An empirical orthogonal function model of total electron content over China

作     者：Tian Mao,Weixing Wan,Xinan Yue,Lingfeng Sun,Biqiang Zhao, and Jianpeng Guo, 1 Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,China. 2 National Center for Space Weather,China Meteorological Administration, Beijing,China. 3 Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences,Wuhan,China. 4 Graduate School of Chinese Academy of Sciences,Beijing,China. 

会议名称：《中国科学院地质与地球物理研究所2008学术年会》

会议日期：2009年

学科分类：070802[理学-空间物理学] 07[理学] 0708[理学-地球物理学] 

基　　金：supported by the KIP Pilot Project(kzcx3-sw-144) of CAS National Science Foundation of China(40636032) National Important Basic Research Project(2006CB806306) 

摘      要：[1]In this paper a climatology model of total electron content(TEC) over China has been developed on the basis of the empirical orthogonal function(EOF) analysis using Global Positioning System(GPS) data from the International Global Navigation Satellite System Service(IGS) and Crust Movement Observation Network of China(CMONOC) covering almost the whole Chinese sector during *** model well represents observational data with mean bias of -0.00994 TECU(1 TECU = 1.0×10 el·m) and standard deviation of 5.42 *** the EOF model and IRI have been used in three-dimensional variational(3DVAR) data assimilation experiments separately,and results reveal that the ability of assimilation nowcasting for the EOF model is better as it provides a more authentic background.