Very low ozone episodes due to polar vortex displacement

dc.bibliographicCitation.firstPage1123
dc.bibliographicCitation.issue4eng
dc.bibliographicCitation.journalTitleTellus B: Chemical and Physical Meteorologyeng
dc.bibliographicCitation.lastPage1137
dc.bibliographicCitation.volume52
dc.contributor.authorJames, P.M.
dc.contributor.authorPeters, D.
dc.contributor.authorWaugh, D.W.
dc.date.accessioned2018-03-17T04:22:34Z
dc.date.available2019-06-26T17:22:08Z
dc.date.issued2000
dc.description.abstractThe large-scale ozone distribution over the northern hemisphere undergoes strong fluctuationseach winter on timescales of up to a few weeks. This is closely linked to changes in the stratosphericpolar vortex, whose shape, intensity and location vary with time. Elliptical diagnosticparameters provide an empirical description of the daily character of the polar vortex. Theseparameters are used as an objective measure to define two characteristic wintertime vortexdisplacements, towards northern Europe and Canada, respectively. The large-scale structuresin both the stratosphere and troposphere and the 3D ozone structures are determined for bothvortex displacement scenarios. A linear ozone transport model shows that the contribution ofhorizontal ozone advection dominates locally in the middle stratosphere. Nevertheless, thelargest contribution is due to vertical advection around the ozone layer maximum. The findingsare in agreement with an EOF analysis which reveals significant general modes of ozone variabilitylinked to polar vortex displacement and to phase-shifted large-scale tropospheric waves.When baroclinic waves travel through the regions of vortex-related ozone reduction, the combinedeffect is to produce transient synoptic-scale areas of exceptionally low ozone; namelydynamically induced strong ozone mini-holes.eng
dc.description.versionpublishedVersioneng
dc.formatapplication/pdf
dc.identifier.urihttps://doi.org/10.34657/1386
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/915
dc.language.isoengeng
dc.publisherMilton Park : Taylor & Franciseng
dc.relation.doihttps://doi.org/10.3402/tellusb.v52i4.17089
dc.rights.licenseCC BY 4.0 Unportedeng
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/eng
dc.subject.ddc550eng
dc.subject.otherdisplacementeng
dc.subject.otherNorthern Hemisphereeng
dc.subject.otherozoneeng
dc.subject.otherpolar vortexeng
dc.subject.otherstratosphereeng
dc.subject.otherwintereng
dc.titleVery low ozone episodes due to polar vortex displacementeng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccesseng
wgl.contributorIAPeng
wgl.subjectGeowissenschafteneng
wgl.typeZeitschriftenartikeleng
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