A near real-time phenomenological model of ionospheric electron density based on GPS radio occultation data

NCUIR > Research Center > Center for Space and Remote Sensing Research > journal & Dissertation > Item 987654321/27642

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/27642

Title:	A near real-time phenomenological model of ionospheric electron density based on GPS radio occultation data
Authors:	Tsai,LC;Liu,CH;Hsiao,TY;Huang,JY
Contributors:	太空及遙測研究中心
Keywords:	NONMIGRATING DIURNAL TIDES;TOPSIDE;VALIDATION;REGION;WINDS
Date:	2009
Issue Date:	2010-06-29 18:51:16 (UTC+8)
Publisher:	中央大學
Abstract:	A numerical and phenomenological model of global ionospheric electron density (N-e) is investigated. The three-dimensional N-e model has been named the Taiwan Ionospheric Model (TWIM) and constructed from monthly weighted and hourly vertical N-e profiles retrieved from FormoSat3/COSMIC GPS radio occultation measurements. The TWIM exhibits vertically fitted Chapman layers, with distinct F2, F1, E, and D layers, and surface spherical harmonics approaches for the fitted Chapman layer parameters including peak density, peak density height, and scale height. These results are useful in investigation of N(e)ar-Earth space and large-scale N-e distribution with diurnal and seasonal variations, along with geographic features such as the equatorial anomaly (EA). This paper also investigates the diurnal and seasonal variations of EA within different ionospheric layers and specifically attempts to account for the latitudinal and longitudinal structures caused by atmospheric tides.
Relation:	RADIO SCIENCE
Appears in Collections:	[Center for Space and Remote Sensing Research ] journal & Dissertation

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