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source: palm/trunk/SOURCE/init_3d_model.f90 @ 109

Last change on this file since 109 was 108, checked in by letzel, 17 years ago

Improved coupler: evaporation - salinity-flux coupling for humidity = .T.,

avoid MPI hangs when coupled runs terminate, add DOC/app/chapter_3.8;

Optional calculation of km and kh from initial TKE e_init;
Default initialization of km,kh = 0.00001 for ocean = .T.;
Allow data_output_pr= q, wq, w"q", w*q* for humidity = .T.;
Bugfix: Rayleigh damping for ocean fixed.

Property svn:keywords set to Id

File size: 37.4 KB

Line
1	#if defined( __ibmy_special )
2	@PROCESS NOOPTimize
3	#endif
4	SUBROUTINE init_3d_model
5
6	!------------------------------------------------------------------------------!
7	! Actual revisions:
8	! -----------------
9	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
10	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
11	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
12	! Rayleigh damping for ocean
13	! optionally calculate km and kh from initial TKE e_init
14	!
15	! Former revisions:
16	! -----------------
17	! $Id: init_3d_model.f90 108 2007-08-24 15:10:38Z letzel $
18	!
19	! 97 2007-06-21 08:23:15Z raasch
20	! Initialization of salinity, call of init_ocean
21	!
22	! 87 2007-05-22 15:46:47Z raasch
23	! var_hom and var_sum renamed pr_palm
24	!
25	! 75 2007-03-22 09:54:05Z raasch
26	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
27	! bugfix for cases with the outflow damping layer extending over more than one
28	! subdomain, moisture renamed humidity,
29	! new initializing action "by_user" calls user_init_3d_model,
30	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
31	! initial velocities at nzb+1 are regarded for volume
32	! flow control in case they have been set zero before (to avoid small timesteps)
33	! -uvmean_outflow, uxrp, vynp eliminated
34	!
35	! 19 2007-02-23 04:53:48Z raasch
36	! +handling of top fluxes
37	!
38	! RCS Log replace by Id keyword, revision history cleaned up
39	!
40	! Revision 1.49 2006/08/22 15:59:07 raasch
41	! No optimization of this file on the ibmy (Yonsei Univ.)
42	!
43	! Revision 1.1 1998/03/09 16:22:22 raasch
44	! Initial revision
45	!
46	!
47	! Description:
48	! ------------
49	! Allocation of arrays and initialization of the 3D model via
50	! a) pre-run the 1D model
51	! or
52	! b) pre-set constant linear profiles
53	! or
54	! c) read values of a previous run
55	!------------------------------------------------------------------------------!
56
57	USE arrays_3d
58	USE averaging
59	USE cloud_parameters
60	USE constants
61	USE control_parameters
62	USE cpulog
63	USE indices
64	USE interfaces
65	USE model_1d
66	USE netcdf_control
67	USE particle_attributes
68	USE pegrid
69	USE profil_parameter
70	USE random_function_mod
71	USE statistics
72
73	IMPLICIT NONE
74
75	INTEGER :: i, j, k, sr
76
77	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l, ngp_3d_inner_l
78
79	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l
80
81	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
82
83
84	!
85	!-- Allocate arrays
86	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
87	ngp_3d(0:statistic_regions), &
88	ngp_3d_inner(0:statistic_regions), &
89	ngp_3d_inner_l(0:statistic_regions), &
90	sums_divnew_l(0:statistic_regions), &
91	sums_divold_l(0:statistic_regions) )
92	ALLOCATE( rdf(nzb+1:nzt) )
93	ALLOCATE( hom_sum(nzb:nzt+1,pr_palm+max_pr_user,0:statistic_regions), &
94	ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
95	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
96	rmask(nys-1:nyn+1,nxl-1:nxr+1,0:statistic_regions), &
97	sums(nzb:nzt+1,pr_palm+max_pr_user), &
98	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
99	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
100	sums_up_fraction_l(10,3,0:statistic_regions), &
101	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
102	ts_value(var_ts,0:statistic_regions) )
103	ALLOCATE( km_damp_x(nxl-1:nxr+1), km_damp_y(nys-1:nyn+1) )
104
105	ALLOCATE( rif_1(nys-1:nyn+1,nxl-1:nxr+1), shf_1(nys-1:nyn+1,nxl-1:nxr+1), &
106	ts(nys-1:nyn+1,nxl-1:nxr+1), tswst_1(nys-1:nyn+1,nxl-1:nxr+1), &
107	us(nys-1:nyn+1,nxl-1:nxr+1), usws_1(nys-1:nyn+1,nxl-1:nxr+1), &
108	uswst_1(nys-1:nyn+1,nxl-1:nxr+1), &
109	vsws_1(nys-1:nyn+1,nxl-1:nxr+1), &
110	vswst_1(nys-1:nyn+1,nxl-1:nxr+1), z0(nys-1:nyn+1,nxl-1:nxr+1) )
111
112	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
113	!
114	!-- Leapfrog scheme needs two timelevels of diffusion quantities
115	ALLOCATE( rif_2(nys-1:nyn+1,nxl-1:nxr+1), &
116	shf_2(nys-1:nyn+1,nxl-1:nxr+1), &
117	tswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
118	usws_2(nys-1:nyn+1,nxl-1:nxr+1), &
119	uswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
120	vswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
121	vsws_2(nys-1:nyn+1,nxl-1:nxr+1) )
122	ENDIF
123
124	ALLOCATE( d(nzb+1:nzta,nys:nyna,nxl:nxra), &
125	e_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
126	e_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
127	e_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
128	kh_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
129	km_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
130	p(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
131	pt_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
132	pt_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
133	pt_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
134	tend(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
135	u_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
136	u_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
137	u_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
138	v_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
139	v_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
140	v_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
141	w_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
142	w_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
143	w_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
144
145	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
146	ALLOCATE( kh_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
147	km_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
148	ENDIF
149
150	IF ( humidity .OR. passive_scalar ) THEN
151	!
152	!-- 2D-humidity/scalar arrays
153	ALLOCATE ( qs(nys-1:nyn+1,nxl-1:nxr+1), &
154	qsws_1(nys-1:nyn+1,nxl-1:nxr+1), &
155	qswst_1(nys-1:nyn+1,nxl-1:nxr+1) )
156
157	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
158	ALLOCATE( qsws_2(nys-1:nyn+1,nxl-1:nxr+1), &
159	qswst_2(nys-1:nyn+1,nxl-1:nxr+1) )
160	ENDIF
161	!
162	!-- 3D-humidity/scalar arrays
163	ALLOCATE( q_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
164	q_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
165	q_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
166
167	!
168	!-- 3D-arrays needed for humidity only
169	IF ( humidity ) THEN
170	ALLOCATE( vpt_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
171
172	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
173	ALLOCATE( vpt_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
174	ENDIF
175
176	IF ( cloud_physics ) THEN
177	!
178	!-- Liquid water content
179	ALLOCATE ( ql_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
180	!
181	!-- Precipitation amount and rate (only needed if output is switched)
182	ALLOCATE( precipitation_amount(nys-1:nyn+1,nxl-1:nxr+1), &
183	precipitation_rate(nys-1:nyn+1,nxl-1:nxr+1) )
184	ENDIF
185
186	IF ( cloud_droplets ) THEN
187	!
188	!-- Liquid water content, change in liquid water content,
189	!-- real volume of particles (with weighting), volume of particles
190	ALLOCATE ( ql_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
191	ql_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
192	ql_v(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
193	ql_vp(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
194	ENDIF
195
196	ENDIF
197
198	ENDIF
199
200	IF ( ocean ) THEN
201	ALLOCATE( saswsb_1(nys-1:nyn+1,nxl-1:nxr+1), &
202	saswst_1(nys-1:nyn+1,nxl-1:nxr+1) )
203	ALLOCATE( rho_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
204	sa_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
205	sa_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
206	sa_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
207	rho => rho_1 ! routine calc_mean_profile requires density to be a
208	! pointer
209	IF ( humidity_remote ) THEN
210	ALLOCATE( qswst_remote(nys-1:nyn+1,nxl-1:nxr+1) )
211	qswst_remote = 0.0
212	ENDIF
213	ENDIF
214
215	!
216	!-- 3D-array for storing the dissipation, needed for calculating the sgs
217	!-- particle velocities
218	IF ( use_sgs_for_particles ) THEN
219	ALLOCATE ( diss(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
220	ENDIF
221
222	IF ( dt_dosp /= 9999999.9 ) THEN
223	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
224	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
225	ENDIF
226
227	!
228	!-- 4D-array for storing the Rif-values at vertical walls
229	IF ( topography /= 'flat' ) THEN
230	ALLOCATE( rif_wall(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1,1:4) )
231	rif_wall = 0.0
232	ENDIF
233
234	!
235	!-- Velocities at nzb+1 needed for volume flow control
236	IF ( conserve_volume_flow ) THEN
237	ALLOCATE( u_nzb_p1_for_vfc(nys:nyn), v_nzb_p1_for_vfc(nxl:nxr) )
238	u_nzb_p1_for_vfc = 0.0
239	v_nzb_p1_for_vfc = 0.0
240	ENDIF
241
242	!
243	!-- Arrays to store velocity data from t-dt and the phase speeds which
244	!-- are needed for radiation boundary conditions
245	IF ( outflow_l ) THEN
246	ALLOCATE( u_m_l(nzb:nzt+1,nys-1:nyn+1,1:2), &
247	v_m_l(nzb:nzt+1,nys-1:nyn+1,0:1), &
248	w_m_l(nzb:nzt+1,nys-1:nyn+1,0:1) )
249	ENDIF
250	IF ( outflow_r ) THEN
251	ALLOCATE( u_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx), &
252	v_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx), &
253	w_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx) )
254	ENDIF
255	IF ( outflow_l .OR. outflow_r ) THEN
256	ALLOCATE( c_u(nzb:nzt+1,nys-1:nyn+1), c_v(nzb:nzt+1,nys-1:nyn+1), &
257	c_w(nzb:nzt+1,nys-1:nyn+1) )
258	ENDIF
259	IF ( outflow_s ) THEN
260	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxl-1:nxr+1), &
261	v_m_s(nzb:nzt+1,1:2,nxl-1:nxr+1), &
262	w_m_s(nzb:nzt+1,0:1,nxl-1:nxr+1) )
263	ENDIF
264	IF ( outflow_n ) THEN
265	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxl-1:nxr+1), &
266	v_m_n(nzb:nzt+1,ny-1:ny,nxl-1:nxr+1), &
267	w_m_n(nzb:nzt+1,ny-1:ny,nxl-1:nxr+1) )
268	ENDIF
269	IF ( outflow_s .OR. outflow_n ) THEN
270	ALLOCATE( c_u(nzb:nzt+1,nxl-1:nxr+1), c_v(nzb:nzt+1,nxl-1:nxr+1), &
271	c_w(nzb:nzt+1,nxl-1:nxr+1) )
272	ENDIF
273
274	!
275	!-- Initial assignment of the pointers
276	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
277
278	rif_m => rif_1; rif => rif_2
279	shf_m => shf_1; shf => shf_2
280	tswst_m => tswst_1; tswst => tswst_2
281	usws_m => usws_1; usws => usws_2
282	uswst_m => uswst_1; uswst => uswst_2
283	vsws_m => vsws_1; vsws => vsws_2
284	vswst_m => vswst_1; vswst => vswst_2
285	e_m => e_1; e => e_2; e_p => e_3; te_m => e_3
286	kh_m => kh_1; kh => kh_2
287	km_m => km_1; km => km_2
288	pt_m => pt_1; pt => pt_2; pt_p => pt_3; tpt_m => pt_3
289	u_m => u_1; u => u_2; u_p => u_3; tu_m => u_3
290	v_m => v_1; v => v_2; v_p => v_3; tv_m => v_3
291	w_m => w_1; w => w_2; w_p => w_3; tw_m => w_3
292
293	IF ( humidity .OR. passive_scalar ) THEN
294	qsws_m => qsws_1; qsws => qsws_2
295	qswst_m => qswst_1; qswst => qswst_2
296	q_m => q_1; q => q_2; q_p => q_3; tq_m => q_3
297	IF ( humidity ) vpt_m => vpt_1; vpt => vpt_2
298	IF ( cloud_physics ) ql => ql_1
299	IF ( cloud_droplets ) THEN
300	ql => ql_1
301	ql_c => ql_2
302	ENDIF
303	ENDIF
304
305	ELSE
306
307	rif => rif_1
308	shf => shf_1
309	tswst => tswst_1
310	usws => usws_1
311	uswst => uswst_1
312	vsws => vsws_1
313	vswst => vswst_1
314	e => e_1; e_p => e_2; te_m => e_3; e_m => e_3
315	kh => kh_1
316	km => km_1
317	pt => pt_1; pt_p => pt_2; tpt_m => pt_3; pt_m => pt_3
318	u => u_1; u_p => u_2; tu_m => u_3; u_m => u_3
319	v => v_1; v_p => v_2; tv_m => v_3; v_m => v_3
320	w => w_1; w_p => w_2; tw_m => w_3; w_m => w_3
321
322	IF ( humidity .OR. passive_scalar ) THEN
323	qsws => qsws_1
324	qswst => qswst_1
325	q => q_1; q_p => q_2; tq_m => q_3; q_m => q_3
326	IF ( humidity ) vpt => vpt_1
327	IF ( cloud_physics ) ql => ql_1
328	IF ( cloud_droplets ) THEN
329	ql => ql_1
330	ql_c => ql_2
331	ENDIF
332	ENDIF
333
334	IF ( ocean ) THEN
335	saswsb => saswsb_1
336	saswst => saswst_1
337	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
338	ENDIF
339
340	ENDIF
341
342	!
343	!-- Initialize model variables
344	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
345	!
346	!-- First model run of a possible job queue.
347	!-- Initial profiles of the variables must be computes.
348	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
349	!
350	!-- Use solutions of the 1D model as initial profiles,
351	!-- start 1D model
352	CALL init_1d_model
353	!
354	!-- Transfer initial profiles to the arrays of the 3D model
355	DO i = nxl-1, nxr+1
356	DO j = nys-1, nyn+1
357	e(:,j,i) = e1d
358	kh(:,j,i) = kh1d
359	km(:,j,i) = km1d
360	pt(:,j,i) = pt_init
361	u(:,j,i) = u1d
362	v(:,j,i) = v1d
363	ENDDO
364	ENDDO
365
366	IF ( humidity .OR. passive_scalar ) THEN
367	DO i = nxl-1, nxr+1
368	DO j = nys-1, nyn+1
369	q(:,j,i) = q_init
370	ENDDO
371	ENDDO
372	ENDIF
373
374	IF ( .NOT. constant_diffusion ) THEN
375	DO i = nxl-1, nxr+1
376	DO j = nys-1, nyn+1
377	e(:,j,i) = e1d
378	ENDDO
379	ENDDO
380	!
381	!-- Store initial profiles for output purposes etc.
382	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
383
384	IF ( prandtl_layer ) THEN
385	rif = rif1d(nzb+1)
386	ts = 0.0 ! could actually be computed more accurately in the
387	! 1D model. Update when opportunity arises.
388	us = us1d
389	usws = usws1d
390	vsws = vsws1d
391	ELSE
392	ts = 0.0 ! must be set, because used in
393	rif = 0.0 ! flowste
394	us = 0.0
395	usws = 0.0
396	vsws = 0.0
397	ENDIF
398
399	ELSE
400	e = 0.0 ! must be set, because used in
401	rif = 0.0 ! flowste
402	ts = 0.0
403	us = 0.0
404	usws = 0.0
405	vsws = 0.0
406	ENDIF
407	uswst = top_momentumflux_u
408	vswst = top_momentumflux_v
409
410	!
411	!-- In every case qs = 0.0 (see also pt)
412	!-- This could actually be computed more accurately in the 1D model.
413	!-- Update when opportunity arises!
414	IF ( humidity .OR. passive_scalar ) qs = 0.0
415
416	!
417	!-- inside buildings set velocities back to zero
418	IF ( topography /= 'flat' ) THEN
419	DO i = nxl-1, nxr+1
420	DO j = nys-1, nyn+1
421	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
422	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
423	ENDDO
424	ENDDO
425	!
426	!-- WARNING: The extra boundary conditions set after running the
427	!-- ------- 1D model impose an error on the divergence one layer
428	!-- below the topography; need to correct later
429	!-- ATTENTION: Provisional correction for Piacsek & Williams
430	!-- --------- advection scheme: keep u and v zero one layer below
431	!-- the topography.
432	IF ( ibc_uv_b == 0 ) THEN
433	!
434	!-- Satisfying the Dirichlet condition with an extra layer below
435	!-- the surface where the u and v component change their sign.
436	DO i = nxl-1, nxr+1
437	DO j = nys-1, nyn+1
438	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = -u(1,j,i)
439	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = -v(1,j,i)
440	ENDDO
441	ENDDO
442
443	ELSE
444	!
445	!-- Neumann condition
446	DO i = nxl-1, nxr+1
447	DO j = nys-1, nyn+1
448	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
449	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
450	ENDDO
451	ENDDO
452
453	ENDIF
454
455	ENDIF
456
457	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
458	THEN
459	!
460	!-- Use constructed initial profiles (velocity constant with height,
461	!-- temperature profile with constant gradient)
462	DO i = nxl-1, nxr+1
463	DO j = nys-1, nyn+1
464	pt(:,j,i) = pt_init
465	u(:,j,i) = u_init
466	v(:,j,i) = v_init
467	ENDDO
468	ENDDO
469
470	!
471	!-- Set initial horizontal velocities at the lowest computational grid levels
472	!-- to zero in order to avoid too small time steps caused by the diffusion
473	!-- limit in the initial phase of a run (at k=1, dz/2 occurs in the
474	!-- limiting formula!). The original values are stored to be later used for
475	!-- volume flow control.
476	DO i = nxl-1, nxr+1
477	DO j = nys-1, nyn+1
478	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
479	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
480	ENDDO
481	ENDDO
482	IF ( conserve_volume_flow ) THEN
483	IF ( nxr == nx ) THEN
484	DO j = nys, nyn
485	k = nzb_u_inner(j,nx) + 1
486	u_nzb_p1_for_vfc(j) = u_init(k) * dzu(k)
487	ENDDO
488	ENDIF
489	IF ( nyn == ny ) THEN
490	DO i = nxl, nxr
491	k = nzb_v_inner(ny,i) + 1
492	v_nzb_p1_for_vfc(i) = v_init(k) * dzu(k)
493	ENDDO
494	ENDIF
495	ENDIF
496
497	IF ( humidity .OR. passive_scalar ) THEN
498	DO i = nxl-1, nxr+1
499	DO j = nys-1, nyn+1
500	q(:,j,i) = q_init
501	ENDDO
502	ENDDO
503	ENDIF
504
505	IF ( ocean ) THEN
506	DO i = nxl-1, nxr+1
507	DO j = nys-1, nyn+1
508	sa(:,j,i) = sa_init
509	ENDDO
510	ENDDO
511	ENDIF
512
513	IF ( constant_diffusion ) THEN
514	km = km_constant
515	kh = km / prandtl_number
516	e = 0.0
517	ELSEIF ( e_init > 0.0 ) THEN
518	DO k = nzb+1, nzt
519	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
520	ENDDO
521	km(nzb,:,:) = km(nzb+1,:,:)
522	km(nzt+1,:,:) = km(nzt,:,:)
523	kh = km / prandtl_number
524	e = e_init
525	ELSE
526	IF ( .NOT. ocean ) THEN
527	kh = 0.01 ! there must exist an initial diffusion, because
528	km = 0.01 ! otherwise no TKE would be produced by the
529	! production terms, as long as not yet
530	! e = (u/cm)*2 at k=nzb+1
531	ELSE
532	kh = 0.00001
533	km = 0.00001
534	ENDIF
535	e = 0.0
536	ENDIF
537	rif = 0.0
538	ts = 0.0
539	us = 0.0
540	usws = 0.0
541	uswst = top_momentumflux_u
542	vsws = 0.0
543	vswst = top_momentumflux_v
544	IF ( humidity .OR. passive_scalar ) qs = 0.0
545
546	!
547	!-- Compute initial temperature field and other constants used in case
548	!-- of a sloping surface
549	IF ( sloping_surface ) CALL init_slope
550
551	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
552	THEN
553	!
554	!-- Initialization will completely be done by the user
555	CALL user_init_3d_model
556
557	ENDIF
558
559	!
560	!-- Calculate virtual potential temperature
561	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
562
563	!
564	!-- Store initial profiles for output purposes etc.
565	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
566	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
567	IF ( ibc_uv_b == 0 ) THEN
568	hom(nzb,1,5,:) = -hom(nzb+1,1,5,:) ! due to satisfying the Dirichlet
569	hom(nzb,1,6,:) = -hom(nzb+1,1,6,:) ! condition with an extra layer
570	! below the surface where the u and v component change their sign
571	ENDIF
572	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
573	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
574	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
575
576	IF ( ocean ) THEN
577	!
578	!-- Store initial salinity profile
579	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
580	ENDIF
581
582	IF ( humidity ) THEN
583	!
584	!-- Store initial profile of total water content, virtual potential
585	!-- temperature
586	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
587	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
588	IF ( cloud_physics .OR. cloud_droplets ) THEN
589	!
590	!-- Store initial profile of specific humidity and potential
591	!-- temperature
592	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
593	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
594	ENDIF
595	ENDIF
596
597	IF ( passive_scalar ) THEN
598	!
599	!-- Store initial scalar profile
600	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
601	ENDIF
602
603	!
604	!-- Initialize fluxes at bottom surface
605	IF ( use_surface_fluxes ) THEN
606
607	IF ( constant_heatflux ) THEN
608	!
609	!-- Heat flux is prescribed
610	IF ( random_heatflux ) THEN
611	CALL disturb_heatflux
612	ELSE
613	shf = surface_heatflux
614	!
615	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
616	IF ( TRIM( topography ) /= 'flat' ) THEN
617	DO i = nxl-1, nxr+1
618	DO j = nys-1, nyn+1
619	IF ( nzb_s_inner(j,i) /= 0 ) THEN
620	shf(j,i) = wall_heatflux(0)
621	ENDIF
622	ENDDO
623	ENDDO
624	ENDIF
625	ENDIF
626	IF ( ASSOCIATED( shf_m ) ) shf_m = shf
627	ENDIF
628
629	!
630	!-- Determine the near-surface water flux
631	IF ( humidity .OR. passive_scalar ) THEN
632	IF ( constant_waterflux ) THEN
633	qsws = surface_waterflux
634	IF ( ASSOCIATED( qsws_m ) ) qsws_m = qsws
635	ENDIF
636	ENDIF
637
638	ENDIF
639
640	!
641	!-- Initialize fluxes at top surface
642	!-- Currently, only the heatflux and salinity flux can be prescribed.
643	!-- The latent flux is zero in this case!
644	IF ( use_top_fluxes ) THEN
645
646	IF ( constant_top_heatflux ) THEN
647	!
648	!-- Heat flux is prescribed
649	tswst = top_heatflux
650	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
651
652	IF ( humidity .OR. passive_scalar ) THEN
653	qswst = 0.0
654	IF ( ASSOCIATED( qswst_m ) ) qswst_m = qswst
655	ENDIF
656
657	IF ( ocean ) THEN
658	saswsb = bottom_salinityflux
659	saswst = top_salinityflux
660	ENDIF
661	ENDIF
662
663	!
664	!-- Initialization in case of a coupled model run
665	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
666	tswst = 0.0
667	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
668	ENDIF
669
670	ENDIF
671
672	!
673	!-- Initialize Prandtl layer quantities
674	IF ( prandtl_layer ) THEN
675
676	z0 = roughness_length
677
678	IF ( .NOT. constant_heatflux ) THEN
679	!
680	!-- Surface temperature is prescribed. Here the heat flux cannot be
681	!-- simply estimated, because therefore rif, u* and theta* would have
682	!-- to be computed by iteration. This is why the heat flux is assumed
683	!-- to be zero before the first time step. It approaches its correct
684	!-- value in the course of the first few time steps.
685	shf = 0.0
686	IF ( ASSOCIATED( shf_m ) ) shf_m = 0.0
687	ENDIF
688
689	IF ( humidity .OR. passive_scalar ) THEN
690	IF ( .NOT. constant_waterflux ) THEN
691	qsws = 0.0
692	IF ( ASSOCIATED( qsws_m ) ) qsws_m = 0.0
693	ENDIF
694	ENDIF
695
696	ENDIF
697
698	!
699	!-- Calculate the initial volume flow at the right and north boundary
700	IF ( conserve_volume_flow ) THEN
701
702	volume_flow_initial_l = 0.0
703	volume_flow_area_l = 0.0
704
705	IF ( nxr == nx ) THEN
706	DO j = nys, nyn
707	DO k = nzb_2d(j,nx) + 1, nzt
708	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
709	u(k,j,nx) * dzu(k)
710	volume_flow_area_l(1) = volume_flow_area_l(1) + dzu(k)
711	ENDDO
712	!
713	!-- Correction if velocity at nzb+1 has been set zero further above
714	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
715	u_nzb_p1_for_vfc(j)
716	ENDDO
717	ENDIF
718
719	IF ( nyn == ny ) THEN
720	DO i = nxl, nxr
721	DO k = nzb_2d(ny,i) + 1, nzt
722	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
723	v(k,ny,i) * dzu(k)
724	volume_flow_area_l(2) = volume_flow_area_l(2) + dzu(k)
725	ENDDO
726	!
727	!-- Correction if velocity at nzb+1 has been set zero further above
728	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
729	v_nzb_p1_for_vfc(i)
730	ENDDO
731	ENDIF
732
733	#if defined( __parallel )
734	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
735	2, MPI_REAL, MPI_SUM, comm2d, ierr )
736	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
737	2, MPI_REAL, MPI_SUM, comm2d, ierr )
738	#else
739	volume_flow_initial = volume_flow_initial_l
740	volume_flow_area = volume_flow_area_l
741	#endif
742	ENDIF
743
744	!
745	!-- For the moment, perturbation pressure and vertical velocity are zero
746	p = 0.0; w = 0.0
747
748	!
749	!-- Initialize array sums (must be defined in first call of pres)
750	sums = 0.0
751
752	!
753	!-- Treating cloud physics, liquid water content and precipitation amount
754	!-- are zero at beginning of the simulation
755	IF ( cloud_physics ) THEN
756	ql = 0.0
757	IF ( precipitation ) precipitation_amount = 0.0
758	ENDIF
759
760	!
761	!-- Initialize spectra
762	IF ( dt_dosp /= 9999999.9 ) THEN
763	spectrum_x = 0.0
764	spectrum_y = 0.0
765	ENDIF
766
767	!
768	!-- Impose vortex with vertical axis on the initial velocity profile
769	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
770	CALL init_rankine
771	ENDIF
772
773	!
774	!-- Impose temperature anomaly (advection test only)
775	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
776	CALL init_pt_anomaly
777	ENDIF
778
779	!
780	!-- If required, change the surface temperature at the start of the 3D run
781	IF ( pt_surface_initial_change /= 0.0 ) THEN
782	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
783	ENDIF
784
785	!
786	!-- If required, change the surface humidity/scalar at the start of the 3D
787	!-- run
788	IF ( ( humidity .OR. passive_scalar ) .AND. &
789	q_surface_initial_change /= 0.0 ) THEN
790	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
791	ENDIF
792
793	!
794	!-- Initialize the random number generator (from numerical recipes)
795	CALL random_function_ini
796
797	!
798	!-- Impose random perturbation on the horizontal velocity field and then
799	!-- remove the divergences from the velocity field
800	IF ( create_disturbances ) THEN
801	CALL disturb_field( nzb_u_inner, tend, u )
802	CALL disturb_field( nzb_v_inner, tend, v )
803	n_sor = nsor_ini
804	CALL pres
805	n_sor = nsor
806	ENDIF
807
808	!
809	!-- Once again set the perturbation pressure explicitly to zero in order to
810	!-- assure that it does not generate any divergences in the first time step.
811	!-- At t=0 the velocity field is free of divergence (as constructed above).
812	!-- Divergences being created during a time step are not yet known and thus
813	!-- cannot be corrected during the time step yet.
814	p = 0.0
815
816	!
817	!-- Initialize old and new time levels.
818	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
819	e_m = e; pt_m = pt; u_m = u; v_m = v; w_m = w; kh_m = kh; km_m = km
820	ELSE
821	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
822	ENDIF
823	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
824
825	IF ( humidity .OR. passive_scalar ) THEN
826	IF ( ASSOCIATED( q_m ) ) q_m = q
827	IF ( timestep_scheme(1:5) == 'runge' ) tq_m = 0.0
828	q_p = q
829	IF ( humidity .AND. ASSOCIATED( vpt_m ) ) vpt_m = vpt
830	ENDIF
831
832	IF ( ocean ) THEN
833	tsa_m = 0.0
834	sa_p = sa
835	ENDIF
836
837	!
838	!-- Initialize old timelevels needed for radiation boundary conditions
839	IF ( outflow_l ) THEN
840	u_m_l(:,:,:) = u(:,:,1:2)
841	v_m_l(:,:,:) = v(:,:,0:1)
842	w_m_l(:,:,:) = w(:,:,0:1)
843	ENDIF
844	IF ( outflow_r ) THEN
845	u_m_r(:,:,:) = u(:,:,nx-1:nx)
846	v_m_r(:,:,:) = v(:,:,nx-1:nx)
847	w_m_r(:,:,:) = w(:,:,nx-1:nx)
848	ENDIF
849	IF ( outflow_s ) THEN
850	u_m_s(:,:,:) = u(:,0:1,:)
851	v_m_s(:,:,:) = v(:,1:2,:)
852	w_m_s(:,:,:) = w(:,0:1,:)
853	ENDIF
854	IF ( outflow_n ) THEN
855	u_m_n(:,:,:) = u(:,ny-1:ny,:)
856	v_m_n(:,:,:) = v(:,ny-1:ny,:)
857	w_m_n(:,:,:) = w(:,ny-1:ny,:)
858	ENDIF
859
860	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' ) &
861	THEN
862	!
863	!-- Read binary data from restart file
864	CALL read_3d_binary
865
866	!
867	!-- Calculate initial temperature field and other constants used in case
868	!-- of a sloping surface
869	IF ( sloping_surface ) CALL init_slope
870
871	!
872	!-- Initialize new time levels (only done in order to set boundary values
873	!-- including ghost points)
874	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
875	IF ( humidity .OR. passive_scalar ) q_p = q
876	IF ( ocean ) sa_p = sa
877
878	ELSE
879	!
880	!-- Actually this part of the programm should not be reached
881	IF ( myid == 0 ) PRINT*,'+++ init_3d_model: unknown initializing ', &
882	'problem'
883	CALL local_stop
884	ENDIF
885
886	!
887	!-- If required, initialize dvrp-software
888	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
889
890	IF ( ocean ) THEN
891	!
892	!-- Initialize quantities needed for the ocean model
893	CALL init_ocean
894	ELSE
895	!
896	!-- Initialize quantities for handling cloud physics
897	!-- This routine must be called before init_particles, because
898	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
899	!-- init_particles) is not defined.
900	CALL init_cloud_physics
901	ENDIF
902
903	!
904	!-- If required, initialize particles
905	IF ( particle_advection ) CALL init_particles
906
907	!
908	!-- Initialize quantities for special advections schemes
909	CALL init_advec
910
911	!
912	!-- Initialize Rayleigh damping factors
913	rdf = 0.0
914	IF ( rayleigh_damping_factor /= 0.0 ) THEN
915	IF ( .NOT. ocean ) THEN
916	DO k = nzb+1, nzt
917	IF ( zu(k) >= rayleigh_damping_height ) THEN
918	rdf(k) = rayleigh_damping_factor * &
919	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
920	/ ( zu(nzt) - rayleigh_damping_height ) )&
921	)**2
922	ENDIF
923	ENDDO
924	ELSE
925	DO k = nzt, nzb+1, -1
926	IF ( zu(k) <= rayleigh_damping_height ) THEN
927	rdf(k) = rayleigh_damping_factor * &
928	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
929	/ ( rayleigh_damping_height - zu(nzb+1)))&
930	)**2
931	ENDIF
932	ENDDO
933	ENDIF
934	ENDIF
935
936	!
937	!-- Initialize diffusivities used within the outflow damping layer in case of
938	!-- non-cyclic lateral boundaries. A linear increase is assumed over the first
939	!-- half of the width of the damping layer
940	IF ( bc_lr == 'dirichlet/radiation' ) THEN
941
942	DO i = nxl-1, nxr+1
943	IF ( i >= nx - outflow_damping_width ) THEN
944	km_damp_x(i) = km_damp_max * MIN( 1.0, &
945	( i - ( nx - outflow_damping_width ) ) / &
946	REAL( outflow_damping_width/2 ) &
947	)
948	ELSE
949	km_damp_x(i) = 0.0
950	ENDIF
951	ENDDO
952
953	ELSEIF ( bc_lr == 'radiation/dirichlet' ) THEN
954
955	DO i = nxl-1, nxr+1
956	IF ( i <= outflow_damping_width ) THEN
957	km_damp_x(i) = km_damp_max * MIN( 1.0, &
958	( outflow_damping_width - i ) / &
959	REAL( outflow_damping_width/2 ) &
960	)
961	ELSE
962	km_damp_x(i) = 0.0
963	ENDIF
964	ENDDO
965
966	ENDIF
967
968	IF ( bc_ns == 'dirichlet/radiation' ) THEN
969
970	DO j = nys-1, nyn+1
971	IF ( j >= ny - outflow_damping_width ) THEN
972	km_damp_y(j) = km_damp_max * MIN( 1.0, &
973	( j - ( ny - outflow_damping_width ) ) / &
974	REAL( outflow_damping_width/2 ) &
975	)
976	ELSE
977	km_damp_y(j) = 0.0
978	ENDIF
979	ENDDO
980
981	ELSEIF ( bc_ns == 'radiation/dirichlet' ) THEN
982
983	DO j = nys-1, nyn+1
984	IF ( j <= outflow_damping_width ) THEN
985	km_damp_y(j) = km_damp_max * MIN( 1.0, &
986	( outflow_damping_width - j ) / &
987	REAL( outflow_damping_width/2 ) &
988	)
989	ELSE
990	km_damp_y(j) = 0.0
991	ENDIF
992	ENDDO
993
994	ENDIF
995
996	!
997	!-- Initialize local summation arrays for UP flow_statistics. This is necessary
998	!-- because they may not yet have been initialized when they are called from
999	!-- flow_statistics (or - depending on the chosen model run - are never
1000	!-- initialized)
1001	sums_divnew_l = 0.0
1002	sums_divold_l = 0.0
1003	sums_l_l = 0.0
1004	sums_up_fraction_l = 0.0
1005	sums_wsts_bc_l = 0.0
1006
1007	!
1008	!-- Pre-set masks for regional statistics. Default is the total model domain.
1009	rmask = 1.0
1010
1011	!
1012	!-- User-defined initializing actions. Check afterwards, if maximum number
1013	!-- of allowed timeseries is not exceeded
1014	CALL user_init
1015
1016	IF ( dots_num > dots_max ) THEN
1017	IF ( myid == 0 ) THEN
1018	PRINT*, '+++ user_init: number of time series quantities exceeds', &
1019	' its maximum of dots_max = ', dots_max
1020	PRINT*, ' Please increase dots_max in modules.f90.'
1021	ENDIF
1022	CALL local_stop
1023	ENDIF
1024
1025	!
1026	!-- Input binary data file is not needed anymore. This line must be placed
1027	!-- after call of user_init!
1028	CALL close_file( 13 )
1029
1030	!
1031	!-- Compute total sum of active mask grid points
1032	!-- ngp_2dh: number of grid points of a horizontal cross section through the
1033	!-- total domain
1034	!-- ngp_3d: number of grid points of the total domain
1035	!-- Note: The lower vertical index nzb_s_outer imposes a small error on the 2D
1036	!-- ---- averages of staggered variables such as u and v due to the topography
1037	!-- arrangement on the staggered grid. Maybe revise later.
1038	ngp_2dh_outer_l = 0
1039	ngp_2dh_outer = 0
1040	ngp_2dh_l = 0
1041	ngp_2dh = 0
1042	ngp_3d_inner_l = 0
1043	ngp_3d_inner = 0
1044	ngp_3d = 0
1045	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
1046
1047	DO sr = 0, statistic_regions
1048	DO i = nxl, nxr
1049	DO j = nys, nyn
1050	IF ( rmask(j,i,sr) == 1.0 ) THEN
1051	!
1052	!-- All xy-grid points
1053	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
1054	!
1055	!-- xy-grid points above topography
1056	DO k = nzb_s_outer(j,i), nz + 1
1057	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
1058	ENDDO
1059	!
1060	!-- All grid points of the total domain above topography
1061	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
1062	( nz - nzb_s_inner(j,i) + 2 )
1063	ENDIF
1064	ENDDO
1065	ENDDO
1066	ENDDO
1067
1068	sr = statistic_regions + 1
1069	#if defined( __parallel )
1070	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
1071	comm2d, ierr )
1072	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
1073	MPI_INTEGER, MPI_SUM, comm2d, ierr )
1074	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner(0), sr, MPI_INTEGER, &
1075	MPI_SUM, comm2d, ierr )
1076	#else
1077	ngp_2dh = ngp_2dh_l
1078	ngp_2dh_outer = ngp_2dh_outer_l
1079	ngp_3d_inner = ngp_3d_inner_l
1080	#endif
1081
1082	ngp_3d = ngp_2dh * ( nz + 2 )
1083
1084	!
1085	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
1086	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
1087	!-- the respective subdomain lie below the surface topography
1088	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
1089	ngp_3d_inner = MAX( 1, ngp_3d_inner(:) )
1090
1091	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l )
1092
1093
1094	END SUBROUTINE init_3d_model

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