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Imaging of the Antarctic ionosphere: Experimental results

Yin, Ping; Mitchell, Cathryn N.; Alfonsi, Lucilla; Pinnock, Mike; Spencer, Paul; De Franceschi, Giorgiana; Romano, Vincenzo; Newell, Patrick; Sarti, Pierguido; Negusini, Monia; Capra, Alessandro. 2009 Imaging of the Antarctic ionosphere: Experimental results. Journal of Atmospheric and Solar-Terrestrial Physics, 71 (17-18). 1757-1765. 10.1016/j.jastp.2009.09.014

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Abstract/Summary

Ground-based dual-frequency GPS observations can be used to create images of electron density. This is well established for the Arctic ionosphere; here one of the first results is presented for the Antarctic. In this study, the GPS receivers in the Antarctic are supplemented with another GPS receiver onboard CHAMP. The aim of the study is to demonstrate the technique for investigating geophysical events, for example, an ionospheric disturbance period on 11 February 2004. The images have been validated by in-situ measurements from DMSP and CHAMP satellites, as well as Super Dual Auroral Radar Network (SuperDARN) convection patterns, which are able to confirm the location, presence, and transportation of large-scale plasma patches. This study indicates that although the convection still dominates in the high-latitude ionosphere, soft precipitation within the polar cap may play a role in the evolution of the polar patches. It also illustrates the potential for future multi-instrument studies of the Antarctic.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1016/j.jastp.2009.09.014
Programmes: BAS Programmes > Polar Science for Planet Earth (2009 - ) > Climate
ISSN: 1364-6826
Additional Keywords: GPS imaging; Antarctic ionosphere; Multi-instrument approach; Ionospheric disturbance
NORA Subject Terms: Atmospheric Sciences
Electronics, Engineering and Technology
Date made live: 18 Nov 2010 11:43
URI: http://nora.nerc.ac.uk/id/eprint/11381

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