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Improvement of Global Ionospheric TEC Derivation with Multi-Source Data in Modip Latitude
Fu, Weizheng1,2; Ma, Guanyi1,3; Lu, Weijun1,3; Maruyama, Takashi4; Li, Jinghua1; Wan, Qingtao1; Fan, Jiangtao1; Wang, Xiaolan1
2021-04-01
Source PublicationATMOSPHERE
Volume12Issue:4Pages:15
AbstractGlobal ionospheric total electron content (TEC) is generally derived with ground-based Global Navigation Satellite System (GNSS) observations based on mathematical models in a solar-geomagnetic reference frame. However, ground-based observations are not well-distributed. There is a lack of observations over sparsely populated areas and vast oceans, where the accuracy of TEC derivation is reduced. Additionally, the modified dip (modip) latitude is more suitable than geomagnetic latitude for the ionosphere. This paper investigates the improvement of global TEC with multi-source data and modip latitude, and a simulation with International Reference Ionosphere (IRI) model is developed. Compared with using ground-based observations in geomagnetic latitude, the mean improvement was about 10.88% after the addition of space-based observations and the adoption of modip latitude. Nevertheless, the data from JASON-2 satellite altimetry and COSMIC occultation are sparsely-sampled, which makes the IRI TEC a reasonable estimation for the areas without observation. By using multi-source data from ground-based, satellite-based and IRI-produced observations, global TEC was derived in both geomagnetic and modip latitudes for 12 days of four seasons in 2014 under geomagnetic quiet conditions. The average root-mean-square error (RMSE) of the fitting was reduced by 7.02% in modip latitude. The improvement was largest in March and smallest in June.
Keywordglobal ionospheric derivation total electron content (TEC) multi-source data modip latitude
Funding OrganizationNational Key Research Program of China `Collaborative Precision Positioning Project' ; National Key Research Program of China `Collaborative Precision Positioning Project' ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Program of China `Collaborative Precision Positioning Project' ; National Key Research Program of China `Collaborative Precision Positioning Project' ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Program of China `Collaborative Precision Positioning Project' ; National Key Research Program of China `Collaborative Precision Positioning Project' ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Program of China `Collaborative Precision Positioning Project' ; National Key Research Program of China `Collaborative Precision Positioning Project' ; National Natural Science Foundation of China ; National Natural Science Foundation of China
DOI10.3390/atmos12040434
WOS KeywordTOTAL ELECTRON-CONTENT ; INSTRUMENTAL BIASES ; SATELLITE ALTIMETRY ; MAPS ; GNSS ; VTEC ; VARIABILITY
Language英语
Funding ProjectNational Key Research Program of China `Collaborative Precision Positioning Project'[2016YFB0501900] ; National Natural Science Foundation of China[11873064] ; National Natural Science Foundation of China[12073049] ; National Natural Science Foundation of China[U2031146]
Funding OrganizationNational Key Research Program of China `Collaborative Precision Positioning Project' ; National Key Research Program of China `Collaborative Precision Positioning Project' ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Program of China `Collaborative Precision Positioning Project' ; National Key Research Program of China `Collaborative Precision Positioning Project' ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Program of China `Collaborative Precision Positioning Project' ; National Key Research Program of China `Collaborative Precision Positioning Project' ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research Program of China `Collaborative Precision Positioning Project' ; National Key Research Program of China `Collaborative Precision Positioning Project' ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences
WOS IDWOS:000642727100001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/78120
Collection中国科学院国家天文台
Corresponding AuthorMa, Guanyi
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
2.Kyoto Univ, Res Inst Sustainable Humanosphere, Uji, Kyoto 6110011, Japan
3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
4.Natl Inst Informat & Commun Technol, Tokyo 1838795, Japan
Recommended Citation
GB/T 7714
Fu, Weizheng,Ma, Guanyi,Lu, Weijun,et al. Improvement of Global Ionospheric TEC Derivation with Multi-Source Data in Modip Latitude[J]. ATMOSPHERE,2021,12(4):15.
APA Fu, Weizheng.,Ma, Guanyi.,Lu, Weijun.,Maruyama, Takashi.,Li, Jinghua.,...&Wang, Xiaolan.(2021).Improvement of Global Ionospheric TEC Derivation with Multi-Source Data in Modip Latitude.ATMOSPHERE,12(4),15.
MLA Fu, Weizheng,et al."Improvement of Global Ionospheric TEC Derivation with Multi-Source Data in Modip Latitude".ATMOSPHERE 12.4(2021):15.
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