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source: palm/trunk/SOURCE/init_3d_model.f90 @ 626

Last change on this file since 626 was 623, checked in by raasch, 14 years ago
last commit documented
Property svn:keywords set to `Id`
File size: 56.8 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	!
10	!
11	! Former revisions:
12	! -----------------
13	! $Id: init_3d_model.f90 623 2010-12-10 08:52:17Z suehring $
14	!
15	! 622 2010-12-10 08:08:13Z raasch
16	! optional barriers included in order to speed up collective operations
17	!
18	! 560 2010-09-09 10:06:09Z weinreis
19	! bugfix: correction of calculating ngp_3d for 64 bit
20	!
21	! 485 2010-02-05 10:57:51Z raasch
22	! calculation of ngp_3d + ngp_3d_inner changed because they have now 64 bit
23	!
24	! 407 2009-12-01 15:01:15Z maronga
25	! var_ts is replaced by dots_max
26	! Enabled passive scalar/humidity wall fluxes for non-flat topography
27	!
28	! 388 2009-09-23 09:40:33Z raasch
29	! Initialization of prho added.
30	! bugfix: correction of initial volume flow for non-flat topography
31	! bugfix: zero initialization of arrays within buildings for 'cyclic_fill'
32	! bugfix: avoid that ngp_2dh_s_inner becomes zero
33	! initializing_actions='read_data_for_recycling' renamed to 'cyclic_fill', now
34	! independent of turbulent_inflow
35	! Output of messages replaced by message handling routine.
36	! Set the starting level and the vertical smoothing factor used for
37	! the external pressure gradient
38	! +conserve_volume_flow_mode: 'default', 'initial_profiles', 'inflow_profile'
39	! and 'bulk_velocity'
40	! If the inversion height calculated by the prerun is zero,
41	! inflow_damping_height must be explicitly specified.
42	!
43	! 181 2008-07-30 07:07:47Z raasch
44	! bugfix: zero assignments to tendency arrays in case of restarts,
45	! further extensions and modifications in the initialisation of the plant
46	! canopy model,
47	! allocation of hom_sum moved to parin, initialization of spectrum_x\|y directly
48	! after allocating theses arrays,
49	! read data for recycling added as new initialization option,
50	! dummy allocation for diss
51	!
52	! 138 2007-11-28 10:03:58Z letzel
53	! New counter ngp_2dh_s_inner.
54	! Allow new case bc_uv_t = 'dirichlet_0' for channel flow.
55	! Corrected calculation of initial volume flow for 'set_1d-model_profiles' and
56	! 'set_constant_profiles' in case of buildings in the reference cross-sections.
57	!
58	! 108 2007-08-24 15:10:38Z letzel
59	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
60	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
61	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
62	! Rayleigh damping for ocean, optionally calculate km and kh from initial
63	! TKE e_init
64	!
65	! 97 2007-06-21 08:23:15Z raasch
66	! Initialization of salinity, call of init_ocean
67	!
68	! 87 2007-05-22 15:46:47Z raasch
69	! var_hom and var_sum renamed pr_palm
70	!
71	! 75 2007-03-22 09:54:05Z raasch
72	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
73	! bugfix for cases with the outflow damping layer extending over more than one
74	! subdomain, moisture renamed humidity,
75	! new initializing action "by_user" calls user_init_3d_model,
76	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
77	! initial velocities at nzb+1 are regarded for volume
78	! flow control in case they have been set zero before (to avoid small timesteps)
79	! -uvmean_outflow, uxrp, vynp eliminated
80	!
81	! 19 2007-02-23 04:53:48Z raasch
82	! +handling of top fluxes
83	!
84	! RCS Log replace by Id keyword, revision history cleaned up
85	!
86	! Revision 1.49 2006/08/22 15:59:07 raasch
87	! No optimization of this file on the ibmy (Yonsei Univ.)
88	!
89	! Revision 1.1 1998/03/09 16:22:22 raasch
90	! Initial revision
91	!
92	!
93	! Description:
94	! ------------
95	! Allocation of arrays and initialization of the 3D model via
96	! a) pre-run the 1D model
97	! or
98	! b) pre-set constant linear profiles
99	! or
100	! c) read values of a previous run
101	!------------------------------------------------------------------------------!
102
103	USE arrays_3d
104	USE averaging
105	USE cloud_parameters
106	USE constants
107	USE control_parameters
108	USE cpulog
109	USE indices
110	USE interfaces
111	USE model_1d
112	USE netcdf_control
113	USE particle_attributes
114	USE pegrid
115	USE profil_parameter
116	USE random_function_mod
117	USE statistics
118
119	IMPLICIT NONE
120
121	INTEGER :: i, ind_array(1), j, k, sr
122
123	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l
124
125	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l, &
126	ngp_2dh_s_inner_l
127
128	REAL :: a, b
129
130	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
131
132	REAL, DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l, ngp_3d_inner_tmp
133
134
135	!
136	!-- Allocate arrays
137	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
138	ngp_3d(0:statistic_regions), &
139	ngp_3d_inner(0:statistic_regions), &
140	ngp_3d_inner_l(0:statistic_regions), &
141	ngp_3d_inner_tmp(0:statistic_regions), &
142	sums_divnew_l(0:statistic_regions), &
143	sums_divold_l(0:statistic_regions) )
144	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt) )
145	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
146	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
147	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
148	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
149	rmask(nys-1:nyn+1,nxl-1:nxr+1,0:statistic_regions), &
150	sums(nzb:nzt+1,pr_palm+max_pr_user), &
151	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
152	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
153	sums_up_fraction_l(10,3,0:statistic_regions), &
154	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
155	ts_value(dots_max,0:statistic_regions) )
156	ALLOCATE( km_damp_x(nxl-1:nxr+1), km_damp_y(nys-1:nyn+1) )
157
158	ALLOCATE( rif_1(nys-1:nyn+1,nxl-1:nxr+1), shf_1(nys-1:nyn+1,nxl-1:nxr+1), &
159	ts(nys-1:nyn+1,nxl-1:nxr+1), tswst_1(nys-1:nyn+1,nxl-1:nxr+1), &
160	us(nys-1:nyn+1,nxl-1:nxr+1), usws_1(nys-1:nyn+1,nxl-1:nxr+1), &
161	uswst_1(nys-1:nyn+1,nxl-1:nxr+1), &
162	vsws_1(nys-1:nyn+1,nxl-1:nxr+1), &
163	vswst_1(nys-1:nyn+1,nxl-1:nxr+1), z0(nys-1:nyn+1,nxl-1:nxr+1) )
164
165	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
166	!
167	!-- Leapfrog scheme needs two timelevels of diffusion quantities
168	ALLOCATE( rif_2(nys-1:nyn+1,nxl-1:nxr+1), &
169	shf_2(nys-1:nyn+1,nxl-1:nxr+1), &
170	tswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
171	usws_2(nys-1:nyn+1,nxl-1:nxr+1), &
172	uswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
173	vswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
174	vsws_2(nys-1:nyn+1,nxl-1:nxr+1) )
175	ENDIF
176
177	ALLOCATE( d(nzb+1:nzta,nys:nyna,nxl:nxra), &
178	e_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
179	e_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
180	e_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
181	kh_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
182	km_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
183	p(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
184	pt_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
185	pt_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
186	pt_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
187	tend(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
188	u_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
189	u_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
190	u_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
191	v_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
192	v_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
193	v_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
194	w_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
195	w_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
196	w_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
197
198	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
199	ALLOCATE( kh_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
200	km_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
201	ENDIF
202
203	IF ( humidity .OR. passive_scalar ) THEN
204	!
205	!-- 2D-humidity/scalar arrays
206	ALLOCATE ( qs(nys-1:nyn+1,nxl-1:nxr+1), &
207	qsws_1(nys-1:nyn+1,nxl-1:nxr+1), &
208	qswst_1(nys-1:nyn+1,nxl-1:nxr+1) )
209
210	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
211	ALLOCATE( qsws_2(nys-1:nyn+1,nxl-1:nxr+1), &
212	qswst_2(nys-1:nyn+1,nxl-1:nxr+1) )
213	ENDIF
214	!
215	!-- 3D-humidity/scalar arrays
216	ALLOCATE( q_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
217	q_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
218	q_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
219
220	!
221	!-- 3D-arrays needed for humidity only
222	IF ( humidity ) THEN
223	ALLOCATE( vpt_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
224
225	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
226	ALLOCATE( vpt_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
227	ENDIF
228
229	IF ( cloud_physics ) THEN
230	!
231	!-- Liquid water content
232	ALLOCATE ( ql_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
233	!
234	!-- Precipitation amount and rate (only needed if output is switched)
235	ALLOCATE( precipitation_amount(nys-1:nyn+1,nxl-1:nxr+1), &
236	precipitation_rate(nys-1:nyn+1,nxl-1:nxr+1) )
237	ENDIF
238
239	IF ( cloud_droplets ) THEN
240	!
241	!-- Liquid water content, change in liquid water content,
242	!-- real volume of particles (with weighting), volume of particles
243	ALLOCATE ( ql_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
244	ql_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
245	ql_v(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
246	ql_vp(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
247	ENDIF
248
249	ENDIF
250
251	ENDIF
252
253	IF ( ocean ) THEN
254	ALLOCATE( saswsb_1(nys-1:nyn+1,nxl-1:nxr+1), &
255	saswst_1(nys-1:nyn+1,nxl-1:nxr+1) )
256	ALLOCATE( prho_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
257	rho_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
258	sa_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
259	sa_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
260	sa_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
261	prho => prho_1
262	rho => rho_1 ! routines calc_mean_profile and diffusion_e require
263	! density to be apointer
264	IF ( humidity_remote ) THEN
265	ALLOCATE( qswst_remote(nys-1:nyn+1,nxl-1:nxr+1) )
266	qswst_remote = 0.0
267	ENDIF
268	ENDIF
269
270	!
271	!-- 3D-array for storing the dissipation, needed for calculating the sgs
272	!-- particle velocities
273	IF ( use_sgs_for_particles ) THEN
274	ALLOCATE ( diss(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
275	ELSE
276	ALLOCATE ( diss(2,2,2) ) ! required because diss is used as a
277	! formal parameter
278	ENDIF
279
280	IF ( dt_dosp /= 9999999.9 ) THEN
281	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
282	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
283	spectrum_x = 0.0
284	spectrum_y = 0.0
285	ENDIF
286
287	!
288	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
289	IF ( plant_canopy ) THEN
290	ALLOCATE ( lad_s(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
291	lad_u(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
292	lad_v(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
293	lad_w(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
294	cdc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
295
296	IF ( passive_scalar ) THEN
297	ALLOCATE ( sls(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
298	sec(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
299	ENDIF
300
301	IF ( cthf /= 0.0 ) THEN
302	ALLOCATE ( lai(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
303	canopy_heat_flux(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
304	ENDIF
305
306	ENDIF
307
308	!
309	!-- 4D-array for storing the Rif-values at vertical walls
310	IF ( topography /= 'flat' ) THEN
311	ALLOCATE( rif_wall(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1,1:4) )
312	rif_wall = 0.0
313	ENDIF
314
315	!
316	!-- Velocities at nzb+1 needed for volume flow control
317	IF ( conserve_volume_flow ) THEN
318	ALLOCATE( u_nzb_p1_for_vfc(nys:nyn), v_nzb_p1_for_vfc(nxl:nxr) )
319	u_nzb_p1_for_vfc = 0.0
320	v_nzb_p1_for_vfc = 0.0
321	ENDIF
322
323	!
324	!-- Arrays to store velocity data from t-dt and the phase speeds which
325	!-- are needed for radiation boundary conditions
326	IF ( outflow_l ) THEN
327	ALLOCATE( u_m_l(nzb:nzt+1,nys-1:nyn+1,1:2), &
328	v_m_l(nzb:nzt+1,nys-1:nyn+1,0:1), &
329	w_m_l(nzb:nzt+1,nys-1:nyn+1,0:1) )
330	ENDIF
331	IF ( outflow_r ) THEN
332	ALLOCATE( u_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx), &
333	v_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx), &
334	w_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx) )
335	ENDIF
336	IF ( outflow_l .OR. outflow_r ) THEN
337	ALLOCATE( c_u(nzb:nzt+1,nys-1:nyn+1), c_v(nzb:nzt+1,nys-1:nyn+1), &
338	c_w(nzb:nzt+1,nys-1:nyn+1) )
339	ENDIF
340	IF ( outflow_s ) THEN
341	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxl-1:nxr+1), &
342	v_m_s(nzb:nzt+1,1:2,nxl-1:nxr+1), &
343	w_m_s(nzb:nzt+1,0:1,nxl-1:nxr+1) )
344	ENDIF
345	IF ( outflow_n ) THEN
346	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxl-1:nxr+1), &
347	v_m_n(nzb:nzt+1,ny-1:ny,nxl-1:nxr+1), &
348	w_m_n(nzb:nzt+1,ny-1:ny,nxl-1:nxr+1) )
349	ENDIF
350	IF ( outflow_s .OR. outflow_n ) THEN
351	ALLOCATE( c_u(nzb:nzt+1,nxl-1:nxr+1), c_v(nzb:nzt+1,nxl-1:nxr+1), &
352	c_w(nzb:nzt+1,nxl-1:nxr+1) )
353	ENDIF
354
355	!
356	!-- Initial assignment of the pointers
357	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
358
359	rif_m => rif_1; rif => rif_2
360	shf_m => shf_1; shf => shf_2
361	tswst_m => tswst_1; tswst => tswst_2
362	usws_m => usws_1; usws => usws_2
363	uswst_m => uswst_1; uswst => uswst_2
364	vsws_m => vsws_1; vsws => vsws_2
365	vswst_m => vswst_1; vswst => vswst_2
366	e_m => e_1; e => e_2; e_p => e_3; te_m => e_3
367	kh_m => kh_1; kh => kh_2
368	km_m => km_1; km => km_2
369	pt_m => pt_1; pt => pt_2; pt_p => pt_3; tpt_m => pt_3
370	u_m => u_1; u => u_2; u_p => u_3; tu_m => u_3
371	v_m => v_1; v => v_2; v_p => v_3; tv_m => v_3
372	w_m => w_1; w => w_2; w_p => w_3; tw_m => w_3
373
374	IF ( humidity .OR. passive_scalar ) THEN
375	qsws_m => qsws_1; qsws => qsws_2
376	qswst_m => qswst_1; qswst => qswst_2
377	q_m => q_1; q => q_2; q_p => q_3; tq_m => q_3
378	IF ( humidity ) vpt_m => vpt_1; vpt => vpt_2
379	IF ( cloud_physics ) ql => ql_1
380	IF ( cloud_droplets ) THEN
381	ql => ql_1
382	ql_c => ql_2
383	ENDIF
384	ENDIF
385
386	ELSE
387
388	rif => rif_1
389	shf => shf_1
390	tswst => tswst_1
391	usws => usws_1
392	uswst => uswst_1
393	vsws => vsws_1
394	vswst => vswst_1
395	e => e_1; e_p => e_2; te_m => e_3; e_m => e_3
396	kh => kh_1
397	km => km_1
398	pt => pt_1; pt_p => pt_2; tpt_m => pt_3; pt_m => pt_3
399	u => u_1; u_p => u_2; tu_m => u_3; u_m => u_3
400	v => v_1; v_p => v_2; tv_m => v_3; v_m => v_3
401	w => w_1; w_p => w_2; tw_m => w_3; w_m => w_3
402
403	IF ( humidity .OR. passive_scalar ) THEN
404	qsws => qsws_1
405	qswst => qswst_1
406	q => q_1; q_p => q_2; tq_m => q_3; q_m => q_3
407	IF ( humidity ) vpt => vpt_1
408	IF ( cloud_physics ) ql => ql_1
409	IF ( cloud_droplets ) THEN
410	ql => ql_1
411	ql_c => ql_2
412	ENDIF
413	ENDIF
414
415	IF ( ocean ) THEN
416	saswsb => saswsb_1
417	saswst => saswst_1
418	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
419	ENDIF
420
421	ENDIF
422
423	!
424	!-- Initialize model variables
425	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
426	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
427	!
428	!-- First model run of a possible job queue.
429	!-- Initial profiles of the variables must be computes.
430	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
431	!
432	!-- Use solutions of the 1D model as initial profiles,
433	!-- start 1D model
434	CALL init_1d_model
435	!
436	!-- Transfer initial profiles to the arrays of the 3D model
437	DO i = nxl-1, nxr+1
438	DO j = nys-1, nyn+1
439	e(:,j,i) = e1d
440	kh(:,j,i) = kh1d
441	km(:,j,i) = km1d
442	pt(:,j,i) = pt_init
443	u(:,j,i) = u1d
444	v(:,j,i) = v1d
445	ENDDO
446	ENDDO
447
448	IF ( humidity .OR. passive_scalar ) THEN
449	DO i = nxl-1, nxr+1
450	DO j = nys-1, nyn+1
451	q(:,j,i) = q_init
452	ENDDO
453	ENDDO
454	ENDIF
455
456	IF ( .NOT. constant_diffusion ) THEN
457	DO i = nxl-1, nxr+1
458	DO j = nys-1, nyn+1
459	e(:,j,i) = e1d
460	ENDDO
461	ENDDO
462	!
463	!-- Store initial profiles for output purposes etc.
464	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
465
466	IF ( prandtl_layer ) THEN
467	rif = rif1d(nzb+1)
468	ts = 0.0 ! could actually be computed more accurately in the
469	! 1D model. Update when opportunity arises.
470	us = us1d
471	usws = usws1d
472	vsws = vsws1d
473	ELSE
474	ts = 0.0 ! must be set, because used in
475	rif = 0.0 ! flowste
476	us = 0.0
477	usws = 0.0
478	vsws = 0.0
479	ENDIF
480
481	ELSE
482	e = 0.0 ! must be set, because used in
483	rif = 0.0 ! flowste
484	ts = 0.0
485	us = 0.0
486	usws = 0.0
487	vsws = 0.0
488	ENDIF
489	uswst = top_momentumflux_u
490	vswst = top_momentumflux_v
491
492	!
493	!-- In every case qs = 0.0 (see also pt)
494	!-- This could actually be computed more accurately in the 1D model.
495	!-- Update when opportunity arises!
496	IF ( humidity .OR. passive_scalar ) qs = 0.0
497
498	!
499	!-- inside buildings set velocities back to zero
500	IF ( topography /= 'flat' ) THEN
501	DO i = nxl-1, nxr+1
502	DO j = nys-1, nyn+1
503	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
504	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
505	ENDDO
506	ENDDO
507	IF ( conserve_volume_flow ) THEN
508	IF ( nxr == nx ) THEN
509	DO j = nys, nyn
510	DO k = nzb + 1, nzb_u_inner(j,nx)
511	u_nzb_p1_for_vfc(j) = u_nzb_p1_for_vfc(j) + &
512	u1d(k) * dzu(k)
513	ENDDO
514	ENDDO
515	ENDIF
516	IF ( nyn == ny ) THEN
517	DO i = nxl, nxr
518	DO k = nzb + 1, nzb_v_inner(ny,i)
519	v_nzb_p1_for_vfc(i) = v_nzb_p1_for_vfc(i) + &
520	v1d(k) * dzu(k)
521	ENDDO
522	ENDDO
523	ENDIF
524	ENDIF
525	!
526	!-- WARNING: The extra boundary conditions set after running the
527	!-- ------- 1D model impose an error on the divergence one layer
528	!-- below the topography; need to correct later
529	!-- ATTENTION: Provisional correction for Piacsek & Williams
530	!-- --------- advection scheme: keep u and v zero one layer below
531	!-- the topography.
532	IF ( ibc_uv_b == 0 ) THEN
533	!
534	!-- Satisfying the Dirichlet condition with an extra layer below
535	!-- the surface where the u and v component change their sign.
536	DO i = nxl-1, nxr+1
537	DO j = nys-1, nyn+1
538	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = -u(1,j,i)
539	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = -v(1,j,i)
540	ENDDO
541	ENDDO
542
543	ELSE
544	!
545	!-- Neumann condition
546	DO i = nxl-1, nxr+1
547	DO j = nys-1, nyn+1
548	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
549	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
550	ENDDO
551	ENDDO
552
553	ENDIF
554
555	ENDIF
556
557	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
558	THEN
559	!
560	!-- Use constructed initial profiles (velocity constant with height,
561	!-- temperature profile with constant gradient)
562	DO i = nxl-1, nxr+1
563	DO j = nys-1, nyn+1
564	pt(:,j,i) = pt_init
565	u(:,j,i) = u_init
566	v(:,j,i) = v_init
567	ENDDO
568	ENDDO
569
570	!
571	!-- Set initial horizontal velocities at the lowest computational grid
572	!-- levels to zero in order to avoid too small time steps caused by the
573	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
574	!-- in the limiting formula!). The original values are stored to be later
575	!-- used for volume flow control.
576	DO i = nxl-1, nxr+1
577	DO j = nys-1, nyn+1
578	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
579	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
580	ENDDO
581	ENDDO
582	IF ( conserve_volume_flow ) THEN
583	IF ( nxr == nx ) THEN
584	DO j = nys, nyn
585	DO k = nzb + 1, nzb_u_inner(j,nx) + 1
586	u_nzb_p1_for_vfc(j) = u_nzb_p1_for_vfc(j) + &
587	u_init(k) * dzu(k)
588	ENDDO
589	ENDDO
590	ENDIF
591	IF ( nyn == ny ) THEN
592	DO i = nxl, nxr
593	DO k = nzb + 1, nzb_v_inner(ny,i) + 1
594	v_nzb_p1_for_vfc(i) = v_nzb_p1_for_vfc(i) + &
595	v_init(k) * dzu(k)
596	ENDDO
597	ENDDO
598	ENDIF
599	ENDIF
600
601	IF ( humidity .OR. passive_scalar ) THEN
602	DO i = nxl-1, nxr+1
603	DO j = nys-1, nyn+1
604	q(:,j,i) = q_init
605	ENDDO
606	ENDDO
607	ENDIF
608
609	IF ( ocean ) THEN
610	DO i = nxl-1, nxr+1
611	DO j = nys-1, nyn+1
612	sa(:,j,i) = sa_init
613	ENDDO
614	ENDDO
615	ENDIF
616
617	IF ( constant_diffusion ) THEN
618	km = km_constant
619	kh = km / prandtl_number
620	e = 0.0
621	ELSEIF ( e_init > 0.0 ) THEN
622	DO k = nzb+1, nzt
623	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
624	ENDDO
625	km(nzb,:,:) = km(nzb+1,:,:)
626	km(nzt+1,:,:) = km(nzt,:,:)
627	kh = km / prandtl_number
628	e = e_init
629	ELSE
630	IF ( .NOT. ocean ) THEN
631	kh = 0.01 ! there must exist an initial diffusion, because
632	km = 0.01 ! otherwise no TKE would be produced by the
633	! production terms, as long as not yet
634	! e = (u/cm)*2 at k=nzb+1
635	ELSE
636	kh = 0.00001
637	km = 0.00001
638	ENDIF
639	e = 0.0
640	ENDIF
641	rif = 0.0
642	ts = 0.0
643	us = 0.0
644	usws = 0.0
645	uswst = top_momentumflux_u
646	vsws = 0.0
647	vswst = top_momentumflux_v
648	IF ( humidity .OR. passive_scalar ) qs = 0.0
649
650	!
651	!-- Compute initial temperature field and other constants used in case
652	!-- of a sloping surface
653	IF ( sloping_surface ) CALL init_slope
654
655	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
656	THEN
657	!
658	!-- Initialization will completely be done by the user
659	CALL user_init_3d_model
660
661	ENDIF
662
663	!
664	!-- Apply channel flow boundary condition
665	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
666
667	u(nzt+1,:,:) = 0.0
668	v(nzt+1,:,:) = 0.0
669
670	!-- For the Dirichlet condition to be correctly applied at the top, set
671	!-- ug and vg to zero there
672	ug(nzt+1) = 0.0
673	vg(nzt+1) = 0.0
674
675	ENDIF
676
677	!
678	!-- Calculate virtual potential temperature
679	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
680
681	!
682	!-- Store initial profiles for output purposes etc.
683	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
684	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
685	IF ( ibc_uv_b == 0 ) THEN
686	hom(nzb,1,5,:) = -hom(nzb+1,1,5,:) ! due to satisfying the Dirichlet
687	hom(nzb,1,6,:) = -hom(nzb+1,1,6,:) ! condition with an extra layer
688	! below the surface where the u and v component change their sign
689	ENDIF
690	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
691	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
692	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
693
694	IF ( ocean ) THEN
695	!
696	!-- Store initial salinity profile
697	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
698	ENDIF
699
700	IF ( humidity ) THEN
701	!
702	!-- Store initial profile of total water content, virtual potential
703	!-- temperature
704	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
705	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
706	IF ( cloud_physics .OR. cloud_droplets ) THEN
707	!
708	!-- Store initial profile of specific humidity and potential
709	!-- temperature
710	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
711	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
712	ENDIF
713	ENDIF
714
715	IF ( passive_scalar ) THEN
716	!
717	!-- Store initial scalar profile
718	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
719	ENDIF
720
721	!
722	!-- Initialize fluxes at bottom surface
723	IF ( use_surface_fluxes ) THEN
724
725	IF ( constant_heatflux ) THEN
726	!
727	!-- Heat flux is prescribed
728	IF ( random_heatflux ) THEN
729	CALL disturb_heatflux
730	ELSE
731	shf = surface_heatflux
732	!
733	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
734	IF ( TRIM( topography ) /= 'flat' ) THEN
735	DO i = nxl-1, nxr+1
736	DO j = nys-1, nyn+1
737	IF ( nzb_s_inner(j,i) /= 0 ) THEN
738	shf(j,i) = wall_heatflux(0)
739	ENDIF
740	ENDDO
741	ENDDO
742	ENDIF
743	ENDIF
744	IF ( ASSOCIATED( shf_m ) ) shf_m = shf
745	ENDIF
746
747	!
748	!-- Determine the near-surface water flux
749	IF ( humidity .OR. passive_scalar ) THEN
750	IF ( constant_waterflux ) THEN
751	qsws = surface_waterflux
752	!
753	!-- Over topography surface_waterflux is replaced by
754	!-- wall_humidityflux(0)
755	IF ( TRIM( topography ) /= 'flat' ) THEN
756	wall_qflux = wall_humidityflux
757	DO i = nxl-1, nxr+1
758	DO j = nys-1, nyn+1
759	IF ( nzb_s_inner(j,i) /= 0 ) THEN
760	qsws(j,i) = wall_qflux(0)
761	ENDIF
762	ENDDO
763	ENDDO
764	ENDIF
765	IF ( ASSOCIATED( qsws_m ) ) qsws_m = qsws
766	ENDIF
767	ENDIF
768
769	ENDIF
770
771	!
772	!-- Initialize fluxes at top surface
773	!-- Currently, only the heatflux and salinity flux can be prescribed.
774	!-- The latent flux is zero in this case!
775	IF ( use_top_fluxes ) THEN
776
777	IF ( constant_top_heatflux ) THEN
778	!
779	!-- Heat flux is prescribed
780	tswst = top_heatflux
781	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
782
783	IF ( humidity .OR. passive_scalar ) THEN
784	qswst = 0.0
785	IF ( ASSOCIATED( qswst_m ) ) qswst_m = qswst
786	ENDIF
787
788	IF ( ocean ) THEN
789	saswsb = bottom_salinityflux
790	saswst = top_salinityflux
791	ENDIF
792	ENDIF
793
794	!
795	!-- Initialization in case of a coupled model run
796	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
797	tswst = 0.0
798	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
799	ENDIF
800
801	ENDIF
802
803	!
804	!-- Initialize Prandtl layer quantities
805	IF ( prandtl_layer ) THEN
806
807	z0 = roughness_length
808
809	IF ( .NOT. constant_heatflux ) THEN
810	!
811	!-- Surface temperature is prescribed. Here the heat flux cannot be
812	!-- simply estimated, because therefore rif, u* and theta* would have
813	!-- to be computed by iteration. This is why the heat flux is assumed
814	!-- to be zero before the first time step. It approaches its correct
815	!-- value in the course of the first few time steps.
816	shf = 0.0
817	IF ( ASSOCIATED( shf_m ) ) shf_m = 0.0
818	ENDIF
819
820	IF ( humidity .OR. passive_scalar ) THEN
821	IF ( .NOT. constant_waterflux ) THEN
822	qsws = 0.0
823	IF ( ASSOCIATED( qsws_m ) ) qsws_m = 0.0
824	ENDIF
825	ENDIF
826
827	ENDIF
828
829	!
830	!-- Calculate the initial volume flow at the right and north boundary
831	IF ( conserve_volume_flow ) THEN
832
833	volume_flow_initial_l = 0.0
834	volume_flow_area_l = 0.0
835
836	IF ( nxr == nx ) THEN
837	DO j = nys, nyn
838	DO k = nzb_2d(j,nx) + 1, nzt
839	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
840	u(k,j,nx) * dzu(k)
841	volume_flow_area_l(1) = volume_flow_area_l(1) + dzu(k)
842	ENDDO
843	!
844	!-- Correction if velocity at nzb+1 has been set zero further above
845	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
846	u_nzb_p1_for_vfc(j)
847	ENDDO
848	ENDIF
849
850	IF ( nyn == ny ) THEN
851	DO i = nxl, nxr
852	DO k = nzb_2d(ny,i) + 1, nzt
853	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
854	v(k,ny,i) * dzu(k)
855	volume_flow_area_l(2) = volume_flow_area_l(2) + dzu(k)
856	ENDDO
857	!
858	!-- Correction if velocity at nzb+1 has been set zero further above
859	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
860	v_nzb_p1_for_vfc(i)
861	ENDDO
862	ENDIF
863
864	#if defined( __parallel )
865	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
866	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
867	2, MPI_REAL, MPI_SUM, comm2d, ierr )
868	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
869	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
870	2, MPI_REAL, MPI_SUM, comm2d, ierr )
871	#else
872	volume_flow_initial = volume_flow_initial_l
873	volume_flow_area = volume_flow_area_l
874	#endif
875	!
876	!-- In case of 'bulk_velocity' mode, volume_flow_initial is overridden
877	!-- and calculated from u\|v_bulk instead.
878	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
879	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
880	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
881	ENDIF
882
883	ENDIF
884
885	!
886	!-- For the moment, perturbation pressure and vertical velocity are zero
887	p = 0.0; w = 0.0
888
889	!
890	!-- Initialize array sums (must be defined in first call of pres)
891	sums = 0.0
892
893	!
894	!-- Treating cloud physics, liquid water content and precipitation amount
895	!-- are zero at beginning of the simulation
896	IF ( cloud_physics ) THEN
897	ql = 0.0
898	IF ( precipitation ) precipitation_amount = 0.0
899	ENDIF
900
901	!
902	!-- Impose vortex with vertical axis on the initial velocity profile
903	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
904	CALL init_rankine
905	ENDIF
906
907	!
908	!-- Impose temperature anomaly (advection test only)
909	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
910	CALL init_pt_anomaly
911	ENDIF
912
913	!
914	!-- If required, change the surface temperature at the start of the 3D run
915	IF ( pt_surface_initial_change /= 0.0 ) THEN
916	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
917	ENDIF
918
919	!
920	!-- If required, change the surface humidity/scalar at the start of the 3D
921	!-- run
922	IF ( ( humidity .OR. passive_scalar ) .AND. &
923	q_surface_initial_change /= 0.0 ) THEN
924	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
925	ENDIF
926
927	!
928	!-- Initialize the random number generator (from numerical recipes)
929	CALL random_function_ini
930
931	!
932	!-- Impose random perturbation on the horizontal velocity field and then
933	!-- remove the divergences from the velocity field
934	IF ( create_disturbances ) THEN
935	CALL disturb_field( nzb_u_inner, tend, u )
936	CALL disturb_field( nzb_v_inner, tend, v )
937	n_sor = nsor_ini
938	CALL pres
939	n_sor = nsor
940	ENDIF
941
942	!
943	!-- Once again set the perturbation pressure explicitly to zero in order to
944	!-- assure that it does not generate any divergences in the first time step.
945	!-- At t=0 the velocity field is free of divergence (as constructed above).
946	!-- Divergences being created during a time step are not yet known and thus
947	!-- cannot be corrected during the time step yet.
948	p = 0.0
949
950	!
951	!-- Initialize old and new time levels.
952	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
953	e_m = e; pt_m = pt; u_m = u; v_m = v; w_m = w; kh_m = kh; km_m = km
954	ELSE
955	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
956	ENDIF
957	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
958
959	IF ( humidity .OR. passive_scalar ) THEN
960	IF ( ASSOCIATED( q_m ) ) q_m = q
961	IF ( timestep_scheme(1:5) == 'runge' ) tq_m = 0.0
962	q_p = q
963	IF ( humidity .AND. ASSOCIATED( vpt_m ) ) vpt_m = vpt
964	ENDIF
965
966	IF ( ocean ) THEN
967	tsa_m = 0.0
968	sa_p = sa
969	ENDIF
970
971
972	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
973	TRIM( initializing_actions ) == 'cyclic_fill' ) &
974	THEN
975	!
976	!-- When reading data for cyclic fill of 3D prerun data, first read
977	!-- some of the global variables from restart file
978	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
979
980	WRITE (9,*) 'before read_parts_of_var_list'
981	CALL local_flush( 9 )
982	CALL read_parts_of_var_list
983	WRITE (9,*) 'after read_parts_of_var_list'
984	CALL local_flush( 9 )
985	CALL close_file( 13 )
986
987	!
988	!-- Initialization of the turbulence recycling method
989	IF ( turbulent_inflow ) THEN
990	!
991	!-- Store temporally and horizontally averaged vertical profiles to be
992	!-- used as mean inflow profiles
993	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
994
995	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
996	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
997	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
998	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
999
1000	!
1001	!-- Use these mean profiles for the inflow (provided that Dirichlet
1002	!-- conditions are used)
1003	IF ( inflow_l ) THEN
1004	DO j = nys-1, nyn+1
1005	DO k = nzb, nzt+1
1006	u(k,j,-1) = mean_inflow_profiles(k,1)
1007	v(k,j,-1) = mean_inflow_profiles(k,2)
1008	w(k,j,-1) = 0.0
1009	pt(k,j,-1) = mean_inflow_profiles(k,4)
1010	e(k,j,-1) = mean_inflow_profiles(k,5)
1011	ENDDO
1012	ENDDO
1013	ENDIF
1014
1015	!
1016	!-- Calculate the damping factors to be used at the inflow. For a
1017	!-- turbulent inflow the turbulent fluctuations have to be limited
1018	!-- vertically because otherwise the turbulent inflow layer will grow
1019	!-- in time.
1020	IF ( inflow_damping_height == 9999999.9 ) THEN
1021	!
1022	!-- Default: use the inversion height calculated by the prerun; if
1023	!-- this is zero, inflow_damping_height must be explicitly
1024	!-- specified.
1025	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0 ) THEN
1026	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
1027	ELSE
1028	WRITE( message_string, * ) 'inflow_damping_height must be ',&
1029	'explicitly specified because&the inversion height ', &
1030	'calculated by the prerun is zero.'
1031	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
1032	ENDIF
1033
1034	ENDIF
1035
1036	IF ( inflow_damping_width == 9999999.9 ) THEN
1037	!
1038	!-- Default for the transition range: one tenth of the undamped
1039	!-- layer
1040	inflow_damping_width = 0.1 * inflow_damping_height
1041
1042	ENDIF
1043
1044	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
1045
1046	DO k = nzb, nzt+1
1047
1048	IF ( zu(k) <= inflow_damping_height ) THEN
1049	inflow_damping_factor(k) = 1.0
1050	ELSEIF ( zu(k) <= inflow_damping_height + &
1051	inflow_damping_width ) THEN
1052	inflow_damping_factor(k) = 1.0 - &
1053	( zu(k) - inflow_damping_height ) / &
1054	inflow_damping_width
1055	ELSE
1056	inflow_damping_factor(k) = 0.0
1057	ENDIF
1058
1059	ENDDO
1060	ENDIF
1061
1062	ENDIF
1063
1064	!
1065	!-- Read binary data from restart file
1066	WRITE (9,*) 'before read_3d_binary'
1067	CALL local_flush( 9 )
1068	CALL read_3d_binary
1069	WRITE (9,*) 'after read_3d_binary'
1070	CALL local_flush( 9 )
1071
1072	!
1073	!-- Inside buildings set velocities and TKE back to zero
1074	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
1075	topography /= 'flat' ) THEN
1076	!
1077	!-- Correction of initial volume flow
1078	IF ( conserve_volume_flow ) THEN
1079	IF ( nxr == nx ) THEN
1080	DO j = nys, nyn
1081	DO k = nzb + 1, nzb_u_inner(j,nx)
1082	u_nzb_p1_for_vfc(j) = u_nzb_p1_for_vfc(j) + &
1083	u(k,j,nx) * dzu(k)
1084	ENDDO
1085	ENDDO
1086	ENDIF
1087	IF ( nyn == ny ) THEN
1088	DO i = nxl, nxr
1089	DO k = nzb + 1, nzb_v_inner(ny,i)
1090	v_nzb_p1_for_vfc(i) = v_nzb_p1_for_vfc(i) + &
1091	v(k,ny,i) * dzu(k)
1092	ENDDO
1093	ENDDO
1094	ENDIF
1095	ENDIF
1096
1097	!
1098	!-- Inside buildings set velocities and TKE back to zero.
1099	!-- Other scalars (pt, q, s, km, kh, p, sa, ...) are ignored at present,
1100	!-- maybe revise later.
1101	IF ( timestep_scheme(1:5) == 'runge' ) THEN
1102	DO i = nxl-1, nxr+1
1103	DO j = nys-1, nyn+1
1104	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1105	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1106	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1107	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1108	u_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1109	v_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1110	w_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1111	e_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1112	tu_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1113	tv_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1114	tw_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1115	te_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1116	tpt_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1117	ENDDO
1118	ENDDO
1119	ELSE
1120	DO i = nxl-1, nxr+1
1121	DO j = nys-1, nyn+1
1122	u (nzb:nzb_u_inner(j,i),j,i) = 0.0
1123	v (nzb:nzb_v_inner(j,i),j,i) = 0.0
1124	w (nzb:nzb_w_inner(j,i),j,i) = 0.0
1125	e (nzb:nzb_w_inner(j,i),j,i) = 0.0
1126	u_m(nzb:nzb_u_inner(j,i),j,i) = 0.0
1127	v_m(nzb:nzb_v_inner(j,i),j,i) = 0.0
1128	w_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1129	e_m(nzb:nzb_w_inner(j,i),j,i) = 0.0
1130	u_p(nzb:nzb_u_inner(j,i),j,i) = 0.0
1131	v_p(nzb:nzb_v_inner(j,i),j,i) = 0.0
1132	w_p(nzb:nzb_w_inner(j,i),j,i) = 0.0
1133	e_p(nzb:nzb_w_inner(j,i),j,i) = 0.0
1134	ENDDO
1135	ENDDO
1136	ENDIF
1137
1138	ENDIF
1139
1140	!
1141	!-- Calculate the initial volume flow at the right and north boundary
1142	IF ( conserve_volume_flow .AND. &
1143	TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
1144
1145	volume_flow_initial_l = 0.0
1146	volume_flow_area_l = 0.0
1147
1148	IF ( nxr == nx ) THEN
1149	DO j = nys, nyn
1150	DO k = nzb_2d(j,nx) + 1, nzt
1151	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1152	u(k,j,nx) * dzu(k)
1153	volume_flow_area_l(1) = volume_flow_area_l(1) + dzu(k)
1154	ENDDO
1155	!
1156	!-- Correction if velocity inside buildings has been set to zero
1157	!-- further above
1158	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
1159	u_nzb_p1_for_vfc(j)
1160	ENDDO
1161	ENDIF
1162
1163	IF ( nyn == ny ) THEN
1164	DO i = nxl, nxr
1165	DO k = nzb_2d(ny,i) + 1, nzt
1166	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1167	v(k,ny,i) * dzu(k)
1168	volume_flow_area_l(2) = volume_flow_area_l(2) + dzu(k)
1169	ENDDO
1170	!
1171	!-- Correction if velocity inside buildings has been set to zero
1172	!-- further above
1173	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
1174	v_nzb_p1_for_vfc(i)
1175	ENDDO
1176	ENDIF
1177
1178	#if defined( __parallel )
1179	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1180	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
1181	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1182	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1183	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
1184	2, MPI_REAL, MPI_SUM, comm2d, ierr )
1185	#else
1186	volume_flow_initial = volume_flow_initial_l
1187	volume_flow_area = volume_flow_area_l
1188	#endif
1189	ENDIF
1190
1191
1192	!
1193	!-- Calculate initial temperature field and other constants used in case
1194	!-- of a sloping surface
1195	IF ( sloping_surface ) CALL init_slope
1196
1197	!
1198	!-- Initialize new time levels (only done in order to set boundary values
1199	!-- including ghost points)
1200	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
1201	IF ( humidity .OR. passive_scalar ) q_p = q
1202	IF ( ocean ) sa_p = sa
1203
1204	!
1205	!-- Allthough tendency arrays are set in prognostic_equations, they have
1206	!-- have to be predefined here because they are used (but multiplied with 0)
1207	!-- there before they are set.
1208	IF ( timestep_scheme(1:5) == 'runge' ) THEN
1209	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
1210	IF ( humidity .OR. passive_scalar ) tq_m = 0.0
1211	IF ( ocean ) tsa_m = 0.0
1212	ENDIF
1213
1214	ELSE
1215	!
1216	!-- Actually this part of the programm should not be reached
1217	message_string = 'unknown initializing problem'
1218	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
1219	ENDIF
1220
1221
1222	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
1223	!
1224	!-- Initialize old timelevels needed for radiation boundary conditions
1225	IF ( outflow_l ) THEN
1226	u_m_l(:,:,:) = u(:,:,1:2)
1227	v_m_l(:,:,:) = v(:,:,0:1)
1228	w_m_l(:,:,:) = w(:,:,0:1)
1229	ENDIF
1230	IF ( outflow_r ) THEN
1231	u_m_r(:,:,:) = u(:,:,nx-1:nx)
1232	v_m_r(:,:,:) = v(:,:,nx-1:nx)
1233	w_m_r(:,:,:) = w(:,:,nx-1:nx)
1234	ENDIF
1235	IF ( outflow_s ) THEN
1236	u_m_s(:,:,:) = u(:,0:1,:)
1237	v_m_s(:,:,:) = v(:,1:2,:)
1238	w_m_s(:,:,:) = w(:,0:1,:)
1239	ENDIF
1240	IF ( outflow_n ) THEN
1241	u_m_n(:,:,:) = u(:,ny-1:ny,:)
1242	v_m_n(:,:,:) = v(:,ny-1:ny,:)
1243	w_m_n(:,:,:) = w(:,ny-1:ny,:)
1244	ENDIF
1245
1246	ENDIF
1247
1248	!
1249	!-- Initialization of the leaf area density
1250	IF ( plant_canopy ) THEN
1251
1252	SELECT CASE ( TRIM( canopy_mode ) )
1253
1254	CASE( 'block' )
1255
1256	DO i = nxl-1, nxr+1
1257	DO j = nys-1, nyn+1
1258	lad_s(:,j,i) = lad(:)
1259	cdc(:,j,i) = drag_coefficient
1260	IF ( passive_scalar ) THEN
1261	sls(:,j,i) = leaf_surface_concentration
1262	sec(:,j,i) = scalar_exchange_coefficient
1263	ENDIF
1264	ENDDO
1265	ENDDO
1266
1267	CASE DEFAULT
1268
1269	!
1270	!-- The DEFAULT case is reached either if the parameter
1271	!-- canopy mode contains a wrong character string or if the
1272	!-- user has coded a special case in the user interface.
1273	!-- There, the subroutine user_init_plant_canopy checks
1274	!-- which of these two conditions applies.
1275	CALL user_init_plant_canopy
1276
1277	END SELECT
1278
1279	CALL exchange_horiz( lad_s )
1280	CALL exchange_horiz( cdc )
1281
1282	IF ( passive_scalar ) THEN
1283	CALL exchange_horiz( sls )
1284	CALL exchange_horiz( sec )
1285	ENDIF
1286
1287	!
1288	!-- Sharp boundaries of the plant canopy in horizontal directions
1289	!-- In vertical direction the interpolation is retained, as the leaf
1290	!-- area density is initialised by prescribing a vertical profile
1291	!-- consisting of piecewise linear segments. The upper boundary
1292	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
1293
1294	DO i = nxl, nxr
1295	DO j = nys, nyn
1296	DO k = nzb, nzt+1
1297	IF ( lad_s(k,j,i) > 0.0 ) THEN
1298	lad_u(k,j,i) = lad_s(k,j,i)
1299	lad_u(k,j,i+1) = lad_s(k,j,i)
1300	lad_v(k,j,i) = lad_s(k,j,i)
1301	lad_v(k,j+1,i) = lad_s(k,j,i)
1302	ENDIF
1303	ENDDO
1304	DO k = nzb, nzt
1305	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
1306	ENDDO
1307	ENDDO
1308	ENDDO
1309
1310	lad_w(pch_index,:,:) = 0.0
1311	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
1312
1313	CALL exchange_horiz( lad_u )
1314	CALL exchange_horiz( lad_v )
1315	CALL exchange_horiz( lad_w )
1316
1317	!
1318	!-- Initialisation of the canopy heat source distribution
1319	IF ( cthf /= 0.0 ) THEN
1320	!
1321	!-- Piecewise evaluation of the leaf area index by
1322	!-- integration of the leaf area density
1323	lai(:,:,:) = 0.0
1324	DO i = nxl-1, nxr+1
1325	DO j = nys-1, nyn+1
1326	DO k = pch_index-1, 0, -1
1327	lai(k,j,i) = lai(k+1,j,i) + &
1328	( 0.5 * ( lad_w(k+1,j,i) + &
1329	lad_s(k+1,j,i) ) * &
1330	( zw(k+1) - zu(k+1) ) ) + &
1331	( 0.5 * ( lad_w(k,j,i) + &
1332	lad_s(k+1,j,i) ) * &
1333	( zu(k+1) - zw(k) ) )
1334	ENDDO
1335	ENDDO
1336	ENDDO
1337
1338	!
1339	!-- Evaluation of the upward kinematic vertical heat flux within the
1340	!-- canopy
1341	DO i = nxl-1, nxr+1
1342	DO j = nys-1, nyn+1
1343	DO k = 0, pch_index
1344	canopy_heat_flux(k,j,i) = cthf * &
1345	exp( -0.6 * lai(k,j,i) )
1346	ENDDO
1347	ENDDO
1348	ENDDO
1349
1350	!
1351	!-- The near surface heat flux is derived from the heat flux
1352	!-- distribution within the canopy
1353	shf(:,:) = canopy_heat_flux(0,:,:)
1354
1355	IF ( ASSOCIATED( shf_m ) ) shf_m = shf
1356
1357	ENDIF
1358
1359	ENDIF
1360
1361	!
1362	!-- If required, initialize dvrp-software
1363	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
1364
1365	IF ( ocean ) THEN
1366	!
1367	!-- Initialize quantities needed for the ocean model
1368	CALL init_ocean
1369
1370	ELSE
1371	!
1372	!-- Initialize quantities for handling cloud physics
1373	!-- This routine must be called before init_particles, because
1374	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
1375	!-- init_particles) is not defined.
1376	CALL init_cloud_physics
1377	ENDIF
1378
1379	!
1380	!-- If required, initialize particles
1381	IF ( particle_advection ) CALL init_particles
1382
1383	!
1384	!-- Initialize quantities for special advections schemes
1385	CALL init_advec
1386
1387	!
1388	!-- Initialize Rayleigh damping factors
1389	rdf = 0.0
1390	IF ( rayleigh_damping_factor /= 0.0 ) THEN
1391	IF ( .NOT. ocean ) THEN
1392	DO k = nzb+1, nzt
1393	IF ( zu(k) >= rayleigh_damping_height ) THEN
1394	rdf(k) = rayleigh_damping_factor * &
1395	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
1396	/ ( zu(nzt) - rayleigh_damping_height ) )&
1397	)**2
1398	ENDIF
1399	ENDDO
1400	ELSE
1401	DO k = nzt, nzb+1, -1
1402	IF ( zu(k) <= rayleigh_damping_height ) THEN
1403	rdf(k) = rayleigh_damping_factor * &
1404	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
1405	/ ( rayleigh_damping_height - zu(nzb+1)))&
1406	)**2
1407	ENDIF
1408	ENDDO
1409	ENDIF
1410	ENDIF
1411
1412	!
1413	!-- Initialize the starting level and the vertical smoothing factor used for
1414	!-- the external pressure gradient
1415	dp_smooth_factor = 1.0
1416	IF ( dp_external ) THEN
1417	!
1418	!-- Set the starting level dp_level_ind_b only if it has not been set before
1419	!-- (e.g. in init_grid).
1420	IF ( dp_level_ind_b == 0 ) THEN
1421	ind_array = MINLOC( ABS( dp_level_b - zu ) )
1422	dp_level_ind_b = ind_array(1) - 1 + nzb
1423	! MINLOC uses lower array bound 1
1424	ENDIF
1425	IF ( dp_smooth ) THEN
1426	dp_smooth_factor(:dp_level_ind_b) = 0.0
1427	DO k = dp_level_ind_b+1, nzt
1428	dp_smooth_factor(k) = 0.5 * ( 1.0 + SIN( pi * &
1429	( REAL( k - dp_level_ind_b ) / &
1430	REAL( nzt - dp_level_ind_b ) - 0.5 ) ) )
1431	ENDDO
1432	ENDIF
1433	ENDIF
1434
1435	!
1436	!-- Initialize diffusivities used within the outflow damping layer in case of
1437	!-- non-cyclic lateral boundaries. A linear increase is assumed over the first
1438	!-- half of the width of the damping layer
1439	IF ( bc_lr == 'dirichlet/radiation' ) THEN
1440
1441	DO i = nxl-1, nxr+1
1442	IF ( i >= nx - outflow_damping_width ) THEN
1443	km_damp_x(i) = km_damp_max * MIN( 1.0, &
1444	( i - ( nx - outflow_damping_width ) ) / &
1445	REAL( outflow_damping_width/2 ) &
1446	)
1447	ELSE
1448	km_damp_x(i) = 0.0
1449	ENDIF
1450	ENDDO
1451
1452	ELSEIF ( bc_lr == 'radiation/dirichlet' ) THEN
1453
1454	DO i = nxl-1, nxr+1
1455	IF ( i <= outflow_damping_width ) THEN
1456	km_damp_x(i) = km_damp_max * MIN( 1.0, &
1457	( outflow_damping_width - i ) / &
1458	REAL( outflow_damping_width/2 ) &
1459	)
1460	ELSE
1461	km_damp_x(i) = 0.0
1462	ENDIF
1463	ENDDO
1464
1465	ENDIF
1466
1467	IF ( bc_ns == 'dirichlet/radiation' ) THEN
1468
1469	DO j = nys-1, nyn+1
1470	IF ( j >= ny - outflow_damping_width ) THEN
1471	km_damp_y(j) = km_damp_max * MIN( 1.0, &
1472	( j - ( ny - outflow_damping_width ) ) / &
1473	REAL( outflow_damping_width/2 ) &
1474	)
1475	ELSE
1476	km_damp_y(j) = 0.0
1477	ENDIF
1478	ENDDO
1479
1480	ELSEIF ( bc_ns == 'radiation/dirichlet' ) THEN
1481
1482	DO j = nys-1, nyn+1
1483	IF ( j <= outflow_damping_width ) THEN
1484	km_damp_y(j) = km_damp_max * MIN( 1.0, &
1485	( outflow_damping_width - j ) / &
1486	REAL( outflow_damping_width/2 ) &
1487	)
1488	ELSE
1489	km_damp_y(j) = 0.0
1490	ENDIF
1491	ENDDO
1492
1493	ENDIF
1494
1495	!
1496	!-- Initialize local summation arrays for UP flow_statistics. This is necessary
1497	!-- because they may not yet have been initialized when they are called from
1498	!-- flow_statistics (or - depending on the chosen model run - are never
1499	!-- initialized)
1500	sums_divnew_l = 0.0
1501	sums_divold_l = 0.0
1502	sums_l_l = 0.0
1503	sums_up_fraction_l = 0.0
1504	sums_wsts_bc_l = 0.0
1505
1506	!
1507	!-- Pre-set masks for regional statistics. Default is the total model domain.
1508	rmask = 1.0
1509
1510	!
1511	!-- User-defined initializing actions. Check afterwards, if maximum number
1512	!-- of allowed timeseries is not exceeded
1513	CALL user_init
1514
1515	IF ( dots_num > dots_max ) THEN
1516	WRITE( message_string, * ) 'number of time series quantities exceeds', &
1517	' its maximum of dots_max = ', dots_max, &
1518	' &Please increase dots_max in modules.f90.'
1519	CALL message( 'init_3d_model', 'PA0194', 1, 2, 0, 6, 0 )
1520	ENDIF
1521
1522	!
1523	!-- Input binary data file is not needed anymore. This line must be placed
1524	!-- after call of user_init!
1525	CALL close_file( 13 )
1526
1527	!
1528	!-- Compute total sum of active mask grid points
1529	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1530	!-- total domain
1531	!-- ngp_3d: number of grid points of the total domain
1532	ngp_2dh_outer_l = 0
1533	ngp_2dh_outer = 0
1534	ngp_2dh_s_inner_l = 0
1535	ngp_2dh_s_inner = 0
1536	ngp_2dh_l = 0
1537	ngp_2dh = 0
1538	ngp_3d_inner_l = 0.0
1539	ngp_3d_inner = 0
1540	ngp_3d = 0
1541	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1542
1543	DO sr = 0, statistic_regions
1544	DO i = nxl, nxr
1545	DO j = nys, nyn
1546	IF ( rmask(j,i,sr) == 1.0 ) THEN
1547	!
1548	!-- All xy-grid points
1549	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1550	!
1551	!-- xy-grid points above topography
1552	DO k = nzb_s_outer(j,i), nz + 1
1553	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1554	ENDDO
1555	DO k = nzb_s_inner(j,i), nz + 1
1556	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
1557	ENDDO
1558	!
1559	!-- All grid points of the total domain above topography
1560	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1561	( nz - nzb_s_inner(j,i) + 2 )
1562	ENDIF
1563	ENDDO
1564	ENDDO
1565	ENDDO
1566
1567	sr = statistic_regions + 1
1568	#if defined( __parallel )
1569	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1570	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1571	comm2d, ierr )
1572	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1573	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1574	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1575	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1576	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
1577	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
1578	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
1579	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
1580	MPI_SUM, comm2d, ierr )
1581	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
1582	#else
1583	ngp_2dh = ngp_2dh_l
1584	ngp_2dh_outer = ngp_2dh_outer_l
1585	ngp_2dh_s_inner = ngp_2dh_s_inner_l
1586	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
1587	#endif
1588
1589	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
1590	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
1591
1592	!
1593	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1594	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1595	!-- the respective subdomain lie below the surface topography
1596	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1597	ngp_3d_inner = MAX( 1, ngp_3d_inner(:) )
1598	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
1599
1600	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, ngp_3d_inner_tmp )
1601
1602
1603	END SUBROUTINE init_3d_model

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