queries
191	!
192	! 1551 2015-03-03 14:18:16Z maronga
193	! Allocation of land surface arrays is now done in the subroutine lsm_init_arrays,
194	! which is part of land_surface_model.
195	!
196	! 1507 2014-12-10 12:14:18Z suehring
197	! Bugfix: set horizontal velocity components to zero inside topography
198	!
199	! 1496 2014-12-02 17:25:50Z maronga
200	! Added initialization of the land surface and radiation schemes
201	!
202	! 1484 2014-10-21 10:53:05Z kanani
203	! Changes due to new module structure of the plant canopy model:
204	! canopy-related initialization (e.g. lad and canopy_heat_flux) moved to new
205	! subroutine init_plant_canopy within the module plant_canopy_model_mod,
206	! call of subroutine init_plant_canopy added.
207	!
208	! 1431 2014-07-15 14:47:17Z suehring
209	! var_d added, in order to normalize spectra.
210	!
211	! 1429 2014-07-15 12:53:45Z knoop
212	! Ensemble run capability added to parallel random number generator
213	!
214	! 1411 2014-05-16 18:01:51Z suehring
215	! Initial horizontal velocity profiles were not set to zero at the first vertical
216	! grid level in case of non-cyclic lateral boundary conditions.
217	!
218	! 1406 2014-05-16 13:47:01Z raasch
219	! bugfix: setting of initial velocities at k=1 to zero not in case of a
220	! no-slip boundary condition for uv
221	!
222	! 1402 2014-05-09 14:25:13Z raasch
223	! location messages modified
224	!
225	! 1400 2014-05-09 14:03:54Z knoop
226	! Parallel random number generator added
227	!
228	! 1384 2014-05-02 14:31:06Z raasch
229	! location messages added
230	!
231	! 1361 2014-04-16 15:17:48Z hoffmann
232	! tend_* removed
233	! Bugfix: w_subs is not allocated anymore if it is already allocated
234	!
235	! 1359 2014-04-11 17:15:14Z hoffmann
236	! module lpm_init_mod added to use statements, because lpm_init has become a
237	! module
238	!
239	! 1353 2014-04-08 15:21:23Z heinze
240	! REAL constants provided with KIND-attribute
241	!
242	! 1340 2014-03-25 19:45:13Z kanani
243	! REAL constants defined as wp-kind
244	!
245	! 1322 2014-03-20 16:38:49Z raasch
246	! REAL constants defined as wp-kind
247	! module interfaces removed
248	!
249	! 1320 2014-03-20 08:40:49Z raasch
250	! ONLY-attribute added to USE-statements,
251	! kind-parameters added to all INTEGER and REAL declaration statements,
252	! kinds are defined in new module kinds,
253	! revision history before 2012 removed,
254	! comment fields (!:) to be used for variable explanations added to
255	! all variable declaration statements
256	!
257	! 1316 2014-03-17 07:44:59Z heinze
258	! Bugfix: allocation of w_subs
259	!
260	! 1299 2014-03-06 13:15:21Z heinze
261	! Allocate w_subs due to extension of large scale subsidence in combination
262	! with large scale forcing data (LSF_DATA)
263	!
264	! 1241 2013-10-30 11:36:58Z heinze
265	! Overwrite initial profiles in case of nudging
266	! Inititialize shf and qsws in case of large_scale_forcing
267	!
268	! 1221 2013-09-10 08:59:13Z raasch
269	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
270	! copy
271	!
272	! 1212 2013-08-15 08:46:27Z raasch
273	! array tri is allocated and included in data copy statement
274	!
275	! 1195 2013-07-01 12:27:57Z heinze
276	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
277	!
278	! 1179 2013-06-14 05:57:58Z raasch
279	! allocate and set ref_state to be used in buoyancy terms
280	!
281	! 1171 2013-05-30 11:27:45Z raasch
282	! diss array is allocated with full size if accelerator boards are used
283	!
284	! 1159 2013-05-21 11:58:22Z fricke
285	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
286	!
287	! 1153 2013-05-10 14:33:08Z raasch
288	! diss array is allocated with dummy elements even if it is not needed
289	! (required by PGI 13.4 / CUDA 5.0)
290	!
291	! 1115 2013-03-26 18:16:16Z hoffmann
292	! unused variables removed
293	!
294	! 1113 2013-03-10 02:48:14Z raasch
295	! openACC directive modified
296	!
297	! 1111 2013-03-08 23:54:10Z raasch
298	! openACC directives added for pres
299	! array diss allocated only if required
300	!
301	! 1092 2013-02-02 11:24:22Z raasch
302	! unused variables removed
303	!
304	! 1065 2012-11-22 17:42:36Z hoffmann
305	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
306	!
307	! 1053 2012-11-13 17:11:03Z hoffmann
308	! allocation and initialisation of necessary data arrays for the two-moment
309	! cloud physics scheme the two new prognostic equations (nr, qr):
310	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
311	! +tend_*, prr
312	!
313	! 1036 2012-10-22 13:43:42Z raasch
314	! code put under GPL (PALM 3.9)
315	!
316	! 1032 2012-10-21 13:03:21Z letzel
317	! save memory by not allocating pt_2 in case of neutral = .T.
318	!
319	! 1025 2012-10-07 16:04:41Z letzel
320	! bugfix: swap indices of mask for ghost boundaries
321	!
322	! 1015 2012-09-27 09:23:24Z raasch
323	! mask is set to zero for ghost boundaries
324	!
325	! 1010 2012-09-20 07:59:54Z raasch
326	! cpp switch __nopointer added for pointer free version
327	!
328	! 1003 2012-09-14 14:35:53Z raasch
329	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
330	!
331	! 1001 2012-09-13 14:08:46Z raasch
332	! all actions concerning leapfrog scheme removed
333	!
334	! 996 2012-09-07 10:41:47Z raasch
335	! little reformatting
336	!
337	! 978 2012-08-09 08:28:32Z fricke
338	! outflow damping layer removed
339	! roughness length for scalar quantites z0h added
340	! damping zone for the potential temperatur in case of non-cyclic lateral
341	! boundaries added
342	! initialization of ptdf_x, ptdf_y
343	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
344	!
345	! 849 2012-03-15 10:35:09Z raasch
346	! init_particles renamed lpm_init
347	!
348	! 825 2012-02-19 03:03:44Z raasch
349	! wang_collision_kernel renamed wang_kernel
350	!
351	! Revision 1.1 1998/03/09 16:22:22 raasch
352	! Initial revision
353	!
354	!
355	! Description:
356	! ------------
357	!> Allocation of arrays and initialization of the 3D model via
358	!> a) pre-run the 1D model
359	!> or
360	!> b) pre-set constant linear profiles
361	!> or
362	!> c) read values of a previous run
363	!------------------------------------------------------------------------------!
364	SUBROUTINE init_3d_model
365
366
367	USE advec_ws
368
369	USE arrays_3d
370
371	USE cloud_parameters, &
372	ONLY: cp, l_v, r_d
373
374	USE constants, &
375	ONLY: pi
376
377	USE control_parameters
378
379	USE flight_mod, &
380	ONLY: flight_init
381
382	USE grid_variables, &
383	ONLY: dx, dy, ddx2_mg, ddy2_mg
384
385	USE indices
386
387	USE lpm_init_mod, &
388	ONLY: lpm_init
389
390	USE kinds
391
392	USE land_surface_model_mod, &
393	ONLY: lsm_init, lsm_init_arrays
394
395	USE lsf_nudging_mod, &
396	ONLY: lsf_init, ls_forcing_surf, nudge_init
397
398	USE microphysics_mod, &
399	ONLY: collision_turbulence, microphysics_init
400
401	USE model_1d_mod, &
402	ONLY: e1d, init_1d_model, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, &
403	v1d, vsws1d
404
405	USE netcdf_interface, &
406	ONLY: dots_max, dots_num
407
408	USE particle_attributes, &
409	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
410
411	USE pegrid
412
413	USE plant_canopy_model_mod, &
414	ONLY: pcm_init, plant_canopy
415
416	USE radiation_model_mod, &
417	ONLY: radiation_init, radiation, radiation_scheme
418
419	USE random_function_mod
420
421	USE random_generator_parallel, &
422	ONLY: init_parallel_random_generator
423
424	USE statistics, &
425	ONLY: hom, hom_sum, mean_surface_level_height, pr_palm, rmask, &
426	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
427	sums_l_l, sums_wsts_bc_l, ts_value, &
428	weight_pres, weight_substep
429
430	USE synthetic_turbulence_generator_mod, &
431	ONLY: stg_init, use_synthetic_turbulence_generator
432
433	USE surface_layer_fluxes_mod, &
434	ONLY: init_surface_layer_fluxes
435
436	USE surface_mod, &
437	ONLY : init_surface_arrays, init_surfaces, surf_def_h, surf_lsm_h, &
438	surf_usm_h
439
440	USE transpose_indices
441
442	USE urban_surface_mod, &
443	ONLY: usm_init_urban_surface
444
445	USE wind_turbine_model_mod, &
446	ONLY: wtm_init, wtm_init_arrays, wind_turbine
447
448	IMPLICIT NONE
449
450	INTEGER(iwp) :: i !<
451	INTEGER(iwp) :: ind_array(1) !<
452	INTEGER(iwp) :: j !<
453	INTEGER(iwp) :: k !<
454	INTEGER(iwp) :: k_surf !< surface level index
455	INTEGER(iwp) :: m !< index of surface element in surface data type
456	INTEGER(iwp) :: sr !< index of statistic region
457
458	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !<
459
460	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !<
461	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !<
462
463	REAL(wp) :: t_surface !< air temperature at the surface
464
465	REAL(wp), DIMENSION(:), ALLOCATABLE :: p_hydrostatic !< hydrostatic pressure
466
467	INTEGER(iwp) :: l !< loop variable
468	INTEGER(iwp) :: nzt_l !< index of top PE boundary for multigrid level
469	REAL(wp) :: dx_l !< grid spacing along x on different multigrid level
470	REAL(wp) :: dy_l !< grid spacing along y on different multigrid level
471
472	REAL(wp), DIMENSION(1:3) :: volume_flow_area_l !<
473	REAL(wp), DIMENSION(1:3) :: volume_flow_initial_l !<
474
475	REAL(wp), DIMENSION(:), ALLOCATABLE :: mean_surface_level_height_l !<
476	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !<
477	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !<
478
479
480	CALL location_message( 'allocating arrays', .FALSE. )
481	!
482	!-- Allocate arrays
483	ALLOCATE( mean_surface_level_height(0:statistic_regions), &
484	mean_surface_level_height_l(0:statistic_regions), &
485	ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
486	ngp_3d(0:statistic_regions), &
487	ngp_3d_inner(0:statistic_regions), &
488	ngp_3d_inner_l(0:statistic_regions), &
489	ngp_3d_inner_tmp(0:statistic_regions), &
490	sums_divnew_l(0:statistic_regions), &
491	sums_divold_l(0:statistic_regions) )
492	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
493	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
494	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
495	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
496	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
497	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
498	sums(nzb:nzt+1,pr_palm+max_pr_user), &
499	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
500	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
501	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
502	ts_value(dots_max,0:statistic_regions) )
503	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
504
505	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
506	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
507	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
508	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
509	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
510
511	#if defined( __nopointer )
512	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
513	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
514	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
515	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
516	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
517	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
518	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
519	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
520	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
521	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
522	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
523	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
524	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
525	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
526	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
527	#else
528	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
529	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
530	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
531	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
532	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
533	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
534	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
535	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
536	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
537	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
538	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
539	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
540	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
541	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
542	IF ( .NOT. neutral ) THEN
543	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
544	ENDIF
545	#endif
546
547	!
548	!-- Following array is required for perturbation pressure within the iterative
549	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
550	!-- the weighted average of the substeps and cannot be used in the Poisson
551	!-- solver.
552	IF ( psolver == 'sor' ) THEN
553	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
554	ELSEIF ( psolver(1:9) == 'multigrid' ) THEN
555	!
556	!-- For performance reasons, multigrid is using one ghost layer only
557	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
558	ENDIF
559
560	!
561	!-- Array for storing constant coeffficients of the tridiagonal solver
562	IF ( psolver == 'poisfft' ) THEN
563	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
564	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
565	ENDIF
566
567	IF ( humidity ) THEN
568	!
569	!-- 3D-humidity
570	#if defined( __nopointer )
571	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
572	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
573	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
574	#else
575	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
576	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
577	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
578	#endif
579
580	!
581	!-- 3D-arrays needed for humidity
582	IF ( humidity ) THEN
583	#if defined( __nopointer )
584	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
585	#else
586	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
587	#endif
588
589	IF ( cloud_physics ) THEN
590	!
591	!-- Liquid water content
592	#if defined( __nopointer )
593	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
594	#else
595	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
596	#endif
597
598	!
599	!-- 3D-cloud water content
600	IF ( .NOT. microphysics_morrison ) THEN
601	#if defined( __nopointer )
602	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
603	#else
604	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
605	#endif
606	ENDIF
607	!
608	!-- Precipitation amount and rate (only needed if output is switched)
609	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
610	precipitation_rate(nysg:nyng,nxlg:nxrg) )
611
612	!
613	!-- 3d-precipitation rate
614	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
615
616	IF ( microphysics_morrison ) THEN
617	!
618	!-- 3D-cloud drop water content, cloud drop concentration arrays
619	#if defined( __nopointer )
620	ALLOCATE( nc(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
621	nc_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
622	qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
623	qc_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
624	tnc_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
625	tqc_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
626	#else
627	ALLOCATE( nc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
628	nc_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
629	nc_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
630	qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
631	qc_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
632	qc_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
633	#endif
634	ENDIF
635
636	IF ( microphysics_seifert ) THEN
637	!
638	!-- 3D-rain water content, rain drop concentration arrays
639	#if defined( __nopointer )
640	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
641	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
642	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
643	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
644	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
645	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
646	#else
647	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
648	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
649	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
650	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
651	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
652	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
653	#endif
654	ENDIF
655
656	ENDIF
657
658	IF ( cloud_droplets ) THEN
659	!
660	!-- Liquid water content, change in liquid water content
661	#if defined( __nopointer )
662	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
663	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
664	#else
665	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
666	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
667	#endif
668	!
669	!-- Real volume of particles (with weighting), volume of particles
670	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
671	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
672	ENDIF
673
674	ENDIF
675
676	ENDIF
677
678
679	IF ( passive_scalar ) THEN
680
681	!
682	!-- 3D scalar arrays
683	#if defined( __nopointer )
684	ALLOCATE( s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
685	s_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
686	ts_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
687	#else
688	ALLOCATE( s_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
689	s_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
690	s_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
691	#endif
692	ENDIF
693
694	IF ( ocean ) THEN
695	#if defined( __nopointer )
696	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
697	rho_ocean(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
698	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
699	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
700	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
701	#else
702	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
703	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
704	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
705	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
706	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
707	prho => prho_1
708	rho_ocean => rho_1 ! routines calc_mean_profile and diffusion_e require
709	! density to be apointer
710	#endif
711	ENDIF
712
713	!
714	!-- Allocation of anelastic and Boussinesq approximation specific arrays
715	ALLOCATE( p_hydrostatic(nzb:nzt+1) )
716	ALLOCATE( rho_air(nzb:nzt+1) )
717	ALLOCATE( rho_air_zw(nzb:nzt+1) )
718	ALLOCATE( drho_air(nzb:nzt+1) )
719	ALLOCATE( drho_air_zw(nzb:nzt+1) )
720
721	!
722	!-- Density profile calculation for anelastic approximation
723	t_surface = pt_surface * ( surface_pressure / 1000.0_wp )**( r_d / cp )
724	IF ( TRIM( approximation ) == 'anelastic' ) THEN
725	DO k = nzb, nzt+1
726	p_hydrostatic(k) = surface_pressure * 100.0_wp * &
727	( 1 - ( g * zu(k) ) / ( cp * t_surface ) &
728	)**( cp / r_d )
729	rho_air(k) = ( p_hydrostatic(k) * &
730	( 100000.0_wp / p_hydrostatic(k) &
731	)**( r_d / cp ) &
732	) / ( r_d * pt_init(k) )
733	ENDDO
734	DO k = nzb, nzt
735	rho_air_zw(k) = 0.5_wp * ( rho_air(k) + rho_air(k+1) )
736	ENDDO
737	rho_air_zw(nzt+1) = rho_air_zw(nzt) &
738	+ 2.0_wp * ( rho_air(nzt+1) - rho_air_zw(nzt) )
739	ELSE
740	DO k = nzb, nzt+1
741	p_hydrostatic(k) = surface_pressure * 100.0_wp * &
742	( 1 - ( g * zu(nzb) ) / ( cp * t_surface ) &
743	)**( cp / r_d )
744	rho_air(k) = ( p_hydrostatic(k) * &
745	( 100000.0_wp / p_hydrostatic(k) &
746	)**( r_d / cp ) &
747	) / ( r_d * pt_init(nzb) )
748	ENDDO
749	DO k = nzb, nzt
750	rho_air_zw(k) = 0.5_wp * ( rho_air(k) + rho_air(k+1) )
751	ENDDO
752	rho_air_zw(nzt+1) = rho_air_zw(nzt) &
753	+ 2.0_wp * ( rho_air(nzt+1) - rho_air_zw(nzt) )
754	ENDIF
755
756	!-- compute the inverse density array in order to avoid expencive divisions
757	drho_air = 1.0_wp / rho_air
758	drho_air_zw = 1.0_wp / rho_air_zw
759
760	!
761	!-- Allocation of flux conversion arrays
762	ALLOCATE( heatflux_input_conversion(nzb:nzt+1) )
763	ALLOCATE( waterflux_input_conversion(nzb:nzt+1) )
764	ALLOCATE( momentumflux_input_conversion(nzb:nzt+1) )
765	ALLOCATE( heatflux_output_conversion(nzb:nzt+1) )
766	ALLOCATE( waterflux_output_conversion(nzb:nzt+1) )
767	ALLOCATE( momentumflux_output_conversion(nzb:nzt+1) )
768
769	!
770	!-- calculate flux conversion factors according to approximation and in-/output mode
771	DO k = nzb, nzt+1
772
773	IF ( TRIM( flux_input_mode ) == 'kinematic' ) THEN
774	heatflux_input_conversion(k) = rho_air_zw(k)
775	waterflux_input_conversion(k) = rho_air_zw(k)
776	momentumflux_input_conversion(k) = rho_air_zw(k)
777	ELSEIF ( TRIM( flux_input_mode ) == 'dynamic' ) THEN
778	heatflux_input_conversion(k) = 1.0_wp / cp
779	waterflux_input_conversion(k) = 1.0_wp / l_v
780	momentumflux_input_conversion(k) = 1.0_wp
781	ENDIF
782
783	IF ( TRIM( flux_output_mode ) == 'kinematic' ) THEN
784	heatflux_output_conversion(k) = drho_air_zw(k)
785	waterflux_output_conversion(k) = drho_air_zw(k)
786	momentumflux_output_conversion(k) = drho_air_zw(k)
787	ELSEIF ( TRIM( flux_output_mode ) == 'dynamic' ) THEN
788	heatflux_output_conversion(k) = cp
789	waterflux_output_conversion(k) = l_v
790	momentumflux_output_conversion(k) = 1.0_wp
791	ENDIF
792
793	IF ( .NOT. humidity ) THEN
794	waterflux_input_conversion(k) = 1.0_wp
795	waterflux_output_conversion(k) = 1.0_wp
796	ENDIF
797
798	ENDDO
799
800	!
801	!-- In case of multigrid method, compute grid lengths and grid factors for the
802	!-- grid levels with respective density on each grid
803	IF ( psolver(1:9) == 'multigrid' ) THEN
804
805	ALLOCATE( ddx2_mg(maximum_grid_level) )
806	ALLOCATE( ddy2_mg(maximum_grid_level) )
807	ALLOCATE( dzu_mg(nzb+1:nzt+1,maximum_grid_level) )
808	ALLOCATE( dzw_mg(nzb+1:nzt+1,maximum_grid_level) )
809	ALLOCATE( f1_mg(nzb+1:nzt,maximum_grid_level) )
810	ALLOCATE( f2_mg(nzb+1:nzt,maximum_grid_level) )
811	ALLOCATE( f3_mg(nzb+1:nzt,maximum_grid_level) )
812	ALLOCATE( rho_air_mg(nzb:nzt+1,maximum_grid_level) )
813	ALLOCATE( rho_air_zw_mg(nzb:nzt+1,maximum_grid_level) )
814
815	dzu_mg(:,maximum_grid_level) = dzu
816	rho_air_mg(:,maximum_grid_level) = rho_air
817	!
818	!-- Next line to ensure an equally spaced grid.
819	dzu_mg(1,maximum_grid_level) = dzu(2)
820	rho_air_mg(nzb,maximum_grid_level) = rho_air(nzb) + &
821	(rho_air(nzb) - rho_air(nzb+1))
822
823	dzw_mg(:,maximum_grid_level) = dzw
824	rho_air_zw_mg(:,maximum_grid_level) = rho_air_zw
825	nzt_l = nzt
826	DO l = maximum_grid_level-1, 1, -1
827	dzu_mg(nzb+1,l) = 2.0_wp * dzu_mg(nzb+1,l+1)
828	dzw_mg(nzb+1,l) = 2.0_wp * dzw_mg(nzb+1,l+1)
829	rho_air_mg(nzb,l) = rho_air_mg(nzb,l+1) + (rho_air_mg(nzb,l+1) - rho_air_mg(nzb+1,l+1))
830	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))
831	rho_air_mg(nzb+1,l) = rho_air_mg(nzb+1,l+1)
832	rho_air_zw_mg(nzb+1,l) = rho_air_zw_mg(nzb+1,l+1)
833	nzt_l = nzt_l / 2
834	DO k = 2, nzt_l+1
835	dzu_mg(k,l) = dzu_mg(2k-2,l+1) + dzu_mg(2k-1,l+1)
836	dzw_mg(k,l) = dzw_mg(2k-2,l+1) + dzw_mg(2k-1,l+1)
837	rho_air_mg(k,l) = rho_air_mg(2*k-1,l+1)
838	rho_air_zw_mg(k,l) = rho_air_zw_mg(2*k-1,l+1)
839	ENDDO
840	ENDDO
841
842	nzt_l = nzt
843	dx_l = dx
844	dy_l = dy
845	DO l = maximum_grid_level, 1, -1
846	ddx2_mg(l) = 1.0_wp / dx_l**2
847	ddy2_mg(l) = 1.0_wp / dy_l**2
848	DO k = nzb+1, nzt_l
849	f2_mg(k,l) = rho_air_zw_mg(k,l) / ( dzu_mg(k+1,l) * dzw_mg(k,l) )
850	f3_mg(k,l) = rho_air_zw_mg(k-1,l) / ( dzu_mg(k,l) * dzw_mg(k,l) )
851	f1_mg(k,l) = 2.0_wp * ( ddx2_mg(l) + ddy2_mg(l) ) &
852	* rho_air_mg(k,l) + f2_mg(k,l) + f3_mg(k,l)
853	ENDDO
854	nzt_l = nzt_l / 2
855	dx_l = dx_l * 2.0_wp
856	dy_l = dy_l * 2.0_wp
857	ENDDO
858
859	ENDIF
860
861	!
862	!-- 3D-array for storing the dissipation, needed for calculating the sgs
863	!-- particle velocities
864	IF ( use_sgs_for_particles .OR. wang_kernel .OR. collision_turbulence )&
865	THEN
866	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
867	ENDIF
868
869	!
870	!-- 1D-array for large scale subsidence velocity
871	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
872	ALLOCATE ( w_subs(nzb:nzt+1) )
873	w_subs = 0.0_wp
874	ENDIF
875
876	!
877	!-- Arrays to store velocity data from t-dt and the phase speeds which
878	!-- are needed for radiation boundary conditions
879	IF ( outflow_l ) THEN
880	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
881	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
882	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
883	ENDIF
884	IF ( outflow_r ) THEN
885	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
886	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
887	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
888	ENDIF
889	IF ( outflow_l .OR. outflow_r ) THEN
890	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
891	c_w(nzb:nzt+1,nysg:nyng) )
892	ENDIF
893	IF ( outflow_s ) THEN
894	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
895	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
896	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
897	ENDIF
898	IF ( outflow_n ) THEN
899	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
900	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
901	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
902	ENDIF
903	IF ( outflow_s .OR. outflow_n ) THEN
904	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
905	c_w(nzb:nzt+1,nxlg:nxrg) )
906	ENDIF
907	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
908	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
909	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
910	ENDIF
911
912
913	#if ! defined( __nopointer )
914	!
915	!-- Initial assignment of the pointers
916	e => e_1; e_p => e_2; te_m => e_3
917	IF ( .NOT. neutral ) THEN
918	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
919	ELSE
920	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
921	ENDIF
922	u => u_1; u_p => u_2; tu_m => u_3
923	v => v_1; v_p => v_2; tv_m => v_3
924	w => w_1; w_p => w_2; tw_m => w_3
925
926	IF ( humidity ) THEN
927	q => q_1; q_p => q_2; tq_m => q_3
928	IF ( humidity ) THEN
929	vpt => vpt_1
930	IF ( cloud_physics ) THEN
931	ql => ql_1
932	IF ( .NOT. microphysics_morrison ) THEN
933	qc => qc_1
934	ENDIF
935	IF ( microphysics_morrison ) THEN
936	qc => qc_1; qc_p => qc_2; tqc_m => qc_3
937	nc => nc_1; nc_p => nc_2; tnc_m => nc_3
938	ENDIF
939	IF ( microphysics_seifert ) THEN
940	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
941	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
942	ENDIF
943	ENDIF
944	ENDIF
945	IF ( cloud_droplets ) THEN
946	ql => ql_1
947	ql_c => ql_2
948	ENDIF
949	ENDIF
950
951	IF ( passive_scalar ) THEN
952	s => s_1; s_p => s_2; ts_m => s_3
953	ENDIF
954
955	IF ( ocean ) THEN
956	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
957	ENDIF
958	#endif
959	!
960	!-- Initialize wall arrays
961	CALL init_surface_arrays
962	!
963	!-- Allocate land surface model arrays
964	IF ( land_surface ) THEN
965	CALL lsm_init_arrays
966	ENDIF
967
968	!
969	!-- Allocate wind turbine model arrays
970	IF ( wind_turbine ) THEN
971	CALL wtm_init_arrays
972	ENDIF
973
974	!
975	!-- Initialize virtual flight measurements
976	IF ( virtual_flight ) THEN
977	CALL flight_init
978	ENDIF
979
980	!
981	!-- Initialize nudging if required
982	IF ( nudging ) THEN
983	CALL nudge_init
984	ENDIF
985
986	!
987	!-- Initialize reading of large scale forcing from external file - if required
988	IF ( large_scale_forcing ) THEN
989	CALL lsf_init
990	ENDIF
991
992	!
993	!-- Allocate arrays containing the RK coefficient for calculation of
994	!-- perturbation pressure and turbulent fluxes. At this point values are
995	!-- set for pressure calculation during initialization (where no timestep
996	!-- is done). Further below the values needed within the timestep scheme
997	!-- will be set.
998	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
999	weight_pres(1:intermediate_timestep_count_max) )
1000	weight_substep = 1.0_wp
1001	weight_pres = 1.0_wp
1002	intermediate_timestep_count = 0 ! needed when simulated_time = 0.0
1003
1004	CALL location_message( 'finished', .TRUE. )
1005
1006	!
1007	!-- Initialize local summation arrays for routine flow_statistics.
1008	!-- This is necessary because they may not yet have been initialized when they
1009	!-- are called from flow_statistics (or - depending on the chosen model run -
1010	!-- are never initialized)
1011	sums_divnew_l = 0.0_wp
1012	sums_divold_l = 0.0_wp
1013	sums_l_l = 0.0_wp
1014	sums_wsts_bc_l = 0.0_wp
1015
1016	!
1017	!-- Initialize model variables
1018	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1019	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1020	!
1021	!-- First model run of a possible job queue.
1022	!-- Initial profiles of the variables must be computes.
1023	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
1024
1025	CALL location_message( 'initializing with 1D model profiles', .FALSE. )
1026	!
1027	!-- Use solutions of the 1D model as initial profiles,
1028	!-- start 1D model
1029	CALL init_1d_model
1030	!
1031	!-- Transfer initial profiles to the arrays of the 3D model
1032	DO i = nxlg, nxrg
1033	DO j = nysg, nyng
1034	e(:,j,i) = e1d
1035	kh(:,j,i) = kh1d
1036	km(:,j,i) = km1d
1037	pt(:,j,i) = pt_init
1038	u(:,j,i) = u1d
1039	v(:,j,i) = v1d
1040	ENDDO
1041	ENDDO
1042
1043	IF ( humidity ) THEN
1044	DO i = nxlg, nxrg
1045	DO j = nysg, nyng
1046	q(:,j,i) = q_init
1047	ENDDO
1048	ENDDO
1049	IF ( cloud_physics .AND. microphysics_morrison ) THEN
1050	DO i = nxlg, nxrg
1051	DO j = nysg, nyng
1052	qc(:,j,i) = 0.0_wp
1053	nc(:,j,i) = 0.0_wp
1054	ENDDO
1055	ENDDO
1056	ENDIF
1057	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1058	DO i = nxlg, nxrg
1059	DO j = nysg, nyng
1060	qr(:,j,i) = 0.0_wp
1061	nr(:,j,i) = 0.0_wp
1062	ENDDO
1063	ENDDO
1064	ENDIF
1065	ENDIF
1066
1067	IF ( passive_scalar ) THEN
1068	DO i = nxlg, nxrg
1069	DO j = nysg, nyng
1070	s(:,j,i) = s_init
1071	ENDDO
1072	ENDDO
1073	ENDIF
1074
1075	IF ( .NOT. constant_diffusion ) THEN
1076	DO i = nxlg, nxrg
1077	DO j = nysg, nyng
1078	e(:,j,i) = e1d
1079	ENDDO
1080	ENDDO
1081	!
1082	!-- Store initial profiles for output purposes etc.
1083	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
1084
1085	ELSE
1086	e = 0.0_wp ! must be set, because used in
1087	ENDIF
1088	!
1089	!-- Inside buildings set velocities back to zero
1090	IF ( topography /= 'flat' ) THEN
1091	DO i = nxlg, nxrg
1092	DO j = nysg, nyng
1093	DO k = nzb, nzt
1094	u(k,j,i) = MERGE( u(k,j,i), 0.0_wp, &
1095	BTEST( wall_flags_0(k,j,i), 1 ) )
1096	v(k,j,i) = MERGE( v(k,j,i), 0.0_wp, &
1097	BTEST( wall_flags_0(k,j,i), 2 ) )
1098	ENDDO
1099	ENDDO
1100	ENDDO
1101
1102	!
1103	!-- WARNING: The extra boundary conditions set after running the
1104	!-- ------- 1D model impose an error on the divergence one layer
1105	!-- below the topography; need to correct later
1106	!-- ATTENTION: Provisional correction for Piacsek & Williams
1107	!-- --------- advection scheme: keep u and v zero one layer below
1108	!-- the topography.
1109	IF ( ibc_uv_b == 1 ) THEN
1110	!
1111	!-- Neumann condition
1112	DO i = nxl-1, nxr+1
1113	DO j = nys-1, nyn+1
1114	u(nzb,j,i) = u(nzb+1,j,i)
1115	v(nzb,j,i) = v(nzb+1,j,i)
1116	ENDDO
1117	ENDDO
1118
1119	ENDIF
1120
1121	ENDIF
1122
1123	CALL location_message( 'finished', .TRUE. )
1124
1125	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
1126	THEN
1127
1128	CALL location_message( 'initializing with constant profiles', .FALSE. )
1129	!
1130	!-- Overwrite initial profiles in case of synthetic turbulence generator
1131	IF( use_synthetic_turbulence_generator ) THEN
1132	CALL stg_init
1133	ENDIF
1134
1135	!
1136	!-- Use constructed initial profiles (velocity constant with height,
1137	!-- temperature profile with constant gradient)
1138	DO i = nxlg, nxrg
1139	DO j = nysg, nyng
1140	pt(:,j,i) = pt_init
1141	u(:,j,i) = u_init
1142	v(:,j,i) = v_init
1143	ENDDO
1144	ENDDO
1145
1146	!
1147	!-- Set initial horizontal velocities at the lowest computational grid
1148	!-- levels to zero in order to avoid too small time steps caused by the
1149	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
1150	!-- in the limiting formula!).
1151	IF ( ibc_uv_b /= 1 ) THEN
1152	DO i = nxlg, nxrg
1153	DO j = nysg, nyng
1154	DO k = nzb, nzt
1155	u(k,j,i) = MERGE( u(k,j,i), 0.0_wp, &
1156	BTEST( wall_flags_0(k,j,i), 20 ) )
1157	v(k,j,i) = MERGE( v(k,j,i), 0.0_wp, &
1158	BTEST( wall_flags_0(k,j,i), 21 ) )
1159	ENDDO
1160	ENDDO
1161	ENDDO
1162	ENDIF
1163
1164	IF ( humidity ) THEN
1165	DO i = nxlg, nxrg
1166	DO j = nysg, nyng
1167	q(:,j,i) = q_init
1168	ENDDO
1169	ENDDO
1170	IF ( cloud_physics .AND. microphysics_morrison ) THEN
1171	DO i = nxlg, nxrg
1172	DO j = nysg, nyng
1173	qc(:,j,i) = 0.0_wp
1174	nc(:,j,i) = 0.0_wp
1175	ENDDO
1176	ENDDO
1177	ENDIF
1178
1179	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1180	DO i = nxlg, nxrg
1181	DO j = nysg, nyng
1182	qr(:,j,i) = 0.0_wp
1183	nr(:,j,i) = 0.0_wp
1184	ENDDO
1185	ENDDO
1186	ENDIF
1187
1188	ENDIF
1189
1190	IF ( passive_scalar ) THEN
1191	DO i = nxlg, nxrg
1192	DO j = nysg, nyng
1193	s(:,j,i) = s_init
1194	ENDDO
1195	ENDDO
1196	ENDIF
1197
1198	IF ( ocean ) THEN
1199	DO i = nxlg, nxrg
1200	DO j = nysg, nyng
1201	sa(:,j,i) = sa_init
1202	ENDDO
1203	ENDDO
1204	ENDIF
1205
1206	IF ( constant_diffusion ) THEN
1207	km = km_constant
1208	kh = km / prandtl_number
1209	e = 0.0_wp
1210	ELSEIF ( e_init > 0.0_wp ) THEN
1211	DO k = nzb+1, nzt
1212	km(k,:,:) = 0.1_wp * l_grid(k) * SQRT( e_init )
1213	ENDDO
1214	km(nzb,:,:) = km(nzb+1,:,:)
1215	km(nzt+1,:,:) = km(nzt,:,:)
1216	kh = km / prandtl_number
1217	e = e_init
1218	ELSE
1219	IF ( .NOT. ocean ) THEN
1220	kh = 0.01_wp ! there must exist an initial diffusion, because
1221	km = 0.01_wp ! otherwise no TKE would be produced by the
1222	! production terms, as long as not yet
1223	! e = (u/cm)*2 at k=nzb+1
1224	ELSE
1225	kh = 0.00001_wp
1226	km = 0.00001_wp
1227	ENDIF
1228	e = 0.0_wp
1229	ENDIF
1230	!
1231	!-- Compute initial temperature field and other constants used in case
1232	!-- of a sloping surface
1233	IF ( sloping_surface ) CALL init_slope
1234
1235	CALL location_message( 'finished', .TRUE. )
1236
1237	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
1238	THEN
1239
1240	CALL location_message( 'initializing by user', .FALSE. )
1241	!
1242	!-- Initialization will completely be done by the user
1243	CALL user_init_3d_model
1244
1245	CALL location_message( 'finished', .TRUE. )
1246
1247	ENDIF
1248
1249	CALL location_message( 'initializing statistics, boundary conditions, etc.', &
1250	.FALSE. )
1251
1252	!
1253	!-- Bottom boundary
1254	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
1255	u(nzb,:,:) = 0.0_wp
1256	v(nzb,:,:) = 0.0_wp
1257	ENDIF
1258
1259	!
1260	!-- Apply channel flow boundary condition
1261	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
1262	u(nzt+1,:,:) = 0.0_wp
1263	v(nzt+1,:,:) = 0.0_wp
1264	ENDIF
1265
1266	!
1267	!-- Calculate virtual potential temperature
1268	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
1269
1270	!
1271	!-- Store initial profiles for output purposes etc.
1272	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
1273	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
1274	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
1275	hom(nzb,1,5,:) = 0.0_wp
1276	hom(nzb,1,6,:) = 0.0_wp
1277	ENDIF
1278	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1279	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
1280	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
1281
1282	IF ( ocean ) THEN
1283	!
1284	!-- Store initial salinity profile
1285	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
1286	ENDIF
1287
1288	IF ( humidity ) THEN
1289	!
1290	!-- Store initial profile of total water content, virtual potential
1291	!-- temperature
1292	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1293	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
1294	IF ( cloud_physics .OR. cloud_droplets ) THEN
1295	!
1296	!-- Store initial profile of specific humidity and potential
1297	!-- temperature
1298	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1299	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1300	ENDIF
1301	ENDIF
1302
1303	IF ( passive_scalar ) THEN
1304	!
1305	!-- Store initial scalar profile
1306	hom(:,1,121,:) = SPREAD( s(:,nys,nxl), 2, statistic_regions+1 )
1307	ENDIF
1308
1309	!
1310	!-- Initialize the random number generators (from numerical recipes)
1311	CALL random_function_ini
1312
1313	IF ( random_generator == 'random-parallel' ) THEN
1314	CALL init_parallel_random_generator(nx, ny, nys, nyn, nxl, nxr)
1315	ENDIF
1316	!
1317	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1318	!-- the reference state will be set (overwritten) in init_ocean)
1319	IF ( use_single_reference_value ) THEN
1320	IF ( .NOT. humidity ) THEN
1321	ref_state(:) = pt_reference
1322	ELSE
1323	ref_state(:) = vpt_reference
1324	ENDIF
1325	ELSE
1326	IF ( .NOT. humidity ) THEN
1327	ref_state(:) = pt_init(:)
1328	ELSE
1329	ref_state(:) = vpt(:,nys,nxl)
1330	ENDIF
1331	ENDIF
1332
1333	!
1334	!-- For the moment, vertical velocity is zero
1335	w = 0.0_wp
1336
1337	!
1338	!-- Initialize array sums (must be defined in first call of pres)
1339	sums = 0.0_wp
1340
1341	!
1342	!-- In case of iterative solvers, p must get an initial value
1343	IF ( psolver(1:9) == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
1344
1345	!
1346	!-- Treating cloud physics, liquid water content and precipitation amount
1347	!-- are zero at beginning of the simulation
1348	IF ( cloud_physics ) THEN
1349	ql = 0.0_wp
1350	qc = 0.0_wp
1351
1352	precipitation_amount = 0.0_wp
1353	ENDIF
1354	!
1355	!-- Impose vortex with vertical axis on the initial velocity profile
1356	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1357	CALL init_rankine
1358	ENDIF
1359
1360	!
1361	!-- Impose temperature anomaly (advection test only)
1362	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1363	CALL init_pt_anomaly
1364	ENDIF
1365
1366	!
1367	!-- If required, change the surface temperature at the start of the 3D run
1368	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
1369	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1370	ENDIF
1371
1372	!
1373	!-- If required, change the surface humidity/scalar at the start of the 3D
1374	!-- run
1375	IF ( humidity .AND. q_surface_initial_change /= 0.0_wp ) &
1376	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1377
1378	IF ( passive_scalar .AND. s_surface_initial_change /= 0.0_wp ) &
1379	s(nzb,:,:) = s(nzb,:,:) + s_surface_initial_change
1380
1381
1382	!
1383	!-- Initialize old and new time levels.
1384	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
1385	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1386
1387	IF ( humidity ) THEN
1388	tq_m = 0.0_wp
1389	q_p = q
1390	IF ( cloud_physics .AND. microphysics_morrison ) THEN
1391	tqc_m = 0.0_wp
1392	qc_p = qc
1393	tnc_m = 0.0_wp
1394	nc_p = nc
1395	ENDIF
1396	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1397	tqr_m = 0.0_wp
1398	qr_p = qr
1399	tnr_m = 0.0_wp
1400	nr_p = nr
1401	ENDIF
1402	ENDIF
1403
1404	IF ( passive_scalar ) THEN
1405	ts_m = 0.0_wp
1406	s_p = s
1407	ENDIF
1408
1409	IF ( ocean ) THEN
1410	tsa_m = 0.0_wp
1411	sa_p = sa
1412	ENDIF
1413
1414	CALL location_message( 'finished', .TRUE. )
1415
1416	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1417	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1418	THEN
1419
1420	CALL location_message( 'initializing in case of restart / cyclic_fill', &
1421	.FALSE. )
1422	!
1423	!-- Initialize surface elements and its attributes, e.g. heat- and
1424	!-- momentumfluxes, roughness, scaling parameters. As number of surface
1425	!-- elements might be different between runs, e.g. in case of cyclic fill,
1426	!-- and not all surface elements are read, surface elements need to be
1427	!-- initialized before.
1428	CALL init_surfaces
1429	!
1430	!-- When reading data for cyclic fill of 3D prerun data files, read
1431	!-- some of the global variables from the restart file which are required
1432	!-- for initializing the inflow
1433	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1434
1435	DO i = 0, io_blocks-1
1436	IF ( i == io_group ) THEN
1437	CALL read_parts_of_var_list
1438	CALL close_file( 13 )
1439	ENDIF
1440	#if defined( __parallel )
1441	CALL MPI_BARRIER( comm2d, ierr )
1442	#endif
1443	ENDDO
1444
1445	ENDIF
1446
1447	!
1448	!-- Read binary data from restart file
1449	DO i = 0, io_blocks-1
1450	IF ( i == io_group ) THEN
1451	CALL read_3d_binary
1452	ENDIF
1453	#if defined( __parallel )
1454	CALL MPI_BARRIER( comm2d, ierr )
1455	#endif
1456	ENDDO
1457
1458	!
1459	!-- Initialization of the turbulence recycling method
1460	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1461	turbulent_inflow ) THEN
1462	!
1463	!-- First store the profiles to be used at the inflow.
1464	!-- These profiles are the (temporally) and horizontally averaged vertical
1465	!-- profiles from the prerun. Alternatively, prescribed profiles
1466	!-- for u,v-components can be used.
1467	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,7) )
1468
1469	IF ( use_prescribed_profile_data ) THEN
1470	mean_inflow_profiles(:,1) = u_init ! u
1471	mean_inflow_profiles(:,2) = v_init ! v
1472	ELSE
1473	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1474	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1475	ENDIF
1476	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1477	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1478	IF ( humidity ) &
1479	mean_inflow_profiles(:,6) = hom_sum(:,41,0) ! q
1480	IF ( passive_scalar ) &
1481	mean_inflow_profiles(:,7) = hom_sum(:,115,0) ! s
1482
1483	!
1484	!-- If necessary, adjust the horizontal flow field to the prescribed
1485	!-- profiles
1486	IF ( use_prescribed_profile_data ) THEN
1487	DO i = nxlg, nxrg
1488	DO j = nysg, nyng
1489	DO k = nzb, nzt+1
1490	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1491	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1492	ENDDO
1493	ENDDO
1494	ENDDO
1495	ENDIF
1496
1497	!
1498	!-- Use these mean profiles at the inflow (provided that Dirichlet
1499	!-- conditions are used)
1500	IF ( inflow_l ) THEN
1501	DO j = nysg, nyng
1502	DO k = nzb, nzt+1
1503	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1504	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1505	w(k,j,nxlg:-1) = 0.0_wp
1506	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1507	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1508	IF ( humidity ) &
1509	q(k,j,nxlg:-1) = mean_inflow_profiles(k,6)
1510	IF ( passive_scalar ) &
1511	s(k,j,nxlg:-1) = mean_inflow_profiles(k,7)
1512	ENDDO
1513	ENDDO
1514	ENDIF
1515
1516	!
1517	!-- Calculate the damping factors to be used at the inflow. For a
1518	!-- turbulent inflow the turbulent fluctuations have to be limited
1519	!-- vertically because otherwise the turbulent inflow layer will grow
1520	!-- in time.
1521	IF ( inflow_damping_height == 9999999.9_wp ) THEN
1522	!
1523	!-- Default: use the inversion height calculated by the prerun; if
1524	!-- this is zero, inflow_damping_height must be explicitly
1525	!-- specified.
1526	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
1527	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1528	ELSE
1529	WRITE( message_string, * ) 'inflow_damping_height must be ', &
1530	'explicitly specified because&the inversion height ', &
1531	'calculated by the prerun is zero.'
1532	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1533	ENDIF
1534
1535	ENDIF
1536
1537	IF ( inflow_damping_width == 9999999.9_wp ) THEN
1538	!
1539	!-- Default for the transition range: one tenth of the undamped
1540	!-- layer
1541	inflow_damping_width = 0.1_wp * inflow_damping_height
1542
1543	ENDIF
1544
1545	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1546
1547	DO k = nzb, nzt+1
1548
1549	IF ( zu(k) <= inflow_damping_height ) THEN
1550	inflow_damping_factor(k) = 1.0_wp
1551	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1552	inflow_damping_factor(k) = 1.0_wp - &
1553	( zu(k) - inflow_damping_height ) / &
1554	inflow_damping_width
1555	ELSE
1556	inflow_damping_factor(k) = 0.0_wp
1557	ENDIF
1558
1559	ENDDO
1560
1561	ENDIF
1562
1563	!
1564	!-- Inside buildings set velocities and TKE back to zero
1565	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1566	topography /= 'flat' ) THEN
1567	!
1568	!-- Inside buildings set velocities and TKE back to zero.
1569	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1570	!-- maybe revise later.
1571	DO i = nxlg, nxrg
1572	DO j = nysg, nyng
1573	DO k = nzb, nzt
1574	u(k,j,i) = MERGE( u(k,j,i), 0.0_wp, &
1575	BTEST( wall_flags_0(k,j,i), 1 ) )
1576	v(k,j,i) = MERGE( v(k,j,i), 0.0_wp, &
1577	BTEST( wall_flags_0(k,j,i), 2 ) )
1578	w(k,j,i) = MERGE( w(k,j,i), 0.0_wp, &
1579	BTEST( wall_flags_0(k,j,i), 3 ) )
1580	e(k,j,i) = MERGE( e(k,j,i), 0.0_wp, &
1581	BTEST( wall_flags_0(k,j,i), 0 ) )
1582	tu_m(k,j,i) = MERGE( tu_m(k,j,i), 0.0_wp, &
1583	BTEST( wall_flags_0(k,j,i), 1 ) )
1584	tv_m(k,j,i) = MERGE( tv_m(k,j,i), 0.0_wp, &
1585	BTEST( wall_flags_0(k,j,i), 2 ) )
1586	tw_m(k,j,i) = MERGE( tw_m(k,j,i), 0.0_wp, &
1587	BTEST( wall_flags_0(k,j,i), 3 ) )
1588	te_m(k,j,i) = MERGE( te_m(k,j,i), 0.0_wp, &
1589	BTEST( wall_flags_0(k,j,i), 0 ) )
1590	tpt_m(k,j,i) = MERGE( tpt_m(k,j,i), 0.0_wp, &
1591	BTEST( wall_flags_0(k,j,i), 0 ) )
1592	ENDDO
1593	ENDDO
1594	ENDDO
1595
1596	ENDIF
1597
1598	!
1599	!-- Calculate initial temperature field and other constants used in case
1600	!-- of a sloping surface
1601	IF ( sloping_surface ) CALL init_slope
1602
1603	!
1604	!-- Initialize new time levels (only done in order to set boundary values
1605	!-- including ghost points)
1606	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1607	IF ( humidity ) THEN
1608	q_p = q
1609	IF ( cloud_physics .AND. microphysics_morrison ) THEN
1610	qc_p = qc
1611	nc_p = nc
1612	ENDIF
1613	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1614	qr_p = qr
1615	nr_p = nr
1616	ENDIF
1617	ENDIF
1618	IF ( passive_scalar ) s_p = s
1619	IF ( ocean ) sa_p = sa
1620
1621	!
1622	!-- Allthough tendency arrays are set in prognostic_equations, they have
1623	!-- have to be predefined here because they are used (but multiplied with 0)
1624	!-- there before they are set.
1625	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
1626	IF ( humidity ) THEN
1627	tq_m = 0.0_wp
1628	IF ( cloud_physics .AND. microphysics_morrison ) THEN
1629	tqc_m = 0.0_wp
1630	tnc_m = 0.0_wp
1631	ENDIF
1632	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1633	tqr_m = 0.0_wp
1634	tnr_m = 0.0_wp
1635	ENDIF
1636	ENDIF
1637	IF ( passive_scalar ) ts_m = 0.0_wp
1638	IF ( ocean ) tsa_m = 0.0_wp
1639	!
1640	!-- Initialize synthetic turbulence generator in case of restart.
1641	IF ( TRIM( initializing_actions ) == 'read_restart_data' .AND. &
1642	use_synthetic_turbulence_generator ) CALL stg_init
1643
1644	CALL location_message( 'finished', .TRUE. )
1645
1646	ELSE
1647	!
1648	!-- Actually this part of the programm should not be reached
1649	message_string = 'unknown initializing problem'
1650	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1651	ENDIF
1652
1653
1654	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1655	!
1656	!-- Initialize old timelevels needed for radiation boundary conditions
1657	IF ( outflow_l ) THEN
1658	u_m_l(:,:,:) = u(:,:,1:2)
1659	v_m_l(:,:,:) = v(:,:,0:1)
1660	w_m_l(:,:,:) = w(:,:,0:1)
1661	ENDIF
1662	IF ( outflow_r ) THEN
1663	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1664	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1665	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1666	ENDIF
1667	IF ( outflow_s ) THEN
1668	u_m_s(:,:,:) = u(:,0:1,:)
1669	v_m_s(:,:,:) = v(:,1:2,:)
1670	w_m_s(:,:,:) = w(:,0:1,:)
1671	ENDIF
1672	IF ( outflow_n ) THEN
1673	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1674	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1675	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1676	ENDIF
1677
1678	ENDIF
1679
1680	!
1681	!-- Calculate the initial volume flow at the right and north boundary
1682	IF ( conserve_volume_flow ) THEN
1683
1684	IF ( use_prescribed_profile_data ) THEN
1685
1686	volume_flow_initial_l = 0.0_wp
1687	volume_flow_area_l = 0.0_wp
1688
1689	IF ( nxr == nx ) THEN
1690	DO j = nys, nyn
1691	DO k = nzb+1, nzt
1692	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1693	u_init(k) * dzw(k) &
1694	* MERGE( 1.0_wp, 0.0_wp, &
1695	BTEST( wall_flags_0(k,j,nxr), 1 )&
1696	)
1697
1698	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
1699	* MERGE( 1.0_wp, 0.0_wp, &
1700	BTEST( wall_flags_0(k,j,nxr), 1 )&
1701	)
1702	ENDDO
1703	ENDDO
1704	ENDIF
1705
1706	IF ( nyn == ny ) THEN
1707	DO i = nxl, nxr
1708	DO k = nzb+1, nzt
1709	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1710	v_init(k) * dzw(k) &
1711	* MERGE( 1.0_wp, 0.0_wp, &
1712	BTEST( wall_flags_0(k,nyn,i), 2 )&
1713	)
1714	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
1715	* MERGE( 1.0_wp, 0.0_wp, &
1716	BTEST( wall_flags_0(k,nyn,i), 2 )&
1717	)
1718	ENDDO
1719	ENDDO
1720	ENDIF
1721
1722	#if defined( __parallel )
1723	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1724	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1725	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1726	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1727
1728	#else
1729	volume_flow_initial = volume_flow_initial_l
1730	volume_flow_area = volume_flow_area_l
1731	#endif
1732
1733	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1734
1735	volume_flow_initial_l = 0.0_wp
1736	volume_flow_area_l = 0.0_wp
1737
1738	IF ( nxr == nx ) THEN
1739	DO j = nys, nyn
1740	DO k = nzb+1, nzt
1741	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1742	hom_sum(k,1,0) * dzw(k) &
1743	* MERGE( 1.0_wp, 0.0_wp, &
1744	BTEST( wall_flags_0(k,j,nx), 1 ) &
1745	)
1746	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
1747	* MERGE( 1.0_wp, 0.0_wp, &
1748	BTEST( wall_flags_0(k,j,nx), 1 ) &
1749	)
1750	ENDDO
1751	ENDDO
1752	ENDIF
1753
1754	IF ( nyn == ny ) THEN
1755	DO i = nxl, nxr
1756	DO k = nzb+1, nzt
1757	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1758	hom_sum(k,2,0) * dzw(k) &
1759	* MERGE( 1.0_wp, 0.0_wp, &
1760	BTEST( wall_flags_0(k,ny,i), 2 ) &
1761	)
1762	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
1763	* MERGE( 1.0_wp, 0.0_wp, &
1764	BTEST( wall_flags_0(k,ny,i), 2 ) &
1765	)
1766	ENDDO
1767	ENDDO
1768	ENDIF
1769
1770	#if defined( __parallel )
1771	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1772	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1773	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1774	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1775
1776	#else
1777	volume_flow_initial = volume_flow_initial_l
1778	volume_flow_area = volume_flow_area_l
1779	#endif
1780
1781	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1782
1783	volume_flow_initial_l = 0.0_wp
1784	volume_flow_area_l = 0.0_wp
1785
1786	IF ( nxr == nx ) THEN
1787	DO j = nys, nyn
1788	DO k = nzb+1, nzt
1789	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1790	u(k,j,nx) * dzw(k) &
1791	* MERGE( 1.0_wp, 0.0_wp, &
1792	BTEST( wall_flags_0(k,j,nx), 1 ) &
1793	)
1794	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
1795	* MERGE( 1.0_wp, 0.0_wp, &
1796	BTEST( wall_flags_0(k,j,nx), 1 ) &
1797	)
1798	ENDDO
1799	ENDDO
1800	ENDIF
1801
1802	IF ( nyn == ny ) THEN
1803	DO i = nxl, nxr
1804	DO k = nzb+1, nzt
1805	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1806	v(k,ny,i) * dzw(k) &
1807	* MERGE( 1.0_wp, 0.0_wp, &
1808	BTEST( wall_flags_0(k,ny,i), 2 ) &
1809	)
1810	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
1811	* MERGE( 1.0_wp, 0.0_wp, &
1812	BTEST( wall_flags_0(k,ny,i), 2 ) &
1813	)
1814	ENDDO
1815	ENDDO
1816	ENDIF
1817
1818	#if defined( __parallel )
1819	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1820	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1821	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1822	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1823
1824	#else
1825	volume_flow_initial = volume_flow_initial_l
1826	volume_flow_area = volume_flow_area_l
1827	#endif
1828
1829	ENDIF
1830
1831	!
1832	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1833	!-- from u\|v_bulk instead
1834	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1835	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1836	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1837	ENDIF
1838
1839	ENDIF
1840	!
1841	!-- Initialize surface elements and its attributes, e.g. heat- and
1842	!-- momentumfluxes, roughness, scaling parameters.
1843	!-- This is already done in case of restart data.
1844	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1845	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1846	CALL init_surfaces
1847	!
1848	!-- Finally, if random_heatflux is set, disturb shf at horizontal
1849	!-- surfaces. Actually, this should be done in surface_mod, where all other
1850	!-- initializations of surface quantities are done. However, this
1851	!-- would create a ring dependency, hence, it is done here. Maybe delete
1852	!-- disturb_heatflux and tranfer the respective code directly into the
1853	!-- initialization in surface_mod.
1854	IF ( use_surface_fluxes .AND. constant_heatflux .AND. &
1855	random_heatflux ) THEN
1856	IF ( surf_def_h(0)%ns >= 1 ) CALL disturb_heatflux( surf_def_h(0) )
1857	IF ( surf_lsm_h%ns >= 1 ) CALL disturb_heatflux( surf_lsm_h )
1858	IF ( surf_usm_h%ns >= 1 ) CALL disturb_heatflux( surf_usm_h )
1859	ENDIF
1860	ENDIF
1861
1862	!
1863	!-- Initialize surface forcing corresponding to large-scale forcing. Therein,
1864	!-- initialize heat-fluxes, etc. via datatype. Revise it later!
1865	IF ( large_scale_forcing .AND. lsf_surf ) THEN
1866	IF ( use_surface_fluxes .AND. constant_heatflux ) THEN
1867	CALL ls_forcing_surf ( simulated_time )
1868	ENDIF
1869	ENDIF
1870	!
1871	!-- Initialize quantities for special advections schemes
1872	CALL init_advec
1873
1874	!
1875	!-- Impose random perturbation on the horizontal velocity field and then
1876	!-- remove the divergences from the velocity field at the initial stage
1877	IF ( create_disturbances .AND. disturbance_energy_limit /= 0.0_wp .AND. &
1878	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1879	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1880
1881	CALL location_message( 'creating initial disturbances', .FALSE. )
1882	CALL disturb_field( 'u', tend, u )
1883	CALL disturb_field( 'v', tend, v )
1884	CALL location_message( 'finished', .TRUE. )
1885
1886	CALL location_message( 'calling pressure solver', .FALSE. )
1887	n_sor = nsor_ini
1888	CALL pres
1889	n_sor = nsor
1890	CALL location_message( 'finished', .TRUE. )
1891
1892	ENDIF
1893
1894	!
1895	!-- If required, initialize quantities needed for the plant canopy model
1896	IF ( plant_canopy ) THEN
1897	CALL location_message( 'initializing plant canopy model', .FALSE. )
1898	CALL pcm_init
1899	CALL location_message( 'finished', .TRUE. )
1900	ENDIF
1901
1902	!
1903	!-- If required, initialize dvrp-software
1904	IF ( dt_dvrp /= 9999999.9_wp ) CALL init_dvrp
1905
1906	IF ( ocean ) THEN
1907	!
1908	!-- Initialize quantities needed for the ocean model
1909	CALL init_ocean
1910
1911	ELSE
1912	!
1913	!-- Initialize quantities for handling cloud physics
1914	!-- This routine must be called before lpm_init, because
1915	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1916	!-- lpm_init) is not defined.
1917	CALL init_cloud_physics
1918	!
1919	!-- Initialize bulk cloud microphysics
1920	CALL microphysics_init
1921	ENDIF
1922
1923	!
1924	!-- If required, initialize particles
1925	IF ( particle_advection ) CALL lpm_init
1926
1927	!
1928	!-- If required, initialize quantities needed for the LSM
1929	IF ( land_surface ) THEN
1930	CALL location_message( 'initializing land surface model', .FALSE. )
1931	CALL lsm_init
1932	CALL location_message( 'finished', .TRUE. )
1933	ENDIF
1934
1935	!
1936	!-- Initialize surface layer (done after LSM as roughness length are required
1937	!-- for initialization
1938	IF ( constant_flux_layer ) THEN
1939	CALL location_message( 'initializing surface layer', .FALSE. )
1940	CALL init_surface_layer_fluxes
1941	CALL location_message( 'finished', .TRUE. )
1942	ENDIF
1943
1944	!
1945	!-- If required, initialize radiation model
1946	IF ( radiation ) THEN
1947	CALL location_message( 'initializing radiation model', .FALSE. )
1948	CALL radiation_init
1949	CALL location_message( 'finished', .TRUE. )
1950	ENDIF
1951
1952
1953	!
1954	!-- Temporary solution to add LSM and radiation time series to the default
1955	!-- output
1956	IF ( land_surface .OR. radiation ) THEN
1957	IF ( TRIM( radiation_scheme ) == 'rrtmg' ) THEN
1958	dots_num = dots_num + 15
1959	ELSE
1960	dots_num = dots_num + 11
1961	ENDIF
1962	ENDIF
1963
1964	!
1965	!-- If required, initialize urban surface model
1966	IF ( urban_surface ) THEN
1967	CALL location_message( 'initializing urban surface model', .FALSE. )
1968	CALL usm_init_urban_surface
1969	CALL location_message( 'finished', .TRUE. )
1970	ENDIF
1971
1972	!
1973	!-- If required, initialize quantities needed for the wind turbine model
1974	IF ( wind_turbine ) THEN
1975	CALL location_message( 'initializing wind turbine model', .FALSE. )
1976	CALL wtm_init
1977	CALL location_message( 'finished', .TRUE. )
1978	ENDIF
1979
1980
1981	!
1982	!-- Initialize the ws-scheme.
1983	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1984
1985	!
1986	!-- Setting weighting factors for calculation of perturbation pressure
1987	!-- and turbulent quantities from the RK substeps
1988	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1989
1990	weight_substep(1) = 1._wp/6._wp
1991	weight_substep(2) = 3._wp/10._wp
1992	weight_substep(3) = 8._wp/15._wp
1993
1994	weight_pres(1) = 1._wp/3._wp
1995	weight_pres(2) = 5._wp/12._wp
1996	weight_pres(3) = 1._wp/4._wp
1997
1998	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1999
2000	weight_substep(1) = 1._wp/2._wp
2001	weight_substep(2) = 1._wp/2._wp
2002
2003	weight_pres(1) = 1._wp/2._wp
2004	weight_pres(2) = 1._wp/2._wp
2005
2006	ELSE ! for Euler-method
2007
2008	weight_substep(1) = 1.0_wp
2009	weight_pres(1) = 1.0_wp
2010
2011	ENDIF
2012
2013	!
2014	!-- Initialize Rayleigh damping factors
2015	rdf = 0.0_wp
2016	rdf_sc = 0.0_wp
2017	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
2018	IF ( .NOT. ocean ) THEN
2019	DO k = nzb+1, nzt
2020	IF ( zu(k) >= rayleigh_damping_height ) THEN
2021	rdf(k) = rayleigh_damping_factor * &
2022	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
2023	/ ( zu(nzt) - rayleigh_damping_height ) ) &
2024	)**2
2025	ENDIF
2026	ENDDO
2027	ELSE
2028	DO k = nzt, nzb+1, -1
2029	IF ( zu(k) <= rayleigh_damping_height ) THEN
2030	rdf(k) = rayleigh_damping_factor * &
2031	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
2032	/ ( rayleigh_damping_height - zu(nzb+1) ) ) &
2033	)**2
2034	ENDIF
2035	ENDDO
2036	ENDIF
2037	ENDIF
2038	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
2039
2040	!
2041	!-- Initialize the starting level and the vertical smoothing factor used for
2042	!-- the external pressure gradient
2043	dp_smooth_factor = 1.0_wp
2044	IF ( dp_external ) THEN
2045	!
2046	!-- Set the starting level dp_level_ind_b only if it has not been set before
2047	!-- (e.g. in init_grid).
2048	IF ( dp_level_ind_b == 0 ) THEN
2049	ind_array = MINLOC( ABS( dp_level_b - zu ) )
2050	dp_level_ind_b = ind_array(1) - 1 + nzb
2051	! MINLOC uses lower array bound 1
2052	ENDIF
2053	IF ( dp_smooth ) THEN
2054	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
2055	DO k = dp_level_ind_b+1, nzt
2056	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
2057	( REAL( k - dp_level_ind_b, KIND=wp ) / &
2058	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
2059	ENDDO
2060	ENDIF
2061	ENDIF
2062
2063	!
2064	!-- Initialize damping zone for the potential temperature in case of
2065	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
2066	!-- at the inflow boundary and decreases to zero at pt_damping_width.
2067	ptdf_x = 0.0_wp
2068	ptdf_y = 0.0_wp
2069	IF ( bc_lr_dirrad ) THEN
2070	DO i = nxl, nxr
2071	IF ( ( i * dx ) < pt_damping_width ) THEN
2072	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
2073	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
2074	REAL( pt_damping_width, KIND=wp ) ) ) )**2
2075	ENDIF
2076	ENDDO
2077	ELSEIF ( bc_lr_raddir ) THEN
2078	DO i = nxl, nxr
2079	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
2080	ptdf_x(i) = pt_damping_factor * &
2081	SIN( pi * 0.5_wp * &
2082	( ( i - nx ) * dx + pt_damping_width ) / &
2083	REAL( pt_damping_width, KIND=wp ) )**2
2084	ENDIF
2085	ENDDO
2086	ELSEIF ( bc_ns_dirrad ) THEN
2087	DO j = nys, nyn
2088	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
2089	ptdf_y(j) = pt_damping_factor * &
2090	SIN( pi * 0.5_wp * &
2091	( ( j - ny ) * dy + pt_damping_width ) / &
2092	REAL( pt_damping_width, KIND=wp ) )**2
2093	ENDIF
2094	ENDDO
2095	ELSEIF ( bc_ns_raddir ) THEN
2096	DO j = nys, nyn
2097	IF ( ( j * dy ) < pt_damping_width ) THEN
2098	ptdf_y(j) = pt_damping_factor * &
2099	SIN( pi * 0.5_wp * &
2100	( pt_damping_width - j * dy ) / &
2101	REAL( pt_damping_width, KIND=wp ) )**2
2102	ENDIF
2103	ENDDO
2104	ENDIF
2105
2106	!
2107	!-- Pre-set masks for regional statistics. Default is the total model domain.
2108	!-- Ghost points are excluded because counting values at the ghost boundaries
2109	!-- would bias the statistics
2110	rmask = 1.0_wp
2111	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
2112	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
2113
2114	!
2115	!-- User-defined initializing actions. Check afterwards, if maximum number
2116	!-- of allowed timeseries is exceeded
2117	CALL user_init
2118
2119	IF ( dots_num > dots_max ) THEN
2120	WRITE( message_string, * ) 'number of time series quantities exceeds', &
2121	' its maximum of dots_max = ', dots_max, &
2122	' &Please increase dots_max in modules.f90.'
2123	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
2124	ENDIF
2125
2126	!
2127	!-- Input binary data file is not needed anymore. This line must be placed
2128	!-- after call of user_init!
2129	CALL close_file( 13 )
2130
2131	!
2132	!-- Compute total sum of active mask grid points
2133	!-- and the mean surface level height for each statistic region
2134	!-- ngp_2dh: number of grid points of a horizontal cross section through the
2135	!-- total domain
2136	!-- ngp_3d: number of grid points of the total domain
2137	ngp_2dh_outer_l = 0
2138	ngp_2dh_outer = 0
2139	ngp_2dh_s_inner_l = 0
2140	ngp_2dh_s_inner = 0
2141	ngp_2dh_l = 0
2142	ngp_2dh = 0
2143	ngp_3d_inner_l = 0.0_wp
2144	ngp_3d_inner = 0
2145	ngp_3d = 0
2146	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
2147
2148	mean_surface_level_height = 0.0_wp
2149	mean_surface_level_height_l = 0.0_wp
2150
2151	!
2152	!-- To do: New concept for these non-topography grid points!
2153	DO sr = 0, statistic_regions
2154	DO i = nxl, nxr
2155	DO j = nys, nyn
2156	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
2157	!
2158	!-- All xy-grid points
2159	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
2160	!
2161	!-- Determine mean surface-level height. In case of downward-
2162	!-- facing walls are present, more than one surface level exist.
2163	!-- In this case, use the lowest surface-level height.
2164	IF ( surf_def_h(0)%start_index(j,i) <= &
2165	surf_def_h(0)%end_index(j,i) ) THEN
2166	m = surf_def_h(0)%start_index(j,i)
2167	k = surf_def_h(0)%k(m)
2168	mean_surface_level_height_l(sr) = &
2169	mean_surface_level_height_l(sr) + zw(k-1)
2170	ENDIF
2171	IF ( surf_lsm_h%start_index(j,i) <= &
2172	surf_lsm_h%end_index(j,i) ) THEN
2173	m = surf_lsm_h%start_index(j,i)
2174	k = surf_lsm_h%k(m)
2175	mean_surface_level_height_l(sr) = &
2176	mean_surface_level_height_l(sr) + zw(k-1)
2177	ENDIF
2178	IF ( surf_usm_h%start_index(j,i) <= &
2179	surf_usm_h%end_index(j,i) ) THEN
2180	m = surf_usm_h%start_index(j,i)
2181	k = surf_usm_h%k(m)
2182	mean_surface_level_height_l(sr) = &
2183	mean_surface_level_height_l(sr) + zw(k-1)
2184	ENDIF
2185
2186	k_surf = k - 1
2187
2188	DO k = nzb, nzt+1
2189	!
2190	!-- xy-grid points above topography
2191	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + &
2192	MERGE( 1, 0, BTEST( wall_flags_0(k,j,i), 24 ) )
2193
2194	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + &
2195	MERGE( 1, 0, BTEST( wall_flags_0(k,j,i), 22 ) )
2196
2197	ENDDO
2198	!
2199	!-- All grid points of the total domain above topography
2200	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + ( nz - k_surf + 2 )
2201
2202
2203
2204	ENDIF
2205	ENDDO
2206	ENDDO
2207	ENDDO
2208
2209	sr = statistic_regions + 1
2210	#if defined( __parallel )
2211	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2212	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
2213	comm2d, ierr )
2214	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2215	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
2216	MPI_INTEGER, MPI_SUM, comm2d, ierr )
2217	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2218	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
2219	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
2220	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2221	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
2222	MPI_SUM, comm2d, ierr )
2223	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
2224	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2225	CALL MPI_ALLREDUCE( mean_surface_level_height_l(0), &
2226	mean_surface_level_height(0), sr, MPI_REAL, &
2227	MPI_SUM, comm2d, ierr )
2228	mean_surface_level_height = mean_surface_level_height / REAL( ngp_2dh )
2229	#else
2230	ngp_2dh = ngp_2dh_l
2231	ngp_2dh_outer = ngp_2dh_outer_l
2232	ngp_2dh_s_inner = ngp_2dh_s_inner_l
2233	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
2234	mean_surface_level_height = mean_surface_level_height_l / REAL( ngp_2dh_l )
2235	#endif
2236
2237	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
2238	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
2239
2240	!
2241	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
2242	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
2243	!-- the respective subdomain lie below the surface topography
2244	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
2245	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
2246	ngp_3d_inner(:) )
2247	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
2248
2249	DEALLOCATE( mean_surface_level_height_l, ngp_2dh_l, ngp_2dh_outer_l, &
2250	ngp_3d_inner_l, ngp_3d_inner_tmp )
2251
2252	CALL location_message( 'leaving init_3d_model', .TRUE. )
2253
2254	END SUBROUTINE init_3d_model

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