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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1025

Last change on this file since 1025 was 1025, checked in by letzel, 12 years ago
bugfix: swap indices of mask for ghost boundaries (init_3d_model)
Property svn:keywords set to `Id`
File size: 56.8 KB

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

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