GPS ionospheric tomography: A comparison with the IRI-2001 model over South Korea

	GPS ionospheric tomography: A comparison with the IRI-2001 model over South Korea
	Jin, Shuanggen; Park, Jong-Uk
刊名	EARTH PLANETS AND SPACE
	2007
卷号	59 期号:4 页码:287-292
关键词	IRI-2001 ionospheric tomography GPS South Korea
英文摘要	The International Reference Ionosphere model 2001 (IRI-2001) is one of the most comprehensive empirical models of the ionosphere and has been widely used to estimate the electron density profiles in the altitude ranging from about 60 to 2000 km and the total electron content (TEC) at any given location, time and date, which reflect smooth-average global ionospheric behaviors. However, whether it provides normal actual estimations in the ionosphere over some regions should be tested with real observation data. In this paper, the three-dimensional ionospheric electron density profiles over South Korea in 2003 are obtained using the ionospheric tomography reconstruction technique with the permanent Korean GPS Network (KGN) data, and its validity is further verified by another independent ionosonde data. The GPS ionospheric reconstruction results are used to compare then results obtained with the IRI-2001 model in South Korea in terms of NmF2 and TEC. The monthly averaged diurnal values of these key parameters in January, April, July and October 2003 are considered to represent the winter, spring, summer and autumn seasons, respectively. Compared with the GPS reconstruction results, averaged monthly NmF2 medians from the IRI-2001 are overestimated in daytime and underestimated in nighttime for all seasons, but the deviation magnitudes in autumn and winter are smaller than in spring and summer. In addition, averaged monthly TEC medians from the IRI-2001 are overestimated in daytime in winter, but almost always underestimated in other seasons.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geosciences, Multidisciplinary
研究领域[WOS]	Geology
关键词[WOS]	ELECTRON-CONTENT ; DISTURBANCES
收录类别	SCI
语种	英语
WOS记录号	WOS:000247321500013
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/19424]
专题	上海天文台_天文地球动力学研究中心
作者单位	1.Korea Astron & Space Sci Inst, Space Geodesy Div, Taejon 305348, South Korea 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Jin, Shuanggen,Park, Jong-Uk. GPS ionospheric tomography: A comparison with the IRI-2001 model over South Korea[J]. EARTH PLANETS AND SPACE,2007,59(4):287-292.
APA	Jin, Shuanggen,&Park, Jong-Uk.(2007).GPS ionospheric tomography: A comparison with the IRI-2001 model over South Korea.EARTH PLANETS AND SPACE,59(4),287-292.
MLA	Jin, Shuanggen,et al."GPS ionospheric tomography: A comparison with the IRI-2001 model over South Korea".EARTH PLANETS AND SPACE 59.4(2007):287-292.