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source: palm/trunk/SOURCE/init_3d_model.f90 @ 151

Last change on this file since 151 was 151, checked in by raasch, 16 years ago
preliminary update for the turbulence recycling method
Property svn:keywords set to `Id`
File size: 43.9 KB

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1	#if defined( __ibmy_special )
2	@PROCESS NOOPTimize
3	#endif
4	SUBROUTINE init_3d_model
5
6	!------------------------------------------------------------------------------!
7	! Actual revisions:
8	! -----------------
9	! Allocation of hom_sum moved to parin, initialization of spectrum_x\|y directly
10	! after allocating theses arrays,
11	! read data for recycling added as new initialization option
12	!
13	! Former revisions:
14	! -----------------
15	! $Id: init_3d_model.f90 151 2008-03-07 13:42:18Z raasch $
16	!
17	! 138 2007-11-28 10:03:58Z letzel
18	! New counter ngp_2dh_s_inner.
19	! Allow new case bc_uv_t = 'dirichlet_0' for channel flow.
20	! Corrected calculation of initial volume flow for 'set_1d-model_profiles' and
21	! 'set_constant_profiles' in case of buildings in the reference cross-sections.
22	!
23	! 108 2007-08-24 15:10:38Z letzel
24	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
25	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
26	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
27	! Rayleigh damping for ocean, optionally calculate km and kh from initial
28	! TKE e_init
29	!
30	! 97 2007-06-21 08:23:15Z raasch
31	! Initialization of salinity, call of init_ocean
32	!
33	! 87 2007-05-22 15:46:47Z raasch
34	! var_hom and var_sum renamed pr_palm
35	!
36	! 75 2007-03-22 09:54:05Z raasch
37	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
38	! bugfix for cases with the outflow damping layer extending over more than one
39	! subdomain, moisture renamed humidity,
40	! new initializing action "by_user" calls user_init_3d_model,
41	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
42	! initial velocities at nzb+1 are regarded for volume
43	! flow control in case they have been set zero before (to avoid small timesteps)
44	! -uvmean_outflow, uxrp, vynp eliminated
45	!
46	! 19 2007-02-23 04:53:48Z raasch
47	! +handling of top fluxes
48	!
49	! RCS Log replace by Id keyword, revision history cleaned up
50	!
51	! Revision 1.49 2006/08/22 15:59:07 raasch
52	! No optimization of this file on the ibmy (Yonsei Univ.)
53	!
54	! Revision 1.1 1998/03/09 16:22:22 raasch
55	! Initial revision
56	!
57	!
58	! Description:
59	! ------------
60	! Allocation of arrays and initialization of the 3D model via
61	! a) pre-run the 1D model
62	! or
63	! b) pre-set constant linear profiles
64	! or
65	! c) read values of a previous run
66	!------------------------------------------------------------------------------!
67
68	USE arrays_3d
69	USE averaging
70	USE cloud_parameters
71	USE constants
72	USE control_parameters
73	USE cpulog
74	USE indices
75	USE interfaces
76	USE model_1d
77	USE netcdf_control
78	USE particle_attributes
79	USE pegrid
80	USE profil_parameter
81	USE random_function_mod
82	USE statistics
83
84	IMPLICIT NONE
85
86	INTEGER :: i, j, k, sr
87
88	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l, ngp_3d_inner_l
89
90	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l, &
91	ngp_2dh_s_inner_l
92
93	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
94
95
96	!
97	!-- Allocate arrays
98	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
99	ngp_3d(0:statistic_regions), &
100	ngp_3d_inner(0:statistic_regions), &
101	ngp_3d_inner_l(0:statistic_regions), &
102	sums_divnew_l(0:statistic_regions), &
103	sums_divold_l(0:statistic_regions) )
104	ALLOCATE( rdf(nzb+1:nzt) )
105	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
106	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
107	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
108	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
109	rmask(nys-1:nyn+1,nxl-1:nxr+1,0:statistic_regions), &
110	sums(nzb:nzt+1,pr_palm+max_pr_user), &
111	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
112	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
113	sums_up_fraction_l(10,3,0:statistic_regions), &
114	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
115	ts_value(var_ts,0:statistic_regions) )
116	ALLOCATE( km_damp_x(nxl-1:nxr+1), km_damp_y(nys-1:nyn+1) )
117
118	ALLOCATE( rif_1(nys-1:nyn+1,nxl-1:nxr+1), shf_1(nys-1:nyn+1,nxl-1:nxr+1), &
119	ts(nys-1:nyn+1,nxl-1:nxr+1), tswst_1(nys-1:nyn+1,nxl-1:nxr+1), &
120	us(nys-1:nyn+1,nxl-1:nxr+1), usws_1(nys-1:nyn+1,nxl-1:nxr+1), &
121	uswst_1(nys-1:nyn+1,nxl-1:nxr+1), &
122	vsws_1(nys-1:nyn+1,nxl-1:nxr+1), &
123	vswst_1(nys-1:nyn+1,nxl-1:nxr+1), z0(nys-1:nyn+1,nxl-1:nxr+1) )
124
125	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
126	!
127	!-- Leapfrog scheme needs two timelevels of diffusion quantities
128	ALLOCATE( rif_2(nys-1:nyn+1,nxl-1:nxr+1), &
129	shf_2(nys-1:nyn+1,nxl-1:nxr+1), &
130	tswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
131	usws_2(nys-1:nyn+1,nxl-1:nxr+1), &
132	uswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
133	vswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
134	vsws_2(nys-1:nyn+1,nxl-1:nxr+1) )
135	ENDIF
136
137	ALLOCATE( d(nzb+1:nzta,nys:nyna,nxl:nxra), &
138	e_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
139	e_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
140	e_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
141	kh_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
142	km_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
143	p(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
144	pt_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
145	pt_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
146	pt_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
147	tend(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
148	u_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
149	u_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
150	u_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
151	v_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
152	v_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
153	v_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
154	w_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
155	w_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
156	w_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
157
158	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
159	ALLOCATE( kh_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
160	km_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
161	ENDIF
162
163	IF ( humidity .OR. passive_scalar ) THEN
164	!
165	!-- 2D-humidity/scalar arrays
166	ALLOCATE ( qs(nys-1:nyn+1,nxl-1:nxr+1), &
167	qsws_1(nys-1:nyn+1,nxl-1:nxr+1), &
168	qswst_1(nys-1:nyn+1,nxl-1:nxr+1) )
169
170	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
171	ALLOCATE( qsws_2(nys-1:nyn+1,nxl-1:nxr+1), &
172	qswst_2(nys-1:nyn+1,nxl-1:nxr+1) )
173	ENDIF
174	!
175	!-- 3D-humidity/scalar arrays
176	ALLOCATE( q_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
177	q_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
178	q_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
179
180	!
181	!-- 3D-arrays needed for humidity only
182	IF ( humidity ) THEN
183	ALLOCATE( vpt_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
184
185	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
186	ALLOCATE( vpt_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
187	ENDIF
188
189	IF ( cloud_physics ) THEN
190	!
191	!-- Liquid water content
192	ALLOCATE ( ql_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
193	!
194	!-- Precipitation amount and rate (only needed if output is switched)
195	ALLOCATE( precipitation_amount(nys-1:nyn+1,nxl-1:nxr+1), &
196	precipitation_rate(nys-1:nyn+1,nxl-1:nxr+1) )
197	ENDIF
198
199	IF ( cloud_droplets ) THEN
200	!
201	!-- Liquid water content, change in liquid water content,
202	!-- real volume of particles (with weighting), volume of particles
203	ALLOCATE ( ql_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
204	ql_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
205	ql_v(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
206	ql_vp(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
207	ENDIF
208
209	ENDIF
210
211	ENDIF
212
213	IF ( ocean ) THEN
214	ALLOCATE( saswsb_1(nys-1:nyn+1,nxl-1:nxr+1), &
215	saswst_1(nys-1:nyn+1,nxl-1:nxr+1) )
216	ALLOCATE( rho_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
217	sa_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
218	sa_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
219	sa_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
220	rho => rho_1 ! routine calc_mean_profile requires density to be a
221	! pointer
222	IF ( humidity_remote ) THEN
223	ALLOCATE( qswst_remote(nys-1:nyn+1,nxl-1:nxr+1) )
224	qswst_remote = 0.0
225	ENDIF
226	ENDIF
227
228	!
229	!-- 3D-array for storing the dissipation, needed for calculating the sgs
230	!-- particle velocities
231	IF ( use_sgs_for_particles ) THEN
232	ALLOCATE ( diss(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
233	ENDIF
234
235	IF ( dt_dosp /= 9999999.9 ) THEN
236	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
237	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
238	spectrum_x = 0.0
239	spectrum_y = 0.0
240	ENDIF
241
242	!
243	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
244	IF ( plant_canopy ) THEN
245	ALLOCATE ( lad_s(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
246	lad_u(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
247	lad_v(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
248	lad_w(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
249	cdc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
250	ENDIF
251
252	!
253	!-- 4D-array for storing the Rif-values at vertical walls
254	IF ( topography /= 'flat' ) THEN
255	ALLOCATE( rif_wall(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1,1:4) )
256	rif_wall = 0.0
257	ENDIF
258
259	!
260	!-- Velocities at nzb+1 needed for volume flow control
261	IF ( conserve_volume_flow ) THEN
262	ALLOCATE( u_nzb_p1_for_vfc(nys:nyn), v_nzb_p1_for_vfc(nxl:nxr) )
263	u_nzb_p1_for_vfc = 0.0
264	v_nzb_p1_for_vfc = 0.0
265	ENDIF
266
267	!
268	!-- Arrays to store velocity data from t-dt and the phase speeds which
269	!-- are needed for radiation boundary conditions
270	IF ( outflow_l ) THEN
271	ALLOCATE( u_m_l(nzb:nzt+1,nys-1:nyn+1,1:2), &
272	v_m_l(nzb:nzt+1,nys-1:nyn+1,0:1), &
273	w_m_l(nzb:nzt+1,nys-1:nyn+1,0:1) )
274	ENDIF
275	IF ( outflow_r ) THEN
276	ALLOCATE( u_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx), &
277	v_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx), &
278	w_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx) )
279	ENDIF
280	IF ( outflow_l .OR. outflow_r ) THEN
281	ALLOCATE( c_u(nzb:nzt+1,nys-1:nyn+1), c_v(nzb:nzt+1,nys-1:nyn+1), &
282	c_w(nzb:nzt+1,nys-1:nyn+1) )
283	ENDIF
284	IF ( outflow_s ) THEN
285	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxl-1:nxr+1), &
286	v_m_s(nzb:nzt+1,1:2,nxl-1:nxr+1), &
287	w_m_s(nzb:nzt+1,0:1,nxl-1:nxr+1) )
288	ENDIF
289	IF ( outflow_n ) THEN
290	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxl-1:nxr+1), &
291	v_m_n(nzb:nzt+1,ny-1:ny,nxl-1:nxr+1), &
292	w_m_n(nzb:nzt+1,ny-1:ny,nxl-1:nxr+1) )
293	ENDIF
294	IF ( outflow_s .OR. outflow_n ) THEN
295	ALLOCATE( c_u(nzb:nzt+1,nxl-1:nxr+1), c_v(nzb:nzt+1,nxl-1:nxr+1), &
296	c_w(nzb:nzt+1,nxl-1:nxr+1) )
297	ENDIF
298
299	!
300	!-- Initial assignment of the pointers
301	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
302
303	rif_m => rif_1; rif => rif_2
304	shf_m => shf_1; shf => shf_2
305	tswst_m => tswst_1; tswst => tswst_2
306	usws_m => usws_1; usws => usws_2
307	uswst_m => uswst_1; uswst => uswst_2
308	vsws_m => vsws_1; vsws => vsws_2
309	vswst_m => vswst_1; vswst => vswst_2
310	e_m => e_1; e => e_2; e_p => e_3; te_m => e_3
311	kh_m => kh_1; kh => kh_2
312	km_m => km_1; km => km_2
313	pt_m => pt_1; pt => pt_2; pt_p => pt_3; tpt_m => pt_3
314	u_m => u_1; u => u_2; u_p => u_3; tu_m => u_3
315	v_m => v_1; v => v_2; v_p => v_3; tv_m => v_3
316	w_m => w_1; w => w_2; w_p => w_3; tw_m => w_3
317
318	IF ( humidity .OR. passive_scalar ) THEN
319	qsws_m => qsws_1; qsws => qsws_2
320	qswst_m => qswst_1; qswst => qswst_2
321	q_m => q_1; q => q_2; q_p => q_3; tq_m => q_3
322	IF ( humidity ) vpt_m => vpt_1; vpt => vpt_2
323	IF ( cloud_physics ) ql => ql_1
324	IF ( cloud_droplets ) THEN
325	ql => ql_1
326	ql_c => ql_2
327	ENDIF
328	ENDIF
329
330	ELSE
331
332	rif => rif_1
333	shf => shf_1
334	tswst => tswst_1
335	usws => usws_1
336	uswst => uswst_1
337	vsws => vsws_1
338	vswst => vswst_1
339	e => e_1; e_p => e_2; te_m => e_3; e_m => e_3
340	kh => kh_1
341	km => km_1
342	pt => pt_1; pt_p => pt_2; tpt_m => pt_3; pt_m => pt_3
343	u => u_1; u_p => u_2; tu_m => u_3; u_m => u_3
344	v => v_1; v_p => v_2; tv_m => v_3; v_m => v_3
345	w => w_1; w_p => w_2; tw_m => w_3; w_m => w_3
346
347	IF ( humidity .OR. passive_scalar ) THEN
348	qsws => qsws_1
349	qswst => qswst_1
350	q => q_1; q_p => q_2; tq_m => q_3; q_m => q_3
351	IF ( humidity ) vpt => vpt_1
352	IF ( cloud_physics ) ql => ql_1
353	IF ( cloud_droplets ) THEN
354	ql => ql_1
355	ql_c => ql_2
356	ENDIF
357	ENDIF
358
359	IF ( ocean ) THEN
360	saswsb => saswsb_1
361	saswst => saswst_1
362	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
363	ENDIF
364
365	ENDIF
366
367	!
368	!-- Initialize model variables
369	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
370	TRIM( initializing_actions ) /= 'read_data_for_recycling' ) THEN
371	!
372	!-- First model run of a possible job queue.
373	!-- Initial profiles of the variables must be computes.
374	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
375	!
376	!-- Use solutions of the 1D model as initial profiles,
377	!-- start 1D model
378	CALL init_1d_model
379	!
380	!-- Transfer initial profiles to the arrays of the 3D model
381	DO i = nxl-1, nxr+1
382	DO j = nys-1, nyn+1
383	e(:,j,i) = e1d
384	kh(:,j,i) = kh1d
385	km(:,j,i) = km1d
386	pt(:,j,i) = pt_init
387	u(:,j,i) = u1d
388	v(:,j,i) = v1d
389	ENDDO
390	ENDDO
391
392	IF ( humidity .OR. passive_scalar ) THEN
393	DO i = nxl-1, nxr+1
394	DO j = nys-1, nyn+1
395	q(:,j,i) = q_init
396	ENDDO
397	ENDDO
398	ENDIF
399
400	IF ( .NOT. constant_diffusion ) THEN
401	DO i = nxl-1, nxr+1
402	DO j = nys-1, nyn+1
403	e(:,j,i) = e1d
404	ENDDO
405	ENDDO
406	!
407	!-- Store initial profiles for output purposes etc.
408	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
409
410	IF ( prandtl_layer ) THEN
411	rif = rif1d(nzb+1)
412	ts = 0.0 ! could actually be computed more accurately in the
413	! 1D model. Update when opportunity arises.
414	us = us1d
415	usws = usws1d
416	vsws = vsws1d
417	ELSE
418	ts = 0.0 ! must be set, because used in
419	rif = 0.0 ! flowste
420	us = 0.0
421	usws = 0.0
422	vsws = 0.0
423	ENDIF
424
425	ELSE
426	e = 0.0 ! must be set, because used in
427	rif = 0.0 ! flowste
428	ts = 0.0
429	us = 0.0
430	usws = 0.0
431	vsws = 0.0
432	ENDIF
433	uswst = top_momentumflux_u
434	vswst = top_momentumflux_v
435
436	!
437	!-- In every case qs = 0.0 (see also pt)
438	!-- This could actually be computed more accurately in the 1D model.
439	!-- Update when opportunity arises!
440	IF ( humidity .OR. passive_scalar ) qs = 0.0
441
442	!
443	!-- inside buildings set velocities back to zero
444	IF ( topography /= 'flat' ) THEN
445	DO i = nxl-1, nxr+1
446	DO j = nys-1, nyn+1
447	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
448	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
449	ENDDO
450	ENDDO
451	IF ( conserve_volume_flow ) THEN
452	IF ( nxr == nx ) THEN
453	DO j = nys, nyn
454	DO k = nzb + 1, nzb_u_inner(j,nx)
455	u_nzb_p1_for_vfc(j) = u1d(k) * dzu(k)
456	ENDDO
457	ENDDO
458	ENDIF
459	IF ( nyn == ny ) THEN
460	DO i = nxl, nxr
461	DO k = nzb + 1, nzb_v_inner(ny,i)
462	v_nzb_p1_for_vfc(i) = v1d(k) * dzu(k)
463	ENDDO
464	ENDDO
465	ENDIF
466	ENDIF
467	!
468	!-- WARNING: The extra boundary conditions set after running the
469	!-- ------- 1D model impose an error on the divergence one layer
470	!-- below the topography; need to correct later
471	!-- ATTENTION: Provisional correction for Piacsek & Williams
472	!-- --------- advection scheme: keep u and v zero one layer below
473	!-- the topography.
474	IF ( ibc_uv_b == 0 ) THEN
475	!
476	!-- Satisfying the Dirichlet condition with an extra layer below
477	!-- the surface where the u and v component change their sign.
478	DO i = nxl-1, nxr+1
479	DO j = nys-1, nyn+1
480	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = -u(1,j,i)
481	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = -v(1,j,i)
482	ENDDO
483	ENDDO
484
485	ELSE
486	!
487	!-- Neumann condition
488	DO i = nxl-1, nxr+1
489	DO j = nys-1, nyn+1
490	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
491	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
492	ENDDO
493	ENDDO
494
495	ENDIF
496
497	ENDIF
498
499	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
500	THEN
501	!
502	!-- Use constructed initial profiles (velocity constant with height,
503	!-- temperature profile with constant gradient)
504	DO i = nxl-1, nxr+1
505	DO j = nys-1, nyn+1
506	pt(:,j,i) = pt_init
507	u(:,j,i) = u_init
508	v(:,j,i) = v_init
509	ENDDO
510	ENDDO
511
512	!
513	!-- Set initial horizontal velocities at the lowest computational grid levels
514	!-- to zero in order to avoid too small time steps caused by the diffusion
515	!-- limit in the initial phase of a run (at k=1, dz/2 occurs in the
516	!-- limiting formula!). The original values are stored to be later used for
517	!-- volume flow control.
518	DO i = nxl-1, nxr+1
519	DO j = nys-1, nyn+1
520	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
521	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
522	ENDDO
523	ENDDO
524	IF ( conserve_volume_flow ) THEN
525	IF ( nxr == nx ) THEN
526	DO j = nys, nyn
527	DO k = nzb + 1, nzb_u_inner(j,nx) + 1
528	u_nzb_p1_for_vfc(j) = u_init(k) * dzu(k)
529	ENDDO
530	ENDDO
531	ENDIF
532	IF ( nyn == ny ) THEN
533	DO i = nxl, nxr
534	DO k = nzb + 1, nzb_v_inner(ny,i) + 1
535	v_nzb_p1_for_vfc(i) = v_init(k) * dzu(k)
536	ENDDO
537	ENDDO
538	ENDIF
539	ENDIF
540
541	IF ( humidity .OR. passive_scalar ) THEN
542	DO i = nxl-1, nxr+1
543	DO j = nys-1, nyn+1
544	q(:,j,i) = q_init
545	ENDDO
546	ENDDO
547	ENDIF
548
549	IF ( ocean ) THEN
550	DO i = nxl-1, nxr+1
551	DO j = nys-1, nyn+1
552	sa(:,j,i) = sa_init
553	ENDDO
554	ENDDO
555	ENDIF
556
557	IF ( constant_diffusion ) THEN
558	km = km_constant
559	kh = km / prandtl_number
560	e = 0.0
561	ELSEIF ( e_init > 0.0 ) THEN
562	DO k = nzb+1, nzt
563	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
564	ENDDO
565	km(nzb,:,:) = km(nzb+1,:,:)
566	km(nzt+1,:,:) = km(nzt,:,:)
567	kh = km / prandtl_number
568	e = e_init
569	ELSE
570	IF ( .NOT. ocean ) THEN
571	kh = 0.01 ! there must exist an initial diffusion, because
572	km = 0.01 ! otherwise no TKE would be produced by the
573	! production terms, as long as not yet
574	! e = (u/cm)*2 at k=nzb+1
575	ELSE
576	kh = 0.00001
577	km = 0.00001
578	ENDIF
579	e = 0.0
580	ENDIF
581	rif = 0.0
582	ts = 0.0
583	us = 0.0
584	usws = 0.0
585	uswst = top_momentumflux_u
586	vsws = 0.0
587	vswst = top_momentumflux_v
588	IF ( humidity .OR. passive_scalar ) qs = 0.0
589
590	!
591	!-- Compute initial temperature field and other constants used in case
592	!-- of a sloping surface
593	IF ( sloping_surface ) CALL init_slope
594
595	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
596	THEN
597	!
598	!-- Initialization will completely be done by the user
599	CALL user_init_3d_model
600
601	ENDIF
602
603	!
604	!-- Apply channel flow boundary condition
605	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
606
607	u(nzt+1,:,:) = 0.0
608	v(nzt+1,:,:) = 0.0
609
610	!-- For the Dirichlet condition to be correctly applied at the top, set
611	!-- ug and vg to zero there
612	ug(nzt+1) = 0.0
613	vg(nzt+1) = 0.0
614
615	ENDIF
616
617	!
618	!-- Calculate virtual potential temperature
619	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
620
621	!
622	!-- Store initial profiles for output purposes etc.
623	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
624	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
625	IF ( ibc_uv_b == 0 ) THEN
626	hom(nzb,1,5,:) = -hom(nzb+1,1,5,:) ! due to satisfying the Dirichlet
627	hom(nzb,1,6,:) = -hom(nzb+1,1,6,:) ! condition with an extra layer
628	! below the surface where the u and v component change their sign
629	ENDIF
630	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
631	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
632	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
633
634	IF ( ocean ) THEN
635	!
636	!-- Store initial salinity profile
637	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
638	ENDIF
639
640	IF ( humidity ) THEN
641	!
642	!-- Store initial profile of total water content, virtual potential
643	!-- temperature
644	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
645	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
646	IF ( cloud_physics .OR. cloud_droplets ) THEN
647	!
648	!-- Store initial profile of specific humidity and potential
649	!-- temperature
650	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
651	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
652	ENDIF
653	ENDIF
654
655	IF ( passive_scalar ) THEN
656	!
657	!-- Store initial scalar profile
658	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
659	ENDIF
660
661	!
662	!-- Initialize fluxes at bottom surface
663	IF ( use_surface_fluxes ) THEN
664
665	IF ( constant_heatflux ) THEN
666	!
667	!-- Heat flux is prescribed
668	IF ( random_heatflux ) THEN
669	CALL disturb_heatflux
670	ELSE
671	shf = surface_heatflux
672	!
673	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
674	IF ( TRIM( topography ) /= 'flat' ) THEN
675	DO i = nxl-1, nxr+1
676	DO j = nys-1, nyn+1
677	IF ( nzb_s_inner(j,i) /= 0 ) THEN
678	shf(j,i) = wall_heatflux(0)
679	ENDIF
680	ENDDO
681	ENDDO
682	ENDIF
683	ENDIF
684	IF ( ASSOCIATED( shf_m ) ) shf_m = shf
685	ENDIF
686
687	!
688	!-- Determine the near-surface water flux
689	IF ( humidity .OR. passive_scalar ) THEN
690	IF ( constant_waterflux ) THEN
691	qsws = surface_waterflux
692	IF ( ASSOCIATED( qsws_m ) ) qsws_m = qsws
693	ENDIF
694	ENDIF
695
696	ENDIF
697
698	!
699	!-- Initialize fluxes at top surface
700	!-- Currently, only the heatflux and salinity flux can be prescribed.
701	!-- The latent flux is zero in this case!
702	IF ( use_top_fluxes ) THEN
703
704	IF ( constant_top_heatflux ) THEN
705	!
706	!-- Heat flux is prescribed
707	tswst = top_heatflux
708	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
709
710	IF ( humidity .OR. passive_scalar ) THEN
711	qswst = 0.0
712	IF ( ASSOCIATED( qswst_m ) ) qswst_m = qswst
713	ENDIF
714
715	IF ( ocean ) THEN
716	saswsb = bottom_salinityflux
717	saswst = top_salinityflux
718	ENDIF
719	ENDIF
720
721	!
722	!-- Initialization in case of a coupled model run
723	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
724	tswst = 0.0
725	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
726	ENDIF
727
728	ENDIF
729
730	!
731	!-- Initialize Prandtl layer quantities
732	IF ( prandtl_layer ) THEN
733
734	z0 = roughness_length
735
736	IF ( .NOT. constant_heatflux ) THEN
737	!
738	!-- Surface temperature is prescribed. Here the heat flux cannot be
739	!-- simply estimated, because therefore rif, u* and theta* would have
740	!-- to be computed by iteration. This is why the heat flux is assumed
741	!-- to be zero before the first time step. It approaches its correct
742	!-- value in the course of the first few time steps.
743	shf = 0.0
744	IF ( ASSOCIATED( shf_m ) ) shf_m = 0.0
745	ENDIF
746
747	IF ( humidity .OR. passive_scalar ) THEN
748	IF ( .NOT. constant_waterflux ) THEN
749	qsws = 0.0
750	IF ( ASSOCIATED( qsws_m ) ) qsws_m = 0.0
751	ENDIF
752	ENDIF
753
754	ENDIF
755
756	!
757	!-- For the moment, perturbation pressure and vertical velocity are zero
758	p = 0.0; w = 0.0
759
760	!
761	!-- Initialize array sums (must be defined in first call of pres)
762	sums = 0.0
763
764	!
765	!-- Treating cloud physics, liquid water content and precipitation amount
766	!-- are zero at beginning of the simulation
767	IF ( cloud_physics ) THEN
768	ql = 0.0
769	IF ( precipitation ) precipitation_amount = 0.0
770	ENDIF
771
772	!
773	!-- Impose vortex with vertical axis on the initial velocity profile
774	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
775	CALL init_rankine
776	ENDIF
777
778	!
779	!-- Impose temperature anomaly (advection test only)
780	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
781	CALL init_pt_anomaly
782	ENDIF
783
784	!
785	!-- If required, change the surface temperature at the start of the 3D run
786	IF ( pt_surface_initial_change /= 0.0 ) THEN
787	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
788	ENDIF
789
790	!
791	!-- If required, change the surface humidity/scalar at the start of the 3D
792	!-- run
793	IF ( ( humidity .OR. passive_scalar ) .AND. &
794	q_surface_initial_change /= 0.0 ) THEN
795	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
796	ENDIF
797
798	!
799	!-- Initialize the random number generator (from numerical recipes)
800	CALL random_function_ini
801
802	!
803	!-- Impose random perturbation on the horizontal velocity field and then
804	!-- remove the divergences from the velocity field
805	IF ( create_disturbances ) THEN
806	CALL disturb_field( nzb_u_inner, tend, u )
807	CALL disturb_field( nzb_v_inner, tend, v )
808	n_sor = nsor_ini
809	CALL pres
810	n_sor = nsor
811	ENDIF
812
813	!
814	!-- Once again set the perturbation pressure explicitly to zero in order to
815	!-- assure that it does not generate any divergences in the first time step.
816	!-- At t=0 the velocity field is free of divergence (as constructed above).
817	!-- Divergences being created during a time step are not yet known and thus
818	!-- cannot be corrected during the time step yet.
819	p = 0.0
820
821	!
822	!-- Initialize old and new time levels.
823	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
824	e_m = e; pt_m = pt; u_m = u; v_m = v; w_m = w; kh_m = kh; km_m = km
825	ELSE
826	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
827	ENDIF
828	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
829
830	IF ( humidity .OR. passive_scalar ) THEN
831	IF ( ASSOCIATED( q_m ) ) q_m = q
832	IF ( timestep_scheme(1:5) == 'runge' ) tq_m = 0.0
833	q_p = q
834	IF ( humidity .AND. ASSOCIATED( vpt_m ) ) vpt_m = vpt
835	ENDIF
836
837	IF ( ocean ) THEN
838	tsa_m = 0.0
839	sa_p = sa
840	ENDIF
841
842
843	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
844	TRIM( initializing_actions ) == 'read_data_for_recycling' ) &
845	THEN
846	!
847	!-- When reading data for initializing the recycling method, first read
848	!-- some of the global variables from restart file
849	IF ( TRIM( initializing_actions ) == 'read_data_for_recycling' ) THEN
850
851	WRITE (9,*) 'before read_parts_of_var_list'
852	CALL local_flush( 9 )
853	CALL read_parts_of_var_list
854	WRITE (9,*) 'after read_parts_of_var_list'
855	CALL local_flush( 9 )
856	CALL close_file( 13 )
857	!
858	!-- Store temporally and horizontally averaged vertical profiles to be
859	!-- used as mean inflow profiles
860	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
861
862	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
863	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
864	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
865	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
866
867	!
868	!-- Use these mean profiles for the inflow (provided that Dirichlet
869	!-- conditions are used)
870	IF ( inflow_l ) THEN
871	DO j = nys-1, nyn+1
872	DO k = nzb, nzt+1
873	u(k,j,-1) = mean_inflow_profiles(k,1)
874	v(k,j,-1) = mean_inflow_profiles(k,2)
875	w(k,j,-1) = 0.0
876	pt(k,j,-1) = mean_inflow_profiles(k,4)
877	e(k,j,-1) = mean_inflow_profiles(k,5)
878	ENDDO
879	ENDDO
880	ENDIF
881
882	!
883	!-- Calculate the damping factors to be used at the inflow. For a
884	!-- turbulent inflow the turbulent fluctuations have to be limited
885	!-- vertically because otherwise the turbulent inflow layer will grow
886	!-- in time.
887	IF ( inflow_damping_height == 9999999.9 ) THEN
888	!
889	!-- Default: use the inversion height calculated by the prerun
890	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
891
892	ENDIF
893
894	IF ( inflow_damping_width == 9999999.9 ) THEN
895	!
896	!-- Default for the transition range: one tenth of the undamped layer
897	inflow_damping_width = 0.1 * inflow_damping_height
898
899	ENDIF
900
901	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
902
903	DO k = nzb, nzt+1
904
905	IF ( zu(k) <= inflow_damping_height ) THEN
906	inflow_damping_factor(k) = 1.0
907	ELSEIF ( zu(k) <= inflow_damping_height + inflow_damping_width ) &
908	THEN
909	inflow_damping_factor(k) = 1.0 - &
910	( zu(k) - inflow_damping_height ) / &
911	inflow_damping_width
912	ELSE
913	inflow_damping_factor(k) = 0.0
914	ENDIF
915
916	ENDDO
917
918	ENDIF
919
920
921	!
922	!-- Read binary data from restart file
923	WRITE (9,*) 'before read_3d_binary'
924	CALL local_flush( 9 )
925	CALL read_3d_binary
926	WRITE (9,*) 'after read_3d_binary'
927	CALL local_flush( 9 )
928
929	!
930	!-- Calculate initial temperature field and other constants used in case
931	!-- of a sloping surface
932	IF ( sloping_surface ) CALL init_slope
933
934	!
935	!-- Initialize new time levels (only done in order to set boundary values
936	!-- including ghost points)
937	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
938	IF ( humidity .OR. passive_scalar ) q_p = q
939	IF ( ocean ) sa_p = sa
940
941	ELSE
942	!
943	!-- Actually this part of the programm should not be reached
944	IF ( myid == 0 ) PRINT*,'+++ init_3d_model: unknown initializing ', &
945	'problem'
946	CALL local_stop
947	ENDIF
948
949
950	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
951	!
952	!-- Initialize old timelevels needed for radiation boundary conditions
953	IF ( outflow_l ) THEN
954	u_m_l(:,:,:) = u(:,:,1:2)
955	v_m_l(:,:,:) = v(:,:,0:1)
956	w_m_l(:,:,:) = w(:,:,0:1)
957	ENDIF
958	IF ( outflow_r ) THEN
959	u_m_r(:,:,:) = u(:,:,nx-1:nx)
960	v_m_r(:,:,:) = v(:,:,nx-1:nx)
961	w_m_r(:,:,:) = w(:,:,nx-1:nx)
962	ENDIF
963	IF ( outflow_s ) THEN
964	u_m_s(:,:,:) = u(:,0:1,:)
965	v_m_s(:,:,:) = v(:,1:2,:)
966	w_m_s(:,:,:) = w(:,0:1,:)
967	ENDIF
968	IF ( outflow_n ) THEN
969	u_m_n(:,:,:) = u(:,ny-1:ny,:)
970	v_m_n(:,:,:) = v(:,ny-1:ny,:)
971	w_m_n(:,:,:) = w(:,ny-1:ny,:)
972	ENDIF
973
974	!
975	!-- Calculate the initial volume flow at the right and north boundary
976	IF ( conserve_volume_flow ) THEN
977
978	volume_flow_initial_l = 0.0
979	volume_flow_area_l = 0.0
980
981	IF ( nxr == nx ) THEN
982	DO j = nys, nyn
983	DO k = nzb_2d(j,nx) + 1, nzt
984	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
985	u(k,j,nx) * dzu(k)
986	volume_flow_area_l(1) = volume_flow_area_l(1) + dzu(k)
987	ENDDO
988	!
989	!-- Correction if velocity at nzb+1 has been set zero further above
990	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
991	u_nzb_p1_for_vfc(j)
992	ENDDO
993	ENDIF
994
995	IF ( nyn == ny ) THEN
996	DO i = nxl, nxr
997	DO k = nzb_2d(ny,i) + 1, nzt
998	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
999	v(k,ny,i) * dzu(k)
1000	volume_flow_area_l(2) = volume_flow_area_l(2) + dzu(k)
1001	ENDDO
1002	!
1003	!-- Correction if velocity at nzb+1 has been set zero further above
1004	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1005	v_nzb_p1_for_vfc(i)
1006	ENDDO
1007	ENDIF
1008
1009	#if defined( __parallel )
1010	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1011	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1012	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1013	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1014	#else
1015	volume_flow_initial = volume_flow_initial_l
1016	volume_flow_area = volume_flow_area_l
1017	#endif
1018	ENDIF
1019
1020	ENDIF
1021
1022	!
1023	!-- Initialization of the leaf area density
1024	IF ( plant_canopy ) THEN
1025
1026	SELECT CASE ( TRIM( canopy_mode ) )
1027
1028	CASE( 'block' )
1029
1030	DO i = nxl-1, nxr+1
1031	DO j = nys-1, nyn+1
1032	lad_s(:,j,i) = lad(:)
1033	cdc(:,j,i) = drag_coefficient
1034	ENDDO
1035	ENDDO
1036
1037	CASE DEFAULT
1038
1039	!
1040	!-- The DEFAULT case is reached either if the parameter
1041	!-- canopy mode contains a wrong character string or if the
1042	!-- user has coded a special case in the user interface.
1043	!-- There, the subroutine user_init_plant_canopy checks
1044	!-- which of these two conditions applies.
1045	CALL user_init_plant_canopy
1046
1047	END SELECT
1048
1049	CALL exchange_horiz( lad_s )
1050	CALL exchange_horiz( cdc )
1051
1052	DO i = nxl, nxr
1053	DO j = nys, nyn
1054	DO k = nzb, nzt+1
1055	lad_u(k,j,i) = 0.5 * ( lad_s(k,j,i-1) + lad_s(k,j,i) )
1056	lad_v(k,j,i) = 0.5 * ( lad_s(k,j-1,i) + lad_s(k,j,i) )
1057	ENDDO
1058	DO k = nzb, nzt
1059	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1060	ENDDO
1061	ENDDO
1062	ENDDO
1063
1064	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1065
1066	CALL exchange_horiz( lad_u )
1067	CALL exchange_horiz( lad_v )
1068	CALL exchange_horiz( lad_w )
1069
1070	ENDIF
1071
1072	!
1073	!-- If required, initialize dvrp-software
1074	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
1075
1076	IF ( ocean ) THEN
1077	!
1078	!-- Initialize quantities needed for the ocean model
1079	CALL init_ocean
1080	ELSE
1081	!
1082	!-- Initialize quantities for handling cloud physics
1083	!-- This routine must be called before init_particles, because
1084	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1085	!-- init_particles) is not defined.
1086	CALL init_cloud_physics
1087	ENDIF
1088
1089	!
1090	!-- If required, initialize particles
1091	IF ( particle_advection ) CALL init_particles
1092
1093	!
1094	!-- Initialize quantities for special advections schemes
1095	CALL init_advec
1096
1097	!
1098	!-- Initialize Rayleigh damping factors
1099	rdf = 0.0
1100	IF ( rayleigh_damping_factor /= 0.0 ) THEN
1101	IF ( .NOT. ocean ) THEN
1102	DO k = nzb+1, nzt
1103	IF ( zu(k) >= rayleigh_damping_height ) THEN
1104	rdf(k) = rayleigh_damping_factor * &
1105	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
1106	/ ( zu(nzt) - rayleigh_damping_height ) )&
1107	)**2
1108	ENDIF
1109	ENDDO
1110	ELSE
1111	DO k = nzt, nzb+1, -1
1112	IF ( zu(k) <= rayleigh_damping_height ) THEN
1113	rdf(k) = rayleigh_damping_factor * &
1114	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
1115	/ ( rayleigh_damping_height - zu(nzb+1)))&
1116	)**2
1117	ENDIF
1118	ENDDO
1119	ENDIF
1120	ENDIF
1121
1122	!
1123	!-- Initialize diffusivities used within the outflow damping layer in case of
1124	!-- non-cyclic lateral boundaries. A linear increase is assumed over the first
1125	!-- half of the width of the damping layer
1126	IF ( bc_lr == 'dirichlet/radiation' ) THEN
1127
1128	DO i = nxl-1, nxr+1
1129	IF ( i >= nx - outflow_damping_width ) THEN
1130	km_damp_x(i) = km_damp_max * MIN( 1.0, &
1131	( i - ( nx - outflow_damping_width ) ) / &
1132	REAL( outflow_damping_width/2 ) &
1133	)
1134	ELSE
1135	km_damp_x(i) = 0.0
1136	ENDIF
1137	ENDDO
1138
1139	ELSEIF ( bc_lr == 'radiation/dirichlet' ) THEN
1140
1141	DO i = nxl-1, nxr+1
1142	IF ( i <= outflow_damping_width ) THEN
1143	km_damp_x(i) = km_damp_max * MIN( 1.0, &
1144	( outflow_damping_width - i ) / &
1145	REAL( outflow_damping_width/2 ) &
1146	)
1147	ELSE
1148	km_damp_x(i) = 0.0
1149	ENDIF
1150	ENDDO
1151
1152	ENDIF
1153
1154	IF ( bc_ns == 'dirichlet/radiation' ) THEN
1155
1156	DO j = nys-1, nyn+1
1157	IF ( j >= ny - outflow_damping_width ) THEN
1158	km_damp_y(j) = km_damp_max * MIN( 1.0, &
1159	( j - ( ny - outflow_damping_width ) ) / &
1160	REAL( outflow_damping_width/2 ) &
1161	)
1162	ELSE
1163	km_damp_y(j) = 0.0
1164	ENDIF
1165	ENDDO
1166
1167	ELSEIF ( bc_ns == 'radiation/dirichlet' ) THEN
1168
1169	DO j = nys-1, nyn+1
1170	IF ( j <= outflow_damping_width ) THEN
1171	km_damp_y(j) = km_damp_max * MIN( 1.0, &
1172	( outflow_damping_width - j ) / &
1173	REAL( outflow_damping_width/2 ) &
1174	)
1175	ELSE
1176	km_damp_y(j) = 0.0
1177	ENDIF
1178	ENDDO
1179
1180	ENDIF
1181
1182	!
1183	!-- Initialize local summation arrays for UP flow_statistics. This is necessary
1184	!-- because they may not yet have been initialized when they are called from
1185	!-- flow_statistics (or - depending on the chosen model run - are never
1186	!-- initialized)
1187	sums_divnew_l = 0.0
1188	sums_divold_l = 0.0
1189	sums_l_l = 0.0
1190	sums_up_fraction_l = 0.0
1191	sums_wsts_bc_l = 0.0
1192
1193	!
1194	!-- Pre-set masks for regional statistics. Default is the total model domain.
1195	rmask = 1.0
1196
1197	!
1198	!-- User-defined initializing actions. Check afterwards, if maximum number
1199	!-- of allowed timeseries is not exceeded
1200	CALL user_init
1201
1202	IF ( dots_num > dots_max ) THEN
1203	IF ( myid == 0 ) THEN
1204	PRINT*, '+++ user_init: number of time series quantities exceeds', &
1205	' its maximum of dots_max = ', dots_max
1206	PRINT*, ' Please increase dots_max in modules.f90.'
1207	ENDIF
1208	CALL local_stop
1209	ENDIF
1210
1211	!
1212	!-- Input binary data file is not needed anymore. This line must be placed
1213	!-- after call of user_init!
1214	CALL close_file( 13 )
1215
1216	!
1217	!-- Compute total sum of active mask grid points
1218	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1219	!-- total domain
1220	!-- ngp_3d: number of grid points of the total domain
1221	ngp_2dh_outer_l = 0
1222	ngp_2dh_outer = 0
1223	ngp_2dh_s_inner_l = 0
1224	ngp_2dh_s_inner = 0
1225	ngp_2dh_l = 0
1226	ngp_2dh = 0
1227	ngp_3d_inner_l = 0
1228	ngp_3d_inner = 0
1229	ngp_3d = 0
1230	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1231
1232	DO sr = 0, statistic_regions
1233	DO i = nxl, nxr
1234	DO j = nys, nyn
1235	IF ( rmask(j,i,sr) == 1.0 ) THEN
1236	!
1237	!-- All xy-grid points
1238	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1239	!
1240	!-- xy-grid points above topography
1241	DO k = nzb_s_outer(j,i), nz + 1
1242	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1243	ENDDO
1244	DO k = nzb_s_inner(j,i), nz + 1
1245	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1246	ENDDO
1247	!
1248	!-- All grid points of the total domain above topography
1249	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1250	( nz - nzb_s_inner(j,i) + 2 )
1251	ENDIF
1252	ENDDO
1253	ENDDO
1254	ENDDO
1255
1256	sr = statistic_regions + 1
1257	#if defined( __parallel )
1258	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1259	comm2d, ierr )
1260	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1261	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1262	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1263	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1264	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner(0), sr, MPI_INTEGER, &
1265	MPI_SUM, comm2d, ierr )
1266	#else
1267	ngp_2dh = ngp_2dh_l
1268	ngp_2dh_outer = ngp_2dh_outer_l
1269	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1270	ngp_3d_inner = ngp_3d_inner_l
1271	#endif
1272
1273	ngp_3d = ngp_2dh * ( nz + 2 )
1274
1275	!
1276	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1277	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1278	!-- the respective subdomain lie below the surface topography
1279	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1280	ngp_3d_inner = MAX( 1, ngp_3d_inner(:) )
1281
1282	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l )
1283
1284
1285	END SUBROUTINE init_3d_model

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