Home

Context Navigation

init_3d_model.f90 @ 4782

Last change on this file since 4782 was 4680, checked in by gronemeier, 4 years ago

Add option to fix date and time of the simulation; renamed set_reference_date_time to init_date_time (palm_date_time_mod, init_3d_model, modules, parin)

Property svn:keywords set to Id

Property svn:mergeinfo set to (toggle deleted branches)

/palm/branches/chemistry/SOURCE/init_3d_model.f90	2047-3190,3218-3297
/palm/branches/rans/SOURCE/init_3d_model.f90	2078-3128
/palm/branches/resler/SOURCE/init_3d_model.f90	2023-4492
/palm/branches/salsa/SOURCE/init_3d_model.f90	2503-3581
/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

File size: 85.0 KB

Rev	Line
[1682]	1	!> @file init_3d_model.f90
[4648]	2	!--------------------------------------------------------------------------------------------------!
[2696]	3	! This file is part of the PALM model system.
[1036]	4	!
[4648]	5	! PALM is free software: you can redistribute it and/or modify it under the terms of the GNU General
	6	! Public License as published by the Free Software Foundation, either version 3 of the License, or
	7	! (at your option) any later version.
[1036]	8	!
[4648]	9	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
	10	! implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
	11	! Public License for more details.
[1036]	12	!
[4648]	13	! You should have received a copy of the GNU General Public License along with PALM. If not, see
	14	! <http://www.gnu.org/licenses/>.
[1036]	15	!
[4360]	16	! Copyright 1997-2020 Leibniz Universitaet Hannover
[4648]	17	!--------------------------------------------------------------------------------------------------!
[1036]	18	!
[254]	19	! Current revisions:
[732]	20	! ------------------
[4648]	21	!
	22	!
[2233]	23	! Former revisions:
	24	! -----------------
	25	! $Id: init_3d_model.f90 4680 2020-09-16 10:20:34Z gronemeier $
[4680]	26	! Add option to fix date or time of the simulation
	27	!
	28	! 4671 2020-09-09 20:27:58Z pavelkrc
[4671]	29	! Implementation of downward facing USM and LSM surfaces
	30	!
	31	! 4648 2020-08-25 07:52:08Z raasch
[4648]	32	! file re-formatted to follow the PALM coding standard
	33	!
	34	! 4548 2020-05-28 19:36:45Z suehring
[4548]	35	! Bugfix, move call for lsf_forcing_surf after lsf_init is called
[4648]	36	!
[4548]	37	! 4514 2020-04-30 16:29:59Z suehring
[4648]	38	! Add possibility to initialize surface sensible and latent heat fluxes via a static driver.
	39	!
[4514]	40	! 4493 2020-04-10 09:49:43Z pavelkrc
[4648]	41	! Overwrite u_init, v_init, pt_init, q_init and s_init with hom for all cyclic_fill-cases, not only
	42	! for turbulent_inflow = .TRUE.
	43	!
[4365]	44	! 4360 2020-01-07 11:25:50Z suehring
[4648]	45	! Introduction of wall_flags_total_0, which currently sets bits based on static topography
	46	! information used in wall_flags_static_0
	47	!
[4346]	48	! 4329 2019-12-10 15:46:36Z motisi
[4329]	49	! Renamed wall_flags_0 to wall_flags_static_0
[4648]	50	!
[4329]	51	! 4286 2019-10-30 16:01:14Z resler
[4227]	52	! implement new palm_date_time_mod
[4648]	53	!
[4227]	54	! 4223 2019-09-10 09:20:47Z gronemeier
[4648]	55	! Deallocate temporary string array since it may be re-used to read different input data in other
	56	! modules
	57	!
[4187]	58	! 4186 2019-08-23 16:06:14Z suehring
[4648]	59	! Design change, use variables defined in netcdf_data_input_mod to read netcd variables rather than
	60	! define local ones.
	61	!
[4186]	62	! 4185 2019-08-23 13:49:38Z oliver.maas
[4185]	63	! For initializing_actions = ' cyclic_fill':
[4648]	64	! Overwrite u_init, v_init, pt_init, q_init and s_init with the (temporally) and horizontally
	65	! averaged vertical profiles from the end of the prerun, because these profiles shall be used as the
	66	! basic state for the rayleigh damping and the pt_damping.
	67	!
[4185]	68	! 4182 2019-08-22 15:20:23Z scharf
[4182]	69	! Corrected "Former revisions" section
[4648]	70	!
[4182]	71	! 4168 2019-08-16 13:50:17Z suehring
[4168]	72	! Replace function get_topography_top_index by topo_top_ind
[4648]	73	!
[4168]	74	! 4151 2019-08-09 08:24:30Z suehring
[4151]	75	! Add netcdf directive around input calls (fix for last commit)
[4648]	76	!
[4151]	77	! 4150 2019-08-08 20:00:47Z suehring
[4648]	78	! Input of additional surface variables independent on land- or urban-surface model
	79	!
[4150]	80	! 4131 2019-08-02 11:06:18Z monakurppa
[4131]	81	! Allocate sums and sums_l to allow profile output for salsa variables.
[4648]	82	!
[4131]	83	! 4130 2019-08-01 13:04:13Z suehring
[4648]	84	! Effectively reduce 3D initialization to 1D initial profiles. This is because 3D initialization
	85	! produces structures in the w-component that are correlated with the processor grid for some
	86	! unknown reason
	87	!
[4130]	88	! 4090 2019-07-11 15:06:47Z Giersch
[4090]	89	! Unused variables removed
[4648]	90	!
[4090]	91	! 4088 2019-07-11 13:57:56Z Giersch
[4088]	92	! Pressure and density profile calculations revised using basic functions
[4648]	93	!
[4088]	94	! 4048 2019-06-21 21:00:21Z knoop
[4028]	95	! Further modularization of particle code components
[4648]	96	!
[4028]	97	! 4017 2019-06-06 12:16:46Z schwenkel
[4648]	98	! Convert most location messages to debug messages to reduce output in job logfile to a minimum
	99	!
[3939]	100	! unused variable removed
[4648]	101	!
[3939]	102	! 3937 2019-04-29 15:09:07Z suehring
[4648]	103	! Move initialization of synthetic turbulence generator behind initialization of offline nesting.
	104	! Remove call for stg_adjust, as this is now already done in stg_init.
	105	!
[3937]	106	! 3900 2019-04-16 15:17:43Z suehring
[3900]	107	! Fix problem with LOD = 2 initialization
[4648]	108	!
[3900]	109	! 3885 2019-04-11 11:29:34Z kanani
[4648]	110	! Changes related to global restructuring of location messages and introduction of additional debug
	111	! messages
	112	!
[3885]	113	! 3849 2019-04-01 16:35:16Z knoop
[3747]	114	! Move initialization of rmask before initializing user_init_arrays
[4648]	115	!
[3747]	116	! 3711 2019-01-31 13:44:26Z knoop
[3711]	117	! Introduced module_interface_init_checks for post-init checks in modules
[4648]	118	!
[3711]	119	! 3700 2019-01-26 17:03:42Z knoop
[3685]	120	! Some interface calls moved to module_interface + cleanup
[4648]	121	!
[3685]	122	! 3648 2019-01-02 16:35:46Z suehring
[3648]	123	! Rename subroutines for surface-data output
[3569]	124	!
[4182]	125	! Revision 1.1 1998/03/09 16:22:22 raasch
	126	! Initial revision
	127	!
	128	!
[1]	129	! Description:
	130	! ------------
[1682]	131	!> Allocation of arrays and initialization of the 3D model via
	132	!> a) pre-run the 1D model
	133	!> or
	134	!> b) pre-set constant linear profiles
	135	!> or
	136	!> c) read values of a previous run
[4648]	137	!--------------------------------------------------------------------------------------------------!
[1682]	138	SUBROUTINE init_3d_model
[1]	139
[3298]	140
[667]	141	USE advec_ws
[1320]	142
[1]	143	USE arrays_3d
[1849]	144
[4648]	145	USE basic_constants_and_equations_mod, &
	146	ONLY: barometric_formula, c_p, exner_function, exner_function_invers, g, &
	147	ideal_gas_law_rho, ideal_gas_law_rho_pt, l_v, pi
[3274]	148
[4648]	149	USE bulk_cloud_model_mod, &
[3685]	150	ONLY: bulk_cloud_model
[3274]	151
[4648]	152	USE chem_modules, &
[3685]	153	ONLY: max_pr_cs ! ToDo: this dependency needs to be removed cause it is ugly #new_dom
[3298]	154
[1]	155	USE control_parameters
[3298]	156
[4648]	157	USE grid_variables, &
[2037]	158	ONLY: dx, dy, ddx2_mg, ddy2_mg
[2817]	159
[1]	160	USE indices
[3469]	161
[1320]	162	USE kinds
[4648]	163
	164	USE lsf_nudging_mod, &
[3685]	165	ONLY: ls_forcing_surf
[1849]	166
[4648]	167	USE model_1d_mod, &
[3241]	168	ONLY: init_1d_model, l1d, u1d, v1d
[2338]	169
[4648]	170	USE module_interface, &
	171	ONLY: module_interface_init_arrays, &
	172	module_interface_init, &
[3711]	173	module_interface_init_checks
[3685]	174
[4648]	175	USE multi_agent_system_mod, &
[3159]	176	ONLY: agents_active, mas_init
	177
[4648]	178	USE netcdf_interface, &
[3700]	179	ONLY: dots_max
[2696]	180
[4648]	181	USE netcdf_data_input_mod, &
	182	ONLY: char_fill, &
	183	check_existence, &
	184	close_input_file, &
	185	get_attribute, &
	186	get_variable, &
	187	init_3d, &
	188	input_pids_static, &
	189	inquire_num_variables, &
	190	inquire_variable_names, &
	191	input_file_static, &
	192	netcdf_data_input_init_3d, &
	193	num_var_pids, &
	194	open_read_file, &
	195	pids_id, &
	196	real_2d, &
[4186]	197	vars_pids
[4648]	198
	199	USE nesting_offl_mod, &
[3347]	200	ONLY: nesting_offl_init
[3294]	201
[4648]	202	USE palm_date_time_mod, &
[4680]	203	ONLY: init_date_time
[4227]	204
[1]	205	USE pegrid
[3298]	206
[3524]	207	#if defined( __parallel )
[4648]	208	USE pmc_interface, &
[2934]	209	ONLY: nested_run
[3524]	210	#endif
[2934]	211
[4648]	212	USE random_function_mod
[3685]	213
[4648]	214	USE random_generator_parallel, &
[2172]	215	ONLY: init_parallel_random_generator
[3685]	216
[4648]	217	USE read_restart_data_mod, &
	218	ONLY: rrd_local, rrd_read_parts_of_global
[3685]	219
[4648]	220	USE statistics, &
	221	ONLY: hom, hom_sum, mean_surface_level_height, pr_palm, rmask, statistic_regions, sums, &
	222	sums_divnew_l, sums_divold_l, sums_l, sums_l_l, sums_wsts_bc_l, ts_value, &
[1833]	223	weight_pres, weight_substep
[2259]	224
[4648]	225	USE synthetic_turbulence_generator_mod, &
[3939]	226	ONLY: stg_init, use_syn_turb_gen
[3685]	227
[4648]	228	USE surface_layer_fluxes_mod, &
[1691]	229	ONLY: init_surface_layer_fluxes
[2232]	230
[4648]	231	USE surface_mod, &
	232	ONLY : init_single_surface_properties, &
	233	init_surface_arrays, &
	234	init_surfaces, &
	235	surf_def_h, &
	236	surf_def_v, &
	237	surf_lsm_h, &
[4168]	238	surf_usm_h
[3685]	239
[3849]	240	#if defined( _OPENACC )
[4648]	241	USE surface_mod, &
[3849]	242	ONLY : bc_h
	243	#endif
	244
[4648]	245	USE surface_data_output_mod, &
[3648]	246	ONLY: surface_data_output_init
[3685]	247
[2007]	248	USE transpose_indices
[1]	249
[4648]	250
[1]	251	IMPLICIT NONE
[4648]	252
[4150]	253	INTEGER(iwp) :: i !< grid index in x direction
	254	INTEGER(iwp) :: ind_array(1) !< dummy used to determine start index for external pressure forcing
	255	INTEGER(iwp) :: j !< grid index in y direction
	256	INTEGER(iwp) :: k !< grid index in z direction
	257	INTEGER(iwp) :: k_surf !< surface level index
[4648]	258	INTEGER(iwp) :: l !< running index over surface orientation
	259	INTEGER(iwp) :: m !< index of surface element in surface data type
[4150]	260	INTEGER(iwp) :: nz_u_shift !< topography-top index on u-grid, used to vertically shift initial profiles
	261	INTEGER(iwp) :: nz_v_shift !< topography-top index on v-grid, used to vertically shift initial profiles
	262	INTEGER(iwp) :: nz_w_shift !< topography-top index on w-grid, used to vertically shift initial profiles
	263	INTEGER(iwp) :: nz_s_shift !< topography-top index on scalar-grid, used to vertically shift initial profiles
	264	INTEGER(iwp) :: nz_u_shift_l !< topography-top index on u-grid, used to vertically shift initial profiles
	265	INTEGER(iwp) :: nz_v_shift_l !< topography-top index on v-grid, used to vertically shift initial profiles
	266	INTEGER(iwp) :: nz_w_shift_l !< topography-top index on w-grid, used to vertically shift initial profiles
	267	INTEGER(iwp) :: nz_s_shift_l !< topography-top index on scalar-grid, used to vertically shift initial profiles
	268	INTEGER(iwp) :: nzt_l !< index of top PE boundary for multigrid level
	269	INTEGER(iwp) :: sr !< index of statistic region
[1]	270
[4648]	271	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !< toal number of horizontal grid points in statistical region on
	272	!< subdomain
[1]	273
[4648]	274	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !< number of horizontal non-wall bounded grid points on
	275	!< subdomain
	276	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !< number of horizontal non-topography grid points on
	277	!< subdomain
[1]	278
[2037]	279	REAL(wp) :: dx_l !< grid spacing along x on different multigrid level
	280	REAL(wp) :: dy_l !< grid spacing along y on different multigrid level
	281
[4648]	282	REAL(wp), DIMENSION(:), ALLOCATABLE :: init_l !< dummy array used for averaging 3D data to obtain
	283	!< inital profiles
	284	REAL(wp), DIMENSION(:), ALLOCATABLE :: mean_surface_level_height_l !< mean surface level height on subdomain
	285	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !< total number of non-topography grid points on subdomain
	286	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !< total number of non-topography grid points
	287	REAL(wp), DIMENSION(:), ALLOCATABLE :: p_hydrostatic !< hydrostatic pressure
	288
[3547]	289	REAL(wp), DIMENSION(1:3) :: volume_flow_area_l !< area of lateral and top model domain surface on local subdomain
	290	REAL(wp), DIMENSION(1:3) :: volume_flow_initial_l !< initial volume flow into model domain
[1]	291
[4648]	292	TYPE(real_2d) :: tmp_2d !< temporary variable to input additional surface-data from static file
[1]	293
[3987]	294	CALL location_message( 'model initialization', 'start' )
[4227]	295	!
	296	!-- Set reference date-time
[4680]	297	CALL init_date_time( date_time_str=origin_date_time, &
	298	use_fixed_date=use_fixed_date, &
	299	use_fixed_time=use_fixed_time )
[3987]	300
	301	IF ( debug_output ) CALL debug_message( 'allocating arrays', 'start' )
[1]	302	!
	303	!-- Allocate arrays
[4648]	304	ALLOCATE( mean_surface_level_height(0:statistic_regions), &
	305	mean_surface_level_height_l(0:statistic_regions), &
	306	ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
	307	ngp_3d(0:statistic_regions), &
	308	ngp_3d_inner(0:statistic_regions), &
	309	ngp_3d_inner_l(0:statistic_regions), &
	310	ngp_3d_inner_tmp(0:statistic_regions), &
	311	sums_divnew_l(0:statistic_regions), &
[1]	312	sums_divold_l(0:statistic_regions) )
[1195]	313	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
[4648]	314	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
	315	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
	316	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
	317	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
	318	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
	319	sums(nzb:nzt+1,pr_palm+max_pr_user+max_pr_cs+max_pr_salsa), &
[4131]	320	sums_l(nzb:nzt+1,pr_palm+max_pr_user+max_pr_cs+max_pr_salsa,0:threads_per_task-1), &
[4648]	321	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
[3700]	322	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions) )
	323	ALLOCATE( ts_value(dots_max,0:statistic_regions) )
[978]	324	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
[1]	325
[4648]	326	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
	327	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[1010]	328	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	329
[4648]	330	ALLOCATE( pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	331	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	332	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	333	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	334	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	335	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	336	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	337	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	338	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	339	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[667]	340	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1788]	341	IF ( .NOT. neutral ) THEN
[1032]	342	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	343	ENDIF
[673]	344	!
[3747]	345	!-- Pre-set masks for regional statistics. Default is the total model domain.
[4648]	346	!-- Ghost points are excluded because counting values at the ghost boundaries would bias the
	347	!-- statistics.
[3747]	348	rmask = 1.0_wp
	349	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
	350	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
	351	!
[4648]	352	!-- Following array is required for perturbation pressure within the iterative pressure solvers. For
	353	!-- the multistep schemes (Runge-Kutta), array p holds the weighted average of the substeps and
	354	!-- cannot be used in the Poisson solver.
[707]	355	IF ( psolver == 'sor' ) THEN
	356	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1575]	357	ELSEIF ( psolver(1:9) == 'multigrid' ) THEN
[707]	358	!
	359	!-- For performance reasons, multigrid is using one ghost layer only
	360	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
[673]	361	ENDIF
[1]	362
[1111]	363	!
	364	!-- Array for storing constant coeffficients of the tridiagonal solver
	365	IF ( psolver == 'poisfft' ) THEN
[1212]	366	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
[1111]	367	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
	368	ENDIF
	369
[1960]	370	IF ( humidity ) THEN
[1]	371	!
[1960]	372	!-- 3D-humidity
[4648]	373	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	374	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	375	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	376	vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	377	ENDIF
	378
[1960]	379	IF ( passive_scalar ) THEN
[1]	380
[1960]	381	!
	382	!-- 3D scalar arrays
[4648]	383	ALLOCATE( s_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	384	s_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[1960]	385	s_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[3636]	386
[1960]	387	ENDIF
	388
[1]	389	!
[4648]	390	!-- Allocate and set 1d-profiles for Stokes drift velocity. It may be set to non-zero values later
	391	!-- in ocean_init.
	392	ALLOCATE( u_stokes_zu(nzb:nzt+1), u_stokes_zw(nzb:nzt+1), &
[3302]	393	v_stokes_zu(nzb:nzt+1), v_stokes_zw(nzb:nzt+1) )
	394	u_stokes_zu(:) = 0.0_wp
	395	u_stokes_zw(:) = 0.0_wp
	396	v_stokes_zu(:) = 0.0_wp
	397	v_stokes_zw(:) = 0.0_wp
	398
	399	!
[2037]	400	!-- Allocation of anelastic and Boussinesq approximation specific arrays
	401	ALLOCATE( p_hydrostatic(nzb:nzt+1) )
	402	ALLOCATE( rho_air(nzb:nzt+1) )
	403	ALLOCATE( rho_air_zw(nzb:nzt+1) )
	404	ALLOCATE( drho_air(nzb:nzt+1) )
	405	ALLOCATE( drho_air_zw(nzb:nzt+1) )
	406	!
[4648]	407	!-- Density profile calculation for anelastic and Boussinesq approximation.
	408	!-- In case of a Boussinesq approximation, a constant density is calculated mainly for output
	409	!-- purposes. This density does not need to be considered in the model's system of equations.
[4088]	410	IF ( TRIM( approximation ) == 'anelastic' ) THEN
[2037]	411	DO k = nzb, nzt+1
[4648]	412	p_hydrostatic(k) = barometric_formula(zu(k), pt_surface * &
	413	exner_function(surface_pressure * 100.0_wp), &
	414	surface_pressure * 100.0_wp)
	415
[4088]	416	rho_air(k) = ideal_gas_law_rho_pt(p_hydrostatic(k), pt_init(k))
[2037]	417	ENDDO
[4648]	418
[2037]	419	DO k = nzb, nzt
	420	rho_air_zw(k) = 0.5_wp * ( rho_air(k) + rho_air(k+1) )
	421	ENDDO
[4648]	422
	423	rho_air_zw(nzt+1) = rho_air_zw(nzt) + 2.0_wp * ( rho_air(nzt+1) - rho_air_zw(nzt) )
	424
[2037]	425	ELSE
[2252]	426	DO k = nzb, nzt+1
[4648]	427	p_hydrostatic(k) = barometric_formula(zu(nzb), pt_surface * &
	428	exner_function(surface_pressure * 100.0_wp), &
	429	surface_pressure * 100.0_wp)
[4088]	430
	431	rho_air(k) = ideal_gas_law_rho_pt(p_hydrostatic(k), pt_init(nzb))
[2252]	432	ENDDO
[4648]	433
[2252]	434	DO k = nzb, nzt
	435	rho_air_zw(k) = 0.5_wp * ( rho_air(k) + rho_air(k+1) )
	436	ENDDO
[4648]	437
	438	rho_air_zw(nzt+1) = rho_air_zw(nzt) + 2.0_wp * ( rho_air(nzt+1) - rho_air_zw(nzt) )
	439
[2037]	440	ENDIF
[2696]	441	!
[4648]	442	!-- Compute the inverse density array in order to avoid expencive divisions
[2037]	443	drho_air = 1.0_wp / rho_air
	444	drho_air_zw = 1.0_wp / rho_air_zw
	445
	446	!
	447	!-- Allocation of flux conversion arrays
	448	ALLOCATE( heatflux_input_conversion(nzb:nzt+1) )
	449	ALLOCATE( waterflux_input_conversion(nzb:nzt+1) )
	450	ALLOCATE( momentumflux_input_conversion(nzb:nzt+1) )
	451	ALLOCATE( heatflux_output_conversion(nzb:nzt+1) )
	452	ALLOCATE( waterflux_output_conversion(nzb:nzt+1) )
	453	ALLOCATE( momentumflux_output_conversion(nzb:nzt+1) )
	454
	455	!
[4648]	456	!-- Calculate flux conversion factors according to approximation and in-/output mode
[2037]	457	DO k = nzb, nzt+1
	458
	459	IF ( TRIM( flux_input_mode ) == 'kinematic' ) THEN
	460	heatflux_input_conversion(k) = rho_air_zw(k)
	461	waterflux_input_conversion(k) = rho_air_zw(k)
	462	momentumflux_input_conversion(k) = rho_air_zw(k)
	463	ELSEIF ( TRIM( flux_input_mode ) == 'dynamic' ) THEN
[3274]	464	heatflux_input_conversion(k) = 1.0_wp / c_p
[2037]	465	waterflux_input_conversion(k) = 1.0_wp / l_v
	466	momentumflux_input_conversion(k) = 1.0_wp
	467	ENDIF
	468
	469	IF ( TRIM( flux_output_mode ) == 'kinematic' ) THEN
	470	heatflux_output_conversion(k) = drho_air_zw(k)
	471	waterflux_output_conversion(k) = drho_air_zw(k)
	472	momentumflux_output_conversion(k) = drho_air_zw(k)
	473	ELSEIF ( TRIM( flux_output_mode ) == 'dynamic' ) THEN
[3274]	474	heatflux_output_conversion(k) = c_p
[2037]	475	waterflux_output_conversion(k) = l_v
	476	momentumflux_output_conversion(k) = 1.0_wp
	477	ENDIF
	478
	479	IF ( .NOT. humidity ) THEN
	480	waterflux_input_conversion(k) = 1.0_wp
	481	waterflux_output_conversion(k) = 1.0_wp
	482	ENDIF
	483
	484	ENDDO
	485
	486	!
[4648]	487	!-- In case of multigrid method, compute grid lengths and grid factors for the grid levels with
	488	!-- respective density on each grid.
[2037]	489	IF ( psolver(1:9) == 'multigrid' ) THEN
	490
	491	ALLOCATE( ddx2_mg(maximum_grid_level) )
	492	ALLOCATE( ddy2_mg(maximum_grid_level) )
	493	ALLOCATE( dzu_mg(nzb+1:nzt+1,maximum_grid_level) )
	494	ALLOCATE( dzw_mg(nzb+1:nzt+1,maximum_grid_level) )
	495	ALLOCATE( f1_mg(nzb+1:nzt,maximum_grid_level) )
	496	ALLOCATE( f2_mg(nzb+1:nzt,maximum_grid_level) )
	497	ALLOCATE( f3_mg(nzb+1:nzt,maximum_grid_level) )
	498	ALLOCATE( rho_air_mg(nzb:nzt+1,maximum_grid_level) )
	499	ALLOCATE( rho_air_zw_mg(nzb:nzt+1,maximum_grid_level) )
	500
	501	dzu_mg(:,maximum_grid_level) = dzu
	502	rho_air_mg(:,maximum_grid_level) = rho_air
[4648]	503	!
	504	!-- Next line to ensure an equally spaced grid.
[2037]	505	dzu_mg(1,maximum_grid_level) = dzu(2)
[4648]	506	rho_air_mg(nzb,maximum_grid_level) = rho_air(nzb) + (rho_air(nzb) - rho_air(nzb+1))
[2037]	507
	508	dzw_mg(:,maximum_grid_level) = dzw
	509	rho_air_zw_mg(:,maximum_grid_level) = rho_air_zw
	510	nzt_l = nzt
	511	DO l = maximum_grid_level-1, 1, -1
	512	dzu_mg(nzb+1,l) = 2.0_wp * dzu_mg(nzb+1,l+1)
	513	dzw_mg(nzb+1,l) = 2.0_wp * dzw_mg(nzb+1,l+1)
[4648]	514	rho_air_mg(nzb,l) = rho_air_mg(nzb,l+1) + ( rho_air_mg(nzb,l+1) - &
	515	rho_air_mg(nzb+1,l+1) )
	516	rho_air_zw_mg(nzb,l) = rho_air_zw_mg(nzb,l+1) + ( rho_air_zw_mg(nzb,l+1) - &
	517	rho_air_zw_mg(nzb+1,l+1) )
[2037]	518	rho_air_mg(nzb+1,l) = rho_air_mg(nzb+1,l+1)
	519	rho_air_zw_mg(nzb+1,l) = rho_air_zw_mg(nzb+1,l+1)
	520	nzt_l = nzt_l / 2
	521	DO k = 2, nzt_l+1
	522	dzu_mg(k,l) = dzu_mg(2k-2,l+1) + dzu_mg(2k-1,l+1)
	523	dzw_mg(k,l) = dzw_mg(2k-2,l+1) + dzw_mg(2k-1,l+1)
	524	rho_air_mg(k,l) = rho_air_mg(2*k-1,l+1)
	525	rho_air_zw_mg(k,l) = rho_air_zw_mg(2*k-1,l+1)
	526	ENDDO
	527	ENDDO
	528
	529	nzt_l = nzt
	530	dx_l = dx
	531	dy_l = dy
	532	DO l = maximum_grid_level, 1, -1
	533	ddx2_mg(l) = 1.0_wp / dx_l**2
	534	ddy2_mg(l) = 1.0_wp / dy_l**2
	535	DO k = nzb+1, nzt_l
	536	f2_mg(k,l) = rho_air_zw_mg(k,l) / ( dzu_mg(k+1,l) * dzw_mg(k,l) )
	537	f3_mg(k,l) = rho_air_zw_mg(k-1,l) / ( dzu_mg(k,l) * dzw_mg(k,l) )
[4648]	538	f1_mg(k,l) = 2.0_wp * ( ddx2_mg(l) + ddy2_mg(l) ) &
[2037]	539	* rho_air_mg(k,l) + f2_mg(k,l) + f3_mg(k,l)
	540	ENDDO
	541	nzt_l = nzt_l / 2
	542	dx_l = dx_l * 2.0_wp
	543	dy_l = dy_l * 2.0_wp
	544	ENDDO
	545
	546	ENDIF
	547
	548	!
[1299]	549	!-- 1D-array for large scale subsidence velocity
[1361]	550	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
	551	ALLOCATE ( w_subs(nzb:nzt+1) )
	552	w_subs = 0.0_wp
	553	ENDIF
[1299]	554
	555	!
[4648]	556	!-- Arrays to store velocity data from t-dt and the phase speeds which are needed for radiation
	557	!-- boundary conditions.
[3182]	558	IF ( bc_radiation_l ) THEN
[4648]	559	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
	560	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
[667]	561	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
[73]	562	ENDIF
[3182]	563	IF ( bc_radiation_r ) THEN
[4648]	564	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
	565	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
[667]	566	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
[73]	567	ENDIF
[3182]	568	IF ( bc_radiation_l .OR. bc_radiation_r ) THEN
[4648]	569	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), c_w(nzb:nzt+1,nysg:nyng) )
[106]	570	ENDIF
[3182]	571	IF ( bc_radiation_s ) THEN
[4648]	572	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
	573	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
[667]	574	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
[73]	575	ENDIF
[3182]	576	IF ( bc_radiation_n ) THEN
[4648]	577	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
	578	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
[667]	579	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
[73]	580	ENDIF
[3182]	581	IF ( bc_radiation_s .OR. bc_radiation_n ) THEN
[4648]	582	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), c_w(nzb:nzt+1,nxlg:nxrg) )
[106]	583	ENDIF
[4648]	584	IF ( bc_radiation_l .OR. bc_radiation_r .OR. bc_radiation_s .OR. bc_radiation_n ) THEN
	585	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
[978]	586	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
	587	ENDIF
[73]	588
	589	!
[1]	590	!-- Initial assignment of the pointers
[1032]	591	IF ( .NOT. neutral ) THEN
	592	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
	593	ELSE
	594	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
	595	ENDIF
[1001]	596	u => u_1; u_p => u_2; tu_m => u_3
	597	v => v_1; v_p => v_2; tv_m => v_3
	598	w => w_1; w_p => w_2; tw_m => w_3
[1]	599
[1960]	600	IF ( humidity ) THEN
[1001]	601	q => q_1; q_p => q_2; tq_m => q_3
[3274]	602	vpt => vpt_1
[1001]	603	ENDIF
[4648]	604
[1960]	605	IF ( passive_scalar ) THEN
	606	s => s_1; s_p => s_2; ts_m => s_3
[4648]	607	ENDIF
[1]	608
	609	!
[2696]	610	!-- Initialize surface arrays
[2232]	611	CALL init_surface_arrays
	612	!
[3294]	613	!-- Allocate arrays for other modules
[3685]	614	CALL module_interface_init_arrays
[1551]	615
[1914]	616
[2320]	617	!
[4648]	618	!-- Allocate arrays containing the RK coefficient for calculation of perturbation pressure and
	619	!-- turbulent fluxes. At this point values are set for pressure calculation during initialization
	620	!-- (where no timestep is done). Further below the values needed within the timestep scheme will be
	621	!-- set.
	622	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
[1878]	623	weight_pres(1:intermediate_timestep_count_max) )
[1340]	624	weight_substep = 1.0_wp
	625	weight_pres = 1.0_wp
[1918]	626	intermediate_timestep_count = 0 ! needed when simulated_time = 0.0
[4648]	627
[3987]	628	IF ( debug_output ) CALL debug_message( 'allocating arrays', 'end' )
[1918]	629
[673]	630	!
[3014]	631	!-- Initialize time series
	632	ts_value = 0.0_wp
	633
	634	!
[1918]	635	!-- Initialize local summation arrays for routine flow_statistics.
[4648]	636	!-- This is necessary because they may not yet have been initialized when they are called from
	637	!-- flow_statistics (or - depending on the chosen model run - are never initialized)
	638	sums_divnew_l = 0.0_wp
	639	sums_divold_l = 0.0_wp
	640	sums_l_l = 0.0_wp
	641	sums_wsts_bc_l = 0.0_wp
	642
[1918]	643	!
[1]	644	!-- Initialize model variables
[4648]	645	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
[328]	646	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
[1]	647	!
[2696]	648	!-- Initialization with provided input data derived from larger-scale model
	649	IF ( INDEX( initializing_actions, 'inifor' ) /= 0 ) THEN
[3987]	650	IF ( debug_output ) CALL debug_message( 'initializing with INIFOR', 'start' )
[2696]	651	!
[4648]	652	!-- Read initial 1D profiles or 3D data from NetCDF file, depending on the provided
	653	!-- level-of-detail.
	654	!-- At the moment, only u, v, w, pt and q are provided.
[2696]	655	CALL netcdf_data_input_init_3d
	656	!
[4648]	657	!-- Please note, Inifor provides data from nzb+1 to nzt.
	658	!-- Bottom and top boundary conditions for Inifor profiles are already set (just after
	659	!-- reading), so that this is not necessary here.
	660	!-- Depending on the provided level-of-detail, initial Inifor data is either stored on data
	661	!-- type (lod=1), or directly on 3D arrays (lod=2).
	662	!-- In order to obtain also initial profiles in case of lod=2 (which is required for e.g.
	663	!-- damping), average over 3D data.
[3182]	664	IF( init_3d%lod_u == 1 ) THEN
	665	u_init = init_3d%u_init
[4648]	666	ELSEIF( init_3d%lod_u == 2 ) THEN
	667	ALLOCATE( init_l(nzb:nzt+1) )
[3182]	668	DO k = nzb, nzt+1
	669	init_l(k) = SUM( u(k,nys:nyn,nxl:nxr) )
	670	ENDDO
	671	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
[1384]	672
[3182]	673	#if defined( __parallel )
[4648]	674	CALL MPI_ALLREDUCE( init_l, u_init, nzt+1-nzb+1, MPI_REAL, MPI_SUM, comm2d, ierr )
[3182]	675	#else
	676	u_init = init_l
	677	#endif
	678	DEALLOCATE( init_l )
[3051]	679
[2696]	680	ENDIF
[4648]	681
	682	IF( init_3d%lod_v == 1 ) THEN
[3182]	683	v_init = init_3d%v_init
[4648]	684	ELSEIF( init_3d%lod_v == 2 ) THEN
	685	ALLOCATE( init_l(nzb:nzt+1) )
[3182]	686	DO k = nzb, nzt+1
	687	init_l(k) = SUM( v(k,nys:nyn,nxl:nxr) )
	688	ENDDO
	689	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
[2696]	690
[3182]	691	#if defined( __parallel )
[4648]	692	CALL MPI_ALLREDUCE( init_l, v_init, nzt+1-nzb+1, MPI_REAL, MPI_SUM, comm2d, ierr )
[3182]	693	#else
	694	v_init = init_l
	695	#endif
	696	DEALLOCATE( init_l )
	697	ENDIF
	698	IF( .NOT. neutral ) THEN
	699	IF( init_3d%lod_pt == 1 ) THEN
	700	pt_init = init_3d%pt_init
[4648]	701	ELSEIF( init_3d%lod_pt == 2 ) THEN
	702	ALLOCATE( init_l(nzb:nzt+1) )
[3182]	703	DO k = nzb, nzt+1
	704	init_l(k) = SUM( pt(k,nys:nyn,nxl:nxr) )
	705	ENDDO
	706	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
	707
	708	#if defined( __parallel )
[4648]	709	CALL MPI_ALLREDUCE( init_l, pt_init, nzt+1-nzb+1, MPI_REAL, MPI_SUM, comm2d, ierr )
[3182]	710	#else
	711	pt_init = init_l
	712	#endif
	713	DEALLOCATE( init_l )
	714	ENDIF
	715	ENDIF
	716
	717
	718	IF( humidity ) THEN
	719	IF( init_3d%lod_q == 1 ) THEN
	720	q_init = init_3d%q_init
[4648]	721	ELSEIF( init_3d%lod_q == 2 ) THEN
	722	ALLOCATE( init_l(nzb:nzt+1) )
[3182]	723	DO k = nzb, nzt+1
	724	init_l(k) = SUM( q(k,nys:nyn,nxl:nxr) )
	725	ENDDO
	726	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
	727
	728	#if defined( __parallel )
[4648]	729	CALL MPI_ALLREDUCE( init_l, q_init, nzt+1-nzb+1, MPI_REAL, MPI_SUM, comm2d, ierr )
[3182]	730	#else
	731	q_init = init_l
	732	#endif
	733	DEALLOCATE( init_l )
	734	ENDIF
	735	ENDIF
	736
[2696]	737	!
[4648]	738	!-- Write initial profiles onto 3D arrays.
	739	!-- Work-around, 3D initialization of u,v,w creates artificial structures which correlate with
	740	!-- the processor grid. The reason for this is still unknown. To work-around this, 3D
	741	!-- initialization will be effectively reduce to a 1D initialization where no such artificial
	742	!-- structures appear.
[2696]	743	DO i = nxlg, nxrg
	744	DO j = nysg, nyng
[4648]	745	IF( init_3d%lod_u == 1 .OR. init_3d%lod_u == 2 ) u(:,j,i) = u_init(:)
	746	IF( init_3d%lod_v == 1 .OR. init_3d%lod_u == 2 ) v(:,j,i) = v_init(:)
	747	IF( .NOT. neutral .AND. ( init_3d%lod_pt == 1 .OR. init_3d%lod_pt == 2 ) ) &
[3051]	748	pt(:,j,i) = pt_init(:)
[4648]	749	IF( humidity .AND. ( init_3d%lod_q == 1 .OR. init_3d%lod_q == 2 ) ) &
[4130]	750	q(:,j,i) = q_init(:)
[2696]	751	ENDDO
	752	ENDDO
	753	!
[4648]	754	!-- Set geostrophic wind components.
[2938]	755	IF ( init_3d%from_file_ug ) THEN
	756	ug(:) = init_3d%ug_init(:)
	757	ENDIF
	758	IF ( init_3d%from_file_vg ) THEN
	759	vg(:) = init_3d%vg_init(:)
	760	ENDIF
[3404]	761	!
	762	!-- Set bottom and top boundary condition for geostrophic wind
[2938]	763	ug(nzt+1) = ug(nzt)
	764	vg(nzt+1) = vg(nzt)
[3404]	765	ug(nzb) = ug(nzb+1)
	766	vg(nzb) = vg(nzb+1)
[2696]	767	!
	768	!-- Set inital w to 0
	769	w = 0.0_wp
	770
	771	IF ( passive_scalar ) THEN
	772	DO i = nxlg, nxrg
	773	DO j = nysg, nyng
	774	s(:,j,i) = s_init
	775	ENDDO
	776	ENDDO
	777	ENDIF
	778
	779	!
[4648]	780	!-- Set velocity components at non-atmospheric / oceanic grid points to zero.
[4346]	781	u = MERGE( u, 0.0_wp, BTEST( wall_flags_total_0, 1 ) )
	782	v = MERGE( v, 0.0_wp, BTEST( wall_flags_total_0, 2 ) )
	783	w = MERGE( w, 0.0_wp, BTEST( wall_flags_total_0, 3 ) )
[2700]	784	!
[4648]	785	!-- Initialize surface variables, e.g. friction velocity, momentum fluxes, etc.
	786	CALL init_surfaces
[2696]	787
[4648]	788	IF ( debug_output ) CALL debug_message( 'initializing with INIFOR', 'end' )
[2696]	789	!
	790	!-- Initialization via computed 1D-model profiles
	791	ELSEIF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
	792
[4648]	793	IF ( debug_output ) CALL debug_message( 'initializing with 1D model profiles', 'start' )
[1]	794	!
	795	!-- Use solutions of the 1D model as initial profiles,
	796	!-- start 1D model
	797	CALL init_1d_model
	798	!
	799	!-- Transfer initial profiles to the arrays of the 3D model
[667]	800	DO i = nxlg, nxrg
	801	DO j = nysg, nyng
[1]	802	pt(:,j,i) = pt_init
	803	u(:,j,i) = u1d
	804	v(:,j,i) = v1d
	805	ENDDO
	806	ENDDO
	807
[1960]	808	IF ( humidity ) THEN
[667]	809	DO i = nxlg, nxrg
	810	DO j = nysg, nyng
[1]	811	q(:,j,i) = q_init
	812	ENDDO
	813	ENDDO
	814	ENDIF
[2292]	815
[1960]	816	IF ( passive_scalar ) THEN
	817	DO i = nxlg, nxrg
	818	DO j = nysg, nyng
	819	s(:,j,i) = s_init
	820	ENDDO
[4648]	821	ENDDO
[1960]	822	ENDIF
[1]	823	!
	824	!-- Store initial profiles for output purposes etc.
[2696]	825	IF ( .NOT. constant_diffusion ) THEN
[1]	826	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
	827	ENDIF
	828	!
[2696]	829	!-- Set velocities back to zero
[4346]	830	u = MERGE( u, 0.0_wp, BTEST( wall_flags_total_0, 1 ) )
[4648]	831	v = MERGE( v, 0.0_wp, BTEST( wall_flags_total_0, 2 ) )
[1]	832	!
[4648]	833	!-- WARNING: The extra boundary conditions set after running the 1D model impose an error on
	834	!-- -------- the divergence one layer below the topography; need to correct later
	835	!-- ATTENTION: Provisional correction for Piacsek & Williams advection scheme: keep u and v
	836	!-- ---------- zero one layer below the topography.
[2696]	837	IF ( ibc_uv_b == 1 ) THEN
[667]	838	!
[2696]	839	!-- Neumann condition
	840	DO i = nxl-1, nxr+1
	841	DO j = nys-1, nyn+1
	842	u(nzb,j,i) = u(nzb+1,j,i)
	843	v(nzb,j,i) = v(nzb+1,j,i)
[1]	844	ENDDO
[2696]	845	ENDDO
[1]	846
	847	ENDIF
[2618]	848	!
[4648]	849	!-- Initialize surface variables, e.g. friction velocity, momentum fluxes, etc.
[2618]	850	CALL init_surfaces
[1]	851
[4648]	852	IF ( debug_output ) CALL debug_message( 'initializing with 1D model profiles', 'end' )
[1384]	853
[4648]	854	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) THEN
[1241]	855
[4648]	856	IF ( debug_output ) CALL debug_message( 'initializing with constant profiles', 'start' )
[2259]	857
	858	!
[4648]	859	!-- Use constructed initial profiles (velocity constant with height, temperature profile with
	860	!-- constant gradient)
[667]	861	DO i = nxlg, nxrg
	862	DO j = nysg, nyng
[1]	863	pt(:,j,i) = pt_init
	864	u(:,j,i) = u_init
	865	v(:,j,i) = v_init
	866	ENDDO
	867	ENDDO
	868	!
[2758]	869	!-- Mask topography
[4346]	870	u = MERGE( u, 0.0_wp, BTEST( wall_flags_total_0, 1 ) )
	871	v = MERGE( v, 0.0_wp, BTEST( wall_flags_total_0, 2 ) )
[2758]	872	!
[4648]	873	!-- Set initial horizontal velocities at the lowest computational grid levels to zero in order
	874	!-- to avoid too small time steps caused by the diffusion limit in the initial phase of a run
	875	!-- (at k=1, dz/2 occurs in the limiting formula!).
	876	!-- Please note, in case land- or urban-surface model is used and a spinup is applied, masking
	877	!-- the lowest computational level is not possible as MOST as well as energy-balance
	878	!-- parametrizations will not work with zero wind velocity.
	879	IF ( ibc_uv_b /= 1 .AND. .NOT. spinup ) THEN
[1815]	880	DO i = nxlg, nxrg
	881	DO j = nysg, nyng
[2232]	882	DO k = nzb, nzt
[4648]	883	u(k,j,i) = MERGE( u(k,j,i), 0.0_wp, BTEST( wall_flags_total_0(k,j,i), 20 ) )
	884	v(k,j,i) = MERGE( v(k,j,i), 0.0_wp, BTEST( wall_flags_total_0(k,j,i), 21 ) )
[2232]	885	ENDDO
[1815]	886	ENDDO
	887	ENDDO
	888	ENDIF
[1]	889
[1960]	890	IF ( humidity ) THEN
[667]	891	DO i = nxlg, nxrg
	892	DO j = nysg, nyng
[1]	893	q(:,j,i) = q_init
	894	ENDDO
	895	ENDDO
	896	ENDIF
[4648]	897
[1960]	898	IF ( passive_scalar ) THEN
	899	DO i = nxlg, nxrg
	900	DO j = nysg, nyng
	901	s(:,j,i) = s_init
	902	ENDDO
	903	ENDDO
	904	ENDIF
[1]	905
[1920]	906	!
[4648]	907	!-- Compute initial temperature field and other constants used in case of a sloping surface.
[1]	908	IF ( sloping_surface ) CALL init_slope
[2618]	909	!
[4648]	910	!-- Initialize surface variables, e.g. friction velocity, momentum fluxes, etc.
[2618]	911	CALL init_surfaces
[4648]	912
[3987]	913	IF ( debug_output ) CALL debug_message( 'initializing with constant profiles', 'end' )
[1384]	914
[4648]	915	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) THEN
[1384]	916
[3987]	917	IF ( debug_output ) CALL debug_message( 'initializing by user', 'start' )
[46]	918	!
[4648]	919	!-- Pre-initialize surface variables, i.e. setting start- and end-indices at each
	920	!-- (j,i)-location. Please note, this does not supersede user-defined initialization of
	921	!-- surface quantities.
[2618]	922	CALL init_surfaces
	923	!
[46]	924	!-- Initialization will completely be done by the user
	925	CALL user_init_3d_model
	926
[3987]	927	IF ( debug_output ) CALL debug_message( 'initializing by user', 'end' )
[1384]	928
[1]	929	ENDIF
[1384]	930
[4648]	931	IF ( debug_output ) THEN
	932	CALL debug_message( 'initializing statistics, boundary conditions, etc.', 'start' )
	933	ENDIF
[1384]	934
[667]	935	!
	936	!-- Bottom boundary
[4648]	937	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
[1340]	938	u(nzb,:,:) = 0.0_wp
	939	v(nzb,:,:) = 0.0_wp
[667]	940	ENDIF
[1]	941
	942	!
[151]	943	!-- Apply channel flow boundary condition
[132]	944	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
[1340]	945	u(nzt+1,:,:) = 0.0_wp
	946	v(nzt+1,:,:) = 0.0_wp
[132]	947	ENDIF
	948
	949	!
[1]	950	!-- Calculate virtual potential temperature
[1960]	951	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
[1]	952
	953	!
[4648]	954	!-- Store initial profiles for output purposes etc.. Please note, in case of initialization of u,
	955	!-- v, w, pt, and q via output data derived from larger scale models, data will not be
	956	!-- horizontally homogeneous. Actually, a mean profile should be calculated before.
[1]	957	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
	958	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
[667]	959	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
[1340]	960	hom(nzb,1,5,:) = 0.0_wp
	961	hom(nzb,1,6,:) = 0.0_wp
[1]	962	ENDIF
	963	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
	964
[75]	965	IF ( humidity ) THEN
[1]	966	!
[4648]	967	!-- Store initial profile of total water content, virtual potential temperature
[1]	968	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
	969	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
[2696]	970	!
[4648]	971	!-- Store initial profile of mixing ratio and potential temperature
[3274]	972	IF ( bulk_cloud_model .OR. cloud_droplets ) THEN
[1]	973	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
	974	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
	975	ENDIF
	976	ENDIF
	977
[2696]	978	!
	979	!-- Store initial scalar profile
[1]	980	IF ( passive_scalar ) THEN
[2513]	981	hom(:,1,121,:) = SPREAD( s(:,nys,nxl), 2, statistic_regions+1 )
[1]	982	ENDIF
	983
	984	!
[1400]	985	!-- Initialize the random number generators (from numerical recipes)
	986	CALL random_function_ini
[4648]	987
[1400]	988	IF ( random_generator == 'random-parallel' ) THEN
[3241]	989	CALL init_parallel_random_generator( nx, nys, nyn, nxl, nxr )
[1400]	990	ENDIF
	991	!
[4648]	992	!-- Set the reference state to be used in the buoyancy terms (for ocean runs the reference state
	993	!-- will be set (overwritten) in init_ocean).
[1179]	994	IF ( use_single_reference_value ) THEN
[4648]	995	IF ( .NOT. humidity ) THEN
[1179]	996	ref_state(:) = pt_reference
	997	ELSE
	998	ref_state(:) = vpt_reference
	999	ENDIF
	1000	ELSE
[4648]	1001	IF ( .NOT. humidity ) THEN
[1179]	1002	ref_state(:) = pt_init(:)
	1003	ELSE
	1004	ref_state(:) = vpt(:,nys,nxl)
	1005	ENDIF
	1006	ENDIF
[152]	1007
	1008	!
[707]	1009	!-- For the moment, vertical velocity is zero
[1340]	1010	w = 0.0_wp
[1]	1011
	1012	!
	1013	!-- Initialize array sums (must be defined in first call of pres)
[1340]	1014	sums = 0.0_wp
[1]	1015
	1016	!
[707]	1017	!-- In case of iterative solvers, p must get an initial value
[1575]	1018	IF ( psolver(1:9) == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
[707]	1019	!
[1]	1020	!-- Impose vortex with vertical axis on the initial velocity profile
	1021	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
	1022	CALL init_rankine
	1023	ENDIF
	1024
	1025	!
[4648]	1026	!-- Impose temperature anomaly (advection test only) or warm air bubble close to surface.
	1027	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 .OR. &
[3035]	1028	INDEX( initializing_actions, 'initialize_bubble' ) /= 0 ) THEN
[1]	1029	CALL init_pt_anomaly
	1030	ENDIF
[4648]	1031
[1]	1032	!
	1033	!-- If required, change the surface temperature at the start of the 3D run
[1340]	1034	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
[1]	1035	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
	1036	ENDIF
	1037
	1038	!
	1039	!-- If required, change the surface humidity/scalar at the start of the 3D
	1040	!-- run
[4648]	1041	IF ( humidity .AND. q_surface_initial_change /= 0.0_wp ) &
[1]	1042	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
[4648]	1043
	1044	IF ( passive_scalar .AND. s_surface_initial_change /= 0.0_wp ) &
[1960]	1045	s(nzb,:,:) = s(nzb,:,:) + s_surface_initial_change
[1]	1046
[4648]	1047
[1]	1048	!
	1049	!-- Initialize old and new time levels.
[2696]	1050	tpt_m = 0.0_wp; tu_m = 0.0_wp; tv_m = 0.0_wp; tw_m = 0.0_wp
	1051	pt_p = pt; u_p = u; v_p = v; w_p = w
[1]	1052
[1960]	1053	IF ( humidity ) THEN
[1340]	1054	tq_m = 0.0_wp
[1]	1055	q_p = q
	1056	ENDIF
[4648]	1057
[1960]	1058	IF ( passive_scalar ) THEN
	1059	ts_m = 0.0_wp
	1060	s_p = s
[4648]	1061	ENDIF
[1]	1062
[4648]	1063	IF ( debug_output ) THEN
	1064	CALL debug_message( 'initializing statistics, boundary conditions, etc.', 'end' )
	1065	ENDIF
[94]	1066
[1788]	1067	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
[2232]	1068	TRIM( initializing_actions ) == 'cyclic_fill' ) &
[1]	1069	THEN
[1384]	1070
[4648]	1071	IF ( debug_output ) THEN
	1072	CALL debug_message( 'initializing in case of restart / cyclic_fill', 'start' )
	1073	ENDIF
[1]	1074	!
[4648]	1075	!-- Initialize surface elements and its attributes, e.g. heat- and momentumfluxes, roughness,
	1076	!-- scaling parameters. As number of surface elements might be different between runs, e.g. in
	1077	!-- case of cyclic fill, and not all surface elements are read, surface elements need to be
	1078	!-- initialized before.
	1079	!-- Please note, in case of cyclic fill, surfaces should be initialized after restart data is
	1080	!-- read, else, individual settings of surface parameters will be overwritten from data of
	1081	!-- precursor run, hence, init_surfaces is called a second time after reading the restart data.
	1082	CALL init_surfaces
[3609]	1083	!
[4648]	1084	!-- When reading data for cyclic fill of 3D prerun data files, read some of the global variables
	1085	!-- from the restart file which are required for initializing the inflow
[328]	1086	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
[559]	1087
[759]	1088	DO i = 0, io_blocks-1
	1089	IF ( i == io_group ) THEN
[2894]	1090	CALL rrd_read_parts_of_global
[759]	1091	ENDIF
	1092	#if defined( __parallel )
	1093	CALL MPI_BARRIER( comm2d, ierr )
	1094	#endif
	1095	ENDDO
[328]	1096
[767]	1097	ENDIF
	1098
[151]	1099	!
[2894]	1100	!-- Read processor specific binary data from restart file
[767]	1101	DO i = 0, io_blocks-1
	1102	IF ( i == io_group ) THEN
[2894]	1103	CALL rrd_local
[767]	1104	ENDIF
	1105	#if defined( __parallel )
	1106	CALL MPI_BARRIER( comm2d, ierr )
	1107	#endif
	1108	ENDDO
[4648]	1109
	1110
[4365]	1111	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
	1112
[3608]	1113	!
[4648]	1114	!-- In case of cyclic fill, call init_surfaces a second time, so that surface properties such
	1115	!-- as heat fluxes are initialized as prescribed.
[3609]	1116	CALL init_surfaces
[767]	1117
[328]	1118	!
[4648]	1119	!-- Overwrite u_init, v_init, pt_init, q_init and s_init with the horizontally mean (hom)
	1120	!-- vertical profiles from the end of the prerun, because these profiles shall be used as the
	1121	!-- reference state for the rayleigh damping and the pt_damping. This is especially important
	1122	!-- for the use of large_scale_subsidence, because the reference temperature in the free
	1123	!-- atmosphere changes in time.
[4365]	1124	u_init(:) = hom_sum(:,1,0)
	1125	v_init(:) = hom_sum(:,2,0)
	1126	pt_init(:) = hom_sum(:,4,0)
[4648]	1127	IF ( humidity ) q_init(:) = hom_sum(:,41,0)
	1128	IF ( passive_scalar ) s_init(:) = hom_sum(:,115,0)
[4365]	1129	ENDIF
	1130	!
[4648]	1131	!-- In case of complex terrain and cyclic fill method as initialization, shift initial data in
	1132	!-- the vertical direction for each point in the x-y-plane depending on local surface height.
	1133	IF ( complex_terrain .AND. TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
[2550]	1134	DO i = nxlg, nxrg
	1135	DO j = nysg, nyng
[4168]	1136	nz_u_shift = topo_top_ind(j,i,1)
	1137	nz_v_shift = topo_top_ind(j,i,2)
	1138	nz_w_shift = topo_top_ind(j,i,3)
	1139	nz_s_shift = topo_top_ind(j,i,0)
[2550]	1140
[4648]	1141	u(nz_u_shift:nzt+1,j,i) = u(0:nzt+1-nz_u_shift,j,i)
[2550]	1142
	1143	v(nz_v_shift:nzt+1,j,i) = v(0:nzt+1-nz_v_shift,j,i)
	1144
	1145	w(nz_w_shift:nzt+1,j,i) = w(0:nzt+1-nz_w_shift,j,i)
	1146
	1147	p(nz_s_shift:nzt+1,j,i) = p(0:nzt+1-nz_s_shift,j,i)
	1148	pt(nz_s_shift:nzt+1,j,i) = pt(0:nzt+1-nz_s_shift,j,i)
	1149	ENDDO
	1150	ENDDO
	1151	ENDIF
	1152	!
[767]	1153	!-- Initialization of the turbulence recycling method
[4648]	1154	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. turbulent_inflow ) THEN
[767]	1155	!
	1156	!-- First store the profiles to be used at the inflow.
[4648]	1157	!-- These profiles are the (temporally) and horizontally averaged vertical profiles from the
	1158	!-- prerun. Alternatively, prescribed profiles for u,v-components can be used.
[3288]	1159	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,1:num_mean_inflow_profiles) )
[151]	1160
[767]	1161	IF ( use_prescribed_profile_data ) THEN
	1162	mean_inflow_profiles(:,1) = u_init ! u
	1163	mean_inflow_profiles(:,2) = v_init ! v
	1164	ELSE
[328]	1165	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
	1166	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
[767]	1167	ENDIF
	1168	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
[4648]	1169	IF ( humidity ) mean_inflow_profiles(:,6) = hom_sum(:,41,0) ! q
	1170	IF ( passive_scalar ) mean_inflow_profiles(:,7) = hom_sum(:,115,0) ! s
[4365]	1171
[2550]	1172	!
[4648]	1173	!-- In case of complex terrain, determine vertical displacement at inflow boundary and adjust
	1174	!-- mean inflow profiles
[2550]	1175	IF ( complex_terrain ) THEN
[4648]	1176	IF ( nxlg <= 0 .AND. nxrg >= 0 .AND. nysg <= 0 .AND. nyng >= 0 ) THEN
[4168]	1177	nz_u_shift_l = topo_top_ind(j,i,1)
	1178	nz_v_shift_l = topo_top_ind(j,i,2)
	1179	nz_w_shift_l = topo_top_ind(j,i,3)
	1180	nz_s_shift_l = topo_top_ind(j,i,0)
[2550]	1181	ELSE
	1182	nz_u_shift_l = 0
	1183	nz_v_shift_l = 0
	1184	nz_w_shift_l = 0
	1185	nz_s_shift_l = 0
	1186	ENDIF
[151]	1187
[2550]	1188	#if defined( __parallel )
[4648]	1189	CALL MPI_ALLREDUCE( nz_u_shift_l, nz_u_shift, 1, MPI_INTEGER, MPI_MAX, comm2d, ierr )
	1190	CALL MPI_ALLREDUCE( nz_v_shift_l, nz_v_shift, 1, MPI_INTEGER, MPI_MAX, comm2d, ierr )
	1191	CALL MPI_ALLREDUCE( nz_w_shift_l, nz_w_shift, 1, MPI_INTEGER, MPI_MAX, comm2d, ierr )
	1192	CALL MPI_ALLREDUCE( nz_s_shift_l, nz_s_shift, 1, MPI_INTEGER, MPI_MAX, comm2d, ierr )
[2550]	1193	#else
	1194	nz_u_shift = nz_u_shift_l
	1195	nz_v_shift = nz_v_shift_l
	1196	nz_w_shift = nz_w_shift_l
	1197	nz_s_shift = nz_s_shift_l
	1198	#endif
	1199
	1200	mean_inflow_profiles(:,1) = 0.0_wp
	1201	mean_inflow_profiles(nz_u_shift:nzt+1,1) = hom_sum(0:nzt+1-nz_u_shift,1,0) ! u
	1202
	1203	mean_inflow_profiles(:,2) = 0.0_wp
	1204	mean_inflow_profiles(nz_v_shift:nzt+1,2) = hom_sum(0:nzt+1-nz_v_shift,2,0) ! v
	1205
	1206	mean_inflow_profiles(nz_s_shift:nzt+1,4) = hom_sum(0:nzt+1-nz_s_shift,4,0) ! pt
	1207
	1208	ENDIF
	1209
[151]	1210	!
[4648]	1211	!-- If necessary, adjust the horizontal flow field to the prescribed profiles
[767]	1212	IF ( use_prescribed_profile_data ) THEN
	1213	DO i = nxlg, nxrg
[667]	1214	DO j = nysg, nyng
[328]	1215	DO k = nzb, nzt+1
[767]	1216	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
	1217	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
[328]	1218	ENDDO
[151]	1219	ENDDO
[767]	1220	ENDDO
	1221	ENDIF
[151]	1222
	1223	!
[4648]	1224	!-- Use these mean profiles at the inflow (provided that Dirichlet conditions are used)
[3182]	1225	IF ( bc_dirichlet_l ) THEN
[767]	1226	DO j = nysg, nyng
	1227	DO k = nzb, nzt+1
	1228	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
	1229	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
[1340]	1230	w(k,j,nxlg:-1) = 0.0_wp
[767]	1231	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
[4648]	1232	IF ( humidity ) q(k,j,nxlg:-1) = mean_inflow_profiles(k,6)
	1233	IF ( passive_scalar ) s(k,j,nxlg:-1) = mean_inflow_profiles(k,7)
[767]	1234	ENDDO
	1235	ENDDO
	1236	ENDIF
	1237
[151]	1238	!
[4648]	1239	!-- Calculate the damping factors to be used at the inflow. For a turbulent inflow the
	1240	!-- turbulent fluctuations have to be limited vertically because otherwise the turbulent
	1241	!-- inflow layer will grow in time.
[1340]	1242	IF ( inflow_damping_height == 9999999.9_wp ) THEN
[767]	1243	!
[4648]	1244	!-- Default: use the inversion height calculated by the prerun; if this is zero,
	1245	!-- inflow_damping_height must be explicitly specified.
[1340]	1246	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
[767]	1247	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
	1248	ELSE
[4648]	1249	WRITE( message_string, * ) 'inflow_damping_height must be ', &
	1250	'explicitly specified because&the inversion height ', &
	1251	'calculated by the prerun is zero.'
[767]	1252	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
[292]	1253	ENDIF
[151]	1254
[767]	1255	ENDIF
	1256
[1340]	1257	IF ( inflow_damping_width == 9999999.9_wp ) THEN
[151]	1258	!
[4648]	1259	!-- Default for the transition range: one tenth of the undamped layer
[1340]	1260	inflow_damping_width = 0.1_wp * inflow_damping_height
[151]	1261
[767]	1262	ENDIF
[151]	1263
[767]	1264	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
[151]	1265
[767]	1266	DO k = nzb, nzt+1
[151]	1267
[767]	1268	IF ( zu(k) <= inflow_damping_height ) THEN
[1340]	1269	inflow_damping_factor(k) = 1.0_wp
[996]	1270	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
[4648]	1271	inflow_damping_factor(k) = 1.0_wp - &
	1272	( zu(k) - inflow_damping_height ) / inflow_damping_width
[767]	1273	ELSE
[1340]	1274	inflow_damping_factor(k) = 0.0_wp
[767]	1275	ENDIF
[151]	1276
[767]	1277	ENDDO
[151]	1278
[147]	1279	ENDIF
	1280
[152]	1281	!
[2696]	1282	!-- Inside buildings set velocities back to zero
[4648]	1283	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. topography /= 'flat' ) THEN
[359]	1284	!
[2696]	1285	!-- Inside buildings set velocities back to zero.
	1286	!-- Other scalars (pt, q, s, p, sa, ...) are ignored at present,
[359]	1287	!-- maybe revise later.
[1001]	1288	DO i = nxlg, nxrg
	1289	DO j = nysg, nyng
[2232]	1290	DO k = nzb, nzt
[4648]	1291	u(k,j,i) = MERGE( u(k,j,i), 0.0_wp, BTEST( wall_flags_total_0(k,j,i), 1 ) )
	1292	v(k,j,i) = MERGE( v(k,j,i), 0.0_wp, BTEST( wall_flags_total_0(k,j,i), 2 ) )
	1293	w(k,j,i) = MERGE( w(k,j,i), 0.0_wp, BTEST( wall_flags_total_0(k,j,i), 3 ) )
[2232]	1294	ENDDO
[359]	1295	ENDDO
[1001]	1296	ENDDO
[359]	1297
	1298	ENDIF
	1299
	1300	!
[4648]	1301	!-- Calculate initial temperature field and other constants used in case of a sloping surface
[1]	1302	IF ( sloping_surface ) CALL init_slope
	1303
	1304	!
[4648]	1305	!-- Initialize new time levels (only done in order to set boundary values including ghost points)
[2696]	1306	pt_p = pt; u_p = u; v_p = v; w_p = w
[1960]	1307	IF ( humidity ) THEN
[1053]	1308	q_p = q
	1309	ENDIF
[1960]	1310	IF ( passive_scalar ) s_p = s
[181]	1311	!
[4648]	1312	!-- Allthough tendency arrays are set in prognostic_equations, they have have to be predefined
	1313	!-- here because they are used (but multiplied with 0) there before they are set.
[2696]	1314	tpt_m = 0.0_wp; tu_m = 0.0_wp; tv_m = 0.0_wp; tw_m = 0.0_wp
[1960]	1315	IF ( humidity ) THEN
[1340]	1316	tq_m = 0.0_wp
[1053]	1317	ENDIF
[1960]	1318	IF ( passive_scalar ) ts_m = 0.0_wp
[181]	1319
[4648]	1320	IF ( debug_output ) THEN
	1321	CALL debug_message( 'initializing in case of restart / cyclic_fill', 'end' )
	1322	ENDIF
[1384]	1323
[1]	1324	ELSE
	1325	!
	1326	!-- Actually this part of the programm should not be reached
[254]	1327	message_string = 'unknown initializing problem'
	1328	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
[1]	1329	ENDIF
	1330
[151]	1331
	1332	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
[1]	1333	!
[151]	1334	!-- Initialize old timelevels needed for radiation boundary conditions
[3182]	1335	IF ( bc_radiation_l ) THEN
[151]	1336	u_m_l(:,:,:) = u(:,:,1:2)
	1337	v_m_l(:,:,:) = v(:,:,0:1)
	1338	w_m_l(:,:,:) = w(:,:,0:1)
	1339	ENDIF
[3182]	1340	IF ( bc_radiation_r ) THEN
[151]	1341	u_m_r(:,:,:) = u(:,:,nx-1:nx)
	1342	v_m_r(:,:,:) = v(:,:,nx-1:nx)
	1343	w_m_r(:,:,:) = w(:,:,nx-1:nx)
	1344	ENDIF
[3182]	1345	IF ( bc_radiation_s ) THEN
[151]	1346	u_m_s(:,:,:) = u(:,0:1,:)
	1347	v_m_s(:,:,:) = v(:,1:2,:)
	1348	w_m_s(:,:,:) = w(:,0:1,:)
	1349	ENDIF
[3182]	1350	IF ( bc_radiation_n ) THEN
[151]	1351	u_m_n(:,:,:) = u(:,ny-1:ny,:)
	1352	v_m_n(:,:,:) = v(:,ny-1:ny,:)
	1353	w_m_n(:,:,:) = w(:,ny-1:ny,:)
	1354	ENDIF
[4648]	1355
[151]	1356	ENDIF
[680]	1357
[667]	1358	!
	1359	!-- Calculate the initial volume flow at the right and north boundary
[709]	1360	IF ( conserve_volume_flow ) THEN
[151]	1361
[767]	1362	IF ( use_prescribed_profile_data ) THEN
[667]	1363
[1340]	1364	volume_flow_initial_l = 0.0_wp
	1365	volume_flow_area_l = 0.0_wp
[732]	1366
[667]	1367	IF ( nxr == nx ) THEN
	1368	DO j = nys, nyn
[2232]	1369	DO k = nzb+1, nzt
[4648]	1370	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	1371	u_init(k) * dzw(k) &
	1372	* MERGE( 1.0_wp, 0.0_wp, &
	1373	BTEST( wall_flags_total_0(k,j,nxr), 1 ) &
	1374	)
[2232]	1375
[4648]	1376	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
	1377	* MERGE( 1.0_wp, 0.0_wp, &
	1378	BTEST( wall_flags_total_0(k,j,nxr), 1 ) &
	1379	)
[767]	1380	ENDDO
	1381	ENDDO
	1382	ENDIF
[4648]	1383
[767]	1384	IF ( nyn == ny ) THEN
	1385	DO i = nxl, nxr
[2232]	1386	DO k = nzb+1, nzt
[4648]	1387	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	1388	v_init(k) * dzw(k) &
	1389	* MERGE( 1.0_wp, 0.0_wp, &
	1390	BTEST( wall_flags_total_0(k,nyn,i), 2 ) &
	1391	)
	1392	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
	1393	* MERGE( 1.0_wp, 0.0_wp, &
	1394	BTEST( wall_flags_total_0(k,nyn,i), 2 ) &
	1395	)
[767]	1396	ENDDO
	1397	ENDDO
	1398	ENDIF
	1399
	1400	#if defined( __parallel )
[4648]	1401	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1), 2, MPI_REAL, &
	1402	MPI_SUM, comm2d, ierr )
	1403	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), 2, MPI_REAL, MPI_SUM, &
	1404	comm2d, ierr )
[767]	1405
	1406	#else
	1407	volume_flow_initial = volume_flow_initial_l
	1408	volume_flow_area = volume_flow_area_l
[4648]	1409	#endif
[767]	1410
	1411	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
	1412
[1340]	1413	volume_flow_initial_l = 0.0_wp
	1414	volume_flow_area_l = 0.0_wp
[767]	1415
	1416	IF ( nxr == nx ) THEN
	1417	DO j = nys, nyn
[2232]	1418	DO k = nzb+1, nzt
[4648]	1419	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	1420	hom_sum(k,1,0) * dzw(k) &
	1421	* MERGE( 1.0_wp, 0.0_wp, &
	1422	BTEST( wall_flags_total_0(k,j,nx), 1 ) &
	1423	)
	1424	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
	1425	* MERGE( 1.0_wp, 0.0_wp, &
	1426	BTEST( wall_flags_total_0(k,j,nx), 1 ) &
	1427	)
[667]	1428	ENDDO
	1429	ENDDO
	1430	ENDIF
[4648]	1431
[667]	1432	IF ( nyn == ny ) THEN
	1433	DO i = nxl, nxr
[2232]	1434	DO k = nzb+1, nzt
[4648]	1435	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	1436	hom_sum(k,2,0) * dzw(k) &
	1437	* MERGE( 1.0_wp, 0.0_wp, &
	1438	BTEST( wall_flags_total_0(k,ny,i), 2 ) &
	1439	)
	1440	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
	1441	* MERGE( 1.0_wp, 0.0_wp, &
	1442	BTEST( wall_flags_total_0(k,ny,i), 2 ) &
	1443	)
[667]	1444	ENDDO
	1445	ENDDO
	1446	ENDIF
	1447
[732]	1448	#if defined( __parallel )
[4648]	1449	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1), 2, MPI_REAL, &
	1450	MPI_SUM, comm2d, ierr )
	1451	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), 2, MPI_REAL, MPI_SUM, &
	1452	comm2d, ierr )
[732]	1453
	1454	#else
	1455	volume_flow_initial = volume_flow_initial_l
	1456	volume_flow_area = volume_flow_area_l
[4648]	1457	#endif
[732]	1458
[667]	1459	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
	1460
[1340]	1461	volume_flow_initial_l = 0.0_wp
	1462	volume_flow_area_l = 0.0_wp
[732]	1463
[667]	1464	IF ( nxr == nx ) THEN
	1465	DO j = nys, nyn
[2232]	1466	DO k = nzb+1, nzt
[4648]	1467	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	1468	u(k,j,nx) * dzw(k) &
	1469	* MERGE( 1.0_wp, 0.0_wp, &
	1470	BTEST( wall_flags_total_0(k,j,nx), 1 ) &
	1471	)
	1472	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
	1473	* MERGE( 1.0_wp, 0.0_wp, &
	1474	BTEST( wall_flags_total_0(k,j,nx), 1 ) &
	1475	)
[667]	1476	ENDDO
	1477	ENDDO
	1478	ENDIF
[4648]	1479
[667]	1480	IF ( nyn == ny ) THEN
	1481	DO i = nxl, nxr
[2232]	1482	DO k = nzb+1, nzt
[4648]	1483	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	1484	v(k,ny,i) * dzw(k) &
	1485	* MERGE( 1.0_wp, 0.0_wp, &
	1486	BTEST( wall_flags_total_0(k,ny,i), 2 ) &
	1487	)
	1488	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
	1489	* MERGE( 1.0_wp, 0.0_wp, &
	1490	BTEST( wall_flags_total_0(k,ny,i), 2 ) &
	1491	)
[667]	1492	ENDDO
	1493	ENDDO
	1494	ENDIF
	1495
	1496	#if defined( __parallel )
[4648]	1497	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1), 2, MPI_REAL, &
	1498	MPI_SUM, comm2d, ierr )
	1499	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), 2, MPI_REAL, MPI_SUM, &
	1500	comm2d, ierr )
[667]	1501
	1502	#else
[732]	1503	volume_flow_initial = volume_flow_initial_l
	1504	volume_flow_area = volume_flow_area_l
[4648]	1505	#endif
[667]	1506
[732]	1507	ENDIF
	1508
[151]	1509	!
[4648]	1510	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated from u\|v_bulk instead
[680]	1511	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
	1512	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
	1513	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
	1514	ENDIF
[667]	1515
[680]	1516	ENDIF
[2232]	1517	!
[4648]	1518	!-- In the following, surface properties can be further initialized with input from static driver
	1519	!-- file.
	1520	!-- At the moment this affects only default surfaces. For example, roughness length or sensible /
	1521	!-- latent heat fluxes can be initialized heterogeneously for default surfaces. Therefore, a generic
	1522	!-- routine from netcdf_data_input_mod is called to read a 2D array.
[4150]	1523	IF ( input_pids_static ) THEN
	1524	!
[4151]	1525	!-- Allocate memory for possible static input
	1526	ALLOCATE( tmp_2d%var(nys:nyn,nxl:nxr) )
	1527	tmp_2d%var = 0.0_wp
	1528	!
[4150]	1529	!-- Open the static input file
[4151]	1530	#if defined( __netcdf )
[4648]	1531	CALL open_read_file( TRIM( input_file_static ) // &
	1532	TRIM( coupling_char ), pids_id )
	1533
[4186]	1534	CALL inquire_num_variables( pids_id, num_var_pids )
[4150]	1535	!
	1536	!-- Allocate memory to store variable names and read them
[4186]	1537	ALLOCATE( vars_pids(1:num_var_pids) )
	1538	CALL inquire_variable_names( pids_id, vars_pids )
[4150]	1539	!
[4648]	1540	!-- Input roughness length.
[4186]	1541	IF ( check_existence( vars_pids, 'z0' ) ) THEN
[4150]	1542	!
	1543	!-- Read _FillValue attribute
[4648]	1544	CALL get_attribute( pids_id, char_fill, tmp_2d%fill, .FALSE., 'z0' )
	1545	!
	1546	!-- Read variable
	1547	CALL get_variable( pids_id, 'z0', tmp_2d%var, nxl, nxr, nys, nyn )
	1548	!
	1549	!-- Initialize roughness length. Note, z0 will be only initialized at default-type surfaces.
	1550	!-- At natural or urban z0 is implicitly initialized by the respective parameter lists.
	1551	!-- Initialize horizontal surface elements.
	1552	CALL init_single_surface_properties( surf_def_h(0)%z0, tmp_2d%var, surf_def_h(0)%ns, &
	1553	tmp_2d%fill, surf_def_h(0)%i, surf_def_h(0)%j )
	1554	!
	1555	!-- Initialize roughness also at vertical surface elements.
	1556	!-- Note, the actual 2D input arrays are only defined on the subdomain. Therefore, pass the
	1557	!-- index arrays with their respective offset values.
	1558	DO l = 0, 3
	1559	CALL init_single_surface_properties( surf_def_v(l)%z0, tmp_2d%var, surf_def_v(l)%ns, &
	1560	tmp_2d%fill, surf_def_v(l)%i+surf_def_v(l)%ioff, &
	1561	surf_def_v(l)%j+surf_def_v(l)%joff )
[4150]	1562	ENDDO
[4648]	1563
[4150]	1564	ENDIF
	1565	!
[4648]	1566	!-- Input surface sensible heat flux.
[4514]	1567	IF ( check_existence( vars_pids, 'shf' ) ) THEN
	1568	!
	1569	!-- Read _FillValue attribute
[4648]	1570	CALL get_attribute( pids_id, char_fill, tmp_2d%fill, .FALSE., 'shf' )
[4514]	1571	!
	1572	!-- Read variable
[4648]	1573	CALL get_variable( pids_id, 'shf', tmp_2d%var, nxl, nxr, nys, nyn )
[4514]	1574	!
[4648]	1575	!-- Initialize heat flux. Note, shf will be only initialized at default-type surfaces. At
	1576	!-- natural or urban shf is implicitly initialized by the respective parameter lists.
[4514]	1577	!-- Initialize horizontal surface elements.
[4648]	1578	CALL init_single_surface_properties( surf_def_h(0)%shf, tmp_2d%var, surf_def_h(0)%ns, &
	1579	tmp_2d%fill, surf_def_h(0)%i, surf_def_h(0)%j )
[4514]	1580	!
	1581	!-- Initialize heat flux also at vertical surface elements.
[4648]	1582	!-- Note, the actual 2D input arrays are only defined on the subdomain. Therefore, pass the
	1583	!-- index arrays with their respective offset values.
[4514]	1584	DO l = 0, 3
[4648]	1585	CALL init_single_surface_properties( surf_def_v(l)%shf, tmp_2d%var, surf_def_v(l)%ns, &
	1586	tmp_2d%fill, surf_def_v(l)%i+surf_def_v(l)%ioff, &
	1587	surf_def_v(l)%j+surf_def_v(l)%joff )
[4514]	1588	ENDDO
	1589
	1590	ENDIF
	1591	!
[4648]	1592	!-- Input surface sensible heat flux.
[4514]	1593	IF ( check_existence( vars_pids, 'qsws' ) ) THEN
	1594	!
	1595	!-- Read _FillValue attribute
	1596	CALL get_attribute( pids_id, char_fill, tmp_2d%fill, &
	1597	.FALSE., 'qsws' )
	1598	!
	1599	!-- Read variable
	1600	CALL get_variable( pids_id, 'qsws', tmp_2d%var, &
	1601	nxl, nxr, nys, nyn )
	1602	!
[4648]	1603	!-- Initialize latent heat flux. Note, qsws will be only initialized at default-type surfaces.
	1604	!-- At natural or urban qsws is implicitly initialized by the respective parameter lists.
[4514]	1605	!-- Initialize horizontal surface elements.
[4648]	1606	CALL init_single_surface_properties( surf_def_h(0)%qsws, tmp_2d%var, surf_def_h(0)%ns, &
	1607	tmp_2d%fill, surf_def_h(0)%i, surf_def_h(0)%j )
[4514]	1608	!
	1609	!-- Initialize latent heat flux also at vertical surface elements.
[4648]	1610	!-- Note, the actual 2D input arrays are only defined on the subdomain. Therefore, pass the
	1611	!-- index arrays with their respective offset values.
[4514]	1612	DO l = 0, 3
[4648]	1613	CALL init_single_surface_properties( surf_def_v(l)%qsws, tmp_2d%var, surf_def_v(l)%ns,&
	1614	tmp_2d%fill, surf_def_v(l)%i+surf_def_v(l)%ioff, &
	1615	surf_def_v(l)%j+surf_def_v(l)%joff )
[4514]	1616	ENDDO
	1617
	1618	ENDIF
	1619	!
[4648]	1620	!-- Additional variables, can be initialized the
[4150]	1621	!-- same way.
[4514]	1622
[4150]	1623	!
[4187]	1624	!-- Finally, close the input file and deallocate temporary arrays
	1625	DEALLOCATE( vars_pids )
[4648]	1626
[4186]	1627	CALL close_input_file( pids_id )
[4151]	1628	#endif
	1629	DEALLOCATE( tmp_2d%var )
[4150]	1630	ENDIF
	1631	!
[4648]	1632	!-- Finally, if random_heatflux is set, disturb shf at horizontal surfaces. Actually, this should be
	1633	!-- done in surface_mod, where all other initializations of surface quantities are done. However,
	1634	!-- this would create a ring dependency, hence, it is done here. Maybe delete disturb_heatflux and
	1635	!-- tranfer the respective code directly into the initialization in surface_mod.
	1636	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
[2232]	1637	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
[4648]	1638
	1639	IF ( use_surface_fluxes .AND. constant_heatflux .AND. random_heatflux ) THEN
[2232]	1640	IF ( surf_def_h(0)%ns >= 1 ) CALL disturb_heatflux( surf_def_h(0) )
[4671]	1641	IF ( surf_lsm_h(0)%ns >= 1 ) CALL disturb_heatflux( surf_lsm_h(0) )
	1642	IF ( surf_usm_h(0)%ns >= 1 ) CALL disturb_heatflux( surf_usm_h(0) )
[2232]	1643	ENDIF
	1644	ENDIF
[680]	1645
[787]	1646	!
[4648]	1647	!-- Compute total sum of grid points and the mean surface level height for each statistic region.
	1648	!-- These are mainly used for horizontal averaging of turbulence statistics.
	1649	!-- ngp_2dh: number of grid points of a horizontal cross section through the respective statistic
	1650	!-- region
[3747]	1651	!-- ngp_3d: number of grid points of the respective statistic region
[2696]	1652	ngp_2dh_outer_l = 0
	1653	ngp_2dh_outer = 0
	1654	ngp_2dh_s_inner_l = 0
	1655	ngp_2dh_s_inner = 0
	1656	ngp_2dh_l = 0
	1657	ngp_2dh = 0
	1658	ngp_3d_inner_l = 0.0_wp
	1659	ngp_3d_inner = 0
	1660	ngp_3d = 0
	1661	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
	1662
	1663	mean_surface_level_height = 0.0_wp
	1664	mean_surface_level_height_l = 0.0_wp
	1665	!
	1666	!-- To do: New concept for these non-topography grid points!
	1667	DO sr = 0, statistic_regions
	1668	DO i = nxl, nxr
	1669	DO j = nys, nyn
	1670	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
	1671	!
	1672	!-- All xy-grid points
	1673	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
	1674	!
[4648]	1675	!-- Determine mean surface-level height. In case of downward-facing walls are present,
	1676	!-- more than one surface level exist.
	1677	!-- In this case, use the lowest surface-level height.
	1678	IF ( surf_def_h(0)%start_index(j,i) <= surf_def_h(0)%end_index(j,i) ) THEN
[2696]	1679	m = surf_def_h(0)%start_index(j,i)
	1680	k = surf_def_h(0)%k(m)
[4648]	1681	mean_surface_level_height_l(sr) = mean_surface_level_height_l(sr) + zw(k-1)
[2696]	1682	ENDIF
[4671]	1683	IF ( surf_lsm_h(0)%start_index(j,i) <= surf_lsm_h(0)%end_index(j,i) ) THEN
	1684	m = surf_lsm_h(0)%start_index(j,i)
	1685	k = surf_lsm_h(0)%k(m)
[4648]	1686	mean_surface_level_height_l(sr) = mean_surface_level_height_l(sr) + zw(k-1)
[2696]	1687	ENDIF
[4671]	1688	IF ( surf_usm_h(0)%start_index(j,i) <= surf_usm_h(0)%end_index(j,i) ) THEN
	1689	m = surf_usm_h(0)%start_index(j,i)
	1690	k = surf_usm_h(0)%k(m)
[4648]	1691	mean_surface_level_height_l(sr) = mean_surface_level_height_l(sr) + zw(k-1)
[2696]	1692	ENDIF
	1693
	1694	k_surf = k - 1
	1695
	1696	DO k = nzb, nzt+1
	1697	!
	1698	!-- xy-grid points above topography
[4648]	1699	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + &
	1700	MERGE( 1, 0, BTEST( wall_flags_total_0(k,j,i), 24 ) )
[2696]	1701
[4648]	1702	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + &
	1703	MERGE( 1, 0, BTEST( wall_flags_total_0(k,j,i), 22 ) )
[2696]	1704
	1705	ENDDO
	1706	!
	1707	!-- All grid points of the total domain above topography
	1708	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + ( nz - k_surf + 2 )
	1709
	1710
	1711
	1712	ENDIF
	1713	ENDDO
	1714	ENDDO
	1715	ENDDO
[3747]	1716
[2696]	1717	sr = statistic_regions + 1
	1718	#if defined( __parallel )
	1719	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
[4648]	1720	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
	1721	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
	1722	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, MPI_INTEGER, MPI_SUM, &
[2696]	1723	comm2d, ierr )
	1724	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
[4648]	1725	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), (nz+2)*sr, MPI_INTEGER, &
	1726	MPI_SUM, comm2d, ierr )
[2696]	1727	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
[4648]	1728	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, MPI_SUM, comm2d, &
	1729	ierr )
[2696]	1730	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
	1731	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
[4648]	1732	CALL MPI_ALLREDUCE( mean_surface_level_height_l(0), mean_surface_level_height(0), sr, MPI_REAL,&
[2696]	1733	MPI_SUM, comm2d, ierr )
	1734	mean_surface_level_height = mean_surface_level_height / REAL( ngp_2dh )
	1735	#else
	1736	ngp_2dh = ngp_2dh_l
	1737	ngp_2dh_outer = ngp_2dh_outer_l
	1738	ngp_2dh_s_inner = ngp_2dh_s_inner_l
	1739	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
	1740	mean_surface_level_height = mean_surface_level_height_l / REAL( ngp_2dh_l )
	1741	#endif
	1742
[4648]	1743	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
[2696]	1744	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
	1745
	1746	!
[4648]	1747	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics, buoyancy, etc. A
	1748	!-- zero value will occur for cases where all grid points of the respective subdomain lie below the
	1749	!-- surface topography
	1750	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
	1751	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), ngp_3d_inner(:) )
	1752	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
[2696]	1753
[4648]	1754	DEALLOCATE( mean_surface_level_height_l, ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, &
	1755	ngp_3d_inner_tmp )
[4548]	1756
[2696]	1757	!
[4648]	1758	!-- Initializae 3D offline nesting in COSMO model and read data from
[3347]	1759	!-- external NetCDF file.
	1760	IF ( nesting_offline ) CALL nesting_offl_init
	1761	!
[787]	1762	!-- Initialize quantities for special advections schemes
	1763	CALL init_advec
[680]	1764
[667]	1765	!
[680]	1766	!-- Impose random perturbation on the horizontal velocity field and then
	1767	!-- remove the divergences from the velocity field at the initial stage
[4648]	1768	IF ( create_disturbances .AND. disturbance_energy_limit /= 0.0_wp .AND. &
	1769	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
[680]	1770	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
	1771
[4648]	1772	IF ( debug_output ) THEN
	1773	CALL debug_message( 'creating disturbances + applying pressure solver', 'start' )
	1774	ENDIF
[3849]	1775	!
	1776	!-- Needed for both disturb_field and pres
	1777	!$ACC DATA &
	1778	!$ACC CREATE(tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1779	!$ACC COPY(u(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1780	!$ACC COPY(v(nzb:nzt+1,nysg:nyng,nxlg:nxrg))
	1781
[2232]	1782	CALL disturb_field( 'u', tend, u )
	1783	CALL disturb_field( 'v', tend, v )
[1384]	1784
[3849]	1785	!$ACC DATA &
	1786	!$ACC CREATE(d(nzb+1:nzt,nys:nyn,nxl:nxr)) &
	1787	!$ACC COPY(w(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1788	!$ACC COPY(p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1789	!$ACC COPYIN(rho_air(nzb:nzt+1), rho_air_zw(nzb:nzt+1)) &
	1790	!$ACC COPYIN(ddzu(1:nzt+1), ddzw(1:nzt+1)) &
[4346]	1791	!$ACC COPYIN(wall_flags_total_0(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
[3849]	1792	!$ACC COPYIN(bc_h(0:1)) &
	1793	!$ACC COPYIN(bc_h(0)%i(1:bc_h(0)%ns)) &
	1794	!$ACC COPYIN(bc_h(0)%j(1:bc_h(0)%ns)) &
	1795	!$ACC COPYIN(bc_h(0)%k(1:bc_h(0)%ns)) &
	1796	!$ACC COPYIN(bc_h(1)%i(1:bc_h(1)%ns)) &
	1797	!$ACC COPYIN(bc_h(1)%j(1:bc_h(1)%ns)) &
	1798	!$ACC COPYIN(bc_h(1)%k(1:bc_h(1)%ns))
	1799
[680]	1800	n_sor = nsor_ini
	1801	CALL pres
	1802	n_sor = nsor
[1384]	1803
[3849]	1804	!$ACC END DATA
	1805	!$ACC END DATA
	1806
[4648]	1807	IF ( debug_output ) THEN
	1808	CALL debug_message( 'creating disturbances + applying pressure solver', 'end' )
	1809	ENDIF
[3987]	1810
[680]	1811	ENDIF
	1812
[3294]	1813	IF ( .NOT. ocean_mode ) THEN
[3274]	1814
	1815	ALLOCATE( hyp(nzb:nzt+1) )
	1816	ALLOCATE( d_exner(nzb:nzt+1) )
	1817	ALLOCATE( exner(nzb:nzt+1) )
	1818	ALLOCATE( hyrho(nzb:nzt+1) )
[1849]	1819	!
[3274]	1820	!-- Check temperature in case of too large domain height
	1821	DO k = nzb, nzt+1
[4648]	1822	IF ( ( pt_surface * exner_function( surface_pressure * 100.0_wp ) - g/c_p * zu(k) ) &
	1823	< 0.0_wp ) THEN
	1824	WRITE( message_string, * ) 'absolute temperature < 0.0 at zu(', k, ') = ', zu(k)
[3685]	1825	CALL message( 'init_3d_model', 'PA0142', 1, 2, 0, 6, 0 )
[3274]	1826	ENDIF
	1827	ENDDO
	1828
	1829	!
	1830	!-- Calculate vertical profile of the hydrostatic pressure (hyp)
[4648]	1831	hyp = barometric_formula( zu, pt_surface * exner_function( surface_pressure * 100.0_wp ),&
	1832	surface_pressure * 100.0_wp )
	1833	d_exner = exner_function_invers( hyp )
	1834	exner = 1.0_wp / exner_function_invers( hyp )
	1835	hyrho = ideal_gas_law_rho_pt( hyp, pt_init )
[3274]	1836	!
	1837	!-- Compute reference density
[4648]	1838	rho_surface = ideal_gas_law_rho( surface_pressure * 100.0_wp, &
	1839	pt_surface * exner_function( surface_pressure * 100.0_wp ) )
[3274]	1840
[96]	1841	ENDIF
[1]	1842
	1843	!
	1844	!-- If required, initialize particles
[3159]	1845	IF ( agents_active ) CALL mas_init
	1846	!
[3937]	1847	!-- Initialization of synthetic turbulence generator
	1848	IF ( use_syn_turb_gen ) CALL stg_init
[2696]	1849	!
[3685]	1850	!-- Initializing actions for all other modules
	1851	CALL module_interface_init
[2696]	1852	!
[4648]	1853	!-- Initialize surface layer (done after LSM as roughness length are required for initialization
[3685]	1854	IF ( constant_flux_layer ) CALL init_surface_layer_fluxes
[2977]	1855	!
[3421]	1856	!-- Initialize surface data output
[3685]	1857	IF ( surface_output ) CALL surface_data_output_init
[3472]	1858	!
[4648]	1859	!-- Initialize the ws-scheme.
	1860	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
[3711]	1861	!
	1862	!-- Perform post-initializing checks for all other modules
	1863	CALL module_interface_init_checks
[1]	1864
	1865	!
[4648]	1866	!-- Initialize surface forcing corresponding to large-scale forcing. Therein,
[4548]	1867	!-- initialize heat-fluxes, etc. via datatype. Revise it later!
[4648]	1868	IF ( large_scale_forcing .AND. lsf_surf ) THEN
[4548]	1869	IF ( use_surface_fluxes .AND. constant_heatflux ) THEN
[4648]	1870	CALL ls_forcing_surf( simulated_time )
[4548]	1871	ENDIF
	1872	ENDIF
	1873	!
[4648]	1874	!-- Setting weighting factors for calculation of perturbation pressure and turbulent quantities from
	1875	!-- the RK substeps.
	1876	IF ( TRIM( timestep_scheme ) == 'runge-kutta-3' ) THEN ! for RK3-method
[709]	1877
[1322]	1878	weight_substep(1) = 1._wp/6._wp
	1879	weight_substep(2) = 3._wp/10._wp
	1880	weight_substep(3) = 8._wp/15._wp
[709]	1881
[1322]	1882	weight_pres(1) = 1._wp/3._wp
	1883	weight_pres(2) = 5._wp/12._wp
	1884	weight_pres(3) = 1._wp/4._wp
[709]	1885
[4648]	1886	ELSEIF ( TRIM( timestep_scheme ) == 'runge-kutta-2' ) THEN ! for RK2-method
[709]	1887
[1322]	1888	weight_substep(1) = 1._wp/2._wp
	1889	weight_substep(2) = 1._wp/2._wp
[4648]	1890
[1322]	1891	weight_pres(1) = 1._wp/2._wp
[4648]	1892	weight_pres(2) = 1._wp/2._wp
[709]	1893
[1001]	1894	ELSE ! for Euler-method
[709]	1895
[4648]	1896	weight_substep(1) = 1.0_wp
	1897	weight_pres(1) = 1.0_wp
[709]	1898
[673]	1899	ENDIF
	1900
	1901	!
[1]	1902	!-- Initialize Rayleigh damping factors
[1340]	1903	rdf = 0.0_wp
	1904	rdf_sc = 0.0_wp
	1905	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
[3294]	1906
	1907	IF ( .NOT. ocean_mode ) THEN
[108]	1908	DO k = nzb+1, nzt
	1909	IF ( zu(k) >= rayleigh_damping_height ) THEN
[4648]	1910	rdf(k) = rayleigh_damping_factor * &
	1911	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
	1912	/ ( zu(nzt) - rayleigh_damping_height ) ) &
	1913	)**2
[108]	1914	ENDIF
	1915	ENDDO
	1916	ELSE
[3294]	1917	!
[4648]	1918	!-- In ocean mode, rayleigh damping is applied in the lower part of the model domain
[108]	1919	DO k = nzt, nzb+1, -1
	1920	IF ( zu(k) <= rayleigh_damping_height ) THEN
[4648]	1921	rdf(k) = rayleigh_damping_factor * &
	1922	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
	1923	/ ( rayleigh_damping_height - zu(nzb+1) ) ) &
	1924	)**2
[108]	1925	ENDIF
	1926	ENDDO
	1927	ENDIF
[3294]	1928
[1]	1929	ENDIF
[785]	1930	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
[1]	1931
	1932	!
[4648]	1933	!-- Initialize the starting level and the vertical smoothing factor used for the external pressure
	1934	!-- gradient
[1340]	1935	dp_smooth_factor = 1.0_wp
[240]	1936	IF ( dp_external ) THEN
	1937	!
[4648]	1938	!-- Set the starting level dp_level_ind_b only if it has not been set before (e.g. in init_grid).
[240]	1939	IF ( dp_level_ind_b == 0 ) THEN
	1940	ind_array = MINLOC( ABS( dp_level_b - zu ) )
[4648]	1941	dp_level_ind_b = ind_array(1) - 1 + nzb
[240]	1942	! MINLOC uses lower array bound 1
	1943	ENDIF
	1944	IF ( dp_smooth ) THEN
[1340]	1945	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
[240]	1946	DO k = dp_level_ind_b+1, nzt
[4648]	1947	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
	1948	( REAL( k - dp_level_ind_b, KIND=wp ) / &
	1949	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
[240]	1950	ENDDO
	1951	ENDIF
	1952	ENDIF
	1953
	1954	!
[4648]	1955	!-- Initialize damping zone for the potential temperature in case of non-cyclic lateral boundaries.
	1956	!-- The damping zone has the maximum value at the inflow boundary and decreases to zero at
	1957	!-- pt_damping_width.
[1340]	1958	ptdf_x = 0.0_wp
	1959	ptdf_y = 0.0_wp
[1159]	1960	IF ( bc_lr_dirrad ) THEN
[996]	1961	DO i = nxl, nxr
[978]	1962	IF ( ( i * dx ) < pt_damping_width ) THEN
[4648]	1963	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
	1964	REAL( pt_damping_width - i * dx, KIND=wp ) / &
	1965	REAL( pt_damping_width, KIND=wp ) ) )**2
	1966	ENDIF
[73]	1967	ENDDO
[1159]	1968	ELSEIF ( bc_lr_raddir ) THEN
[996]	1969	DO i = nxl, nxr
[978]	1970	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
[4648]	1971	ptdf_x(i) = pt_damping_factor * SIN( pi * 0.5_wp * &
	1972	( ( i - nx ) * dx + pt_damping_width ) / &
	1973	REAL( pt_damping_width, KIND=wp ) )**2
[73]	1974	ENDIF
[4648]	1975	ENDDO
[1159]	1976	ELSEIF ( bc_ns_dirrad ) THEN
[996]	1977	DO j = nys, nyn
[978]	1978	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
[4648]	1979	ptdf_y(j) = pt_damping_factor * SIN( pi * 0.5_wp * &
	1980	( ( j - ny ) * dy + pt_damping_width ) / &
	1981	REAL( pt_damping_width, KIND=wp ) )**2
[1]	1982	ENDIF
[4648]	1983	ENDDO
[1159]	1984	ELSEIF ( bc_ns_raddir ) THEN
[996]	1985	DO j = nys, nyn
[978]	1986	IF ( ( j * dy ) < pt_damping_width ) THEN
[4648]	1987	ptdf_y(j) = pt_damping_factor * SIN( pi * 0.5_wp * &
	1988	( pt_damping_width - j * dy ) / &
	1989	REAL( pt_damping_width, KIND=wp ) )**2
[1]	1990	ENDIF
[73]	1991	ENDDO
[1]	1992	ENDIF
[51]	1993
[1]	1994	!
[4648]	1995	!-- Input binary data file is not needed anymore. This line must be placed after call of user_init!
[1]	1996	CALL close_file( 13 )
[2934]	1997	!
[4648]	1998	!-- In case of nesting, put an barrier to assure that all parent and child domains finished
	1999	!-- initialization.
[2934]	2000	#if defined( __parallel )
	2001	IF ( nested_run ) CALL MPI_BARRIER( MPI_COMM_WORLD, ierr )
	2002	#endif
[1]	2003
[2934]	2004
[3987]	2005	CALL location_message( 'model initialization', 'finished' )
[1]	2006
	2007	END SUBROUTINE init_3d_model

Note: See TracBrowser for help on using the repository browser.

Context Navigation

source: palm/trunk/SOURCE/init_3d_model.f90 @ 4782

Download in other formats: