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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1836

Last change on this file since 1836 was 1834, checked in by raasch, 9 years ago
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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 1997-2016 Leibniz Universitaet Hannover
17	!--------------------------------------------------------------------------------!
18	!
19	! Current revisions:
20	! ------------------
21	!
22	!
23	! Former revisions:
24	! -----------------
25	! $Id: init_3d_model.f90 1834 2016-04-07 14:34:20Z raasch $
26	!
27	! 1833 2016-04-07 14:23:03Z raasch
28	! initialization of spectra quantities moved to spectra_mod
29	!
30	! 1831 2016-04-07 13:15:51Z hoffmann
31	! turbulence renamed collision_turbulence
32	!
33	! 1826 2016-04-07 12:01:39Z maronga
34	! Renamed radiation calls.
35	! Renamed canopy model calls.
36	!
37	! 1822 2016-04-07 07:49:42Z hoffmann
38	! icloud_scheme replaced by microphysics_*
39	!
40	! 1817 2016-04-06 15:44:20Z maronga
41	! Renamed lsm calls.
42	!
43	! 1815 2016-04-06 13:49:59Z raasch
44	! zero-settings for velocities inside topography re-activated (was deactivated
45	! in r1762)
46	!
47	! 1788 2016-03-10 11:01:04Z maronga
48	! Added z0q.
49	! Syntax layout improved.
50	!
51	! 1783 2016-03-06 18:36:17Z raasch
52	! netcdf module name changed + related changes
53	!
54	! 1764 2016-02-28 12:45:19Z raasch
55	! bugfix: increase size of volume_flow_area_l and volume_flow_initial_l by 1
56	!
57	! 1762 2016-02-25 12:31:13Z hellstea
58	! Introduction of nested domain feature
59	!
60	! 1738 2015-12-18 13:56:05Z raasch
61	! calculate mean surface level height for each statistic region
62	!
63	! 1734 2015-12-02 12:17:12Z raasch
64	! no initial disturbances in case that the disturbance energy limit has been
65	! set zero
66	!
67	! 1707 2015-11-02 15:24:52Z maronga
68	! Bugfix: transfer of Richardson number from 1D model to Obukhov length caused
69	! devision by zero in neutral stratification
70	!
71	! 1691 2015-10-26 16:17:44Z maronga
72	! Call to init_surface_layer added. rif is replaced by ol and zeta.
73	!
74	! 1682 2015-10-07 23:56:08Z knoop
75	! Code annotations made doxygen readable
76	!
77	! 1615 2015-07-08 18:49:19Z suehring
78	! Enable turbulent inflow for passive_scalar and humidity
79	!
80	! 1585 2015-04-30 07:05:52Z maronga
81	! Initialization of radiation code is now done after LSM initializtion
82	!
83	! 1575 2015-03-27 09:56:27Z raasch
84	! adjustments for psolver-queries
85	!
86	! 1551 2015-03-03 14:18:16Z maronga
87	! Allocation of land surface arrays is now done in the subroutine lsm_init_arrays,
88	! which is part of land_surface_model.
89	!
90	! 1507 2014-12-10 12:14:18Z suehring
91	! Bugfix: set horizontal velocity components to zero inside topography
92	!
93	! 1496 2014-12-02 17:25:50Z maronga
94	! Added initialization of the land surface and radiation schemes
95	!
96	! 1484 2014-10-21 10:53:05Z kanani
97	! Changes due to new module structure of the plant canopy model:
98	! canopy-related initialization (e.g. lad and canopy_heat_flux) moved to new
99	! subroutine init_plant_canopy within the module plant_canopy_model_mod,
100	! call of subroutine init_plant_canopy added.
101	!
102	! 1431 2014-07-15 14:47:17Z suehring
103	! var_d added, in order to normalize spectra.
104	!
105	! 1429 2014-07-15 12:53:45Z knoop
106	! Ensemble run capability added to parallel random number generator
107	!
108	! 1411 2014-05-16 18:01:51Z suehring
109	! Initial horizontal velocity profiles were not set to zero at the first vertical
110	! grid level in case of non-cyclic lateral boundary conditions.
111	!
112	! 1406 2014-05-16 13:47:01Z raasch
113	! bugfix: setting of initial velocities at k=1 to zero not in case of a
114	! no-slip boundary condition for uv
115	!
116	! 1402 2014-05-09 14:25:13Z raasch
117	! location messages modified
118	!
119	! 1400 2014-05-09 14:03:54Z knoop
120	! Parallel random number generator added
121	!
122	! 1384 2014-05-02 14:31:06Z raasch
123	! location messages added
124	!
125	! 1361 2014-04-16 15:17:48Z hoffmann
126	! tend_* removed
127	! Bugfix: w_subs is not allocated anymore if it is already allocated
128	!
129	! 1359 2014-04-11 17:15:14Z hoffmann
130	! module lpm_init_mod added to use statements, because lpm_init has become a
131	! module
132	!
133	! 1353 2014-04-08 15:21:23Z heinze
134	! REAL constants provided with KIND-attribute
135	!
136	! 1340 2014-03-25 19:45:13Z kanani
137	! REAL constants defined as wp-kind
138	!
139	! 1322 2014-03-20 16:38:49Z raasch
140	! REAL constants defined as wp-kind
141	! module interfaces removed
142	!
143	! 1320 2014-03-20 08:40:49Z raasch
144	! ONLY-attribute added to USE-statements,
145	! kind-parameters added to all INTEGER and REAL declaration statements,
146	! kinds are defined in new module kinds,
147	! revision history before 2012 removed,
148	! comment fields (!:) to be used for variable explanations added to
149	! all variable declaration statements
150	!
151	! 1316 2014-03-17 07:44:59Z heinze
152	! Bugfix: allocation of w_subs
153	!
154	! 1299 2014-03-06 13:15:21Z heinze
155	! Allocate w_subs due to extension of large scale subsidence in combination
156	! with large scale forcing data (LSF_DATA)
157	!
158	! 1241 2013-10-30 11:36:58Z heinze
159	! Overwrite initial profiles in case of nudging
160	! Inititialize shf and qsws in case of large_scale_forcing
161	!
162	! 1221 2013-09-10 08:59:13Z raasch
163	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
164	! copy
165	!
166	! 1212 2013-08-15 08:46:27Z raasch
167	! array tri is allocated and included in data copy statement
168	!
169	! 1195 2013-07-01 12:27:57Z heinze
170	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
171	!
172	! 1179 2013-06-14 05:57:58Z raasch
173	! allocate and set ref_state to be used in buoyancy terms
174	!
175	! 1171 2013-05-30 11:27:45Z raasch
176	! diss array is allocated with full size if accelerator boards are used
177	!
178	! 1159 2013-05-21 11:58:22Z fricke
179	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
180	!
181	! 1153 2013-05-10 14:33:08Z raasch
182	! diss array is allocated with dummy elements even if it is not needed
183	! (required by PGI 13.4 / CUDA 5.0)
184	!
185	! 1115 2013-03-26 18:16:16Z hoffmann
186	! unused variables removed
187	!
188	! 1113 2013-03-10 02:48:14Z raasch
189	! openACC directive modified
190	!
191	! 1111 2013-03-08 23:54:10Z raasch
192	! openACC directives added for pres
193	! array diss allocated only if required
194	!
195	! 1092 2013-02-02 11:24:22Z raasch
196	! unused variables removed
197	!
198	! 1065 2012-11-22 17:42:36Z hoffmann
199	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
200	!
201	! 1053 2012-11-13 17:11:03Z hoffmann
202	! allocation and initialisation of necessary data arrays for the two-moment
203	! cloud physics scheme the two new prognostic equations (nr, qr):
204	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
205	! +tend_*, prr
206	!
207	! 1036 2012-10-22 13:43:42Z raasch
208	! code put under GPL (PALM 3.9)
209	!
210	! 1032 2012-10-21 13:03:21Z letzel
211	! save memory by not allocating pt_2 in case of neutral = .T.
212	!
213	! 1025 2012-10-07 16:04:41Z letzel
214	! bugfix: swap indices of mask for ghost boundaries
215	!
216	! 1015 2012-09-27 09:23:24Z raasch
217	! mask is set to zero for ghost boundaries
218	!
219	! 1010 2012-09-20 07:59:54Z raasch
220	! cpp switch __nopointer added for pointer free version
221	!
222	! 1003 2012-09-14 14:35:53Z raasch
223	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
224	!
225	! 1001 2012-09-13 14:08:46Z raasch
226	! all actions concerning leapfrog scheme removed
227	!
228	! 996 2012-09-07 10:41:47Z raasch
229	! little reformatting
230	!
231	! 978 2012-08-09 08:28:32Z fricke
232	! outflow damping layer removed
233	! roughness length for scalar quantites z0h added
234	! damping zone for the potential temperatur in case of non-cyclic lateral
235	! boundaries added
236	! initialization of ptdf_x, ptdf_y
237	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
238	!
239	! 849 2012-03-15 10:35:09Z raasch
240	! init_particles renamed lpm_init
241	!
242	! 825 2012-02-19 03:03:44Z raasch
243	! wang_collision_kernel renamed wang_kernel
244	!
245	! Revision 1.1 1998/03/09 16:22:22 raasch
246	! Initial revision
247	!
248	!
249	! Description:
250	! ------------
251	!> Allocation of arrays and initialization of the 3D model via
252	!> a) pre-run the 1D model
253	!> or
254	!> b) pre-set constant linear profiles
255	!> or
256	!> c) read values of a previous run
257	!------------------------------------------------------------------------------!
258	SUBROUTINE init_3d_model
259
260
261	USE advec_ws
262
263	USE arrays_3d
264
265	USE cloud_parameters, &
266	ONLY: collision_turbulence, nc_const, precipitation_amount, &
267	precipitation_rate, prr
268
269	USE constants, &
270	ONLY: pi
271
272	USE control_parameters
273
274	USE grid_variables, &
275	ONLY: dx, dy
276
277	USE indices
278
279	USE lpm_init_mod, &
280	ONLY: lpm_init
281
282	USE kinds
283
284	USE land_surface_model_mod, &
285	ONLY: lsm_init, lsm_init_arrays, land_surface
286
287	USE ls_forcing_mod
288
289	USE model_1d, &
290	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
291
292	USE netcdf_interface, &
293	ONLY: dots_max, dots_num
294
295	USE particle_attributes, &
296	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
297
298	USE pegrid
299
300	USE plant_canopy_model_mod, &
301	ONLY: pcm_init, plant_canopy
302
303	USE radiation_model_mod, &
304	ONLY: radiation_init, radiation
305
306	USE random_function_mod
307
308	USE random_generator_parallel, &
309	ONLY: random_number_parallel, random_seed_parallel, random_dummy, &
310	id_random_array, seq_random_array
311
312	USE statistics, &
313	ONLY: hom, hom_sum, mean_surface_level_height, pr_palm, rmask, &
314	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
315	sums_l_l, sums_up_fraction_l, sums_wsts_bc_l, ts_value, &
316	weight_pres, weight_substep
317
318	USE surface_layer_fluxes_mod, &
319	ONLY: init_surface_layer_fluxes
320
321	USE transpose_indices
322
323	IMPLICIT NONE
324
325	INTEGER(iwp) :: i !<
326	INTEGER(iwp) :: ind_array(1) !<
327	INTEGER(iwp) :: j !<
328	INTEGER(iwp) :: k !<
329	INTEGER(iwp) :: sr !<
330
331	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !<
332
333	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !<
334	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !<
335
336	REAL(wp), DIMENSION(1:3) :: volume_flow_area_l !<
337	REAL(wp), DIMENSION(1:3) :: volume_flow_initial_l !<
338
339	REAL(wp), DIMENSION(:), ALLOCATABLE :: mean_surface_level_height_l !<
340	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !<
341	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !<
342
343
344	CALL location_message( 'allocating arrays', .FALSE. )
345	!
346	!-- Allocate arrays
347	ALLOCATE( mean_surface_level_height(0:statistic_regions), &
348	mean_surface_level_height_l(0:statistic_regions), &
349	ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
350	ngp_3d(0:statistic_regions), &
351	ngp_3d_inner(0:statistic_regions), &
352	ngp_3d_inner_l(0:statistic_regions), &
353	ngp_3d_inner_tmp(0:statistic_regions), &
354	sums_divnew_l(0:statistic_regions), &
355	sums_divold_l(0:statistic_regions) )
356	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
357	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
358	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
359	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
360	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
361	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
362	sums(nzb:nzt+1,pr_palm+max_pr_user), &
363	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
364	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
365	sums_up_fraction_l(10,3,0:statistic_regions), &
366	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
367	ts_value(dots_max,0:statistic_regions) )
368	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
369
370	ALLOCATE( ol(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
371	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
372	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
373	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
374	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
375	z0h(nysg:nyng,nxlg:nxrg), z0q(nysg:nyng,nxlg:nxrg) )
376
377	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
378	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
379	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
380	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
381	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
382
383	#if defined( __nopointer )
384	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
385	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
386	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
387	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
388	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
389	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
390	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
391	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
392	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
393	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
394	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
395	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
396	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
397	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
398	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
399	#else
400	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
401	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
402	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
403	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
404	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
405	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
406	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
407	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
408	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
409	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
410	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
411	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
412	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
413	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
414	IF ( .NOT. neutral ) THEN
415	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
416	ENDIF
417	#endif
418
419	!
420	!-- Following array is required for perturbation pressure within the iterative
421	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
422	!-- the weighted average of the substeps and cannot be used in the Poisson
423	!-- solver.
424	IF ( psolver == 'sor' ) THEN
425	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
426	ELSEIF ( psolver(1:9) == 'multigrid' ) THEN
427	!
428	!-- For performance reasons, multigrid is using one ghost layer only
429	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
430	ENDIF
431
432	!
433	!-- Array for storing constant coeffficients of the tridiagonal solver
434	IF ( psolver == 'poisfft' ) THEN
435	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
436	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
437	ENDIF
438
439	IF ( humidity .OR. passive_scalar ) THEN
440	!
441	!-- 2D-humidity/scalar arrays
442	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
443	qsws(nysg:nyng,nxlg:nxrg), &
444	qswst(nysg:nyng,nxlg:nxrg) )
445
446	!
447	!-- 3D-humidity/scalar arrays
448	#if defined( __nopointer )
449	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
450	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
451	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
452	#else
453	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
454	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
455	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
456	#endif
457
458	!
459	!-- 3D-arrays needed for humidity only
460	IF ( humidity ) THEN
461	#if defined( __nopointer )
462	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
463	#else
464	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
465	#endif
466
467	IF ( cloud_physics ) THEN
468
469	!
470	!-- Liquid water content
471	#if defined( __nopointer )
472	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
473	#else
474	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
475	#endif
476	!
477	!-- Precipitation amount and rate (only needed if output is switched)
478	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
479	precipitation_rate(nysg:nyng,nxlg:nxrg) )
480
481	!
482	!-- 1D-arrays
483	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
484	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
485	!
486	!-- 3D-cloud water content
487	#if defined( __nopointer )
488	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
489	#else
490	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
491	#endif
492	!
493	!-- 3d-precipitation rate
494	ALLOCATE( prr(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
495
496	IF ( microphysics_seifert ) THEN
497	!
498	!-- 1D-arrays
499	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
500
501	!
502	!-- 2D-rain water content and rain drop concentration arrays
503	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
504	qrsws(nysg:nyng,nxlg:nxrg), &
505	qrswst(nysg:nyng,nxlg:nxrg), &
506	nrs(nysg:nyng,nxlg:nxrg), &
507	nrsws(nysg:nyng,nxlg:nxrg), &
508	nrswst(nysg:nyng,nxlg:nxrg) )
509	!
510	!-- 3D-rain water content, rain drop concentration arrays
511	#if defined( __nopointer )
512	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
513	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
514	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
515	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
516	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
517	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
518	#else
519	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
520	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
521	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
522	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
523	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
524	qr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
525	#endif
526	ENDIF
527
528	ENDIF
529
530	IF ( cloud_droplets ) THEN
531	!
532	!-- Liquid water content, change in liquid water content
533	#if defined( __nopointer )
534	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
535	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
536	#else
537	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
538	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
539	#endif
540	!
541	!-- Real volume of particles (with weighting), volume of particles
542	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
543	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
544	ENDIF
545
546	ENDIF
547
548	ENDIF
549
550	IF ( ocean ) THEN
551	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
552	saswst(nysg:nyng,nxlg:nxrg) )
553	#if defined( __nopointer )
554	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
555	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
556	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
557	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
558	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
559	#else
560	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
561	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
562	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
563	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
564	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
565	prho => prho_1
566	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
567	! density to be apointer
568	#endif
569	IF ( humidity_remote ) THEN
570	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
571	qswst_remote = 0.0_wp
572	ENDIF
573	ENDIF
574
575	!
576	!-- 3D-array for storing the dissipation, needed for calculating the sgs
577	!-- particle velocities
578	IF ( use_sgs_for_particles .OR. wang_kernel .OR. collision_turbulence &
579	.OR. num_acc_per_node > 0 ) THEN
580	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
581	ENDIF
582
583	!
584	!-- 1D-array for large scale subsidence velocity
585	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
586	ALLOCATE ( w_subs(nzb:nzt+1) )
587	w_subs = 0.0_wp
588	ENDIF
589
590	!
591	!-- ID-array and state-space-array for the parallel random number generator
592	IF ( random_generator == 'random-parallel' ) THEN
593	ALLOCATE ( seq_random_array(5,nysg:nyng,nxlg:nxrg) )
594	ALLOCATE ( id_random_array(0:ny,0:nx) )
595	seq_random_array = 0
596	id_random_array = 0
597	ENDIF
598
599	!
600	!-- 4D-array for storing the Rif-values at vertical walls
601	IF ( topography /= 'flat' ) THEN
602	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
603	rif_wall = 0.0_wp
604	ENDIF
605
606	!
607	!-- Arrays to store velocity data from t-dt and the phase speeds which
608	!-- are needed for radiation boundary conditions
609	IF ( outflow_l ) THEN
610	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
611	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
612	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
613	ENDIF
614	IF ( outflow_r ) THEN
615	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
616	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
617	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
618	ENDIF
619	IF ( outflow_l .OR. outflow_r ) THEN
620	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
621	c_w(nzb:nzt+1,nysg:nyng) )
622	ENDIF
623	IF ( outflow_s ) THEN
624	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
625	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
626	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
627	ENDIF
628	IF ( outflow_n ) THEN
629	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
630	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
631	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
632	ENDIF
633	IF ( outflow_s .OR. outflow_n ) THEN
634	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
635	c_w(nzb:nzt+1,nxlg:nxrg) )
636	ENDIF
637	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
638	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
639	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
640	ENDIF
641
642
643	#if ! defined( __nopointer )
644	!
645	!-- Initial assignment of the pointers
646	e => e_1; e_p => e_2; te_m => e_3
647	IF ( .NOT. neutral ) THEN
648	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
649	ELSE
650	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
651	ENDIF
652	u => u_1; u_p => u_2; tu_m => u_3
653	v => v_1; v_p => v_2; tv_m => v_3
654	w => w_1; w_p => w_2; tw_m => w_3
655
656	IF ( humidity .OR. passive_scalar ) THEN
657	q => q_1; q_p => q_2; tq_m => q_3
658	IF ( humidity ) THEN
659	vpt => vpt_1
660	IF ( cloud_physics ) THEN
661	ql => ql_1
662	qc => qc_1
663	IF ( microphysics_seifert ) THEN
664	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
665	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
666	ENDIF
667	ENDIF
668	ENDIF
669	IF ( cloud_droplets ) THEN
670	ql => ql_1
671	ql_c => ql_2
672	ENDIF
673	ENDIF
674
675	IF ( ocean ) THEN
676	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
677	ENDIF
678	#endif
679
680	!
681	!-- Allocate land surface model arrays
682	IF ( land_surface ) THEN
683	CALL lsm_init_arrays
684	ENDIF
685
686	!
687	!-- Allocate arrays containing the RK coefficient for calculation of
688	!-- perturbation pressure and turbulent fluxes. At this point values are
689	!-- set for pressure calculation during initialization (where no timestep
690	!-- is done). Further below the values needed within the timestep scheme
691	!-- will be set.
692	!-- TO_DO: zeroth element added to weight_pres because in case of nesting
693	!-- pres may need to be called outside the RK-substeps. Antti will
694	!-- check if this is really required.
695	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
696	weight_pres(0:intermediate_timestep_count_max) )
697	weight_substep = 1.0_wp
698	weight_pres = 1.0_wp
699	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
700
701	CALL location_message( 'finished', .TRUE. )
702	!
703	!-- Initialize model variables
704	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
705	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
706	!
707	!-- First model run of a possible job queue.
708	!-- Initial profiles of the variables must be computes.
709	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
710
711	CALL location_message( 'initializing with 1D model profiles', .FALSE. )
712	!
713	!-- Use solutions of the 1D model as initial profiles,
714	!-- start 1D model
715	CALL init_1d_model
716	!
717	!-- Transfer initial profiles to the arrays of the 3D model
718	DO i = nxlg, nxrg
719	DO j = nysg, nyng
720	e(:,j,i) = e1d
721	kh(:,j,i) = kh1d
722	km(:,j,i) = km1d
723	pt(:,j,i) = pt_init
724	u(:,j,i) = u1d
725	v(:,j,i) = v1d
726	ENDDO
727	ENDDO
728
729	IF ( humidity .OR. passive_scalar ) THEN
730	DO i = nxlg, nxrg
731	DO j = nysg, nyng
732	q(:,j,i) = q_init
733	ENDDO
734	ENDDO
735	IF ( cloud_physics .AND. microphysics_seifert ) THEN
736	DO i = nxlg, nxrg
737	DO j = nysg, nyng
738	qr(:,j,i) = 0.0_wp
739	nr(:,j,i) = 0.0_wp
740	ENDDO
741	ENDDO
742	!
743	!-- Initialze nc_1d with default value
744	nc_1d(:) = nc_const
745
746	ENDIF
747	ENDIF
748
749	IF ( .NOT. constant_diffusion ) THEN
750	DO i = nxlg, nxrg
751	DO j = nysg, nyng
752	e(:,j,i) = e1d
753	ENDDO
754	ENDDO
755	!
756	!-- Store initial profiles for output purposes etc.
757	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
758
759	IF ( constant_flux_layer ) THEN
760	ol = ( zu(nzb+1) - zw(nzb) ) / ( rif1d(nzb+1) + 1.0E-20_wp )
761	ts = 0.0_wp ! could actually be computed more accurately in the
762	! 1D model. Update when opportunity arises.
763	us = us1d
764	usws = usws1d
765	vsws = vsws1d
766	ELSE
767	ts = 0.0_wp ! must be set, because used in
768	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
769	us = 0.0_wp
770	usws = 0.0_wp
771	vsws = 0.0_wp
772	ENDIF
773
774	ELSE
775	e = 0.0_wp ! must be set, because used in
776	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
777	ts = 0.0_wp
778	us = 0.0_wp
779	usws = 0.0_wp
780	vsws = 0.0_wp
781	ENDIF
782	uswst = top_momentumflux_u
783	vswst = top_momentumflux_v
784
785	!
786	!-- In every case qs = 0.0 (see also pt)
787	!-- This could actually be computed more accurately in the 1D model.
788	!-- Update when opportunity arises!
789	IF ( humidity .OR. passive_scalar ) THEN
790	qs = 0.0_wp
791	IF ( cloud_physics .AND. microphysics_seifert ) THEN
792	qrs = 0.0_wp
793	nrs = 0.0_wp
794	ENDIF
795	ENDIF
796
797	!
798	!-- Inside buildings set velocities back to zero
799	IF ( topography /= 'flat' ) THEN
800	DO i = nxlg, nxrg
801	DO j = nysg, nyng
802	u(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
803	v(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
804	ENDDO
805	ENDDO
806
807	!
808	!-- WARNING: The extra boundary conditions set after running the
809	!-- ------- 1D model impose an error on the divergence one layer
810	!-- below the topography; need to correct later
811	!-- ATTENTION: Provisional correction for Piacsek & Williams
812	!-- --------- advection scheme: keep u and v zero one layer below
813	!-- the topography.
814	IF ( ibc_uv_b == 1 ) THEN
815	!
816	!-- Neumann condition
817	DO i = nxl-1, nxr+1
818	DO j = nys-1, nyn+1
819	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
820	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
821	ENDDO
822	ENDDO
823
824	ENDIF
825
826	ENDIF
827
828	CALL location_message( 'finished', .TRUE. )
829
830	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
831	THEN
832
833	CALL location_message( 'initializing with constant profiles', .FALSE. )
834	!
835	!-- Overwrite initial profiles in case of nudging
836	IF ( nudging ) THEN
837	pt_init = ptnudge(:,1)
838	u_init = unudge(:,1)
839	v_init = vnudge(:,1)
840	IF ( humidity .OR. passive_scalar ) THEN
841	q_init = qnudge(:,1)
842	ENDIF
843
844	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
845	'scalars from NUDGING_DATA are used.'
846	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
847	ENDIF
848
849	!
850	!-- Use constructed initial profiles (velocity constant with height,
851	!-- temperature profile with constant gradient)
852	DO i = nxlg, nxrg
853	DO j = nysg, nyng
854	pt(:,j,i) = pt_init
855	u(:,j,i) = u_init
856	v(:,j,i) = v_init
857	ENDDO
858	ENDDO
859
860	!
861	!-- Set initial horizontal velocities at the lowest computational grid
862	!-- levels to zero in order to avoid too small time steps caused by the
863	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
864	!-- in the limiting formula!).
865	IF ( ibc_uv_b /= 1 ) THEN
866	DO i = nxlg, nxrg
867	DO j = nysg, nyng
868	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0_wp
869	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0_wp
870	ENDDO
871	ENDDO
872	ENDIF
873
874	IF ( humidity .OR. passive_scalar ) THEN
875	DO i = nxlg, nxrg
876	DO j = nysg, nyng
877	q(:,j,i) = q_init
878	ENDDO
879	ENDDO
880	IF ( cloud_physics .AND. microphysics_seifert ) THEN
881	!
882	!-- Initialze nc_1d with default value
883	nc_1d(:) = nc_const
884
885	DO i = nxlg, nxrg
886	DO j = nysg, nyng
887	qr(:,j,i) = 0.0_wp
888	nr(:,j,i) = 0.0_wp
889	ENDDO
890	ENDDO
891
892	ENDIF
893	ENDIF
894
895	IF ( ocean ) THEN
896	DO i = nxlg, nxrg
897	DO j = nysg, nyng
898	sa(:,j,i) = sa_init
899	ENDDO
900	ENDDO
901	ENDIF
902
903	IF ( constant_diffusion ) THEN
904	km = km_constant
905	kh = km / prandtl_number
906	e = 0.0_wp
907	ELSEIF ( e_init > 0.0_wp ) THEN
908	DO k = nzb+1, nzt
909	km(k,:,:) = 0.1_wp * l_grid(k) * SQRT( e_init )
910	ENDDO
911	km(nzb,:,:) = km(nzb+1,:,:)
912	km(nzt+1,:,:) = km(nzt,:,:)
913	kh = km / prandtl_number
914	e = e_init
915	ELSE
916	IF ( .NOT. ocean ) THEN
917	kh = 0.01_wp ! there must exist an initial diffusion, because
918	km = 0.01_wp ! otherwise no TKE would be produced by the
919	! production terms, as long as not yet
920	! e = (u/cm)*2 at k=nzb+1
921	ELSE
922	kh = 0.00001_wp
923	km = 0.00001_wp
924	ENDIF
925	e = 0.0_wp
926	ENDIF
927	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min
928	ts = 0.0_wp
929	us = 0.0_wp
930	usws = 0.0_wp
931	uswst = top_momentumflux_u
932	vsws = 0.0_wp
933	vswst = top_momentumflux_v
934	IF ( humidity .OR. passive_scalar ) qs = 0.0_wp
935
936	!
937	!-- Compute initial temperature field and other constants used in case
938	!-- of a sloping surface
939	IF ( sloping_surface ) CALL init_slope
940
941	CALL location_message( 'finished', .TRUE. )
942
943	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
944	THEN
945
946	CALL location_message( 'initializing by user', .FALSE. )
947	!
948	!-- Initialization will completely be done by the user
949	CALL user_init_3d_model
950
951	CALL location_message( 'finished', .TRUE. )
952
953	ENDIF
954
955	CALL location_message( 'initializing statistics, boundary conditions, etc.', &
956	.FALSE. )
957
958	!
959	!-- Bottom boundary
960	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
961	u(nzb,:,:) = 0.0_wp
962	v(nzb,:,:) = 0.0_wp
963	ENDIF
964
965	!
966	!-- Apply channel flow boundary condition
967	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
968	u(nzt+1,:,:) = 0.0_wp
969	v(nzt+1,:,:) = 0.0_wp
970	ENDIF
971
972	!
973	!-- Calculate virtual potential temperature
974	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
975
976	!
977	!-- Store initial profiles for output purposes etc.
978	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
979	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
980	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
981	hom(nzb,1,5,:) = 0.0_wp
982	hom(nzb,1,6,:) = 0.0_wp
983	ENDIF
984	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
985	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
986	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
987
988	IF ( ocean ) THEN
989	!
990	!-- Store initial salinity profile
991	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
992	ENDIF
993
994	IF ( humidity ) THEN
995	!
996	!-- Store initial profile of total water content, virtual potential
997	!-- temperature
998	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
999	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
1000	IF ( cloud_physics .OR. cloud_droplets ) THEN
1001	!
1002	!-- Store initial profile of specific humidity and potential
1003	!-- temperature
1004	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1005	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
1006	ENDIF
1007	ENDIF
1008
1009	IF ( passive_scalar ) THEN
1010	!
1011	!-- Store initial scalar profile
1012	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1013	ENDIF
1014
1015	!
1016	!-- Initialize the random number generators (from numerical recipes)
1017	CALL random_function_ini
1018
1019	IF ( random_generator == 'random-parallel' ) THEN
1020	!-- Asigning an ID to every vertical gridpoint column
1021	!-- dependig on the ensemble run number.
1022	random_dummy=1
1023	DO j=0,ny
1024	DO i=0,nx
1025	id_random_array(j,i) = random_dummy + 1E6 &
1026	* ( ensemble_member_nr - 1000 )
1027	random_dummy = random_dummy + 1
1028	END DO
1029	ENDDO
1030	!-- Initializing with random_seed_parallel for every vertical
1031	!-- gridpoint column.
1032	random_dummy=0
1033	DO j = nysg, nyng
1034	DO i = nxlg, nxrg
1035	CALL random_seed_parallel (random_sequence=id_random_array(j, i))
1036	CALL random_number_parallel (random_dummy)
1037	CALL random_seed_parallel (get=seq_random_array(:, j, i))
1038	END DO
1039	ENDDO
1040	ENDIF
1041
1042	!
1043	!-- Initialize fluxes at bottom surface
1044	IF ( use_surface_fluxes ) THEN
1045
1046	IF ( constant_heatflux ) THEN
1047	!
1048	!-- Heat flux is prescribed
1049	IF ( random_heatflux ) THEN
1050	CALL disturb_heatflux
1051	ELSE
1052	shf = surface_heatflux
1053	!
1054	!-- Initialize shf with data from external file LSF_DATA
1055	IF ( large_scale_forcing .AND. lsf_surf ) THEN
1056	CALL ls_forcing_surf ( simulated_time )
1057	ENDIF
1058
1059	!
1060	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
1061	IF ( TRIM( topography ) /= 'flat' ) THEN
1062	DO i = nxlg, nxrg
1063	DO j = nysg, nyng
1064	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1065	shf(j,i) = wall_heatflux(0)
1066	ENDIF
1067	ENDDO
1068	ENDDO
1069	ENDIF
1070	ENDIF
1071	ENDIF
1072
1073	!
1074	!-- Determine the near-surface water flux
1075	IF ( humidity .OR. passive_scalar ) THEN
1076	IF ( cloud_physics .AND. microphysics_seifert ) THEN
1077	qrsws = 0.0_wp
1078	nrsws = 0.0_wp
1079	ENDIF
1080	IF ( constant_waterflux ) THEN
1081	qsws = surface_waterflux
1082	!
1083	!-- Over topography surface_waterflux is replaced by
1084	!-- wall_humidityflux(0)
1085	IF ( TRIM( topography ) /= 'flat' ) THEN
1086	wall_qflux = wall_humidityflux
1087	DO i = nxlg, nxrg
1088	DO j = nysg, nyng
1089	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1090	qsws(j,i) = wall_qflux(0)
1091	ENDIF
1092	ENDDO
1093	ENDDO
1094	ENDIF
1095	ENDIF
1096	ENDIF
1097
1098	ENDIF
1099
1100	!
1101	!-- Initialize fluxes at top surface
1102	!-- Currently, only the heatflux and salinity flux can be prescribed.
1103	!-- The latent flux is zero in this case!
1104	IF ( use_top_fluxes ) THEN
1105
1106	IF ( constant_top_heatflux ) THEN
1107	!
1108	!-- Heat flux is prescribed
1109	tswst = top_heatflux
1110
1111	IF ( humidity .OR. passive_scalar ) THEN
1112	qswst = 0.0_wp
1113	IF ( cloud_physics .AND. microphysics_seifert ) 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. microphysics_seifert ) THEN
1154	qrsws = 0.0_wp
1155	nrsws = 0.0_wp
1156	ENDIF
1157	ENDIF
1158
1159	ENDIF
1160
1161	!
1162	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1163	!-- the reference state will be set (overwritten) in init_ocean)
1164	IF ( use_single_reference_value ) THEN
1165	IF ( .NOT. humidity ) THEN
1166	ref_state(:) = pt_reference
1167	ELSE
1168	ref_state(:) = vpt_reference
1169	ENDIF
1170	ELSE
1171	IF ( .NOT. humidity ) THEN
1172	ref_state(:) = pt_init(:)
1173	ELSE
1174	ref_state(:) = vpt(:,nys,nxl)
1175	ENDIF
1176	ENDIF
1177
1178	!
1179	!-- For the moment, vertical velocity is zero
1180	w = 0.0_wp
1181
1182	!
1183	!-- Initialize array sums (must be defined in first call of pres)
1184	sums = 0.0_wp
1185
1186	!
1187	!-- In case of iterative solvers, p must get an initial value
1188	IF ( psolver(1:9) == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
1189
1190	!
1191	!-- Treating cloud physics, liquid water content and precipitation amount
1192	!-- are zero at beginning of the simulation
1193	IF ( cloud_physics ) THEN
1194	ql = 0.0_wp
1195	qc = 0.0_wp
1196
1197	precipitation_amount = 0.0_wp
1198
1199	IF ( microphysics_seifert ) THEN
1200	nc_1d = nc_const
1201	ENDIF
1202	ENDIF
1203	!
1204	!-- Impose vortex with vertical axis on the initial velocity profile
1205	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1206	CALL init_rankine
1207	ENDIF
1208
1209	!
1210	!-- Impose temperature anomaly (advection test only)
1211	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1212	CALL init_pt_anomaly
1213	ENDIF
1214
1215	!
1216	!-- If required, change the surface temperature at the start of the 3D run
1217	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
1218	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1219	ENDIF
1220
1221	!
1222	!-- If required, change the surface humidity/scalar at the start of the 3D
1223	!-- run
1224	IF ( ( humidity .OR. passive_scalar ) .AND. &
1225	q_surface_initial_change /= 0.0_wp ) THEN
1226	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1227	ENDIF
1228
1229	!
1230	!-- Initialize old and new time levels.
1231	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
1232	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1233
1234	IF ( humidity .OR. passive_scalar ) THEN
1235	tq_m = 0.0_wp
1236	q_p = q
1237	IF ( cloud_physics .AND. microphysics_seifert ) 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. microphysics_seifert ) THEN
1423	qr_p = qr
1424	nr_p = nr
1425	ENDIF
1426	ENDIF
1427	IF ( ocean ) sa_p = sa
1428
1429	!
1430	!-- Allthough tendency arrays are set in prognostic_equations, they have
1431	!-- have to be predefined here because they are used (but multiplied with 0)
1432	!-- there before they are set.
1433	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
1434	IF ( humidity .OR. passive_scalar ) THEN
1435	tq_m = 0.0_wp
1436	IF ( cloud_physics .AND. microphysics_seifert ) 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	CALL location_message( 'initializing plant canopy model', .FALSE. )
1635	IF ( plant_canopy ) CALL pcm_init
1636	CALL location_message( 'finished', .TRUE. )
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 lsm_init
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 radiation_init
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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