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init_3d_model.f90 @ 4180

Last change on this file since 4180 was 4180, checked in by scharf, 5 years ago

removed comments in 'Former revisions' section that are older than 01.01.2019

Property svn:keywords set to Id

Property svn:mergeinfo set to False

/palm/branches/chemistry/SOURCE/init_3d_model.f90	2047-3190,3218-3297
/palm/branches/forwind/SOURCE/init_3d_model.f90	1564-1913
/palm/branches/mosaik_M2/init_3d_model.f90	2360-3471
/palm/branches/palm4u/SOURCE/init_3d_model.f90	2540-2692
/palm/branches/rans/SOURCE/init_3d_model.f90	2078-3128
/palm/branches/resler/SOURCE/init_3d_model.f90	2023-3605
/palm/branches/salsa/SOURCE/init_3d_model.f90	2503-3581

File size: 79.7 KB

Rev	Line
[1682]	1	!> @file init_3d_model.f90
[2000]	2	!------------------------------------------------------------------------------!
[2696]	3	! This file is part of the PALM model system.
[1036]	4	!
[2000]	5	! PALM is free software: you can redistribute it and/or modify it under the
	6	! terms of the GNU General Public License as published by the Free Software
	7	! Foundation, either version 3 of the License, or (at your option) any later
	8	! version.
[1036]	9	!
	10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
	11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
	12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
	13	!
	14	! You should have received a copy of the GNU General Public License along with
	15	! PALM. If not, see <http://www.gnu.org/licenses/>.
	16	!
[3648]	17	! Copyright 1997-2019 Leibniz Universitaet Hannover
[2000]	18	!------------------------------------------------------------------------------!
[1036]	19	!
[254]	20	! Current revisions:
[732]	21	! ------------------
[2233]	22	!
[3589]	23	!
[2233]	24	! Former revisions:
	25	! -----------------
	26	! $Id: init_3d_model.f90 4180 2019-08-21 14:37:54Z scharf $
[4168]	27	! Replace function get_topography_top_index by topo_top_ind
	28	!
	29	! 4151 2019-08-09 08:24:30Z suehring
[4151]	30	! Add netcdf directive around input calls (fix for last commit)
	31	!
	32	! 4150 2019-08-08 20:00:47Z suehring
[4150]	33	! Input of additional surface variables independent on land- or urban-surface
	34	! model
	35	!
	36	! 4131 2019-08-02 11:06:18Z monakurppa
[4131]	37	! Allocate sums and sums_l to allow profile output for salsa variables.
	38	!
	39	! 4130 2019-08-01 13:04:13Z suehring
[4130]	40	! Effectively reduce 3D initialization to 1D initial profiles. This is because
	41	! 3D initialization produces structures in the w-component that are correlated
	42	! with the processor grid for some unknown reason
	43	!
	44	! 4090 2019-07-11 15:06:47Z Giersch
[4090]	45	! Unused variables removed
	46	!
	47	! 4088 2019-07-11 13:57:56Z Giersch
[4088]	48	! Pressure and density profile calculations revised using basic functions
	49	!
	50	! 4048 2019-06-21 21:00:21Z knoop
[4028]	51	! Further modularization of particle code components
	52	!
	53	! 4017 2019-06-06 12:16:46Z schwenkel
[3987]	54	! Convert most location messages to debug messages to reduce output in
	55	! job logfile to a minimum
	56	!
	57	!
[3939]	58	! unused variable removed
	59	!
	60	! 3937 2019-04-29 15:09:07Z suehring
[3937]	61	! Move initialization of synthetic turbulence generator behind initialization
	62	! of offline nesting. Remove call for stg_adjust, as this is now already done
	63	! in stg_init.
	64	!
	65	! 3900 2019-04-16 15:17:43Z suehring
[3900]	66	! Fix problem with LOD = 2 initialization
	67	!
	68	! 3885 2019-04-11 11:29:34Z kanani
[3885]	69	! Changes related to global restructuring of location messages and introduction
	70	! of additional debug messages
	71	!
	72	! 3849 2019-04-01 16:35:16Z knoop
[3747]	73	! Move initialization of rmask before initializing user_init_arrays
	74	!
	75	! 3711 2019-01-31 13:44:26Z knoop
[3711]	76	! Introduced module_interface_init_checks for post-init checks in modules
	77	!
	78	! 3700 2019-01-26 17:03:42Z knoop
[3685]	79	! Some interface calls moved to module_interface + cleanup
	80	!
	81	! 3648 2019-01-02 16:35:46Z suehring
[3648]	82	! Rename subroutines for surface-data output
	83	!
[3569]	84	!
[1]	85	! Description:
	86	! ------------
[1682]	87	!> Allocation of arrays and initialization of the 3D model via
	88	!> a) pre-run the 1D model
	89	!> or
	90	!> b) pre-set constant linear profiles
	91	!> or
	92	!> c) read values of a previous run
[1]	93	!------------------------------------------------------------------------------!
[1682]	94	SUBROUTINE init_3d_model
[1]	95
[3298]	96
[667]	97	USE advec_ws
[1320]	98
[1]	99	USE arrays_3d
[1849]	100
[3274]	101	USE basic_constants_and_equations_mod, &
[4090]	102	ONLY: c_p, g, l_v, pi, exner_function, exner_function_invers, &
[3274]	103	ideal_gas_law_rho, ideal_gas_law_rho_pt, barometric_formula
	104
	105	USE bulk_cloud_model_mod, &
[3685]	106	ONLY: bulk_cloud_model
[3274]	107
[3298]	108	USE chem_modules, &
[3685]	109	ONLY: max_pr_cs ! ToDo: this dependency needs to be removed cause it is ugly #new_dom
[3298]	110
[1]	111	USE control_parameters
[3298]	112
[1320]	113	USE grid_variables, &
[2037]	114	ONLY: dx, dy, ddx2_mg, ddy2_mg
[2817]	115
[1]	116	USE indices
[3469]	117
[1320]	118	USE kinds
[1496]	119
[2320]	120	USE lsf_nudging_mod, &
[3685]	121	ONLY: ls_forcing_surf
[1849]	122
[2338]	123	USE model_1d_mod, &
[3241]	124	ONLY: init_1d_model, l1d, u1d, v1d
[2338]	125
[3685]	126	USE module_interface, &
[3711]	127	ONLY: module_interface_init_arrays, &
	128	module_interface_init, &
	129	module_interface_init_checks
[3685]	130
[3159]	131	USE multi_agent_system_mod, &
	132	ONLY: agents_active, mas_init
	133
[1783]	134	USE netcdf_interface, &
[3700]	135	ONLY: dots_max
[2696]	136
[2906]	137	USE netcdf_data_input_mod, &
[4150]	138	ONLY: char_fill, &
	139	check_existence, &
	140	close_input_file, &
	141	get_attribute, &
	142	get_variable, &
	143	init_3d, &
	144	input_pids_static, &
	145	inquire_num_variables, &
	146	inquire_variable_names, &
	147	input_file_static, &
	148	netcdf_data_input_init_3d, &
	149	open_read_file, &
	150	real_2d
	151
[3347]	152	USE nesting_offl_mod, &
	153	ONLY: nesting_offl_init
[3294]	154
[1]	155	USE pegrid
[3298]	156
[3524]	157	#if defined( __parallel )
[2934]	158	USE pmc_interface, &
	159	ONLY: nested_run
[3524]	160	#endif
[2934]	161
[1320]	162	USE random_function_mod
[3685]	163
[1400]	164	USE random_generator_parallel, &
[2172]	165	ONLY: init_parallel_random_generator
[3685]	166
[2894]	167	USE read_restart_data_mod, &
[3685]	168	ONLY: rrd_read_parts_of_global, rrd_local
	169
[1320]	170	USE statistics, &
[1738]	171	ONLY: hom, hom_sum, mean_surface_level_height, pr_palm, rmask, &
[1833]	172	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
[2277]	173	sums_l_l, sums_wsts_bc_l, ts_value, &
[1833]	174	weight_pres, weight_substep
[2259]	175
	176	USE synthetic_turbulence_generator_mod, &
[3939]	177	ONLY: stg_init, use_syn_turb_gen
[3685]	178
[1691]	179	USE surface_layer_fluxes_mod, &
	180	ONLY: init_surface_layer_fluxes
[2232]	181
	182	USE surface_mod, &
[4150]	183	ONLY : init_single_surface_properties, &
	184	init_surface_arrays, &
	185	init_surfaces, &
	186	surf_def_h, &
	187	surf_def_v, &
	188	surf_lsm_h, &
[4168]	189	surf_usm_h
[3685]	190
[3849]	191	#if defined( _OPENACC )
	192	USE surface_mod, &
	193	ONLY : bc_h
	194	#endif
	195
[3648]	196	USE surface_data_output_mod, &
	197	ONLY: surface_data_output_init
[3685]	198
[2007]	199	USE transpose_indices
[1]	200
	201	IMPLICIT NONE
	202
[4150]	203	CHARACTER(LEN=50), DIMENSION(:), ALLOCATABLE :: vars_pids_static !< variable names in static input file
	204
	205	INTEGER(iwp) :: i !< grid index in x direction
	206	INTEGER(iwp) :: ind_array(1) !< dummy used to determine start index for external pressure forcing
	207	INTEGER(iwp) :: j !< grid index in y direction
	208	INTEGER(iwp) :: k !< grid index in z direction
	209	INTEGER(iwp) :: k_surf !< surface level index
	210	INTEGER(iwp) :: l !< running index over surface orientation
	211	INTEGER(iwp) :: m !< index of surface element in surface data type
	212	INTEGER(iwp) :: num_vars_pids_static !< number of variables in static input file
	213	INTEGER(iwp) :: nz_u_shift !< topography-top index on u-grid, used to vertically shift initial profiles
	214	INTEGER(iwp) :: nz_v_shift !< topography-top index on v-grid, used to vertically shift initial profiles
	215	INTEGER(iwp) :: nz_w_shift !< topography-top index on w-grid, used to vertically shift initial profiles
	216	INTEGER(iwp) :: nz_s_shift !< topography-top index on scalar-grid, used to vertically shift initial profiles
	217	INTEGER(iwp) :: nz_u_shift_l !< topography-top index on u-grid, used to vertically shift initial profiles
	218	INTEGER(iwp) :: nz_v_shift_l !< topography-top index on v-grid, used to vertically shift initial profiles
	219	INTEGER(iwp) :: nz_w_shift_l !< topography-top index on w-grid, used to vertically shift initial profiles
	220	INTEGER(iwp) :: nz_s_shift_l !< topography-top index on scalar-grid, used to vertically shift initial profiles
	221	INTEGER(iwp) :: nzt_l !< index of top PE boundary for multigrid level
	222	INTEGER(iwp) :: pids_static_id !< file id for static input file
	223	INTEGER(iwp) :: sr !< index of statistic region
[1]	224
[3547]	225	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !< toal number of horizontal grid points in statistical region on subdomain
[1]	226
[3547]	227	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !< number of horizontal non-wall bounded grid points on subdomain
	228	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !< number of horizontal non-topography grid points on subdomain
[1]	229
[4150]	230
	231
[3182]	232	REAL(wp), DIMENSION(:), ALLOCATABLE :: init_l !< dummy array used for averaging 3D data to obtain inital profiles
[2037]	233	REAL(wp), DIMENSION(:), ALLOCATABLE :: p_hydrostatic !< hydrostatic pressure
	234
	235	REAL(wp) :: dx_l !< grid spacing along x on different multigrid level
	236	REAL(wp) :: dy_l !< grid spacing along y on different multigrid level
	237
[3547]	238	REAL(wp), DIMENSION(1:3) :: volume_flow_area_l !< area of lateral and top model domain surface on local subdomain
	239	REAL(wp), DIMENSION(1:3) :: volume_flow_initial_l !< initial volume flow into model domain
[1]	240
[3547]	241	REAL(wp), DIMENSION(:), ALLOCATABLE :: mean_surface_level_height_l !< mean surface level height on subdomain
	242	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !< total number of non-topography grid points on subdomain
	243	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !< total number of non-topography grid points
[1]	244
[4150]	245	TYPE(real_2d) :: tmp_2d !< temporary variable to input additional surface-data from static file
	246
[3987]	247	CALL location_message( 'model initialization', 'start' )
	248
	249	IF ( debug_output ) CALL debug_message( 'allocating arrays', 'start' )
[1]	250	!
	251	!-- Allocate arrays
[1788]	252	ALLOCATE( mean_surface_level_height(0:statistic_regions), &
	253	mean_surface_level_height_l(0:statistic_regions), &
	254	ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
	255	ngp_3d(0:statistic_regions), &
	256	ngp_3d_inner(0:statistic_regions), &
	257	ngp_3d_inner_l(0:statistic_regions), &
	258	ngp_3d_inner_tmp(0:statistic_regions), &
	259	sums_divnew_l(0:statistic_regions), &
[1]	260	sums_divold_l(0:statistic_regions) )
[1195]	261	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
[1788]	262	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
	263	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
	264	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
	265	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
	266	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
[4131]	267	sums(nzb:nzt+1,pr_palm+max_pr_user+max_pr_cs+max_pr_salsa), &
	268	sums_l(nzb:nzt+1,pr_palm+max_pr_user+max_pr_cs+max_pr_salsa,0:threads_per_task-1), &
[1788]	269	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
[3700]	270	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions) )
	271	ALLOCATE( ts_value(dots_max,0:statistic_regions) )
[978]	272	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
[1]	273
[1788]	274	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
	275	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[1010]	276	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	277
[2696]	278	ALLOCATE( pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[1788]	279	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	280	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	281	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	282	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	283	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	284	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	285	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	286	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	287	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[667]	288	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1788]	289	IF ( .NOT. neutral ) THEN
[1032]	290	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	291	ENDIF
[673]	292	!
[3747]	293	!-- Pre-set masks for regional statistics. Default is the total model domain.
	294	!-- Ghost points are excluded because counting values at the ghost boundaries
	295	!-- would bias the statistics
	296	rmask = 1.0_wp
	297	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
	298	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
	299	!
[707]	300	!-- Following array is required for perturbation pressure within the iterative
	301	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
	302	!-- the weighted average of the substeps and cannot be used in the Poisson
	303	!-- solver.
	304	IF ( psolver == 'sor' ) THEN
	305	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1575]	306	ELSEIF ( psolver(1:9) == 'multigrid' ) THEN
[707]	307	!
	308	!-- For performance reasons, multigrid is using one ghost layer only
	309	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
[673]	310	ENDIF
[1]	311
[1111]	312	!
	313	!-- Array for storing constant coeffficients of the tridiagonal solver
	314	IF ( psolver == 'poisfft' ) THEN
[1212]	315	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
[1111]	316	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
	317	ENDIF
	318
[1960]	319	IF ( humidity ) THEN
[1]	320	!
[1960]	321	!-- 3D-humidity
[1788]	322	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	323	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[3011]	324	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	325	vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	326	ENDIF
[1960]	327
	328	IF ( passive_scalar ) THEN
[1]	329
[1960]	330	!
	331	!-- 3D scalar arrays
	332	ALLOCATE( s_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	333	s_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	334	s_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[3636]	335
[1960]	336	ENDIF
	337
[1]	338	!
[3302]	339	!-- Allocate and set 1d-profiles for Stokes drift velocity. It may be set to
	340	!-- non-zero values later in ocean_init
	341	ALLOCATE( u_stokes_zu(nzb:nzt+1), u_stokes_zw(nzb:nzt+1), &
	342	v_stokes_zu(nzb:nzt+1), v_stokes_zw(nzb:nzt+1) )
	343	u_stokes_zu(:) = 0.0_wp
	344	u_stokes_zw(:) = 0.0_wp
	345	v_stokes_zu(:) = 0.0_wp
	346	v_stokes_zw(:) = 0.0_wp
	347
	348	!
[2037]	349	!-- Allocation of anelastic and Boussinesq approximation specific arrays
	350	ALLOCATE( p_hydrostatic(nzb:nzt+1) )
	351	ALLOCATE( rho_air(nzb:nzt+1) )
	352	ALLOCATE( rho_air_zw(nzb:nzt+1) )
	353	ALLOCATE( drho_air(nzb:nzt+1) )
	354	ALLOCATE( drho_air_zw(nzb:nzt+1) )
	355	!
[4088]	356	!-- Density profile calculation for anelastic and Boussinesq approximation
	357	!-- In case of a Boussinesq approximation, a constant density is calculated
	358	!-- mainly for output purposes. This density do not need to be considered
	359	!-- in the model's system of equations.
	360	IF ( TRIM( approximation ) == 'anelastic' ) THEN
[2037]	361	DO k = nzb, nzt+1
[4088]	362	p_hydrostatic(k) = barometric_formula(zu(k), pt_surface * &
	363	exner_function(surface_pressure * 100.0_wp), &
	364	surface_pressure * 100.0_wp)
	365
	366	rho_air(k) = ideal_gas_law_rho_pt(p_hydrostatic(k), pt_init(k))
[2037]	367	ENDDO
[4088]	368
[2037]	369	DO k = nzb, nzt
	370	rho_air_zw(k) = 0.5_wp * ( rho_air(k) + rho_air(k+1) )
	371	ENDDO
[4088]	372
[2037]	373	rho_air_zw(nzt+1) = rho_air_zw(nzt) &
	374	+ 2.0_wp * ( rho_air(nzt+1) - rho_air_zw(nzt) )
[4088]	375
[2037]	376	ELSE
[2252]	377	DO k = nzb, nzt+1
[4088]	378	p_hydrostatic(k) = barometric_formula(zu(nzb), pt_surface * &
	379	exner_function(surface_pressure * 100.0_wp), &
	380	surface_pressure * 100.0_wp)
	381
	382	rho_air(k) = ideal_gas_law_rho_pt(p_hydrostatic(k), pt_init(nzb))
[2252]	383	ENDDO
[4088]	384
[2252]	385	DO k = nzb, nzt
	386	rho_air_zw(k) = 0.5_wp * ( rho_air(k) + rho_air(k+1) )
	387	ENDDO
[4088]	388
[2252]	389	rho_air_zw(nzt+1) = rho_air_zw(nzt) &
	390	+ 2.0_wp * ( rho_air(nzt+1) - rho_air_zw(nzt) )
[4088]	391
[2037]	392	ENDIF
[2696]	393	!
[2037]	394	!-- compute the inverse density array in order to avoid expencive divisions
	395	drho_air = 1.0_wp / rho_air
	396	drho_air_zw = 1.0_wp / rho_air_zw
	397
	398	!
	399	!-- Allocation of flux conversion arrays
	400	ALLOCATE( heatflux_input_conversion(nzb:nzt+1) )
	401	ALLOCATE( waterflux_input_conversion(nzb:nzt+1) )
	402	ALLOCATE( momentumflux_input_conversion(nzb:nzt+1) )
	403	ALLOCATE( heatflux_output_conversion(nzb:nzt+1) )
	404	ALLOCATE( waterflux_output_conversion(nzb:nzt+1) )
	405	ALLOCATE( momentumflux_output_conversion(nzb:nzt+1) )
	406
	407	!
	408	!-- calculate flux conversion factors according to approximation and in-/output mode
	409	DO k = nzb, nzt+1
	410
	411	IF ( TRIM( flux_input_mode ) == 'kinematic' ) THEN
	412	heatflux_input_conversion(k) = rho_air_zw(k)
	413	waterflux_input_conversion(k) = rho_air_zw(k)
	414	momentumflux_input_conversion(k) = rho_air_zw(k)
	415	ELSEIF ( TRIM( flux_input_mode ) == 'dynamic' ) THEN
[3274]	416	heatflux_input_conversion(k) = 1.0_wp / c_p
[2037]	417	waterflux_input_conversion(k) = 1.0_wp / l_v
	418	momentumflux_input_conversion(k) = 1.0_wp
	419	ENDIF
	420
	421	IF ( TRIM( flux_output_mode ) == 'kinematic' ) THEN
	422	heatflux_output_conversion(k) = drho_air_zw(k)
	423	waterflux_output_conversion(k) = drho_air_zw(k)
	424	momentumflux_output_conversion(k) = drho_air_zw(k)
	425	ELSEIF ( TRIM( flux_output_mode ) == 'dynamic' ) THEN
[3274]	426	heatflux_output_conversion(k) = c_p
[2037]	427	waterflux_output_conversion(k) = l_v
	428	momentumflux_output_conversion(k) = 1.0_wp
	429	ENDIF
	430
	431	IF ( .NOT. humidity ) THEN
	432	waterflux_input_conversion(k) = 1.0_wp
	433	waterflux_output_conversion(k) = 1.0_wp
	434	ENDIF
	435
	436	ENDDO
	437
	438	!
	439	!-- In case of multigrid method, compute grid lengths and grid factors for the
	440	!-- grid levels with respective density on each grid
	441	IF ( psolver(1:9) == 'multigrid' ) THEN
	442
	443	ALLOCATE( ddx2_mg(maximum_grid_level) )
	444	ALLOCATE( ddy2_mg(maximum_grid_level) )
	445	ALLOCATE( dzu_mg(nzb+1:nzt+1,maximum_grid_level) )
	446	ALLOCATE( dzw_mg(nzb+1:nzt+1,maximum_grid_level) )
	447	ALLOCATE( f1_mg(nzb+1:nzt,maximum_grid_level) )
	448	ALLOCATE( f2_mg(nzb+1:nzt,maximum_grid_level) )
	449	ALLOCATE( f3_mg(nzb+1:nzt,maximum_grid_level) )
	450	ALLOCATE( rho_air_mg(nzb:nzt+1,maximum_grid_level) )
	451	ALLOCATE( rho_air_zw_mg(nzb:nzt+1,maximum_grid_level) )
	452
	453	dzu_mg(:,maximum_grid_level) = dzu
	454	rho_air_mg(:,maximum_grid_level) = rho_air
	455	!
	456	!-- Next line to ensure an equally spaced grid.
	457	dzu_mg(1,maximum_grid_level) = dzu(2)
	458	rho_air_mg(nzb,maximum_grid_level) = rho_air(nzb) + &
	459	(rho_air(nzb) - rho_air(nzb+1))
	460
	461	dzw_mg(:,maximum_grid_level) = dzw
	462	rho_air_zw_mg(:,maximum_grid_level) = rho_air_zw
	463	nzt_l = nzt
	464	DO l = maximum_grid_level-1, 1, -1
	465	dzu_mg(nzb+1,l) = 2.0_wp * dzu_mg(nzb+1,l+1)
	466	dzw_mg(nzb+1,l) = 2.0_wp * dzw_mg(nzb+1,l+1)
	467	rho_air_mg(nzb,l) = rho_air_mg(nzb,l+1) + (rho_air_mg(nzb,l+1) - rho_air_mg(nzb+1,l+1))
	468	rho_air_zw_mg(nzb,l) = rho_air_zw_mg(nzb,l+1) + (rho_air_zw_mg(nzb,l+1) - rho_air_zw_mg(nzb+1,l+1))
	469	rho_air_mg(nzb+1,l) = rho_air_mg(nzb+1,l+1)
	470	rho_air_zw_mg(nzb+1,l) = rho_air_zw_mg(nzb+1,l+1)
	471	nzt_l = nzt_l / 2
	472	DO k = 2, nzt_l+1
	473	dzu_mg(k,l) = dzu_mg(2k-2,l+1) + dzu_mg(2k-1,l+1)
	474	dzw_mg(k,l) = dzw_mg(2k-2,l+1) + dzw_mg(2k-1,l+1)
	475	rho_air_mg(k,l) = rho_air_mg(2*k-1,l+1)
	476	rho_air_zw_mg(k,l) = rho_air_zw_mg(2*k-1,l+1)
	477	ENDDO
	478	ENDDO
	479
	480	nzt_l = nzt
	481	dx_l = dx
	482	dy_l = dy
	483	DO l = maximum_grid_level, 1, -1
	484	ddx2_mg(l) = 1.0_wp / dx_l**2
	485	ddy2_mg(l) = 1.0_wp / dy_l**2
	486	DO k = nzb+1, nzt_l
	487	f2_mg(k,l) = rho_air_zw_mg(k,l) / ( dzu_mg(k+1,l) * dzw_mg(k,l) )
	488	f3_mg(k,l) = rho_air_zw_mg(k-1,l) / ( dzu_mg(k,l) * dzw_mg(k,l) )
	489	f1_mg(k,l) = 2.0_wp * ( ddx2_mg(l) + ddy2_mg(l) ) &
	490	* rho_air_mg(k,l) + f2_mg(k,l) + f3_mg(k,l)
	491	ENDDO
	492	nzt_l = nzt_l / 2
	493	dx_l = dx_l * 2.0_wp
	494	dy_l = dy_l * 2.0_wp
	495	ENDDO
	496
	497	ENDIF
	498
	499	!
[1299]	500	!-- 1D-array for large scale subsidence velocity
[1361]	501	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
	502	ALLOCATE ( w_subs(nzb:nzt+1) )
	503	w_subs = 0.0_wp
	504	ENDIF
[1299]	505
	506	!
[106]	507	!-- Arrays to store velocity data from t-dt and the phase speeds which
	508	!-- are needed for radiation boundary conditions
[3182]	509	IF ( bc_radiation_l ) THEN
[1788]	510	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
	511	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
[667]	512	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
[73]	513	ENDIF
[3182]	514	IF ( bc_radiation_r ) THEN
[1788]	515	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
	516	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
[667]	517	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
[73]	518	ENDIF
[3182]	519	IF ( bc_radiation_l .OR. bc_radiation_r ) THEN
[1788]	520	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
[667]	521	c_w(nzb:nzt+1,nysg:nyng) )
[106]	522	ENDIF
[3182]	523	IF ( bc_radiation_s ) THEN
[1788]	524	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
	525	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
[667]	526	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
[73]	527	ENDIF
[3182]	528	IF ( bc_radiation_n ) THEN
[1788]	529	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
	530	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
[667]	531	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
[73]	532	ENDIF
[3182]	533	IF ( bc_radiation_s .OR. bc_radiation_n ) THEN
[1788]	534	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
[667]	535	c_w(nzb:nzt+1,nxlg:nxrg) )
[106]	536	ENDIF
[3182]	537	IF ( bc_radiation_l .OR. bc_radiation_r .OR. bc_radiation_s .OR. &
	538	bc_radiation_n ) THEN
[978]	539	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
	540	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
	541	ENDIF
[73]	542
	543	!
[1]	544	!-- Initial assignment of the pointers
[1032]	545	IF ( .NOT. neutral ) THEN
	546	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
	547	ELSE
	548	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
	549	ENDIF
[1001]	550	u => u_1; u_p => u_2; tu_m => u_3
	551	v => v_1; v_p => v_2; tv_m => v_3
	552	w => w_1; w_p => w_2; tw_m => w_3
[1]	553
[1960]	554	IF ( humidity ) THEN
[1001]	555	q => q_1; q_p => q_2; tq_m => q_3
[3274]	556	vpt => vpt_1
[1001]	557	ENDIF
[1960]	558
	559	IF ( passive_scalar ) THEN
	560	s => s_1; s_p => s_2; ts_m => s_3
	561	ENDIF
[1]	562
	563	!
[2696]	564	!-- Initialize surface arrays
[2232]	565	CALL init_surface_arrays
	566	!
[3294]	567	!-- Allocate arrays for other modules
[3685]	568	CALL module_interface_init_arrays
[1551]	569
[1914]	570
[2320]	571	!
[709]	572	!-- Allocate arrays containing the RK coefficient for calculation of
	573	!-- perturbation pressure and turbulent fluxes. At this point values are
	574	!-- set for pressure calculation during initialization (where no timestep
	575	!-- is done). Further below the values needed within the timestep scheme
	576	!-- will be set.
[1788]	577	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
[1878]	578	weight_pres(1:intermediate_timestep_count_max) )
[1340]	579	weight_substep = 1.0_wp
	580	weight_pres = 1.0_wp
[1918]	581	intermediate_timestep_count = 0 ! needed when simulated_time = 0.0
[673]	582
[3987]	583	IF ( debug_output ) CALL debug_message( 'allocating arrays', 'end' )
[1918]	584
[673]	585	!
[3014]	586	!-- Initialize time series
	587	ts_value = 0.0_wp
	588
	589	!
[1918]	590	!-- Initialize local summation arrays for routine flow_statistics.
	591	!-- This is necessary because they may not yet have been initialized when they
	592	!-- are called from flow_statistics (or - depending on the chosen model run -
	593	!-- are never initialized)
	594	sums_divnew_l = 0.0_wp
	595	sums_divold_l = 0.0_wp
	596	sums_l_l = 0.0_wp
	597	sums_wsts_bc_l = 0.0_wp
[3182]	598
[1918]	599	!
[1]	600	!-- Initialize model variables
[1788]	601	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
[328]	602	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
[1]	603	!
[2696]	604	!-- Initialization with provided input data derived from larger-scale model
	605	IF ( INDEX( initializing_actions, 'inifor' ) /= 0 ) THEN
[3987]	606	IF ( debug_output ) CALL debug_message( 'initializing with INIFOR', 'start' )
[2696]	607	!
[3051]	608	!-- Read initial 1D profiles or 3D data from NetCDF file, depending
	609	!-- on the provided level-of-detail.
[2696]	610	!-- At the moment, only u, v, w, pt and q are provided.
	611	CALL netcdf_data_input_init_3d
	612	!
[3182]	613	!-- Please note, Inifor provides data from nzb+1 to nzt.
	614	!-- Bottom and top boundary conditions for Inifor profiles are already
	615	!-- set (just after reading), so that this is not necessary here.
	616	!-- Depending on the provided level-of-detail, initial Inifor data is
	617	!-- either stored on data type (lod=1), or directly on 3D arrays (lod=2).
	618	!-- In order to obtain also initial profiles in case of lod=2 (which
	619	!-- is required for e.g. damping), average over 3D data.
	620	IF( init_3d%lod_u == 1 ) THEN
	621	u_init = init_3d%u_init
	622	ELSEIF( init_3d%lod_u == 2 ) THEN
	623	ALLOCATE( init_l(nzb:nzt+1) )
	624	DO k = nzb, nzt+1
	625	init_l(k) = SUM( u(k,nys:nyn,nxl:nxr) )
	626	ENDDO
	627	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
[1384]	628
[3182]	629	#if defined( __parallel )
	630	CALL MPI_ALLREDUCE( init_l, u_init, nzt+1-nzb+1, &
	631	MPI_REAL, MPI_SUM, comm2d, ierr )
	632	#else
	633	u_init = init_l
	634	#endif
	635	DEALLOCATE( init_l )
[3051]	636
[2696]	637	ENDIF
[3182]	638
	639	IF( init_3d%lod_v == 1 ) THEN
	640	v_init = init_3d%v_init
	641	ELSEIF( init_3d%lod_v == 2 ) THEN
	642	ALLOCATE( init_l(nzb:nzt+1) )
	643	DO k = nzb, nzt+1
	644	init_l(k) = SUM( v(k,nys:nyn,nxl:nxr) )
	645	ENDDO
	646	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
[2696]	647
[3182]	648	#if defined( __parallel )
	649	CALL MPI_ALLREDUCE( init_l, v_init, nzt+1-nzb+1, &
	650	MPI_REAL, MPI_SUM, comm2d, ierr )
	651	#else
	652	v_init = init_l
	653	#endif
	654	DEALLOCATE( init_l )
	655	ENDIF
	656	IF( .NOT. neutral ) THEN
	657	IF( init_3d%lod_pt == 1 ) THEN
	658	pt_init = init_3d%pt_init
	659	ELSEIF( init_3d%lod_pt == 2 ) THEN
	660	ALLOCATE( init_l(nzb:nzt+1) )
	661	DO k = nzb, nzt+1
	662	init_l(k) = SUM( pt(k,nys:nyn,nxl:nxr) )
	663	ENDDO
	664	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
	665
	666	#if defined( __parallel )
	667	CALL MPI_ALLREDUCE( init_l, pt_init, nzt+1-nzb+1, &
	668	MPI_REAL, MPI_SUM, comm2d, ierr )
	669	#else
	670	pt_init = init_l
	671	#endif
	672	DEALLOCATE( init_l )
	673	ENDIF
	674	ENDIF
	675
	676
	677	IF( humidity ) THEN
	678	IF( init_3d%lod_q == 1 ) THEN
	679	q_init = init_3d%q_init
	680	ELSEIF( init_3d%lod_q == 2 ) THEN
	681	ALLOCATE( init_l(nzb:nzt+1) )
	682	DO k = nzb, nzt+1
	683	init_l(k) = SUM( q(k,nys:nyn,nxl:nxr) )
	684	ENDDO
	685	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
	686
	687	#if defined( __parallel )
	688	CALL MPI_ALLREDUCE( init_l, q_init, nzt+1-nzb+1, &
	689	MPI_REAL, MPI_SUM, comm2d, ierr )
	690	#else
	691	q_init = init_l
	692	#endif
	693	DEALLOCATE( init_l )
	694	ENDIF
	695	ENDIF
	696
[2696]	697	!
[4130]	698	!-- Write initial profiles onto 3D arrays.
	699	!-- Work-around, 3D initialization of u,v,w creates artificial
	700	!-- structures wich correlate with the processor grid. The reason
	701	!-- for this is still unknown. To work-around this, 3D initialization
	702	!-- will be effectively reduce to a 1D initialization where no such
	703	!-- artificial structures appear.
[2696]	704	DO i = nxlg, nxrg
	705	DO j = nysg, nyng
[4130]	706	IF( init_3d%lod_u == 1 .OR. init_3d%lod_u == 2 ) &
	707	u(:,j,i) = u_init(:)
	708	IF( init_3d%lod_v == 1 .OR. init_3d%lod_u == 2 ) &
	709	v(:,j,i) = v_init(:)
	710	IF( .NOT. neutral .AND. &
	711	( init_3d%lod_pt == 1 .OR. init_3d%lod_pt == 2 ) ) &
[3051]	712	pt(:,j,i) = pt_init(:)
[4130]	713	IF( humidity .AND. &
	714	( init_3d%lod_q == 1 .OR. init_3d%lod_q == 2 ) ) &
	715	q(:,j,i) = q_init(:)
[2696]	716	ENDDO
	717	ENDDO
	718	!
[3182]	719	!-- Set geostrophic wind components.
[2938]	720	IF ( init_3d%from_file_ug ) THEN
	721	ug(:) = init_3d%ug_init(:)
	722	ENDIF
	723	IF ( init_3d%from_file_vg ) THEN
	724	vg(:) = init_3d%vg_init(:)
	725	ENDIF
[3404]	726	!
	727	!-- Set bottom and top boundary condition for geostrophic wind
[2938]	728	ug(nzt+1) = ug(nzt)
	729	vg(nzt+1) = vg(nzt)
[3404]	730	ug(nzb) = ug(nzb+1)
	731	vg(nzb) = vg(nzb+1)
[2696]	732	!
	733	!-- Set inital w to 0
	734	w = 0.0_wp
	735
	736	IF ( passive_scalar ) THEN
	737	DO i = nxlg, nxrg
	738	DO j = nysg, nyng
	739	s(:,j,i) = s_init
	740	ENDDO
	741	ENDDO
	742	ENDIF
	743
	744	!
	745	!-- Set velocity components at non-atmospheric / oceanic grid points to
	746	!-- zero.
	747	u = MERGE( u, 0.0_wp, BTEST( wall_flags_0, 1 ) )
	748	v = MERGE( v, 0.0_wp, BTEST( wall_flags_0, 2 ) )
	749	w = MERGE( w, 0.0_wp, BTEST( wall_flags_0, 3 ) )
[2700]	750	!
	751	!-- Initialize surface variables, e.g. friction velocity, momentum
	752	!-- fluxes, etc.
	753	CALL init_surfaces
[2696]	754
[3987]	755	IF ( debug_output ) CALL debug_message( 'initializing with INIFOR', 'end' )
[2696]	756	!
	757	!-- Initialization via computed 1D-model profiles
	758	ELSEIF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
	759
[3987]	760	IF ( debug_output ) CALL debug_message( 'initializing with 1D model profiles', 'start' )
[1]	761	!
	762	!-- Use solutions of the 1D model as initial profiles,
	763	!-- start 1D model
	764	CALL init_1d_model
	765	!
	766	!-- Transfer initial profiles to the arrays of the 3D model
[667]	767	DO i = nxlg, nxrg
	768	DO j = nysg, nyng
[1]	769	pt(:,j,i) = pt_init
	770	u(:,j,i) = u1d
	771	v(:,j,i) = v1d
	772	ENDDO
	773	ENDDO
	774
[1960]	775	IF ( humidity ) THEN
[667]	776	DO i = nxlg, nxrg
	777	DO j = nysg, nyng
[1]	778	q(:,j,i) = q_init
	779	ENDDO
	780	ENDDO
	781	ENDIF
[2292]	782
[1960]	783	IF ( passive_scalar ) THEN
	784	DO i = nxlg, nxrg
	785	DO j = nysg, nyng
	786	s(:,j,i) = s_init
	787	ENDDO
	788	ENDDO
	789	ENDIF
[1]	790	!
	791	!-- Store initial profiles for output purposes etc.
[2696]	792	IF ( .NOT. constant_diffusion ) THEN
[1]	793	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
	794	ENDIF
	795	!
[2696]	796	!-- Set velocities back to zero
[2758]	797	u = MERGE( u, 0.0_wp, BTEST( wall_flags_0, 1 ) )
	798	v = MERGE( v, 0.0_wp, BTEST( wall_flags_0, 2 ) )
[1]	799	!
[2696]	800	!-- WARNING: The extra boundary conditions set after running the
	801	!-- ------- 1D model impose an error on the divergence one layer
	802	!-- below the topography; need to correct later
	803	!-- ATTENTION: Provisional correction for Piacsek & Williams
	804	!-- --------- advection scheme: keep u and v zero one layer below
	805	!-- the topography.
	806	IF ( ibc_uv_b == 1 ) THEN
[667]	807	!
[2696]	808	!-- Neumann condition
	809	DO i = nxl-1, nxr+1
	810	DO j = nys-1, nyn+1
	811	u(nzb,j,i) = u(nzb+1,j,i)
	812	v(nzb,j,i) = v(nzb+1,j,i)
[1]	813	ENDDO
[2696]	814	ENDDO
[1]	815
	816	ENDIF
[2618]	817	!
	818	!-- Initialize surface variables, e.g. friction velocity, momentum
	819	!-- fluxes, etc.
	820	CALL init_surfaces
[1]	821
[3987]	822	IF ( debug_output ) CALL debug_message( 'initializing with 1D model profiles', 'end' )
[1384]	823
[1788]	824	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
[1]	825	THEN
[1241]	826
[3987]	827	IF ( debug_output ) CALL debug_message( 'initializing with constant profiles', 'start' )
[2259]	828
	829	!
[1]	830	!-- Use constructed initial profiles (velocity constant with height,
	831	!-- temperature profile with constant gradient)
[667]	832	DO i = nxlg, nxrg
	833	DO j = nysg, nyng
[1]	834	pt(:,j,i) = pt_init
	835	u(:,j,i) = u_init
	836	v(:,j,i) = v_init
	837	ENDDO
	838	ENDDO
	839	!
[2758]	840	!-- Mask topography
	841	u = MERGE( u, 0.0_wp, BTEST( wall_flags_0, 1 ) )
	842	v = MERGE( v, 0.0_wp, BTEST( wall_flags_0, 2 ) )
	843	!
[292]	844	!-- Set initial horizontal velocities at the lowest computational grid
	845	!-- levels to zero in order to avoid too small time steps caused by the
	846	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
[2758]	847	!-- in the limiting formula!).
	848	!-- Please note, in case land- or urban-surface model is used and a
	849	!-- spinup is applied, masking the lowest computational level is not
	850	!-- possible as MOST as well as energy-balance parametrizations will not
	851	!-- work with zero wind velocity.
	852	IF ( ibc_uv_b /= 1 .AND. .NOT. spinup ) THEN
[1815]	853	DO i = nxlg, nxrg
	854	DO j = nysg, nyng
[2232]	855	DO k = nzb, nzt
	856	u(k,j,i) = MERGE( u(k,j,i), 0.0_wp, &
	857	BTEST( wall_flags_0(k,j,i), 20 ) )
	858	v(k,j,i) = MERGE( v(k,j,i), 0.0_wp, &
	859	BTEST( wall_flags_0(k,j,i), 21 ) )
	860	ENDDO
[1815]	861	ENDDO
	862	ENDDO
	863	ENDIF
[1]	864
[1960]	865	IF ( humidity ) THEN
[667]	866	DO i = nxlg, nxrg
	867	DO j = nysg, nyng
[1]	868	q(:,j,i) = q_init
	869	ENDDO
	870	ENDDO
	871	ENDIF
[1960]	872
	873	IF ( passive_scalar ) THEN
	874	DO i = nxlg, nxrg
	875	DO j = nysg, nyng
	876	s(:,j,i) = s_init
	877	ENDDO
	878	ENDDO
	879	ENDIF
[1]	880
[1920]	881	!
[1]	882	!-- Compute initial temperature field and other constants used in case
	883	!-- of a sloping surface
	884	IF ( sloping_surface ) CALL init_slope
[2618]	885	!
	886	!-- Initialize surface variables, e.g. friction velocity, momentum
	887	!-- fluxes, etc.
	888	CALL init_surfaces
[3579]	889
[3987]	890	IF ( debug_output ) CALL debug_message( 'initializing with constant profiles', 'end' )
[1384]	891
[1788]	892	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
[46]	893	THEN
[1384]	894
[3987]	895	IF ( debug_output ) CALL debug_message( 'initializing by user', 'start' )
[46]	896	!
[2618]	897	!-- Pre-initialize surface variables, i.e. setting start- and end-indices
	898	!-- at each (j,i)-location. Please note, this does not supersede
	899	!-- user-defined initialization of surface quantities.
	900	CALL init_surfaces
	901	!
[46]	902	!-- Initialization will completely be done by the user
	903	CALL user_init_3d_model
	904
[3987]	905	IF ( debug_output ) CALL debug_message( 'initializing by user', 'end' )
[1384]	906
[1]	907	ENDIF
[1384]	908
[3987]	909	IF ( debug_output ) CALL debug_message( 'initializing statistics, boundary conditions, etc.', 'start' )
[1384]	910
[667]	911	!
	912	!-- Bottom boundary
	913	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
[1340]	914	u(nzb,:,:) = 0.0_wp
	915	v(nzb,:,:) = 0.0_wp
[667]	916	ENDIF
[1]	917
	918	!
[151]	919	!-- Apply channel flow boundary condition
[132]	920	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
[1340]	921	u(nzt+1,:,:) = 0.0_wp
	922	v(nzt+1,:,:) = 0.0_wp
[132]	923	ENDIF
	924
	925	!
[1]	926	!-- Calculate virtual potential temperature
[1960]	927	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
[1]	928
	929	!
[2696]	930	!-- Store initial profiles for output purposes etc.. Please note, in case of
	931	!-- initialization of u, v, w, pt, and q via output data derived from larger
	932	!-- scale models, data will not be horizontally homogeneous. Actually, a mean
	933	!-- profile should be calculated before.
[1]	934	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
	935	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
[667]	936	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
[1340]	937	hom(nzb,1,5,:) = 0.0_wp
	938	hom(nzb,1,6,:) = 0.0_wp
[1]	939	ENDIF
	940	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
	941
[75]	942	IF ( humidity ) THEN
[1]	943	!
	944	!-- Store initial profile of total water content, virtual potential
	945	!-- temperature
	946	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
	947	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
[2696]	948	!
[3040]	949	!-- Store initial profile of mixing ratio and potential
[2696]	950	!-- temperature
[3274]	951	IF ( bulk_cloud_model .OR. cloud_droplets ) THEN
[1]	952	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
	953	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
	954	ENDIF
	955	ENDIF
	956
[2696]	957	!
	958	!-- Store initial scalar profile
[1]	959	IF ( passive_scalar ) THEN
[2513]	960	hom(:,1,121,:) = SPREAD( s(:,nys,nxl), 2, statistic_regions+1 )
[1]	961	ENDIF
	962
	963	!
[1400]	964	!-- Initialize the random number generators (from numerical recipes)
	965	CALL random_function_ini
[1429]	966
[1400]	967	IF ( random_generator == 'random-parallel' ) THEN
[3241]	968	CALL init_parallel_random_generator( nx, nys, nyn, nxl, nxr )
[1400]	969	ENDIF
	970	!
[1179]	971	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
	972	!-- the reference state will be set (overwritten) in init_ocean)
	973	IF ( use_single_reference_value ) THEN
[1788]	974	IF ( .NOT. humidity ) THEN
[1179]	975	ref_state(:) = pt_reference
	976	ELSE
	977	ref_state(:) = vpt_reference
	978	ENDIF
	979	ELSE
[1788]	980	IF ( .NOT. humidity ) THEN
[1179]	981	ref_state(:) = pt_init(:)
	982	ELSE
	983	ref_state(:) = vpt(:,nys,nxl)
	984	ENDIF
	985	ENDIF
[152]	986
	987	!
[707]	988	!-- For the moment, vertical velocity is zero
[1340]	989	w = 0.0_wp
[1]	990
	991	!
	992	!-- Initialize array sums (must be defined in first call of pres)
[1340]	993	sums = 0.0_wp
[1]	994
	995	!
[707]	996	!-- In case of iterative solvers, p must get an initial value
[1575]	997	IF ( psolver(1:9) == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
[707]	998	!
[1]	999	!-- Impose vortex with vertical axis on the initial velocity profile
	1000	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
	1001	CALL init_rankine
	1002	ENDIF
	1003
	1004	!
[3035]	1005	!-- Impose temperature anomaly (advection test only) or warm air bubble
	1006	!-- close to surface
	1007	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 .OR. &
	1008	INDEX( initializing_actions, 'initialize_bubble' ) /= 0 ) THEN
[1]	1009	CALL init_pt_anomaly
	1010	ENDIF
[3035]	1011
[1]	1012	!
	1013	!-- If required, change the surface temperature at the start of the 3D run
[1340]	1014	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
[1]	1015	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
	1016	ENDIF
	1017
	1018	!
	1019	!-- If required, change the surface humidity/scalar at the start of the 3D
	1020	!-- run
[1960]	1021	IF ( humidity .AND. q_surface_initial_change /= 0.0_wp ) &
[1]	1022	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
[1960]	1023
	1024	IF ( passive_scalar .AND. s_surface_initial_change /= 0.0_wp ) &
	1025	s(nzb,:,:) = s(nzb,:,:) + s_surface_initial_change
	1026
[1]	1027
	1028	!
	1029	!-- Initialize old and new time levels.
[2696]	1030	tpt_m = 0.0_wp; tu_m = 0.0_wp; tv_m = 0.0_wp; tw_m = 0.0_wp
	1031	pt_p = pt; u_p = u; v_p = v; w_p = w
[1]	1032
[1960]	1033	IF ( humidity ) THEN
[1340]	1034	tq_m = 0.0_wp
[1]	1035	q_p = q
	1036	ENDIF
[1960]	1037
	1038	IF ( passive_scalar ) THEN
	1039	ts_m = 0.0_wp
	1040	s_p = s
	1041	ENDIF
[1]	1042
[3987]	1043	IF ( debug_output ) CALL debug_message( 'initializing statistics, boundary conditions, etc.', 'end' )
[94]	1044
[1788]	1045	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
[2232]	1046	TRIM( initializing_actions ) == 'cyclic_fill' ) &
[1]	1047	THEN
[1384]	1048
[3987]	1049	IF ( debug_output ) CALL debug_message( 'initializing in case of restart / cyclic_fill', 'start' )
[1]	1050	!
[3609]	1051	!-- Initialize surface elements and its attributes, e.g. heat- and
	1052	!-- momentumfluxes, roughness, scaling parameters. As number of surface
	1053	!-- elements might be different between runs, e.g. in case of cyclic fill,
	1054	!-- and not all surface elements are read, surface elements need to be
	1055	!-- initialized before.
	1056	!-- Please note, in case of cyclic fill, surfaces should be initialized
	1057	!-- after restart data is read, else, individual settings of surface
	1058	!-- parameters will be overwritten from data of precursor run, hence,
	1059	!-- init_surfaces is called a second time after reading the restart data.
	1060	CALL init_surfaces
	1061	!
[767]	1062	!-- When reading data for cyclic fill of 3D prerun data files, read
	1063	!-- some of the global variables from the restart file which are required
	1064	!-- for initializing the inflow
[328]	1065	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
[559]	1066
[759]	1067	DO i = 0, io_blocks-1
	1068	IF ( i == io_group ) THEN
[2894]	1069	CALL rrd_read_parts_of_global
[759]	1070	ENDIF
	1071	#if defined( __parallel )
	1072	CALL MPI_BARRIER( comm2d, ierr )
	1073	#endif
	1074	ENDDO
[328]	1075
[767]	1076	ENDIF
	1077
[151]	1078	!
[2894]	1079	!-- Read processor specific binary data from restart file
[767]	1080	DO i = 0, io_blocks-1
	1081	IF ( i == io_group ) THEN
[2894]	1082	CALL rrd_local
[767]	1083	ENDIF
	1084	#if defined( __parallel )
	1085	CALL MPI_BARRIER( comm2d, ierr )
	1086	#endif
	1087	ENDDO
[3608]	1088	!
[3609]	1089	!-- In case of cyclic fill, call init_surfaces a second time, so that
	1090	!-- surface properties such as heat fluxes are initialized as prescribed.
	1091	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) &
	1092	CALL init_surfaces
[767]	1093
[328]	1094	!
[2550]	1095	!-- In case of complex terrain and cyclic fill method as initialization,
	1096	!-- shift initial data in the vertical direction for each point in the
	1097	!-- x-y-plane depending on local surface height
	1098	IF ( complex_terrain .AND. &
	1099	TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
	1100	DO i = nxlg, nxrg
	1101	DO j = nysg, nyng
[4168]	1102	nz_u_shift = topo_top_ind(j,i,1)
	1103	nz_v_shift = topo_top_ind(j,i,2)
	1104	nz_w_shift = topo_top_ind(j,i,3)
	1105	nz_s_shift = topo_top_ind(j,i,0)
[2550]	1106
	1107	u(nz_u_shift:nzt+1,j,i) = u(0:nzt+1-nz_u_shift,j,i)
	1108
	1109	v(nz_v_shift:nzt+1,j,i) = v(0:nzt+1-nz_v_shift,j,i)
	1110
	1111	w(nz_w_shift:nzt+1,j,i) = w(0:nzt+1-nz_w_shift,j,i)
	1112
	1113	p(nz_s_shift:nzt+1,j,i) = p(0:nzt+1-nz_s_shift,j,i)
	1114	pt(nz_s_shift:nzt+1,j,i) = pt(0:nzt+1-nz_s_shift,j,i)
	1115	ENDDO
	1116	ENDDO
	1117	ENDIF
	1118	!
[767]	1119	!-- Initialization of the turbulence recycling method
[1788]	1120	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
[767]	1121	turbulent_inflow ) THEN
	1122	!
	1123	!-- First store the profiles to be used at the inflow.
	1124	!-- These profiles are the (temporally) and horizontally averaged vertical
	1125	!-- profiles from the prerun. Alternatively, prescribed profiles
	1126	!-- for u,v-components can be used.
[3288]	1127	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,1:num_mean_inflow_profiles) )
[151]	1128
[767]	1129	IF ( use_prescribed_profile_data ) THEN
	1130	mean_inflow_profiles(:,1) = u_init ! u
	1131	mean_inflow_profiles(:,2) = v_init ! v
	1132	ELSE
[328]	1133	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
	1134	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
[767]	1135	ENDIF
	1136	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
[1960]	1137	IF ( humidity ) &
	1138	mean_inflow_profiles(:,6) = hom_sum(:,41,0) ! q
	1139	IF ( passive_scalar ) &
	1140	mean_inflow_profiles(:,7) = hom_sum(:,115,0) ! s
[2550]	1141	!
	1142	!-- In case of complex terrain, determine vertical displacement at inflow
	1143	!-- boundary and adjust mean inflow profiles
	1144	IF ( complex_terrain ) THEN
	1145	IF ( nxlg <= 0 .AND. nxrg >= 0 .AND. nysg <= 0 .AND. nyng >= 0 ) THEN
[4168]	1146	nz_u_shift_l = topo_top_ind(j,i,1)
	1147	nz_v_shift_l = topo_top_ind(j,i,2)
	1148	nz_w_shift_l = topo_top_ind(j,i,3)
	1149	nz_s_shift_l = topo_top_ind(j,i,0)
[2550]	1150	ELSE
	1151	nz_u_shift_l = 0
	1152	nz_v_shift_l = 0
	1153	nz_w_shift_l = 0
	1154	nz_s_shift_l = 0
	1155	ENDIF
[151]	1156
[2550]	1157	#if defined( __parallel )
	1158	CALL MPI_ALLREDUCE(nz_u_shift_l, nz_u_shift, 1, MPI_INTEGER, &
	1159	MPI_MAX, comm2d, ierr)
	1160	CALL MPI_ALLREDUCE(nz_v_shift_l, nz_v_shift, 1, MPI_INTEGER, &
	1161	MPI_MAX, comm2d, ierr)
	1162	CALL MPI_ALLREDUCE(nz_w_shift_l, nz_w_shift, 1, MPI_INTEGER, &
	1163	MPI_MAX, comm2d, ierr)
	1164	CALL MPI_ALLREDUCE(nz_s_shift_l, nz_s_shift, 1, MPI_INTEGER, &
	1165	MPI_MAX, comm2d, ierr)
	1166	#else
	1167	nz_u_shift = nz_u_shift_l
	1168	nz_v_shift = nz_v_shift_l
	1169	nz_w_shift = nz_w_shift_l
	1170	nz_s_shift = nz_s_shift_l
	1171	#endif
	1172
	1173	mean_inflow_profiles(:,1) = 0.0_wp
	1174	mean_inflow_profiles(nz_u_shift:nzt+1,1) = hom_sum(0:nzt+1-nz_u_shift,1,0) ! u
	1175
	1176	mean_inflow_profiles(:,2) = 0.0_wp
	1177	mean_inflow_profiles(nz_v_shift:nzt+1,2) = hom_sum(0:nzt+1-nz_v_shift,2,0) ! v
	1178
	1179	mean_inflow_profiles(nz_s_shift:nzt+1,4) = hom_sum(0:nzt+1-nz_s_shift,4,0) ! pt
	1180
	1181	ENDIF
	1182
[151]	1183	!
[767]	1184	!-- If necessary, adjust the horizontal flow field to the prescribed
	1185	!-- profiles
	1186	IF ( use_prescribed_profile_data ) THEN
	1187	DO i = nxlg, nxrg
[667]	1188	DO j = nysg, nyng
[328]	1189	DO k = nzb, nzt+1
[767]	1190	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
	1191	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
[328]	1192	ENDDO
[151]	1193	ENDDO
[767]	1194	ENDDO
	1195	ENDIF
[151]	1196
	1197	!
[767]	1198	!-- Use these mean profiles at the inflow (provided that Dirichlet
	1199	!-- conditions are used)
[3182]	1200	IF ( bc_dirichlet_l ) THEN
[767]	1201	DO j = nysg, nyng
	1202	DO k = nzb, nzt+1
	1203	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
	1204	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
[1340]	1205	w(k,j,nxlg:-1) = 0.0_wp
[767]	1206	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
[1960]	1207	IF ( humidity ) &
[1615]	1208	q(k,j,nxlg:-1) = mean_inflow_profiles(k,6)
[1960]	1209	IF ( passive_scalar ) &
	1210	s(k,j,nxlg:-1) = mean_inflow_profiles(k,7)
[767]	1211	ENDDO
	1212	ENDDO
	1213	ENDIF
	1214
[151]	1215	!
[767]	1216	!-- Calculate the damping factors to be used at the inflow. For a
	1217	!-- turbulent inflow the turbulent fluctuations have to be limited
	1218	!-- vertically because otherwise the turbulent inflow layer will grow
	1219	!-- in time.
[1340]	1220	IF ( inflow_damping_height == 9999999.9_wp ) THEN
[767]	1221	!
	1222	!-- Default: use the inversion height calculated by the prerun; if
	1223	!-- this is zero, inflow_damping_height must be explicitly
	1224	!-- specified.
[1340]	1225	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
[767]	1226	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
	1227	ELSE
[1788]	1228	WRITE( message_string, * ) 'inflow_damping_height must be ', &
	1229	'explicitly specified because&the inversion height ', &
[767]	1230	'calculated by the prerun is zero.'
	1231	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
[292]	1232	ENDIF
[151]	1233
[767]	1234	ENDIF
	1235
[1340]	1236	IF ( inflow_damping_width == 9999999.9_wp ) THEN
[151]	1237	!
[767]	1238	!-- Default for the transition range: one tenth of the undamped
	1239	!-- layer
[1340]	1240	inflow_damping_width = 0.1_wp * inflow_damping_height
[151]	1241
[767]	1242	ENDIF
[151]	1243
[767]	1244	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
[151]	1245
[767]	1246	DO k = nzb, nzt+1
[151]	1247
[767]	1248	IF ( zu(k) <= inflow_damping_height ) THEN
[1340]	1249	inflow_damping_factor(k) = 1.0_wp
[996]	1250	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
[1340]	1251	inflow_damping_factor(k) = 1.0_wp - &
[996]	1252	( zu(k) - inflow_damping_height ) / &
	1253	inflow_damping_width
[767]	1254	ELSE
[1340]	1255	inflow_damping_factor(k) = 0.0_wp
[767]	1256	ENDIF
[151]	1257
[767]	1258	ENDDO
[151]	1259
[147]	1260	ENDIF
	1261
[152]	1262	!
[2696]	1263	!-- Inside buildings set velocities back to zero
[1788]	1264	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
[359]	1265	topography /= 'flat' ) THEN
	1266	!
[2696]	1267	!-- Inside buildings set velocities back to zero.
	1268	!-- Other scalars (pt, q, s, p, sa, ...) are ignored at present,
[359]	1269	!-- maybe revise later.
[1001]	1270	DO i = nxlg, nxrg
	1271	DO j = nysg, nyng
[2232]	1272	DO k = nzb, nzt
	1273	u(k,j,i) = MERGE( u(k,j,i), 0.0_wp, &
	1274	BTEST( wall_flags_0(k,j,i), 1 ) )
	1275	v(k,j,i) = MERGE( v(k,j,i), 0.0_wp, &
	1276	BTEST( wall_flags_0(k,j,i), 2 ) )
	1277	w(k,j,i) = MERGE( w(k,j,i), 0.0_wp, &
	1278	BTEST( wall_flags_0(k,j,i), 3 ) )
	1279	ENDDO
[359]	1280	ENDDO
[1001]	1281	ENDDO
[359]	1282
	1283	ENDIF
	1284
	1285	!
[1]	1286	!-- Calculate initial temperature field and other constants used in case
	1287	!-- of a sloping surface
	1288	IF ( sloping_surface ) CALL init_slope
	1289
	1290	!
	1291	!-- Initialize new time levels (only done in order to set boundary values
	1292	!-- including ghost points)
[2696]	1293	pt_p = pt; u_p = u; v_p = v; w_p = w
[1960]	1294	IF ( humidity ) THEN
[1053]	1295	q_p = q
	1296	ENDIF
[1960]	1297	IF ( passive_scalar ) s_p = s
[181]	1298	!
	1299	!-- Allthough tendency arrays are set in prognostic_equations, they have
	1300	!-- have to be predefined here because they are used (but multiplied with 0)
	1301	!-- there before they are set.
[2696]	1302	tpt_m = 0.0_wp; tu_m = 0.0_wp; tv_m = 0.0_wp; tw_m = 0.0_wp
[1960]	1303	IF ( humidity ) THEN
[1340]	1304	tq_m = 0.0_wp
[1053]	1305	ENDIF
[1960]	1306	IF ( passive_scalar ) ts_m = 0.0_wp
[181]	1307
[3987]	1308	IF ( debug_output ) CALL debug_message( 'initializing in case of restart / cyclic_fill', 'end' )
[1384]	1309
[1]	1310	ELSE
	1311	!
	1312	!-- Actually this part of the programm should not be reached
[254]	1313	message_string = 'unknown initializing problem'
	1314	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
[1]	1315	ENDIF
	1316
[151]	1317
	1318	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
[1]	1319	!
[151]	1320	!-- Initialize old timelevels needed for radiation boundary conditions
[3182]	1321	IF ( bc_radiation_l ) THEN
[151]	1322	u_m_l(:,:,:) = u(:,:,1:2)
	1323	v_m_l(:,:,:) = v(:,:,0:1)
	1324	w_m_l(:,:,:) = w(:,:,0:1)
	1325	ENDIF
[3182]	1326	IF ( bc_radiation_r ) THEN
[151]	1327	u_m_r(:,:,:) = u(:,:,nx-1:nx)
	1328	v_m_r(:,:,:) = v(:,:,nx-1:nx)
	1329	w_m_r(:,:,:) = w(:,:,nx-1:nx)
	1330	ENDIF
[3182]	1331	IF ( bc_radiation_s ) THEN
[151]	1332	u_m_s(:,:,:) = u(:,0:1,:)
	1333	v_m_s(:,:,:) = v(:,1:2,:)
	1334	w_m_s(:,:,:) = w(:,0:1,:)
	1335	ENDIF
[3182]	1336	IF ( bc_radiation_n ) THEN
[151]	1337	u_m_n(:,:,:) = u(:,ny-1:ny,:)
	1338	v_m_n(:,:,:) = v(:,ny-1:ny,:)
	1339	w_m_n(:,:,:) = w(:,ny-1:ny,:)
	1340	ENDIF
[667]	1341
[151]	1342	ENDIF
[680]	1343
[667]	1344	!
	1345	!-- Calculate the initial volume flow at the right and north boundary
[709]	1346	IF ( conserve_volume_flow ) THEN
[151]	1347
[767]	1348	IF ( use_prescribed_profile_data ) THEN
[667]	1349
[1340]	1350	volume_flow_initial_l = 0.0_wp
	1351	volume_flow_area_l = 0.0_wp
[732]	1352
[667]	1353	IF ( nxr == nx ) THEN
	1354	DO j = nys, nyn
[2232]	1355	DO k = nzb+1, nzt
[1788]	1356	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
[2232]	1357	u_init(k) * dzw(k) &
	1358	* MERGE( 1.0_wp, 0.0_wp, &
	1359	BTEST( wall_flags_0(k,j,nxr), 1 )&
	1360	)
	1361
	1362	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
	1363	* MERGE( 1.0_wp, 0.0_wp, &
	1364	BTEST( wall_flags_0(k,j,nxr), 1 )&
	1365	)
[767]	1366	ENDDO
	1367	ENDDO
	1368	ENDIF
	1369
	1370	IF ( nyn == ny ) THEN
	1371	DO i = nxl, nxr
[2232]	1372	DO k = nzb+1, nzt
	1373	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	1374	v_init(k) * dzw(k) &
	1375	* MERGE( 1.0_wp, 0.0_wp, &
	1376	BTEST( wall_flags_0(k,nyn,i), 2 )&
	1377	)
	1378	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
	1379	* MERGE( 1.0_wp, 0.0_wp, &
	1380	BTEST( wall_flags_0(k,nyn,i), 2 )&
	1381	)
[767]	1382	ENDDO
	1383	ENDDO
	1384	ENDIF
	1385
	1386	#if defined( __parallel )
	1387	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
	1388	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	1389	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
	1390	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	1391
	1392	#else
	1393	volume_flow_initial = volume_flow_initial_l
	1394	volume_flow_area = volume_flow_area_l
	1395	#endif
	1396
	1397	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
	1398
[1340]	1399	volume_flow_initial_l = 0.0_wp
	1400	volume_flow_area_l = 0.0_wp
[767]	1401
	1402	IF ( nxr == nx ) THEN
	1403	DO j = nys, nyn
[2232]	1404	DO k = nzb+1, nzt
[1788]	1405	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
[2232]	1406	hom_sum(k,1,0) * dzw(k) &
	1407	* MERGE( 1.0_wp, 0.0_wp, &
	1408	BTEST( wall_flags_0(k,j,nx), 1 ) &
	1409	)
	1410	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
	1411	* MERGE( 1.0_wp, 0.0_wp, &
	1412	BTEST( wall_flags_0(k,j,nx), 1 ) &
	1413	)
[667]	1414	ENDDO
	1415	ENDDO
	1416	ENDIF
	1417
	1418	IF ( nyn == ny ) THEN
	1419	DO i = nxl, nxr
[2232]	1420	DO k = nzb+1, nzt
[1788]	1421	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
[2232]	1422	hom_sum(k,2,0) * dzw(k) &
	1423	* MERGE( 1.0_wp, 0.0_wp, &
	1424	BTEST( wall_flags_0(k,ny,i), 2 ) &
	1425	)
	1426	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
	1427	* MERGE( 1.0_wp, 0.0_wp, &
	1428	BTEST( wall_flags_0(k,ny,i), 2 ) &
	1429	)
[667]	1430	ENDDO
	1431	ENDDO
	1432	ENDIF
	1433
[732]	1434	#if defined( __parallel )
	1435	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
	1436	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	1437	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
	1438	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	1439
	1440	#else
	1441	volume_flow_initial = volume_flow_initial_l
	1442	volume_flow_area = volume_flow_area_l
	1443	#endif
	1444
[667]	1445	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
	1446
[1340]	1447	volume_flow_initial_l = 0.0_wp
	1448	volume_flow_area_l = 0.0_wp
[732]	1449
[667]	1450	IF ( nxr == nx ) THEN
	1451	DO j = nys, nyn
[2232]	1452	DO k = nzb+1, nzt
	1453	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	1454	u(k,j,nx) * dzw(k) &
	1455	* MERGE( 1.0_wp, 0.0_wp, &
	1456	BTEST( wall_flags_0(k,j,nx), 1 ) &
	1457	)
	1458	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
	1459	* MERGE( 1.0_wp, 0.0_wp, &
	1460	BTEST( wall_flags_0(k,j,nx), 1 ) &
	1461	)
[667]	1462	ENDDO
	1463	ENDDO
	1464	ENDIF
	1465
	1466	IF ( nyn == ny ) THEN
	1467	DO i = nxl, nxr
[2232]	1468	DO k = nzb+1, nzt
[1788]	1469	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
[2232]	1470	v(k,ny,i) * dzw(k) &
	1471	* MERGE( 1.0_wp, 0.0_wp, &
	1472	BTEST( wall_flags_0(k,ny,i), 2 ) &
	1473	)
	1474	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
	1475	* MERGE( 1.0_wp, 0.0_wp, &
	1476	BTEST( wall_flags_0(k,ny,i), 2 ) &
	1477	)
[667]	1478	ENDDO
	1479	ENDDO
	1480	ENDIF
	1481
	1482	#if defined( __parallel )
[732]	1483	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
	1484	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	1485	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
	1486	2, MPI_REAL, MPI_SUM, comm2d, ierr )
[667]	1487
	1488	#else
[732]	1489	volume_flow_initial = volume_flow_initial_l
	1490	volume_flow_area = volume_flow_area_l
[667]	1491	#endif
	1492
[732]	1493	ENDIF
	1494
[151]	1495	!
[709]	1496	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
	1497	!-- from u\|v_bulk instead
[680]	1498	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
	1499	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
	1500	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
	1501	ENDIF
[667]	1502
[680]	1503	ENDIF
[2232]	1504	!
[4150]	1505	!-- In the following, surface properties can be further initialized with
	1506	!-- input from static driver file.
	1507	!-- At the moment this affects only default surfaces. For example,
	1508	!-- roughness length or sensible / latent heat fluxes can be initialized
	1509	!-- heterogeneously for default surfaces. Therefore, a generic routine
	1510	!-- from netcdf_data_input_mod is called to read a 2D array.
	1511	IF ( input_pids_static ) THEN
	1512	!
[4151]	1513	!-- Allocate memory for possible static input
	1514	ALLOCATE( tmp_2d%var(nys:nyn,nxl:nxr) )
	1515	tmp_2d%var = 0.0_wp
	1516	!
[4150]	1517	!-- Open the static input file
[4151]	1518	#if defined( __netcdf )
[4150]	1519	CALL open_read_file( TRIM( input_file_static ) // &
	1520	TRIM( coupling_char ), &
	1521	pids_static_id )
	1522
	1523	CALL inquire_num_variables( pids_static_id, num_vars_pids_static )
	1524	!
	1525	!-- Allocate memory to store variable names and read them
	1526	ALLOCATE( vars_pids_static(1:num_vars_pids_static) )
	1527	CALL inquire_variable_names( pids_static_id, vars_pids_static )
	1528	!
	1529	!-- Input roughness length.
	1530	IF ( check_existence( vars_pids_static, 'z0' ) ) THEN
	1531	!
	1532	!-- Read _FillValue attribute
	1533	CALL get_attribute( pids_static_id, char_fill, tmp_2d%fill, &
	1534	.FALSE., 'z0' )
	1535	!
	1536	!-- Read variable
	1537	CALL get_variable( pids_static_id, 'z0', tmp_2d%var, &
	1538	nxl, nxr, nys, nyn )
	1539	!
	1540	!-- Initialize roughness length. Note, z0 will be only initialized at
	1541	!-- default-type surfaces. At natural or urban z0 is implicitly
	1542	!-- initialized bythe respective parameter lists.
	1543	!-- Initialize horizontal surface elements.
	1544	CALL init_single_surface_properties( surf_def_h(0)%z0, &
	1545	tmp_2d%var, &
	1546	surf_def_h(0)%ns, &
	1547	tmp_2d%fill, &
	1548	surf_def_h(0)%i, &
	1549	surf_def_h(0)%j )
	1550	!
	1551	!-- Initialize roughness also at vertical surface elements.
	1552	!-- Note, the actual 2D input arrays are only defined on the
	1553	!-- subdomain. Therefore, pass the index arrays with their respective
	1554	!-- offset values.
	1555	DO l = 0, 3
	1556	CALL init_single_surface_properties( &
	1557	surf_def_v(l)%z0, &
	1558	tmp_2d%var, &
	1559	surf_def_v(l)%ns, &
	1560	tmp_2d%fill, &
	1561	surf_def_v(l)%i + surf_def_v(l)%ioff, &
	1562	surf_def_v(l)%j + surf_def_v(l)%joff )
	1563	ENDDO
	1564
	1565	ENDIF
	1566	!
	1567	!-- Additional variables, e.g. shf, qsws, etc, can be initialized the
	1568	!-- same way.
	1569
	1570	!
	1571	!-- Finally, close the input file.
	1572	CALL close_input_file( pids_static_id )
[4151]	1573	#endif
	1574	DEALLOCATE( tmp_2d%var )
[4150]	1575	ENDIF
	1576	!
[2618]	1577	!-- Finally, if random_heatflux is set, disturb shf at horizontal
	1578	!-- surfaces. Actually, this should be done in surface_mod, where all other
	1579	!-- initializations of surface quantities are done. However, this
	1580	!-- would create a ring dependency, hence, it is done here. Maybe delete
	1581	!-- disturb_heatflux and tranfer the respective code directly into the
	1582	!-- initialization in surface_mod.
[2232]	1583	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
	1584	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
[2618]	1585
[2232]	1586	IF ( use_surface_fluxes .AND. constant_heatflux .AND. &
	1587	random_heatflux ) THEN
	1588	IF ( surf_def_h(0)%ns >= 1 ) CALL disturb_heatflux( surf_def_h(0) )
	1589	IF ( surf_lsm_h%ns >= 1 ) CALL disturb_heatflux( surf_lsm_h )
	1590	IF ( surf_usm_h%ns >= 1 ) CALL disturb_heatflux( surf_usm_h )
	1591	ENDIF
	1592	ENDIF
[680]	1593
[787]	1594	!
[3747]	1595	!-- Compute total sum of grid points and the mean surface level height for each
	1596	!-- statistic region. These are mainly used for horizontal averaging of
	1597	!-- turbulence statistics.
[2696]	1598	!-- ngp_2dh: number of grid points of a horizontal cross section through the
[3747]	1599	!-- respective statistic region
	1600	!-- ngp_3d: number of grid points of the respective statistic region
[2696]	1601	ngp_2dh_outer_l = 0
	1602	ngp_2dh_outer = 0
	1603	ngp_2dh_s_inner_l = 0
	1604	ngp_2dh_s_inner = 0
	1605	ngp_2dh_l = 0
	1606	ngp_2dh = 0
	1607	ngp_3d_inner_l = 0.0_wp
	1608	ngp_3d_inner = 0
	1609	ngp_3d = 0
	1610	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
	1611
	1612	mean_surface_level_height = 0.0_wp
	1613	mean_surface_level_height_l = 0.0_wp
	1614	!
	1615	!-- To do: New concept for these non-topography grid points!
	1616	DO sr = 0, statistic_regions
	1617	DO i = nxl, nxr
	1618	DO j = nys, nyn
	1619	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
	1620	!
	1621	!-- All xy-grid points
	1622	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
	1623	!
	1624	!-- Determine mean surface-level height. In case of downward-
	1625	!-- facing walls are present, more than one surface level exist.
	1626	!-- In this case, use the lowest surface-level height.
	1627	IF ( surf_def_h(0)%start_index(j,i) <= &
	1628	surf_def_h(0)%end_index(j,i) ) THEN
	1629	m = surf_def_h(0)%start_index(j,i)
	1630	k = surf_def_h(0)%k(m)
	1631	mean_surface_level_height_l(sr) = &
	1632	mean_surface_level_height_l(sr) + zw(k-1)
	1633	ENDIF
	1634	IF ( surf_lsm_h%start_index(j,i) <= &
	1635	surf_lsm_h%end_index(j,i) ) THEN
	1636	m = surf_lsm_h%start_index(j,i)
	1637	k = surf_lsm_h%k(m)
	1638	mean_surface_level_height_l(sr) = &
	1639	mean_surface_level_height_l(sr) + zw(k-1)
	1640	ENDIF
	1641	IF ( surf_usm_h%start_index(j,i) <= &
	1642	surf_usm_h%end_index(j,i) ) THEN
	1643	m = surf_usm_h%start_index(j,i)
	1644	k = surf_usm_h%k(m)
	1645	mean_surface_level_height_l(sr) = &
	1646	mean_surface_level_height_l(sr) + zw(k-1)
	1647	ENDIF
	1648
	1649	k_surf = k - 1
	1650
	1651	DO k = nzb, nzt+1
	1652	!
	1653	!-- xy-grid points above topography
	1654	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + &
	1655	MERGE( 1, 0, BTEST( wall_flags_0(k,j,i), 24 ) )
	1656
	1657	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + &
	1658	MERGE( 1, 0, BTEST( wall_flags_0(k,j,i), 22 ) )
	1659
	1660	ENDDO
	1661	!
	1662	!-- All grid points of the total domain above topography
	1663	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + ( nz - k_surf + 2 )
	1664
	1665
	1666
	1667	ENDIF
	1668	ENDDO
	1669	ENDDO
	1670	ENDDO
[3747]	1671
[2696]	1672	sr = statistic_regions + 1
	1673	#if defined( __parallel )
	1674	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
	1675	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
	1676	comm2d, ierr )
	1677	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
	1678	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
	1679	MPI_INTEGER, MPI_SUM, comm2d, ierr )
	1680	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
	1681	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
	1682	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
	1683	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
	1684	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
	1685	MPI_SUM, comm2d, ierr )
	1686	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
	1687	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
	1688	CALL MPI_ALLREDUCE( mean_surface_level_height_l(0), &
	1689	mean_surface_level_height(0), sr, MPI_REAL, &
	1690	MPI_SUM, comm2d, ierr )
	1691	mean_surface_level_height = mean_surface_level_height / REAL( ngp_2dh )
	1692	#else
	1693	ngp_2dh = ngp_2dh_l
	1694	ngp_2dh_outer = ngp_2dh_outer_l
	1695	ngp_2dh_s_inner = ngp_2dh_s_inner_l
	1696	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
	1697	mean_surface_level_height = mean_surface_level_height_l / REAL( ngp_2dh_l )
	1698	#endif
	1699
	1700	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
	1701	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
	1702
	1703	!
	1704	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
	1705	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
	1706	!-- the respective subdomain lie below the surface topography
	1707	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
	1708	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
	1709	ngp_3d_inner(:) )
	1710	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
	1711
	1712	DEALLOCATE( mean_surface_level_height_l, ngp_2dh_l, ngp_2dh_outer_l, &
	1713	ngp_3d_inner_l, ngp_3d_inner_tmp )
	1714	!
[2232]	1715	!-- Initialize surface forcing corresponding to large-scale forcing. Therein,
	1716	!-- initialize heat-fluxes, etc. via datatype. Revise it later!
	1717	IF ( large_scale_forcing .AND. lsf_surf ) THEN
	1718	IF ( use_surface_fluxes .AND. constant_heatflux ) THEN
	1719	CALL ls_forcing_surf ( simulated_time )
	1720	ENDIF
	1721	ENDIF
	1722	!
[3347]	1723	!-- Initializae 3D offline nesting in COSMO model and read data from
	1724	!-- external NetCDF file.
	1725	IF ( nesting_offline ) CALL nesting_offl_init
	1726	!
[787]	1727	!-- Initialize quantities for special advections schemes
	1728	CALL init_advec
[680]	1729
[667]	1730	!
[680]	1731	!-- Impose random perturbation on the horizontal velocity field and then
	1732	!-- remove the divergences from the velocity field at the initial stage
[1788]	1733	IF ( create_disturbances .AND. disturbance_energy_limit /= 0.0_wp .AND. &
	1734	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
[680]	1735	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
	1736
[3987]	1737	IF ( debug_output ) CALL debug_message( 'creating disturbances + applying pressure solver', 'start' )
[3849]	1738	!
	1739	!-- Needed for both disturb_field and pres
	1740	!$ACC DATA &
	1741	!$ACC CREATE(tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1742	!$ACC COPY(u(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1743	!$ACC COPY(v(nzb:nzt+1,nysg:nyng,nxlg:nxrg))
	1744
[2232]	1745	CALL disturb_field( 'u', tend, u )
	1746	CALL disturb_field( 'v', tend, v )
[1384]	1747
[3849]	1748	!$ACC DATA &
	1749	!$ACC CREATE(d(nzb+1:nzt,nys:nyn,nxl:nxr)) &
	1750	!$ACC COPY(w(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1751	!$ACC COPY(p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1752	!$ACC COPYIN(rho_air(nzb:nzt+1), rho_air_zw(nzb:nzt+1)) &
	1753	!$ACC COPYIN(ddzu(1:nzt+1), ddzw(1:nzt+1)) &
	1754	!$ACC COPYIN(wall_flags_0(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1755	!$ACC COPYIN(bc_h(0:1)) &
	1756	!$ACC COPYIN(bc_h(0)%i(1:bc_h(0)%ns)) &
	1757	!$ACC COPYIN(bc_h(0)%j(1:bc_h(0)%ns)) &
	1758	!$ACC COPYIN(bc_h(0)%k(1:bc_h(0)%ns)) &
	1759	!$ACC COPYIN(bc_h(1)%i(1:bc_h(1)%ns)) &
	1760	!$ACC COPYIN(bc_h(1)%j(1:bc_h(1)%ns)) &
	1761	!$ACC COPYIN(bc_h(1)%k(1:bc_h(1)%ns))
	1762
[680]	1763	n_sor = nsor_ini
	1764	CALL pres
	1765	n_sor = nsor
[1384]	1766
[3849]	1767	!$ACC END DATA
	1768	!$ACC END DATA
	1769
[3987]	1770	IF ( debug_output ) CALL debug_message( 'creating disturbances + applying pressure solver', 'end' )
	1771
[680]	1772	ENDIF
	1773
[3294]	1774	IF ( .NOT. ocean_mode ) THEN
[3274]	1775
	1776	ALLOCATE( hyp(nzb:nzt+1) )
	1777	ALLOCATE( d_exner(nzb:nzt+1) )
	1778	ALLOCATE( exner(nzb:nzt+1) )
	1779	ALLOCATE( hyrho(nzb:nzt+1) )
[1849]	1780	!
[3274]	1781	!-- Check temperature in case of too large domain height
	1782	DO k = nzb, nzt+1
	1783	IF ( ( pt_surface * exner_function(surface_pressure * 100.0_wp) - g/c_p * zu(k) ) < 0.0_wp ) THEN
	1784	WRITE( message_string, * ) 'absolute temperature < 0.0 at zu(', k, &
	1785	') = ', zu(k)
[3685]	1786	CALL message( 'init_3d_model', 'PA0142', 1, 2, 0, 6, 0 )
[3274]	1787	ENDIF
	1788	ENDDO
	1789
	1790	!
	1791	!-- Calculate vertical profile of the hydrostatic pressure (hyp)
	1792	hyp = barometric_formula(zu, pt_surface * exner_function(surface_pressure * 100.0_wp), surface_pressure * 100.0_wp)
	1793	d_exner = exner_function_invers(hyp)
	1794	exner = 1.0_wp / exner_function_invers(hyp)
	1795	hyrho = ideal_gas_law_rho_pt(hyp, pt_init)
	1796	!
	1797	!-- Compute reference density
	1798	rho_surface = ideal_gas_law_rho(surface_pressure * 100.0_wp, pt_surface * exner_function(surface_pressure * 100.0_wp))
	1799
[96]	1800	ENDIF
[1]	1801
	1802	!
	1803	!-- If required, initialize particles
[3159]	1804	IF ( agents_active ) CALL mas_init
	1805	!
[3937]	1806	!-- Initialization of synthetic turbulence generator
	1807	IF ( use_syn_turb_gen ) CALL stg_init
[2696]	1808	!
[3685]	1809	!-- Initializing actions for all other modules
	1810	CALL module_interface_init
[2696]	1811	!
[3685]	1812	!-- Initialize surface layer (done after LSM as roughness length are required
	1813	!-- for initialization
	1814	IF ( constant_flux_layer ) CALL init_surface_layer_fluxes
[2977]	1815	!
[3421]	1816	!-- Initialize surface data output
[3685]	1817	IF ( surface_output ) CALL surface_data_output_init
[3472]	1818	!
[673]	1819	!-- Initialize the ws-scheme.
[3448]	1820	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
[3711]	1821	!
	1822	!-- Perform post-initializing checks for all other modules
	1823	CALL module_interface_init_checks
[1]	1824
	1825	!
[709]	1826	!-- Setting weighting factors for calculation of perturbation pressure
[1762]	1827	!-- and turbulent quantities from the RK substeps
[709]	1828	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
	1829
[1322]	1830	weight_substep(1) = 1._wp/6._wp
	1831	weight_substep(2) = 3._wp/10._wp
	1832	weight_substep(3) = 8._wp/15._wp
[709]	1833
[1322]	1834	weight_pres(1) = 1._wp/3._wp
	1835	weight_pres(2) = 5._wp/12._wp
	1836	weight_pres(3) = 1._wp/4._wp
[709]	1837
	1838	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
	1839
[1322]	1840	weight_substep(1) = 1._wp/2._wp
	1841	weight_substep(2) = 1._wp/2._wp
[673]	1842
[1322]	1843	weight_pres(1) = 1._wp/2._wp
	1844	weight_pres(2) = 1._wp/2._wp
[709]	1845
[1001]	1846	ELSE ! for Euler-method
[709]	1847
[1340]	1848	weight_substep(1) = 1.0_wp
	1849	weight_pres(1) = 1.0_wp
[709]	1850
[673]	1851	ENDIF
	1852
	1853	!
[1]	1854	!-- Initialize Rayleigh damping factors
[1340]	1855	rdf = 0.0_wp
	1856	rdf_sc = 0.0_wp
	1857	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
[3294]	1858
	1859	IF ( .NOT. ocean_mode ) THEN
[108]	1860	DO k = nzb+1, nzt
	1861	IF ( zu(k) >= rayleigh_damping_height ) THEN
[1788]	1862	rdf(k) = rayleigh_damping_factor * &
[1340]	1863	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
[1788]	1864	/ ( zu(nzt) - rayleigh_damping_height ) ) &
[1]	1865	)**2
[108]	1866	ENDIF
	1867	ENDDO
	1868	ELSE
[3294]	1869	!
	1870	!-- In ocean mode, rayleigh damping is applied in the lower part of the
	1871	!-- model domain
[108]	1872	DO k = nzt, nzb+1, -1
	1873	IF ( zu(k) <= rayleigh_damping_height ) THEN
[1788]	1874	rdf(k) = rayleigh_damping_factor * &
[1340]	1875	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
[1788]	1876	/ ( rayleigh_damping_height - zu(nzb+1) ) ) &
[108]	1877	)**2
	1878	ENDIF
	1879	ENDDO
	1880	ENDIF
[3294]	1881
[1]	1882	ENDIF
[785]	1883	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
[1]	1884
	1885	!
[240]	1886	!-- Initialize the starting level and the vertical smoothing factor used for
	1887	!-- the external pressure gradient
[1340]	1888	dp_smooth_factor = 1.0_wp
[240]	1889	IF ( dp_external ) THEN
	1890	!
	1891	!-- Set the starting level dp_level_ind_b only if it has not been set before
	1892	!-- (e.g. in init_grid).
	1893	IF ( dp_level_ind_b == 0 ) THEN
	1894	ind_array = MINLOC( ABS( dp_level_b - zu ) )
	1895	dp_level_ind_b = ind_array(1) - 1 + nzb
	1896	! MINLOC uses lower array bound 1
	1897	ENDIF
	1898	IF ( dp_smooth ) THEN
[1340]	1899	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
[240]	1900	DO k = dp_level_ind_b+1, nzt
[1340]	1901	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
	1902	( REAL( k - dp_level_ind_b, KIND=wp ) / &
	1903	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
[240]	1904	ENDDO
	1905	ENDIF
	1906	ENDIF
	1907
	1908	!
[978]	1909	!-- Initialize damping zone for the potential temperature in case of
	1910	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
	1911	!-- at the inflow boundary and decreases to zero at pt_damping_width.
[1340]	1912	ptdf_x = 0.0_wp
	1913	ptdf_y = 0.0_wp
[1159]	1914	IF ( bc_lr_dirrad ) THEN
[996]	1915	DO i = nxl, nxr
[978]	1916	IF ( ( i * dx ) < pt_damping_width ) THEN
[1340]	1917	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
	1918	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
[1788]	1919	REAL( pt_damping_width, KIND=wp ) ) ) )**2
[73]	1920	ENDIF
	1921	ENDDO
[1159]	1922	ELSEIF ( bc_lr_raddir ) THEN
[996]	1923	DO i = nxl, nxr
[978]	1924	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
[1322]	1925	ptdf_x(i) = pt_damping_factor * &
[1340]	1926	SIN( pi * 0.5_wp * &
	1927	( ( i - nx ) * dx + pt_damping_width ) / &
	1928	REAL( pt_damping_width, KIND=wp ) )**2
[73]	1929	ENDIF
[978]	1930	ENDDO
[1159]	1931	ELSEIF ( bc_ns_dirrad ) THEN
[996]	1932	DO j = nys, nyn
[978]	1933	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
[1322]	1934	ptdf_y(j) = pt_damping_factor * &
[1340]	1935	SIN( pi * 0.5_wp * &
	1936	( ( j - ny ) * dy + pt_damping_width ) / &
	1937	REAL( pt_damping_width, KIND=wp ) )**2
[1]	1938	ENDIF
[978]	1939	ENDDO
[1159]	1940	ELSEIF ( bc_ns_raddir ) THEN
[996]	1941	DO j = nys, nyn
[978]	1942	IF ( ( j * dy ) < pt_damping_width ) THEN
[1322]	1943	ptdf_y(j) = pt_damping_factor * &
[1340]	1944	SIN( pi * 0.5_wp * &
	1945	( pt_damping_width - j * dy ) / &
	1946	REAL( pt_damping_width, KIND=wp ) )**2
[1]	1947	ENDIF
[73]	1948	ENDDO
[1]	1949	ENDIF
[51]	1950
[1]	1951	!
	1952	!-- Input binary data file is not needed anymore. This line must be placed
	1953	!-- after call of user_init!
	1954	CALL close_file( 13 )
[2934]	1955	!
	1956	!-- In case of nesting, put an barrier to assure that all parent and child
	1957	!-- domains finished initialization.
	1958	#if defined( __parallel )
	1959	IF ( nested_run ) CALL MPI_BARRIER( MPI_COMM_WORLD, ierr )
	1960	#endif
[1]	1961
[2934]	1962
[3987]	1963	CALL location_message( 'model initialization', 'finished' )
[1]	1964
	1965	END SUBROUTINE init_3d_model

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source: palm/trunk/SOURCE/init_3d_model.f90 @ 4180

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