A conjugate study of the polar ionospheric 2-layer and IRI-2007 at 75? magnetic latitude for solar minimum

HE Fang; ZHANG BeiChen; Joran Moen; HUANG DeHong

doi:10.3724/SP.J.1085.2011.00175

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RESEARCH-ARTICLE

A conjugate study of the polar ionospheric 2-layer and IRI-2007 at 75? magnetic latitude for solar minimum

HE Fang

,1, ZHANG BeiChen1, Joran Moen2, HUANG DeHong1

Correspondence: hefang@pric.org.cn ORCID:

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Vol. 22, Issue 3, pp. 175-183 (2011) • DOI

First published at: Jan 25, 2011

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Abstract

Long-duration conjugate observations by the EISCAT Svalbard Radar (ESR) and the ionosonde at Zhongshan station from the International Polar Year (IPY) during solar minimum conditions are analyzed, with respect to variability in the F2-layer peak parameters. A comparison between International Reference Ionosphere- 2007 (IRI-2007) and observation data clearly demonstrates good agreement in summer, but greater deviations in winter. The IRI model reproduces the F2 peak parameters dominated by solar photoionization reasonably well, but it does not address the effect of electron precipitation. Hence, the discrepancies become large in the winter auroral ionosphere.

Keywords

Solar minimum; polar ionosphere; IRI; electron precipitation

Author Address:

1. SOA Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, China;
2. Department of Physics, University of Oslo, Norway

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