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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1876

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

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