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source: palm/trunk/SOURCE/init_3d_model.f90 @ 398

Last change on this file since 398 was 394, checked in by heinze, 15 years ago
var_ts is replaced by dots_max
Property svn:keywords set to `Id`
File size: 55.1 KB

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

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