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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1405

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

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