Show simple item record

dc.contributor.authorBjoland, Lindis Merete
dc.contributor.authorBelyey, Vasyl
dc.contributor.authorLøvhaug, Unni Pia
dc.contributor.authorLa Hoz, Cesar
dc.date.accessioned2016-09-28T11:13:46Z
dc.date.available2016-09-28T11:13:46Z
dc.date.issued2016-09-13
dc.description.abstractIncoherent scatter radar measurements are an important source for studies of ionospheric plasma parameters. In this paper the EISCAT Svalbard radar (ESR) long-term database is used to evaluate the International Reference Ionosphere (IRI) model. The ESR started operations in 1996, and the accumulated database up to 2012 thus covers 16 years, giving an overview of the ionosphere in the polar cap and cusp during more than one solar cycle. Data from ESR can be used to obtain information about primary plasma parameters: electron density, electron and ion temperature, and line-of-sight plasma velocity from an altitude of about 50 and up to 1600 km. Monthly averages of electron density and temperature and ion temperature and composition are also provided by the IRI model from an altitude of 50 to 2000 km. We have compared electron density data obtained from the ESR with the predicted electron density from the IRI-2016 model. Our results show that the IRI model in general fits the ESR data well around the F2 peak height. However, the model seems to underestimate the electron density at lower altitudes, particularly during winter months. During solar minimum the model is also less accurate at higher altitudes. The purpose of this study is to validate the IRI model at polar latitudes.en_US
dc.description.sponsorshipEISCAT is an international association supported by research organizations in China (CRIRP), Finland (SA), Japan (NIPR and STEL), Norway (NFR), Sweden (VR) and the United Kingdom (NERC).en_US
dc.identifier.citationBjoland, L. M., Belyey, V., Løvhaug, U.P. & La Hoz, C. (2016). An evaluation of International Reference Ionosphere electron density in the polar cap and cusp using EISCAT Svalbard radar measurements. <i>Annales Geophysicae, 34</i>, 751–758.en_US
dc.identifier.cristinIDFRIDAID 1386142
dc.identifier.doi10.5194/angeo-34-751-2016
dc.identifier.issn0992-7689
dc.identifier.issn1432-0576
dc.identifier.urihttps://hdl.handle.net/10037/9756
dc.language.isoengen_US
dc.publisherEuropean Geosciences Unionen_US
dc.relation.ispartofBjoland, L.M. (2018). Radar studies of plasma parameters in the polar cap and the auroral zone (Doctoral thesis). <a href=https://hdl.handle.net/10037/31573>https://hdl.handle.net/10037/31573</a>.
dc.rights.accessRightsopenAccess
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Rom- og plasmafysikk: 437en_US
dc.subjectIonosphere (polar ionosphere)en_US
dc.titleAn evaluation of International Reference Ionosphere electron density in the polar cap and cusp using EISCAT Svalbard radar measurementsen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


File(s) in this item

Thumbnail

This item appears in the following collection(s)

Show simple item record