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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1960

Last change on this file since 1960 was 1960, checked in by suehring, 8 years ago

Separate balance equations for humidity and passive_scalar

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

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