ARTS built-in documentation server

Workspace Variable y_unit

Unit for spectral values returned by radiative transfer methods.

The basic unit is determined by the definition of background
radiation and atmospheric and surface source terms. The standard
choices give radiances in unit of [W/m2/Hz/sr]. This variable
allows conversion to other units.

Please note that there is no way for ARTS to check the actual unit
of a spectral value. In principle, the unit can differ between the
elements. The user must makes sure that any unit conversion is
applied correctly, and in accordance with the calibration of the
instrument of concern. Note especially that the brightness
temperature of pure Stokes elements is obtained with a common power
reference. In short, the ratio is Q/I is not changed by the
conversion (beside a non-linear effect for PlanckBT). This in
contrast to Iv and other single "measurement" single polarisation
componenets, where a Tb of e.g. Iv=200K corresponds to half of the
power for I=200K (total power). See further the documentation.
See y_pol for defined polarisation componenets.

Possible choices are:
 "1"             : No conversion.
 "RJBT"          : Conversion to Rayleigh-Jean brightness temperature.
 "PlanckBT"      : Conversion to Planck brightness temperature.
 "W/(m^2 m sr)"  : Conversion to [W/(m^2 m sr)] (radiance per wavelength unit).
 "W/(m^2 m-1 sr)": Conversion to [W/(m^2 m-1 sr)] (radiance per wavenumber unit).

Usage: Set by the user.

Group: String

Specific methods that can generate y_unit

none

Generic and supergeneric methods that can generate y_unit

Specific methods that require y_unit

Generic and supergeneric methods that can use y_unit

Agendas that can generate y_unit

none

Agendas that require y_unit

none