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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1239

Last change on this file since 1239 was 1239, checked in by heinze, 10 years ago
routines for nudging and large scale forcing from external file added
Property svn:keywords set to `Id`
File size: 66.5 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	! Overwrite initial profiles in case of nudging
26	! Inititialize shf and qsws in case of large_scale_forcing
27	!
28	! Former revisions:
29	! -----------------
30	! $Id: init_3d_model.f90 1239 2013-10-29 10:11:53Z heinze $
31	!
32	! 1221 2013-09-10 08:59:13Z raasch
33	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
34	! copy
35	!
36	! 1212 2013-08-15 08:46:27Z raasch
37	! array tri is allocated and included in data copy statement
38	!
39	! 1195 2013-07-01 12:27:57Z heinze
40	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
41	!
42	! 1179 2013-06-14 05:57:58Z raasch
43	! allocate and set ref_state to be used in buoyancy terms
44	!
45	! 1171 2013-05-30 11:27:45Z raasch
46	! diss array is allocated with full size if accelerator boards are used
47	!
48	! 1159 2013-05-21 11:58:22Z fricke
49	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
50	!
51	! 1153 2013-05-10 14:33:08Z raasch
52	! diss array is allocated with dummy elements even if it is not needed
53	! (required by PGI 13.4 / CUDA 5.0)
54	!
55	! 1115 2013-03-26 18:16:16Z hoffmann
56	! unused variables removed
57	!
58	! 1113 2013-03-10 02:48:14Z raasch
59	! openACC directive modified
60	!
61	! 1111 2013-03-08 23:54:10Z raasch
62	! openACC directives added for pres
63	! array diss allocated only if required
64	!
65	! 1092 2013-02-02 11:24:22Z raasch
66	! unused variables removed
67	!
68	! 1065 2012-11-22 17:42:36Z hoffmann
69	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
70	!
71	! 1053 2012-11-13 17:11:03Z hoffmann
72	! allocation and initialisation of necessary data arrays for the two-moment
73	! cloud physics scheme the two new prognostic equations (nr, qr):
74	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
75	! +tend_*, prr
76	!
77	! 1036 2012-10-22 13:43:42Z raasch
78	! code put under GPL (PALM 3.9)
79	!
80	! 1032 2012-10-21 13:03:21Z letzel
81	! save memory by not allocating pt_2 in case of neutral = .T.
82	!
83	! 1025 2012-10-07 16:04:41Z letzel
84	! bugfix: swap indices of mask for ghost boundaries
85	!
86	! 1015 2012-09-27 09:23:24Z raasch
87	! mask is set to zero for ghost boundaries
88	!
89	! 1010 2012-09-20 07:59:54Z raasch
90	! cpp switch __nopointer added for pointer free version
91	!
92	! 1003 2012-09-14 14:35:53Z raasch
93	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
94	!
95	! 1001 2012-09-13 14:08:46Z raasch
96	! all actions concerning leapfrog scheme removed
97	!
98	! 996 2012-09-07 10:41:47Z raasch
99	! little reformatting
100	!
101	! 978 2012-08-09 08:28:32Z fricke
102	! outflow damping layer removed
103	! roughness length for scalar quantites z0h added
104	! damping zone for the potential temperatur in case of non-cyclic lateral
105	! boundaries added
106	! initialization of ptdf_x, ptdf_y
107	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
108	!
109	! 849 2012-03-15 10:35:09Z raasch
110	! init_particles renamed lpm_init
111	!
112	! 825 2012-02-19 03:03:44Z raasch
113	! wang_collision_kernel renamed wang_kernel
114	!
115	! 790 2011-11-29 03:11:20Z raasch
116	! diss is also allocated in case that the Wang kernel is used
117	!
118	! 787 2011-11-28 12:49:05Z heinze $
119	! bugfix: call init_advec in every case - not only for inital runs
120	!
121	! 785 2011-11-28 09:47:19Z raasch
122	! initialization of rdf_sc
123	!
124	! 767 2011-10-14 06:39:12Z raasch
125	! adjustments concerning implementation of prescribed u,v-profiles
126	! bugfix: dirichlet_0 conditions for ug/vg moved to check_parameters
127	!
128	! 759 2011-09-15 13:58:31Z raasch
129	! Splitting of parallel I/O in blocks of PEs
130	! Bugfix: No zero assignments to volume_flow_initial and volume_flow_area in
131	! case of normal restart runs.
132	!
133	! 713 2011-03-30 14:21:21Z suehring
134	! weight_substep and weight_pres are given as fractions.
135	!
136	! 709 2011-03-30 09:31:40Z raasch
137	! formatting adjustments
138	!
139	! 707 2011-03-29 11:39:40Z raasch
140	! p_sub renamed p_loc and allocated depending on the chosen pressure solver,
141	! initial assignments of zero to array p for iterative solvers only,
142	! bc_lr/ns replaced by bc_lr/ns_dirrad/raddir
143	!
144	! 680 2011-02-04 23:16:06Z gryschka
145	! bugfix: volume_flow_control
146	!
147	! 673 2011-01-18 16:19:48Z suehring
148	! weight_substep (moved from advec_ws) and weight_pres added.
149	! Allocate p_sub when using Multigrid or SOR solver.
150	! Call of ws_init moved behind the if requests.
151	!
152	! 667 2010-12-23 12:06:00Z suehring/gryschka
153	! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng in loops and
154	! allocation of arrays. Calls of exchange_horiz are modified.
155	! Call ws_init to initialize arrays needed for calculating statisticas and for
156	! optimization when ws-scheme is used.
157	! Initial volume flow is now calculated by using the variable hom_sum.
158	! Therefore the correction of initial volume flow for non-flat topography
159	! removed (removed u_nzb_p1_for_vfc and v_nzb_p1_for_vfc)
160	! Changed surface boundary conditions for u and v in case of ibc_uv_b == 0 from
161	! mirror to Dirichlet boundary conditions (u=v=0), so that k=nzb is
162	! representative for the height z0.
163	! Bugfix: type conversion of '1' to 64bit for the MAX function (ngp_3d_inner)
164	!
165	! 622 2010-12-10 08:08:13Z raasch
166	! optional barriers included in order to speed up collective operations
167	!
168	! 560 2010-09-09 10:06:09Z weinreis
169	! bugfix: correction of calculating ngp_3d for 64 bit
170	!
171	! 485 2010-02-05 10:57:51Z raasch
172	! calculation of ngp_3d + ngp_3d_inner changed because they have now 64 bit
173	!
174	! 407 2009-12-01 15:01:15Z maronga
175	! var_ts is replaced by dots_max
176	! Enabled passive scalar/humidity wall fluxes for non-flat topography
177	!
178	! 388 2009-09-23 09:40:33Z raasch
179	! Initialization of prho added.
180	! bugfix: correction of initial volume flow for non-flat topography
181	! bugfix: zero initialization of arrays within buildings for 'cyclic_fill'
182	! bugfix: avoid that ngp_2dh_s_inner becomes zero
183	! initializing_actions='read_data_for_recycling' renamed to 'cyclic_fill', now
184	! independent of turbulent_inflow
185	! Output of messages replaced by message handling routine.
186	! Set the starting level and the vertical smoothing factor used for
187	! the external pressure gradient
188	! +conserve_volume_flow_mode: 'default', 'initial_profiles', 'inflow_profile'
189	! and 'bulk_velocity'
190	! If the inversion height calculated by the prerun is zero,
191	! inflow_damping_height must be explicitly specified.
192	!
193	! 181 2008-07-30 07:07:47Z raasch
194	! bugfix: zero assignments to tendency arrays in case of restarts,
195	! further extensions and modifications in the initialisation of the plant
196	! canopy model,
197	! allocation of hom_sum moved to parin, initialization of spectrum_x\|y directly
198	! after allocating theses arrays,
199	! read data for recycling added as new initialization option,
200	! dummy allocation for diss
201	!
202	! 138 2007-11-28 10:03:58Z letzel
203	! New counter ngp_2dh_s_inner.
204	! Allow new case bc_uv_t = 'dirichlet_0' for channel flow.
205	! Corrected calculation of initial volume flow for 'set_1d-model_profiles' and
206	! 'set_constant_profiles' in case of buildings in the reference cross-sections.
207	!
208	! 108 2007-08-24 15:10:38Z letzel
209	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
210	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
211	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
212	! Rayleigh damping for ocean, optionally calculate km and kh from initial
213	! TKE e_init
214	!
215	! 97 2007-06-21 08:23:15Z raasch
216	! Initialization of salinity, call of init_ocean
217	!
218	! 87 2007-05-22 15:46:47Z raasch
219	! var_hom and var_sum renamed pr_palm
220	!
221	! 75 2007-03-22 09:54:05Z raasch
222	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
223	! bugfix for cases with the outflow damping layer extending over more than one
224	! subdomain, moisture renamed humidity,
225	! new initializing action "by_user" calls user_init_3d_model,
226	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
227	! initial velocities at nzb+1 are regarded for volume
228	! flow control in case they have been set zero before (to avoid small timesteps)
229	! -uvmean_outflow, uxrp, vynp eliminated
230	!
231	! 19 2007-02-23 04:53:48Z raasch
232	! +handling of top fluxes
233	!
234	! RCS Log replace by Id keyword, revision history cleaned up
235	!
236	! Revision 1.49 2006/08/22 15:59:07 raasch
237	! No optimization of this file on the ibmy (Yonsei Univ.)
238	!
239	! Revision 1.1 1998/03/09 16:22:22 raasch
240	! Initial revision
241	!
242	!
243	! Description:
244	! ------------
245	! Allocation of arrays and initialization of the 3D model via
246	! a) pre-run the 1D model
247	! or
248	! b) pre-set constant linear profiles
249	! or
250	! c) read values of a previous run
251	!------------------------------------------------------------------------------!
252
253	USE advec_ws
254	USE arrays_3d
255	USE averaging
256	USE cloud_parameters
257	USE constants
258	USE control_parameters
259	USE cpulog
260	USE grid_variables
261	USE indices
262	USE interfaces
263	USE ls_forcing_mod
264	USE model_1d
265	USE netcdf_control
266	USE particle_attributes
267	USE pegrid
268	USE profil_parameter
269	USE random_function_mod
270	USE statistics
271	USE transpose_indices
272
273	IMPLICIT NONE
274
275	INTEGER :: i, ind_array(1), j, k, sr
276
277	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l
278
279	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l, &
280	ngp_2dh_s_inner_l
281
282	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
283
284	REAL, DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l, ngp_3d_inner_tmp
285
286
287	!
288	!-- Allocate arrays
289	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
290	ngp_3d(0:statistic_regions), &
291	ngp_3d_inner(0:statistic_regions), &
292	ngp_3d_inner_l(0:statistic_regions), &
293	ngp_3d_inner_tmp(0:statistic_regions), &
294	sums_divnew_l(0:statistic_regions), &
295	sums_divold_l(0:statistic_regions) )
296	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
297	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
298	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
299	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
300	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
301	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
302	sums(nzb:nzt+1,pr_palm+max_pr_user), &
303	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
304	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
305	sums_up_fraction_l(10,3,0:statistic_regions), &
306	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
307	ts_value(dots_max,0:statistic_regions) )
308	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
309
310	ALLOCATE( rif(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
311	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
312	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
313	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
314	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
315	z0h(nysg:nyng,nxlg:nxrg) )
316
317	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
318	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
319	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
320	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
321	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
322
323	#if defined( __nopointer )
324	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
325	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
326	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
327	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
328	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
329	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
330	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
331	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
332	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
333	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
334	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
335	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
336	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
337	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
338	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
339	#else
340	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
341	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
342	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
343	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
344	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
345	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
346	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
347	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
348	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
349	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
350	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
351	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
352	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
353	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
354	IF ( .NOT. neutral ) THEN
355	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
356	ENDIF
357	#endif
358
359	!
360	!-- Following array is required for perturbation pressure within the iterative
361	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
362	!-- the weighted average of the substeps and cannot be used in the Poisson
363	!-- solver.
364	IF ( psolver == 'sor' ) THEN
365	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
366	ELSEIF ( psolver == 'multigrid' ) THEN
367	!
368	!-- For performance reasons, multigrid is using one ghost layer only
369	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
370	ENDIF
371
372	!
373	!-- Array for storing constant coeffficients of the tridiagonal solver
374	IF ( psolver == 'poisfft' ) THEN
375	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
376	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
377	ENDIF
378
379	IF ( humidity .OR. passive_scalar ) THEN
380	!
381	!-- 2D-humidity/scalar arrays
382	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
383	qsws(nysg:nyng,nxlg:nxrg), &
384	qswst(nysg:nyng,nxlg:nxrg) )
385
386	!
387	!-- 3D-humidity/scalar arrays
388	#if defined( __nopointer )
389	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
390	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
391	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
392	#else
393	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
394	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
395	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
396	#endif
397
398	!
399	!-- 3D-arrays needed for humidity only
400	IF ( humidity ) THEN
401	#if defined( __nopointer )
402	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
403	#else
404	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
405	#endif
406
407	IF ( cloud_physics ) THEN
408
409	!
410	!-- Liquid water content
411	#if defined( __nopointer )
412	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
413	#else
414	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
415	#endif
416	!
417	!-- Precipitation amount and rate (only needed if output is switched)
418	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
419	precipitation_rate(nysg:nyng,nxlg:nxrg) )
420
421	IF ( icloud_scheme == 0 ) THEN
422	!
423	!-- 1D-arrays
424	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
425	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
426	!
427	!-- 3D-cloud water content
428	#if defined( __nopointer )
429	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
430	#else
431	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
432	#endif
433	!
434	!-- 3D-tendency arrays
435	ALLOCATE( tend_pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
436	tend_q(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
437
438	IF ( precipitation ) THEN
439	!
440	!-- 1D-arrays
441	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
442	!
443	!
444	!-- 3D-tendency arrays
445	ALLOCATE( tend_nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
446	tend_qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
447	!
448	!-- 2D-rain water content and rain drop concentration arrays
449	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
450	qrsws(nysg:nyng,nxlg:nxrg), &
451	qrswst(nysg:nyng,nxlg:nxrg), &
452	nrs(nysg:nyng,nxlg:nxrg), &
453	nrsws(nysg:nyng,nxlg:nxrg), &
454	nrswst(nysg:nyng,nxlg:nxrg) )
455	!
456	!-- 3D-rain water content, rain drop concentration arrays
457	#if defined( __nopointer )
458	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
459	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
460	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
461	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
462	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
463	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
464	#else
465	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
466	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
467	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
468	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
469	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
470	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
471	#endif
472	!
473	!-- 3d-precipitation rate
474	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
475	ENDIF
476
477	ENDIF
478	ENDIF
479
480	IF ( cloud_droplets ) THEN
481	!
482	!-- Liquid water content, change in liquid water content
483	#if defined( __nopointer )
484	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
485	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
486	#else
487	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
488	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
489	#endif
490	!
491	!-- Real volume of particles (with weighting), volume of particles
492	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
493	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
494	ENDIF
495
496	ENDIF
497
498	ENDIF
499
500	IF ( ocean ) THEN
501	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
502	saswst(nysg:nyng,nxlg:nxrg) )
503	#if defined( __nopointer )
504	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
505	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
506	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
507	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
508	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
509	#else
510	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
511	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
512	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
513	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
514	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
515	prho => prho_1
516	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
517	! density to be apointer
518	#endif
519	IF ( humidity_remote ) THEN
520	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
521	qswst_remote = 0.0
522	ENDIF
523	ENDIF
524
525	!
526	!-- 3D-array for storing the dissipation, needed for calculating the sgs
527	!-- particle velocities
528	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence .OR. &
529	num_acc_per_node > 0 ) THEN
530	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
531	ENDIF
532
533	IF ( dt_dosp /= 9999999.9 ) THEN
534	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
535	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
536	spectrum_x = 0.0
537	spectrum_y = 0.0
538	ENDIF
539
540	!
541	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
542	IF ( plant_canopy ) THEN
543	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
544	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
545	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
546	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
547	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
548
549	IF ( passive_scalar ) THEN
550	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
551	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
552	ENDIF
553
554	IF ( cthf /= 0.0 ) THEN
555	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
556	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
557	ENDIF
558
559	ENDIF
560
561	!
562	!-- 4D-array for storing the Rif-values at vertical walls
563	IF ( topography /= 'flat' ) THEN
564	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
565	rif_wall = 0.0
566	ENDIF
567
568	!
569	!-- Arrays to store velocity data from t-dt and the phase speeds which
570	!-- are needed for radiation boundary conditions
571	IF ( outflow_l ) THEN
572	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
573	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
574	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
575	ENDIF
576	IF ( outflow_r ) THEN
577	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
578	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
579	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
580	ENDIF
581	IF ( outflow_l .OR. outflow_r ) THEN
582	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
583	c_w(nzb:nzt+1,nysg:nyng) )
584	ENDIF
585	IF ( outflow_s ) THEN
586	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
587	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
588	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
589	ENDIF
590	IF ( outflow_n ) THEN
591	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
592	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
593	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
594	ENDIF
595	IF ( outflow_s .OR. outflow_n ) THEN
596	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
597	c_w(nzb:nzt+1,nxlg:nxrg) )
598	ENDIF
599	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
600	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
601	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
602	ENDIF
603
604
605	#if ! defined( __nopointer )
606	!
607	!-- Initial assignment of the pointers
608	e => e_1; e_p => e_2; te_m => e_3
609	IF ( .NOT. neutral ) THEN
610	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
611	ELSE
612	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
613	ENDIF
614	u => u_1; u_p => u_2; tu_m => u_3
615	v => v_1; v_p => v_2; tv_m => v_3
616	w => w_1; w_p => w_2; tw_m => w_3
617
618	IF ( humidity .OR. passive_scalar ) THEN
619	q => q_1; q_p => q_2; tq_m => q_3
620	IF ( humidity ) THEN
621	vpt => vpt_1
622	IF ( cloud_physics ) THEN
623	ql => ql_1
624	IF ( icloud_scheme == 0 ) THEN
625	qc => qc_1
626	IF ( precipitation ) THEN
627	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
628	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
629	ENDIF
630	ENDIF
631	ENDIF
632	ENDIF
633	IF ( cloud_droplets ) THEN
634	ql => ql_1
635	ql_c => ql_2
636	ENDIF
637	ENDIF
638
639	IF ( ocean ) THEN
640	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
641	ENDIF
642	#endif
643
644	!
645	!-- Allocate arrays containing the RK coefficient for calculation of
646	!-- perturbation pressure and turbulent fluxes. At this point values are
647	!-- set for pressure calculation during initialization (where no timestep
648	!-- is done). Further below the values needed within the timestep scheme
649	!-- will be set.
650	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
651	weight_pres(1:intermediate_timestep_count_max) )
652	weight_substep = 1.0
653	weight_pres = 1.0
654	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
655
656	!
657	!-- Initialize model variables
658	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
659	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
660	!
661	!-- First model run of a possible job queue.
662	!-- Initial profiles of the variables must be computes.
663	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
664	!
665	!-- Use solutions of the 1D model as initial profiles,
666	!-- start 1D model
667	CALL init_1d_model
668	!
669	!-- Transfer initial profiles to the arrays of the 3D model
670	DO i = nxlg, nxrg
671	DO j = nysg, nyng
672	e(:,j,i) = e1d
673	kh(:,j,i) = kh1d
674	km(:,j,i) = km1d
675	pt(:,j,i) = pt_init
676	u(:,j,i) = u1d
677	v(:,j,i) = v1d
678	ENDDO
679	ENDDO
680
681	IF ( humidity .OR. passive_scalar ) THEN
682	DO i = nxlg, nxrg
683	DO j = nysg, nyng
684	q(:,j,i) = q_init
685	ENDDO
686	ENDDO
687	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
688	precipitation ) THEN
689	DO i = nxlg, nxrg
690	DO j = nysg, nyng
691	qr(:,j,i) = 0.0
692	nr(:,j,i) = 0.0
693	ENDDO
694	ENDDO
695	!
696	!-- Initialze nc_1d with default value
697	nc_1d(:) = nc_const
698
699	ENDIF
700	ENDIF
701
702	IF ( .NOT. constant_diffusion ) THEN
703	DO i = nxlg, nxrg
704	DO j = nysg, nyng
705	e(:,j,i) = e1d
706	ENDDO
707	ENDDO
708	!
709	!-- Store initial profiles for output purposes etc.
710	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
711
712	IF ( prandtl_layer ) THEN
713	rif = rif1d(nzb+1)
714	ts = 0.0 ! could actually be computed more accurately in the
715	! 1D model. Update when opportunity arises.
716	us = us1d
717	usws = usws1d
718	vsws = vsws1d
719	ELSE
720	ts = 0.0 ! must be set, because used in
721	rif = 0.0 ! flowste
722	us = 0.0
723	usws = 0.0
724	vsws = 0.0
725	ENDIF
726
727	ELSE
728	e = 0.0 ! must be set, because used in
729	rif = 0.0 ! flowste
730	ts = 0.0
731	us = 0.0
732	usws = 0.0
733	vsws = 0.0
734	ENDIF
735	uswst = top_momentumflux_u
736	vswst = top_momentumflux_v
737
738	!
739	!-- In every case qs = 0.0 (see also pt)
740	!-- This could actually be computed more accurately in the 1D model.
741	!-- Update when opportunity arises!
742	IF ( humidity .OR. passive_scalar ) THEN
743	qs = 0.0
744	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
745	precipitation ) THEN
746	qrs = 0.0
747	nrs = 0.0
748	ENDIF
749	ENDIF
750
751	!
752	!-- inside buildings set velocities back to zero
753	IF ( topography /= 'flat' ) THEN
754	DO i = nxl-1, nxr+1
755	DO j = nys-1, nyn+1
756	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
757	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
758	ENDDO
759	ENDDO
760
761	!
762	!-- WARNING: The extra boundary conditions set after running the
763	!-- ------- 1D model impose an error on the divergence one layer
764	!-- below the topography; need to correct later
765	!-- ATTENTION: Provisional correction for Piacsek & Williams
766	!-- --------- advection scheme: keep u and v zero one layer below
767	!-- the topography.
768	IF ( ibc_uv_b == 1 ) THEN
769	!
770	!-- Neumann condition
771	DO i = nxl-1, nxr+1
772	DO j = nys-1, nyn+1
773	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
774	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
775	ENDDO
776	ENDDO
777
778	ENDIF
779
780	ENDIF
781
782	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
783	THEN
784
785	!
786	!-- Overwrite initial profiles in case of nudging
787	IF ( nudging ) THEN
788	pt_init = ptnudge(:,1)
789	u_init = unudge(:,1)
790	v_init = vnudge(:,1)
791	IF ( humidity .OR. passive_scalar ) THEN
792	q_init = qnudge(:,1)
793	ENDIF
794
795	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
796	'scalars from NUDGING_DATA are used.'
797	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
798	ENDIF
799
800	!
801	!-- Use constructed initial profiles (velocity constant with height,
802	!-- temperature profile with constant gradient)
803	DO i = nxlg, nxrg
804	DO j = nysg, nyng
805	pt(:,j,i) = pt_init
806	u(:,j,i) = u_init
807	v(:,j,i) = v_init
808	ENDDO
809	ENDDO
810
811	!
812	!-- Set initial horizontal velocities at the lowest computational grid
813	!-- levels to zero in order to avoid too small time steps caused by the
814	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
815	!-- in the limiting formula!). The original values are stored to be later
816	!-- used for volume flow control.
817	DO i = nxlg, nxrg
818	DO j = nysg, nyng
819	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
820	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
821	ENDDO
822	ENDDO
823
824	IF ( humidity .OR. passive_scalar ) THEN
825	DO i = nxlg, nxrg
826	DO j = nysg, nyng
827	q(:,j,i) = q_init
828	ENDDO
829	ENDDO
830	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
831	!
832	!-- Initialze nc_1d with default value
833	nc_1d(:) = nc_const
834
835	IF ( precipitation ) THEN
836	DO i = nxlg, nxrg
837	DO j = nysg, nyng
838	qr(:,j,i) = 0.0
839	nr(:,j,i) = 0.0
840	ENDDO
841	ENDDO
842	ENDIF
843
844	ENDIF
845	ENDIF
846
847	IF ( ocean ) THEN
848	DO i = nxlg, nxrg
849	DO j = nysg, nyng
850	sa(:,j,i) = sa_init
851	ENDDO
852	ENDDO
853	ENDIF
854
855	IF ( constant_diffusion ) THEN
856	km = km_constant
857	kh = km / prandtl_number
858	e = 0.0
859	ELSEIF ( e_init > 0.0 ) THEN
860	DO k = nzb+1, nzt
861	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
862	ENDDO
863	km(nzb,:,:) = km(nzb+1,:,:)
864	km(nzt+1,:,:) = km(nzt,:,:)
865	kh = km / prandtl_number
866	e = e_init
867	ELSE
868	IF ( .NOT. ocean ) THEN
869	kh = 0.01 ! there must exist an initial diffusion, because
870	km = 0.01 ! otherwise no TKE would be produced by the
871	! production terms, as long as not yet
872	! e = (u/cm)*2 at k=nzb+1
873	ELSE
874	kh = 0.00001
875	km = 0.00001
876	ENDIF
877	e = 0.0
878	ENDIF
879	rif = 0.0
880	ts = 0.0
881	us = 0.0
882	usws = 0.0
883	uswst = top_momentumflux_u
884	vsws = 0.0
885	vswst = top_momentumflux_v
886	IF ( humidity .OR. passive_scalar ) qs = 0.0
887
888	!
889	!-- Compute initial temperature field and other constants used in case
890	!-- of a sloping surface
891	IF ( sloping_surface ) CALL init_slope
892
893	IF(myid==0) THEN
894	PRINT*,"initial profiles from init_3d_model"
895	DO k=nzb, nzt+1
896	PRINT*, k, u(k,0,0), v(k,0,0), pt(k,0,0), q(k,0,0)
897	ENDDO
898	ENDIF
899
900	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
901	THEN
902	!
903	!-- Initialization will completely be done by the user
904	CALL user_init_3d_model
905
906	ENDIF
907	!
908	!-- Bottom boundary
909	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
910	u(nzb,:,:) = 0.0
911	v(nzb,:,:) = 0.0
912	ENDIF
913
914	!
915	!-- Apply channel flow boundary condition
916	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
917	u(nzt+1,:,:) = 0.0
918	v(nzt+1,:,:) = 0.0
919	ENDIF
920
921	!
922	!-- Calculate virtual potential temperature
923	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
924
925	!
926	!-- Store initial profiles for output purposes etc.
927	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
928	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
929	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
930	hom(nzb,1,5,:) = 0.0
931	hom(nzb,1,6,:) = 0.0
932	ENDIF
933	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
934	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
935	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
936
937	IF ( ocean ) THEN
938	!
939	!-- Store initial salinity profile
940	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
941	ENDIF
942
943	IF ( humidity ) THEN
944	!
945	!-- Store initial profile of total water content, virtual potential
946	!-- temperature
947	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
948	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
949	IF ( cloud_physics .OR. cloud_droplets ) THEN
950	!
951	!-- Store initial profile of specific humidity and potential
952	!-- temperature
953	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
954	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
955	ENDIF
956	ENDIF
957
958	IF ( passive_scalar ) THEN
959	!
960	!-- Store initial scalar profile
961	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
962	ENDIF
963
964	!
965	!-- Initialize fluxes at bottom surface
966	IF ( use_surface_fluxes ) THEN
967
968	IF ( constant_heatflux ) THEN
969	!
970	!-- Heat flux is prescribed
971	IF ( random_heatflux ) THEN
972	CALL disturb_heatflux
973	ELSE
974	shf = surface_heatflux
975	!
976	!-- Initialize shf with data from external file LSF_DATA
977	IF ( large_scale_forcing .AND. lsf_surf ) THEN
978	CALL ls_forcing_surf ( simulated_time )
979	ENDIF
980
981	!
982	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
983	IF ( TRIM( topography ) /= 'flat' ) THEN
984	DO i = nxlg, nxrg
985	DO j = nysg, nyng
986	IF ( nzb_s_inner(j,i) /= 0 ) THEN
987	shf(j,i) = wall_heatflux(0)
988	ENDIF
989	ENDDO
990	ENDDO
991	ENDIF
992	ENDIF
993	ENDIF
994
995	!
996	!-- Determine the near-surface water flux
997	IF ( humidity .OR. passive_scalar ) THEN
998	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
999	precipitation ) THEN
1000	qrsws = 0.0
1001	nrsws = 0.0
1002	ENDIF
1003	IF ( constant_waterflux ) THEN
1004	qsws = surface_waterflux
1005	!
1006	!-- Over topography surface_waterflux is replaced by
1007	!-- wall_humidityflux(0)
1008	IF ( TRIM( topography ) /= 'flat' ) THEN
1009	wall_qflux = wall_humidityflux
1010	DO i = nxlg, nxrg
1011	DO j = nysg, nyng
1012	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1013	qsws(j,i) = wall_qflux(0)
1014	ENDIF
1015	ENDDO
1016	ENDDO
1017	ENDIF
1018	ENDIF
1019	ENDIF
1020
1021	ENDIF
1022
1023	!
1024	!-- Initialize fluxes at top surface
1025	!-- Currently, only the heatflux and salinity flux can be prescribed.
1026	!-- The latent flux is zero in this case!
1027	IF ( use_top_fluxes ) THEN
1028
1029	IF ( constant_top_heatflux ) THEN
1030	!
1031	!-- Heat flux is prescribed
1032	tswst = top_heatflux
1033
1034	IF ( humidity .OR. passive_scalar ) THEN
1035	qswst = 0.0
1036	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1037	precipitation ) THEN
1038	nrswst = 0.0
1039	qrswst = 0.0
1040	ENDIF
1041	ENDIF
1042
1043	IF ( ocean ) THEN
1044	saswsb = bottom_salinityflux
1045	saswst = top_salinityflux
1046	ENDIF
1047	ENDIF
1048
1049	!
1050	!-- Initialization in case of a coupled model run
1051	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1052	tswst = 0.0
1053	ENDIF
1054
1055	ENDIF
1056
1057	!
1058	!-- Initialize Prandtl layer quantities
1059	IF ( prandtl_layer ) THEN
1060
1061	z0 = roughness_length
1062	z0h = z0h_factor * z0
1063
1064	IF ( .NOT. constant_heatflux ) THEN
1065	!
1066	!-- Surface temperature is prescribed. Here the heat flux cannot be
1067	!-- simply estimated, because therefore rif, u* and theta* would have
1068	!-- to be computed by iteration. This is why the heat flux is assumed
1069	!-- to be zero before the first time step. It approaches its correct
1070	!-- value in the course of the first few time steps.
1071	shf = 0.0
1072	ENDIF
1073
1074	IF ( humidity .OR. passive_scalar ) THEN
1075	IF ( .NOT. constant_waterflux ) qsws = 0.0
1076	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1077	precipitation ) THEN
1078	qrsws = 0.0
1079	nrsws = 0.0
1080	ENDIF
1081	ENDIF
1082
1083	ENDIF
1084
1085	!
1086	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1087	!-- the reference state will be set (overwritten) in init_ocean)
1088	IF ( use_single_reference_value ) THEN
1089	IF ( .NOT. humidity ) THEN
1090	ref_state(:) = pt_reference
1091	ELSE
1092	ref_state(:) = vpt_reference
1093	ENDIF
1094	ELSE
1095	IF ( .NOT. humidity ) THEN
1096	ref_state(:) = pt_init(:)
1097	ELSE
1098	ref_state(:) = vpt(:,nys,nxl)
1099	ENDIF
1100	ENDIF
1101
1102	!
1103	!-- For the moment, vertical velocity is zero
1104	w = 0.0
1105
1106	!
1107	!-- Initialize array sums (must be defined in first call of pres)
1108	sums = 0.0
1109
1110	!
1111	!-- In case of iterative solvers, p must get an initial value
1112	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0
1113
1114	!
1115	!-- Treating cloud physics, liquid water content and precipitation amount
1116	!-- are zero at beginning of the simulation
1117	IF ( cloud_physics ) THEN
1118	ql = 0.0
1119	IF ( precipitation ) precipitation_amount = 0.0
1120	IF ( icloud_scheme == 0 ) THEN
1121	qc = 0.0
1122	nc_1d = nc_const
1123	ENDIF
1124	ENDIF
1125	!
1126	!-- Impose vortex with vertical axis on the initial velocity profile
1127	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1128	CALL init_rankine
1129	ENDIF
1130
1131	!
1132	!-- Impose temperature anomaly (advection test only)
1133	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1134	CALL init_pt_anomaly
1135	ENDIF
1136
1137	!
1138	!-- If required, change the surface temperature at the start of the 3D run
1139	IF ( pt_surface_initial_change /= 0.0 ) THEN
1140	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1141	ENDIF
1142
1143	!
1144	!-- If required, change the surface humidity/scalar at the start of the 3D
1145	!-- run
1146	IF ( ( humidity .OR. passive_scalar ) .AND. &
1147	q_surface_initial_change /= 0.0 ) THEN
1148	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1149	ENDIF
1150	!
1151	!-- Initialize the random number generator (from numerical recipes)
1152	CALL random_function_ini
1153
1154	!
1155	!-- Initialize old and new time levels.
1156	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1157	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1158
1159	IF ( humidity .OR. passive_scalar ) THEN
1160	tq_m = 0.0
1161	q_p = q
1162	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1163	precipitation ) THEN
1164	tqr_m = 0.0
1165	qr_p = qr
1166	tnr_m = 0.0
1167	nr_p = nr
1168	ENDIF
1169	ENDIF
1170
1171	IF ( ocean ) THEN
1172	tsa_m = 0.0
1173	sa_p = sa
1174	ENDIF
1175
1176
1177	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1178	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1179	THEN
1180	!
1181	!-- When reading data for cyclic fill of 3D prerun data files, read
1182	!-- some of the global variables from the restart file which are required
1183	!-- for initializing the inflow
1184	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1185
1186	DO i = 0, io_blocks-1
1187	IF ( i == io_group ) THEN
1188	CALL read_parts_of_var_list
1189	CALL close_file( 13 )
1190	ENDIF
1191	#if defined( __parallel )
1192	CALL MPI_BARRIER( comm2d, ierr )
1193	#endif
1194	ENDDO
1195
1196	ENDIF
1197
1198	!
1199	!-- Read binary data from restart file
1200	DO i = 0, io_blocks-1
1201	IF ( i == io_group ) THEN
1202	CALL read_3d_binary
1203	ENDIF
1204	#if defined( __parallel )
1205	CALL MPI_BARRIER( comm2d, ierr )
1206	#endif
1207	ENDDO
1208
1209	!
1210	!-- Initialization of the turbulence recycling method
1211	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1212	turbulent_inflow ) THEN
1213	!
1214	!-- First store the profiles to be used at the inflow.
1215	!-- These profiles are the (temporally) and horizontally averaged vertical
1216	!-- profiles from the prerun. Alternatively, prescribed profiles
1217	!-- for u,v-components can be used.
1218	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
1219
1220	IF ( use_prescribed_profile_data ) THEN
1221	mean_inflow_profiles(:,1) = u_init ! u
1222	mean_inflow_profiles(:,2) = v_init ! v
1223	ELSE
1224	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1225	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1226	ENDIF
1227	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1228	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1229
1230	!
1231	!-- If necessary, adjust the horizontal flow field to the prescribed
1232	!-- profiles
1233	IF ( use_prescribed_profile_data ) THEN
1234	DO i = nxlg, nxrg
1235	DO j = nysg, nyng
1236	DO k = nzb, nzt+1
1237	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1238	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1239	ENDDO
1240	ENDDO
1241	ENDDO
1242	ENDIF
1243
1244	!
1245	!-- Use these mean profiles at the inflow (provided that Dirichlet
1246	!-- conditions are used)
1247	IF ( inflow_l ) THEN
1248	DO j = nysg, nyng
1249	DO k = nzb, nzt+1
1250	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1251	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1252	w(k,j,nxlg:-1) = 0.0
1253	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1254	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1255	ENDDO
1256	ENDDO
1257	ENDIF
1258
1259	!
1260	!-- Calculate the damping factors to be used at the inflow. For a
1261	!-- turbulent inflow the turbulent fluctuations have to be limited
1262	!-- vertically because otherwise the turbulent inflow layer will grow
1263	!-- in time.
1264	IF ( inflow_damping_height == 9999999.9 ) THEN
1265	!
1266	!-- Default: use the inversion height calculated by the prerun; if
1267	!-- this is zero, inflow_damping_height must be explicitly
1268	!-- specified.
1269	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0 ) THEN
1270	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1271	ELSE
1272	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1273	'explicitly specified because&the inversion height ', &
1274	'calculated by the prerun is zero.'
1275	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1276	ENDIF
1277
1278	ENDIF
1279
1280	IF ( inflow_damping_width == 9999999.9 ) THEN
1281	!
1282	!-- Default for the transition range: one tenth of the undamped
1283	!-- layer
1284	inflow_damping_width = 0.1 * inflow_damping_height
1285
1286	ENDIF
1287
1288	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1289
1290	DO k = nzb, nzt+1
1291
1292	IF ( zu(k) <= inflow_damping_height ) THEN
1293	inflow_damping_factor(k) = 1.0
1294	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1295	inflow_damping_factor(k) = 1.0 - &
1296	( zu(k) - inflow_damping_height ) / &
1297	inflow_damping_width
1298	ELSE
1299	inflow_damping_factor(k) = 0.0
1300	ENDIF
1301
1302	ENDDO
1303
1304	ENDIF
1305
1306	!
1307	!-- Inside buildings set velocities and TKE back to zero
1308	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1309	topography /= 'flat' ) THEN
1310	!
1311	!-- Inside buildings set velocities and TKE back to zero.
1312	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1313	!-- maybe revise later.
1314	DO i = nxlg, nxrg
1315	DO j = nysg, nyng
1316	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1317	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1318	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1319	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1320	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1321	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1322	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1323	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1324	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1325	ENDDO
1326	ENDDO
1327
1328	ENDIF
1329
1330	!
1331	!-- Calculate initial temperature field and other constants used in case
1332	!-- of a sloping surface
1333	IF ( sloping_surface ) CALL init_slope
1334
1335	!
1336	!-- Initialize new time levels (only done in order to set boundary values
1337	!-- including ghost points)
1338	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1339	IF ( humidity .OR. passive_scalar ) THEN
1340	q_p = q
1341	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1342	precipitation ) THEN
1343	qr_p = qr
1344	nr_p = nr
1345	ENDIF
1346	ENDIF
1347	IF ( ocean ) sa_p = sa
1348
1349	!
1350	!-- Allthough tendency arrays are set in prognostic_equations, they have
1351	!-- have to be predefined here because they are used (but multiplied with 0)
1352	!-- there before they are set.
1353	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1354	IF ( humidity .OR. passive_scalar ) THEN
1355	tq_m = 0.0
1356	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1357	precipitation ) THEN
1358	tqr_m = 0.0
1359	tnr_m = 0.0
1360	ENDIF
1361	ENDIF
1362	IF ( ocean ) tsa_m = 0.0
1363
1364	ELSE
1365	!
1366	!-- Actually this part of the programm should not be reached
1367	message_string = 'unknown initializing problem'
1368	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1369	ENDIF
1370
1371
1372	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1373	!
1374	!-- Initialize old timelevels needed for radiation boundary conditions
1375	IF ( outflow_l ) THEN
1376	u_m_l(:,:,:) = u(:,:,1:2)
1377	v_m_l(:,:,:) = v(:,:,0:1)
1378	w_m_l(:,:,:) = w(:,:,0:1)
1379	ENDIF
1380	IF ( outflow_r ) THEN
1381	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1382	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1383	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1384	ENDIF
1385	IF ( outflow_s ) THEN
1386	u_m_s(:,:,:) = u(:,0:1,:)
1387	v_m_s(:,:,:) = v(:,1:2,:)
1388	w_m_s(:,:,:) = w(:,0:1,:)
1389	ENDIF
1390	IF ( outflow_n ) THEN
1391	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1392	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1393	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1394	ENDIF
1395
1396	ENDIF
1397
1398	!
1399	!-- Calculate the initial volume flow at the right and north boundary
1400	IF ( conserve_volume_flow ) THEN
1401
1402	IF ( use_prescribed_profile_data ) THEN
1403
1404	volume_flow_initial_l = 0.0
1405	volume_flow_area_l = 0.0
1406
1407	IF ( nxr == nx ) THEN
1408	DO j = nys, nyn
1409	DO k = nzb_2d(j,nx)+1, nzt
1410	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1411	u_init(k) * dzw(k)
1412	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1413	ENDDO
1414	ENDDO
1415	ENDIF
1416
1417	IF ( nyn == ny ) THEN
1418	DO i = nxl, nxr
1419	DO k = nzb_2d(ny,i)+1, nzt
1420	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1421	v_init(k) * dzw(k)
1422	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1423	ENDDO
1424	ENDDO
1425	ENDIF
1426
1427	#if defined( __parallel )
1428	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1429	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1430	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1431	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1432
1433	#else
1434	volume_flow_initial = volume_flow_initial_l
1435	volume_flow_area = volume_flow_area_l
1436	#endif
1437
1438	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1439
1440	volume_flow_initial_l = 0.0
1441	volume_flow_area_l = 0.0
1442
1443	IF ( nxr == nx ) THEN
1444	DO j = nys, nyn
1445	DO k = nzb_2d(j,nx)+1, nzt
1446	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1447	hom_sum(k,1,0) * dzw(k)
1448	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1449	ENDDO
1450	ENDDO
1451	ENDIF
1452
1453	IF ( nyn == ny ) THEN
1454	DO i = nxl, nxr
1455	DO k = nzb_2d(ny,i)+1, nzt
1456	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1457	hom_sum(k,2,0) * dzw(k)
1458	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1459	ENDDO
1460	ENDDO
1461	ENDIF
1462
1463	#if defined( __parallel )
1464	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1465	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1466	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1467	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1468
1469	#else
1470	volume_flow_initial = volume_flow_initial_l
1471	volume_flow_area = volume_flow_area_l
1472	#endif
1473
1474	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1475
1476	volume_flow_initial_l = 0.0
1477	volume_flow_area_l = 0.0
1478
1479	IF ( nxr == nx ) THEN
1480	DO j = nys, nyn
1481	DO k = nzb_2d(j,nx)+1, nzt
1482	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1483	u(k,j,nx) * dzw(k)
1484	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1485	ENDDO
1486	ENDDO
1487	ENDIF
1488
1489	IF ( nyn == ny ) THEN
1490	DO i = nxl, nxr
1491	DO k = nzb_2d(ny,i)+1, nzt
1492	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1493	v(k,ny,i) * dzw(k)
1494	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1495	ENDDO
1496	ENDDO
1497	ENDIF
1498
1499	#if defined( __parallel )
1500	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1501	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1502	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1503	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1504
1505	#else
1506	volume_flow_initial = volume_flow_initial_l
1507	volume_flow_area = volume_flow_area_l
1508	#endif
1509
1510	ENDIF
1511
1512	!
1513	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1514	!-- from u\|v_bulk instead
1515	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1516	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1517	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1518	ENDIF
1519
1520	ENDIF
1521
1522	!
1523	!-- Initialize quantities for special advections schemes
1524	CALL init_advec
1525
1526	!
1527	!-- Impose random perturbation on the horizontal velocity field and then
1528	!-- remove the divergences from the velocity field at the initial stage
1529	IF ( create_disturbances .AND. &
1530	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1531	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1532
1533	CALL disturb_field( nzb_u_inner, tend, u )
1534	CALL disturb_field( nzb_v_inner, tend, v )
1535	n_sor = nsor_ini
1536	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1537	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1538	!$acc copyin( weight_pres, weight_substep ) &
1539	!$acc copy( tri, tric, u, v, w )
1540	CALL pres
1541	!$acc end data
1542	n_sor = nsor
1543	ENDIF
1544
1545	!
1546	!-- Initialization of the leaf area density
1547	IF ( plant_canopy ) THEN
1548
1549	SELECT CASE ( TRIM( canopy_mode ) )
1550
1551	CASE( 'block' )
1552
1553	DO i = nxlg, nxrg
1554	DO j = nysg, nyng
1555	lad_s(:,j,i) = lad(:)
1556	cdc(:,j,i) = drag_coefficient
1557	IF ( passive_scalar ) THEN
1558	sls(:,j,i) = leaf_surface_concentration
1559	sec(:,j,i) = scalar_exchange_coefficient
1560	ENDIF
1561	ENDDO
1562	ENDDO
1563
1564	CASE DEFAULT
1565
1566	!
1567	!-- The DEFAULT case is reached either if the parameter
1568	!-- canopy mode contains a wrong character string or if the
1569	!-- user has coded a special case in the user interface.
1570	!-- There, the subroutine user_init_plant_canopy checks
1571	!-- which of these two conditions applies.
1572	CALL user_init_plant_canopy
1573
1574	END SELECT
1575
1576	CALL exchange_horiz( lad_s, nbgp )
1577	CALL exchange_horiz( cdc, nbgp )
1578
1579	IF ( passive_scalar ) THEN
1580	CALL exchange_horiz( sls, nbgp )
1581	CALL exchange_horiz( sec, nbgp )
1582	ENDIF
1583
1584	!
1585	!-- Sharp boundaries of the plant canopy in horizontal directions
1586	!-- In vertical direction the interpolation is retained, as the leaf
1587	!-- area density is initialised by prescribing a vertical profile
1588	!-- consisting of piecewise linear segments. The upper boundary
1589	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1590
1591	DO i = nxl, nxr
1592	DO j = nys, nyn
1593	DO k = nzb, nzt+1
1594	IF ( lad_s(k,j,i) > 0.0 ) THEN
1595	lad_u(k,j,i) = lad_s(k,j,i)
1596	lad_u(k,j,i+1) = lad_s(k,j,i)
1597	lad_v(k,j,i) = lad_s(k,j,i)
1598	lad_v(k,j+1,i) = lad_s(k,j,i)
1599	ENDIF
1600	ENDDO
1601	DO k = nzb, nzt
1602	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1603	ENDDO
1604	ENDDO
1605	ENDDO
1606
1607	lad_w(pch_index,:,:) = 0.0
1608	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1609
1610	CALL exchange_horiz( lad_u, nbgp )
1611	CALL exchange_horiz( lad_v, nbgp )
1612	CALL exchange_horiz( lad_w, nbgp )
1613
1614	!
1615	!-- Initialisation of the canopy heat source distribution
1616	IF ( cthf /= 0.0 ) THEN
1617	!
1618	!-- Piecewise evaluation of the leaf area index by
1619	!-- integration of the leaf area density
1620	lai(:,:,:) = 0.0
1621	DO i = nxlg, nxrg
1622	DO j = nysg, nyng
1623	DO k = pch_index-1, 0, -1
1624	lai(k,j,i) = lai(k+1,j,i) + &
1625	( 0.5 * ( lad_w(k+1,j,i) + &
1626	lad_s(k+1,j,i) ) * &
1627	( zw(k+1) - zu(k+1) ) ) + &
1628	( 0.5 * ( lad_w(k,j,i) + &
1629	lad_s(k+1,j,i) ) * &
1630	( zu(k+1) - zw(k) ) )
1631	ENDDO
1632	ENDDO
1633	ENDDO
1634
1635	!
1636	!-- Evaluation of the upward kinematic vertical heat flux within the
1637	!-- canopy
1638	DO i = nxlg, nxrg
1639	DO j = nysg, nyng
1640	DO k = 0, pch_index
1641	canopy_heat_flux(k,j,i) = cthf * &
1642	exp( -0.6 * lai(k,j,i) )
1643	ENDDO
1644	ENDDO
1645	ENDDO
1646
1647	!
1648	!-- The near surface heat flux is derived from the heat flux
1649	!-- distribution within the canopy
1650	shf(:,:) = canopy_heat_flux(0,:,:)
1651
1652	ENDIF
1653
1654	ENDIF
1655
1656	!
1657	!-- If required, initialize dvrp-software
1658	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
1659
1660	IF ( ocean ) THEN
1661	!
1662	!-- Initialize quantities needed for the ocean model
1663	CALL init_ocean
1664
1665	ELSE
1666	!
1667	!-- Initialize quantities for handling cloud physics
1668	!-- This routine must be called before lpm_init, because
1669	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1670	!-- lpm_init) is not defined.
1671	CALL init_cloud_physics
1672	ENDIF
1673
1674	!
1675	!-- If required, initialize particles
1676	IF ( particle_advection ) CALL lpm_init
1677
1678	!
1679	!-- Initialize the ws-scheme.
1680	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1681
1682	!
1683	!-- Setting weighting factors for calculation of perturbation pressure
1684	!-- and turbulent quantities from the RK substeps
1685	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1686
1687	weight_substep(1) = 1./6.
1688	weight_substep(2) = 3./10.
1689	weight_substep(3) = 8./15.
1690
1691	weight_pres(1) = 1./3.
1692	weight_pres(2) = 5./12.
1693	weight_pres(3) = 1./4.
1694
1695	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1696
1697	weight_substep(1) = 1./2.
1698	weight_substep(2) = 1./2.
1699
1700	weight_pres(1) = 1./2.
1701	weight_pres(2) = 1./2.
1702
1703	ELSE ! for Euler-method
1704
1705	weight_substep(1) = 1.0
1706	weight_pres(1) = 1.0
1707
1708	ENDIF
1709
1710	!
1711	!-- Initialize Rayleigh damping factors
1712	rdf = 0.0
1713	rdf_sc = 0.0
1714	IF ( rayleigh_damping_factor /= 0.0 ) THEN
1715	IF ( .NOT. ocean ) THEN
1716	DO k = nzb+1, nzt
1717	IF ( zu(k) >= rayleigh_damping_height ) THEN
1718	rdf(k) = rayleigh_damping_factor * &
1719	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
1720	/ ( zu(nzt) - rayleigh_damping_height ) )&
1721	)**2
1722	ENDIF
1723	ENDDO
1724	ELSE
1725	DO k = nzt, nzb+1, -1
1726	IF ( zu(k) <= rayleigh_damping_height ) THEN
1727	rdf(k) = rayleigh_damping_factor * &
1728	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
1729	/ ( rayleigh_damping_height - zu(nzb+1)))&
1730	)**2
1731	ENDIF
1732	ENDDO
1733	ENDIF
1734	ENDIF
1735	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1736
1737	!
1738	!-- Initialize the starting level and the vertical smoothing factor used for
1739	!-- the external pressure gradient
1740	dp_smooth_factor = 1.0
1741	IF ( dp_external ) THEN
1742	!
1743	!-- Set the starting level dp_level_ind_b only if it has not been set before
1744	!-- (e.g. in init_grid).
1745	IF ( dp_level_ind_b == 0 ) THEN
1746	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1747	dp_level_ind_b = ind_array(1) - 1 + nzb
1748	! MINLOC uses lower array bound 1
1749	ENDIF
1750	IF ( dp_smooth ) THEN
1751	dp_smooth_factor(:dp_level_ind_b) = 0.0
1752	DO k = dp_level_ind_b+1, nzt
1753	dp_smooth_factor(k) = 0.5 * ( 1.0 + SIN( pi * &
1754	( REAL( k - dp_level_ind_b ) / &
1755	REAL( nzt - dp_level_ind_b ) - 0.5 ) ) )
1756	ENDDO
1757	ENDIF
1758	ENDIF
1759
1760	!
1761	!-- Initialize damping zone for the potential temperature in case of
1762	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1763	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1764	ptdf_x = 0.0
1765	ptdf_y = 0.0
1766	IF ( bc_lr_dirrad ) THEN
1767	DO i = nxl, nxr
1768	IF ( ( i * dx ) < pt_damping_width ) THEN
1769	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5 * &
1770	REAL( pt_damping_width - i * dx ) / ( &
1771	REAL( pt_damping_width ) ) ) )**2
1772	ENDIF
1773	ENDDO
1774	ELSEIF ( bc_lr_raddir ) THEN
1775	DO i = nxl, nxr
1776	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1777	ptdf_x(i) = pt_damping_factor * &
1778	SIN( pi * 0.5 * ( ( i - nx ) * dx + pt_damping_width ) / &
1779	REAL( pt_damping_width ) )**2
1780	ENDIF
1781	ENDDO
1782	ELSEIF ( bc_ns_dirrad ) THEN
1783	DO j = nys, nyn
1784	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1785	ptdf_y(j) = pt_damping_factor * &
1786	SIN( pi * 0.5 * ( ( j - ny ) * dy + pt_damping_width ) / &
1787	REAL( pt_damping_width ) )**2
1788	ENDIF
1789	ENDDO
1790	ELSEIF ( bc_ns_raddir ) THEN
1791	DO j = nys, nyn
1792	IF ( ( j * dy ) < pt_damping_width ) THEN
1793	ptdf_y(j) = pt_damping_factor * &
1794	SIN( pi * 0.5 * ( pt_damping_width - j * dy ) / &
1795	REAL( pt_damping_width ) )**2
1796	ENDIF
1797	ENDDO
1798	ENDIF
1799
1800	!
1801	!-- Initialize local summation arrays for routine flow_statistics.
1802	!-- This is necessary because they may not yet have been initialized when they
1803	!-- are called from flow_statistics (or - depending on the chosen model run -
1804	!-- are never initialized)
1805	sums_divnew_l = 0.0
1806	sums_divold_l = 0.0
1807	sums_l_l = 0.0
1808	sums_up_fraction_l = 0.0
1809	sums_wsts_bc_l = 0.0
1810
1811	!
1812	!-- Pre-set masks for regional statistics. Default is the total model domain.
1813	!-- Ghost points are excluded because counting values at the ghost boundaries
1814	!-- would bias the statistics
1815	rmask = 1.0
1816	rmask(:,nxlg:nxl-1,:) = 0.0; rmask(:,nxr+1:nxrg,:) = 0.0
1817	rmask(nysg:nys-1,:,:) = 0.0; rmask(nyn+1:nyng,:,:) = 0.0
1818
1819	!
1820	!-- User-defined initializing actions. Check afterwards, if maximum number
1821	!-- of allowed timeseries is exceeded
1822	CALL user_init
1823
1824	IF ( dots_num > dots_max ) THEN
1825	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1826	' its maximum of dots_max = ', dots_max, &
1827	' &Please increase dots_max in modules.f90.'
1828	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1829	ENDIF
1830
1831	!
1832	!-- Input binary data file is not needed anymore. This line must be placed
1833	!-- after call of user_init!
1834	CALL close_file( 13 )
1835
1836	!
1837	!-- Compute total sum of active mask grid points
1838	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1839	!-- total domain
1840	!-- ngp_3d: number of grid points of the total domain
1841	ngp_2dh_outer_l = 0
1842	ngp_2dh_outer = 0
1843	ngp_2dh_s_inner_l = 0
1844	ngp_2dh_s_inner = 0
1845	ngp_2dh_l = 0
1846	ngp_2dh = 0
1847	ngp_3d_inner_l = 0.0
1848	ngp_3d_inner = 0
1849	ngp_3d = 0
1850	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1851
1852	DO sr = 0, statistic_regions
1853	DO i = nxl, nxr
1854	DO j = nys, nyn
1855	IF ( rmask(j,i,sr) == 1.0 ) THEN
1856	!
1857	!-- All xy-grid points
1858	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1859	!
1860	!-- xy-grid points above topography
1861	DO k = nzb_s_outer(j,i), nz + 1
1862	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1863	ENDDO
1864	DO k = nzb_s_inner(j,i), nz + 1
1865	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1866	ENDDO
1867	!
1868	!-- All grid points of the total domain above topography
1869	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1870	( nz - nzb_s_inner(j,i) + 2 )
1871	ENDIF
1872	ENDDO
1873	ENDDO
1874	ENDDO
1875
1876	sr = statistic_regions + 1
1877	#if defined( __parallel )
1878	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1879	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1880	comm2d, ierr )
1881	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1882	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1883	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1884	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1885	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1886	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1887	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1888	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1889	MPI_SUM, comm2d, ierr )
1890	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1891	#else
1892	ngp_2dh = ngp_2dh_l
1893	ngp_2dh_outer = ngp_2dh_outer_l
1894	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1895	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1896	#endif
1897
1898	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1899	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1900
1901	!
1902	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1903	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1904	!-- the respective subdomain lie below the surface topography
1905	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1906	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1907	ngp_3d_inner(:) )
1908	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1909
1910	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1911
1912
1913	END SUBROUTINE init_3d_model

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