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First satellite detection of volcanic OClO after the eruption of Puyehue-Cordón Caulle

dc.contributor.authorTheys, N.
dc.contributor.authorDe Smedt, I.
dc.contributor.authorVan Roozendael, M.
dc.contributor.authorFroidevaux, L.
dc.contributor.authorClarisse, L.
dc.contributor.authorHendrick, F.
dc.date2014
dc.date.accessioned2016-03-25T09:42:09Z
dc.date.available2016-03-25T09:42:09Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/2821
dc.descriptionVolcanoes release large amounts of halogen species such as HCl and HBr, which can be converted into reactive halogens by heterogeneous photochemical reactions that are currently not fully characterized. Here we report on the first satellite detection of volcanic chlorine dioxide (OClO). Measurements were performed using the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography instrument for the ash-laden plume emitted after the 2011 eruption of Puyehue-Cordón Caulle in Chile. We also identified volcanic BrO using the Ozone Monitoring Instrument, as well as enhanced HCl in data of the Microwave Limb Sounder instrument. These observations suggest that OClO was formed in the plume by the ClO + BrO reaction in presence of a large excess of ClO. The present satellite data set could help better understand reactive halogen chemistry in volcanic plumes and its impact on atmospheric composition.
dc.languageeng
dc.titleFirst satellite detection of volcanic OClO after the eruption of Puyehue-Cordón Caulle
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freeeruption
dc.subject.freehalogens
dc.subject.freemeasurement
dc.subject.freesatellite
dc.subject.freevolcano
dc.source.titleGeophysical Research Letters
dc.source.volume41
dc.source.issue2
dc.source.page667-672
Orfeo.peerreviewedYes
dc.identifier.doi10.1002/2013GL058416
dc.identifier.scopus2-s2.0-84892698897


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