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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1576

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

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