Middle- and High-Latitude Mesosphere and Lower Thermosphere Mean Winds and Tides in Response to Strong Polar-Night Jet Oscillations

dc.bibliographicCitation.firstPage9262eng
dc.bibliographicCitation.issue16eng
dc.bibliographicCitation.journalTitleJournal of geophysical research (JGR) : Atmosphereseng
dc.bibliographicCitation.lastPage9276eng
dc.bibliographicCitation.volume124eng
dc.contributor.authorConte, J. Federico
dc.contributor.authorChau, Jorge L.
dc.contributor.authorPeters, Dieter H.W.
dc.date.accessioned2021-08-19T12:38:08Z
dc.date.available2021-08-19T12:38:08Z
dc.date.issued2019
dc.description.abstractThe dynamical behavior of the mesosphere and lower thermosphere (MLT) region during strongly disturbed wintertime conditions commonly known as polar-night jet oscillations (PJOs) is described in detail and compared to other wintertime conditions. For this purpose, wind measurements provided by two specular meteor radars located at Andenes (69°N, 16°E) and Juliusruh (54°N, 13°E) are used to estimate horizontal mean winds and tides as an observational basis. Winds and tidal main features are analyzed and compared for three different cases: major sudden stratospheric warming (SSW) with (a) strong PJO event, (b) non-PJO event, and (c) no major SSWs. We show that the distinction into strong PJOs, non-PJOs, and winters with no major SSWs is better suited to identify differences in the behavior of the mean winds and tides during the boreal winter. To assess the impact of the stratospheric disturbed conditions on the MLT region, we investigate the 30-year nudged simulation by the Extended Canadian Middle Atmosphere Model. Analysis of geopotential height disturbances suggests that changes in the location of the polar vortex at mesospheric heights are responsible for the jets observed in the MLT mean winds during strong PJOs, which in turn influence the evolution of semidiurnal tides by increasing or decreasing their amplitudes depending on the tidal component. © 2019. The Authors.eng
dc.description.fondsLeibniz_Fonds
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/6539
dc.identifier.urihttps://doi.org/10.34657/5586
dc.language.isoengeng
dc.publisherHoboken, NJ : Wileyeng
dc.relation.doihttps://doi.org/10.1029/2019JD030828
dc.relation.essn2156-2202
dc.relation.essn2169-8996
dc.relation.issn0148-0227
dc.relation.issn2169-897X
dc.rights.licenseCC BY-NC-ND 4.0 Unportedeng
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/eng
dc.subject.ddc550eng
dc.subject.otherExt-CMAM30eng
dc.subject.othermeteor radareng
dc.subject.otherMLTeng
dc.subject.otherPJOeng
dc.subject.otherpolar vortexeng
dc.subject.othersolar tideseng
dc.titleMiddle- and High-Latitude Mesosphere and Lower Thermosphere Mean Winds and Tides in Response to Strong Polar-Night Jet Oscillationseng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccesseng
wgl.contributorIAPeng
wgl.subjectGeowissenschafteneng
wgl.typeZeitschriftenartikeleng
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