Estimating along-track plasma drift speed from electron density measurements by the three Swarm satellites

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dc.contributor.authorPark, J.en
dc.contributor.authorLuehr, H.en
dc.contributor.authorStolle, Claudiaen
dc.contributor.authorMalhotra, G.en
dc.contributor.authorBaker, Joseph B. H.en
dc.contributor.authorBuchert, S.en
dc.contributor.authorGill, R.en
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2019-10-17T13:36:30Zen
dc.date.available2019-10-17T13:36:30Zen
dc.date.issued2015en
dc.description.abstractPlasma convection in the high-latitude ionosphere provides important information about magnetosphere-ionosphere-thermosphere coupling. In this study we estimate the along-track component of plasma convection within and around the polar cap, using electron density profiles measured by the three Swarm satellites. The velocity values estimated from the two different satellite pairs agree with each other. In both hemispheres the estimated velocity is generally anti-sunward, especially for higher speeds. The obtained velocity is in qualitative agreement with Super Dual Auroral Radar Network data. Our method can supplement currently available instruments for ionospheric plasma velocity measurements, especially in cases where these traditional instruments suffer from their inherent limitations. Also, the method can be generalized to other satellite constellations carrying electron density probes.en
dc.description.notesThe authors thank the reviewer, who gave very constructive comments. The European Space Agency (ESA) is acknowledged for providing the Swarm data and for financially supporting the work described in this paper (ESA/ESTEC contract no. 4000102140/10/NL/JA). The Swarm data used here are the preliminary LP data (data identifier: SW_PREL_EFIx_LP_1B) freely accessible at https://earth.esa.int/web/guest/swarm/data-access. J. Park was partially supported by the "Planetary system research for space exploration" project, the basic research funding from KASI, and the Air Force Research Laboratory, under agreement number FA2386-14-1-4004. G. Malhotra and J. B. H. Baker acknowledge support from the US National Science Foundation under grant AGS-1150879 and ATM-0946900.en
dc.description.sponsorshipEuropean Space Agency (ESA) (ESA/ESTEC) [4000102140/10/NL/JA]; "Planetary system research for space exploration" project; KASI; Air Force Research Laboratory [FA2386-14-1-4004]; US National Science FoundationNational Science Foundation (NSF) [AGS-1150879, ATM-0946900]en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.5194/angeo-33-829-2015en
dc.identifier.eissn1432-0576en
dc.identifier.issn0992-7689en
dc.identifier.issue7en
dc.identifier.urihttp://hdl.handle.net/10919/94616en
dc.identifier.volume33en
dc.language.isoenen
dc.publisherEuropean Geosciences Unionen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectIonosphereen
dc.subjectPlasma convectionen
dc.titleEstimating along-track plasma drift speed from electron density measurements by the three Swarm satellitesen
dc.title.serialAnnales Geophysicaeen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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