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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1407

Last change on this file since 1407 was 1407, checked in by raasch, 11 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 1407 2014-05-16 14:06:08Z raasch $
27	!
28	! 1406 2014-05-16 13:47:01Z raasch
29	! bugfix: setting of initial velocities at k=1 to zero not in case of a
30	! no-slip boundary condition for uv
31	!
32	! 1402 2014-05-09 14:25:13Z raasch
33	! location messages modified
34	!
35	! 1400 2014-05-09 14:03:54Z knoop
36	! Parallel random number generator added
37	!
38	! 1384 2014-05-02 14:31:06Z raasch
39	! location messages added
40	!
41	! 1361 2014-04-16 15:17:48Z hoffmann
42	! tend_* removed
43	! Bugfix: w_subs is not allocated anymore if it is already allocated
44	!
45	! 1359 2014-04-11 17:15:14Z hoffmann
46	! module lpm_init_mod added to use statements, because lpm_init has become a
47	! module
48	!
49	! 1353 2014-04-08 15:21:23Z heinze
50	! REAL constants provided with KIND-attribute
51	!
52	! 1340 2014-03-25 19:45:13Z kanani
53	! REAL constants defined as wp-kind
54	!
55	! 1322 2014-03-20 16:38:49Z raasch
56	! REAL constants defined as wp-kind
57	! module interfaces removed
58	!
59	! 1320 2014-03-20 08:40:49Z raasch
60	! ONLY-attribute added to USE-statements,
61	! kind-parameters added to all INTEGER and REAL declaration statements,
62	! kinds are defined in new module kinds,
63	! revision history before 2012 removed,
64	! comment fields (!:) to be used for variable explanations added to
65	! all variable declaration statements
66	!
67	! 1316 2014-03-17 07:44:59Z heinze
68	! Bugfix: allocation of w_subs
69	!
70	! 1299 2014-03-06 13:15:21Z heinze
71	! Allocate w_subs due to extension of large scale subsidence in combination
72	! with large scale forcing data (LSF_DATA)
73	!
74	! 1241 2013-10-30 11:36:58Z heinze
75	! Overwrite initial profiles in case of nudging
76	! Inititialize shf and qsws in case of large_scale_forcing
77	!
78	! 1221 2013-09-10 08:59:13Z raasch
79	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
80	! copy
81	!
82	! 1212 2013-08-15 08:46:27Z raasch
83	! array tri is allocated and included in data copy statement
84	!
85	! 1195 2013-07-01 12:27:57Z heinze
86	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
87	!
88	! 1179 2013-06-14 05:57:58Z raasch
89	! allocate and set ref_state to be used in buoyancy terms
90	!
91	! 1171 2013-05-30 11:27:45Z raasch
92	! diss array is allocated with full size if accelerator boards are used
93	!
94	! 1159 2013-05-21 11:58:22Z fricke
95	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
96	!
97	! 1153 2013-05-10 14:33:08Z raasch
98	! diss array is allocated with dummy elements even if it is not needed
99	! (required by PGI 13.4 / CUDA 5.0)
100	!
101	! 1115 2013-03-26 18:16:16Z hoffmann
102	! unused variables removed
103	!
104	! 1113 2013-03-10 02:48:14Z raasch
105	! openACC directive modified
106	!
107	! 1111 2013-03-08 23:54:10Z raasch
108	! openACC directives added for pres
109	! array diss allocated only if required
110	!
111	! 1092 2013-02-02 11:24:22Z raasch
112	! unused variables removed
113	!
114	! 1065 2012-11-22 17:42:36Z hoffmann
115	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
116	!
117	! 1053 2012-11-13 17:11:03Z hoffmann
118	! allocation and initialisation of necessary data arrays for the two-moment
119	! cloud physics scheme the two new prognostic equations (nr, qr):
120	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
121	! +tend_*, prr
122	!
123	! 1036 2012-10-22 13:43:42Z raasch
124	! code put under GPL (PALM 3.9)
125	!
126	! 1032 2012-10-21 13:03:21Z letzel
127	! save memory by not allocating pt_2 in case of neutral = .T.
128	!
129	! 1025 2012-10-07 16:04:41Z letzel
130	! bugfix: swap indices of mask for ghost boundaries
131	!
132	! 1015 2012-09-27 09:23:24Z raasch
133	! mask is set to zero for ghost boundaries
134	!
135	! 1010 2012-09-20 07:59:54Z raasch
136	! cpp switch __nopointer added for pointer free version
137	!
138	! 1003 2012-09-14 14:35:53Z raasch
139	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
140	!
141	! 1001 2012-09-13 14:08:46Z raasch
142	! all actions concerning leapfrog scheme removed
143	!
144	! 996 2012-09-07 10:41:47Z raasch
145	! little reformatting
146	!
147	! 978 2012-08-09 08:28:32Z fricke
148	! outflow damping layer removed
149	! roughness length for scalar quantites z0h added
150	! damping zone for the potential temperatur in case of non-cyclic lateral
151	! boundaries added
152	! initialization of ptdf_x, ptdf_y
153	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
154	!
155	! 849 2012-03-15 10:35:09Z raasch
156	! init_particles renamed lpm_init
157	!
158	! 825 2012-02-19 03:03:44Z raasch
159	! wang_collision_kernel renamed wang_kernel
160	!
161	! Revision 1.1 1998/03/09 16:22:22 raasch
162	! Initial revision
163	!
164	!
165	! Description:
166	! ------------
167	! Allocation of arrays and initialization of the 3D model via
168	! a) pre-run the 1D model
169	! or
170	! b) pre-set constant linear profiles
171	! or
172	! c) read values of a previous run
173	!------------------------------------------------------------------------------!
174
175	USE advec_ws
176
177	USE arrays_3d
178
179	USE cloud_parameters, &
180	ONLY: nc_const, precipitation_amount, precipitation_rate, prr
181
182	USE constants, &
183	ONLY: pi
184
185	USE control_parameters
186
187	USE grid_variables, &
188	ONLY: dx, dy
189
190	USE indices
191
192	USE lpm_init_mod, &
193	ONLY: lpm_init
194
195	USE kinds
196
197	USE ls_forcing_mod
198
199	USE model_1d, &
200	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
201
202	USE netcdf_control
203
204	USE particle_attributes, &
205	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
206
207	USE pegrid
208
209	USE random_function_mod
210
211	USE random_generator_parallel, &
212	ONLY: random_number_parallel, random_seed_parallel, random_dummy, &
213	id_random_array, seq_random_array
214
215	USE statistics, &
216	ONLY: hom, hom_sum, pr_palm, rmask, spectrum_x, spectrum_y, &
217	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
218	sums_l_l, sums_up_fraction_l, sums_wsts_bc_l, ts_value, &
219	weight_pres, weight_substep
220
221	USE transpose_indices
222
223	IMPLICIT NONE
224
225	INTEGER(iwp) :: i !:
226	INTEGER(iwp) :: ind_array(1) !:
227	INTEGER(iwp) :: j !:
228	INTEGER(iwp) :: k !:
229	INTEGER(iwp) :: sr !:
230
231	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !:
232
233	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !:
234	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !:
235
236	REAL(wp), DIMENSION(1:2) :: volume_flow_area_l !:
237	REAL(wp), DIMENSION(1:2) :: volume_flow_initial_l !:
238
239	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !:
240	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !:
241
242
243	CALL location_message( 'allocating arrays', .FALSE. )
244	!
245	!-- Allocate arrays
246	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
247	ngp_3d(0:statistic_regions), &
248	ngp_3d_inner(0:statistic_regions), &
249	ngp_3d_inner_l(0:statistic_regions), &
250	ngp_3d_inner_tmp(0:statistic_regions), &
251	sums_divnew_l(0:statistic_regions), &
252	sums_divold_l(0:statistic_regions) )
253	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
254	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
255	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
256	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
257	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
258	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
259	sums(nzb:nzt+1,pr_palm+max_pr_user), &
260	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
261	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
262	sums_up_fraction_l(10,3,0:statistic_regions), &
263	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
264	ts_value(dots_max,0:statistic_regions) )
265	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
266
267	ALLOCATE( rif(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
268	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
269	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
270	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
271	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
272	z0h(nysg:nyng,nxlg:nxrg) )
273
274	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
275	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
276	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
277	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
278	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
279
280	#if defined( __nopointer )
281	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
282	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
283	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
284	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
285	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
286	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
287	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
288	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
289	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
290	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
291	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
292	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
293	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
294	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
295	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
296	#else
297	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
298	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
299	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
300	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
301	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
302	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
303	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
304	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
305	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
306	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
307	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
308	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
309	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
310	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
311	IF ( .NOT. neutral ) THEN
312	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
313	ENDIF
314	#endif
315
316	!
317	!-- Following array is required for perturbation pressure within the iterative
318	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
319	!-- the weighted average of the substeps and cannot be used in the Poisson
320	!-- solver.
321	IF ( psolver == 'sor' ) THEN
322	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
323	ELSEIF ( psolver == 'multigrid' ) THEN
324	!
325	!-- For performance reasons, multigrid is using one ghost layer only
326	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
327	ENDIF
328
329	!
330	!-- Array for storing constant coeffficients of the tridiagonal solver
331	IF ( psolver == 'poisfft' ) THEN
332	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
333	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
334	ENDIF
335
336	IF ( humidity .OR. passive_scalar ) THEN
337	!
338	!-- 2D-humidity/scalar arrays
339	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
340	qsws(nysg:nyng,nxlg:nxrg), &
341	qswst(nysg:nyng,nxlg:nxrg) )
342
343	!
344	!-- 3D-humidity/scalar arrays
345	#if defined( __nopointer )
346	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
347	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
348	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
349	#else
350	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
351	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
352	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
353	#endif
354
355	!
356	!-- 3D-arrays needed for humidity only
357	IF ( humidity ) THEN
358	#if defined( __nopointer )
359	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
360	#else
361	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
362	#endif
363
364	IF ( cloud_physics ) THEN
365
366	!
367	!-- Liquid water content
368	#if defined( __nopointer )
369	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
370	#else
371	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
372	#endif
373	!
374	!-- Precipitation amount and rate (only needed if output is switched)
375	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
376	precipitation_rate(nysg:nyng,nxlg:nxrg) )
377
378	IF ( icloud_scheme == 0 ) THEN
379	!
380	!-- 1D-arrays
381	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
382	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
383	!
384	!-- 3D-cloud water content
385	#if defined( __nopointer )
386	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
387	#else
388	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
389	#endif
390
391	IF ( precipitation ) THEN
392	!
393	!-- 1D-arrays
394	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
395
396	!
397	!-- 2D-rain water content and rain drop concentration arrays
398	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
399	qrsws(nysg:nyng,nxlg:nxrg), &
400	qrswst(nysg:nyng,nxlg:nxrg), &
401	nrs(nysg:nyng,nxlg:nxrg), &
402	nrsws(nysg:nyng,nxlg:nxrg), &
403	nrswst(nysg:nyng,nxlg:nxrg) )
404	!
405	!-- 3D-rain water content, rain drop concentration arrays
406	#if defined( __nopointer )
407	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
408	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
409	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
410	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
411	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
412	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
413	#else
414	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
415	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
416	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
417	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
418	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
419	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
420	#endif
421	!
422	!-- 3d-precipitation rate
423	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
424	ENDIF
425
426	ENDIF
427	ENDIF
428
429	IF ( cloud_droplets ) THEN
430	!
431	!-- Liquid water content, change in liquid water content
432	#if defined( __nopointer )
433	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
434	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
435	#else
436	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
437	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
438	#endif
439	!
440	!-- Real volume of particles (with weighting), volume of particles
441	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
442	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
443	ENDIF
444
445	ENDIF
446
447	ENDIF
448
449	IF ( ocean ) THEN
450	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
451	saswst(nysg:nyng,nxlg:nxrg) )
452	#if defined( __nopointer )
453	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
454	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
455	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
456	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
457	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
458	#else
459	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
460	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
461	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
462	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
463	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
464	prho => prho_1
465	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
466	! density to be apointer
467	#endif
468	IF ( humidity_remote ) THEN
469	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
470	qswst_remote = 0.0_wp
471	ENDIF
472	ENDIF
473
474	!
475	!-- 3D-array for storing the dissipation, needed for calculating the sgs
476	!-- particle velocities
477	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence .OR. &
478	num_acc_per_node > 0 ) THEN
479	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
480	ENDIF
481
482	IF ( dt_dosp /= 9999999.9_wp ) THEN
483	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
484	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
485	spectrum_x = 0.0_wp
486	spectrum_y = 0.0_wp
487	ENDIF
488
489	!
490	!-- 1D-array for large scale subsidence velocity
491	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
492	ALLOCATE ( w_subs(nzb:nzt+1) )
493	w_subs = 0.0_wp
494	ENDIF
495
496	!
497	!-- ID-array and state-space-array for the parallel random number generator
498	IF ( random_generator == 'random-parallel' ) THEN
499	ALLOCATE ( seq_random_array(5,nysg:nyng,nxlg:nxrg) )
500	ALLOCATE ( id_random_array(0:ny,0:nx) )
501	seq_random_array = 0
502	id_random_array = 0
503	ENDIF
504
505	!
506	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
507	IF ( plant_canopy ) THEN
508	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
509	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
510	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
511	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
512	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
513
514	IF ( passive_scalar ) THEN
515	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
516	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
517	ENDIF
518
519	IF ( cthf /= 0.0_wp ) THEN
520	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
521	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
522	ENDIF
523
524	ENDIF
525
526	!
527	!-- 4D-array for storing the Rif-values at vertical walls
528	IF ( topography /= 'flat' ) THEN
529	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
530	rif_wall = 0.0_wp
531	ENDIF
532
533	!
534	!-- Arrays to store velocity data from t-dt and the phase speeds which
535	!-- are needed for radiation boundary conditions
536	IF ( outflow_l ) THEN
537	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
538	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
539	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
540	ENDIF
541	IF ( outflow_r ) THEN
542	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
543	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
544	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
545	ENDIF
546	IF ( outflow_l .OR. outflow_r ) THEN
547	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
548	c_w(nzb:nzt+1,nysg:nyng) )
549	ENDIF
550	IF ( outflow_s ) THEN
551	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
552	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
553	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
554	ENDIF
555	IF ( outflow_n ) THEN
556	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
557	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
558	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
559	ENDIF
560	IF ( outflow_s .OR. outflow_n ) THEN
561	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
562	c_w(nzb:nzt+1,nxlg:nxrg) )
563	ENDIF
564	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
565	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
566	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
567	ENDIF
568
569
570	#if ! defined( __nopointer )
571	!
572	!-- Initial assignment of the pointers
573	e => e_1; e_p => e_2; te_m => e_3
574	IF ( .NOT. neutral ) THEN
575	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
576	ELSE
577	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
578	ENDIF
579	u => u_1; u_p => u_2; tu_m => u_3
580	v => v_1; v_p => v_2; tv_m => v_3
581	w => w_1; w_p => w_2; tw_m => w_3
582
583	IF ( humidity .OR. passive_scalar ) THEN
584	q => q_1; q_p => q_2; tq_m => q_3
585	IF ( humidity ) THEN
586	vpt => vpt_1
587	IF ( cloud_physics ) THEN
588	ql => ql_1
589	IF ( icloud_scheme == 0 ) THEN
590	qc => qc_1
591	IF ( precipitation ) THEN
592	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
593	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
594	ENDIF
595	ENDIF
596	ENDIF
597	ENDIF
598	IF ( cloud_droplets ) THEN
599	ql => ql_1
600	ql_c => ql_2
601	ENDIF
602	ENDIF
603
604	IF ( ocean ) THEN
605	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
606	ENDIF
607	#endif
608
609	!
610	!-- Allocate arrays containing the RK coefficient for calculation of
611	!-- perturbation pressure and turbulent fluxes. At this point values are
612	!-- set for pressure calculation during initialization (where no timestep
613	!-- is done). Further below the values needed within the timestep scheme
614	!-- will be set.
615	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
616	weight_pres(1:intermediate_timestep_count_max) )
617	weight_substep = 1.0_wp
618	weight_pres = 1.0_wp
619	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
620
621	CALL location_message( 'finished', .TRUE. )
622	!
623	!-- Initialize model variables
624	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
625	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
626	!
627	!-- First model run of a possible job queue.
628	!-- Initial profiles of the variables must be computes.
629	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
630
631	CALL location_message( 'initializing with 1D model profiles', .FALSE. )
632	!
633	!-- Use solutions of the 1D model as initial profiles,
634	!-- start 1D model
635	CALL init_1d_model
636	!
637	!-- Transfer initial profiles to the arrays of the 3D model
638	DO i = nxlg, nxrg
639	DO j = nysg, nyng
640	e(:,j,i) = e1d
641	kh(:,j,i) = kh1d
642	km(:,j,i) = km1d
643	pt(:,j,i) = pt_init
644	u(:,j,i) = u1d
645	v(:,j,i) = v1d
646	ENDDO
647	ENDDO
648
649	IF ( humidity .OR. passive_scalar ) THEN
650	DO i = nxlg, nxrg
651	DO j = nysg, nyng
652	q(:,j,i) = q_init
653	ENDDO
654	ENDDO
655	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
656	precipitation ) THEN
657	DO i = nxlg, nxrg
658	DO j = nysg, nyng
659	qr(:,j,i) = 0.0_wp
660	nr(:,j,i) = 0.0_wp
661	ENDDO
662	ENDDO
663	!
664	!-- Initialze nc_1d with default value
665	nc_1d(:) = nc_const
666
667	ENDIF
668	ENDIF
669
670	IF ( .NOT. constant_diffusion ) THEN
671	DO i = nxlg, nxrg
672	DO j = nysg, nyng
673	e(:,j,i) = e1d
674	ENDDO
675	ENDDO
676	!
677	!-- Store initial profiles for output purposes etc.
678	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
679
680	IF ( prandtl_layer ) THEN
681	rif = rif1d(nzb+1)
682	ts = 0.0_wp ! could actually be computed more accurately in the
683	! 1D model. Update when opportunity arises.
684	us = us1d
685	usws = usws1d
686	vsws = vsws1d
687	ELSE
688	ts = 0.0_wp ! must be set, because used in
689	rif = 0.0_wp ! flowste
690	us = 0.0_wp
691	usws = 0.0_wp
692	vsws = 0.0_wp
693	ENDIF
694
695	ELSE
696	e = 0.0_wp ! must be set, because used in
697	rif = 0.0_wp ! flowste
698	ts = 0.0_wp
699	us = 0.0_wp
700	usws = 0.0_wp
701	vsws = 0.0_wp
702	ENDIF
703	uswst = top_momentumflux_u
704	vswst = top_momentumflux_v
705
706	!
707	!-- In every case qs = 0.0 (see also pt)
708	!-- This could actually be computed more accurately in the 1D model.
709	!-- Update when opportunity arises!
710	IF ( humidity .OR. passive_scalar ) THEN
711	qs = 0.0_wp
712	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
713	precipitation ) THEN
714	qrs = 0.0_wp
715	nrs = 0.0_wp
716	ENDIF
717	ENDIF
718
719	!
720	!-- inside buildings set velocities back to zero
721	IF ( topography /= 'flat' ) THEN
722	DO i = nxl-1, nxr+1
723	DO j = nys-1, nyn+1
724	u(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
725	v(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
726	ENDDO
727	ENDDO
728
729	!
730	!-- WARNING: The extra boundary conditions set after running the
731	!-- ------- 1D model impose an error on the divergence one layer
732	!-- below the topography; need to correct later
733	!-- ATTENTION: Provisional correction for Piacsek & Williams
734	!-- --------- advection scheme: keep u and v zero one layer below
735	!-- the topography.
736	IF ( ibc_uv_b == 1 ) THEN
737	!
738	!-- Neumann condition
739	DO i = nxl-1, nxr+1
740	DO j = nys-1, nyn+1
741	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
742	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
743	ENDDO
744	ENDDO
745
746	ENDIF
747
748	ENDIF
749
750	CALL location_message( 'finished', .TRUE. )
751
752	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
753	THEN
754
755	CALL location_message( 'initializing with constant profiles', .FALSE. )
756	!
757	!-- Overwrite initial profiles in case of nudging
758	IF ( nudging ) THEN
759	pt_init = ptnudge(:,1)
760	u_init = unudge(:,1)
761	v_init = vnudge(:,1)
762	IF ( humidity .OR. passive_scalar ) THEN
763	q_init = qnudge(:,1)
764	ENDIF
765
766	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
767	'scalars from NUDGING_DATA are used.'
768	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
769	ENDIF
770
771	!
772	!-- Use constructed initial profiles (velocity constant with height,
773	!-- temperature profile with constant gradient)
774	DO i = nxlg, nxrg
775	DO j = nysg, nyng
776	pt(:,j,i) = pt_init
777	u(:,j,i) = u_init
778	v(:,j,i) = v_init
779	ENDDO
780	ENDDO
781
782	!
783	!-- Set initial horizontal velocities at the lowest computational grid
784	!-- levels to zero in order to avoid too small time steps caused by the
785	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
786	!-- in the limiting formula!). The original values are stored to be later
787	!-- used for volume flow control.
788	IF ( ibc_uv_b /= 1 ) THEN
789	DO i = nxlg, nxrg
790	DO j = nysg, nyng
791	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0_wp
792	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0_wp
793	ENDDO
794	ENDDO
795	ENDIF
796
797	IF ( humidity .OR. passive_scalar ) THEN
798	DO i = nxlg, nxrg
799	DO j = nysg, nyng
800	q(:,j,i) = q_init
801	ENDDO
802	ENDDO
803	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
804	!
805	!-- Initialze nc_1d with default value
806	nc_1d(:) = nc_const
807
808	IF ( precipitation ) THEN
809	DO i = nxlg, nxrg
810	DO j = nysg, nyng
811	qr(:,j,i) = 0.0_wp
812	nr(:,j,i) = 0.0_wp
813	ENDDO
814	ENDDO
815	ENDIF
816
817	ENDIF
818	ENDIF
819
820	IF ( ocean ) THEN
821	DO i = nxlg, nxrg
822	DO j = nysg, nyng
823	sa(:,j,i) = sa_init
824	ENDDO
825	ENDDO
826	ENDIF
827
828	IF ( constant_diffusion ) THEN
829	km = km_constant
830	kh = km / prandtl_number
831	e = 0.0_wp
832	ELSEIF ( e_init > 0.0_wp ) THEN
833	DO k = nzb+1, nzt
834	km(k,:,:) = 0.1_wp * l_grid(k) * SQRT( e_init )
835	ENDDO
836	km(nzb,:,:) = km(nzb+1,:,:)
837	km(nzt+1,:,:) = km(nzt,:,:)
838	kh = km / prandtl_number
839	e = e_init
840	ELSE
841	IF ( .NOT. ocean ) THEN
842	kh = 0.01_wp ! there must exist an initial diffusion, because
843	km = 0.01_wp ! otherwise no TKE would be produced by the
844	! production terms, as long as not yet
845	! e = (u/cm)*2 at k=nzb+1
846	ELSE
847	kh = 0.00001_wp
848	km = 0.00001_wp
849	ENDIF
850	e = 0.0_wp
851	ENDIF
852	rif = 0.0_wp
853	ts = 0.0_wp
854	us = 0.0_wp
855	usws = 0.0_wp
856	uswst = top_momentumflux_u
857	vsws = 0.0_wp
858	vswst = top_momentumflux_v
859	IF ( humidity .OR. passive_scalar ) qs = 0.0_wp
860
861	!
862	!-- Compute initial temperature field and other constants used in case
863	!-- of a sloping surface
864	IF ( sloping_surface ) CALL init_slope
865
866	CALL location_message( 'finished', .TRUE. )
867
868	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
869	THEN
870
871	CALL location_message( 'initializing by user', .FALSE. )
872	!
873	!-- Initialization will completely be done by the user
874	CALL user_init_3d_model
875
876	CALL location_message( 'finished', .TRUE. )
877
878	ENDIF
879
880	CALL location_message( 'initializing statistics, boundary conditions, etc.', &
881	.FALSE. )
882
883	!
884	!-- Bottom boundary
885	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
886	u(nzb,:,:) = 0.0_wp
887	v(nzb,:,:) = 0.0_wp
888	ENDIF
889
890	!
891	!-- Apply channel flow boundary condition
892	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
893	u(nzt+1,:,:) = 0.0_wp
894	v(nzt+1,:,:) = 0.0_wp
895	ENDIF
896
897	!
898	!-- Calculate virtual potential temperature
899	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
900
901	!
902	!-- Store initial profiles for output purposes etc.
903	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
904	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
905	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
906	hom(nzb,1,5,:) = 0.0_wp
907	hom(nzb,1,6,:) = 0.0_wp
908	ENDIF
909	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
910	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
911	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
912
913	IF ( ocean ) THEN
914	!
915	!-- Store initial salinity profile
916	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
917	ENDIF
918
919	IF ( humidity ) THEN
920	!
921	!-- Store initial profile of total water content, virtual potential
922	!-- temperature
923	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
924	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
925	IF ( cloud_physics .OR. cloud_droplets ) THEN
926	!
927	!-- Store initial profile of specific humidity and potential
928	!-- temperature
929	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
930	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
931	ENDIF
932	ENDIF
933
934	IF ( passive_scalar ) THEN
935	!
936	!-- Store initial scalar profile
937	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
938	ENDIF
939
940	!
941	!-- Initialize the random number generators (from numerical recipes)
942	CALL random_function_ini
943	IF ( random_generator == 'random-parallel' ) THEN
944	CALL random_function_ini
945	!- asigning an ID to every vertical gridpoint column
946	DO j=0,ny
947	DO i=0,nx
948	id_random_array(j,i) = 1000000*i + j
949	END DO
950	ENDDO
951	!- executing the initial ran_parallel
952	DO j = nysg, nyng
953	DO i = nxlg, nxrg
954	CALL random_seed_parallel (random_sequence=id_random_array(j, i))
955	CALL random_number_parallel (random_dummy)
956	CALL random_seed_parallel (get=seq_random_array(:, j, i))
957	END DO
958	ENDDO
959	ENDIF
960
961	!
962	!-- Initialize fluxes at bottom surface
963	IF ( use_surface_fluxes ) THEN
964
965	IF ( constant_heatflux ) THEN
966	!
967	!-- Heat flux is prescribed
968	IF ( random_heatflux ) THEN
969	CALL disturb_heatflux
970	ELSE
971	shf = surface_heatflux
972	!
973	!-- Initialize shf with data from external file LSF_DATA
974	IF ( large_scale_forcing .AND. lsf_surf ) THEN
975	CALL ls_forcing_surf ( simulated_time )
976	ENDIF
977
978	!
979	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
980	IF ( TRIM( topography ) /= 'flat' ) THEN
981	DO i = nxlg, nxrg
982	DO j = nysg, nyng
983	IF ( nzb_s_inner(j,i) /= 0 ) THEN
984	shf(j,i) = wall_heatflux(0)
985	ENDIF
986	ENDDO
987	ENDDO
988	ENDIF
989	ENDIF
990	ENDIF
991
992	!
993	!-- Determine the near-surface water flux
994	IF ( humidity .OR. passive_scalar ) THEN
995	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
996	precipitation ) THEN
997	qrsws = 0.0_wp
998	nrsws = 0.0_wp
999	ENDIF
1000	IF ( constant_waterflux ) THEN
1001	qsws = surface_waterflux
1002	!
1003	!-- Over topography surface_waterflux is replaced by
1004	!-- wall_humidityflux(0)
1005	IF ( TRIM( topography ) /= 'flat' ) THEN
1006	wall_qflux = wall_humidityflux
1007	DO i = nxlg, nxrg
1008	DO j = nysg, nyng
1009	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1010	qsws(j,i) = wall_qflux(0)
1011	ENDIF
1012	ENDDO
1013	ENDDO
1014	ENDIF
1015	ENDIF
1016	ENDIF
1017
1018	ENDIF
1019
1020	!
1021	!-- Initialize fluxes at top surface
1022	!-- Currently, only the heatflux and salinity flux can be prescribed.
1023	!-- The latent flux is zero in this case!
1024	IF ( use_top_fluxes ) THEN
1025
1026	IF ( constant_top_heatflux ) THEN
1027	!
1028	!-- Heat flux is prescribed
1029	tswst = top_heatflux
1030
1031	IF ( humidity .OR. passive_scalar ) THEN
1032	qswst = 0.0_wp
1033	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1034	precipitation ) THEN
1035	nrswst = 0.0_wp
1036	qrswst = 0.0_wp
1037	ENDIF
1038	ENDIF
1039
1040	IF ( ocean ) THEN
1041	saswsb = bottom_salinityflux
1042	saswst = top_salinityflux
1043	ENDIF
1044	ENDIF
1045
1046	!
1047	!-- Initialization in case of a coupled model run
1048	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1049	tswst = 0.0_wp
1050	ENDIF
1051
1052	ENDIF
1053
1054	!
1055	!-- Initialize Prandtl layer quantities
1056	IF ( prandtl_layer ) THEN
1057
1058	z0 = roughness_length
1059	z0h = z0h_factor * z0
1060
1061	IF ( .NOT. constant_heatflux ) THEN
1062	!
1063	!-- Surface temperature is prescribed. Here the heat flux cannot be
1064	!-- simply estimated, because therefore rif, u* and theta* would have
1065	!-- to be computed by iteration. This is why the heat flux is assumed
1066	!-- to be zero before the first time step. It approaches its correct
1067	!-- value in the course of the first few time steps.
1068	shf = 0.0_wp
1069	ENDIF
1070
1071	IF ( humidity .OR. passive_scalar ) THEN
1072	IF ( .NOT. constant_waterflux ) qsws = 0.0_wp
1073	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1074	precipitation ) THEN
1075	qrsws = 0.0_wp
1076	nrsws = 0.0_wp
1077	ENDIF
1078	ENDIF
1079
1080	ENDIF
1081
1082	!
1083	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1084	!-- the reference state will be set (overwritten) in init_ocean)
1085	IF ( use_single_reference_value ) THEN
1086	IF ( .NOT. humidity ) THEN
1087	ref_state(:) = pt_reference
1088	ELSE
1089	ref_state(:) = vpt_reference
1090	ENDIF
1091	ELSE
1092	IF ( .NOT. humidity ) THEN
1093	ref_state(:) = pt_init(:)
1094	ELSE
1095	ref_state(:) = vpt(:,nys,nxl)
1096	ENDIF
1097	ENDIF
1098
1099	!
1100	!-- For the moment, vertical velocity is zero
1101	w = 0.0_wp
1102
1103	!
1104	!-- Initialize array sums (must be defined in first call of pres)
1105	sums = 0.0_wp
1106
1107	!
1108	!-- In case of iterative solvers, p must get an initial value
1109	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
1110
1111	!
1112	!-- Treating cloud physics, liquid water content and precipitation amount
1113	!-- are zero at beginning of the simulation
1114	IF ( cloud_physics ) THEN
1115	ql = 0.0_wp
1116	IF ( precipitation ) precipitation_amount = 0.0_wp
1117	IF ( icloud_scheme == 0 ) THEN
1118	qc = 0.0_wp
1119	nc_1d = nc_const
1120	ENDIF
1121	ENDIF
1122	!
1123	!-- Impose vortex with vertical axis on the initial velocity profile
1124	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1125	CALL init_rankine
1126	ENDIF
1127
1128	!
1129	!-- Impose temperature anomaly (advection test only)
1130	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1131	CALL init_pt_anomaly
1132	ENDIF
1133
1134	!
1135	!-- If required, change the surface temperature at the start of the 3D run
1136	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
1137	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1138	ENDIF
1139
1140	!
1141	!-- If required, change the surface humidity/scalar at the start of the 3D
1142	!-- run
1143	IF ( ( humidity .OR. passive_scalar ) .AND. &
1144	q_surface_initial_change /= 0.0_wp ) THEN
1145	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1146	ENDIF
1147
1148	!
1149	!-- Initialize old and new time levels.
1150	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
1151	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1152
1153	IF ( humidity .OR. passive_scalar ) THEN
1154	tq_m = 0.0_wp
1155	q_p = q
1156	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1157	precipitation ) THEN
1158	tqr_m = 0.0_wp
1159	qr_p = qr
1160	tnr_m = 0.0_wp
1161	nr_p = nr
1162	ENDIF
1163	ENDIF
1164
1165	IF ( ocean ) THEN
1166	tsa_m = 0.0_wp
1167	sa_p = sa
1168	ENDIF
1169
1170	CALL location_message( 'finished', .TRUE. )
1171
1172	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1173	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1174	THEN
1175
1176	CALL location_message( 'initializing in case of restart / cyclic_fill', &
1177	.FALSE. )
1178	!
1179	!-- When reading data for cyclic fill of 3D prerun data files, read
1180	!-- some of the global variables from the restart file which are required
1181	!-- for initializing the inflow
1182	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1183
1184	DO i = 0, io_blocks-1
1185	IF ( i == io_group ) THEN
1186	CALL read_parts_of_var_list
1187	CALL close_file( 13 )
1188	ENDIF
1189	#if defined( __parallel )
1190	CALL MPI_BARRIER( comm2d, ierr )
1191	#endif
1192	ENDDO
1193
1194	ENDIF
1195
1196	!
1197	!-- Read binary data from restart file
1198	DO i = 0, io_blocks-1
1199	IF ( i == io_group ) THEN
1200	CALL read_3d_binary
1201	ENDIF
1202	#if defined( __parallel )
1203	CALL MPI_BARRIER( comm2d, ierr )
1204	#endif
1205	ENDDO
1206
1207	!
1208	!-- Initialization of the turbulence recycling method
1209	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1210	turbulent_inflow ) THEN
1211	!
1212	!-- First store the profiles to be used at the inflow.
1213	!-- These profiles are the (temporally) and horizontally averaged vertical
1214	!-- profiles from the prerun. Alternatively, prescribed profiles
1215	!-- for u,v-components can be used.
1216	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
1217
1218	IF ( use_prescribed_profile_data ) THEN
1219	mean_inflow_profiles(:,1) = u_init ! u
1220	mean_inflow_profiles(:,2) = v_init ! v
1221	ELSE
1222	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1223	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1224	ENDIF
1225	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1226	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1227
1228	!
1229	!-- If necessary, adjust the horizontal flow field to the prescribed
1230	!-- profiles
1231	IF ( use_prescribed_profile_data ) THEN
1232	DO i = nxlg, nxrg
1233	DO j = nysg, nyng
1234	DO k = nzb, nzt+1
1235	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1236	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1237	ENDDO
1238	ENDDO
1239	ENDDO
1240	ENDIF
1241
1242	!
1243	!-- Use these mean profiles at the inflow (provided that Dirichlet
1244	!-- conditions are used)
1245	IF ( inflow_l ) THEN
1246	DO j = nysg, nyng
1247	DO k = nzb, nzt+1
1248	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1249	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1250	w(k,j,nxlg:-1) = 0.0_wp
1251	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1252	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1253	ENDDO
1254	ENDDO
1255	ENDIF
1256
1257	!
1258	!-- Calculate the damping factors to be used at the inflow. For a
1259	!-- turbulent inflow the turbulent fluctuations have to be limited
1260	!-- vertically because otherwise the turbulent inflow layer will grow
1261	!-- in time.
1262	IF ( inflow_damping_height == 9999999.9_wp ) THEN
1263	!
1264	!-- Default: use the inversion height calculated by the prerun; if
1265	!-- this is zero, inflow_damping_height must be explicitly
1266	!-- specified.
1267	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
1268	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1269	ELSE
1270	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1271	'explicitly specified because&the inversion height ', &
1272	'calculated by the prerun is zero.'
1273	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1274	ENDIF
1275
1276	ENDIF
1277
1278	IF ( inflow_damping_width == 9999999.9_wp ) THEN
1279	!
1280	!-- Default for the transition range: one tenth of the undamped
1281	!-- layer
1282	inflow_damping_width = 0.1_wp * inflow_damping_height
1283
1284	ENDIF
1285
1286	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1287
1288	DO k = nzb, nzt+1
1289
1290	IF ( zu(k) <= inflow_damping_height ) THEN
1291	inflow_damping_factor(k) = 1.0_wp
1292	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1293	inflow_damping_factor(k) = 1.0_wp - &
1294	( zu(k) - inflow_damping_height ) / &
1295	inflow_damping_width
1296	ELSE
1297	inflow_damping_factor(k) = 0.0_wp
1298	ENDIF
1299
1300	ENDDO
1301
1302	ENDIF
1303
1304	!
1305	!-- Inside buildings set velocities and TKE back to zero
1306	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1307	topography /= 'flat' ) THEN
1308	!
1309	!-- Inside buildings set velocities and TKE back to zero.
1310	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1311	!-- maybe revise later.
1312	DO i = nxlg, nxrg
1313	DO j = nysg, nyng
1314	u (nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1315	v (nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1316	w (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1317	e (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1318	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1319	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1320	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1321	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1322	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1323	ENDDO
1324	ENDDO
1325
1326	ENDIF
1327
1328	!
1329	!-- Calculate initial temperature field and other constants used in case
1330	!-- of a sloping surface
1331	IF ( sloping_surface ) CALL init_slope
1332
1333	!
1334	!-- Initialize new time levels (only done in order to set boundary values
1335	!-- including ghost points)
1336	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1337	IF ( humidity .OR. passive_scalar ) THEN
1338	q_p = q
1339	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1340	precipitation ) THEN
1341	qr_p = qr
1342	nr_p = nr
1343	ENDIF
1344	ENDIF
1345	IF ( ocean ) sa_p = sa
1346
1347	!
1348	!-- Allthough tendency arrays are set in prognostic_equations, they have
1349	!-- have to be predefined here because they are used (but multiplied with 0)
1350	!-- there before they are set.
1351	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
1352	IF ( humidity .OR. passive_scalar ) THEN
1353	tq_m = 0.0_wp
1354	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1355	precipitation ) THEN
1356	tqr_m = 0.0_wp
1357	tnr_m = 0.0_wp
1358	ENDIF
1359	ENDIF
1360	IF ( ocean ) tsa_m = 0.0_wp
1361
1362	CALL location_message( 'finished', .TRUE. )
1363
1364	ELSE
1365	!
1366	!-- Actually this part of the programm should not be reached
1367	message_string = 'unknown initializing problem'
1368	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1369	ENDIF
1370
1371
1372	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1373	!
1374	!-- Initialize old timelevels needed for radiation boundary conditions
1375	IF ( outflow_l ) THEN
1376	u_m_l(:,:,:) = u(:,:,1:2)
1377	v_m_l(:,:,:) = v(:,:,0:1)
1378	w_m_l(:,:,:) = w(:,:,0:1)
1379	ENDIF
1380	IF ( outflow_r ) THEN
1381	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1382	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1383	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1384	ENDIF
1385	IF ( outflow_s ) THEN
1386	u_m_s(:,:,:) = u(:,0:1,:)
1387	v_m_s(:,:,:) = v(:,1:2,:)
1388	w_m_s(:,:,:) = w(:,0:1,:)
1389	ENDIF
1390	IF ( outflow_n ) THEN
1391	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1392	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1393	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1394	ENDIF
1395
1396	ENDIF
1397
1398	!
1399	!-- Calculate the initial volume flow at the right and north boundary
1400	IF ( conserve_volume_flow ) THEN
1401
1402	IF ( use_prescribed_profile_data ) THEN
1403
1404	volume_flow_initial_l = 0.0_wp
1405	volume_flow_area_l = 0.0_wp
1406
1407	IF ( nxr == nx ) THEN
1408	DO j = nys, nyn
1409	DO k = nzb_2d(j,nx)+1, nzt
1410	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1411	u_init(k) * dzw(k)
1412	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1413	ENDDO
1414	ENDDO
1415	ENDIF
1416
1417	IF ( nyn == ny ) THEN
1418	DO i = nxl, nxr
1419	DO k = nzb_2d(ny,i)+1, nzt
1420	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1421	v_init(k) * dzw(k)
1422	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1423	ENDDO
1424	ENDDO
1425	ENDIF
1426
1427	#if defined( __parallel )
1428	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1429	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1430	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1431	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1432
1433	#else
1434	volume_flow_initial = volume_flow_initial_l
1435	volume_flow_area = volume_flow_area_l
1436	#endif
1437
1438	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1439
1440	volume_flow_initial_l = 0.0_wp
1441	volume_flow_area_l = 0.0_wp
1442
1443	IF ( nxr == nx ) THEN
1444	DO j = nys, nyn
1445	DO k = nzb_2d(j,nx)+1, nzt
1446	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1447	hom_sum(k,1,0) * dzw(k)
1448	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1449	ENDDO
1450	ENDDO
1451	ENDIF
1452
1453	IF ( nyn == ny ) THEN
1454	DO i = nxl, nxr
1455	DO k = nzb_2d(ny,i)+1, nzt
1456	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1457	hom_sum(k,2,0) * dzw(k)
1458	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1459	ENDDO
1460	ENDDO
1461	ENDIF
1462
1463	#if defined( __parallel )
1464	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1465	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1466	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1467	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1468
1469	#else
1470	volume_flow_initial = volume_flow_initial_l
1471	volume_flow_area = volume_flow_area_l
1472	#endif
1473
1474	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1475
1476	volume_flow_initial_l = 0.0_wp
1477	volume_flow_area_l = 0.0_wp
1478
1479	IF ( nxr == nx ) THEN
1480	DO j = nys, nyn
1481	DO k = nzb_2d(j,nx)+1, nzt
1482	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1483	u(k,j,nx) * dzw(k)
1484	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1485	ENDDO
1486	ENDDO
1487	ENDIF
1488
1489	IF ( nyn == ny ) THEN
1490	DO i = nxl, nxr
1491	DO k = nzb_2d(ny,i)+1, nzt
1492	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1493	v(k,ny,i) * dzw(k)
1494	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1495	ENDDO
1496	ENDDO
1497	ENDIF
1498
1499	#if defined( __parallel )
1500	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1501	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1502	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1503	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1504
1505	#else
1506	volume_flow_initial = volume_flow_initial_l
1507	volume_flow_area = volume_flow_area_l
1508	#endif
1509
1510	ENDIF
1511
1512	!
1513	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1514	!-- from u\|v_bulk instead
1515	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1516	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1517	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1518	ENDIF
1519
1520	ENDIF
1521
1522	!
1523	!-- Initialize quantities for special advections schemes
1524	CALL init_advec
1525
1526	!
1527	!-- Impose random perturbation on the horizontal velocity field and then
1528	!-- remove the divergences from the velocity field at the initial stage
1529	IF ( create_disturbances .AND. &
1530	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1531	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1532
1533	CALL location_message( 'creating initial disturbances', .FALSE. )
1534	CALL disturb_field( nzb_u_inner, tend, u )
1535	CALL disturb_field( nzb_v_inner, tend, v )
1536	CALL location_message( 'finished', .TRUE. )
1537
1538	CALL location_message( 'calling pressure solver', .FALSE. )
1539	n_sor = nsor_ini
1540	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1541	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1542	!$acc copyin( weight_pres, weight_substep ) &
1543	!$acc copy( tri, tric, u, v, w )
1544	CALL pres
1545	!$acc end data
1546	n_sor = nsor
1547	CALL location_message( 'finished', .TRUE. )
1548
1549	ENDIF
1550
1551	!
1552	!-- Initialization of the leaf area density
1553	IF ( plant_canopy ) THEN
1554
1555	SELECT CASE ( TRIM( canopy_mode ) )
1556
1557	CASE( 'block' )
1558
1559	DO i = nxlg, nxrg
1560	DO j = nysg, nyng
1561	lad_s(:,j,i) = lad(:)
1562	cdc(:,j,i) = drag_coefficient
1563	IF ( passive_scalar ) THEN
1564	sls(:,j,i) = leaf_surface_concentration
1565	sec(:,j,i) = scalar_exchange_coefficient
1566	ENDIF
1567	ENDDO
1568	ENDDO
1569
1570	CASE DEFAULT
1571
1572	!
1573	!-- The DEFAULT case is reached either if the parameter
1574	!-- canopy mode contains a wrong character string or if the
1575	!-- user has coded a special case in the user interface.
1576	!-- There, the subroutine user_init_plant_canopy checks
1577	!-- which of these two conditions applies.
1578	CALL user_init_plant_canopy
1579
1580	END SELECT
1581
1582	CALL exchange_horiz( lad_s, nbgp )
1583	CALL exchange_horiz( cdc, nbgp )
1584
1585	IF ( passive_scalar ) THEN
1586	CALL exchange_horiz( sls, nbgp )
1587	CALL exchange_horiz( sec, nbgp )
1588	ENDIF
1589
1590	!
1591	!-- Sharp boundaries of the plant canopy in horizontal directions
1592	!-- In vertical direction the interpolation is retained, as the leaf
1593	!-- area density is initialised by prescribing a vertical profile
1594	!-- consisting of piecewise linear segments. The upper boundary
1595	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1596
1597	DO i = nxl, nxr
1598	DO j = nys, nyn
1599	DO k = nzb, nzt+1
1600	IF ( lad_s(k,j,i) > 0.0_wp ) THEN
1601	lad_u(k,j,i) = lad_s(k,j,i)
1602	lad_u(k,j,i+1) = lad_s(k,j,i)
1603	lad_v(k,j,i) = lad_s(k,j,i)
1604	lad_v(k,j+1,i) = lad_s(k,j,i)
1605	ENDIF
1606	ENDDO
1607	DO k = nzb, nzt
1608	lad_w(k,j,i) = 0.5_wp * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1609	ENDDO
1610	ENDDO
1611	ENDDO
1612
1613	lad_w(pch_index,:,:) = 0.0_wp
1614	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1615
1616	CALL exchange_horiz( lad_u, nbgp )
1617	CALL exchange_horiz( lad_v, nbgp )
1618	CALL exchange_horiz( lad_w, nbgp )
1619
1620	!
1621	!-- Initialisation of the canopy heat source distribution
1622	IF ( cthf /= 0.0_wp ) THEN
1623	!
1624	!-- Piecewise evaluation of the leaf area index by
1625	!-- integration of the leaf area density
1626	lai(:,:,:) = 0.0_wp
1627	DO i = nxlg, nxrg
1628	DO j = nysg, nyng
1629	DO k = pch_index-1, 0, -1
1630	lai(k,j,i) = lai(k+1,j,i) + &
1631	( 0.5_wp * ( lad_w(k+1,j,i) + &
1632	lad_s(k+1,j,i) ) * &
1633	( zw(k+1) - zu(k+1) ) ) + &
1634	( 0.5_wp * ( lad_w(k,j,i) + &
1635	lad_s(k+1,j,i) ) * &
1636	( zu(k+1) - zw(k) ) )
1637	ENDDO
1638	ENDDO
1639	ENDDO
1640
1641	!
1642	!-- Evaluation of the upward kinematic vertical heat flux within the
1643	!-- canopy
1644	DO i = nxlg, nxrg
1645	DO j = nysg, nyng
1646	DO k = 0, pch_index
1647	canopy_heat_flux(k,j,i) = cthf * &
1648	exp( -0.6_wp * lai(k,j,i) )
1649	ENDDO
1650	ENDDO
1651	ENDDO
1652
1653	!
1654	!-- The near surface heat flux is derived from the heat flux
1655	!-- distribution within the canopy
1656	shf(:,:) = canopy_heat_flux(0,:,:)
1657
1658	ENDIF
1659
1660	ENDIF
1661
1662	!
1663	!-- If required, initialize dvrp-software
1664	IF ( dt_dvrp /= 9999999.9_wp ) CALL init_dvrp
1665
1666	IF ( ocean ) THEN
1667	!
1668	!-- Initialize quantities needed for the ocean model
1669	CALL init_ocean
1670
1671	ELSE
1672	!
1673	!-- Initialize quantities for handling cloud physics
1674	!-- This routine must be called before lpm_init, because
1675	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1676	!-- lpm_init) is not defined.
1677	CALL init_cloud_physics
1678	ENDIF
1679
1680	!
1681	!-- If required, initialize particles
1682	IF ( particle_advection ) CALL lpm_init
1683
1684	!
1685	!-- Initialize the ws-scheme.
1686	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1687
1688	!
1689	!-- Setting weighting factors for calculation of perturbation pressure
1690	!-- and turbulent quantities from the RK substeps
1691	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1692
1693	weight_substep(1) = 1._wp/6._wp
1694	weight_substep(2) = 3._wp/10._wp
1695	weight_substep(3) = 8._wp/15._wp
1696
1697	weight_pres(1) = 1._wp/3._wp
1698	weight_pres(2) = 5._wp/12._wp
1699	weight_pres(3) = 1._wp/4._wp
1700
1701	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1702
1703	weight_substep(1) = 1._wp/2._wp
1704	weight_substep(2) = 1._wp/2._wp
1705
1706	weight_pres(1) = 1._wp/2._wp
1707	weight_pres(2) = 1._wp/2._wp
1708
1709	ELSE ! for Euler-method
1710
1711	weight_substep(1) = 1.0_wp
1712	weight_pres(1) = 1.0_wp
1713
1714	ENDIF
1715
1716	!
1717	!-- Initialize Rayleigh damping factors
1718	rdf = 0.0_wp
1719	rdf_sc = 0.0_wp
1720	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
1721	IF ( .NOT. ocean ) THEN
1722	DO k = nzb+1, nzt
1723	IF ( zu(k) >= rayleigh_damping_height ) THEN
1724	rdf(k) = rayleigh_damping_factor * &
1725	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
1726	/ ( zu(nzt) - rayleigh_damping_height ) )&
1727	)**2
1728	ENDIF
1729	ENDDO
1730	ELSE
1731	DO k = nzt, nzb+1, -1
1732	IF ( zu(k) <= rayleigh_damping_height ) THEN
1733	rdf(k) = rayleigh_damping_factor * &
1734	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
1735	/ ( rayleigh_damping_height - zu(nzb+1)))&
1736	)**2
1737	ENDIF
1738	ENDDO
1739	ENDIF
1740	ENDIF
1741	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1742
1743	!
1744	!-- Initialize the starting level and the vertical smoothing factor used for
1745	!-- the external pressure gradient
1746	dp_smooth_factor = 1.0_wp
1747	IF ( dp_external ) THEN
1748	!
1749	!-- Set the starting level dp_level_ind_b only if it has not been set before
1750	!-- (e.g. in init_grid).
1751	IF ( dp_level_ind_b == 0 ) THEN
1752	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1753	dp_level_ind_b = ind_array(1) - 1 + nzb
1754	! MINLOC uses lower array bound 1
1755	ENDIF
1756	IF ( dp_smooth ) THEN
1757	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
1758	DO k = dp_level_ind_b+1, nzt
1759	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
1760	( REAL( k - dp_level_ind_b, KIND=wp ) / &
1761	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
1762	ENDDO
1763	ENDIF
1764	ENDIF
1765
1766	!
1767	!-- Initialize damping zone for the potential temperature in case of
1768	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1769	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1770	ptdf_x = 0.0_wp
1771	ptdf_y = 0.0_wp
1772	IF ( bc_lr_dirrad ) THEN
1773	DO i = nxl, nxr
1774	IF ( ( i * dx ) < pt_damping_width ) THEN
1775	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
1776	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
1777	REAL( pt_damping_width, KIND=wp ) ) ) )**2
1778	ENDIF
1779	ENDDO
1780	ELSEIF ( bc_lr_raddir ) THEN
1781	DO i = nxl, nxr
1782	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1783	ptdf_x(i) = pt_damping_factor * &
1784	SIN( pi * 0.5_wp * &
1785	( ( i - nx ) * dx + pt_damping_width ) / &
1786	REAL( pt_damping_width, KIND=wp ) )**2
1787	ENDIF
1788	ENDDO
1789	ELSEIF ( bc_ns_dirrad ) THEN
1790	DO j = nys, nyn
1791	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1792	ptdf_y(j) = pt_damping_factor * &
1793	SIN( pi * 0.5_wp * &
1794	( ( j - ny ) * dy + pt_damping_width ) / &
1795	REAL( pt_damping_width, KIND=wp ) )**2
1796	ENDIF
1797	ENDDO
1798	ELSEIF ( bc_ns_raddir ) THEN
1799	DO j = nys, nyn
1800	IF ( ( j * dy ) < pt_damping_width ) THEN
1801	ptdf_y(j) = pt_damping_factor * &
1802	SIN( pi * 0.5_wp * &
1803	( pt_damping_width - j * dy ) / &
1804	REAL( pt_damping_width, KIND=wp ) )**2
1805	ENDIF
1806	ENDDO
1807	ENDIF
1808
1809	!
1810	!-- Initialize local summation arrays for routine flow_statistics.
1811	!-- This is necessary because they may not yet have been initialized when they
1812	!-- are called from flow_statistics (or - depending on the chosen model run -
1813	!-- are never initialized)
1814	sums_divnew_l = 0.0_wp
1815	sums_divold_l = 0.0_wp
1816	sums_l_l = 0.0_wp
1817	sums_up_fraction_l = 0.0_wp
1818	sums_wsts_bc_l = 0.0_wp
1819
1820	!
1821	!-- Pre-set masks for regional statistics. Default is the total model domain.
1822	!-- Ghost points are excluded because counting values at the ghost boundaries
1823	!-- would bias the statistics
1824	rmask = 1.0_wp
1825	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
1826	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
1827
1828	!
1829	!-- User-defined initializing actions. Check afterwards, if maximum number
1830	!-- of allowed timeseries is exceeded
1831	CALL user_init
1832
1833	IF ( dots_num > dots_max ) THEN
1834	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1835	' its maximum of dots_max = ', dots_max, &
1836	' &Please increase dots_max in modules.f90.'
1837	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1838	ENDIF
1839
1840	!
1841	!-- Input binary data file is not needed anymore. This line must be placed
1842	!-- after call of user_init!
1843	CALL close_file( 13 )
1844
1845	!
1846	!-- Compute total sum of active mask grid points
1847	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1848	!-- total domain
1849	!-- ngp_3d: number of grid points of the total domain
1850	ngp_2dh_outer_l = 0
1851	ngp_2dh_outer = 0
1852	ngp_2dh_s_inner_l = 0
1853	ngp_2dh_s_inner = 0
1854	ngp_2dh_l = 0
1855	ngp_2dh = 0
1856	ngp_3d_inner_l = 0.0_wp
1857	ngp_3d_inner = 0
1858	ngp_3d = 0
1859	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1860
1861	DO sr = 0, statistic_regions
1862	DO i = nxl, nxr
1863	DO j = nys, nyn
1864	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
1865	!
1866	!-- All xy-grid points
1867	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1868	!
1869	!-- xy-grid points above topography
1870	DO k = nzb_s_outer(j,i), nz + 1
1871	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1872	ENDDO
1873	DO k = nzb_s_inner(j,i), nz + 1
1874	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1875	ENDDO
1876	!
1877	!-- All grid points of the total domain above topography
1878	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1879	( nz - nzb_s_inner(j,i) + 2 )
1880	ENDIF
1881	ENDDO
1882	ENDDO
1883	ENDDO
1884
1885	sr = statistic_regions + 1
1886	#if defined( __parallel )
1887	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1888	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1889	comm2d, ierr )
1890	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1891	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1892	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1893	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1894	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1895	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1896	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1897	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1898	MPI_SUM, comm2d, ierr )
1899	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1900	#else
1901	ngp_2dh = ngp_2dh_l
1902	ngp_2dh_outer = ngp_2dh_outer_l
1903	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1904	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1905	#endif
1906
1907	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1908	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1909
1910	!
1911	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1912	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1913	!-- the respective subdomain lie below the surface topography
1914	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1915	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1916	ngp_3d_inner(:) )
1917	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1918
1919	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1920
1921	CALL location_message( 'leaving init_3d_model', .TRUE. )
1922
1923	END SUBROUTINE init_3d_model

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