Satellite-based detection of volcanic sulphur dioxide from recent eruptions in Central and South America

D. Loyola, J. van Geffen, P. Valks, T. Erbertseder, M. Van Roozendael, W. Thomas, W. Zimmer, K. Wißkirchen
2008 Advances in Geosciences  
<p><strong>Abstract.</strong> Volcanic eruptions can emit large amounts of rock fragments and fine particles (ash) into the atmosphere, as well as several gases, including sulphur dioxide (SO<sub>2</sub>). These ejecta and emissions are a major natural hazard, not only to the local population, but also to the infrastructure in the vicinity of volcanoes and to aviation. Here, we describe a methodology to retrieve quantitative information about volcanic SO<sub>2</sub> plumes from satellite-borne
more » ... om satellite-borne measurements in the UV/Visible spectral range. The combination of a satellite-based SO<sub>2</sub> detection scheme and a state-of-the-art 3D trajectory model enables us to confirm the volcanic origin of trace gas signals and to estimate the plume height and the effective emission height. This is demonstrated by case-studies for four selected volcanic eruptions in South and Central America, using the GOME, SCIAMACHY and GOME-2 instruments.</p>
doi:10.5194/adgeo-14-35-2008 fatcat:7uqg2phlhzeeriyweycbo7474q