Listing of the steering parameters in alphabetical order

We encountered that the alphabetical list is not always up-to-date. Please also search the pages of the module-specific namelists!

Namelist abbreviations:

• agt: &agent_parameters
  
• biomet: &biometeorology_parameters
  
• bulkc: &bulk_cloud_parameters
  
• chem: &chemistry_parameters
  
• indoor: &indoor_parameters
  
• ini: &initialization_parameters
  
• lpm: &particle_parameters
  
• lsm: &land_surface_parameters
  
• nest: &nesting_parameters
  
• ocean: &ocean_parameters
  
• pcm: &plant_canopy_parameters
  
• rrtmg: &radiation_parameters
  
• run: &runtime_parameters
  
• salsa: &salsa_parameters
  
• spec: &spectra_parameters
  
• stg: &stg_par
  
• surf: &surface_data_output_parameters
  
• user: &user_parameters
  
• usm: &urban_surface_parameters
  
• vfm: &virtual_flight_parameters
  
• vmm: &virtual_measurement_parameters
  
• wtm: &wind_turbine_parameters

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Parameter Name	Namelist Group	Fortran Type	Default Value	Explanation
a_rand_target	agt	L(100)	100 * .F.	Flag for agents within a group to have random targets outside of model domain.
advect_particle_water	salsa	L	.T.	Parameter to switch on the advection of condensed water in aerosol particles.
adx	agt	R(100)	100 * 9999999.9	Distance along x between agents within an agent source (in m).
ady	agt	R(100)	100 * 9999999.9	Distance along y between agents within an agent source (in m).
aero_resist_kray	lsm	L	.T.	If set to .TRUE., the parameterization of the aerodynamic resistance for vertical land surface elements follows Krayenhoff & Voogt (2007).
aero_species	lpm	C*15	'nacl'	Define chemical composition of aerosol particles.
aero_type	lpm	C*15	'maritime'	Define an aerosol spectrum using three log-normal distributions.
aero_weight	lpm	R	1.0	Scale the number concentration defined by aero_type.
aerosol_bulk	bulkc	C*20	'nacl'	Parameter to choose the used aerosol type.
aerosol_flux_dpg	salsa	R(7)	1.3E-8, 5.4E-8, 8.6E-7, 2.0E-7, 2.0E-7, 2.0E-7, 2.0E-7	The number geometric mean diameter per aerosol emission mode.
aerosol_flux_mass_fracs_a	salsa	R(7)	1.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0	Mass fractions of chemical components for horizontally homogeneous aerosol emission.
aerosol_flux_sigmag	salsa	R(7)	1.8, 2.16, 2.21, 2.0, 2.0, 2.0, 2.0	The standard deviation of the log-normal size distribution per aerosol emission mode.
agent_maximum_age	agt	R(100)	100 * 9999999.9	Maximum time an agent can spend in the simulation before it is deleted.
air_density	wtm	R	1.225	The air density (in kg/m3) is necessary to convert the aerodynamic torque of the rotor into a power (in W).
albedo	rrtmg	R	0.2	Surface albedo.
albedo_lw_dif	rrtmg	R	depends on albedo_type	Surface albedo for longwave diffuse radiation for a solar angle of 60°.
albedo_lw_dir	rrtmg	R	depends on albedo_type	Surface albedo for longwave direct radiation for a solar angle of 60°.
albedo_type	rrtmg	I	5	Controls the choice of the surface albedos for direct/diffuse/broadband albedo according to the predefined land surfaces.
albedo_sw_dif	rrtmg	R	depends on albedo_type	Surface albedo for shortwave diffuse radiation for a solar angle of 60°.
albedo_sw_dir	rrtmg	R	depends on albedo_type	Surface albedo for shortwave direct radiation for a solar angle of 60°.
alloc_factor	lpm	R	20.0	Factor (in percent) describing the memory allocated additionally to the memory needed for initial particles at a given grid cell.
alloc_factor_mas	agt	R	20.0	Factor (in percent) describing the memory allocated additionally to the memory needed for initial agents at a given grid cell.
alpha_lad	pcm	R	9999999.9	Coefficient for constructing leaf area density profile.
alpha_surface	ini	R	0.0	Inclination of the model domain with respect to the horizontal (in degrees).
alpha_vangenuchten	lsm	R	depends on soil_type	Value of the coefficient alpha for the calculation of the hydraulic conductivity of soil in the parametrization after Van Genuchten
anterpolation_buffer_width	nest	I	2	Width of the anterpolation boundary buffer in terms of number of parent-grid points.
anterpolation_starting_height	nest	R	0.0	This parameter controls the canopy-restricted anterpolation.
approximation	ini	C*20	'boussinesq'	Parameter to choose the approximation of the model equations.
asl	agt	R(100)	100 * 9999999.9	Left border of agent source(s) (in m).
asn	agt	R(100)	100 * 9999999.9	North border of agent source(s) (in m).
asr	agt	R(100)	100 * 9999999.9	Right border of agent source(s) (in m).
ass	agt	R(100)	100 * 9999999.9	South border of agent source(s) (in m).
at_x	agt	R(100)	100 * 9999999.9	x-coordinate of agent group target (in m).
at_y	agt	R(100)	100 * 9999999.9	y-coordinate of agent group target (in m).
averaging_interval	run	R	0.0	Averaging interval for all output of temporally averaged data (in s).
averaging_interval_pr	run	R	value of averaging_interval	Averaging interval for vertical profiles output to local file DATA_1D_PR_NETCDF (in s).
averaging_interval_sp	spec	R	value of averaging_interval	Averaging interval for spectra output to local file DATA_1D_SP_NETCDF (in s).
averaging_interval_surf	surf	R	value of averaging_interval	Averaging interval for surface output data (in s).
bc_aer_b	salsa	C*20	'neumann'	The bottom boundary condition of the aerosol (and gas) concentrations.
bc_aer_l	salsa	C*20	value of bc_lr	The left boundary condition of the aerosol (and gas) concentrations.
bc_aer_n	salsa	C*20	value of bc_ns	The north boundary condition of the aerosol (and gas) concentrations.
bc_aer_r	salsa	C*20	value of bc_lr	The right boundary condition of the aerosol (and gas) concentrations.
bc_aer_s	salsa	C*20	value of bc_ns	The south boundary condition of the aerosol (and gas) concentrations.
bc_aer_t	salsa	C*20	'neumann'	The top boundary condition of the aerosol (and gas) concentrations.
bc_cs_b	chem	C*20	'dirichlet'	Bottom boundary condition of the chemical species (cs) concentration.
bc_cs_l	chem	C*20	value of bc_lr	Left boundary condition of the chemical species (cs) concentration.
bc_cs_n	chem	C*20	value of bc_ns	North boundary condition of the chemical species (cs) concentration.
bc_cs_r	chem	C*20	value of bc_lr	Right boundary condition of the chemical species (cs) concentration.
bc_cs_s	chem	C*20	value of bc_ns	South boundary condition of the chemical species (cs) concentration.
bc_cs_t	chem	C*20	'initial_gradient'	Top boundary condition of the chemical species (cs) concentration.
bc_e_b	ini	C*20	'neumann'	Bottom boundary condition of the TKE.
bc_lr	ini	C*20	'cyclic'	Boundary condition along x (for all quantities).
bc_mas_lr	agt	C*15	'absorb'	Boundary condition for agents at the left and right model boundary.
bc_mas_ns	agt	C*15	'absorb'	Boundary condition for agents at the north and south model boundary.
bc_ns	ini	C*20	'cyclic'	Boundary condition along y (for all quantities).
bc_p_b	ini	C*20	'neumann'	Bottom boundary condition of the perturbation pressure.
bc_p_t	ini	C*20	'dirichlet'	Top boundary condition of the perturbation pressure.
bc_par_b	lpm	C*15	'reflect'	Bottom boundary condition for particle transport.
bc_par_lr	lpm	C*15	'cyclic'	Lateral boundary condition (x-direction) for particle transport.
bc_par_ns	lpm	C*15	'cyclic'	Lateral boundary condition (y-direction) for particle transport.
bc_par_t	lpm	C*15	'absorb'	Top boundary condition for particle transport.
bc_pt_b	ini	C*20	'dirichlet'	Bottom boundary condition of the potential temperature.
bc_pt_t	ini	C*20	'initial_gradient'	Top boundary condition of the potential temperature.
bc_q_b	ini	C*20	'dirichlet'	Bottom boundary condition of the water vapor / total water mixing ratio.
bc_q_t	ini	C*20	'neumann'	Top boundary condition of the water vapor / total water mixing ratio.
bc_s_b	ini	C*20	'dirichlet'	Bottom boundary condition of the scalar concentration.
bc_s_t	ini	C*20	'neumann'	Top boundary condition of the scalar concentration.
bc_sa_t	ocean	C*20	'neumann'	Top boundary condition of the salinity.
bc_uv_b	ini	C*20	'dirichlet'	Bottom boundary condition of the horizontal wind components u and v.
bc_uv_t	ini	C*20	'dirichlet'	Top boundary condition of the horizontal velocity components u and v.
beta_lad	pcm	R	9999999.9	Coefficient for constructing leaf area density profile.
bottom_salinityflux	ocean	R	0.0	Kinematic salinity flux near the surface (in psu m/s).
bufsize_alltoall	rtm	I	0	Parameter to set max number of items sent in MPI_AlltoAll calls (0=infinite).
building_height	ini	R	50.0	Height of a single building in m.
building_length_x	ini	R	50.0	Width of a single building in m.
building_length_y	ini	R	50.0	Depth of a single building in m.
building_type	usm	I	1	Index of used building type in building database.
building_wall_left	ini	R	building centered in x-direction	x-coordinate of the left building wall in m.
building_wall_south	ini	R	building centered in y-direction	y-coordinate of the South building wall in m.
c_sedimentation	bulkc	R	2.0	Courant number of sedimentation process.
c_surface	lsm	R	depends on vegetation_type	Heat capacity of the surface (skin layer) per unit of area (in J/m²/K).
calc_soil_moisture _during_spinup	ini	L	.F.	Solve prognosic equation for soil moisture in the spinup phase.
call_chem_at_all_substeps	chem	L	.FALSE.	Switch whether chemistry is called at each substep of the Runge-Kutta scheme or just at each full dynamical time step 'dt'.
call_psolver_at _all_substeps	ini	L	.T.	Switch to steer the call of the pressure solver.
call_microphysics_at _all_substeps	bulkc	L	.F.	Switch to steer the call of 2-moment microphysics.
canopy_drag_coeff	pcm	R	0.0	Drag coefficient used in the plant canopy model.
canopy_mode	pcm	C*20	'homogeneous'	Canopy mode.
canyon_height	ini	R	50.0	Street canyon height in m.
canopy_resistance _coefficient	lsm	R	depends on vegetation_type	A coefficient (in 1/hPa) for the dependence of the canopy resistance on water vapor pressure deficit.
canyon_width_x	ini	R	9999999.9	Street canyon width in x-direction in m.
canyon_width_y	ini	R	9999999.9	Street canyon width in y-direction in m.
canyon_wall_left	ini	R	canyon centered in x-direction	x-coordinate of the left canyon wall in m.
canyon_wall_south	ini	R	canyon centered in y-direction	y-coordinate of the South canyon wall in m.
chem_gasphase_on	chem	L	.TRUE.	Switch for switching off the chemical reactions but still doing the transport for all chemical compounds. Useful for test purposes.
chem_mechanism	chem	C*30	'phstatp'	Parameter for check of chemistry mechanism.
cfl_factor	ini	R	0.1, 0.8 or 0.9	Time step limiting factor.
clothing	biomet	I	1	Choose clothing outfit for human model.
cloud_droplets	ini	L	.F.	Parameter to switch on usage of cloud droplets.
cloud_scheme	bulkc	C*20	'saturation_adjust'	Parameter to choose microphysics for bulk cloud physics.
cloud_water_sedimentation	bulkc	L	.F.	Parameterize cloud water sedimentation in cloud physics scheme.
coll_t_0	agt	R	3.0	Range of unscreened interactions for social force model (in s).
collective_wait	ini	L	see parameter description	Set barriers in front of collective MPI operations.
collision_kernel	lpm	C*15	'none'	Parameter to steer cloud droplet growth by collision processes.
collision_turbulence	bulkc	L	.F.	Parameterize turbulence effects on autoconversion and accretion of cloud droplets.
comp_spectra_level	spec	I(100)	no level	Vertical level for which horizontal spectra are to be calculated and output (gridpoints).
compute_velocity_seeds _local	stg	L	.F.	Flag to control the computation of velocity seeds that are the basis of the imposed disturbances.
complex_terrain	ini	L	.F.	Parameter to enable simulations featuring complex topography.
conserve_volume_flow	ini	L	.F.	Conservation of volume flow in x- and y-direction.
conserve_volume _flow_mode	ini	C*16	'default'	Modus of volume flow conservation.
conserve_water_content	lsm	L	.T.	Flag parameter for the bottom boundary condition of the soil model.
consider_obstructions	biomet	L	.T.	Considers obstruction.
constant_albedo	rrtmg	L	.F.	Parameter to fix the surface albedo.
constant_flux_layer	ini	L	.T.	Parameter to switch on a constant flux layer between the surface and first computational grid level.
constant_roughness	lsm	L	.F.	Keep prescribed roughness length constant in time.
corner_gate_start	agt	R	0.5	Distance of navigation gate starting point to obstacle corner (in m).
corner_gate_width	agt	R	1.0	Width of navigation gate at obstacle corners (in m).
coupling_start_time	ini	R	0.0	Simulation time of a precursor run..
cpu_log_barrierwait	run	L	.F.	Set an MPI-barrier at the beginning of each CPU time measurement.
create_disturbances	run	L	.T.	Switch to impose random perturbations to the horizontal velocity field.
cross_profiles	run	C*100(100)	see parameter description	Determines which vertical profiles are to be presented in which coordinate system if the plot software palmplot is used.
cs_heights	chem	R(99,100)	9999999.9	Height levels above ground (in m) to go with cs_profile in order to define initial profiles of chemical species.
cs_name	chem	C*11(99)	'novalue'	Names of chemical species where surface concentrations or concentration profiles are prescribed.
cs_profile	chem	R(99,100)	9999999.9	Concentration values of chemical species (gases in ppm, particulate matter in kg m-3) at cs_heights.
cs_surface	chem	R	0.0	Concentration value for chemical species at the surface (gases in ppm, particulate matter in kg m-3).
cthf	pcm	R	0.0	Average heat flux that is prescribed at the top of the plant canopy (in K m/s).
curvature_solution _effects	lpm	L	.F.	Parameter to consider solution and curvature effects on the equilibrium vapor pressure of cloud droplets.
curvature_solution _effects_bulk	bulkc	L	.F.	Parameter to switch on an activation scheme which considers curvature and solution effects of cloud droplet activation.
cycle_mg	ini	C*1	'w'	Type of cycle to be used with the multi-grid method.
damp_level_1d	ini	R	zu(nz + 1)	Height where the damping layer begins in the 1d-model (in m).
data_output	run	C*10(100)	100*' '	Quantities for which 2d cross section and/or 3d volume data are to be output.
data_output_2d_on _each_pe	run	L	.T.	Output 2d cross section data by one or all processors.
data_output _during_spinup	ini	L	.F.	Parameter for switching on data output in the spinup phase (see spinup_time).
data_output_masks	run	C*10 (max_masks, 100)	max_masks*100*' '	Quantities for which masked data are to be output.
data_output_masks_user	user	C*10 (max_masks, 100)	max_masks*100*' '	User-defined quantities for which masked data are to be output.
data_output_pr	run	C*10(100)	100*' '	Quantities for which vertical profiles (horizontally averaged) are to be output.
data_output_pr_user	user	C*10(200)	200*' '	User defined quantities for which horizontally averaged profile data is to be output.
data_output_pts	lpm	C*30(50)
data_output_sp	spec	C*10(10)	10*' '	Quantities for which horizontal spectra are to be calculated and output.
data_output_surf	surf	C*300(100)	' '	Quantities for which surface data shall be output.
data_output_user	user	C*10(100)	100*' '	User defined quantities for which 2d cross section and/or 3d volume data are to be output.
daytype_mdh	chem	C*80	'workday'	Type of weekday required for the MDH (MonthDayHour) case of the DEFAULT mode of the emissions module.
deallocate_memory	lpm	L	.T.	Parameter to enable deallocation of unused memory.
deallocate_memory_mas	agt	L	.T.	Parameter to enable deallocation of unused memory.
deep_soil_temperature	lsm	R	9999999.9	Deep soil temperature (K) used as bottom boundary condition for the heat diffusion in the soil model.
density_ratio	lpm	R(10)	0.0, 9*9999999.9	Ratio of the density of the fluid and the density of the particles.
depo_pcm_par	salsa	C(20)	'zhang2001'	The method to solve the aerosol size specific dry deposition velocity (in m s-1).
depo_pcm_type	salsa	C(20)	'deciduous_broadleaf'	Leaf type applied in the dry deposition model.
depo_surf_par	salsa	C(20)	'zhang2001'	The method to solve the aerosol size specific dry deposition velocity (in m s-1) over an urban surface.
deposition_dry	chem	L	.FALSE.	Switches the deposition calculation for particles and gases ON (.TRUE.) or OFF (.FALSE.)
dim_size_agtnum_manual	agt	I	9999999	Manually set size for agent-number dimension.
dim_size_factor_agtnum	agt	R	1.0	Factor to modify the agent-number dimension size for agent output.
dissipation_classes	lpm	I	10	Number of dissipation classes to be used in the collision efficiency table.
dissipation_1d	ini	C*20	'detering'	Calculation method for the energy dissipation term in the TKE equation of the 1d-model.
dist_to_int_target	agt	R	0.25	Distance (in m) at which an intermittent target counts as reached.
disturbance_amplitude	run	R	0.25	Maximum perturbation amplitude of the random perturbations imposed to the horizontal velocity field (in m/s).
disturbance_energy _limit	run	R	0.01	Upper limit value of the perturbation energy of the velocity field used as a criterion for imposing random perturbations (in m2/s2).
disturbance_level_b	run	R	zu(3) or zu(nz*2/3)	Lower limit of the vertical range for which random perturbations are to be imposed on the horizontal wind field (in m).
disturbance_level_t	run	R	zu(nz/3) or zu(nzt-3)	Upper limit of the vertical range for which random perturbations are to be imposed on the horizontal wind field (in m).
domain_layouts	nest	derived TYPE pmc_layout(64)	None	General information about the nested domains to be used.
do2d_at_begin	run	L	.F.	Output 2d cross section data by one or all processors.
do3d_at_begin	run	L	.F.	Output of 3d volume data at the beginning of a run.
dp_external	run	L	.F.	External pressure gradient switch.
dp_smooth	run	L	.F.	Vertically smooth the external pressure gradient using a sinusoidal smoothing function.
dp_level_b	run	R	0.0	Lower limit of the vertical range for which the external pressure gradient is applied (in m).
dpdxy	run	R(2)	2*0.0	Values of the external pressure gradient applied in x- and y-direction, respectively (in Pa/m).
dpg	salsa	R(7)	1.3E-8, 5.4E-8, 8.6E-7, 2.0E-7, 2.0E-7, 2.0E-7, 2.0E-7	The number geometric mean diameter per aerosol mode (in m).
dry_aerosol_radius	bulkc	R	0.05E-6	The mean geometric radius of the dry aerosol spectrum.
dt	run	R	variable	Time step for the 3d-model (in s).
dt_agent	agt	R	0.02	Agent timestep (in seconds).
dt_arel	agt	R	9999999.9	Interval in which agents are released at their respective sources (in s).
dt_averaging_input	run	R	0.0	Temporal interval of data which are subject to temporal averaging (in s).
dt_averaging _input_pr	run	R	value of dt_averaging_input	Temporal interval of data which are subject to temporal averaging of vertical profiles and/or spectra (in s).
dt_coupling	run	R	9999999.9	Temporal interval for the data exchange in case of runs with coupled models (e.g. atmosphere - ocean) (in s).
dt_data_output	run	R	9999999.9	Temporal interval at which data (3d volume data, cross sections, vertical profiles, spectra) shall be output (in s).
dt_data_output_av	run	R	value of dt_data_output	Temporal interval at which time averaged 3d volume data and/or 2d cross section data shall be output (in s).
dt_data_output_wtm	wtm	R	0.0	Output interval (s) for NetCDF data. this parameter does not affect the deprecated ASCII data output that is written at each time step. With the default value 0.0 data will be output every time step.
dt_disturb	run	R	9999999.9	Temporal interval at which random perturbations are to be imposed on the horizontal velocity field (in s).
dt_domask	run	R (max_masks)	max_masks * value of dt_data_output	Temporal interval at which instantaneous masked data shall be output (in s).
dt_dopr	run	R	value of dt_data_output	Temporal interval at which data of vertical profiles shall be output (to local file DATA_1D_PR_NETCDF (in s).
dt_dopr_listing	run	R	9999999.9	Temporal interval at which data of vertical profiles shall be output (output for printouts, local file LIST_PROFIL) (in s).
dt_dopts	lpm	R	value of dt_data_output	Temporal interval at which time series data of particle quantities shall be output (in s).
dt_dosp	spec	R	value of dt_data_output	Temporal interval at which spectra data shall be output (in s).
dt_dosurf	surf	R	value of dt_data_output	Temporal interval at which instantaneous surface data shall be output (in s).
dt_dosurf_av	surf	R	value of dt_dosurf	Temporal interval at which time averaged surface data shall be output (in s).
dt_dots	run	R	see parameter description	Temporal interval at which time series data shall be output (in s).
dt_do2d_xy	run	R	value of dt_data_output	Temporal interval at which horizontal cross section data shall be output (in s).
dt_do2d_xz	run	R	value of dt_data_output	Temporal interval at which vertical cross section data (xz) shall be output (in s).
dt_do2d_yz	run	R	value of dt_data_output	Temporal interval at which vertical cross section data (yz) shall be output (in s).
dt_do3d	run	R	value of dt_data_output	Temporal interval at which 3d volume data shall be output (in s).
dt_max	run	R	20.0	Maximum allowed value of the timestep (in s).
dt_min_part	lpm	R	0.0002	Minimum value for the particle timestep when SGS velocities are used (in s).
dt_prel	lpm	R	9999999.9	Temporal interval at which particles are to be released from a particle source (in s).
dt_pr_1d	ini	R	9999999.9	Temporal interval of vertical profile output of the 1D-model (in s).
dt_radiation	rrtmg	R	0.0	Time step of the radiation model (in s).
dt_restart	run	R	9999999.9	Temporal interval at which a new restart run is to be carried out (in s).
dt_run_control	run	R	60.0	Temporal interval at which run control output is to be made (in s).
dt_run_control_1d	ini	R	60.0	Temporal interval of runtime control output of the 1d-model (in s).
dt_salsa	salsa	R	0.1	Time step for calling aerosol dynamic processes of SALSA.
dt_spinup	ini	R	5.0	Time step during integration of the land surface, urban surface, and radiation models during the spinup phase.
dt_stg_adjust	stg	R	1800.0	Time interval (in seconds) to adjust the turbulence statistics, i.e. the Reynolds-stress tensor, which define the amplitude and correlation of imposed correlation.
dt_stg_call	stg	R	0.0	Time interval to call the synthetic turbulence generator.
dt_virtual_measurement	vmm	R	0.01	Temporal interval at which virtual measurements shall be output (in s).
dt_write_agent_data	agt	R	9999999.9	Output interval for agent NetCDF output (in s).
dt_write_particle _data	lpm	R	9999999.9	Temporal interval for output of particle data (in s).
dx	ini	R	1.0	Horizontal grid spacing along the x-direction (in m).
dy	ini	R	1.0	Horizontal grid spacing along the y-direction (in m).
dz	ini	R(10)	10 * -1	Vertical grid spacing (in m).
dz_max	ini	R	999.0	Allowed maximum vertical grid spacing (in m).
dz_soil	lsm	R(20)	see description	Thickness of the individual soil layers (in m).
dz_stretch_factor	ini	R	1.08	Stretch factor for a vertically stretched grid (see dz_stretch_level).
dz_stretch_level	ini	R	+/- 9999999.9	Height level above/below which the grid is to be stretched vertically (in m).
e_init	ini	R	0.0	Initial TKE in m2s-2.
e_min	ini	R	0.0	Minimum TKE in m2s-2.
emiss_factor_main	chem	R(99)	-9999.0	Constant emission scaling factor for MAIN street types, used in the PARAMETERIZED mode of chem_emission module.
emiss_factor_main	salsa	R	0.0	Constant emission scaling factor for main street types.
emiss_factor_side	chem	R(99)	-9999.0	Constant emission scaling factor for SIDE (secondary) street types, used in the PARAMETERIZED mode of chem_emission module.
emiss_factor_side	salsa	R	0.0	Constant emission scaling factor for side street types.
emiss_lod	chem	I	-1	Level of Detail / Mode of chemistry emissions (Options: 0=='PARAMETERIZED', 1=='DEFAULT', 2=='PREPROCESSED').
emisssions_anthropogenic	chem	L	.FALSE.	Switches the chem_emission module ON (.TRUE.) or OFF (.FALSE.)
emissivity	rrtmg	R	0.95	Surface emissivity (0-1).
end_time	run	R	0.0	Simulation time of the 3D model (in s).
end_time_arel	agt	R	9999999.9	Simulation time at which the release of agent is stopped (in s).
end_time_prel	lpm	R	9999999.9	Time of the last release of particles (in s).
end_time_1d	ini	R	864000.0	Time to be simulated for the 1D-model (in s).
ensemble_member_nr	ini	I	0	Number of statistically independent members of a simulation.
f_shortwave_incoming	lsm	R	depends on vegetation_type	Fraction of the net shortwave radiation that is transmitted directly to the top soil layer.
feedback_to_palm	salsa	L	.F.	Parameter to switch on the dynamic feedback to the flow due to condensation of water vapour on aerosol particles.
field_capacity	lsm	R	depends on soil_type	Soil moisture at field capacity (in m³/m³).
fft_method	ini	C*20	'system specific'	FFT-method to be used.
flight_angle	vfm	R(100)	100*45.0	Horizontal flight angle (in degrees) describing the flight direction.
flight_begin	vfm	R	0.0	Start time of virtual flight measurement.
flight_end	vfm	R	9999999.9	End time of virtual flight measurement.
flight_level	vfm	R(100)	100*100.0	Flight level in meter.
flux_input_mode	ini	C*40	'approximation-specific'	Parameter to choose the flux unit for input data.
flux_output_mode	ini	C*40	'approximation-specific'	Parameter to choose the flux unit for outputdata.
force_print_header	run	L	.F.	Steering of header output to the local file RUN_CONTROL.
galilei_transformation	ini	L	.F.	Application of a Galilei-transformation to the coordinate system of the model.
gear_efficiency	wtm	R	1.0	Efficiency of the gear: Loss between rotor and generator.
gear_ratio	wtm	R	97.0	Gear ratio from rotor to generator.
generator_efficiency	wtm	R	0.944	Electric efficiency of the generator.
generator_inertia	wtm	R	534.116	Inertia of the generator (in kg/m2).
generator_power_rated	wtm	R	5296610.0	Rated power of the wind turbine (in W).
generator_speed_rated	wtm	R	121.6805	Rated generator speed (in rad/s).
generator_torque_max	wtm	R	47402.91	Maximum Torque of the generator (in Nm).
generator_torque_rate_max	wtm	R	15000.0	Maximum generator torque rate (in Nm/s).
graupel	bulkc	L	.F.	Parameter to turn on prognostic equations of mixing ratio and number concentration for graupel.
h2so4_init	salsa	R	1.0	Initial number concentration (in m-3) of gaseous sulphuric acid H2SO4 (g).
hno3_init	salsa	R	1.0	Initial number concentration (in m-3) of gaseous nitric acid HNO3 (g).
hub_x	wtm	R(100)	9999999.9	Longitudinal position of the rotor center (in m).
hub_y	wtm	R(100)	9999999.9	Lateral position of the rotor center (in m).
hub_z	wtm	R(100)	9999999.9	Vertical position of the rotor center (in m). This represents the hub height of the turbine.
humidity	ini	L	.F.	Parameter to switch on the prognostic equation for water vapor mixing ratio q.
hydraulic_conductivity	lsm	R	depends on soil_type	Hydraulic conductivity of the soil at saturation (in m/s).
ice_crystal_sedimentation	bulkc	L	.F.	Parameter to consider sedimentation of ice crystal according to Seifert and Beheng 2006.
icntrl	chem	I(20)	0	Selection and steering of the chemistry solver.
in_init	bulkc	R	1.0E3	Background ice nuclei concentration.
indoor_during_spinup	indoor	L	.F.	Control flag to switch-off/on the indoor-model during wall/soil spinup.
inflow_damping_height	ini	R	from precursor run	Height below which the turbulence signal is used for turbulence recycling (in m).
inflow_damping_width	ini	R	0.1* inflow _damping_height	Transition range within which the turbulence signal is damped to zero (in m).
inflow_disturbance _begin	ini	I	MIN(10, nx/2 or ny/2)	Lower limit of the horizontal range for which random perturbations are to be imposed on the horizontal velocity field (gridpoints).
inflow_disturbance _end	ini	I	MIN(100, 3/4*nx or 3/4*ny)	Upper limit of the horizontal range for which random perturbations are to be imposed on the horizontal velocity field (gridpoints).
initial_indoor_temperature	indoor	R	293.15	Initial indoor temperatures.
initial_weighting_factor	lpm	R	1.0	Factor to define the real number of initial droplets in a grid box.
initializing_actions	ini	C*100	no default value	Initialization actions to be carried out.
initial_weighting _factor	lpm	R	1.0	Factor to define the real number of initial droplets in a grid cell.
km_constant	ini	R	variable (computed from TKE)	Constant eddy diffusivities are used (laminar simulations).
l_vangenuchten	lsm	R	depends on soil_type	Value of the coefficient l for the calculation of the hydraulic conductivity of soil in the parametrization after Van Genuchten.
lad_surface	pcm	R	0.0	Surface value of the leaf area density (in m2/m3).
lad_type_coef	pcm	R(11)	1.0	Multiplicative coefficients for different types of plant canopy, e.g. to account for deciduous tree during wintertime. Please note, this is only active when data is read from ASCII file.
lad_vertical_gradient	pcm	R(10)	10*0.0	Gradient(s) of the leaf area density (in m2/m4).
lad_vertical_gradient _level	pcm	R(10)	10*0.0	Height level above which the gradient of the leaf area density defined by lad_vertical_gradient is effective (in m).
lai_beta	pcm	R	0.0	Leaf area index needed for construction of leaf area density profile.
lambda_surface_stable	lsm	R	depends on vegetation_type	Heat conductivity (between atmosphere and soil) (in W/m²/K) in case of stable stratification.
lambda_surface_unstable	lsm	R	depends on vegetation_type	Heat conductivity (between atmosphere and soil) (in W/m²/K) in case of unstable stratification.
large_scale_forcing	ini	L	.F.	Parameter to switch on the use of large-scale forcing information from an external file.
large_scale_subsidence	ini	L	.F.	Parameter to switch on the use of large scale subsidence/ascent.
latitude	ini	R	55.0	Geographical latitude (in degrees).
leaf_area_index	lsm	R	depends on vegetation_type	Leaf area index of the canopy (in m²/m²).
leaf_scalar_exch_coeff	pcm	R	0.0	Scalar exchange coefficient for a leaf (dimensionless).
leaf_surface_conc	pcm	R	0.0	Concentration of a passive scalar at the surface of a leaf (in kg m-3 or ppm).
leg_mode	vfm	C(100)	100*'cyclic'	Flight mode, either 'cyclic' or 'return'.
limiter_sedimentation	bulkc	L	.T.	Use limiter in raindrop sedimentation process.
listspec	salsa	C*3(7)	'SO4', 6 * ' '	List of activated aerosol chemical components.
log_sigma	lpm	R(3)	2.0	Parameters of initial aerosol spectrum.
longitude	ini	R	0.0	Geographical longitude (in degrees).
loop_optimization	ini	C*16	'cache'	Method used to optimize loops for solving the prognostic equations.
lsf_exception	ini	L	.F.	Parameter to explicitly allow large-scale forcing in case of topography /= 'flat' .
lw_radiation	rrtmg	L	.T.	Parameter to switch on/off longwave radiation.
main_street_id	chem / salsa	I(99)	0	Index for identifying MAIN streets following street type classes from OpenStreetMap.
masking_method	ini	L	.F.	Switch for topography boundary conditions in multigrid solver.
mask_scale_x	run	R	1.0	Scaling length for masked data output along x-direction.
mask_scale_y	run	R	1.0	Scaling length for masked data output along y-direction.
mask_scale_z	run	R	1.0	Scaling length for masked data output along z-direction.
mask_x	run	R (max_masks, 100)	max_masks*100*-1.0	All x-coordinates of mask positions (in multiples of mask_scale_x).
mask_y	run	R (max_masks, 100)	max_masks*100*-1.0	All y-coordinates of mask positions (in multiples of mask_scale_y).
mask_z	run	R (max_masks, 100)	max_masks*100*-1.0	All z-coordinates of mask positions (in multiples of mask_scale_z).
mask_x_loop	run	R (max_masks, 3)	max_masks * (/-1.0,-1.0,-1.0/)	Loop begin, end and stride for x-coordinates of mask locations for masks (in multiples of mask_scale_x).
mask_y_loop	run	R (max_masks, 3)	max_masks * (/-1.0,-1.0,-1.0/)	Loop begin, end and stride for y-coordinates of mask locations for masks (in multiples of mask_scale_y).
mask_z_loop	run	R (max_masks, 3)	max_masks * (/-1.0,-1.0,-1.0/)	Loop begin, end and stride for z-coordinates of mask locations for masks (in multiples of mask_scale_z).
mass_fracs_a	salsa	R(7)	1.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0	Mass fractions of soluble chemical components (subrange 2a).
mass_fracs_b	salsa	R(7)	0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0	Mass fractions of insoluble chemical components (subrange 2b).
max_dist_from_path	agt	R	1.0	Agent distance from current path section that triggers recalculation of that agent's path (in m).
max_elev_change	vfm	R(100)	100*0.0	Maximum possible elevation change in case rate_of_climb is not equal to zero.
max_number_particles _per_gridbox	lpm	I	100	Threshold for splitting of super droplets.
max_raytracing_dist	rrtmg	R	-999.0	Maximum distance for raytracing (in meters).
max_street_id	chem / salsa	I(99)	0	Maximum index value for identifying ALL (MAIN and SIDE) streets following street type classes from OpenStreetMap.
merging	lpm	L	.F.	Switch on/off merging algorithm for particles (if cloud_droplets=.T.).
mg_cycles	ini	I	4	Number of cycles to be used with the multigrid scheme.
mg_switch_to _pe0_level	ini	I	-1	Grid level at which data shall be gathered on PE0.
microphysics_ice_phase	bulkc	L	.F.	Parameter to turn on ice phase and calculate prognostic equations for ice crystal number concentration and mixing ratio.
min_canopy_resistance	lsm	R	depends on vegetation_type	Minimum canopy (i.e., stomatal) resistance (in s/m).
min_irrf_value	rrtmg	R	1E-6	Minimum potential irradiance factor value for raytracing.
min_nr_agent	agt	I	2	Minimum number of agents for which memory is allocated at every grid cell.
min_soil_resistance	lsm	R	50.0	Minimum soil resistance (in s/m).
mixing_length_1d	ini	C*20	'blackadar'	Mixing length used in the 1d-model.
mode_emis	chem	C*80	'PARAMETERIZED'	Mode of chemistry emissions (Options: 'PARAMETERIZED', 'DEFAULT', 'PREPROCESSED'). Obsolete, use emiss_lod instead
momentum_advec	ini	C*10	'ws-scheme'	Advection scheme to be used for the momentum equations.
mrt_geom	rrtmg	I	1	Method for MRT direction weights simulating a sphere or a human body.
mrt_geom_params	rrtmg	R(2)	0.12, 0.88	Parameters of selected weighting method.
mrt_include_sw	rrtmg	L	.T.	Parameter to include SW radiation into the mean radiant temperature (MRT) calculation.
mrt_nlevels	rrtmg	I	0	Number of vertical boxes above surface for which to calculate mean radiant temperature (MRT).
mrt_skip_roof	rrtmg	L	.T.	Parameter to skip calculating mean radiant temperature (MRT) above the roof surfaces.
multi_agent_system_end	agt	R	9999999.9	Simulation time at which the multi agent system will stop excuting (in s).
multi_agent_system_start	agt	R	0.0	Simulation time at which the multi agent system will start excuting (in s).
my_steps	chem	I(50)	0	List of fixed timesteps.
n_airfoils	wtm	I	8	Number of airfoils of the used turbine model.
n_lognorm	salsa	R(7)	1.04E11, 3.23E10, 5.4E6, 0.0, 0.0, 0.0, 0.0	The total aerosol number concentration per aerosol mode (in m-3).
n_turbines	wtm	I	1	Number of the turbines to be included. Maximum is 100.
n_vangenuchten	lsm	R	depends on soil_type	Value of the coefficient n for the calculation of the hydraulic conductivity of soil in the parametrization after Van Genuchten.
na	lpm	R(3)	100.0	Parameters of initial aerosol spectrum.
na_init	bulkc	R	100.0E6	Background dry aerosol concentration.
nacelle_radius	wtm	R(100)	0.0	Radius of the nacelle for each turbine (in m). This parameter has to be non-zero if the nacelle should be included.
nbin	salsa	I(2)	3, 7	Number of aerosol size bins per subrange.
nc_const	bulkc	R	70.0E6	Fixed cloud droplet number density (in 1/m3).
nesting_chem	chem	L	.TRUE.	Parameter to switch off self-nesting for chemistry variables.
nesting_datatransfer_mode	nest	C*7	'mixed'	Type of nesting data transfer mode.
nesting_mode	nest	C*7	'two-way'	Type of nesting mode.
nesting_offline_chem	chem	L	.TRUE.	Parameter to switch off offline-nesting for chemistry variables.
nesting_offline_salsa	salsa	L	.T.	Parameter to switch off offline nesting for salsa variables.
nesting_salsa	salsa	L	.T.	Parameter to switch off self-nesting for salsa variables.
net_radiation	rrtmg	R	0.0	Net radiation at the surface (in W/m2).
netcdf_data_format	run	I	2	Data format for netCDF files.
netcdf_deflate	run	I	0	Data compression level for NetCDF4/HDF5 format.
netcdf_precision	ini	C*20(10)	single precision for all output quantities	Defines the accuracy of the netCDF output.
neutral	ini	L	.F.	Parameter to switch off calculation of temperature equation.
nf2a	salsa	R	1.0	The number fraction allocated to subrange 2a.
ngsrb	ini	I	2	Number of Gauss-Seidel iterations to be carried out on each grid level of the multigrid Poisson solver.
nh3_init	salsa	R	1.0	Initial number concentration (in m-3) of gaseous ammonia NH3 (g).
nj3	salsa	I	1	Parametrisation for calculating the apparent formation rate of 3 nm sized aerosol particles (J3, in # s-1).
nlcnd	salsa	L	.F.	Parameter to switch on the condensation of gaseous compounds on aerosol particles.
nlcndgas	salsa	L	.F.	Parameter to switch on the condensation of gaseous compounds, excluding water vapour, on aerosol particles.
nlcndgash2oae	salsa	L	.F.	Parameter to switch on the condensation of water vapour on aerosol particles.
nlcoag	salsa	L	.F.	Parameter to switch on the coagulation of aerosol particles.
nldepo	salsa	L	.F.	Parameter to switch of the dry deposition and sedimentation of aerosol particles.
nldepo_pcm	salsa	L	.F.	Parameter to switch on aerosol dry deposition on resolved scale vegetation.
nldepo_surf	salsa	L	.F.	Parameter to switch aerosol dry deposition on topography elements (ground, wall, roofs).
nldistupdate	salsa	L	.T.	Parameter to switch on the aerosol number size distribution update switch.
normalizing_region	run	I	0	Determines the subdomain from which the normalization quantities are calculated.
npex	run	I	no default value	Number of processors along x-direction of the virtual processor net.
npey	run	I	no default value	Number of processors along y-direction of the virtual processor net.
nrefsteps	rrtmg	I	3	Number of reflection steps to be performed inside RTM for the reflected short- and long-wave radiation between mutually visible surfaces.
nsnucl	salsa	I	0	The nucleation scheme applied.
nsor	run	I	20	Number of iterations to be used with the SOR-scheme.
nsor_ini	ini	I	100	Initial number of iterations with the SOR algorithm.
nudging	ini	L	.F.	Parameter to switch on nudging with data from larger scale models or from measurements.
number_concentration	lpm	R	-1.0	Initial particle number concentration.
number_of_agent_groups	agt	I	1	Number of agent groups.
number_of_output_particles	lpm	I	0
number_of _particle_groups	lpm	I	1	Number of particle groups to be used.
number_particles _per_gridbox	lpm	I	-1	Number of created particles per gridbox.
nx	ini	I	no default value	Number of grid points in x-direction.
ny	ini	I	no default value	Number of grid points in y-direction.
nz	ini	I	no default value	Number of grid points in z-direction.
nz_do3d	ini	I	nz + 1	Limits the output of 3d volume data along the vertical direction (grid point index k).
ocnv_init	salsa	R	1.0	Initial number concentration (in m-3) of gaseous non-volatile organic compounds.
ocsv_init	salsa	R	1.0	Initial number concentration (in m-3) of gaseous semi-volatile organic compounds.
off_pr	vmm	I	1	Number of surrounding grid points (in horizontal direction) around the original measurement location where variables shall be sampled (for profile measurements).
off_pr_z	vmm	I	0	Number of surrounding grid points (in vertical direction) around the original measurement location where variables shall be sampled (for profile measurements).
off_tr	vmm	I	1	Number of surrounding grid points (in horizontal direction) around the original measurement location where variables shall be sampled (for trajectory measurements).
off_tr_z	vmm	I	1	Number of surrounding grid points (in vertical direction) around the original measurement location where variables shall be sampled (for trajectory measurements).
off_ts	vmm	I	1	Number of surrounding grid points (in horizontal direction) around the original measurement location where variables shall be sampled (for stationary timeseries measurements).
off_ts_z	vmm	I	50	Number of surrounding grid points (in vertical direction) around the original measurement location where variables shall be sampled (for stationary timeseries measurements).
omega	ini	R	7.29212E-5	Angular velocity of the rotating system (in rad s-1).
omega_sor	ini	R	1.8	Convergence factor to be used with the SOR-scheme.
orientation_angle	biomet	R	0.0	Orientation angle of front/face of the human model.
origin_date_time	ini	C*23	'2019-06-21 12:00:00 +00'	Date and time at model start.
oversize	lpm	R	100.0
outflow_source _plane	ini	R	-	Horizontal position (in m) of the vertical source plane from where instantaneous values of u, v, w, pt, q, s, and e are copied to the outflow boundary.
particles_per_point	lpm	I	1	Number of particles to be started per point.
particle_advection _interpolation	lpm	c*25	'trilinear'	Method for interpolating velocities to particle position.
particle_advection _start	lpm	R	0.0	Time of the first release of particles (in s).
particle_maximum _age	lpm	R	9999999.9	Maximum allowed age of particles (in s).
passive_scalar	ini	L	.F.	Parameter to switch on the prognostic equation for a passive scalar.
pavement_depth_level	lsm	I	depending on pavement_type	Extend of the depth of the pavement in grid levels below the surface.
pavement_heat_capacity	lsm	R	depending on pavement_type	Heat capacity of the pavement (J/K/m³).
pavement_heat_conduct	lsm	R	depending on pavement_type	Thermal conductivity of the pavement (W/m/K).
pavement_type	lsm	I	1	Pavement type classification according to the following list and which loosely follows the Open Street Map classification.
pch_index	pcm	I	0	Grid point index (w-grid) of the upper boundary of the plant canopy layer.
pdx	lpm	R(10)	10*dx	Distance along x between particles within a particle source (in m).
pdy	lpm	R(10)	10*dy	Distance along y between particles within a particle source (in m).
pdz	lpm	R(10)	10*(zu(2) - zu(1))	Distance along z between particles within a particle source (in m).
photolysis_scheme	chem	C*10	'simple'	Photolysis scheme.
pitch_angle	wtm	R(100)	0.0	Pitch angle for a constant pitch angle (in degrees).
pitch_control	wtm	L	.F.	Parameter to switch on the pitch control.
pitch_rate	wtm	R	8.0	Maximum pitch rate (in degree/s).
plant_canopy_transpiration	pcm	L	.F.	Enables calculation of evapotranspiration and corresponding latent heat flux of the resolved plant canopy which utilizes SW and LW radiation fluxes calculated in RTM.
plant_lw_interact	rrtmg	L	.T.	The parameter steers if plant canopy interacts with LW radiation.
prandtl_number	ini	R	1.0	Ratio of the eddy diffusivities for momentum and heat (Km/Kh).
precipitation_amount _interval	run	R	value of dt_do2d_xy	Temporal interval for which the precipitation amount (in mm) shall be calculated and output (in s).
profile_columns	run	I	3	Number of coordinate systems to be plotted in one row by plot software palmplot.
profile_rows	run	I	2	Number of rows of coordinate systems to be plotted on one page by plot software palmplot.
psb	lpm	R(10)	10*zu(nz/2)	Bottom edge of a particle source (in m).
psl	lpm	R(10)	10*0.0	Left edge of a particle source (in m).
psn	lpm	R(10)	10*(ny*dy)	Rear ("north") edge of a particle source (in m).
psolver	ini	C*10	'poisfft'	Scheme to be used to solve the Poisson equation for the perturbation pressure.
psr	lpm	R(10)	10*(nx*dx)	Right edge of a particle source (in m).
pss	lpm	R(10)	10*0.0	Front ("south") edge of a particle source (in m).
pst	lpm	R(10)	10*zu(nz/2)	Top edge of a particle source (in m).
pt_damping_factor	ini	R	0.0	Factor for damping the potential temperature.
pt_damping_width	ini	R	0.0	Width of the damping domain of the potential temperature (in m).
pt_reference	ini	R	value of pt_surface	Reference temperature to be used in the buoyancy term (in K).
pt_surface	ini	R	300.0	Surface potential temperature (in K).
pt_surface_initial _change	ini	R	0.0	Change in surface temperature to be made at the beginning of the 3d run (in K).
pt_vertical_gradient	ini	R(10)	10*0.0	Temperature gradient(s) of the initial temperature profile (in K / 100 m).
pt_vertical_gradient _level	ini	R(10)	10*0.0	Height level above which the temperature gradient defined by pt_vertical_gradient is effective (in m).
pts_id_file	lpm	C*64
pts_increment	lpm	I	1
pts_percentage	lpm	R	100.0
q_surface	ini	R	0.0	Surface water vapor / total water mixing ratio (kg/kg).
q_surface_initial _change	ini	R	0.0	Change in surface water vapor / total water mixing ratio to be made at the beginning of the 3d run (kg/kg).
q_vertical_gradient	ini	R(10)	10*0.0	Humidity gradient(s) of the initial humidity profile (in 1/100 m).
q_vertical_gradient _level	ini	R(10)	10*0.0	Height level above which the humidity gradient defined by q_vertical_gradient is effective (in m).
rad_angular_discretization	rrtmg	L	.T.	Parameter to enable using of the angular discretization for calculation of view factors for reflected radiation.
radiation_interactions_on	rrtmg	L	.T.	The setting of this parameter to .FALSE. forces not to activate RTM even if vertical urban/land surfaces or trees exist in the domain.
radiation_scheme	rrtmg	C*10	'clear-sky'	Radiation scheme to be used.
radius	lpm	R(10)	0.0, 9* 9999999.9	Particle radius (in m).
radius_agent	agt	R	0.25	Quasi-solid core of agents.
radius_classes	lpm	I	20	Number of radius classes to be used in the collision efficiency table.
radius_merge	lpm	R	0.1E-6	Radius threshold for merging of super droplets.
radius_split	lpm	R	40E-6	Radius threshold for splitting of super droplets.
random_generator	ini	C*20	'random-parallel'	Random number generator to be used for creating uniformly distributed random numbers.
random_heatflux	ini	L	.F.	Parameter to impose random perturbations on the internal two-dimensional near surface heat flux field shf.
random_start_position	lpm	L	.F.	Initial position of the particles is varied randomly within certain limits.
random_start_position _agents	agt	L	.T.	Initial position of the particles is varied randomly within certain limits.
rate_of_climb	vfm	R(100)	100*0.0	Vertical speed of the aircraft in meter per second.
rayleigh_damping _factor	ini	R	0.0	Factor for Rayleigh damping.
rayleigh_damping _height	ini	R	2/3*zu(nzt), (ocean: 2/3*zu(nzb))	Height where the Rayleigh damping starts (in m).
raytrace_discrete_azims	rrtmg	I	80	Number of horizontal discrete directions (azimuths) for angular discretization used to calculate the sky view factors, surface-surface view factor, and direct solar visibility for all surfaces.
raytrace_discrete_elevs	rrtmg	I	40	Number of vertical descrete elevations for angular discretization used to calculate the sky view factors, surface-surface view factor, and direct solar visibility for all surfaces.
raytrace_mpi_rma	rrtmg	L	.T.	Parameter to enable the one-sided MPI communication to access LAD array and grid surfaces for raytracing.
rcntrl	chem	R(20)	0.0	Steering of the chemistry solver.
read_agents_from _restartfile	agt	L	.F.	Flag to read agent data from restart file.
read_particles_from _restartfile	lpm	L	.T.	Read particle data from the previous run.
recycling_width	ini	R	9999999.9	Distance of the recycling plane from the inflow boundary (in m).
reference_state	ini	C*20	'initial_profile'	Defines what is used as reference state in the buoyancy term.
region	user	C*40(0:9)	'total domain'	Name(s) of the subdomain(s) defined by the user.
region_15_min	wtm	R	70.16224	Lower generator speed boundary of region 1.5 (in rad/s).
region_2_min	wtm	R	91.21091	Lower generator speed boundary of region 2 [rad/s].
region_2_slope	wtm	R	2.332287	Slope constant for region 2.
reglim	salsa	R(3)	3.0E-9, 5.0E-8, 1.0E-5	Aerosol diameter limits for the subranges (in m) in the following order: lower limit of 1, upper limit of 1 and lower limit of 2, upper limit of 2.
repuls_agent	agt	R	1.5	Magnitude of the repulsive force agents exert on each other (in m2 s-2).
repuls_wall	agt	R	7.0	Magnitude of the repulsive force obstacles exert on agents (in m2 s-2).
residual_limit	ini	R	1.0E-4	Largest residual permitted for the multigrid scheme (in s-2m-3).
residual_moisture	lsm	R	depends on soil_type	Residual soil moisture content (in m³/m³).
restart_data_format	ini	C*20	'fortran_binary'	Binary format of the input and output restart files.
restart_data_format_input	ini	C*20	value of restart_data_format	Binary format of the input restart file.
restart_data_format_output	ini	C*20	value of restart_data_format	Binary format of the output restart file.
restart_time	run	R	9999999.9	Simulated time after which a restart run is to be carried out (in s).
rm	lpm	R(3)	0.05E-6	Parameters of initial aerosol spectrum.
roof_category	usm	I	2	Roof category.
roof_inner _temperature	usm	R	295.0	Inner temperature of roofs.
root_fraction	lsm	R(21)	9999999.9	Root distribution over the four soil layers.
rotor_inertia	wtm	R	34784179.0	Inertia of the rotor (in kg/m2).
rotor_radius	wtm	R(100)	63.0	Radius of the rotor (in m).
rotor_speed	wtm	R(100)	0.9	Initial rotational speed for each turbine (in rad s-1).
roughness_length	ini	R	0.1	Roughness length (in m).
s_surface	ini	R	0.0	Surface value of the passive scalar (in kg m-3 or ppm).
s_surface_initial _change	ini	R	0.0	Change in surface scalar concentration to be made at the beginning of the 3d run (in kg m-3 or ppm).
s_vertical_gradient	ini	R(10)	10*0.0	Scalar concentration gradient(s) of the initial scalar concentration profile (in (kg m-3 or ppm) / 100 m).
s_vertical_gradient _level	ini	R(10)	10*0.0	Height level above which the scalar gradient defined by s_vertical_gradient is effective (in m).
salinity	ocean	L	.T.	Parameter to switch on/off calculation of salinity equation.
salsa_emission_mode	salsa	C(20)	'no_emission'	Source mode for aerosol and gaseous emissions.
sa_surface	ocean	R	35.0	Surface salinity (in psu).
sa_vertical_gradient	ocean	R(10)	10*0.0	Salinity gradient(s) of the initial salinity profile (in psu / 100 m).
sa_vertical_gradient _level	ocean	R(10)	10*0.0	Height level above which the salinity gradient defined by sa_vertical_gradient is effective (in m).
saturation_moisture	lsm	R	depends on soil_type	Soil moisture at saturation (in m³/m³).
scalar_advec	ini	C*10	'ws-scheme'	Advection scheme to be used for the scalar quantities.
scalar_rayleigh _damping	ini	L	.T.	Application of Rayleigh damping to scalars.
scan_radius_agent	agt	R	3.0	Radius around the agent in which it scans for obstacles (in m).
season_z01	salsa	I	1	Modelling season if the dry deposition parametrisation by Zhang et al. 2001 is applied.
section_xy	run	I(100)	no section	Position of cross section(s) for output of 2d horizontal cross sections (grid point index k).
section_xz	run	I(100)	no section	Position of cross section(s) for output of 2d (xz) vertical cross sections (grid point index j).
section_yz	run	I(100)	no section	Position of cross section(s) for output of 2d (yz) vertical cross sections (grid point index i).
seed_follows_topography	lpm	L	.F.	Heights of initial particles are interpreted relative to the given topography.
segment_length_tangential	wtm	R	1.0	Length of each rotor segment the rotor area is divided into, in tangential direction, as factor of the grid spacing.
segment_width_radial	wtm	R	0.5	Length of each rotor segment the rotor area is divided into, in radial direction, as factor of the grid spacing.
side_street_id	chem / salsa	I(99)	0	Index for identifying SIDE streets following street type classes from OpenStreetMap.
sigma_bulk	bulkc	R	2.0	The dispersion of the dry aerosol spectrum.
sigma_rep_agent	agt	R	0.3	Width of agent repulsive field (in m).
sigma_rep_wall	agt	R	0.1	Width of obstacle repulsive field (in m).
sigmag	salsa	R(7)	1.8, 2.16, 2.21, 2.0, 2.0, 2.0, 2.0	The standard deviation of the log-normal aerosol number size distribution per aerosol mode.
skip_time_data_output	run	R	0.0	No data output before this interval has passed (in s).
skip_time_data _output_av	run	R	value of skip_time _data_output	No output of temporally averaged 2d/3d data before this interval has passed (in s).
skip_time_do_lsm	lsm	R	0.0	Time after which the land surface model is switched on.
skip_time_do_radiation	rrtmg	R	0.0	Time after which the radiation model is switched on.
skip_time_do_salsa	salsa	R	0.0	Time after which SALSA is switched on.
skip_time_domask	run	R (max_masks)	max_masks*0.0	No output of masked data before this interval has passed (in s).
skip_time_dopr	run	R	value of skip_time _data_output	No output of vertical profile data before this interval has passed (in s).
skip_time_dosp	spec	R	value of skip_time _data_output	No output of spectra data before this interval has passed (in s).
skip_time_dosurf	surf	R	0.0	No surface data output before this interval has passed (in s).
skip_time_dosurf_av	surf	R	0.0	No surfave data output of averaged variables before this interval has passed (in s).
skip_time_do2d_xy	run	R	value of skip_time _data_output	No output of instantaneous horizontal cross section data before this interval has passed (in s).
skip_time_do2d_xz	run	R	value of skip_time _data_output	No output of instantaneous vertical (xz) cross section data before this interval has passed (in s).
skip_time_do2d_yz	run	R	value of skip_time _data_output	No output of instantaneous vertical (yz) cross section data before this interval has passed (in s).
skip_time_do3d	run	R	value of skip_time _data_output	No output of instantaneous 3d volume data before this interval has passed (in s).
smearing_kernel_size	wtm	R	2.0	Size of the smearing kernel given as multiples of the grid spacing dx.
snow	bulkc	L	.F.	Parameter to turn on prognostic equations of mixing ratio and number concentration for snow aggregates.
soil_inner _temperature	usm	R	288.0	Deep soil temperature.
soil_moisture	lsm	R(21)	21*0.0	Soil moisture distribution over the four soil layers.
soil_temperature	lsm	R(21)	21*9999999.9	Soil temperature distribution over the four soil layers (in K).
soil_type	lsm	I	3	Soil type to be used in the soil model.
spectra_direction	spec	C*2(10)	10*' '	Direction(s) along which spectra are to be calculated.
speed_agl	vfm	R(100)	100*25.0	Horizontal speed of the aircraft above ground level in meter per second.
speed_control	wtm	L	.F.	Parameter to switch on the speed control.
spinup_pt_amplitude	ini	R	0.0	Representative amplitude of the diurnal near-surface temperature variation during the spinup phase.
spinup_pt_mean	ini	R	value of pt_surface	Mean near-surface air temperature during the spinup phase (see spinup_time).
spinup_time	ini	R	0.0	Parameter for steering of the spinup time.
splitting	lpm	L	.F.	Switch on/off the splitting algorithm for cloud droplets (if cloud_droplets=.T.).
splitting_factor	lpm	I	2	This parameter is used for splitting_mode = 'const'. It defines the number into how many partiles one particle is divided.
splitting_factor_max	lpm	I	5	This parameter restricts the splitting_factor to an upper bound.
splitting_function	lpm	C	'gamma'	Parameter to steer splitting algorithm.
splitting_mode	lpm	C	'const'	Parameter to steer splitting algorithm.
start_ice_microphysics	bulkc	R	0.0	Time in seconds after ice microphysicsal processes are calculated.
statistic_regions	ini	I	0	Number of additional user-defined subdomains for which statistical analysis and corresponding output (profiles, time series) shall be made.
step_dealloc	lpm	I	100	Number of timesteps after which particle memory is deallocated.
step_dealloc_mas	agt	I	100	Interval for memory reallocation.
stokes_waveheight	ocean	R	0.0	Parameter to switch on and set the effects of Langmuir circulation in PALM's ocean mode.
stokes_wavelength	ocean	R	0.0	Parameter to switch on and set the effects of Langmuir circulation in PALM's ocean mode.
subs_vertical_gradient	ini	R(10)	10*0.0	Gradient(s) of the profile for the large scale subsidence/ascent velocity (in (m/s) / 100 m).
subs_vertical_gradient _level	ini	R(10)	10*0.0	Height level above which the gradient for the subsidence/ascent velocity defined by subs_vertical_gradient is effective (in m).
sun_in_south	biomet	L	.F.	Azimuthal position of the sun.
surface_aerosol_flux	salsa	R(7)	1.04e+11, 3.23E+10, 5.4E+6, 0.0, 0.0, 0.0, 0.0	The total surface number flux per aerosol mode (in m-2s-1).
surface_cooling _spinup_time	ocean	R	999999.9	Time (in s) after which the surface heat flux is switched off.
surface_csflux	chem	R(99)	0.0	Values of surface fluxes of chemistry emissions to be used in the PARAMETERIZED mode.
surface_csflux_name	chem	C*11(99)	'novalue'	Names of chemical species which are emitted.
surface_heatflux	ini	R	no prescribed heatflux	Kinematic sensible heat flux at the bottom surface (in K m/s).
surface_pressure	ini	R	1013.25	Atmospheric pressure at the surface (in hPa).
surface_reflections	rrtmg	L	.T.	Parameter to switch off the surface-surface reflections in RTM.
surface_scalarflux	ini	R	999999.9	Scalar flux at the surface (in kg m-2 s-1 or ppm m s-1).
surface_type	lsm	C*10	'netcdf'	Surface type classification.
surface_waterflux	ini	R	9999999.9	Kinematic water flux near the surface (in m/s).
svfnorm_report_thresh	rrtmg	R	1E21	Thresholds for reporting of normalization factors in calculation of surface view factors to report.
sw_radiation	rrtmg	L	.T.	Parameter to switch on/off shortwave radiation.
synchronous_exchange	run	L	.F.	Defines how MPI handles the exchange of ghost points.
tau_accel_agent	agt	R	0.5	Relaxation time in social force model (in s).
termination_time_needed	run	R	35.0	CPU time needed for terminal actions at the end of a run in batch mode (in s).
thermal_comfort	biomet	L	.F.	Switch the calculation of all three thermal comfort indices off (.F.) or on (.T.).
tilt_angle	wtm	R	0.0	Rotor tilt_angle of the rotor plane (in degrees).
time_fac_type	chem	C*80	MDH	Type of time treatment for LOD 1 mode of the chem_emission module.
time_turbine_on	wtm	R	0.0	Simulation time at which the turbines are switched on.
timestep_scheme	ini	C*20	'runge-kutta-3'	Time step scheme to be used for integration of the prognostic variables.
tip_loss_correction	wtm	L	.F.	Parameter to switch on the tip loss correction.
to_netcdf	surf	L	.F.	Control parameter enabling surface data output to NetCDF.
to_vtk	surf	L	.F.	Control parameter enabling surface data output to VTK format.
top_csflux	chem	R(99)	0.0
top_heatflux	ini	R	no prescribed heatflux	Kinematic sensible heat flux at the top surface (in K m/s).
top_momentumflux_u	ini	R	no prescribed momentumflux	Momentum flux along x at the top boundary (in m2/s2).
top_momentumflux_v	ini	R	no prescribed momentumflux	Momentum flux along y at the top boundary (in m2/s2).
top_salinityflux	ocean	R	no prescribed salinityflux	Kinematic salinity flux at the top boundary, i.e. the sea surface (in psu m/s).
top_scalarflux	ini	R	no prescribed scalarflux	Scalar flux at the top surface (in kg m-2 s-1 or ppm m s-1).
topography	ini	C*40	'flat'	Topography mode.
topography_grid _convention	ini	C*11	default depends on value of topography	Convention for defining the topography grid.
tower_cd	wtm	R(10000)	1.2	Drag coefficient for each tower. This parameter needs to be specified for each turbine.
tower_diameter	wtm	R(10000)	0.0	Diameter of the tower of the wind turbine used below the rotor. This parameter has to be non-zero if a tower should be included. The parameter needs to be specified for every turbine separately.
trace_fluxes_above	rrtmg	R	-1.0	This parameter enables tracing of values of radiative fluxes in RTM.
transpose_compute _overlap	ini	L	.F.	Parameter to switch on parallel execution of fft and transpositions (with MPI_ALLTOALL).
tunnel_height	ini	R	9999999.9	Height of outer-wall tunnel top.
tunnel_length	ini	R	9999999.9	Length of the tunnel.
tunnel_width_x	ini	R	9999999.9	Tunnel width along x-direction.
tunnel_width_y	ini	R	9999999.9	Tunnel width along y-direction.
tunnel_wall_depth	ini	R	max( dx, dy, dz )	Depth of tunnel walls.
turbulent_inflow	ini	L	.F.	Generates a turbulent inflow at side boundaries using a turbulence recycling method.
turbulent_outflow	ini	L	.F.	Generates a turbulent outflow at side boundaries using a turbulence recycling method.
turn_to_sun	biomet	L	.T.	Orientation of the front/face of the human model.
u_bulk	ini	R	0.0	u-component of the predefined bulk velocity (in m/s).
u_profile	ini	R(100)	100 * 9999999.9	Values of u-velocity component to be used as initial profile (in m/s).
ug_surface	ini	R	0.0	u-component of the geostrophic wind at the surface (in m/s).
ug_vertical_gradient	ini	R(10)	10*0.0	Gradient(s) of the initial profile of the u-component of the geostrophic wind (in 1/100s).
ug_vertical_gradient _level	ini	R(10)	10*0.0	Height level above which the gradient defined by ug_vertical_gradient is effective (in m).
unlimited_dimension	lpm	L	.T.
unscheduled_radiation_calls	rrtmg	L	.F.	Parameter to allow additional calls of the radiation code.
use_fixed_date	ini	L	.F.	Use a fixed calendar day during the entire simulation.
use_fixed_time	ini	L	.F.	Use a fixed time of day during the entire simulation.
use_free_convection _scaling	ini	L	.F.	Parameter to switch on the use of the local free convection velocity scale.
use_sgs_for_particles	lpm	L	.F.	Use subgrid-scale velocities for particle advection.
use_subsidence _tendencies	ini	L	.F.	Parameter to choose the calculation method of subsidence in case of runs with large scale forcing.
use_surface_fluxes	ini	L	.F.	Parameter to steer the treatment of the subgrid-scale vertical fluxes within the diffusion terms at k=1 (bottom boundary).
use_top_fluxes	ini	L	.F.	Parameter to steer the treatment of the subgrid-scale vertical fluxes within the diffusion terms at k=nz (top boundary).
use_ug_for_galilei_tr	ini	L	.T.	Switch to determine the translation velocity in case that a Galilean transformation is used.
use_upstream _for_tke	ini	L	.F.	Parameter to choose the advection/timestep scheme to be used for the subgrid-scale TKE.
usm_wall_mod	usm	L	.F.	Wall conductivity reduction.
uv_exposure	biomet	L	.F.	Activation of the UV Exposure Model.
uv_heights	ini	R(100)	100 * 9999999.9	Height levels for prescribed u,v-profiles (in m).
v_bulk	ini	R	0.0	v-component of the predefined bulk velocity (in m/s).
v_profile	ini	R(100)	100 * 9999999.9	Values of v-velocity component to be used as initial profile (in m/s).
van_der_waals_coagc	salsa	L	.F.	Parameter to switch on the van der Waals forces when calculating the collision kernel in the coagulation subroutine.
vdi_checks	ini	L	.F.	Switch the internal controls according to VDI 3783 Part 9 on.
vegetation_coverage	lsm	R	depends on vegetation_type	Vegetation coverage of the surface.
vegetation_type	lsm	I	2	Vegetation type to be used in the land surface model.
ventilation_effect	bulkc	L	.T.	Parameterize ventilation effect on evaporation of raindrops.
vertical_particle _advection	lpm	L	.T.	Switch on/off vertical particle transport.
vg_surface	ini	R	0.0	v-component of the geostrophic wind at the surface (in m/s).
vg_vertical_gradient	ini	R(10)	10*0.0	Gradient(s) of the initial profile of thev-component of the geostrophic wind (in 1/100s).
vg_vertical_gradient _level	ini	R(10)	10*0.0	Height level above which the gradient defined by vg_vertical_gradient is effective (in m).
vm_time_start	vmm	R	0.0	Start time of the virtual measurements.
wall_adjustment	ini	L	.T.	Parameter to restrict the mixing length in the vicinity of the bottom boundary (and near vertical walls of a non-flat topography).
wall_category	usm	I	2	Wall category.
wall_csflux	chem	R(99,6)	0.0
wall_heatflux	ini	R(6)	6*0.0	Prescribed kinematic sensible heat flux in K m/s at the five topography faces.
wall_humidityflux	ini	R(6)	6*0.0	Prescribed kinematic humidity flux in m/s at the five topography faces.
wall_inner_temperature	usm	R	295.0	Inner wall temperature.
wall_salinityflux	ocean	R(6)	6*0.0	Prescribed kinematic salinity flux in Psu m/s at the six topography faces
wall_scalarflux	ini	R(6)	6*0.0	Prescribed scalar flux at the five topography faces (in kg m-2 s-1 or ppm m s-1).
water_temperature	lsm	R	depends on water_type	Water temperature (K), by default constant during the entire run.
water_type	lsm	I	1	Water type classification according to the following list.
wave_breaking	ocean	L	.F.	Parameter to switch on turbulence generation by wave breaking.
weight_factor_merge	lpm	R	0.5 * initial_weight_factor	Threshold for merging of super droplets.
weight_factor_split	lpm	R	0.1 * initial_weight_factor	For splitting_mode='const' a critical weighting factor must be prescribed.
wilting_point	lsm	R	depends on soil_type	Soil moisture at permanent wilting point (in m³/m³).
window_inner_temperature	usm	R	295.0	Inner window temperature.
write_particle _statistics	lpm	L	.F.	Switch on/off output of particle information.
x_end	vfm	R(100)	100*999999999.0	End-position of the flight leg along x in meter.
x_start	vfm	R(100)	100*999999999.0	Start-position of the flight leg along x in meter.
y_end	vfm	R(100)	100*999999999.0	End-position of the flight leg along y in meter.
y_start	vfm	R(100)	100*999999999.0	Start-position of the flight leg along y in meter.
yaw_angle	wtm	R(10000)	0.0	Yaw angle for each turbine in degrees. A positive yaw means a rotation of the rotor in clockwise direction within the xy-plane.
yaw_control	wtm	L	.F.	Parameter to switch on the yaw controller.
yaw_misalignment_max	wtm	R	0.08726	Maximum tolerated yaw misalignment (in rad).
yaw_misalignment_min	wtm	R	0.008726	Minimum yaw misalignment for which the actuator stops (in rad).
yaw_speed	wtm	R	0.005236	Speed of the yaw actuator (in rad/s).
y_shift	ini	I	0	Distance of y-shift for cyclic and non-cyclic boundary conditions (in number of PEs).
z0_pavement	lsm	R	depends on pavement_type	Roughness length for momentum for pavement surface types.
z0_vegetation	lsm	R	depends on vegetation_type	Roughness length for momentum for vegetation surface types.
z0_water	lsm	R	depends on water_type	Roughness length for momentum for water surface types.
z0h_pavement	lsm	R	depends on pavement_type	Roughness length for heat for pavement surface types.
z0h_vegetation	lsm	R	depends on vegetation_type	Roughness length for heat for vegetation surface types.
z0h_water	lsm	R	depends on water_type	Roughness length for heat for water surface types.
z0q_pavement	lsm	R	depends on pavement_type	Roughness length for moisture for pavement surface types.
z0q_vegetation	lsm	R	depends on vegetation_type	Roughness length for moisture for vegetation surface types.
z0q_water	lsm	R	depends on water_type	Roughness length for moisture for water surface types.
zeta_max	ini	R	20.0	Upper limit of the stability parameter zeta = z_mo/L.
zeta_min	ini	R	-20.0	Lower limit of the stability parameter zeta = z_mo/L.