A treatment of the Zeeman effect using Stokes formalism and its implementation in the Atmospheric Radiative Transfer Simulator (ARTS)
Journal article, 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



R. Larsson

Luleå University of Technology

S.A. Buehler

Luleå University of Technology

Patrick Eriksson

Chalmers, Earth and Space Sciences, Global Environmental Measurements and Modelling

J. Mendrok

Luleå University of Technology

Journal of Quantitative Spectroscopy and Radiative Transfer

0022-4073 (ISSN)

Vol. 133 445-453

Driving Forces

Sustainable development

Subject Categories

Meteorology and Atmospheric Sciences

Other Natural Sciences


Basic sciences



More information

Latest update