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source: palm/trunk/SOURCE/init_3d_model.f90 @ 274

Last change on this file since 274 was 274, checked in by heinze, 16 years ago
Indentation of the message calls corrected
Property svn:keywords set to `Id`
File size: 50.6 KB

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

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