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source: palm/trunk/SOURCE/init_3d_model.f90 @ 757

Last change on this file since 757 was 732, checked in by raasch, 13 years ago
preliminary bugfix for volume flow control
Property svn:keywords set to `Id`
File size: 56.4 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	! Splitting of parallel I/O
10	! Bugfix: No zero assignments to volume_flow_initial and volume_flow_area in
11	! case of normal restart runs.
12	!
13	! Former revisions:
14	! -----------------
15	! $Id: init_3d_model.f90 732 2011-07-07 13:14:29Z helmke $
16	!
17	! 713 2011-03-30 14:21:21Z suehring
18	! weight_substep and weight_pres are given as fractions.
19	!
20	! 709 2011-03-30 09:31:40Z raasch
21	! formatting adjustments
22	!
23	! 707 2011-03-29 11:39:40Z raasch
24	! p_sub renamed p_loc and allocated depending on the chosen pressure solver,
25	! initial assignments of zero to array p for iterative solvers only,
26	! bc_lr/ns replaced by bc_lr/ns_dirrad/raddir
27	!
28	! 680 2011-02-04 23:16:06Z gryschka
29	! bugfix: volume_flow_control
30	!
31	! 673 2011-01-18 16:19:48Z suehring
32	! weight_substep (moved from advec_ws) and weight_pres added.
33	! Allocate p_sub when using Multigrid or SOR solver.
34	! Call of ws_init moved behind the if requests.
35	!
36	! 667 2010-12-23 12:06:00Z suehring/gryschka
37	! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng in loops and
38	! allocation of arrays. Calls of exchange_horiz are modified.
39	! Call ws_init to initialize arrays needed for calculating statisticas and for
40	! optimization when ws-scheme is used.
41	! Initial volume flow is now calculated by using the variable hom_sum.
42	! Therefore the correction of initial volume flow for non-flat topography
43	! removed (removed u_nzb_p1_for_vfc and v_nzb_p1_for_vfc)
44	! Changed surface boundary conditions for u and v in case of ibc_uv_b == 0 from
45	! mirror to Dirichlet boundary conditions (u=v=0), so that k=nzb is
46	! representative for the height z0.
47	! Bugfix: type conversion of '1' to 64bit for the MAX function (ngp_3d_inner)
48	!
49	! 622 2010-12-10 08:08:13Z raasch
50	! optional barriers included in order to speed up collective operations
51	!
52	! 560 2010-09-09 10:06:09Z weinreis
53	! bugfix: correction of calculating ngp_3d for 64 bit
54	!
55	! 485 2010-02-05 10:57:51Z raasch
56	! calculation of ngp_3d + ngp_3d_inner changed because they have now 64 bit
57	!
58	! 407 2009-12-01 15:01:15Z maronga
59	! var_ts is replaced by dots_max
60	! Enabled passive scalar/humidity wall fluxes for non-flat topography
61	!
62	! 388 2009-09-23 09:40:33Z raasch
63	! Initialization of prho added.
64	! bugfix: correction of initial volume flow for non-flat topography
65	! bugfix: zero initialization of arrays within buildings for 'cyclic_fill'
66	! bugfix: avoid that ngp_2dh_s_inner becomes zero
67	! initializing_actions='read_data_for_recycling' renamed to 'cyclic_fill', now
68	! independent of turbulent_inflow
69	! Output of messages replaced by message handling routine.
70	! Set the starting level and the vertical smoothing factor used for
71	! the external pressure gradient
72	! +conserve_volume_flow_mode: 'default', 'initial_profiles', 'inflow_profile'
73	! and 'bulk_velocity'
74	! If the inversion height calculated by the prerun is zero,
75	! inflow_damping_height must be explicitly specified.
76	!
77	! 181 2008-07-30 07:07:47Z raasch
78	! bugfix: zero assignments to tendency arrays in case of restarts,
79	! further extensions and modifications in the initialisation of the plant
80	! canopy model,
81	! allocation of hom_sum moved to parin, initialization of spectrum_x\|y directly
82	! after allocating theses arrays,
83	! read data for recycling added as new initialization option,
84	! dummy allocation for diss
85	!
86	! 138 2007-11-28 10:03:58Z letzel
87	! New counter ngp_2dh_s_inner.
88	! Allow new case bc_uv_t = 'dirichlet_0' for channel flow.
89	! Corrected calculation of initial volume flow for 'set_1d-model_profiles' and
90	! 'set_constant_profiles' in case of buildings in the reference cross-sections.
91	!
92	! 108 2007-08-24 15:10:38Z letzel
93	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
94	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
95	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
96	! Rayleigh damping for ocean, optionally calculate km and kh from initial
97	! TKE e_init
98	!
99	! 97 2007-06-21 08:23:15Z raasch
100	! Initialization of salinity, call of init_ocean
101	!
102	! 87 2007-05-22 15:46:47Z raasch
103	! var_hom and var_sum renamed pr_palm
104	!
105	! 75 2007-03-22 09:54:05Z raasch
106	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
107	! bugfix for cases with the outflow damping layer extending over more than one
108	! subdomain, moisture renamed humidity,
109	! new initializing action "by_user" calls user_init_3d_model,
110	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
111	! initial velocities at nzb+1 are regarded for volume
112	! flow control in case they have been set zero before (to avoid small timesteps)
113	! -uvmean_outflow, uxrp, vynp eliminated
114	!
115	! 19 2007-02-23 04:53:48Z raasch
116	! +handling of top fluxes
117	!
118	! RCS Log replace by Id keyword, revision history cleaned up
119	!
120	! Revision 1.49 2006/08/22 15:59:07 raasch
121	! No optimization of this file on the ibmy (Yonsei Univ.)
122	!
123	! Revision 1.1 1998/03/09 16:22:22 raasch
124	! Initial revision
125	!
126	!
127	! Description:
128	! ------------
129	! Allocation of arrays and initialization of the 3D model via
130	! a) pre-run the 1D model
131	! or
132	! b) pre-set constant linear profiles
133	! or
134	! c) read values of a previous run
135	!------------------------------------------------------------------------------!
136
137	USE advec_ws
138	USE arrays_3d
139	USE averaging
140	USE cloud_parameters
141	USE constants
142	USE control_parameters
143	USE cpulog
144	USE indices
145	USE interfaces
146	USE model_1d
147	USE netcdf_control
148	USE particle_attributes
149	USE pegrid
150	USE profil_parameter
151	USE random_function_mod
152	USE statistics
153
154	IMPLICIT NONE
155
156	INTEGER :: i, ind_array(1), j, k, sr
157
158	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l
159
160	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l, &
161	ngp_2dh_s_inner_l
162
163	REAL :: a, b
164
165	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
166
167	REAL, DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l, ngp_3d_inner_tmp
168
169
170	!
171	!-- Allocate arrays
172	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
173	ngp_3d(0:statistic_regions), &
174	ngp_3d_inner(0:statistic_regions), &
175	ngp_3d_inner_l(0:statistic_regions), &
176	ngp_3d_inner_tmp(0:statistic_regions), &
177	sums_divnew_l(0:statistic_regions), &
178	sums_divold_l(0:statistic_regions) )
179	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt) )
180	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
181	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
182	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
183	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
184	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
185	sums(nzb:nzt+1,pr_palm+max_pr_user), &
186	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
187	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
188	sums_up_fraction_l(10,3,0:statistic_regions), &
189	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
190	ts_value(dots_max,0:statistic_regions) )
191	ALLOCATE( km_damp_x(nxlg:nxrg), km_damp_y(nysg:nyng) )
192
193	ALLOCATE( rif_1(nysg:nyng,nxlg:nxrg), shf_1(nysg:nyng,nxlg:nxrg), &
194	ts(nysg:nyng,nxlg:nxrg), tswst_1(nysg:nyng,nxlg:nxrg), &
195	us(nysg:nyng,nxlg:nxrg), usws_1(nysg:nyng,nxlg:nxrg), &
196	uswst_1(nysg:nyng,nxlg:nxrg), &
197	vsws_1(nysg:nyng,nxlg:nxrg), &
198	vswst_1(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg) )
199
200	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
201	!
202	!-- Leapfrog scheme needs two timelevels of diffusion quantities
203	ALLOCATE( rif_2(nysg:nyng,nxlg:nxrg), &
204	shf_2(nysg:nyng,nxlg:nxrg), &
205	tswst_2(nysg:nyng,nxlg:nxrg), &
206	usws_2(nysg:nyng,nxlg:nxrg), &
207	uswst_2(nysg:nyng,nxlg:nxrg), &
208	vswst_2(nysg:nyng,nxlg:nxrg), &
209	vsws_2(nysg:nyng,nxlg:nxrg) )
210	ENDIF
211
212	ALLOCATE( d(nzb+1:nzta,nys:nyna,nxl:nxra), &
213	e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
214	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
215	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
216	kh_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
217	km_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
218	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
219	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
220	pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
221	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
222	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
223	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
224	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
225	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
226	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
227	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
228	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
229	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
230	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
231	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
232	!
233	!-- Following array is required for perturbation pressure within the iterative
234	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
235	!-- the weighted average of the substeps and cannot be used in the Poisson
236	!-- solver.
237	IF ( psolver == 'sor' ) THEN
238	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
239	ELSEIF ( psolver == 'multigrid' ) THEN
240	!
241	!-- For performance reasons, multigrid is using one ghost layer only
242	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
243	ENDIF
244
245	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
246	ALLOCATE( kh_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
247	km_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
248	ENDIF
249
250	IF ( humidity .OR. passive_scalar ) THEN
251	!
252	!-- 2D-humidity/scalar arrays
253	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
254	qsws_1(nysg:nyng,nxlg:nxrg), &
255	qswst_1(nysg:nyng,nxlg:nxrg) )
256
257	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
258	ALLOCATE( qsws_2(nysg:nyng,nxlg:nxrg), &
259	qswst_2(nysg:nyng,nxlg:nxrg) )
260	ENDIF
261	!
262	!-- 3D-humidity/scalar arrays
263	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
264	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
265	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
266
267	!
268	!-- 3D-arrays needed for humidity only
269	IF ( humidity ) THEN
270	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
271
272	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
273	ALLOCATE( vpt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
274	ENDIF
275
276	IF ( cloud_physics ) THEN
277	!
278	!-- Liquid water content
279	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
280	!
281	!-- Precipitation amount and rate (only needed if output is switched)
282	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
283	precipitation_rate(nysg:nyng,nxlg:nxrg) )
284	ENDIF
285
286	IF ( cloud_droplets ) THEN
287	!
288	!-- Liquid water content, change in liquid water content,
289	!-- real volume of particles (with weighting), volume of particles
290	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
291	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
292	ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
293	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
294	ENDIF
295
296	ENDIF
297
298	ENDIF
299
300	IF ( ocean ) THEN
301	ALLOCATE( saswsb_1(nysg:nyng,nxlg:nxrg), &
302	saswst_1(nysg:nyng,nxlg:nxrg) )
303	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
304	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
305	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
306	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
307	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
308	prho => prho_1
309	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
310	! density to be apointer
311	IF ( humidity_remote ) THEN
312	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
313	qswst_remote = 0.0
314	ENDIF
315	ENDIF
316
317	!
318	!-- 3D-array for storing the dissipation, needed for calculating the sgs
319	!-- particle velocities
320	IF ( use_sgs_for_particles ) THEN
321	ALLOCATE ( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
322	ELSE
323	ALLOCATE ( diss(2,2,2) ) ! required because diss is used as a
324	! formal parameter
325	ENDIF
326
327	IF ( dt_dosp /= 9999999.9 ) THEN
328	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
329	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
330	spectrum_x = 0.0
331	spectrum_y = 0.0
332	ENDIF
333
334	!
335	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
336	IF ( plant_canopy ) THEN
337	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
338	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
339	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
340	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
341	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
342
343	IF ( passive_scalar ) THEN
344	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
345	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
346	ENDIF
347
348	IF ( cthf /= 0.0 ) THEN
349	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
350	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
351	ENDIF
352
353	ENDIF
354
355	!
356	!-- 4D-array for storing the Rif-values at vertical walls
357	IF ( topography /= 'flat' ) THEN
358	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
359	rif_wall = 0.0
360	ENDIF
361
362	!
363	!-- Arrays to store velocity data from t-dt and the phase speeds which
364	!-- are needed for radiation boundary conditions
365	IF ( outflow_l ) THEN
366	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
367	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
368	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
369	ENDIF
370	IF ( outflow_r ) THEN
371	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
372	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
373	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
374	ENDIF
375	IF ( outflow_l .OR. outflow_r ) THEN
376	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
377	c_w(nzb:nzt+1,nysg:nyng) )
378	ENDIF
379	IF ( outflow_s ) THEN
380	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
381	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
382	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
383	ENDIF
384	IF ( outflow_n ) THEN
385	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
386	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
387	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
388	ENDIF
389	IF ( outflow_s .OR. outflow_n ) THEN
390	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
391	c_w(nzb:nzt+1,nxlg:nxrg) )
392	ENDIF
393
394	!
395	!-- Initial assignment of the pointers
396	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
397
398	rif_m => rif_1; rif => rif_2
399	shf_m => shf_1; shf => shf_2
400	tswst_m => tswst_1; tswst => tswst_2
401	usws_m => usws_1; usws => usws_2
402	uswst_m => uswst_1; uswst => uswst_2
403	vsws_m => vsws_1; vsws => vsws_2
404	vswst_m => vswst_1; vswst => vswst_2
405	e_m => e_1; e => e_2; e_p => e_3; te_m => e_3
406	kh_m => kh_1; kh => kh_2
407	km_m => km_1; km => km_2
408	pt_m => pt_1; pt => pt_2; pt_p => pt_3; tpt_m => pt_3
409	u_m => u_1; u => u_2; u_p => u_3; tu_m => u_3
410	v_m => v_1; v => v_2; v_p => v_3; tv_m => v_3
411	w_m => w_1; w => w_2; w_p => w_3; tw_m => w_3
412
413	IF ( humidity .OR. passive_scalar ) THEN
414	qsws_m => qsws_1; qsws => qsws_2
415	qswst_m => qswst_1; qswst => qswst_2
416	q_m => q_1; q => q_2; q_p => q_3; tq_m => q_3
417	IF ( humidity ) vpt_m => vpt_1; vpt => vpt_2
418	IF ( cloud_physics ) ql => ql_1
419	IF ( cloud_droplets ) THEN
420	ql => ql_1
421	ql_c => ql_2
422	ENDIF
423	ENDIF
424
425	ELSE
426
427	rif => rif_1
428	shf => shf_1
429	tswst => tswst_1
430	usws => usws_1
431	uswst => uswst_1
432	vsws => vsws_1
433	vswst => vswst_1
434	e => e_1; e_p => e_2; te_m => e_3; e_m => e_3
435	kh => kh_1
436	km => km_1
437	pt => pt_1; pt_p => pt_2; tpt_m => pt_3; pt_m => pt_3
438	u => u_1; u_p => u_2; tu_m => u_3; u_m => u_3
439	v => v_1; v_p => v_2; tv_m => v_3; v_m => v_3
440	w => w_1; w_p => w_2; tw_m => w_3; w_m => w_3
441
442	IF ( humidity .OR. passive_scalar ) THEN
443	qsws => qsws_1
444	qswst => qswst_1
445	q => q_1; q_p => q_2; tq_m => q_3; q_m => q_3
446	IF ( humidity ) vpt => vpt_1
447	IF ( cloud_physics ) ql => ql_1
448	IF ( cloud_droplets ) THEN
449	ql => ql_1
450	ql_c => ql_2
451	ENDIF
452	ENDIF
453
454	IF ( ocean ) THEN
455	saswsb => saswsb_1
456	saswst => saswst_1
457	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
458	ENDIF
459
460	ENDIF
461
462	!
463	!-- Allocate arrays containing the RK coefficient for calculation of
464	!-- perturbation pressure and turbulent fluxes. At this point values are
465	!-- set for pressure calculation during initialization (where no timestep
466	!-- is done). Further below the values needed within the timestep scheme
467	!-- will be set.
468	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
469	weight_pres(1:intermediate_timestep_count_max) )
470	weight_substep = 1.0
471	weight_pres = 1.0
472	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
473
474	!
475	!-- Initialize model variables
476	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
477	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
478	!
479	!-- First model run of a possible job queue.
480	!-- Initial profiles of the variables must be computes.
481	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
482	!
483	!-- Use solutions of the 1D model as initial profiles,
484	!-- start 1D model
485	CALL init_1d_model
486	!
487	!-- Transfer initial profiles to the arrays of the 3D model
488	DO i = nxlg, nxrg
489	DO j = nysg, nyng
490	e(:,j,i) = e1d
491	kh(:,j,i) = kh1d
492	km(:,j,i) = km1d
493	pt(:,j,i) = pt_init
494	u(:,j,i) = u1d
495	v(:,j,i) = v1d
496	ENDDO
497	ENDDO
498
499	IF ( humidity .OR. passive_scalar ) THEN
500	DO i = nxlg, nxrg
501	DO j = nysg, nyng
502	q(:,j,i) = q_init
503	ENDDO
504	ENDDO
505	ENDIF
506
507	IF ( .NOT. constant_diffusion ) THEN
508	DO i = nxlg, nxrg
509	DO j = nysg, nyng
510	e(:,j,i) = e1d
511	ENDDO
512	ENDDO
513	!
514	!-- Store initial profiles for output purposes etc.
515	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
516
517	IF ( prandtl_layer ) THEN
518	rif = rif1d(nzb+1)
519	ts = 0.0 ! could actually be computed more accurately in the
520	! 1D model. Update when opportunity arises.
521	us = us1d
522	usws = usws1d
523	vsws = vsws1d
524	ELSE
525	ts = 0.0 ! must be set, because used in
526	rif = 0.0 ! flowste
527	us = 0.0
528	usws = 0.0
529	vsws = 0.0
530	ENDIF
531
532	ELSE
533	e = 0.0 ! must be set, because used in
534	rif = 0.0 ! flowste
535	ts = 0.0
536	us = 0.0
537	usws = 0.0
538	vsws = 0.0
539	ENDIF
540	uswst = top_momentumflux_u
541	vswst = top_momentumflux_v
542
543	!
544	!-- In every case qs = 0.0 (see also pt)
545	!-- This could actually be computed more accurately in the 1D model.
546	!-- Update when opportunity arises!
547	IF ( humidity .OR. passive_scalar ) qs = 0.0
548
549	!
550	!-- inside buildings set velocities back to zero
551	IF ( topography /= 'flat' ) THEN
552	DO i = nxl-1, nxr+1
553	DO j = nys-1, nyn+1
554	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
555	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
556	ENDDO
557	ENDDO
558
559	!
560	!-- WARNING: The extra boundary conditions set after running the
561	!-- ------- 1D model impose an error on the divergence one layer
562	!-- below the topography; need to correct later
563	!-- ATTENTION: Provisional correction for Piacsek & Williams
564	!-- --------- advection scheme: keep u and v zero one layer below
565	!-- the topography.
566	!
567	!-- Following was removed, because mirror boundary condition are
568	!-- replaced by dirichlet boundary conditions
569	!
570	! IF ( ibc_uv_b == 0 ) THEN
571	!!
572	!!-- Satisfying the Dirichlet condition with an extra layer below
573	!!-- the surface where the u and v component change their sign.
574	! DO i = nxl-1, nxr+1
575	! DO j = nys-1, nyn+1
576	! IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = -u(1,j,i)
577	! IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = -v(1,j,i)
578	! ENDDO
579	! ENDDO
580	!
581	! ELSE
582	IF ( ibc_uv_b == 1 ) THEN
583	!
584	!-- Neumann condition
585	DO i = nxl-1, nxr+1
586	DO j = nys-1, nyn+1
587	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
588	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
589	ENDDO
590	ENDDO
591
592	ENDIF
593
594	ENDIF
595
596	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
597	THEN
598	!
599	!-- Use constructed initial profiles (velocity constant with height,
600	!-- temperature profile with constant gradient)
601	DO i = nxlg, nxrg
602	DO j = nysg, nyng
603	pt(:,j,i) = pt_init
604	u(:,j,i) = u_init
605	v(:,j,i) = v_init
606	ENDDO
607	ENDDO
608
609	!
610	!-- Set initial horizontal velocities at the lowest computational grid
611	!-- levels to zero in order to avoid too small time steps caused by the
612	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
613	!-- in the limiting formula!). The original values are stored to be later
614	!-- used for volume flow control.
615	DO i = nxlg, nxrg
616	DO j = nysg, nyng
617	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
618	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
619	ENDDO
620	ENDDO
621
622	IF ( humidity .OR. passive_scalar ) THEN
623	DO i = nxlg, nxrg
624	DO j = nysg, nyng
625	q(:,j,i) = q_init
626	ENDDO
627	ENDDO
628	ENDIF
629
630	IF ( ocean ) THEN
631	DO i = nxlg, nxrg
632	DO j = nysg, nyng
633	sa(:,j,i) = sa_init
634	ENDDO
635	ENDDO
636	ENDIF
637
638	IF ( constant_diffusion ) THEN
639	km = km_constant
640	kh = km / prandtl_number
641	e = 0.0
642	ELSEIF ( e_init > 0.0 ) THEN
643	DO k = nzb+1, nzt
644	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
645	ENDDO
646	km(nzb,:,:) = km(nzb+1,:,:)
647	km(nzt+1,:,:) = km(nzt,:,:)
648	kh = km / prandtl_number
649	e = e_init
650	ELSE
651	IF ( .NOT. ocean ) THEN
652	kh = 0.01 ! there must exist an initial diffusion, because
653	km = 0.01 ! otherwise no TKE would be produced by the
654	! production terms, as long as not yet
655	! e = (u/cm)*2 at k=nzb+1
656	ELSE
657	kh = 0.00001
658	km = 0.00001
659	ENDIF
660	e = 0.0
661	ENDIF
662	rif = 0.0
663	ts = 0.0
664	us = 0.0
665	usws = 0.0
666	uswst = top_momentumflux_u
667	vsws = 0.0
668	vswst = top_momentumflux_v
669	IF ( humidity .OR. passive_scalar ) qs = 0.0
670
671	!
672	!-- Compute initial temperature field and other constants used in case
673	!-- of a sloping surface
674	IF ( sloping_surface ) CALL init_slope
675
676	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
677	THEN
678	!
679	!-- Initialization will completely be done by the user
680	CALL user_init_3d_model
681
682	ENDIF
683	!
684	!-- Bottom boundary
685	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
686	u(nzb,:,:) = 0.0
687	v(nzb,:,:) = 0.0
688	ENDIF
689
690	!
691	!-- Apply channel flow boundary condition
692	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
693
694	u(nzt+1,:,:) = 0.0
695	v(nzt+1,:,:) = 0.0
696
697	!-- For the Dirichlet condition to be correctly applied at the top, set
698	!-- ug and vg to zero there
699	ug(nzt+1) = 0.0
700	vg(nzt+1) = 0.0
701
702	ENDIF
703
704	!
705	!-- Calculate virtual potential temperature
706	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
707
708	!
709	!-- Store initial profiles for output purposes etc.
710	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
711	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
712	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
713	hom(nzb,1,5,:) = 0.0
714	hom(nzb,1,6,:) = 0.0
715	ENDIF
716	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
717	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
718	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
719
720	IF ( ocean ) THEN
721	!
722	!-- Store initial salinity profile
723	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
724	ENDIF
725
726	IF ( humidity ) THEN
727	!
728	!-- Store initial profile of total water content, virtual potential
729	!-- temperature
730	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
731	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
732	IF ( cloud_physics .OR. cloud_droplets ) THEN
733	!
734	!-- Store initial profile of specific humidity and potential
735	!-- temperature
736	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
737	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
738	ENDIF
739	ENDIF
740
741	IF ( passive_scalar ) THEN
742	!
743	!-- Store initial scalar profile
744	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
745	ENDIF
746
747	!
748	!-- Initialize fluxes at bottom surface
749	IF ( use_surface_fluxes ) THEN
750
751	IF ( constant_heatflux ) THEN
752	!
753	!-- Heat flux is prescribed
754	IF ( random_heatflux ) THEN
755	CALL disturb_heatflux
756	ELSE
757	shf = surface_heatflux
758	!
759	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
760	IF ( TRIM( topography ) /= 'flat' ) THEN
761	DO i = nxlg, nxrg
762	DO j = nysg, nyng
763	IF ( nzb_s_inner(j,i) /= 0 ) THEN
764	shf(j,i) = wall_heatflux(0)
765	ENDIF
766	ENDDO
767	ENDDO
768	ENDIF
769	ENDIF
770	IF ( ASSOCIATED( shf_m ) ) shf_m = shf
771	ENDIF
772
773	!
774	!-- Determine the near-surface water flux
775	IF ( humidity .OR. passive_scalar ) THEN
776	IF ( constant_waterflux ) THEN
777	qsws = surface_waterflux
778	!
779	!-- Over topography surface_waterflux is replaced by
780	!-- wall_humidityflux(0)
781	IF ( TRIM( topography ) /= 'flat' ) THEN
782	wall_qflux = wall_humidityflux
783	DO i = nxlg, nxrg
784	DO j = nysg, nyng
785	IF ( nzb_s_inner(j,i) /= 0 ) THEN
786	qsws(j,i) = wall_qflux(0)
787	ENDIF
788	ENDDO
789	ENDDO
790	ENDIF
791	IF ( ASSOCIATED( qsws_m ) ) qsws_m = qsws
792	ENDIF
793	ENDIF
794
795	ENDIF
796
797	!
798	!-- Initialize fluxes at top surface
799	!-- Currently, only the heatflux and salinity flux can be prescribed.
800	!-- The latent flux is zero in this case!
801	IF ( use_top_fluxes ) THEN
802
803	IF ( constant_top_heatflux ) THEN
804	!
805	!-- Heat flux is prescribed
806	tswst = top_heatflux
807	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
808
809	IF ( humidity .OR. passive_scalar ) THEN
810	qswst = 0.0
811	IF ( ASSOCIATED( qswst_m ) ) qswst_m = qswst
812	ENDIF
813
814	IF ( ocean ) THEN
815	saswsb = bottom_salinityflux
816	saswst = top_salinityflux
817	ENDIF
818	ENDIF
819
820	!
821	!-- Initialization in case of a coupled model run
822	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
823	tswst = 0.0
824	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
825	ENDIF
826
827	ENDIF
828
829	!
830	!-- Initialize Prandtl layer quantities
831	IF ( prandtl_layer ) THEN
832
833	z0 = roughness_length
834
835	IF ( .NOT. constant_heatflux ) THEN
836	!
837	!-- Surface temperature is prescribed. Here the heat flux cannot be
838	!-- simply estimated, because therefore rif, u* and theta* would have
839	!-- to be computed by iteration. This is why the heat flux is assumed
840	!-- to be zero before the first time step. It approaches its correct
841	!-- value in the course of the first few time steps.
842	shf = 0.0
843	IF ( ASSOCIATED( shf_m ) ) shf_m = 0.0
844	ENDIF
845
846	IF ( humidity .OR. passive_scalar ) THEN
847	IF ( .NOT. constant_waterflux ) THEN
848	qsws = 0.0
849	IF ( ASSOCIATED( qsws_m ) ) qsws_m = 0.0
850	ENDIF
851	ENDIF
852
853	ENDIF
854
855
856	!
857	!-- For the moment, vertical velocity is zero
858	w = 0.0
859
860	!
861	!-- Initialize array sums (must be defined in first call of pres)
862	sums = 0.0
863
864	!
865	!-- In case of iterative solvers, p must get an initial value
866	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0
867
868	!
869	!-- Treating cloud physics, liquid water content and precipitation amount
870	!-- are zero at beginning of the simulation
871	IF ( cloud_physics ) THEN
872	ql = 0.0
873	IF ( precipitation ) precipitation_amount = 0.0
874	ENDIF
875
876	!
877	!-- Initialize quantities for special advections schemes
878	CALL init_advec
879
880	!
881	!-- Impose vortex with vertical axis on the initial velocity profile
882	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
883	CALL init_rankine
884	ENDIF
885
886	!
887	!-- Impose temperature anomaly (advection test only)
888	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
889	CALL init_pt_anomaly
890	ENDIF
891
892	!
893	!-- If required, change the surface temperature at the start of the 3D run
894	IF ( pt_surface_initial_change /= 0.0 ) THEN
895	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
896	ENDIF
897
898	!
899	!-- If required, change the surface humidity/scalar at the start of the 3D
900	!-- run
901	IF ( ( humidity .OR. passive_scalar ) .AND. &
902	q_surface_initial_change /= 0.0 ) THEN
903	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
904	ENDIF
905
906	!
907	!-- Initialize the random number generator (from numerical recipes)
908	CALL random_function_ini
909
910	!
911	!-- Initialize old and new time levels.
912	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
913	e_m = e; pt_m = pt; u_m = u; v_m = v; w_m = w; kh_m = kh; km_m = km
914	ELSE
915	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
916	ENDIF
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	IF ( ASSOCIATED( q_m ) ) q_m = q
921	IF ( timestep_scheme(1:5) == 'runge' ) tq_m = 0.0
922	q_p = q
923	IF ( humidity .AND. ASSOCIATED( vpt_m ) ) vpt_m = vpt
924	ENDIF
925
926	IF ( ocean ) THEN
927	tsa_m = 0.0
928	sa_p = sa
929	ENDIF
930
931
932	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
933	TRIM( initializing_actions ) == 'cyclic_fill' ) &
934	THEN
935	!
936	!-- When reading data for cyclic fill of 3D prerun data, first read
937	!-- some of the global variables from restart file
938	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
939
940	CALL read_parts_of_var_list
941	CALL close_file( 13 )
942
943	!
944	!-- Initialization of the turbulence recycling method
945	IF ( turbulent_inflow ) THEN
946	!
947	!-- Store temporally and horizontally averaged vertical profiles to be
948	!-- used as mean inflow profiles
949	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
950
951	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
952	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
953	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
954	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
955
956	!
957	!-- Use these mean profiles for the inflow (provided that Dirichlet
958	!-- conditions are used)
959	IF ( inflow_l ) THEN
960	DO j = nysg, nyng
961	DO k = nzb, nzt+1
962	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
963	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
964	w(k,j,nxlg:-1) = 0.0
965	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
966	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
967	ENDDO
968	ENDDO
969	ENDIF
970
971	!
972	!-- Calculate the damping factors to be used at the inflow. For a
973	!-- turbulent inflow the turbulent fluctuations have to be limited
974	!-- vertically because otherwise the turbulent inflow layer will grow
975	!-- in time.
976	IF ( inflow_damping_height == 9999999.9 ) THEN
977	!
978	!-- Default: use the inversion height calculated by the prerun; if
979	!-- this is zero, inflow_damping_height must be explicitly
980	!-- specified.
981	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0 ) THEN
982	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
983	ELSE
984	WRITE( message_string, * ) 'inflow_damping_height must be ',&
985	'explicitly specified because&the inversion height ', &
986	'calculated by the prerun is zero.'
987	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
988	ENDIF
989
990	ENDIF
991
992	IF ( inflow_damping_width == 9999999.9 ) THEN
993	!
994	!-- Default for the transition range: one tenth of the undamped
995	!-- layer
996	inflow_damping_width = 0.1 * inflow_damping_height
997
998	ENDIF
999
1000	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1001
1002	DO k = nzb, nzt+1
1003
1004	IF ( zu(k) <= inflow_damping_height ) THEN
1005	inflow_damping_factor(k) = 1.0
1006	ELSEIF ( zu(k) <= inflow_damping_height + &
1007	inflow_damping_width ) THEN
1008	inflow_damping_factor(k) = 1.0 - &
1009	( zu(k) - inflow_damping_height ) / &
1010	inflow_damping_width
1011	ELSE
1012	inflow_damping_factor(k) = 0.0
1013	ENDIF
1014
1015	ENDDO
1016	ENDIF
1017
1018	ENDIF
1019
1020	!
1021	!-- Read binary data from restart file
1022	! DO i = 0, io_blocks-1
1023	! IF ( i == io_group ) THEN
1024	CALL read_3d_binary
1025	! ENDIF
1026	!#if defined( __parallel )
1027	! CALL MPI_BARRIER( comm2d, ierr )
1028	!#endif
1029	! ENDDO
1030
1031	!
1032	!-- Inside buildings set velocities and TKE back to zero
1033	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1034	topography /= 'flat' ) THEN
1035	!
1036	!-- Inside buildings set velocities and TKE back to zero.
1037	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1038	!-- maybe revise later.
1039	IF ( timestep_scheme(1:5) == 'runge' ) THEN
1040	DO i = nxlg, nxrg
1041	DO j = nysg, nyng
1042	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1043	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1044	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1045	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1046	u_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1047	v_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1048	w_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1049	e_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1050	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1051	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1052	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1053	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1054	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1055	ENDDO
1056	ENDDO
1057	ELSE
1058	DO i = nxlg, nxrg
1059	DO j = nysg, nyng
1060	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1061	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1062	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1063	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1064	u_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1065	v_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1066	w_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1067	e_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1068	u_p(nzb:nzb_u_inner(j,i),j,i) = 0.0
1069	v_p(nzb:nzb_v_inner(j,i),j,i) = 0.0
1070	w_p(nzb:nzb_w_inner(j,i),j,i) = 0.0
1071	e_p(nzb:nzb_w_inner(j,i),j,i) = 0.0
1072	ENDDO
1073	ENDDO
1074	ENDIF
1075
1076	ENDIF
1077
1078	!
1079	!-- Calculate initial temperature field and other constants used in case
1080	!-- of a sloping surface
1081	IF ( sloping_surface ) CALL init_slope
1082
1083	!
1084	!-- Initialize new time levels (only done in order to set boundary values
1085	!-- including ghost points)
1086	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1087	IF ( humidity .OR. passive_scalar ) q_p = q
1088	IF ( ocean ) sa_p = sa
1089
1090	!
1091	!-- Allthough tendency arrays are set in prognostic_equations, they have
1092	!-- have to be predefined here because they are used (but multiplied with 0)
1093	!-- there before they are set.
1094	IF ( timestep_scheme(1:5) == 'runge' ) THEN
1095	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1096	IF ( humidity .OR. passive_scalar ) tq_m = 0.0
1097	IF ( ocean ) tsa_m = 0.0
1098	ENDIF
1099
1100	ELSE
1101	!
1102	!-- Actually this part of the programm should not be reached
1103	message_string = 'unknown initializing problem'
1104	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1105	ENDIF
1106
1107
1108	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1109	!
1110	!-- Initialize old timelevels needed for radiation boundary conditions
1111	IF ( outflow_l ) THEN
1112	u_m_l(:,:,:) = u(:,:,1:2)
1113	v_m_l(:,:,:) = v(:,:,0:1)
1114	w_m_l(:,:,:) = w(:,:,0:1)
1115	ENDIF
1116	IF ( outflow_r ) THEN
1117	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1118	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1119	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1120	ENDIF
1121	IF ( outflow_s ) THEN
1122	u_m_s(:,:,:) = u(:,0:1,:)
1123	v_m_s(:,:,:) = v(:,1:2,:)
1124	w_m_s(:,:,:) = w(:,0:1,:)
1125	ENDIF
1126	IF ( outflow_n ) THEN
1127	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1128	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1129	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1130	ENDIF
1131
1132	ENDIF
1133
1134	!
1135	!-- Calculate the initial volume flow at the right and north boundary
1136	IF ( conserve_volume_flow ) THEN
1137
1138	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1139
1140	volume_flow_initial_l = 0.0
1141	volume_flow_area_l = 0.0
1142
1143	IF ( nxr == nx ) THEN
1144	DO j = nys, nyn
1145	DO k = nzb_2d(j,nx)+1, nzt
1146	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1147	hom_sum(k,1,0) * dzw(k)
1148	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1149	ENDDO
1150	ENDDO
1151	ENDIF
1152
1153	IF ( nyn == ny ) THEN
1154	DO i = nxl, nxr
1155	DO k = nzb_2d(ny,i)+1, nzt
1156	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1157	hom_sum(k,2,0) * dzw(k)
1158	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1159	ENDDO
1160	ENDDO
1161	ENDIF
1162
1163	#if defined( __parallel )
1164	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1165	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1166	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1167	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1168
1169	#else
1170	volume_flow_initial = volume_flow_initial_l
1171	volume_flow_area = volume_flow_area_l
1172	#endif
1173
1174	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1175
1176	volume_flow_initial_l = 0.0
1177	volume_flow_area_l = 0.0
1178
1179	IF ( nxr == nx ) THEN
1180	DO j = nys, nyn
1181	DO k = nzb_2d(j,nx)+1, nzt
1182	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1183	u(k,j,nx) * dzw(k)
1184	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1185	ENDDO
1186	ENDDO
1187	ENDIF
1188
1189	IF ( nyn == ny ) THEN
1190	DO i = nxl, nxr
1191	DO k = nzb_2d(ny,i)+1, nzt
1192	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1193	v(k,ny,i) * dzw(k)
1194	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1195	ENDDO
1196	ENDDO
1197	ENDIF
1198
1199	#if defined( __parallel )
1200	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1201	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1202	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1203	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1204
1205	#else
1206	volume_flow_initial = volume_flow_initial_l
1207	volume_flow_area = volume_flow_area_l
1208	#endif
1209
1210	ENDIF
1211
1212	!
1213	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1214	!-- from u\|v_bulk instead
1215	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1216	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1217	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1218	ENDIF
1219
1220	ENDIF
1221
1222
1223	!
1224	!-- Impose random perturbation on the horizontal velocity field and then
1225	!-- remove the divergences from the velocity field at the initial stage
1226	IF ( create_disturbances .AND. &
1227	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1228	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1229
1230	CALL disturb_field( nzb_u_inner, tend, u )
1231	CALL disturb_field( nzb_v_inner, tend, v )
1232	n_sor = nsor_ini
1233	CALL pres
1234	n_sor = nsor
1235	ENDIF
1236
1237	!
1238	!-- Initialization of the leaf area density
1239	IF ( plant_canopy ) THEN
1240
1241	SELECT CASE ( TRIM( canopy_mode ) )
1242
1243	CASE( 'block' )
1244
1245	DO i = nxlg, nxrg
1246	DO j = nysg, nyng
1247	lad_s(:,j,i) = lad(:)
1248	cdc(:,j,i) = drag_coefficient
1249	IF ( passive_scalar ) THEN
1250	sls(:,j,i) = leaf_surface_concentration
1251	sec(:,j,i) = scalar_exchange_coefficient
1252	ENDIF
1253	ENDDO
1254	ENDDO
1255
1256	CASE DEFAULT
1257
1258	!
1259	!-- The DEFAULT case is reached either if the parameter
1260	!-- canopy mode contains a wrong character string or if the
1261	!-- user has coded a special case in the user interface.
1262	!-- There, the subroutine user_init_plant_canopy checks
1263	!-- which of these two conditions applies.
1264	CALL user_init_plant_canopy
1265
1266	END SELECT
1267
1268	CALL exchange_horiz( lad_s, nbgp )
1269	CALL exchange_horiz( cdc, nbgp )
1270
1271	IF ( passive_scalar ) THEN
1272	CALL exchange_horiz( sls, nbgp )
1273	CALL exchange_horiz( sec, nbgp )
1274	ENDIF
1275
1276	!
1277	!-- Sharp boundaries of the plant canopy in horizontal directions
1278	!-- In vertical direction the interpolation is retained, as the leaf
1279	!-- area density is initialised by prescribing a vertical profile
1280	!-- consisting of piecewise linear segments. The upper boundary
1281	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1282
1283	DO i = nxl, nxr
1284	DO j = nys, nyn
1285	DO k = nzb, nzt+1
1286	IF ( lad_s(k,j,i) > 0.0 ) THEN
1287	lad_u(k,j,i) = lad_s(k,j,i)
1288	lad_u(k,j,i+1) = lad_s(k,j,i)
1289	lad_v(k,j,i) = lad_s(k,j,i)
1290	lad_v(k,j+1,i) = lad_s(k,j,i)
1291	ENDIF
1292	ENDDO
1293	DO k = nzb, nzt
1294	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1295	ENDDO
1296	ENDDO
1297	ENDDO
1298
1299	lad_w(pch_index,:,:) = 0.0
1300	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1301
1302	CALL exchange_horiz( lad_u, nbgp )
1303	CALL exchange_horiz( lad_v, nbgp )
1304	CALL exchange_horiz( lad_w, nbgp )
1305
1306	!
1307	!-- Initialisation of the canopy heat source distribution
1308	IF ( cthf /= 0.0 ) THEN
1309	!
1310	!-- Piecewise evaluation of the leaf area index by
1311	!-- integration of the leaf area density
1312	lai(:,:,:) = 0.0
1313	DO i = nxlg, nxrg
1314	DO j = nysg, nyng
1315	DO k = pch_index-1, 0, -1
1316	lai(k,j,i) = lai(k+1,j,i) + &
1317	( 0.5 * ( lad_w(k+1,j,i) + &
1318	lad_s(k+1,j,i) ) * &
1319	( zw(k+1) - zu(k+1) ) ) + &
1320	( 0.5 * ( lad_w(k,j,i) + &
1321	lad_s(k+1,j,i) ) * &
1322	( zu(k+1) - zw(k) ) )
1323	ENDDO
1324	ENDDO
1325	ENDDO
1326
1327	!
1328	!-- Evaluation of the upward kinematic vertical heat flux within the
1329	!-- canopy
1330	DO i = nxlg, nxrg
1331	DO j = nysg, nyng
1332	DO k = 0, pch_index
1333	canopy_heat_flux(k,j,i) = cthf * &
1334	exp( -0.6 * lai(k,j,i) )
1335	ENDDO
1336	ENDDO
1337	ENDDO
1338
1339	!
1340	!-- The near surface heat flux is derived from the heat flux
1341	!-- distribution within the canopy
1342	shf(:,:) = canopy_heat_flux(0,:,:)
1343
1344	IF ( ASSOCIATED( shf_m ) ) shf_m = shf
1345
1346	ENDIF
1347
1348	ENDIF
1349
1350	!
1351	!-- If required, initialize dvrp-software
1352	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
1353
1354	IF ( ocean ) THEN
1355	!
1356	!-- Initialize quantities needed for the ocean model
1357	CALL init_ocean
1358
1359	ELSE
1360	!
1361	!-- Initialize quantities for handling cloud physics
1362	!-- This routine must be called before init_particles, because
1363	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1364	!-- init_particles) is not defined.
1365	CALL init_cloud_physics
1366	ENDIF
1367
1368	!
1369	!-- If required, initialize particles
1370	IF ( particle_advection ) CALL init_particles
1371
1372	!
1373	!-- Initialize the ws-scheme.
1374	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1375
1376	!
1377	!-- Setting weighting factors for calculation of perturbation pressure
1378	!-- and turbulent quantities from the RK substeps
1379	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1380
1381	weight_substep(1) = 1./6.
1382	weight_substep(2) = 3./10.
1383	weight_substep(3) = 8./15.
1384
1385	weight_pres(1) = 1./3.
1386	weight_pres(2) = 5./12.
1387	weight_pres(3) = 1./4.
1388
1389	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1390
1391	weight_substep(1) = 1./2.
1392	weight_substep(2) = 1./2.
1393
1394	weight_pres(1) = 1./2.
1395	weight_pres(2) = 1./2.
1396
1397	ELSE ! for Euler- and leapfrog-method
1398
1399	weight_substep(1) = 1.0
1400	weight_pres(1) = 1.0
1401
1402	ENDIF
1403
1404	!
1405	!-- Initialize Rayleigh damping factors
1406	rdf = 0.0
1407	IF ( rayleigh_damping_factor /= 0.0 ) THEN
1408	IF ( .NOT. ocean ) THEN
1409	DO k = nzb+1, nzt
1410	IF ( zu(k) >= rayleigh_damping_height ) THEN
1411	rdf(k) = rayleigh_damping_factor * &
1412	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
1413	/ ( zu(nzt) - rayleigh_damping_height ) )&
1414	)**2
1415	ENDIF
1416	ENDDO
1417	ELSE
1418	DO k = nzt, nzb+1, -1
1419	IF ( zu(k) <= rayleigh_damping_height ) THEN
1420	rdf(k) = rayleigh_damping_factor * &
1421	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
1422	/ ( rayleigh_damping_height - zu(nzb+1)))&
1423	)**2
1424	ENDIF
1425	ENDDO
1426	ENDIF
1427	ENDIF
1428
1429	!
1430	!-- Initialize the starting level and the vertical smoothing factor used for
1431	!-- the external pressure gradient
1432	dp_smooth_factor = 1.0
1433	IF ( dp_external ) THEN
1434	!
1435	!-- Set the starting level dp_level_ind_b only if it has not been set before
1436	!-- (e.g. in init_grid).
1437	IF ( dp_level_ind_b == 0 ) THEN
1438	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1439	dp_level_ind_b = ind_array(1) - 1 + nzb
1440	! MINLOC uses lower array bound 1
1441	ENDIF
1442	IF ( dp_smooth ) THEN
1443	dp_smooth_factor(:dp_level_ind_b) = 0.0
1444	DO k = dp_level_ind_b+1, nzt
1445	dp_smooth_factor(k) = 0.5 * ( 1.0 + SIN( pi * &
1446	( REAL( k - dp_level_ind_b ) / &
1447	REAL( nzt - dp_level_ind_b ) - 0.5 ) ) )
1448	ENDDO
1449	ENDIF
1450	ENDIF
1451
1452	!
1453	!-- Initialize diffusivities used within the outflow damping layer in case of
1454	!-- non-cyclic lateral boundaries. A linear increase is assumed over the first
1455	!-- half of the width of the damping layer
1456	IF ( bc_lr_dirrad ) THEN
1457
1458	DO i = nxlg, nxrg
1459	IF ( i >= nx - outflow_damping_width ) THEN
1460	km_damp_x(i) = km_damp_max * MIN( 1.0, &
1461	( i - ( nx - outflow_damping_width ) ) / &
1462	REAL( outflow_damping_width/2 ) &
1463	)
1464	ELSE
1465	km_damp_x(i) = 0.0
1466	ENDIF
1467	ENDDO
1468
1469	ELSEIF ( bc_lr_raddir ) THEN
1470
1471	DO i = nxlg, nxrg
1472	IF ( i <= outflow_damping_width ) THEN
1473	km_damp_x(i) = km_damp_max * MIN( 1.0, &
1474	( outflow_damping_width - i ) / &
1475	REAL( outflow_damping_width/2 ) &
1476	)
1477	ELSE
1478	km_damp_x(i) = 0.0
1479	ENDIF
1480	ENDDO
1481
1482	ENDIF
1483
1484	IF ( bc_ns_dirrad ) THEN
1485
1486	DO j = nysg, nyng
1487	IF ( j >= ny - outflow_damping_width ) THEN
1488	km_damp_y(j) = km_damp_max * MIN( 1.0, &
1489	( j - ( ny - outflow_damping_width ) ) / &
1490	REAL( outflow_damping_width/2 ) &
1491	)
1492	ELSE
1493	km_damp_y(j) = 0.0
1494	ENDIF
1495	ENDDO
1496
1497	ELSEIF ( bc_ns_raddir ) THEN
1498
1499	DO j = nysg, nyng
1500	IF ( j <= outflow_damping_width ) THEN
1501	km_damp_y(j) = km_damp_max * MIN( 1.0, &
1502	( outflow_damping_width - j ) / &
1503	REAL( outflow_damping_width/2 ) &
1504	)
1505	ELSE
1506	km_damp_y(j) = 0.0
1507	ENDIF
1508	ENDDO
1509
1510	ENDIF
1511
1512	!
1513	!-- Initialize local summation arrays for routine flow_statistics.
1514	!-- This is necessary because they may not yet have been initialized when they
1515	!-- are called from flow_statistics (or - depending on the chosen model run -
1516	!-- are never initialized)
1517	sums_divnew_l = 0.0
1518	sums_divold_l = 0.0
1519	sums_l_l = 0.0
1520	sums_up_fraction_l = 0.0
1521	sums_wsts_bc_l = 0.0
1522
1523	!
1524	!-- Pre-set masks for regional statistics. Default is the total model domain.
1525	rmask = 1.0
1526
1527	!
1528	!-- User-defined initializing actions. Check afterwards, if maximum number
1529	!-- of allowed timeseries is exceeded
1530	CALL user_init
1531
1532	IF ( dots_num > dots_max ) THEN
1533	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1534	' its maximum of dots_max = ', dots_max, &
1535	' &Please increase dots_max in modules.f90.'
1536	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1537	ENDIF
1538
1539	!
1540	!-- Input binary data file is not needed anymore. This line must be placed
1541	!-- after call of user_init!
1542	CALL close_file( 13 )
1543
1544	!
1545	!-- Compute total sum of active mask grid points
1546	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1547	!-- total domain
1548	!-- ngp_3d: number of grid points of the total domain
1549	ngp_2dh_outer_l = 0
1550	ngp_2dh_outer = 0
1551	ngp_2dh_s_inner_l = 0
1552	ngp_2dh_s_inner = 0
1553	ngp_2dh_l = 0
1554	ngp_2dh = 0
1555	ngp_3d_inner_l = 0.0
1556	ngp_3d_inner = 0
1557	ngp_3d = 0
1558	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1559
1560	DO sr = 0, statistic_regions
1561	DO i = nxl, nxr
1562	DO j = nys, nyn
1563	IF ( rmask(j,i,sr) == 1.0 ) THEN
1564	!
1565	!-- All xy-grid points
1566	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1567	!
1568	!-- xy-grid points above topography
1569	DO k = nzb_s_outer(j,i), nz + 1
1570	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1571	ENDDO
1572	DO k = nzb_s_inner(j,i), nz + 1
1573	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1574	ENDDO
1575	!
1576	!-- All grid points of the total domain above topography
1577	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1578	( nz - nzb_s_inner(j,i) + 2 )
1579	ENDIF
1580	ENDDO
1581	ENDDO
1582	ENDDO
1583
1584	sr = statistic_regions + 1
1585	#if defined( __parallel )
1586	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1587	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1588	comm2d, ierr )
1589	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1590	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1591	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1592	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1593	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1594	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1595	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1596	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1597	MPI_SUM, comm2d, ierr )
1598	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1599	#else
1600	ngp_2dh = ngp_2dh_l
1601	ngp_2dh_outer = ngp_2dh_outer_l
1602	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1603	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1604	#endif
1605
1606	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1607	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1608
1609	!
1610	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1611	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1612	!-- the respective subdomain lie below the surface topography
1613	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1614	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1615	ngp_3d_inner(:) )
1616	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1617
1618	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1619
1620
1621	END SUBROUTINE init_3d_model

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