6533b7d2fe1ef96bd125e158

RESEARCH PRODUCT

Aerosol properties of the Eyjafjallajökull ash derived from sun photometer and satellite observations over the Iberian Peninsula

Kerstin StebelVictor EstellésYasmine BennounaNina Iren KristiansenHassan LyamaniVictoria E. CachorroM.a. ObregónJ. P. Ortiz De GalisteoF.j. OlmoJosé María BaldasanoYolanda González-castanedoYolanda González-castanedoLieven ClarisseCarlos ToledanoA. M. De FrutosFrank WagnerAndreas Stohl

subject

Aerosols -- Environmental aspectsAtmospheric SciencegeographyAerosols -- Aspectes ambientalsgeography.geographical_feature_categoryTeledeteccióSingle-scattering albedoFotometria:Enginyeria electrònica::Optoelectrònica [Àrees temàtiques de la UPC]Remote sensingAtmospheric sciencesAerosolSun photometerPhotometryWavelengthMeteorologyVolcanoEnvironmental scienceSatelliteMeteorologiaParticle sizeAbsorption (electromagnetic radiation)General Environmental ScienceRemote sensing:Desenvolupament humà i sostenible::Degradació ambiental::Contaminació atmosfèrica [Àrees temàtiques de la UPC]

description

The Eyjafjallajökull ash that crossed over Spain and Portugal on 6e12 May 2010 has been monitored by a set of operational sun photometer sites within AERONET-RIMA and satellite sensors. The sun photometer observations (aerosol optical depth, coarse mode concentrations) and ash products from IASI and SEVIRI satellite sensors, together with FLEXPART simulations of particle transport, allow identifying the 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 portion of spherical particles (15e90%), were very variable among the sites and indicated that the various ash clouds were inhomogeneous with respect to particle size and shape.

http://hdl.handle.net/2117/16090