Ionospheric variations during January 2009 stratospheric sudden warming

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dc.contributor.authorGoncharenko, L.
dc.contributor.authorCoster, A.
dc.contributor.authorRideout, W.
dc.contributor.authorChau Chong Shing, Jorge Luis
dc.contributor.authorLiu, H. -L.
dc.contributor.authorValladares, C. E.
dc.date.accessioned2018-11-15T18:04:54Z
dc.date.available2018-11-15T18:04:54Z
dc.date.issued2009
dc.description.abstractThe stratospheric sudden warming peaking in January 2009 was the strongest and most prolonged on record. We report significant ionospheric variations is association with this event, which are especially pronounced at low latitudes. Large increase in the vertical drifts is observed at Jicamarca, displaying 12-hour signature with upward drifts in the morning hours and downward drifts in the afternoon hours, with pattern persisting for several days. Analysis of GPS TEC data indicates that variations in electron density are observed in a large range of longitudes and latitudes. The entire daytime ionosphere is affected, with morning increase in low-latitude TEC exceeding 100% of the mean value, and afternoon decrease in TEC approaching ~50% of the mean value. These variations are consistent with ionospheric disturbances observed during other stratospheric warming events. We suggest the observed phenomena is related to planetary waves, which have a high amplitude level prior to the stratospheric warmings. Interaction of planetary waves with tides and modulation of tides can lead to changes in the low-latitude electric field through the wind dynamo process, which in turn is responsible for a largescale redistribution of ionospheric electron density.es_ES
dc.description.sponsorshipMIT Haystack Observatory; NCAR -Boston Universityes_ES
dc.formatapplication/pdfes_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/3638
dc.language.isoenges_ES
dc.publisherInstituto GeofĂ­sico del PerĂșes_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttps://creativecommons.org/licences/by/4.0/es_ES
dc.subjectIonospherees_ES
dc.subjectSeasonal variationses_ES
dc.subjectStratospherees_ES
dc.subjectElectron densityes_ES
dc.subjectElectronses_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.00es_ES
dc.titleIonospheric variations during January 2009 stratospheric sudden warminges_ES
dc.typeinfo:eu-repo/semantics/conferenceObjectes_ES

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