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Title: A Fabry–Perot interferometer-based camera for two-dimensional mapping of SO2 distributions
Authors: Vogel, Leif H. H.
Kuhn, J.
Bobrowski, N.
Lübcke, P.
Platt, U.
First Published: 10-Nov-2014
Publisher: Copernicus Publications on behalf of the European Geosciences Union
Citation: Atmospheric Measurement Techniques, 2014, 7, pp. 3705-3715
Abstract: We examine a new imaging method for the remote sensing of volcanic gases, which relies on the regularly spaced narrow-band absorption structures in the UV–VIS of many molecules. A Fabry–Perot interferometer (FPI) is used to compare the scattered sunlight radiance at wavelengths corresponding to absorption bands with the radiance at wavelengths in between the bands, thereby identifying and quantifying the gas. In this first theoretical study, we present sample calculations for the detection of sulfur dioxide (SO[subscript: 2]). Optimum values for the FPI setup parameters are proposed. Furthermore, the performance of the FPI method is compared to SO[subscript: 2] cameras. We show that camera systems using an FPI are far less influenced by changes in atmospheric radiative transfer (e.g., due to aerosol) and have a great potential as a future technique for examining emissions of SO[subscript: 2] (or other gases) from volcanic sources and other point sources.
DOI Link: 10.5194/amt-7-3705-2014
ISSN: 1867-8548
eISSN: 1867-8548
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © the authors, 2014. This is an open-access article distributed under the terms of the Creative Commons Attribution License ( ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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