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source: palm/trunk/SOURCE/init_3d_model.f90 @ 94

Last change on this file since 94 was 94, checked in by raasch, 17 years ago
preliminary uncomplete changes for ocean version
Property svn:keywords set to `Id`
File size: 34.4 KB

Line
1	#if defined( __ibmy_special )
2	@PROCESS NOOPTimize
3	#endif
4	SUBROUTINE init_3d_model
5
6	!------------------------------------------------------------------------------!
7	! Actual revisions:
8	! -----------------
9	! Initialization of salinity
10	!
11	! Former revisions:
12	! -----------------
13	! $Id: init_3d_model.f90 94 2007-06-01 15:25:22Z raasch $
14	!
15	! 87 2007-05-22 15:46:47Z raasch
16	! var_hom and var_sum renamed pr_palm
17	!
18	! 75 2007-03-22 09:54:05Z raasch
19	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
20	! bugfix for cases with the outflow damping layer extending over more than one
21	! subdomain, moisture renamed humidity,
22	! new initializing action "by_user" calls user_init_3d_model,
23	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
24	! initial velocities at nzb+1 are regarded for volume
25	! flow control in case they have been set zero before (to avoid small timesteps)
26	! -uvmean_outflow, uxrp, vynp eliminated
27	!
28	! 19 2007-02-23 04:53:48Z raasch
29	! +handling of top fluxes
30	!
31	! RCS Log replace by Id keyword, revision history cleaned up
32	!
33	! Revision 1.49 2006/08/22 15:59:07 raasch
34	! No optimization of this file on the ibmy (Yonsei Univ.)
35	!
36	! Revision 1.1 1998/03/09 16:22:22 raasch
37	! Initial revision
38	!
39	!
40	! Description:
41	! ------------
42	! Allocation of arrays and initialization of the 3D model via
43	! a) pre-run the 1D model
44	! or
45	! b) pre-set constant linear profiles
46	! or
47	! c) read values of a previous run
48	!------------------------------------------------------------------------------!
49
50	USE arrays_3d
51	USE averaging
52	USE cloud_parameters
53	USE constants
54	USE control_parameters
55	USE cpulog
56	USE indices
57	USE interfaces
58	USE model_1d
59	USE netcdf_control
60	USE particle_attributes
61	USE pegrid
62	USE profil_parameter
63	USE random_function_mod
64	USE statistics
65
66	IMPLICIT NONE
67
68	INTEGER :: i, j, k, sr
69
70	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l, ngp_3d_inner_l
71
72	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l
73
74	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
75
76
77	!
78	!-- Allocate arrays
79	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
80	ngp_3d(0:statistic_regions), &
81	ngp_3d_inner(0:statistic_regions), &
82	ngp_3d_inner_l(0:statistic_regions), &
83	sums_divnew_l(0:statistic_regions), &
84	sums_divold_l(0:statistic_regions) )
85	ALLOCATE( rdf(nzb+1:nzt) )
86	ALLOCATE( hom_sum(nzb:nzt+1,pr_palm+max_pr_user,0:statistic_regions), &
87	ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
88	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
89	rmask(nys-1:nyn+1,nxl-1:nxr+1,0:statistic_regions), &
90	sums(nzb:nzt+1,pr_palm+max_pr_user), &
91	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
92	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
93	sums_up_fraction_l(10,3,0:statistic_regions), &
94	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
95	ts_value(var_ts,0:statistic_regions) )
96	ALLOCATE( km_damp_x(nxl-1:nxr+1), km_damp_y(nys-1:nyn+1) )
97
98	ALLOCATE( rif_1(nys-1:nyn+1,nxl-1:nxr+1), shf_1(nys-1:nyn+1,nxl-1:nxr+1), &
99	ts(nys-1:nyn+1,nxl-1:nxr+1), tswst_1(nys-1:nyn+1,nxl-1:nxr+1), &
100	us(nys-1:nyn+1,nxl-1:nxr+1), usws_1(nys-1:nyn+1,nxl-1:nxr+1), &
101	vsws_1(nys-1:nyn+1,nxl-1:nxr+1), z0(nys-1:nyn+1,nxl-1:nxr+1) )
102
103	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
104	!
105	!-- Leapfrog scheme needs two timelevels of diffusion quantities
106	ALLOCATE( rif_2(nys-1:nyn+1,nxl-1:nxr+1), &
107	shf_2(nys-1:nyn+1,nxl-1:nxr+1), &
108	tswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
109	usws_2(nys-1:nyn+1,nxl-1:nxr+1), &
110	vsws_2(nys-1:nyn+1,nxl-1:nxr+1) )
111	ENDIF
112
113	ALLOCATE( d(nzb+1:nzta,nys:nyna,nxl:nxra), &
114	e_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
115	e_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
116	e_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
117	kh_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
118	km_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
119	p(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
120	pt_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
121	pt_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
122	pt_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
123	tend(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
124	u_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
125	u_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
126	u_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
127	v_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
128	v_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
129	v_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
130	w_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
131	w_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
132	w_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
133
134	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
135	ALLOCATE( kh_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
136	km_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
137	ENDIF
138
139	IF ( humidity .OR. passive_scalar ) THEN
140	!
141	!-- 2D-humidity/scalar arrays
142	ALLOCATE ( qs(nys-1:nyn+1,nxl-1:nxr+1), &
143	qsws_1(nys-1:nyn+1,nxl-1:nxr+1), &
144	qswst_1(nys-1:nyn+1,nxl-1:nxr+1) )
145
146	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
147	ALLOCATE( qsws_2(nys-1:nyn+1,nxl-1:nxr+1), &
148	qswst_2(nys-1:nyn+1,nxl-1:nxr+1) )
149	ENDIF
150	!
151	!-- 3D-humidity/scalar arrays
152	ALLOCATE( q_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
153	q_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
154	q_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
155
156	!
157	!-- 3D-arrays needed for humidity only
158	IF ( humidity ) THEN
159	ALLOCATE( vpt_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
160
161	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
162	ALLOCATE( vpt_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
163	ENDIF
164
165	IF ( cloud_physics ) THEN
166	!
167	!-- Liquid water content
168	ALLOCATE ( ql_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
169	!
170	!-- Precipitation amount and rate (only needed if output is switched)
171	ALLOCATE( precipitation_amount(nys-1:nyn+1,nxl-1:nxr+1), &
172	precipitation_rate(nys-1:nyn+1,nxl-1:nxr+1) )
173	ENDIF
174
175	IF ( cloud_droplets ) THEN
176	!
177	!-- Liquid water content, change in liquid water content,
178	!-- real volume of particles (with weighting), volume of particles
179	ALLOCATE ( ql_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
180	ql_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
181	ql_v(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
182	ql_vp(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
183	ENDIF
184
185	ENDIF
186
187	ENDIF
188
189	IF ( ocean ) THEN
190	ALLOCATE( saswst_1(nys-1:nyn+1,nxl-1:nxr+1) )
191	ALLOCATE( r(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
192	sa_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
193	sa_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
194	sa_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
195	ENDIF
196
197	!
198	!-- 3D-array for storing the dissipation, needed for calculating the sgs
199	!-- particle velocities
200	IF ( use_sgs_for_particles ) THEN
201	ALLOCATE ( diss(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
202	ENDIF
203
204	IF ( dt_dosp /= 9999999.9 ) THEN
205	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
206	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
207	ENDIF
208
209	!
210	!-- 4D-array for storing the Rif-values at vertical walls
211	IF ( topography /= 'flat' ) THEN
212	ALLOCATE( rif_wall(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1,1:4) )
213	rif_wall = 0.0
214	ENDIF
215
216	!
217	!-- Velocities at nzb+1 needed for volume flow control
218	IF ( conserve_volume_flow ) THEN
219	ALLOCATE( u_nzb_p1_for_vfc(nys:nyn), v_nzb_p1_for_vfc(nxl:nxr) )
220	u_nzb_p1_for_vfc = 0.0
221	v_nzb_p1_for_vfc = 0.0
222	ENDIF
223
224	!
225	!-- Arrays to store velocity data from t-dt needed for radiation boundary
226	!-- conditions
227	IF ( outflow_l ) THEN
228	ALLOCATE( u_m_l(nzb:nzt+1,nys-1:nyn+1,-1:1), &
229	v_m_l(nzb:nzt+1,nys-1:nyn+1,-1:1), &
230	w_m_l(nzb:nzt+1,nys-1:nyn+1,-1:1) )
231	ENDIF
232	IF ( outflow_r ) THEN
233	ALLOCATE( u_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx+1), &
234	v_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx+1), &
235	w_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx+1) )
236	ENDIF
237	IF ( outflow_s ) THEN
238	ALLOCATE( u_m_s(nzb:nzt+1,-1:1,nxl-1:nxr+1), &
239	v_m_s(nzb:nzt+1,-1:1,nxl-1:nxr+1), &
240	w_m_s(nzb:nzt+1,-1:1,nxl-1:nxr+1) )
241	ENDIF
242	IF ( outflow_n ) THEN
243	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny+1,nxl-1:nxr+1), &
244	v_m_n(nzb:nzt+1,ny-1:ny+1,nxl-1:nxr+1), &
245	w_m_n(nzb:nzt+1,ny-1:ny+1,nxl-1:nxr+1) )
246	ENDIF
247
248	!
249	!-- Initial assignment of the pointers
250	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
251
252	rif_m => rif_1; rif => rif_2
253	shf_m => shf_1; shf => shf_2
254	tswst_m => tswst_1; tswst => tswst_2
255	usws_m => usws_1; usws => usws_2
256	vsws_m => vsws_1; vsws => vsws_2
257	e_m => e_1; e => e_2; e_p => e_3; te_m => e_3
258	kh_m => kh_1; kh => kh_2
259	km_m => km_1; km => km_2
260	pt_m => pt_1; pt => pt_2; pt_p => pt_3; tpt_m => pt_3
261	u_m => u_1; u => u_2; u_p => u_3; tu_m => u_3
262	v_m => v_1; v => v_2; v_p => v_3; tv_m => v_3
263	w_m => w_1; w => w_2; w_p => w_3; tw_m => w_3
264
265	IF ( humidity .OR. passive_scalar ) THEN
266	qsws_m => qsws_1; qsws => qsws_2
267	qswst_m => qswst_1; qswst => qswst_2
268	q_m => q_1; q => q_2; q_p => q_3; tq_m => q_3
269	IF ( humidity ) vpt_m => vpt_1; vpt => vpt_2
270	IF ( cloud_physics ) ql => ql_1
271	IF ( cloud_droplets ) THEN
272	ql => ql_1
273	ql_c => ql_2
274	ENDIF
275	ENDIF
276
277	ELSE
278
279	rif => rif_1
280	shf => shf_1
281	tswst => tswst_1
282	usws => usws_1
283	vsws => vsws_1
284	e => e_1; e_p => e_2; te_m => e_3; e_m => e_3
285	kh => kh_1
286	km => km_1
287	pt => pt_1; pt_p => pt_2; tpt_m => pt_3; pt_m => pt_3
288	u => u_1; u_p => u_2; tu_m => u_3; u_m => u_3
289	v => v_1; v_p => v_2; tv_m => v_3; v_m => v_3
290	w => w_1; w_p => w_2; tw_m => w_3; w_m => w_3
291
292	IF ( humidity .OR. passive_scalar ) THEN
293	qsws => qsws_1
294	qswst => qswst_1
295	q => q_1; q_p => q_2; tq_m => q_3; q_m => q_3
296	IF ( humidity ) vpt => vpt_1
297	IF ( cloud_physics ) ql => ql_1
298	IF ( cloud_droplets ) THEN
299	ql => ql_1
300	ql_c => ql_2
301	ENDIF
302	ENDIF
303
304	IF ( ocean ) THEN
305	saswst => saswst_1
306	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
307	ENDIF
308
309	ENDIF
310
311	!
312	!-- Initialize model variables
313	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
314	!
315	!-- First model run of a possible job queue.
316	!-- Initial profiles of the variables must be computes.
317	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
318	!
319	!-- Use solutions of the 1D model as initial profiles,
320	!-- start 1D model
321	CALL init_1d_model
322	!
323	!-- Transfer initial profiles to the arrays of the 3D model
324	DO i = nxl-1, nxr+1
325	DO j = nys-1, nyn+1
326	e(:,j,i) = e1d
327	kh(:,j,i) = kh1d
328	km(:,j,i) = km1d
329	pt(:,j,i) = pt_init
330	u(:,j,i) = u1d
331	v(:,j,i) = v1d
332	ENDDO
333	ENDDO
334
335	IF ( humidity .OR. passive_scalar ) THEN
336	DO i = nxl-1, nxr+1
337	DO j = nys-1, nyn+1
338	q(:,j,i) = q_init
339	ENDDO
340	ENDDO
341	ENDIF
342
343	IF ( .NOT. constant_diffusion ) THEN
344	DO i = nxl-1, nxr+1
345	DO j = nys-1, nyn+1
346	e(:,j,i) = e1d
347	ENDDO
348	ENDDO
349	!
350	!-- Store initial profiles for output purposes etc.
351	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
352
353	IF ( prandtl_layer ) THEN
354	rif = rif1d(nzb+1)
355	ts = 0.0 ! could actually be computed more accurately in the
356	! 1D model. Update when opportunity arises.
357	us = us1d
358	usws = usws1d
359	vsws = vsws1d
360	ELSE
361	ts = 0.0 ! must be set, because used in
362	rif = 0.0 ! flowste
363	us = 0.0
364	usws = 0.0
365	vsws = 0.0
366	ENDIF
367
368	ELSE
369	e = 0.0 ! must be set, because used in
370	rif = 0.0 ! flowste
371	ts = 0.0
372	us = 0.0
373	usws = 0.0
374	vsws = 0.0
375	ENDIF
376
377	!
378	!-- In every case qs = 0.0 (see also pt)
379	!-- This could actually be computed more accurately in the 1D model.
380	!-- Update when opportunity arises!
381	IF ( humidity .OR. passive_scalar ) qs = 0.0
382
383	!
384	!-- inside buildings set velocities back to zero
385	IF ( topography /= 'flat' ) THEN
386	DO i = nxl-1, nxr+1
387	DO j = nys-1, nyn+1
388	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
389	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
390	ENDDO
391	ENDDO
392	!
393	!-- WARNING: The extra boundary conditions set after running the
394	!-- ------- 1D model impose an error on the divergence one layer
395	!-- below the topography; need to correct later
396	!-- ATTENTION: Provisional correction for Piacsek & Williams
397	!-- --------- advection scheme: keep u and v zero one layer below
398	!-- the topography.
399	IF ( ibc_uv_b == 0 ) THEN
400	!
401	!-- Satisfying the Dirichlet condition with an extra layer below
402	!-- the surface where the u and v component change their sign.
403	DO i = nxl-1, nxr+1
404	DO j = nys-1, nyn+1
405	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = -u(1,j,i)
406	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = -v(1,j,i)
407	ENDDO
408	ENDDO
409
410	ELSE
411	!
412	!-- Neumann condition
413	DO i = nxl-1, nxr+1
414	DO j = nys-1, nyn+1
415	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
416	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
417	ENDDO
418	ENDDO
419
420	ENDIF
421
422	ENDIF
423
424	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
425	THEN
426	!
427	!-- Use constructed initial profiles (velocity constant with height,
428	!-- temperature profile with constant gradient)
429	DO i = nxl-1, nxr+1
430	DO j = nys-1, nyn+1
431	pt(:,j,i) = pt_init
432	u(:,j,i) = u_init
433	v(:,j,i) = v_init
434	ENDDO
435	ENDDO
436
437	!
438	!-- Set initial horizontal velocities at the lowest computational grid levels
439	!-- to zero in order to avoid too small time steps caused by the diffusion
440	!-- limit in the initial phase of a run (at k=1, dz/2 occurs in the
441	!-- limiting formula!). The original values are stored to be later used for
442	!-- volume flow control.
443	DO i = nxl-1, nxr+1
444	DO j = nys-1, nyn+1
445	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
446	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
447	ENDDO
448	ENDDO
449	IF ( conserve_volume_flow ) THEN
450	IF ( nxr == nx ) THEN
451	DO j = nys, nyn
452	k = nzb_u_inner(j,nx) + 1
453	u_nzb_p1_for_vfc(j) = u_init(k) * dzu(k)
454	ENDDO
455	ENDIF
456	IF ( nyn == ny ) THEN
457	DO i = nxl, nxr
458	k = nzb_v_inner(ny,i) + 1
459	v_nzb_p1_for_vfc(i) = v_init(k) * dzu(k)
460	ENDDO
461	ENDIF
462	ENDIF
463
464	IF ( humidity .OR. passive_scalar ) THEN
465	DO i = nxl-1, nxr+1
466	DO j = nys-1, nyn+1
467	q(:,j,i) = q_init
468	ENDDO
469	ENDDO
470	ENDIF
471
472	IF ( ocean ) THEN
473	DO i = nxl-1, nxr+1
474	DO j = nys-1, nyn+1
475	sa(:,j,i) = sa_init
476	ENDDO
477	ENDDO
478	ENDIF
479
480	IF ( constant_diffusion ) THEN
481	km = km_constant
482	kh = km / prandtl_number
483	ELSE
484	kh = 0.01 ! there must exist an initial diffusion, because
485	km = 0.01 ! otherwise no TKE would be produced by the
486	! production terms, as long as not yet
487	! e = (u/cm)*2 at k=nzb+1
488	ENDIF
489	e = 0.0
490	rif = 0.0
491	ts = 0.0
492	us = 0.0
493	usws = 0.0
494	vsws = 0.0
495	IF ( humidity .OR. passive_scalar ) qs = 0.0
496
497	!
498	!-- Compute initial temperature field and other constants used in case
499	!-- of a sloping surface
500	IF ( sloping_surface ) CALL init_slope
501
502	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
503	THEN
504	!
505	!-- Initialization will completely be done by the user
506	CALL user_init_3d_model
507
508	ENDIF
509
510	!
511	!-- Calculate virtual potential temperature
512	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
513
514	!
515	!-- Store initial profiles for output purposes etc.
516	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
517	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
518	IF ( ibc_uv_b == 0 ) THEN
519	hom(nzb,1,5,:) = -hom(nzb+1,1,5,:) ! due to satisfying the Dirichlet
520	hom(nzb,1,6,:) = -hom(nzb+1,1,6,:) ! condition with an extra layer
521	! below the surface where the u and v component change their sign
522	ENDIF
523	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
524	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
525	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
526
527
528	IF ( humidity ) THEN
529	!
530	!-- Store initial profile of total water content, virtual potential
531	!-- temperature
532	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
533	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
534	IF ( cloud_physics .OR. cloud_droplets ) THEN
535	!
536	!-- Store initial profile of specific humidity and potential
537	!-- temperature
538	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
539	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
540	ENDIF
541	ENDIF
542
543	IF ( passive_scalar ) THEN
544	!
545	!-- Store initial scalar profile
546	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
547	ENDIF
548
549	!
550	!-- Initialize fluxes at bottom surface
551	IF ( use_surface_fluxes ) THEN
552
553	IF ( constant_heatflux ) THEN
554	!
555	!-- Heat flux is prescribed
556	IF ( random_heatflux ) THEN
557	CALL disturb_heatflux
558	ELSE
559	shf = surface_heatflux
560	!
561	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
562	IF ( TRIM( topography ) /= 'flat' ) THEN
563	DO i = nxl-1, nxr+1
564	DO j = nys-1, nyn+1
565	IF ( nzb_s_inner(j,i) /= 0 ) THEN
566	shf(j,i) = wall_heatflux(0)
567	ENDIF
568	ENDDO
569	ENDDO
570	ENDIF
571	ENDIF
572	IF ( ASSOCIATED( shf_m ) ) shf_m = shf
573	ENDIF
574
575	!
576	!-- Determine the near-surface water flux
577	IF ( humidity .OR. passive_scalar ) THEN
578	IF ( constant_waterflux ) THEN
579	qsws = surface_waterflux
580	IF ( ASSOCIATED( qsws_m ) ) qsws_m = qsws
581	ENDIF
582	ENDIF
583
584	ENDIF
585
586	!
587	!-- Initialize fluxes at top surface
588	!-- Currently, only the heatflux and salinity flux can be prescribed.
589	!-- The latent flux is zero in this case!
590	IF ( use_top_fluxes ) THEN
591
592	IF ( constant_top_heatflux ) THEN
593	!
594	!-- Heat flux is prescribed
595	tswst = top_heatflux
596	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
597
598	IF ( humidity .OR. passive_scalar ) THEN
599	qswst = 0.0
600	IF ( ASSOCIATED( qswst_m ) ) qswst_m = qswst
601	ENDIF
602
603	IF ( ocean ) THEN
604	saswst = top_salinityflux
605	ENDIF
606	ENDIF
607
608	ENDIF
609
610	!
611	!-- Initialize Prandtl layer quantities
612	IF ( prandtl_layer ) THEN
613
614	z0 = roughness_length
615
616	IF ( .NOT. constant_heatflux ) THEN
617	!
618	!-- Surface temperature is prescribed. Here the heat flux cannot be
619	!-- simply estimated, because therefore rif, u* and theta* would have
620	!-- to be computed by iteration. This is why the heat flux is assumed
621	!-- to be zero before the first time step. It approaches its correct
622	!-- value in the course of the first few time steps.
623	shf = 0.0
624	IF ( ASSOCIATED( shf_m ) ) shf_m = 0.0
625	ENDIF
626
627	IF ( humidity .OR. passive_scalar ) THEN
628	IF ( .NOT. constant_waterflux ) THEN
629	qsws = 0.0
630	IF ( ASSOCIATED( qsws_m ) ) qsws_m = 0.0
631	ENDIF
632	ENDIF
633
634	ENDIF
635
636	!
637	!-- Calculate the initial volume flow at the right and north boundary
638	IF ( conserve_volume_flow ) THEN
639
640	volume_flow_initial_l = 0.0
641	volume_flow_area_l = 0.0
642
643	IF ( nxr == nx ) THEN
644	DO j = nys, nyn
645	DO k = nzb_2d(j,nx) + 1, nzt
646	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
647	u(k,j,nx) * dzu(k)
648	volume_flow_area_l(1) = volume_flow_area_l(1) + dzu(k)
649	ENDDO
650	!
651	!-- Correction if velocity at nzb+1 has been set zero further above
652	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
653	u_nzb_p1_for_vfc(j)
654	ENDDO
655	ENDIF
656
657	IF ( nyn == ny ) THEN
658	DO i = nxl, nxr
659	DO k = nzb_2d(ny,i) + 1, nzt
660	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
661	v(k,ny,i) * dzu(k)
662	volume_flow_area_l(2) = volume_flow_area_l(2) + dzu(k)
663	ENDDO
664	!
665	!-- Correction if velocity at nzb+1 has been set zero further above
666	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
667	v_nzb_p1_for_vfc(i)
668	ENDDO
669	ENDIF
670
671	#if defined( __parallel )
672	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
673	2, MPI_REAL, MPI_SUM, comm2d, ierr )
674	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
675	2, MPI_REAL, MPI_SUM, comm2d, ierr )
676	#else
677	volume_flow_initial = volume_flow_initial_l
678	volume_flow_area = volume_flow_area_l
679	#endif
680	ENDIF
681
682	!
683	!-- For the moment, perturbation pressure and vertical velocity are zero
684	p = 0.0; w = 0.0
685
686	!
687	!-- Initialize array sums (must be defined in first call of pres)
688	sums = 0.0
689
690	!
691	!-- Treating cloud physics, liquid water content and precipitation amount
692	!-- are zero at beginning of the simulation
693	IF ( cloud_physics ) THEN
694	ql = 0.0
695	IF ( precipitation ) precipitation_amount = 0.0
696	ENDIF
697
698	!
699	!-- Initialize spectra
700	IF ( dt_dosp /= 9999999.9 ) THEN
701	spectrum_x = 0.0
702	spectrum_y = 0.0
703	ENDIF
704
705	!
706	!-- Impose vortex with vertical axis on the initial velocity profile
707	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
708	CALL init_rankine
709	ENDIF
710
711	!
712	!-- Impose temperature anomaly (advection test only)
713	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
714	CALL init_pt_anomaly
715	ENDIF
716
717	!
718	!-- If required, change the surface temperature at the start of the 3D run
719	IF ( pt_surface_initial_change /= 0.0 ) THEN
720	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
721	ENDIF
722
723	!
724	!-- If required, change the surface humidity/scalar at the start of the 3D
725	!-- run
726	IF ( ( humidity .OR. passive_scalar ) .AND. &
727	q_surface_initial_change /= 0.0 ) THEN
728	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
729	ENDIF
730
731	!
732	!-- Initialize the random number generator (from numerical recipes)
733	CALL random_function_ini
734
735	!
736	!-- Impose random perturbation on the horizontal velocity field and then
737	!-- remove the divergences from the velocity field
738	IF ( create_disturbances ) THEN
739	CALL disturb_field( nzb_u_inner, tend, u )
740	CALL disturb_field( nzb_v_inner, tend, v )
741	n_sor = nsor_ini
742	CALL pres
743	n_sor = nsor
744	ENDIF
745
746	!
747	!-- Once again set the perturbation pressure explicitly to zero in order to
748	!-- assure that it does not generate any divergences in the first time step.
749	!-- At t=0 the velocity field is free of divergence (as constructed above).
750	!-- Divergences being created during a time step are not yet known and thus
751	!-- cannot be corrected during the time step yet.
752	p = 0.0
753
754	!
755	!-- Initialize old and new time levels.
756	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
757	e_m = e; pt_m = pt; u_m = u; v_m = v; w_m = w; kh_m = kh; km_m = km
758	ELSE
759	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
760	ENDIF
761	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
762
763	IF ( humidity .OR. passive_scalar ) THEN
764	IF ( ASSOCIATED( q_m ) ) q_m = q
765	IF ( timestep_scheme(1:5) == 'runge' ) tq_m = 0.0
766	q_p = q
767	IF ( humidity .AND. ASSOCIATED( vpt_m ) ) vpt_m = vpt
768	ENDIF
769
770	IF ( ocean ) THEN
771	tsa_m = 0.0
772	sa_p = sa
773	ENDIF
774
775	!
776	!-- Initialize old timelevels needed for radiation boundary conditions
777	IF ( outflow_l ) THEN
778	u_m_l(:,:,:) = u(:,:,-1:1)
779	v_m_l(:,:,:) = v(:,:,-1:1)
780	w_m_l(:,:,:) = w(:,:,-1:1)
781	ENDIF
782	IF ( outflow_r ) THEN
783	u_m_r(:,:,:) = u(:,:,nx-1:nx+1)
784	v_m_r(:,:,:) = v(:,:,nx-1:nx+1)
785	w_m_r(:,:,:) = w(:,:,nx-1:nx+1)
786	ENDIF
787	IF ( outflow_s ) THEN
788	u_m_s(:,:,:) = u(:,-1:1,:)
789	v_m_s(:,:,:) = v(:,-1:1,:)
790	w_m_s(:,:,:) = w(:,-1:1,:)
791	ENDIF
792	IF ( outflow_n ) THEN
793	u_m_n(:,:,:) = u(:,ny-1:ny+1,:)
794	v_m_n(:,:,:) = v(:,ny-1:ny+1,:)
795	w_m_n(:,:,:) = w(:,ny-1:ny+1,:)
796	ENDIF
797
798	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' ) &
799	THEN
800	!
801	!-- Read binary data from restart file
802	CALL read_3d_binary
803
804	!
805	!-- Calculate initial temperature field and other constants used in case
806	!-- of a sloping surface
807	IF ( sloping_surface ) CALL init_slope
808
809	!
810	!-- Initialize new time levels (only done in order to set boundary values
811	!-- including ghost points)
812	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
813	IF ( humidity .OR. passive_scalar ) q_p = q
814	IF ( ocean ) sa_p = sa
815
816	ELSE
817	!
818	!-- Actually this part of the programm should not be reached
819	IF ( myid == 0 ) PRINT*,'+++ init_3d_model: unknown initializing ', &
820	'problem'
821	CALL local_stop
822	ENDIF
823
824	!
825	!-- If required, initialize dvrp-software
826	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
827
828	!
829	!-- If required, initialize quantities for handling cloud physics
830	!-- This routine must be called before init_particles, because
831	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
832	!-- init_particles) is not defined.
833	CALL init_cloud_physics
834
835	!
836	!-- If required, initialize particles
837	IF ( particle_advection ) CALL init_particles
838
839	!
840	!-- Initialize quantities for special advections schemes
841	CALL init_advec
842
843	!
844	!-- Initialize Rayleigh damping factors
845	rdf = 0.0
846	IF ( rayleigh_damping_factor /= 0.0 ) THEN
847	DO k = nzb+1, nzt
848	IF ( zu(k) >= rayleigh_damping_height ) THEN
849	rdf(k) = rayleigh_damping_factor * &
850	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
851	/ ( zu(nzt) - rayleigh_damping_height ) )&
852	)**2
853	ENDIF
854	ENDDO
855	ENDIF
856
857	!
858	!-- Initialize diffusivities used within the outflow damping layer in case of
859	!-- non-cyclic lateral boundaries. A linear increase is assumed over the first
860	!-- half of the width of the damping layer
861	IF ( bc_lr == 'dirichlet/radiation' ) THEN
862
863	DO i = nxl-1, nxr+1
864	IF ( i >= nx - outflow_damping_width ) THEN
865	km_damp_x(i) = km_damp_max * MIN( 1.0, &
866	( i - ( nx - outflow_damping_width ) ) / &
867	REAL( outflow_damping_width/2 ) &
868	)
869	ELSE
870	km_damp_x(i) = 0.0
871	ENDIF
872	ENDDO
873
874	ELSEIF ( bc_lr == 'radiation/dirichlet' ) THEN
875
876	DO i = nxl-1, nxr+1
877	IF ( i <= outflow_damping_width ) THEN
878	km_damp_x(i) = km_damp_max * MIN( 1.0, &
879	( outflow_damping_width - i ) / &
880	REAL( outflow_damping_width/2 ) &
881	)
882	ELSE
883	km_damp_x(i) = 0.0
884	ENDIF
885	ENDDO
886
887	ENDIF
888
889	IF ( bc_ns == 'dirichlet/radiation' ) THEN
890
891	DO j = nys-1, nyn+1
892	IF ( j >= ny - outflow_damping_width ) THEN
893	km_damp_y(j) = km_damp_max * MIN( 1.0, &
894	( j - ( ny - outflow_damping_width ) ) / &
895	REAL( outflow_damping_width/2 ) &
896	)
897	ELSE
898	km_damp_y(j) = 0.0
899	ENDIF
900	ENDDO
901
902	ELSEIF ( bc_ns == 'radiation/dirichlet' ) THEN
903
904	DO j = nys-1, nyn+1
905	IF ( j <= outflow_damping_width ) THEN
906	km_damp_y(j) = km_damp_max * MIN( 1.0, &
907	( outflow_damping_width - j ) / &
908	REAL( outflow_damping_width/2 ) &
909	)
910	ELSE
911	km_damp_y(j) = 0.0
912	ENDIF
913	ENDDO
914
915	ENDIF
916
917	!
918	!-- Initialize local summation arrays for UP flow_statistics. This is necessary
919	!-- because they may not yet have been initialized when they are called from
920	!-- flow_statistics (or - depending on the chosen model run - are never
921	!-- initialized)
922	sums_divnew_l = 0.0
923	sums_divold_l = 0.0
924	sums_l_l = 0.0
925	sums_up_fraction_l = 0.0
926	sums_wsts_bc_l = 0.0
927
928	!
929	!-- Pre-set masks for regional statistics. Default is the total model domain.
930	rmask = 1.0
931
932	!
933	!-- User-defined initializing actions. Check afterwards, if maximum number
934	!-- of allowed timeseries is not exceeded
935	CALL user_init
936
937	IF ( dots_num > dots_max ) THEN
938	IF ( myid == 0 ) THEN
939	PRINT*, '+++ user_init: number of time series quantities exceeds', &
940	' its maximum of dots_max = ', dots_max
941	PRINT*, ' Please increase dots_max in modules.f90.'
942	ENDIF
943	CALL local_stop
944	ENDIF
945
946	!
947	!-- Input binary data file is not needed anymore. This line must be placed
948	!-- after call of user_init!
949	CALL close_file( 13 )
950
951	!
952	!-- Compute total sum of active mask grid points
953	!-- ngp_2dh: number of grid points of a horizontal cross section through the
954	!-- total domain
955	!-- ngp_3d: number of grid points of the total domain
956	!-- Note: The lower vertical index nzb_s_outer imposes a small error on the 2D
957	!-- ---- averages of staggered variables such as u and v due to the topography
958	!-- arrangement on the staggered grid. Maybe revise later.
959	ngp_2dh_outer_l = 0
960	ngp_2dh_outer = 0
961	ngp_2dh_l = 0
962	ngp_2dh = 0
963	ngp_3d_inner_l = 0
964	ngp_3d_inner = 0
965	ngp_3d = 0
966	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
967
968	DO sr = 0, statistic_regions
969	DO i = nxl, nxr
970	DO j = nys, nyn
971	IF ( rmask(j,i,sr) == 1.0 ) THEN
972	!
973	!-- All xy-grid points
974	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
975	!
976	!-- xy-grid points above topography
977	DO k = nzb_s_outer(j,i), nz + 1
978	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
979	ENDDO
980	!
981	!-- All grid points of the total domain above topography
982	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
983	( nz - nzb_s_inner(j,i) + 2 )
984	ENDIF
985	ENDDO
986	ENDDO
987	ENDDO
988
989	sr = statistic_regions + 1
990	#if defined( __parallel )
991	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
992	comm2d, ierr )
993	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
994	MPI_INTEGER, MPI_SUM, comm2d, ierr )
995	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner(0), sr, MPI_INTEGER, &
996	MPI_SUM, comm2d, ierr )
997	#else
998	ngp_2dh = ngp_2dh_l
999	ngp_2dh_outer = ngp_2dh_outer_l
1000	ngp_3d_inner = ngp_3d_inner_l
1001	#endif
1002
1003	ngp_3d = ngp_2dh * ( nz + 2 )
1004
1005	!
1006	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1007	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1008	!-- the respective subdomain lie below the surface topography
1009	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1010	ngp_3d_inner = MAX( 1, ngp_3d_inner(:) )
1011
1012	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l )
1013
1014
1015	END SUBROUTINE init_3d_model

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