Data assimilation retrieval of electron density profiles from radio occultation measurements

doi:10.1029/2010JA015980

	Data assimilation retrieval of electron density profiles from radio occultation measurements
	Yue, Xinan 1; Schreiner, William S.1; Lin, Yu-Cheng 1; Rocken, Christian 1; Kuo, Ying-Hwa 1; Zhao, Biqiang 2
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2011-03-23
卷号	116
ISSN号	0148-0227
DOI	10.1029/2010JA015980
文献子类	Article
英文摘要	In this paper, the Kalman filter is used to retrieve the electron density profile along the tangent points by assimilating the slant total electron content data observed during a radio occultation (RO) event into an empirical background model. The RO data observed by COSMIC satellites on day of year 266 in 2009 are selected to do both the simulation work and the real data retrieval test. The results show that the data assimilation technique can improve the electron density retrieval in comparison with the Abel inversion. It is less influenced by the ionospheric inhomogeneity than the Abel method. Some pseudo-large-scale features made by the Abel retrieval, such as the plasma cave underneath the equatorial ionization anomaly region and the three peaks along the latitude direction in the E layer, disappear in the data assimilation retrieval results. Independent validation by ground-based ionosonde observations confirms the improvement of data assimilation retrieval below the F(2) peak. In addition, some potential research on RO data assimilation is also discussed.
WOS关键词	IONOSPHERIC MODEL ; ABEL INVERSION ; GPS ; SYSTEM ; IMPROVEMENT ; VALIDATION ; CHAMP ; IRI
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000288872800004
资助机构	U.S. Air Force via the National Science Foundation(AGS-0918398/CSA AGS-0961147) ; U.S. Air Force via the National Science Foundation(AGS-0918398/CSA AGS-0961147) ; National Science Foundation of China(40904037) ; National Science Foundation of China(40904037) ; SOA Key Laboratory for Polar Science in China(KP2008009) ; SOA Key Laboratory for Polar Science in China(KP2008009) ; U.S. Air Force via the National Science Foundation(AGS-0918398/CSA AGS-0961147) ; U.S. Air Force via the National Science Foundation(AGS-0918398/CSA AGS-0961147) ; National Science Foundation of China(40904037) ; National Science Foundation of China(40904037) ; SOA Key Laboratory for Polar Science in China(KP2008009) ; SOA Key Laboratory for Polar Science in China(KP2008009) ; U.S. Air Force via the National Science Foundation(AGS-0918398/CSA AGS-0961147) ; U.S. Air Force via the National Science Foundation(AGS-0918398/CSA AGS-0961147) ; National Science Foundation of China(40904037) ; National Science Foundation of China(40904037) ; SOA Key Laboratory for Polar Science in China(KP2008009) ; SOA Key Laboratory for Polar Science in China(KP2008009) ; U.S. Air Force via the National Science Foundation(AGS-0918398/CSA AGS-0961147) ; U.S. Air Force via the National Science Foundation(AGS-0918398/CSA AGS-0961147) ; National Science Foundation of China(40904037) ; National Science Foundation of China(40904037) ; SOA Key Laboratory for Polar Science in China(KP2008009) ; SOA Key Laboratory for Polar Science in China(KP2008009)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/73890]
专题	中国科学院地质与地球物理研究所
通讯作者	Yue, Xinan
作者单位	1.Univ Corp Atmospher Res, COSMIC Program Off, Boulder, CO 80307 USA 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Yue, Xinan,Schreiner, William S.,Lin, Yu-Cheng,et al. Data assimilation retrieval of electron density profiles from radio occultation measurements[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2011,116.
APA	Yue, Xinan,Schreiner, William S.,Lin, Yu-Cheng,Rocken, Christian,Kuo, Ying-Hwa,&Zhao, Biqiang.(2011).Data assimilation retrieval of electron density profiles from radio occultation measurements.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,116.
MLA	Yue, Xinan,et al."Data assimilation retrieval of electron density profiles from radio occultation measurements".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 116(2011).