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init_3d_model.f90 @ 4856

Last change on this file since 4856 was 4848, checked in by gronemeier, 3 years ago

bugfix: removed syn_turb_gen from restart files, replaced use_syn_turb_gen by syn_turb_gen

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/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: 84.4 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	!
[4828]	16	! Copyright 1997-2021 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 4848 2021-01-21 15:51:51Z raasch $
[4848]	26	! replaced use_syn_turb_gen by syn_turb_gen
	27	!
	28	! 4845 2021-01-18 11:15:37Z raasch
[4845]	29	! removed allocation and initialization of arrays required for radiation boundary conditions
	30	!
	31	! 4828 2021-01-05 11:21:41Z Giersch
[4791]	32	! Add possibility to initialize surface flux of passive scalar via static driver
	33	!
	34	! 4783 2020-11-13 13:58:45Z raasch
[4783]	35	! bugfix for reading restart data with MPI-I/O (does not work with blockwise I/O)
	36	!
	37	! 4680 2020-09-16 10:20:34Z gronemeier
[4680]	38	! Add option to fix date or time of the simulation
	39	!
	40	! 4671 2020-09-09 20:27:58Z pavelkrc
[4671]	41	! Implementation of downward facing USM and LSM surfaces
	42	!
	43	! 4648 2020-08-25 07:52:08Z raasch
[4648]	44	! file re-formatted to follow the PALM coding standard
	45	!
	46	! 4548 2020-05-28 19:36:45Z suehring
[4548]	47	! Bugfix, move call for lsf_forcing_surf after lsf_init is called
[4648]	48	!
[4548]	49	! 4514 2020-04-30 16:29:59Z suehring
[4648]	50	! Add possibility to initialize surface sensible and latent heat fluxes via a static driver.
	51	!
[4514]	52	! 4493 2020-04-10 09:49:43Z pavelkrc
[4648]	53	! Overwrite u_init, v_init, pt_init, q_init and s_init with hom for all cyclic_fill-cases, not only
	54	! for turbulent_inflow = .TRUE.
	55	!
[4365]	56	! 4360 2020-01-07 11:25:50Z suehring
[4648]	57	! Introduction of wall_flags_total_0, which currently sets bits based on static topography
	58	! information used in wall_flags_static_0
	59	!
[4346]	60	! 4329 2019-12-10 15:46:36Z motisi
[4329]	61	! Renamed wall_flags_0 to wall_flags_static_0
[4648]	62	!
[4329]	63	! 4286 2019-10-30 16:01:14Z resler
[4227]	64	! implement new palm_date_time_mod
[4648]	65	!
[4227]	66	! 4223 2019-09-10 09:20:47Z gronemeier
[4648]	67	! Deallocate temporary string array since it may be re-used to read different input data in other
	68	! modules
	69	!
[4187]	70	! 4186 2019-08-23 16:06:14Z suehring
[4648]	71	! Design change, use variables defined in netcdf_data_input_mod to read netcd variables rather than
	72	! define local ones.
	73	!
[4186]	74	! 4185 2019-08-23 13:49:38Z oliver.maas
[4185]	75	! For initializing_actions = ' cyclic_fill':
[4648]	76	! Overwrite u_init, v_init, pt_init, q_init and s_init with the (temporally) and horizontally
	77	! averaged vertical profiles from the end of the prerun, because these profiles shall be used as the
	78	! basic state for the rayleigh damping and the pt_damping.
	79	!
[4185]	80	! 4182 2019-08-22 15:20:23Z scharf
[4182]	81	! Corrected "Former revisions" section
[4648]	82	!
[4182]	83	! 4168 2019-08-16 13:50:17Z suehring
[4168]	84	! Replace function get_topography_top_index by topo_top_ind
[4648]	85	!
[4168]	86	! 4151 2019-08-09 08:24:30Z suehring
[4151]	87	! Add netcdf directive around input calls (fix for last commit)
[4648]	88	!
[4151]	89	! 4150 2019-08-08 20:00:47Z suehring
[4648]	90	! Input of additional surface variables independent on land- or urban-surface model
	91	!
[4150]	92	! 4131 2019-08-02 11:06:18Z monakurppa
[4131]	93	! Allocate sums and sums_l to allow profile output for salsa variables.
[4648]	94	!
[4131]	95	! 4130 2019-08-01 13:04:13Z suehring
[4648]	96	! Effectively reduce 3D initialization to 1D initial profiles. This is because 3D initialization
	97	! produces structures in the w-component that are correlated with the processor grid for some
	98	! unknown reason
	99	!
[4130]	100	! 4090 2019-07-11 15:06:47Z Giersch
[4090]	101	! Unused variables removed
[4648]	102	!
[4090]	103	! 4088 2019-07-11 13:57:56Z Giersch
[4088]	104	! Pressure and density profile calculations revised using basic functions
[4648]	105	!
[4088]	106	! 4048 2019-06-21 21:00:21Z knoop
[4028]	107	! Further modularization of particle code components
[4648]	108	!
[4028]	109	! 4017 2019-06-06 12:16:46Z schwenkel
[4648]	110	! Convert most location messages to debug messages to reduce output in job logfile to a minimum
	111	!
[3939]	112	! unused variable removed
[4648]	113	!
[3939]	114	! 3937 2019-04-29 15:09:07Z suehring
[4648]	115	! Move initialization of synthetic turbulence generator behind initialization of offline nesting.
	116	! Remove call for stg_adjust, as this is now already done in stg_init.
	117	!
[3937]	118	! 3900 2019-04-16 15:17:43Z suehring
[3900]	119	! Fix problem with LOD = 2 initialization
[4648]	120	!
[3900]	121	! 3885 2019-04-11 11:29:34Z kanani
[4648]	122	! Changes related to global restructuring of location messages and introduction of additional debug
	123	! messages
	124	!
[3885]	125	! 3849 2019-04-01 16:35:16Z knoop
[3747]	126	! Move initialization of rmask before initializing user_init_arrays
[4648]	127	!
[3747]	128	! 3711 2019-01-31 13:44:26Z knoop
[3711]	129	! Introduced module_interface_init_checks for post-init checks in modules
[4648]	130	!
[3711]	131	! 3700 2019-01-26 17:03:42Z knoop
[3685]	132	! Some interface calls moved to module_interface + cleanup
[4648]	133	!
[3685]	134	! 3648 2019-01-02 16:35:46Z suehring
[3648]	135	! Rename subroutines for surface-data output
[3569]	136	!
[4182]	137	! Revision 1.1 1998/03/09 16:22:22 raasch
	138	! Initial revision
	139	!
	140	!
[1]	141	! Description:
	142	! ------------
[1682]	143	!> Allocation of arrays and initialization of the 3D model via
	144	!> a) pre-run the 1D model
	145	!> or
	146	!> b) pre-set constant linear profiles
	147	!> or
	148	!> c) read values of a previous run
[4648]	149	!--------------------------------------------------------------------------------------------------!
[1682]	150	SUBROUTINE init_3d_model
[1]	151
[3298]	152
[667]	153	USE advec_ws
[1320]	154
[1]	155	USE arrays_3d
[1849]	156
[4648]	157	USE basic_constants_and_equations_mod, &
	158	ONLY: barometric_formula, c_p, exner_function, exner_function_invers, g, &
	159	ideal_gas_law_rho, ideal_gas_law_rho_pt, l_v, pi
[3274]	160
[4648]	161	USE bulk_cloud_model_mod, &
[3685]	162	ONLY: bulk_cloud_model
[3274]	163
[4648]	164	USE chem_modules, &
[3685]	165	ONLY: max_pr_cs ! ToDo: this dependency needs to be removed cause it is ugly #new_dom
[3298]	166
[1]	167	USE control_parameters
[3298]	168
[4648]	169	USE grid_variables, &
[2037]	170	ONLY: dx, dy, ddx2_mg, ddy2_mg
[2817]	171
[1]	172	USE indices
[3469]	173
[1320]	174	USE kinds
[4648]	175
	176	USE lsf_nudging_mod, &
[3685]	177	ONLY: ls_forcing_surf
[1849]	178
[4648]	179	USE model_1d_mod, &
[3241]	180	ONLY: init_1d_model, l1d, u1d, v1d
[2338]	181
[4648]	182	USE module_interface, &
	183	ONLY: module_interface_init_arrays, &
	184	module_interface_init, &
[3711]	185	module_interface_init_checks
[3685]	186
[4648]	187	USE multi_agent_system_mod, &
[3159]	188	ONLY: agents_active, mas_init
	189
[4648]	190	USE netcdf_interface, &
[3700]	191	ONLY: dots_max
[2696]	192
[4648]	193	USE netcdf_data_input_mod, &
	194	ONLY: char_fill, &
	195	check_existence, &
	196	close_input_file, &
	197	get_attribute, &
	198	get_variable, &
	199	init_3d, &
	200	input_pids_static, &
	201	inquire_num_variables, &
	202	inquire_variable_names, &
	203	input_file_static, &
	204	netcdf_data_input_init_3d, &
	205	num_var_pids, &
	206	open_read_file, &
	207	pids_id, &
	208	real_2d, &
[4186]	209	vars_pids
[4648]	210
	211	USE nesting_offl_mod, &
[3347]	212	ONLY: nesting_offl_init
[3294]	213
[4648]	214	USE palm_date_time_mod, &
[4680]	215	ONLY: init_date_time
[4227]	216
[1]	217	USE pegrid
[3298]	218
[3524]	219	#if defined( __parallel )
[4648]	220	USE pmc_interface, &
[2934]	221	ONLY: nested_run
[3524]	222	#endif
[2934]	223
[4648]	224	USE random_function_mod
[3685]	225
[4648]	226	USE random_generator_parallel, &
[2172]	227	ONLY: init_parallel_random_generator
[3685]	228
[4648]	229	USE read_restart_data_mod, &
	230	ONLY: rrd_local, rrd_read_parts_of_global
[3685]	231
[4648]	232	USE statistics, &
	233	ONLY: hom, hom_sum, mean_surface_level_height, pr_palm, rmask, statistic_regions, sums, &
	234	sums_divnew_l, sums_divold_l, sums_l, sums_l_l, sums_wsts_bc_l, ts_value, &
[1833]	235	weight_pres, weight_substep
[2259]	236
[4648]	237	USE synthetic_turbulence_generator_mod, &
[4848]	238	ONLY: stg_init
[3685]	239
[4648]	240	USE surface_layer_fluxes_mod, &
[1691]	241	ONLY: init_surface_layer_fluxes
[2232]	242
[4648]	243	USE surface_mod, &
	244	ONLY : init_single_surface_properties, &
	245	init_surface_arrays, &
	246	init_surfaces, &
	247	surf_def_h, &
	248	surf_def_v, &
	249	surf_lsm_h, &
[4168]	250	surf_usm_h
[3685]	251
[3849]	252	#if defined( _OPENACC )
[4648]	253	USE surface_mod, &
[3849]	254	ONLY : bc_h
	255	#endif
	256
[4648]	257	USE surface_data_output_mod, &
[3648]	258	ONLY: surface_data_output_init
[3685]	259
[2007]	260	USE transpose_indices
[1]	261
[4648]	262
[1]	263	IMPLICIT NONE
[4648]	264
[4150]	265	INTEGER(iwp) :: i !< grid index in x direction
	266	INTEGER(iwp) :: ind_array(1) !< dummy used to determine start index for external pressure forcing
	267	INTEGER(iwp) :: j !< grid index in y direction
	268	INTEGER(iwp) :: k !< grid index in z direction
	269	INTEGER(iwp) :: k_surf !< surface level index
[4648]	270	INTEGER(iwp) :: l !< running index over surface orientation
	271	INTEGER(iwp) :: m !< index of surface element in surface data type
[4150]	272	INTEGER(iwp) :: nz_u_shift !< topography-top index on u-grid, used to vertically shift initial profiles
	273	INTEGER(iwp) :: nz_v_shift !< topography-top index on v-grid, used to vertically shift initial profiles
	274	INTEGER(iwp) :: nz_w_shift !< topography-top index on w-grid, used to vertically shift initial profiles
	275	INTEGER(iwp) :: nz_s_shift !< topography-top index on scalar-grid, used to vertically shift initial profiles
	276	INTEGER(iwp) :: nz_u_shift_l !< topography-top index on u-grid, used to vertically shift initial profiles
	277	INTEGER(iwp) :: nz_v_shift_l !< topography-top index on v-grid, used to vertically shift initial profiles
	278	INTEGER(iwp) :: nz_w_shift_l !< topography-top index on w-grid, used to vertically shift initial profiles
	279	INTEGER(iwp) :: nz_s_shift_l !< topography-top index on scalar-grid, used to vertically shift initial profiles
	280	INTEGER(iwp) :: nzt_l !< index of top PE boundary for multigrid level
	281	INTEGER(iwp) :: sr !< index of statistic region
[1]	282
[4648]	283	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !< toal number of horizontal grid points in statistical region on
	284	!< subdomain
[1]	285
[4648]	286	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !< number of horizontal non-wall bounded grid points on
	287	!< subdomain
	288	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !< number of horizontal non-topography grid points on
	289	!< subdomain
[1]	290
[2037]	291	REAL(wp) :: dx_l !< grid spacing along x on different multigrid level
	292	REAL(wp) :: dy_l !< grid spacing along y on different multigrid level
	293
[4648]	294	REAL(wp), DIMENSION(:), ALLOCATABLE :: init_l !< dummy array used for averaging 3D data to obtain
	295	!< inital profiles
	296	REAL(wp), DIMENSION(:), ALLOCATABLE :: mean_surface_level_height_l !< mean surface level height on subdomain
	297	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !< total number of non-topography grid points on subdomain
	298	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !< total number of non-topography grid points
	299	REAL(wp), DIMENSION(:), ALLOCATABLE :: p_hydrostatic !< hydrostatic pressure
	300
[3547]	301	REAL(wp), DIMENSION(1:3) :: volume_flow_area_l !< area of lateral and top model domain surface on local subdomain
	302	REAL(wp), DIMENSION(1:3) :: volume_flow_initial_l !< initial volume flow into model domain
[1]	303
[4648]	304	TYPE(real_2d) :: tmp_2d !< temporary variable to input additional surface-data from static file
[1]	305
[3987]	306	CALL location_message( 'model initialization', 'start' )
[4227]	307	!
	308	!-- Set reference date-time
[4680]	309	CALL init_date_time( date_time_str=origin_date_time, &
	310	use_fixed_date=use_fixed_date, &
	311	use_fixed_time=use_fixed_time )
[3987]	312
	313	IF ( debug_output ) CALL debug_message( 'allocating arrays', 'start' )
[1]	314	!
	315	!-- Allocate arrays
[4648]	316	ALLOCATE( mean_surface_level_height(0:statistic_regions), &
	317	mean_surface_level_height_l(0:statistic_regions), &
	318	ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
	319	ngp_3d(0:statistic_regions), &
	320	ngp_3d_inner(0:statistic_regions), &
	321	ngp_3d_inner_l(0:statistic_regions), &
	322	ngp_3d_inner_tmp(0:statistic_regions), &
	323	sums_divnew_l(0:statistic_regions), &
[1]	324	sums_divold_l(0:statistic_regions) )
[1195]	325	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
[4648]	326	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
	327	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
	328	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
	329	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
	330	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
	331	sums(nzb:nzt+1,pr_palm+max_pr_user+max_pr_cs+max_pr_salsa), &
[4131]	332	sums_l(nzb:nzt+1,pr_palm+max_pr_user+max_pr_cs+max_pr_salsa,0:threads_per_task-1), &
[4648]	333	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
[3700]	334	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions) )
	335	ALLOCATE( ts_value(dots_max,0:statistic_regions) )
[978]	336	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
[1]	337
[4648]	338	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
	339	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[1010]	340	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	341
[4648]	342	ALLOCATE( pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	343	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	344	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	345	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	346	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	347	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	348	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	349	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	350	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	351	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[667]	352	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1788]	353	IF ( .NOT. neutral ) THEN
[1032]	354	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	355	ENDIF
[673]	356	!
[3747]	357	!-- Pre-set masks for regional statistics. Default is the total model domain.
[4648]	358	!-- Ghost points are excluded because counting values at the ghost boundaries would bias the
	359	!-- statistics.
[3747]	360	rmask = 1.0_wp
	361	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
	362	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
	363	!
[4648]	364	!-- Following array is required for perturbation pressure within the iterative pressure solvers. For
	365	!-- the multistep schemes (Runge-Kutta), array p holds the weighted average of the substeps and
	366	!-- cannot be used in the Poisson solver.
[707]	367	IF ( psolver == 'sor' ) THEN
	368	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1575]	369	ELSEIF ( psolver(1:9) == 'multigrid' ) THEN
[707]	370	!
	371	!-- For performance reasons, multigrid is using one ghost layer only
	372	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
[673]	373	ENDIF
[1]	374
[1111]	375	!
	376	!-- Array for storing constant coeffficients of the tridiagonal solver
	377	IF ( psolver == 'poisfft' ) THEN
[1212]	378	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
[1111]	379	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
	380	ENDIF
	381
[1960]	382	IF ( humidity ) THEN
[1]	383	!
[1960]	384	!-- 3D-humidity
[4648]	385	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	386	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	387	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	388	vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	389	ENDIF
	390
[1960]	391	IF ( passive_scalar ) THEN
[1]	392
[1960]	393	!
	394	!-- 3D scalar arrays
[4648]	395	ALLOCATE( s_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	396	s_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[1960]	397	s_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[3636]	398
[1960]	399	ENDIF
	400
[1]	401	!
[4648]	402	!-- Allocate and set 1d-profiles for Stokes drift velocity. It may be set to non-zero values later
	403	!-- in ocean_init.
	404	ALLOCATE( u_stokes_zu(nzb:nzt+1), u_stokes_zw(nzb:nzt+1), &
[3302]	405	v_stokes_zu(nzb:nzt+1), v_stokes_zw(nzb:nzt+1) )
	406	u_stokes_zu(:) = 0.0_wp
	407	u_stokes_zw(:) = 0.0_wp
	408	v_stokes_zu(:) = 0.0_wp
	409	v_stokes_zw(:) = 0.0_wp
	410
	411	!
[2037]	412	!-- Allocation of anelastic and Boussinesq approximation specific arrays
	413	ALLOCATE( p_hydrostatic(nzb:nzt+1) )
	414	ALLOCATE( rho_air(nzb:nzt+1) )
	415	ALLOCATE( rho_air_zw(nzb:nzt+1) )
	416	ALLOCATE( drho_air(nzb:nzt+1) )
	417	ALLOCATE( drho_air_zw(nzb:nzt+1) )
	418	!
[4648]	419	!-- Density profile calculation for anelastic and Boussinesq approximation.
	420	!-- In case of a Boussinesq approximation, a constant density is calculated mainly for output
	421	!-- purposes. This density does not need to be considered in the model's system of equations.
[4088]	422	IF ( TRIM( approximation ) == 'anelastic' ) THEN
[2037]	423	DO k = nzb, nzt+1
[4648]	424	p_hydrostatic(k) = barometric_formula(zu(k), pt_surface * &
	425	exner_function(surface_pressure * 100.0_wp), &
	426	surface_pressure * 100.0_wp)
	427
[4088]	428	rho_air(k) = ideal_gas_law_rho_pt(p_hydrostatic(k), pt_init(k))
[2037]	429	ENDDO
[4648]	430
[2037]	431	DO k = nzb, nzt
	432	rho_air_zw(k) = 0.5_wp * ( rho_air(k) + rho_air(k+1) )
	433	ENDDO
[4648]	434
	435	rho_air_zw(nzt+1) = rho_air_zw(nzt) + 2.0_wp * ( rho_air(nzt+1) - rho_air_zw(nzt) )
	436
[2037]	437	ELSE
[2252]	438	DO k = nzb, nzt+1
[4648]	439	p_hydrostatic(k) = barometric_formula(zu(nzb), pt_surface * &
	440	exner_function(surface_pressure * 100.0_wp), &
	441	surface_pressure * 100.0_wp)
[4088]	442
	443	rho_air(k) = ideal_gas_law_rho_pt(p_hydrostatic(k), pt_init(nzb))
[2252]	444	ENDDO
[4648]	445
[2252]	446	DO k = nzb, nzt
	447	rho_air_zw(k) = 0.5_wp * ( rho_air(k) + rho_air(k+1) )
	448	ENDDO
[4648]	449
	450	rho_air_zw(nzt+1) = rho_air_zw(nzt) + 2.0_wp * ( rho_air(nzt+1) - rho_air_zw(nzt) )
	451
[2037]	452	ENDIF
[2696]	453	!
[4648]	454	!-- Compute the inverse density array in order to avoid expencive divisions
[2037]	455	drho_air = 1.0_wp / rho_air
	456	drho_air_zw = 1.0_wp / rho_air_zw
	457
	458	!
	459	!-- Allocation of flux conversion arrays
	460	ALLOCATE( heatflux_input_conversion(nzb:nzt+1) )
	461	ALLOCATE( waterflux_input_conversion(nzb:nzt+1) )
	462	ALLOCATE( momentumflux_input_conversion(nzb:nzt+1) )
	463	ALLOCATE( heatflux_output_conversion(nzb:nzt+1) )
	464	ALLOCATE( waterflux_output_conversion(nzb:nzt+1) )
	465	ALLOCATE( momentumflux_output_conversion(nzb:nzt+1) )
	466
	467	!
[4648]	468	!-- Calculate flux conversion factors according to approximation and in-/output mode
[2037]	469	DO k = nzb, nzt+1
	470
	471	IF ( TRIM( flux_input_mode ) == 'kinematic' ) THEN
	472	heatflux_input_conversion(k) = rho_air_zw(k)
	473	waterflux_input_conversion(k) = rho_air_zw(k)
	474	momentumflux_input_conversion(k) = rho_air_zw(k)
	475	ELSEIF ( TRIM( flux_input_mode ) == 'dynamic' ) THEN
[3274]	476	heatflux_input_conversion(k) = 1.0_wp / c_p
[2037]	477	waterflux_input_conversion(k) = 1.0_wp / l_v
	478	momentumflux_input_conversion(k) = 1.0_wp
	479	ENDIF
	480
	481	IF ( TRIM( flux_output_mode ) == 'kinematic' ) THEN
	482	heatflux_output_conversion(k) = drho_air_zw(k)
	483	waterflux_output_conversion(k) = drho_air_zw(k)
	484	momentumflux_output_conversion(k) = drho_air_zw(k)
	485	ELSEIF ( TRIM( flux_output_mode ) == 'dynamic' ) THEN
[3274]	486	heatflux_output_conversion(k) = c_p
[2037]	487	waterflux_output_conversion(k) = l_v
	488	momentumflux_output_conversion(k) = 1.0_wp
	489	ENDIF
	490
	491	IF ( .NOT. humidity ) THEN
	492	waterflux_input_conversion(k) = 1.0_wp
	493	waterflux_output_conversion(k) = 1.0_wp
	494	ENDIF
	495
	496	ENDDO
	497
	498	!
[4648]	499	!-- In case of multigrid method, compute grid lengths and grid factors for the grid levels with
	500	!-- respective density on each grid.
[2037]	501	IF ( psolver(1:9) == 'multigrid' ) THEN
	502
	503	ALLOCATE( ddx2_mg(maximum_grid_level) )
	504	ALLOCATE( ddy2_mg(maximum_grid_level) )
	505	ALLOCATE( dzu_mg(nzb+1:nzt+1,maximum_grid_level) )
	506	ALLOCATE( dzw_mg(nzb+1:nzt+1,maximum_grid_level) )
	507	ALLOCATE( f1_mg(nzb+1:nzt,maximum_grid_level) )
	508	ALLOCATE( f2_mg(nzb+1:nzt,maximum_grid_level) )
	509	ALLOCATE( f3_mg(nzb+1:nzt,maximum_grid_level) )
	510	ALLOCATE( rho_air_mg(nzb:nzt+1,maximum_grid_level) )
	511	ALLOCATE( rho_air_zw_mg(nzb:nzt+1,maximum_grid_level) )
	512
	513	dzu_mg(:,maximum_grid_level) = dzu
	514	rho_air_mg(:,maximum_grid_level) = rho_air
[4648]	515	!
	516	!-- Next line to ensure an equally spaced grid.
[2037]	517	dzu_mg(1,maximum_grid_level) = dzu(2)
[4648]	518	rho_air_mg(nzb,maximum_grid_level) = rho_air(nzb) + (rho_air(nzb) - rho_air(nzb+1))
[2037]	519
	520	dzw_mg(:,maximum_grid_level) = dzw
	521	rho_air_zw_mg(:,maximum_grid_level) = rho_air_zw
	522	nzt_l = nzt
	523	DO l = maximum_grid_level-1, 1, -1
	524	dzu_mg(nzb+1,l) = 2.0_wp * dzu_mg(nzb+1,l+1)
	525	dzw_mg(nzb+1,l) = 2.0_wp * dzw_mg(nzb+1,l+1)
[4648]	526	rho_air_mg(nzb,l) = rho_air_mg(nzb,l+1) + ( rho_air_mg(nzb,l+1) - &
	527	rho_air_mg(nzb+1,l+1) )
	528	rho_air_zw_mg(nzb,l) = rho_air_zw_mg(nzb,l+1) + ( rho_air_zw_mg(nzb,l+1) - &
	529	rho_air_zw_mg(nzb+1,l+1) )
[2037]	530	rho_air_mg(nzb+1,l) = rho_air_mg(nzb+1,l+1)
	531	rho_air_zw_mg(nzb+1,l) = rho_air_zw_mg(nzb+1,l+1)
	532	nzt_l = nzt_l / 2
	533	DO k = 2, nzt_l+1
	534	dzu_mg(k,l) = dzu_mg(2k-2,l+1) + dzu_mg(2k-1,l+1)
	535	dzw_mg(k,l) = dzw_mg(2k-2,l+1) + dzw_mg(2k-1,l+1)
	536	rho_air_mg(k,l) = rho_air_mg(2*k-1,l+1)
	537	rho_air_zw_mg(k,l) = rho_air_zw_mg(2*k-1,l+1)
	538	ENDDO
	539	ENDDO
	540
	541	nzt_l = nzt
	542	dx_l = dx
	543	dy_l = dy
	544	DO l = maximum_grid_level, 1, -1
	545	ddx2_mg(l) = 1.0_wp / dx_l**2
	546	ddy2_mg(l) = 1.0_wp / dy_l**2
	547	DO k = nzb+1, nzt_l
	548	f2_mg(k,l) = rho_air_zw_mg(k,l) / ( dzu_mg(k+1,l) * dzw_mg(k,l) )
	549	f3_mg(k,l) = rho_air_zw_mg(k-1,l) / ( dzu_mg(k,l) * dzw_mg(k,l) )
[4648]	550	f1_mg(k,l) = 2.0_wp * ( ddx2_mg(l) + ddy2_mg(l) ) &
[2037]	551	* rho_air_mg(k,l) + f2_mg(k,l) + f3_mg(k,l)
	552	ENDDO
	553	nzt_l = nzt_l / 2
	554	dx_l = dx_l * 2.0_wp
	555	dy_l = dy_l * 2.0_wp
	556	ENDDO
	557
	558	ENDIF
	559
	560	!
[1299]	561	!-- 1D-array for large scale subsidence velocity
[1361]	562	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
	563	ALLOCATE ( w_subs(nzb:nzt+1) )
	564	w_subs = 0.0_wp
	565	ENDIF
[1299]	566
	567	!
[1]	568	!-- Initial assignment of the pointers
[1032]	569	IF ( .NOT. neutral ) THEN
	570	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
	571	ELSE
	572	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
	573	ENDIF
[1001]	574	u => u_1; u_p => u_2; tu_m => u_3
	575	v => v_1; v_p => v_2; tv_m => v_3
	576	w => w_1; w_p => w_2; tw_m => w_3
[1]	577
[1960]	578	IF ( humidity ) THEN
[1001]	579	q => q_1; q_p => q_2; tq_m => q_3
[3274]	580	vpt => vpt_1
[1001]	581	ENDIF
[4648]	582
[1960]	583	IF ( passive_scalar ) THEN
	584	s => s_1; s_p => s_2; ts_m => s_3
[4648]	585	ENDIF
[1]	586
	587	!
[2696]	588	!-- Initialize surface arrays
[2232]	589	CALL init_surface_arrays
	590	!
[3294]	591	!-- Allocate arrays for other modules
[3685]	592	CALL module_interface_init_arrays
[1551]	593
[1914]	594
[2320]	595	!
[4648]	596	!-- Allocate arrays containing the RK coefficient for calculation of perturbation pressure and
	597	!-- turbulent fluxes. At this point values are set for pressure calculation during initialization
	598	!-- (where no timestep is done). Further below the values needed within the timestep scheme will be
	599	!-- set.
	600	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
[1878]	601	weight_pres(1:intermediate_timestep_count_max) )
[1340]	602	weight_substep = 1.0_wp
	603	weight_pres = 1.0_wp
[1918]	604	intermediate_timestep_count = 0 ! needed when simulated_time = 0.0
[4648]	605
[3987]	606	IF ( debug_output ) CALL debug_message( 'allocating arrays', 'end' )
[1918]	607
[673]	608	!
[3014]	609	!-- Initialize time series
	610	ts_value = 0.0_wp
	611
	612	!
[1918]	613	!-- Initialize local summation arrays for routine flow_statistics.
[4648]	614	!-- This is necessary because they may not yet have been initialized when they are called from
	615	!-- flow_statistics (or - depending on the chosen model run - are never initialized)
	616	sums_divnew_l = 0.0_wp
	617	sums_divold_l = 0.0_wp
	618	sums_l_l = 0.0_wp
	619	sums_wsts_bc_l = 0.0_wp
	620
[1918]	621	!
[1]	622	!-- Initialize model variables
[4648]	623	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
[328]	624	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
[1]	625	!
[2696]	626	!-- Initialization with provided input data derived from larger-scale model
	627	IF ( INDEX( initializing_actions, 'inifor' ) /= 0 ) THEN
[3987]	628	IF ( debug_output ) CALL debug_message( 'initializing with INIFOR', 'start' )
[2696]	629	!
[4648]	630	!-- Read initial 1D profiles or 3D data from NetCDF file, depending on the provided
	631	!-- level-of-detail.
	632	!-- At the moment, only u, v, w, pt and q are provided.
[2696]	633	CALL netcdf_data_input_init_3d
	634	!
[4648]	635	!-- Please note, Inifor provides data from nzb+1 to nzt.
	636	!-- Bottom and top boundary conditions for Inifor profiles are already set (just after
	637	!-- reading), so that this is not necessary here.
	638	!-- Depending on the provided level-of-detail, initial Inifor data is either stored on data
	639	!-- type (lod=1), or directly on 3D arrays (lod=2).
	640	!-- In order to obtain also initial profiles in case of lod=2 (which is required for e.g.
	641	!-- damping), average over 3D data.
[3182]	642	IF( init_3d%lod_u == 1 ) THEN
	643	u_init = init_3d%u_init
[4648]	644	ELSEIF( init_3d%lod_u == 2 ) THEN
	645	ALLOCATE( init_l(nzb:nzt+1) )
[3182]	646	DO k = nzb, nzt+1
	647	init_l(k) = SUM( u(k,nys:nyn,nxl:nxr) )
	648	ENDDO
	649	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
[1384]	650
[3182]	651	#if defined( __parallel )
[4648]	652	CALL MPI_ALLREDUCE( init_l, u_init, nzt+1-nzb+1, MPI_REAL, MPI_SUM, comm2d, ierr )
[3182]	653	#else
	654	u_init = init_l
	655	#endif
	656	DEALLOCATE( init_l )
[3051]	657
[2696]	658	ENDIF
[4648]	659
	660	IF( init_3d%lod_v == 1 ) THEN
[3182]	661	v_init = init_3d%v_init
[4648]	662	ELSEIF( init_3d%lod_v == 2 ) THEN
	663	ALLOCATE( init_l(nzb:nzt+1) )
[3182]	664	DO k = nzb, nzt+1
	665	init_l(k) = SUM( v(k,nys:nyn,nxl:nxr) )
	666	ENDDO
	667	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
[2696]	668
[3182]	669	#if defined( __parallel )
[4648]	670	CALL MPI_ALLREDUCE( init_l, v_init, nzt+1-nzb+1, MPI_REAL, MPI_SUM, comm2d, ierr )
[3182]	671	#else
	672	v_init = init_l
	673	#endif
	674	DEALLOCATE( init_l )
	675	ENDIF
	676	IF( .NOT. neutral ) THEN
	677	IF( init_3d%lod_pt == 1 ) THEN
	678	pt_init = init_3d%pt_init
[4648]	679	ELSEIF( init_3d%lod_pt == 2 ) THEN
	680	ALLOCATE( init_l(nzb:nzt+1) )
[3182]	681	DO k = nzb, nzt+1
	682	init_l(k) = SUM( pt(k,nys:nyn,nxl:nxr) )
	683	ENDDO
	684	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
	685
	686	#if defined( __parallel )
[4648]	687	CALL MPI_ALLREDUCE( init_l, pt_init, nzt+1-nzb+1, MPI_REAL, MPI_SUM, comm2d, ierr )
[3182]	688	#else
	689	pt_init = init_l
	690	#endif
	691	DEALLOCATE( init_l )
	692	ENDIF
	693	ENDIF
	694
	695
	696	IF( humidity ) THEN
	697	IF( init_3d%lod_q == 1 ) THEN
	698	q_init = init_3d%q_init
[4648]	699	ELSEIF( init_3d%lod_q == 2 ) THEN
	700	ALLOCATE( init_l(nzb:nzt+1) )
[3182]	701	DO k = nzb, nzt+1
	702	init_l(k) = SUM( q(k,nys:nyn,nxl:nxr) )
	703	ENDDO
	704	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
	705
	706	#if defined( __parallel )
[4648]	707	CALL MPI_ALLREDUCE( init_l, q_init, nzt+1-nzb+1, MPI_REAL, MPI_SUM, comm2d, ierr )
[3182]	708	#else
	709	q_init = init_l
	710	#endif
	711	DEALLOCATE( init_l )
	712	ENDIF
	713	ENDIF
	714
[2696]	715	!
[4648]	716	!-- Write initial profiles onto 3D arrays.
	717	!-- Work-around, 3D initialization of u,v,w creates artificial structures which correlate with
	718	!-- the processor grid. The reason for this is still unknown. To work-around this, 3D
	719	!-- initialization will be effectively reduce to a 1D initialization where no such artificial
	720	!-- structures appear.
[2696]	721	DO i = nxlg, nxrg
	722	DO j = nysg, nyng
[4648]	723	IF( init_3d%lod_u == 1 .OR. init_3d%lod_u == 2 ) u(:,j,i) = u_init(:)
	724	IF( init_3d%lod_v == 1 .OR. init_3d%lod_u == 2 ) v(:,j,i) = v_init(:)
	725	IF( .NOT. neutral .AND. ( init_3d%lod_pt == 1 .OR. init_3d%lod_pt == 2 ) ) &
[3051]	726	pt(:,j,i) = pt_init(:)
[4648]	727	IF( humidity .AND. ( init_3d%lod_q == 1 .OR. init_3d%lod_q == 2 ) ) &
[4130]	728	q(:,j,i) = q_init(:)
[2696]	729	ENDDO
	730	ENDDO
	731	!
[4648]	732	!-- Set geostrophic wind components.
[2938]	733	IF ( init_3d%from_file_ug ) THEN
	734	ug(:) = init_3d%ug_init(:)
	735	ENDIF
	736	IF ( init_3d%from_file_vg ) THEN
	737	vg(:) = init_3d%vg_init(:)
	738	ENDIF
[3404]	739	!
	740	!-- Set bottom and top boundary condition for geostrophic wind
[2938]	741	ug(nzt+1) = ug(nzt)
	742	vg(nzt+1) = vg(nzt)
[3404]	743	ug(nzb) = ug(nzb+1)
	744	vg(nzb) = vg(nzb+1)
[2696]	745	!
	746	!-- Set inital w to 0
	747	w = 0.0_wp
	748
	749	IF ( passive_scalar ) THEN
	750	DO i = nxlg, nxrg
	751	DO j = nysg, nyng
	752	s(:,j,i) = s_init
	753	ENDDO
	754	ENDDO
	755	ENDIF
	756
	757	!
[4648]	758	!-- Set velocity components at non-atmospheric / oceanic grid points to zero.
[4346]	759	u = MERGE( u, 0.0_wp, BTEST( wall_flags_total_0, 1 ) )
	760	v = MERGE( v, 0.0_wp, BTEST( wall_flags_total_0, 2 ) )
	761	w = MERGE( w, 0.0_wp, BTEST( wall_flags_total_0, 3 ) )
[2700]	762	!
[4648]	763	!-- Initialize surface variables, e.g. friction velocity, momentum fluxes, etc.
	764	CALL init_surfaces
[2696]	765
[4648]	766	IF ( debug_output ) CALL debug_message( 'initializing with INIFOR', 'end' )
[2696]	767	!
	768	!-- Initialization via computed 1D-model profiles
	769	ELSEIF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
	770
[4648]	771	IF ( debug_output ) CALL debug_message( 'initializing with 1D model profiles', 'start' )
[1]	772	!
	773	!-- Use solutions of the 1D model as initial profiles,
	774	!-- start 1D model
	775	CALL init_1d_model
	776	!
	777	!-- Transfer initial profiles to the arrays of the 3D model
[667]	778	DO i = nxlg, nxrg
	779	DO j = nysg, nyng
[1]	780	pt(:,j,i) = pt_init
	781	u(:,j,i) = u1d
	782	v(:,j,i) = v1d
	783	ENDDO
	784	ENDDO
	785
[1960]	786	IF ( humidity ) THEN
[667]	787	DO i = nxlg, nxrg
	788	DO j = nysg, nyng
[1]	789	q(:,j,i) = q_init
	790	ENDDO
	791	ENDDO
	792	ENDIF
[2292]	793
[1960]	794	IF ( passive_scalar ) THEN
	795	DO i = nxlg, nxrg
	796	DO j = nysg, nyng
	797	s(:,j,i) = s_init
	798	ENDDO
[4648]	799	ENDDO
[1960]	800	ENDIF
[1]	801	!
	802	!-- Store initial profiles for output purposes etc.
[2696]	803	IF ( .NOT. constant_diffusion ) THEN
[1]	804	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
	805	ENDIF
	806	!
[2696]	807	!-- Set velocities back to zero
[4346]	808	u = MERGE( u, 0.0_wp, BTEST( wall_flags_total_0, 1 ) )
[4648]	809	v = MERGE( v, 0.0_wp, BTEST( wall_flags_total_0, 2 ) )
[1]	810	!
[4648]	811	!-- WARNING: The extra boundary conditions set after running the 1D model impose an error on
	812	!-- -------- the divergence one layer below the topography; need to correct later
	813	!-- ATTENTION: Provisional correction for Piacsek & Williams advection scheme: keep u and v
	814	!-- ---------- zero one layer below the topography.
[2696]	815	IF ( ibc_uv_b == 1 ) THEN
[667]	816	!
[2696]	817	!-- Neumann condition
	818	DO i = nxl-1, nxr+1
	819	DO j = nys-1, nyn+1
	820	u(nzb,j,i) = u(nzb+1,j,i)
	821	v(nzb,j,i) = v(nzb+1,j,i)
[1]	822	ENDDO
[2696]	823	ENDDO
[1]	824
	825	ENDIF
[2618]	826	!
[4648]	827	!-- Initialize surface variables, e.g. friction velocity, momentum fluxes, etc.
[2618]	828	CALL init_surfaces
[1]	829
[4648]	830	IF ( debug_output ) CALL debug_message( 'initializing with 1D model profiles', 'end' )
[1384]	831
[4648]	832	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) THEN
[1241]	833
[4648]	834	IF ( debug_output ) CALL debug_message( 'initializing with constant profiles', 'start' )
[2259]	835
	836	!
[4648]	837	!-- Use constructed initial profiles (velocity constant with height, temperature profile with
	838	!-- constant gradient)
[667]	839	DO i = nxlg, nxrg
	840	DO j = nysg, nyng
[1]	841	pt(:,j,i) = pt_init
	842	u(:,j,i) = u_init
	843	v(:,j,i) = v_init
	844	ENDDO
	845	ENDDO
	846	!
[2758]	847	!-- Mask topography
[4346]	848	u = MERGE( u, 0.0_wp, BTEST( wall_flags_total_0, 1 ) )
	849	v = MERGE( v, 0.0_wp, BTEST( wall_flags_total_0, 2 ) )
[2758]	850	!
[4648]	851	!-- Set initial horizontal velocities at the lowest computational grid levels to zero in order
	852	!-- to avoid too small time steps caused by the diffusion limit in the initial phase of a run
	853	!-- (at k=1, dz/2 occurs in the limiting formula!).
	854	!-- Please note, in case land- or urban-surface model is used and a spinup is applied, masking
	855	!-- the lowest computational level is not possible as MOST as well as energy-balance
	856	!-- parametrizations will not work with zero wind velocity.
	857	IF ( ibc_uv_b /= 1 .AND. .NOT. spinup ) THEN
[1815]	858	DO i = nxlg, nxrg
	859	DO j = nysg, nyng
[2232]	860	DO k = nzb, nzt
[4648]	861	u(k,j,i) = MERGE( u(k,j,i), 0.0_wp, BTEST( wall_flags_total_0(k,j,i), 20 ) )
	862	v(k,j,i) = MERGE( v(k,j,i), 0.0_wp, BTEST( wall_flags_total_0(k,j,i), 21 ) )
[2232]	863	ENDDO
[1815]	864	ENDDO
	865	ENDDO
	866	ENDIF
[1]	867
[1960]	868	IF ( humidity ) THEN
[667]	869	DO i = nxlg, nxrg
	870	DO j = nysg, nyng
[1]	871	q(:,j,i) = q_init
	872	ENDDO
	873	ENDDO
	874	ENDIF
[4648]	875
[1960]	876	IF ( passive_scalar ) THEN
	877	DO i = nxlg, nxrg
	878	DO j = nysg, nyng
	879	s(:,j,i) = s_init
	880	ENDDO
	881	ENDDO
	882	ENDIF
[1]	883
[1920]	884	!
[4648]	885	!-- Compute initial temperature field and other constants used in case of a sloping surface.
[1]	886	IF ( sloping_surface ) CALL init_slope
[2618]	887	!
[4648]	888	!-- Initialize surface variables, e.g. friction velocity, momentum fluxes, etc.
[2618]	889	CALL init_surfaces
[4648]	890
[3987]	891	IF ( debug_output ) CALL debug_message( 'initializing with constant profiles', 'end' )
[1384]	892
[4648]	893	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) THEN
[1384]	894
[3987]	895	IF ( debug_output ) CALL debug_message( 'initializing by user', 'start' )
[46]	896	!
[4648]	897	!-- Pre-initialize surface variables, i.e. setting start- and end-indices at each
	898	!-- (j,i)-location. Please note, this does not supersede user-defined initialization of
	899	!-- surface quantities.
[2618]	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
[4648]	909	IF ( debug_output ) THEN
	910	CALL debug_message( 'initializing statistics, boundary conditions, etc.', 'start' )
	911	ENDIF
[1384]	912
[667]	913	!
	914	!-- Bottom boundary
[4648]	915	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
[1340]	916	u(nzb,:,:) = 0.0_wp
	917	v(nzb,:,:) = 0.0_wp
[667]	918	ENDIF
[1]	919
	920	!
[151]	921	!-- Apply channel flow boundary condition
[132]	922	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
[1340]	923	u(nzt+1,:,:) = 0.0_wp
	924	v(nzt+1,:,:) = 0.0_wp
[132]	925	ENDIF
	926
	927	!
[1]	928	!-- Calculate virtual potential temperature
[1960]	929	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
[1]	930
	931	!
[4648]	932	!-- Store initial profiles for output purposes etc.. Please note, in case of initialization of u,
	933	!-- v, w, pt, and q via output data derived from larger scale models, data will not be
	934	!-- horizontally homogeneous. Actually, a mean profile should be calculated before.
[1]	935	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
	936	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
[667]	937	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
[1340]	938	hom(nzb,1,5,:) = 0.0_wp
	939	hom(nzb,1,6,:) = 0.0_wp
[1]	940	ENDIF
	941	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
	942
[75]	943	IF ( humidity ) THEN
[1]	944	!
[4648]	945	!-- Store initial profile of total water content, virtual potential temperature
[1]	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	!
[4648]	949	!-- Store initial profile of mixing ratio and potential temperature
[3274]	950	IF ( bulk_cloud_model .OR. cloud_droplets ) THEN
[1]	951	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
	952	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
	953	ENDIF
	954	ENDIF
	955
[2696]	956	!
	957	!-- Store initial scalar profile
[1]	958	IF ( passive_scalar ) THEN
[2513]	959	hom(:,1,121,:) = SPREAD( s(:,nys,nxl), 2, statistic_regions+1 )
[1]	960	ENDIF
	961
	962	!
[1400]	963	!-- Initialize the random number generators (from numerical recipes)
	964	CALL random_function_ini
[4648]	965
[1400]	966	IF ( random_generator == 'random-parallel' ) THEN
[3241]	967	CALL init_parallel_random_generator( nx, nys, nyn, nxl, nxr )
[1400]	968	ENDIF
	969	!
[4648]	970	!-- Set the reference state to be used in the buoyancy terms (for ocean runs the reference state
	971	!-- will be set (overwritten) in init_ocean).
[1179]	972	IF ( use_single_reference_value ) THEN
[4648]	973	IF ( .NOT. humidity ) THEN
[1179]	974	ref_state(:) = pt_reference
	975	ELSE
	976	ref_state(:) = vpt_reference
	977	ENDIF
	978	ELSE
[4648]	979	IF ( .NOT. humidity ) THEN
[1179]	980	ref_state(:) = pt_init(:)
	981	ELSE
	982	ref_state(:) = vpt(:,nys,nxl)
	983	ENDIF
	984	ENDIF
[152]	985
	986	!
[707]	987	!-- For the moment, vertical velocity is zero
[1340]	988	w = 0.0_wp
[1]	989
	990	!
	991	!-- Initialize array sums (must be defined in first call of pres)
[1340]	992	sums = 0.0_wp
[1]	993
	994	!
[707]	995	!-- In case of iterative solvers, p must get an initial value
[1575]	996	IF ( psolver(1:9) == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
[707]	997	!
[1]	998	!-- Impose vortex with vertical axis on the initial velocity profile
	999	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
	1000	CALL init_rankine
	1001	ENDIF
	1002
	1003	!
[4648]	1004	!-- Impose temperature anomaly (advection test only) or warm air bubble close to surface.
	1005	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 .OR. &
[3035]	1006	INDEX( initializing_actions, 'initialize_bubble' ) /= 0 ) THEN
[1]	1007	CALL init_pt_anomaly
	1008	ENDIF
[4648]	1009
[1]	1010	!
	1011	!-- If required, change the surface temperature at the start of the 3D run
[1340]	1012	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
[1]	1013	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
	1014	ENDIF
	1015
	1016	!
	1017	!-- If required, change the surface humidity/scalar at the start of the 3D
	1018	!-- run
[4648]	1019	IF ( humidity .AND. q_surface_initial_change /= 0.0_wp ) &
[1]	1020	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
[4648]	1021
	1022	IF ( passive_scalar .AND. s_surface_initial_change /= 0.0_wp ) &
[1960]	1023	s(nzb,:,:) = s(nzb,:,:) + s_surface_initial_change
[1]	1024
[4648]	1025
[1]	1026	!
	1027	!-- Initialize old and new time levels.
[2696]	1028	tpt_m = 0.0_wp; tu_m = 0.0_wp; tv_m = 0.0_wp; tw_m = 0.0_wp
	1029	pt_p = pt; u_p = u; v_p = v; w_p = w
[1]	1030
[1960]	1031	IF ( humidity ) THEN
[1340]	1032	tq_m = 0.0_wp
[1]	1033	q_p = q
	1034	ENDIF
[4648]	1035
[1960]	1036	IF ( passive_scalar ) THEN
	1037	ts_m = 0.0_wp
	1038	s_p = s
[4648]	1039	ENDIF
[1]	1040
[4648]	1041	IF ( debug_output ) THEN
	1042	CALL debug_message( 'initializing statistics, boundary conditions, etc.', 'end' )
	1043	ENDIF
[94]	1044
[1788]	1045	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
[2232]	1046	TRIM( initializing_actions ) == 'cyclic_fill' ) &
[1]	1047	THEN
[1384]	1048
[4648]	1049	IF ( debug_output ) THEN
	1050	CALL debug_message( 'initializing in case of restart / cyclic_fill', 'start' )
	1051	ENDIF
[1]	1052	!
[4648]	1053	!-- Initialize surface elements and its attributes, e.g. heat- and momentumfluxes, roughness,
	1054	!-- scaling parameters. As number of surface elements might be different between runs, e.g. in
	1055	!-- case of cyclic fill, and not all surface elements are read, surface elements need to be
	1056	!-- initialized before.
	1057	!-- Please note, in case of cyclic fill, surfaces should be initialized after restart data is
	1058	!-- read, else, individual settings of surface parameters will be overwritten from data of
	1059	!-- precursor run, hence, init_surfaces is called a second time after reading the restart data.
	1060	CALL init_surfaces
[3609]	1061	!
[4648]	1062	!-- When reading data for cyclic fill of 3D prerun data files, read some of the global variables
	1063	!-- from the restart file which are required for initializing the inflow
[328]	1064	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
[559]	1065
[4783]	1066	!
	1067	!-- Blockwise I/O does not work together with MPI-I/O
	1068	IF ( restart_data_format_input(1:3) == 'mpi' ) THEN
	1069	CALL rrd_read_parts_of_global
	1070	ELSE
	1071	DO i = 0, io_blocks-1
	1072	IF ( i == io_group ) THEN
	1073	CALL rrd_read_parts_of_global
	1074	ENDIF
	1075	#if defined( __parallel )
	1076	CALL MPI_BARRIER( comm2d, ierr )
	1077	#endif
	1078	ENDDO
	1079	ENDIF
	1080
	1081	ENDIF
	1082
	1083	!
	1084	!-- Read processor specific binary data from restart file.
	1085	!-- Blockwise I/O does not work together with MPI-I/O
	1086	IF ( restart_data_format_input(1:3) == 'mpi' ) THEN
	1087	CALL rrd_local
	1088	ELSE
[759]	1089	DO i = 0, io_blocks-1
	1090	IF ( i == io_group ) THEN
[4783]	1091	CALL rrd_local
[759]	1092	ENDIF
	1093	#if defined( __parallel )
	1094	CALL MPI_BARRIER( comm2d, ierr )
	1095	#endif
	1096	ENDDO
[767]	1097	ENDIF
	1098
[4648]	1099
[4365]	1100	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
	1101
[3608]	1102	!
[4648]	1103	!-- In case of cyclic fill, call init_surfaces a second time, so that surface properties such
	1104	!-- as heat fluxes are initialized as prescribed.
[3609]	1105	CALL init_surfaces
[767]	1106
[328]	1107	!
[4648]	1108	!-- Overwrite u_init, v_init, pt_init, q_init and s_init with the horizontally mean (hom)
	1109	!-- vertical profiles from the end of the prerun, because these profiles shall be used as the
	1110	!-- reference state for the rayleigh damping and the pt_damping. This is especially important
	1111	!-- for the use of large_scale_subsidence, because the reference temperature in the free
	1112	!-- atmosphere changes in time.
[4365]	1113	u_init(:) = hom_sum(:,1,0)
	1114	v_init(:) = hom_sum(:,2,0)
	1115	pt_init(:) = hom_sum(:,4,0)
[4648]	1116	IF ( humidity ) q_init(:) = hom_sum(:,41,0)
	1117	IF ( passive_scalar ) s_init(:) = hom_sum(:,115,0)
[4365]	1118	ENDIF
	1119	!
[4648]	1120	!-- In case of complex terrain and cyclic fill method as initialization, shift initial data in
	1121	!-- the vertical direction for each point in the x-y-plane depending on local surface height.
	1122	IF ( complex_terrain .AND. TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
[2550]	1123	DO i = nxlg, nxrg
	1124	DO j = nysg, nyng
[4168]	1125	nz_u_shift = topo_top_ind(j,i,1)
	1126	nz_v_shift = topo_top_ind(j,i,2)
	1127	nz_w_shift = topo_top_ind(j,i,3)
	1128	nz_s_shift = topo_top_ind(j,i,0)
[2550]	1129
[4648]	1130	u(nz_u_shift:nzt+1,j,i) = u(0:nzt+1-nz_u_shift,j,i)
[2550]	1131
	1132	v(nz_v_shift:nzt+1,j,i) = v(0:nzt+1-nz_v_shift,j,i)
	1133
	1134	w(nz_w_shift:nzt+1,j,i) = w(0:nzt+1-nz_w_shift,j,i)
	1135
	1136	p(nz_s_shift:nzt+1,j,i) = p(0:nzt+1-nz_s_shift,j,i)
	1137	pt(nz_s_shift:nzt+1,j,i) = pt(0:nzt+1-nz_s_shift,j,i)
	1138	ENDDO
	1139	ENDDO
	1140	ENDIF
	1141	!
[767]	1142	!-- Initialization of the turbulence recycling method
[4648]	1143	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. turbulent_inflow ) THEN
[767]	1144	!
	1145	!-- First store the profiles to be used at the inflow.
[4648]	1146	!-- These profiles are the (temporally) and horizontally averaged vertical profiles from the
	1147	!-- prerun. Alternatively, prescribed profiles for u,v-components can be used.
[3288]	1148	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,1:num_mean_inflow_profiles) )
[151]	1149
[767]	1150	IF ( use_prescribed_profile_data ) THEN
	1151	mean_inflow_profiles(:,1) = u_init ! u
	1152	mean_inflow_profiles(:,2) = v_init ! v
	1153	ELSE
[328]	1154	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
	1155	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
[767]	1156	ENDIF
	1157	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
[4648]	1158	IF ( humidity ) mean_inflow_profiles(:,6) = hom_sum(:,41,0) ! q
	1159	IF ( passive_scalar ) mean_inflow_profiles(:,7) = hom_sum(:,115,0) ! s
[4365]	1160
[2550]	1161	!
[4648]	1162	!-- In case of complex terrain, determine vertical displacement at inflow boundary and adjust
	1163	!-- mean inflow profiles
[2550]	1164	IF ( complex_terrain ) THEN
[4648]	1165	IF ( nxlg <= 0 .AND. nxrg >= 0 .AND. nysg <= 0 .AND. nyng >= 0 ) THEN
[4168]	1166	nz_u_shift_l = topo_top_ind(j,i,1)
	1167	nz_v_shift_l = topo_top_ind(j,i,2)
	1168	nz_w_shift_l = topo_top_ind(j,i,3)
	1169	nz_s_shift_l = topo_top_ind(j,i,0)
[2550]	1170	ELSE
	1171	nz_u_shift_l = 0
	1172	nz_v_shift_l = 0
	1173	nz_w_shift_l = 0
	1174	nz_s_shift_l = 0
	1175	ENDIF
[151]	1176
[2550]	1177	#if defined( __parallel )
[4648]	1178	CALL MPI_ALLREDUCE( nz_u_shift_l, nz_u_shift, 1, MPI_INTEGER, MPI_MAX, comm2d, ierr )
	1179	CALL MPI_ALLREDUCE( nz_v_shift_l, nz_v_shift, 1, MPI_INTEGER, MPI_MAX, comm2d, ierr )
	1180	CALL MPI_ALLREDUCE( nz_w_shift_l, nz_w_shift, 1, MPI_INTEGER, MPI_MAX, comm2d, ierr )
	1181	CALL MPI_ALLREDUCE( nz_s_shift_l, nz_s_shift, 1, MPI_INTEGER, MPI_MAX, comm2d, ierr )
[2550]	1182	#else
	1183	nz_u_shift = nz_u_shift_l
	1184	nz_v_shift = nz_v_shift_l
	1185	nz_w_shift = nz_w_shift_l
	1186	nz_s_shift = nz_s_shift_l
	1187	#endif
	1188
	1189	mean_inflow_profiles(:,1) = 0.0_wp
	1190	mean_inflow_profiles(nz_u_shift:nzt+1,1) = hom_sum(0:nzt+1-nz_u_shift,1,0) ! u
	1191
	1192	mean_inflow_profiles(:,2) = 0.0_wp
	1193	mean_inflow_profiles(nz_v_shift:nzt+1,2) = hom_sum(0:nzt+1-nz_v_shift,2,0) ! v
	1194
	1195	mean_inflow_profiles(nz_s_shift:nzt+1,4) = hom_sum(0:nzt+1-nz_s_shift,4,0) ! pt
	1196
	1197	ENDIF
	1198
[151]	1199	!
[4648]	1200	!-- If necessary, adjust the horizontal flow field to the prescribed profiles
[767]	1201	IF ( use_prescribed_profile_data ) THEN
	1202	DO i = nxlg, nxrg
[667]	1203	DO j = nysg, nyng
[328]	1204	DO k = nzb, nzt+1
[767]	1205	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
	1206	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
[328]	1207	ENDDO
[151]	1208	ENDDO
[767]	1209	ENDDO
	1210	ENDIF
[151]	1211
	1212	!
[4648]	1213	!-- Use these mean profiles at the inflow (provided that Dirichlet conditions are used)
[3182]	1214	IF ( bc_dirichlet_l ) THEN
[767]	1215	DO j = nysg, nyng
	1216	DO k = nzb, nzt+1
	1217	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
	1218	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
[1340]	1219	w(k,j,nxlg:-1) = 0.0_wp
[767]	1220	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
[4648]	1221	IF ( humidity ) q(k,j,nxlg:-1) = mean_inflow_profiles(k,6)
	1222	IF ( passive_scalar ) s(k,j,nxlg:-1) = mean_inflow_profiles(k,7)
[767]	1223	ENDDO
	1224	ENDDO
	1225	ENDIF
	1226
[151]	1227	!
[4648]	1228	!-- Calculate the damping factors to be used at the inflow. For a turbulent inflow the
	1229	!-- turbulent fluctuations have to be limited vertically because otherwise the turbulent
	1230	!-- inflow layer will grow in time.
[1340]	1231	IF ( inflow_damping_height == 9999999.9_wp ) THEN
[767]	1232	!
[4648]	1233	!-- Default: use the inversion height calculated by the prerun; if this is zero,
	1234	!-- inflow_damping_height must be explicitly specified.
[1340]	1235	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
[767]	1236	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
	1237	ELSE
[4648]	1238	WRITE( message_string, * ) 'inflow_damping_height must be ', &
	1239	'explicitly specified because&the inversion height ', &
	1240	'calculated by the prerun is zero.'
[767]	1241	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
[292]	1242	ENDIF
[151]	1243
[767]	1244	ENDIF
	1245
[1340]	1246	IF ( inflow_damping_width == 9999999.9_wp ) THEN
[151]	1247	!
[4648]	1248	!-- Default for the transition range: one tenth of the undamped layer
[1340]	1249	inflow_damping_width = 0.1_wp * inflow_damping_height
[151]	1250
[767]	1251	ENDIF
[151]	1252
[767]	1253	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
[151]	1254
[767]	1255	DO k = nzb, nzt+1
[151]	1256
[767]	1257	IF ( zu(k) <= inflow_damping_height ) THEN
[1340]	1258	inflow_damping_factor(k) = 1.0_wp
[996]	1259	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
[4648]	1260	inflow_damping_factor(k) = 1.0_wp - &
	1261	( zu(k) - inflow_damping_height ) / inflow_damping_width
[767]	1262	ELSE
[1340]	1263	inflow_damping_factor(k) = 0.0_wp
[767]	1264	ENDIF
[151]	1265
[767]	1266	ENDDO
[151]	1267
[147]	1268	ENDIF
	1269
[152]	1270	!
[2696]	1271	!-- Inside buildings set velocities back to zero
[4648]	1272	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. topography /= 'flat' ) THEN
[359]	1273	!
[2696]	1274	!-- Inside buildings set velocities back to zero.
	1275	!-- Other scalars (pt, q, s, p, sa, ...) are ignored at present,
[359]	1276	!-- maybe revise later.
[1001]	1277	DO i = nxlg, nxrg
	1278	DO j = nysg, nyng
[2232]	1279	DO k = nzb, nzt
[4648]	1280	u(k,j,i) = MERGE( u(k,j,i), 0.0_wp, BTEST( wall_flags_total_0(k,j,i), 1 ) )
	1281	v(k,j,i) = MERGE( v(k,j,i), 0.0_wp, BTEST( wall_flags_total_0(k,j,i), 2 ) )
	1282	w(k,j,i) = MERGE( w(k,j,i), 0.0_wp, BTEST( wall_flags_total_0(k,j,i), 3 ) )
[2232]	1283	ENDDO
[359]	1284	ENDDO
[1001]	1285	ENDDO
[359]	1286
	1287	ENDIF
	1288
	1289	!
[4648]	1290	!-- Calculate initial temperature field and other constants used in case of a sloping surface
[1]	1291	IF ( sloping_surface ) CALL init_slope
	1292
	1293	!
[4648]	1294	!-- Initialize new time levels (only done in order to set boundary values including ghost points)
[2696]	1295	pt_p = pt; u_p = u; v_p = v; w_p = w
[1960]	1296	IF ( humidity ) THEN
[1053]	1297	q_p = q
	1298	ENDIF
[1960]	1299	IF ( passive_scalar ) s_p = s
[181]	1300	!
[4648]	1301	!-- Allthough tendency arrays are set in prognostic_equations, they have have to be predefined
	1302	!-- here because they are used (but multiplied with 0) there before they are set.
[2696]	1303	tpt_m = 0.0_wp; tu_m = 0.0_wp; tv_m = 0.0_wp; tw_m = 0.0_wp
[1960]	1304	IF ( humidity ) THEN
[1340]	1305	tq_m = 0.0_wp
[1053]	1306	ENDIF
[1960]	1307	IF ( passive_scalar ) ts_m = 0.0_wp
[181]	1308
[4648]	1309	IF ( debug_output ) THEN
	1310	CALL debug_message( 'initializing in case of restart / cyclic_fill', 'end' )
	1311	ENDIF
[1384]	1312
[1]	1313	ELSE
	1314	!
	1315	!-- Actually this part of the programm should not be reached
[254]	1316	message_string = 'unknown initializing problem'
	1317	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
[1]	1318	ENDIF
	1319
	1320	!
[667]	1321	!-- Calculate the initial volume flow at the right and north boundary
[709]	1322	IF ( conserve_volume_flow ) THEN
[151]	1323
[767]	1324	IF ( use_prescribed_profile_data ) THEN
[667]	1325
[1340]	1326	volume_flow_initial_l = 0.0_wp
	1327	volume_flow_area_l = 0.0_wp
[732]	1328
[667]	1329	IF ( nxr == nx ) THEN
	1330	DO j = nys, nyn
[2232]	1331	DO k = nzb+1, nzt
[4648]	1332	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	1333	u_init(k) * dzw(k) &
	1334	* MERGE( 1.0_wp, 0.0_wp, &
	1335	BTEST( wall_flags_total_0(k,j,nxr), 1 ) &
	1336	)
[2232]	1337
[4648]	1338	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
	1339	* MERGE( 1.0_wp, 0.0_wp, &
	1340	BTEST( wall_flags_total_0(k,j,nxr), 1 ) &
	1341	)
[767]	1342	ENDDO
	1343	ENDDO
	1344	ENDIF
[4648]	1345
[767]	1346	IF ( nyn == ny ) THEN
	1347	DO i = nxl, nxr
[2232]	1348	DO k = nzb+1, nzt
[4648]	1349	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	1350	v_init(k) * dzw(k) &
	1351	* MERGE( 1.0_wp, 0.0_wp, &
	1352	BTEST( wall_flags_total_0(k,nyn,i), 2 ) &
	1353	)
	1354	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
	1355	* MERGE( 1.0_wp, 0.0_wp, &
	1356	BTEST( wall_flags_total_0(k,nyn,i), 2 ) &
	1357	)
[767]	1358	ENDDO
	1359	ENDDO
	1360	ENDIF
	1361
	1362	#if defined( __parallel )
[4648]	1363	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1), 2, MPI_REAL, &
	1364	MPI_SUM, comm2d, ierr )
	1365	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), 2, MPI_REAL, MPI_SUM, &
	1366	comm2d, ierr )
[767]	1367
	1368	#else
	1369	volume_flow_initial = volume_flow_initial_l
	1370	volume_flow_area = volume_flow_area_l
[4648]	1371	#endif
[767]	1372
	1373	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
	1374
[1340]	1375	volume_flow_initial_l = 0.0_wp
	1376	volume_flow_area_l = 0.0_wp
[767]	1377
	1378	IF ( nxr == nx ) THEN
	1379	DO j = nys, nyn
[2232]	1380	DO k = nzb+1, nzt
[4648]	1381	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	1382	hom_sum(k,1,0) * dzw(k) &
	1383	* MERGE( 1.0_wp, 0.0_wp, &
	1384	BTEST( wall_flags_total_0(k,j,nx), 1 ) &
	1385	)
	1386	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
	1387	* MERGE( 1.0_wp, 0.0_wp, &
	1388	BTEST( wall_flags_total_0(k,j,nx), 1 ) &
	1389	)
[667]	1390	ENDDO
	1391	ENDDO
	1392	ENDIF
[4648]	1393
[667]	1394	IF ( nyn == ny ) THEN
	1395	DO i = nxl, nxr
[2232]	1396	DO k = nzb+1, nzt
[4648]	1397	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	1398	hom_sum(k,2,0) * dzw(k) &
	1399	* MERGE( 1.0_wp, 0.0_wp, &
	1400	BTEST( wall_flags_total_0(k,ny,i), 2 ) &
	1401	)
	1402	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
	1403	* MERGE( 1.0_wp, 0.0_wp, &
	1404	BTEST( wall_flags_total_0(k,ny,i), 2 ) &
	1405	)
[667]	1406	ENDDO
	1407	ENDDO
	1408	ENDIF
	1409
[732]	1410	#if defined( __parallel )
[4648]	1411	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1), 2, MPI_REAL, &
	1412	MPI_SUM, comm2d, ierr )
	1413	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), 2, MPI_REAL, MPI_SUM, &
	1414	comm2d, ierr )
[732]	1415
	1416	#else
	1417	volume_flow_initial = volume_flow_initial_l
	1418	volume_flow_area = volume_flow_area_l
[4648]	1419	#endif
[732]	1420
[667]	1421	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
	1422
[1340]	1423	volume_flow_initial_l = 0.0_wp
	1424	volume_flow_area_l = 0.0_wp
[732]	1425
[667]	1426	IF ( nxr == nx ) THEN
	1427	DO j = nys, nyn
[2232]	1428	DO k = nzb+1, nzt
[4648]	1429	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	1430	u(k,j,nx) * dzw(k) &
	1431	* MERGE( 1.0_wp, 0.0_wp, &
	1432	BTEST( wall_flags_total_0(k,j,nx), 1 ) &
	1433	)
	1434	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
	1435	* MERGE( 1.0_wp, 0.0_wp, &
	1436	BTEST( wall_flags_total_0(k,j,nx), 1 ) &
	1437	)
[667]	1438	ENDDO
	1439	ENDDO
	1440	ENDIF
[4648]	1441
[667]	1442	IF ( nyn == ny ) THEN
	1443	DO i = nxl, nxr
[2232]	1444	DO k = nzb+1, nzt
[4648]	1445	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	1446	v(k,ny,i) * dzw(k) &
	1447	* MERGE( 1.0_wp, 0.0_wp, &
	1448	BTEST( wall_flags_total_0(k,ny,i), 2 ) &
	1449	)
	1450	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
	1451	* MERGE( 1.0_wp, 0.0_wp, &
	1452	BTEST( wall_flags_total_0(k,ny,i), 2 ) &
	1453	)
[667]	1454	ENDDO
	1455	ENDDO
	1456	ENDIF
	1457
	1458	#if defined( __parallel )
[4648]	1459	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1), 2, MPI_REAL, &
	1460	MPI_SUM, comm2d, ierr )
	1461	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), 2, MPI_REAL, MPI_SUM, &
	1462	comm2d, ierr )
[667]	1463
	1464	#else
[732]	1465	volume_flow_initial = volume_flow_initial_l
	1466	volume_flow_area = volume_flow_area_l
[4648]	1467	#endif
[667]	1468
[732]	1469	ENDIF
	1470
[151]	1471	!
[4648]	1472	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated from u\|v_bulk instead
[680]	1473	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
	1474	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
	1475	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
	1476	ENDIF
[667]	1477
[680]	1478	ENDIF
[2232]	1479	!
[4648]	1480	!-- In the following, surface properties can be further initialized with input from static driver
	1481	!-- file.
	1482	!-- At the moment this affects only default surfaces. For example, roughness length or sensible /
	1483	!-- latent heat fluxes can be initialized heterogeneously for default surfaces. Therefore, a generic
	1484	!-- routine from netcdf_data_input_mod is called to read a 2D array.
[4150]	1485	IF ( input_pids_static ) THEN
	1486	!
[4151]	1487	!-- Allocate memory for possible static input
	1488	ALLOCATE( tmp_2d%var(nys:nyn,nxl:nxr) )
	1489	tmp_2d%var = 0.0_wp
	1490	!
[4150]	1491	!-- Open the static input file
[4151]	1492	#if defined( __netcdf )
[4648]	1493	CALL open_read_file( TRIM( input_file_static ) // &
	1494	TRIM( coupling_char ), pids_id )
	1495
[4186]	1496	CALL inquire_num_variables( pids_id, num_var_pids )
[4150]	1497	!
	1498	!-- Allocate memory to store variable names and read them
[4186]	1499	ALLOCATE( vars_pids(1:num_var_pids) )
	1500	CALL inquire_variable_names( pids_id, vars_pids )
[4150]	1501	!
[4648]	1502	!-- Input roughness length.
[4186]	1503	IF ( check_existence( vars_pids, 'z0' ) ) THEN
[4150]	1504	!
	1505	!-- Read _FillValue attribute
[4648]	1506	CALL get_attribute( pids_id, char_fill, tmp_2d%fill, .FALSE., 'z0' )
	1507	!
	1508	!-- Read variable
	1509	CALL get_variable( pids_id, 'z0', tmp_2d%var, nxl, nxr, nys, nyn )
	1510	!
	1511	!-- Initialize roughness length. Note, z0 will be only initialized at default-type surfaces.
	1512	!-- At natural or urban z0 is implicitly initialized by the respective parameter lists.
	1513	!-- Initialize horizontal surface elements.
	1514	CALL init_single_surface_properties( surf_def_h(0)%z0, tmp_2d%var, surf_def_h(0)%ns, &
	1515	tmp_2d%fill, surf_def_h(0)%i, surf_def_h(0)%j )
	1516	!
	1517	!-- Initialize roughness also at vertical surface elements.
	1518	!-- Note, the actual 2D input arrays are only defined on the subdomain. Therefore, pass the
	1519	!-- index arrays with their respective offset values.
	1520	DO l = 0, 3
	1521	CALL init_single_surface_properties( surf_def_v(l)%z0, tmp_2d%var, surf_def_v(l)%ns, &
	1522	tmp_2d%fill, surf_def_v(l)%i+surf_def_v(l)%ioff, &
	1523	surf_def_v(l)%j+surf_def_v(l)%joff )
[4150]	1524	ENDDO
[4648]	1525
[4150]	1526	ENDIF
	1527	!
[4648]	1528	!-- Input surface sensible heat flux.
[4514]	1529	IF ( check_existence( vars_pids, 'shf' ) ) THEN
	1530	!
	1531	!-- Read _FillValue attribute
[4648]	1532	CALL get_attribute( pids_id, char_fill, tmp_2d%fill, .FALSE., 'shf' )
[4514]	1533	!
	1534	!-- Read variable
[4648]	1535	CALL get_variable( pids_id, 'shf', tmp_2d%var, nxl, nxr, nys, nyn )
[4514]	1536	!
[4648]	1537	!-- Initialize heat flux. Note, shf will be only initialized at default-type surfaces. At
	1538	!-- natural or urban shf is implicitly initialized by the respective parameter lists.
[4514]	1539	!-- Initialize horizontal surface elements.
[4648]	1540	CALL init_single_surface_properties( surf_def_h(0)%shf, tmp_2d%var, surf_def_h(0)%ns, &
	1541	tmp_2d%fill, surf_def_h(0)%i, surf_def_h(0)%j )
[4514]	1542	!
	1543	!-- Initialize heat flux also at vertical surface elements.
[4648]	1544	!-- Note, the actual 2D input arrays are only defined on the subdomain. Therefore, pass the
	1545	!-- index arrays with their respective offset values.
[4514]	1546	DO l = 0, 3
[4648]	1547	CALL init_single_surface_properties( surf_def_v(l)%shf, tmp_2d%var, surf_def_v(l)%ns, &
	1548	tmp_2d%fill, surf_def_v(l)%i+surf_def_v(l)%ioff, &
	1549	surf_def_v(l)%j+surf_def_v(l)%joff )
[4514]	1550	ENDDO
	1551
	1552	ENDIF
	1553	!
[4791]	1554	!-- Input surface latent heat flux.
	1555	IF ( humidity ) THEN
	1556	IF ( check_existence( vars_pids, 'qsws' ) ) THEN
[4514]	1557	!
[4791]	1558	!-- Read _FillValue attribute
	1559	CALL get_attribute( pids_id, char_fill, tmp_2d%fill, .FALSE., 'qsws' )
[4514]	1560	!
[4791]	1561	!-- Read variable
	1562	CALL get_variable( pids_id, 'qsws', tmp_2d%var, nxl, nxr, nys, nyn )
[4514]	1563	!
[4791]	1564	!-- Initialize latent heat flux. Note, qsws will be only initialized at default-type surfaces.
	1565	!-- At natural or urban qsws is implicitly initialized by the respective parameter lists.
	1566	!-- Initialize horizontal surface elements.
	1567	CALL init_single_surface_properties( surf_def_h(0)%qsws, tmp_2d%var, surf_def_h(0)%ns,&
	1568	tmp_2d%fill, surf_def_h(0)%i, surf_def_h(0)%j )
[4514]	1569	!
[4791]	1570	!-- Initialize latent heat flux also at vertical surface elements.
	1571	!-- Note, the actual 2D input arrays are only defined on the subdomain. Therefore, pass the
	1572	!-- index arrays with their respective offset values.
	1573	DO l = 0, 3
	1574	CALL init_single_surface_properties( surf_def_v(l)%qsws, tmp_2d%var, &
	1575	surf_def_v(l)%ns, tmp_2d%fill, &
	1576	surf_def_v(l)%i+surf_def_v(l)%ioff, &
	1577	surf_def_v(l)%j+surf_def_v(l)%joff )
	1578	ENDDO
[4514]	1579
[4791]	1580	ENDIF
[4514]	1581	ENDIF
	1582	!
[4791]	1583	!-- Input passive scalar flux.
	1584	IF ( passive_scalar ) THEN
	1585	IF ( check_existence( vars_pids, 'ssws' ) ) THEN
	1586	!
	1587	!-- Read _FillValue attribute
	1588	CALL get_attribute( pids_id, char_fill, tmp_2d%fill, .FALSE., 'ssws' )
	1589	!
	1590	!-- Read variable
	1591	CALL get_variable( pids_id, 'ssws', tmp_2d%var, nxl, nxr, nys, nyn )
	1592	!
	1593	!-- Initialize passive scalar flux. Initialize horizontal surface elements.
	1594	CALL init_single_surface_properties( surf_def_h(0)%ssws, tmp_2d%var, surf_def_h(0)%ns,&
	1595	tmp_2d%fill, surf_def_h(0)%i, surf_def_h(0)%j )
	1596
	1597	DO l = 0, 3
	1598	CALL init_single_surface_properties( surf_def_v(l)%ssws, tmp_2d%var, &
	1599	surf_def_v(l)%ns, tmp_2d%fill, &
	1600	surf_def_v(l)%i+surf_def_v(l)%ioff, &
	1601	surf_def_v(l)%j+surf_def_v(l)%joff )
	1602	ENDDO
	1603
	1604	ENDIF
	1605	ENDIF
	1606	!
[4648]	1607	!-- Additional variables, can be initialized the
[4150]	1608	!-- same way.
[4514]	1609
[4150]	1610	!
[4187]	1611	!-- Finally, close the input file and deallocate temporary arrays
	1612	DEALLOCATE( vars_pids )
[4648]	1613
[4186]	1614	CALL close_input_file( pids_id )
[4151]	1615	#endif
	1616	DEALLOCATE( tmp_2d%var )
[4150]	1617	ENDIF
	1618	!
[4648]	1619	!-- Finally, if random_heatflux is set, disturb shf at horizontal surfaces. Actually, this should be
	1620	!-- done in surface_mod, where all other initializations of surface quantities are done. However,
	1621	!-- this would create a ring dependency, hence, it is done here. Maybe delete disturb_heatflux and
	1622	!-- tranfer the respective code directly into the initialization in surface_mod.
	1623	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
[2232]	1624	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
[4648]	1625
	1626	IF ( use_surface_fluxes .AND. constant_heatflux .AND. random_heatflux ) THEN
[2232]	1627	IF ( surf_def_h(0)%ns >= 1 ) CALL disturb_heatflux( surf_def_h(0) )
[4671]	1628	IF ( surf_lsm_h(0)%ns >= 1 ) CALL disturb_heatflux( surf_lsm_h(0) )
	1629	IF ( surf_usm_h(0)%ns >= 1 ) CALL disturb_heatflux( surf_usm_h(0) )
[2232]	1630	ENDIF
	1631	ENDIF
[680]	1632
[787]	1633	!
[4648]	1634	!-- Compute total sum of grid points and the mean surface level height for each statistic region.
	1635	!-- These are mainly used for horizontal averaging of turbulence statistics.
	1636	!-- ngp_2dh: number of grid points of a horizontal cross section through the respective statistic
	1637	!-- region
[3747]	1638	!-- ngp_3d: number of grid points of the respective statistic region
[2696]	1639	ngp_2dh_outer_l = 0
	1640	ngp_2dh_outer = 0
	1641	ngp_2dh_s_inner_l = 0
	1642	ngp_2dh_s_inner = 0
	1643	ngp_2dh_l = 0
	1644	ngp_2dh = 0
	1645	ngp_3d_inner_l = 0.0_wp
	1646	ngp_3d_inner = 0
	1647	ngp_3d = 0
	1648	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
	1649
	1650	mean_surface_level_height = 0.0_wp
	1651	mean_surface_level_height_l = 0.0_wp
	1652	!
	1653	!-- To do: New concept for these non-topography grid points!
	1654	DO sr = 0, statistic_regions
	1655	DO i = nxl, nxr
	1656	DO j = nys, nyn
	1657	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
	1658	!
	1659	!-- All xy-grid points
	1660	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
	1661	!
[4648]	1662	!-- Determine mean surface-level height. In case of downward-facing walls are present,
	1663	!-- more than one surface level exist.
	1664	!-- In this case, use the lowest surface-level height.
	1665	IF ( surf_def_h(0)%start_index(j,i) <= surf_def_h(0)%end_index(j,i) ) THEN
[2696]	1666	m = surf_def_h(0)%start_index(j,i)
	1667	k = surf_def_h(0)%k(m)
[4648]	1668	mean_surface_level_height_l(sr) = mean_surface_level_height_l(sr) + zw(k-1)
[2696]	1669	ENDIF
[4671]	1670	IF ( surf_lsm_h(0)%start_index(j,i) <= surf_lsm_h(0)%end_index(j,i) ) THEN
	1671	m = surf_lsm_h(0)%start_index(j,i)
	1672	k = surf_lsm_h(0)%k(m)
[4648]	1673	mean_surface_level_height_l(sr) = mean_surface_level_height_l(sr) + zw(k-1)
[2696]	1674	ENDIF
[4671]	1675	IF ( surf_usm_h(0)%start_index(j,i) <= surf_usm_h(0)%end_index(j,i) ) THEN
	1676	m = surf_usm_h(0)%start_index(j,i)
	1677	k = surf_usm_h(0)%k(m)
[4648]	1678	mean_surface_level_height_l(sr) = mean_surface_level_height_l(sr) + zw(k-1)
[2696]	1679	ENDIF
	1680
	1681	k_surf = k - 1
	1682
	1683	DO k = nzb, nzt+1
	1684	!
	1685	!-- xy-grid points above topography
[4648]	1686	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + &
	1687	MERGE( 1, 0, BTEST( wall_flags_total_0(k,j,i), 24 ) )
[2696]	1688
[4648]	1689	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + &
	1690	MERGE( 1, 0, BTEST( wall_flags_total_0(k,j,i), 22 ) )
[2696]	1691
	1692	ENDDO
	1693	!
	1694	!-- All grid points of the total domain above topography
	1695	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + ( nz - k_surf + 2 )
	1696
	1697
	1698
	1699	ENDIF
	1700	ENDDO
	1701	ENDDO
	1702	ENDDO
[3747]	1703
[2696]	1704	sr = statistic_regions + 1
	1705	#if defined( __parallel )
	1706	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
[4648]	1707	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
	1708	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
	1709	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, MPI_INTEGER, MPI_SUM, &
[2696]	1710	comm2d, ierr )
	1711	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
[4648]	1712	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), (nz+2)*sr, MPI_INTEGER, &
	1713	MPI_SUM, comm2d, ierr )
[2696]	1714	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
[4648]	1715	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, MPI_SUM, comm2d, &
	1716	ierr )
[2696]	1717	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
	1718	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
[4648]	1719	CALL MPI_ALLREDUCE( mean_surface_level_height_l(0), mean_surface_level_height(0), sr, MPI_REAL,&
[2696]	1720	MPI_SUM, comm2d, ierr )
	1721	mean_surface_level_height = mean_surface_level_height / REAL( ngp_2dh )
	1722	#else
	1723	ngp_2dh = ngp_2dh_l
	1724	ngp_2dh_outer = ngp_2dh_outer_l
	1725	ngp_2dh_s_inner = ngp_2dh_s_inner_l
	1726	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
	1727	mean_surface_level_height = mean_surface_level_height_l / REAL( ngp_2dh_l )
	1728	#endif
	1729
[4648]	1730	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
[2696]	1731	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
	1732
	1733	!
[4648]	1734	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics, buoyancy, etc. A
	1735	!-- zero value will occur for cases where all grid points of the respective subdomain lie below the
	1736	!-- surface topography
	1737	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
	1738	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), ngp_3d_inner(:) )
	1739	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
[2696]	1740
[4648]	1741	DEALLOCATE( mean_surface_level_height_l, ngp_2dh_l, ngp_2dh_outer_l, ngp_3d_inner_l, &
	1742	ngp_3d_inner_tmp )
[4548]	1743
[2696]	1744	!
[4648]	1745	!-- Initializae 3D offline nesting in COSMO model and read data from
[3347]	1746	!-- external NetCDF file.
	1747	IF ( nesting_offline ) CALL nesting_offl_init
	1748	!
[787]	1749	!-- Initialize quantities for special advections schemes
	1750	CALL init_advec
[680]	1751
[667]	1752	!
[680]	1753	!-- Impose random perturbation on the horizontal velocity field and then
	1754	!-- remove the divergences from the velocity field at the initial stage
[4648]	1755	IF ( create_disturbances .AND. disturbance_energy_limit /= 0.0_wp .AND. &
	1756	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
[680]	1757	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
	1758
[4648]	1759	IF ( debug_output ) THEN
	1760	CALL debug_message( 'creating disturbances + applying pressure solver', 'start' )
	1761	ENDIF
[3849]	1762	!
	1763	!-- Needed for both disturb_field and pres
	1764	!$ACC DATA &
	1765	!$ACC CREATE(tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1766	!$ACC COPY(u(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1767	!$ACC COPY(v(nzb:nzt+1,nysg:nyng,nxlg:nxrg))
	1768
[2232]	1769	CALL disturb_field( 'u', tend, u )
	1770	CALL disturb_field( 'v', tend, v )
[1384]	1771
[3849]	1772	!$ACC DATA &
	1773	!$ACC CREATE(d(nzb+1:nzt,nys:nyn,nxl:nxr)) &
	1774	!$ACC COPY(w(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1775	!$ACC COPY(p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1776	!$ACC COPYIN(rho_air(nzb:nzt+1), rho_air_zw(nzb:nzt+1)) &
	1777	!$ACC COPYIN(ddzu(1:nzt+1), ddzw(1:nzt+1)) &
[4346]	1778	!$ACC COPYIN(wall_flags_total_0(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
[3849]	1779	!$ACC COPYIN(bc_h(0:1)) &
	1780	!$ACC COPYIN(bc_h(0)%i(1:bc_h(0)%ns)) &
	1781	!$ACC COPYIN(bc_h(0)%j(1:bc_h(0)%ns)) &
	1782	!$ACC COPYIN(bc_h(0)%k(1:bc_h(0)%ns)) &
	1783	!$ACC COPYIN(bc_h(1)%i(1:bc_h(1)%ns)) &
	1784	!$ACC COPYIN(bc_h(1)%j(1:bc_h(1)%ns)) &
	1785	!$ACC COPYIN(bc_h(1)%k(1:bc_h(1)%ns))
	1786
[680]	1787	n_sor = nsor_ini
	1788	CALL pres
	1789	n_sor = nsor
[1384]	1790
[3849]	1791	!$ACC END DATA
	1792	!$ACC END DATA
	1793
[4648]	1794	IF ( debug_output ) THEN
	1795	CALL debug_message( 'creating disturbances + applying pressure solver', 'end' )
	1796	ENDIF
[3987]	1797
[680]	1798	ENDIF
	1799
[3294]	1800	IF ( .NOT. ocean_mode ) THEN
[3274]	1801
	1802	ALLOCATE( hyp(nzb:nzt+1) )
	1803	ALLOCATE( d_exner(nzb:nzt+1) )
	1804	ALLOCATE( exner(nzb:nzt+1) )
	1805	ALLOCATE( hyrho(nzb:nzt+1) )
[1849]	1806	!
[3274]	1807	!-- Check temperature in case of too large domain height
	1808	DO k = nzb, nzt+1
[4648]	1809	IF ( ( pt_surface * exner_function( surface_pressure * 100.0_wp ) - g/c_p * zu(k) ) &
	1810	< 0.0_wp ) THEN
	1811	WRITE( message_string, * ) 'absolute temperature < 0.0 at zu(', k, ') = ', zu(k)
[3685]	1812	CALL message( 'init_3d_model', 'PA0142', 1, 2, 0, 6, 0 )
[3274]	1813	ENDIF
	1814	ENDDO
	1815
	1816	!
	1817	!-- Calculate vertical profile of the hydrostatic pressure (hyp)
[4648]	1818	hyp = barometric_formula( zu, pt_surface * exner_function( surface_pressure * 100.0_wp ),&
	1819	surface_pressure * 100.0_wp )
	1820	d_exner = exner_function_invers( hyp )
	1821	exner = 1.0_wp / exner_function_invers( hyp )
	1822	hyrho = ideal_gas_law_rho_pt( hyp, pt_init )
[3274]	1823	!
	1824	!-- Compute reference density
[4648]	1825	rho_surface = ideal_gas_law_rho( surface_pressure * 100.0_wp, &
	1826	pt_surface * exner_function( surface_pressure * 100.0_wp ) )
[3274]	1827
[96]	1828	ENDIF
[1]	1829
	1830	!
	1831	!-- If required, initialize particles
[3159]	1832	IF ( agents_active ) CALL mas_init
	1833	!
[3937]	1834	!-- Initialization of synthetic turbulence generator
[4848]	1835	IF ( syn_turb_gen ) CALL stg_init
[2696]	1836	!
[3685]	1837	!-- Initializing actions for all other modules
	1838	CALL module_interface_init
[2696]	1839	!
[4648]	1840	!-- Initialize surface layer (done after LSM as roughness length are required for initialization
[3685]	1841	IF ( constant_flux_layer ) CALL init_surface_layer_fluxes
[2977]	1842	!
[3421]	1843	!-- Initialize surface data output
[3685]	1844	IF ( surface_output ) CALL surface_data_output_init
[3472]	1845	!
[4648]	1846	!-- Initialize the ws-scheme.
	1847	IF ( ws_scheme_sca .OR. ws_scheme_mom ) CALL ws_init
[3711]	1848	!
	1849	!-- Perform post-initializing checks for all other modules
	1850	CALL module_interface_init_checks
[1]	1851
	1852	!
[4648]	1853	!-- Initialize surface forcing corresponding to large-scale forcing. Therein,
[4548]	1854	!-- initialize heat-fluxes, etc. via datatype. Revise it later!
[4648]	1855	IF ( large_scale_forcing .AND. lsf_surf ) THEN
[4548]	1856	IF ( use_surface_fluxes .AND. constant_heatflux ) THEN
[4648]	1857	CALL ls_forcing_surf( simulated_time )
[4548]	1858	ENDIF
	1859	ENDIF
	1860	!
[4648]	1861	!-- Setting weighting factors for calculation of perturbation pressure and turbulent quantities from
	1862	!-- the RK substeps.
	1863	IF ( TRIM( timestep_scheme ) == 'runge-kutta-3' ) THEN ! for RK3-method
[709]	1864
[1322]	1865	weight_substep(1) = 1._wp/6._wp
	1866	weight_substep(2) = 3._wp/10._wp
	1867	weight_substep(3) = 8._wp/15._wp
[709]	1868
[1322]	1869	weight_pres(1) = 1._wp/3._wp
	1870	weight_pres(2) = 5._wp/12._wp
	1871	weight_pres(3) = 1._wp/4._wp
[709]	1872
[4648]	1873	ELSEIF ( TRIM( timestep_scheme ) == 'runge-kutta-2' ) THEN ! for RK2-method
[709]	1874
[1322]	1875	weight_substep(1) = 1._wp/2._wp
	1876	weight_substep(2) = 1._wp/2._wp
[4648]	1877
[1322]	1878	weight_pres(1) = 1._wp/2._wp
[4648]	1879	weight_pres(2) = 1._wp/2._wp
[709]	1880
[1001]	1881	ELSE ! for Euler-method
[709]	1882
[4648]	1883	weight_substep(1) = 1.0_wp
	1884	weight_pres(1) = 1.0_wp
[709]	1885
[673]	1886	ENDIF
	1887
	1888	!
[1]	1889	!-- Initialize Rayleigh damping factors
[1340]	1890	rdf = 0.0_wp
	1891	rdf_sc = 0.0_wp
	1892	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
[3294]	1893
	1894	IF ( .NOT. ocean_mode ) THEN
[108]	1895	DO k = nzb+1, nzt
	1896	IF ( zu(k) >= rayleigh_damping_height ) THEN
[4648]	1897	rdf(k) = rayleigh_damping_factor * &
	1898	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
	1899	/ ( zu(nzt) - rayleigh_damping_height ) ) &
	1900	)**2
[108]	1901	ENDIF
	1902	ENDDO
	1903	ELSE
[3294]	1904	!
[4648]	1905	!-- In ocean mode, rayleigh damping is applied in the lower part of the model domain
[108]	1906	DO k = nzt, nzb+1, -1
	1907	IF ( zu(k) <= rayleigh_damping_height ) THEN
[4648]	1908	rdf(k) = rayleigh_damping_factor * &
	1909	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
	1910	/ ( rayleigh_damping_height - zu(nzb+1) ) ) &
	1911	)**2
[108]	1912	ENDIF
	1913	ENDDO
	1914	ENDIF
[3294]	1915
[1]	1916	ENDIF
[785]	1917	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
[1]	1918
	1919	!
[4648]	1920	!-- Initialize the starting level and the vertical smoothing factor used for the external pressure
	1921	!-- gradient
[1340]	1922	dp_smooth_factor = 1.0_wp
[240]	1923	IF ( dp_external ) THEN
	1924	!
[4648]	1925	!-- Set the starting level dp_level_ind_b only if it has not been set before (e.g. in init_grid).
[240]	1926	IF ( dp_level_ind_b == 0 ) THEN
	1927	ind_array = MINLOC( ABS( dp_level_b - zu ) )
[4648]	1928	dp_level_ind_b = ind_array(1) - 1 + nzb
[240]	1929	! MINLOC uses lower array bound 1
	1930	ENDIF
	1931	IF ( dp_smooth ) THEN
[1340]	1932	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
[240]	1933	DO k = dp_level_ind_b+1, nzt
[4648]	1934	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
	1935	( REAL( k - dp_level_ind_b, KIND=wp ) / &
	1936	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
[240]	1937	ENDDO
	1938	ENDIF
	1939	ENDIF
	1940
	1941	!
[4648]	1942	!-- Initialize damping zone for the potential temperature in case of non-cyclic lateral boundaries.
	1943	!-- The damping zone has the maximum value at the inflow boundary and decreases to zero at
	1944	!-- pt_damping_width.
[1340]	1945	ptdf_x = 0.0_wp
	1946	ptdf_y = 0.0_wp
[1159]	1947	IF ( bc_lr_dirrad ) THEN
[996]	1948	DO i = nxl, nxr
[978]	1949	IF ( ( i * dx ) < pt_damping_width ) THEN
[4648]	1950	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
	1951	REAL( pt_damping_width - i * dx, KIND=wp ) / &
	1952	REAL( pt_damping_width, KIND=wp ) ) )**2
	1953	ENDIF
[73]	1954	ENDDO
[1159]	1955	ELSEIF ( bc_lr_raddir ) THEN
[996]	1956	DO i = nxl, nxr
[978]	1957	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
[4648]	1958	ptdf_x(i) = pt_damping_factor * SIN( pi * 0.5_wp * &
	1959	( ( i - nx ) * dx + pt_damping_width ) / &
	1960	REAL( pt_damping_width, KIND=wp ) )**2
[73]	1961	ENDIF
[4648]	1962	ENDDO
[1159]	1963	ELSEIF ( bc_ns_dirrad ) THEN
[996]	1964	DO j = nys, nyn
[978]	1965	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
[4648]	1966	ptdf_y(j) = pt_damping_factor * SIN( pi * 0.5_wp * &
	1967	( ( j - ny ) * dy + pt_damping_width ) / &
	1968	REAL( pt_damping_width, KIND=wp ) )**2
[1]	1969	ENDIF
[4648]	1970	ENDDO
[1159]	1971	ELSEIF ( bc_ns_raddir ) THEN
[996]	1972	DO j = nys, nyn
[978]	1973	IF ( ( j * dy ) < pt_damping_width ) THEN
[4648]	1974	ptdf_y(j) = pt_damping_factor * SIN( pi * 0.5_wp * &
	1975	( pt_damping_width - j * dy ) / &
	1976	REAL( pt_damping_width, KIND=wp ) )**2
[1]	1977	ENDIF
[73]	1978	ENDDO
[1]	1979	ENDIF
[51]	1980
[1]	1981	!
[4648]	1982	!-- Input binary data file is not needed anymore. This line must be placed after call of user_init!
[1]	1983	CALL close_file( 13 )
[2934]	1984	!
[4648]	1985	!-- In case of nesting, put an barrier to assure that all parent and child domains finished
	1986	!-- initialization.
[2934]	1987	#if defined( __parallel )
	1988	IF ( nested_run ) CALL MPI_BARRIER( MPI_COMM_WORLD, ierr )
	1989	#endif
[1]	1990
[2934]	1991
[3987]	1992	CALL location_message( 'model initialization', 'finished' )
[1]	1993
	1994	END SUBROUTINE init_3d_model

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