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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1815

Last change on this file since 1815 was 1815, checked in by raasch, 8 years ago
cpp-switches removed + cpp-bugfixes + zero-settings for velocities inside topography re-activated
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	! zero-settings for velocities inside topography re-activated (was deactivated
22	! in r1762)
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: init_3d_model.f90 1815 2016-04-06 13:49:59Z raasch $
27	!
28	! 1788 2016-03-10 11:01:04Z maronga
29	! Added z0q.
30	! Syntax layout improved.
31	!
32	! 1783 2016-03-06 18:36:17Z raasch
33	! netcdf module name changed + related changes
34	!
35	! 1764 2016-02-28 12:45:19Z raasch
36	! bugfix: increase size of volume_flow_area_l and volume_flow_initial_l by 1
37	!
38	! 1762 2016-02-25 12:31:13Z hellstea
39	! Introduction of nested domain feature
40	!
41	! 1738 2015-12-18 13:56:05Z raasch
42	! calculate mean surface level height for each statistic region
43	!
44	! 1734 2015-12-02 12:17:12Z raasch
45	! no initial disturbances in case that the disturbance energy limit has been
46	! set zero
47	!
48	! 1707 2015-11-02 15:24:52Z maronga
49	! Bugfix: transfer of Richardson number from 1D model to Obukhov length caused
50	! devision by zero in neutral stratification
51	!
52	! 1691 2015-10-26 16:17:44Z maronga
53	! Call to init_surface_layer added. rif is replaced by ol and zeta.
54	!
55	! 1682 2015-10-07 23:56:08Z knoop
56	! Code annotations made doxygen readable
57	!
58	! 1615 2015-07-08 18:49:19Z suehring
59	! Enable turbulent inflow for passive_scalar and humidity
60	!
61	! 1585 2015-04-30 07:05:52Z maronga
62	! Initialization of radiation code is now done after LSM initializtion
63	!
64	! 1575 2015-03-27 09:56:27Z raasch
65	! adjustments for psolver-queries
66	!
67	! 1551 2015-03-03 14:18:16Z maronga
68	! Allocation of land surface arrays is now done in the subroutine init_lsm_arrays,
69	! which is part of land_surface_model.
70	!
71	! 1507 2014-12-10 12:14:18Z suehring
72	! Bugfix: set horizontal velocity components to zero inside topography
73	!
74	! 1496 2014-12-02 17:25:50Z maronga
75	! Added initialization of the land surface and radiation schemes
76	!
77	! 1484 2014-10-21 10:53:05Z kanani
78	! Changes due to new module structure of the plant canopy model:
79	! canopy-related initialization (e.g. lad and canopy_heat_flux) moved to new
80	! subroutine init_plant_canopy within the module plant_canopy_model_mod,
81	! call of subroutine init_plant_canopy added.
82	!
83	! 1431 2014-07-15 14:47:17Z suehring
84	! var_d added, in order to normalize spectra.
85	!
86	! 1429 2014-07-15 12:53:45Z knoop
87	! Ensemble run capability added to parallel random number generator
88	!
89	! 1411 2014-05-16 18:01:51Z suehring
90	! Initial horizontal velocity profiles were not set to zero at the first vertical
91	! grid level in case of non-cyclic lateral boundary conditions.
92	!
93	! 1406 2014-05-16 13:47:01Z raasch
94	! bugfix: setting of initial velocities at k=1 to zero not in case of a
95	! no-slip boundary condition for uv
96	!
97	! 1402 2014-05-09 14:25:13Z raasch
98	! location messages modified
99	!
100	! 1400 2014-05-09 14:03:54Z knoop
101	! Parallel random number generator added
102	!
103	! 1384 2014-05-02 14:31:06Z raasch
104	! location messages added
105	!
106	! 1361 2014-04-16 15:17:48Z hoffmann
107	! tend_* removed
108	! Bugfix: w_subs is not allocated anymore if it is already allocated
109	!
110	! 1359 2014-04-11 17:15:14Z hoffmann
111	! module lpm_init_mod added to use statements, because lpm_init has become a
112	! module
113	!
114	! 1353 2014-04-08 15:21:23Z heinze
115	! REAL constants provided with KIND-attribute
116	!
117	! 1340 2014-03-25 19:45:13Z kanani
118	! REAL constants defined as wp-kind
119	!
120	! 1322 2014-03-20 16:38:49Z raasch
121	! REAL constants defined as wp-kind
122	! module interfaces removed
123	!
124	! 1320 2014-03-20 08:40:49Z raasch
125	! ONLY-attribute added to USE-statements,
126	! kind-parameters added to all INTEGER and REAL declaration statements,
127	! kinds are defined in new module kinds,
128	! revision history before 2012 removed,
129	! comment fields (!:) to be used for variable explanations added to
130	! all variable declaration statements
131	!
132	! 1316 2014-03-17 07:44:59Z heinze
133	! Bugfix: allocation of w_subs
134	!
135	! 1299 2014-03-06 13:15:21Z heinze
136	! Allocate w_subs due to extension of large scale subsidence in combination
137	! with large scale forcing data (LSF_DATA)
138	!
139	! 1241 2013-10-30 11:36:58Z heinze
140	! Overwrite initial profiles in case of nudging
141	! Inititialize shf and qsws in case of large_scale_forcing
142	!
143	! 1221 2013-09-10 08:59:13Z raasch
144	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
145	! copy
146	!
147	! 1212 2013-08-15 08:46:27Z raasch
148	! array tri is allocated and included in data copy statement
149	!
150	! 1195 2013-07-01 12:27:57Z heinze
151	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
152	!
153	! 1179 2013-06-14 05:57:58Z raasch
154	! allocate and set ref_state to be used in buoyancy terms
155	!
156	! 1171 2013-05-30 11:27:45Z raasch
157	! diss array is allocated with full size if accelerator boards are used
158	!
159	! 1159 2013-05-21 11:58:22Z fricke
160	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
161	!
162	! 1153 2013-05-10 14:33:08Z raasch
163	! diss array is allocated with dummy elements even if it is not needed
164	! (required by PGI 13.4 / CUDA 5.0)
165	!
166	! 1115 2013-03-26 18:16:16Z hoffmann
167	! unused variables removed
168	!
169	! 1113 2013-03-10 02:48:14Z raasch
170	! openACC directive modified
171	!
172	! 1111 2013-03-08 23:54:10Z raasch
173	! openACC directives added for pres
174	! array diss allocated only if required
175	!
176	! 1092 2013-02-02 11:24:22Z raasch
177	! unused variables removed
178	!
179	! 1065 2012-11-22 17:42:36Z hoffmann
180	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
181	!
182	! 1053 2012-11-13 17:11:03Z hoffmann
183	! allocation and initialisation of necessary data arrays for the two-moment
184	! cloud physics scheme the two new prognostic equations (nr, qr):
185	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
186	! +tend_*, prr
187	!
188	! 1036 2012-10-22 13:43:42Z raasch
189	! code put under GPL (PALM 3.9)
190	!
191	! 1032 2012-10-21 13:03:21Z letzel
192	! save memory by not allocating pt_2 in case of neutral = .T.
193	!
194	! 1025 2012-10-07 16:04:41Z letzel
195	! bugfix: swap indices of mask for ghost boundaries
196	!
197	! 1015 2012-09-27 09:23:24Z raasch
198	! mask is set to zero for ghost boundaries
199	!
200	! 1010 2012-09-20 07:59:54Z raasch
201	! cpp switch __nopointer added for pointer free version
202	!
203	! 1003 2012-09-14 14:35:53Z raasch
204	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
205	!
206	! 1001 2012-09-13 14:08:46Z raasch
207	! all actions concerning leapfrog scheme removed
208	!
209	! 996 2012-09-07 10:41:47Z raasch
210	! little reformatting
211	!
212	! 978 2012-08-09 08:28:32Z fricke
213	! outflow damping layer removed
214	! roughness length for scalar quantites z0h added
215	! damping zone for the potential temperatur in case of non-cyclic lateral
216	! boundaries added
217	! initialization of ptdf_x, ptdf_y
218	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
219	!
220	! 849 2012-03-15 10:35:09Z raasch
221	! init_particles renamed lpm_init
222	!
223	! 825 2012-02-19 03:03:44Z raasch
224	! wang_collision_kernel renamed wang_kernel
225	!
226	! Revision 1.1 1998/03/09 16:22:22 raasch
227	! Initial revision
228	!
229	!
230	! Description:
231	! ------------
232	!> Allocation of arrays and initialization of the 3D model via
233	!> a) pre-run the 1D model
234	!> or
235	!> b) pre-set constant linear profiles
236	!> or
237	!> c) read values of a previous run
238	!------------------------------------------------------------------------------!
239	SUBROUTINE init_3d_model
240
241
242	USE advec_ws
243
244	USE arrays_3d
245
246	USE cloud_parameters, &
247	ONLY: nc_const, precipitation_amount, precipitation_rate, prr
248
249	USE constants, &
250	ONLY: pi
251
252	USE control_parameters
253
254	USE grid_variables, &
255	ONLY: dx, dy
256
257	USE indices
258
259	USE lpm_init_mod, &
260	ONLY: lpm_init
261
262	USE kinds
263
264	USE land_surface_model_mod, &
265	ONLY: init_lsm, init_lsm_arrays, land_surface
266
267	USE ls_forcing_mod
268
269	USE model_1d, &
270	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
271
272	USE netcdf_interface, &
273	ONLY: dots_max, dots_num
274
275	USE particle_attributes, &
276	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
277
278	USE pegrid
279
280	USE plant_canopy_model_mod, &
281	ONLY: init_plant_canopy, plant_canopy
282
283	USE radiation_model_mod, &
284	ONLY: init_radiation, radiation
285
286	USE random_function_mod
287
288	USE random_generator_parallel, &
289	ONLY: random_number_parallel, random_seed_parallel, random_dummy, &
290	id_random_array, seq_random_array
291
292	USE statistics, &
293	ONLY: hom, hom_sum, mean_surface_level_height, pr_palm, rmask, &
294	spectrum_x, spectrum_y, statistic_regions, sums, sums_divnew_l, &
295	sums_divold_l, sums_l, sums_l_l, sums_up_fraction_l, &
296	sums_wsts_bc_l, ts_value, var_d, weight_pres, weight_substep
297
298	USE surface_layer_fluxes_mod, &
299	ONLY: init_surface_layer_fluxes
300
301	USE transpose_indices
302
303	IMPLICIT NONE
304
305	INTEGER(iwp) :: i !<
306	INTEGER(iwp) :: ind_array(1) !<
307	INTEGER(iwp) :: j !<
308	INTEGER(iwp) :: k !<
309	INTEGER(iwp) :: sr !<
310
311	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !<
312
313	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !<
314	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !<
315
316	REAL(wp), DIMENSION(1:3) :: volume_flow_area_l !<
317	REAL(wp), DIMENSION(1:3) :: volume_flow_initial_l !<
318
319	REAL(wp), DIMENSION(:), ALLOCATABLE :: mean_surface_level_height_l !<
320	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !<
321	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !<
322
323
324	CALL location_message( 'allocating arrays', .FALSE. )
325	!
326	!-- Allocate arrays
327	ALLOCATE( mean_surface_level_height(0:statistic_regions), &
328	mean_surface_level_height_l(0:statistic_regions), &
329	ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
330	ngp_3d(0:statistic_regions), &
331	ngp_3d_inner(0:statistic_regions), &
332	ngp_3d_inner_l(0:statistic_regions), &
333	ngp_3d_inner_tmp(0:statistic_regions), &
334	sums_divnew_l(0:statistic_regions), &
335	sums_divold_l(0:statistic_regions) )
336	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
337	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
338	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
339	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
340	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
341	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
342	sums(nzb:nzt+1,pr_palm+max_pr_user), &
343	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
344	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
345	sums_up_fraction_l(10,3,0:statistic_regions), &
346	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
347	ts_value(dots_max,0:statistic_regions) )
348	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
349
350	ALLOCATE( ol(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
351	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
352	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
353	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
354	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
355	z0h(nysg:nyng,nxlg:nxrg), z0q(nysg:nyng,nxlg:nxrg) )
356
357	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
358	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
359	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
360	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
361	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
362
363	#if defined( __nopointer )
364	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
365	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
366	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
367	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
368	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
369	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
370	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
371	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
372	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
373	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
374	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
375	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
376	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
377	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
378	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
379	#else
380	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
381	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
382	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
383	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
384	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
385	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
386	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
387	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
388	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
389	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
390	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
391	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
392	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
393	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
394	IF ( .NOT. neutral ) THEN
395	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
396	ENDIF
397	#endif
398
399	!
400	!-- Following array is required for perturbation pressure within the iterative
401	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
402	!-- the weighted average of the substeps and cannot be used in the Poisson
403	!-- solver.
404	IF ( psolver == 'sor' ) THEN
405	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
406	ELSEIF ( psolver(1:9) == 'multigrid' ) THEN
407	!
408	!-- For performance reasons, multigrid is using one ghost layer only
409	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
410	ENDIF
411
412	!
413	!-- Array for storing constant coeffficients of the tridiagonal solver
414	IF ( psolver == 'poisfft' ) THEN
415	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
416	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
417	ENDIF
418
419	IF ( humidity .OR. passive_scalar ) THEN
420	!
421	!-- 2D-humidity/scalar arrays
422	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
423	qsws(nysg:nyng,nxlg:nxrg), &
424	qswst(nysg:nyng,nxlg:nxrg) )
425
426	!
427	!-- 3D-humidity/scalar arrays
428	#if defined( __nopointer )
429	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
430	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
431	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
432	#else
433	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
434	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
435	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
436	#endif
437
438	!
439	!-- 3D-arrays needed for humidity only
440	IF ( humidity ) THEN
441	#if defined( __nopointer )
442	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
443	#else
444	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
445	#endif
446
447	IF ( cloud_physics ) THEN
448
449	!
450	!-- Liquid water content
451	#if defined( __nopointer )
452	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
453	#else
454	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
455	#endif
456	!
457	!-- Precipitation amount and rate (only needed if output is switched)
458	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
459	precipitation_rate(nysg:nyng,nxlg:nxrg) )
460
461	IF ( icloud_scheme == 0 ) THEN
462	!
463	!-- 1D-arrays
464	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
465	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
466	!
467	!-- 3D-cloud water content
468	#if defined( __nopointer )
469	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
470	#else
471	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
472	#endif
473
474	IF ( precipitation ) THEN
475	!
476	!-- 1D-arrays
477	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
478
479	!
480	!-- 2D-rain water content and rain drop concentration arrays
481	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
482	qrsws(nysg:nyng,nxlg:nxrg), &
483	qrswst(nysg:nyng,nxlg:nxrg), &
484	nrs(nysg:nyng,nxlg:nxrg), &
485	nrsws(nysg:nyng,nxlg:nxrg), &
486	nrswst(nysg:nyng,nxlg:nxrg) )
487	!
488	!-- 3D-rain water content, rain drop concentration arrays
489	#if defined( __nopointer )
490	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
491	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
492	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
493	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
494	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
495	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
496	#else
497	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
498	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
499	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
500	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
501	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
502	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
503	#endif
504	!
505	!-- 3d-precipitation rate
506	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
507	ENDIF
508
509	ENDIF
510	ENDIF
511
512	IF ( cloud_droplets ) THEN
513	!
514	!-- Liquid water content, change in liquid water content
515	#if defined( __nopointer )
516	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
517	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
518	#else
519	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
520	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
521	#endif
522	!
523	!-- Real volume of particles (with weighting), volume of particles
524	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
525	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
526	ENDIF
527
528	ENDIF
529
530	ENDIF
531
532	IF ( ocean ) THEN
533	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
534	saswst(nysg:nyng,nxlg:nxrg) )
535	#if defined( __nopointer )
536	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
537	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
538	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
539	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
540	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
541	#else
542	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
543	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
544	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
545	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
546	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
547	prho => prho_1
548	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
549	! density to be apointer
550	#endif
551	IF ( humidity_remote ) THEN
552	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
553	qswst_remote = 0.0_wp
554	ENDIF
555	ENDIF
556
557	!
558	!-- 3D-array for storing the dissipation, needed for calculating the sgs
559	!-- particle velocities
560	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence .OR. &
561	num_acc_per_node > 0 ) THEN
562	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
563	ENDIF
564
565	IF ( dt_dosp /= 9999999.9_wp ) THEN
566	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
567	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
568	spectrum_x = 0.0_wp
569	spectrum_y = 0.0_wp
570
571	ALLOCATE( var_d(nzb:nzt+1) )
572	var_d = 0.0_wp
573	ENDIF
574
575	!
576	!-- 1D-array for large scale subsidence velocity
577	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
578	ALLOCATE ( w_subs(nzb:nzt+1) )
579	w_subs = 0.0_wp
580	ENDIF
581
582	!
583	!-- ID-array and state-space-array for the parallel random number generator
584	IF ( random_generator == 'random-parallel' ) THEN
585	ALLOCATE ( seq_random_array(5,nysg:nyng,nxlg:nxrg) )
586	ALLOCATE ( id_random_array(0:ny,0:nx) )
587	seq_random_array = 0
588	id_random_array = 0
589	ENDIF
590
591	!
592	!-- 4D-array for storing the Rif-values at vertical walls
593	IF ( topography /= 'flat' ) THEN
594	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
595	rif_wall = 0.0_wp
596	ENDIF
597
598	!
599	!-- Arrays to store velocity data from t-dt and the phase speeds which
600	!-- are needed for radiation boundary conditions
601	IF ( outflow_l ) THEN
602	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
603	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
604	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
605	ENDIF
606	IF ( outflow_r ) THEN
607	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
608	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
609	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
610	ENDIF
611	IF ( outflow_l .OR. outflow_r ) THEN
612	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
613	c_w(nzb:nzt+1,nysg:nyng) )
614	ENDIF
615	IF ( outflow_s ) THEN
616	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
617	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
618	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
619	ENDIF
620	IF ( outflow_n ) THEN
621	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
622	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
623	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
624	ENDIF
625	IF ( outflow_s .OR. outflow_n ) THEN
626	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
627	c_w(nzb:nzt+1,nxlg:nxrg) )
628	ENDIF
629	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
630	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
631	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
632	ENDIF
633
634
635	#if ! defined( __nopointer )
636	!
637	!-- Initial assignment of the pointers
638	e => e_1; e_p => e_2; te_m => e_3
639	IF ( .NOT. neutral ) THEN
640	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
641	ELSE
642	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
643	ENDIF
644	u => u_1; u_p => u_2; tu_m => u_3
645	v => v_1; v_p => v_2; tv_m => v_3
646	w => w_1; w_p => w_2; tw_m => w_3
647
648	IF ( humidity .OR. passive_scalar ) THEN
649	q => q_1; q_p => q_2; tq_m => q_3
650	IF ( humidity ) THEN
651	vpt => vpt_1
652	IF ( cloud_physics ) THEN
653	ql => ql_1
654	IF ( icloud_scheme == 0 ) THEN
655	qc => qc_1
656	IF ( precipitation ) THEN
657	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
658	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
659	ENDIF
660	ENDIF
661	ENDIF
662	ENDIF
663	IF ( cloud_droplets ) THEN
664	ql => ql_1
665	ql_c => ql_2
666	ENDIF
667	ENDIF
668
669	IF ( ocean ) THEN
670	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
671	ENDIF
672	#endif
673
674	!
675	!-- Allocate land surface model arrays
676	IF ( land_surface ) THEN
677	CALL init_lsm_arrays
678	ENDIF
679
680	!
681	!-- Allocate arrays containing the RK coefficient for calculation of
682	!-- perturbation pressure and turbulent fluxes. At this point values are
683	!-- set for pressure calculation during initialization (where no timestep
684	!-- is done). Further below the values needed within the timestep scheme
685	!-- will be set.
686	!-- TO_DO: zeroth element added to weight_pres because in case of nesting
687	!-- pres may need to be called outside the RK-substeps. Antti will
688	!-- check if this is really required.
689	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
690	weight_pres(0:intermediate_timestep_count_max) )
691	weight_substep = 1.0_wp
692	weight_pres = 1.0_wp
693	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
694
695	CALL location_message( 'finished', .TRUE. )
696	!
697	!-- Initialize model variables
698	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
699	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
700	!
701	!-- First model run of a possible job queue.
702	!-- Initial profiles of the variables must be computes.
703	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
704
705	CALL location_message( 'initializing with 1D model profiles', .FALSE. )
706	!
707	!-- Use solutions of the 1D model as initial profiles,
708	!-- start 1D model
709	CALL init_1d_model
710	!
711	!-- Transfer initial profiles to the arrays of the 3D model
712	DO i = nxlg, nxrg
713	DO j = nysg, nyng
714	e(:,j,i) = e1d
715	kh(:,j,i) = kh1d
716	km(:,j,i) = km1d
717	pt(:,j,i) = pt_init
718	u(:,j,i) = u1d
719	v(:,j,i) = v1d
720	ENDDO
721	ENDDO
722
723	IF ( humidity .OR. passive_scalar ) THEN
724	DO i = nxlg, nxrg
725	DO j = nysg, nyng
726	q(:,j,i) = q_init
727	ENDDO
728	ENDDO
729	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
730	precipitation ) THEN
731	DO i = nxlg, nxrg
732	DO j = nysg, nyng
733	qr(:,j,i) = 0.0_wp
734	nr(:,j,i) = 0.0_wp
735	ENDDO
736	ENDDO
737	!
738	!-- Initialze nc_1d with default value
739	nc_1d(:) = nc_const
740
741	ENDIF
742	ENDIF
743
744	IF ( .NOT. constant_diffusion ) THEN
745	DO i = nxlg, nxrg
746	DO j = nysg, nyng
747	e(:,j,i) = e1d
748	ENDDO
749	ENDDO
750	!
751	!-- Store initial profiles for output purposes etc.
752	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
753
754	IF ( constant_flux_layer ) THEN
755	ol = ( zu(nzb+1) - zw(nzb) ) / ( rif1d(nzb+1) + 1.0E-20_wp )
756	ts = 0.0_wp ! could actually be computed more accurately in the
757	! 1D model. Update when opportunity arises.
758	us = us1d
759	usws = usws1d
760	vsws = vsws1d
761	ELSE
762	ts = 0.0_wp ! must be set, because used in
763	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
764	us = 0.0_wp
765	usws = 0.0_wp
766	vsws = 0.0_wp
767	ENDIF
768
769	ELSE
770	e = 0.0_wp ! must be set, because used in
771	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
772	ts = 0.0_wp
773	us = 0.0_wp
774	usws = 0.0_wp
775	vsws = 0.0_wp
776	ENDIF
777	uswst = top_momentumflux_u
778	vswst = top_momentumflux_v
779
780	!
781	!-- In every case qs = 0.0 (see also pt)
782	!-- This could actually be computed more accurately in the 1D model.
783	!-- Update when opportunity arises!
784	IF ( humidity .OR. passive_scalar ) THEN
785	qs = 0.0_wp
786	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
787	precipitation ) THEN
788	qrs = 0.0_wp
789	nrs = 0.0_wp
790	ENDIF
791	ENDIF
792
793	!
794	!-- Inside buildings set velocities back to zero
795	IF ( topography /= 'flat' ) THEN
796	DO i = nxlg, nxrg
797	DO j = nysg, nyng
798	u(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
799	v(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
800	ENDDO
801	ENDDO
802
803	!
804	!-- WARNING: The extra boundary conditions set after running the
805	!-- ------- 1D model impose an error on the divergence one layer
806	!-- below the topography; need to correct later
807	!-- ATTENTION: Provisional correction for Piacsek & Williams
808	!-- --------- advection scheme: keep u and v zero one layer below
809	!-- the topography.
810	IF ( ibc_uv_b == 1 ) THEN
811	!
812	!-- Neumann condition
813	DO i = nxl-1, nxr+1
814	DO j = nys-1, nyn+1
815	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
816	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
817	ENDDO
818	ENDDO
819
820	ENDIF
821
822	ENDIF
823
824	CALL location_message( 'finished', .TRUE. )
825
826	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
827	THEN
828
829	CALL location_message( 'initializing with constant profiles', .FALSE. )
830	!
831	!-- Overwrite initial profiles in case of nudging
832	IF ( nudging ) THEN
833	pt_init = ptnudge(:,1)
834	u_init = unudge(:,1)
835	v_init = vnudge(:,1)
836	IF ( humidity .OR. passive_scalar ) THEN
837	q_init = qnudge(:,1)
838	ENDIF
839
840	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
841	'scalars from NUDGING_DATA are used.'
842	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
843	ENDIF
844
845	!
846	!-- Use constructed initial profiles (velocity constant with height,
847	!-- temperature profile with constant gradient)
848	DO i = nxlg, nxrg
849	DO j = nysg, nyng
850	pt(:,j,i) = pt_init
851	u(:,j,i) = u_init
852	v(:,j,i) = v_init
853	ENDDO
854	ENDDO
855
856	!
857	!-- Set initial horizontal velocities at the lowest computational grid
858	!-- levels to zero in order to avoid too small time steps caused by the
859	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
860	!-- in the limiting formula!).
861	IF ( ibc_uv_b /= 1 ) THEN
862	DO i = nxlg, nxrg
863	DO j = nysg, nyng
864	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0_wp
865	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0_wp
866	ENDDO
867	ENDDO
868	ENDIF
869
870	IF ( humidity .OR. passive_scalar ) THEN
871	DO i = nxlg, nxrg
872	DO j = nysg, nyng
873	q(:,j,i) = q_init
874	ENDDO
875	ENDDO
876	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
877	!
878	!-- Initialze nc_1d with default value
879	nc_1d(:) = nc_const
880
881	IF ( precipitation ) THEN
882	DO i = nxlg, nxrg
883	DO j = nysg, nyng
884	qr(:,j,i) = 0.0_wp
885	nr(:,j,i) = 0.0_wp
886	ENDDO
887	ENDDO
888	ENDIF
889
890	ENDIF
891	ENDIF
892
893	IF ( ocean ) THEN
894	DO i = nxlg, nxrg
895	DO j = nysg, nyng
896	sa(:,j,i) = sa_init
897	ENDDO
898	ENDDO
899	ENDIF
900
901	IF ( constant_diffusion ) THEN
902	km = km_constant
903	kh = km / prandtl_number
904	e = 0.0_wp
905	ELSEIF ( e_init > 0.0_wp ) THEN
906	DO k = nzb+1, nzt
907	km(k,:,:) = 0.1_wp * l_grid(k) * SQRT( e_init )
908	ENDDO
909	km(nzb,:,:) = km(nzb+1,:,:)
910	km(nzt+1,:,:) = km(nzt,:,:)
911	kh = km / prandtl_number
912	e = e_init
913	ELSE
914	IF ( .NOT. ocean ) THEN
915	kh = 0.01_wp ! there must exist an initial diffusion, because
916	km = 0.01_wp ! otherwise no TKE would be produced by the
917	! production terms, as long as not yet
918	! e = (u/cm)*2 at k=nzb+1
919	ELSE
920	kh = 0.00001_wp
921	km = 0.00001_wp
922	ENDIF
923	e = 0.0_wp
924	ENDIF
925	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min
926	ts = 0.0_wp
927	us = 0.0_wp
928	usws = 0.0_wp
929	uswst = top_momentumflux_u
930	vsws = 0.0_wp
931	vswst = top_momentumflux_v
932	IF ( humidity .OR. passive_scalar ) qs = 0.0_wp
933
934	!
935	!-- Compute initial temperature field and other constants used in case
936	!-- of a sloping surface
937	IF ( sloping_surface ) CALL init_slope
938
939	CALL location_message( 'finished', .TRUE. )
940
941	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
942	THEN
943
944	CALL location_message( 'initializing by user', .FALSE. )
945	!
946	!-- Initialization will completely be done by the user
947	CALL user_init_3d_model
948
949	CALL location_message( 'finished', .TRUE. )
950
951	ENDIF
952
953	CALL location_message( 'initializing statistics, boundary conditions, etc.', &
954	.FALSE. )
955
956	!
957	!-- Bottom boundary
958	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
959	u(nzb,:,:) = 0.0_wp
960	v(nzb,:,:) = 0.0_wp
961	ENDIF
962
963	!
964	!-- Apply channel flow boundary condition
965	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
966	u(nzt+1,:,:) = 0.0_wp
967	v(nzt+1,:,:) = 0.0_wp
968	ENDIF
969
970	!
971	!-- Calculate virtual potential temperature
972	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
973
974	!
975	!-- Store initial profiles for output purposes etc.
976	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
977	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
978	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
979	hom(nzb,1,5,:) = 0.0_wp
980	hom(nzb,1,6,:) = 0.0_wp
981	ENDIF
982	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
983	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
984	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
985
986	IF ( ocean ) THEN
987	!
988	!-- Store initial salinity profile
989	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
990	ENDIF
991
992	IF ( humidity ) THEN
993	!
994	!-- Store initial profile of total water content, virtual potential
995	!-- temperature
996	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
997	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
998	IF ( cloud_physics .OR. cloud_droplets ) THEN
999	!
1000	!-- Store initial profile of specific humidity and potential
1001	!-- temperature
1002	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1003	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1004	ENDIF
1005	ENDIF
1006
1007	IF ( passive_scalar ) THEN
1008	!
1009	!-- Store initial scalar profile
1010	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1011	ENDIF
1012
1013	!
1014	!-- Initialize the random number generators (from numerical recipes)
1015	CALL random_function_ini
1016
1017	IF ( random_generator == 'random-parallel' ) THEN
1018	!-- Asigning an ID to every vertical gridpoint column
1019	!-- dependig on the ensemble run number.
1020	random_dummy=1
1021	DO j=0,ny
1022	DO i=0,nx
1023	id_random_array(j,i) = random_dummy + 1E6 &
1024	* ( ensemble_member_nr - 1000 )
1025	random_dummy = random_dummy + 1
1026	END DO
1027	ENDDO
1028	!-- Initializing with random_seed_parallel for every vertical
1029	!-- gridpoint column.
1030	random_dummy=0
1031	DO j = nysg, nyng
1032	DO i = nxlg, nxrg
1033	CALL random_seed_parallel (random_sequence=id_random_array(j, i))
1034	CALL random_number_parallel (random_dummy)
1035	CALL random_seed_parallel (get=seq_random_array(:, j, i))
1036	END DO
1037	ENDDO
1038	ENDIF
1039
1040	!
1041	!-- Initialize fluxes at bottom surface
1042	IF ( use_surface_fluxes ) THEN
1043
1044	IF ( constant_heatflux ) THEN
1045	!
1046	!-- Heat flux is prescribed
1047	IF ( random_heatflux ) THEN
1048	CALL disturb_heatflux
1049	ELSE
1050	shf = surface_heatflux
1051	!
1052	!-- Initialize shf with data from external file LSF_DATA
1053	IF ( large_scale_forcing .AND. lsf_surf ) THEN
1054	CALL ls_forcing_surf ( simulated_time )
1055	ENDIF
1056
1057	!
1058	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
1059	IF ( TRIM( topography ) /= 'flat' ) THEN
1060	DO i = nxlg, nxrg
1061	DO j = nysg, nyng
1062	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1063	shf(j,i) = wall_heatflux(0)
1064	ENDIF
1065	ENDDO
1066	ENDDO
1067	ENDIF
1068	ENDIF
1069	ENDIF
1070
1071	!
1072	!-- Determine the near-surface water flux
1073	IF ( humidity .OR. passive_scalar ) THEN
1074	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1075	precipitation ) THEN
1076	qrsws = 0.0_wp
1077	nrsws = 0.0_wp
1078	ENDIF
1079	IF ( constant_waterflux ) THEN
1080	qsws = surface_waterflux
1081	!
1082	!-- Over topography surface_waterflux is replaced by
1083	!-- wall_humidityflux(0)
1084	IF ( TRIM( topography ) /= 'flat' ) THEN
1085	wall_qflux = wall_humidityflux
1086	DO i = nxlg, nxrg
1087	DO j = nysg, nyng
1088	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1089	qsws(j,i) = wall_qflux(0)
1090	ENDIF
1091	ENDDO
1092	ENDDO
1093	ENDIF
1094	ENDIF
1095	ENDIF
1096
1097	ENDIF
1098
1099	!
1100	!-- Initialize fluxes at top surface
1101	!-- Currently, only the heatflux and salinity flux can be prescribed.
1102	!-- The latent flux is zero in this case!
1103	IF ( use_top_fluxes ) THEN
1104
1105	IF ( constant_top_heatflux ) THEN
1106	!
1107	!-- Heat flux is prescribed
1108	tswst = top_heatflux
1109
1110	IF ( humidity .OR. passive_scalar ) THEN
1111	qswst = 0.0_wp
1112	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1113	precipitation ) THEN
1114	nrswst = 0.0_wp
1115	qrswst = 0.0_wp
1116	ENDIF
1117	ENDIF
1118
1119	IF ( ocean ) THEN
1120	saswsb = bottom_salinityflux
1121	saswst = top_salinityflux
1122	ENDIF
1123	ENDIF
1124
1125	!
1126	!-- Initialization in case of a coupled model run
1127	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1128	tswst = 0.0_wp
1129	ENDIF
1130
1131	ENDIF
1132
1133	!
1134	!-- Initialize Prandtl layer quantities
1135	IF ( constant_flux_layer ) THEN
1136
1137	z0 = roughness_length
1138	z0h = z0h_factor * z0
1139	z0q = z0h_factor * z0
1140
1141	IF ( .NOT. constant_heatflux ) THEN
1142	!
1143	!-- Surface temperature is prescribed. Here the heat flux cannot be
1144	!-- simply estimated, because therefore ol, u* and theta* would have
1145	!-- to be computed by iteration. This is why the heat flux is assumed
1146	!-- to be zero before the first time step. It approaches its correct
1147	!-- value in the course of the first few time steps.
1148	shf = 0.0_wp
1149	ENDIF
1150
1151	IF ( humidity .OR. passive_scalar ) THEN
1152	IF ( .NOT. constant_waterflux ) qsws = 0.0_wp
1153	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1154	precipitation ) THEN
1155	qrsws = 0.0_wp
1156	nrsws = 0.0_wp
1157	ENDIF
1158	ENDIF
1159
1160	ENDIF
1161
1162	!
1163	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1164	!-- the reference state will be set (overwritten) in init_ocean)
1165	IF ( use_single_reference_value ) THEN
1166	IF ( .NOT. humidity ) THEN
1167	ref_state(:) = pt_reference
1168	ELSE
1169	ref_state(:) = vpt_reference
1170	ENDIF
1171	ELSE
1172	IF ( .NOT. humidity ) THEN
1173	ref_state(:) = pt_init(:)
1174	ELSE
1175	ref_state(:) = vpt(:,nys,nxl)
1176	ENDIF
1177	ENDIF
1178
1179	!
1180	!-- For the moment, vertical velocity is zero
1181	w = 0.0_wp
1182
1183	!
1184	!-- Initialize array sums (must be defined in first call of pres)
1185	sums = 0.0_wp
1186
1187	!
1188	!-- In case of iterative solvers, p must get an initial value
1189	IF ( psolver(1:9) == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
1190
1191	!
1192	!-- Treating cloud physics, liquid water content and precipitation amount
1193	!-- are zero at beginning of the simulation
1194	IF ( cloud_physics ) THEN
1195	ql = 0.0_wp
1196	IF ( precipitation ) precipitation_amount = 0.0_wp
1197	IF ( icloud_scheme == 0 ) THEN
1198	qc = 0.0_wp
1199	nc_1d = nc_const
1200	ENDIF
1201	ENDIF
1202	!
1203	!-- Impose vortex with vertical axis on the initial velocity profile
1204	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1205	CALL init_rankine
1206	ENDIF
1207
1208	!
1209	!-- Impose temperature anomaly (advection test only)
1210	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1211	CALL init_pt_anomaly
1212	ENDIF
1213
1214	!
1215	!-- If required, change the surface temperature at the start of the 3D run
1216	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
1217	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1218	ENDIF
1219
1220	!
1221	!-- If required, change the surface humidity/scalar at the start of the 3D
1222	!-- run
1223	IF ( ( humidity .OR. passive_scalar ) .AND. &
1224	q_surface_initial_change /= 0.0_wp ) THEN
1225	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1226	ENDIF
1227
1228	!
1229	!-- Initialize old and new time levels.
1230	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
1231	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1232
1233	IF ( humidity .OR. passive_scalar ) THEN
1234	tq_m = 0.0_wp
1235	q_p = q
1236	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1237	precipitation ) THEN
1238	tqr_m = 0.0_wp
1239	qr_p = qr
1240	tnr_m = 0.0_wp
1241	nr_p = nr
1242	ENDIF
1243	ENDIF
1244
1245	IF ( ocean ) THEN
1246	tsa_m = 0.0_wp
1247	sa_p = sa
1248	ENDIF
1249
1250	CALL location_message( 'finished', .TRUE. )
1251
1252	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1253	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1254	THEN
1255
1256	CALL location_message( 'initializing in case of restart / cyclic_fill', &
1257	.FALSE. )
1258	!
1259	!-- When reading data for cyclic fill of 3D prerun data files, read
1260	!-- some of the global variables from the restart file which are required
1261	!-- for initializing the inflow
1262	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1263
1264	DO i = 0, io_blocks-1
1265	IF ( i == io_group ) THEN
1266	CALL read_parts_of_var_list
1267	CALL close_file( 13 )
1268	ENDIF
1269	#if defined( __parallel )
1270	CALL MPI_BARRIER( comm2d, ierr )
1271	#endif
1272	ENDDO
1273
1274	ENDIF
1275
1276	!
1277	!-- Read binary data from restart file
1278	DO i = 0, io_blocks-1
1279	IF ( i == io_group ) THEN
1280	CALL read_3d_binary
1281	ENDIF
1282	#if defined( __parallel )
1283	CALL MPI_BARRIER( comm2d, ierr )
1284	#endif
1285	ENDDO
1286
1287	!
1288	!-- Initialization of the turbulence recycling method
1289	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1290	turbulent_inflow ) THEN
1291	!
1292	!-- First store the profiles to be used at the inflow.
1293	!-- These profiles are the (temporally) and horizontally averaged vertical
1294	!-- profiles from the prerun. Alternatively, prescribed profiles
1295	!-- for u,v-components can be used.
1296	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,6) )
1297
1298	IF ( use_prescribed_profile_data ) THEN
1299	mean_inflow_profiles(:,1) = u_init ! u
1300	mean_inflow_profiles(:,2) = v_init ! v
1301	ELSE
1302	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1303	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1304	ENDIF
1305	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1306	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1307	mean_inflow_profiles(:,6) = hom_sum(:,41,0) ! q
1308
1309	!
1310	!-- If necessary, adjust the horizontal flow field to the prescribed
1311	!-- profiles
1312	IF ( use_prescribed_profile_data ) THEN
1313	DO i = nxlg, nxrg
1314	DO j = nysg, nyng
1315	DO k = nzb, nzt+1
1316	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1317	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1318	ENDDO
1319	ENDDO
1320	ENDDO
1321	ENDIF
1322
1323	!
1324	!-- Use these mean profiles at the inflow (provided that Dirichlet
1325	!-- conditions are used)
1326	IF ( inflow_l ) THEN
1327	DO j = nysg, nyng
1328	DO k = nzb, nzt+1
1329	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1330	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1331	w(k,j,nxlg:-1) = 0.0_wp
1332	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1333	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1334	IF ( humidity .OR. passive_scalar ) &
1335	q(k,j,nxlg:-1) = mean_inflow_profiles(k,6)
1336	ENDDO
1337	ENDDO
1338	ENDIF
1339
1340	!
1341	!-- Calculate the damping factors to be used at the inflow. For a
1342	!-- turbulent inflow the turbulent fluctuations have to be limited
1343	!-- vertically because otherwise the turbulent inflow layer will grow
1344	!-- in time.
1345	IF ( inflow_damping_height == 9999999.9_wp ) THEN
1346	!
1347	!-- Default: use the inversion height calculated by the prerun; if
1348	!-- this is zero, inflow_damping_height must be explicitly
1349	!-- specified.
1350	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
1351	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1352	ELSE
1353	WRITE( message_string, * ) 'inflow_damping_height must be ', &
1354	'explicitly specified because&the inversion height ', &
1355	'calculated by the prerun is zero.'
1356	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1357	ENDIF
1358
1359	ENDIF
1360
1361	IF ( inflow_damping_width == 9999999.9_wp ) THEN
1362	!
1363	!-- Default for the transition range: one tenth of the undamped
1364	!-- layer
1365	inflow_damping_width = 0.1_wp * inflow_damping_height
1366
1367	ENDIF
1368
1369	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1370
1371	DO k = nzb, nzt+1
1372
1373	IF ( zu(k) <= inflow_damping_height ) THEN
1374	inflow_damping_factor(k) = 1.0_wp
1375	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1376	inflow_damping_factor(k) = 1.0_wp - &
1377	( zu(k) - inflow_damping_height ) / &
1378	inflow_damping_width
1379	ELSE
1380	inflow_damping_factor(k) = 0.0_wp
1381	ENDIF
1382
1383	ENDDO
1384
1385	ENDIF
1386
1387	!
1388	!-- Inside buildings set velocities and TKE back to zero
1389	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1390	topography /= 'flat' ) THEN
1391	!
1392	!-- Inside buildings set velocities and TKE back to zero.
1393	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1394	!-- maybe revise later.
1395	DO i = nxlg, nxrg
1396	DO j = nysg, nyng
1397	u (nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1398	v (nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1399	w (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1400	e (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1401	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1402	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1403	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1404	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1405	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1406	ENDDO
1407	ENDDO
1408
1409	ENDIF
1410
1411	!
1412	!-- Calculate initial temperature field and other constants used in case
1413	!-- of a sloping surface
1414	IF ( sloping_surface ) CALL init_slope
1415
1416	!
1417	!-- Initialize new time levels (only done in order to set boundary values
1418	!-- including ghost points)
1419	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1420	IF ( humidity .OR. passive_scalar ) THEN
1421	q_p = q
1422	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1423	precipitation ) THEN
1424	qr_p = qr
1425	nr_p = nr
1426	ENDIF
1427	ENDIF
1428	IF ( ocean ) sa_p = sa
1429
1430	!
1431	!-- Allthough tendency arrays are set in prognostic_equations, they have
1432	!-- have to be predefined here because they are used (but multiplied with 0)
1433	!-- there before they are set.
1434	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
1435	IF ( humidity .OR. passive_scalar ) THEN
1436	tq_m = 0.0_wp
1437	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1438	precipitation ) THEN
1439	tqr_m = 0.0_wp
1440	tnr_m = 0.0_wp
1441	ENDIF
1442	ENDIF
1443	IF ( ocean ) tsa_m = 0.0_wp
1444
1445	CALL location_message( 'finished', .TRUE. )
1446
1447	ELSE
1448	!
1449	!-- Actually this part of the programm should not be reached
1450	message_string = 'unknown initializing problem'
1451	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1452	ENDIF
1453
1454
1455	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1456	!
1457	!-- Initialize old timelevels needed for radiation boundary conditions
1458	IF ( outflow_l ) THEN
1459	u_m_l(:,:,:) = u(:,:,1:2)
1460	v_m_l(:,:,:) = v(:,:,0:1)
1461	w_m_l(:,:,:) = w(:,:,0:1)
1462	ENDIF
1463	IF ( outflow_r ) THEN
1464	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1465	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1466	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1467	ENDIF
1468	IF ( outflow_s ) THEN
1469	u_m_s(:,:,:) = u(:,0:1,:)
1470	v_m_s(:,:,:) = v(:,1:2,:)
1471	w_m_s(:,:,:) = w(:,0:1,:)
1472	ENDIF
1473	IF ( outflow_n ) THEN
1474	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1475	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1476	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1477	ENDIF
1478
1479	ENDIF
1480
1481	!
1482	!-- Calculate the initial volume flow at the right and north boundary
1483	IF ( conserve_volume_flow ) THEN
1484
1485	IF ( use_prescribed_profile_data ) THEN
1486
1487	volume_flow_initial_l = 0.0_wp
1488	volume_flow_area_l = 0.0_wp
1489
1490	IF ( nxr == nx ) THEN
1491	DO j = nys, nyn
1492	DO k = nzb_2d(j,nx)+1, nzt
1493	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1494	u_init(k) * dzw(k)
1495	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1496	ENDDO
1497	ENDDO
1498	ENDIF
1499
1500	IF ( nyn == ny ) THEN
1501	DO i = nxl, nxr
1502	DO k = nzb_2d(ny,i)+1, nzt
1503	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1504	v_init(k) * dzw(k)
1505	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1506	ENDDO
1507	ENDDO
1508	ENDIF
1509
1510	#if defined( __parallel )
1511	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1512	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1513	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1514	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1515
1516	#else
1517	volume_flow_initial = volume_flow_initial_l
1518	volume_flow_area = volume_flow_area_l
1519	#endif
1520
1521	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1522
1523	volume_flow_initial_l = 0.0_wp
1524	volume_flow_area_l = 0.0_wp
1525
1526	IF ( nxr == nx ) THEN
1527	DO j = nys, nyn
1528	DO k = nzb_2d(j,nx)+1, nzt
1529	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1530	hom_sum(k,1,0) * dzw(k)
1531	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1532	ENDDO
1533	ENDDO
1534	ENDIF
1535
1536	IF ( nyn == ny ) THEN
1537	DO i = nxl, nxr
1538	DO k = nzb_2d(ny,i)+1, nzt
1539	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1540	hom_sum(k,2,0) * dzw(k)
1541	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1542	ENDDO
1543	ENDDO
1544	ENDIF
1545
1546	#if defined( __parallel )
1547	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1548	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1549	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1550	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1551
1552	#else
1553	volume_flow_initial = volume_flow_initial_l
1554	volume_flow_area = volume_flow_area_l
1555	#endif
1556
1557	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1558
1559	volume_flow_initial_l = 0.0_wp
1560	volume_flow_area_l = 0.0_wp
1561
1562	IF ( nxr == nx ) THEN
1563	DO j = nys, nyn
1564	DO k = nzb_2d(j,nx)+1, nzt
1565	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1566	u(k,j,nx) * dzw(k)
1567	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1568	ENDDO
1569	ENDDO
1570	ENDIF
1571
1572	IF ( nyn == ny ) THEN
1573	DO i = nxl, nxr
1574	DO k = nzb_2d(ny,i)+1, nzt
1575	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1576	v(k,ny,i) * dzw(k)
1577	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1578	ENDDO
1579	ENDDO
1580	ENDIF
1581
1582	#if defined( __parallel )
1583	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1584	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1585	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1586	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1587
1588	#else
1589	volume_flow_initial = volume_flow_initial_l
1590	volume_flow_area = volume_flow_area_l
1591	#endif
1592
1593	ENDIF
1594
1595	!
1596	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1597	!-- from u\|v_bulk instead
1598	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1599	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1600	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1601	ENDIF
1602
1603	ENDIF
1604
1605	!
1606	!-- Initialize quantities for special advections schemes
1607	CALL init_advec
1608
1609	!
1610	!-- Impose random perturbation on the horizontal velocity field and then
1611	!-- remove the divergences from the velocity field at the initial stage
1612	IF ( create_disturbances .AND. disturbance_energy_limit /= 0.0_wp .AND. &
1613	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1614	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1615
1616	CALL location_message( 'creating initial disturbances', .FALSE. )
1617	CALL disturb_field( nzb_u_inner, tend, u )
1618	CALL disturb_field( nzb_v_inner, tend, v )
1619	CALL location_message( 'finished', .TRUE. )
1620
1621	CALL location_message( 'calling pressure solver', .FALSE. )
1622	n_sor = nsor_ini
1623	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1624	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1625	!$acc copyin( weight_pres, weight_substep ) &
1626	!$acc copy( tri, tric, u, v, w )
1627	CALL pres
1628	!$acc end data
1629	n_sor = nsor
1630	CALL location_message( 'finished', .TRUE. )
1631
1632	ENDIF
1633
1634	!
1635	!-- If required, initialize quantities needed for the plant canopy model
1636	IF ( plant_canopy ) CALL init_plant_canopy
1637
1638	!
1639	!-- If required, initialize dvrp-software
1640	IF ( dt_dvrp /= 9999999.9_wp ) CALL init_dvrp
1641
1642	IF ( ocean ) THEN
1643	!
1644	!-- Initialize quantities needed for the ocean model
1645	CALL init_ocean
1646
1647	ELSE
1648	!
1649	!-- Initialize quantities for handling cloud physics
1650	!-- This routine must be called before lpm_init, because
1651	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1652	!-- lpm_init) is not defined.
1653	CALL init_cloud_physics
1654	ENDIF
1655
1656	!
1657	!-- If required, initialize particles
1658	IF ( particle_advection ) CALL lpm_init
1659
1660	!
1661	!-- If required, initialize quantities needed for the LSM
1662	IF ( land_surface ) THEN
1663	CALL location_message( 'initializing land surface model', .FALSE. )
1664	CALL init_lsm
1665	CALL location_message( 'finished', .TRUE. )
1666	ENDIF
1667
1668	!
1669	!-- Initialize surface layer (done after LSM as roughness length are required
1670	!-- for initialization
1671	IF ( constant_flux_layer ) THEN
1672	CALL location_message( 'initializing surface layer', .FALSE. )
1673	CALL init_surface_layer_fluxes
1674	CALL location_message( 'finished', .TRUE. )
1675	ENDIF
1676
1677	!
1678	!-- If required, initialize radiation model
1679	IF ( radiation ) THEN
1680	CALL location_message( 'initializing radiation model', .FALSE. )
1681	CALL init_radiation
1682	CALL location_message( 'finished', .TRUE. )
1683	ENDIF
1684
1685	!
1686	!-- Initialize the ws-scheme.
1687	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1688
1689	!
1690	!-- Setting weighting factors for calculation of perturbation pressure
1691	!-- and turbulent quantities from the RK substeps
1692	!-- TO_DO: zeroth element is added to weight_pres because in nesting pres
1693	!-- may need to be called outside the RK-substeps
1694	weight_pres(0) = 1.0_wp
1695	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1696
1697	weight_substep(1) = 1._wp/6._wp
1698	weight_substep(2) = 3._wp/10._wp
1699	weight_substep(3) = 8._wp/15._wp
1700
1701	weight_pres(1) = 1._wp/3._wp
1702	weight_pres(2) = 5._wp/12._wp
1703	weight_pres(3) = 1._wp/4._wp
1704
1705	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1706
1707	weight_substep(1) = 1._wp/2._wp
1708	weight_substep(2) = 1._wp/2._wp
1709
1710	weight_pres(1) = 1._wp/2._wp
1711	weight_pres(2) = 1._wp/2._wp
1712
1713	ELSE ! for Euler-method
1714
1715	weight_substep(1) = 1.0_wp
1716	weight_pres(1) = 1.0_wp
1717
1718	ENDIF
1719
1720	!
1721	!-- Initialize Rayleigh damping factors
1722	rdf = 0.0_wp
1723	rdf_sc = 0.0_wp
1724	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
1725	IF ( .NOT. ocean ) THEN
1726	DO k = nzb+1, nzt
1727	IF ( zu(k) >= rayleigh_damping_height ) THEN
1728	rdf(k) = rayleigh_damping_factor * &
1729	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
1730	/ ( zu(nzt) - rayleigh_damping_height ) ) &
1731	)**2
1732	ENDIF
1733	ENDDO
1734	ELSE
1735	DO k = nzt, nzb+1, -1
1736	IF ( zu(k) <= rayleigh_damping_height ) THEN
1737	rdf(k) = rayleigh_damping_factor * &
1738	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
1739	/ ( rayleigh_damping_height - zu(nzb+1) ) ) &
1740	)**2
1741	ENDIF
1742	ENDDO
1743	ENDIF
1744	ENDIF
1745	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1746
1747	!
1748	!-- Initialize the starting level and the vertical smoothing factor used for
1749	!-- the external pressure gradient
1750	dp_smooth_factor = 1.0_wp
1751	IF ( dp_external ) THEN
1752	!
1753	!-- Set the starting level dp_level_ind_b only if it has not been set before
1754	!-- (e.g. in init_grid).
1755	IF ( dp_level_ind_b == 0 ) THEN
1756	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1757	dp_level_ind_b = ind_array(1) - 1 + nzb
1758	! MINLOC uses lower array bound 1
1759	ENDIF
1760	IF ( dp_smooth ) THEN
1761	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
1762	DO k = dp_level_ind_b+1, nzt
1763	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
1764	( REAL( k - dp_level_ind_b, KIND=wp ) / &
1765	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
1766	ENDDO
1767	ENDIF
1768	ENDIF
1769
1770	!
1771	!-- Initialize damping zone for the potential temperature in case of
1772	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1773	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1774	ptdf_x = 0.0_wp
1775	ptdf_y = 0.0_wp
1776	IF ( bc_lr_dirrad ) THEN
1777	DO i = nxl, nxr
1778	IF ( ( i * dx ) < pt_damping_width ) THEN
1779	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
1780	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
1781	REAL( pt_damping_width, KIND=wp ) ) ) )**2
1782	ENDIF
1783	ENDDO
1784	ELSEIF ( bc_lr_raddir ) THEN
1785	DO i = nxl, nxr
1786	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1787	ptdf_x(i) = pt_damping_factor * &
1788	SIN( pi * 0.5_wp * &
1789	( ( i - nx ) * dx + pt_damping_width ) / &
1790	REAL( pt_damping_width, KIND=wp ) )**2
1791	ENDIF
1792	ENDDO
1793	ELSEIF ( bc_ns_dirrad ) THEN
1794	DO j = nys, nyn
1795	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1796	ptdf_y(j) = pt_damping_factor * &
1797	SIN( pi * 0.5_wp * &
1798	( ( j - ny ) * dy + pt_damping_width ) / &
1799	REAL( pt_damping_width, KIND=wp ) )**2
1800	ENDIF
1801	ENDDO
1802	ELSEIF ( bc_ns_raddir ) THEN
1803	DO j = nys, nyn
1804	IF ( ( j * dy ) < pt_damping_width ) THEN
1805	ptdf_y(j) = pt_damping_factor * &
1806	SIN( pi * 0.5_wp * &
1807	( pt_damping_width - j * dy ) / &
1808	REAL( pt_damping_width, KIND=wp ) )**2
1809	ENDIF
1810	ENDDO
1811	ENDIF
1812
1813	!
1814	!-- Initialize local summation arrays for routine flow_statistics.
1815	!-- This is necessary because they may not yet have been initialized when they
1816	!-- are called from flow_statistics (or - depending on the chosen model run -
1817	!-- are never initialized)
1818	sums_divnew_l = 0.0_wp
1819	sums_divold_l = 0.0_wp
1820	sums_l_l = 0.0_wp
1821	sums_up_fraction_l = 0.0_wp
1822	sums_wsts_bc_l = 0.0_wp
1823
1824	!
1825	!-- Pre-set masks for regional statistics. Default is the total model domain.
1826	!-- Ghost points are excluded because counting values at the ghost boundaries
1827	!-- would bias the statistics
1828	rmask = 1.0_wp
1829	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
1830	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
1831
1832	!
1833	!-- User-defined initializing actions. Check afterwards, if maximum number
1834	!-- of allowed timeseries is exceeded
1835	CALL user_init
1836
1837	IF ( dots_num > dots_max ) THEN
1838	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1839	' its maximum of dots_max = ', dots_max, &
1840	' &Please increase dots_max in modules.f90.'
1841	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1842	ENDIF
1843
1844	!
1845	!-- Input binary data file is not needed anymore. This line must be placed
1846	!-- after call of user_init!
1847	CALL close_file( 13 )
1848
1849	!
1850	!-- Compute total sum of active mask grid points
1851	!-- and the mean surface level height for each statistic region
1852	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1853	!-- total domain
1854	!-- ngp_3d: number of grid points of the total domain
1855	ngp_2dh_outer_l = 0
1856	ngp_2dh_outer = 0
1857	ngp_2dh_s_inner_l = 0
1858	ngp_2dh_s_inner = 0
1859	ngp_2dh_l = 0
1860	ngp_2dh = 0
1861	ngp_3d_inner_l = 0.0_wp
1862	ngp_3d_inner = 0
1863	ngp_3d = 0
1864	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1865
1866	mean_surface_level_height = 0.0_wp
1867	mean_surface_level_height_l = 0.0_wp
1868
1869	DO sr = 0, statistic_regions
1870	DO i = nxl, nxr
1871	DO j = nys, nyn
1872	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
1873	!
1874	!-- All xy-grid points
1875	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1876	mean_surface_level_height_l(sr) = mean_surface_level_height_l(sr) &
1877	+ zw(nzb_s_inner(j,i))
1878	!
1879	!-- xy-grid points above topography
1880	DO k = nzb_s_outer(j,i), nz + 1
1881	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1882	ENDDO
1883	DO k = nzb_s_inner(j,i), nz + 1
1884	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1885	ENDDO
1886	!
1887	!-- All grid points of the total domain above topography
1888	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) &
1889	+ ( nz - nzb_s_inner(j,i) + 2 )
1890	ENDIF
1891	ENDDO
1892	ENDDO
1893	ENDDO
1894
1895	sr = statistic_regions + 1
1896	#if defined( __parallel )
1897	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1898	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1899	comm2d, ierr )
1900	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1901	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1902	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1903	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1904	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1905	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1906	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1907	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1908	MPI_SUM, comm2d, ierr )
1909	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1910	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1911	CALL MPI_ALLREDUCE( mean_surface_level_height_l(0), &
1912	mean_surface_level_height(0), sr, MPI_REAL, &
1913	MPI_SUM, comm2d, ierr )
1914	mean_surface_level_height = mean_surface_level_height / REAL( ngp_2dh )
1915	#else
1916	ngp_2dh = ngp_2dh_l
1917	ngp_2dh_outer = ngp_2dh_outer_l
1918	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1919	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1920	mean_surface_level_height = mean_surface_level_height_l / REAL( ngp_2dh_l )
1921	#endif
1922
1923	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1924	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1925
1926	!
1927	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1928	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1929	!-- the respective subdomain lie below the surface topography
1930	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1931	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1932	ngp_3d_inner(:) )
1933	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1934
1935	DEALLOCATE( mean_surface_level_height_l, ngp_2dh_l, ngp_2dh_outer_l, &
1936	ngp_3d_inner_l, ngp_3d_inner_tmp )
1937
1938	CALL location_message( 'leaving init_3d_model', .TRUE. )
1939
1940	END SUBROUTINE init_3d_model

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