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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1238

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

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