PMO OpenIR
New modes and mechanisms of thermospheric mass density variations from GRACE accelerometers
Calabia, Andres1,2; Jin, Shuanggen1
2016-11-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
ISSN2169-9380
Volume121Issue:11Pages:11191-11211
Corresponding AuthorJin, Shuanggen(sgjin@shao.ac.cn)
AbstractMonitoring and understanding the upper atmosphere processes is important for orbital decay and space physics. Nowadays, Low Earth Orbit (LEO) accelerometers provide a unique opportunity to study thermospheric density variations with unprecedented details. In this paper, thermospheric mass densities variations from Gravity Recovery and Climate Experiment (GRACE) accelerometers are investigated for the period 2003-2016 using the principal component analysis (PCA). The resulting modes are analyzed and parameterized in terms of solar and magnetospheric forcing, local solar time (LST), and annual variations. A better understanding of global thermospheric air density variations is presented, which validates the suitability of our technique and model. The parameterization of the subsolar-point annual variation shows two maxima around June and only one in December. The LST parameterization shows a new fluctuation controlling a middle latitude four-wave pattern, with two maxima at 12 h and 21 h LST and two minima at 1 h and 17 h LST. Our parameterizations are suitable to represent small-scale variations including, e.g., the equatorial mass density anomaly (EMA) and the midnight density maximum (MDM). Finally, the residuals are analyzed in the spectral domain, and additional contributions are found at the frequencies of the radiational tides and at the periods of 83, 93, 152, and 431 days.
DOI10.1002/2016JA022594
WOS KeywordCHAMP OBSERVATIONS ; GEOMAGNETIC STORM ; SOLAR ; MAXIMUM
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000390403400038
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23384
Collection中国科学院紫金山天文台
Corresponding AuthorJin, Shuanggen
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Planetary Sci, Shanghai, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Calabia, Andres,Jin, Shuanggen. New modes and mechanisms of thermospheric mass density variations from GRACE accelerometers[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2016,121(11):11191-11211.
APA Calabia, Andres,&Jin, Shuanggen.(2016).New modes and mechanisms of thermospheric mass density variations from GRACE accelerometers.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,121(11),11191-11211.
MLA Calabia, Andres,et al."New modes and mechanisms of thermospheric mass density variations from GRACE accelerometers".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 121.11(2016):11191-11211.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Calabia, Andres]'s Articles
[Jin, Shuanggen]'s Articles
Baidu academic
Similar articles in Baidu academic
[Calabia, Andres]'s Articles
[Jin, Shuanggen]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Calabia, Andres]'s Articles
[Jin, Shuanggen]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.