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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1832

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

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