IGGCAS OpenIR  > 地球与行星物理院重点实验室
High-Resolution and Accurate Low-Latitude Gridded Electron Density Generation and Evaluation
He, Jianhui1,2,3; Yue, Xinan1,2,3; Le, Huijun1,2,3; Ren, Zhipeng1,2,3; Ding, Feng1,2,3
2022-04-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
ISSN2169-9380
Volume127Issue:4Pages:15
AbstractThe accurate specification of three-dimensional (3-D) ionosphere states is crucial to positioning, navigation, and communication systems, especially in low-latitude and equatorial regions. In this work, the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC-2) radio occultation total electron content was assimilated around a whole year from October 2020 to September 2021 via the Kalman filter (KF) data assimilation system. This system includes an empirical ionosphere background model and the KF data assimilation algorithm. Accurate 3-D ionosphere data assimilation results were produced hourly with spatial resolutions of 2 degrees latitude, 5 degrees longitude, and 20 km height in low-latitude and equatorial regions. First, the results were validated by Massachusetts Institute of Technology vertical total electron content and global ionosonde data. The ionosphere vertical total electron content and the critical frequency at the F2 layer agree well with the independent observations. Then, a general ionosphere climatological pattern is found in the reconstructed 3D ionosphere results, including seasonal variation, annual asymmetry, and December anomaly. In addition, the results can well capture the daily spatial and temporal ionospheric variations in the day-to-day variability, the longitudinal wave 4 structures, and the interhemispheric asymmetry transition of the equatorial ionization anomaly crests. The current results demonstrate that assimilating COSMIC-2 TEC observations can further improve the 3D ionosphere specification in low-latitude and equatorial regions and can also contribute to physical research on ionosphere variability characteristics.
DOI10.1029/2021JA030192
Funding OrganizationProject of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordIONOSPHERE ; CIRCULATION ; MODEL
Language英语
Funding ProjectProject of Stable Support for Youth Team in Basic Research Field, CAS[YSBR-018] ; B-type Strategic Priority Program of the Chinese Academy of Sciences[XDB41000000] ; Open Research Project of Large Research Infrastructures ; International Partnership Program Of Chinese Academy of Sciences[183311KYSB20200003] ; National Natural Science Foundation of China[42104160]
Funding OrganizationProject of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; Project of Stable Support for Youth Team in Basic Research Field, CAS ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; B-type Strategic Priority Program of the Chinese Academy of Sciences ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; Open Research Project of Large Research Infrastructures ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; International Partnership Program Of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000777617500001
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105073
Collection地球与行星物理院重点实验室
Corresponding AuthorYue, Xinan
Affiliation1.Chinese Acad Sci, Key Lab Earth & Planetary Phys, Inst Geol & Geophys, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing, Peoples R China
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
He, Jianhui,Yue, Xinan,Le, Huijun,et al. High-Resolution and Accurate Low-Latitude Gridded Electron Density Generation and Evaluation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2022,127(4):15.
APA He, Jianhui,Yue, Xinan,Le, Huijun,Ren, Zhipeng,&Ding, Feng.(2022).High-Resolution and Accurate Low-Latitude Gridded Electron Density Generation and Evaluation.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,127(4),15.
MLA He, Jianhui,et al."High-Resolution and Accurate Low-Latitude Gridded Electron Density Generation and Evaluation".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 127.4(2022):15.
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