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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1966

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

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