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source: palm/trunk/SOURCE/init_3d_model.f90 @ 995

Last change on this file since 995 was 979, checked in by fricke, 12 years ago
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1	#if defined( __ibmy_special )
2	@PROCESS NOOPTimize
3	#endif
4	SUBROUTINE init_3d_model
5
6	!------------------------------------------------------------------------------!
7	! Current revisions:
8	! ------------------
9	!
10	!
11	! Former revisions:
12	! -----------------
13	! $Id: init_3d_model.f90 979 2012-08-09 08:50:11Z maronga $
14	!
15	! 978 2012-08-09 08:28:32Z fricke
16	! outflow damping layer removed
17	! roughness length for scalar quantites z0h added
18	! damping zone for the potential temperatur in case of non-cyclic lateral
19	! boundaries added
20	! initialization of ptdf_x, ptdf_y
21	! initialization of c_u_m, c_u_m_l, c_v_m, c_v_m_l, c_w_m, c_w_m_l
22	!
23	! 849 2012-03-15 10:35:09Z raasch
24	! init_particles renamed lpm_init
25	!
26	! 825 2012-02-19 03:03:44Z raasch
27	! wang_collision_kernel renamed wang_kernel
28	!
29	! 790 2011-11-29 03:11:20Z raasch
30	! diss is also allocated in case that the Wang kernel is used
31	!
32	! 787 2011-11-28 12:49:05Z heinze $
33	! bugfix: call init_advec in every case - not only for inital runs
34	!
35	! 785 2011-11-28 09:47:19Z raasch
36	! initialization of rdf_sc
37	!
38	! 767 2011-10-14 06:39:12Z raasch
39	! adjustments concerning implementation of prescribed u,v-profiles
40	! bugfix: dirichlet_0 conditions for ug/vg moved to check_parameters
41	!
42	! 759 2011-09-15 13:58:31Z raasch
43	! Splitting of parallel I/O in blocks of PEs
44	! Bugfix: No zero assignments to volume_flow_initial and volume_flow_area in
45	! case of normal restart runs.
46	!
47	! 713 2011-03-30 14:21:21Z suehring
48	! weight_substep and weight_pres are given as fractions.
49	!
50	! 709 2011-03-30 09:31:40Z raasch
51	! formatting adjustments
52	!
53	! 707 2011-03-29 11:39:40Z raasch
54	! p_sub renamed p_loc and allocated depending on the chosen pressure solver,
55	! initial assignments of zero to array p for iterative solvers only,
56	! bc_lr/ns replaced by bc_lr/ns_dirrad/raddir
57	!
58	! 680 2011-02-04 23:16:06Z gryschka
59	! bugfix: volume_flow_control
60	!
61	! 673 2011-01-18 16:19:48Z suehring
62	! weight_substep (moved from advec_ws) and weight_pres added.
63	! Allocate p_sub when using Multigrid or SOR solver.
64	! Call of ws_init moved behind the if requests.
65	!
66	! 667 2010-12-23 12:06:00Z suehring/gryschka
67	! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng in loops and
68	! allocation of arrays. Calls of exchange_horiz are modified.
69	! Call ws_init to initialize arrays needed for calculating statisticas and for
70	! optimization when ws-scheme is used.
71	! Initial volume flow is now calculated by using the variable hom_sum.
72	! Therefore the correction of initial volume flow for non-flat topography
73	! removed (removed u_nzb_p1_for_vfc and v_nzb_p1_for_vfc)
74	! Changed surface boundary conditions for u and v in case of ibc_uv_b == 0 from
75	! mirror to Dirichlet boundary conditions (u=v=0), so that k=nzb is
76	! representative for the height z0.
77	! Bugfix: type conversion of '1' to 64bit for the MAX function (ngp_3d_inner)
78	!
79	! 622 2010-12-10 08:08:13Z raasch
80	! optional barriers included in order to speed up collective operations
81	!
82	! 560 2010-09-09 10:06:09Z weinreis
83	! bugfix: correction of calculating ngp_3d for 64 bit
84	!
85	! 485 2010-02-05 10:57:51Z raasch
86	! calculation of ngp_3d + ngp_3d_inner changed because they have now 64 bit
87	!
88	! 407 2009-12-01 15:01:15Z maronga
89	! var_ts is replaced by dots_max
90	! Enabled passive scalar/humidity wall fluxes for non-flat topography
91	!
92	! 388 2009-09-23 09:40:33Z raasch
93	! Initialization of prho added.
94	! bugfix: correction of initial volume flow for non-flat topography
95	! bugfix: zero initialization of arrays within buildings for 'cyclic_fill'
96	! bugfix: avoid that ngp_2dh_s_inner becomes zero
97	! initializing_actions='read_data_for_recycling' renamed to 'cyclic_fill', now
98	! independent of turbulent_inflow
99	! Output of messages replaced by message handling routine.
100	! Set the starting level and the vertical smoothing factor used for
101	! the external pressure gradient
102	! +conserve_volume_flow_mode: 'default', 'initial_profiles', 'inflow_profile'
103	! and 'bulk_velocity'
104	! If the inversion height calculated by the prerun is zero,
105	! inflow_damping_height must be explicitly specified.
106	!
107	! 181 2008-07-30 07:07:47Z raasch
108	! bugfix: zero assignments to tendency arrays in case of restarts,
109	! further extensions and modifications in the initialisation of the plant
110	! canopy model,
111	! allocation of hom_sum moved to parin, initialization of spectrum_x\|y directly
112	! after allocating theses arrays,
113	! read data for recycling added as new initialization option,
114	! dummy allocation for diss
115	!
116	! 138 2007-11-28 10:03:58Z letzel
117	! New counter ngp_2dh_s_inner.
118	! Allow new case bc_uv_t = 'dirichlet_0' for channel flow.
119	! Corrected calculation of initial volume flow for 'set_1d-model_profiles' and
120	! 'set_constant_profiles' in case of buildings in the reference cross-sections.
121	!
122	! 108 2007-08-24 15:10:38Z letzel
123	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
124	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
125	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
126	! Rayleigh damping for ocean, optionally calculate km and kh from initial
127	! TKE e_init
128	!
129	! 97 2007-06-21 08:23:15Z raasch
130	! Initialization of salinity, call of init_ocean
131	!
132	! 87 2007-05-22 15:46:47Z raasch
133	! var_hom and var_sum renamed pr_palm
134	!
135	! 75 2007-03-22 09:54:05Z raasch
136	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
137	! bugfix for cases with the outflow damping layer extending over more than one
138	! subdomain, moisture renamed humidity,
139	! new initializing action "by_user" calls user_init_3d_model,
140	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
141	! initial velocities at nzb+1 are regarded for volume
142	! flow control in case they have been set zero before (to avoid small timesteps)
143	! -uvmean_outflow, uxrp, vynp eliminated
144	!
145	! 19 2007-02-23 04:53:48Z raasch
146	! +handling of top fluxes
147	!
148	! RCS Log replace by Id keyword, revision history cleaned up
149	!
150	! Revision 1.49 2006/08/22 15:59:07 raasch
151	! No optimization of this file on the ibmy (Yonsei Univ.)
152	!
153	! Revision 1.1 1998/03/09 16:22:22 raasch
154	! Initial revision
155	!
156	!
157	! Description:
158	! ------------
159	! Allocation of arrays and initialization of the 3D model via
160	! a) pre-run the 1D model
161	! or
162	! b) pre-set constant linear profiles
163	! or
164	! c) read values of a previous run
165	!------------------------------------------------------------------------------!
166
167	USE advec_ws
168	USE arrays_3d
169	USE averaging
170	USE cloud_parameters
171	USE constants
172	USE control_parameters
173	USE cpulog
174	USE grid_variables
175	USE indices
176	USE interfaces
177	USE model_1d
178	USE netcdf_control
179	USE particle_attributes
180	USE pegrid
181	USE profil_parameter
182	USE random_function_mod
183	USE statistics
184
185	IMPLICIT NONE
186
187	INTEGER :: i, ind_array(1), j, k, sr
188
189	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l
190
191	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l, &
192	ngp_2dh_s_inner_l
193
194	REAL :: a, b
195
196	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
197
198	REAL, DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l, ngp_3d_inner_tmp
199
200
201	!
202	!-- Allocate arrays
203	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
204	ngp_3d(0:statistic_regions), &
205	ngp_3d_inner(0:statistic_regions), &
206	ngp_3d_inner_l(0:statistic_regions), &
207	ngp_3d_inner_tmp(0:statistic_regions), &
208	sums_divnew_l(0:statistic_regions), &
209	sums_divold_l(0:statistic_regions) )
210	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
211	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
212	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
213	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
214	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
215	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
216	sums(nzb:nzt+1,pr_palm+max_pr_user), &
217	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
218	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
219	sums_up_fraction_l(10,3,0:statistic_regions), &
220	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
221	ts_value(dots_max,0:statistic_regions) )
222	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
223
224	ALLOCATE( rif_1(nysg:nyng,nxlg:nxrg), shf_1(nysg:nyng,nxlg:nxrg), &
225	ts(nysg:nyng,nxlg:nxrg), tswst_1(nysg:nyng,nxlg:nxrg), &
226	us(nysg:nyng,nxlg:nxrg), usws_1(nysg:nyng,nxlg:nxrg), &
227	uswst_1(nysg:nyng,nxlg:nxrg), &
228	vsws_1(nysg:nyng,nxlg:nxrg), &
229	vswst_1(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg), &
230	z0h(nysg:nyng,nxlg:nxrg) )
231
232	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
233	!
234	!-- Leapfrog scheme needs two timelevels of diffusion quantities
235	ALLOCATE( rif_2(nysg:nyng,nxlg:nxrg), &
236	shf_2(nysg:nyng,nxlg:nxrg), &
237	tswst_2(nysg:nyng,nxlg:nxrg), &
238	usws_2(nysg:nyng,nxlg:nxrg), &
239	uswst_2(nysg:nyng,nxlg:nxrg), &
240	vswst_2(nysg:nyng,nxlg:nxrg), &
241	vsws_2(nysg:nyng,nxlg:nxrg) )
242	ENDIF
243
244	ALLOCATE( d(nzb+1:nzta,nys:nyna,nxl:nxra), &
245	e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
246	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
247	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
248	kh_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
249	km_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
250	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
251	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
252	pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
253	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
254	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
255	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
256	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
257	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
258	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
259	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
260	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
261	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
262	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
263	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
264	!
265	!-- Following array is required for perturbation pressure within the iterative
266	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
267	!-- the weighted average of the substeps and cannot be used in the Poisson
268	!-- solver.
269	IF ( psolver == 'sor' ) THEN
270	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
271	ELSEIF ( psolver == 'multigrid' ) THEN
272	!
273	!-- For performance reasons, multigrid is using one ghost layer only
274	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
275	ENDIF
276
277	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
278	ALLOCATE( kh_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
279	km_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
280	ENDIF
281
282	IF ( humidity .OR. passive_scalar ) THEN
283	!
284	!-- 2D-humidity/scalar arrays
285	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
286	qsws_1(nysg:nyng,nxlg:nxrg), &
287	qswst_1(nysg:nyng,nxlg:nxrg) )
288
289	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
290	ALLOCATE( qsws_2(nysg:nyng,nxlg:nxrg), &
291	qswst_2(nysg:nyng,nxlg:nxrg) )
292	ENDIF
293	!
294	!-- 3D-humidity/scalar arrays
295	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
296	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
297	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
298
299	!
300	!-- 3D-arrays needed for humidity only
301	IF ( humidity ) THEN
302	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
303
304	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
305	ALLOCATE( vpt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
306	ENDIF
307
308	IF ( cloud_physics ) THEN
309	!
310	!-- Liquid water content
311	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
312	!
313	!-- Precipitation amount and rate (only needed if output is switched)
314	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
315	precipitation_rate(nysg:nyng,nxlg:nxrg) )
316	ENDIF
317
318	IF ( cloud_droplets ) THEN
319	!
320	!-- Liquid water content, change in liquid water content,
321	!-- real volume of particles (with weighting), volume of particles
322	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
323	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
324	ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
325	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
326	ENDIF
327
328	ENDIF
329
330	ENDIF
331
332	IF ( ocean ) THEN
333	ALLOCATE( saswsb_1(nysg:nyng,nxlg:nxrg), &
334	saswst_1(nysg:nyng,nxlg:nxrg) )
335	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
336	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
337	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
338	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
339	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
340	prho => prho_1
341	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
342	! density to be apointer
343	IF ( humidity_remote ) THEN
344	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
345	qswst_remote = 0.0
346	ENDIF
347	ENDIF
348
349	!
350	!-- 3D-array for storing the dissipation, needed for calculating the sgs
351	!-- particle velocities
352	IF ( use_sgs_for_particles .OR. wang_kernel ) THEN
353	ALLOCATE ( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
354	ELSE
355	ALLOCATE ( diss(2,2,2) ) ! required because diss is used as a
356	! formal parameter
357	ENDIF
358
359	IF ( dt_dosp /= 9999999.9 ) THEN
360	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
361	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
362	spectrum_x = 0.0
363	spectrum_y = 0.0
364	ENDIF
365
366	!
367	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
368	IF ( plant_canopy ) THEN
369	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
370	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
371	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
372	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
373	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
374
375	IF ( passive_scalar ) THEN
376	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
377	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
378	ENDIF
379
380	IF ( cthf /= 0.0 ) THEN
381	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
382	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
383	ENDIF
384
385	ENDIF
386
387	!
388	!-- 4D-array for storing the Rif-values at vertical walls
389	IF ( topography /= 'flat' ) THEN
390	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
391	rif_wall = 0.0
392	ENDIF
393
394	!
395	!-- Arrays to store velocity data from t-dt and the phase speeds which
396	!-- are needed for radiation boundary conditions
397	IF ( outflow_l ) THEN
398	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
399	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
400	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
401	ENDIF
402	IF ( outflow_r ) THEN
403	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
404	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
405	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
406	ENDIF
407	IF ( outflow_l .OR. outflow_r ) THEN
408	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
409	c_w(nzb:nzt+1,nysg:nyng) )
410	ENDIF
411	IF ( outflow_s ) THEN
412	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
413	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
414	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
415	ENDIF
416	IF ( outflow_n ) THEN
417	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
418	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
419	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
420	ENDIF
421	IF ( outflow_s .OR. outflow_n ) THEN
422	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
423	c_w(nzb:nzt+1,nxlg:nxrg) )
424	ENDIF
425	IF ( outflow_l .OR. outflow_r .OR. outflow_s .OR. outflow_n ) THEN
426	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
427	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
428	ENDIF
429
430
431	!
432	!-- Initial assignment of the pointers
433	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
434
435	rif_m => rif_1; rif => rif_2
436	shf_m => shf_1; shf => shf_2
437	tswst_m => tswst_1; tswst => tswst_2
438	usws_m => usws_1; usws => usws_2
439	uswst_m => uswst_1; uswst => uswst_2
440	vsws_m => vsws_1; vsws => vsws_2
441	vswst_m => vswst_1; vswst => vswst_2
442	e_m => e_1; e => e_2; e_p => e_3; te_m => e_3
443	kh_m => kh_1; kh => kh_2
444	km_m => km_1; km => km_2
445	pt_m => pt_1; pt => pt_2; pt_p => pt_3; tpt_m => pt_3
446	u_m => u_1; u => u_2; u_p => u_3; tu_m => u_3
447	v_m => v_1; v => v_2; v_p => v_3; tv_m => v_3
448	w_m => w_1; w => w_2; w_p => w_3; tw_m => w_3
449
450	IF ( humidity .OR. passive_scalar ) THEN
451	qsws_m => qsws_1; qsws => qsws_2
452	qswst_m => qswst_1; qswst => qswst_2
453	q_m => q_1; q => q_2; q_p => q_3; tq_m => q_3
454	IF ( humidity ) vpt_m => vpt_1; vpt => vpt_2
455	IF ( cloud_physics ) ql => ql_1
456	IF ( cloud_droplets ) THEN
457	ql => ql_1
458	ql_c => ql_2
459	ENDIF
460	ENDIF
461
462	ELSE
463
464	rif => rif_1
465	shf => shf_1
466	tswst => tswst_1
467	usws => usws_1
468	uswst => uswst_1
469	vsws => vsws_1
470	vswst => vswst_1
471	e => e_1; e_p => e_2; te_m => e_3; e_m => e_3
472	kh => kh_1
473	km => km_1
474	pt => pt_1; pt_p => pt_2; tpt_m => pt_3; pt_m => pt_3
475	u => u_1; u_p => u_2; tu_m => u_3; u_m => u_3
476	v => v_1; v_p => v_2; tv_m => v_3; v_m => v_3
477	w => w_1; w_p => w_2; tw_m => w_3; w_m => w_3
478
479	IF ( humidity .OR. passive_scalar ) THEN
480	qsws => qsws_1
481	qswst => qswst_1
482	q => q_1; q_p => q_2; tq_m => q_3; q_m => q_3
483	IF ( humidity ) vpt => vpt_1
484	IF ( cloud_physics ) ql => ql_1
485	IF ( cloud_droplets ) THEN
486	ql => ql_1
487	ql_c => ql_2
488	ENDIF
489	ENDIF
490
491	IF ( ocean ) THEN
492	saswsb => saswsb_1
493	saswst => saswst_1
494	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
495	ENDIF
496
497	ENDIF
498
499	!
500	!-- Allocate arrays containing the RK coefficient for calculation of
501	!-- perturbation pressure and turbulent fluxes. At this point values are
502	!-- set for pressure calculation during initialization (where no timestep
503	!-- is done). Further below the values needed within the timestep scheme
504	!-- will be set.
505	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
506	weight_pres(1:intermediate_timestep_count_max) )
507	weight_substep = 1.0
508	weight_pres = 1.0
509	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
510
511	!
512	!-- Initialize model variables
513	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
514	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
515	!
516	!-- First model run of a possible job queue.
517	!-- Initial profiles of the variables must be computes.
518	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
519	!
520	!-- Use solutions of the 1D model as initial profiles,
521	!-- start 1D model
522	CALL init_1d_model
523	!
524	!-- Transfer initial profiles to the arrays of the 3D model
525	DO i = nxlg, nxrg
526	DO j = nysg, nyng
527	e(:,j,i) = e1d
528	kh(:,j,i) = kh1d
529	km(:,j,i) = km1d
530	pt(:,j,i) = pt_init
531	u(:,j,i) = u1d
532	v(:,j,i) = v1d
533	ENDDO
534	ENDDO
535
536	IF ( humidity .OR. passive_scalar ) THEN
537	DO i = nxlg, nxrg
538	DO j = nysg, nyng
539	q(:,j,i) = q_init
540	ENDDO
541	ENDDO
542	ENDIF
543
544	IF ( .NOT. constant_diffusion ) THEN
545	DO i = nxlg, nxrg
546	DO j = nysg, nyng
547	e(:,j,i) = e1d
548	ENDDO
549	ENDDO
550	!
551	!-- Store initial profiles for output purposes etc.
552	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
553
554	IF ( prandtl_layer ) THEN
555	rif = rif1d(nzb+1)
556	ts = 0.0 ! could actually be computed more accurately in the
557	! 1D model. Update when opportunity arises.
558	us = us1d
559	usws = usws1d
560	vsws = vsws1d
561	ELSE
562	ts = 0.0 ! must be set, because used in
563	rif = 0.0 ! flowste
564	us = 0.0
565	usws = 0.0
566	vsws = 0.0
567	ENDIF
568
569	ELSE
570	e = 0.0 ! must be set, because used in
571	rif = 0.0 ! flowste
572	ts = 0.0
573	us = 0.0
574	usws = 0.0
575	vsws = 0.0
576	ENDIF
577	uswst = top_momentumflux_u
578	vswst = top_momentumflux_v
579
580	!
581	!-- In every case qs = 0.0 (see also pt)
582	!-- This could actually be computed more accurately in the 1D model.
583	!-- Update when opportunity arises!
584	IF ( humidity .OR. passive_scalar ) qs = 0.0
585
586	!
587	!-- inside buildings set velocities back to zero
588	IF ( topography /= 'flat' ) THEN
589	DO i = nxl-1, nxr+1
590	DO j = nys-1, nyn+1
591	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
592	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
593	ENDDO
594	ENDDO
595
596	!
597	!-- WARNING: The extra boundary conditions set after running the
598	!-- ------- 1D model impose an error on the divergence one layer
599	!-- below the topography; need to correct later
600	!-- ATTENTION: Provisional correction for Piacsek & Williams
601	!-- --------- advection scheme: keep u and v zero one layer below
602	!-- the topography.
603	!
604	!-- Following was removed, because mirror boundary condition are
605	!-- replaced by dirichlet boundary conditions
606	!
607	! IF ( ibc_uv_b == 0 ) THEN
608	!!
609	!!-- Satisfying the Dirichlet condition with an extra layer below
610	!!-- the surface where the u and v component change their sign.
611	! DO i = nxl-1, nxr+1
612	! DO j = nys-1, nyn+1
613	! IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = -u(1,j,i)
614	! IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = -v(1,j,i)
615	! ENDDO
616	! ENDDO
617	!
618	! ELSE
619	IF ( ibc_uv_b == 1 ) THEN
620	!
621	!-- Neumann condition
622	DO i = nxl-1, nxr+1
623	DO j = nys-1, nyn+1
624	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
625	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
626	ENDDO
627	ENDDO
628
629	ENDIF
630
631	ENDIF
632
633	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
634	THEN
635	!
636	!-- Use constructed initial profiles (velocity constant with height,
637	!-- temperature profile with constant gradient)
638	DO i = nxlg, nxrg
639	DO j = nysg, nyng
640	pt(:,j,i) = pt_init
641	u(:,j,i) = u_init
642	v(:,j,i) = v_init
643	ENDDO
644	ENDDO
645
646	!
647	!-- Set initial horizontal velocities at the lowest computational grid
648	!-- levels to zero in order to avoid too small time steps caused by the
649	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
650	!-- in the limiting formula!). The original values are stored to be later
651	!-- used for volume flow control.
652	DO i = nxlg, nxrg
653	DO j = nysg, nyng
654	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
655	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
656	ENDDO
657	ENDDO
658
659	IF ( humidity .OR. passive_scalar ) THEN
660	DO i = nxlg, nxrg
661	DO j = nysg, nyng
662	q(:,j,i) = q_init
663	ENDDO
664	ENDDO
665	ENDIF
666
667	IF ( ocean ) THEN
668	DO i = nxlg, nxrg
669	DO j = nysg, nyng
670	sa(:,j,i) = sa_init
671	ENDDO
672	ENDDO
673	ENDIF
674
675	IF ( constant_diffusion ) THEN
676	km = km_constant
677	kh = km / prandtl_number
678	e = 0.0
679	ELSEIF ( e_init > 0.0 ) THEN
680	DO k = nzb+1, nzt
681	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
682	ENDDO
683	km(nzb,:,:) = km(nzb+1,:,:)
684	km(nzt+1,:,:) = km(nzt,:,:)
685	kh = km / prandtl_number
686	e = e_init
687	ELSE
688	IF ( .NOT. ocean ) THEN
689	kh = 0.01 ! there must exist an initial diffusion, because
690	km = 0.01 ! otherwise no TKE would be produced by the
691	! production terms, as long as not yet
692	! e = (u/cm)*2 at k=nzb+1
693	ELSE
694	kh = 0.00001
695	km = 0.00001
696	ENDIF
697	e = 0.0
698	ENDIF
699	rif = 0.0
700	ts = 0.0
701	us = 0.0
702	usws = 0.0
703	uswst = top_momentumflux_u
704	vsws = 0.0
705	vswst = top_momentumflux_v
706	IF ( humidity .OR. passive_scalar ) qs = 0.0
707
708	!
709	!-- Compute initial temperature field and other constants used in case
710	!-- of a sloping surface
711	IF ( sloping_surface ) CALL init_slope
712
713	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
714	THEN
715	!
716	!-- Initialization will completely be done by the user
717	CALL user_init_3d_model
718
719	ENDIF
720	!
721	!-- Bottom boundary
722	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
723	u(nzb,:,:) = 0.0
724	v(nzb,:,:) = 0.0
725	ENDIF
726
727	!
728	!-- Apply channel flow boundary condition
729	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
730	u(nzt+1,:,:) = 0.0
731	v(nzt+1,:,:) = 0.0
732	ENDIF
733
734	!
735	!-- Calculate virtual potential temperature
736	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
737
738	!
739	!-- Store initial profiles for output purposes etc.
740	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
741	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
742	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
743	hom(nzb,1,5,:) = 0.0
744	hom(nzb,1,6,:) = 0.0
745	ENDIF
746	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
747	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
748	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
749
750	IF ( ocean ) THEN
751	!
752	!-- Store initial salinity profile
753	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
754	ENDIF
755
756	IF ( humidity ) THEN
757	!
758	!-- Store initial profile of total water content, virtual potential
759	!-- temperature
760	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
761	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
762	IF ( cloud_physics .OR. cloud_droplets ) THEN
763	!
764	!-- Store initial profile of specific humidity and potential
765	!-- temperature
766	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
767	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
768	ENDIF
769	ENDIF
770
771	IF ( passive_scalar ) THEN
772	!
773	!-- Store initial scalar profile
774	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
775	ENDIF
776
777	!
778	!-- Initialize fluxes at bottom surface
779	IF ( use_surface_fluxes ) THEN
780
781	IF ( constant_heatflux ) THEN
782	!
783	!-- Heat flux is prescribed
784	IF ( random_heatflux ) THEN
785	CALL disturb_heatflux
786	ELSE
787	shf = surface_heatflux
788	!
789	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
790	IF ( TRIM( topography ) /= 'flat' ) THEN
791	DO i = nxlg, nxrg
792	DO j = nysg, nyng
793	IF ( nzb_s_inner(j,i) /= 0 ) THEN
794	shf(j,i) = wall_heatflux(0)
795	ENDIF
796	ENDDO
797	ENDDO
798	ENDIF
799	ENDIF
800	IF ( ASSOCIATED( shf_m ) ) shf_m = shf
801	ENDIF
802
803	!
804	!-- Determine the near-surface water flux
805	IF ( humidity .OR. passive_scalar ) THEN
806	IF ( constant_waterflux ) THEN
807	qsws = surface_waterflux
808	!
809	!-- Over topography surface_waterflux is replaced by
810	!-- wall_humidityflux(0)
811	IF ( TRIM( topography ) /= 'flat' ) THEN
812	wall_qflux = wall_humidityflux
813	DO i = nxlg, nxrg
814	DO j = nysg, nyng
815	IF ( nzb_s_inner(j,i) /= 0 ) THEN
816	qsws(j,i) = wall_qflux(0)
817	ENDIF
818	ENDDO
819	ENDDO
820	ENDIF
821	IF ( ASSOCIATED( qsws_m ) ) qsws_m = qsws
822	ENDIF
823	ENDIF
824
825	ENDIF
826
827	!
828	!-- Initialize fluxes at top surface
829	!-- Currently, only the heatflux and salinity flux can be prescribed.
830	!-- The latent flux is zero in this case!
831	IF ( use_top_fluxes ) THEN
832
833	IF ( constant_top_heatflux ) THEN
834	!
835	!-- Heat flux is prescribed
836	tswst = top_heatflux
837	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
838
839	IF ( humidity .OR. passive_scalar ) THEN
840	qswst = 0.0
841	IF ( ASSOCIATED( qswst_m ) ) qswst_m = qswst
842	ENDIF
843
844	IF ( ocean ) THEN
845	saswsb = bottom_salinityflux
846	saswst = top_salinityflux
847	ENDIF
848	ENDIF
849
850	!
851	!-- Initialization in case of a coupled model run
852	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
853	tswst = 0.0
854	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
855	ENDIF
856
857	ENDIF
858
859	!
860	!-- Initialize Prandtl layer quantities
861	IF ( prandtl_layer ) THEN
862
863	z0 = roughness_length
864	z0h = z0h_factor * z0
865
866	IF ( .NOT. constant_heatflux ) THEN
867	!
868	!-- Surface temperature is prescribed. Here the heat flux cannot be
869	!-- simply estimated, because therefore rif, u* and theta* would have
870	!-- to be computed by iteration. This is why the heat flux is assumed
871	!-- to be zero before the first time step. It approaches its correct
872	!-- value in the course of the first few time steps.
873	shf = 0.0
874	IF ( ASSOCIATED( shf_m ) ) shf_m = 0.0
875	ENDIF
876
877	IF ( humidity .OR. passive_scalar ) THEN
878	IF ( .NOT. constant_waterflux ) THEN
879	qsws = 0.0
880	IF ( ASSOCIATED( qsws_m ) ) qsws_m = 0.0
881	ENDIF
882	ENDIF
883
884	ENDIF
885
886
887	!
888	!-- For the moment, vertical velocity is zero
889	w = 0.0
890
891	!
892	!-- Initialize array sums (must be defined in first call of pres)
893	sums = 0.0
894
895	!
896	!-- In case of iterative solvers, p must get an initial value
897	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0
898
899	!
900	!-- Treating cloud physics, liquid water content and precipitation amount
901	!-- are zero at beginning of the simulation
902	IF ( cloud_physics ) THEN
903	ql = 0.0
904	IF ( precipitation ) precipitation_amount = 0.0
905	ENDIF
906	!
907	!-- Impose vortex with vertical axis on the initial velocity profile
908	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
909	CALL init_rankine
910	ENDIF
911
912	!
913	!-- Impose temperature anomaly (advection test only)
914	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
915	CALL init_pt_anomaly
916	ENDIF
917
918	!
919	!-- If required, change the surface temperature at the start of the 3D run
920	IF ( pt_surface_initial_change /= 0.0 ) THEN
921	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
922	ENDIF
923
924	!
925	!-- If required, change the surface humidity/scalar at the start of the 3D
926	!-- run
927	IF ( ( humidity .OR. passive_scalar ) .AND. &
928	q_surface_initial_change /= 0.0 ) THEN
929	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
930	ENDIF
931
932	!
933	!-- Initialize the random number generator (from numerical recipes)
934	CALL random_function_ini
935
936	!
937	!-- Initialize old and new time levels.
938	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
939	e_m = e; pt_m = pt; u_m = u; v_m = v; w_m = w; kh_m = kh; km_m = km
940	ELSE
941	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
942	ENDIF
943	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
944
945	IF ( humidity .OR. passive_scalar ) THEN
946	IF ( ASSOCIATED( q_m ) ) q_m = q
947	IF ( timestep_scheme(1:5) == 'runge' ) tq_m = 0.0
948	q_p = q
949	IF ( humidity .AND. ASSOCIATED( vpt_m ) ) vpt_m = vpt
950	ENDIF
951
952	IF ( ocean ) THEN
953	tsa_m = 0.0
954	sa_p = sa
955	ENDIF
956
957
958	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
959	TRIM( initializing_actions ) == 'cyclic_fill' ) &
960	THEN
961	!
962	!-- When reading data for cyclic fill of 3D prerun data files, read
963	!-- some of the global variables from the restart file which are required
964	!-- for initializing the inflow
965	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
966
967	DO i = 0, io_blocks-1
968	IF ( i == io_group ) THEN
969	CALL read_parts_of_var_list
970	CALL close_file( 13 )
971	ENDIF
972	#if defined( __parallel )
973	CALL MPI_BARRIER( comm2d, ierr )
974	#endif
975	ENDDO
976
977	ENDIF
978
979	!
980	!-- Read binary data from restart file
981	DO i = 0, io_blocks-1
982	IF ( i == io_group ) THEN
983	CALL read_3d_binary
984	ENDIF
985	#if defined( __parallel )
986	CALL MPI_BARRIER( comm2d, ierr )
987	#endif
988	ENDDO
989
990	!
991	!-- Initialization of the turbulence recycling method
992	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
993	turbulent_inflow ) THEN
994	!
995	!-- First store the profiles to be used at the inflow.
996	!-- These profiles are the (temporally) and horizontally averaged vertical
997	!-- profiles from the prerun. Alternatively, prescribed profiles
998	!-- for u,v-components can be used.
999	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
1000
1001	IF ( use_prescribed_profile_data ) THEN
1002	mean_inflow_profiles(:,1) = u_init ! u
1003	mean_inflow_profiles(:,2) = v_init ! v
1004	ELSE
1005	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
1006	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
1007	ENDIF
1008	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
1009	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
1010
1011	!
1012	!-- If necessary, adjust the horizontal flow field to the prescribed
1013	!-- profiles
1014	IF ( use_prescribed_profile_data ) THEN
1015	DO i = nxlg, nxrg
1016	DO j = nysg, nyng
1017	DO k = nzb, nzt+1
1018	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
1019	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
1020	ENDDO
1021	ENDDO
1022	ENDDO
1023	ENDIF
1024
1025	!
1026	!-- Use these mean profiles at the inflow (provided that Dirichlet
1027	!-- conditions are used)
1028	IF ( inflow_l ) THEN
1029	DO j = nysg, nyng
1030	DO k = nzb, nzt+1
1031	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
1032	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
1033	w(k,j,nxlg:-1) = 0.0
1034	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
1035	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
1036	ENDDO
1037	ENDDO
1038	ENDIF
1039
1040	!
1041	!-- Calculate the damping factors to be used at the inflow. For a
1042	!-- turbulent inflow the turbulent fluctuations have to be limited
1043	!-- vertically because otherwise the turbulent inflow layer will grow
1044	!-- in time.
1045	IF ( inflow_damping_height == 9999999.9 ) THEN
1046	!
1047	!-- Default: use the inversion height calculated by the prerun; if
1048	!-- this is zero, inflow_damping_height must be explicitly
1049	!-- specified.
1050	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0 ) THEN
1051	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1052	ELSE
1053	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1054	'explicitly specified because&the inversion height ', &
1055	'calculated by the prerun is zero.'
1056	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1057	ENDIF
1058
1059	ENDIF
1060
1061	IF ( inflow_damping_width == 9999999.9 ) THEN
1062	!
1063	!-- Default for the transition range: one tenth of the undamped
1064	!-- layer
1065	inflow_damping_width = 0.1 * inflow_damping_height
1066
1067	ENDIF
1068
1069	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1070
1071	DO k = nzb, nzt+1
1072
1073	IF ( zu(k) <= inflow_damping_height ) THEN
1074	inflow_damping_factor(k) = 1.0
1075	ELSEIF ( zu(k) <= inflow_damping_height + &
1076	inflow_damping_width ) THEN
1077	inflow_damping_factor(k) = 1.0 - &
1078	( zu(k) - inflow_damping_height ) / &
1079	inflow_damping_width
1080	ELSE
1081	inflow_damping_factor(k) = 0.0
1082	ENDIF
1083
1084	ENDDO
1085
1086	ENDIF
1087
1088	!
1089	!-- Inside buildings set velocities and TKE back to zero
1090	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1091	topography /= 'flat' ) THEN
1092	!
1093	!-- Inside buildings set velocities and TKE back to zero.
1094	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1095	!-- maybe revise later.
1096	IF ( timestep_scheme(1:5) == 'runge' ) THEN
1097	DO i = nxlg, nxrg
1098	DO j = nysg, nyng
1099	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1100	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1101	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1102	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1103	u_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1104	v_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1105	w_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1106	e_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1107	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1108	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1109	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1110	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1111	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1112	ENDDO
1113	ENDDO
1114	ELSE
1115	DO i = nxlg, nxrg
1116	DO j = nysg, nyng
1117	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1118	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1119	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1120	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1121	u_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1122	v_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1123	w_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1124	e_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1125	u_p(nzb:nzb_u_inner(j,i),j,i) = 0.0
1126	v_p(nzb:nzb_v_inner(j,i),j,i) = 0.0
1127	w_p(nzb:nzb_w_inner(j,i),j,i) = 0.0
1128	e_p(nzb:nzb_w_inner(j,i),j,i) = 0.0
1129	ENDDO
1130	ENDDO
1131	ENDIF
1132
1133	ENDIF
1134
1135	!
1136	!-- Calculate initial temperature field and other constants used in case
1137	!-- of a sloping surface
1138	IF ( sloping_surface ) CALL init_slope
1139
1140	!
1141	!-- Initialize new time levels (only done in order to set boundary values
1142	!-- including ghost points)
1143	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1144	IF ( humidity .OR. passive_scalar ) q_p = q
1145	IF ( ocean ) sa_p = sa
1146
1147	!
1148	!-- Allthough tendency arrays are set in prognostic_equations, they have
1149	!-- have to be predefined here because they are used (but multiplied with 0)
1150	!-- there before they are set.
1151	IF ( timestep_scheme(1:5) == 'runge' ) THEN
1152	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1153	IF ( humidity .OR. passive_scalar ) tq_m = 0.0
1154	IF ( ocean ) tsa_m = 0.0
1155	ENDIF
1156
1157	ELSE
1158	!
1159	!-- Actually this part of the programm should not be reached
1160	message_string = 'unknown initializing problem'
1161	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1162	ENDIF
1163
1164
1165	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1166	!
1167	!-- Initialize old timelevels needed for radiation boundary conditions
1168	IF ( outflow_l ) THEN
1169	u_m_l(:,:,:) = u(:,:,1:2)
1170	v_m_l(:,:,:) = v(:,:,0:1)
1171	w_m_l(:,:,:) = w(:,:,0:1)
1172	ENDIF
1173	IF ( outflow_r ) THEN
1174	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1175	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1176	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1177	ENDIF
1178	IF ( outflow_s ) THEN
1179	u_m_s(:,:,:) = u(:,0:1,:)
1180	v_m_s(:,:,:) = v(:,1:2,:)
1181	w_m_s(:,:,:) = w(:,0:1,:)
1182	ENDIF
1183	IF ( outflow_n ) THEN
1184	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1185	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1186	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1187	ENDIF
1188
1189	ENDIF
1190
1191	!
1192	!-- Calculate the initial volume flow at the right and north boundary
1193	IF ( conserve_volume_flow ) THEN
1194
1195	IF ( use_prescribed_profile_data ) THEN
1196
1197	volume_flow_initial_l = 0.0
1198	volume_flow_area_l = 0.0
1199
1200	IF ( nxr == nx ) THEN
1201	DO j = nys, nyn
1202	DO k = nzb_2d(j,nx)+1, nzt
1203	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1204	u_init(k) * dzw(k)
1205	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1206	ENDDO
1207	ENDDO
1208	ENDIF
1209
1210	IF ( nyn == ny ) THEN
1211	DO i = nxl, nxr
1212	DO k = nzb_2d(ny,i)+1, nzt
1213	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1214	v_init(k) * dzw(k)
1215	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1216	ENDDO
1217	ENDDO
1218	ENDIF
1219
1220	#if defined( __parallel )
1221	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1222	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1223	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1224	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1225
1226	#else
1227	volume_flow_initial = volume_flow_initial_l
1228	volume_flow_area = volume_flow_area_l
1229	#endif
1230
1231	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1232
1233	volume_flow_initial_l = 0.0
1234	volume_flow_area_l = 0.0
1235
1236	IF ( nxr == nx ) THEN
1237	DO j = nys, nyn
1238	DO k = nzb_2d(j,nx)+1, nzt
1239	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1240	hom_sum(k,1,0) * dzw(k)
1241	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1242	ENDDO
1243	ENDDO
1244	ENDIF
1245
1246	IF ( nyn == ny ) THEN
1247	DO i = nxl, nxr
1248	DO k = nzb_2d(ny,i)+1, nzt
1249	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1250	hom_sum(k,2,0) * dzw(k)
1251	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1252	ENDDO
1253	ENDDO
1254	ENDIF
1255
1256	#if defined( __parallel )
1257	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1258	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1259	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1260	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1261
1262	#else
1263	volume_flow_initial = volume_flow_initial_l
1264	volume_flow_area = volume_flow_area_l
1265	#endif
1266
1267	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1268
1269	volume_flow_initial_l = 0.0
1270	volume_flow_area_l = 0.0
1271
1272	IF ( nxr == nx ) THEN
1273	DO j = nys, nyn
1274	DO k = nzb_2d(j,nx)+1, nzt
1275	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1276	u(k,j,nx) * dzw(k)
1277	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1278	ENDDO
1279	ENDDO
1280	ENDIF
1281
1282	IF ( nyn == ny ) THEN
1283	DO i = nxl, nxr
1284	DO k = nzb_2d(ny,i)+1, nzt
1285	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1286	v(k,ny,i) * dzw(k)
1287	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1288	ENDDO
1289	ENDDO
1290	ENDIF
1291
1292	#if defined( __parallel )
1293	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1294	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1295	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1296	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1297
1298	#else
1299	volume_flow_initial = volume_flow_initial_l
1300	volume_flow_area = volume_flow_area_l
1301	#endif
1302
1303	ENDIF
1304
1305	!
1306	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1307	!-- from u\|v_bulk instead
1308	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1309	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1310	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1311	ENDIF
1312
1313	ENDIF
1314
1315	!
1316	!-- Initialize quantities for special advections schemes
1317	CALL init_advec
1318
1319	!
1320	!-- Impose random perturbation on the horizontal velocity field and then
1321	!-- remove the divergences from the velocity field at the initial stage
1322	IF ( create_disturbances .AND. &
1323	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1324	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1325
1326	CALL disturb_field( nzb_u_inner, tend, u )
1327	CALL disturb_field( nzb_v_inner, tend, v )
1328	n_sor = nsor_ini
1329	CALL pres
1330	n_sor = nsor
1331	ENDIF
1332
1333	!
1334	!-- Initialization of the leaf area density
1335	IF ( plant_canopy ) THEN
1336
1337	SELECT CASE ( TRIM( canopy_mode ) )
1338
1339	CASE( 'block' )
1340
1341	DO i = nxlg, nxrg
1342	DO j = nysg, nyng
1343	lad_s(:,j,i) = lad(:)
1344	cdc(:,j,i) = drag_coefficient
1345	IF ( passive_scalar ) THEN
1346	sls(:,j,i) = leaf_surface_concentration
1347	sec(:,j,i) = scalar_exchange_coefficient
1348	ENDIF
1349	ENDDO
1350	ENDDO
1351
1352	CASE DEFAULT
1353
1354	!
1355	!-- The DEFAULT case is reached either if the parameter
1356	!-- canopy mode contains a wrong character string or if the
1357	!-- user has coded a special case in the user interface.
1358	!-- There, the subroutine user_init_plant_canopy checks
1359	!-- which of these two conditions applies.
1360	CALL user_init_plant_canopy
1361
1362	END SELECT
1363
1364	CALL exchange_horiz( lad_s, nbgp )
1365	CALL exchange_horiz( cdc, nbgp )
1366
1367	IF ( passive_scalar ) THEN
1368	CALL exchange_horiz( sls, nbgp )
1369	CALL exchange_horiz( sec, nbgp )
1370	ENDIF
1371
1372	!
1373	!-- Sharp boundaries of the plant canopy in horizontal directions
1374	!-- In vertical direction the interpolation is retained, as the leaf
1375	!-- area density is initialised by prescribing a vertical profile
1376	!-- consisting of piecewise linear segments. The upper boundary
1377	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1378
1379	DO i = nxl, nxr
1380	DO j = nys, nyn
1381	DO k = nzb, nzt+1
1382	IF ( lad_s(k,j,i) > 0.0 ) THEN
1383	lad_u(k,j,i) = lad_s(k,j,i)
1384	lad_u(k,j,i+1) = lad_s(k,j,i)
1385	lad_v(k,j,i) = lad_s(k,j,i)
1386	lad_v(k,j+1,i) = lad_s(k,j,i)
1387	ENDIF
1388	ENDDO
1389	DO k = nzb, nzt
1390	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1391	ENDDO
1392	ENDDO
1393	ENDDO
1394
1395	lad_w(pch_index,:,:) = 0.0
1396	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1397
1398	CALL exchange_horiz( lad_u, nbgp )
1399	CALL exchange_horiz( lad_v, nbgp )
1400	CALL exchange_horiz( lad_w, nbgp )
1401
1402	!
1403	!-- Initialisation of the canopy heat source distribution
1404	IF ( cthf /= 0.0 ) THEN
1405	!
1406	!-- Piecewise evaluation of the leaf area index by
1407	!-- integration of the leaf area density
1408	lai(:,:,:) = 0.0
1409	DO i = nxlg, nxrg
1410	DO j = nysg, nyng
1411	DO k = pch_index-1, 0, -1
1412	lai(k,j,i) = lai(k+1,j,i) + &
1413	( 0.5 * ( lad_w(k+1,j,i) + &
1414	lad_s(k+1,j,i) ) * &
1415	( zw(k+1) - zu(k+1) ) ) + &
1416	( 0.5 * ( lad_w(k,j,i) + &
1417	lad_s(k+1,j,i) ) * &
1418	( zu(k+1) - zw(k) ) )
1419	ENDDO
1420	ENDDO
1421	ENDDO
1422
1423	!
1424	!-- Evaluation of the upward kinematic vertical heat flux within the
1425	!-- canopy
1426	DO i = nxlg, nxrg
1427	DO j = nysg, nyng
1428	DO k = 0, pch_index
1429	canopy_heat_flux(k,j,i) = cthf * &
1430	exp( -0.6 * lai(k,j,i) )
1431	ENDDO
1432	ENDDO
1433	ENDDO
1434
1435	!
1436	!-- The near surface heat flux is derived from the heat flux
1437	!-- distribution within the canopy
1438	shf(:,:) = canopy_heat_flux(0,:,:)
1439
1440	IF ( ASSOCIATED( shf_m ) ) shf_m = shf
1441
1442	ENDIF
1443
1444	ENDIF
1445
1446	!
1447	!-- If required, initialize dvrp-software
1448	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
1449
1450	IF ( ocean ) THEN
1451	!
1452	!-- Initialize quantities needed for the ocean model
1453	CALL init_ocean
1454
1455	ELSE
1456	!
1457	!-- Initialize quantities for handling cloud physics
1458	!-- This routine must be called before lpm_init, because
1459	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1460	!-- lpm_init) is not defined.
1461	CALL init_cloud_physics
1462	ENDIF
1463
1464	!
1465	!-- If required, initialize particles
1466	IF ( particle_advection ) CALL lpm_init
1467
1468	!
1469	!-- Initialize the ws-scheme.
1470	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1471
1472	!
1473	!-- Setting weighting factors for calculation of perturbation pressure
1474	!-- and turbulent quantities from the RK substeps
1475	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1476
1477	weight_substep(1) = 1./6.
1478	weight_substep(2) = 3./10.
1479	weight_substep(3) = 8./15.
1480
1481	weight_pres(1) = 1./3.
1482	weight_pres(2) = 5./12.
1483	weight_pres(3) = 1./4.
1484
1485	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1486
1487	weight_substep(1) = 1./2.
1488	weight_substep(2) = 1./2.
1489
1490	weight_pres(1) = 1./2.
1491	weight_pres(2) = 1./2.
1492
1493	ELSE ! for Euler- and leapfrog-method
1494
1495	weight_substep(1) = 1.0
1496	weight_pres(1) = 1.0
1497
1498	ENDIF
1499
1500	!
1501	!-- Initialize Rayleigh damping factors
1502	rdf = 0.0
1503	rdf_sc = 0.0
1504	IF ( rayleigh_damping_factor /= 0.0 ) THEN
1505	IF ( .NOT. ocean ) THEN
1506	DO k = nzb+1, nzt
1507	IF ( zu(k) >= rayleigh_damping_height ) THEN
1508	rdf(k) = rayleigh_damping_factor * &
1509	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
1510	/ ( zu(nzt) - rayleigh_damping_height ) )&
1511	)**2
1512	ENDIF
1513	ENDDO
1514	ELSE
1515	DO k = nzt, nzb+1, -1
1516	IF ( zu(k) <= rayleigh_damping_height ) THEN
1517	rdf(k) = rayleigh_damping_factor * &
1518	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
1519	/ ( rayleigh_damping_height - zu(nzb+1)))&
1520	)**2
1521	ENDIF
1522	ENDDO
1523	ENDIF
1524	ENDIF
1525	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
1526
1527	!
1528	!-- Initialize the starting level and the vertical smoothing factor used for
1529	!-- the external pressure gradient
1530	dp_smooth_factor = 1.0
1531	IF ( dp_external ) THEN
1532	!
1533	!-- Set the starting level dp_level_ind_b only if it has not been set before
1534	!-- (e.g. in init_grid).
1535	IF ( dp_level_ind_b == 0 ) THEN
1536	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1537	dp_level_ind_b = ind_array(1) - 1 + nzb
1538	! MINLOC uses lower array bound 1
1539	ENDIF
1540	IF ( dp_smooth ) THEN
1541	dp_smooth_factor(:dp_level_ind_b) = 0.0
1542	DO k = dp_level_ind_b+1, nzt
1543	dp_smooth_factor(k) = 0.5 * ( 1.0 + SIN( pi * &
1544	( REAL( k - dp_level_ind_b ) / &
1545	REAL( nzt - dp_level_ind_b ) - 0.5 ) ) )
1546	ENDDO
1547	ENDIF
1548	ENDIF
1549
1550	!
1551	!-- Initialize damping zone for the potential temperature in case of
1552	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
1553	!-- at the inflow boundary and decreases to zero at pt_damping_width.
1554	ptdf_x = 0.0
1555	ptdf_y = 0.0
1556	IF ( bc_lr_dirrad .OR. bc_lr_dirneu ) THEN
1557	DO i = nxl, nxr
1558	IF ( ( i * dx ) < pt_damping_width ) THEN
1559	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5 * &
1560	REAL( pt_damping_width - i * dx ) / ( &
1561	REAL( pt_damping_width ) ) ) )**2
1562	ENDIF
1563	ENDDO
1564	ELSEIF ( bc_lr_raddir .OR. bc_lr_neudir ) THEN
1565	DO i = nxl, nxr
1566	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
1567	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5 * &
1568	REAL( ( i - nx ) * dx + pt_damping_width ) / ( &
1569	REAL( pt_damping_width ) ) ) )**2
1570	ENDIF
1571	ENDDO
1572	ELSEIF ( bc_ns_dirrad .OR. bc_ns_dirneu ) THEN
1573	DO j = nys, nyn
1574	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
1575	ptdf_y(j) = pt_damping_factor * ( SIN( pi * 0.5 * &
1576	REAL( ( j - ny ) * dy + pt_damping_width ) / ( &
1577	REAL( pt_damping_width ) ) ) )**2
1578	ENDIF
1579	ENDDO
1580	ELSEIF ( bc_ns_raddir .OR. bc_ns_neudir ) THEN
1581	DO j = nys, nyn
1582	IF ( ( j * dy ) < pt_damping_width ) THEN
1583	ptdf_y(j) = pt_damping_factor * ( SIN( pi * 0.5 * &
1584	REAL( pt_damping_width - j * dy ) / ( &
1585	REAL( pt_damping_width ) ) ) )**2
1586	ENDIF
1587	ENDDO
1588	ENDIF
1589
1590	!
1591	!-- Initialize local summation arrays for routine flow_statistics.
1592	!-- This is necessary because they may not yet have been initialized when they
1593	!-- are called from flow_statistics (or - depending on the chosen model run -
1594	!-- are never initialized)
1595	sums_divnew_l = 0.0
1596	sums_divold_l = 0.0
1597	sums_l_l = 0.0
1598	sums_up_fraction_l = 0.0
1599	sums_wsts_bc_l = 0.0
1600
1601	!
1602	!-- Pre-set masks for regional statistics. Default is the total model domain.
1603	rmask = 1.0
1604
1605	!
1606	!-- User-defined initializing actions. Check afterwards, if maximum number
1607	!-- of allowed timeseries is exceeded
1608	CALL user_init
1609
1610	IF ( dots_num > dots_max ) THEN
1611	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1612	' its maximum of dots_max = ', dots_max, &
1613	' &Please increase dots_max in modules.f90.'
1614	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1615	ENDIF
1616
1617	!
1618	!-- Input binary data file is not needed anymore. This line must be placed
1619	!-- after call of user_init!
1620	CALL close_file( 13 )
1621
1622	!
1623	!-- Compute total sum of active mask grid points
1624	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1625	!-- total domain
1626	!-- ngp_3d: number of grid points of the total domain
1627	ngp_2dh_outer_l = 0
1628	ngp_2dh_outer = 0
1629	ngp_2dh_s_inner_l = 0
1630	ngp_2dh_s_inner = 0
1631	ngp_2dh_l = 0
1632	ngp_2dh = 0
1633	ngp_3d_inner_l = 0.0
1634	ngp_3d_inner = 0
1635	ngp_3d = 0
1636	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1637
1638	DO sr = 0, statistic_regions
1639	DO i = nxl, nxr
1640	DO j = nys, nyn
1641	IF ( rmask(j,i,sr) == 1.0 ) THEN
1642	!
1643	!-- All xy-grid points
1644	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1645	!
1646	!-- xy-grid points above topography
1647	DO k = nzb_s_outer(j,i), nz + 1
1648	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1649	ENDDO
1650	DO k = nzb_s_inner(j,i), nz + 1
1651	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1652	ENDDO
1653	!
1654	!-- All grid points of the total domain above topography
1655	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1656	( nz - nzb_s_inner(j,i) + 2 )
1657	ENDIF
1658	ENDDO
1659	ENDDO
1660	ENDDO
1661
1662	sr = statistic_regions + 1
1663	#if defined( __parallel )
1664	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1665	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1666	comm2d, ierr )
1667	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1668	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1669	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1670	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1671	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1672	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1673	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1674	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1675	MPI_SUM, comm2d, ierr )
1676	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1677	#else
1678	ngp_2dh = ngp_2dh_l
1679	ngp_2dh_outer = ngp_2dh_outer_l
1680	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1681	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1682	#endif
1683
1684	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1685	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1686
1687	!
1688	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1689	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1690	!-- the respective subdomain lie below the surface topography
1691	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1692	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1693	ngp_3d_inner(:) )
1694	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1695
1696	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1697
1698
1699	END SUBROUTINE init_3d_model

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