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source: palm/trunk/SOURCE/init_3d_model.f90 @ 240

Last change on this file since 240 was 240, checked in by letzel, 15 years ago
External pressure gradient (check_parameters, init_3d_model, header, modules, parin, prognostic_equations) New topography case 'single_street_canyon'
Property svn:keywords set to `Id`
File size: 50.1 KB

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

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