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source: palm/trunk/SOURCE/init_3d_model.f90 @ 671

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

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