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Extreme events in total ozone over the Northern mid-latitudes: an analysis based on long-term data setsfrom five European ground-based stations

dc.contributor.authorRieder, H.E.
dc.contributor.authorJancso, L.M.
dc.contributor.authorDi Rocco, S.
dc.contributor.authorStaehelin, J.
dc.contributor.authorMaeder, J.A.
dc.contributor.authorMathieu Ribatet, T.P.
dc.contributor.authorDavison, A.C.
dc.contributor.authorDe Backer, H.
dc.contributor.authorKoehler, U.
dc.contributor.authorKrzyścin, J.
dc.contributor.authorVaníček, K.
dc.coverage.temporal21st century
dc.date2011
dc.date.accessioned2016-03-07T16:17:07Z
dc.date.accessioned2021-12-09T09:54:26Z
dc.date.available2016-03-07T16:17:07Z
dc.date.available2021-12-09T09:54:26Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/8905
dc.descriptionWe apply methods from extreme value theory to identify extreme events in high (termed EHOs) and low (termed ELOs) total ozone and to describe the distribution tails (i.e. very high and very low values) of five long-term European ground-based total ozone time series. The influence of these extreme events on observed mean values, long-term trends and changes is analysed. The results show a decrease in EHOs and an increase in ELOs during the last decades, and establish that the observed downward trend in column ozone during the 1970–1990s is strongly dominated by changes in the frequency of extreme events. Furthermore, it is shown that clear ‘fingerprints’ of atmospheric dynamics (NAO, ENSO) and chemistry [ozone depleting substances (ODSs), polar vortex ozone loss] can be found in the frequency distribution of ozone extremes, even if no attribution is possible from standard metrics (e.g. annual mean values). The analysis complements earlier analysis for the world's longest total ozone record at Arosa, Switzerland, confirming and revealing the strong influence of atmospheric dynamics on observed ozone changes. The results provide clear evidence that in addition to ODS, volcanic eruptions and strong/moderate ENSO and NAO events had significant influence on column ozone in the European sector.
dc.languageeng
dc.publisherIRM
dc.publisherKMI
dc.publisherRMI
dc.relation.ispartofseriesTellus (2011), 63B,
dc.titleExtreme events in total ozone over the Northern mid-latitudes: an analysis based on long-term data setsfrom five European ground-based stations
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceGeneral Public
dc.audienceScientific
dc.subject.freeOzone
dc.subject.freeArosa
dc.subject.freeSwitserland
dc.subject.freeatmosphere
dc.subject.freevolcanic eruptions
dc.subject.freeEurope
dc.source.issueTellus (2011), 63B,
dc.source.page860–874
Orfeo.peerreviewedNot pertinent


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