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source: palm/trunk/SOURCE/init_3d_model.f90 @ 763

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

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