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dc.contributor.authorStray, Nora Henriette
dc.contributor.authorEspy, Patrick Joseph
dc.contributor.authorLimpasuvan, Varavut
dc.contributor.authorHibbins, Robert
dc.date.accessioned2019-07-17T13:44:44Z
dc.date.available2019-07-17T13:44:44Z
dc.date.created2015-01-28T13:26:11Z
dc.date.issued2015
dc.identifier.citationJournal of Atmospheric and Solar-Terrestrial Physics. 2015, 127, 30-36.nb_NO
dc.identifier.issn1364-6826
dc.identifier.urihttp://hdl.handle.net/11250/2605685
dc.description.abstractObservations of planetary wave (PW) activity in the northern hemisphere, polar summer mesosphere and lower thermosphere (MLT) are presented. Meteor winds from a northern hemisphere chain of SuperDARN radars have been used to monitor the meridional wind along a latitude band (51–66°N) in the MLT. A stationary PW-like longitudinal structure with a strong zonal PW number 1 characteristic is persistently observed year-to-year during summer. Here we characterize the amplitude and the phase structure of this wave in the MLT. The Modern-Era Retrospective Analysis for Research and Application (MERRA) of the NASA Global Modelling and Assimilation Office has been used to evaluate possible sources of the observed longitudinal perturbation in the mesospheric meridional wind by investigating the amplitudes and phases of PWs in the underlying atmosphere. The investigation shows that neither gravity wave modulation by lower atmospheric PWs nor direct propagation of PWs from the lower atmosphere are a significant cause of the observed longitudinal perturbation. However, the data are not of sufficient scope to investigate longitudinal differences in gravity wave sources, or to separate the effects of instabilities and inter-hemispheric propagation as possible causes for the large PW present in the summer MLT.nb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.titleCharacterisation of quasi-stationary planetary waves in the Northern MLT during summernb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber30-36nb_NO
dc.source.volume127nb_NO
dc.source.journalJournal of Atmospheric and Solar-Terrestrial Physicsnb_NO
dc.identifier.doi10.1016/j.jastp.2014.12.003
dc.identifier.cristin1209772
dc.relation.projectNorges forskningsråd: 223252nb_NO
dc.description.localcodeCopyright © 2014 Elsevier Ltd. All rights reserved.This article will not be available due to copyright restrictionsnb_NO
cristin.unitcode194,66,20,0
cristin.unitnameInstitutt for fysikk
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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