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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1818

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

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