A conjugate study of the polar ionospheric F2-layer and IRI-2007 at 75 ° magnetic latitude for solar minimum  

作　　者：HE Fang ZHANG BeiChen JoranMoen HUANG DeHong 

机构地区：[1]SOA Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, China [2]Department of Physics, University of Oslo, Norway

出　　处：《Advances in Polar Science》2011年第3期175-183,共9页极地科学进展（英文版）

基　　金：supported by the youth fund of the State Oceanic Administration, People's Republic of China (Grant no.2010614);the Polar Strategic Research Foundation of China (Grant no.20100201);the Public Science and Technology Research Funds Projects of Ocean (Grant no.201005017);the National Natural Science Foundation of China (Grant no.40874082,40890164);the National Basic Research Program of China (Grant no.2010CB950503-06)

摘　　要：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 F2-1ayer 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.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 F2-1ayer 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.

关 键 词：Solar minimum polar ionosphere IRI electron precipitation 

分 类 号：P353.7[天文地球—空间物理学] U416.206[天文地球—地球物理学]