A treatment of the Zeeman effect using Stokes formalism and its implementation in the Atmospheric Radiative Transfer Simulator (ARTS)
Artikel i vetenskaplig tidskrift, 2014

This paper presents the practical theory that was used to implement the Zeeman effect using Stokes formalism in the Atmospheric Radiative Transfer Simulator (ARTS). ARTS now treats the Zeeman effect in a general manner for several gas species for all polarizations and takes into account variations in both magnetic and atmospheric fields along a full 3D geometry. We present how Zeeman splitting affects polarization in radiative transfer simulations and find that the effect may be large in Earth settings for polarized receivers in limb observing geometry. We find that not taking a spatially varying magnetic field into account can result in absolute errors in the measurement vector of at least 10K in Earth magnetic field settings. The paper also presents qualitative tests for O2 lines against previous models (61.15GHz line) and satellite data from Odin-SMR (487.25GHz line), and the overall consistency between previous models, satellite data, and the new ARTS Zeeman module seems encouraging.

Stokes formalism

Atmospheric radiative transfer

Zeeman effect

Polarization

Författare

R. Larsson

Luleå tekniska universitet

S.A. Buehler

Luleå tekniska universitet

Patrick Eriksson

Chalmers, Rymd- och geovetenskap, Global miljömätteknik och modellering

J. Mendrok

Luleå tekniska universitet

Journal of Quantitative Spectroscopy and Radiative Transfer

0022-4073 (ISSN)

Vol. 133 445-453

Drivkrafter

Hållbar utveckling

Ämneskategorier

Meteorologi och atmosfärforskning

Annan naturvetenskap

Fundament

Grundläggande vetenskaper

DOI

10.1016/j.jqsrt.2013.09.006

Mer information

Senast uppdaterat

2018-05-14