#DEFINITIONS:  -*-sh-*-
#
############
# General ARTS defaults
#
# The basic philosophy here is, that general.arts shall always be included by an
# ARTS controlfile. general.arts contains such settings, which are (very often)
# necessary, but on the other hand the user rarely wants/needs to reset (or is
# discouraged to do so).
# The settings done below can be divided into 3 categories:
# 1) settings that serve (mainly) as initialisations
# 2) settings the user is highly discouraged to change
# 3) settings that define some meaningful, widely valid/applicable defaults
#
############
#
# Authors: Stefan Buehler, Patrick Eriksson, Oliver Lemke, Jana Mendrok
#


Arts2 {

############
# PART 1 - following settings serve (mainly) as initialisations
############

#
# Initialize verbosity levels
#
verbosityInit


#
# No particle/scattering species (yet)
#
ParticleSpeciesSet( part_species, [] )
MatrixSet( particle_masses, [] )


#
# Some methods can use simplified scatteirng data, but deactivated as default
#
FlagOff( use_mean_scat_data )


#
# Default is that no transmitter is involved
#
MatrixSet( transmitter_pos, [] )


#
# Default assmption is that the sensor cause no Doppler effect
#
NumericSet( rte_alonglos_v, 0 )


#
# No auxiliary variables as default
#
ArrayOfStringSet( iy_aux_vars, [] )


# 
# Wind and magnetic fields
# (all components set to be empty, shorthand for no winds/magnetic/pnd field)
#
Tensor3SetConstant( wind_u_field, 0, 0, 0, 0.0 )
Tensor3SetConstant( wind_v_field, 0, 0, 0, 0.0 )
Tensor3SetConstant( wind_w_field, 0, 0, 0, 0.0 )
Tensor3SetConstant( mag_u_field, 0, 0, 0, 0.0 )
Tensor3SetConstant( mag_v_field, 0, 0, 0, 0.0 )
Tensor3SetConstant( mag_w_field, 0, 0, 0, 0.0 )


############
# PART 2 - following settings are highly recommended to be NOT changed
############

#
# Set default interpolation orders for absorption lookup table. Do not
# mess with these values, unless you know what you are doing! 
#
IndexSet( abs_p_interp_order,   5 )
IndexSet( abs_t_interp_order,   7 )
IndexSet( abs_nls_interp_order, 5 )

# abs_f_interp_order should normally be set to 0. However, if you are doing
# calculations with Doppler shift (e.g., wind, planet rotation, or satellite
# movement considered in forward calculation), you NEED to set it to >=l. This
# regardless of whether you use absorption lookup tables or on-the-fly
# calculation of absorption. In case of on-the-fly it will have no practical
# effects. In case of lookup tables, you should choose abs_f_interp_order
# depending on the frequency interpolation scheme you want.
IndexSet( abs_f_interp_order, 0 )

#
# Variable for calculation of propagation paths:
#
# You should not change the value of ppath_inside_cloudbox_do, if you don't 
# know exactly what you are doing!)
FlagOff( ppath_inside_cloudbox_do )



############
# PART 3 - following settings define some meaningful defaults
############

#
# Default output format
#
output_file_formatSetAscii


#
# No unit conversion 
#
StringSet( iy_unit, "1" )

#
# Batch calculations start at index 0 by default
#
IndexSet( ybatch_start, 0 )


#
# Lineshape function
#
# These should be the most accurate settings:
# Kuntz implementation of the Voigt function, 
# Van-Vleck and Huber normalization factor,
# cutoff at 750 GHz, consistent with Clough and Rosenkranz
#
abs_lineshapeDefine( shape="Voigt_Kuntz6",
                     forefactor="VVH",
                     cutoff=750e9 )


#
# Variables for calculation of propagation paths:
#
# The value for ppath_lmax of 10e3 is OK for limb sounding, and 
# also for down-looking if not very accurate results are demanded.
#
NumericSet( ppath_lmax, 10e3 )
#
# The value for ppath_lraytrace of 1e3 should be OK in general for passive
# observation, but lower values are needed for simulating radio links
#
NumericSet( ppath_lraytrace, 1e3 )


#
# MC
#
IndexSet( mc_min_iter, 100 )


#
# Line Mixing Data
#
# These are okay to be empty if no line mixing species is present.
# They have to exist because they're input to abs_xsec_per_speciesAddLines.
# If a line mixing species is added, a later check will make sure
# the data is initialized properly.
#
Touch( line_mixing_data )
Touch( line_mixing_data_lut )

}