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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1406

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

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