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source: palm/trunk/SOURCE/init_3d_model.f90 @ 2347

Last change on this file since 2347 was 2339, checked in by gronemeier, 7 years ago

corrected timestamp in header

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

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