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Aerosol properties of the Eyjafjallajökull ash derived from sun photometer and satellite observations over the Iberian Peninsula
de Frutos, A.M.; Clarisse, L.; González Castanedo, Y.; Baldasano Recio, José María; Wagner, F.; Estelles, Victor; Obregón, M.A.; Lyamani, H.; Toledano, C.; Bennouna, Y; Cachorro, V.; de Galisteo, O.J.P.; Stohl, A.; Stebel, K.; Kristiansen, N.I.; Olmo, F. J.
Universitat Politècnica de Catalunya. Departament de Projectes d'Enginyeria
The Eyjafjallajökull ash that crossed over Spain and Portugal on 6e12 May 2010 has been monitored bya set of operational sun photometer sites within AERONET-RIMA and satellite sensors. The sunphotometer observations (aerosol optical depth, coarse mode concentrations) and ash products from IASIand SEVIRI satellite sensors, together with FLEXPART simulations of particle transport, allow identifyingthe volcanic aerosols. The aerosol columnar properties derived from inversions were investigated,indicating specific properties, especially regarding the absorption. The single scattering albedo was high(0.95 at 440 nm) and nearly wavelength independent, although with slight decrease with wavelength.Other parameters, like the fine mode fraction of the volume size distributions (0.20e0.80) or the portionof spherical particles (15e90%), were very variable among the sites and indicated that the various ashclouds were inhomogeneous with respect to particle size and shape.
Àrees temàtiques de la UPC::Desenvolupament humà i sostenible::Degradació ambiental::Contaminació atmosfèrica
Àrees temàtiques de la UPC::Enginyeria electrònica i telecomunicacions::Optoelectrònica
Aerosols -- Environmental aspects
Remote sensing
Aerosols -- Aspectes ambientals
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