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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1734

Last change on this file since 1734 was 1734, checked in by raasch, 9 years ago
no initial disturbances in case that the disturbance energy limit has been set zero
Property svn:keywords set to `Id`
File size: 66.3 KB

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

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