IGGCAS OpenIR  > 地球与行星物理院重点实验室
A New Global Ionospheric Electron Density Model Based on Grid Modeling Method
Le, Huijun1,2,3,4; Han, Tingwei1,2,4; Li, Qiaoling5; Liu, Libo1,2,3,4; Chen, Yiding1,2,4,6; Zhang, Hui1,2,3,4
2022-06-01
Source PublicationSPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS
Volume20Issue:6Pages:18
AbstractBased 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.
Keywordionosphere modeling empirical model global ionospheric model
DOI10.1029/2021SW002992
Funding OrganizationB-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
WOS KeywordOCCULTATION OBSERVATIONS ; SOLAR ; VALIDATION ; MIDDLE ; NMF2
Language英语
Funding ProjectB-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
Funding OrganizationB-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
WOS Research AreaAstronomy & Astrophysics ; Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences
WOS SubjectAstronomy & Astrophysics ; Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences
WOS IDWOS:000805048200001
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/106060
Collection地球与行星物理院重点实验室
Corresponding AuthorLe, Huijun
Affiliation1.Chinese Acad Sci, Key Lab Earth & Planetary Phys, Inst Geol & Geophys, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Mohe Natl Geophys Observ, Inst Geol & Geophys, Beijing, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
5.Shandong Univ, Sch Space Sci & Phys, Shandong Key Lab Opt Astron & Solar Terr Environm, Inst Space Sci, Weihai, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing, Peoples R China
Recommended Citation
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.
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