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init_3d_model.f90 @ 4327

Last change on this file since 4327 was 4286, checked in by resler, 5 years ago

Merge branch resler into trunk

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/palm/branches/chemistry/SOURCE/init_3d_model.f90	2047-3190,3218-3297
/palm/branches/forwind/SOURCE/init_3d_model.f90	1564-1913
/palm/branches/mosaik_M2/init_3d_model.f90	2360-3471
/palm/branches/palm4u/SOURCE/init_3d_model.f90	2540-2692
/palm/branches/rans/SOURCE/init_3d_model.f90	2078-3128
/palm/branches/resler/SOURCE/init_3d_model.f90	2023-4285
/palm/branches/salsa/SOURCE/init_3d_model.f90	2503-3581

File size: 81.2 KB

Rev	Line
[1682]	1	!> @file init_3d_model.f90
[2000]	2	!------------------------------------------------------------------------------!
[2696]	3	! This file is part of the PALM model system.
[1036]	4	!
[2000]	5	! PALM is free software: you can redistribute it and/or modify it under the
	6	! terms of the GNU General Public License as published by the Free Software
	7	! Foundation, either version 3 of the License, or (at your option) any later
	8	! version.
[1036]	9	!
	10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
	11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
	12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
	13	!
	14	! You should have received a copy of the GNU General Public License along with
	15	! PALM. If not, see <http://www.gnu.org/licenses/>.
	16	!
[3648]	17	! Copyright 1997-2019 Leibniz Universitaet Hannover
[2000]	18	!------------------------------------------------------------------------------!
[1036]	19	!
[254]	20	! Current revisions:
[732]	21	! ------------------
[2233]	22	!
[3589]	23	!
[2233]	24	! Former revisions:
	25	! -----------------
	26	! $Id: init_3d_model.f90 4286 2019-10-30 16:01:14Z Giersch $
[4227]	27	! implement new palm_date_time_mod
	28	!
	29	! 4223 2019-09-10 09:20:47Z gronemeier
[4187]	30	! Deallocate temporary string array since it may be re-used to read different
	31	! input data in other modules
	32	!
	33	! 4186 2019-08-23 16:06:14Z suehring
[4186]	34	! Design change, use variables defined in netcdf_data_input_mod to read netcd
	35	! variables rather than define local ones.
	36	!
	37	! 4185 2019-08-23 13:49:38Z oliver.maas
[4185]	38	! For initializing_actions = ' cyclic_fill':
	39	! Overwrite u_init, v_init, pt_init, q_init and s_init with the
	40	! (temporally) and horizontally averaged vertical profiles from the end
	41	! of the prerun, because these profiles shall be used as the basic state
	42	! for the rayleigh damping and the pt_damping.
	43	!
	44	! 4182 2019-08-22 15:20:23Z scharf
[4182]	45	! Corrected "Former revisions" section
	46	!
	47	! 4168 2019-08-16 13:50:17Z suehring
[4168]	48	! Replace function get_topography_top_index by topo_top_ind
	49	!
	50	! 4151 2019-08-09 08:24:30Z suehring
[4151]	51	! Add netcdf directive around input calls (fix for last commit)
	52	!
	53	! 4150 2019-08-08 20:00:47Z suehring
[4150]	54	! Input of additional surface variables independent on land- or urban-surface
	55	! model
	56	!
	57	! 4131 2019-08-02 11:06:18Z monakurppa
[4131]	58	! Allocate sums and sums_l to allow profile output for salsa variables.
	59	!
	60	! 4130 2019-08-01 13:04:13Z suehring
[4130]	61	! Effectively reduce 3D initialization to 1D initial profiles. This is because
	62	! 3D initialization produces structures in the w-component that are correlated
	63	! with the processor grid for some unknown reason
	64	!
	65	! 4090 2019-07-11 15:06:47Z Giersch
[4090]	66	! Unused variables removed
	67	!
	68	! 4088 2019-07-11 13:57:56Z Giersch
[4088]	69	! Pressure and density profile calculations revised using basic functions
	70	!
	71	! 4048 2019-06-21 21:00:21Z knoop
[4028]	72	! Further modularization of particle code components
	73	!
	74	! 4017 2019-06-06 12:16:46Z schwenkel
[3987]	75	! Convert most location messages to debug messages to reduce output in
	76	! job logfile to a minimum
	77	!
	78	!
[3939]	79	! unused variable removed
	80	!
	81	! 3937 2019-04-29 15:09:07Z suehring
[3937]	82	! Move initialization of synthetic turbulence generator behind initialization
	83	! of offline nesting. Remove call for stg_adjust, as this is now already done
	84	! in stg_init.
	85	!
	86	! 3900 2019-04-16 15:17:43Z suehring
[3900]	87	! Fix problem with LOD = 2 initialization
	88	!
	89	! 3885 2019-04-11 11:29:34Z kanani
[3885]	90	! Changes related to global restructuring of location messages and introduction
	91	! of additional debug messages
	92	!
	93	! 3849 2019-04-01 16:35:16Z knoop
[3747]	94	! Move initialization of rmask before initializing user_init_arrays
	95	!
	96	! 3711 2019-01-31 13:44:26Z knoop
[3711]	97	! Introduced module_interface_init_checks for post-init checks in modules
	98	!
	99	! 3700 2019-01-26 17:03:42Z knoop
[3685]	100	! Some interface calls moved to module_interface + cleanup
	101	!
	102	! 3648 2019-01-02 16:35:46Z suehring
[3648]	103	! Rename subroutines for surface-data output
[3569]	104	!
[4182]	105	! Revision 1.1 1998/03/09 16:22:22 raasch
	106	! Initial revision
	107	!
	108	!
[1]	109	! Description:
	110	! ------------
[1682]	111	!> Allocation of arrays and initialization of the 3D model via
	112	!> a) pre-run the 1D model
	113	!> or
	114	!> b) pre-set constant linear profiles
	115	!> or
	116	!> c) read values of a previous run
[1]	117	!------------------------------------------------------------------------------!
[1682]	118	SUBROUTINE init_3d_model
[1]	119
[3298]	120
[667]	121	USE advec_ws
[1320]	122
[1]	123	USE arrays_3d
[1849]	124
[3274]	125	USE basic_constants_and_equations_mod, &
[4090]	126	ONLY: c_p, g, l_v, pi, exner_function, exner_function_invers, &
[3274]	127	ideal_gas_law_rho, ideal_gas_law_rho_pt, barometric_formula
	128
	129	USE bulk_cloud_model_mod, &
[3685]	130	ONLY: bulk_cloud_model
[3274]	131
[3298]	132	USE chem_modules, &
[3685]	133	ONLY: max_pr_cs ! ToDo: this dependency needs to be removed cause it is ugly #new_dom
[3298]	134
[1]	135	USE control_parameters
[3298]	136
[1320]	137	USE grid_variables, &
[2037]	138	ONLY: dx, dy, ddx2_mg, ddy2_mg
[2817]	139
[1]	140	USE indices
[3469]	141
[1320]	142	USE kinds
[1496]	143
[2320]	144	USE lsf_nudging_mod, &
[3685]	145	ONLY: ls_forcing_surf
[1849]	146
[2338]	147	USE model_1d_mod, &
[3241]	148	ONLY: init_1d_model, l1d, u1d, v1d
[2338]	149
[3685]	150	USE module_interface, &
[3711]	151	ONLY: module_interface_init_arrays, &
	152	module_interface_init, &
	153	module_interface_init_checks
[3685]	154
[3159]	155	USE multi_agent_system_mod, &
	156	ONLY: agents_active, mas_init
	157
[1783]	158	USE netcdf_interface, &
[3700]	159	ONLY: dots_max
[2696]	160
[2906]	161	USE netcdf_data_input_mod, &
[4150]	162	ONLY: char_fill, &
	163	check_existence, &
	164	close_input_file, &
	165	get_attribute, &
	166	get_variable, &
	167	init_3d, &
	168	input_pids_static, &
	169	inquire_num_variables, &
	170	inquire_variable_names, &
	171	input_file_static, &
	172	netcdf_data_input_init_3d, &
[4186]	173	num_var_pids, &
[4150]	174	open_read_file, &
[4186]	175	pids_id, &
	176	real_2d, &
	177	vars_pids
[4150]	178
[3347]	179	USE nesting_offl_mod, &
	180	ONLY: nesting_offl_init
[3294]	181
[4227]	182	USE palm_date_time_mod, &
	183	ONLY: set_reference_date_time
	184
[1]	185	USE pegrid
[3298]	186
[3524]	187	#if defined( __parallel )
[2934]	188	USE pmc_interface, &
	189	ONLY: nested_run
[3524]	190	#endif
[2934]	191
[1320]	192	USE random_function_mod
[3685]	193
[1400]	194	USE random_generator_parallel, &
[2172]	195	ONLY: init_parallel_random_generator
[3685]	196
[2894]	197	USE read_restart_data_mod, &
[3685]	198	ONLY: rrd_read_parts_of_global, rrd_local
	199
[1320]	200	USE statistics, &
[1738]	201	ONLY: hom, hom_sum, mean_surface_level_height, pr_palm, rmask, &
[1833]	202	statistic_regions, sums, sums_divnew_l, sums_divold_l, sums_l, &
[2277]	203	sums_l_l, sums_wsts_bc_l, ts_value, &
[1833]	204	weight_pres, weight_substep
[2259]	205
	206	USE synthetic_turbulence_generator_mod, &
[3939]	207	ONLY: stg_init, use_syn_turb_gen
[3685]	208
[1691]	209	USE surface_layer_fluxes_mod, &
	210	ONLY: init_surface_layer_fluxes
[2232]	211
	212	USE surface_mod, &
[4150]	213	ONLY : init_single_surface_properties, &
	214	init_surface_arrays, &
	215	init_surfaces, &
	216	surf_def_h, &
	217	surf_def_v, &
	218	surf_lsm_h, &
[4168]	219	surf_usm_h
[3685]	220
[3849]	221	#if defined( _OPENACC )
	222	USE surface_mod, &
	223	ONLY : bc_h
	224	#endif
	225
[3648]	226	USE surface_data_output_mod, &
	227	ONLY: surface_data_output_init
[3685]	228
[2007]	229	USE transpose_indices
[1]	230
	231	IMPLICIT NONE
[4150]	232
	233	INTEGER(iwp) :: i !< grid index in x direction
	234	INTEGER(iwp) :: ind_array(1) !< dummy used to determine start index for external pressure forcing
	235	INTEGER(iwp) :: j !< grid index in y direction
	236	INTEGER(iwp) :: k !< grid index in z direction
	237	INTEGER(iwp) :: k_surf !< surface level index
	238	INTEGER(iwp) :: l !< running index over surface orientation
	239	INTEGER(iwp) :: m !< index of surface element in surface data type
	240	INTEGER(iwp) :: nz_u_shift !< topography-top index on u-grid, used to vertically shift initial profiles
	241	INTEGER(iwp) :: nz_v_shift !< topography-top index on v-grid, used to vertically shift initial profiles
	242	INTEGER(iwp) :: nz_w_shift !< topography-top index on w-grid, used to vertically shift initial profiles
	243	INTEGER(iwp) :: nz_s_shift !< topography-top index on scalar-grid, used to vertically shift initial profiles
	244	INTEGER(iwp) :: nz_u_shift_l !< topography-top index on u-grid, used to vertically shift initial profiles
	245	INTEGER(iwp) :: nz_v_shift_l !< topography-top index on v-grid, used to vertically shift initial profiles
	246	INTEGER(iwp) :: nz_w_shift_l !< topography-top index on w-grid, used to vertically shift initial profiles
	247	INTEGER(iwp) :: nz_s_shift_l !< topography-top index on scalar-grid, used to vertically shift initial profiles
	248	INTEGER(iwp) :: nzt_l !< index of top PE boundary for multigrid level
	249	INTEGER(iwp) :: sr !< index of statistic region
[1]	250
[3547]	251	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ngp_2dh_l !< toal number of horizontal grid points in statistical region on subdomain
[1]	252
[3547]	253	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_outer_l !< number of horizontal non-wall bounded grid points on subdomain
	254	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: ngp_2dh_s_inner_l !< number of horizontal non-topography grid points on subdomain
[1]	255
[4150]	256
	257
[3182]	258	REAL(wp), DIMENSION(:), ALLOCATABLE :: init_l !< dummy array used for averaging 3D data to obtain inital profiles
[2037]	259	REAL(wp), DIMENSION(:), ALLOCATABLE :: p_hydrostatic !< hydrostatic pressure
	260
	261	REAL(wp) :: dx_l !< grid spacing along x on different multigrid level
	262	REAL(wp) :: dy_l !< grid spacing along y on different multigrid level
	263
[3547]	264	REAL(wp), DIMENSION(1:3) :: volume_flow_area_l !< area of lateral and top model domain surface on local subdomain
	265	REAL(wp), DIMENSION(1:3) :: volume_flow_initial_l !< initial volume flow into model domain
[1]	266
[3547]	267	REAL(wp), DIMENSION(:), ALLOCATABLE :: mean_surface_level_height_l !< mean surface level height on subdomain
	268	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_l !< total number of non-topography grid points on subdomain
	269	REAL(wp), DIMENSION(:), ALLOCATABLE :: ngp_3d_inner_tmp !< total number of non-topography grid points
[1]	270
[4150]	271	TYPE(real_2d) :: tmp_2d !< temporary variable to input additional surface-data from static file
	272
[3987]	273	CALL location_message( 'model initialization', 'start' )
[4227]	274	!
	275	!-- Set reference date-time
	276	CALL set_reference_date_time( date_time_str=origin_date_time )
[3987]	277
	278	IF ( debug_output ) CALL debug_message( 'allocating arrays', 'start' )
[1]	279	!
	280	!-- Allocate arrays
[1788]	281	ALLOCATE( mean_surface_level_height(0:statistic_regions), &
	282	mean_surface_level_height_l(0:statistic_regions), &
	283	ngp_2dh(0:statistic_regions), ngp_2dh_l(0:statistic_regions), &
	284	ngp_3d(0:statistic_regions), &
	285	ngp_3d_inner(0:statistic_regions), &
	286	ngp_3d_inner_l(0:statistic_regions), &
	287	ngp_3d_inner_tmp(0:statistic_regions), &
	288	sums_divnew_l(0:statistic_regions), &
[1]	289	sums_divold_l(0:statistic_regions) )
[1195]	290	ALLOCATE( dp_smooth_factor(nzb:nzt), rdf(nzb+1:nzt), rdf_sc(nzb+1:nzt) )
[1788]	291	ALLOCATE( ngp_2dh_outer(nzb:nzt+1,0:statistic_regions), &
	292	ngp_2dh_outer_l(nzb:nzt+1,0:statistic_regions), &
	293	ngp_2dh_s_inner(nzb:nzt+1,0:statistic_regions), &
	294	ngp_2dh_s_inner_l(nzb:nzt+1,0:statistic_regions), &
	295	rmask(nysg:nyng,nxlg:nxrg,0:statistic_regions), &
[4131]	296	sums(nzb:nzt+1,pr_palm+max_pr_user+max_pr_cs+max_pr_salsa), &
	297	sums_l(nzb:nzt+1,pr_palm+max_pr_user+max_pr_cs+max_pr_salsa,0:threads_per_task-1), &
[1788]	298	sums_l_l(nzb:nzt+1,0:statistic_regions,0:threads_per_task-1), &
[3700]	299	sums_wsts_bc_l(nzb:nzt+1,0:statistic_regions) )
	300	ALLOCATE( ts_value(dots_max,0:statistic_regions) )
[978]	301	ALLOCATE( ptdf_x(nxlg:nxrg), ptdf_y(nysg:nyng) )
[1]	302
[1788]	303	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr), &
	304	p(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[1010]	305	tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	306
[2696]	307	ALLOCATE( pt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[1788]	308	pt_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	309	u_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	310	u_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	311	u_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	312	v_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	313	v_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	314	v_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	315	w_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	316	w_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[667]	317	w_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1788]	318	IF ( .NOT. neutral ) THEN
[1032]	319	ALLOCATE( pt_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	320	ENDIF
[673]	321	!
[3747]	322	!-- Pre-set masks for regional statistics. Default is the total model domain.
	323	!-- Ghost points are excluded because counting values at the ghost boundaries
	324	!-- would bias the statistics
	325	rmask = 1.0_wp
	326	rmask(:,nxlg:nxl-1,:) = 0.0_wp; rmask(:,nxr+1:nxrg,:) = 0.0_wp
	327	rmask(nysg:nys-1,:,:) = 0.0_wp; rmask(nyn+1:nyng,:,:) = 0.0_wp
	328	!
[707]	329	!-- Following array is required for perturbation pressure within the iterative
	330	!-- pressure solvers. For the multistep schemes (Runge-Kutta), array p holds
	331	!-- the weighted average of the substeps and cannot be used in the Poisson
	332	!-- solver.
	333	IF ( psolver == 'sor' ) THEN
	334	ALLOCATE( p_loc(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1575]	335	ELSEIF ( psolver(1:9) == 'multigrid' ) THEN
[707]	336	!
	337	!-- For performance reasons, multigrid is using one ghost layer only
	338	ALLOCATE( p_loc(nzb:nzt+1,nys-1:nyn+1,nxl-1:nxr+1) )
[673]	339	ENDIF
[1]	340
[1111]	341	!
	342	!-- Array for storing constant coeffficients of the tridiagonal solver
	343	IF ( psolver == 'poisfft' ) THEN
[1212]	344	ALLOCATE( tri(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1,2) )
[1111]	345	ALLOCATE( tric(nxl_z:nxr_z,nys_z:nyn_z,0:nz-1) )
	346	ENDIF
	347
[1960]	348	IF ( humidity ) THEN
[1]	349	!
[1960]	350	!-- 3D-humidity
[1788]	351	ALLOCATE( q_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	352	q_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
[3011]	353	q_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	354	vpt_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	355	ENDIF
[1960]	356
	357	IF ( passive_scalar ) THEN
[1]	358
[1960]	359	!
	360	!-- 3D scalar arrays
	361	ALLOCATE( s_1(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	362	s_2(nzb:nzt+1,nysg:nyng,nxlg:nxrg), &
	363	s_3(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[3636]	364
[1960]	365	ENDIF
	366
[1]	367	!
[3302]	368	!-- Allocate and set 1d-profiles for Stokes drift velocity. It may be set to
	369	!-- non-zero values later in ocean_init
	370	ALLOCATE( u_stokes_zu(nzb:nzt+1), u_stokes_zw(nzb:nzt+1), &
	371	v_stokes_zu(nzb:nzt+1), v_stokes_zw(nzb:nzt+1) )
	372	u_stokes_zu(:) = 0.0_wp
	373	u_stokes_zw(:) = 0.0_wp
	374	v_stokes_zu(:) = 0.0_wp
	375	v_stokes_zw(:) = 0.0_wp
	376
	377	!
[2037]	378	!-- Allocation of anelastic and Boussinesq approximation specific arrays
	379	ALLOCATE( p_hydrostatic(nzb:nzt+1) )
	380	ALLOCATE( rho_air(nzb:nzt+1) )
	381	ALLOCATE( rho_air_zw(nzb:nzt+1) )
	382	ALLOCATE( drho_air(nzb:nzt+1) )
	383	ALLOCATE( drho_air_zw(nzb:nzt+1) )
	384	!
[4088]	385	!-- Density profile calculation for anelastic and Boussinesq approximation
	386	!-- In case of a Boussinesq approximation, a constant density is calculated
	387	!-- mainly for output purposes. This density do not need to be considered
	388	!-- in the model's system of equations.
	389	IF ( TRIM( approximation ) == 'anelastic' ) THEN
[2037]	390	DO k = nzb, nzt+1
[4088]	391	p_hydrostatic(k) = barometric_formula(zu(k), pt_surface * &
	392	exner_function(surface_pressure * 100.0_wp), &
	393	surface_pressure * 100.0_wp)
	394
	395	rho_air(k) = ideal_gas_law_rho_pt(p_hydrostatic(k), pt_init(k))
[2037]	396	ENDDO
[4088]	397
[2037]	398	DO k = nzb, nzt
	399	rho_air_zw(k) = 0.5_wp * ( rho_air(k) + rho_air(k+1) )
	400	ENDDO
[4088]	401
[2037]	402	rho_air_zw(nzt+1) = rho_air_zw(nzt) &
	403	+ 2.0_wp * ( rho_air(nzt+1) - rho_air_zw(nzt) )
[4088]	404
[2037]	405	ELSE
[2252]	406	DO k = nzb, nzt+1
[4088]	407	p_hydrostatic(k) = barometric_formula(zu(nzb), pt_surface * &
	408	exner_function(surface_pressure * 100.0_wp), &
	409	surface_pressure * 100.0_wp)
	410
	411	rho_air(k) = ideal_gas_law_rho_pt(p_hydrostatic(k), pt_init(nzb))
[2252]	412	ENDDO
[4088]	413
[2252]	414	DO k = nzb, nzt
	415	rho_air_zw(k) = 0.5_wp * ( rho_air(k) + rho_air(k+1) )
	416	ENDDO
[4088]	417
[2252]	418	rho_air_zw(nzt+1) = rho_air_zw(nzt) &
	419	+ 2.0_wp * ( rho_air(nzt+1) - rho_air_zw(nzt) )
[4088]	420
[2037]	421	ENDIF
[2696]	422	!
[2037]	423	!-- compute the inverse density array in order to avoid expencive divisions
	424	drho_air = 1.0_wp / rho_air
	425	drho_air_zw = 1.0_wp / rho_air_zw
	426
	427	!
	428	!-- Allocation of flux conversion arrays
	429	ALLOCATE( heatflux_input_conversion(nzb:nzt+1) )
	430	ALLOCATE( waterflux_input_conversion(nzb:nzt+1) )
	431	ALLOCATE( momentumflux_input_conversion(nzb:nzt+1) )
	432	ALLOCATE( heatflux_output_conversion(nzb:nzt+1) )
	433	ALLOCATE( waterflux_output_conversion(nzb:nzt+1) )
	434	ALLOCATE( momentumflux_output_conversion(nzb:nzt+1) )
	435
	436	!
	437	!-- calculate flux conversion factors according to approximation and in-/output mode
	438	DO k = nzb, nzt+1
	439
	440	IF ( TRIM( flux_input_mode ) == 'kinematic' ) THEN
	441	heatflux_input_conversion(k) = rho_air_zw(k)
	442	waterflux_input_conversion(k) = rho_air_zw(k)
	443	momentumflux_input_conversion(k) = rho_air_zw(k)
	444	ELSEIF ( TRIM( flux_input_mode ) == 'dynamic' ) THEN
[3274]	445	heatflux_input_conversion(k) = 1.0_wp / c_p
[2037]	446	waterflux_input_conversion(k) = 1.0_wp / l_v
	447	momentumflux_input_conversion(k) = 1.0_wp
	448	ENDIF
	449
	450	IF ( TRIM( flux_output_mode ) == 'kinematic' ) THEN
	451	heatflux_output_conversion(k) = drho_air_zw(k)
	452	waterflux_output_conversion(k) = drho_air_zw(k)
	453	momentumflux_output_conversion(k) = drho_air_zw(k)
	454	ELSEIF ( TRIM( flux_output_mode ) == 'dynamic' ) THEN
[3274]	455	heatflux_output_conversion(k) = c_p
[2037]	456	waterflux_output_conversion(k) = l_v
	457	momentumflux_output_conversion(k) = 1.0_wp
	458	ENDIF
	459
	460	IF ( .NOT. humidity ) THEN
	461	waterflux_input_conversion(k) = 1.0_wp
	462	waterflux_output_conversion(k) = 1.0_wp
	463	ENDIF
	464
	465	ENDDO
	466
	467	!
	468	!-- In case of multigrid method, compute grid lengths and grid factors for the
	469	!-- grid levels with respective density on each grid
	470	IF ( psolver(1:9) == 'multigrid' ) THEN
	471
	472	ALLOCATE( ddx2_mg(maximum_grid_level) )
	473	ALLOCATE( ddy2_mg(maximum_grid_level) )
	474	ALLOCATE( dzu_mg(nzb+1:nzt+1,maximum_grid_level) )
	475	ALLOCATE( dzw_mg(nzb+1:nzt+1,maximum_grid_level) )
	476	ALLOCATE( f1_mg(nzb+1:nzt,maximum_grid_level) )
	477	ALLOCATE( f2_mg(nzb+1:nzt,maximum_grid_level) )
	478	ALLOCATE( f3_mg(nzb+1:nzt,maximum_grid_level) )
	479	ALLOCATE( rho_air_mg(nzb:nzt+1,maximum_grid_level) )
	480	ALLOCATE( rho_air_zw_mg(nzb:nzt+1,maximum_grid_level) )
	481
	482	dzu_mg(:,maximum_grid_level) = dzu
	483	rho_air_mg(:,maximum_grid_level) = rho_air
	484	!
	485	!-- Next line to ensure an equally spaced grid.
	486	dzu_mg(1,maximum_grid_level) = dzu(2)
	487	rho_air_mg(nzb,maximum_grid_level) = rho_air(nzb) + &
	488	(rho_air(nzb) - rho_air(nzb+1))
	489
	490	dzw_mg(:,maximum_grid_level) = dzw
	491	rho_air_zw_mg(:,maximum_grid_level) = rho_air_zw
	492	nzt_l = nzt
	493	DO l = maximum_grid_level-1, 1, -1
	494	dzu_mg(nzb+1,l) = 2.0_wp * dzu_mg(nzb+1,l+1)
	495	dzw_mg(nzb+1,l) = 2.0_wp * dzw_mg(nzb+1,l+1)
	496	rho_air_mg(nzb,l) = rho_air_mg(nzb,l+1) + (rho_air_mg(nzb,l+1) - rho_air_mg(nzb+1,l+1))
	497	rho_air_zw_mg(nzb,l) = rho_air_zw_mg(nzb,l+1) + (rho_air_zw_mg(nzb,l+1) - rho_air_zw_mg(nzb+1,l+1))
	498	rho_air_mg(nzb+1,l) = rho_air_mg(nzb+1,l+1)
	499	rho_air_zw_mg(nzb+1,l) = rho_air_zw_mg(nzb+1,l+1)
	500	nzt_l = nzt_l / 2
	501	DO k = 2, nzt_l+1
	502	dzu_mg(k,l) = dzu_mg(2k-2,l+1) + dzu_mg(2k-1,l+1)
	503	dzw_mg(k,l) = dzw_mg(2k-2,l+1) + dzw_mg(2k-1,l+1)
	504	rho_air_mg(k,l) = rho_air_mg(2*k-1,l+1)
	505	rho_air_zw_mg(k,l) = rho_air_zw_mg(2*k-1,l+1)
	506	ENDDO
	507	ENDDO
	508
	509	nzt_l = nzt
	510	dx_l = dx
	511	dy_l = dy
	512	DO l = maximum_grid_level, 1, -1
	513	ddx2_mg(l) = 1.0_wp / dx_l**2
	514	ddy2_mg(l) = 1.0_wp / dy_l**2
	515	DO k = nzb+1, nzt_l
	516	f2_mg(k,l) = rho_air_zw_mg(k,l) / ( dzu_mg(k+1,l) * dzw_mg(k,l) )
	517	f3_mg(k,l) = rho_air_zw_mg(k-1,l) / ( dzu_mg(k,l) * dzw_mg(k,l) )
	518	f1_mg(k,l) = 2.0_wp * ( ddx2_mg(l) + ddy2_mg(l) ) &
	519	* rho_air_mg(k,l) + f2_mg(k,l) + f3_mg(k,l)
	520	ENDDO
	521	nzt_l = nzt_l / 2
	522	dx_l = dx_l * 2.0_wp
	523	dy_l = dy_l * 2.0_wp
	524	ENDDO
	525
	526	ENDIF
	527
	528	!
[1299]	529	!-- 1D-array for large scale subsidence velocity
[1361]	530	IF ( .NOT. ALLOCATED( w_subs ) ) THEN
	531	ALLOCATE ( w_subs(nzb:nzt+1) )
	532	w_subs = 0.0_wp
	533	ENDIF
[1299]	534
	535	!
[106]	536	!-- Arrays to store velocity data from t-dt and the phase speeds which
	537	!-- are needed for radiation boundary conditions
[3182]	538	IF ( bc_radiation_l ) THEN
[1788]	539	ALLOCATE( u_m_l(nzb:nzt+1,nysg:nyng,1:2), &
	540	v_m_l(nzb:nzt+1,nysg:nyng,0:1), &
[667]	541	w_m_l(nzb:nzt+1,nysg:nyng,0:1) )
[73]	542	ENDIF
[3182]	543	IF ( bc_radiation_r ) THEN
[1788]	544	ALLOCATE( u_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
	545	v_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx), &
[667]	546	w_m_r(nzb:nzt+1,nysg:nyng,nx-1:nx) )
[73]	547	ENDIF
[3182]	548	IF ( bc_radiation_l .OR. bc_radiation_r ) THEN
[1788]	549	ALLOCATE( c_u(nzb:nzt+1,nysg:nyng), c_v(nzb:nzt+1,nysg:nyng), &
[667]	550	c_w(nzb:nzt+1,nysg:nyng) )
[106]	551	ENDIF
[3182]	552	IF ( bc_radiation_s ) THEN
[1788]	553	ALLOCATE( u_m_s(nzb:nzt+1,0:1,nxlg:nxrg), &
	554	v_m_s(nzb:nzt+1,1:2,nxlg:nxrg), &
[667]	555	w_m_s(nzb:nzt+1,0:1,nxlg:nxrg) )
[73]	556	ENDIF
[3182]	557	IF ( bc_radiation_n ) THEN
[1788]	558	ALLOCATE( u_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
	559	v_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg), &
[667]	560	w_m_n(nzb:nzt+1,ny-1:ny,nxlg:nxrg) )
[73]	561	ENDIF
[3182]	562	IF ( bc_radiation_s .OR. bc_radiation_n ) THEN
[1788]	563	ALLOCATE( c_u(nzb:nzt+1,nxlg:nxrg), c_v(nzb:nzt+1,nxlg:nxrg), &
[667]	564	c_w(nzb:nzt+1,nxlg:nxrg) )
[106]	565	ENDIF
[3182]	566	IF ( bc_radiation_l .OR. bc_radiation_r .OR. bc_radiation_s .OR. &
	567	bc_radiation_n ) THEN
[978]	568	ALLOCATE( c_u_m_l(nzb:nzt+1), c_v_m_l(nzb:nzt+1), c_w_m_l(nzb:nzt+1) )
	569	ALLOCATE( c_u_m(nzb:nzt+1), c_v_m(nzb:nzt+1), c_w_m(nzb:nzt+1) )
	570	ENDIF
[73]	571
	572	!
[1]	573	!-- Initial assignment of the pointers
[1032]	574	IF ( .NOT. neutral ) THEN
	575	pt => pt_1; pt_p => pt_2; tpt_m => pt_3
	576	ELSE
	577	pt => pt_1; pt_p => pt_1; tpt_m => pt_3
	578	ENDIF
[1001]	579	u => u_1; u_p => u_2; tu_m => u_3
	580	v => v_1; v_p => v_2; tv_m => v_3
	581	w => w_1; w_p => w_2; tw_m => w_3
[1]	582
[1960]	583	IF ( humidity ) THEN
[1001]	584	q => q_1; q_p => q_2; tq_m => q_3
[3274]	585	vpt => vpt_1
[1001]	586	ENDIF
[1960]	587
	588	IF ( passive_scalar ) THEN
	589	s => s_1; s_p => s_2; ts_m => s_3
	590	ENDIF
[1]	591
	592	!
[2696]	593	!-- Initialize surface arrays
[2232]	594	CALL init_surface_arrays
	595	!
[3294]	596	!-- Allocate arrays for other modules
[3685]	597	CALL module_interface_init_arrays
[1551]	598
[1914]	599
[2320]	600	!
[709]	601	!-- Allocate arrays containing the RK coefficient for calculation of
	602	!-- perturbation pressure and turbulent fluxes. At this point values are
	603	!-- set for pressure calculation during initialization (where no timestep
	604	!-- is done). Further below the values needed within the timestep scheme
	605	!-- will be set.
[1788]	606	ALLOCATE( weight_substep(1:intermediate_timestep_count_max), &
[1878]	607	weight_pres(1:intermediate_timestep_count_max) )
[1340]	608	weight_substep = 1.0_wp
	609	weight_pres = 1.0_wp
[1918]	610	intermediate_timestep_count = 0 ! needed when simulated_time = 0.0
[673]	611
[3987]	612	IF ( debug_output ) CALL debug_message( 'allocating arrays', 'end' )
[1918]	613
[673]	614	!
[3014]	615	!-- Initialize time series
	616	ts_value = 0.0_wp
	617
	618	!
[1918]	619	!-- Initialize local summation arrays for routine flow_statistics.
	620	!-- This is necessary because they may not yet have been initialized when they
	621	!-- are called from flow_statistics (or - depending on the chosen model run -
	622	!-- are never initialized)
	623	sums_divnew_l = 0.0_wp
	624	sums_divold_l = 0.0_wp
	625	sums_l_l = 0.0_wp
	626	sums_wsts_bc_l = 0.0_wp
[3182]	627
[1918]	628	!
[1]	629	!-- Initialize model variables
[1788]	630	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
[328]	631	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
[1]	632	!
[2696]	633	!-- Initialization with provided input data derived from larger-scale model
	634	IF ( INDEX( initializing_actions, 'inifor' ) /= 0 ) THEN
[3987]	635	IF ( debug_output ) CALL debug_message( 'initializing with INIFOR', 'start' )
[2696]	636	!
[3051]	637	!-- Read initial 1D profiles or 3D data from NetCDF file, depending
	638	!-- on the provided level-of-detail.
[2696]	639	!-- At the moment, only u, v, w, pt and q are provided.
	640	CALL netcdf_data_input_init_3d
	641	!
[3182]	642	!-- Please note, Inifor provides data from nzb+1 to nzt.
	643	!-- Bottom and top boundary conditions for Inifor profiles are already
	644	!-- set (just after reading), so that this is not necessary here.
	645	!-- Depending on the provided level-of-detail, initial Inifor data is
	646	!-- either stored on data type (lod=1), or directly on 3D arrays (lod=2).
	647	!-- In order to obtain also initial profiles in case of lod=2 (which
	648	!-- is required for e.g. damping), average over 3D data.
	649	IF( init_3d%lod_u == 1 ) THEN
	650	u_init = init_3d%u_init
	651	ELSEIF( init_3d%lod_u == 2 ) THEN
	652	ALLOCATE( init_l(nzb:nzt+1) )
	653	DO k = nzb, nzt+1
	654	init_l(k) = SUM( u(k,nys:nyn,nxl:nxr) )
	655	ENDDO
	656	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
[1384]	657
[3182]	658	#if defined( __parallel )
	659	CALL MPI_ALLREDUCE( init_l, u_init, nzt+1-nzb+1, &
	660	MPI_REAL, MPI_SUM, comm2d, ierr )
	661	#else
	662	u_init = init_l
	663	#endif
	664	DEALLOCATE( init_l )
[3051]	665
[2696]	666	ENDIF
[3182]	667
	668	IF( init_3d%lod_v == 1 ) THEN
	669	v_init = init_3d%v_init
	670	ELSEIF( init_3d%lod_v == 2 ) THEN
	671	ALLOCATE( init_l(nzb:nzt+1) )
	672	DO k = nzb, nzt+1
	673	init_l(k) = SUM( v(k,nys:nyn,nxl:nxr) )
	674	ENDDO
	675	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
[2696]	676
[3182]	677	#if defined( __parallel )
	678	CALL MPI_ALLREDUCE( init_l, v_init, nzt+1-nzb+1, &
	679	MPI_REAL, MPI_SUM, comm2d, ierr )
	680	#else
	681	v_init = init_l
	682	#endif
	683	DEALLOCATE( init_l )
	684	ENDIF
	685	IF( .NOT. neutral ) THEN
	686	IF( init_3d%lod_pt == 1 ) THEN
	687	pt_init = init_3d%pt_init
	688	ELSEIF( init_3d%lod_pt == 2 ) THEN
	689	ALLOCATE( init_l(nzb:nzt+1) )
	690	DO k = nzb, nzt+1
	691	init_l(k) = SUM( pt(k,nys:nyn,nxl:nxr) )
	692	ENDDO
	693	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
	694
	695	#if defined( __parallel )
	696	CALL MPI_ALLREDUCE( init_l, pt_init, nzt+1-nzb+1, &
	697	MPI_REAL, MPI_SUM, comm2d, ierr )
	698	#else
	699	pt_init = init_l
	700	#endif
	701	DEALLOCATE( init_l )
	702	ENDIF
	703	ENDIF
	704
	705
	706	IF( humidity ) THEN
	707	IF( init_3d%lod_q == 1 ) THEN
	708	q_init = init_3d%q_init
	709	ELSEIF( init_3d%lod_q == 2 ) THEN
	710	ALLOCATE( init_l(nzb:nzt+1) )
	711	DO k = nzb, nzt+1
	712	init_l(k) = SUM( q(k,nys:nyn,nxl:nxr) )
	713	ENDDO
	714	init_l = init_l / REAL( ( nx + 1 ) * ( ny + 1 ), KIND = wp )
	715
	716	#if defined( __parallel )
	717	CALL MPI_ALLREDUCE( init_l, q_init, nzt+1-nzb+1, &
	718	MPI_REAL, MPI_SUM, comm2d, ierr )
	719	#else
	720	q_init = init_l
	721	#endif
	722	DEALLOCATE( init_l )
	723	ENDIF
	724	ENDIF
	725
[2696]	726	!
[4130]	727	!-- Write initial profiles onto 3D arrays.
	728	!-- Work-around, 3D initialization of u,v,w creates artificial
	729	!-- structures wich correlate with the processor grid. The reason
	730	!-- for this is still unknown. To work-around this, 3D initialization
	731	!-- will be effectively reduce to a 1D initialization where no such
	732	!-- artificial structures appear.
[2696]	733	DO i = nxlg, nxrg
	734	DO j = nysg, nyng
[4130]	735	IF( init_3d%lod_u == 1 .OR. init_3d%lod_u == 2 ) &
	736	u(:,j,i) = u_init(:)
	737	IF( init_3d%lod_v == 1 .OR. init_3d%lod_u == 2 ) &
	738	v(:,j,i) = v_init(:)
	739	IF( .NOT. neutral .AND. &
	740	( init_3d%lod_pt == 1 .OR. init_3d%lod_pt == 2 ) ) &
[3051]	741	pt(:,j,i) = pt_init(:)
[4130]	742	IF( humidity .AND. &
	743	( init_3d%lod_q == 1 .OR. init_3d%lod_q == 2 ) ) &
	744	q(:,j,i) = q_init(:)
[2696]	745	ENDDO
	746	ENDDO
	747	!
[3182]	748	!-- Set geostrophic wind components.
[2938]	749	IF ( init_3d%from_file_ug ) THEN
	750	ug(:) = init_3d%ug_init(:)
	751	ENDIF
	752	IF ( init_3d%from_file_vg ) THEN
	753	vg(:) = init_3d%vg_init(:)
	754	ENDIF
[3404]	755	!
	756	!-- Set bottom and top boundary condition for geostrophic wind
[2938]	757	ug(nzt+1) = ug(nzt)
	758	vg(nzt+1) = vg(nzt)
[3404]	759	ug(nzb) = ug(nzb+1)
	760	vg(nzb) = vg(nzb+1)
[2696]	761	!
	762	!-- Set inital w to 0
	763	w = 0.0_wp
	764
	765	IF ( passive_scalar ) THEN
	766	DO i = nxlg, nxrg
	767	DO j = nysg, nyng
	768	s(:,j,i) = s_init
	769	ENDDO
	770	ENDDO
	771	ENDIF
	772
	773	!
	774	!-- Set velocity components at non-atmospheric / oceanic grid points to
	775	!-- zero.
	776	u = MERGE( u, 0.0_wp, BTEST( wall_flags_0, 1 ) )
	777	v = MERGE( v, 0.0_wp, BTEST( wall_flags_0, 2 ) )
	778	w = MERGE( w, 0.0_wp, BTEST( wall_flags_0, 3 ) )
[2700]	779	!
	780	!-- Initialize surface variables, e.g. friction velocity, momentum
	781	!-- fluxes, etc.
	782	CALL init_surfaces
[2696]	783
[3987]	784	IF ( debug_output ) CALL debug_message( 'initializing with INIFOR', 'end' )
[2696]	785	!
	786	!-- Initialization via computed 1D-model profiles
	787	ELSEIF ( INDEX( initializing_actions, 'set_1d-model_profiles' ) /= 0 ) THEN
	788
[3987]	789	IF ( debug_output ) CALL debug_message( 'initializing with 1D model profiles', 'start' )
[1]	790	!
	791	!-- Use solutions of the 1D model as initial profiles,
	792	!-- start 1D model
	793	CALL init_1d_model
	794	!
	795	!-- Transfer initial profiles to the arrays of the 3D model
[667]	796	DO i = nxlg, nxrg
	797	DO j = nysg, nyng
[1]	798	pt(:,j,i) = pt_init
	799	u(:,j,i) = u1d
	800	v(:,j,i) = v1d
	801	ENDDO
	802	ENDDO
	803
[1960]	804	IF ( humidity ) THEN
[667]	805	DO i = nxlg, nxrg
	806	DO j = nysg, nyng
[1]	807	q(:,j,i) = q_init
	808	ENDDO
	809	ENDDO
	810	ENDIF
[2292]	811
[1960]	812	IF ( passive_scalar ) THEN
	813	DO i = nxlg, nxrg
	814	DO j = nysg, nyng
	815	s(:,j,i) = s_init
	816	ENDDO
	817	ENDDO
	818	ENDIF
[1]	819	!
	820	!-- Store initial profiles for output purposes etc.
[2696]	821	IF ( .NOT. constant_diffusion ) THEN
[1]	822	hom(:,1,25,:) = SPREAD( l1d, 2, statistic_regions+1 )
	823	ENDIF
	824	!
[2696]	825	!-- Set velocities back to zero
[2758]	826	u = MERGE( u, 0.0_wp, BTEST( wall_flags_0, 1 ) )
	827	v = MERGE( v, 0.0_wp, BTEST( wall_flags_0, 2 ) )
[1]	828	!
[2696]	829	!-- WARNING: The extra boundary conditions set after running the
	830	!-- ------- 1D model impose an error on the divergence one layer
	831	!-- below the topography; need to correct later
	832	!-- ATTENTION: Provisional correction for Piacsek & Williams
	833	!-- --------- advection scheme: keep u and v zero one layer below
	834	!-- the topography.
	835	IF ( ibc_uv_b == 1 ) THEN
[667]	836	!
[2696]	837	!-- Neumann condition
	838	DO i = nxl-1, nxr+1
	839	DO j = nys-1, nyn+1
	840	u(nzb,j,i) = u(nzb+1,j,i)
	841	v(nzb,j,i) = v(nzb+1,j,i)
[1]	842	ENDDO
[2696]	843	ENDDO
[1]	844
	845	ENDIF
[2618]	846	!
	847	!-- Initialize surface variables, e.g. friction velocity, momentum
	848	!-- fluxes, etc.
	849	CALL init_surfaces
[1]	850
[3987]	851	IF ( debug_output ) CALL debug_message( 'initializing with 1D model profiles', 'end' )
[1384]	852
[1788]	853	ELSEIF ( INDEX(initializing_actions, 'set_constant_profiles') /= 0 ) &
[1]	854	THEN
[1241]	855
[3987]	856	IF ( debug_output ) CALL debug_message( 'initializing with constant profiles', 'start' )
[2259]	857
	858	!
[1]	859	!-- Use constructed initial profiles (velocity constant with height,
	860	!-- temperature profile with 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
	870	u = MERGE( u, 0.0_wp, BTEST( wall_flags_0, 1 ) )
	871	v = MERGE( v, 0.0_wp, BTEST( wall_flags_0, 2 ) )
	872	!
[292]	873	!-- Set initial horizontal velocities at the lowest computational grid
	874	!-- levels to zero in order to avoid too small time steps caused by the
	875	!-- diffusion limit in the initial phase of a run (at k=1, dz/2 occurs
[2758]	876	!-- in the limiting formula!).
	877	!-- Please note, in case land- or urban-surface model is used and a
	878	!-- spinup is applied, masking the lowest computational level is not
	879	!-- possible as MOST as well as energy-balance parametrizations will not
	880	!-- work with zero wind velocity.
	881	IF ( ibc_uv_b /= 1 .AND. .NOT. spinup ) THEN
[1815]	882	DO i = nxlg, nxrg
	883	DO j = nysg, nyng
[2232]	884	DO k = nzb, nzt
	885	u(k,j,i) = MERGE( u(k,j,i), 0.0_wp, &
	886	BTEST( wall_flags_0(k,j,i), 20 ) )
	887	v(k,j,i) = MERGE( v(k,j,i), 0.0_wp, &
	888	BTEST( wall_flags_0(k,j,i), 21 ) )
	889	ENDDO
[1815]	890	ENDDO
	891	ENDDO
	892	ENDIF
[1]	893
[1960]	894	IF ( humidity ) THEN
[667]	895	DO i = nxlg, nxrg
	896	DO j = nysg, nyng
[1]	897	q(:,j,i) = q_init
	898	ENDDO
	899	ENDDO
	900	ENDIF
[1960]	901
	902	IF ( passive_scalar ) THEN
	903	DO i = nxlg, nxrg
	904	DO j = nysg, nyng
	905	s(:,j,i) = s_init
	906	ENDDO
	907	ENDDO
	908	ENDIF
[1]	909
[1920]	910	!
[1]	911	!-- Compute initial temperature field and other constants used in case
	912	!-- of a sloping surface
	913	IF ( sloping_surface ) CALL init_slope
[2618]	914	!
	915	!-- Initialize surface variables, e.g. friction velocity, momentum
	916	!-- fluxes, etc.
	917	CALL init_surfaces
[3579]	918
[3987]	919	IF ( debug_output ) CALL debug_message( 'initializing with constant profiles', 'end' )
[1384]	920
[1788]	921	ELSEIF ( INDEX(initializing_actions, 'by_user') /= 0 ) &
[46]	922	THEN
[1384]	923
[3987]	924	IF ( debug_output ) CALL debug_message( 'initializing by user', 'start' )
[46]	925	!
[2618]	926	!-- Pre-initialize surface variables, i.e. setting start- and end-indices
	927	!-- at each (j,i)-location. Please note, this does not supersede
	928	!-- user-defined initialization of surface quantities.
	929	CALL init_surfaces
	930	!
[46]	931	!-- Initialization will completely be done by the user
	932	CALL user_init_3d_model
	933
[3987]	934	IF ( debug_output ) CALL debug_message( 'initializing by user', 'end' )
[1384]	935
[1]	936	ENDIF
[1384]	937
[3987]	938	IF ( debug_output ) CALL debug_message( 'initializing statistics, boundary conditions, etc.', 'start' )
[1384]	939
[667]	940	!
	941	!-- Bottom boundary
	942	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN
[1340]	943	u(nzb,:,:) = 0.0_wp
	944	v(nzb,:,:) = 0.0_wp
[667]	945	ENDIF
[1]	946
	947	!
[151]	948	!-- Apply channel flow boundary condition
[132]	949	IF ( TRIM( bc_uv_t ) == 'dirichlet_0' ) THEN
[1340]	950	u(nzt+1,:,:) = 0.0_wp
	951	v(nzt+1,:,:) = 0.0_wp
[132]	952	ENDIF
	953
	954	!
[1]	955	!-- Calculate virtual potential temperature
[1960]	956	IF ( humidity ) vpt = pt * ( 1.0_wp + 0.61_wp * q )
[1]	957
	958	!
[2696]	959	!-- Store initial profiles for output purposes etc.. Please note, in case of
	960	!-- initialization of u, v, w, pt, and q via output data derived from larger
	961	!-- scale models, data will not be horizontally homogeneous. Actually, a mean
	962	!-- profile should be calculated before.
[1]	963	hom(:,1,5,:) = SPREAD( u(:,nys,nxl), 2, statistic_regions+1 )
	964	hom(:,1,6,:) = SPREAD( v(:,nys,nxl), 2, statistic_regions+1 )
[667]	965	IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2) THEN
[1340]	966	hom(nzb,1,5,:) = 0.0_wp
	967	hom(nzb,1,6,:) = 0.0_wp
[1]	968	ENDIF
	969	hom(:,1,7,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
	970
[75]	971	IF ( humidity ) THEN
[1]	972	!
	973	!-- Store initial profile of total water content, virtual potential
	974	!-- temperature
	975	hom(:,1,26,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
	976	hom(:,1,29,:) = SPREAD( vpt(:,nys,nxl), 2, statistic_regions+1 )
[2696]	977	!
[3040]	978	!-- Store initial profile of mixing ratio and potential
[2696]	979	!-- temperature
[3274]	980	IF ( bulk_cloud_model .OR. cloud_droplets ) THEN
[1]	981	hom(:,1,27,:) = SPREAD( q(:,nys,nxl), 2, statistic_regions+1 )
	982	hom(:,1,28,:) = SPREAD( pt(:,nys,nxl), 2, statistic_regions+1 )
	983	ENDIF
	984	ENDIF
	985
[2696]	986	!
	987	!-- Store initial scalar profile
[1]	988	IF ( passive_scalar ) THEN
[2513]	989	hom(:,1,121,:) = SPREAD( s(:,nys,nxl), 2, statistic_regions+1 )
[1]	990	ENDIF
	991
	992	!
[1400]	993	!-- Initialize the random number generators (from numerical recipes)
	994	CALL random_function_ini
[1429]	995
[1400]	996	IF ( random_generator == 'random-parallel' ) THEN
[3241]	997	CALL init_parallel_random_generator( nx, nys, nyn, nxl, nxr )
[1400]	998	ENDIF
	999	!
[1179]	1000	!-- Set the reference state to be used in the buoyancy terms (for ocean runs
	1001	!-- the reference state will be set (overwritten) in init_ocean)
	1002	IF ( use_single_reference_value ) THEN
[1788]	1003	IF ( .NOT. humidity ) THEN
[1179]	1004	ref_state(:) = pt_reference
	1005	ELSE
	1006	ref_state(:) = vpt_reference
	1007	ENDIF
	1008	ELSE
[1788]	1009	IF ( .NOT. humidity ) THEN
[1179]	1010	ref_state(:) = pt_init(:)
	1011	ELSE
	1012	ref_state(:) = vpt(:,nys,nxl)
	1013	ENDIF
	1014	ENDIF
[152]	1015
	1016	!
[707]	1017	!-- For the moment, vertical velocity is zero
[1340]	1018	w = 0.0_wp
[1]	1019
	1020	!
	1021	!-- Initialize array sums (must be defined in first call of pres)
[1340]	1022	sums = 0.0_wp
[1]	1023
	1024	!
[707]	1025	!-- In case of iterative solvers, p must get an initial value
[1575]	1026	IF ( psolver(1:9) == 'multigrid' .OR. psolver == 'sor' ) p = 0.0_wp
[707]	1027	!
[1]	1028	!-- Impose vortex with vertical axis on the initial velocity profile
	1029	IF ( INDEX( initializing_actions, 'initialize_vortex' ) /= 0 ) THEN
	1030	CALL init_rankine
	1031	ENDIF
	1032
	1033	!
[3035]	1034	!-- Impose temperature anomaly (advection test only) or warm air bubble
	1035	!-- close to surface
	1036	IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 .OR. &
	1037	INDEX( initializing_actions, 'initialize_bubble' ) /= 0 ) THEN
[1]	1038	CALL init_pt_anomaly
	1039	ENDIF
[3035]	1040
[1]	1041	!
	1042	!-- If required, change the surface temperature at the start of the 3D run
[1340]	1043	IF ( pt_surface_initial_change /= 0.0_wp ) THEN
[1]	1044	pt(nzb,:,:) = pt(nzb,:,:) + pt_surface_initial_change
	1045	ENDIF
	1046
	1047	!
	1048	!-- If required, change the surface humidity/scalar at the start of the 3D
	1049	!-- run
[1960]	1050	IF ( humidity .AND. q_surface_initial_change /= 0.0_wp ) &
[1]	1051	q(nzb,:,:) = q(nzb,:,:) + q_surface_initial_change
[1960]	1052
	1053	IF ( passive_scalar .AND. s_surface_initial_change /= 0.0_wp ) &
	1054	s(nzb,:,:) = s(nzb,:,:) + s_surface_initial_change
	1055
[1]	1056
	1057	!
	1058	!-- Initialize old and new time levels.
[2696]	1059	tpt_m = 0.0_wp; tu_m = 0.0_wp; tv_m = 0.0_wp; tw_m = 0.0_wp
	1060	pt_p = pt; u_p = u; v_p = v; w_p = w
[1]	1061
[1960]	1062	IF ( humidity ) THEN
[1340]	1063	tq_m = 0.0_wp
[1]	1064	q_p = q
	1065	ENDIF
[1960]	1066
	1067	IF ( passive_scalar ) THEN
	1068	ts_m = 0.0_wp
	1069	s_p = s
	1070	ENDIF
[1]	1071
[3987]	1072	IF ( debug_output ) CALL debug_message( 'initializing statistics, boundary conditions, etc.', 'end' )
[94]	1073
[1788]	1074	ELSEIF ( TRIM( initializing_actions ) == 'read_restart_data' .OR. &
[2232]	1075	TRIM( initializing_actions ) == 'cyclic_fill' ) &
[1]	1076	THEN
[1384]	1077
[3987]	1078	IF ( debug_output ) CALL debug_message( 'initializing in case of restart / cyclic_fill', 'start' )
[1]	1079	!
[3609]	1080	!-- Initialize surface elements and its attributes, e.g. heat- and
	1081	!-- momentumfluxes, roughness, scaling parameters. As number of surface
	1082	!-- elements might be different between runs, e.g. in case of cyclic fill,
	1083	!-- and not all surface elements are read, surface elements need to be
	1084	!-- initialized before.
	1085	!-- Please note, in case of cyclic fill, surfaces should be initialized
	1086	!-- after restart data is read, else, individual settings of surface
	1087	!-- parameters will be overwritten from data of precursor run, hence,
	1088	!-- init_surfaces is called a second time after reading the restart data.
	1089	CALL init_surfaces
	1090	!
[767]	1091	!-- When reading data for cyclic fill of 3D prerun data files, read
	1092	!-- some of the global variables from the restart file which are required
	1093	!-- for initializing the inflow
[328]	1094	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
[559]	1095
[759]	1096	DO i = 0, io_blocks-1
	1097	IF ( i == io_group ) THEN
[2894]	1098	CALL rrd_read_parts_of_global
[759]	1099	ENDIF
	1100	#if defined( __parallel )
	1101	CALL MPI_BARRIER( comm2d, ierr )
	1102	#endif
	1103	ENDDO
[328]	1104
[767]	1105	ENDIF
	1106
[151]	1107	!
[2894]	1108	!-- Read processor specific binary data from restart file
[767]	1109	DO i = 0, io_blocks-1
	1110	IF ( i == io_group ) THEN
[2894]	1111	CALL rrd_local
[767]	1112	ENDIF
	1113	#if defined( __parallel )
	1114	CALL MPI_BARRIER( comm2d, ierr )
	1115	#endif
	1116	ENDDO
[3608]	1117	!
[3609]	1118	!-- In case of cyclic fill, call init_surfaces a second time, so that
	1119	!-- surface properties such as heat fluxes are initialized as prescribed.
	1120	IF ( TRIM( initializing_actions ) == 'cyclic_fill' ) &
	1121	CALL init_surfaces
[767]	1122
[328]	1123	!
[2550]	1124	!-- In case of complex terrain and cyclic fill method as initialization,
	1125	!-- shift initial data in the vertical direction for each point in the
	1126	!-- x-y-plane depending on local surface height
	1127	IF ( complex_terrain .AND. &
	1128	TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
	1129	DO i = nxlg, nxrg
	1130	DO j = nysg, nyng
[4168]	1131	nz_u_shift = topo_top_ind(j,i,1)
	1132	nz_v_shift = topo_top_ind(j,i,2)
	1133	nz_w_shift = topo_top_ind(j,i,3)
	1134	nz_s_shift = topo_top_ind(j,i,0)
[2550]	1135
	1136	u(nz_u_shift:nzt+1,j,i) = u(0:nzt+1-nz_u_shift,j,i)
	1137
	1138	v(nz_v_shift:nzt+1,j,i) = v(0:nzt+1-nz_v_shift,j,i)
	1139
	1140	w(nz_w_shift:nzt+1,j,i) = w(0:nzt+1-nz_w_shift,j,i)
	1141
	1142	p(nz_s_shift:nzt+1,j,i) = p(0:nzt+1-nz_s_shift,j,i)
	1143	pt(nz_s_shift:nzt+1,j,i) = pt(0:nzt+1-nz_s_shift,j,i)
	1144	ENDDO
	1145	ENDDO
	1146	ENDIF
	1147	!
[767]	1148	!-- Initialization of the turbulence recycling method
[1788]	1149	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
[767]	1150	turbulent_inflow ) THEN
	1151	!
	1152	!-- First store the profiles to be used at the inflow.
	1153	!-- These profiles are the (temporally) and horizontally averaged vertical
	1154	!-- profiles from the prerun. Alternatively, prescribed profiles
[4185]	1155	!-- for u,v-components can be used.
	1156	!-- Overwrite u_init, v_init, pt_init, q_init and s_init with the
	1157	!-- (temporally) and horizontally averaged vertical profiles from the end
	1158	!-- of the prerun, because these profiles shall be used as the basic state
	1159	!-- for the rayleigh damping and the pt_damping.
[3288]	1160	ALLOCATE( mean_inflow_profiles(nzb:nzt+1,1:num_mean_inflow_profiles) )
[151]	1161
[767]	1162	IF ( use_prescribed_profile_data ) THEN
	1163	mean_inflow_profiles(:,1) = u_init ! u
	1164	mean_inflow_profiles(:,2) = v_init ! v
	1165	ELSE
[328]	1166	mean_inflow_profiles(:,1) = hom_sum(:,1,0) ! u
[4185]	1167	u_init(:) = hom_sum(:,1,0)
[328]	1168	mean_inflow_profiles(:,2) = hom_sum(:,2,0) ! v
[4185]	1169	v_init(:) = hom_sum(:,2,0)
[767]	1170	ENDIF
	1171	mean_inflow_profiles(:,4) = hom_sum(:,4,0) ! pt
[4185]	1172	pt_init(:) = hom_sum(:,4,0)
[1960]	1173	IF ( humidity ) &
	1174	mean_inflow_profiles(:,6) = hom_sum(:,41,0) ! q
[4185]	1175	q_init(:) = hom_sum(:,41,0)
[1960]	1176	IF ( passive_scalar ) &
	1177	mean_inflow_profiles(:,7) = hom_sum(:,115,0) ! s
[4185]	1178	s_init(:) = hom_sum(:,115,0)
[2550]	1179	!
	1180	!-- In case of complex terrain, determine vertical displacement at inflow
	1181	!-- boundary and adjust mean inflow profiles
	1182	IF ( complex_terrain ) THEN
	1183	IF ( nxlg <= 0 .AND. nxrg >= 0 .AND. nysg <= 0 .AND. nyng >= 0 ) THEN
[4168]	1184	nz_u_shift_l = topo_top_ind(j,i,1)
	1185	nz_v_shift_l = topo_top_ind(j,i,2)
	1186	nz_w_shift_l = topo_top_ind(j,i,3)
	1187	nz_s_shift_l = topo_top_ind(j,i,0)
[2550]	1188	ELSE
	1189	nz_u_shift_l = 0
	1190	nz_v_shift_l = 0
	1191	nz_w_shift_l = 0
	1192	nz_s_shift_l = 0
	1193	ENDIF
[151]	1194
[2550]	1195	#if defined( __parallel )
	1196	CALL MPI_ALLREDUCE(nz_u_shift_l, nz_u_shift, 1, MPI_INTEGER, &
	1197	MPI_MAX, comm2d, ierr)
	1198	CALL MPI_ALLREDUCE(nz_v_shift_l, nz_v_shift, 1, MPI_INTEGER, &
	1199	MPI_MAX, comm2d, ierr)
	1200	CALL MPI_ALLREDUCE(nz_w_shift_l, nz_w_shift, 1, MPI_INTEGER, &
	1201	MPI_MAX, comm2d, ierr)
	1202	CALL MPI_ALLREDUCE(nz_s_shift_l, nz_s_shift, 1, MPI_INTEGER, &
	1203	MPI_MAX, comm2d, ierr)
	1204	#else
	1205	nz_u_shift = nz_u_shift_l
	1206	nz_v_shift = nz_v_shift_l
	1207	nz_w_shift = nz_w_shift_l
	1208	nz_s_shift = nz_s_shift_l
	1209	#endif
	1210
	1211	mean_inflow_profiles(:,1) = 0.0_wp
	1212	mean_inflow_profiles(nz_u_shift:nzt+1,1) = hom_sum(0:nzt+1-nz_u_shift,1,0) ! u
	1213
	1214	mean_inflow_profiles(:,2) = 0.0_wp
	1215	mean_inflow_profiles(nz_v_shift:nzt+1,2) = hom_sum(0:nzt+1-nz_v_shift,2,0) ! v
	1216
	1217	mean_inflow_profiles(nz_s_shift:nzt+1,4) = hom_sum(0:nzt+1-nz_s_shift,4,0) ! pt
	1218
	1219	ENDIF
	1220
[151]	1221	!
[767]	1222	!-- If necessary, adjust the horizontal flow field to the prescribed
	1223	!-- profiles
	1224	IF ( use_prescribed_profile_data ) THEN
	1225	DO i = nxlg, nxrg
[667]	1226	DO j = nysg, nyng
[328]	1227	DO k = nzb, nzt+1
[767]	1228	u(k,j,i) = u(k,j,i) - hom_sum(k,1,0) + u_init(k)
	1229	v(k,j,i) = v(k,j,i) - hom_sum(k,2,0) + v_init(k)
[328]	1230	ENDDO
[151]	1231	ENDDO
[767]	1232	ENDDO
	1233	ENDIF
[151]	1234
	1235	!
[767]	1236	!-- Use these mean profiles at the inflow (provided that Dirichlet
	1237	!-- conditions are used)
[3182]	1238	IF ( bc_dirichlet_l ) THEN
[767]	1239	DO j = nysg, nyng
	1240	DO k = nzb, nzt+1
	1241	u(k,j,nxlg:-1) = mean_inflow_profiles(k,1)
	1242	v(k,j,nxlg:-1) = mean_inflow_profiles(k,2)
[1340]	1243	w(k,j,nxlg:-1) = 0.0_wp
[767]	1244	pt(k,j,nxlg:-1) = mean_inflow_profiles(k,4)
[1960]	1245	IF ( humidity ) &
[1615]	1246	q(k,j,nxlg:-1) = mean_inflow_profiles(k,6)
[1960]	1247	IF ( passive_scalar ) &
	1248	s(k,j,nxlg:-1) = mean_inflow_profiles(k,7)
[767]	1249	ENDDO
	1250	ENDDO
	1251	ENDIF
	1252
[151]	1253	!
[767]	1254	!-- Calculate the damping factors to be used at the inflow. For a
	1255	!-- turbulent inflow the turbulent fluctuations have to be limited
	1256	!-- vertically because otherwise the turbulent inflow layer will grow
	1257	!-- in time.
[1340]	1258	IF ( inflow_damping_height == 9999999.9_wp ) THEN
[767]	1259	!
	1260	!-- Default: use the inversion height calculated by the prerun; if
	1261	!-- this is zero, inflow_damping_height must be explicitly
	1262	!-- specified.
[1340]	1263	IF ( hom_sum(nzb+6,pr_palm,0) /= 0.0_wp ) THEN
[767]	1264	inflow_damping_height = hom_sum(nzb+6,pr_palm,0)
	1265	ELSE
[1788]	1266	WRITE( message_string, * ) 'inflow_damping_height must be ', &
	1267	'explicitly specified because&the inversion height ', &
[767]	1268	'calculated by the prerun is zero.'
	1269	CALL message( 'init_3d_model', 'PA0318', 1, 2, 0, 6, 0 )
[292]	1270	ENDIF
[151]	1271
[767]	1272	ENDIF
	1273
[1340]	1274	IF ( inflow_damping_width == 9999999.9_wp ) THEN
[151]	1275	!
[767]	1276	!-- Default for the transition range: one tenth of the undamped
	1277	!-- layer
[1340]	1278	inflow_damping_width = 0.1_wp * inflow_damping_height
[151]	1279
[767]	1280	ENDIF
[151]	1281
[767]	1282	ALLOCATE( inflow_damping_factor(nzb:nzt+1) )
[151]	1283
[767]	1284	DO k = nzb, nzt+1
[151]	1285
[767]	1286	IF ( zu(k) <= inflow_damping_height ) THEN
[1340]	1287	inflow_damping_factor(k) = 1.0_wp
[996]	1288	ELSEIF ( zu(k) <= ( inflow_damping_height + inflow_damping_width ) ) THEN
[1340]	1289	inflow_damping_factor(k) = 1.0_wp - &
[996]	1290	( zu(k) - inflow_damping_height ) / &
	1291	inflow_damping_width
[767]	1292	ELSE
[1340]	1293	inflow_damping_factor(k) = 0.0_wp
[767]	1294	ENDIF
[151]	1295
[767]	1296	ENDDO
[151]	1297
[147]	1298	ENDIF
	1299
[152]	1300	!
[2696]	1301	!-- Inside buildings set velocities back to zero
[1788]	1302	IF ( TRIM( initializing_actions ) == 'cyclic_fill' .AND. &
[359]	1303	topography /= 'flat' ) THEN
	1304	!
[2696]	1305	!-- Inside buildings set velocities back to zero.
	1306	!-- Other scalars (pt, q, s, p, sa, ...) are ignored at present,
[359]	1307	!-- maybe revise later.
[1001]	1308	DO i = nxlg, nxrg
	1309	DO j = nysg, nyng
[2232]	1310	DO k = nzb, nzt
	1311	u(k,j,i) = MERGE( u(k,j,i), 0.0_wp, &
	1312	BTEST( wall_flags_0(k,j,i), 1 ) )
	1313	v(k,j,i) = MERGE( v(k,j,i), 0.0_wp, &
	1314	BTEST( wall_flags_0(k,j,i), 2 ) )
	1315	w(k,j,i) = MERGE( w(k,j,i), 0.0_wp, &
	1316	BTEST( wall_flags_0(k,j,i), 3 ) )
	1317	ENDDO
[359]	1318	ENDDO
[1001]	1319	ENDDO
[359]	1320
	1321	ENDIF
	1322
	1323	!
[1]	1324	!-- Calculate initial temperature field and other constants used in case
	1325	!-- of a sloping surface
	1326	IF ( sloping_surface ) CALL init_slope
	1327
	1328	!
	1329	!-- Initialize new time levels (only done in order to set boundary values
	1330	!-- including ghost points)
[2696]	1331	pt_p = pt; u_p = u; v_p = v; w_p = w
[1960]	1332	IF ( humidity ) THEN
[1053]	1333	q_p = q
	1334	ENDIF
[1960]	1335	IF ( passive_scalar ) s_p = s
[181]	1336	!
	1337	!-- Allthough tendency arrays are set in prognostic_equations, they have
	1338	!-- have to be predefined here because they are used (but multiplied with 0)
	1339	!-- there before they are set.
[2696]	1340	tpt_m = 0.0_wp; tu_m = 0.0_wp; tv_m = 0.0_wp; tw_m = 0.0_wp
[1960]	1341	IF ( humidity ) THEN
[1340]	1342	tq_m = 0.0_wp
[1053]	1343	ENDIF
[1960]	1344	IF ( passive_scalar ) ts_m = 0.0_wp
[181]	1345
[3987]	1346	IF ( debug_output ) CALL debug_message( 'initializing in case of restart / cyclic_fill', 'end' )
[1384]	1347
[1]	1348	ELSE
	1349	!
	1350	!-- Actually this part of the programm should not be reached
[254]	1351	message_string = 'unknown initializing problem'
	1352	CALL message( 'init_3d_model', 'PA0193', 1, 2, 0, 6, 0 )
[1]	1353	ENDIF
	1354
[151]	1355
	1356	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
[1]	1357	!
[151]	1358	!-- Initialize old timelevels needed for radiation boundary conditions
[3182]	1359	IF ( bc_radiation_l ) THEN
[151]	1360	u_m_l(:,:,:) = u(:,:,1:2)
	1361	v_m_l(:,:,:) = v(:,:,0:1)
	1362	w_m_l(:,:,:) = w(:,:,0:1)
	1363	ENDIF
[3182]	1364	IF ( bc_radiation_r ) THEN
[151]	1365	u_m_r(:,:,:) = u(:,:,nx-1:nx)
	1366	v_m_r(:,:,:) = v(:,:,nx-1:nx)
	1367	w_m_r(:,:,:) = w(:,:,nx-1:nx)
	1368	ENDIF
[3182]	1369	IF ( bc_radiation_s ) THEN
[151]	1370	u_m_s(:,:,:) = u(:,0:1,:)
	1371	v_m_s(:,:,:) = v(:,1:2,:)
	1372	w_m_s(:,:,:) = w(:,0:1,:)
	1373	ENDIF
[3182]	1374	IF ( bc_radiation_n ) THEN
[151]	1375	u_m_n(:,:,:) = u(:,ny-1:ny,:)
	1376	v_m_n(:,:,:) = v(:,ny-1:ny,:)
	1377	w_m_n(:,:,:) = w(:,ny-1:ny,:)
	1378	ENDIF
[667]	1379
[151]	1380	ENDIF
[680]	1381
[667]	1382	!
	1383	!-- Calculate the initial volume flow at the right and north boundary
[709]	1384	IF ( conserve_volume_flow ) THEN
[151]	1385
[767]	1386	IF ( use_prescribed_profile_data ) THEN
[667]	1387
[1340]	1388	volume_flow_initial_l = 0.0_wp
	1389	volume_flow_area_l = 0.0_wp
[732]	1390
[667]	1391	IF ( nxr == nx ) THEN
	1392	DO j = nys, nyn
[2232]	1393	DO k = nzb+1, nzt
[1788]	1394	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
[2232]	1395	u_init(k) * dzw(k) &
	1396	* MERGE( 1.0_wp, 0.0_wp, &
	1397	BTEST( wall_flags_0(k,j,nxr), 1 )&
	1398	)
	1399
	1400	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
	1401	* MERGE( 1.0_wp, 0.0_wp, &
	1402	BTEST( wall_flags_0(k,j,nxr), 1 )&
	1403	)
[767]	1404	ENDDO
	1405	ENDDO
	1406	ENDIF
	1407
	1408	IF ( nyn == ny ) THEN
	1409	DO i = nxl, nxr
[2232]	1410	DO k = nzb+1, nzt
	1411	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
	1412	v_init(k) * dzw(k) &
	1413	* MERGE( 1.0_wp, 0.0_wp, &
	1414	BTEST( wall_flags_0(k,nyn,i), 2 )&
	1415	)
	1416	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
	1417	* MERGE( 1.0_wp, 0.0_wp, &
	1418	BTEST( wall_flags_0(k,nyn,i), 2 )&
	1419	)
[767]	1420	ENDDO
	1421	ENDDO
	1422	ENDIF
	1423
	1424	#if defined( __parallel )
	1425	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
	1426	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	1427	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
	1428	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	1429
	1430	#else
	1431	volume_flow_initial = volume_flow_initial_l
	1432	volume_flow_area = volume_flow_area_l
	1433	#endif
	1434
	1435	ELSEIF ( TRIM( initializing_actions ) == 'cyclic_fill' ) THEN
	1436
[1340]	1437	volume_flow_initial_l = 0.0_wp
	1438	volume_flow_area_l = 0.0_wp
[767]	1439
	1440	IF ( nxr == nx ) THEN
	1441	DO j = nys, nyn
[2232]	1442	DO k = nzb+1, nzt
[1788]	1443	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
[2232]	1444	hom_sum(k,1,0) * dzw(k) &
	1445	* MERGE( 1.0_wp, 0.0_wp, &
	1446	BTEST( wall_flags_0(k,j,nx), 1 ) &
	1447	)
	1448	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
	1449	* MERGE( 1.0_wp, 0.0_wp, &
	1450	BTEST( wall_flags_0(k,j,nx), 1 ) &
	1451	)
[667]	1452	ENDDO
	1453	ENDDO
	1454	ENDIF
	1455
	1456	IF ( nyn == ny ) THEN
	1457	DO i = nxl, nxr
[2232]	1458	DO k = nzb+1, nzt
[1788]	1459	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
[2232]	1460	hom_sum(k,2,0) * dzw(k) &
	1461	* MERGE( 1.0_wp, 0.0_wp, &
	1462	BTEST( wall_flags_0(k,ny,i), 2 ) &
	1463	)
	1464	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
	1465	* MERGE( 1.0_wp, 0.0_wp, &
	1466	BTEST( wall_flags_0(k,ny,i), 2 ) &
	1467	)
[667]	1468	ENDDO
	1469	ENDDO
	1470	ENDIF
	1471
[732]	1472	#if defined( __parallel )
	1473	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
	1474	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	1475	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
	1476	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	1477
	1478	#else
	1479	volume_flow_initial = volume_flow_initial_l
	1480	volume_flow_area = volume_flow_area_l
	1481	#endif
	1482
[667]	1483	ELSEIF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
	1484
[1340]	1485	volume_flow_initial_l = 0.0_wp
	1486	volume_flow_area_l = 0.0_wp
[732]	1487
[667]	1488	IF ( nxr == nx ) THEN
	1489	DO j = nys, nyn
[2232]	1490	DO k = nzb+1, nzt
	1491	volume_flow_initial_l(1) = volume_flow_initial_l(1) + &
	1492	u(k,j,nx) * dzw(k) &
	1493	* MERGE( 1.0_wp, 0.0_wp, &
	1494	BTEST( wall_flags_0(k,j,nx), 1 ) &
	1495	)
	1496	volume_flow_area_l(1) = volume_flow_area_l(1) + dzw(k) &
	1497	* MERGE( 1.0_wp, 0.0_wp, &
	1498	BTEST( wall_flags_0(k,j,nx), 1 ) &
	1499	)
[667]	1500	ENDDO
	1501	ENDDO
	1502	ENDIF
	1503
	1504	IF ( nyn == ny ) THEN
	1505	DO i = nxl, nxr
[2232]	1506	DO k = nzb+1, nzt
[1788]	1507	volume_flow_initial_l(2) = volume_flow_initial_l(2) + &
[2232]	1508	v(k,ny,i) * dzw(k) &
	1509	* MERGE( 1.0_wp, 0.0_wp, &
	1510	BTEST( wall_flags_0(k,ny,i), 2 ) &
	1511	)
	1512	volume_flow_area_l(2) = volume_flow_area_l(2) + dzw(k) &
	1513	* MERGE( 1.0_wp, 0.0_wp, &
	1514	BTEST( wall_flags_0(k,ny,i), 2 ) &
	1515	)
[667]	1516	ENDDO
	1517	ENDDO
	1518	ENDIF
	1519
	1520	#if defined( __parallel )
[732]	1521	CALL MPI_ALLREDUCE( volume_flow_initial_l(1), volume_flow_initial(1),&
	1522	2, MPI_REAL, MPI_SUM, comm2d, ierr )
	1523	CALL MPI_ALLREDUCE( volume_flow_area_l(1), volume_flow_area(1), &
	1524	2, MPI_REAL, MPI_SUM, comm2d, ierr )
[667]	1525
	1526	#else
[732]	1527	volume_flow_initial = volume_flow_initial_l
	1528	volume_flow_area = volume_flow_area_l
[667]	1529	#endif
	1530
[732]	1531	ENDIF
	1532
[151]	1533	!
[709]	1534	!-- In case of 'bulk_velocity' mode, volume_flow_initial is calculated
	1535	!-- from u\|v_bulk instead
[680]	1536	IF ( TRIM( conserve_volume_flow_mode ) == 'bulk_velocity' ) THEN
	1537	volume_flow_initial(1) = u_bulk * volume_flow_area(1)
	1538	volume_flow_initial(2) = v_bulk * volume_flow_area(2)
	1539	ENDIF
[667]	1540
[680]	1541	ENDIF
[2232]	1542	!
[4150]	1543	!-- In the following, surface properties can be further initialized with
	1544	!-- input from static driver file.
	1545	!-- At the moment this affects only default surfaces. For example,
	1546	!-- roughness length or sensible / latent heat fluxes can be initialized
	1547	!-- heterogeneously for default surfaces. Therefore, a generic routine
	1548	!-- from netcdf_data_input_mod is called to read a 2D array.
	1549	IF ( input_pids_static ) THEN
	1550	!
[4151]	1551	!-- Allocate memory for possible static input
	1552	ALLOCATE( tmp_2d%var(nys:nyn,nxl:nxr) )
	1553	tmp_2d%var = 0.0_wp
	1554	!
[4150]	1555	!-- Open the static input file
[4151]	1556	#if defined( __netcdf )
[4150]	1557	CALL open_read_file( TRIM( input_file_static ) // &
	1558	TRIM( coupling_char ), &
[4186]	1559	pids_id )
[4150]	1560
[4186]	1561	CALL inquire_num_variables( pids_id, num_var_pids )
[4150]	1562	!
	1563	!-- Allocate memory to store variable names and read them
[4186]	1564	ALLOCATE( vars_pids(1:num_var_pids) )
	1565	CALL inquire_variable_names( pids_id, vars_pids )
[4150]	1566	!
	1567	!-- Input roughness length.
[4186]	1568	IF ( check_existence( vars_pids, 'z0' ) ) THEN
[4150]	1569	!
	1570	!-- Read _FillValue attribute
[4186]	1571	CALL get_attribute( pids_id, char_fill, tmp_2d%fill, &
[4150]	1572	.FALSE., 'z0' )
	1573	!
	1574	!-- Read variable
[4186]	1575	CALL get_variable( pids_id, 'z0', tmp_2d%var, &
[4150]	1576	nxl, nxr, nys, nyn )
	1577	!
	1578	!-- Initialize roughness length. Note, z0 will be only initialized at
	1579	!-- default-type surfaces. At natural or urban z0 is implicitly
	1580	!-- initialized bythe respective parameter lists.
	1581	!-- Initialize horizontal surface elements.
	1582	CALL init_single_surface_properties( surf_def_h(0)%z0, &
	1583	tmp_2d%var, &
	1584	surf_def_h(0)%ns, &
	1585	tmp_2d%fill, &
	1586	surf_def_h(0)%i, &
	1587	surf_def_h(0)%j )
	1588	!
	1589	!-- Initialize roughness also at vertical surface elements.
	1590	!-- Note, the actual 2D input arrays are only defined on the
	1591	!-- subdomain. Therefore, pass the index arrays with their respective
	1592	!-- offset values.
	1593	DO l = 0, 3
	1594	CALL init_single_surface_properties( &
	1595	surf_def_v(l)%z0, &
	1596	tmp_2d%var, &
	1597	surf_def_v(l)%ns, &
	1598	tmp_2d%fill, &
	1599	surf_def_v(l)%i + surf_def_v(l)%ioff, &
	1600	surf_def_v(l)%j + surf_def_v(l)%joff )
	1601	ENDDO
	1602
	1603	ENDIF
	1604	!
	1605	!-- Additional variables, e.g. shf, qsws, etc, can be initialized the
	1606	!-- same way.
	1607
	1608	!
[4187]	1609	!-- Finally, close the input file and deallocate temporary arrays
	1610	DEALLOCATE( vars_pids )
	1611
[4186]	1612	CALL close_input_file( pids_id )
[4151]	1613	#endif
	1614	DEALLOCATE( tmp_2d%var )
[4150]	1615	ENDIF
	1616	!
[2618]	1617	!-- Finally, if random_heatflux is set, disturb shf at horizontal
	1618	!-- surfaces. Actually, this should be done in surface_mod, where all other
	1619	!-- initializations of surface quantities are done. However, this
	1620	!-- would create a ring dependency, hence, it is done here. Maybe delete
	1621	!-- disturb_heatflux and tranfer the respective code directly into the
	1622	!-- initialization in surface_mod.
[2232]	1623	IF ( TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
	1624	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
[2618]	1625
[2232]	1626	IF ( use_surface_fluxes .AND. constant_heatflux .AND. &
	1627	random_heatflux ) THEN
	1628	IF ( surf_def_h(0)%ns >= 1 ) CALL disturb_heatflux( surf_def_h(0) )
	1629	IF ( surf_lsm_h%ns >= 1 ) CALL disturb_heatflux( surf_lsm_h )
	1630	IF ( surf_usm_h%ns >= 1 ) CALL disturb_heatflux( surf_usm_h )
	1631	ENDIF
	1632	ENDIF
[680]	1633
[787]	1634	!
[3747]	1635	!-- Compute total sum of grid points and the mean surface level height for each
	1636	!-- statistic region. These are mainly used for horizontal averaging of
	1637	!-- turbulence statistics.
[2696]	1638	!-- ngp_2dh: number of grid points of a horizontal cross section through the
[3747]	1639	!-- respective statistic region
	1640	!-- ngp_3d: number of grid points of the respective statistic region
[2696]	1641	ngp_2dh_outer_l = 0
	1642	ngp_2dh_outer = 0
	1643	ngp_2dh_s_inner_l = 0
	1644	ngp_2dh_s_inner = 0
	1645	ngp_2dh_l = 0
	1646	ngp_2dh = 0
	1647	ngp_3d_inner_l = 0.0_wp
	1648	ngp_3d_inner = 0
	1649	ngp_3d = 0
	1650	ngp_sums = ( nz + 2 ) * ( pr_palm + max_pr_user )
	1651
	1652	mean_surface_level_height = 0.0_wp
	1653	mean_surface_level_height_l = 0.0_wp
	1654	!
	1655	!-- To do: New concept for these non-topography grid points!
	1656	DO sr = 0, statistic_regions
	1657	DO i = nxl, nxr
	1658	DO j = nys, nyn
	1659	IF ( rmask(j,i,sr) == 1.0_wp ) THEN
	1660	!
	1661	!-- All xy-grid points
	1662	ngp_2dh_l(sr) = ngp_2dh_l(sr) + 1
	1663	!
	1664	!-- Determine mean surface-level height. In case of downward-
	1665	!-- facing walls are present, more than one surface level exist.
	1666	!-- In this case, use the lowest surface-level height.
	1667	IF ( surf_def_h(0)%start_index(j,i) <= &
	1668	surf_def_h(0)%end_index(j,i) ) THEN
	1669	m = surf_def_h(0)%start_index(j,i)
	1670	k = surf_def_h(0)%k(m)
	1671	mean_surface_level_height_l(sr) = &
	1672	mean_surface_level_height_l(sr) + zw(k-1)
	1673	ENDIF
	1674	IF ( surf_lsm_h%start_index(j,i) <= &
	1675	surf_lsm_h%end_index(j,i) ) THEN
	1676	m = surf_lsm_h%start_index(j,i)
	1677	k = surf_lsm_h%k(m)
	1678	mean_surface_level_height_l(sr) = &
	1679	mean_surface_level_height_l(sr) + zw(k-1)
	1680	ENDIF
	1681	IF ( surf_usm_h%start_index(j,i) <= &
	1682	surf_usm_h%end_index(j,i) ) THEN
	1683	m = surf_usm_h%start_index(j,i)
	1684	k = surf_usm_h%k(m)
	1685	mean_surface_level_height_l(sr) = &
	1686	mean_surface_level_height_l(sr) + zw(k-1)
	1687	ENDIF
	1688
	1689	k_surf = k - 1
	1690
	1691	DO k = nzb, nzt+1
	1692	!
	1693	!-- xy-grid points above topography
	1694	ngp_2dh_outer_l(k,sr) = ngp_2dh_outer_l(k,sr) + &
	1695	MERGE( 1, 0, BTEST( wall_flags_0(k,j,i), 24 ) )
	1696
	1697	ngp_2dh_s_inner_l(k,sr) = ngp_2dh_s_inner_l(k,sr) + &
	1698	MERGE( 1, 0, BTEST( wall_flags_0(k,j,i), 22 ) )
	1699
	1700	ENDDO
	1701	!
	1702	!-- All grid points of the total domain above topography
	1703	ngp_3d_inner_l(sr) = ngp_3d_inner_l(sr) + ( nz - k_surf + 2 )
	1704
	1705
	1706
	1707	ENDIF
	1708	ENDDO
	1709	ENDDO
	1710	ENDDO
[3747]	1711
[2696]	1712	sr = statistic_regions + 1
	1713	#if defined( __parallel )
	1714	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
	1715	CALL MPI_ALLREDUCE( ngp_2dh_l(0), ngp_2dh(0), sr, MPI_INTEGER, MPI_SUM, &
	1716	comm2d, ierr )
	1717	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
	1718	CALL MPI_ALLREDUCE( ngp_2dh_outer_l(0,0), ngp_2dh_outer(0,0), (nz+2)*sr, &
	1719	MPI_INTEGER, MPI_SUM, comm2d, ierr )
	1720	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
	1721	CALL MPI_ALLREDUCE( ngp_2dh_s_inner_l(0,0), ngp_2dh_s_inner(0,0), &
	1722	(nz+2)*sr, MPI_INTEGER, MPI_SUM, comm2d, ierr )
	1723	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
	1724	CALL MPI_ALLREDUCE( ngp_3d_inner_l(0), ngp_3d_inner_tmp(0), sr, MPI_REAL, &
	1725	MPI_SUM, comm2d, ierr )
	1726	ngp_3d_inner = INT( ngp_3d_inner_tmp, KIND = SELECTED_INT_KIND( 18 ) )
	1727	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
	1728	CALL MPI_ALLREDUCE( mean_surface_level_height_l(0), &
	1729	mean_surface_level_height(0), sr, MPI_REAL, &
	1730	MPI_SUM, comm2d, ierr )
	1731	mean_surface_level_height = mean_surface_level_height / REAL( ngp_2dh )
	1732	#else
	1733	ngp_2dh = ngp_2dh_l
	1734	ngp_2dh_outer = ngp_2dh_outer_l
	1735	ngp_2dh_s_inner = ngp_2dh_s_inner_l
	1736	ngp_3d_inner = INT( ngp_3d_inner_l, KIND = SELECTED_INT_KIND( 18 ) )
	1737	mean_surface_level_height = mean_surface_level_height_l / REAL( ngp_2dh_l )
	1738	#endif
	1739
	1740	ngp_3d = INT ( ngp_2dh, KIND = SELECTED_INT_KIND( 18 ) ) * &
	1741	INT ( (nz + 2 ), KIND = SELECTED_INT_KIND( 18 ) )
	1742
	1743	!
	1744	!-- Set a lower limit of 1 in order to avoid zero divisions in flow_statistics,
	1745	!-- buoyancy, etc. A zero value will occur for cases where all grid points of
	1746	!-- the respective subdomain lie below the surface topography
	1747	ngp_2dh_outer = MAX( 1, ngp_2dh_outer(:,:) )
	1748	ngp_3d_inner = MAX( INT(1, KIND = SELECTED_INT_KIND( 18 )), &
	1749	ngp_3d_inner(:) )
	1750	ngp_2dh_s_inner = MAX( 1, ngp_2dh_s_inner(:,:) )
	1751
	1752	DEALLOCATE( mean_surface_level_height_l, ngp_2dh_l, ngp_2dh_outer_l, &
	1753	ngp_3d_inner_l, ngp_3d_inner_tmp )
	1754	!
[2232]	1755	!-- Initialize surface forcing corresponding to large-scale forcing. Therein,
	1756	!-- initialize heat-fluxes, etc. via datatype. Revise it later!
	1757	IF ( large_scale_forcing .AND. lsf_surf ) THEN
	1758	IF ( use_surface_fluxes .AND. constant_heatflux ) THEN
	1759	CALL ls_forcing_surf ( simulated_time )
	1760	ENDIF
	1761	ENDIF
	1762	!
[3347]	1763	!-- Initializae 3D offline nesting in COSMO model and read data from
	1764	!-- external NetCDF file.
	1765	IF ( nesting_offline ) CALL nesting_offl_init
	1766	!
[787]	1767	!-- Initialize quantities for special advections schemes
	1768	CALL init_advec
[680]	1769
[667]	1770	!
[680]	1771	!-- Impose random perturbation on the horizontal velocity field and then
	1772	!-- remove the divergences from the velocity field at the initial stage
[1788]	1773	IF ( create_disturbances .AND. disturbance_energy_limit /= 0.0_wp .AND. &
	1774	TRIM( initializing_actions ) /= 'read_restart_data' .AND. &
[680]	1775	TRIM( initializing_actions ) /= 'cyclic_fill' ) THEN
	1776
[3987]	1777	IF ( debug_output ) CALL debug_message( 'creating disturbances + applying pressure solver', 'start' )
[3849]	1778	!
	1779	!-- Needed for both disturb_field and pres
	1780	!$ACC DATA &
	1781	!$ACC CREATE(tend(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1782	!$ACC COPY(u(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1783	!$ACC COPY(v(nzb:nzt+1,nysg:nyng,nxlg:nxrg))
	1784
[2232]	1785	CALL disturb_field( 'u', tend, u )
	1786	CALL disturb_field( 'v', tend, v )
[1384]	1787
[3849]	1788	!$ACC DATA &
	1789	!$ACC CREATE(d(nzb+1:nzt,nys:nyn,nxl:nxr)) &
	1790	!$ACC COPY(w(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1791	!$ACC COPY(p(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1792	!$ACC COPYIN(rho_air(nzb:nzt+1), rho_air_zw(nzb:nzt+1)) &
	1793	!$ACC COPYIN(ddzu(1:nzt+1), ddzw(1:nzt+1)) &
	1794	!$ACC COPYIN(wall_flags_0(nzb:nzt+1,nysg:nyng,nxlg:nxrg)) &
	1795	!$ACC COPYIN(bc_h(0:1)) &
	1796	!$ACC COPYIN(bc_h(0)%i(1:bc_h(0)%ns)) &
	1797	!$ACC COPYIN(bc_h(0)%j(1:bc_h(0)%ns)) &
	1798	!$ACC COPYIN(bc_h(0)%k(1:bc_h(0)%ns)) &
	1799	!$ACC COPYIN(bc_h(1)%i(1:bc_h(1)%ns)) &
	1800	!$ACC COPYIN(bc_h(1)%j(1:bc_h(1)%ns)) &
	1801	!$ACC COPYIN(bc_h(1)%k(1:bc_h(1)%ns))
	1802
[680]	1803	n_sor = nsor_ini
	1804	CALL pres
	1805	n_sor = nsor
[1384]	1806
[3849]	1807	!$ACC END DATA
	1808	!$ACC END DATA
	1809
[3987]	1810	IF ( debug_output ) CALL debug_message( 'creating disturbances + applying pressure solver', 'end' )
	1811
[680]	1812	ENDIF
	1813
[3294]	1814	IF ( .NOT. ocean_mode ) THEN
[3274]	1815
	1816	ALLOCATE( hyp(nzb:nzt+1) )
	1817	ALLOCATE( d_exner(nzb:nzt+1) )
	1818	ALLOCATE( exner(nzb:nzt+1) )
	1819	ALLOCATE( hyrho(nzb:nzt+1) )
[1849]	1820	!
[3274]	1821	!-- Check temperature in case of too large domain height
	1822	DO k = nzb, nzt+1
	1823	IF ( ( pt_surface * exner_function(surface_pressure * 100.0_wp) - g/c_p * zu(k) ) < 0.0_wp ) THEN
	1824	WRITE( message_string, * ) 'absolute temperature < 0.0 at zu(', k, &
	1825	') = ', zu(k)
[3685]	1826	CALL message( 'init_3d_model', 'PA0142', 1, 2, 0, 6, 0 )
[3274]	1827	ENDIF
	1828	ENDDO
	1829
	1830	!
	1831	!-- Calculate vertical profile of the hydrostatic pressure (hyp)
	1832	hyp = barometric_formula(zu, pt_surface * exner_function(surface_pressure * 100.0_wp), 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)
	1836	!
	1837	!-- Compute reference density
	1838	rho_surface = ideal_gas_law_rho(surface_pressure * 100.0_wp, pt_surface * exner_function(surface_pressure * 100.0_wp))
	1839
[96]	1840	ENDIF
[1]	1841
	1842	!
	1843	!-- If required, initialize particles
[3159]	1844	IF ( agents_active ) CALL mas_init
	1845	!
[3937]	1846	!-- Initialization of synthetic turbulence generator
	1847	IF ( use_syn_turb_gen ) CALL stg_init
[2696]	1848	!
[3685]	1849	!-- Initializing actions for all other modules
	1850	CALL module_interface_init
[2696]	1851	!
[3685]	1852	!-- Initialize surface layer (done after LSM as roughness length are required
	1853	!-- for initialization
	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	!
[673]	1859	!-- Initialize the ws-scheme.
[3448]	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	!
[709]	1866	!-- Setting weighting factors for calculation of perturbation pressure
[1762]	1867	!-- and turbulent quantities from the RK substeps
[709]	1868	IF ( TRIM(timestep_scheme) == 'runge-kutta-3' ) THEN ! for RK3-method
	1869
[1322]	1870	weight_substep(1) = 1._wp/6._wp
	1871	weight_substep(2) = 3._wp/10._wp
	1872	weight_substep(3) = 8._wp/15._wp
[709]	1873
[1322]	1874	weight_pres(1) = 1._wp/3._wp
	1875	weight_pres(2) = 5._wp/12._wp
	1876	weight_pres(3) = 1._wp/4._wp
[709]	1877
	1878	ELSEIF ( TRIM(timestep_scheme) == 'runge-kutta-2' ) THEN ! for RK2-method
	1879
[1322]	1880	weight_substep(1) = 1._wp/2._wp
	1881	weight_substep(2) = 1._wp/2._wp
[673]	1882
[1322]	1883	weight_pres(1) = 1._wp/2._wp
	1884	weight_pres(2) = 1._wp/2._wp
[709]	1885
[1001]	1886	ELSE ! for Euler-method
[709]	1887
[1340]	1888	weight_substep(1) = 1.0_wp
	1889	weight_pres(1) = 1.0_wp
[709]	1890
[673]	1891	ENDIF
	1892
	1893	!
[1]	1894	!-- Initialize Rayleigh damping factors
[1340]	1895	rdf = 0.0_wp
	1896	rdf_sc = 0.0_wp
	1897	IF ( rayleigh_damping_factor /= 0.0_wp ) THEN
[3294]	1898
	1899	IF ( .NOT. ocean_mode ) THEN
[108]	1900	DO k = nzb+1, nzt
	1901	IF ( zu(k) >= rayleigh_damping_height ) THEN
[1788]	1902	rdf(k) = rayleigh_damping_factor * &
[1340]	1903	( SIN( pi * 0.5_wp * ( zu(k) - rayleigh_damping_height ) &
[1788]	1904	/ ( zu(nzt) - rayleigh_damping_height ) ) &
[1]	1905	)**2
[108]	1906	ENDIF
	1907	ENDDO
	1908	ELSE
[3294]	1909	!
	1910	!-- In ocean mode, rayleigh damping is applied in the lower part of the
	1911	!-- model domain
[108]	1912	DO k = nzt, nzb+1, -1
	1913	IF ( zu(k) <= rayleigh_damping_height ) THEN
[1788]	1914	rdf(k) = rayleigh_damping_factor * &
[1340]	1915	( SIN( pi * 0.5_wp * ( rayleigh_damping_height - zu(k) ) &
[1788]	1916	/ ( rayleigh_damping_height - zu(nzb+1) ) ) &
[108]	1917	)**2
	1918	ENDIF
	1919	ENDDO
	1920	ENDIF
[3294]	1921
[1]	1922	ENDIF
[785]	1923	IF ( scalar_rayleigh_damping ) rdf_sc = rdf
[1]	1924
	1925	!
[240]	1926	!-- Initialize the starting level and the vertical smoothing factor used for
	1927	!-- the external pressure gradient
[1340]	1928	dp_smooth_factor = 1.0_wp
[240]	1929	IF ( dp_external ) THEN
	1930	!
	1931	!-- Set the starting level dp_level_ind_b only if it has not been set before
	1932	!-- (e.g. in init_grid).
	1933	IF ( dp_level_ind_b == 0 ) THEN
	1934	ind_array = MINLOC( ABS( dp_level_b - zu ) )
	1935	dp_level_ind_b = ind_array(1) - 1 + nzb
	1936	! MINLOC uses lower array bound 1
	1937	ENDIF
	1938	IF ( dp_smooth ) THEN
[1340]	1939	dp_smooth_factor(:dp_level_ind_b) = 0.0_wp
[240]	1940	DO k = dp_level_ind_b+1, nzt
[1340]	1941	dp_smooth_factor(k) = 0.5_wp * ( 1.0_wp + SIN( pi * &
	1942	( REAL( k - dp_level_ind_b, KIND=wp ) / &
	1943	REAL( nzt - dp_level_ind_b, KIND=wp ) - 0.5_wp ) ) )
[240]	1944	ENDDO
	1945	ENDIF
	1946	ENDIF
	1947
	1948	!
[978]	1949	!-- Initialize damping zone for the potential temperature in case of
	1950	!-- non-cyclic lateral boundaries. The damping zone has the maximum value
	1951	!-- at the inflow boundary and decreases to zero at pt_damping_width.
[1340]	1952	ptdf_x = 0.0_wp
	1953	ptdf_y = 0.0_wp
[1159]	1954	IF ( bc_lr_dirrad ) THEN
[996]	1955	DO i = nxl, nxr
[978]	1956	IF ( ( i * dx ) < pt_damping_width ) THEN
[1340]	1957	ptdf_x(i) = pt_damping_factor * ( SIN( pi * 0.5_wp * &
	1958	REAL( pt_damping_width - i * dx, KIND=wp ) / ( &
[1788]	1959	REAL( pt_damping_width, KIND=wp ) ) ) )**2
[73]	1960	ENDIF
	1961	ENDDO
[1159]	1962	ELSEIF ( bc_lr_raddir ) THEN
[996]	1963	DO i = nxl, nxr
[978]	1964	IF ( ( i * dx ) > ( nx * dx - pt_damping_width ) ) THEN
[1322]	1965	ptdf_x(i) = pt_damping_factor * &
[1340]	1966	SIN( pi * 0.5_wp * &
	1967	( ( i - nx ) * dx + pt_damping_width ) / &
	1968	REAL( pt_damping_width, KIND=wp ) )**2
[73]	1969	ENDIF
[978]	1970	ENDDO
[1159]	1971	ELSEIF ( bc_ns_dirrad ) THEN
[996]	1972	DO j = nys, nyn
[978]	1973	IF ( ( j * dy ) > ( ny * dy - pt_damping_width ) ) THEN
[1322]	1974	ptdf_y(j) = pt_damping_factor * &
[1340]	1975	SIN( pi * 0.5_wp * &
	1976	( ( j - ny ) * dy + pt_damping_width ) / &
	1977	REAL( pt_damping_width, KIND=wp ) )**2
[1]	1978	ENDIF
[978]	1979	ENDDO
[1159]	1980	ELSEIF ( bc_ns_raddir ) THEN
[996]	1981	DO j = nys, nyn
[978]	1982	IF ( ( j * dy ) < pt_damping_width ) THEN
[1322]	1983	ptdf_y(j) = pt_damping_factor * &
[1340]	1984	SIN( pi * 0.5_wp * &
	1985	( pt_damping_width - j * dy ) / &
	1986	REAL( pt_damping_width, KIND=wp ) )**2
[1]	1987	ENDIF
[73]	1988	ENDDO
[1]	1989	ENDIF
[51]	1990
[1]	1991	!
	1992	!-- Input binary data file is not needed anymore. This line must be placed
	1993	!-- after call of user_init!
	1994	CALL close_file( 13 )
[2934]	1995	!
	1996	!-- In case of nesting, put an barrier to assure that all parent and child
	1997	!-- domains finished initialization.
	1998	#if defined( __parallel )
	1999	IF ( nested_run ) CALL MPI_BARRIER( MPI_COMM_WORLD, ierr )
	2000	#endif
[1]	2001
[2934]	2002
[3987]	2003	CALL location_message( 'model initialization', 'finished' )
[1]	2004
	2005	END SUBROUTINE init_3d_model

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source: palm/trunk/SOURCE/init_3d_model.f90 @ 4327

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