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Volcanic SO2 by UV-TIR satellite retrievals: Validation by using ground-based network at Mt. Etna

dc.contributor.authorSpinetti, C.
dc.contributor.authorSalerno, G.G.
dc.contributor.authorCaltabiano, T.
dc.contributor.authorCarboni, E.
dc.contributor.authorClarisse, L.
dc.contributor.authorCorradini, S.
dc.contributor.authorGrainger, R.G.
dc.contributor.authorHedelt, P.A.
dc.contributor.authorKoukouli, M.E.
dc.contributor.authorMerucci, L.
dc.contributor.authorSiddans, R.
dc.contributor.authorTampellini, L.
dc.contributor.authorTheys, N.
dc.contributor.authorValks, P.
dc.contributor.authorZehner, C.
dc.date2014
dc.date.accessioned2016-08-31T11:03:58Z
dc.date.available2016-08-31T11:03:58Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/4277
dc.descriptionMt. Etna volcano in Italy is one of the most active degassing volcanoes worldwide, emitting a mean of 1.7 Mt/year of Sulphur Dioxide (SO2) in quiescent periods. In this work, SO2 measurements retrieved by Moderate Resolution Imaging Spectroradiometer (MODIS), hyper-spectral Infrared Atmospheric Sounding Interferometer (IASI) and the second Global Ozone Monitoring Experiment (GOME-2) data are compared with the ground-based data from the FLux Automatic MEasurement monitoring network (FLAME). Among the eighteen lava fountain episodes occurring at Mt. Etna in 2011, the 10 April paroxysmal event has been selected as a case-study for the simultaneous observation of the SO2 cloud by satellite and ground-based sensors. For each data-set two retrieval techniques were adopted and the measurements of SO2 mass and flux with their respective uncertainty were obtained. With respect to the FLAME SO2 mass of 4.5 Gg, MODIS, IASI and GOME-2 differ by about 10%, 15% and 30%, respectively. The SO2 flux correlation coefficient between MODIS and FLAME is 0.84. All the retrievals within the respective errors are in agreement with the ground-based measurements supporting the validity of these space measurements.
dc.languageeng
dc.titleVolcanic SO2 by UV-TIR satellite retrievals: Validation by using ground-based network at Mt. Etna
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freedegassing
dc.subject.freeerror analysis
dc.subject.freeGOME
dc.subject.freeground-based measurement
dc.subject.freeIASI
dc.subject.freeMODIS
dc.subject.freesatellite data
dc.subject.freesulfur dioxide
dc.subject.freevolcanic gas
dc.subject.freevolcanology
dc.subject.freeCatania [Sicily]
dc.subject.freeEtna
dc.subject.freeItaly
dc.subject.freeSicily
dc.source.titleAnnals of Geophysics
dc.source.volume57
dc.source.issueFastTrack2
Orfeo.peerreviewedYes
dc.identifier.doi10.4401/ag-6641
dc.identifier.scopus2-s2.0-84940882368


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