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source: palm/trunk/SOURCE/init_3d_model.f90 @ 247

Last change on this file since 247 was 241, checked in by letzel, 16 years ago
Option to predefine a target bulk velocity for conserve_volume_flow
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	!------------------------------------------------------------------------------!
	7	! Actual revisions:
	8	! -----------------
[240]	9	! Set the starting level and the vertical smoothing factor used for
	10	! the external pressure gradient
[241]	11	! +converve_volume_flow_mode: 'default', 'initial_profiles', 'inflow_profile'
	12	! and 'bulk_velocity'
[139]	13	!
	14	! Former revisions:
	15	! -----------------
	16	! $Id: init_3d_model.f90 241 2009-02-19 16:08:56Z heinze $
	17	!
[198]	18	! 181 2008-07-30 07:07:47Z raasch
	19	! bugfix: zero assignments to tendency arrays in case of restarts,
	20	! further extensions and modifications in the initialisation of the plant
	21	! canopy model,
	22	! allocation of hom_sum moved to parin, initialization of spectrum_x\|y directly
	23	! after allocating theses arrays,
	24	! read data for recycling added as new initialization option,
	25	! dummy allocation for diss
	26	!
[139]	27	! 138 2007-11-28 10:03:58Z letzel
[132]	28	! New counter ngp_2dh_s_inner.
	29	! Allow new case bc_uv_t = 'dirichlet_0' for channel flow.
	30	! Corrected calculation of initial volume flow for 'set_1d-model_profiles' and
	31	! 'set_constant_profiles' in case of buildings in the reference cross-sections.
[77]	32	!
[110]	33	! 108 2007-08-24 15:10:38Z letzel
	34	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
	35	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
	36	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
	37	! Rayleigh damping for ocean, optionally calculate km and kh from initial
	38	! TKE e_init
	39	!
[98]	40	! 97 2007-06-21 08:23:15Z raasch
	41	! Initialization of salinity, call of init_ocean
	42	!
[90]	43	! 87 2007-05-22 15:46:47Z raasch
	44	! var_hom and var_sum renamed pr_palm
	45	!
[77]	46	! 75 2007-03-22 09:54:05Z raasch
[73]	47	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
	48	! bugfix for cases with the outflow damping layer extending over more than one
[75]	49	! subdomain, moisture renamed humidity,
	50	! new initializing action "by_user" calls user_init_3d_model,
[72]	51	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
[51]	52	! initial velocities at nzb+1 are regarded for volume
	53	! flow control in case they have been set zero before (to avoid small timesteps)
[75]	54	! -uvmean_outflow, uxrp, vynp eliminated
[1]	55	!
[39]	56	! 19 2007-02-23 04:53:48Z raasch
	57	! +handling of top fluxes
	58	!
[3]	59	! RCS Log replace by Id keyword, revision history cleaned up
	60	!
[1]	61	! Revision 1.49 2006/08/22 15:59:07 raasch
	62	! No optimization of this file on the ibmy (Yonsei Univ.)
	63	!
	64	! Revision 1.1 1998/03/09 16:22:22 raasch
	65	! Initial revision
	66	!
	67	!
	68	! Description:
	69	! ------------
	70	! Allocation of arrays and initialization of the 3D model via
	71	! a) pre-run the 1D model
	72	! or
	73	! b) pre-set constant linear profiles
	74	! or
	75	! c) read values of a previous run
	76	!------------------------------------------------------------------------------!
	77
	78	USE arrays_3d
	79	USE averaging
[72]	80	USE cloud_parameters
[1]	81	USE constants
	82	USE control_parameters
	83	USE cpulog
	84	USE indices
	85	USE interfaces
	86	USE model_1d
[51]	87	USE netcdf_control
[1]	88	USE particle_attributes
	89	USE pegrid
	90	USE profil_parameter
	91	USE random_function_mod
	92	USE statistics
	93
	94	IMPLICIT NONE
	95
[240]	96	INTEGER :: i, ind_array(1), j, k, sr
[1]	97
	98	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l, ngp_3d_inner_l
	99
[132]	100	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l, &
	101	ngp_2dh_s_inner_l
[1]	102
[153]	103	REAL :: a, b
	104
[1]	105	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
	106
	107
	108	!
	109	!-- Allocate arrays
	110	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
	111	ngp_3d(0:statistic_regions), &
	112	ngp_3d_inner(0:statistic_regions), &
	113	ngp_3d_inner_l(0:statistic_regions), &
	114	sums_divnew_l(0:statistic_regions), &
	115	sums_divold_l(0:statistic_regions) )
[240]	116	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt) )
[143]	117	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
[1]	118	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
[132]	119	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
	120	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
[1]	121	rmask(nys-1:nyn+1,nxl-1:nxr+1,0:statistic_regions), &
[87]	122	sums(nzb:nzt+1,pr_palm+max_pr_user), &
	123	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
[1]	124	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
	125	sums_up_fraction_l(10,3,0:statistic_regions), &
[48]	126	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
	127	ts_value(var_ts,0:statistic_regions) )
[1]	128	ALLOCATE( km_damp_x(nxl-1:nxr+1), km_damp_y(nys-1:nyn+1) )
	129
[19]	130	ALLOCATE( rif_1(nys-1:nyn+1,nxl-1:nxr+1), shf_1(nys-1:nyn+1,nxl-1:nxr+1), &
	131	ts(nys-1:nyn+1,nxl-1:nxr+1), tswst_1(nys-1:nyn+1,nxl-1:nxr+1), &
	132	us(nys-1:nyn+1,nxl-1:nxr+1), usws_1(nys-1:nyn+1,nxl-1:nxr+1), &
[102]	133	uswst_1(nys-1:nyn+1,nxl-1:nxr+1), &
	134	vsws_1(nys-1:nyn+1,nxl-1:nxr+1), &
	135	vswst_1(nys-1:nyn+1,nxl-1:nxr+1), z0(nys-1:nyn+1,nxl-1:nxr+1) )
[1]	136
	137	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
	138	!
	139	!-- Leapfrog scheme needs two timelevels of diffusion quantities
[19]	140	ALLOCATE( rif_2(nys-1:nyn+1,nxl-1:nxr+1), &
	141	shf_2(nys-1:nyn+1,nxl-1:nxr+1), &
	142	tswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
	143	usws_2(nys-1:nyn+1,nxl-1:nxr+1), &
[102]	144	uswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
	145	vswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
[1]	146	vsws_2(nys-1:nyn+1,nxl-1:nxr+1) )
	147	ENDIF
	148
[75]	149	ALLOCATE( d(nzb+1:nzta,nys:nyna,nxl:nxra), &
	150	e_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	151	e_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	152	e_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	153	kh_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	154	km_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	155	p(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	156	pt_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	157	pt_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	158	pt_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	159	tend(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	160	u_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	161	u_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	162	u_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	163	v_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	164	v_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	165	v_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	166	w_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	167	w_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
[1]	168	w_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	169
	170	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
	171	ALLOCATE( kh_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	172	km_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	173	ENDIF
	174
[75]	175	IF ( humidity .OR. passive_scalar ) THEN
[1]	176	!
[75]	177	!-- 2D-humidity/scalar arrays
[1]	178	ALLOCATE ( qs(nys-1:nyn+1,nxl-1:nxr+1), &
[19]	179	qsws_1(nys-1:nyn+1,nxl-1:nxr+1), &
	180	qswst_1(nys-1:nyn+1,nxl-1:nxr+1) )
[1]	181
	182	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
[19]	183	ALLOCATE( qsws_2(nys-1:nyn+1,nxl-1:nxr+1), &
	184	qswst_2(nys-1:nyn+1,nxl-1:nxr+1) )
[1]	185	ENDIF
	186	!
[75]	187	!-- 3D-humidity/scalar arrays
[1]	188	ALLOCATE( q_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	189	q_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	190	q_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	191
	192	!
[75]	193	!-- 3D-arrays needed for humidity only
	194	IF ( humidity ) THEN
[1]	195	ALLOCATE( vpt_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	196
	197	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
	198	ALLOCATE( vpt_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	199	ENDIF
	200
	201	IF ( cloud_physics ) THEN
	202	!
	203	!-- Liquid water content
	204	ALLOCATE ( ql_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
[72]	205	!
	206	!-- Precipitation amount and rate (only needed if output is switched)
	207	ALLOCATE( precipitation_amount(nys-1:nyn+1,nxl-1:nxr+1), &
	208	precipitation_rate(nys-1:nyn+1,nxl-1:nxr+1) )
[1]	209	ENDIF
	210
	211	IF ( cloud_droplets ) THEN
	212	!
	213	!-- Liquid water content, change in liquid water content,
	214	!-- real volume of particles (with weighting), volume of particles
	215	ALLOCATE ( ql_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	216	ql_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	217	ql_v(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	218	ql_vp(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	219	ENDIF
	220
	221	ENDIF
	222
	223	ENDIF
	224
[94]	225	IF ( ocean ) THEN
[95]	226	ALLOCATE( saswsb_1(nys-1:nyn+1,nxl-1:nxr+1), &
	227	saswst_1(nys-1:nyn+1,nxl-1:nxr+1) )
[96]	228	ALLOCATE( rho_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	229	sa_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	230	sa_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
[94]	231	sa_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
[96]	232	rho => rho_1 ! routine calc_mean_profile requires density to be a
	233	! pointer
[108]	234	IF ( humidity_remote ) THEN
	235	ALLOCATE( qswst_remote(nys-1:nyn+1,nxl-1:nxr+1) )
	236	qswst_remote = 0.0
	237	ENDIF
[94]	238	ENDIF
	239
[1]	240	!
	241	!-- 3D-array for storing the dissipation, needed for calculating the sgs
	242	!-- particle velocities
	243	IF ( use_sgs_for_particles ) THEN
	244	ALLOCATE ( diss(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
[181]	245	ELSE
	246	ALLOCATE ( diss(2,2,2) ) ! required because diss is used as a
	247	! formal parameter
[1]	248	ENDIF
	249
	250	IF ( dt_dosp /= 9999999.9 ) THEN
	251	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
	252	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
[146]	253	spectrum_x = 0.0
	254	spectrum_y = 0.0
[1]	255	ENDIF
	256
	257	!
[138]	258	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
	259	IF ( plant_canopy ) THEN
	260	ALLOCATE ( lad_s(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	261	lad_u(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	262	lad_v(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	263	lad_w(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	264	cdc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
[153]	265
	266	IF ( passive_scalar ) THEN
	267	ALLOCATE ( sls(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	268	sec(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	269	ENDIF
	270
	271	IF ( cthf /= 0.0 ) THEN
	272	ALLOCATE ( lai(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	273	canopy_heat_flux(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	274	ENDIF
	275
[138]	276	ENDIF
	277
	278	!
[51]	279	!-- 4D-array for storing the Rif-values at vertical walls
	280	IF ( topography /= 'flat' ) THEN
	281	ALLOCATE( rif_wall(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1,1:4) )
	282	rif_wall = 0.0
	283	ENDIF
	284
	285	!
	286	!-- Velocities at nzb+1 needed for volume flow control
	287	IF ( conserve_volume_flow ) THEN
	288	ALLOCATE( u_nzb_p1_for_vfc(nys:nyn), v_nzb_p1_for_vfc(nxl:nxr) )
	289	u_nzb_p1_for_vfc = 0.0
	290	v_nzb_p1_for_vfc = 0.0
	291	ENDIF
	292
	293	!
[106]	294	!-- Arrays to store velocity data from t-dt and the phase speeds which
	295	!-- are needed for radiation boundary conditions
[73]	296	IF ( outflow_l ) THEN
[106]	297	ALLOCATE( u_m_l(nzb:nzt+1,nys-1:nyn+1,1:2), &
	298	v_m_l(nzb:nzt+1,nys-1:nyn+1,0:1), &
	299	w_m_l(nzb:nzt+1,nys-1:nyn+1,0:1) )
[73]	300	ENDIF
	301	IF ( outflow_r ) THEN
[106]	302	ALLOCATE( u_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx), &
	303	v_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx), &
	304	w_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx) )
[73]	305	ENDIF
[106]	306	IF ( outflow_l .OR. outflow_r ) THEN
	307	ALLOCATE( c_u(nzb:nzt+1,nys-1:nyn+1), c_v(nzb:nzt+1,nys-1:nyn+1), &
	308	c_w(nzb:nzt+1,nys-1:nyn+1) )
	309	ENDIF
[73]	310	IF ( outflow_s ) THEN
[106]	311	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxl-1:nxr+1), &
	312	v_m_s(nzb:nzt+1,1:2,nxl-1:nxr+1), &
	313	w_m_s(nzb:nzt+1,0:1,nxl-1:nxr+1) )
[73]	314	ENDIF
	315	IF ( outflow_n ) THEN
[106]	316	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxl-1:nxr+1), &
	317	v_m_n(nzb:nzt+1,ny-1:ny,nxl-1:nxr+1), &
	318	w_m_n(nzb:nzt+1,ny-1:ny,nxl-1:nxr+1) )
[73]	319	ENDIF
[106]	320	IF ( outflow_s .OR. outflow_n ) THEN
	321	ALLOCATE( c_u(nzb:nzt+1,nxl-1:nxr+1), c_v(nzb:nzt+1,nxl-1:nxr+1), &
	322	c_w(nzb:nzt+1,nxl-1:nxr+1) )
	323	ENDIF
[73]	324
	325	!
[1]	326	!-- Initial assignment of the pointers
	327	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
	328
[19]	329	rif_m => rif_1; rif => rif_2
	330	shf_m => shf_1; shf => shf_2
	331	tswst_m => tswst_1; tswst => tswst_2
	332	usws_m => usws_1; usws => usws_2
[102]	333	uswst_m => uswst_1; uswst => uswst_2
[19]	334	vsws_m => vsws_1; vsws => vsws_2
[102]	335	vswst_m => vswst_1; vswst => vswst_2
[1]	336	e_m => e_1; e => e_2; e_p => e_3; te_m => e_3
	337	kh_m => kh_1; kh => kh_2
	338	km_m => km_1; km => km_2
	339	pt_m => pt_1; pt => pt_2; pt_p => pt_3; tpt_m => pt_3
	340	u_m => u_1; u => u_2; u_p => u_3; tu_m => u_3
	341	v_m => v_1; v => v_2; v_p => v_3; tv_m => v_3
	342	w_m => w_1; w => w_2; w_p => w_3; tw_m => w_3
	343
[75]	344	IF ( humidity .OR. passive_scalar ) THEN
[19]	345	qsws_m => qsws_1; qsws => qsws_2
	346	qswst_m => qswst_1; qswst => qswst_2
[1]	347	q_m => q_1; q => q_2; q_p => q_3; tq_m => q_3
[75]	348	IF ( humidity ) vpt_m => vpt_1; vpt => vpt_2
[1]	349	IF ( cloud_physics ) ql => ql_1
	350	IF ( cloud_droplets ) THEN
	351	ql => ql_1
	352	ql_c => ql_2
	353	ENDIF
	354	ENDIF
	355
	356	ELSE
	357
[19]	358	rif => rif_1
	359	shf => shf_1
	360	tswst => tswst_1
	361	usws => usws_1
[102]	362	uswst => uswst_1
[19]	363	vsws => vsws_1
[102]	364	vswst => vswst_1
[19]	365	e => e_1; e_p => e_2; te_m => e_3; e_m => e_3
	366	kh => kh_1
	367	km => km_1
	368	pt => pt_1; pt_p => pt_2; tpt_m => pt_3; pt_m => pt_3
	369	u => u_1; u_p => u_2; tu_m => u_3; u_m => u_3
	370	v => v_1; v_p => v_2; tv_m => v_3; v_m => v_3
	371	w => w_1; w_p => w_2; tw_m => w_3; w_m => w_3
[1]	372
[75]	373	IF ( humidity .OR. passive_scalar ) THEN
[1]	374	qsws => qsws_1
[19]	375	qswst => qswst_1
[94]	376	q => q_1; q_p => q_2; tq_m => q_3; q_m => q_3
[75]	377	IF ( humidity ) vpt => vpt_1
[1]	378	IF ( cloud_physics ) ql => ql_1
	379	IF ( cloud_droplets ) THEN
	380	ql => ql_1
	381	ql_c => ql_2
	382	ENDIF
	383	ENDIF
	384
[94]	385	IF ( ocean ) THEN
[95]	386	saswsb => saswsb_1
[94]	387	saswst => saswst_1
	388	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
	389	ENDIF
	390
[1]	391	ENDIF
	392
	393	!
	394	!-- Initialize model variables
[147]	395	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
	396	TRIM( initializing_actions ) /= 'read_data_for_recycling' ) THEN
[1]	397	!
	398	!-- First model run of a possible job queue.
	399	!-- Initial profiles of the variables must be computes.
	400	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
	401	!
	402	!-- Use solutions of the 1D model as initial profiles,
	403	!-- start 1D model
	404	CALL init_1d_model
	405	!
	406	!-- Transfer initial profiles to the arrays of the 3D model
	407	DO i = nxl-1, nxr+1
	408	DO j = nys-1, nyn+1
	409	e(:,j,i) = e1d
	410	kh(:,j,i) = kh1d
	411	km(:,j,i) = km1d
	412	pt(:,j,i) = pt_init
	413	u(:,j,i) = u1d
	414	v(:,j,i) = v1d
	415	ENDDO
	416	ENDDO
	417
[75]	418	IF ( humidity .OR. passive_scalar ) THEN
[1]	419	DO i = nxl-1, nxr+1
	420	DO j = nys-1, nyn+1
	421	q(:,j,i) = q_init
	422	ENDDO
	423	ENDDO
	424	ENDIF
	425
	426	IF ( .NOT. constant_diffusion ) THEN
	427	DO i = nxl-1, nxr+1
	428	DO j = nys-1, nyn+1
	429	e(:,j,i) = e1d
	430	ENDDO
	431	ENDDO
	432	!
	433	!-- Store initial profiles for output purposes etc.
	434	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
	435
	436	IF ( prandtl_layer ) THEN
	437	rif = rif1d(nzb+1)
	438	ts = 0.0 ! could actually be computed more accurately in the
	439	! 1D model. Update when opportunity arises.
	440	us = us1d
	441	usws = usws1d
	442	vsws = vsws1d
	443	ELSE
	444	ts = 0.0 ! must be set, because used in
	445	rif = 0.0 ! flowste
	446	us = 0.0
	447	usws = 0.0
	448	vsws = 0.0
	449	ENDIF
	450
	451	ELSE
	452	e = 0.0 ! must be set, because used in
	453	rif = 0.0 ! flowste
	454	ts = 0.0
	455	us = 0.0
	456	usws = 0.0
	457	vsws = 0.0
	458	ENDIF
[102]	459	uswst = top_momentumflux_u
	460	vswst = top_momentumflux_v
[1]	461
	462	!
	463	!-- In every case qs = 0.0 (see also pt)
	464	!-- This could actually be computed more accurately in the 1D model.
	465	!-- Update when opportunity arises!
[75]	466	IF ( humidity .OR. passive_scalar ) qs = 0.0
[1]	467
	468	!
	469	!-- inside buildings set velocities back to zero
	470	IF ( topography /= 'flat' ) THEN
	471	DO i = nxl-1, nxr+1
	472	DO j = nys-1, nyn+1
	473	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
	474	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
	475	ENDDO
	476	ENDDO
[132]	477	IF ( conserve_volume_flow ) THEN
	478	IF ( nxr == nx ) THEN
	479	DO j = nys, nyn
	480	DO k = nzb + 1, nzb_u_inner(j,nx)
	481	u_nzb_p1_for_vfc(j) = u1d(k) * dzu(k)
	482	ENDDO
	483	ENDDO
	484	ENDIF
	485	IF ( nyn == ny ) THEN
	486	DO i = nxl, nxr
	487	DO k = nzb + 1, nzb_v_inner(ny,i)
	488	v_nzb_p1_for_vfc(i) = v1d(k) * dzu(k)
	489	ENDDO
	490	ENDDO
	491	ENDIF
	492	ENDIF
[1]	493	!
	494	!-- WARNING: The extra boundary conditions set after running the
	495	!-- ------- 1D model impose an error on the divergence one layer
	496	!-- below the topography; need to correct later
	497	!-- ATTENTION: Provisional correction for Piacsek & Williams
	498	!-- --------- advection scheme: keep u and v zero one layer below
	499	!-- the topography.
	500	IF ( ibc_uv_b == 0 ) THEN
	501	!
	502	!-- Satisfying the Dirichlet condition with an extra layer below
	503	!-- the surface where the u and v component change their sign.
	504	DO i = nxl-1, nxr+1
	505	DO j = nys-1, nyn+1
	506	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = -u(1,j,i)
	507	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = -v(1,j,i)
	508	ENDDO
	509	ENDDO
	510
	511	ELSE
	512	!
	513	!-- Neumann condition
	514	DO i = nxl-1, nxr+1
	515	DO j = nys-1, nyn+1
	516	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
	517	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
	518	ENDDO
	519	ENDDO
	520
	521	ENDIF
	522
	523	ENDIF
	524
	525	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
	526	THEN
	527	!
	528	!-- Use constructed initial profiles (velocity constant with height,
	529	!-- temperature profile with constant gradient)
	530	DO i = nxl-1, nxr+1
	531	DO j = nys-1, nyn+1
	532	pt(:,j,i) = pt_init
	533	u(:,j,i) = u_init
	534	v(:,j,i) = v_init
	535	ENDDO
	536	ENDDO
[75]	537
[1]	538	!
[51]	539	!-- Set initial horizontal velocities at the lowest computational grid levels
	540	!-- to zero in order to avoid too small time steps caused by the diffusion
[1]	541	!-- limit in the initial phase of a run (at k=1, dz/2 occurs in the
[51]	542	!-- limiting formula!). The original values are stored to be later used for
	543	!-- volume flow control.
[1]	544	DO i = nxl-1, nxr+1
	545	DO j = nys-1, nyn+1
	546	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
	547	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
	548	ENDDO
	549	ENDDO
[51]	550	IF ( conserve_volume_flow ) THEN
	551	IF ( nxr == nx ) THEN
	552	DO j = nys, nyn
[132]	553	DO k = nzb + 1, nzb_u_inner(j,nx) + 1
	554	u_nzb_p1_for_vfc(j) = u_init(k) * dzu(k)
	555	ENDDO
[51]	556	ENDDO
	557	ENDIF
	558	IF ( nyn == ny ) THEN
	559	DO i = nxl, nxr
[132]	560	DO k = nzb + 1, nzb_v_inner(ny,i) + 1
	561	v_nzb_p1_for_vfc(i) = v_init(k) * dzu(k)
	562	ENDDO
[51]	563	ENDDO
	564	ENDIF
	565	ENDIF
[1]	566
[75]	567	IF ( humidity .OR. passive_scalar ) THEN
[1]	568	DO i = nxl-1, nxr+1
	569	DO j = nys-1, nyn+1
	570	q(:,j,i) = q_init
	571	ENDDO
	572	ENDDO
	573	ENDIF
	574
[94]	575	IF ( ocean ) THEN
	576	DO i = nxl-1, nxr+1
	577	DO j = nys-1, nyn+1
	578	sa(:,j,i) = sa_init
	579	ENDDO
	580	ENDDO
	581	ENDIF
[1]	582
	583	IF ( constant_diffusion ) THEN
	584	km = km_constant
	585	kh = km / prandtl_number
[108]	586	e = 0.0
	587	ELSEIF ( e_init > 0.0 ) THEN
	588	DO k = nzb+1, nzt
	589	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
	590	ENDDO
	591	km(nzb,:,:) = km(nzb+1,:,:)
	592	km(nzt+1,:,:) = km(nzt,:,:)
	593	kh = km / prandtl_number
	594	e = e_init
[1]	595	ELSE
[108]	596	IF ( .NOT. ocean ) THEN
	597	kh = 0.01 ! there must exist an initial diffusion, because
	598	km = 0.01 ! otherwise no TKE would be produced by the
	599	! production terms, as long as not yet
	600	! e = (u/cm)*2 at k=nzb+1
	601	ELSE
	602	kh = 0.00001
	603	km = 0.00001
	604	ENDIF
	605	e = 0.0
[1]	606	ENDIF
[102]	607	rif = 0.0
	608	ts = 0.0
	609	us = 0.0
	610	usws = 0.0
	611	uswst = top_momentumflux_u
	612	vsws = 0.0
	613	vswst = top_momentumflux_v
[75]	614	IF ( humidity .OR. passive_scalar ) qs = 0.0
[1]	615
	616	!
	617	!-- Compute initial temperature field and other constants used in case
	618	!-- of a sloping surface
	619	IF ( sloping_surface ) CALL init_slope
	620
[46]	621	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
	622	THEN
	623	!
	624	!-- Initialization will completely be done by the user
	625	CALL user_init_3d_model
	626
[1]	627	ENDIF
	628
	629	!
[151]	630	!-- Apply channel flow boundary condition
[132]	631	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
	632
	633	u(nzt+1,:,:) = 0.0
	634	v(nzt+1,:,:) = 0.0
	635
[151]	636	!-- For the Dirichlet condition to be correctly applied at the top, set
[132]	637	!-- ug and vg to zero there
	638	ug(nzt+1) = 0.0
	639	vg(nzt+1) = 0.0
	640
	641	ENDIF
	642
	643	!
[1]	644	!-- Calculate virtual potential temperature
[75]	645	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
[1]	646
	647	!
	648	!-- Store initial profiles for output purposes etc.
	649	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
	650	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
	651	IF ( ibc_uv_b == 0 ) THEN
	652	hom(nzb,1,5,:) = -hom(nzb+1,1,5,:) ! due to satisfying the Dirichlet
	653	hom(nzb,1,6,:) = -hom(nzb+1,1,6,:) ! condition with an extra layer
	654	! below the surface where the u and v component change their sign
	655	ENDIF
	656	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
	657	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
	658	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
	659
[97]	660	IF ( ocean ) THEN
	661	!
	662	!-- Store initial salinity profile
	663	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
	664	ENDIF
[1]	665
[75]	666	IF ( humidity ) THEN
[1]	667	!
	668	!-- Store initial profile of total water content, virtual potential
	669	!-- temperature
	670	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
	671	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
	672	IF ( cloud_physics .OR. cloud_droplets ) THEN
	673	!
	674	!-- Store initial profile of specific humidity and potential
	675	!-- temperature
	676	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
	677	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
	678	ENDIF
	679	ENDIF
	680
	681	IF ( passive_scalar ) THEN
	682	!
	683	!-- Store initial scalar profile
	684	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
	685	ENDIF
	686
	687	!
[19]	688	!-- Initialize fluxes at bottom surface
[1]	689	IF ( use_surface_fluxes ) THEN
	690
	691	IF ( constant_heatflux ) THEN
	692	!
	693	!-- Heat flux is prescribed
	694	IF ( random_heatflux ) THEN
	695	CALL disturb_heatflux
	696	ELSE
	697	shf = surface_heatflux
	698	!
	699	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
	700	IF ( TRIM( topography ) /= 'flat' ) THEN
	701	DO i = nxl-1, nxr+1
	702	DO j = nys-1, nyn+1
	703	IF ( nzb_s_inner(j,i) /= 0 ) THEN
	704	shf(j,i) = wall_heatflux(0)
	705	ENDIF
	706	ENDDO
	707	ENDDO
	708	ENDIF
	709	ENDIF
	710	IF ( ASSOCIATED( shf_m ) ) shf_m = shf
	711	ENDIF
	712
	713	!
	714	!-- Determine the near-surface water flux
[75]	715	IF ( humidity .OR. passive_scalar ) THEN
[1]	716	IF ( constant_waterflux ) THEN
	717	qsws = surface_waterflux
	718	IF ( ASSOCIATED( qsws_m ) ) qsws_m = qsws
	719	ENDIF
	720	ENDIF
	721
	722	ENDIF
	723
	724	!
[19]	725	!-- Initialize fluxes at top surface
[94]	726	!-- Currently, only the heatflux and salinity flux can be prescribed.
	727	!-- The latent flux is zero in this case!
[19]	728	IF ( use_top_fluxes ) THEN
	729
	730	IF ( constant_top_heatflux ) THEN
	731	!
	732	!-- Heat flux is prescribed
	733	tswst = top_heatflux
	734	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
	735
[75]	736	IF ( humidity .OR. passive_scalar ) THEN
[19]	737	qswst = 0.0
	738	IF ( ASSOCIATED( qswst_m ) ) qswst_m = qswst
	739	ENDIF
[94]	740
	741	IF ( ocean ) THEN
[95]	742	saswsb = bottom_salinityflux
[94]	743	saswst = top_salinityflux
	744	ENDIF
[102]	745	ENDIF
[19]	746
[102]	747	!
	748	!-- Initialization in case of a coupled model run
	749	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
	750	tswst = 0.0
	751	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
	752	ENDIF
	753
[19]	754	ENDIF
	755
	756	!
[1]	757	!-- Initialize Prandtl layer quantities
	758	IF ( prandtl_layer ) THEN
	759
	760	z0 = roughness_length
	761
	762	IF ( .NOT. constant_heatflux ) THEN
	763	!
	764	!-- Surface temperature is prescribed. Here the heat flux cannot be
	765	!-- simply estimated, because therefore rif, u* and theta* would have
	766	!-- to be computed by iteration. This is why the heat flux is assumed
	767	!-- to be zero before the first time step. It approaches its correct
	768	!-- value in the course of the first few time steps.
	769	shf = 0.0
	770	IF ( ASSOCIATED( shf_m ) ) shf_m = 0.0
	771	ENDIF
	772
[75]	773	IF ( humidity .OR. passive_scalar ) THEN
[1]	774	IF ( .NOT. constant_waterflux ) THEN
	775	qsws = 0.0
	776	IF ( ASSOCIATED( qsws_m ) ) qsws_m = 0.0
	777	ENDIF
	778	ENDIF
	779
	780	ENDIF
	781
	782	!
[152]	783	!-- Calculate the initial volume flow at the right and north boundary
	784	IF ( conserve_volume_flow ) THEN
	785
	786	volume_flow_initial_l = 0.0
	787	volume_flow_area_l = 0.0
	788
	789	IF ( nxr == nx ) THEN
	790	DO j = nys, nyn
	791	DO k = nzb_2d(j,nx) + 1, nzt
	792	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	793	u(k,j,nx) * dzu(k)
	794	volume_flow_area_l(1) = volume_flow_area_l(1) + dzu(k)
	795	ENDDO
	796	!
	797	!-- Correction if velocity at nzb+1 has been set zero further above
	798	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	799	u_nzb_p1_for_vfc(j)
	800	ENDDO
	801	ENDIF
	802
	803	IF ( nyn == ny ) THEN
	804	DO i = nxl, nxr
	805	DO k = nzb_2d(ny,i) + 1, nzt
	806	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	807	v(k,ny,i) * dzu(k)
	808	volume_flow_area_l(2) = volume_flow_area_l(2) + dzu(k)
	809	ENDDO
	810	!
	811	!-- Correction if velocity at nzb+1 has been set zero further above
	812	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	813	v_nzb_p1_for_vfc(i)
	814	ENDDO
	815	ENDIF
	816
	817	#if defined( __parallel )
	818	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
	819	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	820	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
	821	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	822	#else
	823	volume_flow_initial = volume_flow_initial_l
	824	volume_flow_area = volume_flow_area_l
[241]	825	#endif
	826	!
	827	!-- In case of 'bulk_velocity' mode, volume_flow_initial is overridden
	828	!-- and calculated from u\|v_bulk instead.
	829	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
	830	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
	831	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
	832	ENDIF
	833
[152]	834	ENDIF
	835
	836	!
[1]	837	!-- For the moment, perturbation pressure and vertical velocity are zero
	838	p = 0.0; w = 0.0
	839
	840	!
	841	!-- Initialize array sums (must be defined in first call of pres)
	842	sums = 0.0
	843
	844	!
[72]	845	!-- Treating cloud physics, liquid water content and precipitation amount
	846	!-- are zero at beginning of the simulation
	847	IF ( cloud_physics ) THEN
	848	ql = 0.0
	849	IF ( precipitation ) precipitation_amount = 0.0
	850	ENDIF
[1]	851
	852	!
	853	!-- Impose vortex with vertical axis on the initial velocity profile
	854	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
	855	CALL init_rankine
	856	ENDIF
	857
	858	!
	859	!-- Impose temperature anomaly (advection test only)
	860	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
	861	CALL init_pt_anomaly
	862	ENDIF
	863
	864	!
	865	!-- If required, change the surface temperature at the start of the 3D run
	866	IF ( pt_surface_initial_change /= 0.0 ) THEN
	867	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
	868	ENDIF
	869
	870	!
	871	!-- If required, change the surface humidity/scalar at the start of the 3D
	872	!-- run
[75]	873	IF ( ( humidity .OR. passive_scalar ) .AND. &
[1]	874	q_surface_initial_change /= 0.0 ) THEN
	875	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
	876	ENDIF
	877
	878	!
	879	!-- Initialize the random number generator (from numerical recipes)
	880	CALL random_function_ini
	881
	882	!
	883	!-- Impose random perturbation on the horizontal velocity field and then
	884	!-- remove the divergences from the velocity field
	885	IF ( create_disturbances ) THEN
[75]	886	CALL disturb_field( nzb_u_inner, tend, u )
	887	CALL disturb_field( nzb_v_inner, tend, v )
[1]	888	n_sor = nsor_ini
	889	CALL pres
	890	n_sor = nsor
	891	ENDIF
	892
	893	!
	894	!-- Once again set the perturbation pressure explicitly to zero in order to
	895	!-- assure that it does not generate any divergences in the first time step.
	896	!-- At t=0 the velocity field is free of divergence (as constructed above).
	897	!-- Divergences being created during a time step are not yet known and thus
	898	!-- cannot be corrected during the time step yet.
	899	p = 0.0
	900
	901	!
	902	!-- Initialize old and new time levels.
	903	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
	904	e_m = e; pt_m = pt; u_m = u; v_m = v; w_m = w; kh_m = kh; km_m = km
	905	ELSE
	906	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
	907	ENDIF
	908	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
	909
[75]	910	IF ( humidity .OR. passive_scalar ) THEN
[1]	911	IF ( ASSOCIATED( q_m ) ) q_m = q
	912	IF ( timestep_scheme(1:5) == 'runge' ) tq_m = 0.0
	913	q_p = q
[75]	914	IF ( humidity .AND. ASSOCIATED( vpt_m ) ) vpt_m = vpt
[1]	915	ENDIF
	916
[94]	917	IF ( ocean ) THEN
	918	tsa_m = 0.0
	919	sa_p = sa
	920	ENDIF
	921
[73]	922
[147]	923	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
	924	TRIM( initializing_actions ) == 'read_data_for_recycling' ) &
[1]	925	THEN
	926	!
[147]	927	!-- When reading data for initializing the recycling method, first read
	928	!-- some of the global variables from restart file
	929	IF ( TRIM( initializing_actions ) == 'read_data_for_recycling' ) THEN
[151]	930
[147]	931	WRITE (9,*) 'before read_parts_of_var_list'
	932	CALL local_flush( 9 )
	933	CALL read_parts_of_var_list
	934	WRITE (9,*) 'after read_parts_of_var_list'
	935	CALL local_flush( 9 )
	936	CALL close_file( 13 )
[151]	937	!
	938	!-- Store temporally and horizontally averaged vertical profiles to be
	939	!-- used as mean inflow profiles
	940	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
	941
	942	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
	943	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
	944	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
	945	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
	946
	947	!
	948	!-- Use these mean profiles for the inflow (provided that Dirichlet
	949	!-- conditions are used)
	950	IF ( inflow_l ) THEN
	951	DO j = nys-1, nyn+1
	952	DO k = nzb, nzt+1
	953	u(k,j,-1) = mean_inflow_profiles(k,1)
	954	v(k,j,-1) = mean_inflow_profiles(k,2)
	955	w(k,j,-1) = 0.0
	956	pt(k,j,-1) = mean_inflow_profiles(k,4)
	957	e(k,j,-1) = mean_inflow_profiles(k,5)
	958	ENDDO
	959	ENDDO
	960	ENDIF
	961
	962	!
	963	!-- Calculate the damping factors to be used at the inflow. For a
	964	!-- turbulent inflow the turbulent fluctuations have to be limited
	965	!-- vertically because otherwise the turbulent inflow layer will grow
	966	!-- in time.
	967	IF ( inflow_damping_height == 9999999.9 ) THEN
	968	!
	969	!-- Default: use the inversion height calculated by the prerun
	970	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
	971
	972	ENDIF
	973
	974	IF ( inflow_damping_width == 9999999.9 ) THEN
	975	!
	976	!-- Default for the transition range: one tenth of the undamped layer
	977	inflow_damping_width = 0.1 * inflow_damping_height
	978
	979	ENDIF
	980
	981	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
	982
	983	DO k = nzb, nzt+1
	984
	985	IF ( zu(k) <= inflow_damping_height ) THEN
	986	inflow_damping_factor(k) = 1.0
	987	ELSEIF ( zu(k) <= inflow_damping_height + inflow_damping_width ) &
	988	THEN
	989	inflow_damping_factor(k) = 1.0 - &
	990	( zu(k) - inflow_damping_height ) / &
	991	inflow_damping_width
	992	ELSE
	993	inflow_damping_factor(k) = 0.0
	994	ENDIF
	995
	996	ENDDO
	997
[147]	998	ENDIF
	999
[152]	1000	!
[163]	1001	!-- Read binary data from restart file
	1002	WRITE (9,*) 'before read_3d_binary'
	1003	CALL local_flush( 9 )
	1004	CALL read_3d_binary
	1005	WRITE (9,*) 'after read_3d_binary'
	1006	CALL local_flush( 9 )
	1007
	1008	!
[152]	1009	!-- Calculate the initial volume flow at the right and north boundary
[163]	1010	IF ( conserve_volume_flow .AND. &
	1011	TRIM( initializing_actions ) == 'read_data_for_recycling' ) THEN
[151]	1012
[152]	1013	volume_flow_initial_l = 0.0
	1014	volume_flow_area_l = 0.0
	1015
	1016	IF ( nxr == nx ) THEN
	1017	DO j = nys, nyn
	1018	DO k = nzb_2d(j,nx) + 1, nzt
	1019	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	1020	u(k,j,nx) * dzu(k)
	1021	volume_flow_area_l(1) = volume_flow_area_l(1) + dzu(k)
	1022	ENDDO
[147]	1023	!
[152]	1024	!-- Correction if velocity at nzb+1 has been set zero further above
	1025	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	1026	u_nzb_p1_for_vfc(j)
	1027	ENDDO
	1028	ENDIF
	1029
	1030	IF ( nyn == ny ) THEN
	1031	DO i = nxl, nxr
	1032	DO k = nzb_2d(ny,i) + 1, nzt
	1033	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	1034	v(k,ny,i) * dzu(k)
	1035	volume_flow_area_l(2) = volume_flow_area_l(2) + dzu(k)
	1036	ENDDO
	1037	!
	1038	!-- Correction if velocity at nzb+1 has been set zero further above
	1039	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	1040	v_nzb_p1_for_vfc(i)
	1041	ENDDO
	1042	ENDIF
	1043
	1044	#if defined( __parallel )
	1045	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
	1046	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	1047	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
	1048	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	1049	#else
	1050	volume_flow_initial = volume_flow_initial_l
	1051	volume_flow_area = volume_flow_area_l
	1052	#endif
	1053	ENDIF
	1054
	1055
	1056	!
[1]	1057	!-- Calculate initial temperature field and other constants used in case
	1058	!-- of a sloping surface
	1059	IF ( sloping_surface ) CALL init_slope
	1060
	1061	!
	1062	!-- Initialize new time levels (only done in order to set boundary values
	1063	!-- including ghost points)
	1064	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
[75]	1065	IF ( humidity .OR. passive_scalar ) q_p = q
[94]	1066	IF ( ocean ) sa_p = sa
[1]	1067
[181]	1068	!
	1069	!-- Allthough tendency arrays are set in prognostic_equations, they have
	1070	!-- have to be predefined here because they are used (but multiplied with 0)
	1071	!-- there before they are set.
	1072	IF ( timestep_scheme(1:5) == 'runge' ) THEN
	1073	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
	1074	IF ( humidity .OR. passive_scalar ) tq_m = 0.0
	1075	IF ( ocean ) tsa_m = 0.0
	1076	ENDIF
	1077
[1]	1078	ELSE
	1079	!
	1080	!-- Actually this part of the programm should not be reached
	1081	IF ( myid == 0 ) PRINT*,'+++ init_3d_model: unknown initializing ', &
	1082	'problem'
	1083	CALL local_stop
	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
	1380	IF ( myid == 0 ) THEN
	1381	PRINT*, '+++ user_init: number of time series quantities exceeds', &
	1382	' its maximum of dots_max = ', dots_max
	1383	PRINT*, ' Please increase dots_max in modules.f90.'
	1384	ENDIF
	1385	CALL local_stop
	1386	ENDIF
	1387
[1]	1388	!
	1389	!-- Input binary data file is not needed anymore. This line must be placed
	1390	!-- after call of user_init!
	1391	CALL close_file( 13 )
	1392
	1393	!
	1394	!-- Compute total sum of active mask grid points
	1395	!-- ngp_2dh: number of grid points of a horizontal cross section through the
	1396	!-- total domain
	1397	!-- ngp_3d: number of grid points of the total domain
[132]	1398	ngp_2dh_outer_l = 0
	1399	ngp_2dh_outer = 0
	1400	ngp_2dh_s_inner_l = 0
	1401	ngp_2dh_s_inner = 0
	1402	ngp_2dh_l = 0
	1403	ngp_2dh = 0
	1404	ngp_3d_inner_l = 0
	1405	ngp_3d_inner = 0
	1406	ngp_3d = 0
	1407	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
[1]	1408
	1409	DO sr = 0, statistic_regions
	1410	DO i = nxl, nxr
	1411	DO j = nys, nyn
	1412	IF ( rmask(j,i,sr) == 1.0 ) THEN
	1413	!
	1414	!-- All xy-grid points
	1415	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
	1416	!
	1417	!-- xy-grid points above topography
	1418	DO k = nzb_s_outer(j,i), nz + 1
	1419	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
	1420	ENDDO
[132]	1421	DO k = nzb_s_inner(j,i), nz + 1
	1422	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
	1423	ENDDO
[1]	1424	!
	1425	!-- All grid points of the total domain above topography
	1426	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
	1427	( nz - nzb_s_inner(j,i) + 2 )
	1428	ENDIF
	1429	ENDDO
	1430	ENDDO
	1431	ENDDO
	1432
	1433	sr = statistic_regions + 1
	1434	#if defined( __parallel )
	1435	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
	1436	comm2d, ierr )
	1437	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
	1438	MPI_INTEGER, MPI_SUM, comm2d, ierr )
[132]	1439	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
	1440	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
[1]	1441	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner(0), sr, MPI_INTEGER, &
	1442	MPI_SUM, comm2d, ierr )
	1443	#else
[132]	1444	ngp_2dh = ngp_2dh_l
	1445	ngp_2dh_outer = ngp_2dh_outer_l
	1446	ngp_2dh_s_inner = ngp_2dh_s_inner_l
	1447	ngp_3d_inner = ngp_3d_inner_l
[1]	1448	#endif
	1449
	1450	ngp_3d = ngp_2dh * ( nz + 2 )
	1451
	1452	!
	1453	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
	1454	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
	1455	!-- the respective subdomain lie below the surface topography
	1456	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
	1457	ngp_3d_inner = MAX( 1, ngp_3d_inner(:) )
	1458
	1459	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l )
	1460
	1461
	1462	END SUBROUTINE init_3d_model

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