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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1299

Last change on this file since 1299 was 1299, checked in by heinze, 11 years ago
enable usage of large_scale subsidence in combination with large_scale_forcing
Property svn:keywords set to `Id`
File size: 66.6 KB

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

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