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Hamburg 2009 – wissenschaftliches Programm

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UP: Fachverband Umweltphysik

UP 10: Poster: Umweltphysik

UP 10.23: Poster

Donnerstag, 5. März 2009, 17:48–19:00, VMP 9 Poster

Observations of volcanic SO2 using GOME-2 measurements — •Andreas Richter, Folkard Wittrock, and John P. Burrows — Institute of Environmental Physics, University of Bremen, Bremen, Germany

Volcanic activity is a large source of emission of trace gases and aerosols into the atmosphere, both during explosive eruptions and through degassing. In particular volcanic eruptions can produce large plumes of SO2 that, depending on injection altitude, can be transported over large distances. As the SO2 plume is often close to ash and both are dangerous for air traffic, fast detection of SO2 plumes is of interest for aviation control.

Using the strong UV absorption bands of SO2, it can be detected in satellite measurements of the scattered solar flux. Using the well known DOAS technique, SO2 emissions from several volcanic eruptions in 2007 and 2008 have been investigated using measurements from the GOME-2 instrument on board of MetOp. The emphasis is on estimating the total amount of SO2 emitted and evaluating the applicability of the measurements for fast volcanic alerts to air traffic control.

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