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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1763

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1	!> @file init_3d_model.f90
2	!--------------------------------------------------------------------------------!
3	! This file is part of PALM.
4	!
5	! PALM is free software: you can redistribute it and/or modify it under the terms
6	! of the GNU General Public License as published by the Free Software Foundation,
7	! either version 3 of the License, or (at your option) any later version.
8	!
9	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
10	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
11	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
12	!
13	! You should have received a copy of the GNU General Public License along with
14	! PALM. If not, see <http://www.gnu.org/licenses/>.
15	!
16	! Copyright 1997-2015 Leibniz Universitaet Hannover
17	!--------------------------------------------------------------------------------!
18	!
19	! Current revisions:
20	! ------------------
21	!
22	!
23	! Former revisions:
24	! -----------------
25	! $Id: init_3d_model.f90 1763 2016-02-25 13:00:19Z hellstea $
26	!
27	! 1762 2016-02-25 12:31:13Z hellstea
28	! Introduction of nested domain feature
29	!
30	! 1738 2015-12-18 13:56:05Z raasch
31	! calculate mean surface level height for each statistic region
32	!
33	! 1734 2015-12-02 12:17:12Z raasch
34	! no initial disturbances in case that the disturbance energy limit has been
35	! set zero
36	!
37	! 1707 2015-11-02 15:24:52Z maronga
38	! Bugfix: transfer of Richardson number from 1D model to Obukhov length caused
39	! devision by zero in neutral stratification
40	!
41	! 1691 2015-10-26 16:17:44Z maronga
42	! Call to init_surface_layer added. rif is replaced by ol and zeta.
43	!
44	! 1682 2015-10-07 23:56:08Z knoop
45	! Code annotations made doxygen readable
46	!
47	! 1615 2015-07-08 18:49:19Z suehring
48	! Enable turbulent inflow for passive_scalar and humidity
49	!
50	! 1585 2015-04-30 07:05:52Z maronga
51	! Initialization of radiation code is now done after LSM initializtion
52	!
53	! 1575 2015-03-27 09:56:27Z raasch
54	! adjustments for psolver-queries
55	!
56	! 1551 2015-03-03 14:18:16Z maronga
57	! Allocation of land surface arrays is now done in the subroutine init_lsm_arrays,
58	! which is part of land_surface_model.
59	!
60	! 1507 2014-12-10 12:14:18Z suehring
61	! Bugfix: set horizontal velocity components to zero inside topography
62	!
63	! 1496 2014-12-02 17:25:50Z maronga
64	! Added initialization of the land surface and radiation schemes
65	!
66	! 1484 2014-10-21 10:53:05Z kanani
67	! Changes due to new module structure of the plant canopy model:
68	! canopy-related initialization (e.g. lad and canopy_heat_flux) moved to new
69	! subroutine init_plant_canopy within the module plant_canopy_model_mod,
70	! call of subroutine init_plant_canopy added.
71	!
72	! 1431 2014-07-15 14:47:17Z suehring
73	! var_d added, in order to normalize spectra.
74	!
75	! 1429 2014-07-15 12:53:45Z knoop
76	! Ensemble run capability added to parallel random number generator
77	!
78	! 1411 2014-05-16 18:01:51Z suehring
79	! Initial horizontal velocity profiles were not set to zero at the first vertical
80	! grid level in case of non-cyclic lateral boundary conditions.
81	!
82	! 1406 2014-05-16 13:47:01Z raasch
83	! bugfix: setting of initial velocities at k=1 to zero not in case of a
84	! no-slip boundary condition for uv
85	!
86	! 1402 2014-05-09 14:25:13Z raasch
87	! location messages modified
88	!
89	! 1400 2014-05-09 14:03:54Z knoop
90	! Parallel random number generator added
91	!
92	! 1384 2014-05-02 14:31:06Z raasch
93	! location messages added
94	!
95	! 1361 2014-04-16 15:17:48Z hoffmann
96	! tend_* removed
97	! Bugfix: w_subs is not allocated anymore if it is already allocated
98	!
99	! 1359 2014-04-11 17:15:14Z hoffmann
100	! module lpm_init_mod added to use statements, because lpm_init has become a
101	! module
102	!
103	! 1353 2014-04-08 15:21:23Z heinze
104	! REAL constants provided with KIND-attribute
105	!
106	! 1340 2014-03-25 19:45:13Z kanani
107	! REAL constants defined as wp-kind
108	!
109	! 1322 2014-03-20 16:38:49Z raasch
110	! REAL constants defined as wp-kind
111	! module interfaces removed
112	!
113	! 1320 2014-03-20 08:40:49Z raasch
114	! ONLY-attribute added to USE-statements,
115	! kind-parameters added to all INTEGER and REAL declaration statements,
116	! kinds are defined in new module kinds,
117	! revision history before 2012 removed,
118	! comment fields (!:) to be used for variable explanations added to
119	! all variable declaration statements
120	!
121	! 1316 2014-03-17 07:44:59Z heinze
122	! Bugfix: allocation of w_subs
123	!
124	! 1299 2014-03-06 13:15:21Z heinze
125	! Allocate w_subs due to extension of large scale subsidence in combination
126	! with large scale forcing data (LSF_DATA)
127	!
128	! 1241 2013-10-30 11:36:58Z heinze
129	! Overwrite initial profiles in case of nudging
130	! Inititialize shf and qsws in case of large_scale_forcing
131	!
132	! 1221 2013-09-10 08:59:13Z raasch
133	! +rflags_s_inner in copyin statement, use copyin for most arrays instead of
134	! copy
135	!
136	! 1212 2013-08-15 08:46:27Z raasch
137	! array tri is allocated and included in data copy statement
138	!
139	! 1195 2013-07-01 12:27:57Z heinze
140	! Bugfix: move allocation of ref_state to parin.f90 and read_var_list.f90
141	!
142	! 1179 2013-06-14 05:57:58Z raasch
143	! allocate and set ref_state to be used in buoyancy terms
144	!
145	! 1171 2013-05-30 11:27:45Z raasch
146	! diss array is allocated with full size if accelerator boards are used
147	!
148	! 1159 2013-05-21 11:58:22Z fricke
149	! -bc_lr_dirneu, bc_lr_neudir, bc_ns_dirneu, bc_ns_neudir
150	!
151	! 1153 2013-05-10 14:33:08Z raasch
152	! diss array is allocated with dummy elements even if it is not needed
153	! (required by PGI 13.4 / CUDA 5.0)
154	!
155	! 1115 2013-03-26 18:16:16Z hoffmann
156	! unused variables removed
157	!
158	! 1113 2013-03-10 02:48:14Z raasch
159	! openACC directive modified
160	!
161	! 1111 2013-03-08 23:54:10Z raasch
162	! openACC directives added for pres
163	! array diss allocated only if required
164	!
165	! 1092 2013-02-02 11:24:22Z raasch
166	! unused variables removed
167	!
168	! 1065 2012-11-22 17:42:36Z hoffmann
169	! allocation of diss (dissipation rate) in case of turbulence = .TRUE. added
170	!
171	! 1053 2012-11-13 17:11:03Z hoffmann
172	! allocation and initialisation of necessary data arrays for the two-moment
173	! cloud physics scheme the two new prognostic equations (nr, qr):
174	! +dr, lambda_r, mu_r, sed_, xr, s, sws, swst, , _p, t_m, _1, _2, _3,
175	! +tend_*, prr
176	!
177	! 1036 2012-10-22 13:43:42Z raasch
178	! code put under GPL (PALM 3.9)
179	!
180	! 1032 2012-10-21 13:03:21Z letzel
181	! save memory by not allocating pt_2 in case of neutral = .T.
182	!
183	! 1025 2012-10-07 16:04:41Z letzel
184	! bugfix: swap indices of mask for ghost boundaries
185	!
186	! 1015 2012-09-27 09:23:24Z raasch
187	! mask is set to zero for ghost boundaries
188	!
189	! 1010 2012-09-20 07:59:54Z raasch
190	! cpp switch __nopointer added for pointer free version
191	!
192	! 1003 2012-09-14 14:35:53Z raasch
193	! nxra,nyna, nzta replaced ny nxr, nyn, nzt
194	!
195	! 1001 2012-09-13 14:08:46Z raasch
196	! all actions concerning leapfrog scheme removed
197	!
198	! 996 2012-09-07 10:41:47Z raasch
199	! little reformatting
200	!
201	! 978 2012-08-09 08:28:32Z fricke
202	! outflow damping layer removed
203	! roughness length for scalar quantites z0h added
204	! damping zone for the potential temperatur in case of non-cyclic lateral
205	! boundaries added
206	! initialization of ptdf_x, ptdf_y
207	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
208	!
209	! 849 2012-03-15 10:35:09Z raasch
210	! init_particles renamed lpm_init
211	!
212	! 825 2012-02-19 03:03:44Z raasch
213	! wang_collision_kernel renamed wang_kernel
214	!
215	! Revision 1.1 1998/03/09 16:22:22 raasch
216	! Initial revision
217	!
218	!
219	! Description:
220	! ------------
221	!> Allocation of arrays and initialization of the 3D model via
222	!> a) pre-run the 1D model
223	!> or
224	!> b) pre-set constant linear profiles
225	!> or
226	!> c) read values of a previous run
227	!------------------------------------------------------------------------------!
228	SUBROUTINE init_3d_model
229
230
231	USE advec_ws
232
233	USE arrays_3d
234
235	USE cloud_parameters, &
236	ONLY: nc_const, precipitation_amount, precipitation_rate, prr
237
238	USE constants, &
239	ONLY: pi
240
241	USE control_parameters
242
243	USE grid_variables, &
244	ONLY: dx, dy
245
246	USE indices
247
248	USE lpm_init_mod, &
249	ONLY: lpm_init
250
251	USE kinds
252
253	USE land_surface_model_mod, &
254	ONLY: init_lsm, init_lsm_arrays, land_surface
255
256	USE ls_forcing_mod
257
258	USE model_1d, &
259	ONLY: e1d, kh1d, km1d, l1d, rif1d, u1d, us1d, usws1d, v1d, vsws1d
260
261	USE netcdf_control
262
263	USE particle_attributes, &
264	ONLY: particle_advection, use_sgs_for_particles, wang_kernel
265
266	USE pegrid
267
268	USE plant_canopy_model_mod, &
269	ONLY: init_plant_canopy, plant_canopy
270
271	USE radiation_model_mod, &
272	ONLY: init_radiation, radiation
273
274	USE random_function_mod
275
276	USE random_generator_parallel, &
277	ONLY: random_number_parallel, random_seed_parallel, random_dummy, &
278	id_random_array, seq_random_array
279
280	USE statistics, &
281	ONLY: hom, hom_sum, mean_surface_level_height, pr_palm, rmask, &
282	spectrum_x, spectrum_y, statistic_regions, sums, sums_divnew_l, &
283	sums_divold_l, sums_l, sums_l_l, sums_up_fraction_l, &
284	sums_wsts_bc_l, ts_value, var_d, weight_pres, weight_substep
285
286	USE surface_layer_fluxes_mod, &
287	ONLY: init_surface_layer_fluxes
288
289	USE transpose_indices
290
291	IMPLICIT NONE
292
293	INTEGER(iwp) :: i !<
294	INTEGER(iwp) :: ind_array(1) !<
295	INTEGER(iwp) :: j !<
296	INTEGER(iwp) :: k !<
297	INTEGER(iwp) :: sr !<
298
299	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !<
300
301	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !<
302	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !<
303
304	REAL(wp), DIMENSION(1:2) :: volume_flow_area_l !<
305	REAL(wp), DIMENSION(1:2) :: volume_flow_initial_l !<
306
307	REAL(wp), DIMENSION(:), ALLOCATABLE :: mean_surface_level_height_l !<
308	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !<
309	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !<
310
311
312	CALL location_message( 'allocating arrays', .FALSE. )
313	!
314	!-- Allocate arrays
315	ALLOCATE( mean_surface_level_height(0:statistic_regions), &
316	mean_surface_level_height_l(0:statistic_regions), &
317	ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
318	ngp_3d(0:statistic_regions), &
319	ngp_3d_inner(0:statistic_regions), &
320	ngp_3d_inner_l(0:statistic_regions), &
321	ngp_3d_inner_tmp(0:statistic_regions), &
322	sums_divnew_l(0:statistic_regions), &
323	sums_divold_l(0:statistic_regions) )
324	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
325	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
326	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
327	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
328	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
329	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
330	sums(nzb:nzt+1,pr_palm+max_pr_user), &
331	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
332	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
333	sums_up_fraction_l(10,3,0:statistic_regions), &
334	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
335	ts_value(dots_max,0:statistic_regions) )
336	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
337
338	ALLOCATE( ol(nysg:nyng,nxlg:nxrg), shf(nysg:nyng,nxlg:nxrg), &
339	ts(nysg:nyng,nxlg:nxrg), tswst(nysg:nyng,nxlg:nxrg), &
340	us(nysg:nyng,nxlg:nxrg), usws(nysg:nyng,nxlg:nxrg), &
341	uswst(nysg:nyng,nxlg:nxrg), vsws(nysg:nyng,nxlg:nxrg), &
342	vswst(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
343	z0h(nysg:nyng,nxlg:nxrg) )
344
345	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
346	kh(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
347	km(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
348	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
349	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
350
351	#if defined( __nopointer )
352	ALLOCATE( e(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
353	e_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
354	pt(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
355	pt_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
356	u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
357	u_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
358	v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
359	v_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
360	w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
361	w_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
362	te_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
363	tpt_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
364	tu_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
365	tv_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
366	tw_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
367	#else
368	ALLOCATE( e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
369	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
370	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
371	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
372	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
373	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
374	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
375	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
376	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
377	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
378	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
379	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
380	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
381	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
382	IF ( .NOT. neutral ) THEN
383	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
384	ENDIF
385	#endif
386
387	!
388	!-- Following array is required for perturbation pressure within the iterative
389	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
390	!-- the weighted average of the substeps and cannot be used in the Poisson
391	!-- solver.
392	IF ( psolver == 'sor' ) THEN
393	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
394	ELSEIF ( psolver(1:9) == 'multigrid' ) THEN
395	!
396	!-- For performance reasons, multigrid is using one ghost layer only
397	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
398	ENDIF
399
400	!
401	!-- Array for storing constant coeffficients of the tridiagonal solver
402	IF ( psolver == 'poisfft' ) THEN
403	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
404	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
405	ENDIF
406
407	IF ( humidity .OR. passive_scalar ) THEN
408	!
409	!-- 2D-humidity/scalar arrays
410	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
411	qsws(nysg:nyng,nxlg:nxrg), &
412	qswst(nysg:nyng,nxlg:nxrg) )
413
414	!
415	!-- 3D-humidity/scalar arrays
416	#if defined( __nopointer )
417	ALLOCATE( q(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
418	q_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
419	tq_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
420	#else
421	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
422	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
423	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
424	#endif
425
426	!
427	!-- 3D-arrays needed for humidity only
428	IF ( humidity ) THEN
429	#if defined( __nopointer )
430	ALLOCATE( vpt(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
431	#else
432	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
433	#endif
434
435	IF ( cloud_physics ) THEN
436
437	!
438	!-- Liquid water content
439	#if defined( __nopointer )
440	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
441	#else
442	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
443	#endif
444	!
445	!-- Precipitation amount and rate (only needed if output is switched)
446	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
447	precipitation_rate(nysg:nyng,nxlg:nxrg) )
448
449	IF ( icloud_scheme == 0 ) THEN
450	!
451	!-- 1D-arrays
452	ALLOCATE ( nc_1d(nzb:nzt+1), pt_1d(nzb:nzt+1), &
453	q_1d(nzb:nzt+1), qc_1d(nzb:nzt+1) )
454	!
455	!-- 3D-cloud water content
456	#if defined( __nopointer )
457	ALLOCATE( qc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
458	#else
459	ALLOCATE( qc_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
460	#endif
461
462	IF ( precipitation ) THEN
463	!
464	!-- 1D-arrays
465	ALLOCATE ( nr_1d(nzb:nzt+1), qr_1d(nzb:nzt+1) )
466
467	!
468	!-- 2D-rain water content and rain drop concentration arrays
469	ALLOCATE ( qrs(nysg:nyng,nxlg:nxrg), &
470	qrsws(nysg:nyng,nxlg:nxrg), &
471	qrswst(nysg:nyng,nxlg:nxrg), &
472	nrs(nysg:nyng,nxlg:nxrg), &
473	nrsws(nysg:nyng,nxlg:nxrg), &
474	nrswst(nysg:nyng,nxlg:nxrg) )
475	!
476	!-- 3D-rain water content, rain drop concentration arrays
477	#if defined( __nopointer )
478	ALLOCATE( nr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
479	nr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
480	qr(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
481	qr_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
482	tnr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
483	tqr_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
484	#else
485	ALLOCATE( nr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
486	nr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
487	nr_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
488	qr_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
489	qr_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
490	qr_3(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	ENDIF
496
497	ENDIF
498	ENDIF
499
500	IF ( cloud_droplets ) THEN
501	!
502	!-- Liquid water content, change in liquid water content
503	#if defined( __nopointer )
504	ALLOCATE ( ql(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
505	ql_c(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
506	#else
507	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
508	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
509	#endif
510	!
511	!-- Real volume of particles (with weighting), volume of particles
512	ALLOCATE ( ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
513	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
514	ENDIF
515
516	ENDIF
517
518	ENDIF
519
520	IF ( ocean ) THEN
521	ALLOCATE( saswsb(nysg:nyng,nxlg:nxrg), &
522	saswst(nysg:nyng,nxlg:nxrg) )
523	#if defined( __nopointer )
524	ALLOCATE( prho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
525	rho(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
526	sa(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
527	sa_p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
528	tsa_m(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
529	#else
530	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
531	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
532	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
533	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
534	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
535	prho => prho_1
536	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
537	! density to be apointer
538	#endif
539	IF ( humidity_remote ) THEN
540	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
541	qswst_remote = 0.0_wp
542	ENDIF
543	ENDIF
544
545	!
546	!-- 3D-array for storing the dissipation, needed for calculating the sgs
547	!-- particle velocities
548	IF ( use_sgs_for_particles .OR. wang_kernel .OR. turbulence .OR. &
549	num_acc_per_node > 0 ) THEN
550	ALLOCATE( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
551	ENDIF
552
553	IF ( dt_dosp /= 9999999.9_wp ) THEN
554	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
555	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
556	spectrum_x = 0.0_wp
557	spectrum_y = 0.0_wp
558
559	ALLOCATE( var_d(nzb:nzt+1) )
560	var_d = 0.0_wp
561	ENDIF
562
563	!
564	!-- 1D-array for large scale subsidence velocity
565	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
566	ALLOCATE ( w_subs(nzb:nzt+1) )
567	w_subs = 0.0_wp
568	ENDIF
569
570	!
571	!-- ID-array and state-space-array for the parallel random number generator
572	IF ( random_generator == 'random-parallel' ) THEN
573	ALLOCATE ( seq_random_array(5,nysg:nyng,nxlg:nxrg) )
574	ALLOCATE ( id_random_array(0:ny,0:nx) )
575	seq_random_array = 0
576	id_random_array = 0
577	ENDIF
578
579	!
580	!-- 4D-array for storing the Rif-values at vertical walls
581	IF ( topography /= 'flat' ) THEN
582	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
583	rif_wall = 0.0_wp
584	ENDIF
585
586	!
587	!-- Arrays to store velocity data from t-dt and the phase speeds which
588	!-- are needed for radiation boundary conditions
589	IF ( outflow_l ) THEN
590	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
591	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
592	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
593	ENDIF
594	IF ( outflow_r ) THEN
595	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
596	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
597	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
598	ENDIF
599	IF ( outflow_l .OR. outflow_r ) THEN
600	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
601	c_w(nzb:nzt+1,nysg:nyng) )
602	ENDIF
603	IF ( outflow_s ) THEN
604	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
605	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
606	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
607	ENDIF
608	IF ( outflow_n ) THEN
609	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
610	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
611	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
612	ENDIF
613	IF ( outflow_s .OR. outflow_n ) THEN
614	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
615	c_w(nzb:nzt+1,nxlg:nxrg) )
616	ENDIF
617	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
618	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
619	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
620	ENDIF
621
622
623	#if ! defined( __nopointer )
624	!
625	!-- Initial assignment of the pointers
626	e => e_1; e_p => e_2; te_m => e_3
627	IF ( .NOT. neutral ) THEN
628	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
629	ELSE
630	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
631	ENDIF
632	u => u_1; u_p => u_2; tu_m => u_3
633	v => v_1; v_p => v_2; tv_m => v_3
634	w => w_1; w_p => w_2; tw_m => w_3
635
636	IF ( humidity .OR. passive_scalar ) THEN
637	q => q_1; q_p => q_2; tq_m => q_3
638	IF ( humidity ) THEN
639	vpt => vpt_1
640	IF ( cloud_physics ) THEN
641	ql => ql_1
642	IF ( icloud_scheme == 0 ) THEN
643	qc => qc_1
644	IF ( precipitation ) THEN
645	qr => qr_1; qr_p => qr_2; tqr_m => qr_3
646	nr => nr_1; nr_p => nr_2; tnr_m => nr_3
647	ENDIF
648	ENDIF
649	ENDIF
650	ENDIF
651	IF ( cloud_droplets ) THEN
652	ql => ql_1
653	ql_c => ql_2
654	ENDIF
655	ENDIF
656
657	IF ( ocean ) THEN
658	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
659	ENDIF
660	#endif
661
662	!
663	!-- Allocate land surface model arrays
664	IF ( land_surface ) THEN
665	CALL init_lsm_arrays
666	ENDIF
667
668	!
669	!-- Allocate arrays containing the RK coefficient for calculation of
670	!-- perturbation pressure and turbulent fluxes. At this point values are
671	!-- set for pressure calculation during initialization (where no timestep
672	!-- is done). Further below the values needed within the timestep scheme
673	!-- will be set.
674	!-- TO_DO: zeroth element added to weight_pres because in case of nesting
675	!-- pres may need to be called outside the RK-substeps. Antti will
676	!-- check if this is really required.
677	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
678	weight_pres(0:intermediate_timestep_count_max) )
679	weight_substep = 1.0_wp
680	weight_pres = 1.0_wp
681	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
682
683	CALL location_message( 'finished', .TRUE. )
684	!
685	!-- Initialize model variables
686	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
687	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
688	!
689	!-- First model run of a possible job queue.
690	!-- Initial profiles of the variables must be computes.
691	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
692
693	CALL location_message( 'initializing with 1D model profiles', .FALSE. )
694	!
695	!-- Use solutions of the 1D model as initial profiles,
696	!-- start 1D model
697	CALL init_1d_model
698	!
699	!-- Transfer initial profiles to the arrays of the 3D model
700	DO i = nxlg, nxrg
701	DO j = nysg, nyng
702	e(:,j,i) = e1d
703	kh(:,j,i) = kh1d
704	km(:,j,i) = km1d
705	pt(:,j,i) = pt_init
706	u(:,j,i) = u1d
707	v(:,j,i) = v1d
708	ENDDO
709	ENDDO
710
711	IF ( humidity .OR. passive_scalar ) THEN
712	DO i = nxlg, nxrg
713	DO j = nysg, nyng
714	q(:,j,i) = q_init
715	ENDDO
716	ENDDO
717	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
718	precipitation ) THEN
719	DO i = nxlg, nxrg
720	DO j = nysg, nyng
721	qr(:,j,i) = 0.0_wp
722	nr(:,j,i) = 0.0_wp
723	ENDDO
724	ENDDO
725	!
726	!-- Initialze nc_1d with default value
727	nc_1d(:) = nc_const
728
729	ENDIF
730	ENDIF
731
732	IF ( .NOT. constant_diffusion ) THEN
733	DO i = nxlg, nxrg
734	DO j = nysg, nyng
735	e(:,j,i) = e1d
736	ENDDO
737	ENDDO
738	!
739	!-- Store initial profiles for output purposes etc.
740	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
741
742	IF ( constant_flux_layer ) THEN
743	ol = ( zu(nzb+1) - zw(nzb) ) / ( rif1d(nzb+1) + 1.0E-20_wp )
744	ts = 0.0_wp ! could actually be computed more accurately in the
745	! 1D model. Update when opportunity arises.
746	us = us1d
747	usws = usws1d
748	vsws = vsws1d
749	ELSE
750	ts = 0.0_wp ! must be set, because used in
751	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
752	us = 0.0_wp
753	usws = 0.0_wp
754	vsws = 0.0_wp
755	ENDIF
756
757	ELSE
758	e = 0.0_wp ! must be set, because used in
759	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min ! flowste
760	ts = 0.0_wp
761	us = 0.0_wp
762	usws = 0.0_wp
763	vsws = 0.0_wp
764	ENDIF
765	uswst = top_momentumflux_u
766	vswst = top_momentumflux_v
767
768	!
769	!-- In every case qs = 0.0 (see also pt)
770	!-- This could actually be computed more accurately in the 1D model.
771	!-- Update when opportunity arises!
772	IF ( humidity .OR. passive_scalar ) THEN
773	qs = 0.0_wp
774	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
775	precipitation ) THEN
776	qrs = 0.0_wp
777	nrs = 0.0_wp
778	ENDIF
779	ENDIF
780
781	!
782	!-- Inside buildings set velocities back to zero
783	IF ( topography /= 'flat' ) THEN
784	DO i = nxlg, nxrg
785	DO j = nysg, nyng
786	u(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
787	v(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
788	ENDDO
789	ENDDO
790
791	!
792	!-- WARNING: The extra boundary conditions set after running the
793	!-- ------- 1D model impose an error on the divergence one layer
794	!-- below the topography; need to correct later
795	!-- ATTENTION: Provisional correction for Piacsek & Williams
796	!-- --------- advection scheme: keep u and v zero one layer below
797	!-- the topography.
798	IF ( ibc_uv_b == 1 ) THEN
799	!
800	!-- Neumann condition
801	DO i = nxl-1, nxr+1
802	DO j = nys-1, nyn+1
803	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
804	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
805	ENDDO
806	ENDDO
807
808	ENDIF
809
810	ENDIF
811
812	CALL location_message( 'finished', .TRUE. )
813
814	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
815	THEN
816
817	CALL location_message( 'initializing with constant profiles', .FALSE. )
818	!
819	!-- Overwrite initial profiles in case of nudging
820	IF ( nudging ) THEN
821	pt_init = ptnudge(:,1)
822	u_init = unudge(:,1)
823	v_init = vnudge(:,1)
824	IF ( humidity .OR. passive_scalar ) THEN
825	q_init = qnudge(:,1)
826	ENDIF
827
828	WRITE( message_string, * ) 'Initial profiles of u, v and ', &
829	'scalars from NUDGING_DATA are used.'
830	CALL message( 'init_3d_model', 'PA0370', 0, 0, 0, 6, 0 )
831	ENDIF
832
833	!
834	!-- Use constructed initial profiles (velocity constant with height,
835	!-- temperature profile with constant gradient)
836	DO i = nxlg, nxrg
837	DO j = nysg, nyng
838	pt(:,j,i) = pt_init
839	u(:,j,i) = u_init
840	v(:,j,i) = v_init
841	ENDDO
842	ENDDO
843
844	!
845	!-- Set initial horizontal velocities at the lowest computational grid
846	!-- levels to zero in order to avoid too small time steps caused by the
847	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
848	!-- in the limiting formula!). The original values are stored to be later
849	!-- used for volume flow control.
850	! TO_DO: Antti will check if this is really required
851	!AH IF ( ibc_uv_b /= 1 ) THEN
852	!AH DO i = nxlg, nxrg
853	!AH DO j = nysg, nyng
854	!AH u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0_wp
855	!AH v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0_wp
856	!AH ENDDO
857	!AH ENDDO
858	!AH ENDIF
859
860	IF ( humidity .OR. passive_scalar ) THEN
861	DO i = nxlg, nxrg
862	DO j = nysg, nyng
863	q(:,j,i) = q_init
864	ENDDO
865	ENDDO
866	IF ( cloud_physics .AND. icloud_scheme == 0 ) THEN
867	!
868	!-- Initialze nc_1d with default value
869	nc_1d(:) = nc_const
870
871	IF ( precipitation ) THEN
872	DO i = nxlg, nxrg
873	DO j = nysg, nyng
874	qr(:,j,i) = 0.0_wp
875	nr(:,j,i) = 0.0_wp
876	ENDDO
877	ENDDO
878	ENDIF
879
880	ENDIF
881	ENDIF
882
883	IF ( ocean ) THEN
884	DO i = nxlg, nxrg
885	DO j = nysg, nyng
886	sa(:,j,i) = sa_init
887	ENDDO
888	ENDDO
889	ENDIF
890
891	IF ( constant_diffusion ) THEN
892	km = km_constant
893	kh = km / prandtl_number
894	e = 0.0_wp
895	ELSEIF ( e_init > 0.0_wp ) THEN
896	DO k = nzb+1, nzt
897	km(k,:,:) = 0.1_wp * l_grid(k) * SQRT( e_init )
898	ENDDO
899	km(nzb,:,:) = km(nzb+1,:,:)
900	km(nzt+1,:,:) = km(nzt,:,:)
901	kh = km / prandtl_number
902	e = e_init
903	ELSE
904	IF ( .NOT. ocean ) THEN
905	kh = 0.01_wp ! there must exist an initial diffusion, because
906	km = 0.01_wp ! otherwise no TKE would be produced by the
907	! production terms, as long as not yet
908	! e = (u/cm)*2 at k=nzb+1
909	ELSE
910	kh = 0.00001_wp
911	km = 0.00001_wp
912	ENDIF
913	e = 0.0_wp
914	ENDIF
915	ol = ( zu(nzb+1) - zw(nzb) ) / zeta_min
916	ts = 0.0_wp
917	us = 0.0_wp
918	usws = 0.0_wp
919	uswst = top_momentumflux_u
920	vsws = 0.0_wp
921	vswst = top_momentumflux_v
922	IF ( humidity .OR. passive_scalar ) qs = 0.0_wp
923
924	!
925	!-- Compute initial temperature field and other constants used in case
926	!-- of a sloping surface
927	IF ( sloping_surface ) CALL init_slope
928
929	CALL location_message( 'finished', .TRUE. )
930
931	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
932	THEN
933
934	CALL location_message( 'initializing by user', .FALSE. )
935	!
936	!-- Initialization will completely be done by the user
937	CALL user_init_3d_model
938
939	CALL location_message( 'finished', .TRUE. )
940
941	ENDIF
942
943	CALL location_message( 'initializing statistics, boundary conditions, etc.', &
944	.FALSE. )
945
946	!
947	!-- Bottom boundary
948	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
949	u(nzb,:,:) = 0.0_wp
950	v(nzb,:,:) = 0.0_wp
951	ENDIF
952
953	!
954	!-- Apply channel flow boundary condition
955	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
956	u(nzt+1,:,:) = 0.0_wp
957	v(nzt+1,:,:) = 0.0_wp
958	ENDIF
959
960	!
961	!-- Calculate virtual potential temperature
962	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
963
964	!
965	!-- Store initial profiles for output purposes etc.
966	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
967	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
968	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
969	hom(nzb,1,5,:) = 0.0_wp
970	hom(nzb,1,6,:) = 0.0_wp
971	ENDIF
972	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
973	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
974	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
975
976	IF ( ocean ) THEN
977	!
978	!-- Store initial salinity profile
979	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
980	ENDIF
981
982	IF ( humidity ) THEN
983	!
984	!-- Store initial profile of total water content, virtual potential
985	!-- temperature
986	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
987	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
988	IF ( cloud_physics .OR. cloud_droplets ) THEN
989	!
990	!-- Store initial profile of specific humidity and potential
991	!-- temperature
992	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
993	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
994	ENDIF
995	ENDIF
996
997	IF ( passive_scalar ) THEN
998	!
999	!-- Store initial scalar profile
1000	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
1001	ENDIF
1002
1003	!
1004	!-- Initialize the random number generators (from numerical recipes)
1005	CALL random_function_ini
1006
1007	IF ( random_generator == 'random-parallel' ) THEN
1008	!-- Asigning an ID to every vertical gridpoint column
1009	!-- dependig on the ensemble run number.
1010	random_dummy=1
1011	DO j=0,ny
1012	DO i=0,nx
1013	id_random_array(j,i) = random_dummy + 1E6 * ( ensemble_member_nr - 1000 )
1014	random_dummy = random_dummy + 1
1015	END DO
1016	ENDDO
1017	!-- Initializing with random_seed_parallel for every vertical
1018	!-- gridpoint column.
1019	random_dummy=0
1020	DO j = nysg, nyng
1021	DO i = nxlg, nxrg
1022	CALL random_seed_parallel (random_sequence=id_random_array(j, i))
1023	CALL random_number_parallel (random_dummy)
1024	CALL random_seed_parallel (get=seq_random_array(:, j, i))
1025	END DO
1026	ENDDO
1027	ENDIF
1028
1029	!
1030	!-- Initialize fluxes at bottom surface
1031	IF ( use_surface_fluxes ) THEN
1032
1033	IF ( constant_heatflux ) THEN
1034	!
1035	!-- Heat flux is prescribed
1036	IF ( random_heatflux ) THEN
1037	CALL disturb_heatflux
1038	ELSE
1039	shf = surface_heatflux
1040	!
1041	!-- Initialize shf with data from external file LSF_DATA
1042	IF ( large_scale_forcing .AND. lsf_surf ) THEN
1043	CALL ls_forcing_surf ( simulated_time )
1044	ENDIF
1045
1046	!
1047	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
1048	IF ( TRIM( topography ) /= 'flat' ) THEN
1049	DO i = nxlg, nxrg
1050	DO j = nysg, nyng
1051	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1052	shf(j,i) = wall_heatflux(0)
1053	ENDIF
1054	ENDDO
1055	ENDDO
1056	ENDIF
1057	ENDIF
1058	ENDIF
1059
1060	!
1061	!-- Determine the near-surface water flux
1062	IF ( humidity .OR. passive_scalar ) THEN
1063	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1064	precipitation ) THEN
1065	qrsws = 0.0_wp
1066	nrsws = 0.0_wp
1067	ENDIF
1068	IF ( constant_waterflux ) THEN
1069	qsws = surface_waterflux
1070	!
1071	!-- Over topography surface_waterflux is replaced by
1072	!-- wall_humidityflux(0)
1073	IF ( TRIM( topography ) /= 'flat' ) THEN
1074	wall_qflux = wall_humidityflux
1075	DO i = nxlg, nxrg
1076	DO j = nysg, nyng
1077	IF ( nzb_s_inner(j,i) /= 0 ) THEN
1078	qsws(j,i) = wall_qflux(0)
1079	ENDIF
1080	ENDDO
1081	ENDDO
1082	ENDIF
1083	ENDIF
1084	ENDIF
1085
1086	ENDIF
1087
1088	!
1089	!-- Initialize fluxes at top surface
1090	!-- Currently, only the heatflux and salinity flux can be prescribed.
1091	!-- The latent flux is zero in this case!
1092	IF ( use_top_fluxes ) THEN
1093
1094	IF ( constant_top_heatflux ) THEN
1095	!
1096	!-- Heat flux is prescribed
1097	tswst = top_heatflux
1098
1099	IF ( humidity .OR. passive_scalar ) THEN
1100	qswst = 0.0_wp
1101	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1102	precipitation ) THEN
1103	nrswst = 0.0_wp
1104	qrswst = 0.0_wp
1105	ENDIF
1106	ENDIF
1107
1108	IF ( ocean ) THEN
1109	saswsb = bottom_salinityflux
1110	saswst = top_salinityflux
1111	ENDIF
1112	ENDIF
1113
1114	!
1115	!-- Initialization in case of a coupled model run
1116	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
1117	tswst = 0.0_wp
1118	ENDIF
1119
1120	ENDIF
1121
1122	!
1123	!-- Initialize Prandtl layer quantities
1124	IF ( constant_flux_layer ) THEN
1125
1126	z0 = roughness_length
1127	z0h = z0h_factor * z0
1128
1129	IF ( .NOT. constant_heatflux ) THEN
1130	!
1131	!-- Surface temperature is prescribed. Here the heat flux cannot be
1132	!-- simply estimated, because therefore ol, u* and theta* would have
1133	!-- to be computed by iteration. This is why the heat flux is assumed
1134	!-- to be zero before the first time step. It approaches its correct
1135	!-- value in the course of the first few time steps.
1136	shf = 0.0_wp
1137	ENDIF
1138
1139	IF ( humidity .OR. passive_scalar ) THEN
1140	IF ( .NOT. constant_waterflux ) qsws = 0.0_wp
1141	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1142	precipitation ) THEN
1143	qrsws = 0.0_wp
1144	nrsws = 0.0_wp
1145	ENDIF
1146	ENDIF
1147
1148	ENDIF
1149
1150	!
1151	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
1152	!-- the reference state will be set (overwritten) in init_ocean)
1153	IF ( use_single_reference_value ) THEN
1154	IF ( .NOT. humidity ) THEN
1155	ref_state(:) = pt_reference
1156	ELSE
1157	ref_state(:) = vpt_reference
1158	ENDIF
1159	ELSE
1160	IF ( .NOT. humidity ) THEN
1161	ref_state(:) = pt_init(:)
1162	ELSE
1163	ref_state(:) = vpt(:,nys,nxl)
1164	ENDIF
1165	ENDIF
1166
1167	!
1168	!-- For the moment, vertical velocity is zero
1169	w = 0.0_wp
1170
1171	!
1172	!-- Initialize array sums (must be defined in first call of pres)
1173	sums = 0.0_wp
1174
1175	!
1176	!-- In case of iterative solvers, p must get an initial value
1177	IF ( psolver(1:9) == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
1178
1179	!
1180	!-- Treating cloud physics, liquid water content and precipitation amount
1181	!-- are zero at beginning of the simulation
1182	IF ( cloud_physics ) THEN
1183	ql = 0.0_wp
1184	IF ( precipitation ) precipitation_amount = 0.0_wp
1185	IF ( icloud_scheme == 0 ) THEN
1186	qc = 0.0_wp
1187	nc_1d = nc_const
1188	ENDIF
1189	ENDIF
1190	!
1191	!-- Impose vortex with vertical axis on the initial velocity profile
1192	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
1193	CALL init_rankine
1194	ENDIF
1195
1196	!
1197	!-- Impose temperature anomaly (advection test only)
1198	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
1199	CALL init_pt_anomaly
1200	ENDIF
1201
1202	!
1203	!-- If required, change the surface temperature at the start of the 3D run
1204	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
1205	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
1206	ENDIF
1207
1208	!
1209	!-- If required, change the surface humidity/scalar at the start of the 3D
1210	!-- run
1211	IF ( ( humidity .OR. passive_scalar ) .AND. &
1212	q_surface_initial_change /= 0.0_wp ) THEN
1213	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
1214	ENDIF
1215
1216	!
1217	!-- Initialize old and new time levels.
1218	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
1219	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1220
1221	IF ( humidity .OR. passive_scalar ) THEN
1222	tq_m = 0.0_wp
1223	q_p = q
1224	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1225	precipitation ) THEN
1226	tqr_m = 0.0_wp
1227	qr_p = qr
1228	tnr_m = 0.0_wp
1229	nr_p = nr
1230	ENDIF
1231	ENDIF
1232
1233	IF ( ocean ) THEN
1234	tsa_m = 0.0_wp
1235	sa_p = sa
1236	ENDIF
1237
1238	CALL location_message( 'finished', .TRUE. )
1239
1240	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
1241	TRIM( initializing_actions ) == 'cyclic_fill' ) &
1242	THEN
1243
1244	CALL location_message( 'initializing in case of restart / cyclic_fill', &
1245	.FALSE. )
1246	!
1247	!-- When reading data for cyclic fill of 3D prerun data files, read
1248	!-- some of the global variables from the restart file which are required
1249	!-- for initializing the inflow
1250	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1251
1252	DO i = 0, io_blocks-1
1253	IF ( i == io_group ) THEN
1254	CALL read_parts_of_var_list
1255	CALL close_file( 13 )
1256	ENDIF
1257	#if defined( __parallel )
1258	CALL MPI_BARRIER( comm2d, ierr )
1259	#endif
1260	ENDDO
1261
1262	ENDIF
1263
1264	!
1265	!-- Read binary data from restart file
1266	DO i = 0, io_blocks-1
1267	IF ( i == io_group ) THEN
1268	CALL read_3d_binary
1269	ENDIF
1270	#if defined( __parallel )
1271	CALL MPI_BARRIER( comm2d, ierr )
1272	#endif
1273	ENDDO
1274
1275	!
1276	!-- Initialization of the turbulence recycling method
1277	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1278	turbulent_inflow ) THEN
1279	!
1280	!-- First store the profiles to be used at the inflow.
1281	!-- These profiles are the (temporally) and horizontally averaged vertical
1282	!-- profiles from the prerun. Alternatively, prescribed profiles
1283	!-- for u,v-components can be used.
1284	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,6) )
1285
1286	IF ( use_prescribed_profile_data ) THEN
1287	mean_inflow_profiles(:,1) = u_init ! u
1288	mean_inflow_profiles(:,2) = v_init ! v
1289	ELSE
1290	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1291	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1292	ENDIF
1293	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1294	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1295	mean_inflow_profiles(:,6) = hom_sum(:,41,0) ! q
1296
1297	!
1298	!-- If necessary, adjust the horizontal flow field to the prescribed
1299	!-- profiles
1300	IF ( use_prescribed_profile_data ) THEN
1301	DO i = nxlg, nxrg
1302	DO j = nysg, nyng
1303	DO k = nzb, nzt+1
1304	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1305	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1306	ENDDO
1307	ENDDO
1308	ENDDO
1309	ENDIF
1310
1311	!
1312	!-- Use these mean profiles at the inflow (provided that Dirichlet
1313	!-- conditions are used)
1314	IF ( inflow_l ) THEN
1315	DO j = nysg, nyng
1316	DO k = nzb, nzt+1
1317	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1318	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1319	w(k,j,nxlg:-1) = 0.0_wp
1320	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1321	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1322	IF ( humidity .OR. passive_scalar ) &
1323	q(k,j,nxlg:-1) = mean_inflow_profiles(k,6)
1324	ENDDO
1325	ENDDO
1326	ENDIF
1327
1328	!
1329	!-- Calculate the damping factors to be used at the inflow. For a
1330	!-- turbulent inflow the turbulent fluctuations have to be limited
1331	!-- vertically because otherwise the turbulent inflow layer will grow
1332	!-- in time.
1333	IF ( inflow_damping_height == 9999999.9_wp ) THEN
1334	!
1335	!-- Default: use the inversion height calculated by the prerun; if
1336	!-- this is zero, inflow_damping_height must be explicitly
1337	!-- specified.
1338	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
1339	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1340	ELSE
1341	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1342	'explicitly specified because&the inversion height ', &
1343	'calculated by the prerun is zero.'
1344	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1345	ENDIF
1346
1347	ENDIF
1348
1349	IF ( inflow_damping_width == 9999999.9_wp ) THEN
1350	!
1351	!-- Default for the transition range: one tenth of the undamped
1352	!-- layer
1353	inflow_damping_width = 0.1_wp * inflow_damping_height
1354
1355	ENDIF
1356
1357	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1358
1359	DO k = nzb, nzt+1
1360
1361	IF ( zu(k) <= inflow_damping_height ) THEN
1362	inflow_damping_factor(k) = 1.0_wp
1363	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
1364	inflow_damping_factor(k) = 1.0_wp - &
1365	( zu(k) - inflow_damping_height ) / &
1366	inflow_damping_width
1367	ELSE
1368	inflow_damping_factor(k) = 0.0_wp
1369	ENDIF
1370
1371	ENDDO
1372
1373	ENDIF
1374
1375	!
1376	!-- Inside buildings set velocities and TKE back to zero
1377	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1378	topography /= 'flat' ) THEN
1379	!
1380	!-- Inside buildings set velocities and TKE back to zero.
1381	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1382	!-- maybe revise later.
1383	DO i = nxlg, nxrg
1384	DO j = nysg, nyng
1385	u (nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1386	v (nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1387	w (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1388	e (nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1389	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0_wp
1390	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0_wp
1391	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1392	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1393	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0_wp
1394	ENDDO
1395	ENDDO
1396
1397	ENDIF
1398
1399	!
1400	!-- Calculate initial temperature field and other constants used in case
1401	!-- of a sloping surface
1402	IF ( sloping_surface ) CALL init_slope
1403
1404	!
1405	!-- Initialize new time levels (only done in order to set boundary values
1406	!-- including ghost points)
1407	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1408	IF ( humidity .OR. passive_scalar ) THEN
1409	q_p = q
1410	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1411	precipitation ) THEN
1412	qr_p = qr
1413	nr_p = nr
1414	ENDIF
1415	ENDIF
1416	IF ( ocean ) sa_p = sa
1417
1418	!
1419	!-- Allthough tendency arrays are set in prognostic_equations, they have
1420	!-- have to be predefined here because they are used (but multiplied with 0)
1421	!-- there before they are set.
1422	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
1423	IF ( humidity .OR. passive_scalar ) THEN
1424	tq_m = 0.0_wp
1425	IF ( cloud_physics .AND. icloud_scheme == 0 .AND. &
1426	precipitation ) THEN
1427	tqr_m = 0.0_wp
1428	tnr_m = 0.0_wp
1429	ENDIF
1430	ENDIF
1431	IF ( ocean ) tsa_m = 0.0_wp
1432
1433	CALL location_message( 'finished', .TRUE. )
1434
1435	ELSE
1436	!
1437	!-- Actually this part of the programm should not be reached
1438	message_string = 'unknown initializing problem'
1439	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1440	ENDIF
1441
1442
1443	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1444	!
1445	!-- Initialize old timelevels needed for radiation boundary conditions
1446	IF ( outflow_l ) THEN
1447	u_m_l(:,:,:) = u(:,:,1:2)
1448	v_m_l(:,:,:) = v(:,:,0:1)
1449	w_m_l(:,:,:) = w(:,:,0:1)
1450	ENDIF
1451	IF ( outflow_r ) THEN
1452	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1453	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1454	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1455	ENDIF
1456	IF ( outflow_s ) THEN
1457	u_m_s(:,:,:) = u(:,0:1,:)
1458	v_m_s(:,:,:) = v(:,1:2,:)
1459	w_m_s(:,:,:) = w(:,0:1,:)
1460	ENDIF
1461	IF ( outflow_n ) THEN
1462	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1463	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1464	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1465	ENDIF
1466
1467	ENDIF
1468
1469	!
1470	!-- Calculate the initial volume flow at the right and north boundary
1471	IF ( conserve_volume_flow ) THEN
1472
1473	IF ( use_prescribed_profile_data ) THEN
1474
1475	volume_flow_initial_l = 0.0_wp
1476	volume_flow_area_l = 0.0_wp
1477
1478	IF ( nxr == nx ) THEN
1479	DO j = nys, nyn
1480	DO k = nzb_2d(j,nx)+1, nzt
1481	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1482	u_init(k) * dzw(k)
1483	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1484	ENDDO
1485	ENDDO
1486	ENDIF
1487
1488	IF ( nyn == ny ) THEN
1489	DO i = nxl, nxr
1490	DO k = nzb_2d(ny,i)+1, nzt
1491	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1492	v_init(k) * dzw(k)
1493	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1494	ENDDO
1495	ENDDO
1496	ENDIF
1497
1498	#if defined( __parallel )
1499	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1500	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1501	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1502	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1503
1504	#else
1505	volume_flow_initial = volume_flow_initial_l
1506	volume_flow_area = volume_flow_area_l
1507	#endif
1508
1509	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1510
1511	volume_flow_initial_l = 0.0_wp
1512	volume_flow_area_l = 0.0_wp
1513
1514	IF ( nxr == nx ) THEN
1515	DO j = nys, nyn
1516	DO k = nzb_2d(j,nx)+1, nzt
1517	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1518	hom_sum(k,1,0) * dzw(k)
1519	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1520	ENDDO
1521	ENDDO
1522	ENDIF
1523
1524	IF ( nyn == ny ) THEN
1525	DO i = nxl, nxr
1526	DO k = nzb_2d(ny,i)+1, nzt
1527	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1528	hom_sum(k,2,0) * dzw(k)
1529	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1530	ENDDO
1531	ENDDO
1532	ENDIF
1533
1534	#if defined( __parallel )
1535	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1536	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1537	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1538	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1539
1540	#else
1541	volume_flow_initial = volume_flow_initial_l
1542	volume_flow_area = volume_flow_area_l
1543	#endif
1544
1545	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1546
1547	volume_flow_initial_l = 0.0_wp
1548	volume_flow_area_l = 0.0_wp
1549
1550	IF ( nxr == nx ) THEN
1551	DO j = nys, nyn
1552	DO k = nzb_2d(j,nx)+1, nzt
1553	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1554	u(k,j,nx) * dzw(k)
1555	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1556	ENDDO
1557	ENDDO
1558	ENDIF
1559
1560	IF ( nyn == ny ) THEN
1561	DO i = nxl, nxr
1562	DO k = nzb_2d(ny,i)+1, nzt
1563	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1564	v(k,ny,i) * dzw(k)
1565	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1566	ENDDO
1567	ENDDO
1568	ENDIF
1569
1570	#if defined( __parallel )
1571	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1572	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1573	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1574	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1575
1576	#else
1577	volume_flow_initial = volume_flow_initial_l
1578	volume_flow_area = volume_flow_area_l
1579	#endif
1580
1581	ENDIF
1582
1583	!
1584	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1585	!-- from u\|v_bulk instead
1586	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1587	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1588	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1589	ENDIF
1590
1591	ENDIF
1592
1593	!
1594	!-- Initialize quantities for special advections schemes
1595	CALL init_advec
1596
1597	!
1598	!-- Impose random perturbation on the horizontal velocity field and then
1599	!-- remove the divergences from the velocity field at the initial stage
1600	IF ( create_disturbances .AND. disturbance_energy_limit /= 0.0_wp .AND.&
1601	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1602	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1603
1604	CALL location_message( 'creating initial disturbances', .FALSE. )
1605	CALL disturb_field( nzb_u_inner, tend, u )
1606	CALL disturb_field( nzb_v_inner, tend, v )
1607	CALL location_message( 'finished', .TRUE. )
1608
1609	CALL location_message( 'calling pressure solver', .FALSE. )
1610	n_sor = nsor_ini
1611	!$acc data copyin( d, ddzu, ddzw, nzb_s_inner, nzb_u_inner ) &
1612	!$acc copyin( nzb_v_inner, nzb_w_inner, p, rflags_s_inner, tend ) &
1613	!$acc copyin( weight_pres, weight_substep ) &
1614	!$acc copy( tri, tric, u, v, w )
1615	CALL pres
1616	!$acc end data
1617	n_sor = nsor
1618	CALL location_message( 'finished', .TRUE. )
1619
1620	ENDIF
1621
1622	!
1623	!-- If required, initialize quantities needed for the plant canopy model
1624	IF ( plant_canopy ) CALL init_plant_canopy
1625
1626	!
1627	!-- If required, initialize dvrp-software
1628	IF ( dt_dvrp /= 9999999.9_wp ) CALL init_dvrp
1629
1630	IF ( ocean ) THEN
1631	!
1632	!-- Initialize quantities needed for the ocean model
1633	CALL init_ocean
1634
1635	ELSE
1636	!
1637	!-- Initialize quantities for handling cloud physics
1638	!-- This routine must be called before lpm_init, because
1639	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1640	!-- lpm_init) is not defined.
1641	CALL init_cloud_physics
1642	ENDIF
1643
1644	!
1645	!-- If required, initialize particles
1646	IF ( particle_advection ) CALL lpm_init
1647
1648	!
1649	!-- If required, initialize quantities needed for the LSM
1650	IF ( land_surface ) THEN
1651	CALL location_message( 'initializing land surface model', .FALSE. )
1652	CALL init_lsm
1653	CALL location_message( 'finished', .TRUE. )
1654	ENDIF
1655
1656	!
1657	!-- Initialize surface layer (done after LSM as roughness length are required
1658	!-- for initialization
1659	IF ( constant_flux_layer ) THEN
1660	CALL location_message( 'initializing surface layer', .FALSE. )
1661	CALL init_surface_layer_fluxes
1662	CALL location_message( 'finished', .TRUE. )
1663	ENDIF
1664
1665	!
1666	!-- If required, initialize radiation model
1667	IF ( radiation ) THEN
1668	CALL location_message( 'initializing radiation model', .FALSE. )
1669	CALL init_radiation
1670	CALL location_message( 'finished', .TRUE. )
1671	ENDIF
1672
1673	!
1674	!-- Initialize the ws-scheme.
1675	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1676
1677	!
1678	!-- Setting weighting factors for calculation of perturbation pressure
1679	!-- and turbulent quantities from the RK substeps
1680	!-- TO_DO: zeroth element is added to weight_pres because in nesting pres
1681	!-- may need to be called outside the RK-substeps
1682	weight_pres(0) = 1.0_wp
1683	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1684
1685	weight_substep(1) = 1._wp/6._wp
1686	weight_substep(2) = 3._wp/10._wp
1687	weight_substep(3) = 8._wp/15._wp
1688
1689	weight_pres(1) = 1._wp/3._wp
1690	weight_pres(2) = 5._wp/12._wp
1691	weight_pres(3) = 1._wp/4._wp
1692
1693	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1694
1695	weight_substep(1) = 1._wp/2._wp
1696	weight_substep(2) = 1._wp/2._wp
1697
1698	weight_pres(1) = 1._wp/2._wp
1699	weight_pres(2) = 1._wp/2._wp
1700
1701	ELSE ! for Euler-method
1702
1703	weight_substep(1) = 1.0_wp
1704	weight_pres(1) = 1.0_wp
1705
1706	ENDIF
1707
1708	!
1709	!-- Initialize Rayleigh damping factors
1710	rdf = 0.0_wp
1711	rdf_sc = 0.0_wp
1712	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
1713	IF ( .NOT. ocean ) THEN
1714	DO k = nzb+1, nzt
1715	IF ( zu(k) >= rayleigh_damping_height ) THEN
1716	rdf(k) = rayleigh_damping_factor * &
1717	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
1718	/ ( zu(nzt) - rayleigh_damping_height ) )&
1719	)**2
1720	ENDIF
1721	ENDDO
1722	ELSE
1723	DO k = nzt, nzb+1, -1
1724	IF ( zu(k) <= rayleigh_damping_height ) THEN
1725	rdf(k) = rayleigh_damping_factor * &
1726	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
1727	/ ( rayleigh_damping_height - zu(nzb+1)))&
1728	)**2
1729	ENDIF
1730	ENDDO
1731	ENDIF
1732	ENDIF
1733	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1734
1735	!
1736	!-- Initialize the starting level and the vertical smoothing factor used for
1737	!-- the external pressure gradient
1738	dp_smooth_factor = 1.0_wp
1739	IF ( dp_external ) THEN
1740	!
1741	!-- Set the starting level dp_level_ind_b only if it has not been set before
1742	!-- (e.g. in init_grid).
1743	IF ( dp_level_ind_b == 0 ) THEN
1744	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1745	dp_level_ind_b = ind_array(1) - 1 + nzb
1746	! MINLOC uses lower array bound 1
1747	ENDIF
1748	IF ( dp_smooth ) THEN
1749	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
1750	DO k = dp_level_ind_b+1, nzt
1751	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
1752	( REAL( k - dp_level_ind_b, KIND=wp ) / &
1753	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
1754	ENDDO
1755	ENDIF
1756	ENDIF
1757
1758	!
1759	!-- Initialize damping zone for the potential temperature in case of
1760	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1761	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1762	ptdf_x = 0.0_wp
1763	ptdf_y = 0.0_wp
1764	IF ( bc_lr_dirrad ) THEN
1765	DO i = nxl, nxr
1766	IF ( ( i * dx ) < pt_damping_width ) THEN
1767	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
1768	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
1769	REAL( pt_damping_width, KIND=wp ) ) ) )**2
1770	ENDIF
1771	ENDDO
1772	ELSEIF ( bc_lr_raddir ) THEN
1773	DO i = nxl, nxr
1774	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1775	ptdf_x(i) = pt_damping_factor * &
1776	SIN( pi * 0.5_wp * &
1777	( ( i - nx ) * dx + pt_damping_width ) / &
1778	REAL( pt_damping_width, KIND=wp ) )**2
1779	ENDIF
1780	ENDDO
1781	ELSEIF ( bc_ns_dirrad ) THEN
1782	DO j = nys, nyn
1783	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1784	ptdf_y(j) = pt_damping_factor * &
1785	SIN( pi * 0.5_wp * &
1786	( ( j - ny ) * dy + pt_damping_width ) / &
1787	REAL( pt_damping_width, KIND=wp ) )**2
1788	ENDIF
1789	ENDDO
1790	ELSEIF ( bc_ns_raddir ) THEN
1791	DO j = nys, nyn
1792	IF ( ( j * dy ) < pt_damping_width ) THEN
1793	ptdf_y(j) = pt_damping_factor * &
1794	SIN( pi * 0.5_wp * &
1795	( pt_damping_width - j * dy ) / &
1796	REAL( pt_damping_width, KIND=wp ) )**2
1797	ENDIF
1798	ENDDO
1799	ENDIF
1800
1801	!
1802	!-- Initialize local summation arrays for routine flow_statistics.
1803	!-- This is necessary because they may not yet have been initialized when they
1804	!-- are called from flow_statistics (or - depending on the chosen model run -
1805	!-- are never initialized)
1806	sums_divnew_l = 0.0_wp
1807	sums_divold_l = 0.0_wp
1808	sums_l_l = 0.0_wp
1809	sums_up_fraction_l = 0.0_wp
1810	sums_wsts_bc_l = 0.0_wp
1811
1812	!
1813	!-- Pre-set masks for regional statistics. Default is the total model domain.
1814	!-- Ghost points are excluded because counting values at the ghost boundaries
1815	!-- would bias the statistics
1816	rmask = 1.0_wp
1817	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
1818	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
1819
1820	!
1821	!-- User-defined initializing actions. Check afterwards, if maximum number
1822	!-- of allowed timeseries is exceeded
1823	CALL user_init
1824
1825	IF ( dots_num > dots_max ) THEN
1826	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1827	' its maximum of dots_max = ', dots_max, &
1828	' &Please increase dots_max in modules.f90.'
1829	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1830	ENDIF
1831
1832	!
1833	!-- Input binary data file is not needed anymore. This line must be placed
1834	!-- after call of user_init!
1835	CALL close_file( 13 )
1836
1837	!
1838	!-- Compute total sum of active mask grid points
1839	!-- and the mean surface level height for each statistic region
1840	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1841	!-- total domain
1842	!-- ngp_3d: number of grid points of the total domain
1843	ngp_2dh_outer_l = 0
1844	ngp_2dh_outer = 0
1845	ngp_2dh_s_inner_l = 0
1846	ngp_2dh_s_inner = 0
1847	ngp_2dh_l = 0
1848	ngp_2dh = 0
1849	ngp_3d_inner_l = 0.0_wp
1850	ngp_3d_inner = 0
1851	ngp_3d = 0
1852	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1853
1854	mean_surface_level_height = 0.0_wp
1855	mean_surface_level_height_l = 0.0_wp
1856
1857	DO sr = 0, statistic_regions
1858	DO i = nxl, nxr
1859	DO j = nys, nyn
1860	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
1861	!
1862	!-- All xy-grid points
1863	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1864	mean_surface_level_height_l(sr) = mean_surface_level_height_l(sr) + &
1865	zw(nzb_s_inner(j,i))
1866	!
1867	!-- xy-grid points above topography
1868	DO k = nzb_s_outer(j,i), nz + 1
1869	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1870	ENDDO
1871	DO k = nzb_s_inner(j,i), nz + 1
1872	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1873	ENDDO
1874	!
1875	!-- All grid points of the total domain above topography
1876	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1877	( nz - nzb_s_inner(j,i) + 2 )
1878	ENDIF
1879	ENDDO
1880	ENDDO
1881	ENDDO
1882
1883	sr = statistic_regions + 1
1884	#if defined( __parallel )
1885	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1886	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1887	comm2d, ierr )
1888	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1889	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1890	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1891	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1892	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1893	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1894	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1895	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1896	MPI_SUM, comm2d, ierr )
1897	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1898	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1899	CALL MPI_ALLREDUCE( mean_surface_level_height_l(0), &
1900	mean_surface_level_height(0), sr, MPI_REAL, &
1901	MPI_SUM, comm2d, ierr )
1902	mean_surface_level_height = mean_surface_level_height / REAL( ngp_2dh )
1903	#else
1904	ngp_2dh = ngp_2dh_l
1905	ngp_2dh_outer = ngp_2dh_outer_l
1906	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1907	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1908	mean_surface_level_height = mean_surface_level_height_l / REAL( ngp_2dh_l )
1909	#endif
1910
1911	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1912	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1913
1914	!
1915	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1916	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1917	!-- the respective subdomain lie below the surface topography
1918	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1919	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1920	ngp_3d_inner(:) )
1921	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1922
1923	DEALLOCATE( mean_surface_level_height_l, ngp_2dh_l, ngp_2dh_outer_l, &
1924	ngp_3d_inner_l, ngp_3d_inner_tmp )
1925
1926	CALL location_message( 'leaving init_3d_model', .TRUE. )
1927
1928	END SUBROUTINE init_3d_model

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