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Authors: Spinetti, C.* 
Corradini, S.* 
Carboni, E.* 
Thomas, G.* 
Grainger, R.* 
Buongiorno, M.F.* 
Title: Mt. Etna Volcanic Aerosol and Ash Retrievals using MERIS and AATSR Data
Issue Date: Sep-2008
Keywords: Volcanic aerosol
Volcanic ash
Mt. Etna
Envisat data
Subject Classification01. Atmosphere::01.01. Atmosphere::01.01.07. Volcanic effects 
04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous 
Abstract: Envisat MERIS and AATSR data have been acquired in the framework of the Eurorisk-Preview project. The project addresses European civil protections and proposes to develop, at the European scale, new information services to support the risk management. In Italy one of the most important natural risks is due to the presence of volcanoes. Mt. Etna in Sicily, displays persistent activity, periodically interrupted by eruptions, which emit volcanic aerosol and ash to different altitudes in troposphere affecting the central Mediterranean area. In order to test the use of MERIS and AATSR data to derive emitted particles parameters as optical depth, effective radius and the ash mass of particles, the already developed remote sensing techniques has been adapted. MERIS and AATSR data acquired during the Mt. Etna 2002-2003 volcanic eruption has been chosen. The use of VIS and TIR bands of the two sensor demonstrates the potential to derive useful information on plume particles and to monitor the volcanic plume during eruption if frequent and high resolution data is available in near real time.
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