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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1788

Last change on this file since 1788 was 1788, checked in by maronga, 9 years ago
added support for water and paved surfaced in land surface model / minor changes
Property svn:keywords set to `Id`
File size: 70.5 KB

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1	!> @file init_3d_model.f90
2	!--------------------------------------------------------------------------------!
3	! This file is part of PALM.
4	!
5	! PALM is free software: you can redistribute it and/or modify it under the terms
6	! of the GNU General Public License as published by the Free Software Foundation,
7	! either version 3 of the License, or (at your option) any later version.
8	!
9	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
10	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
11	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
12	!
13	! You should have received a copy of the GNU General Public License along with
14	! PALM. If not, see <http://www.gnu.org/licenses/>.
15	!
16	! Copyright 1997-2015 Leibniz Universitaet Hannover
17	!--------------------------------------------------------------------------------!
18	!
19	! Current revisions:
20	! ------------------
21	! Added z0q.
22	! Syntax layout improved.
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: init_3d_model.f90 1788 2016-03-10 11:01:04Z maronga $
27	!
28	! 1783 2016-03-06 18:36:17Z raasch
29	! netcdf module name changed + related changes
30	!
31	! 1764 2016-02-28 12:45:19Z raasch
32	! bugfix: increase size of volume_flow_area_l and volume_flow_initial_l by 1
33	!
34	! 1762 2016-02-25 12:31:13Z hellstea
35	! Introduction of nested domain feature
36	!
37	! 1738 2015-12-18 13:56:05Z raasch
38	! calculate mean surface level height for each statistic region
39	!
40	! 1734 2015-12-02 12:17:12Z raasch
41	! no initial disturbances in case that the disturbance energy limit has been
42	! set zero
43	!
44	! 1707 2015-11-02 15:24:52Z maronga
45	! Bugfix: transfer of Richardson number from 1D model to Obukhov length caused
46	! devision by zero in neutral stratification
47	!
48	! 1691 2015-10-26 16:17:44Z maronga
49	! Call to init_surface_layer added. rif is replaced by ol and zeta.
50	!
51	! 1682 2015-10-07 23:56:08Z knoop
52	! Code annotations made doxygen readable
53	!
54	! 1615 2015-07-08 18:49:19Z suehring
55	! Enable turbulent inflow for passive_scalar and humidity
56	!
57	! 1585 2015-04-30 07:05:52Z maronga
58	! Initialization of radiation code is now done after LSM initializtion
59	!
60	! 1575 2015-03-27 09:56:27Z raasch
61	! adjustments for psolver-queries
62	!
63	! 1551 2015-03-03 14:18:16Z maronga
64	! Allocation of land surface arrays is now done in the subroutine init_lsm_arrays,
65	! which is part of land_surface_model.
66	!
67	! 1507 2014-12-10 12:14:18Z suehring
68	! Bugfix: set horizontal velocity components to zero inside topography
69	!
70	! 1496 2014-12-02 17:25:50Z maronga
71	! Added initialization of the land surface and radiation schemes
72	!
73	! 1484 2014-10-21 10:53:05Z kanani
74	! Changes due to new module structure of the plant canopy model:
75	! canopy-related initialization (e.g. lad and canopy_heat_flux) moved to new
76	! subroutine init_plant_canopy within the module plant_canopy_model_mod,
77	! call of subroutine init_plant_canopy added.
78	!
79	! 1431 2014-07-15 14:47:17Z suehring
80	! var_d added, in order to normalize spectra.
81	!
82	! 1429 2014-07-15 12:53:45Z knoop
83	! Ensemble run capability added to parallel random number generator
84	!
85	! 1411 2014-05-16 18:01:51Z suehring
86	! Initial horizontal velocity profiles were not set to zero at the first vertical
87	! grid level in case of non-cyclic lateral boundary conditions.
88	!
89	! 1406 2014-05-16 13:47:01Z raasch
90	! bugfix: setting of initial velocities at k=1 to zero not in case of a
91	! no-slip boundary condition for uv
92	!
93	! 1402 2014-05-09 14:25:13Z raasch
94	! location messages modified
95	!
96	! 1400 2014-05-09 14:03:54Z knoop
97	! Parallel random number generator added
98	!
99	! 1384 2014-05-02 14:31:06Z raasch
100	! location messages added
101	!
102	! 1361 2014-04-16 15:17:48Z hoffmann
103	! tend_* removed
104	! Bugfix: w_subs is not allocated anymore if it is already allocated
105	!
106	! 1359 2014-04-11 17:15:14Z hoffmann
107	! module lpm_init_mod added to use statements, because lpm_init has become a
108	! module
109	!
110	! 1353 2014-04-08 15:21:23Z heinze
111	! REAL constants provided with KIND-attribute
112	!
113	! 1340 2014-03-25 19:45:13Z kanani
114	! REAL constants defined as wp-kind
115	!
116	! 1322 2014-03-20 16:38:49Z raasch
117	! REAL constants defined as wp-kind
118	! module interfaces removed
119	!
120	! 1320 2014-03-20 08:40:49Z raasch
121	! ONLY-attribute added to USE-statements,
122	! kind-parameters added to all INTEGER and REAL declaration statements,
123	! kinds are defined in new module kinds,
124	! revision history before 2012 removed,
125	! comment fields (!:) to be used for variable explanations added to
126	! all variable declaration statements
127	!
128	! 1316 2014-03-17 07:44:59Z heinze
129	! Bugfix: allocation of w_subs
130	!
131	! 1299 2014-03-06 13:15:21Z heinze
132	! Allocate w_subs due to extension of large scale subsidence in combination
133	! with large scale forcing data (LSF_DATA)
134	!
135	! 1241 2013-10-30 11:36:58Z heinze
136	! Overwrite initial profiles in case of nudging
137	! Inititialize shf and qsws in case of large_scale_forcing
138	!
139	! 1221 2013-09-10 08:59:13Z raasch
140	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
141	! copy
142	!
143	! 1212 2013-08-15 08:46:27Z raasch
144	! array tri is allocated and included in data copy statement
145	!
146	! 1195 2013-07-01 12:27:57Z heinze
147	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
148	!
149	! 1179 2013-06-14 05:57:58Z raasch
150	! allocate and set ref_state to be used in buoyancy terms
151	!
152	! 1171 2013-05-30 11:27:45Z raasch
153	! diss array is allocated with full size if accelerator boards are used
154	!
155	! 1159 2013-05-21 11:58:22Z fricke
156	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
157	!
158	! 1153 2013-05-10 14:33:08Z raasch
159	! diss array is allocated with dummy elements even if it is not needed
160	! (required by PGI 13.4 / CUDA 5.0)
161	!
162	! 1115 2013-03-26 18:16:16Z hoffmann
163	! unused variables removed
164	!
165	! 1113 2013-03-10 02:48:14Z raasch
166	! openACC directive modified
167	!
168	! 1111 2013-03-08 23:54:10Z raasch
169	! openACC directives added for pres
170	! array diss allocated only if required
171	!
172	! 1092 2013-02-02 11:24:22Z raasch
173	! unused variables removed
174	!
175	! 1065 2012-11-22 17:42:36Z hoffmann
176	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
177	!
178	! 1053 2012-11-13 17:11:03Z hoffmann
179	! allocation and initialisation of necessary data arrays for the two-moment
180	! cloud physics scheme the two new prognostic equations (nr, qr):
181	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
182	! +tend_*, prr
183	!
184	! 1036 2012-10-22 13:43:42Z raasch
185	! code put under GPL (PALM 3.9)
186	!
187	! 1032 2012-10-21 13:03:21Z letzel
188	! save memory by not allocating pt_2 in case of neutral = .T.
189	!
190	! 1025 2012-10-07 16:04:41Z letzel
191	! bugfix: swap indices of mask for ghost boundaries
192	!
193	! 1015 2012-09-27 09:23:24Z raasch
194	! mask is set to zero for ghost boundaries
195	!
196	! 1010 2012-09-20 07:59:54Z raasch
197	! cpp switch __nopointer added for pointer free version
198	!
199	! 1003 2012-09-14 14:35:53Z raasch
200	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
201	!
202	! 1001 2012-09-13 14:08:46Z raasch
203	! all actions concerning leapfrog scheme removed
204	!
205	! 996 2012-09-07 10:41:47Z raasch
206	! little reformatting
207	!
208	! 978 2012-08-09 08:28:32Z fricke
209	! outflow damping layer removed
210	! roughness length for scalar quantites z0h added
211	! damping zone for the potential temperatur in case of non-cyclic lateral
212	! boundaries added
213	! initialization of ptdf_x, ptdf_y
214	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
215	!
216	! 849 2012-03-15 10:35:09Z raasch
217	! init_particles renamed lpm_init
218	!
219	! 825 2012-02-19 03:03:44Z raasch
220	! wang_collision_kernel renamed wang_kernel
221	!
222	! Revision 1.1 1998/03/09 16:22:22 raasch
223	! Initial revision
224	!
225	!
226	! Description:
227	! ------------
228	!> Allocation of arrays and initialization of the 3D model via
229	!> a) pre-run the 1D model
230	!> or
231	!> b) pre-set constant linear profiles
232	!> or
233	!> c) read values of a previous run
234	!------------------------------------------------------------------------------!
235	SUBROUTINE init_3d_model
236
237
238	USE advec_ws
239
240	USE arrays_3d
241
242	USE cloud_parameters, &
243	ONLY: nc_const, precipitation_amount, precipitation_rate, prr
244
245	USE constants, &
246	ONLY: pi
247
248	USE control_parameters
249
250	USE grid_variables, &
251	ONLY: dx, dy
252
253	USE indices
254
255	USE lpm_init_mod, &
256	ONLY: lpm_init
257
258	USE kinds
259
260	USE land_surface_model_mod, &
261	ONLY: init_lsm, init_lsm_arrays, land_surface
262
263	USE ls_forcing_mod
264
265	USE model_1d, &
266	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
267
268	USE netcdf_interface, &
269	ONLY: dots_max, dots_num
270
271	USE particle_attributes, &
272	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
273
274	USE pegrid
275
276	USE plant_canopy_model_mod, &
277	ONLY: init_plant_canopy, plant_canopy
278
279	USE radiation_model_mod, &
280	ONLY: init_radiation, radiation
281
282	USE random_function_mod
283
284	USE random_generator_parallel, &
285	ONLY: random_number_parallel, random_seed_parallel, random_dummy, &
286	id_random_array, seq_random_array
287
288	USE statistics, &
289	ONLY: hom, hom_sum, mean_surface_level_height, pr_palm, rmask, &
290	spectrum_x, spectrum_y, statistic_regions, sums, sums_divnew_l, &
291	sums_divold_l, sums_l, sums_l_l, sums_up_fraction_l, &
292	sums_wsts_bc_l, ts_value, var_d, weight_pres, weight_substep
293
294	USE surface_layer_fluxes_mod, &
295	ONLY: init_surface_layer_fluxes
296
297	USE transpose_indices
298
299	IMPLICIT NONE
300
301	INTEGER(iwp) :: i !<
302	INTEGER(iwp) :: ind_array(1) !<
303	INTEGER(iwp) :: j !<
304	INTEGER(iwp) :: k !<
305	INTEGER(iwp) :: sr !<
306
307	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !<
308
309	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !<
310	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !<
311
312	REAL(wp), DIMENSION(1:3) :: volume_flow_area_l !<
313	REAL(wp), DIMENSION(1:3) :: volume_flow_initial_l !<
314
315	REAL(wp), DIMENSION(:), ALLOCATABLE :: mean_surface_level_height_l !<
316	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !<
317	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !<
318
319
320	CALL location_message( 'allocating arrays', .FALSE. )
321	!
322	!-- Allocate arrays
323	ALLOCATE( mean_surface_level_height(0:statistic_regions), &
324	mean_surface_level_height_l(0:statistic_regions), &
325	ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
326	ngp_3d(0:statistic_regions), &
327	ngp_3d_inner(0:statistic_regions), &
328	ngp_3d_inner_l(0:statistic_regions), &
329	ngp_3d_inner_tmp(0:statistic_regions), &
330	sums_divnew_l(0:statistic_regions), &
331	sums_divold_l(0:statistic_regions) )
332	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
333	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
334	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
335	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
336	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
337	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
338	sums(nzb:nzt+1,pr_palm+max_pr_user), &
339	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
340	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
341	sums_up_fraction_l(10,3,0:statistic_regions), &
342	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
343	ts_value(dots_max,0:statistic_regions) )
344	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
345
346	ALLOCATE( ol(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
347	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
348	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
349	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
350	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
351	z0h(nysg:nyng,nxlg:nxrg), z0q(nysg:nyng,nxlg:nxrg) )
352
353	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
354	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
355	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
356	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
357	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
358
359	#if defined( __nopointer )
360	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
361	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
362	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
363	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
364	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
365	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
366	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
367	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
368	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
369	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
370	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
371	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
372	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
373	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
374	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
375	#else
376	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
377	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
378	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
379	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
380	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
381	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
382	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
383	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
384	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
385	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
386	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
387	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
388	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
389	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
390	IF ( .NOT. neutral ) THEN
391	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
392	ENDIF
393	#endif
394
395	!
396	!-- Following array is required for perturbation pressure within the iterative
397	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
398	!-- the weighted average of the substeps and cannot be used in the Poisson
399	!-- solver.
400	IF ( psolver == 'sor' ) THEN
401	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
402	ELSEIF ( psolver(1:9) == 'multigrid' ) THEN
403	!
404	!-- For performance reasons, multigrid is using one ghost layer only
405	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
406	ENDIF
407
408	!
409	!-- Array for storing constant coeffficients of the tridiagonal solver
410	IF ( psolver == 'poisfft' ) THEN
411	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
412	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
413	ENDIF
414
415	IF ( humidity .OR. passive_scalar ) THEN
416	!
417	!-- 2D-humidity/scalar arrays
418	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
419	qsws(nysg:nyng,nxlg:nxrg), &
420	qswst(nysg:nyng,nxlg:nxrg) )
421
422	!
423	!-- 3D-humidity/scalar arrays
424	#if defined( __nopointer )
425	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
426	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
427	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
428	#else
429	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
430	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
431	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
432	#endif
433
434	!
435	!-- 3D-arrays needed for humidity only
436	IF ( humidity ) THEN
437	#if defined( __nopointer )
438	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
439	#else
440	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
441	#endif
442
443	IF ( cloud_physics ) THEN
444
445	!
446	!-- Liquid water content
447	#if defined( __nopointer )
448	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
449	#else
450	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
451	#endif
452	!
453	!-- Precipitation amount and rate (only needed if output is switched)
454	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
455	precipitation_rate(nysg:nyng,nxlg:nxrg) )
456
457	IF ( icloud_scheme == 0 ) THEN
458	!
459	!-- 1D-arrays
460	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
461	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
462	!
463	!-- 3D-cloud water content
464	#if defined( __nopointer )
465	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
466	#else
467	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
468	#endif
469
470	IF ( precipitation ) THEN
471	!
472	!-- 1D-arrays
473	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
474
475	!
476	!-- 2D-rain water content and rain drop concentration arrays
477	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
478	qrsws(nysg:nyng,nxlg:nxrg), &
479	qrswst(nysg:nyng,nxlg:nxrg), &
480	nrs(nysg:nyng,nxlg:nxrg), &
481	nrsws(nysg:nyng,nxlg:nxrg), &
482	nrswst(nysg:nyng,nxlg:nxrg) )
483	!
484	!-- 3D-rain water content, rain drop concentration arrays
485	#if defined( __nopointer )
486	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
487	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
488	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
489	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
490	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
491	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
492	#else
493	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
494	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
495	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
496	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
497	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
498	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
499	#endif
500	!
501	!-- 3d-precipitation rate
502	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
503	ENDIF
504
505	ENDIF
506	ENDIF
507
508	IF ( cloud_droplets ) THEN
509	!
510	!-- Liquid water content, change in liquid water content
511	#if defined( __nopointer )
512	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
513	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
514	#else
515	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
516	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
517	#endif
518	!
519	!-- Real volume of particles (with weighting), volume of particles
520	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
521	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
522	ENDIF
523
524	ENDIF
525
526	ENDIF
527
528	IF ( ocean ) THEN
529	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
530	saswst(nysg:nyng,nxlg:nxrg) )
531	#if defined( __nopointer )
532	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
533	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
534	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
535	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
536	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
537	#else
538	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
539	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
540	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
541	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
542	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
543	prho => prho_1
544	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
545	! density to be apointer
546	#endif
547	IF ( humidity_remote ) THEN
548	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
549	qswst_remote = 0.0_wp
550	ENDIF
551	ENDIF
552
553	!
554	!-- 3D-array for storing the dissipation, needed for calculating the sgs
555	!-- particle velocities
556	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence .OR. &
557	num_acc_per_node > 0 ) THEN
558	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
559	ENDIF
560
561	IF ( dt_dosp /= 9999999.9_wp ) THEN
562	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
563	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
564	spectrum_x = 0.0_wp
565	spectrum_y = 0.0_wp
566
567	ALLOCATE( var_d(nzb:nzt+1) )
568	var_d = 0.0_wp
569	ENDIF
570
571	!
572	!-- 1D-array for large scale subsidence velocity
573	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
574	ALLOCATE ( w_subs(nzb:nzt+1) )
575	w_subs = 0.0_wp
576	ENDIF
577
578	!
579	!-- ID-array and state-space-array for the parallel random number generator
580	IF ( random_generator == 'random-parallel' ) THEN
581	ALLOCATE ( seq_random_array(5,nysg:nyng,nxlg:nxrg) )
582	ALLOCATE ( id_random_array(0:ny,0:nx) )
583	seq_random_array = 0
584	id_random_array = 0
585	ENDIF
586
587	!
588	!-- 4D-array for storing the Rif-values at vertical walls
589	IF ( topography /= 'flat' ) THEN
590	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
591	rif_wall = 0.0_wp
592	ENDIF
593
594	!
595	!-- Arrays to store velocity data from t-dt and the phase speeds which
596	!-- are needed for radiation boundary conditions
597	IF ( outflow_l ) THEN
598	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
599	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
600	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
601	ENDIF
602	IF ( outflow_r ) THEN
603	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
604	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
605	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
606	ENDIF
607	IF ( outflow_l .OR. outflow_r ) THEN
608	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
609	c_w(nzb:nzt+1,nysg:nyng) )
610	ENDIF
611	IF ( outflow_s ) THEN
612	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
613	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
614	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
615	ENDIF
616	IF ( outflow_n ) THEN
617	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
618	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
619	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
620	ENDIF
621	IF ( outflow_s .OR. outflow_n ) THEN
622	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
623	c_w(nzb:nzt+1,nxlg:nxrg) )
624	ENDIF
625	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
626	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
627	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
628	ENDIF
629
630
631	#if ! defined( __nopointer )
632	!
633	!-- Initial assignment of the pointers
634	e => e_1; e_p => e_2; te_m => e_3
635	IF ( .NOT. neutral ) THEN
636	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
637	ELSE
638	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
639	ENDIF
640	u => u_1; u_p => u_2; tu_m => u_3
641	v => v_1; v_p => v_2; tv_m => v_3
642	w => w_1; w_p => w_2; tw_m => w_3
643
644	IF ( humidity .OR. passive_scalar ) THEN
645	q => q_1; q_p => q_2; tq_m => q_3
646	IF ( humidity ) THEN
647	vpt => vpt_1
648	IF ( cloud_physics ) THEN
649	ql => ql_1
650	IF ( icloud_scheme == 0 ) THEN
651	qc => qc_1
652	IF ( precipitation ) THEN
653	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
654	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
655	ENDIF
656	ENDIF
657	ENDIF
658	ENDIF
659	IF ( cloud_droplets ) THEN
660	ql => ql_1
661	ql_c => ql_2
662	ENDIF
663	ENDIF
664
665	IF ( ocean ) THEN
666	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
667	ENDIF
668	#endif
669
670	!
671	!-- Allocate land surface model arrays
672	IF ( land_surface ) THEN
673	CALL init_lsm_arrays
674	ENDIF
675
676	!
677	!-- Allocate arrays containing the RK coefficient for calculation of
678	!-- perturbation pressure and turbulent fluxes. At this point values are
679	!-- set for pressure calculation during initialization (where no timestep
680	!-- is done). Further below the values needed within the timestep scheme
681	!-- will be set.
682	!-- TO_DO: zeroth element added to weight_pres because in case of nesting
683	!-- pres may need to be called outside the RK-substeps. Antti will
684	!-- check if this is really required.
685	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
686	weight_pres(0:intermediate_timestep_count_max) )
687	weight_substep = 1.0_wp
688	weight_pres = 1.0_wp
689	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
690
691	CALL location_message( 'finished', .TRUE. )
692	!
693	!-- Initialize model variables
694	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
695	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
696	!
697	!-- First model run of a possible job queue.
698	!-- Initial profiles of the variables must be computes.
699	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
700
701	CALL location_message( 'initializing with 1D model profiles', .FALSE. )
702	!
703	!-- Use solutions of the 1D model as initial profiles,
704	!-- start 1D model
705	CALL init_1d_model
706	!
707	!-- Transfer initial profiles to the arrays of the 3D model
708	DO i = nxlg, nxrg
709	DO j = nysg, nyng
710	e(:,j,i) = e1d
711	kh(:,j,i) = kh1d
712	km(:,j,i) = km1d
713	pt(:,j,i) = pt_init
714	u(:,j,i) = u1d
715	v(:,j,i) = v1d
716	ENDDO
717	ENDDO
718
719	IF ( humidity .OR. passive_scalar ) THEN
720	DO i = nxlg, nxrg
721	DO j = nysg, nyng
722	q(:,j,i) = q_init
723	ENDDO
724	ENDDO
725	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
726	precipitation ) THEN
727	DO i = nxlg, nxrg
728	DO j = nysg, nyng
729	qr(:,j,i) = 0.0_wp
730	nr(:,j,i) = 0.0_wp
731	ENDDO
732	ENDDO
733	!
734	!-- Initialze nc_1d with default value
735	nc_1d(:) = nc_const
736
737	ENDIF
738	ENDIF
739
740	IF ( .NOT. constant_diffusion ) THEN
741	DO i = nxlg, nxrg
742	DO j = nysg, nyng
743	e(:,j,i) = e1d
744	ENDDO
745	ENDDO
746	!
747	!-- Store initial profiles for output purposes etc.
748	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
749
750	IF ( constant_flux_layer ) THEN
751	ol = ( zu(nzb+1) - zw(nzb) ) / ( rif1d(nzb+1) + 1.0E-20_wp )
752	ts = 0.0_wp ! could actually be computed more accurately in the
753	! 1D model. Update when opportunity arises.
754	us = us1d
755	usws = usws1d
756	vsws = vsws1d
757	ELSE
758	ts = 0.0_wp ! must be set, because used in
759	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
760	us = 0.0_wp
761	usws = 0.0_wp
762	vsws = 0.0_wp
763	ENDIF
764
765	ELSE
766	e = 0.0_wp ! must be set, because used in
767	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
768	ts = 0.0_wp
769	us = 0.0_wp
770	usws = 0.0_wp
771	vsws = 0.0_wp
772	ENDIF
773	uswst = top_momentumflux_u
774	vswst = top_momentumflux_v
775
776	!
777	!-- In every case qs = 0.0 (see also pt)
778	!-- This could actually be computed more accurately in the 1D model.
779	!-- Update when opportunity arises!
780	IF ( humidity .OR. passive_scalar ) THEN
781	qs = 0.0_wp
782	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
783	precipitation ) THEN
784	qrs = 0.0_wp
785	nrs = 0.0_wp
786	ENDIF
787	ENDIF
788
789	!
790	!-- Inside buildings set velocities back to zero
791	IF ( topography /= 'flat' ) THEN
792	DO i = nxlg, nxrg
793	DO j = nysg, nyng
794	u(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
795	v(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
796	ENDDO
797	ENDDO
798
799	!
800	!-- WARNING: The extra boundary conditions set after running the
801	!-- ------- 1D model impose an error on the divergence one layer
802	!-- below the topography; need to correct later
803	!-- ATTENTION: Provisional correction for Piacsek & Williams
804	!-- --------- advection scheme: keep u and v zero one layer below
805	!-- the topography.
806	IF ( ibc_uv_b == 1 ) THEN
807	!
808	!-- Neumann condition
809	DO i = nxl-1, nxr+1
810	DO j = nys-1, nyn+1
811	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
812	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
813	ENDDO
814	ENDDO
815
816	ENDIF
817
818	ENDIF
819
820	CALL location_message( 'finished', .TRUE. )
821
822	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
823	THEN
824
825	CALL location_message( 'initializing with constant profiles', .FALSE. )
826	!
827	!-- Overwrite initial profiles in case of nudging
828	IF ( nudging ) THEN
829	pt_init = ptnudge(:,1)
830	u_init = unudge(:,1)
831	v_init = vnudge(:,1)
832	IF ( humidity .OR. passive_scalar ) THEN
833	q_init = qnudge(:,1)
834	ENDIF
835
836	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
837	'scalars from NUDGING_DATA are used.'
838	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
839	ENDIF
840
841	!
842	!-- Use constructed initial profiles (velocity constant with height,
843	!-- temperature profile with constant gradient)
844	DO i = nxlg, nxrg
845	DO j = nysg, nyng
846	pt(:,j,i) = pt_init
847	u(:,j,i) = u_init
848	v(:,j,i) = v_init
849	ENDDO
850	ENDDO
851
852	!
853	!-- Set initial horizontal velocities at the lowest computational grid
854	!-- levels to zero in order to avoid too small time steps caused by the
855	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
856	!-- in the limiting formula!). The original values are stored to be later
857	!-- used for volume flow control.
858	! TO_DO: Antti will check if this is really required
859	!AH IF ( ibc_uv_b /= 1 ) THEN
860	!AH DO i = nxlg, nxrg
861	!AH DO j = nysg, nyng
862	!AH u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0_wp
863	!AH v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0_wp
864	!AH ENDDO
865	!AH ENDDO
866	!AH ENDIF
867
868	IF ( humidity .OR. passive_scalar ) THEN
869	DO i = nxlg, nxrg
870	DO j = nysg, nyng
871	q(:,j,i) = q_init
872	ENDDO
873	ENDDO
874	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
875	!
876	!-- Initialze nc_1d with default value
877	nc_1d(:) = nc_const
878
879	IF ( precipitation ) THEN
880	DO i = nxlg, nxrg
881	DO j = nysg, nyng
882	qr(:,j,i) = 0.0_wp
883	nr(:,j,i) = 0.0_wp
884	ENDDO
885	ENDDO
886	ENDIF
887
888	ENDIF
889	ENDIF
890
891	IF ( ocean ) THEN
892	DO i = nxlg, nxrg
893	DO j = nysg, nyng
894	sa(:,j,i) = sa_init
895	ENDDO
896	ENDDO
897	ENDIF
898
899	IF ( constant_diffusion ) THEN
900	km = km_constant
901	kh = km / prandtl_number
902	e = 0.0_wp
903	ELSEIF ( e_init > 0.0_wp ) THEN
904	DO k = nzb+1, nzt
905	km(k,:,:) = 0.1_wp * l_grid(k) * SQRT( e_init )
906	ENDDO
907	km(nzb,:,:) = km(nzb+1,:,:)
908	km(nzt+1,:,:) = km(nzt,:,:)
909	kh = km / prandtl_number
910	e = e_init
911	ELSE
912	IF ( .NOT. ocean ) THEN
913	kh = 0.01_wp ! there must exist an initial diffusion, because
914	km = 0.01_wp ! otherwise no TKE would be produced by the
915	! production terms, as long as not yet
916	! e = (u/cm)*2 at k=nzb+1
917	ELSE
918	kh = 0.00001_wp
919	km = 0.00001_wp
920	ENDIF
921	e = 0.0_wp
922	ENDIF
923	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min
924	ts = 0.0_wp
925	us = 0.0_wp
926	usws = 0.0_wp
927	uswst = top_momentumflux_u
928	vsws = 0.0_wp
929	vswst = top_momentumflux_v
930	IF ( humidity .OR. passive_scalar ) qs = 0.0_wp
931
932	!
933	!-- Compute initial temperature field and other constants used in case
934	!-- of a sloping surface
935	IF ( sloping_surface ) CALL init_slope
936
937	CALL location_message( 'finished', .TRUE. )
938
939	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
940	THEN
941
942	CALL location_message( 'initializing by user', .FALSE. )
943	!
944	!-- Initialization will completely be done by the user
945	CALL user_init_3d_model
946
947	CALL location_message( 'finished', .TRUE. )
948
949	ENDIF
950
951	CALL location_message( 'initializing statistics, boundary conditions, etc.', &
952	.FALSE. )
953
954	!
955	!-- Bottom boundary
956	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
957	u(nzb,:,:) = 0.0_wp
958	v(nzb,:,:) = 0.0_wp
959	ENDIF
960
961	!
962	!-- Apply channel flow boundary condition
963	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
964	u(nzt+1,:,:) = 0.0_wp
965	v(nzt+1,:,:) = 0.0_wp
966	ENDIF
967
968	!
969	!-- Calculate virtual potential temperature
970	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
971
972	!
973	!-- Store initial profiles for output purposes etc.
974	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
975	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
976	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
977	hom(nzb,1,5,:) = 0.0_wp
978	hom(nzb,1,6,:) = 0.0_wp
979	ENDIF
980	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
981	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
982	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
983
984	IF ( ocean ) THEN
985	!
986	!-- Store initial salinity profile
987	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
988	ENDIF
989
990	IF ( humidity ) THEN
991	!
992	!-- Store initial profile of total water content, virtual potential
993	!-- temperature
994	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
995	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
996	IF ( cloud_physics .OR. cloud_droplets ) THEN
997	!
998	!-- Store initial profile of specific humidity and potential
999	!-- temperature
1000	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1001	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1002	ENDIF
1003	ENDIF
1004
1005	IF ( passive_scalar ) THEN
1006	!
1007	!-- Store initial scalar profile
1008	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1009	ENDIF
1010
1011	!
1012	!-- Initialize the random number generators (from numerical recipes)
1013	CALL random_function_ini
1014
1015	IF ( random_generator == 'random-parallel' ) THEN
1016	!-- Asigning an ID to every vertical gridpoint column
1017	!-- dependig on the ensemble run number.
1018	random_dummy=1
1019	DO j=0,ny
1020	DO i=0,nx
1021	id_random_array(j,i) = random_dummy + 1E6 &
1022	* ( ensemble_member_nr - 1000 )
1023	random_dummy = random_dummy + 1
1024	END DO
1025	ENDDO
1026	!-- Initializing with random_seed_parallel for every vertical
1027	!-- gridpoint column.
1028	random_dummy=0
1029	DO j = nysg, nyng
1030	DO i = nxlg, nxrg
1031	CALL random_seed_parallel (random_sequence=id_random_array(j, i))
1032	CALL random_number_parallel (random_dummy)
1033	CALL random_seed_parallel (get=seq_random_array(:, j, i))
1034	END DO
1035	ENDDO
1036	ENDIF
1037
1038	!
1039	!-- Initialize fluxes at bottom surface
1040	IF ( use_surface_fluxes ) THEN
1041
1042	IF ( constant_heatflux ) THEN
1043	!
1044	!-- Heat flux is prescribed
1045	IF ( random_heatflux ) THEN
1046	CALL disturb_heatflux
1047	ELSE
1048	shf = surface_heatflux
1049	!
1050	!-- Initialize shf with data from external file LSF_DATA
1051	IF ( large_scale_forcing .AND. lsf_surf ) THEN
1052	CALL ls_forcing_surf ( simulated_time )
1053	ENDIF
1054
1055	!
1056	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
1057	IF ( TRIM( topography ) /= 'flat' ) THEN
1058	DO i = nxlg, nxrg
1059	DO j = nysg, nyng
1060	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1061	shf(j,i) = wall_heatflux(0)
1062	ENDIF
1063	ENDDO
1064	ENDDO
1065	ENDIF
1066	ENDIF
1067	ENDIF
1068
1069	!
1070	!-- Determine the near-surface water flux
1071	IF ( humidity .OR. passive_scalar ) THEN
1072	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1073	precipitation ) THEN
1074	qrsws = 0.0_wp
1075	nrsws = 0.0_wp
1076	ENDIF
1077	IF ( constant_waterflux ) THEN
1078	qsws = surface_waterflux
1079	!
1080	!-- Over topography surface_waterflux is replaced by
1081	!-- wall_humidityflux(0)
1082	IF ( TRIM( topography ) /= 'flat' ) THEN
1083	wall_qflux = wall_humidityflux
1084	DO i = nxlg, nxrg
1085	DO j = nysg, nyng
1086	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1087	qsws(j,i) = wall_qflux(0)
1088	ENDIF
1089	ENDDO
1090	ENDDO
1091	ENDIF
1092	ENDIF
1093	ENDIF
1094
1095	ENDIF
1096
1097	!
1098	!-- Initialize fluxes at top surface
1099	!-- Currently, only the heatflux and salinity flux can be prescribed.
1100	!-- The latent flux is zero in this case!
1101	IF ( use_top_fluxes ) THEN
1102
1103	IF ( constant_top_heatflux ) THEN
1104	!
1105	!-- Heat flux is prescribed
1106	tswst = top_heatflux
1107
1108	IF ( humidity .OR. passive_scalar ) THEN
1109	qswst = 0.0_wp
1110	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1111	precipitation ) THEN
1112	nrswst = 0.0_wp
1113	qrswst = 0.0_wp
1114	ENDIF
1115	ENDIF
1116
1117	IF ( ocean ) THEN
1118	saswsb = bottom_salinityflux
1119	saswst = top_salinityflux
1120	ENDIF
1121	ENDIF
1122
1123	!
1124	!-- Initialization in case of a coupled model run
1125	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1126	tswst = 0.0_wp
1127	ENDIF
1128
1129	ENDIF
1130
1131	!
1132	!-- Initialize Prandtl layer quantities
1133	IF ( constant_flux_layer ) THEN
1134
1135	z0 = roughness_length
1136	z0h = z0h_factor * z0
1137	z0q = z0h_factor * z0
1138
1139	IF ( .NOT. constant_heatflux ) THEN
1140	!
1141	!-- Surface temperature is prescribed. Here the heat flux cannot be
1142	!-- simply estimated, because therefore ol, u* and theta* would have
1143	!-- to be computed by iteration. This is why the heat flux is assumed
1144	!-- to be zero before the first time step. It approaches its correct
1145	!-- value in the course of the first few time steps.
1146	shf = 0.0_wp
1147	ENDIF
1148
1149	IF ( humidity .OR. passive_scalar ) THEN
1150	IF ( .NOT. constant_waterflux ) qsws = 0.0_wp
1151	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1152	precipitation ) THEN
1153	qrsws = 0.0_wp
1154	nrsws = 0.0_wp
1155	ENDIF
1156	ENDIF
1157
1158	ENDIF
1159
1160	!
1161	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1162	!-- the reference state will be set (overwritten) in init_ocean)
1163	IF ( use_single_reference_value ) THEN
1164	IF ( .NOT. humidity ) THEN
1165	ref_state(:) = pt_reference
1166	ELSE
1167	ref_state(:) = vpt_reference
1168	ENDIF
1169	ELSE
1170	IF ( .NOT. humidity ) THEN
1171	ref_state(:) = pt_init(:)
1172	ELSE
1173	ref_state(:) = vpt(:,nys,nxl)
1174	ENDIF
1175	ENDIF
1176
1177	!
1178	!-- For the moment, vertical velocity is zero
1179	w = 0.0_wp
1180
1181	!
1182	!-- Initialize array sums (must be defined in first call of pres)
1183	sums = 0.0_wp
1184
1185	!
1186	!-- In case of iterative solvers, p must get an initial value
1187	IF ( psolver(1:9) == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
1188
1189	!
1190	!-- Treating cloud physics, liquid water content and precipitation amount
1191	!-- are zero at beginning of the simulation
1192	IF ( cloud_physics ) THEN
1193	ql = 0.0_wp
1194	IF ( precipitation ) precipitation_amount = 0.0_wp
1195	IF ( icloud_scheme == 0 ) THEN
1196	qc = 0.0_wp
1197	nc_1d = nc_const
1198	ENDIF
1199	ENDIF
1200	!
1201	!-- Impose vortex with vertical axis on the initial velocity profile
1202	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1203	CALL init_rankine
1204	ENDIF
1205
1206	!
1207	!-- Impose temperature anomaly (advection test only)
1208	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1209	CALL init_pt_anomaly
1210	ENDIF
1211
1212	!
1213	!-- If required, change the surface temperature at the start of the 3D run
1214	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
1215	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1216	ENDIF
1217
1218	!
1219	!-- If required, change the surface humidity/scalar at the start of the 3D
1220	!-- run
1221	IF ( ( humidity .OR. passive_scalar ) .AND. &
1222	q_surface_initial_change /= 0.0_wp ) THEN
1223	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1224	ENDIF
1225
1226	!
1227	!-- Initialize old and new time levels.
1228	te_m = 0.0_wp; tpt_m = 0.0_wp; tu_m = 0.0_wp; tv_m = 0.0_wp; tw_m = 0.0_wp
1229	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1230
1231	IF ( humidity .OR. passive_scalar ) THEN
1232	tq_m = 0.0_wp
1233	q_p = q
1234	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1235	precipitation ) THEN
1236	tqr_m = 0.0_wp
1237	qr_p = qr
1238	tnr_m = 0.0_wp
1239	nr_p = nr
1240	ENDIF
1241	ENDIF
1242
1243	IF ( ocean ) THEN
1244	tsa_m = 0.0_wp
1245	sa_p = sa
1246	ENDIF
1247
1248	CALL location_message( 'finished', .TRUE. )
1249
1250	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1251	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1252	THEN
1253
1254	CALL location_message( 'initializing in case of restart / cyclic_fill', &
1255	.FALSE. )
1256	!
1257	!-- When reading data for cyclic fill of 3D prerun data files, read
1258	!-- some of the global variables from the restart file which are required
1259	!-- for initializing the inflow
1260	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1261
1262	DO i = 0, io_blocks-1
1263	IF ( i == io_group ) THEN
1264	CALL read_parts_of_var_list
1265	CALL close_file( 13 )
1266	ENDIF
1267	#if defined( __parallel )
1268	CALL MPI_BARRIER( comm2d, ierr )
1269	#endif
1270	ENDDO
1271
1272	ENDIF
1273
1274	!
1275	!-- Read binary data from restart file
1276	DO i = 0, io_blocks-1
1277	IF ( i == io_group ) THEN
1278	CALL read_3d_binary
1279	ENDIF
1280	#if defined( __parallel )
1281	CALL MPI_BARRIER( comm2d, ierr )
1282	#endif
1283	ENDDO
1284
1285	!
1286	!-- Initialization of the turbulence recycling method
1287	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1288	turbulent_inflow ) THEN
1289	!
1290	!-- First store the profiles to be used at the inflow.
1291	!-- These profiles are the (temporally) and horizontally averaged vertical
1292	!-- profiles from the prerun. Alternatively, prescribed profiles
1293	!-- for u,v-components can be used.
1294	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,6) )
1295
1296	IF ( use_prescribed_profile_data ) THEN
1297	mean_inflow_profiles(:,1) = u_init ! u
1298	mean_inflow_profiles(:,2) = v_init ! v
1299	ELSE
1300	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1301	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1302	ENDIF
1303	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1304	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1305	mean_inflow_profiles(:,6) = hom_sum(:,41,0) ! q
1306
1307	!
1308	!-- If necessary, adjust the horizontal flow field to the prescribed
1309	!-- profiles
1310	IF ( use_prescribed_profile_data ) THEN
1311	DO i = nxlg, nxrg
1312	DO j = nysg, nyng
1313	DO k = nzb, nzt+1
1314	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1315	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1316	ENDDO
1317	ENDDO
1318	ENDDO
1319	ENDIF
1320
1321	!
1322	!-- Use these mean profiles at the inflow (provided that Dirichlet
1323	!-- conditions are used)
1324	IF ( inflow_l ) THEN
1325	DO j = nysg, nyng
1326	DO k = nzb, nzt+1
1327	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1328	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1329	w(k,j,nxlg:-1) = 0.0_wp
1330	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1331	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1332	IF ( humidity .OR. passive_scalar ) &
1333	q(k,j,nxlg:-1) = mean_inflow_profiles(k,6)
1334	ENDDO
1335	ENDDO
1336	ENDIF
1337
1338	!
1339	!-- Calculate the damping factors to be used at the inflow. For a
1340	!-- turbulent inflow the turbulent fluctuations have to be limited
1341	!-- vertically because otherwise the turbulent inflow layer will grow
1342	!-- in time.
1343	IF ( inflow_damping_height == 9999999.9_wp ) THEN
1344	!
1345	!-- Default: use the inversion height calculated by the prerun; if
1346	!-- this is zero, inflow_damping_height must be explicitly
1347	!-- specified.
1348	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
1349	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1350	ELSE
1351	WRITE( message_string, * ) 'inflow_damping_height must be ', &
1352	'explicitly specified because&the inversion height ', &
1353	'calculated by the prerun is zero.'
1354	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1355	ENDIF
1356
1357	ENDIF
1358
1359	IF ( inflow_damping_width == 9999999.9_wp ) THEN
1360	!
1361	!-- Default for the transition range: one tenth of the undamped
1362	!-- layer
1363	inflow_damping_width = 0.1_wp * inflow_damping_height
1364
1365	ENDIF
1366
1367	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1368
1369	DO k = nzb, nzt+1
1370
1371	IF ( zu(k) <= inflow_damping_height ) THEN
1372	inflow_damping_factor(k) = 1.0_wp
1373	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1374	inflow_damping_factor(k) = 1.0_wp - &
1375	( zu(k) - inflow_damping_height ) / &
1376	inflow_damping_width
1377	ELSE
1378	inflow_damping_factor(k) = 0.0_wp
1379	ENDIF
1380
1381	ENDDO
1382
1383	ENDIF
1384
1385	!
1386	!-- Inside buildings set velocities and TKE back to zero
1387	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1388	topography /= 'flat' ) THEN
1389	!
1390	!-- Inside buildings set velocities and TKE back to zero.
1391	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1392	!-- maybe revise later.
1393	DO i = nxlg, nxrg
1394	DO j = nysg, nyng
1395	u (nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1396	v (nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1397	w (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1398	e (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1399	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1400	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1401	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1402	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1403	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1404	ENDDO
1405	ENDDO
1406
1407	ENDIF
1408
1409	!
1410	!-- Calculate initial temperature field and other constants used in case
1411	!-- of a sloping surface
1412	IF ( sloping_surface ) CALL init_slope
1413
1414	!
1415	!-- Initialize new time levels (only done in order to set boundary values
1416	!-- including ghost points)
1417	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1418	IF ( humidity .OR. passive_scalar ) THEN
1419	q_p = q
1420	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1421	precipitation ) THEN
1422	qr_p = qr
1423	nr_p = nr
1424	ENDIF
1425	ENDIF
1426	IF ( ocean ) sa_p = sa
1427
1428	!
1429	!-- Allthough tendency arrays are set in prognostic_equations, they have
1430	!-- have to be predefined here because they are used (but multiplied with 0)
1431	!-- there before they are set.
1432	te_m = 0.0_wp; tpt_m = 0.0_wp; tu_m = 0.0_wp; tv_m = 0.0_wp; tw_m = 0.0_wp
1433	IF ( humidity .OR. passive_scalar ) THEN
1434	tq_m = 0.0_wp
1435	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1436	precipitation ) THEN
1437	tqr_m = 0.0_wp
1438	tnr_m = 0.0_wp
1439	ENDIF
1440	ENDIF
1441	IF ( ocean ) tsa_m = 0.0_wp
1442
1443	CALL location_message( 'finished', .TRUE. )
1444
1445	ELSE
1446	!
1447	!-- Actually this part of the programm should not be reached
1448	message_string = 'unknown initializing problem'
1449	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1450	ENDIF
1451
1452
1453	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1454	!
1455	!-- Initialize old timelevels needed for radiation boundary conditions
1456	IF ( outflow_l ) THEN
1457	u_m_l(:,:,:) = u(:,:,1:2)
1458	v_m_l(:,:,:) = v(:,:,0:1)
1459	w_m_l(:,:,:) = w(:,:,0:1)
1460	ENDIF
1461	IF ( outflow_r ) THEN
1462	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1463	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1464	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1465	ENDIF
1466	IF ( outflow_s ) THEN
1467	u_m_s(:,:,:) = u(:,0:1,:)
1468	v_m_s(:,:,:) = v(:,1:2,:)
1469	w_m_s(:,:,:) = w(:,0:1,:)
1470	ENDIF
1471	IF ( outflow_n ) THEN
1472	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1473	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1474	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1475	ENDIF
1476
1477	ENDIF
1478
1479	!
1480	!-- Calculate the initial volume flow at the right and north boundary
1481	IF ( conserve_volume_flow ) THEN
1482
1483	IF ( use_prescribed_profile_data ) THEN
1484
1485	volume_flow_initial_l = 0.0_wp
1486	volume_flow_area_l = 0.0_wp
1487
1488	IF ( nxr == nx ) THEN
1489	DO j = nys, nyn
1490	DO k = nzb_2d(j,nx)+1, nzt
1491	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1492	u_init(k) * dzw(k)
1493	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1494	ENDDO
1495	ENDDO
1496	ENDIF
1497
1498	IF ( nyn == ny ) THEN
1499	DO i = nxl, nxr
1500	DO k = nzb_2d(ny,i)+1, nzt
1501	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1502	v_init(k) * dzw(k)
1503	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1504	ENDDO
1505	ENDDO
1506	ENDIF
1507
1508	#if defined( __parallel )
1509	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1510	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1511	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1512	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1513
1514	#else
1515	volume_flow_initial = volume_flow_initial_l
1516	volume_flow_area = volume_flow_area_l
1517	#endif
1518
1519	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1520
1521	volume_flow_initial_l = 0.0_wp
1522	volume_flow_area_l = 0.0_wp
1523
1524	IF ( nxr == nx ) THEN
1525	DO j = nys, nyn
1526	DO k = nzb_2d(j,nx)+1, nzt
1527	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1528	hom_sum(k,1,0) * dzw(k)
1529	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1530	ENDDO
1531	ENDDO
1532	ENDIF
1533
1534	IF ( nyn == ny ) THEN
1535	DO i = nxl, nxr
1536	DO k = nzb_2d(ny,i)+1, nzt
1537	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1538	hom_sum(k,2,0) * dzw(k)
1539	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1540	ENDDO
1541	ENDDO
1542	ENDIF
1543
1544	#if defined( __parallel )
1545	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1546	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1547	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1548	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1549
1550	#else
1551	volume_flow_initial = volume_flow_initial_l
1552	volume_flow_area = volume_flow_area_l
1553	#endif
1554
1555	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1556
1557	volume_flow_initial_l = 0.0_wp
1558	volume_flow_area_l = 0.0_wp
1559
1560	IF ( nxr == nx ) THEN
1561	DO j = nys, nyn
1562	DO k = nzb_2d(j,nx)+1, nzt
1563	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1564	u(k,j,nx) * dzw(k)
1565	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1566	ENDDO
1567	ENDDO
1568	ENDIF
1569
1570	IF ( nyn == ny ) THEN
1571	DO i = nxl, nxr
1572	DO k = nzb_2d(ny,i)+1, nzt
1573	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1574	v(k,ny,i) * dzw(k)
1575	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1576	ENDDO
1577	ENDDO
1578	ENDIF
1579
1580	#if defined( __parallel )
1581	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1582	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1583	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1584	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1585
1586	#else
1587	volume_flow_initial = volume_flow_initial_l
1588	volume_flow_area = volume_flow_area_l
1589	#endif
1590
1591	ENDIF
1592
1593	!
1594	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1595	!-- from u\|v_bulk instead
1596	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1597	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1598	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1599	ENDIF
1600
1601	ENDIF
1602
1603	!
1604	!-- Initialize quantities for special advections schemes
1605	CALL init_advec
1606
1607	!
1608	!-- Impose random perturbation on the horizontal velocity field and then
1609	!-- remove the divergences from the velocity field at the initial stage
1610	IF ( create_disturbances .AND. disturbance_energy_limit /= 0.0_wp .AND. &
1611	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1612	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1613
1614	CALL location_message( 'creating initial disturbances', .FALSE. )
1615	CALL disturb_field( nzb_u_inner, tend, u )
1616	CALL disturb_field( nzb_v_inner, tend, v )
1617	CALL location_message( 'finished', .TRUE. )
1618
1619	CALL location_message( 'calling pressure solver', .FALSE. )
1620	n_sor = nsor_ini
1621	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1622	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1623	!$acc copyin( weight_pres, weight_substep ) &
1624	!$acc copy( tri, tric, u, v, w )
1625	CALL pres
1626	!$acc end data
1627	n_sor = nsor
1628	CALL location_message( 'finished', .TRUE. )
1629
1630	ENDIF
1631
1632	!
1633	!-- If required, initialize quantities needed for the plant canopy model
1634	IF ( plant_canopy ) CALL init_plant_canopy
1635
1636	!
1637	!-- If required, initialize dvrp-software
1638	IF ( dt_dvrp /= 9999999.9_wp ) CALL init_dvrp
1639
1640	IF ( ocean ) THEN
1641	!
1642	!-- Initialize quantities needed for the ocean model
1643	CALL init_ocean
1644
1645	ELSE
1646	!
1647	!-- Initialize quantities for handling cloud physics
1648	!-- This routine must be called before lpm_init, because
1649	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1650	!-- lpm_init) is not defined.
1651	CALL init_cloud_physics
1652	ENDIF
1653
1654	!
1655	!-- If required, initialize particles
1656	IF ( particle_advection ) CALL lpm_init
1657
1658	!
1659	!-- If required, initialize quantities needed for the LSM
1660	IF ( land_surface ) THEN
1661	CALL location_message( 'initializing land surface model', .FALSE. )
1662	CALL init_lsm
1663	CALL location_message( 'finished', .TRUE. )
1664	ENDIF
1665
1666	!
1667	!-- Initialize surface layer (done after LSM as roughness length are required
1668	!-- for initialization
1669	IF ( constant_flux_layer ) THEN
1670	CALL location_message( 'initializing surface layer', .FALSE. )
1671	CALL init_surface_layer_fluxes
1672	CALL location_message( 'finished', .TRUE. )
1673	ENDIF
1674
1675	!
1676	!-- If required, initialize radiation model
1677	IF ( radiation ) THEN
1678	CALL location_message( 'initializing radiation model', .FALSE. )
1679	CALL init_radiation
1680	CALL location_message( 'finished', .TRUE. )
1681	ENDIF
1682
1683	!
1684	!-- Initialize the ws-scheme.
1685	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1686
1687	!
1688	!-- Setting weighting factors for calculation of perturbation pressure
1689	!-- and turbulent quantities from the RK substeps
1690	!-- TO_DO: zeroth element is added to weight_pres because in nesting pres
1691	!-- may need to be called outside the RK-substeps
1692	weight_pres(0) = 1.0_wp
1693	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1694
1695	weight_substep(1) = 1._wp/6._wp
1696	weight_substep(2) = 3._wp/10._wp
1697	weight_substep(3) = 8._wp/15._wp
1698
1699	weight_pres(1) = 1._wp/3._wp
1700	weight_pres(2) = 5._wp/12._wp
1701	weight_pres(3) = 1._wp/4._wp
1702
1703	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1704
1705	weight_substep(1) = 1._wp/2._wp
1706	weight_substep(2) = 1._wp/2._wp
1707
1708	weight_pres(1) = 1._wp/2._wp
1709	weight_pres(2) = 1._wp/2._wp
1710
1711	ELSE ! for Euler-method
1712
1713	weight_substep(1) = 1.0_wp
1714	weight_pres(1) = 1.0_wp
1715
1716	ENDIF
1717
1718	!
1719	!-- Initialize Rayleigh damping factors
1720	rdf = 0.0_wp
1721	rdf_sc = 0.0_wp
1722	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
1723	IF ( .NOT. ocean ) THEN
1724	DO k = nzb+1, nzt
1725	IF ( zu(k) >= rayleigh_damping_height ) THEN
1726	rdf(k) = rayleigh_damping_factor * &
1727	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
1728	/ ( zu(nzt) - rayleigh_damping_height ) ) &
1729	)**2
1730	ENDIF
1731	ENDDO
1732	ELSE
1733	DO k = nzt, nzb+1, -1
1734	IF ( zu(k) <= rayleigh_damping_height ) THEN
1735	rdf(k) = rayleigh_damping_factor * &
1736	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
1737	/ ( rayleigh_damping_height - zu(nzb+1) ) ) &
1738	)**2
1739	ENDIF
1740	ENDDO
1741	ENDIF
1742	ENDIF
1743	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1744
1745	!
1746	!-- Initialize the starting level and the vertical smoothing factor used for
1747	!-- the external pressure gradient
1748	dp_smooth_factor = 1.0_wp
1749	IF ( dp_external ) THEN
1750	!
1751	!-- Set the starting level dp_level_ind_b only if it has not been set before
1752	!-- (e.g. in init_grid).
1753	IF ( dp_level_ind_b == 0 ) THEN
1754	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1755	dp_level_ind_b = ind_array(1) - 1 + nzb
1756	! MINLOC uses lower array bound 1
1757	ENDIF
1758	IF ( dp_smooth ) THEN
1759	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
1760	DO k = dp_level_ind_b+1, nzt
1761	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
1762	( REAL( k - dp_level_ind_b, KIND=wp ) / &
1763	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
1764	ENDDO
1765	ENDIF
1766	ENDIF
1767
1768	!
1769	!-- Initialize damping zone for the potential temperature in case of
1770	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1771	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1772	ptdf_x = 0.0_wp
1773	ptdf_y = 0.0_wp
1774	IF ( bc_lr_dirrad ) THEN
1775	DO i = nxl, nxr
1776	IF ( ( i * dx ) < pt_damping_width ) THEN
1777	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
1778	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
1779	REAL( pt_damping_width, KIND=wp ) ) ) )**2
1780	ENDIF
1781	ENDDO
1782	ELSEIF ( bc_lr_raddir ) THEN
1783	DO i = nxl, nxr
1784	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1785	ptdf_x(i) = pt_damping_factor * &
1786	SIN( pi * 0.5_wp * &
1787	( ( i - nx ) * dx + pt_damping_width ) / &
1788	REAL( pt_damping_width, KIND=wp ) )**2
1789	ENDIF
1790	ENDDO
1791	ELSEIF ( bc_ns_dirrad ) THEN
1792	DO j = nys, nyn
1793	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1794	ptdf_y(j) = pt_damping_factor * &
1795	SIN( pi * 0.5_wp * &
1796	( ( j - ny ) * dy + pt_damping_width ) / &
1797	REAL( pt_damping_width, KIND=wp ) )**2
1798	ENDIF
1799	ENDDO
1800	ELSEIF ( bc_ns_raddir ) THEN
1801	DO j = nys, nyn
1802	IF ( ( j * dy ) < pt_damping_width ) THEN
1803	ptdf_y(j) = pt_damping_factor * &
1804	SIN( pi * 0.5_wp * &
1805	( pt_damping_width - j * dy ) / &
1806	REAL( pt_damping_width, KIND=wp ) )**2
1807	ENDIF
1808	ENDDO
1809	ENDIF
1810
1811	!
1812	!-- Initialize local summation arrays for routine flow_statistics.
1813	!-- This is necessary because they may not yet have been initialized when they
1814	!-- are called from flow_statistics (or - depending on the chosen model run -
1815	!-- are never initialized)
1816	sums_divnew_l = 0.0_wp
1817	sums_divold_l = 0.0_wp
1818	sums_l_l = 0.0_wp
1819	sums_up_fraction_l = 0.0_wp
1820	sums_wsts_bc_l = 0.0_wp
1821
1822	!
1823	!-- Pre-set masks for regional statistics. Default is the total model domain.
1824	!-- Ghost points are excluded because counting values at the ghost boundaries
1825	!-- would bias the statistics
1826	rmask = 1.0_wp
1827	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
1828	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
1829
1830	!
1831	!-- User-defined initializing actions. Check afterwards, if maximum number
1832	!-- of allowed timeseries is exceeded
1833	CALL user_init
1834
1835	IF ( dots_num > dots_max ) THEN
1836	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1837	' its maximum of dots_max = ', dots_max, &
1838	' &Please increase dots_max in modules.f90.'
1839	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1840	ENDIF
1841
1842	!
1843	!-- Input binary data file is not needed anymore. This line must be placed
1844	!-- after call of user_init!
1845	CALL close_file( 13 )
1846
1847	!
1848	!-- Compute total sum of active mask grid points
1849	!-- and the mean surface level height for each statistic region
1850	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1851	!-- total domain
1852	!-- ngp_3d: number of grid points of the total domain
1853	ngp_2dh_outer_l = 0
1854	ngp_2dh_outer = 0
1855	ngp_2dh_s_inner_l = 0
1856	ngp_2dh_s_inner = 0
1857	ngp_2dh_l = 0
1858	ngp_2dh = 0
1859	ngp_3d_inner_l = 0.0_wp
1860	ngp_3d_inner = 0
1861	ngp_3d = 0
1862	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1863
1864	mean_surface_level_height = 0.0_wp
1865	mean_surface_level_height_l = 0.0_wp
1866
1867	DO sr = 0, statistic_regions
1868	DO i = nxl, nxr
1869	DO j = nys, nyn
1870	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
1871	!
1872	!-- All xy-grid points
1873	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1874	mean_surface_level_height_l(sr) = mean_surface_level_height_l(sr) &
1875	+ zw(nzb_s_inner(j,i))
1876	!
1877	!-- xy-grid points above topography
1878	DO k = nzb_s_outer(j,i), nz + 1
1879	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1880	ENDDO
1881	DO k = nzb_s_inner(j,i), nz + 1
1882	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1883	ENDDO
1884	!
1885	!-- All grid points of the total domain above topography
1886	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) &
1887	+ ( nz - nzb_s_inner(j,i) + 2 )
1888	ENDIF
1889	ENDDO
1890	ENDDO
1891	ENDDO
1892
1893	sr = statistic_regions + 1
1894	#if defined( __parallel )
1895	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1896	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1897	comm2d, ierr )
1898	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1899	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1900	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1901	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1902	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1903	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1904	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1905	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1906	MPI_SUM, comm2d, ierr )
1907	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1908	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1909	CALL MPI_ALLREDUCE( mean_surface_level_height_l(0), &
1910	mean_surface_level_height(0), sr, MPI_REAL, &
1911	MPI_SUM, comm2d, ierr )
1912	mean_surface_level_height = mean_surface_level_height / REAL( ngp_2dh )
1913	#else
1914	ngp_2dh = ngp_2dh_l
1915	ngp_2dh_outer = ngp_2dh_outer_l
1916	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1917	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1918	mean_surface_level_height = mean_surface_level_height_l / REAL( ngp_2dh_l )
1919	#endif
1920
1921	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1922	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1923
1924	!
1925	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1926	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1927	!-- the respective subdomain lie below the surface topography
1928	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1929	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1930	ngp_3d_inner(:) )
1931	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1932
1933	DEALLOCATE( mean_surface_level_height_l, ngp_2dh_l, ngp_2dh_outer_l, &
1934	ngp_3d_inner_l, ngp_3d_inner_tmp )
1935
1936	CALL location_message( 'leaving init_3d_model', .TRUE. )
1937
1938	END SUBROUTINE init_3d_model

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