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A New Global Ionospheric Electron Density Model Based on Grid Modeling Method

文献类型：期刊论文

作者Le, Huijun1,2,3,6; Han, Tingwei1,3,6; Li, Qiaoling4; Liu, Libo1,2,3,6; Chen, Yiding1,3,5,6; Zhang, Hui1,2,3,6
刊名SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS
出版日期2022-06-01
卷号20期号:6页码:18
关键词ionosphere modeling empirical model global ionospheric model
DOI10.1029/2021SW002992
英文摘要Based on nearly 4.6 million radio occultation (RO) ionospheric profile data from Constellation Observing System for Meteorology, Ionosphere, and Climate satellites in 2006-2020, a global three-dimensional ionospheric electron density model was constructed with a new concept. The global 3D ionosphere structure was divided into total 338,661 grids with longitude intervals of 10 degrees, latitude intervals of 2 degrees, and height intervals of 5 km. On each grid, the electron density is modeled as a function of solar activity, geomagnetic activity, local time, and season variation using 21 coefficients. Then all grid models are combined to form a global ionospheric model. This method makes full use of all ionospheric electron density data. The spatial resolution of the model is high with 10 degrees in longitude, 2 degrees in latitude, and 5 km in height, which can effectively model the fine ionospheric spatial structure like the longitudinal wavenumber-4 structure in low latitudes. The model also takes into account the influence of both solar and geomagnetic activities on the ionosphere. At the altitude below the F2 peak, the RO electron density observation suffers from an artificial meridional maximum between the double peaks of the equatorial ionization anomaly, referred hereafter as the three-peak error. By combining our model with the International Reference Ionospheric electron density results of the E layer below 140 km, the problem of three-peak error is effectively solved. Compared the with other data sources such as the ZH01 and the ROCSAT-1, the modeling ability of model in fine spatial structure is verified.
WOS关键词OCCULTATION OBSERVATIONS ; SOLAR ; VALIDATION ; MIDDLE ; NMF2
资助项目B-type Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; National Key Research and Development Program[2018YFC1503504] ; National Natural Science Foundation of China[41822403] ; National Natural Science Foundation of China[41774165] ; Youth Innovation Promotion Association CAS
WOS研究方向Astronomy & Astrophysics ; Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000805048200001
出版者AMER GEOPHYSICAL UNION
资助机构B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; National Key Research and Development Program ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; National Key Research and Development Program ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; National Key Research and Development Program ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; National Key Research and Development Program ; National Key Research and Development Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS
源URL[http://ir.iggcas.ac.cn/handle/132A11/106060]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Le, Huijun
作者单位1.Chinese Acad Sci, Key Lab Earth & Planetary Phys, Inst Geol & Geophys, Beijing, Peoples R China
2.Chinese Acad Sci, Mohe Natl Geophys Observ, Inst Geol & Geophys, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
4.Shandong Univ, Sch Space Sci & Phys, Shandong Key Lab Opt Astron & Solar Terr Environm, Inst Space Sci, Weihai, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing, Peoples R China
6.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Le, Huijun,Han, Tingwei,Li, Qiaoling,et al. A New Global Ionospheric Electron Density Model Based on Grid Modeling Method[J]. SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS,2022,20(6):18.
APA Le, Huijun,Han, Tingwei,Li, Qiaoling,Liu, Libo,Chen, Yiding,&Zhang, Hui.(2022).A New Global Ionospheric Electron Density Model Based on Grid Modeling Method.SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS,20(6),18.
MLA Le, Huijun,et al."A New Global Ionospheric Electron Density Model Based on Grid Modeling Method".SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS 20.6(2022):18.

入库方式： OAI收割

来源：地质与地球物理研究所

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