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  2. 地质与地球物理研究所
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  4. 中国科学院地球与行星物理重点实验室
Characterizing Ionospheric Effect on GNSS Radio Occultation Atmospheric Bending Angle

文献类型：期刊论文

作者Li, Mingzhe1,2,4,5; Yue, Xinan1,2,4,5; Wan, Weixing1,2,4,5; Schreiner, William S.3
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
出版日期2020-06-01
卷号125期号:6页码:15
关键词GNSS atmospheric radio occultation data analysis ray tracing residual ionospheric error
ISSN号2169-9380
DOI10.1029/2019JA027471
英文摘要Global Navigation Satellite System (GNSS) atmospheric radio occultation (RO) has been an active remote sensing method to explore the Earth's atmosphere recently. The RO products especially atmospheric bending angles have been widely used for climate study. However, the residual ionospheric error (RIE) still exists to a certain extent after the widely used linear combination in bending angle calculation. In this study, we analyzed both CHAMP and COSMIC data and did full 3-D ray tracing to characterize RIE. It is found that the order of RIE is around +/- 0.1 mu rad and has an obvious dependency on a variety of factors including altitude, latitude, local time, season, and solar activity level. The amplitude and complexity of RIE generally increase with altitude. It is closely related to the strength of theElayer and the asymmetry between LEO side and GNSS side. Along magnetic latitude direction, the RIE shows a pronounced feature of two peaks and three troughs. From both the simulated and observed RIE, we can identify clearly the ionospheric seasonal variation features, such as the semiannual variation, the equinox asymmetry and the annual anomaly. A spherical asymmetry factor was also defined to quantify the correlation between ionospheric spherical asymmetry degree and RIE. The study provides a comprehensive understanding of RIE, which could contribute to the correction of RIE in the future.
WOS关键词EARTHS ATMOSPHERE ; IMPACT ; ERRORS ; PROFILES
资助项目Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; National Natural Science Foundation of China[41427901] ; Key Research Program of the IGGCAS[IGGCAS-201904]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000545696000022
出版者AMER GEOPHYSICAL UNION
资助机构Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures-"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS ; Key Research Program of the IGGCAS
源URL[http://ir.iggcas.ac.cn/handle/132A11/97134]  
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Yue, Xinan
作者单位1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
3.Univ Corp Atmospher Res, COSMIC Program Off, Boulder, CO USA
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
5.Chinese Acad Sci, Beijing Natl Observ Space Environm, Inst Geol & Geophys, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Li, Mingzhe,Yue, Xinan,Wan, Weixing,et al. Characterizing Ionospheric Effect on GNSS Radio Occultation Atmospheric Bending Angle[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2020,125(6):15.
APA Li, Mingzhe,Yue, Xinan,Wan, Weixing,&Schreiner, William S..(2020).Characterizing Ionospheric Effect on GNSS Radio Occultation Atmospheric Bending Angle.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,125(6),15.
MLA Li, Mingzhe,et al."Characterizing Ionospheric Effect on GNSS Radio Occultation Atmospheric Bending Angle".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 125.6(2020):15.

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来源：地质与地球物理研究所

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