Wavenumber-4 patterns of the total electron content over the low latitude ionosphere

doi:10.1029/2008GL033755

	Wavenumber-4 patterns of the total electron content over the low latitude ionosphere
	Wan, W.1; Liu, L.1; Pi, X.2; Zhang, M. -L.1; Ning, B.1; Xiong, J.1; Ding, F.1
刊名	GEOPHYSICAL RESEARCH LETTERS
	2008-06-21
卷号	35 期号:12
ISSN号	0094-8276
DOI	10.1029/2008GL033755
文献子类	Article
英文摘要	The global ionospheric maps (GIMs) produced by JPL are used to investigate the longitudinal structure of the low latitude ionosphere. As a proxy of the ionization parameter at low latitudes, the latitudinally integrated total electron content (ITEC) is first extracted from low latitude GIMs and then Fourier filtered to obtain the wavenumber-4 components. We then study in detail the diurnal, seasonal and solar cycle variations of the wave patterns. It is found that the wavenumber-4 patterns are intense and well developed in boreal summer and early boreal autumn, but quite weak in boreal winter. This seasonal variation is consistent with that of the zonal wind of the non-migrating tide mode DE3. We also found that the wavenumber-4 patterns shift eastward with a shifting speed that is smaller in daytime than at night. This is attributed to the contribution of both the eastward propagation of DE3 in E-region and the zonal E x B ion drifts in F-region. Our results support the suggestion that the longitudinal wavenumber-4 structure of the low latitude ionosphere should be originated from the non-migrating tide mode DE3.
WOS关键词	NONMIGRATING DIURNAL TIDES ; LATENT-HEAT RELEASE ; THERMOSPHERE
WOS研究方向	Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000257052700001
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/70096]
专题	中国科学院地质与地球物理研究所
通讯作者	Wan, W.
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
推荐引用方式 GB/T 7714	Wan, W.,Liu, L.,Pi, X.,et al. Wavenumber-4 patterns of the total electron content over the low latitude ionosphere[J]. GEOPHYSICAL RESEARCH LETTERS,2008,35(12).
APA	Wan, W..,Liu, L..,Pi, X..,Zhang, M. -L..,Ning, B..,...&Ding, F..(2008).Wavenumber-4 patterns of the total electron content over the low latitude ionosphere.GEOPHYSICAL RESEARCH LETTERS,35(12).
MLA	Wan, W.,et al."Wavenumber-4 patterns of the total electron content over the low latitude ionosphere".GEOPHYSICAL RESEARCH LETTERS 35.12(2008).