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source: palm/trunk/SOURCE/init_3d_model.f90 @ 236

Last change on this file since 236 was 198, checked in by raasch, 16 years ago
file headers updated for the next release 3.5
Property svn:keywords set to `Id`
File size: 49.1 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	! -----------------
[198]	9	!
[139]	10	!
	11	! Former revisions:
	12	! -----------------
	13	! $Id: init_3d_model.f90 198 2008-09-17 08:55:28Z letzel $
	14	!
[198]	15	! 181 2008-07-30 07:07:47Z raasch
	16	! bugfix: zero assignments to tendency arrays in case of restarts,
	17	! further extensions and modifications in the initialisation of the plant
	18	! canopy model,
	19	! allocation of hom_sum moved to parin, initialization of spectrum_x\|y directly
	20	! after allocating theses arrays,
	21	! read data for recycling added as new initialization option,
	22	! dummy allocation for diss
	23	!
[139]	24	! 138 2007-11-28 10:03:58Z letzel
[132]	25	! New counter ngp_2dh_s_inner.
	26	! Allow new case bc_uv_t = 'dirichlet_0' for channel flow.
	27	! Corrected calculation of initial volume flow for 'set_1d-model_profiles' and
	28	! 'set_constant_profiles' in case of buildings in the reference cross-sections.
[77]	29	!
[110]	30	! 108 2007-08-24 15:10:38Z letzel
	31	! Flux initialization in case of coupled runs, +momentum fluxes at top boundary,
	32	! +arrays for phase speed c_u, c_v, c_w, indices for u\|v\|w_m_l\|r changed
	33	! +qswst_remote in case of atmosphere model with humidity coupled to ocean
	34	! Rayleigh damping for ocean, optionally calculate km and kh from initial
	35	! TKE e_init
	36	!
[98]	37	! 97 2007-06-21 08:23:15Z raasch
	38	! Initialization of salinity, call of init_ocean
	39	!
[90]	40	! 87 2007-05-22 15:46:47Z raasch
	41	! var_hom and var_sum renamed pr_palm
	42	!
[77]	43	! 75 2007-03-22 09:54:05Z raasch
[73]	44	! Arrays for radiation boundary conditions are allocated (u_m_l, u_m_r, etc.),
	45	! bugfix for cases with the outflow damping layer extending over more than one
[75]	46	! subdomain, moisture renamed humidity,
	47	! new initializing action "by_user" calls user_init_3d_model,
[72]	48	! precipitation_amount/rate, ts_value are allocated, +module netcdf_control,
[51]	49	! initial velocities at nzb+1 are regarded for volume
	50	! flow control in case they have been set zero before (to avoid small timesteps)
[75]	51	! -uvmean_outflow, uxrp, vynp eliminated
[1]	52	!
[39]	53	! 19 2007-02-23 04:53:48Z raasch
	54	! +handling of top fluxes
	55	!
[3]	56	! RCS Log replace by Id keyword, revision history cleaned up
	57	!
[1]	58	! Revision 1.49 2006/08/22 15:59:07 raasch
	59	! No optimization of this file on the ibmy (Yonsei Univ.)
	60	!
	61	! Revision 1.1 1998/03/09 16:22:22 raasch
	62	! Initial revision
	63	!
	64	!
	65	! Description:
	66	! ------------
	67	! Allocation of arrays and initialization of the 3D model via
	68	! a) pre-run the 1D model
	69	! or
	70	! b) pre-set constant linear profiles
	71	! or
	72	! c) read values of a previous run
	73	!------------------------------------------------------------------------------!
	74
	75	USE arrays_3d
	76	USE averaging
[72]	77	USE cloud_parameters
[1]	78	USE constants
	79	USE control_parameters
	80	USE cpulog
	81	USE indices
	82	USE interfaces
	83	USE model_1d
[51]	84	USE netcdf_control
[1]	85	USE particle_attributes
	86	USE pegrid
	87	USE profil_parameter
	88	USE random_function_mod
	89	USE statistics
	90
	91	IMPLICIT NONE
	92
	93	INTEGER :: i, j, k, sr
	94
	95	INTEGER, DIMENSION(:), ALLOCATABLE :: ngp_2dh_l, ngp_3d_inner_l
	96
[132]	97	INTEGER, DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l, &
	98	ngp_2dh_s_inner_l
[1]	99
[153]	100	REAL :: a, b
	101
[1]	102	REAL, DIMENSION(1:2) :: volume_flow_area_l, volume_flow_initial_l
	103
	104
	105	!
	106	!-- Allocate arrays
	107	ALLOCATE( ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
	108	ngp_3d(0:statistic_regions), &
	109	ngp_3d_inner(0:statistic_regions), &
	110	ngp_3d_inner_l(0:statistic_regions), &
	111	sums_divnew_l(0:statistic_regions), &
	112	sums_divold_l(0:statistic_regions) )
[75]	113	ALLOCATE( rdf(nzb+1:nzt) )
[143]	114	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
[1]	115	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
[132]	116	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
	117	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
[1]	118	rmask(nys-1:nyn+1,nxl-1:nxr+1,0:statistic_regions), &
[87]	119	sums(nzb:nzt+1,pr_palm+max_pr_user), &
	120	sums_l(nzb:nzt+1,pr_palm+max_pr_user,0:threads_per_task-1), &
[1]	121	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
	122	sums_up_fraction_l(10,3,0:statistic_regions), &
[48]	123	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions), &
	124	ts_value(var_ts,0:statistic_regions) )
[1]	125	ALLOCATE( km_damp_x(nxl-1:nxr+1), km_damp_y(nys-1:nyn+1) )
	126
[19]	127	ALLOCATE( rif_1(nys-1:nyn+1,nxl-1:nxr+1), shf_1(nys-1:nyn+1,nxl-1:nxr+1), &
	128	ts(nys-1:nyn+1,nxl-1:nxr+1), tswst_1(nys-1:nyn+1,nxl-1:nxr+1), &
	129	us(nys-1:nyn+1,nxl-1:nxr+1), usws_1(nys-1:nyn+1,nxl-1:nxr+1), &
[102]	130	uswst_1(nys-1:nyn+1,nxl-1:nxr+1), &
	131	vsws_1(nys-1:nyn+1,nxl-1:nxr+1), &
	132	vswst_1(nys-1:nyn+1,nxl-1:nxr+1), z0(nys-1:nyn+1,nxl-1:nxr+1) )
[1]	133
	134	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
	135	!
	136	!-- Leapfrog scheme needs two timelevels of diffusion quantities
[19]	137	ALLOCATE( rif_2(nys-1:nyn+1,nxl-1:nxr+1), &
	138	shf_2(nys-1:nyn+1,nxl-1:nxr+1), &
	139	tswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
	140	usws_2(nys-1:nyn+1,nxl-1:nxr+1), &
[102]	141	uswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
	142	vswst_2(nys-1:nyn+1,nxl-1:nxr+1), &
[1]	143	vsws_2(nys-1:nyn+1,nxl-1:nxr+1) )
	144	ENDIF
	145
[75]	146	ALLOCATE( d(nzb+1:nzta,nys:nyna,nxl:nxra), &
	147	e_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	148	e_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	149	e_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	150	kh_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	151	km_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	152	p(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	153	pt_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	154	pt_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	155	pt_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	156	tend(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	157	u_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	158	u_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	159	u_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	160	v_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	161	v_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	162	v_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	163	w_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	164	w_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
[1]	165	w_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	166
	167	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
	168	ALLOCATE( kh_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	169	km_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	170	ENDIF
	171
[75]	172	IF ( humidity .OR. passive_scalar ) THEN
[1]	173	!
[75]	174	!-- 2D-humidity/scalar arrays
[1]	175	ALLOCATE ( qs(nys-1:nyn+1,nxl-1:nxr+1), &
[19]	176	qsws_1(nys-1:nyn+1,nxl-1:nxr+1), &
	177	qswst_1(nys-1:nyn+1,nxl-1:nxr+1) )
[1]	178
	179	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
[19]	180	ALLOCATE( qsws_2(nys-1:nyn+1,nxl-1:nxr+1), &
	181	qswst_2(nys-1:nyn+1,nxl-1:nxr+1) )
[1]	182	ENDIF
	183	!
[75]	184	!-- 3D-humidity/scalar arrays
[1]	185	ALLOCATE( q_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	186	q_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	187	q_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	188
	189	!
[75]	190	!-- 3D-arrays needed for humidity only
	191	IF ( humidity ) THEN
[1]	192	ALLOCATE( vpt_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	193
	194	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
	195	ALLOCATE( vpt_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	196	ENDIF
	197
	198	IF ( cloud_physics ) THEN
	199	!
	200	!-- Liquid water content
	201	ALLOCATE ( ql_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
[72]	202	!
	203	!-- Precipitation amount and rate (only needed if output is switched)
	204	ALLOCATE( precipitation_amount(nys-1:nyn+1,nxl-1:nxr+1), &
	205	precipitation_rate(nys-1:nyn+1,nxl-1:nxr+1) )
[1]	206	ENDIF
	207
	208	IF ( cloud_droplets ) THEN
	209	!
	210	!-- Liquid water content, change in liquid water content,
	211	!-- real volume of particles (with weighting), volume of particles
	212	ALLOCATE ( ql_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	213	ql_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	214	ql_v(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	215	ql_vp(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	216	ENDIF
	217
	218	ENDIF
	219
	220	ENDIF
	221
[94]	222	IF ( ocean ) THEN
[95]	223	ALLOCATE( saswsb_1(nys-1:nyn+1,nxl-1:nxr+1), &
	224	saswst_1(nys-1:nyn+1,nxl-1:nxr+1) )
[96]	225	ALLOCATE( rho_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	226	sa_1(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	227	sa_2(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
[94]	228	sa_3(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
[96]	229	rho => rho_1 ! routine calc_mean_profile requires density to be a
	230	! pointer
[108]	231	IF ( humidity_remote ) THEN
	232	ALLOCATE( qswst_remote(nys-1:nyn+1,nxl-1:nxr+1) )
	233	qswst_remote = 0.0
	234	ENDIF
[94]	235	ENDIF
	236
[1]	237	!
	238	!-- 3D-array for storing the dissipation, needed for calculating the sgs
	239	!-- particle velocities
	240	IF ( use_sgs_for_particles ) THEN
	241	ALLOCATE ( diss(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
[181]	242	ELSE
	243	ALLOCATE ( diss(2,2,2) ) ! required because diss is used as a
	244	! formal parameter
[1]	245	ENDIF
	246
	247	IF ( dt_dosp /= 9999999.9 ) THEN
	248	ALLOCATE( spectrum_x( 1:nx/2, 1:10, 1:10 ), &
	249	spectrum_y( 1:ny/2, 1:10, 1:10 ) )
[146]	250	spectrum_x = 0.0
	251	spectrum_y = 0.0
[1]	252	ENDIF
	253
	254	!
[138]	255	!-- 3D-arrays for the leaf area density and the canopy drag coefficient
	256	IF ( plant_canopy ) THEN
	257	ALLOCATE ( lad_s(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	258	lad_u(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	259	lad_v(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	260	lad_w(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	261	cdc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
[153]	262
	263	IF ( passive_scalar ) THEN
	264	ALLOCATE ( sls(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	265	sec(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	266	ENDIF
	267
	268	IF ( cthf /= 0.0 ) THEN
	269	ALLOCATE ( lai(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1), &
	270	canopy_heat_flux(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
	271	ENDIF
	272
[138]	273	ENDIF
	274
	275	!
[51]	276	!-- 4D-array for storing the Rif-values at vertical walls
	277	IF ( topography /= 'flat' ) THEN
	278	ALLOCATE( rif_wall(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1,1:4) )
	279	rif_wall = 0.0
	280	ENDIF
	281
	282	!
	283	!-- Velocities at nzb+1 needed for volume flow control
	284	IF ( conserve_volume_flow ) THEN
	285	ALLOCATE( u_nzb_p1_for_vfc(nys:nyn), v_nzb_p1_for_vfc(nxl:nxr) )
	286	u_nzb_p1_for_vfc = 0.0
	287	v_nzb_p1_for_vfc = 0.0
	288	ENDIF
	289
	290	!
[106]	291	!-- Arrays to store velocity data from t-dt and the phase speeds which
	292	!-- are needed for radiation boundary conditions
[73]	293	IF ( outflow_l ) THEN
[106]	294	ALLOCATE( u_m_l(nzb:nzt+1,nys-1:nyn+1,1:2), &
	295	v_m_l(nzb:nzt+1,nys-1:nyn+1,0:1), &
	296	w_m_l(nzb:nzt+1,nys-1:nyn+1,0:1) )
[73]	297	ENDIF
	298	IF ( outflow_r ) THEN
[106]	299	ALLOCATE( u_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx), &
	300	v_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx), &
	301	w_m_r(nzb:nzt+1,nys-1:nyn+1,nx-1:nx) )
[73]	302	ENDIF
[106]	303	IF ( outflow_l .OR. outflow_r ) THEN
	304	ALLOCATE( c_u(nzb:nzt+1,nys-1:nyn+1), c_v(nzb:nzt+1,nys-1:nyn+1), &
	305	c_w(nzb:nzt+1,nys-1:nyn+1) )
	306	ENDIF
[73]	307	IF ( outflow_s ) THEN
[106]	308	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxl-1:nxr+1), &
	309	v_m_s(nzb:nzt+1,1:2,nxl-1:nxr+1), &
	310	w_m_s(nzb:nzt+1,0:1,nxl-1:nxr+1) )
[73]	311	ENDIF
	312	IF ( outflow_n ) THEN
[106]	313	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxl-1:nxr+1), &
	314	v_m_n(nzb:nzt+1,ny-1:ny,nxl-1:nxr+1), &
	315	w_m_n(nzb:nzt+1,ny-1:ny,nxl-1:nxr+1) )
[73]	316	ENDIF
[106]	317	IF ( outflow_s .OR. outflow_n ) THEN
	318	ALLOCATE( c_u(nzb:nzt+1,nxl-1:nxr+1), c_v(nzb:nzt+1,nxl-1:nxr+1), &
	319	c_w(nzb:nzt+1,nxl-1:nxr+1) )
	320	ENDIF
[73]	321
	322	!
[1]	323	!-- Initial assignment of the pointers
	324	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
	325
[19]	326	rif_m => rif_1; rif => rif_2
	327	shf_m => shf_1; shf => shf_2
	328	tswst_m => tswst_1; tswst => tswst_2
	329	usws_m => usws_1; usws => usws_2
[102]	330	uswst_m => uswst_1; uswst => uswst_2
[19]	331	vsws_m => vsws_1; vsws => vsws_2
[102]	332	vswst_m => vswst_1; vswst => vswst_2
[1]	333	e_m => e_1; e => e_2; e_p => e_3; te_m => e_3
	334	kh_m => kh_1; kh => kh_2
	335	km_m => km_1; km => km_2
	336	pt_m => pt_1; pt => pt_2; pt_p => pt_3; tpt_m => pt_3
	337	u_m => u_1; u => u_2; u_p => u_3; tu_m => u_3
	338	v_m => v_1; v => v_2; v_p => v_3; tv_m => v_3
	339	w_m => w_1; w => w_2; w_p => w_3; tw_m => w_3
	340
[75]	341	IF ( humidity .OR. passive_scalar ) THEN
[19]	342	qsws_m => qsws_1; qsws => qsws_2
	343	qswst_m => qswst_1; qswst => qswst_2
[1]	344	q_m => q_1; q => q_2; q_p => q_3; tq_m => q_3
[75]	345	IF ( humidity ) vpt_m => vpt_1; vpt => vpt_2
[1]	346	IF ( cloud_physics ) ql => ql_1
	347	IF ( cloud_droplets ) THEN
	348	ql => ql_1
	349	ql_c => ql_2
	350	ENDIF
	351	ENDIF
	352
	353	ELSE
	354
[19]	355	rif => rif_1
	356	shf => shf_1
	357	tswst => tswst_1
	358	usws => usws_1
[102]	359	uswst => uswst_1
[19]	360	vsws => vsws_1
[102]	361	vswst => vswst_1
[19]	362	e => e_1; e_p => e_2; te_m => e_3; e_m => e_3
	363	kh => kh_1
	364	km => km_1
	365	pt => pt_1; pt_p => pt_2; tpt_m => pt_3; pt_m => pt_3
	366	u => u_1; u_p => u_2; tu_m => u_3; u_m => u_3
	367	v => v_1; v_p => v_2; tv_m => v_3; v_m => v_3
	368	w => w_1; w_p => w_2; tw_m => w_3; w_m => w_3
[1]	369
[75]	370	IF ( humidity .OR. passive_scalar ) THEN
[1]	371	qsws => qsws_1
[19]	372	qswst => qswst_1
[94]	373	q => q_1; q_p => q_2; tq_m => q_3; q_m => q_3
[75]	374	IF ( humidity ) vpt => vpt_1
[1]	375	IF ( cloud_physics ) ql => ql_1
	376	IF ( cloud_droplets ) THEN
	377	ql => ql_1
	378	ql_c => ql_2
	379	ENDIF
	380	ENDIF
	381
[94]	382	IF ( ocean ) THEN
[95]	383	saswsb => saswsb_1
[94]	384	saswst => saswst_1
	385	sa => sa_1; sa_p => sa_2; tsa_m => sa_3
	386	ENDIF
	387
[1]	388	ENDIF
	389
	390	!
	391	!-- Initialize model variables
[147]	392	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
	393	TRIM( initializing_actions ) /= 'read_data_for_recycling' ) THEN
[1]	394	!
	395	!-- First model run of a possible job queue.
	396	!-- Initial profiles of the variables must be computes.
	397	IF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
	398	!
	399	!-- Use solutions of the 1D model as initial profiles,
	400	!-- start 1D model
	401	CALL init_1d_model
	402	!
	403	!-- Transfer initial profiles to the arrays of the 3D model
	404	DO i = nxl-1, nxr+1
	405	DO j = nys-1, nyn+1
	406	e(:,j,i) = e1d
	407	kh(:,j,i) = kh1d
	408	km(:,j,i) = km1d
	409	pt(:,j,i) = pt_init
	410	u(:,j,i) = u1d
	411	v(:,j,i) = v1d
	412	ENDDO
	413	ENDDO
	414
[75]	415	IF ( humidity .OR. passive_scalar ) THEN
[1]	416	DO i = nxl-1, nxr+1
	417	DO j = nys-1, nyn+1
	418	q(:,j,i) = q_init
	419	ENDDO
	420	ENDDO
	421	ENDIF
	422
	423	IF ( .NOT. constant_diffusion ) THEN
	424	DO i = nxl-1, nxr+1
	425	DO j = nys-1, nyn+1
	426	e(:,j,i) = e1d
	427	ENDDO
	428	ENDDO
	429	!
	430	!-- Store initial profiles for output purposes etc.
	431	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
	432
	433	IF ( prandtl_layer ) THEN
	434	rif = rif1d(nzb+1)
	435	ts = 0.0 ! could actually be computed more accurately in the
	436	! 1D model. Update when opportunity arises.
	437	us = us1d
	438	usws = usws1d
	439	vsws = vsws1d
	440	ELSE
	441	ts = 0.0 ! must be set, because used in
	442	rif = 0.0 ! flowste
	443	us = 0.0
	444	usws = 0.0
	445	vsws = 0.0
	446	ENDIF
	447
	448	ELSE
	449	e = 0.0 ! must be set, because used in
	450	rif = 0.0 ! flowste
	451	ts = 0.0
	452	us = 0.0
	453	usws = 0.0
	454	vsws = 0.0
	455	ENDIF
[102]	456	uswst = top_momentumflux_u
	457	vswst = top_momentumflux_v
[1]	458
	459	!
	460	!-- In every case qs = 0.0 (see also pt)
	461	!-- This could actually be computed more accurately in the 1D model.
	462	!-- Update when opportunity arises!
[75]	463	IF ( humidity .OR. passive_scalar ) qs = 0.0
[1]	464
	465	!
	466	!-- inside buildings set velocities back to zero
	467	IF ( topography /= 'flat' ) THEN
	468	DO i = nxl-1, nxr+1
	469	DO j = nys-1, nyn+1
	470	u(nzb:nzb_u_inner(j,i),j,i) = 0.0
	471	v(nzb:nzb_v_inner(j,i),j,i) = 0.0
	472	ENDDO
	473	ENDDO
[132]	474	IF ( conserve_volume_flow ) THEN
	475	IF ( nxr == nx ) THEN
	476	DO j = nys, nyn
	477	DO k = nzb + 1, nzb_u_inner(j,nx)
	478	u_nzb_p1_for_vfc(j) = u1d(k) * dzu(k)
	479	ENDDO
	480	ENDDO
	481	ENDIF
	482	IF ( nyn == ny ) THEN
	483	DO i = nxl, nxr
	484	DO k = nzb + 1, nzb_v_inner(ny,i)
	485	v_nzb_p1_for_vfc(i) = v1d(k) * dzu(k)
	486	ENDDO
	487	ENDDO
	488	ENDIF
	489	ENDIF
[1]	490	!
	491	!-- WARNING: The extra boundary conditions set after running the
	492	!-- ------- 1D model impose an error on the divergence one layer
	493	!-- below the topography; need to correct later
	494	!-- ATTENTION: Provisional correction for Piacsek & Williams
	495	!-- --------- advection scheme: keep u and v zero one layer below
	496	!-- the topography.
	497	IF ( ibc_uv_b == 0 ) THEN
	498	!
	499	!-- Satisfying the Dirichlet condition with an extra layer below
	500	!-- the surface where the u and v component change their sign.
	501	DO i = nxl-1, nxr+1
	502	DO j = nys-1, nyn+1
	503	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = -u(1,j,i)
	504	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = -v(1,j,i)
	505	ENDDO
	506	ENDDO
	507
	508	ELSE
	509	!
	510	!-- Neumann condition
	511	DO i = nxl-1, nxr+1
	512	DO j = nys-1, nyn+1
	513	IF ( nzb_u_inner(j,i) == 0 ) u(0,j,i) = u(1,j,i)
	514	IF ( nzb_v_inner(j,i) == 0 ) v(0,j,i) = v(1,j,i)
	515	ENDDO
	516	ENDDO
	517
	518	ENDIF
	519
	520	ENDIF
	521
	522	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
	523	THEN
	524	!
	525	!-- Use constructed initial profiles (velocity constant with height,
	526	!-- temperature profile with constant gradient)
	527	DO i = nxl-1, nxr+1
	528	DO j = nys-1, nyn+1
	529	pt(:,j,i) = pt_init
	530	u(:,j,i) = u_init
	531	v(:,j,i) = v_init
	532	ENDDO
	533	ENDDO
[75]	534
[1]	535	!
[51]	536	!-- Set initial horizontal velocities at the lowest computational grid levels
	537	!-- to zero in order to avoid too small time steps caused by the diffusion
[1]	538	!-- limit in the initial phase of a run (at k=1, dz/2 occurs in the
[51]	539	!-- limiting formula!). The original values are stored to be later used for
	540	!-- volume flow control.
[1]	541	DO i = nxl-1, nxr+1
	542	DO j = nys-1, nyn+1
	543	u(nzb:nzb_u_inner(j,i)+1,j,i) = 0.0
	544	v(nzb:nzb_v_inner(j,i)+1,j,i) = 0.0
	545	ENDDO
	546	ENDDO
[51]	547	IF ( conserve_volume_flow ) THEN
	548	IF ( nxr == nx ) THEN
	549	DO j = nys, nyn
[132]	550	DO k = nzb + 1, nzb_u_inner(j,nx) + 1
	551	u_nzb_p1_for_vfc(j) = u_init(k) * dzu(k)
	552	ENDDO
[51]	553	ENDDO
	554	ENDIF
	555	IF ( nyn == ny ) THEN
	556	DO i = nxl, nxr
[132]	557	DO k = nzb + 1, nzb_v_inner(ny,i) + 1
	558	v_nzb_p1_for_vfc(i) = v_init(k) * dzu(k)
	559	ENDDO
[51]	560	ENDDO
	561	ENDIF
	562	ENDIF
[1]	563
[75]	564	IF ( humidity .OR. passive_scalar ) THEN
[1]	565	DO i = nxl-1, nxr+1
	566	DO j = nys-1, nyn+1
	567	q(:,j,i) = q_init
	568	ENDDO
	569	ENDDO
	570	ENDIF
	571
[94]	572	IF ( ocean ) THEN
	573	DO i = nxl-1, nxr+1
	574	DO j = nys-1, nyn+1
	575	sa(:,j,i) = sa_init
	576	ENDDO
	577	ENDDO
	578	ENDIF
[1]	579
	580	IF ( constant_diffusion ) THEN
	581	km = km_constant
	582	kh = km / prandtl_number
[108]	583	e = 0.0
	584	ELSEIF ( e_init > 0.0 ) THEN
	585	DO k = nzb+1, nzt
	586	km(k,:,:) = 0.1 * l_grid(k) * SQRT( e_init )
	587	ENDDO
	588	km(nzb,:,:) = km(nzb+1,:,:)
	589	km(nzt+1,:,:) = km(nzt,:,:)
	590	kh = km / prandtl_number
	591	e = e_init
[1]	592	ELSE
[108]	593	IF ( .NOT. ocean ) THEN
	594	kh = 0.01 ! there must exist an initial diffusion, because
	595	km = 0.01 ! otherwise no TKE would be produced by the
	596	! production terms, as long as not yet
	597	! e = (u/cm)*2 at k=nzb+1
	598	ELSE
	599	kh = 0.00001
	600	km = 0.00001
	601	ENDIF
	602	e = 0.0
[1]	603	ENDIF
[102]	604	rif = 0.0
	605	ts = 0.0
	606	us = 0.0
	607	usws = 0.0
	608	uswst = top_momentumflux_u
	609	vsws = 0.0
	610	vswst = top_momentumflux_v
[75]	611	IF ( humidity .OR. passive_scalar ) qs = 0.0
[1]	612
	613	!
	614	!-- Compute initial temperature field and other constants used in case
	615	!-- of a sloping surface
	616	IF ( sloping_surface ) CALL init_slope
	617
[46]	618	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
	619	THEN
	620	!
	621	!-- Initialization will completely be done by the user
	622	CALL user_init_3d_model
	623
[1]	624	ENDIF
	625
	626	!
[151]	627	!-- Apply channel flow boundary condition
[132]	628	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
	629
	630	u(nzt+1,:,:) = 0.0
	631	v(nzt+1,:,:) = 0.0
	632
[151]	633	!-- For the Dirichlet condition to be correctly applied at the top, set
[132]	634	!-- ug and vg to zero there
	635	ug(nzt+1) = 0.0
	636	vg(nzt+1) = 0.0
	637
	638	ENDIF
	639
	640	!
[1]	641	!-- Calculate virtual potential temperature
[75]	642	IF ( humidity ) vpt = pt * ( 1.0 + 0.61 * q )
[1]	643
	644	!
	645	!-- Store initial profiles for output purposes etc.
	646	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
	647	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
	648	IF ( ibc_uv_b == 0 ) THEN
	649	hom(nzb,1,5,:) = -hom(nzb+1,1,5,:) ! due to satisfying the Dirichlet
	650	hom(nzb,1,6,:) = -hom(nzb+1,1,6,:) ! condition with an extra layer
	651	! below the surface where the u and v component change their sign
	652	ENDIF
	653	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
	654	hom(:,1,23,:) = SPREAD( km(:,nys,nxl), 2, statistic_regions+1 )
	655	hom(:,1,24,:) = SPREAD( kh(:,nys,nxl), 2, statistic_regions+1 )
	656
[97]	657	IF ( ocean ) THEN
	658	!
	659	!-- Store initial salinity profile
	660	hom(:,1,26,:) = SPREAD( sa(:,nys,nxl), 2, statistic_regions+1 )
	661	ENDIF
[1]	662
[75]	663	IF ( humidity ) THEN
[1]	664	!
	665	!-- Store initial profile of total water content, virtual potential
	666	!-- temperature
	667	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
	668	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
	669	IF ( cloud_physics .OR. cloud_droplets ) THEN
	670	!
	671	!-- Store initial profile of specific humidity and potential
	672	!-- temperature
	673	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
	674	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
	675	ENDIF
	676	ENDIF
	677
	678	IF ( passive_scalar ) THEN
	679	!
	680	!-- Store initial scalar profile
	681	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
	682	ENDIF
	683
	684	!
[19]	685	!-- Initialize fluxes at bottom surface
[1]	686	IF ( use_surface_fluxes ) THEN
	687
	688	IF ( constant_heatflux ) THEN
	689	!
	690	!-- Heat flux is prescribed
	691	IF ( random_heatflux ) THEN
	692	CALL disturb_heatflux
	693	ELSE
	694	shf = surface_heatflux
	695	!
	696	!-- Over topography surface_heatflux is replaced by wall_heatflux(0)
	697	IF ( TRIM( topography ) /= 'flat' ) THEN
	698	DO i = nxl-1, nxr+1
	699	DO j = nys-1, nyn+1
	700	IF ( nzb_s_inner(j,i) /= 0 ) THEN
	701	shf(j,i) = wall_heatflux(0)
	702	ENDIF
	703	ENDDO
	704	ENDDO
	705	ENDIF
	706	ENDIF
	707	IF ( ASSOCIATED( shf_m ) ) shf_m = shf
	708	ENDIF
	709
	710	!
	711	!-- Determine the near-surface water flux
[75]	712	IF ( humidity .OR. passive_scalar ) THEN
[1]	713	IF ( constant_waterflux ) THEN
	714	qsws = surface_waterflux
	715	IF ( ASSOCIATED( qsws_m ) ) qsws_m = qsws
	716	ENDIF
	717	ENDIF
	718
	719	ENDIF
	720
	721	!
[19]	722	!-- Initialize fluxes at top surface
[94]	723	!-- Currently, only the heatflux and salinity flux can be prescribed.
	724	!-- The latent flux is zero in this case!
[19]	725	IF ( use_top_fluxes ) THEN
	726
	727	IF ( constant_top_heatflux ) THEN
	728	!
	729	!-- Heat flux is prescribed
	730	tswst = top_heatflux
	731	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
	732
[75]	733	IF ( humidity .OR. passive_scalar ) THEN
[19]	734	qswst = 0.0
	735	IF ( ASSOCIATED( qswst_m ) ) qswst_m = qswst
	736	ENDIF
[94]	737
	738	IF ( ocean ) THEN
[95]	739	saswsb = bottom_salinityflux
[94]	740	saswst = top_salinityflux
	741	ENDIF
[102]	742	ENDIF
[19]	743
[102]	744	!
	745	!-- Initialization in case of a coupled model run
	746	IF ( coupling_mode == 'ocean_to_atmosphere' ) THEN
	747	tswst = 0.0
	748	IF ( ASSOCIATED( tswst_m ) ) tswst_m = tswst
	749	ENDIF
	750
[19]	751	ENDIF
	752
	753	!
[1]	754	!-- Initialize Prandtl layer quantities
	755	IF ( prandtl_layer ) THEN
	756
	757	z0 = roughness_length
	758
	759	IF ( .NOT. constant_heatflux ) THEN
	760	!
	761	!-- Surface temperature is prescribed. Here the heat flux cannot be
	762	!-- simply estimated, because therefore rif, u* and theta* would have
	763	!-- to be computed by iteration. This is why the heat flux is assumed
	764	!-- to be zero before the first time step. It approaches its correct
	765	!-- value in the course of the first few time steps.
	766	shf = 0.0
	767	IF ( ASSOCIATED( shf_m ) ) shf_m = 0.0
	768	ENDIF
	769
[75]	770	IF ( humidity .OR. passive_scalar ) THEN
[1]	771	IF ( .NOT. constant_waterflux ) THEN
	772	qsws = 0.0
	773	IF ( ASSOCIATED( qsws_m ) ) qsws_m = 0.0
	774	ENDIF
	775	ENDIF
	776
	777	ENDIF
	778
	779	!
[152]	780	!-- Calculate the initial volume flow at the right and north boundary
	781	IF ( conserve_volume_flow ) THEN
	782
	783	volume_flow_initial_l = 0.0
	784	volume_flow_area_l = 0.0
	785
	786	IF ( nxr == nx ) THEN
	787	DO j = nys, nyn
	788	DO k = nzb_2d(j,nx) + 1, nzt
	789	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	790	u(k,j,nx) * dzu(k)
	791	volume_flow_area_l(1) = volume_flow_area_l(1) + dzu(k)
	792	ENDDO
	793	!
	794	!-- Correction if velocity at nzb+1 has been set zero further above
	795	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	796	u_nzb_p1_for_vfc(j)
	797	ENDDO
	798	ENDIF
	799
	800	IF ( nyn == ny ) THEN
	801	DO i = nxl, nxr
	802	DO k = nzb_2d(ny,i) + 1, nzt
	803	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	804	v(k,ny,i) * dzu(k)
	805	volume_flow_area_l(2) = volume_flow_area_l(2) + dzu(k)
	806	ENDDO
	807	!
	808	!-- Correction if velocity at nzb+1 has been set zero further above
	809	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	810	v_nzb_p1_for_vfc(i)
	811	ENDDO
	812	ENDIF
	813
	814	#if defined( __parallel )
	815	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
	816	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	817	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
	818	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	819	#else
	820	volume_flow_initial = volume_flow_initial_l
	821	volume_flow_area = volume_flow_area_l
	822	#endif
	823	ENDIF
	824
	825	!
[1]	826	!-- For the moment, perturbation pressure and vertical velocity are zero
	827	p = 0.0; w = 0.0
	828
	829	!
	830	!-- Initialize array sums (must be defined in first call of pres)
	831	sums = 0.0
	832
	833	!
[72]	834	!-- Treating cloud physics, liquid water content and precipitation amount
	835	!-- are zero at beginning of the simulation
	836	IF ( cloud_physics ) THEN
	837	ql = 0.0
	838	IF ( precipitation ) precipitation_amount = 0.0
	839	ENDIF
[1]	840
	841	!
	842	!-- Impose vortex with vertical axis on the initial velocity profile
	843	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
	844	CALL init_rankine
	845	ENDIF
	846
	847	!
	848	!-- Impose temperature anomaly (advection test only)
	849	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN
	850	CALL init_pt_anomaly
	851	ENDIF
	852
	853	!
	854	!-- If required, change the surface temperature at the start of the 3D run
	855	IF ( pt_surface_initial_change /= 0.0 ) THEN
	856	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
	857	ENDIF
	858
	859	!
	860	!-- If required, change the surface humidity/scalar at the start of the 3D
	861	!-- run
[75]	862	IF ( ( humidity .OR. passive_scalar ) .AND. &
[1]	863	q_surface_initial_change /= 0.0 ) THEN
	864	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
	865	ENDIF
	866
	867	!
	868	!-- Initialize the random number generator (from numerical recipes)
	869	CALL random_function_ini
	870
	871	!
	872	!-- Impose random perturbation on the horizontal velocity field and then
	873	!-- remove the divergences from the velocity field
	874	IF ( create_disturbances ) THEN
[75]	875	CALL disturb_field( nzb_u_inner, tend, u )
	876	CALL disturb_field( nzb_v_inner, tend, v )
[1]	877	n_sor = nsor_ini
	878	CALL pres
	879	n_sor = nsor
	880	ENDIF
	881
	882	!
	883	!-- Once again set the perturbation pressure explicitly to zero in order to
	884	!-- assure that it does not generate any divergences in the first time step.
	885	!-- At t=0 the velocity field is free of divergence (as constructed above).
	886	!-- Divergences being created during a time step are not yet known and thus
	887	!-- cannot be corrected during the time step yet.
	888	p = 0.0
	889
	890	!
	891	!-- Initialize old and new time levels.
	892	IF ( timestep_scheme(1:5) /= 'runge' ) THEN
	893	e_m = e; pt_m = pt; u_m = u; v_m = v; w_m = w; kh_m = kh; km_m = km
	894	ELSE
	895	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
	896	ENDIF
	897	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
	898
[75]	899	IF ( humidity .OR. passive_scalar ) THEN
[1]	900	IF ( ASSOCIATED( q_m ) ) q_m = q
	901	IF ( timestep_scheme(1:5) == 'runge' ) tq_m = 0.0
	902	q_p = q
[75]	903	IF ( humidity .AND. ASSOCIATED( vpt_m ) ) vpt_m = vpt
[1]	904	ENDIF
	905
[94]	906	IF ( ocean ) THEN
	907	tsa_m = 0.0
	908	sa_p = sa
	909	ENDIF
	910
[73]	911
[147]	912	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
	913	TRIM( initializing_actions ) == 'read_data_for_recycling' ) &
[1]	914	THEN
	915	!
[147]	916	!-- When reading data for initializing the recycling method, first read
	917	!-- some of the global variables from restart file
	918	IF ( TRIM( initializing_actions ) == 'read_data_for_recycling' ) THEN
[151]	919
[147]	920	WRITE (9,*) 'before read_parts_of_var_list'
	921	CALL local_flush( 9 )
	922	CALL read_parts_of_var_list
	923	WRITE (9,*) 'after read_parts_of_var_list'
	924	CALL local_flush( 9 )
	925	CALL close_file( 13 )
[151]	926	!
	927	!-- Store temporally and horizontally averaged vertical profiles to be
	928	!-- used as mean inflow profiles
	929	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,5) )
	930
	931	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
	932	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
	933	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
	934	mean_inflow_profiles(:,5) = hom_sum(:,8,0) ! e
	935
	936	!
	937	!-- Use these mean profiles for the inflow (provided that Dirichlet
	938	!-- conditions are used)
	939	IF ( inflow_l ) THEN
	940	DO j = nys-1, nyn+1
	941	DO k = nzb, nzt+1
	942	u(k,j,-1) = mean_inflow_profiles(k,1)
	943	v(k,j,-1) = mean_inflow_profiles(k,2)
	944	w(k,j,-1) = 0.0
	945	pt(k,j,-1) = mean_inflow_profiles(k,4)
	946	e(k,j,-1) = mean_inflow_profiles(k,5)
	947	ENDDO
	948	ENDDO
	949	ENDIF
	950
	951	!
	952	!-- Calculate the damping factors to be used at the inflow. For a
	953	!-- turbulent inflow the turbulent fluctuations have to be limited
	954	!-- vertically because otherwise the turbulent inflow layer will grow
	955	!-- in time.
	956	IF ( inflow_damping_height == 9999999.9 ) THEN
	957	!
	958	!-- Default: use the inversion height calculated by the prerun
	959	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
	960
	961	ENDIF
	962
	963	IF ( inflow_damping_width == 9999999.9 ) THEN
	964	!
	965	!-- Default for the transition range: one tenth of the undamped layer
	966	inflow_damping_width = 0.1 * inflow_damping_height
	967
	968	ENDIF
	969
	970	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
	971
	972	DO k = nzb, nzt+1
	973
	974	IF ( zu(k) <= inflow_damping_height ) THEN
	975	inflow_damping_factor(k) = 1.0
	976	ELSEIF ( zu(k) <= inflow_damping_height + inflow_damping_width ) &
	977	THEN
	978	inflow_damping_factor(k) = 1.0 - &
	979	( zu(k) - inflow_damping_height ) / &
	980	inflow_damping_width
	981	ELSE
	982	inflow_damping_factor(k) = 0.0
	983	ENDIF
	984
	985	ENDDO
	986
[147]	987	ENDIF
	988
[152]	989	!
[163]	990	!-- Read binary data from restart file
	991	WRITE (9,*) 'before read_3d_binary'
	992	CALL local_flush( 9 )
	993	CALL read_3d_binary
	994	WRITE (9,*) 'after read_3d_binary'
	995	CALL local_flush( 9 )
	996
	997	!
[152]	998	!-- Calculate the initial volume flow at the right and north boundary
[163]	999	IF ( conserve_volume_flow .AND. &
	1000	TRIM( initializing_actions ) == 'read_data_for_recycling' ) THEN
[151]	1001
[152]	1002	volume_flow_initial_l = 0.0
	1003	volume_flow_area_l = 0.0
	1004
	1005	IF ( nxr == nx ) THEN
	1006	DO j = nys, nyn
	1007	DO k = nzb_2d(j,nx) + 1, nzt
	1008	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	1009	u(k,j,nx) * dzu(k)
	1010	volume_flow_area_l(1) = volume_flow_area_l(1) + dzu(k)
	1011	ENDDO
[147]	1012	!
[152]	1013	!-- Correction if velocity at nzb+1 has been set zero further above
	1014	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	1015	u_nzb_p1_for_vfc(j)
	1016	ENDDO
	1017	ENDIF
	1018
	1019	IF ( nyn == ny ) THEN
	1020	DO i = nxl, nxr
	1021	DO k = nzb_2d(ny,i) + 1, nzt
	1022	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	1023	v(k,ny,i) * dzu(k)
	1024	volume_flow_area_l(2) = volume_flow_area_l(2) + dzu(k)
	1025	ENDDO
	1026	!
	1027	!-- Correction if velocity at nzb+1 has been set zero further above
	1028	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	1029	v_nzb_p1_for_vfc(i)
	1030	ENDDO
	1031	ENDIF
	1032
	1033	#if defined( __parallel )
	1034	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
	1035	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	1036	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
	1037	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	1038	#else
	1039	volume_flow_initial = volume_flow_initial_l
	1040	volume_flow_area = volume_flow_area_l
	1041	#endif
	1042	ENDIF
	1043
	1044
	1045	!
[1]	1046	!-- Calculate initial temperature field and other constants used in case
	1047	!-- of a sloping surface
	1048	IF ( sloping_surface ) CALL init_slope
	1049
	1050	!
	1051	!-- Initialize new time levels (only done in order to set boundary values
	1052	!-- including ghost points)
	1053	e_p = e; pt_p = pt; u_p = u; v_p = v; w_p = w
[75]	1054	IF ( humidity .OR. passive_scalar ) q_p = q
[94]	1055	IF ( ocean ) sa_p = sa
[1]	1056
[181]	1057	!
	1058	!-- Allthough tendency arrays are set in prognostic_equations, they have
	1059	!-- have to be predefined here because they are used (but multiplied with 0)
	1060	!-- there before they are set.
	1061	IF ( timestep_scheme(1:5) == 'runge' ) THEN
	1062	te_m = 0.0; tpt_m = 0.0; tu_m = 0.0; tv_m = 0.0; tw_m = 0.0
	1063	IF ( humidity .OR. passive_scalar ) tq_m = 0.0
	1064	IF ( ocean ) tsa_m = 0.0
	1065	ENDIF
	1066
[1]	1067	ELSE
	1068	!
	1069	!-- Actually this part of the programm should not be reached
	1070	IF ( myid == 0 ) PRINT*,'+++ init_3d_model: unknown initializing ', &
	1071	'problem'
	1072	CALL local_stop
	1073	ENDIF
	1074
[151]	1075
	1076	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
[1]	1077	!
[151]	1078	!-- Initialize old timelevels needed for radiation boundary conditions
	1079	IF ( outflow_l ) THEN
	1080	u_m_l(:,:,:) = u(:,:,1:2)
	1081	v_m_l(:,:,:) = v(:,:,0:1)
	1082	w_m_l(:,:,:) = w(:,:,0:1)
	1083	ENDIF
	1084	IF ( outflow_r ) THEN
	1085	u_m_r(:,:,:) = u(:,:,nx-1:nx)
	1086	v_m_r(:,:,:) = v(:,:,nx-1:nx)
	1087	w_m_r(:,:,:) = w(:,:,nx-1:nx)
	1088	ENDIF
	1089	IF ( outflow_s ) THEN
	1090	u_m_s(:,:,:) = u(:,0:1,:)
	1091	v_m_s(:,:,:) = v(:,1:2,:)
	1092	w_m_s(:,:,:) = w(:,0:1,:)
	1093	ENDIF
	1094	IF ( outflow_n ) THEN
	1095	u_m_n(:,:,:) = u(:,ny-1:ny,:)
	1096	v_m_n(:,:,:) = v(:,ny-1:ny,:)
	1097	w_m_n(:,:,:) = w(:,ny-1:ny,:)
	1098	ENDIF
	1099
	1100	ENDIF
	1101
	1102	!
[138]	1103	!-- Initialization of the leaf area density
	1104	IF ( plant_canopy ) THEN
	1105
	1106	SELECT CASE ( TRIM( canopy_mode ) )
	1107
	1108	CASE( 'block' )
	1109
	1110	DO i = nxl-1, nxr+1
	1111	DO j = nys-1, nyn+1
	1112	lad_s(:,j,i) = lad(:)
	1113	cdc(:,j,i) = drag_coefficient
[153]	1114	IF ( passive_scalar ) THEN
	1115	sls(:,j,i) = leaf_surface_concentration
	1116	sec(:,j,i) = scalar_exchange_coefficient
	1117	ENDIF
[138]	1118	ENDDO
	1119	ENDDO
	1120
	1121	CASE DEFAULT
	1122
	1123	!
	1124	!-- The DEFAULT case is reached either if the parameter
	1125	!-- canopy mode contains a wrong character string or if the
	1126	!-- user has coded a special case in the user interface.
	1127	!-- There, the subroutine user_init_plant_canopy checks
	1128	!-- which of these two conditions applies.
	1129	CALL user_init_plant_canopy
	1130
	1131	END SELECT
	1132
	1133	CALL exchange_horiz( lad_s )
	1134	CALL exchange_horiz( cdc )
	1135
[153]	1136	IF ( passive_scalar ) THEN
	1137	CALL exchange_horiz( sls )
	1138	CALL exchange_horiz( sec )
	1139	ENDIF
	1140
	1141	!
	1142	!-- Sharp boundaries of the plant canopy in horizontal directions
	1143	!-- In vertical direction the interpolation is retained, as the leaf
	1144	!-- area density is initialised by prescribing a vertical profile
	1145	!-- consisting of piecewise linear segments. The upper boundary
	1146	!-- of the plant canopy is now defined by lad_w(pch_index,:,:) = 0.0.
	1147
[138]	1148	DO i = nxl, nxr
	1149	DO j = nys, nyn
	1150	DO k = nzb, nzt+1
[153]	1151	IF ( lad_s(k,j,i) > 0.0 ) THEN
	1152	lad_u(k,j,i) = lad_s(k,j,i)
	1153	lad_u(k,j,i+1) = lad_s(k,j,i)
	1154	lad_v(k,j,i) = lad_s(k,j,i)
	1155	lad_v(k,j+1,i) = lad_s(k,j,i)
	1156	ENDIF
[138]	1157	ENDDO
	1158	DO k = nzb, nzt
	1159	lad_w(k,j,i) = 0.5 * ( lad_s(k+1,j,i) + lad_s(k,j,i) )
	1160	ENDDO
	1161	ENDDO
	1162	ENDDO
	1163
[153]	1164	lad_w(pch_index,:,:) = 0.0
	1165	lad_w(nzt+1,:,:) = lad_w(nzt,:,:)
[138]	1166
	1167	CALL exchange_horiz( lad_u )
	1168	CALL exchange_horiz( lad_v )
	1169	CALL exchange_horiz( lad_w )
[153]	1170
	1171	!
	1172	!-- Initialisation of the canopy heat source distribution
	1173	IF ( cthf /= 0.0 ) THEN
	1174	!
	1175	!-- Piecewise evaluation of the leaf area index by
	1176	!-- integration of the leaf area density
	1177	lai(:,:,:) = 0.0
	1178	DO i = nxl-1, nxr+1
	1179	DO j = nys-1, nyn+1
	1180	DO k = pch_index-1, 0, -1
	1181	lai(k,j,i) = lai(k+1,j,i) + &
	1182	( 0.5 * ( lad_w(k+1,j,i) + &
	1183	lad_s(k+1,j,i) ) * &
	1184	( zw(k+1) - zu(k+1) ) ) + &
	1185	( 0.5 * ( lad_w(k,j,i) + &
	1186	lad_s(k+1,j,i) ) * &
	1187	( zu(k+1) - zw(k) ) )
	1188	ENDDO
	1189	ENDDO
	1190	ENDDO
	1191
	1192	!
	1193	!-- Evaluation of the upward kinematic vertical heat flux within the
	1194	!-- canopy
	1195	DO i = nxl-1, nxr+1
	1196	DO j = nys-1, nyn+1
	1197	DO k = 0, pch_index
	1198	canopy_heat_flux(k,j,i) = cthf * &
	1199	exp( -0.6 * lai(k,j,i) )
	1200	ENDDO
	1201	ENDDO
	1202	ENDDO
	1203
	1204	!
	1205	!-- The near surface heat flux is derived from the heat flux
	1206	!-- distribution within the canopy
	1207	shf(:,:) = canopy_heat_flux(0,:,:)
	1208
	1209	IF ( ASSOCIATED( shf_m ) ) shf_m = shf
	1210
	1211	ENDIF
	1212
[138]	1213	ENDIF
	1214
	1215	!
[1]	1216	!-- If required, initialize dvrp-software
	1217	IF ( dt_dvrp /= 9999999.9 ) CALL init_dvrp
	1218
[96]	1219	IF ( ocean ) THEN
[1]	1220	!
[96]	1221	!-- Initialize quantities needed for the ocean model
	1222	CALL init_ocean
	1223	ELSE
	1224	!
	1225	!-- Initialize quantities for handling cloud physics
	1226	!-- This routine must be called before init_particles, because
	1227	!-- otherwise, array pt_d_t, needed in data_output_dvrp (called by
	1228	!-- init_particles) is not defined.
	1229	CALL init_cloud_physics
	1230	ENDIF
[1]	1231
	1232	!
	1233	!-- If required, initialize particles
[63]	1234	IF ( particle_advection ) CALL init_particles
[1]	1235
	1236	!
	1237	!-- Initialize quantities for special advections schemes
	1238	CALL init_advec
	1239
	1240	!
	1241	!-- Initialize Rayleigh damping factors
	1242	rdf = 0.0
	1243	IF ( rayleigh_damping_factor /= 0.0 ) THEN
[108]	1244	IF ( .NOT. ocean ) THEN
	1245	DO k = nzb+1, nzt
	1246	IF ( zu(k) >= rayleigh_damping_height ) THEN
	1247	rdf(k) = rayleigh_damping_factor * &
[1]	1248	( SIN( pi * 0.5 * ( zu(k) - rayleigh_damping_height ) &
	1249	/ ( zu(nzt) - rayleigh_damping_height ) )&
	1250	)**2
[108]	1251	ENDIF
	1252	ENDDO
	1253	ELSE
	1254	DO k = nzt, nzb+1, -1
	1255	IF ( zu(k) <= rayleigh_damping_height ) THEN
	1256	rdf(k) = rayleigh_damping_factor * &
	1257	( SIN( pi * 0.5 * ( rayleigh_damping_height - zu(k) ) &
	1258	/ ( rayleigh_damping_height - zu(nzb+1)))&
	1259	)**2
	1260	ENDIF
	1261	ENDDO
	1262	ENDIF
[1]	1263	ENDIF
	1264
	1265	!
	1266	!-- Initialize diffusivities used within the outflow damping layer in case of
	1267	!-- non-cyclic lateral boundaries. A linear increase is assumed over the first
	1268	!-- half of the width of the damping layer
[73]	1269	IF ( bc_lr == 'dirichlet/radiation' ) THEN
[1]	1270
	1271	DO i = nxl-1, nxr+1
[73]	1272	IF ( i >= nx - outflow_damping_width ) THEN
	1273	km_damp_x(i) = km_damp_max * MIN( 1.0, &
	1274	( i - ( nx - outflow_damping_width ) ) / &
	1275	REAL( outflow_damping_width/2 ) &
	1276	)
	1277	ELSE
	1278	km_damp_x(i) = 0.0
	1279	ENDIF
	1280	ENDDO
[1]	1281
[73]	1282	ELSEIF ( bc_lr == 'radiation/dirichlet' ) THEN
[1]	1283
[73]	1284	DO i = nxl-1, nxr+1
	1285	IF ( i <= outflow_damping_width ) THEN
	1286	km_damp_x(i) = km_damp_max * MIN( 1.0, &
	1287	( outflow_damping_width - i ) / &
	1288	REAL( outflow_damping_width/2 ) &
	1289	)
	1290	ELSE
	1291	km_damp_x(i) = 0.0
	1292	ENDIF
	1293	ENDDO
[1]	1294
[73]	1295	ENDIF
[1]	1296
[73]	1297	IF ( bc_ns == 'dirichlet/radiation' ) THEN
[1]	1298
[73]	1299	DO j = nys-1, nyn+1
	1300	IF ( j >= ny - outflow_damping_width ) THEN
	1301	km_damp_y(j) = km_damp_max * MIN( 1.0, &
	1302	( j - ( ny - outflow_damping_width ) ) / &
	1303	REAL( outflow_damping_width/2 ) &
	1304	)
	1305	ELSE
	1306	km_damp_y(j) = 0.0
[1]	1307	ENDIF
	1308	ENDDO
	1309
[73]	1310	ELSEIF ( bc_ns == 'radiation/dirichlet' ) THEN
[1]	1311
	1312	DO j = nys-1, nyn+1
[73]	1313	IF ( j <= outflow_damping_width ) THEN
	1314	km_damp_y(j) = km_damp_max * MIN( 1.0, &
	1315	( outflow_damping_width - j ) / &
	1316	REAL( outflow_damping_width/2 ) &
	1317	)
	1318	ELSE
	1319	km_damp_y(j) = 0.0
[1]	1320	ENDIF
[73]	1321	ENDDO
[1]	1322
	1323	ENDIF
	1324
	1325	!
	1326	!-- Initialize local summation arrays for UP flow_statistics. This is necessary
	1327	!-- because they may not yet have been initialized when they are called from
	1328	!-- flow_statistics (or - depending on the chosen model run - are never
	1329	!-- initialized)
	1330	sums_divnew_l = 0.0
	1331	sums_divold_l = 0.0
	1332	sums_l_l = 0.0
	1333	sums_up_fraction_l = 0.0
	1334	sums_wsts_bc_l = 0.0
	1335
	1336	!
	1337	!-- Pre-set masks for regional statistics. Default is the total model domain.
	1338	rmask = 1.0
	1339
	1340	!
[51]	1341	!-- User-defined initializing actions. Check afterwards, if maximum number
	1342	!-- of allowed timeseries is not exceeded
[1]	1343	CALL user_init
	1344
[51]	1345	IF ( dots_num > dots_max ) THEN
	1346	IF ( myid == 0 ) THEN
	1347	PRINT*, '+++ user_init: number of time series quantities exceeds', &
	1348	' its maximum of dots_max = ', dots_max
	1349	PRINT*, ' Please increase dots_max in modules.f90.'
	1350	ENDIF
	1351	CALL local_stop
	1352	ENDIF
	1353
[1]	1354	!
	1355	!-- Input binary data file is not needed anymore. This line must be placed
	1356	!-- after call of user_init!
	1357	CALL close_file( 13 )
	1358
	1359	!
	1360	!-- Compute total sum of active mask grid points
	1361	!-- ngp_2dh: number of grid points of a horizontal cross section through the
	1362	!-- total domain
	1363	!-- ngp_3d: number of grid points of the total domain
[132]	1364	ngp_2dh_outer_l = 0
	1365	ngp_2dh_outer = 0
	1366	ngp_2dh_s_inner_l = 0
	1367	ngp_2dh_s_inner = 0
	1368	ngp_2dh_l = 0
	1369	ngp_2dh = 0
	1370	ngp_3d_inner_l = 0
	1371	ngp_3d_inner = 0
	1372	ngp_3d = 0
	1373	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
[1]	1374
	1375	DO sr = 0, statistic_regions
	1376	DO i = nxl, nxr
	1377	DO j = nys, nyn
	1378	IF ( rmask(j,i,sr) == 1.0 ) THEN
	1379	!
	1380	!-- All xy-grid points
	1381	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
	1382	!
	1383	!-- xy-grid points above topography
	1384	DO k = nzb_s_outer(j,i), nz + 1
	1385	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + 1
	1386	ENDDO
[132]	1387	DO k = nzb_s_inner(j,i), nz + 1
	1388	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + 1
	1389	ENDDO
[1]	1390	!
	1391	!-- All grid points of the total domain above topography
	1392	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + &
	1393	( nz - nzb_s_inner(j,i) + 2 )
	1394	ENDIF
	1395	ENDDO
	1396	ENDDO
	1397	ENDDO
	1398
	1399	sr = statistic_regions + 1
	1400	#if defined( __parallel )
	1401	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
	1402	comm2d, ierr )
	1403	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
	1404	MPI_INTEGER, MPI_SUM, comm2d, ierr )
[132]	1405	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
	1406	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
[1]	1407	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner(0), sr, MPI_INTEGER, &
	1408	MPI_SUM, comm2d, ierr )
	1409	#else
[132]	1410	ngp_2dh = ngp_2dh_l
	1411	ngp_2dh_outer = ngp_2dh_outer_l
	1412	ngp_2dh_s_inner = ngp_2dh_s_inner_l
	1413	ngp_3d_inner = ngp_3d_inner_l
[1]	1414	#endif
	1415
	1416	ngp_3d = ngp_2dh * ( nz + 2 )
	1417
	1418	!
	1419	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
	1420	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
	1421	!-- the respective subdomain lie below the surface topography
	1422	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
	1423	ngp_3d_inner = MAX( 1, ngp_3d_inner(:) )
	1424
	1425	DEALLOCATE( ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l )
	1426
	1427
	1428	END SUBROUTINE init_3d_model

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