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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1188

Last change on this file since 1188 was 1182, checked in by raasch, 11 years ago
last commit documented, rc-file for example run updated
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1	#if defined( __ibmy_special )
2	@PROCESS NOOPTimize
3	#endif
4	SUBROUTINE init_3d_model
5
6	!--------------------------------------------------------------------------------!
7	! This file is part of PALM.
8	!
9	! PALM is free software: you can redistribute it and/or modify it under the terms
10	! of the GNU General Public License as published by the Free Software Foundation,
11	! either version 3 of the License, or (at your option) any later version.
12	!
13	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
14	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
15	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
16	!
17	! You should have received a copy of the GNU General Public License along with
18	! PALM. If not, see <http://www.gnu.org/licenses/>.
19	!
20	! Copyright 1997-2012 Leibniz University Hannover
21	!--------------------------------------------------------------------------------!
22	!
23	! Current revisions:
24	! ------------------
25	!
26	!
27	! Former revisions:
28	! -----------------
29	! $Id: init_3d_model.f90 1182 2013-06-14 09:07:24Z heinze $
30	!
31	! 1179 2013-06-14 05:57:58Z raasch
32	! allocate and set ref_state to be used in buoyancy terms
33	!
34	! 1171 2013-05-30 11:27:45Z raasch
35	! diss array is allocated with full size if accelerator boards are used
36	!
37	! 1159 2013-05-21 11:58:22Z fricke
38	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
39	!
40	! 1153 2013-05-10 14:33:08Z raasch
41	! diss array is allocated with dummy elements even if it is not needed
42	! (required by PGI 13.4 / CUDA 5.0)
43	!
44	! 1115 2013-03-26 18:16:16Z hoffmann
45	! unused variables removed
46	!
47	! 1113 2013-03-10 02:48:14Z raasch
48	! openACC directive modified
49	!
50	! 1111 2013-03-08 23:54:10Z raasch
51	! openACC directives added for pres
52	! array diss allocated only if required
53	!
54	! 1092 2013-02-02 11:24:22Z raasch
55	! unused variables removed
56	!
57	! 1065 2012-11-22 17:42:36Z hoffmann
58	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
59	!
60	! 1053 2012-11-13 17:11:03Z hoffmann
61	! allocation and initialisation of necessary data arrays for the two-moment
62	! cloud physics scheme the two new prognostic equations (nr, qr):
63	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
64	! +tend_*, prr
65	!
66	! 1036 2012-10-22 13:43:42Z raasch
67	! code put under GPL (PALM 3.9)
68	!
69	! 1032 2012-10-21 13:03:21Z letzel
70	! save memory by not allocating pt_2 in case of neutral = .T.
71	!
72	! 1025 2012-10-07 16:04:41Z letzel
73	! bugfix: swap indices of mask for ghost boundaries
74	!
75	! 1015 2012-09-27 09:23:24Z raasch
76	! mask is set to zero for ghost boundaries
77	!
78	! 1010 2012-09-20 07:59:54Z raasch
79	! cpp switch __nopointer added for pointer free version
80	!
81	! 1003 2012-09-14 14:35:53Z raasch
82	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
83	!
84	! 1001 2012-09-13 14:08:46Z raasch
85	! all actions concerning leapfrog scheme removed
86	!
87	! 996 2012-09-07 10:41:47Z raasch
88	! little reformatting
89	!
90	! 978 2012-08-09 08:28:32Z fricke
91	! outflow damping layer removed
92	! roughness length for scalar quantites z0h added
93	! damping zone for the potential temperatur in case of non-cyclic lateral
94	! boundaries added
95	! initialization of ptdf_x, ptdf_y
96	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
97	!
98	! 849 2012-03-15 10:35:09Z raasch
99	! init_particles renamed lpm_init
100	!
101	! 825 2012-02-19 03:03:44Z raasch
102	! wang_collision_kernel renamed wang_kernel
103	!
104	! 790 2011-11-29 03:11:20Z raasch
105	! diss is also allocated in case that the Wang kernel is used
106	!
107	! 787 2011-11-28 12:49:05Z heinze $
108	! bugfix: call init_advec in every case - not only for inital runs
109	!
110	! 785 2011-11-28 09:47:19Z raasch
111	! initialization of rdf_sc
112	!
113	! 767 2011-10-14 06:39:12Z raasch
114	! adjustments concerning implementation of prescribed u,v-profiles
115	! bugfix: dirichlet_0 conditions for ug/vg moved to check_parameters
116	!
117	! 759 2011-09-15 13:58:31Z raasch
118	! Splitting of parallel I/O in blocks of PEs
119	! Bugfix: No zero assignments to volume_flow_initial and volume_flow_area in
120	! case of normal restart runs.
121	!
122	! 713 2011-03-30 14:21:21Z suehring
123	! weight_substep and weight_pres are given as fractions.
124	!
125	! 709 2011-03-30 09:31:40Z raasch
126	! formatting adjustments
127	!
128	! 707 2011-03-29 11:39:40Z raasch
129	! p_sub renamed p_loc and allocated depending on the chosen pressure solver,
130	! initial assignments of zero to array p for iterative solvers only,
131	! bc_lr/ns replaced by bc_lr/ns_dirrad/raddir
132	!
133	! 680 2011-02-04 23:16:06Z gryschka
134	! bugfix: volume_flow_control
135	!
136	! 673 2011-01-18 16:19:48Z suehring
137	! weight_substep (moved from advec_ws) and weight_pres added.
138	! Allocate p_sub when using Multigrid or SOR solver.
139	! Call of ws_init moved behind the if requests.
140	!
141	! 667 2010-12-23 12:06:00Z suehring/gryschka
142	! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng in loops and
143	! allocation of arrays. Calls of exchange_horiz are modified.
144	! Call ws_init to initialize arrays needed for calculating statisticas and for
145	! optimization when ws-scheme is used.
146	! Initial volume flow is now calculated by using the variable hom_sum.
147	! Therefore the correction of initial volume flow for non-flat topography
148	! removed (removed u_nzb_p1_for_vfc and v_nzb_p1_for_vfc)
149	! Changed surface boundary conditions for u and v in case of ibc_uv_b == 0 from
150	! mirror to Dirichlet boundary conditions (u=v=0), so that k=nzb is
151	! representative for the height z0.
152	! Bugfix: type conversion of '1' to 64bit for the MAX function (ngp_3d_inner)
153	!
154	! 622 2010-12-10 08:08:13Z raasch
155	! optional barriers included in order to speed up collective operations
156	!
157	! 560 2010-09-09 10:06:09Z weinreis
158	! bugfix: correction of calculating ngp_3d for 64 bit
159	!
160	! 485 2010-02-05 10:57:51Z raasch
161	! calculation of ngp_3d + ngp_3d_inner changed because they have now 64 bit
162	!
163	! 407 2009-12-01 15:01:15Z maronga
164	! var_ts is replaced by dots_max
165	! Enabled passive scalar/humidity wall fluxes for non-flat topography
166	!
167	! 388 2009-09-23 09:40:33Z raasch
168	! Initialization of prho added.
169	! bugfix: correction of initial volume flow for non-flat topography
170	! bugfix: zero initialization of arrays within buildings for 'cyclic_fill'
171	! bugfix: avoid that ngp_2dh_s_inner becomes zero
172	! initializing_actions='read_data_for_recycling' renamed to 'cyclic_fill', now
173	! independent of turbulent_inflow
174	! Output of messages replaced by message handling routine.
175	! Set the starting level and the vertical smoothing factor used for
176	! the external pressure gradient
177	! +conserve_volume_flow_mode: 'default', 'initial_profiles', 'inflow_profile'
178	! and 'bulk_velocity'
179	! If the inversion height calculated by the prerun is zero,
180	! inflow_damping_height must be explicitly specified.
181	!
182	! 181 2008-07-30 07:07:47Z raasch
183	! bugfix: zero assignments to tendency arrays in case of restarts,
184	! further extensions and modifications in the initialisation of the plant
185	! canopy model,
186	! allocation of hom_sum moved to parin, initialization of spectrum_x\|y directly
187	! after allocating theses arrays,
188	! read data for recycling added as new initialization option,
189	! dummy allocation for diss
190	!
191	! 138 2007-11-28 10:03:58Z letzel
192	! New counter ngp_2dh_s_inner.
193	! Allow new case bc_uv_t = 'dirichlet_0' for channel flow.
194	! Corrected calculation of initial volume flow for 'set_1d-model_profiles' and
195	! 'set_constant_profiles' in case of buildings in the reference cross-sections.
196	!
197	! 108 2007-08-24 15:10:38Z letzel
198	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
199	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
200	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
201	! Rayleigh damping for ocean, optionally calculate km and kh from initial
202	! TKE e_init
203	!
204	! 97 2007-06-21 08:23:15Z raasch
205	! Initialization of salinity, call of init_ocean
206	!
207	! 87 2007-05-22 15:46:47Z raasch
208	! var_hom and var_sum renamed pr_palm
209	!
210	! 75 2007-03-22 09:54:05Z raasch
211	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
212	! bugfix for cases with the outflow damping layer extending over more than one
213	! subdomain, moisture renamed humidity,
214	! new initializing action "by_user" calls user_init_3d_model,
215	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
216	! initial velocities at nzb+1 are regarded for volume
217	! flow control in case they have been set zero before (to avoid small timesteps)
218	! -uvmean_outflow, uxrp, vynp eliminated
219	!
220	! 19 2007-02-23 04:53:48Z raasch
221	! +handling of top fluxes
222	!
223	! RCS Log replace by Id keyword, revision history cleaned up
224	!
225	! Revision 1.49 2006/08/22 15:59:07 raasch
226	! No optimization of this file on the ibmy (Yonsei Univ.)
227	!
228	! Revision 1.1 1998/03/09 16:22:22 raasch
229	! Initial revision
230	!
231	!
232	! Description:
233	! ------------
234	! Allocation of arrays and initialization of the 3D model via
235	! a) pre-run the 1D model
236	! or
237	! b) pre-set constant linear profiles
238	! or
239	! c) read values of a previous run
240	!------------------------------------------------------------------------------!
241
242	USE advec_ws
243	USE arrays_3d
244	USE averaging
245	USE cloud_parameters
246	USE constants
247	USE control_parameters
248	USE cpulog
249	USE grid_variables
250	USE indices
251	USE interfaces
252	USE model_1d
253	USE netcdf_control
254	USE particle_attributes
255	USE pegrid
256	USE profil_parameter
257	USE random_function_mod
258	USE statistics
259	USE transpose_indices
260
261	IMPLICIT NONE
262
263	INTEGER :: i, ind_array(1), j, k, sr
264
265	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l
266
267	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l, &
268	ngp_2dh_s_inner_l
269
270	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
271
272	REAL, DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l, ngp_3d_inner_tmp
273
274
275	!
276	!-- Allocate arrays
277	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
278	ngp_3d(0:statistic_regions), &
279	ngp_3d_inner(0:statistic_regions), &
280	ngp_3d_inner_l(0:statistic_regions), &
281	ngp_3d_inner_tmp(0:statistic_regions), &
282	sums_divnew_l(0:statistic_regions), &
283	sums_divold_l(0:statistic_regions) )
284	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt), &
285	ref_state(nzb:nzt+1) )
286	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
287	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
288	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
289	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
290	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
291	sums(nzb:nzt+1,pr_palm+max_pr_user), &
292	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
293	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
294	sums_up_fraction_l(10,3,0:statistic_regions), &
295	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
296	ts_value(dots_max,0:statistic_regions) )
297	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
298
299	ALLOCATE( rif(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
300	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
301	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
302	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
303	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
304	z0h(nysg:nyng,nxlg:nxrg) )
305
306	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
307	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
308	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
309	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
310	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
311
312	#if defined( __nopointer )
313	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
314	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
315	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
316	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
317	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
318	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
319	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
320	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
321	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
322	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
323	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
324	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
325	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
326	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
327	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
328	#else
329	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
330	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
331	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
332	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
333	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
334	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
335	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
336	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
337	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
338	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
339	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
340	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
341	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
342	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
343	IF ( .NOT. neutral ) THEN
344	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
345	ENDIF
346	#endif
347
348	!
349	!-- Following array is required for perturbation pressure within the iterative
350	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
351	!-- the weighted average of the substeps and cannot be used in the Poisson
352	!-- solver.
353	IF ( psolver == 'sor' ) THEN
354	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
355	ELSEIF ( psolver == 'multigrid' ) THEN
356	!
357	!-- For performance reasons, multigrid is using one ghost layer only
358	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
359	ENDIF
360
361	!
362	!-- Array for storing constant coeffficients of the tridiagonal solver
363	IF ( psolver == 'poisfft' ) THEN
364	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
365	ENDIF
366
367	IF ( humidity .OR. passive_scalar ) THEN
368	!
369	!-- 2D-humidity/scalar arrays
370	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
371	qsws(nysg:nyng,nxlg:nxrg), &
372	qswst(nysg:nyng,nxlg:nxrg) )
373
374	!
375	!-- 3D-humidity/scalar arrays
376	#if defined( __nopointer )
377	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
378	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
379	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
380	#else
381	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
382	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
383	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
384	#endif
385
386	!
387	!-- 3D-arrays needed for humidity only
388	IF ( humidity ) THEN
389	#if defined( __nopointer )
390	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
391	#else
392	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
393	#endif
394
395	IF ( cloud_physics ) THEN
396
397	!
398	!-- Liquid water content
399	#if defined( __nopointer )
400	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
401	#else
402	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
403	#endif
404	!
405	!-- Precipitation amount and rate (only needed if output is switched)
406	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
407	precipitation_rate(nysg:nyng,nxlg:nxrg) )
408
409	IF ( icloud_scheme == 0 ) THEN
410	!
411	!-- 1D-arrays
412	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
413	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
414	!
415	!-- 3D-cloud water content
416	#if defined( __nopointer )
417	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
418	#else
419	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
420	#endif
421	!
422	!-- 3D-tendency arrays
423	ALLOCATE( tend_pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
424	tend_q(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
425
426	IF ( precipitation ) THEN
427	!
428	!-- 1D-arrays
429	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
430	!
431	!
432	!-- 3D-tendency arrays
433	ALLOCATE( tend_nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
434	tend_qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
435	!
436	!-- 2D-rain water content and rain drop concentration arrays
437	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
438	qrsws(nysg:nyng,nxlg:nxrg), &
439	qrswst(nysg:nyng,nxlg:nxrg), &
440	nrs(nysg:nyng,nxlg:nxrg), &
441	nrsws(nysg:nyng,nxlg:nxrg), &
442	nrswst(nysg:nyng,nxlg:nxrg) )
443	!
444	!-- 3D-rain water content, rain drop concentration arrays
445	#if defined( __nopointer )
446	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
447	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
448	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
449	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
450	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
451	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
452	#else
453	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
454	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
455	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
456	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
457	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
458	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
459	#endif
460	!
461	!-- 3d-precipitation rate
462	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
463	ENDIF
464
465	ENDIF
466	ENDIF
467
468	IF ( cloud_droplets ) THEN
469	!
470	!-- Liquid water content, change in liquid water content
471	#if defined( __nopointer )
472	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
473	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
474	#else
475	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
476	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
477	#endif
478	!
479	!-- Real volume of particles (with weighting), volume of particles
480	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
481	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
482	ENDIF
483
484	ENDIF
485
486	ENDIF
487
488	IF ( ocean ) THEN
489	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
490	saswst(nysg:nyng,nxlg:nxrg) )
491	#if defined( __nopointer )
492	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
493	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
494	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
495	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
496	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
497	#else
498	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
499	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
500	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
501	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
502	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
503	prho => prho_1
504	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
505	! density to be apointer
506	#endif
507	IF ( humidity_remote ) THEN
508	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
509	qswst_remote = 0.0
510	ENDIF
511	ENDIF
512
513	!
514	!-- 3D-array for storing the dissipation, needed for calculating the sgs
515	!-- particle velocities
516	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence .OR. &
517	num_acc_per_node > 0 ) THEN
518	print, '** allocating diss'
519	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
520	ENDIF
521
522	IF ( dt_dosp /= 9999999.9 ) THEN
523	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
524	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
525	spectrum_x = 0.0
526	spectrum_y = 0.0
527	ENDIF
528
529	!
530	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
531	IF ( plant_canopy ) THEN
532	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
533	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
534	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
535	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
536	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
537
538	IF ( passive_scalar ) THEN
539	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
540	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
541	ENDIF
542
543	IF ( cthf /= 0.0 ) THEN
544	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
545	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
546	ENDIF
547
548	ENDIF
549
550	!
551	!-- 4D-array for storing the Rif-values at vertical walls
552	IF ( topography /= 'flat' ) THEN
553	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
554	rif_wall = 0.0
555	ENDIF
556
557	!
558	!-- Arrays to store velocity data from t-dt and the phase speeds which
559	!-- are needed for radiation boundary conditions
560	IF ( outflow_l ) THEN
561	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
562	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
563	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
564	ENDIF
565	IF ( outflow_r ) THEN
566	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
567	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
568	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
569	ENDIF
570	IF ( outflow_l .OR. outflow_r ) THEN
571	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
572	c_w(nzb:nzt+1,nysg:nyng) )
573	ENDIF
574	IF ( outflow_s ) THEN
575	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
576	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
577	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
578	ENDIF
579	IF ( outflow_n ) THEN
580	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
581	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
582	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
583	ENDIF
584	IF ( outflow_s .OR. outflow_n ) THEN
585	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
586	c_w(nzb:nzt+1,nxlg:nxrg) )
587	ENDIF
588	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
589	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
590	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
591	ENDIF
592
593
594	#if ! defined( __nopointer )
595	!
596	!-- Initial assignment of the pointers
597	e => e_1; e_p => e_2; te_m => e_3
598	IF ( .NOT. neutral ) THEN
599	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
600	ELSE
601	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
602	ENDIF
603	u => u_1; u_p => u_2; tu_m => u_3
604	v => v_1; v_p => v_2; tv_m => v_3
605	w => w_1; w_p => w_2; tw_m => w_3
606
607	IF ( humidity .OR. passive_scalar ) THEN
608	q => q_1; q_p => q_2; tq_m => q_3
609	IF ( humidity ) THEN
610	vpt => vpt_1
611	IF ( cloud_physics ) THEN
612	ql => ql_1
613	IF ( icloud_scheme == 0 ) THEN
614	qc => qc_1
615	IF ( precipitation ) THEN
616	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
617	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
618	ENDIF
619	ENDIF
620	ENDIF
621	ENDIF
622	IF ( cloud_droplets ) THEN
623	ql => ql_1
624	ql_c => ql_2
625	ENDIF
626	ENDIF
627
628	IF ( ocean ) THEN
629	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
630	ENDIF
631	#endif
632
633	!
634	!-- Allocate arrays containing the RK coefficient for calculation of
635	!-- perturbation pressure and turbulent fluxes. At this point values are
636	!-- set for pressure calculation during initialization (where no timestep
637	!-- is done). Further below the values needed within the timestep scheme
638	!-- will be set.
639	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
640	weight_pres(1:intermediate_timestep_count_max) )
641	weight_substep = 1.0
642	weight_pres = 1.0
643	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
644
645	!
646	!-- Initialize model variables
647	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
648	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
649	!
650	!-- First model run of a possible job queue.
651	!-- Initial profiles of the variables must be computes.
652	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
653	!
654	!-- Use solutions of the 1D model as initial profiles,
655	!-- start 1D model
656	CALL init_1d_model
657	!
658	!-- Transfer initial profiles to the arrays of the 3D model
659	DO i = nxlg, nxrg
660	DO j = nysg, nyng
661	e(:,j,i) = e1d
662	kh(:,j,i) = kh1d
663	km(:,j,i) = km1d
664	pt(:,j,i) = pt_init
665	u(:,j,i) = u1d
666	v(:,j,i) = v1d
667	ENDDO
668	ENDDO
669
670	IF ( humidity .OR. passive_scalar ) THEN
671	DO i = nxlg, nxrg
672	DO j = nysg, nyng
673	q(:,j,i) = q_init
674	ENDDO
675	ENDDO
676	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
677	precipitation ) THEN
678	DO i = nxlg, nxrg
679	DO j = nysg, nyng
680	qr(:,j,i) = 0.0
681	nr(:,j,i) = 0.0
682	ENDDO
683	ENDDO
684	!
685	!-- Initialze nc_1d with default value
686	nc_1d(:) = nc_const
687
688	ENDIF
689	ENDIF
690
691	IF ( .NOT. constant_diffusion ) THEN
692	DO i = nxlg, nxrg
693	DO j = nysg, nyng
694	e(:,j,i) = e1d
695	ENDDO
696	ENDDO
697	!
698	!-- Store initial profiles for output purposes etc.
699	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
700
701	IF ( prandtl_layer ) THEN
702	rif = rif1d(nzb+1)
703	ts = 0.0 ! could actually be computed more accurately in the
704	! 1D model. Update when opportunity arises.
705	us = us1d
706	usws = usws1d
707	vsws = vsws1d
708	ELSE
709	ts = 0.0 ! must be set, because used in
710	rif = 0.0 ! flowste
711	us = 0.0
712	usws = 0.0
713	vsws = 0.0
714	ENDIF
715
716	ELSE
717	e = 0.0 ! must be set, because used in
718	rif = 0.0 ! flowste
719	ts = 0.0
720	us = 0.0
721	usws = 0.0
722	vsws = 0.0
723	ENDIF
724	uswst = top_momentumflux_u
725	vswst = top_momentumflux_v
726
727	!
728	!-- In every case qs = 0.0 (see also pt)
729	!-- This could actually be computed more accurately in the 1D model.
730	!-- Update when opportunity arises!
731	IF ( humidity .OR. passive_scalar ) THEN
732	qs = 0.0
733	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
734	precipitation ) THEN
735	qrs = 0.0
736	nrs = 0.0
737	ENDIF
738	ENDIF
739
740	!
741	!-- inside buildings set velocities back to zero
742	IF ( topography /= 'flat' ) THEN
743	DO i = nxl-1, nxr+1
744	DO j = nys-1, nyn+1
745	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
746	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
747	ENDDO
748	ENDDO
749
750	!
751	!-- WARNING: The extra boundary conditions set after running the
752	!-- ------- 1D model impose an error on the divergence one layer
753	!-- below the topography; need to correct later
754	!-- ATTENTION: Provisional correction for Piacsek & Williams
755	!-- --------- advection scheme: keep u and v zero one layer below
756	!-- the topography.
757	IF ( ibc_uv_b == 1 ) THEN
758	!
759	!-- Neumann condition
760	DO i = nxl-1, nxr+1
761	DO j = nys-1, nyn+1
762	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
763	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
764	ENDDO
765	ENDDO
766
767	ENDIF
768
769	ENDIF
770
771	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
772	THEN
773	!
774	!-- Use constructed initial profiles (velocity constant with height,
775	!-- temperature profile with constant gradient)
776	DO i = nxlg, nxrg
777	DO j = nysg, nyng
778	pt(:,j,i) = pt_init
779	u(:,j,i) = u_init
780	v(:,j,i) = v_init
781	ENDDO
782	ENDDO
783
784	!
785	!-- Set initial horizontal velocities at the lowest computational grid
786	!-- levels to zero in order to avoid too small time steps caused by the
787	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
788	!-- in the limiting formula!). The original values are stored to be later
789	!-- used for volume flow control.
790	DO i = nxlg, nxrg
791	DO j = nysg, nyng
792	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
793	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
794	ENDDO
795	ENDDO
796
797	IF ( humidity .OR. passive_scalar ) THEN
798	DO i = nxlg, nxrg
799	DO j = nysg, nyng
800	q(:,j,i) = q_init
801	ENDDO
802	ENDDO
803	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
804	!
805	!-- Initialze nc_1d with default value
806	nc_1d(:) = nc_const
807
808	IF ( precipitation ) THEN
809	DO i = nxlg, nxrg
810	DO j = nysg, nyng
811	qr(:,j,i) = 0.0
812	nr(:,j,i) = 0.0
813	ENDDO
814	ENDDO
815	ENDIF
816
817	ENDIF
818	ENDIF
819
820	IF ( ocean ) THEN
821	DO i = nxlg, nxrg
822	DO j = nysg, nyng
823	sa(:,j,i) = sa_init
824	ENDDO
825	ENDDO
826	ENDIF
827
828	IF ( constant_diffusion ) THEN
829	km = km_constant
830	kh = km / prandtl_number
831	e = 0.0
832	ELSEIF ( e_init > 0.0 ) THEN
833	DO k = nzb+1, nzt
834	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
835	ENDDO
836	km(nzb,:,:) = km(nzb+1,:,:)
837	km(nzt+1,:,:) = km(nzt,:,:)
838	kh = km / prandtl_number
839	e = e_init
840	ELSE
841	IF ( .NOT. ocean ) THEN
842	kh = 0.01 ! there must exist an initial diffusion, because
843	km = 0.01 ! otherwise no TKE would be produced by the
844	! production terms, as long as not yet
845	! e = (u/cm)*2 at k=nzb+1
846	ELSE
847	kh = 0.00001
848	km = 0.00001
849	ENDIF
850	e = 0.0
851	ENDIF
852	rif = 0.0
853	ts = 0.0
854	us = 0.0
855	usws = 0.0
856	uswst = top_momentumflux_u
857	vsws = 0.0
858	vswst = top_momentumflux_v
859	IF ( humidity .OR. passive_scalar ) qs = 0.0
860
861	!
862	!-- Compute initial temperature field and other constants used in case
863	!-- of a sloping surface
864	IF ( sloping_surface ) CALL init_slope
865
866	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
867	THEN
868	!
869	!-- Initialization will completely be done by the user
870	CALL user_init_3d_model
871
872	ENDIF
873	!
874	!-- Bottom boundary
875	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
876	u(nzb,:,:) = 0.0
877	v(nzb,:,:) = 0.0
878	ENDIF
879
880	!
881	!-- Apply channel flow boundary condition
882	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
883	u(nzt+1,:,:) = 0.0
884	v(nzt+1,:,:) = 0.0
885	ENDIF
886
887	!
888	!-- Calculate virtual potential temperature
889	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
890
891	!
892	!-- Store initial profiles for output purposes etc.
893	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
894	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
895	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
896	hom(nzb,1,5,:) = 0.0
897	hom(nzb,1,6,:) = 0.0
898	ENDIF
899	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
900	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
901	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
902
903	IF ( ocean ) THEN
904	!
905	!-- Store initial salinity profile
906	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
907	ENDIF
908
909	IF ( humidity ) THEN
910	!
911	!-- Store initial profile of total water content, virtual potential
912	!-- temperature
913	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
914	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
915	IF ( cloud_physics .OR. cloud_droplets ) THEN
916	!
917	!-- Store initial profile of specific humidity and potential
918	!-- temperature
919	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
920	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
921	ENDIF
922	ENDIF
923
924	IF ( passive_scalar ) THEN
925	!
926	!-- Store initial scalar profile
927	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
928	ENDIF
929
930	!
931	!-- Initialize fluxes at bottom surface
932	IF ( use_surface_fluxes ) THEN
933
934	IF ( constant_heatflux ) THEN
935	!
936	!-- Heat flux is prescribed
937	IF ( random_heatflux ) THEN
938	CALL disturb_heatflux
939	ELSE
940	shf = surface_heatflux
941	!
942	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
943	IF ( TRIM( topography ) /= 'flat' ) THEN
944	DO i = nxlg, nxrg
945	DO j = nysg, nyng
946	IF ( nzb_s_inner(j,i) /= 0 ) THEN
947	shf(j,i) = wall_heatflux(0)
948	ENDIF
949	ENDDO
950	ENDDO
951	ENDIF
952	ENDIF
953	ENDIF
954
955	!
956	!-- Determine the near-surface water flux
957	IF ( humidity .OR. passive_scalar ) THEN
958	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
959	precipitation ) THEN
960	qrsws = 0.0
961	nrsws = 0.0
962	ENDIF
963	IF ( constant_waterflux ) THEN
964	qsws = surface_waterflux
965	!
966	!-- Over topography surface_waterflux is replaced by
967	!-- wall_humidityflux(0)
968	IF ( TRIM( topography ) /= 'flat' ) THEN
969	wall_qflux = wall_humidityflux
970	DO i = nxlg, nxrg
971	DO j = nysg, nyng
972	IF ( nzb_s_inner(j,i) /= 0 ) THEN
973	qsws(j,i) = wall_qflux(0)
974	ENDIF
975	ENDDO
976	ENDDO
977	ENDIF
978	ENDIF
979	ENDIF
980
981	ENDIF
982
983	!
984	!-- Initialize fluxes at top surface
985	!-- Currently, only the heatflux and salinity flux can be prescribed.
986	!-- The latent flux is zero in this case!
987	IF ( use_top_fluxes ) THEN
988
989	IF ( constant_top_heatflux ) THEN
990	!
991	!-- Heat flux is prescribed
992	tswst = top_heatflux
993
994	IF ( humidity .OR. passive_scalar ) THEN
995	qswst = 0.0
996	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
997	precipitation ) THEN
998	nrswst = 0.0
999	qrswst = 0.0
1000	ENDIF
1001	ENDIF
1002
1003	IF ( ocean ) THEN
1004	saswsb = bottom_salinityflux
1005	saswst = top_salinityflux
1006	ENDIF
1007	ENDIF
1008
1009	!
1010	!-- Initialization in case of a coupled model run
1011	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1012	tswst = 0.0
1013	ENDIF
1014
1015	ENDIF
1016
1017	!
1018	!-- Initialize Prandtl layer quantities
1019	IF ( prandtl_layer ) THEN
1020
1021	z0 = roughness_length
1022	z0h = z0h_factor * z0
1023
1024	IF ( .NOT. constant_heatflux ) THEN
1025	!
1026	!-- Surface temperature is prescribed. Here the heat flux cannot be
1027	!-- simply estimated, because therefore rif, u* and theta* would have
1028	!-- to be computed by iteration. This is why the heat flux is assumed
1029	!-- to be zero before the first time step. It approaches its correct
1030	!-- value in the course of the first few time steps.
1031	shf = 0.0
1032	ENDIF
1033
1034	IF ( humidity .OR. passive_scalar ) THEN
1035	IF ( .NOT. constant_waterflux ) qsws = 0.0
1036	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1037	precipitation ) THEN
1038	qrsws = 0.0
1039	nrsws = 0.0
1040	ENDIF
1041	ENDIF
1042
1043	ENDIF
1044
1045	!
1046	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1047	!-- the reference state will be set (overwritten) in init_ocean)
1048	IF ( use_single_reference_value ) THEN
1049	IF ( .NOT. humidity ) THEN
1050	ref_state(:) = pt_reference
1051	ELSE
1052	ref_state(:) = vpt_reference
1053	ENDIF
1054	ELSE
1055	IF ( .NOT. humidity ) THEN
1056	ref_state(:) = pt_init(:)
1057	ELSE
1058	ref_state(:) = vpt(:,nys,nxl)
1059	ENDIF
1060	ENDIF
1061
1062	!
1063	!-- For the moment, vertical velocity is zero
1064	w = 0.0
1065
1066	!
1067	!-- Initialize array sums (must be defined in first call of pres)
1068	sums = 0.0
1069
1070	!
1071	!-- In case of iterative solvers, p must get an initial value
1072	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0
1073
1074	!
1075	!-- Treating cloud physics, liquid water content and precipitation amount
1076	!-- are zero at beginning of the simulation
1077	IF ( cloud_physics ) THEN
1078	ql = 0.0
1079	IF ( precipitation ) precipitation_amount = 0.0
1080	IF ( icloud_scheme == 0 ) THEN
1081	qc = 0.0
1082	nc_1d = nc_const
1083	ENDIF
1084	ENDIF
1085	!
1086	!-- Impose vortex with vertical axis on the initial velocity profile
1087	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1088	CALL init_rankine
1089	ENDIF
1090
1091	!
1092	!-- Impose temperature anomaly (advection test only)
1093	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1094	CALL init_pt_anomaly
1095	ENDIF
1096
1097	!
1098	!-- If required, change the surface temperature at the start of the 3D run
1099	IF ( pt_surface_initial_change /= 0.0 ) THEN
1100	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1101	ENDIF
1102
1103	!
1104	!-- If required, change the surface humidity/scalar at the start of the 3D
1105	!-- run
1106	IF ( ( humidity .OR. passive_scalar ) .AND. &
1107	q_surface_initial_change /= 0.0 ) THEN
1108	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1109	ENDIF
1110	!
1111	!-- Initialize the random number generator (from numerical recipes)
1112	CALL random_function_ini
1113
1114	!
1115	!-- Initialize old and new time levels.
1116	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1117	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1118
1119	IF ( humidity .OR. passive_scalar ) THEN
1120	tq_m = 0.0
1121	q_p = q
1122	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1123	precipitation ) THEN
1124	tqr_m = 0.0
1125	qr_p = qr
1126	tnr_m = 0.0
1127	nr_p = nr
1128	ENDIF
1129	ENDIF
1130
1131	IF ( ocean ) THEN
1132	tsa_m = 0.0
1133	sa_p = sa
1134	ENDIF
1135
1136
1137	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1138	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1139	THEN
1140	!
1141	!-- When reading data for cyclic fill of 3D prerun data files, read
1142	!-- some of the global variables from the restart file which are required
1143	!-- for initializing the inflow
1144	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1145
1146	DO i = 0, io_blocks-1
1147	IF ( i == io_group ) THEN
1148	CALL read_parts_of_var_list
1149	CALL close_file( 13 )
1150	ENDIF
1151	#if defined( __parallel )
1152	CALL MPI_BARRIER( comm2d, ierr )
1153	#endif
1154	ENDDO
1155
1156	ENDIF
1157
1158	!
1159	!-- Read binary data from restart file
1160	DO i = 0, io_blocks-1
1161	IF ( i == io_group ) THEN
1162	CALL read_3d_binary
1163	ENDIF
1164	#if defined( __parallel )
1165	CALL MPI_BARRIER( comm2d, ierr )
1166	#endif
1167	ENDDO
1168
1169	!
1170	!-- Initialization of the turbulence recycling method
1171	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1172	turbulent_inflow ) THEN
1173	!
1174	!-- First store the profiles to be used at the inflow.
1175	!-- These profiles are the (temporally) and horizontally averaged vertical
1176	!-- profiles from the prerun. Alternatively, prescribed profiles
1177	!-- for u,v-components can be used.
1178	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
1179
1180	IF ( use_prescribed_profile_data ) THEN
1181	mean_inflow_profiles(:,1) = u_init ! u
1182	mean_inflow_profiles(:,2) = v_init ! v
1183	ELSE
1184	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1185	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1186	ENDIF
1187	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1188	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1189
1190	!
1191	!-- If necessary, adjust the horizontal flow field to the prescribed
1192	!-- profiles
1193	IF ( use_prescribed_profile_data ) THEN
1194	DO i = nxlg, nxrg
1195	DO j = nysg, nyng
1196	DO k = nzb, nzt+1
1197	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1198	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1199	ENDDO
1200	ENDDO
1201	ENDDO
1202	ENDIF
1203
1204	!
1205	!-- Use these mean profiles at the inflow (provided that Dirichlet
1206	!-- conditions are used)
1207	IF ( inflow_l ) THEN
1208	DO j = nysg, nyng
1209	DO k = nzb, nzt+1
1210	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1211	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1212	w(k,j,nxlg:-1) = 0.0
1213	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1214	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1215	ENDDO
1216	ENDDO
1217	ENDIF
1218
1219	!
1220	!-- Calculate the damping factors to be used at the inflow. For a
1221	!-- turbulent inflow the turbulent fluctuations have to be limited
1222	!-- vertically because otherwise the turbulent inflow layer will grow
1223	!-- in time.
1224	IF ( inflow_damping_height == 9999999.9 ) THEN
1225	!
1226	!-- Default: use the inversion height calculated by the prerun; if
1227	!-- this is zero, inflow_damping_height must be explicitly
1228	!-- specified.
1229	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0 ) THEN
1230	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1231	ELSE
1232	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1233	'explicitly specified because&the inversion height ', &
1234	'calculated by the prerun is zero.'
1235	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1236	ENDIF
1237
1238	ENDIF
1239
1240	IF ( inflow_damping_width == 9999999.9 ) THEN
1241	!
1242	!-- Default for the transition range: one tenth of the undamped
1243	!-- layer
1244	inflow_damping_width = 0.1 * inflow_damping_height
1245
1246	ENDIF
1247
1248	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1249
1250	DO k = nzb, nzt+1
1251
1252	IF ( zu(k) <= inflow_damping_height ) THEN
1253	inflow_damping_factor(k) = 1.0
1254	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1255	inflow_damping_factor(k) = 1.0 - &
1256	( zu(k) - inflow_damping_height ) / &
1257	inflow_damping_width
1258	ELSE
1259	inflow_damping_factor(k) = 0.0
1260	ENDIF
1261
1262	ENDDO
1263
1264	ENDIF
1265
1266	!
1267	!-- Inside buildings set velocities and TKE back to zero
1268	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1269	topography /= 'flat' ) THEN
1270	!
1271	!-- Inside buildings set velocities and TKE back to zero.
1272	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1273	!-- maybe revise later.
1274	DO i = nxlg, nxrg
1275	DO j = nysg, nyng
1276	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1277	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1278	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1279	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1280	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1281	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1282	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1283	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1284	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1285	ENDDO
1286	ENDDO
1287
1288	ENDIF
1289
1290	!
1291	!-- Calculate initial temperature field and other constants used in case
1292	!-- of a sloping surface
1293	IF ( sloping_surface ) CALL init_slope
1294
1295	!
1296	!-- Initialize new time levels (only done in order to set boundary values
1297	!-- including ghost points)
1298	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1299	IF ( humidity .OR. passive_scalar ) THEN
1300	q_p = q
1301	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1302	precipitation ) THEN
1303	qr_p = qr
1304	nr_p = nr
1305	ENDIF
1306	ENDIF
1307	IF ( ocean ) sa_p = sa
1308
1309	!
1310	!-- Allthough tendency arrays are set in prognostic_equations, they have
1311	!-- have to be predefined here because they are used (but multiplied with 0)
1312	!-- there before they are set.
1313	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1314	IF ( humidity .OR. passive_scalar ) THEN
1315	tq_m = 0.0
1316	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1317	precipitation ) THEN
1318	tqr_m = 0.0
1319	tnr_m = 0.0
1320	ENDIF
1321	ENDIF
1322	IF ( ocean ) tsa_m = 0.0
1323
1324	ELSE
1325	!
1326	!-- Actually this part of the programm should not be reached
1327	message_string = 'unknown initializing problem'
1328	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1329	ENDIF
1330
1331
1332	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1333	!
1334	!-- Initialize old timelevels needed for radiation boundary conditions
1335	IF ( outflow_l ) THEN
1336	u_m_l(:,:,:) = u(:,:,1:2)
1337	v_m_l(:,:,:) = v(:,:,0:1)
1338	w_m_l(:,:,:) = w(:,:,0:1)
1339	ENDIF
1340	IF ( outflow_r ) THEN
1341	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1342	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1343	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1344	ENDIF
1345	IF ( outflow_s ) THEN
1346	u_m_s(:,:,:) = u(:,0:1,:)
1347	v_m_s(:,:,:) = v(:,1:2,:)
1348	w_m_s(:,:,:) = w(:,0:1,:)
1349	ENDIF
1350	IF ( outflow_n ) THEN
1351	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1352	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1353	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1354	ENDIF
1355
1356	ENDIF
1357
1358	!
1359	!-- Calculate the initial volume flow at the right and north boundary
1360	IF ( conserve_volume_flow ) THEN
1361
1362	IF ( use_prescribed_profile_data ) THEN
1363
1364	volume_flow_initial_l = 0.0
1365	volume_flow_area_l = 0.0
1366
1367	IF ( nxr == nx ) THEN
1368	DO j = nys, nyn
1369	DO k = nzb_2d(j,nx)+1, nzt
1370	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1371	u_init(k) * dzw(k)
1372	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1373	ENDDO
1374	ENDDO
1375	ENDIF
1376
1377	IF ( nyn == ny ) THEN
1378	DO i = nxl, nxr
1379	DO k = nzb_2d(ny,i)+1, nzt
1380	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1381	v_init(k) * dzw(k)
1382	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1383	ENDDO
1384	ENDDO
1385	ENDIF
1386
1387	#if defined( __parallel )
1388	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1389	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1390	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1391	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1392
1393	#else
1394	volume_flow_initial = volume_flow_initial_l
1395	volume_flow_area = volume_flow_area_l
1396	#endif
1397
1398	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1399
1400	volume_flow_initial_l = 0.0
1401	volume_flow_area_l = 0.0
1402
1403	IF ( nxr == nx ) THEN
1404	DO j = nys, nyn
1405	DO k = nzb_2d(j,nx)+1, nzt
1406	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1407	hom_sum(k,1,0) * dzw(k)
1408	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1409	ENDDO
1410	ENDDO
1411	ENDIF
1412
1413	IF ( nyn == ny ) THEN
1414	DO i = nxl, nxr
1415	DO k = nzb_2d(ny,i)+1, nzt
1416	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1417	hom_sum(k,2,0) * dzw(k)
1418	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1419	ENDDO
1420	ENDDO
1421	ENDIF
1422
1423	#if defined( __parallel )
1424	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1425	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1426	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1427	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1428
1429	#else
1430	volume_flow_initial = volume_flow_initial_l
1431	volume_flow_area = volume_flow_area_l
1432	#endif
1433
1434	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1435
1436	volume_flow_initial_l = 0.0
1437	volume_flow_area_l = 0.0
1438
1439	IF ( nxr == nx ) THEN
1440	DO j = nys, nyn
1441	DO k = nzb_2d(j,nx)+1, nzt
1442	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1443	u(k,j,nx) * dzw(k)
1444	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1445	ENDDO
1446	ENDDO
1447	ENDIF
1448
1449	IF ( nyn == ny ) THEN
1450	DO i = nxl, nxr
1451	DO k = nzb_2d(ny,i)+1, nzt
1452	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1453	v(k,ny,i) * dzw(k)
1454	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1455	ENDDO
1456	ENDDO
1457	ENDIF
1458
1459	#if defined( __parallel )
1460	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1461	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1462	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1463	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1464
1465	#else
1466	volume_flow_initial = volume_flow_initial_l
1467	volume_flow_area = volume_flow_area_l
1468	#endif
1469
1470	ENDIF
1471
1472	!
1473	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1474	!-- from u\|v_bulk instead
1475	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1476	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1477	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1478	ENDIF
1479
1480	ENDIF
1481
1482	!
1483	!-- Initialize quantities for special advections schemes
1484	CALL init_advec
1485
1486	!
1487	!-- Impose random perturbation on the horizontal velocity field and then
1488	!-- remove the divergences from the velocity field at the initial stage
1489	IF ( create_disturbances .AND. &
1490	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1491	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1492
1493	CALL disturb_field( nzb_u_inner, tend, u )
1494	CALL disturb_field( nzb_v_inner, tend, v )
1495	n_sor = nsor_ini
1496	!$acc data copy( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner, nzb_v_inner, nzb_w_inner, p, tric, u, v, w, weight_pres, weight_substep, tend )
1497	CALL pres
1498	!$acc end data
1499	n_sor = nsor
1500	ENDIF
1501
1502	!
1503	!-- Initialization of the leaf area density
1504	IF ( plant_canopy ) THEN
1505
1506	SELECT CASE ( TRIM( canopy_mode ) )
1507
1508	CASE( 'block' )
1509
1510	DO i = nxlg, nxrg
1511	DO j = nysg, nyng
1512	lad_s(:,j,i) = lad(:)
1513	cdc(:,j,i) = drag_coefficient
1514	IF ( passive_scalar ) THEN
1515	sls(:,j,i) = leaf_surface_concentration
1516	sec(:,j,i) = scalar_exchange_coefficient
1517	ENDIF
1518	ENDDO
1519	ENDDO
1520
1521	CASE DEFAULT
1522
1523	!
1524	!-- The DEFAULT case is reached either if the parameter
1525	!-- canopy mode contains a wrong character string or if the
1526	!-- user has coded a special case in the user interface.
1527	!-- There, the subroutine user_init_plant_canopy checks
1528	!-- which of these two conditions applies.
1529	CALL user_init_plant_canopy
1530
1531	END SELECT
1532
1533	CALL exchange_horiz( lad_s, nbgp )
1534	CALL exchange_horiz( cdc, nbgp )
1535
1536	IF ( passive_scalar ) THEN
1537	CALL exchange_horiz( sls, nbgp )
1538	CALL exchange_horiz( sec, nbgp )
1539	ENDIF
1540
1541	!
1542	!-- Sharp boundaries of the plant canopy in horizontal directions
1543	!-- In vertical direction the interpolation is retained, as the leaf
1544	!-- area density is initialised by prescribing a vertical profile
1545	!-- consisting of piecewise linear segments. The upper boundary
1546	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1547
1548	DO i = nxl, nxr
1549	DO j = nys, nyn
1550	DO k = nzb, nzt+1
1551	IF ( lad_s(k,j,i) > 0.0 ) THEN
1552	lad_u(k,j,i) = lad_s(k,j,i)
1553	lad_u(k,j,i+1) = lad_s(k,j,i)
1554	lad_v(k,j,i) = lad_s(k,j,i)
1555	lad_v(k,j+1,i) = lad_s(k,j,i)
1556	ENDIF
1557	ENDDO
1558	DO k = nzb, nzt
1559	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1560	ENDDO
1561	ENDDO
1562	ENDDO
1563
1564	lad_w(pch_index,:,:) = 0.0
1565	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1566
1567	CALL exchange_horiz( lad_u, nbgp )
1568	CALL exchange_horiz( lad_v, nbgp )
1569	CALL exchange_horiz( lad_w, nbgp )
1570
1571	!
1572	!-- Initialisation of the canopy heat source distribution
1573	IF ( cthf /= 0.0 ) THEN
1574	!
1575	!-- Piecewise evaluation of the leaf area index by
1576	!-- integration of the leaf area density
1577	lai(:,:,:) = 0.0
1578	DO i = nxlg, nxrg
1579	DO j = nysg, nyng
1580	DO k = pch_index-1, 0, -1
1581	lai(k,j,i) = lai(k+1,j,i) + &
1582	( 0.5 * ( lad_w(k+1,j,i) + &
1583	lad_s(k+1,j,i) ) * &
1584	( zw(k+1) - zu(k+1) ) ) + &
1585	( 0.5 * ( lad_w(k,j,i) + &
1586	lad_s(k+1,j,i) ) * &
1587	( zu(k+1) - zw(k) ) )
1588	ENDDO
1589	ENDDO
1590	ENDDO
1591
1592	!
1593	!-- Evaluation of the upward kinematic vertical heat flux within the
1594	!-- canopy
1595	DO i = nxlg, nxrg
1596	DO j = nysg, nyng
1597	DO k = 0, pch_index
1598	canopy_heat_flux(k,j,i) = cthf * &
1599	exp( -0.6 * lai(k,j,i) )
1600	ENDDO
1601	ENDDO
1602	ENDDO
1603
1604	!
1605	!-- The near surface heat flux is derived from the heat flux
1606	!-- distribution within the canopy
1607	shf(:,:) = canopy_heat_flux(0,:,:)
1608
1609	ENDIF
1610
1611	ENDIF
1612
1613	!
1614	!-- If required, initialize dvrp-software
1615	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
1616
1617	IF ( ocean ) THEN
1618	!
1619	!-- Initialize quantities needed for the ocean model
1620	CALL init_ocean
1621
1622	ELSE
1623	!
1624	!-- Initialize quantities for handling cloud physics
1625	!-- This routine must be called before lpm_init, because
1626	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1627	!-- lpm_init) is not defined.
1628	CALL init_cloud_physics
1629	ENDIF
1630
1631	!
1632	!-- If required, initialize particles
1633	IF ( particle_advection ) CALL lpm_init
1634
1635	!
1636	!-- Initialize the ws-scheme.
1637	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1638
1639	!
1640	!-- Setting weighting factors for calculation of perturbation pressure
1641	!-- and turbulent quantities from the RK substeps
1642	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1643
1644	weight_substep(1) = 1./6.
1645	weight_substep(2) = 3./10.
1646	weight_substep(3) = 8./15.
1647
1648	weight_pres(1) = 1./3.
1649	weight_pres(2) = 5./12.
1650	weight_pres(3) = 1./4.
1651
1652	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1653
1654	weight_substep(1) = 1./2.
1655	weight_substep(2) = 1./2.
1656
1657	weight_pres(1) = 1./2.
1658	weight_pres(2) = 1./2.
1659
1660	ELSE ! for Euler-method
1661
1662	weight_substep(1) = 1.0
1663	weight_pres(1) = 1.0
1664
1665	ENDIF
1666
1667	!
1668	!-- Initialize Rayleigh damping factors
1669	rdf = 0.0
1670	rdf_sc = 0.0
1671	IF ( rayleigh_damping_factor /= 0.0 ) THEN
1672	IF ( .NOT. ocean ) THEN
1673	DO k = nzb+1, nzt
1674	IF ( zu(k) >= rayleigh_damping_height ) THEN
1675	rdf(k) = rayleigh_damping_factor * &
1676	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
1677	/ ( zu(nzt) - rayleigh_damping_height ) )&
1678	)**2
1679	ENDIF
1680	ENDDO
1681	ELSE
1682	DO k = nzt, nzb+1, -1
1683	IF ( zu(k) <= rayleigh_damping_height ) THEN
1684	rdf(k) = rayleigh_damping_factor * &
1685	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
1686	/ ( rayleigh_damping_height - zu(nzb+1)))&
1687	)**2
1688	ENDIF
1689	ENDDO
1690	ENDIF
1691	ENDIF
1692	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1693
1694	!
1695	!-- Initialize the starting level and the vertical smoothing factor used for
1696	!-- the external pressure gradient
1697	dp_smooth_factor = 1.0
1698	IF ( dp_external ) THEN
1699	!
1700	!-- Set the starting level dp_level_ind_b only if it has not been set before
1701	!-- (e.g. in init_grid).
1702	IF ( dp_level_ind_b == 0 ) THEN
1703	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1704	dp_level_ind_b = ind_array(1) - 1 + nzb
1705	! MINLOC uses lower array bound 1
1706	ENDIF
1707	IF ( dp_smooth ) THEN
1708	dp_smooth_factor(:dp_level_ind_b) = 0.0
1709	DO k = dp_level_ind_b+1, nzt
1710	dp_smooth_factor(k) = 0.5 * ( 1.0 + SIN( pi * &
1711	( REAL( k - dp_level_ind_b ) / &
1712	REAL( nzt - dp_level_ind_b ) - 0.5 ) ) )
1713	ENDDO
1714	ENDIF
1715	ENDIF
1716
1717	!
1718	!-- Initialize damping zone for the potential temperature in case of
1719	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1720	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1721	ptdf_x = 0.0
1722	ptdf_y = 0.0
1723	IF ( bc_lr_dirrad ) THEN
1724	DO i = nxl, nxr
1725	IF ( ( i * dx ) < pt_damping_width ) THEN
1726	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5 * &
1727	REAL( pt_damping_width - i * dx ) / ( &
1728	REAL( pt_damping_width ) ) ) )**2
1729	ENDIF
1730	ENDDO
1731	ELSEIF ( bc_lr_raddir ) THEN
1732	DO i = nxl, nxr
1733	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1734	ptdf_x(i) = pt_damping_factor * &
1735	SIN( pi * 0.5 * ( ( i - nx ) * dx + pt_damping_width ) / &
1736	REAL( pt_damping_width ) )**2
1737	ENDIF
1738	ENDDO
1739	ELSEIF ( bc_ns_dirrad ) THEN
1740	DO j = nys, nyn
1741	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1742	ptdf_y(j) = pt_damping_factor * &
1743	SIN( pi * 0.5 * ( ( j - ny ) * dy + pt_damping_width ) / &
1744	REAL( pt_damping_width ) )**2
1745	ENDIF
1746	ENDDO
1747	ELSEIF ( bc_ns_raddir ) THEN
1748	DO j = nys, nyn
1749	IF ( ( j * dy ) < pt_damping_width ) THEN
1750	ptdf_y(j) = pt_damping_factor * &
1751	SIN( pi * 0.5 * ( pt_damping_width - j * dy ) / &
1752	REAL( pt_damping_width ) )**2
1753	ENDIF
1754	ENDDO
1755	ENDIF
1756
1757	!
1758	!-- Initialize local summation arrays for routine flow_statistics.
1759	!-- This is necessary because they may not yet have been initialized when they
1760	!-- are called from flow_statistics (or - depending on the chosen model run -
1761	!-- are never initialized)
1762	sums_divnew_l = 0.0
1763	sums_divold_l = 0.0
1764	sums_l_l = 0.0
1765	sums_up_fraction_l = 0.0
1766	sums_wsts_bc_l = 0.0
1767
1768	!
1769	!-- Pre-set masks for regional statistics. Default is the total model domain.
1770	!-- Ghost points are excluded because counting values at the ghost boundaries
1771	!-- would bias the statistics
1772	rmask = 1.0
1773	rmask(:,nxlg:nxl-1,:) = 0.0; rmask(:,nxr+1:nxrg,:) = 0.0
1774	rmask(nysg:nys-1,:,:) = 0.0; rmask(nyn+1:nyng,:,:) = 0.0
1775
1776	!
1777	!-- User-defined initializing actions. Check afterwards, if maximum number
1778	!-- of allowed timeseries is exceeded
1779	CALL user_init
1780
1781	IF ( dots_num > dots_max ) THEN
1782	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1783	' its maximum of dots_max = ', dots_max, &
1784	' &Please increase dots_max in modules.f90.'
1785	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1786	ENDIF
1787
1788	!
1789	!-- Input binary data file is not needed anymore. This line must be placed
1790	!-- after call of user_init!
1791	CALL close_file( 13 )
1792
1793	!
1794	!-- Compute total sum of active mask grid points
1795	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1796	!-- total domain
1797	!-- ngp_3d: number of grid points of the total domain
1798	ngp_2dh_outer_l = 0
1799	ngp_2dh_outer = 0
1800	ngp_2dh_s_inner_l = 0
1801	ngp_2dh_s_inner = 0
1802	ngp_2dh_l = 0
1803	ngp_2dh = 0
1804	ngp_3d_inner_l = 0.0
1805	ngp_3d_inner = 0
1806	ngp_3d = 0
1807	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1808
1809	DO sr = 0, statistic_regions
1810	DO i = nxl, nxr
1811	DO j = nys, nyn
1812	IF ( rmask(j,i,sr) == 1.0 ) THEN
1813	!
1814	!-- All xy-grid points
1815	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1816	!
1817	!-- xy-grid points above topography
1818	DO k = nzb_s_outer(j,i), nz + 1
1819	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1820	ENDDO
1821	DO k = nzb_s_inner(j,i), nz + 1
1822	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1823	ENDDO
1824	!
1825	!-- All grid points of the total domain above topography
1826	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1827	( nz - nzb_s_inner(j,i) + 2 )
1828	ENDIF
1829	ENDDO
1830	ENDDO
1831	ENDDO
1832
1833	sr = statistic_regions + 1
1834	#if defined( __parallel )
1835	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1836	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1837	comm2d, ierr )
1838	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1839	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1840	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1841	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1842	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1843	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1844	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1845	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1846	MPI_SUM, comm2d, ierr )
1847	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1848	#else
1849	ngp_2dh = ngp_2dh_l
1850	ngp_2dh_outer = ngp_2dh_outer_l
1851	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1852	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1853	#endif
1854
1855	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1856	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1857
1858	!
1859	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1860	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1861	!-- the respective subdomain lie below the surface topography
1862	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1863	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1864	ngp_3d_inner(:) )
1865	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1866
1867	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1868
1869
1870	END SUBROUTINE init_3d_model

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