An evaluation of International Reference Ionosphere electron density in the polar cap and cusp using EISCAT Svalbard radar measurements
Incoherent 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...
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ftunivtroemsoe:oai:munin.uit.no:10037/9756 2023-11-12T04:16:36+01:00 An evaluation of International Reference Ionosphere electron density in the polar cap and cusp using EISCAT Svalbard radar measurements Bjoland, Lindis Merete Belyey, Vasyl Løvhaug, Unni Pia La Hoz, Cesar 2016-09-13 https://hdl.handle.net/10037/9756 https://doi.org/10.5194/angeo-34-751-2016 eng eng European Geosciences Union Bjoland, L.M. (2018). Radar studies of plasma parameters in the polar cap and the auroral zone (Doctoral thesis). https://hdl.handle.net/10037/31573 . Bjoland, 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. Annales Geophysicae, 34 , 751–758. FRIDAID 1386142 doi:10.5194/angeo-34-751-2016 0992-7689 1432-0576 https://hdl.handle.net/10037/9756 openAccess VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Rom- og plasmafysikk: 437 Ionosphere (polar ionosphere) Journal article Tidsskriftartikkel Peer reviewed 2016 ftunivtroemsoe https://doi.org/10.5194/angeo-34-751-2016 2023-10-18T23:07:50Z Incoherent 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. Article in Journal/Newspaper EISCAT Svalbard University of Tromsø: Munin Open Research Archive Svalbard Annales Geophysicae 34 9 751 758 |
institution |
Open Polar |
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University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Rom- og plasmafysikk: 437 Ionosphere (polar ionosphere) |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Rom- og plasmafysikk: 437 Ionosphere (polar ionosphere) Bjoland, Lindis Merete Belyey, Vasyl Løvhaug, Unni Pia La Hoz, Cesar An evaluation of International Reference Ionosphere electron density in the polar cap and cusp using EISCAT Svalbard radar measurements |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Fysikk: 430::Rom- og plasmafysikk: 437 Ionosphere (polar ionosphere) |
description |
Incoherent 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. |
format |
Article in Journal/Newspaper |
author |
Bjoland, Lindis Merete Belyey, Vasyl Løvhaug, Unni Pia La Hoz, Cesar |
author_facet |
Bjoland, Lindis Merete Belyey, Vasyl Løvhaug, Unni Pia La Hoz, Cesar |
author_sort |
Bjoland, Lindis Merete |
title |
An evaluation of International Reference Ionosphere electron density in the polar cap and cusp using EISCAT Svalbard radar measurements |
title_short |
An evaluation of International Reference Ionosphere electron density in the polar cap and cusp using EISCAT Svalbard radar measurements |
title_full |
An evaluation of International Reference Ionosphere electron density in the polar cap and cusp using EISCAT Svalbard radar measurements |
title_fullStr |
An evaluation of International Reference Ionosphere electron density in the polar cap and cusp using EISCAT Svalbard radar measurements |
title_full_unstemmed |
An evaluation of International Reference Ionosphere electron density in the polar cap and cusp using EISCAT Svalbard radar measurements |
title_sort |
evaluation of international reference ionosphere electron density in the polar cap and cusp using eiscat svalbard radar measurements |
publisher |
European Geosciences Union |
publishDate |
2016 |
url |
https://hdl.handle.net/10037/9756 https://doi.org/10.5194/angeo-34-751-2016 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
EISCAT Svalbard |
genre_facet |
EISCAT Svalbard |
op_relation |
Bjoland, L.M. (2018). Radar studies of plasma parameters in the polar cap and the auroral zone (Doctoral thesis). https://hdl.handle.net/10037/31573 . Bjoland, 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. Annales Geophysicae, 34 , 751–758. FRIDAID 1386142 doi:10.5194/angeo-34-751-2016 0992-7689 1432-0576 https://hdl.handle.net/10037/9756 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.5194/angeo-34-751-2016 |
container_title |
Annales Geophysicae |
container_volume |
34 |
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9 |
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751 |
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