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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1823

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

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