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source: palm/trunk/SOURCE/init_3d_model.f90 @ 1034

Last change on this file since 1034 was 1033, checked in by letzel, 12 years ago
last commit documented
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File size: 57.0 KB

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

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