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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1319

Last change on this file since 1319 was 1319, checked in by raasch, 10 years ago
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1	SUBROUTINE init_3d_model
2
3	!--------------------------------------------------------------------------------!
4	! This file is part of PALM.
5	!
6	! PALM is free software: you can redistribute it and/or modify it under the terms
7	! of the GNU General Public License as published by the Free Software Foundation,
8	! either version 3 of the License, or (at your option) any later version.
9	!
10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13	!
14	! You should have received a copy of the GNU General Public License along with
15	! PALM. If not, see <http://www.gnu.org/licenses/>.
16	!
17	! Copyright 1997-2014 Leibniz Universitaet Hannover
18	!--------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! ------------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: init_3d_model.f90 1319 2014-03-17 15:08:44Z raasch $
27	!
28	! 1318 2014-03-17 13:35:16Z raasch
29	! module interfaces removed
30	!
31	! 1316 2014-03-17 07:44:59Z heinze
32	! Bugfix: allocation of w_subs
33	!
34	! 1299 2014-03-06 13:15:21Z heinze
35	! Allocate w_subs due to extension of large scale subsidence in combination
36	! with large scale forcing data (LSF_DATA)
37	!
38	! 1241 2013-10-30 11:36:58Z heinze
39	! Overwrite initial profiles in case of nudging
40	! Inititialize shf and qsws in case of large_scale_forcing
41	!
42	! 1221 2013-09-10 08:59:13Z raasch
43	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
44	! copy
45	!
46	! 1212 2013-08-15 08:46:27Z raasch
47	! array tri is allocated and included in data copy statement
48	!
49	! 1195 2013-07-01 12:27:57Z heinze
50	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
51	!
52	! 1179 2013-06-14 05:57:58Z raasch
53	! allocate and set ref_state to be used in buoyancy terms
54	!
55	! 1171 2013-05-30 11:27:45Z raasch
56	! diss array is allocated with full size if accelerator boards are used
57	!
58	! 1159 2013-05-21 11:58:22Z fricke
59	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
60	!
61	! 1153 2013-05-10 14:33:08Z raasch
62	! diss array is allocated with dummy elements even if it is not needed
63	! (required by PGI 13.4 / CUDA 5.0)
64	!
65	! 1115 2013-03-26 18:16:16Z hoffmann
66	! unused variables removed
67	!
68	! 1113 2013-03-10 02:48:14Z raasch
69	! openACC directive modified
70	!
71	! 1111 2013-03-08 23:54:10Z raasch
72	! openACC directives added for pres
73	! array diss allocated only if required
74	!
75	! 1092 2013-02-02 11:24:22Z raasch
76	! unused variables removed
77	!
78	! 1065 2012-11-22 17:42:36Z hoffmann
79	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
80	!
81	! 1053 2012-11-13 17:11:03Z hoffmann
82	! allocation and initialisation of necessary data arrays for the two-moment
83	! cloud physics scheme the two new prognostic equations (nr, qr):
84	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
85	! +tend_*, prr
86	!
87	! 1036 2012-10-22 13:43:42Z raasch
88	! code put under GPL (PALM 3.9)
89	!
90	! 1032 2012-10-21 13:03:21Z letzel
91	! save memory by not allocating pt_2 in case of neutral = .T.
92	!
93	! 1025 2012-10-07 16:04:41Z letzel
94	! bugfix: swap indices of mask for ghost boundaries
95	!
96	! 1015 2012-09-27 09:23:24Z raasch
97	! mask is set to zero for ghost boundaries
98	!
99	! 1010 2012-09-20 07:59:54Z raasch
100	! cpp switch __nopointer added for pointer free version
101	!
102	! 1003 2012-09-14 14:35:53Z raasch
103	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
104	!
105	! 1001 2012-09-13 14:08:46Z raasch
106	! all actions concerning leapfrog scheme removed
107	!
108	! 996 2012-09-07 10:41:47Z raasch
109	! little reformatting
110	!
111	! 978 2012-08-09 08:28:32Z fricke
112	! outflow damping layer removed
113	! roughness length for scalar quantites z0h added
114	! damping zone for the potential temperatur in case of non-cyclic lateral
115	! boundaries added
116	! initialization of ptdf_x, ptdf_y
117	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
118	!
119	! 849 2012-03-15 10:35:09Z raasch
120	! init_particles renamed lpm_init
121	!
122	! 825 2012-02-19 03:03:44Z raasch
123	! wang_collision_kernel renamed wang_kernel
124	!
125	! 790 2011-11-29 03:11:20Z raasch
126	! diss is also allocated in case that the Wang kernel is used
127	!
128	! 787 2011-11-28 12:49:05Z heinze $
129	! bugfix: call init_advec in every case - not only for inital runs
130	!
131	! 785 2011-11-28 09:47:19Z raasch
132	! initialization of rdf_sc
133	!
134	! 767 2011-10-14 06:39:12Z raasch
135	! adjustments concerning implementation of prescribed u,v-profiles
136	! bugfix: dirichlet_0 conditions for ug/vg moved to check_parameters
137	!
138	! 759 2011-09-15 13:58:31Z raasch
139	! Splitting of parallel I/O in blocks of PEs
140	! Bugfix: No zero assignments to volume_flow_initial and volume_flow_area in
141	! case of normal restart runs.
142	!
143	! 713 2011-03-30 14:21:21Z suehring
144	! weight_substep and weight_pres are given as fractions.
145	!
146	! 709 2011-03-30 09:31:40Z raasch
147	! formatting adjustments
148	!
149	! 707 2011-03-29 11:39:40Z raasch
150	! p_sub renamed p_loc and allocated depending on the chosen pressure solver,
151	! initial assignments of zero to array p for iterative solvers only,
152	! bc_lr/ns replaced by bc_lr/ns_dirrad/raddir
153	!
154	! 680 2011-02-04 23:16:06Z gryschka
155	! bugfix: volume_flow_control
156	!
157	! 673 2011-01-18 16:19:48Z suehring
158	! weight_substep (moved from advec_ws) and weight_pres added.
159	! Allocate p_sub when using Multigrid or SOR solver.
160	! Call of ws_init moved behind the if requests.
161	!
162	! 667 2010-12-23 12:06:00Z suehring/gryschka
163	! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng in loops and
164	! allocation of arrays. Calls of exchange_horiz are modified.
165	! Call ws_init to initialize arrays needed for calculating statisticas and for
166	! optimization when ws-scheme is used.
167	! Initial volume flow is now calculated by using the variable hom_sum.
168	! Therefore the correction of initial volume flow for non-flat topography
169	! removed (removed u_nzb_p1_for_vfc and v_nzb_p1_for_vfc)
170	! Changed surface boundary conditions for u and v in case of ibc_uv_b == 0 from
171	! mirror to Dirichlet boundary conditions (u=v=0), so that k=nzb is
172	! representative for the height z0.
173	! Bugfix: type conversion of '1' to 64bit for the MAX function (ngp_3d_inner)
174	!
175	! 622 2010-12-10 08:08:13Z raasch
176	! optional barriers included in order to speed up collective operations
177	!
178	! 560 2010-09-09 10:06:09Z weinreis
179	! bugfix: correction of calculating ngp_3d for 64 bit
180	!
181	! 485 2010-02-05 10:57:51Z raasch
182	! calculation of ngp_3d + ngp_3d_inner changed because they have now 64 bit
183	!
184	! 407 2009-12-01 15:01:15Z maronga
185	! var_ts is replaced by dots_max
186	! Enabled passive scalar/humidity wall fluxes for non-flat topography
187	!
188	! 388 2009-09-23 09:40:33Z raasch
189	! Initialization of prho added.
190	! bugfix: correction of initial volume flow for non-flat topography
191	! bugfix: zero initialization of arrays within buildings for 'cyclic_fill'
192	! bugfix: avoid that ngp_2dh_s_inner becomes zero
193	! initializing_actions='read_data_for_recycling' renamed to 'cyclic_fill', now
194	! independent of turbulent_inflow
195	! Output of messages replaced by message handling routine.
196	! Set the starting level and the vertical smoothing factor used for
197	! the external pressure gradient
198	! +conserve_volume_flow_mode: 'default', 'initial_profiles', 'inflow_profile'
199	! and 'bulk_velocity'
200	! If the inversion height calculated by the prerun is zero,
201	! inflow_damping_height must be explicitly specified.
202	!
203	! 181 2008-07-30 07:07:47Z raasch
204	! bugfix: zero assignments to tendency arrays in case of restarts,
205	! further extensions and modifications in the initialisation of the plant
206	! canopy model,
207	! allocation of hom_sum moved to parin, initialization of spectrum_x\|y directly
208	! after allocating theses arrays,
209	! read data for recycling added as new initialization option,
210	! dummy allocation for diss
211	!
212	! 138 2007-11-28 10:03:58Z letzel
213	! New counter ngp_2dh_s_inner.
214	! Allow new case bc_uv_t = 'dirichlet_0' for channel flow.
215	! Corrected calculation of initial volume flow for 'set_1d-model_profiles' and
216	! 'set_constant_profiles' in case of buildings in the reference cross-sections.
217	!
218	! 108 2007-08-24 15:10:38Z letzel
219	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
220	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
221	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
222	! Rayleigh damping for ocean, optionally calculate km and kh from initial
223	! TKE e_init
224	!
225	! 97 2007-06-21 08:23:15Z raasch
226	! Initialization of salinity, call of init_ocean
227	!
228	! 87 2007-05-22 15:46:47Z raasch
229	! var_hom and var_sum renamed pr_palm
230	!
231	! 75 2007-03-22 09:54:05Z raasch
232	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
233	! bugfix for cases with the outflow damping layer extending over more than one
234	! subdomain, moisture renamed humidity,
235	! new initializing action "by_user" calls user_init_3d_model,
236	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
237	! initial velocities at nzb+1 are regarded for volume
238	! flow control in case they have been set zero before (to avoid small timesteps)
239	! -uvmean_outflow, uxrp, vynp eliminated
240	!
241	! 19 2007-02-23 04:53:48Z raasch
242	! +handling of top fluxes
243	!
244	! RCS Log replace by Id keyword, revision history cleaned up
245	!
246	! Revision 1.49 2006/08/22 15:59:07 raasch
247	! No optimization of this file on the ibmy (Yonsei Univ.)
248	!
249	! Revision 1.1 1998/03/09 16:22:22 raasch
250	! Initial revision
251	!
252	!
253	! Description:
254	! ------------
255	! Allocation of arrays and initialization of the 3D model via
256	! a) pre-run the 1D model
257	! or
258	! b) pre-set constant linear profiles
259	! or
260	! c) read values of a previous run
261	!------------------------------------------------------------------------------!
262
263	USE advec_ws
264	USE arrays_3d
265	USE averaging
266	USE cloud_parameters
267	USE constants
268	USE control_parameters
269	USE cpulog
270	USE grid_variables
271	USE indices
272	USE ls_forcing_mod
273	USE model_1d
274	USE netcdf_control
275	USE particle_attributes
276	USE pegrid
277	USE profil_parameter
278	USE random_function_mod
279	USE statistics
280	USE transpose_indices
281
282	IMPLICIT NONE
283
284	INTEGER :: i, ind_array(1), j, k, sr
285
286	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l
287
288	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l, &
289	ngp_2dh_s_inner_l
290
291	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
292
293	REAL, DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l, ngp_3d_inner_tmp
294
295
296	!
297	!-- Allocate arrays
298	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
299	ngp_3d(0:statistic_regions), &
300	ngp_3d_inner(0:statistic_regions), &
301	ngp_3d_inner_l(0:statistic_regions), &
302	ngp_3d_inner_tmp(0:statistic_regions), &
303	sums_divnew_l(0:statistic_regions), &
304	sums_divold_l(0:statistic_regions) )
305	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
306	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
307	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
308	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
309	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
310	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
311	sums(nzb:nzt+1,pr_palm+max_pr_user), &
312	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
313	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
314	sums_up_fraction_l(10,3,0:statistic_regions), &
315	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
316	ts_value(dots_max,0:statistic_regions) )
317	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
318
319	ALLOCATE( rif(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
320	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
321	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
322	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
323	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
324	z0h(nysg:nyng,nxlg:nxrg) )
325
326	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
327	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
328	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
329	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
330	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
331
332	#if defined( __nopointer )
333	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
334	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
335	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
336	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
337	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
338	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
339	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
340	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
341	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
342	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
343	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
344	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
345	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
346	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
347	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
348	#else
349	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
350	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
351	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
352	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
353	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
354	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
355	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
356	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
357	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
358	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
359	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
360	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
361	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
362	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
363	IF ( .NOT. neutral ) THEN
364	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
365	ENDIF
366	#endif
367
368	!
369	!-- Following array is required for perturbation pressure within the iterative
370	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
371	!-- the weighted average of the substeps and cannot be used in the Poisson
372	!-- solver.
373	IF ( psolver == 'sor' ) THEN
374	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
375	ELSEIF ( psolver == 'multigrid' ) THEN
376	!
377	!-- For performance reasons, multigrid is using one ghost layer only
378	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
379	ENDIF
380
381	!
382	!-- Array for storing constant coeffficients of the tridiagonal solver
383	IF ( psolver == 'poisfft' ) THEN
384	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
385	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
386	ENDIF
387
388	IF ( humidity .OR. passive_scalar ) THEN
389	!
390	!-- 2D-humidity/scalar arrays
391	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
392	qsws(nysg:nyng,nxlg:nxrg), &
393	qswst(nysg:nyng,nxlg:nxrg) )
394
395	!
396	!-- 3D-humidity/scalar arrays
397	#if defined( __nopointer )
398	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
399	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
400	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
401	#else
402	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
403	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
404	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
405	#endif
406
407	!
408	!-- 3D-arrays needed for humidity only
409	IF ( humidity ) THEN
410	#if defined( __nopointer )
411	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
412	#else
413	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
414	#endif
415
416	IF ( cloud_physics ) THEN
417
418	!
419	!-- Liquid water content
420	#if defined( __nopointer )
421	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
422	#else
423	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
424	#endif
425	!
426	!-- Precipitation amount and rate (only needed if output is switched)
427	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
428	precipitation_rate(nysg:nyng,nxlg:nxrg) )
429
430	IF ( icloud_scheme == 0 ) THEN
431	!
432	!-- 1D-arrays
433	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
434	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
435	!
436	!-- 3D-cloud water content
437	#if defined( __nopointer )
438	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
439	#else
440	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
441	#endif
442	!
443	!-- 3D-tendency arrays
444	ALLOCATE( tend_pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
445	tend_q(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
446
447	IF ( precipitation ) THEN
448	!
449	!-- 1D-arrays
450	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
451	!
452	!
453	!-- 3D-tendency arrays
454	ALLOCATE( tend_nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
455	tend_qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
456	!
457	!-- 2D-rain water content and rain drop concentration arrays
458	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
459	qrsws(nysg:nyng,nxlg:nxrg), &
460	qrswst(nysg:nyng,nxlg:nxrg), &
461	nrs(nysg:nyng,nxlg:nxrg), &
462	nrsws(nysg:nyng,nxlg:nxrg), &
463	nrswst(nysg:nyng,nxlg:nxrg) )
464	!
465	!-- 3D-rain water content, rain drop concentration arrays
466	#if defined( __nopointer )
467	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
468	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
469	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
470	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
471	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
472	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
473	#else
474	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
475	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
476	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
477	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
478	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
479	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
480	#endif
481	!
482	!-- 3d-precipitation rate
483	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
484	ENDIF
485
486	ENDIF
487	ENDIF
488
489	IF ( cloud_droplets ) THEN
490	!
491	!-- Liquid water content, change in liquid water content
492	#if defined( __nopointer )
493	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
494	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
495	#else
496	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
497	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
498	#endif
499	!
500	!-- Real volume of particles (with weighting), volume of particles
501	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
502	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
503	ENDIF
504
505	ENDIF
506
507	ENDIF
508
509	IF ( ocean ) THEN
510	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
511	saswst(nysg:nyng,nxlg:nxrg) )
512	#if defined( __nopointer )
513	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
514	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
515	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
516	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
517	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
518	#else
519	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
520	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
521	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
522	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
523	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
524	prho => prho_1
525	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
526	! density to be apointer
527	#endif
528	IF ( humidity_remote ) THEN
529	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
530	qswst_remote = 0.0
531	ENDIF
532	ENDIF
533
534	!
535	!-- 3D-array for storing the dissipation, needed for calculating the sgs
536	!-- particle velocities
537	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence .OR. &
538	num_acc_per_node > 0 ) THEN
539	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
540	ENDIF
541
542	IF ( dt_dosp /= 9999999.9 ) THEN
543	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
544	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
545	spectrum_x = 0.0
546	spectrum_y = 0.0
547	ENDIF
548
549	!
550	!-- 1D-array for large scale subsidence velocity
551	ALLOCATE ( w_subs(nzb:nzt+1) )
552	w_subs = 0.0
553
554
555	!
556	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
557	IF ( plant_canopy ) THEN
558	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
559	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
560	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
561	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
562	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
563
564	IF ( passive_scalar ) THEN
565	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
566	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
567	ENDIF
568
569	IF ( cthf /= 0.0 ) THEN
570	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
571	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
572	ENDIF
573
574	ENDIF
575
576	!
577	!-- 4D-array for storing the Rif-values at vertical walls
578	IF ( topography /= 'flat' ) THEN
579	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
580	rif_wall = 0.0
581	ENDIF
582
583	!
584	!-- Arrays to store velocity data from t-dt and the phase speeds which
585	!-- are needed for radiation boundary conditions
586	IF ( outflow_l ) THEN
587	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
588	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
589	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
590	ENDIF
591	IF ( outflow_r ) THEN
592	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
593	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
594	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
595	ENDIF
596	IF ( outflow_l .OR. outflow_r ) THEN
597	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
598	c_w(nzb:nzt+1,nysg:nyng) )
599	ENDIF
600	IF ( outflow_s ) THEN
601	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
602	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
603	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
604	ENDIF
605	IF ( outflow_n ) THEN
606	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
607	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
608	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
609	ENDIF
610	IF ( outflow_s .OR. outflow_n ) THEN
611	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
612	c_w(nzb:nzt+1,nxlg:nxrg) )
613	ENDIF
614	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
615	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
616	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
617	ENDIF
618
619
620	#if ! defined( __nopointer )
621	!
622	!-- Initial assignment of the pointers
623	e => e_1; e_p => e_2; te_m => e_3
624	IF ( .NOT. neutral ) THEN
625	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
626	ELSE
627	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
628	ENDIF
629	u => u_1; u_p => u_2; tu_m => u_3
630	v => v_1; v_p => v_2; tv_m => v_3
631	w => w_1; w_p => w_2; tw_m => w_3
632
633	IF ( humidity .OR. passive_scalar ) THEN
634	q => q_1; q_p => q_2; tq_m => q_3
635	IF ( humidity ) THEN
636	vpt => vpt_1
637	IF ( cloud_physics ) THEN
638	ql => ql_1
639	IF ( icloud_scheme == 0 ) THEN
640	qc => qc_1
641	IF ( precipitation ) THEN
642	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
643	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
644	ENDIF
645	ENDIF
646	ENDIF
647	ENDIF
648	IF ( cloud_droplets ) THEN
649	ql => ql_1
650	ql_c => ql_2
651	ENDIF
652	ENDIF
653
654	IF ( ocean ) THEN
655	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
656	ENDIF
657	#endif
658
659	!
660	!-- Allocate arrays containing the RK coefficient for calculation of
661	!-- perturbation pressure and turbulent fluxes. At this point values are
662	!-- set for pressure calculation during initialization (where no timestep
663	!-- is done). Further below the values needed within the timestep scheme
664	!-- will be set.
665	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
666	weight_pres(1:intermediate_timestep_count_max) )
667	weight_substep = 1.0
668	weight_pres = 1.0
669	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
670
671	!
672	!-- Initialize model variables
673	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
674	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
675	!
676	!-- First model run of a possible job queue.
677	!-- Initial profiles of the variables must be computes.
678	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
679	!
680	!-- Use solutions of the 1D model as initial profiles,
681	!-- start 1D model
682	CALL init_1d_model
683	!
684	!-- Transfer initial profiles to the arrays of the 3D model
685	DO i = nxlg, nxrg
686	DO j = nysg, nyng
687	e(:,j,i) = e1d
688	kh(:,j,i) = kh1d
689	km(:,j,i) = km1d
690	pt(:,j,i) = pt_init
691	u(:,j,i) = u1d
692	v(:,j,i) = v1d
693	ENDDO
694	ENDDO
695
696	IF ( humidity .OR. passive_scalar ) THEN
697	DO i = nxlg, nxrg
698	DO j = nysg, nyng
699	q(:,j,i) = q_init
700	ENDDO
701	ENDDO
702	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
703	precipitation ) THEN
704	DO i = nxlg, nxrg
705	DO j = nysg, nyng
706	qr(:,j,i) = 0.0
707	nr(:,j,i) = 0.0
708	ENDDO
709	ENDDO
710	!
711	!-- Initialze nc_1d with default value
712	nc_1d(:) = nc_const
713
714	ENDIF
715	ENDIF
716
717	IF ( .NOT. constant_diffusion ) THEN
718	DO i = nxlg, nxrg
719	DO j = nysg, nyng
720	e(:,j,i) = e1d
721	ENDDO
722	ENDDO
723	!
724	!-- Store initial profiles for output purposes etc.
725	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
726
727	IF ( prandtl_layer ) THEN
728	rif = rif1d(nzb+1)
729	ts = 0.0 ! could actually be computed more accurately in the
730	! 1D model. Update when opportunity arises.
731	us = us1d
732	usws = usws1d
733	vsws = vsws1d
734	ELSE
735	ts = 0.0 ! must be set, because used in
736	rif = 0.0 ! flowste
737	us = 0.0
738	usws = 0.0
739	vsws = 0.0
740	ENDIF
741
742	ELSE
743	e = 0.0 ! must be set, because used in
744	rif = 0.0 ! flowste
745	ts = 0.0
746	us = 0.0
747	usws = 0.0
748	vsws = 0.0
749	ENDIF
750	uswst = top_momentumflux_u
751	vswst = top_momentumflux_v
752
753	!
754	!-- In every case qs = 0.0 (see also pt)
755	!-- This could actually be computed more accurately in the 1D model.
756	!-- Update when opportunity arises!
757	IF ( humidity .OR. passive_scalar ) THEN
758	qs = 0.0
759	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
760	precipitation ) THEN
761	qrs = 0.0
762	nrs = 0.0
763	ENDIF
764	ENDIF
765
766	!
767	!-- inside buildings set velocities back to zero
768	IF ( topography /= 'flat' ) THEN
769	DO i = nxl-1, nxr+1
770	DO j = nys-1, nyn+1
771	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
772	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
773	ENDDO
774	ENDDO
775
776	!
777	!-- WARNING: The extra boundary conditions set after running the
778	!-- ------- 1D model impose an error on the divergence one layer
779	!-- below the topography; need to correct later
780	!-- ATTENTION: Provisional correction for Piacsek & Williams
781	!-- --------- advection scheme: keep u and v zero one layer below
782	!-- the topography.
783	IF ( ibc_uv_b == 1 ) THEN
784	!
785	!-- Neumann condition
786	DO i = nxl-1, nxr+1
787	DO j = nys-1, nyn+1
788	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
789	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
790	ENDDO
791	ENDDO
792
793	ENDIF
794
795	ENDIF
796
797	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
798	THEN
799
800	!
801	!-- Overwrite initial profiles in case of nudging
802	IF ( nudging ) THEN
803	pt_init = ptnudge(:,1)
804	u_init = unudge(:,1)
805	v_init = vnudge(:,1)
806	IF ( humidity .OR. passive_scalar ) THEN
807	q_init = qnudge(:,1)
808	ENDIF
809
810	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
811	'scalars from NUDGING_DATA are used.'
812	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
813	ENDIF
814
815	!
816	!-- Use constructed initial profiles (velocity constant with height,
817	!-- temperature profile with constant gradient)
818	DO i = nxlg, nxrg
819	DO j = nysg, nyng
820	pt(:,j,i) = pt_init
821	u(:,j,i) = u_init
822	v(:,j,i) = v_init
823	ENDDO
824	ENDDO
825
826	!
827	!-- Set initial horizontal velocities at the lowest computational grid
828	!-- levels to zero in order to avoid too small time steps caused by the
829	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
830	!-- in the limiting formula!). The original values are stored to be later
831	!-- used for volume flow control.
832	DO i = nxlg, nxrg
833	DO j = nysg, nyng
834	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
835	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
836	ENDDO
837	ENDDO
838
839	IF ( humidity .OR. passive_scalar ) THEN
840	DO i = nxlg, nxrg
841	DO j = nysg, nyng
842	q(:,j,i) = q_init
843	ENDDO
844	ENDDO
845	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
846	!
847	!-- Initialze nc_1d with default value
848	nc_1d(:) = nc_const
849
850	IF ( precipitation ) THEN
851	DO i = nxlg, nxrg
852	DO j = nysg, nyng
853	qr(:,j,i) = 0.0
854	nr(:,j,i) = 0.0
855	ENDDO
856	ENDDO
857	ENDIF
858
859	ENDIF
860	ENDIF
861
862	IF ( ocean ) THEN
863	DO i = nxlg, nxrg
864	DO j = nysg, nyng
865	sa(:,j,i) = sa_init
866	ENDDO
867	ENDDO
868	ENDIF
869
870	IF ( constant_diffusion ) THEN
871	km = km_constant
872	kh = km / prandtl_number
873	e = 0.0
874	ELSEIF ( e_init > 0.0 ) THEN
875	DO k = nzb+1, nzt
876	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
877	ENDDO
878	km(nzb,:,:) = km(nzb+1,:,:)
879	km(nzt+1,:,:) = km(nzt,:,:)
880	kh = km / prandtl_number
881	e = e_init
882	ELSE
883	IF ( .NOT. ocean ) THEN
884	kh = 0.01 ! there must exist an initial diffusion, because
885	km = 0.01 ! otherwise no TKE would be produced by the
886	! production terms, as long as not yet
887	! e = (u/cm)*2 at k=nzb+1
888	ELSE
889	kh = 0.00001
890	km = 0.00001
891	ENDIF
892	e = 0.0
893	ENDIF
894	rif = 0.0
895	ts = 0.0
896	us = 0.0
897	usws = 0.0
898	uswst = top_momentumflux_u
899	vsws = 0.0
900	vswst = top_momentumflux_v
901	IF ( humidity .OR. passive_scalar ) qs = 0.0
902
903	!
904	!-- Compute initial temperature field and other constants used in case
905	!-- of a sloping surface
906	IF ( sloping_surface ) CALL init_slope
907
908	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
909	THEN
910	!
911	!-- Initialization will completely be done by the user
912	CALL user_init_3d_model
913
914	ENDIF
915	!
916	!-- Bottom boundary
917	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
918	u(nzb,:,:) = 0.0
919	v(nzb,:,:) = 0.0
920	ENDIF
921
922	!
923	!-- Apply channel flow boundary condition
924	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
925	u(nzt+1,:,:) = 0.0
926	v(nzt+1,:,:) = 0.0
927	ENDIF
928
929	!
930	!-- Calculate virtual potential temperature
931	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
932
933	!
934	!-- Store initial profiles for output purposes etc.
935	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
936	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
937	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
938	hom(nzb,1,5,:) = 0.0
939	hom(nzb,1,6,:) = 0.0
940	ENDIF
941	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
942	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
943	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
944
945	IF ( ocean ) THEN
946	!
947	!-- Store initial salinity profile
948	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
949	ENDIF
950
951	IF ( humidity ) THEN
952	!
953	!-- Store initial profile of total water content, virtual potential
954	!-- temperature
955	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
956	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
957	IF ( cloud_physics .OR. cloud_droplets ) THEN
958	!
959	!-- Store initial profile of specific humidity and potential
960	!-- temperature
961	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
962	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
963	ENDIF
964	ENDIF
965
966	IF ( passive_scalar ) THEN
967	!
968	!-- Store initial scalar profile
969	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
970	ENDIF
971
972	!
973	!-- Initialize fluxes at bottom surface
974	IF ( use_surface_fluxes ) THEN
975
976	IF ( constant_heatflux ) THEN
977	!
978	!-- Heat flux is prescribed
979	IF ( random_heatflux ) THEN
980	CALL disturb_heatflux
981	ELSE
982	shf = surface_heatflux
983	!
984	!-- Initialize shf with data from external file LSF_DATA
985	IF ( large_scale_forcing .AND. lsf_surf ) THEN
986	CALL ls_forcing_surf ( simulated_time )
987	ENDIF
988
989	!
990	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
991	IF ( TRIM( topography ) /= 'flat' ) THEN
992	DO i = nxlg, nxrg
993	DO j = nysg, nyng
994	IF ( nzb_s_inner(j,i) /= 0 ) THEN
995	shf(j,i) = wall_heatflux(0)
996	ENDIF
997	ENDDO
998	ENDDO
999	ENDIF
1000	ENDIF
1001	ENDIF
1002
1003	!
1004	!-- Determine the near-surface water flux
1005	IF ( humidity .OR. passive_scalar ) THEN
1006	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1007	precipitation ) THEN
1008	qrsws = 0.0
1009	nrsws = 0.0
1010	ENDIF
1011	IF ( constant_waterflux ) THEN
1012	qsws = surface_waterflux
1013	!
1014	!-- Over topography surface_waterflux is replaced by
1015	!-- wall_humidityflux(0)
1016	IF ( TRIM( topography ) /= 'flat' ) THEN
1017	wall_qflux = wall_humidityflux
1018	DO i = nxlg, nxrg
1019	DO j = nysg, nyng
1020	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1021	qsws(j,i) = wall_qflux(0)
1022	ENDIF
1023	ENDDO
1024	ENDDO
1025	ENDIF
1026	ENDIF
1027	ENDIF
1028
1029	ENDIF
1030
1031	!
1032	!-- Initialize fluxes at top surface
1033	!-- Currently, only the heatflux and salinity flux can be prescribed.
1034	!-- The latent flux is zero in this case!
1035	IF ( use_top_fluxes ) THEN
1036
1037	IF ( constant_top_heatflux ) THEN
1038	!
1039	!-- Heat flux is prescribed
1040	tswst = top_heatflux
1041
1042	IF ( humidity .OR. passive_scalar ) THEN
1043	qswst = 0.0
1044	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1045	precipitation ) THEN
1046	nrswst = 0.0
1047	qrswst = 0.0
1048	ENDIF
1049	ENDIF
1050
1051	IF ( ocean ) THEN
1052	saswsb = bottom_salinityflux
1053	saswst = top_salinityflux
1054	ENDIF
1055	ENDIF
1056
1057	!
1058	!-- Initialization in case of a coupled model run
1059	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1060	tswst = 0.0
1061	ENDIF
1062
1063	ENDIF
1064
1065	!
1066	!-- Initialize Prandtl layer quantities
1067	IF ( prandtl_layer ) THEN
1068
1069	z0 = roughness_length
1070	z0h = z0h_factor * z0
1071
1072	IF ( .NOT. constant_heatflux ) THEN
1073	!
1074	!-- Surface temperature is prescribed. Here the heat flux cannot be
1075	!-- simply estimated, because therefore rif, u* and theta* would have
1076	!-- to be computed by iteration. This is why the heat flux is assumed
1077	!-- to be zero before the first time step. It approaches its correct
1078	!-- value in the course of the first few time steps.
1079	shf = 0.0
1080	ENDIF
1081
1082	IF ( humidity .OR. passive_scalar ) THEN
1083	IF ( .NOT. constant_waterflux ) qsws = 0.0
1084	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1085	precipitation ) THEN
1086	qrsws = 0.0
1087	nrsws = 0.0
1088	ENDIF
1089	ENDIF
1090
1091	ENDIF
1092
1093	!
1094	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1095	!-- the reference state will be set (overwritten) in init_ocean)
1096	IF ( use_single_reference_value ) THEN
1097	IF ( .NOT. humidity ) THEN
1098	ref_state(:) = pt_reference
1099	ELSE
1100	ref_state(:) = vpt_reference
1101	ENDIF
1102	ELSE
1103	IF ( .NOT. humidity ) THEN
1104	ref_state(:) = pt_init(:)
1105	ELSE
1106	ref_state(:) = vpt(:,nys,nxl)
1107	ENDIF
1108	ENDIF
1109
1110	!
1111	!-- For the moment, vertical velocity is zero
1112	w = 0.0
1113
1114	!
1115	!-- Initialize array sums (must be defined in first call of pres)
1116	sums = 0.0
1117
1118	!
1119	!-- In case of iterative solvers, p must get an initial value
1120	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0
1121
1122	!
1123	!-- Treating cloud physics, liquid water content and precipitation amount
1124	!-- are zero at beginning of the simulation
1125	IF ( cloud_physics ) THEN
1126	ql = 0.0
1127	IF ( precipitation ) precipitation_amount = 0.0
1128	IF ( icloud_scheme == 0 ) THEN
1129	qc = 0.0
1130	nc_1d = nc_const
1131	ENDIF
1132	ENDIF
1133	!
1134	!-- Impose vortex with vertical axis on the initial velocity profile
1135	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1136	CALL init_rankine
1137	ENDIF
1138
1139	!
1140	!-- Impose temperature anomaly (advection test only)
1141	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1142	CALL init_pt_anomaly
1143	ENDIF
1144
1145	!
1146	!-- If required, change the surface temperature at the start of the 3D run
1147	IF ( pt_surface_initial_change /= 0.0 ) THEN
1148	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1149	ENDIF
1150
1151	!
1152	!-- If required, change the surface humidity/scalar at the start of the 3D
1153	!-- run
1154	IF ( ( humidity .OR. passive_scalar ) .AND. &
1155	q_surface_initial_change /= 0.0 ) THEN
1156	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1157	ENDIF
1158	!
1159	!-- Initialize the random number generator (from numerical recipes)
1160	CALL random_function_ini
1161
1162	!
1163	!-- Initialize old and new time levels.
1164	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1165	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1166
1167	IF ( humidity .OR. passive_scalar ) THEN
1168	tq_m = 0.0
1169	q_p = q
1170	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1171	precipitation ) THEN
1172	tqr_m = 0.0
1173	qr_p = qr
1174	tnr_m = 0.0
1175	nr_p = nr
1176	ENDIF
1177	ENDIF
1178
1179	IF ( ocean ) THEN
1180	tsa_m = 0.0
1181	sa_p = sa
1182	ENDIF
1183
1184
1185	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1186	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1187	THEN
1188	!
1189	!-- When reading data for cyclic fill of 3D prerun data files, read
1190	!-- some of the global variables from the restart file which are required
1191	!-- for initializing the inflow
1192	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1193
1194	DO i = 0, io_blocks-1
1195	IF ( i == io_group ) THEN
1196	CALL read_parts_of_var_list
1197	CALL close_file( 13 )
1198	ENDIF
1199	#if defined( __parallel )
1200	CALL MPI_BARRIER( comm2d, ierr )
1201	#endif
1202	ENDDO
1203
1204	ENDIF
1205
1206	!
1207	!-- Read binary data from restart file
1208	DO i = 0, io_blocks-1
1209	IF ( i == io_group ) THEN
1210	CALL read_3d_binary
1211	ENDIF
1212	#if defined( __parallel )
1213	CALL MPI_BARRIER( comm2d, ierr )
1214	#endif
1215	ENDDO
1216
1217	!
1218	!-- Initialization of the turbulence recycling method
1219	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1220	turbulent_inflow ) THEN
1221	!
1222	!-- First store the profiles to be used at the inflow.
1223	!-- These profiles are the (temporally) and horizontally averaged vertical
1224	!-- profiles from the prerun. Alternatively, prescribed profiles
1225	!-- for u,v-components can be used.
1226	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
1227
1228	IF ( use_prescribed_profile_data ) THEN
1229	mean_inflow_profiles(:,1) = u_init ! u
1230	mean_inflow_profiles(:,2) = v_init ! v
1231	ELSE
1232	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1233	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1234	ENDIF
1235	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1236	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1237
1238	!
1239	!-- If necessary, adjust the horizontal flow field to the prescribed
1240	!-- profiles
1241	IF ( use_prescribed_profile_data ) THEN
1242	DO i = nxlg, nxrg
1243	DO j = nysg, nyng
1244	DO k = nzb, nzt+1
1245	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1246	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1247	ENDDO
1248	ENDDO
1249	ENDDO
1250	ENDIF
1251
1252	!
1253	!-- Use these mean profiles at the inflow (provided that Dirichlet
1254	!-- conditions are used)
1255	IF ( inflow_l ) THEN
1256	DO j = nysg, nyng
1257	DO k = nzb, nzt+1
1258	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1259	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1260	w(k,j,nxlg:-1) = 0.0
1261	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1262	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1263	ENDDO
1264	ENDDO
1265	ENDIF
1266
1267	!
1268	!-- Calculate the damping factors to be used at the inflow. For a
1269	!-- turbulent inflow the turbulent fluctuations have to be limited
1270	!-- vertically because otherwise the turbulent inflow layer will grow
1271	!-- in time.
1272	IF ( inflow_damping_height == 9999999.9 ) THEN
1273	!
1274	!-- Default: use the inversion height calculated by the prerun; if
1275	!-- this is zero, inflow_damping_height must be explicitly
1276	!-- specified.
1277	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0 ) THEN
1278	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1279	ELSE
1280	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1281	'explicitly specified because&the inversion height ', &
1282	'calculated by the prerun is zero.'
1283	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1284	ENDIF
1285
1286	ENDIF
1287
1288	IF ( inflow_damping_width == 9999999.9 ) THEN
1289	!
1290	!-- Default for the transition range: one tenth of the undamped
1291	!-- layer
1292	inflow_damping_width = 0.1 * inflow_damping_height
1293
1294	ENDIF
1295
1296	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1297
1298	DO k = nzb, nzt+1
1299
1300	IF ( zu(k) <= inflow_damping_height ) THEN
1301	inflow_damping_factor(k) = 1.0
1302	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1303	inflow_damping_factor(k) = 1.0 - &
1304	( zu(k) - inflow_damping_height ) / &
1305	inflow_damping_width
1306	ELSE
1307	inflow_damping_factor(k) = 0.0
1308	ENDIF
1309
1310	ENDDO
1311
1312	ENDIF
1313
1314	!
1315	!-- Inside buildings set velocities and TKE back to zero
1316	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1317	topography /= 'flat' ) THEN
1318	!
1319	!-- Inside buildings set velocities and TKE back to zero.
1320	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1321	!-- maybe revise later.
1322	DO i = nxlg, nxrg
1323	DO j = nysg, nyng
1324	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1325	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1326	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1327	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1328	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1329	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1330	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1331	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1332	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1333	ENDDO
1334	ENDDO
1335
1336	ENDIF
1337
1338	!
1339	!-- Calculate initial temperature field and other constants used in case
1340	!-- of a sloping surface
1341	IF ( sloping_surface ) CALL init_slope
1342
1343	!
1344	!-- Initialize new time levels (only done in order to set boundary values
1345	!-- including ghost points)
1346	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1347	IF ( humidity .OR. passive_scalar ) THEN
1348	q_p = q
1349	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1350	precipitation ) THEN
1351	qr_p = qr
1352	nr_p = nr
1353	ENDIF
1354	ENDIF
1355	IF ( ocean ) sa_p = sa
1356
1357	!
1358	!-- Allthough tendency arrays are set in prognostic_equations, they have
1359	!-- have to be predefined here because they are used (but multiplied with 0)
1360	!-- there before they are set.
1361	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1362	IF ( humidity .OR. passive_scalar ) THEN
1363	tq_m = 0.0
1364	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1365	precipitation ) THEN
1366	tqr_m = 0.0
1367	tnr_m = 0.0
1368	ENDIF
1369	ENDIF
1370	IF ( ocean ) tsa_m = 0.0
1371
1372	ELSE
1373	!
1374	!-- Actually this part of the programm should not be reached
1375	message_string = 'unknown initializing problem'
1376	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1377	ENDIF
1378
1379
1380	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1381	!
1382	!-- Initialize old timelevels needed for radiation boundary conditions
1383	IF ( outflow_l ) THEN
1384	u_m_l(:,:,:) = u(:,:,1:2)
1385	v_m_l(:,:,:) = v(:,:,0:1)
1386	w_m_l(:,:,:) = w(:,:,0:1)
1387	ENDIF
1388	IF ( outflow_r ) THEN
1389	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1390	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1391	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1392	ENDIF
1393	IF ( outflow_s ) THEN
1394	u_m_s(:,:,:) = u(:,0:1,:)
1395	v_m_s(:,:,:) = v(:,1:2,:)
1396	w_m_s(:,:,:) = w(:,0:1,:)
1397	ENDIF
1398	IF ( outflow_n ) THEN
1399	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1400	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1401	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1402	ENDIF
1403
1404	ENDIF
1405
1406	!
1407	!-- Calculate the initial volume flow at the right and north boundary
1408	IF ( conserve_volume_flow ) THEN
1409
1410	IF ( use_prescribed_profile_data ) THEN
1411
1412	volume_flow_initial_l = 0.0
1413	volume_flow_area_l = 0.0
1414
1415	IF ( nxr == nx ) THEN
1416	DO j = nys, nyn
1417	DO k = nzb_2d(j,nx)+1, nzt
1418	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1419	u_init(k) * dzw(k)
1420	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1421	ENDDO
1422	ENDDO
1423	ENDIF
1424
1425	IF ( nyn == ny ) THEN
1426	DO i = nxl, nxr
1427	DO k = nzb_2d(ny,i)+1, nzt
1428	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1429	v_init(k) * dzw(k)
1430	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1431	ENDDO
1432	ENDDO
1433	ENDIF
1434
1435	#if defined( __parallel )
1436	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1437	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1438	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1439	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1440
1441	#else
1442	volume_flow_initial = volume_flow_initial_l
1443	volume_flow_area = volume_flow_area_l
1444	#endif
1445
1446	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1447
1448	volume_flow_initial_l = 0.0
1449	volume_flow_area_l = 0.0
1450
1451	IF ( nxr == nx ) THEN
1452	DO j = nys, nyn
1453	DO k = nzb_2d(j,nx)+1, nzt
1454	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1455	hom_sum(k,1,0) * dzw(k)
1456	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1457	ENDDO
1458	ENDDO
1459	ENDIF
1460
1461	IF ( nyn == ny ) THEN
1462	DO i = nxl, nxr
1463	DO k = nzb_2d(ny,i)+1, nzt
1464	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1465	hom_sum(k,2,0) * dzw(k)
1466	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1467	ENDDO
1468	ENDDO
1469	ENDIF
1470
1471	#if defined( __parallel )
1472	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1473	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1474	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1475	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1476
1477	#else
1478	volume_flow_initial = volume_flow_initial_l
1479	volume_flow_area = volume_flow_area_l
1480	#endif
1481
1482	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1483
1484	volume_flow_initial_l = 0.0
1485	volume_flow_area_l = 0.0
1486
1487	IF ( nxr == nx ) THEN
1488	DO j = nys, nyn
1489	DO k = nzb_2d(j,nx)+1, nzt
1490	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1491	u(k,j,nx) * dzw(k)
1492	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1493	ENDDO
1494	ENDDO
1495	ENDIF
1496
1497	IF ( nyn == ny ) THEN
1498	DO i = nxl, nxr
1499	DO k = nzb_2d(ny,i)+1, nzt
1500	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1501	v(k,ny,i) * dzw(k)
1502	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1503	ENDDO
1504	ENDDO
1505	ENDIF
1506
1507	#if defined( __parallel )
1508	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1509	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1510	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1511	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1512
1513	#else
1514	volume_flow_initial = volume_flow_initial_l
1515	volume_flow_area = volume_flow_area_l
1516	#endif
1517
1518	ENDIF
1519
1520	!
1521	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1522	!-- from u\|v_bulk instead
1523	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1524	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1525	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1526	ENDIF
1527
1528	ENDIF
1529
1530	!
1531	!-- Initialize quantities for special advections schemes
1532	CALL init_advec
1533
1534	!
1535	!-- Impose random perturbation on the horizontal velocity field and then
1536	!-- remove the divergences from the velocity field at the initial stage
1537	IF ( create_disturbances .AND. &
1538	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1539	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1540
1541	CALL disturb_field( nzb_u_inner, tend, u )
1542	CALL disturb_field( nzb_v_inner, tend, v )
1543	n_sor = nsor_ini
1544	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1545	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1546	!$acc copyin( weight_pres, weight_substep ) &
1547	!$acc copy( tri, tric, u, v, w )
1548	CALL pres
1549	!$acc end data
1550	n_sor = nsor
1551	ENDIF
1552
1553	!
1554	!-- Initialization of the leaf area density
1555	IF ( plant_canopy ) THEN
1556
1557	SELECT CASE ( TRIM( canopy_mode ) )
1558
1559	CASE( 'block' )
1560
1561	DO i = nxlg, nxrg
1562	DO j = nysg, nyng
1563	lad_s(:,j,i) = lad(:)
1564	cdc(:,j,i) = drag_coefficient
1565	IF ( passive_scalar ) THEN
1566	sls(:,j,i) = leaf_surface_concentration
1567	sec(:,j,i) = scalar_exchange_coefficient
1568	ENDIF
1569	ENDDO
1570	ENDDO
1571
1572	CASE DEFAULT
1573
1574	!
1575	!-- The DEFAULT case is reached either if the parameter
1576	!-- canopy mode contains a wrong character string or if the
1577	!-- user has coded a special case in the user interface.
1578	!-- There, the subroutine user_init_plant_canopy checks
1579	!-- which of these two conditions applies.
1580	CALL user_init_plant_canopy
1581
1582	END SELECT
1583
1584	CALL exchange_horiz( lad_s, nbgp )
1585	CALL exchange_horiz( cdc, nbgp )
1586
1587	IF ( passive_scalar ) THEN
1588	CALL exchange_horiz( sls, nbgp )
1589	CALL exchange_horiz( sec, nbgp )
1590	ENDIF
1591
1592	!
1593	!-- Sharp boundaries of the plant canopy in horizontal directions
1594	!-- In vertical direction the interpolation is retained, as the leaf
1595	!-- area density is initialised by prescribing a vertical profile
1596	!-- consisting of piecewise linear segments. The upper boundary
1597	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1598
1599	DO i = nxl, nxr
1600	DO j = nys, nyn
1601	DO k = nzb, nzt+1
1602	IF ( lad_s(k,j,i) > 0.0 ) THEN
1603	lad_u(k,j,i) = lad_s(k,j,i)
1604	lad_u(k,j,i+1) = lad_s(k,j,i)
1605	lad_v(k,j,i) = lad_s(k,j,i)
1606	lad_v(k,j+1,i) = lad_s(k,j,i)
1607	ENDIF
1608	ENDDO
1609	DO k = nzb, nzt
1610	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1611	ENDDO
1612	ENDDO
1613	ENDDO
1614
1615	lad_w(pch_index,:,:) = 0.0
1616	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1617
1618	CALL exchange_horiz( lad_u, nbgp )
1619	CALL exchange_horiz( lad_v, nbgp )
1620	CALL exchange_horiz( lad_w, nbgp )
1621
1622	!
1623	!-- Initialisation of the canopy heat source distribution
1624	IF ( cthf /= 0.0 ) THEN
1625	!
1626	!-- Piecewise evaluation of the leaf area index by
1627	!-- integration of the leaf area density
1628	lai(:,:,:) = 0.0
1629	DO i = nxlg, nxrg
1630	DO j = nysg, nyng
1631	DO k = pch_index-1, 0, -1
1632	lai(k,j,i) = lai(k+1,j,i) + &
1633	( 0.5 * ( lad_w(k+1,j,i) + &
1634	lad_s(k+1,j,i) ) * &
1635	( zw(k+1) - zu(k+1) ) ) + &
1636	( 0.5 * ( lad_w(k,j,i) + &
1637	lad_s(k+1,j,i) ) * &
1638	( zu(k+1) - zw(k) ) )
1639	ENDDO
1640	ENDDO
1641	ENDDO
1642
1643	!
1644	!-- Evaluation of the upward kinematic vertical heat flux within the
1645	!-- canopy
1646	DO i = nxlg, nxrg
1647	DO j = nysg, nyng
1648	DO k = 0, pch_index
1649	canopy_heat_flux(k,j,i) = cthf * &
1650	exp( -0.6 * lai(k,j,i) )
1651	ENDDO
1652	ENDDO
1653	ENDDO
1654
1655	!
1656	!-- The near surface heat flux is derived from the heat flux
1657	!-- distribution within the canopy
1658	shf(:,:) = canopy_heat_flux(0,:,:)
1659
1660	ENDIF
1661
1662	ENDIF
1663
1664	!
1665	!-- If required, initialize dvrp-software
1666	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
1667
1668	IF ( ocean ) THEN
1669	!
1670	!-- Initialize quantities needed for the ocean model
1671	CALL init_ocean
1672
1673	ELSE
1674	!
1675	!-- Initialize quantities for handling cloud physics
1676	!-- This routine must be called before lpm_init, because
1677	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1678	!-- lpm_init) is not defined.
1679	CALL init_cloud_physics
1680	ENDIF
1681
1682	!
1683	!-- If required, initialize particles
1684	IF ( particle_advection ) CALL lpm_init
1685
1686	!
1687	!-- Initialize the ws-scheme.
1688	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1689
1690	!
1691	!-- Setting weighting factors for calculation of perturbation pressure
1692	!-- and turbulent quantities from the RK substeps
1693	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1694
1695	weight_substep(1) = 1./6.
1696	weight_substep(2) = 3./10.
1697	weight_substep(3) = 8./15.
1698
1699	weight_pres(1) = 1./3.
1700	weight_pres(2) = 5./12.
1701	weight_pres(3) = 1./4.
1702
1703	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1704
1705	weight_substep(1) = 1./2.
1706	weight_substep(2) = 1./2.
1707
1708	weight_pres(1) = 1./2.
1709	weight_pres(2) = 1./2.
1710
1711	ELSE ! for Euler-method
1712
1713	weight_substep(1) = 1.0
1714	weight_pres(1) = 1.0
1715
1716	ENDIF
1717
1718	!
1719	!-- Initialize Rayleigh damping factors
1720	rdf = 0.0
1721	rdf_sc = 0.0
1722	IF ( rayleigh_damping_factor /= 0.0 ) THEN
1723	IF ( .NOT. ocean ) THEN
1724	DO k = nzb+1, nzt
1725	IF ( zu(k) >= rayleigh_damping_height ) THEN
1726	rdf(k) = rayleigh_damping_factor * &
1727	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
1728	/ ( zu(nzt) - rayleigh_damping_height ) )&
1729	)**2
1730	ENDIF
1731	ENDDO
1732	ELSE
1733	DO k = nzt, nzb+1, -1
1734	IF ( zu(k) <= rayleigh_damping_height ) THEN
1735	rdf(k) = rayleigh_damping_factor * &
1736	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
1737	/ ( rayleigh_damping_height - zu(nzb+1)))&
1738	)**2
1739	ENDIF
1740	ENDDO
1741	ENDIF
1742	ENDIF
1743	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1744
1745	!
1746	!-- Initialize the starting level and the vertical smoothing factor used for
1747	!-- the external pressure gradient
1748	dp_smooth_factor = 1.0
1749	IF ( dp_external ) THEN
1750	!
1751	!-- Set the starting level dp_level_ind_b only if it has not been set before
1752	!-- (e.g. in init_grid).
1753	IF ( dp_level_ind_b == 0 ) THEN
1754	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1755	dp_level_ind_b = ind_array(1) - 1 + nzb
1756	! MINLOC uses lower array bound 1
1757	ENDIF
1758	IF ( dp_smooth ) THEN
1759	dp_smooth_factor(:dp_level_ind_b) = 0.0
1760	DO k = dp_level_ind_b+1, nzt
1761	dp_smooth_factor(k) = 0.5 * ( 1.0 + SIN( pi * &
1762	( REAL( k - dp_level_ind_b ) / &
1763	REAL( nzt - dp_level_ind_b ) - 0.5 ) ) )
1764	ENDDO
1765	ENDIF
1766	ENDIF
1767
1768	!
1769	!-- Initialize damping zone for the potential temperature in case of
1770	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1771	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1772	ptdf_x = 0.0
1773	ptdf_y = 0.0
1774	IF ( bc_lr_dirrad ) THEN
1775	DO i = nxl, nxr
1776	IF ( ( i * dx ) < pt_damping_width ) THEN
1777	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5 * &
1778	REAL( pt_damping_width - i * dx ) / ( &
1779	REAL( pt_damping_width ) ) ) )**2
1780	ENDIF
1781	ENDDO
1782	ELSEIF ( bc_lr_raddir ) THEN
1783	DO i = nxl, nxr
1784	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1785	ptdf_x(i) = pt_damping_factor * &
1786	SIN( pi * 0.5 * ( ( i - nx ) * dx + pt_damping_width ) / &
1787	REAL( pt_damping_width ) )**2
1788	ENDIF
1789	ENDDO
1790	ELSEIF ( bc_ns_dirrad ) THEN
1791	DO j = nys, nyn
1792	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1793	ptdf_y(j) = pt_damping_factor * &
1794	SIN( pi * 0.5 * ( ( j - ny ) * dy + pt_damping_width ) / &
1795	REAL( pt_damping_width ) )**2
1796	ENDIF
1797	ENDDO
1798	ELSEIF ( bc_ns_raddir ) THEN
1799	DO j = nys, nyn
1800	IF ( ( j * dy ) < pt_damping_width ) THEN
1801	ptdf_y(j) = pt_damping_factor * &
1802	SIN( pi * 0.5 * ( pt_damping_width - j * dy ) / &
1803	REAL( pt_damping_width ) )**2
1804	ENDIF
1805	ENDDO
1806	ENDIF
1807
1808	!
1809	!-- Initialize local summation arrays for routine flow_statistics.
1810	!-- This is necessary because they may not yet have been initialized when they
1811	!-- are called from flow_statistics (or - depending on the chosen model run -
1812	!-- are never initialized)
1813	sums_divnew_l = 0.0
1814	sums_divold_l = 0.0
1815	sums_l_l = 0.0
1816	sums_up_fraction_l = 0.0
1817	sums_wsts_bc_l = 0.0
1818
1819	!
1820	!-- Pre-set masks for regional statistics. Default is the total model domain.
1821	!-- Ghost points are excluded because counting values at the ghost boundaries
1822	!-- would bias the statistics
1823	rmask = 1.0
1824	rmask(:,nxlg:nxl-1,:) = 0.0; rmask(:,nxr+1:nxrg,:) = 0.0
1825	rmask(nysg:nys-1,:,:) = 0.0; rmask(nyn+1:nyng,:,:) = 0.0
1826
1827	!
1828	!-- User-defined initializing actions. Check afterwards, if maximum number
1829	!-- of allowed timeseries is exceeded
1830	CALL user_init
1831
1832	IF ( dots_num > dots_max ) THEN
1833	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1834	' its maximum of dots_max = ', dots_max, &
1835	' &Please increase dots_max in modules.f90.'
1836	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1837	ENDIF
1838
1839	!
1840	!-- Input binary data file is not needed anymore. This line must be placed
1841	!-- after call of user_init!
1842	CALL close_file( 13 )
1843
1844	!
1845	!-- Compute total sum of active mask grid points
1846	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1847	!-- total domain
1848	!-- ngp_3d: number of grid points of the total domain
1849	ngp_2dh_outer_l = 0
1850	ngp_2dh_outer = 0
1851	ngp_2dh_s_inner_l = 0
1852	ngp_2dh_s_inner = 0
1853	ngp_2dh_l = 0
1854	ngp_2dh = 0
1855	ngp_3d_inner_l = 0.0
1856	ngp_3d_inner = 0
1857	ngp_3d = 0
1858	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1859
1860	DO sr = 0, statistic_regions
1861	DO i = nxl, nxr
1862	DO j = nys, nyn
1863	IF ( rmask(j,i,sr) == 1.0 ) THEN
1864	!
1865	!-- All xy-grid points
1866	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1867	!
1868	!-- xy-grid points above topography
1869	DO k = nzb_s_outer(j,i), nz + 1
1870	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1871	ENDDO
1872	DO k = nzb_s_inner(j,i), nz + 1
1873	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1874	ENDDO
1875	!
1876	!-- All grid points of the total domain above topography
1877	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1878	( nz - nzb_s_inner(j,i) + 2 )
1879	ENDIF
1880	ENDDO
1881	ENDDO
1882	ENDDO
1883
1884	sr = statistic_regions + 1
1885	#if defined( __parallel )
1886	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1887	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1888	comm2d, ierr )
1889	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1890	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1891	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1892	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1893	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1894	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1895	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1896	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1897	MPI_SUM, comm2d, ierr )
1898	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1899	#else
1900	ngp_2dh = ngp_2dh_l
1901	ngp_2dh_outer = ngp_2dh_outer_l
1902	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1903	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1904	#endif
1905
1906	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1907	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1908
1909	!
1910	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1911	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1912	!-- the respective subdomain lie below the surface topography
1913	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1914	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1915	ngp_3d_inner(:) )
1916	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1917
1918	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1919
1920
1921	END SUBROUTINE init_3d_model

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