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source: palm/trunk/SOURCE/init_3d_model.f90 @ 2350

Last change on this file since 2350 was 2350, checked in by kanani, 7 years ago

bugfixes and workarounds for nopointer version

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

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