Terdiurnal migrating-tide signature in ionospheric total electron content

	Terdiurnal migrating-tide signature in ionospheric total electron content
	Luan, Xiaoli; Dou, Xiankang; Lei, Jiuhou; Jiang, Guoying
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2012
卷号	117 页码:A11302
ISSN号	0148-0227
通讯作者	Dou, XK (reprint author), Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Geospace Environm, 96 Jin Zhai Rd, Hefei 230026, Peoples R China.
中文摘要	We report the latitudinal, seasonal and solar cycle variations of terdiurnal migrating tide (i.e., terdiurnal westward wave number 3, TW3) signature in ionospheric total electron content (TEC). Our investigations are based on the JPL global ionospheric maps (GIMs) during 1999-2011. The absolute amplitude of TW3 exhibits maximum values in the magnetic equatorial region, which reaches about 8 TECu under high solar activity and 1.5 TECu under low solar activity. The relative amplitude of zonal mean TEC in equatorial region, however, shows persistent patterns from 1999 to 2011 with little solar activity dependence. The relative amplitude of TW3 has a peak of similar to 10% in the magnetic equatorial region and a second one of similar to 7% at magnetic middle latitudes (30 degrees-50 degrees). At high latitudes in local winter seasons, the maximum relative amplitude occurs, which varies between 8 and 15% with slightly larger amplitudes in the Northern Hemisphere. The global structure of TW3 signature in TEC should shed some light on the coupling between the ionosphere-thermosphere and the lower atmosphere.
英文摘要	We report the latitudinal, seasonal and solar cycle variations of terdiurnal migrating tide (i.e., terdiurnal westward wave number 3, TW3) signature in ionospheric total electron content (TEC). Our investigations are based on the JPL global ionospheric maps (GIMs) during 1999-2011. The absolute amplitude of TW3 exhibits maximum values in the magnetic equatorial region, which reaches about 8 TECu under high solar activity and 1.5 TECu under low solar activity. The relative amplitude of zonal mean TEC in equatorial region, however, shows persistent patterns from 1999 to 2011 with little solar activity dependence. The relative amplitude of TW3 has a peak of similar to 10% in the magnetic equatorial region and a second one of similar to 7% at magnetic middle latitudes (30 degrees-50 degrees). At high latitudes in local winter seasons, the maximum relative amplitude occurs, which varies between 8 and 15% with slightly larger amplitudes in the Northern Hemisphere. The global structure of TW3 signature in TEC should shed some light on the coupling between the ionosphere-thermosphere and the lower atmosphere.
学科主题	空间物理
收录类别	SCI
资助信息	Project of Chinese Academy of Sciences [KZZD-EW-01]; National Natural Science Foundation of China [41104107, 41274158, 41274145, 41174139, 41121003, 41025016]; Specialized Research Fund for State Key Laboratories; fundamental research funds for the central universities [WK2080000031]
语种	英语
公开日期	2014-12-15
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/3203]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Luan, Xiaoli,Dou, Xiankang,Lei, Jiuhou,et al. Terdiurnal migrating-tide signature in ionospheric total electron content[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2012,117:A11302.
APA	Luan, Xiaoli,Dou, Xiankang,Lei, Jiuhou,&Jiang, Guoying.(2012).Terdiurnal migrating-tide signature in ionospheric total electron content.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,117,A11302.
MLA	Luan, Xiaoli,et al."Terdiurnal migrating-tide signature in ionospheric total electron content".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 117(2012):A11302.