Heidelberg 2015 – scientific programme

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UP: Fachverband Umweltphysik

UP 3: Meßtechnik

UP 3.3: Talk

Wednesday, March 25, 2015, 18:00–18:15, G/gHS

A Fabry-Perot interferometer-based Camera for SO₂ detection — •Jonas Kuhn¹, Nicole Bobrowski¹, Peter Lübcke¹, Denis Pöhler¹, Jan-Lukas Tirpitz¹, Leif Vogel², and Ulrich Platt¹ — ¹Institute of Environmental Physics, University of Heidelberg, Heidelberg, Germany — ²Earth Observation Science, Space Research Centre, University of Leicester, Leicester, UK

The SO₂ camera is becoming an established tool for measuring two-dimensional SO₂ column density distributions at volcanoes with a high temporal resolution. Transport and dilution processes are visualized and SO₂ emission fluxes can be determined on a very short timescale. However, these major advantages go together with a simplified identification principle that is far less accurate than conventional remote sensing trace gas measurements with only one viewing direction. By using a Fabry-Perot interferometer in a new camera design, the SO₂ selectivity and sensitivity can be improved substantially. We present first laboratory measurements of a one pixel prototype of a Fabry-Perot interferometer-based SO₂ camera. In addition, different possible implementations of an imaging device are proposed.