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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1762

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

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