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source: palm/trunk/SOURCE/init_3d_model.f90 @ 2025

Last change on this file since 2025 was 2012, checked in by kanani, 8 years ago

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1	!> @file init_3d_model.f90
2	!------------------------------------------------------------------------------!
3	! This file is part of PALM.
4	!
5	! PALM is free software: you can redistribute it and/or modify it under the
6	! terms of the GNU General Public License as published by the Free Software
7	! Foundation, either version 3 of the License, or (at your option) any later
8	! version.
9	!
10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13	!
14	! You should have received a copy of the GNU General Public License along with
15	! PALM. If not, see <http://www.gnu.org/licenses/>.
16	!
17	! Copyright 1997-2016 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! ------------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: init_3d_model.f90 2012 2016-09-19 17:31:38Z kanani $
27	!
28	! 2011 2016-09-19 17:29:57Z kanani
29	! Flag urban_surface is now defined in module control_parameters.
30	!
31	! 2007 2016-08-24 15:47:17Z kanani
32	! Added support for urban surface model,
33	! adjusted location_message in case of plant_canopy
34	!
35	! 2000 2016-08-20 18:09:15Z knoop
36	! Forced header and separation lines into 80 columns
37	!
38	! 1992 2016-08-12 15:14:59Z suehring
39	! Initializaton of scalarflux at model top
40	! Bugfixes in initialization of surface and top salinity flux, top scalar and
41	! humidity fluxes
42	!
43	! 1960 2016-07-12 16:34:24Z suehring
44	! Separate humidity and passive scalar
45	! Increase dimension for mean_inflow_profiles
46	! Remove inadvertent write-statement
47	! Bugfix, large-scale forcing is still not implemented for passive scalars
48	!
49	! 1957 2016-07-07 10:43:48Z suehring
50	! flight module added
51	!
52	! 1920 2016-05-30 10:50:15Z suehring
53	! Initialize us with very small number to avoid segmentation fault during
54	! calculation of Obukhov length
55	!
56	! 1918 2016-05-27 14:35:57Z raasch
57	! intermediate_timestep_count is set 0 instead 1 for first call of pres,
58	! bugfix: initialization of local sum arrays are moved to the beginning of the
59	! routine because otherwise results from pres are overwritten
60	!
61	! 1914 2016-05-26 14:44:07Z witha
62	! Added initialization of the wind turbine model
63	!
64	! 1878 2016-04-19 12:30:36Z hellstea
65	! The zeroth element of weight_pres removed as unnecessary
66	!
67	! 1849 2016-04-08 11:33:18Z hoffmann
68	! Adapted for modularization of microphysics.
69	! precipitation_amount, precipitation_rate, prr moved to arrays_3d.
70	! Initialization of nc_1d, nr_1d, pt_1d, qc_1d, qr_1d, q_1d moved to
71	! microphysics_init.
72	!
73	! 1845 2016-04-08 08:29:13Z raasch
74	! nzb_2d replaced by nzb_u\|v_inner
75	!
76	! 1833 2016-04-07 14:23:03Z raasch
77	! initialization of spectra quantities moved to spectra_mod
78	!
79	! 1831 2016-04-07 13:15:51Z hoffmann
80	! turbulence renamed collision_turbulence
81	!
82	! 1826 2016-04-07 12:01:39Z maronga
83	! Renamed radiation calls.
84	! Renamed canopy model calls.
85	!
86	! 1822 2016-04-07 07:49:42Z hoffmann
87	! icloud_scheme replaced by microphysics_*
88	!
89	! 1817 2016-04-06 15:44:20Z maronga
90	! Renamed lsm calls.
91	!
92	! 1815 2016-04-06 13:49:59Z raasch
93	! zero-settings for velocities inside topography re-activated (was deactivated
94	! in r1762)
95	!
96	! 1788 2016-03-10 11:01:04Z maronga
97	! Added z0q.
98	! Syntax layout improved.
99	!
100	! 1783 2016-03-06 18:36:17Z raasch
101	! netcdf module name changed + related changes
102	!
103	! 1764 2016-02-28 12:45:19Z raasch
104	! bugfix: increase size of volume_flow_area_l and volume_flow_initial_l by 1
105	!
106	! 1762 2016-02-25 12:31:13Z hellstea
107	! Introduction of nested domain feature
108	!
109	! 1738 2015-12-18 13:56:05Z raasch
110	! calculate mean surface level height for each statistic region
111	!
112	! 1734 2015-12-02 12:17:12Z raasch
113	! no initial disturbances in case that the disturbance energy limit has been
114	! set zero
115	!
116	! 1707 2015-11-02 15:24:52Z maronga
117	! Bugfix: transfer of Richardson number from 1D model to Obukhov length caused
118	! devision by zero in neutral stratification
119	!
120	! 1691 2015-10-26 16:17:44Z maronga
121	! Call to init_surface_layer added. rif is replaced by ol and zeta.
122	!
123	! 1682 2015-10-07 23:56:08Z knoop
124	! Code annotations made doxygen readable
125	!
126	! 1615 2015-07-08 18:49:19Z suehring
127	! Enable turbulent inflow for passive_scalar and humidity
128	!
129	! 1585 2015-04-30 07:05:52Z maronga
130	! Initialization of radiation code is now done after LSM initializtion
131	!
132	! 1575 2015-03-27 09:56:27Z raasch
133	! adjustments for psolver-queries
134	!
135	! 1551 2015-03-03 14:18:16Z maronga
136	! Allocation of land surface arrays is now done in the subroutine lsm_init_arrays,
137	! which is part of land_surface_model.
138	!
139	! 1507 2014-12-10 12:14:18Z suehring
140	! Bugfix: set horizontal velocity components to zero inside topography
141	!
142	! 1496 2014-12-02 17:25:50Z maronga
143	! Added initialization of the land surface and radiation schemes
144	!
145	! 1484 2014-10-21 10:53:05Z kanani
146	! Changes due to new module structure of the plant canopy model:
147	! canopy-related initialization (e.g. lad and canopy_heat_flux) moved to new
148	! subroutine init_plant_canopy within the module plant_canopy_model_mod,
149	! call of subroutine init_plant_canopy added.
150	!
151	! 1431 2014-07-15 14:47:17Z suehring
152	! var_d added, in order to normalize spectra.
153	!
154	! 1429 2014-07-15 12:53:45Z knoop
155	! Ensemble run capability added to parallel random number generator
156	!
157	! 1411 2014-05-16 18:01:51Z suehring
158	! Initial horizontal velocity profiles were not set to zero at the first vertical
159	! grid level in case of non-cyclic lateral boundary conditions.
160	!
161	! 1406 2014-05-16 13:47:01Z raasch
162	! bugfix: setting of initial velocities at k=1 to zero not in case of a
163	! no-slip boundary condition for uv
164	!
165	! 1402 2014-05-09 14:25:13Z raasch
166	! location messages modified
167	!
168	! 1400 2014-05-09 14:03:54Z knoop
169	! Parallel random number generator added
170	!
171	! 1384 2014-05-02 14:31:06Z raasch
172	! location messages added
173	!
174	! 1361 2014-04-16 15:17:48Z hoffmann
175	! tend_* removed
176	! Bugfix: w_subs is not allocated anymore if it is already allocated
177	!
178	! 1359 2014-04-11 17:15:14Z hoffmann
179	! module lpm_init_mod added to use statements, because lpm_init has become a
180	! module
181	!
182	! 1353 2014-04-08 15:21:23Z heinze
183	! REAL constants provided with KIND-attribute
184	!
185	! 1340 2014-03-25 19:45:13Z kanani
186	! REAL constants defined as wp-kind
187	!
188	! 1322 2014-03-20 16:38:49Z raasch
189	! REAL constants defined as wp-kind
190	! module interfaces removed
191	!
192	! 1320 2014-03-20 08:40:49Z raasch
193	! ONLY-attribute added to USE-statements,
194	! kind-parameters added to all INTEGER and REAL declaration statements,
195	! kinds are defined in new module kinds,
196	! revision history before 2012 removed,
197	! comment fields (!:) to be used for variable explanations added to
198	! all variable declaration statements
199	!
200	! 1316 2014-03-17 07:44:59Z heinze
201	! Bugfix: allocation of w_subs
202	!
203	! 1299 2014-03-06 13:15:21Z heinze
204	! Allocate w_subs due to extension of large scale subsidence in combination
205	! with large scale forcing data (LSF_DATA)
206	!
207	! 1241 2013-10-30 11:36:58Z heinze
208	! Overwrite initial profiles in case of nudging
209	! Inititialize shf and qsws in case of large_scale_forcing
210	!
211	! 1221 2013-09-10 08:59:13Z raasch
212	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
213	! copy
214	!
215	! 1212 2013-08-15 08:46:27Z raasch
216	! array tri is allocated and included in data copy statement
217	!
218	! 1195 2013-07-01 12:27:57Z heinze
219	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
220	!
221	! 1179 2013-06-14 05:57:58Z raasch
222	! allocate and set ref_state to be used in buoyancy terms
223	!
224	! 1171 2013-05-30 11:27:45Z raasch
225	! diss array is allocated with full size if accelerator boards are used
226	!
227	! 1159 2013-05-21 11:58:22Z fricke
228	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
229	!
230	! 1153 2013-05-10 14:33:08Z raasch
231	! diss array is allocated with dummy elements even if it is not needed
232	! (required by PGI 13.4 / CUDA 5.0)
233	!
234	! 1115 2013-03-26 18:16:16Z hoffmann
235	! unused variables removed
236	!
237	! 1113 2013-03-10 02:48:14Z raasch
238	! openACC directive modified
239	!
240	! 1111 2013-03-08 23:54:10Z raasch
241	! openACC directives added for pres
242	! array diss allocated only if required
243	!
244	! 1092 2013-02-02 11:24:22Z raasch
245	! unused variables removed
246	!
247	! 1065 2012-11-22 17:42:36Z hoffmann
248	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
249	!
250	! 1053 2012-11-13 17:11:03Z hoffmann
251	! allocation and initialisation of necessary data arrays for the two-moment
252	! cloud physics scheme the two new prognostic equations (nr, qr):
253	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
254	! +tend_*, prr
255	!
256	! 1036 2012-10-22 13:43:42Z raasch
257	! code put under GPL (PALM 3.9)
258	!
259	! 1032 2012-10-21 13:03:21Z letzel
260	! save memory by not allocating pt_2 in case of neutral = .T.
261	!
262	! 1025 2012-10-07 16:04:41Z letzel
263	! bugfix: swap indices of mask for ghost boundaries
264	!
265	! 1015 2012-09-27 09:23:24Z raasch
266	! mask is set to zero for ghost boundaries
267	!
268	! 1010 2012-09-20 07:59:54Z raasch
269	! cpp switch __nopointer added for pointer free version
270	!
271	! 1003 2012-09-14 14:35:53Z raasch
272	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
273	!
274	! 1001 2012-09-13 14:08:46Z raasch
275	! all actions concerning leapfrog scheme removed
276	!
277	! 996 2012-09-07 10:41:47Z raasch
278	! little reformatting
279	!
280	! 978 2012-08-09 08:28:32Z fricke
281	! outflow damping layer removed
282	! roughness length for scalar quantites z0h added
283	! damping zone for the potential temperatur in case of non-cyclic lateral
284	! boundaries added
285	! initialization of ptdf_x, ptdf_y
286	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
287	!
288	! 849 2012-03-15 10:35:09Z raasch
289	! init_particles renamed lpm_init
290	!
291	! 825 2012-02-19 03:03:44Z raasch
292	! wang_collision_kernel renamed wang_kernel
293	!
294	! Revision 1.1 1998/03/09 16:22:22 raasch
295	! Initial revision
296	!
297	!
298	! Description:
299	! ------------
300	!> Allocation of arrays and initialization of the 3D model via
301	!> a) pre-run the 1D model
302	!> or
303	!> b) pre-set constant linear profiles
304	!> or
305	!> c) read values of a previous run
306	!------------------------------------------------------------------------------!
307	SUBROUTINE init_3d_model
308
309
310	USE advec_ws
311
312	USE arrays_3d
313
314	USE constants, &
315	ONLY: pi
316
317	USE control_parameters
318
319	USE flight_mod, &
320	ONLY: flight_init
321
322	USE grid_variables, &
323	ONLY: dx, dy
324
325	USE indices
326
327	USE lpm_init_mod, &
328	ONLY: lpm_init
329
330	USE kinds
331
332	USE land_surface_model_mod, &
333	ONLY: lsm_init, lsm_init_arrays, land_surface
334
335	USE ls_forcing_mod
336
337	USE microphysics_mod, &
338	ONLY: collision_turbulence, microphysics_init
339
340	USE model_1d, &
341	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
342
343	USE netcdf_interface, &
344	ONLY: dots_max, dots_num
345
346	USE particle_attributes, &
347	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
348
349	USE pegrid
350
351	USE plant_canopy_model_mod, &
352	ONLY: pcm_init, plant_canopy
353
354	USE radiation_model_mod, &
355	ONLY: radiation_init, radiation
356
357	USE random_function_mod
358
359	USE random_generator_parallel, &
360	ONLY: random_number_parallel, random_seed_parallel, random_dummy, &
361	id_random_array, seq_random_array
362
363	USE statistics, &
364	ONLY: hom, hom_sum, mean_surface_level_height, pr_palm, rmask, &
365	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
366	sums_l_l, sums_up_fraction_l, sums_wsts_bc_l, ts_value, &
367	weight_pres, weight_substep
368
369	USE surface_layer_fluxes_mod, &
370	ONLY: init_surface_layer_fluxes
371
372	USE transpose_indices
373
374	USE urban_surface_mod, &
375	ONLY: usm_init_urban_surface
376
377	USE wind_turbine_model_mod, &
378	ONLY: wtm_init, wtm_init_arrays, wind_turbine
379
380	IMPLICIT NONE
381
382	INTEGER(iwp) :: i !<
383	INTEGER(iwp) :: ind_array(1) !<
384	INTEGER(iwp) :: j !<
385	INTEGER(iwp) :: k !<
386	INTEGER(iwp) :: sr !<
387
388	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !<
389
390	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !<
391	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !<
392
393	REAL(wp), DIMENSION(1:3) :: volume_flow_area_l !<
394	REAL(wp), DIMENSION(1:3) :: volume_flow_initial_l !<
395
396	REAL(wp), DIMENSION(:), ALLOCATABLE :: mean_surface_level_height_l !<
397	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !<
398	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !<
399
400
401	CALL location_message( 'allocating arrays', .FALSE. )
402	!
403	!-- Allocate arrays
404	ALLOCATE( mean_surface_level_height(0:statistic_regions), &
405	mean_surface_level_height_l(0:statistic_regions), &
406	ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
407	ngp_3d(0:statistic_regions), &
408	ngp_3d_inner(0:statistic_regions), &
409	ngp_3d_inner_l(0:statistic_regions), &
410	ngp_3d_inner_tmp(0:statistic_regions), &
411	sums_divnew_l(0:statistic_regions), &
412	sums_divold_l(0:statistic_regions) )
413	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
414	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
415	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
416	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
417	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
418	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
419	sums(nzb:nzt+1,pr_palm+max_pr_user), &
420	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
421	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
422	sums_up_fraction_l(10,3,0:statistic_regions), &
423	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
424	ts_value(dots_max,0:statistic_regions) )
425	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
426
427	ALLOCATE( ol(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
428	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
429	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
430	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
431	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
432	z0h(nysg:nyng,nxlg:nxrg), z0q(nysg:nyng,nxlg:nxrg) )
433
434	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
435	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
436	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
437	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
438	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
439
440	#if defined( __nopointer )
441	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
442	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
443	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
444	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
445	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
446	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
447	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
448	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
449	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
450	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
451	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
452	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
453	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
454	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
455	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
456	#else
457	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
458	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
459	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
460	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
461	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
462	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
463	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
464	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
465	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
466	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
467	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
468	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
469	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
470	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
471	IF ( .NOT. neutral ) THEN
472	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
473	ENDIF
474	#endif
475
476	!
477	!-- Following array is required for perturbation pressure within the iterative
478	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
479	!-- the weighted average of the substeps and cannot be used in the Poisson
480	!-- solver.
481	IF ( psolver == 'sor' ) THEN
482	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
483	ELSEIF ( psolver(1:9) == 'multigrid' ) THEN
484	!
485	!-- For performance reasons, multigrid is using one ghost layer only
486	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
487	ENDIF
488
489	!
490	!-- Array for storing constant coeffficients of the tridiagonal solver
491	IF ( psolver == 'poisfft' ) THEN
492	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
493	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
494	ENDIF
495
496	IF ( humidity ) THEN
497	!
498	!-- 2D-humidity
499	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
500	qsws(nysg:nyng,nxlg:nxrg), &
501	qswst(nysg:nyng,nxlg:nxrg) )
502
503	!
504	!-- 3D-humidity
505	#if defined( __nopointer )
506	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
507	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
508	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
509	#else
510	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
511	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
512	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
513	#endif
514
515	!
516	!-- 3D-arrays needed for humidity
517	IF ( humidity ) THEN
518	#if defined( __nopointer )
519	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
520	#else
521	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
522	#endif
523
524	IF ( cloud_physics ) THEN
525
526	!
527	!-- Liquid water content
528	#if defined( __nopointer )
529	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
530	#else
531	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
532	#endif
533	!
534	!-- Precipitation amount and rate (only needed if output is switched)
535	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
536	precipitation_rate(nysg:nyng,nxlg:nxrg) )
537
538	!
539	!-- 3D-cloud water content
540	#if defined( __nopointer )
541	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
542	#else
543	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
544	#endif
545	!
546	!-- 3d-precipitation rate
547	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
548
549	IF ( microphysics_seifert ) THEN
550	!
551	!-- 2D-rain water content and rain drop concentration arrays
552	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
553	qrsws(nysg:nyng,nxlg:nxrg), &
554	qrswst(nysg:nyng,nxlg:nxrg), &
555	nrs(nysg:nyng,nxlg:nxrg), &
556	nrsws(nysg:nyng,nxlg:nxrg), &
557	nrswst(nysg:nyng,nxlg:nxrg) )
558	!
559	!-- 3D-rain water content, rain drop concentration arrays
560	#if defined( __nopointer )
561	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
562	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
563	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
564	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
565	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
566	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
567	#else
568	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
569	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
570	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
571	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
572	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
573	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
574	#endif
575	ENDIF
576
577	ENDIF
578
579	IF ( cloud_droplets ) THEN
580	!
581	!-- Liquid water content, change in liquid water content
582	#if defined( __nopointer )
583	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
584	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
585	#else
586	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
587	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
588	#endif
589	!
590	!-- Real volume of particles (with weighting), volume of particles
591	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
592	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
593	ENDIF
594
595	ENDIF
596
597	ENDIF
598
599
600	IF ( passive_scalar ) THEN
601	!
602	!-- 2D-scalar arrays
603	ALLOCATE ( ss(nysg:nyng,nxlg:nxrg), &
604	ssws(nysg:nyng,nxlg:nxrg), &
605	sswst(nysg:nyng,nxlg:nxrg) )
606
607	!
608	!-- 3D scalar arrays
609	#if defined( __nopointer )
610	ALLOCATE( s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
611	s_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
612	ts_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
613	#else
614	ALLOCATE( s_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
615	s_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
616	s_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
617	#endif
618	ENDIF
619
620	IF ( ocean ) THEN
621	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
622	saswst(nysg:nyng,nxlg:nxrg) )
623	#if defined( __nopointer )
624	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
625	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
626	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
627	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
628	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
629	#else
630	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
631	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
632	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
633	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
634	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
635	prho => prho_1
636	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
637	! density to be apointer
638	#endif
639	IF ( humidity_remote ) THEN
640	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
641	qswst_remote = 0.0_wp
642	ENDIF
643	ENDIF
644
645	!
646	!-- 3D-array for storing the dissipation, needed for calculating the sgs
647	!-- particle velocities
648	IF ( use_sgs_for_particles .OR. wang_kernel .OR. collision_turbulence &
649	.OR. num_acc_per_node > 0 ) THEN
650	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
651	ENDIF
652
653	!
654	!-- 1D-array for large scale subsidence velocity
655	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
656	ALLOCATE ( w_subs(nzb:nzt+1) )
657	w_subs = 0.0_wp
658	ENDIF
659
660	!
661	!-- ID-array and state-space-array for the parallel random number generator
662	IF ( random_generator == 'random-parallel' ) THEN
663	ALLOCATE ( seq_random_array(5,nysg:nyng,nxlg:nxrg) )
664	ALLOCATE ( id_random_array(0:ny,0:nx) )
665	seq_random_array = 0
666	id_random_array = 0
667	ENDIF
668
669	!
670	!-- 4D-array for storing the Rif-values at vertical walls
671	IF ( topography /= 'flat' ) THEN
672	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
673	rif_wall = 0.0_wp
674	ENDIF
675
676	!
677	!-- Arrays to store velocity data from t-dt and the phase speeds which
678	!-- are needed for radiation boundary conditions
679	IF ( outflow_l ) THEN
680	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
681	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
682	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
683	ENDIF
684	IF ( outflow_r ) THEN
685	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
686	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
687	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
688	ENDIF
689	IF ( outflow_l .OR. outflow_r ) THEN
690	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
691	c_w(nzb:nzt+1,nysg:nyng) )
692	ENDIF
693	IF ( outflow_s ) THEN
694	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
695	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
696	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
697	ENDIF
698	IF ( outflow_n ) THEN
699	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
700	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
701	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
702	ENDIF
703	IF ( outflow_s .OR. outflow_n ) THEN
704	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
705	c_w(nzb:nzt+1,nxlg:nxrg) )
706	ENDIF
707	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
708	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
709	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
710	ENDIF
711
712
713	#if ! defined( __nopointer )
714	!
715	!-- Initial assignment of the pointers
716	e => e_1; e_p => e_2; te_m => e_3
717	IF ( .NOT. neutral ) THEN
718	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
719	ELSE
720	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
721	ENDIF
722	u => u_1; u_p => u_2; tu_m => u_3
723	v => v_1; v_p => v_2; tv_m => v_3
724	w => w_1; w_p => w_2; tw_m => w_3
725
726	IF ( humidity ) THEN
727	q => q_1; q_p => q_2; tq_m => q_3
728	IF ( humidity ) THEN
729	vpt => vpt_1
730	IF ( cloud_physics ) THEN
731	ql => ql_1
732	qc => qc_1
733	IF ( microphysics_seifert ) THEN
734	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
735	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
736	ENDIF
737	ENDIF
738	ENDIF
739	IF ( cloud_droplets ) THEN
740	ql => ql_1
741	ql_c => ql_2
742	ENDIF
743	ENDIF
744
745	IF ( passive_scalar ) THEN
746	s => s_1; s_p => s_2; ts_m => s_3
747	ENDIF
748
749	IF ( ocean ) THEN
750	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
751	ENDIF
752	#endif
753
754	!
755	!-- Allocate land surface model arrays
756	IF ( land_surface ) THEN
757	CALL lsm_init_arrays
758	ENDIF
759
760	!
761	!-- Allocate wind turbine model arrays
762	IF ( wind_turbine ) THEN
763	CALL wtm_init_arrays
764	ENDIF
765
766	!
767	!-- Initialize virtual flight measurements
768	IF ( virtual_flight ) THEN
769	CALL flight_init
770	ENDIF
771
772	!
773	!-- Allocate arrays containing the RK coefficient for calculation of
774	!-- perturbation pressure and turbulent fluxes. At this point values are
775	!-- set for pressure calculation during initialization (where no timestep
776	!-- is done). Further below the values needed within the timestep scheme
777	!-- will be set.
778	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
779	weight_pres(1:intermediate_timestep_count_max) )
780	weight_substep = 1.0_wp
781	weight_pres = 1.0_wp
782	intermediate_timestep_count = 0 ! needed when simulated_time = 0.0
783
784	CALL location_message( 'finished', .TRUE. )
785
786	!
787	!-- Initialize local summation arrays for routine flow_statistics.
788	!-- This is necessary because they may not yet have been initialized when they
789	!-- are called from flow_statistics (or - depending on the chosen model run -
790	!-- are never initialized)
791	sums_divnew_l = 0.0_wp
792	sums_divold_l = 0.0_wp
793	sums_l_l = 0.0_wp
794	sums_up_fraction_l = 0.0_wp
795	sums_wsts_bc_l = 0.0_wp
796
797
798	!
799	!-- Initialize model variables
800	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
801	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
802	!
803	!-- First model run of a possible job queue.
804	!-- Initial profiles of the variables must be computes.
805	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
806
807	CALL location_message( 'initializing with 1D model profiles', .FALSE. )
808	!
809	!-- Use solutions of the 1D model as initial profiles,
810	!-- start 1D model
811	CALL init_1d_model
812	!
813	!-- Transfer initial profiles to the arrays of the 3D model
814	DO i = nxlg, nxrg
815	DO j = nysg, nyng
816	e(:,j,i) = e1d
817	kh(:,j,i) = kh1d
818	km(:,j,i) = km1d
819	pt(:,j,i) = pt_init
820	u(:,j,i) = u1d
821	v(:,j,i) = v1d
822	ENDDO
823	ENDDO
824
825	IF ( humidity ) THEN
826	DO i = nxlg, nxrg
827	DO j = nysg, nyng
828	q(:,j,i) = q_init
829	ENDDO
830	ENDDO
831	IF ( cloud_physics .AND. microphysics_seifert ) THEN
832	DO i = nxlg, nxrg
833	DO j = nysg, nyng
834	qr(:,j,i) = 0.0_wp
835	nr(:,j,i) = 0.0_wp
836	ENDDO
837	ENDDO
838
839	ENDIF
840	ENDIF
841	IF ( passive_scalar ) THEN
842	DO i = nxlg, nxrg
843	DO j = nysg, nyng
844	s(:,j,i) = s_init
845	ENDDO
846	ENDDO
847	ENDIF
848
849	IF ( .NOT. constant_diffusion ) THEN
850	DO i = nxlg, nxrg
851	DO j = nysg, nyng
852	e(:,j,i) = e1d
853	ENDDO
854	ENDDO
855	!
856	!-- Store initial profiles for output purposes etc.
857	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
858
859	IF ( constant_flux_layer ) THEN
860	ol = ( zu(nzb+1) - zw(nzb) ) / ( rif1d(nzb+1) + 1.0E-20_wp )
861	ts = 0.0_wp ! could actually be computed more accurately in the
862	! 1D model. Update when opportunity arises.
863	us = us1d
864	usws = usws1d
865	vsws = vsws1d
866	ELSE
867	ts = 0.0_wp ! must be set, because used in
868	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
869	us = 0.0_wp
870	usws = 0.0_wp
871	vsws = 0.0_wp
872	ENDIF
873
874	ELSE
875	e = 0.0_wp ! must be set, because used in
876	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
877	ts = 0.0_wp
878	us = 0.0_wp
879	usws = 0.0_wp
880	vsws = 0.0_wp
881	ENDIF
882	uswst = top_momentumflux_u
883	vswst = top_momentumflux_v
884
885	!
886	!-- In every case qs = 0.0 (see also pt)
887	!-- This could actually be computed more accurately in the 1D model.
888	!-- Update when opportunity arises!
889	IF ( humidity ) THEN
890	qs = 0.0_wp
891	IF ( cloud_physics .AND. microphysics_seifert ) THEN
892	qrs = 0.0_wp
893	nrs = 0.0_wp
894	ENDIF
895	ENDIF
896	!
897	!-- Initialize scaling parameter for passive scalar
898	IF ( passive_scalar ) ss = 0.0_wp
899
900	!
901	!-- Inside buildings set velocities back to zero
902	IF ( topography /= 'flat' ) THEN
903	DO i = nxlg, nxrg
904	DO j = nysg, nyng
905	u(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
906	v(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
907	ENDDO
908	ENDDO
909
910	!
911	!-- WARNING: The extra boundary conditions set after running the
912	!-- ------- 1D model impose an error on the divergence one layer
913	!-- below the topography; need to correct later
914	!-- ATTENTION: Provisional correction for Piacsek & Williams
915	!-- --------- advection scheme: keep u and v zero one layer below
916	!-- the topography.
917	IF ( ibc_uv_b == 1 ) THEN
918	!
919	!-- Neumann condition
920	DO i = nxl-1, nxr+1
921	DO j = nys-1, nyn+1
922	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
923	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
924	ENDDO
925	ENDDO
926
927	ENDIF
928
929	ENDIF
930
931	CALL location_message( 'finished', .TRUE. )
932
933	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
934	THEN
935
936	CALL location_message( 'initializing with constant profiles', .FALSE. )
937	!
938	!-- Overwrite initial profiles in case of nudging
939	IF ( nudging ) THEN
940	pt_init = ptnudge(:,1)
941	u_init = unudge(:,1)
942	v_init = vnudge(:,1)
943	IF ( humidity ) THEN ! is passive_scalar correct???
944	q_init = qnudge(:,1)
945	ENDIF
946
947	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
948	'scalars from NUDGING_DATA are used.'
949	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
950	ENDIF
951
952	!
953	!-- Use constructed initial profiles (velocity constant with height,
954	!-- temperature profile with constant gradient)
955	DO i = nxlg, nxrg
956	DO j = nysg, nyng
957	pt(:,j,i) = pt_init
958	u(:,j,i) = u_init
959	v(:,j,i) = v_init
960	ENDDO
961	ENDDO
962
963	!
964	!-- Set initial horizontal velocities at the lowest computational grid
965	!-- levels to zero in order to avoid too small time steps caused by the
966	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
967	!-- in the limiting formula!).
968	IF ( ibc_uv_b /= 1 ) THEN
969	DO i = nxlg, nxrg
970	DO j = nysg, nyng
971	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0_wp
972	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0_wp
973	ENDDO
974	ENDDO
975	ENDIF
976
977	IF ( humidity ) THEN
978	DO i = nxlg, nxrg
979	DO j = nysg, nyng
980	q(:,j,i) = q_init
981	ENDDO
982	ENDDO
983	IF ( cloud_physics .AND. microphysics_seifert ) THEN
984
985	DO i = nxlg, nxrg
986	DO j = nysg, nyng
987	qr(:,j,i) = 0.0_wp
988	nr(:,j,i) = 0.0_wp
989	ENDDO
990	ENDDO
991
992	ENDIF
993	ENDIF
994
995	IF ( passive_scalar ) THEN
996	DO i = nxlg, nxrg
997	DO j = nysg, nyng
998	s(:,j,i) = s_init
999	ENDDO
1000	ENDDO
1001	ENDIF
1002
1003	IF ( ocean ) THEN
1004	DO i = nxlg, nxrg
1005	DO j = nysg, nyng
1006	sa(:,j,i) = sa_init
1007	ENDDO
1008	ENDDO
1009	ENDIF
1010
1011	IF ( constant_diffusion ) THEN
1012	km = km_constant
1013	kh = km / prandtl_number
1014	e = 0.0_wp
1015	ELSEIF ( e_init > 0.0_wp ) THEN
1016	DO k = nzb+1, nzt
1017	km(k,:,:) = 0.1_wp * l_grid(k) * SQRT( e_init )
1018	ENDDO
1019	km(nzb,:,:) = km(nzb+1,:,:)
1020	km(nzt+1,:,:) = km(nzt,:,:)
1021	kh = km / prandtl_number
1022	e = e_init
1023	ELSE
1024	IF ( .NOT. ocean ) THEN
1025	kh = 0.01_wp ! there must exist an initial diffusion, because
1026	km = 0.01_wp ! otherwise no TKE would be produced by the
1027	! production terms, as long as not yet
1028	! e = (u/cm)*2 at k=nzb+1
1029	ELSE
1030	kh = 0.00001_wp
1031	km = 0.00001_wp
1032	ENDIF
1033	e = 0.0_wp
1034	ENDIF
1035	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min
1036	ts = 0.0_wp
1037	!
1038	!-- Very small number is required for calculation of Obukhov length
1039	!-- at first timestep
1040	us = 1E-30_wp
1041	usws = 0.0_wp
1042	uswst = top_momentumflux_u
1043	vsws = 0.0_wp
1044	vswst = top_momentumflux_v
1045	IF ( humidity ) qs = 0.0_wp
1046	IF ( passive_scalar ) ss = 0.0_wp
1047
1048	!
1049	!-- Compute initial temperature field and other constants used in case
1050	!-- of a sloping surface
1051	IF ( sloping_surface ) CALL init_slope
1052
1053	CALL location_message( 'finished', .TRUE. )
1054
1055	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
1056	THEN
1057
1058	CALL location_message( 'initializing by user', .FALSE. )
1059	!
1060	!-- Initialization will completely be done by the user
1061	CALL user_init_3d_model
1062
1063	CALL location_message( 'finished', .TRUE. )
1064
1065	ENDIF
1066
1067	CALL location_message( 'initializing statistics, boundary conditions, etc.', &
1068	.FALSE. )
1069
1070	!
1071	!-- Bottom boundary
1072	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
1073	u(nzb,:,:) = 0.0_wp
1074	v(nzb,:,:) = 0.0_wp
1075	ENDIF
1076
1077	!
1078	!-- Apply channel flow boundary condition
1079	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
1080	u(nzt+1,:,:) = 0.0_wp
1081	v(nzt+1,:,:) = 0.0_wp
1082	ENDIF
1083
1084	!
1085	!-- Calculate virtual potential temperature
1086	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
1087
1088	!
1089	!-- Store initial profiles for output purposes etc.
1090	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
1091	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
1092	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
1093	hom(nzb,1,5,:) = 0.0_wp
1094	hom(nzb,1,6,:) = 0.0_wp
1095	ENDIF
1096	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1097	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
1098	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
1099
1100	IF ( ocean ) THEN
1101	!
1102	!-- Store initial salinity profile
1103	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
1104	ENDIF
1105
1106	IF ( humidity ) THEN
1107	!
1108	!-- Store initial profile of total water content, virtual potential
1109	!-- temperature
1110	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1111	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
1112	IF ( cloud_physics .OR. cloud_droplets ) THEN
1113	!
1114	!-- Store initial profile of specific humidity and potential
1115	!-- temperature
1116	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1117	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1118	ENDIF
1119	ENDIF
1120
1121	IF ( passive_scalar ) THEN
1122	!
1123	!-- Store initial scalar profile
1124	hom(:,1,115,:) = SPREAD( s(:,nys,nxl), 2, statistic_regions+1 )
1125	ENDIF
1126
1127	!
1128	!-- Initialize the random number generators (from numerical recipes)
1129	CALL random_function_ini
1130
1131	IF ( random_generator == 'random-parallel' ) THEN
1132	!-- Asigning an ID to every vertical gridpoint column
1133	!-- dependig on the ensemble run number.
1134	random_dummy=1
1135	DO j=0,ny
1136	DO i=0,nx
1137	id_random_array(j,i) = random_dummy + 1E6 &
1138	* ( ensemble_member_nr - 1000 )
1139	random_dummy = random_dummy + 1
1140	END DO
1141	ENDDO
1142	!-- Initializing with random_seed_parallel for every vertical
1143	!-- gridpoint column.
1144	random_dummy=0
1145	DO j = nysg, nyng
1146	DO i = nxlg, nxrg
1147	CALL random_seed_parallel (random_sequence=id_random_array(j, i))
1148	CALL random_number_parallel (random_dummy)
1149	CALL random_seed_parallel (get=seq_random_array(:, j, i))
1150	END DO
1151	ENDDO
1152	ENDIF
1153
1154	!
1155	!-- Initialize fluxes at bottom surface
1156	IF ( use_surface_fluxes ) THEN
1157
1158	IF ( constant_heatflux ) THEN
1159	!
1160	!-- Heat flux is prescribed
1161	IF ( random_heatflux ) THEN
1162	CALL disturb_heatflux
1163	ELSE
1164	shf = surface_heatflux
1165	!
1166	!-- Initialize shf with data from external file LSF_DATA
1167	IF ( large_scale_forcing .AND. lsf_surf ) THEN
1168	CALL ls_forcing_surf ( simulated_time )
1169	ENDIF
1170
1171	!
1172	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
1173	IF ( TRIM( topography ) /= 'flat' ) THEN
1174	DO i = nxlg, nxrg
1175	DO j = nysg, nyng
1176	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1177	shf(j,i) = wall_heatflux(0)
1178	ENDIF
1179	ENDDO
1180	ENDDO
1181	ENDIF
1182	ENDIF
1183	ENDIF
1184
1185	!
1186	!-- Determine the near-surface water flux
1187	IF ( humidity ) THEN
1188	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1189	qrsws = 0.0_wp
1190	nrsws = 0.0_wp
1191	ENDIF
1192	IF ( constant_waterflux ) THEN
1193	qsws = surface_waterflux
1194	!
1195	!-- Over topography surface_waterflux is replaced by
1196	!-- wall_humidityflux(0)
1197	IF ( TRIM( topography ) /= 'flat' ) THEN
1198	wall_qflux = wall_humidityflux
1199	DO i = nxlg, nxrg
1200	DO j = nysg, nyng
1201	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1202	qsws(j,i) = wall_qflux(0)
1203	ENDIF
1204	ENDDO
1205	ENDDO
1206	ENDIF
1207	ENDIF
1208	ENDIF
1209	!
1210	!-- Initialize the near-surface scalar flux
1211	IF ( passive_scalar ) THEN
1212	IF ( constant_scalarflux ) THEN
1213	ssws = surface_scalarflux
1214	!
1215	!-- Over topography surface_scalarflux is replaced by
1216	!-- wall_scalarflux(0)
1217	IF ( TRIM( topography ) /= 'flat' ) THEN
1218	wall_sflux = wall_scalarflux
1219	DO i = nxlg, nxrg
1220	DO j = nysg, nyng
1221	IF ( nzb_s_inner(j,i) /= 0 ) ssws(j,i) = wall_sflux(0)
1222	ENDDO
1223	ENDDO
1224	ENDIF
1225	ENDIF
1226	ENDIF
1227	!
1228	!-- Initialize near-surface salinity flux
1229	IF ( ocean ) saswsb = bottom_salinityflux
1230
1231	ENDIF
1232
1233	!
1234	!-- Initialize fluxes at top surface
1235	!-- Currently, only the heatflux and salinity flux can be prescribed.
1236	!-- The latent flux is zero in this case!
1237	IF ( use_top_fluxes ) THEN
1238	!
1239	!-- Prescribe to heat flux
1240	IF ( constant_top_heatflux ) tswst = top_heatflux
1241	!
1242	!-- Prescribe zero latent flux at the top
1243	IF ( humidity ) THEN
1244	qswst = 0.0_wp
1245	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1246	nrswst = 0.0_wp
1247	qrswst = 0.0_wp
1248	ENDIF
1249	ENDIF
1250	!
1251	!-- Prescribe top scalar flux
1252	IF ( passive_scalar .AND. constant_top_scalarflux ) &
1253	sswst = top_scalarflux
1254	!
1255	!-- Prescribe top salinity flux
1256	IF ( ocean .AND. constant_top_salinityflux) &
1257	saswst = top_salinityflux
1258	!
1259	!-- Initialization in case of a coupled model run
1260	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1261	tswst = 0.0_wp
1262	ENDIF
1263
1264	ENDIF
1265
1266	!
1267	!-- Initialize Prandtl layer quantities
1268	IF ( constant_flux_layer ) THEN
1269
1270	z0 = roughness_length
1271	z0h = z0h_factor * z0
1272	z0q = z0h_factor * z0
1273
1274	IF ( .NOT. constant_heatflux ) THEN
1275	!
1276	!-- Surface temperature is prescribed. Here the heat flux cannot be
1277	!-- simply estimated, because therefore ol, u* and theta* would have
1278	!-- to be computed by iteration. This is why the heat flux is assumed
1279	!-- to be zero before the first time step. It approaches its correct
1280	!-- value in the course of the first few time steps.
1281	shf = 0.0_wp
1282	ENDIF
1283
1284	IF ( humidity ) THEN
1285	IF ( .NOT. constant_waterflux ) qsws = 0.0_wp
1286	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1287	qrsws = 0.0_wp
1288	nrsws = 0.0_wp
1289	ENDIF
1290	ENDIF
1291	IF ( passive_scalar .AND. .NOT. constant_scalarflux ) ssws = 0.0_wp
1292
1293	ENDIF
1294
1295	!
1296	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1297	!-- the reference state will be set (overwritten) in init_ocean)
1298	IF ( use_single_reference_value ) THEN
1299	IF ( .NOT. humidity ) THEN
1300	ref_state(:) = pt_reference
1301	ELSE
1302	ref_state(:) = vpt_reference
1303	ENDIF
1304	ELSE
1305	IF ( .NOT. humidity ) THEN
1306	ref_state(:) = pt_init(:)
1307	ELSE
1308	ref_state(:) = vpt(:,nys,nxl)
1309	ENDIF
1310	ENDIF
1311
1312	!
1313	!-- For the moment, vertical velocity is zero
1314	w = 0.0_wp
1315
1316	!
1317	!-- Initialize array sums (must be defined in first call of pres)
1318	sums = 0.0_wp
1319
1320	!
1321	!-- In case of iterative solvers, p must get an initial value
1322	IF ( psolver(1:9) == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
1323
1324	!
1325	!-- Treating cloud physics, liquid water content and precipitation amount
1326	!-- are zero at beginning of the simulation
1327	IF ( cloud_physics ) THEN
1328	ql = 0.0_wp
1329	qc = 0.0_wp
1330
1331	precipitation_amount = 0.0_wp
1332	ENDIF
1333	!
1334	!-- Impose vortex with vertical axis on the initial velocity profile
1335	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1336	CALL init_rankine
1337	ENDIF
1338
1339	!
1340	!-- Impose temperature anomaly (advection test only)
1341	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1342	CALL init_pt_anomaly
1343	ENDIF
1344
1345	!
1346	!-- If required, change the surface temperature at the start of the 3D run
1347	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
1348	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1349	ENDIF
1350
1351	!
1352	!-- If required, change the surface humidity/scalar at the start of the 3D
1353	!-- run
1354	IF ( humidity .AND. q_surface_initial_change /= 0.0_wp ) &
1355	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1356
1357	IF ( passive_scalar .AND. s_surface_initial_change /= 0.0_wp ) &
1358	s(nzb,:,:) = s(nzb,:,:) + s_surface_initial_change
1359
1360
1361	!
1362	!-- Initialize old and new time levels.
1363	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
1364	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1365
1366	IF ( humidity ) THEN
1367	tq_m = 0.0_wp
1368	q_p = q
1369	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1370	tqr_m = 0.0_wp
1371	qr_p = qr
1372	tnr_m = 0.0_wp
1373	nr_p = nr
1374	ENDIF
1375	ENDIF
1376
1377	IF ( passive_scalar ) THEN
1378	ts_m = 0.0_wp
1379	s_p = s
1380	ENDIF
1381
1382	IF ( ocean ) THEN
1383	tsa_m = 0.0_wp
1384	sa_p = sa
1385	ENDIF
1386
1387	CALL location_message( 'finished', .TRUE. )
1388
1389	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1390	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1391	THEN
1392
1393	CALL location_message( 'initializing in case of restart / cyclic_fill', &
1394	.FALSE. )
1395	!
1396	!-- When reading data for cyclic fill of 3D prerun data files, read
1397	!-- some of the global variables from the restart file which are required
1398	!-- for initializing the inflow
1399	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1400
1401	DO i = 0, io_blocks-1
1402	IF ( i == io_group ) THEN
1403	CALL read_parts_of_var_list
1404	CALL close_file( 13 )
1405	ENDIF
1406	#if defined( __parallel )
1407	CALL MPI_BARRIER( comm2d, ierr )
1408	#endif
1409	ENDDO
1410
1411	ENDIF
1412
1413	!
1414	!-- Read binary data from restart file
1415	DO i = 0, io_blocks-1
1416	IF ( i == io_group ) THEN
1417	CALL read_3d_binary
1418	ENDIF
1419	#if defined( __parallel )
1420	CALL MPI_BARRIER( comm2d, ierr )
1421	#endif
1422	ENDDO
1423
1424	!
1425	!-- Initialization of the turbulence recycling method
1426	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1427	turbulent_inflow ) THEN
1428	!
1429	!-- First store the profiles to be used at the inflow.
1430	!-- These profiles are the (temporally) and horizontally averaged vertical
1431	!-- profiles from the prerun. Alternatively, prescribed profiles
1432	!-- for u,v-components can be used.
1433	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,7) )
1434
1435	IF ( use_prescribed_profile_data ) THEN
1436	mean_inflow_profiles(:,1) = u_init ! u
1437	mean_inflow_profiles(:,2) = v_init ! v
1438	ELSE
1439	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1440	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1441	ENDIF
1442	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1443	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1444	IF ( humidity ) &
1445	mean_inflow_profiles(:,6) = hom_sum(:,41,0) ! q
1446	IF ( passive_scalar ) &
1447	mean_inflow_profiles(:,7) = hom_sum(:,115,0) ! s
1448
1449	!
1450	!-- If necessary, adjust the horizontal flow field to the prescribed
1451	!-- profiles
1452	IF ( use_prescribed_profile_data ) THEN
1453	DO i = nxlg, nxrg
1454	DO j = nysg, nyng
1455	DO k = nzb, nzt+1
1456	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1457	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1458	ENDDO
1459	ENDDO
1460	ENDDO
1461	ENDIF
1462
1463	!
1464	!-- Use these mean profiles at the inflow (provided that Dirichlet
1465	!-- conditions are used)
1466	IF ( inflow_l ) THEN
1467	DO j = nysg, nyng
1468	DO k = nzb, nzt+1
1469	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1470	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1471	w(k,j,nxlg:-1) = 0.0_wp
1472	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1473	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1474	IF ( humidity ) &
1475	q(k,j,nxlg:-1) = mean_inflow_profiles(k,6)
1476	IF ( passive_scalar ) &
1477	s(k,j,nxlg:-1) = mean_inflow_profiles(k,7)
1478	ENDDO
1479	ENDDO
1480	ENDIF
1481
1482	!
1483	!-- Calculate the damping factors to be used at the inflow. For a
1484	!-- turbulent inflow the turbulent fluctuations have to be limited
1485	!-- vertically because otherwise the turbulent inflow layer will grow
1486	!-- in time.
1487	IF ( inflow_damping_height == 9999999.9_wp ) THEN
1488	!
1489	!-- Default: use the inversion height calculated by the prerun; if
1490	!-- this is zero, inflow_damping_height must be explicitly
1491	!-- specified.
1492	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
1493	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1494	ELSE
1495	WRITE( message_string, * ) 'inflow_damping_height must be ', &
1496	'explicitly specified because&the inversion height ', &
1497	'calculated by the prerun is zero.'
1498	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1499	ENDIF
1500
1501	ENDIF
1502
1503	IF ( inflow_damping_width == 9999999.9_wp ) THEN
1504	!
1505	!-- Default for the transition range: one tenth of the undamped
1506	!-- layer
1507	inflow_damping_width = 0.1_wp * inflow_damping_height
1508
1509	ENDIF
1510
1511	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1512
1513	DO k = nzb, nzt+1
1514
1515	IF ( zu(k) <= inflow_damping_height ) THEN
1516	inflow_damping_factor(k) = 1.0_wp
1517	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1518	inflow_damping_factor(k) = 1.0_wp - &
1519	( zu(k) - inflow_damping_height ) / &
1520	inflow_damping_width
1521	ELSE
1522	inflow_damping_factor(k) = 0.0_wp
1523	ENDIF
1524
1525	ENDDO
1526
1527	ENDIF
1528
1529	!
1530	!-- Inside buildings set velocities and TKE back to zero
1531	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1532	topography /= 'flat' ) THEN
1533	!
1534	!-- Inside buildings set velocities and TKE back to zero.
1535	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1536	!-- maybe revise later.
1537	DO i = nxlg, nxrg
1538	DO j = nysg, nyng
1539	u (nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1540	v (nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1541	w (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1542	e (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1543	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1544	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1545	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1546	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1547	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1548	ENDDO
1549	ENDDO
1550
1551	ENDIF
1552
1553	!
1554	!-- Calculate initial temperature field and other constants used in case
1555	!-- of a sloping surface
1556	IF ( sloping_surface ) CALL init_slope
1557
1558	!
1559	!-- Initialize new time levels (only done in order to set boundary values
1560	!-- including ghost points)
1561	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1562	IF ( humidity ) THEN
1563	q_p = q
1564	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1565	qr_p = qr
1566	nr_p = nr
1567	ENDIF
1568	ENDIF
1569	IF ( passive_scalar ) s_p = s
1570	IF ( ocean ) sa_p = sa
1571
1572	!
1573	!-- Allthough tendency arrays are set in prognostic_equations, they have
1574	!-- have to be predefined here because they are used (but multiplied with 0)
1575	!-- there before they are set.
1576	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
1577	IF ( humidity ) THEN
1578	tq_m = 0.0_wp
1579	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1580	tqr_m = 0.0_wp
1581	tnr_m = 0.0_wp
1582	ENDIF
1583	ENDIF
1584	IF ( passive_scalar ) ts_m = 0.0_wp
1585	IF ( ocean ) tsa_m = 0.0_wp
1586
1587	CALL location_message( 'finished', .TRUE. )
1588
1589	ELSE
1590	!
1591	!-- Actually this part of the programm should not be reached
1592	message_string = 'unknown initializing problem'
1593	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1594	ENDIF
1595
1596
1597	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1598	!
1599	!-- Initialize old timelevels needed for radiation boundary conditions
1600	IF ( outflow_l ) THEN
1601	u_m_l(:,:,:) = u(:,:,1:2)
1602	v_m_l(:,:,:) = v(:,:,0:1)
1603	w_m_l(:,:,:) = w(:,:,0:1)
1604	ENDIF
1605	IF ( outflow_r ) THEN
1606	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1607	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1608	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1609	ENDIF
1610	IF ( outflow_s ) THEN
1611	u_m_s(:,:,:) = u(:,0:1,:)
1612	v_m_s(:,:,:) = v(:,1:2,:)
1613	w_m_s(:,:,:) = w(:,0:1,:)
1614	ENDIF
1615	IF ( outflow_n ) THEN
1616	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1617	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1618	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1619	ENDIF
1620
1621	ENDIF
1622
1623	!
1624	!-- Calculate the initial volume flow at the right and north boundary
1625	IF ( conserve_volume_flow ) THEN
1626
1627	IF ( use_prescribed_profile_data ) THEN
1628
1629	volume_flow_initial_l = 0.0_wp
1630	volume_flow_area_l = 0.0_wp
1631
1632	IF ( nxr == nx ) THEN
1633	DO j = nys, nyn
1634	DO k = nzb_u_inner(j,nx)+1, nzt
1635	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1636	u_init(k) * dzw(k)
1637	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1638	ENDDO
1639	ENDDO
1640	ENDIF
1641
1642	IF ( nyn == ny ) THEN
1643	DO i = nxl, nxr
1644	DO k = nzb_v_inner(ny,i)+1, nzt
1645	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1646	v_init(k) * dzw(k)
1647	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1648	ENDDO
1649	ENDDO
1650	ENDIF
1651
1652	#if defined( __parallel )
1653	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1654	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1655	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1656	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1657
1658	#else
1659	volume_flow_initial = volume_flow_initial_l
1660	volume_flow_area = volume_flow_area_l
1661	#endif
1662
1663	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1664
1665	volume_flow_initial_l = 0.0_wp
1666	volume_flow_area_l = 0.0_wp
1667
1668	IF ( nxr == nx ) THEN
1669	DO j = nys, nyn
1670	DO k = nzb_u_inner(j,nx)+1, nzt
1671	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1672	hom_sum(k,1,0) * dzw(k)
1673	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1674	ENDDO
1675	ENDDO
1676	ENDIF
1677
1678	IF ( nyn == ny ) THEN
1679	DO i = nxl, nxr
1680	DO k = nzb_v_inner(ny,i)+1, nzt
1681	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1682	hom_sum(k,2,0) * dzw(k)
1683	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1684	ENDDO
1685	ENDDO
1686	ENDIF
1687
1688	#if defined( __parallel )
1689	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1690	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1691	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1692	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1693
1694	#else
1695	volume_flow_initial = volume_flow_initial_l
1696	volume_flow_area = volume_flow_area_l
1697	#endif
1698
1699	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1700
1701	volume_flow_initial_l = 0.0_wp
1702	volume_flow_area_l = 0.0_wp
1703
1704	IF ( nxr == nx ) THEN
1705	DO j = nys, nyn
1706	DO k = nzb_u_inner(j,nx)+1, nzt
1707	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1708	u(k,j,nx) * dzw(k)
1709	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1710	ENDDO
1711	ENDDO
1712	ENDIF
1713
1714	IF ( nyn == ny ) THEN
1715	DO i = nxl, nxr
1716	DO k = nzb_v_inner(ny,i)+1, nzt
1717	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1718	v(k,ny,i) * dzw(k)
1719	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1720	ENDDO
1721	ENDDO
1722	ENDIF
1723
1724	#if defined( __parallel )
1725	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1726	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1727	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1728	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1729
1730	#else
1731	volume_flow_initial = volume_flow_initial_l
1732	volume_flow_area = volume_flow_area_l
1733	#endif
1734
1735	ENDIF
1736
1737	!
1738	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1739	!-- from u\|v_bulk instead
1740	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1741	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1742	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1743	ENDIF
1744
1745	ENDIF
1746
1747	!
1748	!-- Initialize quantities for special advections schemes
1749	CALL init_advec
1750
1751	!
1752	!-- Impose random perturbation on the horizontal velocity field and then
1753	!-- remove the divergences from the velocity field at the initial stage
1754	IF ( create_disturbances .AND. disturbance_energy_limit /= 0.0_wp .AND. &
1755	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1756	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1757
1758	CALL location_message( 'creating initial disturbances', .FALSE. )
1759	CALL disturb_field( nzb_u_inner, tend, u )
1760	CALL disturb_field( nzb_v_inner, tend, v )
1761	CALL location_message( 'finished', .TRUE. )
1762
1763	CALL location_message( 'calling pressure solver', .FALSE. )
1764	n_sor = nsor_ini
1765	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1766	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1767	!$acc copyin( weight_pres, weight_substep ) &
1768	!$acc copy( tri, tric, u, v, w )
1769	CALL pres
1770	!$acc end data
1771	n_sor = nsor
1772	CALL location_message( 'finished', .TRUE. )
1773
1774	ENDIF
1775
1776	!
1777	!-- If required, initialize quantities needed for the plant canopy model
1778	IF ( plant_canopy ) THEN
1779	CALL location_message( 'initializing plant canopy model', .FALSE. )
1780	CALL pcm_init
1781	CALL location_message( 'finished', .TRUE. )
1782	ENDIF
1783
1784	!
1785	!-- If required, initialize dvrp-software
1786	IF ( dt_dvrp /= 9999999.9_wp ) CALL init_dvrp
1787
1788	IF ( ocean ) THEN
1789	!
1790	!-- Initialize quantities needed for the ocean model
1791	CALL init_ocean
1792
1793	ELSE
1794	!
1795	!-- Initialize quantities for handling cloud physics
1796	!-- This routine must be called before lpm_init, because
1797	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1798	!-- lpm_init) is not defined.
1799	CALL init_cloud_physics
1800	!
1801	!-- Initialize bulk cloud microphysics
1802	CALL microphysics_init
1803	ENDIF
1804
1805	!
1806	!-- If required, initialize particles
1807	IF ( particle_advection ) CALL lpm_init
1808
1809	!
1810	!-- If required, initialize quantities needed for the LSM
1811	IF ( land_surface ) THEN
1812	CALL location_message( 'initializing land surface model', .FALSE. )
1813	CALL lsm_init
1814	CALL location_message( 'finished', .TRUE. )
1815	ENDIF
1816
1817	!
1818	!-- Initialize surface layer (done after LSM as roughness length are required
1819	!-- for initialization
1820	IF ( constant_flux_layer ) THEN
1821	CALL location_message( 'initializing surface layer', .FALSE. )
1822	CALL init_surface_layer_fluxes
1823	CALL location_message( 'finished', .TRUE. )
1824	ENDIF
1825
1826	!
1827	!-- If required, initialize radiation model
1828	IF ( radiation ) THEN
1829	CALL location_message( 'initializing radiation model', .FALSE. )
1830	CALL radiation_init
1831	CALL location_message( 'finished', .TRUE. )
1832	ENDIF
1833
1834	!
1835	!-- If required, initialize urban surface model
1836	IF ( urban_surface ) THEN
1837	CALL location_message( 'initializing urban surface model', .FALSE. )
1838	CALL usm_init_urban_surface
1839	CALL location_message( 'finished', .TRUE. )
1840	ENDIF
1841
1842	!
1843	!-- If required, initialize quantities needed for the wind turbine model
1844	IF ( wind_turbine ) THEN
1845	CALL location_message( 'initializing wind turbine model', .FALSE. )
1846	CALL wtm_init
1847	CALL location_message( 'finished', .TRUE. )
1848	ENDIF
1849
1850
1851	!
1852	!-- Initialize the ws-scheme.
1853	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1854
1855	!
1856	!-- Setting weighting factors for calculation of perturbation pressure
1857	!-- and turbulent quantities from the RK substeps
1858	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1859
1860	weight_substep(1) = 1._wp/6._wp
1861	weight_substep(2) = 3._wp/10._wp
1862	weight_substep(3) = 8._wp/15._wp
1863
1864	weight_pres(1) = 1._wp/3._wp
1865	weight_pres(2) = 5._wp/12._wp
1866	weight_pres(3) = 1._wp/4._wp
1867
1868	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1869
1870	weight_substep(1) = 1._wp/2._wp
1871	weight_substep(2) = 1._wp/2._wp
1872
1873	weight_pres(1) = 1._wp/2._wp
1874	weight_pres(2) = 1._wp/2._wp
1875
1876	ELSE ! for Euler-method
1877
1878	weight_substep(1) = 1.0_wp
1879	weight_pres(1) = 1.0_wp
1880
1881	ENDIF
1882
1883	!
1884	!-- Initialize Rayleigh damping factors
1885	rdf = 0.0_wp
1886	rdf_sc = 0.0_wp
1887	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
1888	IF ( .NOT. ocean ) THEN
1889	DO k = nzb+1, nzt
1890	IF ( zu(k) >= rayleigh_damping_height ) THEN
1891	rdf(k) = rayleigh_damping_factor * &
1892	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
1893	/ ( zu(nzt) - rayleigh_damping_height ) ) &
1894	)**2
1895	ENDIF
1896	ENDDO
1897	ELSE
1898	DO k = nzt, nzb+1, -1
1899	IF ( zu(k) <= rayleigh_damping_height ) THEN
1900	rdf(k) = rayleigh_damping_factor * &
1901	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
1902	/ ( rayleigh_damping_height - zu(nzb+1) ) ) &
1903	)**2
1904	ENDIF
1905	ENDDO
1906	ENDIF
1907	ENDIF
1908	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1909
1910	!
1911	!-- Initialize the starting level and the vertical smoothing factor used for
1912	!-- the external pressure gradient
1913	dp_smooth_factor = 1.0_wp
1914	IF ( dp_external ) THEN
1915	!
1916	!-- Set the starting level dp_level_ind_b only if it has not been set before
1917	!-- (e.g. in init_grid).
1918	IF ( dp_level_ind_b == 0 ) THEN
1919	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1920	dp_level_ind_b = ind_array(1) - 1 + nzb
1921	! MINLOC uses lower array bound 1
1922	ENDIF
1923	IF ( dp_smooth ) THEN
1924	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
1925	DO k = dp_level_ind_b+1, nzt
1926	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
1927	( REAL( k - dp_level_ind_b, KIND=wp ) / &
1928	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
1929	ENDDO
1930	ENDIF
1931	ENDIF
1932
1933	!
1934	!-- Initialize damping zone for the potential temperature in case of
1935	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1936	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1937	ptdf_x = 0.0_wp
1938	ptdf_y = 0.0_wp
1939	IF ( bc_lr_dirrad ) THEN
1940	DO i = nxl, nxr
1941	IF ( ( i * dx ) < pt_damping_width ) THEN
1942	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
1943	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
1944	REAL( pt_damping_width, KIND=wp ) ) ) )**2
1945	ENDIF
1946	ENDDO
1947	ELSEIF ( bc_lr_raddir ) THEN
1948	DO i = nxl, nxr
1949	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1950	ptdf_x(i) = pt_damping_factor * &
1951	SIN( pi * 0.5_wp * &
1952	( ( i - nx ) * dx + pt_damping_width ) / &
1953	REAL( pt_damping_width, KIND=wp ) )**2
1954	ENDIF
1955	ENDDO
1956	ELSEIF ( bc_ns_dirrad ) THEN
1957	DO j = nys, nyn
1958	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1959	ptdf_y(j) = pt_damping_factor * &
1960	SIN( pi * 0.5_wp * &
1961	( ( j - ny ) * dy + pt_damping_width ) / &
1962	REAL( pt_damping_width, KIND=wp ) )**2
1963	ENDIF
1964	ENDDO
1965	ELSEIF ( bc_ns_raddir ) THEN
1966	DO j = nys, nyn
1967	IF ( ( j * dy ) < pt_damping_width ) THEN
1968	ptdf_y(j) = pt_damping_factor * &
1969	SIN( pi * 0.5_wp * &
1970	( pt_damping_width - j * dy ) / &
1971	REAL( pt_damping_width, KIND=wp ) )**2
1972	ENDIF
1973	ENDDO
1974	ENDIF
1975
1976	!
1977	!-- Pre-set masks for regional statistics. Default is the total model domain.
1978	!-- Ghost points are excluded because counting values at the ghost boundaries
1979	!-- would bias the statistics
1980	rmask = 1.0_wp
1981	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
1982	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
1983
1984	!
1985	!-- User-defined initializing actions. Check afterwards, if maximum number
1986	!-- of allowed timeseries is exceeded
1987	CALL user_init
1988
1989	IF ( dots_num > dots_max ) THEN
1990	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1991	' its maximum of dots_max = ', dots_max, &
1992	' &Please increase dots_max in modules.f90.'
1993	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1994	ENDIF
1995
1996	!
1997	!-- Input binary data file is not needed anymore. This line must be placed
1998	!-- after call of user_init!
1999	CALL close_file( 13 )
2000
2001	!
2002	!-- Compute total sum of active mask grid points
2003	!-- and the mean surface level height for each statistic region
2004	!-- ngp_2dh: number of grid points of a horizontal cross section through the
2005	!-- total domain
2006	!-- ngp_3d: number of grid points of the total domain
2007	ngp_2dh_outer_l = 0
2008	ngp_2dh_outer = 0
2009	ngp_2dh_s_inner_l = 0
2010	ngp_2dh_s_inner = 0
2011	ngp_2dh_l = 0
2012	ngp_2dh = 0
2013	ngp_3d_inner_l = 0.0_wp
2014	ngp_3d_inner = 0
2015	ngp_3d = 0
2016	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
2017
2018	mean_surface_level_height = 0.0_wp
2019	mean_surface_level_height_l = 0.0_wp
2020
2021	DO sr = 0, statistic_regions
2022	DO i = nxl, nxr
2023	DO j = nys, nyn
2024	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
2025	!
2026	!-- All xy-grid points
2027	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
2028	mean_surface_level_height_l(sr) = mean_surface_level_height_l(sr) &
2029	+ zw(nzb_s_inner(j,i))
2030	!
2031	!-- xy-grid points above topography
2032	DO k = nzb_s_outer(j,i), nz + 1
2033	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
2034	ENDDO
2035	DO k = nzb_s_inner(j,i), nz + 1
2036	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
2037	ENDDO
2038	!
2039	!-- All grid points of the total domain above topography
2040	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) &
2041	+ ( nz - nzb_s_inner(j,i) + 2 )
2042	ENDIF
2043	ENDDO
2044	ENDDO
2045	ENDDO
2046
2047	sr = statistic_regions + 1
2048	#if defined( __parallel )
2049	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2050	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
2051	comm2d, ierr )
2052	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2053	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
2054	MPI_INTEGER, MPI_SUM, comm2d, ierr )
2055	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2056	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
2057	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
2058	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2059	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
2060	MPI_SUM, comm2d, ierr )
2061	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
2062	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
2063	CALL MPI_ALLREDUCE( mean_surface_level_height_l(0), &
2064	mean_surface_level_height(0), sr, MPI_REAL, &
2065	MPI_SUM, comm2d, ierr )
2066	mean_surface_level_height = mean_surface_level_height / REAL( ngp_2dh )
2067	#else
2068	ngp_2dh = ngp_2dh_l
2069	ngp_2dh_outer = ngp_2dh_outer_l
2070	ngp_2dh_s_inner = ngp_2dh_s_inner_l
2071	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
2072	mean_surface_level_height = mean_surface_level_height_l / REAL( ngp_2dh_l )
2073	#endif
2074
2075	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
2076	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
2077
2078	!
2079	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
2080	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
2081	!-- the respective subdomain lie below the surface topography
2082	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
2083	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
2084	ngp_3d_inner(:) )
2085	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
2086
2087	DEALLOCATE( mean_surface_level_height_l, ngp_2dh_l, ngp_2dh_outer_l, &
2088	ngp_3d_inner_l, ngp_3d_inner_tmp )
2089
2090	CALL location_message( 'leaving init_3d_model', .TRUE. )
2091
2092	END SUBROUTINE init_3d_model

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