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source: palm/trunk/SOURCE/init_3d_model.f90 @ 711

Last change on this file since 711 was 710, checked in by raasch, 13 years ago
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1	#if defined( __ibmy_special )
2	@PROCESS NOOPTimize
3	#endif
4	SUBROUTINE init_3d_model
5
6	!------------------------------------------------------------------------------!
7	! Current revisions:
8	! -----------------
9	!
10	!
11	! Former revisions:
12	! -----------------
13	! $Id: init_3d_model.f90 710 2011-03-30 09:45:27Z raasch $
14	!
15	! 709 2011-03-30 09:31:40Z raasch
16	! formatting adjustments
17	!
18	! 707 2011-03-29 11:39:40Z raasch
19	! p_sub renamed p_loc and allocated depending on the chosen pressure solver,
20	! initial assignments of zero to array p for iterative solvers only,
21	! bc_lr/ns replaced by bc_lr/ns_dirrad/raddir
22	!
23	! 680 2011-02-04 23:16:06Z gryschka
24	! bugfix: volume_flow_control
25	!
26	! 673 2011-01-18 16:19:48Z suehring
27	! weight_substep (moved from advec_ws) and weight_pres added.
28	! Allocate p_sub when using Multigrid or SOR solver.
29	! Call of ws_init moved behind the if requests.
30	!
31	! 667 2010-12-23 12:06:00Z suehring/gryschka
32	! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng in loops and
33	! allocation of arrays. Calls of exchange_horiz are modified.
34	! Call ws_init to initialize arrays needed for calculating statisticas and for
35	! optimization when ws-scheme is used.
36	! Initial volume flow is now calculated by using the variable hom_sum.
37	! Therefore the correction of initial volume flow for non-flat topography
38	! removed (removed u_nzb_p1_for_vfc and v_nzb_p1_for_vfc)
39	! Changed surface boundary conditions for u and v in case of ibc_uv_b == 0 from
40	! mirror to Dirichlet boundary conditions (u=v=0), so that k=nzb is
41	! representative for the height z0.
42	! Bugfix: type conversion of '1' to 64bit for the MAX function (ngp_3d_inner)
43	!
44	! 622 2010-12-10 08:08:13Z raasch
45	! optional barriers included in order to speed up collective operations
46	!
47	! 560 2010-09-09 10:06:09Z weinreis
48	! bugfix: correction of calculating ngp_3d for 64 bit
49	!
50	! 485 2010-02-05 10:57:51Z raasch
51	! calculation of ngp_3d + ngp_3d_inner changed because they have now 64 bit
52	!
53	! 407 2009-12-01 15:01:15Z maronga
54	! var_ts is replaced by dots_max
55	! Enabled passive scalar/humidity wall fluxes for non-flat topography
56	!
57	! 388 2009-09-23 09:40:33Z raasch
58	! Initialization of prho added.
59	! bugfix: correction of initial volume flow for non-flat topography
60	! bugfix: zero initialization of arrays within buildings for 'cyclic_fill'
61	! bugfix: avoid that ngp_2dh_s_inner becomes zero
62	! initializing_actions='read_data_for_recycling' renamed to 'cyclic_fill', now
63	! independent of turbulent_inflow
64	! Output of messages replaced by message handling routine.
65	! Set the starting level and the vertical smoothing factor used for
66	! the external pressure gradient
67	! +conserve_volume_flow_mode: 'default', 'initial_profiles', 'inflow_profile'
68	! and 'bulk_velocity'
69	! If the inversion height calculated by the prerun is zero,
70	! inflow_damping_height must be explicitly specified.
71	!
72	! 181 2008-07-30 07:07:47Z raasch
73	! bugfix: zero assignments to tendency arrays in case of restarts,
74	! further extensions and modifications in the initialisation of the plant
75	! canopy model,
76	! allocation of hom_sum moved to parin, initialization of spectrum_x\|y directly
77	! after allocating theses arrays,
78	! read data for recycling added as new initialization option,
79	! dummy allocation for diss
80	!
81	! 138 2007-11-28 10:03:58Z letzel
82	! New counter ngp_2dh_s_inner.
83	! Allow new case bc_uv_t = 'dirichlet_0' for channel flow.
84	! Corrected calculation of initial volume flow for 'set_1d-model_profiles' and
85	! 'set_constant_profiles' in case of buildings in the reference cross-sections.
86	!
87	! 108 2007-08-24 15:10:38Z letzel
88	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
89	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
90	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
91	! Rayleigh damping for ocean, optionally calculate km and kh from initial
92	! TKE e_init
93	!
94	! 97 2007-06-21 08:23:15Z raasch
95	! Initialization of salinity, call of init_ocean
96	!
97	! 87 2007-05-22 15:46:47Z raasch
98	! var_hom and var_sum renamed pr_palm
99	!
100	! 75 2007-03-22 09:54:05Z raasch
101	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
102	! bugfix for cases with the outflow damping layer extending over more than one
103	! subdomain, moisture renamed humidity,
104	! new initializing action "by_user" calls user_init_3d_model,
105	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
106	! initial velocities at nzb+1 are regarded for volume
107	! flow control in case they have been set zero before (to avoid small timesteps)
108	! -uvmean_outflow, uxrp, vynp eliminated
109	!
110	! 19 2007-02-23 04:53:48Z raasch
111	! +handling of top fluxes
112	!
113	! RCS Log replace by Id keyword, revision history cleaned up
114	!
115	! Revision 1.49 2006/08/22 15:59:07 raasch
116	! No optimization of this file on the ibmy (Yonsei Univ.)
117	!
118	! Revision 1.1 1998/03/09 16:22:22 raasch
119	! Initial revision
120	!
121	!
122	! Description:
123	! ------------
124	! Allocation of arrays and initialization of the 3D model via
125	! a) pre-run the 1D model
126	! or
127	! b) pre-set constant linear profiles
128	! or
129	! c) read values of a previous run
130	!------------------------------------------------------------------------------!
131
132	USE advec_ws
133	USE arrays_3d
134	USE averaging
135	USE cloud_parameters
136	USE constants
137	USE control_parameters
138	USE cpulog
139	USE indices
140	USE interfaces
141	USE model_1d
142	USE netcdf_control
143	USE particle_attributes
144	USE pegrid
145	USE profil_parameter
146	USE random_function_mod
147	USE statistics
148
149	IMPLICIT NONE
150
151	INTEGER :: i, ind_array(1), j, k, sr
152
153	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l
154
155	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l, &
156	ngp_2dh_s_inner_l
157
158	REAL :: a, b
159
160	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
161
162	REAL, DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l, ngp_3d_inner_tmp
163
164
165	!
166	!-- Allocate arrays
167	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
168	ngp_3d(0:statistic_regions), &
169	ngp_3d_inner(0:statistic_regions), &
170	ngp_3d_inner_l(0:statistic_regions), &
171	ngp_3d_inner_tmp(0:statistic_regions), &
172	sums_divnew_l(0:statistic_regions), &
173	sums_divold_l(0:statistic_regions) )
174	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt) )
175	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
176	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
177	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
178	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
179	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
180	sums(nzb:nzt+1,pr_palm+max_pr_user), &
181	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
182	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
183	sums_up_fraction_l(10,3,0:statistic_regions), &
184	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
185	ts_value(dots_max,0:statistic_regions) )
186	ALLOCATE( km_damp_x(nxlg:nxrg), km_damp_y(nysg:nyng) )
187
188	ALLOCATE( rif_1(nysg:nyng,nxlg:nxrg), shf_1(nysg:nyng,nxlg:nxrg), &
189	ts(nysg:nyng,nxlg:nxrg), tswst_1(nysg:nyng,nxlg:nxrg), &
190	us(nysg:nyng,nxlg:nxrg), usws_1(nysg:nyng,nxlg:nxrg), &
191	uswst_1(nysg:nyng,nxlg:nxrg), &
192	vsws_1(nysg:nyng,nxlg:nxrg), &
193	vswst_1(nysg:nyng,nxlg:nxrg), z0(nysg:nyng,nxlg:nxrg) )
194
195	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
196	!
197	!-- Leapfrog scheme needs two timelevels of diffusion quantities
198	ALLOCATE( rif_2(nysg:nyng,nxlg:nxrg), &
199	shf_2(nysg:nyng,nxlg:nxrg), &
200	tswst_2(nysg:nyng,nxlg:nxrg), &
201	usws_2(nysg:nyng,nxlg:nxrg), &
202	uswst_2(nysg:nyng,nxlg:nxrg), &
203	vswst_2(nysg:nyng,nxlg:nxrg), &
204	vsws_2(nysg:nyng,nxlg:nxrg) )
205	ENDIF
206
207	ALLOCATE( d(nzb+1:nzta,nys:nyna,nxl:nxra), &
208	e_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
209	e_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
210	e_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
211	kh_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
212	km_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
213	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
214	pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
215	pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
216	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
217	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
218	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
219	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
220	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
221	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
222	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
223	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
224	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
225	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
226	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
227	!
228	!-- Following array is required for perturbation pressure within the iterative
229	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
230	!-- the weighted average of the substeps and cannot be used in the Poisson
231	!-- solver.
232	IF ( psolver == 'sor' ) THEN
233	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
234	ELSEIF ( psolver == 'multigrid' ) THEN
235	!
236	!-- For performance reasons, multigrid is using one ghost layer only
237	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
238	ENDIF
239
240	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
241	ALLOCATE( kh_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
242	km_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
243	ENDIF
244
245	IF ( humidity .OR. passive_scalar ) THEN
246	!
247	!-- 2D-humidity/scalar arrays
248	ALLOCATE ( qs(nysg:nyng,nxlg:nxrg), &
249	qsws_1(nysg:nyng,nxlg:nxrg), &
250	qswst_1(nysg:nyng,nxlg:nxrg) )
251
252	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
253	ALLOCATE( qsws_2(nysg:nyng,nxlg:nxrg), &
254	qswst_2(nysg:nyng,nxlg:nxrg) )
255	ENDIF
256	!
257	!-- 3D-humidity/scalar arrays
258	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
259	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
260	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
261
262	!
263	!-- 3D-arrays needed for humidity only
264	IF ( humidity ) THEN
265	ALLOCATE( vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
266
267	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
268	ALLOCATE( vpt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
269	ENDIF
270
271	IF ( cloud_physics ) THEN
272	!
273	!-- Liquid water content
274	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
275	!
276	!-- Precipitation amount and rate (only needed if output is switched)
277	ALLOCATE( precipitation_amount(nysg:nyng,nxlg:nxrg), &
278	precipitation_rate(nysg:nyng,nxlg:nxrg) )
279	ENDIF
280
281	IF ( cloud_droplets ) THEN
282	!
283	!-- Liquid water content, change in liquid water content,
284	!-- real volume of particles (with weighting), volume of particles
285	ALLOCATE ( ql_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
286	ql_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
287	ql_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
288	ql_vp(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
289	ENDIF
290
291	ENDIF
292
293	ENDIF
294
295	IF ( ocean ) THEN
296	ALLOCATE( saswsb_1(nysg:nyng,nxlg:nxrg), &
297	saswst_1(nysg:nyng,nxlg:nxrg) )
298	ALLOCATE( prho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
299	rho_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
300	sa_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
301	sa_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
302	sa_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
303	prho => prho_1
304	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
305	! density to be apointer
306	IF ( humidity_remote ) THEN
307	ALLOCATE( qswst_remote(nysg:nyng,nxlg:nxrg))
308	qswst_remote = 0.0
309	ENDIF
310	ENDIF
311
312	!
313	!-- 3D-array for storing the dissipation, needed for calculating the sgs
314	!-- particle velocities
315	IF ( use_sgs_for_particles ) THEN
316	ALLOCATE ( diss(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
317	ELSE
318	ALLOCATE ( diss(2,2,2) ) ! required because diss is used as a
319	! formal parameter
320	ENDIF
321
322	IF ( dt_dosp /= 9999999.9 ) THEN
323	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
324	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
325	spectrum_x = 0.0
326	spectrum_y = 0.0
327	ENDIF
328
329	!
330	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
331	IF ( plant_canopy ) THEN
332	ALLOCATE ( lad_s(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
333	lad_u(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
334	lad_v(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
335	lad_w(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
336	cdc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
337
338	IF ( passive_scalar ) THEN
339	ALLOCATE ( sls(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
340	sec(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
341	ENDIF
342
343	IF ( cthf /= 0.0 ) THEN
344	ALLOCATE ( lai(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
345	canopy_heat_flux(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
346	ENDIF
347
348	ENDIF
349
350	!
351	!-- 4D-array for storing the Rif-values at vertical walls
352	IF ( topography /= 'flat' ) THEN
353	ALLOCATE( rif_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg,1:4) )
354	rif_wall = 0.0
355	ENDIF
356
357	!
358	!-- Arrays to store velocity data from t-dt and the phase speeds which
359	!-- are needed for radiation boundary conditions
360	IF ( outflow_l ) THEN
361	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
362	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
363	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
364	ENDIF
365	IF ( outflow_r ) THEN
366	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
367	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
368	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
369	ENDIF
370	IF ( outflow_l .OR. outflow_r ) THEN
371	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
372	c_w(nzb:nzt+1,nysg:nyng) )
373	ENDIF
374	IF ( outflow_s ) THEN
375	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
376	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
377	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
378	ENDIF
379	IF ( outflow_n ) THEN
380	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
381	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
382	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
383	ENDIF
384	IF ( outflow_s .OR. outflow_n ) THEN
385	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
386	c_w(nzb:nzt+1,nxlg:nxrg) )
387	ENDIF
388
389	!
390	!-- Initial assignment of the pointers
391	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
392
393	rif_m => rif_1; rif => rif_2
394	shf_m => shf_1; shf => shf_2
395	tswst_m => tswst_1; tswst => tswst_2
396	usws_m => usws_1; usws => usws_2
397	uswst_m => uswst_1; uswst => uswst_2
398	vsws_m => vsws_1; vsws => vsws_2
399	vswst_m => vswst_1; vswst => vswst_2
400	e_m => e_1; e => e_2; e_p => e_3; te_m => e_3
401	kh_m => kh_1; kh => kh_2
402	km_m => km_1; km => km_2
403	pt_m => pt_1; pt => pt_2; pt_p => pt_3; tpt_m => pt_3
404	u_m => u_1; u => u_2; u_p => u_3; tu_m => u_3
405	v_m => v_1; v => v_2; v_p => v_3; tv_m => v_3
406	w_m => w_1; w => w_2; w_p => w_3; tw_m => w_3
407
408	IF ( humidity .OR. passive_scalar ) THEN
409	qsws_m => qsws_1; qsws => qsws_2
410	qswst_m => qswst_1; qswst => qswst_2
411	q_m => q_1; q => q_2; q_p => q_3; tq_m => q_3
412	IF ( humidity ) vpt_m => vpt_1; vpt => vpt_2
413	IF ( cloud_physics ) ql => ql_1
414	IF ( cloud_droplets ) THEN
415	ql => ql_1
416	ql_c => ql_2
417	ENDIF
418	ENDIF
419
420	ELSE
421
422	rif => rif_1
423	shf => shf_1
424	tswst => tswst_1
425	usws => usws_1
426	uswst => uswst_1
427	vsws => vsws_1
428	vswst => vswst_1
429	e => e_1; e_p => e_2; te_m => e_3; e_m => e_3
430	kh => kh_1
431	km => km_1
432	pt => pt_1; pt_p => pt_2; tpt_m => pt_3; pt_m => pt_3
433	u => u_1; u_p => u_2; tu_m => u_3; u_m => u_3
434	v => v_1; v_p => v_2; tv_m => v_3; v_m => v_3
435	w => w_1; w_p => w_2; tw_m => w_3; w_m => w_3
436
437	IF ( humidity .OR. passive_scalar ) THEN
438	qsws => qsws_1
439	qswst => qswst_1
440	q => q_1; q_p => q_2; tq_m => q_3; q_m => q_3
441	IF ( humidity ) vpt => vpt_1
442	IF ( cloud_physics ) ql => ql_1
443	IF ( cloud_droplets ) THEN
444	ql => ql_1
445	ql_c => ql_2
446	ENDIF
447	ENDIF
448
449	IF ( ocean ) THEN
450	saswsb => saswsb_1
451	saswst => saswst_1
452	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
453	ENDIF
454
455	ENDIF
456
457	!
458	!-- Allocate arrays containing the RK coefficient for calculation of
459	!-- perturbation pressure and turbulent fluxes. At this point values are
460	!-- set for pressure calculation during initialization (where no timestep
461	!-- is done). Further below the values needed within the timestep scheme
462	!-- will be set.
463	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
464	weight_pres(1:intermediate_timestep_count_max) )
465	weight_substep = 1.0
466	weight_pres = 1.0
467	intermediate_timestep_count = 1 ! needed when simulated_time = 0.0
468
469	!
470	!-- Initialize model variables
471	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
472	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
473	!
474	!-- First model run of a possible job queue.
475	!-- Initial profiles of the variables must be computes.
476	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
477	!
478	!-- Use solutions of the 1D model as initial profiles,
479	!-- start 1D model
480	CALL init_1d_model
481	!
482	!-- Transfer initial profiles to the arrays of the 3D model
483	DO i = nxlg, nxrg
484	DO j = nysg, nyng
485	e(:,j,i) = e1d
486	kh(:,j,i) = kh1d
487	km(:,j,i) = km1d
488	pt(:,j,i) = pt_init
489	u(:,j,i) = u1d
490	v(:,j,i) = v1d
491	ENDDO
492	ENDDO
493
494	IF ( humidity .OR. passive_scalar ) THEN
495	DO i = nxlg, nxrg
496	DO j = nysg, nyng
497	q(:,j,i) = q_init
498	ENDDO
499	ENDDO
500	ENDIF
501
502	IF ( .NOT. constant_diffusion ) THEN
503	DO i = nxlg, nxrg
504	DO j = nysg, nyng
505	e(:,j,i) = e1d
506	ENDDO
507	ENDDO
508	!
509	!-- Store initial profiles for output purposes etc.
510	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
511
512	IF ( prandtl_layer ) THEN
513	rif = rif1d(nzb+1)
514	ts = 0.0 ! could actually be computed more accurately in the
515	! 1D model. Update when opportunity arises.
516	us = us1d
517	usws = usws1d
518	vsws = vsws1d
519	ELSE
520	ts = 0.0 ! must be set, because used in
521	rif = 0.0 ! flowste
522	us = 0.0
523	usws = 0.0
524	vsws = 0.0
525	ENDIF
526
527	ELSE
528	e = 0.0 ! must be set, because used in
529	rif = 0.0 ! flowste
530	ts = 0.0
531	us = 0.0
532	usws = 0.0
533	vsws = 0.0
534	ENDIF
535	uswst = top_momentumflux_u
536	vswst = top_momentumflux_v
537
538	!
539	!-- In every case qs = 0.0 (see also pt)
540	!-- This could actually be computed more accurately in the 1D model.
541	!-- Update when opportunity arises!
542	IF ( humidity .OR. passive_scalar ) qs = 0.0
543
544	!
545	!-- inside buildings set velocities back to zero
546	IF ( topography /= 'flat' ) THEN
547	DO i = nxl-1, nxr+1
548	DO j = nys-1, nyn+1
549	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
550	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
551	ENDDO
552	ENDDO
553
554	!
555	!-- WARNING: The extra boundary conditions set after running the
556	!-- ------- 1D model impose an error on the divergence one layer
557	!-- below the topography; need to correct later
558	!-- ATTENTION: Provisional correction for Piacsek & Williams
559	!-- --------- advection scheme: keep u and v zero one layer below
560	!-- the topography.
561	!
562	!-- Following was removed, because mirror boundary condition are
563	!-- replaced by dirichlet boundary conditions
564	!
565	! IF ( ibc_uv_b == 0 ) THEN
566	!!
567	!!-- Satisfying the Dirichlet condition with an extra layer below
568	!!-- the surface where the u and v component change their sign.
569	! DO i = nxl-1, nxr+1
570	! DO j = nys-1, nyn+1
571	! IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = -u(1,j,i)
572	! IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = -v(1,j,i)
573	! ENDDO
574	! ENDDO
575	!
576	! ELSE
577	IF ( ibc_uv_b == 1 ) THEN
578	!
579	!-- Neumann condition
580	DO i = nxl-1, nxr+1
581	DO j = nys-1, nyn+1
582	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
583	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
584	ENDDO
585	ENDDO
586
587	ENDIF
588
589	ENDIF
590
591	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
592	THEN
593	!
594	!-- Use constructed initial profiles (velocity constant with height,
595	!-- temperature profile with constant gradient)
596	DO i = nxlg, nxrg
597	DO j = nysg, nyng
598	pt(:,j,i) = pt_init
599	u(:,j,i) = u_init
600	v(:,j,i) = v_init
601	ENDDO
602	ENDDO
603
604	!
605	!-- Set initial horizontal velocities at the lowest computational grid
606	!-- levels to zero in order to avoid too small time steps caused by the
607	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
608	!-- in the limiting formula!). The original values are stored to be later
609	!-- used for volume flow control.
610	DO i = nxlg, nxrg
611	DO j = nysg, nyng
612	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
613	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
614	ENDDO
615	ENDDO
616
617	IF ( humidity .OR. passive_scalar ) THEN
618	DO i = nxlg, nxrg
619	DO j = nysg, nyng
620	q(:,j,i) = q_init
621	ENDDO
622	ENDDO
623	ENDIF
624
625	IF ( ocean ) THEN
626	DO i = nxlg, nxrg
627	DO j = nysg, nyng
628	sa(:,j,i) = sa_init
629	ENDDO
630	ENDDO
631	ENDIF
632
633	IF ( constant_diffusion ) THEN
634	km = km_constant
635	kh = km / prandtl_number
636	e = 0.0
637	ELSEIF ( e_init > 0.0 ) THEN
638	DO k = nzb+1, nzt
639	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
640	ENDDO
641	km(nzb,:,:) = km(nzb+1,:,:)
642	km(nzt+1,:,:) = km(nzt,:,:)
643	kh = km / prandtl_number
644	e = e_init
645	ELSE
646	IF ( .NOT. ocean ) THEN
647	kh = 0.01 ! there must exist an initial diffusion, because
648	km = 0.01 ! otherwise no TKE would be produced by the
649	! production terms, as long as not yet
650	! e = (u/cm)*2 at k=nzb+1
651	ELSE
652	kh = 0.00001
653	km = 0.00001
654	ENDIF
655	e = 0.0
656	ENDIF
657	rif = 0.0
658	ts = 0.0
659	us = 0.0
660	usws = 0.0
661	uswst = top_momentumflux_u
662	vsws = 0.0
663	vswst = top_momentumflux_v
664	IF ( humidity .OR. passive_scalar ) qs = 0.0
665
666	!
667	!-- Compute initial temperature field and other constants used in case
668	!-- of a sloping surface
669	IF ( sloping_surface ) CALL init_slope
670
671	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
672	THEN
673	!
674	!-- Initialization will completely be done by the user
675	CALL user_init_3d_model
676
677	ENDIF
678	!
679	!-- Bottom boundary
680	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
681	u(nzb,:,:) = 0.0
682	v(nzb,:,:) = 0.0
683	ENDIF
684
685	!
686	!-- Apply channel flow boundary condition
687	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
688
689	u(nzt+1,:,:) = 0.0
690	v(nzt+1,:,:) = 0.0
691
692	!-- For the Dirichlet condition to be correctly applied at the top, set
693	!-- ug and vg to zero there
694	ug(nzt+1) = 0.0
695	vg(nzt+1) = 0.0
696
697	ENDIF
698
699	!
700	!-- Calculate virtual potential temperature
701	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
702
703	!
704	!-- Store initial profiles for output purposes etc.
705	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
706	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
707	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
708	hom(nzb,1,5,:) = 0.0
709	hom(nzb,1,6,:) = 0.0
710	ENDIF
711	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
712	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
713	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
714
715	IF ( ocean ) THEN
716	!
717	!-- Store initial salinity profile
718	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
719	ENDIF
720
721	IF ( humidity ) THEN
722	!
723	!-- Store initial profile of total water content, virtual potential
724	!-- temperature
725	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
726	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
727	IF ( cloud_physics .OR. cloud_droplets ) THEN
728	!
729	!-- Store initial profile of specific humidity and potential
730	!-- temperature
731	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
732	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
733	ENDIF
734	ENDIF
735
736	IF ( passive_scalar ) THEN
737	!
738	!-- Store initial scalar profile
739	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
740	ENDIF
741
742	!
743	!-- Initialize fluxes at bottom surface
744	IF ( use_surface_fluxes ) THEN
745
746	IF ( constant_heatflux ) THEN
747	!
748	!-- Heat flux is prescribed
749	IF ( random_heatflux ) THEN
750	CALL disturb_heatflux
751	ELSE
752	shf = surface_heatflux
753	!
754	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
755	IF ( TRIM( topography ) /= 'flat' ) THEN
756	DO i = nxlg, nxrg
757	DO j = nysg, nyng
758	IF ( nzb_s_inner(j,i) /= 0 ) THEN
759	shf(j,i) = wall_heatflux(0)
760	ENDIF
761	ENDDO
762	ENDDO
763	ENDIF
764	ENDIF
765	IF ( ASSOCIATED( shf_m ) ) shf_m = shf
766	ENDIF
767
768	!
769	!-- Determine the near-surface water flux
770	IF ( humidity .OR. passive_scalar ) THEN
771	IF ( constant_waterflux ) THEN
772	qsws = surface_waterflux
773	!
774	!-- Over topography surface_waterflux is replaced by
775	!-- wall_humidityflux(0)
776	IF ( TRIM( topography ) /= 'flat' ) THEN
777	wall_qflux = wall_humidityflux
778	DO i = nxlg, nxrg
779	DO j = nysg, nyng
780	IF ( nzb_s_inner(j,i) /= 0 ) THEN
781	qsws(j,i) = wall_qflux(0)
782	ENDIF
783	ENDDO
784	ENDDO
785	ENDIF
786	IF ( ASSOCIATED( qsws_m ) ) qsws_m = qsws
787	ENDIF
788	ENDIF
789
790	ENDIF
791
792	!
793	!-- Initialize fluxes at top surface
794	!-- Currently, only the heatflux and salinity flux can be prescribed.
795	!-- The latent flux is zero in this case!
796	IF ( use_top_fluxes ) THEN
797
798	IF ( constant_top_heatflux ) THEN
799	!
800	!-- Heat flux is prescribed
801	tswst = top_heatflux
802	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
803
804	IF ( humidity .OR. passive_scalar ) THEN
805	qswst = 0.0
806	IF ( ASSOCIATED( qswst_m ) ) qswst_m = qswst
807	ENDIF
808
809	IF ( ocean ) THEN
810	saswsb = bottom_salinityflux
811	saswst = top_salinityflux
812	ENDIF
813	ENDIF
814
815	!
816	!-- Initialization in case of a coupled model run
817	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
818	tswst = 0.0
819	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
820	ENDIF
821
822	ENDIF
823
824	!
825	!-- Initialize Prandtl layer quantities
826	IF ( prandtl_layer ) THEN
827
828	z0 = roughness_length
829
830	IF ( .NOT. constant_heatflux ) THEN
831	!
832	!-- Surface temperature is prescribed. Here the heat flux cannot be
833	!-- simply estimated, because therefore rif, u* and theta* would have
834	!-- to be computed by iteration. This is why the heat flux is assumed
835	!-- to be zero before the first time step. It approaches its correct
836	!-- value in the course of the first few time steps.
837	shf = 0.0
838	IF ( ASSOCIATED( shf_m ) ) shf_m = 0.0
839	ENDIF
840
841	IF ( humidity .OR. passive_scalar ) THEN
842	IF ( .NOT. constant_waterflux ) THEN
843	qsws = 0.0
844	IF ( ASSOCIATED( qsws_m ) ) qsws_m = 0.0
845	ENDIF
846	ENDIF
847
848	ENDIF
849
850
851	!
852	!-- For the moment, vertical velocity is zero
853	w = 0.0
854
855	!
856	!-- Initialize array sums (must be defined in first call of pres)
857	sums = 0.0
858
859	!
860	!-- In case of iterative solvers, p must get an initial value
861	IF ( psolver == 'multigrid' .OR. psolver == 'sor' ) p = 0.0
862
863	!
864	!-- Treating cloud physics, liquid water content and precipitation amount
865	!-- are zero at beginning of the simulation
866	IF ( cloud_physics ) THEN
867	ql = 0.0
868	IF ( precipitation ) precipitation_amount = 0.0
869	ENDIF
870
871	!
872	!-- Initialize quantities for special advections schemes
873	CALL init_advec
874
875	!
876	!-- Impose vortex with vertical axis on the initial velocity profile
877	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
878	CALL init_rankine
879	ENDIF
880
881	!
882	!-- Impose temperature anomaly (advection test only)
883	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
884	CALL init_pt_anomaly
885	ENDIF
886
887	!
888	!-- If required, change the surface temperature at the start of the 3D run
889	IF ( pt_surface_initial_change /= 0.0 ) THEN
890	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
891	ENDIF
892
893	!
894	!-- If required, change the surface humidity/scalar at the start of the 3D
895	!-- run
896	IF ( ( humidity .OR. passive_scalar ) .AND. &
897	q_surface_initial_change /= 0.0 ) THEN
898	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
899	ENDIF
900
901	!
902	!-- Initialize the random number generator (from numerical recipes)
903	CALL random_function_ini
904
905	!
906	!-- Initialize old and new time levels.
907	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
908	e_m = e; pt_m = pt; u_m = u; v_m = v; w_m = w; kh_m = kh; km_m = km
909	ELSE
910	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
911	ENDIF
912	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
913
914	IF ( humidity .OR. passive_scalar ) THEN
915	IF ( ASSOCIATED( q_m ) ) q_m = q
916	IF ( timestep_scheme(1:5) == 'runge' ) tq_m = 0.0
917	q_p = q
918	IF ( humidity .AND. ASSOCIATED( vpt_m ) ) vpt_m = vpt
919	ENDIF
920
921	IF ( ocean ) THEN
922	tsa_m = 0.0
923	sa_p = sa
924	ENDIF
925
926
927	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
928	TRIM( initializing_actions ) == 'cyclic_fill' ) &
929	THEN
930	!
931	!-- When reading data for cyclic fill of 3D prerun data, first read
932	!-- some of the global variables from restart file
933	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
934
935	CALL read_parts_of_var_list
936	CALL close_file( 13 )
937
938	!
939	!-- Initialization of the turbulence recycling method
940	IF ( turbulent_inflow ) THEN
941	!
942	!-- Store temporally and horizontally averaged vertical profiles to be
943	!-- used as mean inflow profiles
944	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
945
946	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
947	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
948	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
949	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
950
951	!
952	!-- Use these mean profiles for the inflow (provided that Dirichlet
953	!-- conditions are used)
954	IF ( inflow_l ) THEN
955	DO j = nysg, nyng
956	DO k = nzb, nzt+1
957	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
958	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
959	w(k,j,nxlg:-1) = 0.0
960	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
961	e(k,j,nxlg:-1) = mean_inflow_profiles(k,5)
962	ENDDO
963	ENDDO
964	ENDIF
965
966	!
967	!-- Calculate the damping factors to be used at the inflow. For a
968	!-- turbulent inflow the turbulent fluctuations have to be limited
969	!-- vertically because otherwise the turbulent inflow layer will grow
970	!-- in time.
971	IF ( inflow_damping_height == 9999999.9 ) THEN
972	!
973	!-- Default: use the inversion height calculated by the prerun; if
974	!-- this is zero, inflow_damping_height must be explicitly
975	!-- specified.
976	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0 ) THEN
977	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
978	ELSE
979	WRITE( message_string, * ) 'inflow_damping_height must be ',&
980	'explicitly specified because&the inversion height ', &
981	'calculated by the prerun is zero.'
982	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
983	ENDIF
984
985	ENDIF
986
987	IF ( inflow_damping_width == 9999999.9 ) THEN
988	!
989	!-- Default for the transition range: one tenth of the undamped
990	!-- layer
991	inflow_damping_width = 0.1 * inflow_damping_height
992
993	ENDIF
994
995	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
996
997	DO k = nzb, nzt+1
998
999	IF ( zu(k) <= inflow_damping_height ) THEN
1000	inflow_damping_factor(k) = 1.0
1001	ELSEIF ( zu(k) <= inflow_damping_height + &
1002	inflow_damping_width ) THEN
1003	inflow_damping_factor(k) = 1.0 - &
1004	( zu(k) - inflow_damping_height ) / &
1005	inflow_damping_width
1006	ELSE
1007	inflow_damping_factor(k) = 0.0
1008	ENDIF
1009
1010	ENDDO
1011	ENDIF
1012
1013	ENDIF
1014
1015	!
1016	!-- Read binary data from restart file
1017	CALL read_3d_binary
1018
1019	!
1020	!-- Inside buildings set velocities and TKE back to zero
1021	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1022	topography /= 'flat' ) THEN
1023	!
1024	!-- Inside buildings set velocities and TKE back to zero.
1025	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1026	!-- maybe revise later.
1027	IF ( timestep_scheme(1:5) == 'runge' ) THEN
1028	DO i = nxlg, nxrg
1029	DO j = nysg, nyng
1030	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1031	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1032	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1033	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1034	u_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1035	v_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1036	w_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1037	e_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1038	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1039	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1040	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1041	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1042	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1043	ENDDO
1044	ENDDO
1045	ELSE
1046	DO i = nxlg, nxrg
1047	DO j = nysg, nyng
1048	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1049	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1050	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1051	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1052	u_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1053	v_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1054	w_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1055	e_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1056	u_p(nzb:nzb_u_inner(j,i),j,i) = 0.0
1057	v_p(nzb:nzb_v_inner(j,i),j,i) = 0.0
1058	w_p(nzb:nzb_w_inner(j,i),j,i) = 0.0
1059	e_p(nzb:nzb_w_inner(j,i),j,i) = 0.0
1060	ENDDO
1061	ENDDO
1062	ENDIF
1063
1064	ENDIF
1065
1066	!
1067	!-- Calculate initial temperature field and other constants used in case
1068	!-- of a sloping surface
1069	IF ( sloping_surface ) CALL init_slope
1070
1071	!
1072	!-- Initialize new time levels (only done in order to set boundary values
1073	!-- including ghost points)
1074	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1075	IF ( humidity .OR. passive_scalar ) q_p = q
1076	IF ( ocean ) sa_p = sa
1077
1078	!
1079	!-- Allthough tendency arrays are set in prognostic_equations, they have
1080	!-- have to be predefined here because they are used (but multiplied with 0)
1081	!-- there before they are set.
1082	IF ( timestep_scheme(1:5) == 'runge' ) THEN
1083	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1084	IF ( humidity .OR. passive_scalar ) tq_m = 0.0
1085	IF ( ocean ) tsa_m = 0.0
1086	ENDIF
1087
1088	ELSE
1089	!
1090	!-- Actually this part of the programm should not be reached
1091	message_string = 'unknown initializing problem'
1092	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1093	ENDIF
1094
1095
1096	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1097	!
1098	!-- Initialize old timelevels needed for radiation boundary conditions
1099	IF ( outflow_l ) THEN
1100	u_m_l(:,:,:) = u(:,:,1:2)
1101	v_m_l(:,:,:) = v(:,:,0:1)
1102	w_m_l(:,:,:) = w(:,:,0:1)
1103	ENDIF
1104	IF ( outflow_r ) THEN
1105	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1106	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1107	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1108	ENDIF
1109	IF ( outflow_s ) THEN
1110	u_m_s(:,:,:) = u(:,0:1,:)
1111	v_m_s(:,:,:) = v(:,1:2,:)
1112	w_m_s(:,:,:) = w(:,0:1,:)
1113	ENDIF
1114	IF ( outflow_n ) THEN
1115	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1116	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1117	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1118	ENDIF
1119
1120	ENDIF
1121
1122	!
1123	!-- Calculate the initial volume flow at the right and north boundary
1124	IF ( conserve_volume_flow ) THEN
1125
1126	volume_flow_initial_l = 0.0
1127	volume_flow_area_l = 0.0
1128
1129	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1130
1131	IF ( nxr == nx ) THEN
1132	DO j = nys, nyn
1133	DO k = nzb_2d(j,nx)+1, nzt
1134	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1135	hom_sum(k,1,0) * dzw(k)
1136	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1137	ENDDO
1138	ENDDO
1139	ENDIF
1140
1141	IF ( nyn == ny ) THEN
1142	DO i = nxl, nxr
1143	DO k = nzb_2d(ny,i)+1, nzt
1144	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1145	hom_sum(k,2,0) * dzw(k)
1146	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1147	ENDDO
1148	ENDDO
1149	ENDIF
1150
1151	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1152
1153	IF ( nxr == nx ) THEN
1154	DO j = nys, nyn
1155	DO k = nzb_2d(j,nx)+1, nzt
1156	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1157	u(k,j,nx) * dzw(k)
1158	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k)
1159	ENDDO
1160	ENDDO
1161	ENDIF
1162
1163	IF ( nyn == ny ) THEN
1164	DO i = nxl, nxr
1165	DO k = nzb_2d(ny,i)+1, nzt
1166	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1167	v(k,ny,i) * dzw(k)
1168	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k)
1169	ENDDO
1170	ENDDO
1171	ENDIF
1172
1173	ENDIF
1174
1175	#if defined( __parallel )
1176	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1), &
1177	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1178	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1179	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1180
1181	#else
1182	volume_flow_initial = volume_flow_initial_l
1183	volume_flow_area = volume_flow_area_l
1184	#endif
1185
1186	!
1187	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
1188	!-- from u\|v_bulk instead
1189	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
1190	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
1191	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
1192	ENDIF
1193
1194	ENDIF
1195
1196
1197	!
1198	!-- Impose random perturbation on the horizontal velocity field and then
1199	!-- remove the divergences from the velocity field at the initial stage
1200	IF ( create_disturbances .AND. &
1201	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
1202	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
1203
1204	CALL disturb_field( nzb_u_inner, tend, u )
1205	CALL disturb_field( nzb_v_inner, tend, v )
1206	n_sor = nsor_ini
1207	CALL pres
1208	n_sor = nsor
1209	ENDIF
1210
1211	!
1212	!-- Initialization of the leaf area density
1213	IF ( plant_canopy ) THEN
1214
1215	SELECT CASE ( TRIM( canopy_mode ) )
1216
1217	CASE( 'block' )
1218
1219	DO i = nxlg, nxrg
1220	DO j = nysg, nyng
1221	lad_s(:,j,i) = lad(:)
1222	cdc(:,j,i) = drag_coefficient
1223	IF ( passive_scalar ) THEN
1224	sls(:,j,i) = leaf_surface_concentration
1225	sec(:,j,i) = scalar_exchange_coefficient
1226	ENDIF
1227	ENDDO
1228	ENDDO
1229
1230	CASE DEFAULT
1231
1232	!
1233	!-- The DEFAULT case is reached either if the parameter
1234	!-- canopy mode contains a wrong character string or if the
1235	!-- user has coded a special case in the user interface.
1236	!-- There, the subroutine user_init_plant_canopy checks
1237	!-- which of these two conditions applies.
1238	CALL user_init_plant_canopy
1239
1240	END SELECT
1241
1242	CALL exchange_horiz( lad_s, nbgp )
1243	CALL exchange_horiz( cdc, nbgp )
1244
1245	IF ( passive_scalar ) THEN
1246	CALL exchange_horiz( sls, nbgp )
1247	CALL exchange_horiz( sec, nbgp )
1248	ENDIF
1249
1250	!
1251	!-- Sharp boundaries of the plant canopy in horizontal directions
1252	!-- In vertical direction the interpolation is retained, as the leaf
1253	!-- area density is initialised by prescribing a vertical profile
1254	!-- consisting of piecewise linear segments. The upper boundary
1255	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1256
1257	DO i = nxl, nxr
1258	DO j = nys, nyn
1259	DO k = nzb, nzt+1
1260	IF ( lad_s(k,j,i) > 0.0 ) THEN
1261	lad_u(k,j,i) = lad_s(k,j,i)
1262	lad_u(k,j,i+1) = lad_s(k,j,i)
1263	lad_v(k,j,i) = lad_s(k,j,i)
1264	lad_v(k,j+1,i) = lad_s(k,j,i)
1265	ENDIF
1266	ENDDO
1267	DO k = nzb, nzt
1268	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1269	ENDDO
1270	ENDDO
1271	ENDDO
1272
1273	lad_w(pch_index,:,:) = 0.0
1274	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1275
1276	CALL exchange_horiz( lad_u, nbgp )
1277	CALL exchange_horiz( lad_v, nbgp )
1278	CALL exchange_horiz( lad_w, nbgp )
1279
1280	!
1281	!-- Initialisation of the canopy heat source distribution
1282	IF ( cthf /= 0.0 ) THEN
1283	!
1284	!-- Piecewise evaluation of the leaf area index by
1285	!-- integration of the leaf area density
1286	lai(:,:,:) = 0.0
1287	DO i = nxlg, nxrg
1288	DO j = nysg, nyng
1289	DO k = pch_index-1, 0, -1
1290	lai(k,j,i) = lai(k+1,j,i) + &
1291	( 0.5 * ( lad_w(k+1,j,i) + &
1292	lad_s(k+1,j,i) ) * &
1293	( zw(k+1) - zu(k+1) ) ) + &
1294	( 0.5 * ( lad_w(k,j,i) + &
1295	lad_s(k+1,j,i) ) * &
1296	( zu(k+1) - zw(k) ) )
1297	ENDDO
1298	ENDDO
1299	ENDDO
1300
1301	!
1302	!-- Evaluation of the upward kinematic vertical heat flux within the
1303	!-- canopy
1304	DO i = nxlg, nxrg
1305	DO j = nysg, nyng
1306	DO k = 0, pch_index
1307	canopy_heat_flux(k,j,i) = cthf * &
1308	exp( -0.6 * lai(k,j,i) )
1309	ENDDO
1310	ENDDO
1311	ENDDO
1312
1313	!
1314	!-- The near surface heat flux is derived from the heat flux
1315	!-- distribution within the canopy
1316	shf(:,:) = canopy_heat_flux(0,:,:)
1317
1318	IF ( ASSOCIATED( shf_m ) ) shf_m = shf
1319
1320	ENDIF
1321
1322	ENDIF
1323
1324	!
1325	!-- If required, initialize dvrp-software
1326	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
1327
1328	IF ( ocean ) THEN
1329	!
1330	!-- Initialize quantities needed for the ocean model
1331	CALL init_ocean
1332
1333	ELSE
1334	!
1335	!-- Initialize quantities for handling cloud physics
1336	!-- This routine must be called before init_particles, because
1337	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1338	!-- init_particles) is not defined.
1339	CALL init_cloud_physics
1340	ENDIF
1341
1342	!
1343	!-- If required, initialize particles
1344	IF ( particle_advection ) CALL init_particles
1345
1346	!
1347	!-- Initialize the ws-scheme.
1348	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
1349
1350	!
1351	!-- Setting weighting factors for calculation of perturbation pressure
1352	!-- and turbulent quantities from the RK substeps
1353	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
1354
1355	weight_substep(1) = 0.166666666666666
1356	weight_substep(2) = 0.3
1357	weight_substep(3) = 0.533333333333333
1358
1359	weight_pres(1) = 0.333333333333333
1360	weight_pres(2) = 0.416666666666666
1361	weight_pres(3) = 0.25
1362
1363	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
1364
1365	weight_substep(1) = 0.5
1366	weight_substep(2) = 0.5
1367
1368	weight_pres(1) = 0.5
1369	weight_pres(2) = 0.5
1370
1371	ELSE ! for Euler- and leapfrog-method
1372
1373	weight_substep(1) = 1.0
1374	weight_pres(1) = 1.0
1375
1376	ENDIF
1377
1378	!
1379	!-- Initialize Rayleigh damping factors
1380	rdf = 0.0
1381	IF ( rayleigh_damping_factor /= 0.0 ) THEN
1382	IF ( .NOT. ocean ) THEN
1383	DO k = nzb+1, nzt
1384	IF ( zu(k) >= rayleigh_damping_height ) THEN
1385	rdf(k) = rayleigh_damping_factor * &
1386	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
1387	/ ( zu(nzt) - rayleigh_damping_height ) )&
1388	)**2
1389	ENDIF
1390	ENDDO
1391	ELSE
1392	DO k = nzt, nzb+1, -1
1393	IF ( zu(k) <= rayleigh_damping_height ) THEN
1394	rdf(k) = rayleigh_damping_factor * &
1395	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
1396	/ ( rayleigh_damping_height - zu(nzb+1)))&
1397	)**2
1398	ENDIF
1399	ENDDO
1400	ENDIF
1401	ENDIF
1402
1403	!
1404	!-- Initialize the starting level and the vertical smoothing factor used for
1405	!-- the external pressure gradient
1406	dp_smooth_factor = 1.0
1407	IF ( dp_external ) THEN
1408	!
1409	!-- Set the starting level dp_level_ind_b only if it has not been set before
1410	!-- (e.g. in init_grid).
1411	IF ( dp_level_ind_b == 0 ) THEN
1412	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1413	dp_level_ind_b = ind_array(1) - 1 + nzb
1414	! MINLOC uses lower array bound 1
1415	ENDIF
1416	IF ( dp_smooth ) THEN
1417	dp_smooth_factor(:dp_level_ind_b) = 0.0
1418	DO k = dp_level_ind_b+1, nzt
1419	dp_smooth_factor(k) = 0.5 * ( 1.0 + SIN( pi * &
1420	( REAL( k - dp_level_ind_b ) / &
1421	REAL( nzt - dp_level_ind_b ) - 0.5 ) ) )
1422	ENDDO
1423	ENDIF
1424	ENDIF
1425
1426	!
1427	!-- Initialize diffusivities used within the outflow damping layer in case of
1428	!-- non-cyclic lateral boundaries. A linear increase is assumed over the first
1429	!-- half of the width of the damping layer
1430	IF ( bc_lr_dirrad ) THEN
1431
1432	DO i = nxlg, nxrg
1433	IF ( i >= nx - outflow_damping_width ) THEN
1434	km_damp_x(i) = km_damp_max * MIN( 1.0, &
1435	( i - ( nx - outflow_damping_width ) ) / &
1436	REAL( outflow_damping_width/2 ) &
1437	)
1438	ELSE
1439	km_damp_x(i) = 0.0
1440	ENDIF
1441	ENDDO
1442
1443	ELSEIF ( bc_lr_raddir ) THEN
1444
1445	DO i = nxlg, nxrg
1446	IF ( i <= outflow_damping_width ) THEN
1447	km_damp_x(i) = km_damp_max * MIN( 1.0, &
1448	( outflow_damping_width - i ) / &
1449	REAL( outflow_damping_width/2 ) &
1450	)
1451	ELSE
1452	km_damp_x(i) = 0.0
1453	ENDIF
1454	ENDDO
1455
1456	ENDIF
1457
1458	IF ( bc_ns_dirrad ) THEN
1459
1460	DO j = nysg, nyng
1461	IF ( j >= ny - outflow_damping_width ) THEN
1462	km_damp_y(j) = km_damp_max * MIN( 1.0, &
1463	( j - ( ny - outflow_damping_width ) ) / &
1464	REAL( outflow_damping_width/2 ) &
1465	)
1466	ELSE
1467	km_damp_y(j) = 0.0
1468	ENDIF
1469	ENDDO
1470
1471	ELSEIF ( bc_ns_raddir ) THEN
1472
1473	DO j = nysg, nyng
1474	IF ( j <= outflow_damping_width ) THEN
1475	km_damp_y(j) = km_damp_max * MIN( 1.0, &
1476	( outflow_damping_width - j ) / &
1477	REAL( outflow_damping_width/2 ) &
1478	)
1479	ELSE
1480	km_damp_y(j) = 0.0
1481	ENDIF
1482	ENDDO
1483
1484	ENDIF
1485
1486	!
1487	!-- Initialize local summation arrays for routine flow_statistics.
1488	!-- This is necessary because they may not yet have been initialized when they
1489	!-- are called from flow_statistics (or - depending on the chosen model run -
1490	!-- are never initialized)
1491	sums_divnew_l = 0.0
1492	sums_divold_l = 0.0
1493	sums_l_l = 0.0
1494	sums_up_fraction_l = 0.0
1495	sums_wsts_bc_l = 0.0
1496
1497	!
1498	!-- Pre-set masks for regional statistics. Default is the total model domain.
1499	rmask = 1.0
1500
1501	!
1502	!-- User-defined initializing actions. Check afterwards, if maximum number
1503	!-- of allowed timeseries is exceeded
1504	CALL user_init
1505
1506	IF ( dots_num > dots_max ) THEN
1507	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1508	' its maximum of dots_max = ', dots_max, &
1509	' &Please increase dots_max in modules.f90.'
1510	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1511	ENDIF
1512
1513	!
1514	!-- Input binary data file is not needed anymore. This line must be placed
1515	!-- after call of user_init!
1516	CALL close_file( 13 )
1517
1518	!
1519	!-- Compute total sum of active mask grid points
1520	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1521	!-- total domain
1522	!-- ngp_3d: number of grid points of the total domain
1523	ngp_2dh_outer_l = 0
1524	ngp_2dh_outer = 0
1525	ngp_2dh_s_inner_l = 0
1526	ngp_2dh_s_inner = 0
1527	ngp_2dh_l = 0
1528	ngp_2dh = 0
1529	ngp_3d_inner_l = 0.0
1530	ngp_3d_inner = 0
1531	ngp_3d = 0
1532	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1533
1534	DO sr = 0, statistic_regions
1535	DO i = nxl, nxr
1536	DO j = nys, nyn
1537	IF ( rmask(j,i,sr) == 1.0 ) THEN
1538	!
1539	!-- All xy-grid points
1540	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1541	!
1542	!-- xy-grid points above topography
1543	DO k = nzb_s_outer(j,i), nz + 1
1544	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1545	ENDDO
1546	DO k = nzb_s_inner(j,i), nz + 1
1547	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1548	ENDDO
1549	!
1550	!-- All grid points of the total domain above topography
1551	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1552	( nz - nzb_s_inner(j,i) + 2 )
1553	ENDIF
1554	ENDDO
1555	ENDDO
1556	ENDDO
1557
1558	sr = statistic_regions + 1
1559	#if defined( __parallel )
1560	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1561	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1562	comm2d, ierr )
1563	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1564	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1565	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1566	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1567	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1568	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1569	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1570	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1571	MPI_SUM, comm2d, ierr )
1572	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1573	#else
1574	ngp_2dh = ngp_2dh_l
1575	ngp_2dh_outer = ngp_2dh_outer_l
1576	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1577	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1578	#endif
1579
1580	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1581	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1582
1583	!
1584	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1585	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1586	!-- the respective subdomain lie below the surface topography
1587	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1588	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
1589	ngp_3d_inner(:) )
1590	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1591
1592	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1593
1594
1595	END SUBROUTINE init_3d_model

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