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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1777

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

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