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source: palm/trunk/SOURCE/init_3d_model.f90 @ 339

Last change on this file since 339 was 333, checked in by heinze, 15 years ago
bugfix in init_3_model concerning ngp_2dh_s_inner
Property svn:keywords set to `Id`
File size: 51.8 KB

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

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