کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1764991 | 1020079 | 2013 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Validate the IRI2007 model by the COSMIC slant TEC data during the extremely solar minimum of 2008 Validate the IRI2007 model by the COSMIC slant TEC data during the extremely solar minimum of 2008](/preview/png/1764991.png)
During 2008, the solar activity is extremely low. The satellite observations show that the ionospheric height and electron density is much lower than the predictions by the international reference ionosphere (IRI) model. In this paper, we compared the slant total electron content (TEC) observed by the COSMIC satellites during 2008 with the IRI model results. It is found that the IRI model with IRI2001 and IRI2001 Cor. topside options will always overestimate the electron density in both lower and higher altitudes. But the rest two topside options (NeQuick, and TTS) tend to overestimate the electron density in the F layer and underestimate it in the topside altitudes. The switch altitude between overestimation and underestimation and the latitude-local time distribution of the model deviation depend on the topside option. The current investigation might be useful for the model improvement as well as data assimilation work based on the IRI model and the LEO TEC data.
Journal: Advances in Space Research - Volume 51, Issue 4, 15 February 2013, Pages 647–653