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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1918

Last change on this file since 1918 was 1918, checked in by raasch, 8 years ago

bugfixes for calculating run control quantities, bugfix for calculating pressure with fft-method in case of Neumann conditions both at bottom and top, steering of pres modified, ocean mode now uses initial density profile as reference in the buoyancy term

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

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

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