HR: 09:05h
AN: SA11B-05    [Abstracts]
TI: Multi-dimensional numerical modeling of the ionospheric electron density based on the FORMOSAT-3/COSMIC GPS radio occultation data
AU: * Tsai, L
EM: lctsai@csrsr.ncu.edu.tw
AF: Center for Space and Remote Sensing Research, National Central University, Chung-Li, 320, Taiwan
AU: * Tsai, L
EM: lctsai@csrsr.ncu.edu.tw
AF: Institute of Space Science, National Central University, Chung-Li, 320, Taiwan
AU: Liu, C
EM: chliu@cc.ncu.edu.tw
AF: Institute of Space Science, National Central University, Chung-Li, 320, Taiwan
AU: Hsiao, T
EM: s9623018@cc.ncu.edu.tw
AF: Institute of Space Science, National Central University, Chung-Li, 320, Taiwan
AU: Cheng, K
EM: cheng.168@eq.ccu.edu.tw
AF: National Chung Cheng University, 168 University Rd., Min-Hsiung, Chia-Yi, TWN 168,
AB: The FORMOSAT-3 (FS3)/COSMIC program uses the radio occultation technique to receive dual-frequency GPS carrier phase signals from six low Earth orbiting satellites and approach ray-path total electron content (TEC) measurements. Using the Abel inversion through TEC values, we can collect about seventeen hundreds of vertical profiles of the ionospheric electron density within one day and than retrieve the ionospheric characteristics (e.g. foF2 and hmF2) and vertical total electron density (VTEC). The retrieved ionospheric parameters and electron density results have been used to produce numerical maps and models representing the complex properties on a world-wide scale. Here we present a two-dimensional (2D) approach from the surface spherical harmonics analysis for mapping foF2, hmF2, and VTEC data. Another approach can be generalized to the 3D case (2D surface spherical harmonics and vertical EOFs) for modeling the ionospheric electron density. The derived numerical maps and models have also been examined through the International Reference Ionosphere (IRI) model.
DE: 2437 Ionospheric dynamics
DE: 2447 Modeling and forecasting
DE: 2467 Plasma temperature and density
SC: SPA-Aeronomy [SA]
MN: 2007 Fall Meeting