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dc.contributor.authorvan der Meeren, Christer
dc.contributor.authorOksavik, Kjellmar
dc.contributor.authorLorentzen, Dag Arne
dc.contributor.authorRietveld, Michael T
dc.contributor.authorClausen, Lasse Boy Novock
dc.date.accessioned2022-06-10T10:43:02Z
dc.date.available2022-06-10T10:43:02Z
dc.date.issued2015-12-01
dc.description.abstractIn this paper we study how GPS, GLONASS, and Galileo navigation signals are compromised by strong irregularities causing severe phase scintillation (σϕ>1) in the nightside high-latitude ionosphere during a substorm on 3 November 2013. Substorm onset and a later intensification coincided with polar cap patches entering the auroral oval to become auroral blobs. Using Global Navigation Satellite Systems (GNSS) receivers and optical data, we show severe scintillation driven by intense auroral emissions in the line of sight between the receiver and the satellites. During substorm expansion, the area of scintillation followed the intense poleward edge of the auroral oval. The intense auroral emissions were colocated with polar cap patches (blobs). The patches did not contain strong irregularities, neither before entering the auroral oval nor after the aurora had faded. Signals from all three GNSS constellations were similarly affected by the irregularities. Furthermore, two receivers spaced around 120km apart reported highly different scintillation impacts, with strong scintillation on half of the satellites in one receiver and no scintillation in the other. This shows that areas of severe irregularities in the nightside ionosphere can be highly localized. Amplitude scintillations were low throughout the entire interval.en_US
dc.identifier.citationvan der Meeren C, Oksavik K, Lorentzen DA, Rietveld MT, Clausen LBN. Severe and localized GNSS scintillation at the poleward edge of the nightside auroral oval during intense substorm aurora. Journal of Geophysical Research (JGR): Space Physics. 2015;120(12):10607-10621en_US
dc.identifier.cristinIDFRIDAID 1317260
dc.identifier.doi10.1002/2015JA021819
dc.identifier.issn2169-9380
dc.identifier.issn2169-9402
dc.identifier.urihttps://hdl.handle.net/10037/25446
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalJournal of Geophysical Research (JGR): Space Physics
dc.relation.urihttp://onlinelibrary.wiley.com/doi/10.1002/2015JA021819/pdf
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2015 The Author(s)en_US
dc.titleSevere and localized GNSS scintillation at the poleward edge of the nightside auroral oval during intense substorm auroraen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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