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Workspace Method propmat_clearskyAddFaraday

Description

Calculates absorption matrix describing Faraday rotation.

Faraday rotation is a change of polarization state of an
electromagnetic wave propagating through charged matter by
interaction with a magnetic field. Hence, this method requires
abs_species to contain 'free_electrons' and electron content field
(as part of vmr_field) as well as magnetic field (mag_u_field,
mag_v_field, mag_w_field) to be specified.

Faraday rotation affects Stokes parameters 2 and 3 (but not
intensity!). Therefore, this method requires stokes_dim>2.

Like all 'propmat_clearskyAdd*' methods, the method is additive,
i.e., does not overwrite the propagation matrix propmat_clearsky,
but adds further contributions.

Authors: Patrick Eriksson

Synopsis

propmat_clearskyAddFaraday(

propmat_clearsky, stokes_dim, atmosphere_dim, f_grid, abs_species, rtp_vmr, rtp_los, rtp_mag )

Variables

OUT+IN	propmat_clearsky	(Tensor4)	This contains the absorption coefficients for one point in the atmosphere (one set of pressure, temperature, magnetic field, and VMR values).
IN	stokes_dim	(Index)	The dimensionality of the Stokes vector (1-4).
IN	atmosphere_dim	(Index)	The atmospheric dimensionality (1-3).
IN	f_grid	(Vector)	The frequency grid for monochromatic pencil beam calculations.
IN	abs_species	(ArrayOfArrayOfSpeciesTag)	Tag groups for scalar gas absorption.
IN	rtp_vmr	(Vector)	Absorption species abundances for radiative transfer calculations.
IN	rtp_los	(Vector)	Line-of-sight at a radiative transfer point.
IN	rtp_mag	(Vector)	Magnetic field at a radiative transfer point.