Vertical Shears of Horizontal Winds in the Lower Thermosphere Observed by ICON

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dc.contributor.authorEngland, Scott L.en
dc.contributor.authorEnglert, Christoph R.en
dc.contributor.authorHarding, Brian J.en
dc.contributor.authorTriplett, Colin C.en
dc.contributor.authorMarr, Kennethen
dc.contributor.authorHarlander, John M.en
dc.contributor.authorSwenson, Gary R.en
dc.contributor.authorMaute, Astriden
dc.contributor.authorImmel, Thomas J.en
dc.date.accessioned2022-11-21T15:11:17Zen
dc.date.available2022-11-21T15:11:17Zen
dc.date.issued2022-06-16en
dc.description.abstractVertical shears of horizontal winds play an important role in the dynamics of the upper atmosphere. Prior observations have indicated that these shears predominantly occur in the lower thermosphere. MIGHTI observations from the Ionospheric Connection Explorer indicate that strong wind shears are a common feature of the lower thermosphere between 100-130 km, varying greatly between orbits. This work focuses on these strong shears, and examines their occurrences, horizontal scales and underlying organization. The wind shears can persist for 1000s km horizontally. Over a large data set, no preferred direction for the strong wind shears is found. The shears that persist for a short horizontal extent are slightly larger in amplitude and more numerous than those that persist across large horizontal scales. The altitude at which the strongest shears occur, regardless of the horizontal extent, show a downward progression with local time, following the climatological winds and upward propagating tides.en
dc.description.notesICON is supported by NASA's Explorers Program through contracts NNG12FA45C and NNG12FA42I and NASA Grant NNX14AP03G. The National Center for Atmospheric Research is sponsored by the National Science Foundation. The authors acknowledge support from the International Space Science Institute through the International Team "An Exploration of the Valley Region in the Low Latitude Ionosphere: Response to Forcing from Below and Above and Relevance to Space Weather."en
dc.description.sponsorshipNASA [NNG12FA45C, NNG12FA42I, NNX14AP03G]; National Science Foundation; International Space Science Institute through the International Team "An Exploration of the Valley Region in the Low Latitude Ionosphereen
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1029/2022GL098337en
dc.identifier.eissn1944-8007en
dc.identifier.issn0094-8276en
dc.identifier.issue11en
dc.identifier.othere2022GL098337en
dc.identifier.urihttp://hdl.handle.net/10919/112686en
dc.identifier.volume49en
dc.language.isoenen
dc.publisherAmerican Geophysical Unionen
dc.rightsCreative Commons Attribution-NonCommercial 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/en
dc.subjectthermosphereen
dc.subjecthorizontal windsen
dc.subjectwind shearsen
dc.subjecttidesen
dc.titleVertical Shears of Horizontal Winds in the Lower Thermosphere Observed by ICONen
dc.title.serialGeophysical Research Lettersen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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