Spatial Distribution Variations of Ionospheric Electron Density Based on COSMIC Data
Ma Xinxin
Lin Zhan
Chen Huaran
Jin Honglin
Liu Xiaocan
Jiao Liguo
Abstract：Space-based GPS detection can provide the global distribution, high accuracy, high vertical resolution of the ionosphere observation data, compensate for the problem of regional restriction and low vertical resolution in ground-based GPS detection.To enrich the relevant research, this study analyses the spatial distribution variation of electron density based on COSMIC occultation data from 2008-2011 by statistical method.Results show that electron density is dominated by the EIA and WSA.With the solar activity enhancement, EIA extends into the middle latitudes from 250km to 350km height range, and WSA occurs not only in summer of the southern hemisphere, but also in spring and autumn there while electron density values during night time are greater than those during daytime from 300km to 500km height range;The electron density has obvious WSA phenomenon from 250km to 500km height range.And with the solar activity enhancement, the geographic range of abnormal regional expands.
Keywords：geophysicsionosphereelectron densityEAIWSA
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 479-484 )