Table of Contents
International Journal of Atmospheric Sciences
Volume 2014 (2014), Article ID 127859, 10 pages
http://dx.doi.org/10.1155/2014/127859
Research Article

Tracking the Ionospheric Response to the Solar Eclipse of November 03, 2013

1Department of Physics, Mbarara University of Science and Technology, Mbarara, Uganda
2Department of Physics, Busitema University, Tororo, Uganda

Received 19 May 2014; Revised 28 September 2014; Accepted 8 October 2014; Published 23 October 2014

Academic Editor: Prodromos Zanis

Copyright © 2014 Emirant Bertillas Amabayo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The ionospheric dynamics is highly influenced by the solar radiation. During a solar eclipse, the moon occults the solar radiation from reaching the ionosphere, which may drastically affect the variability of the ionosphere. The variability of total electron content (TEC) observed by dual frequency Global Positioning System (GPS) receivers has made it possible to study effects of solar eclipse on the ionosphere. Total eclipse occurred on November 03, 2013, and the maximum amplitude was visible at Owiny in northern Uganda. Ionospheric behavior during this eclipse was analysed by using TEC data archived at Mbarara (MBAR), Malindi (MAL2), Eldoret (MOIU), and Kigali University (NURK) International GPS Satellite (IGS) stations. TEC variations of four consecutive days were used to study instantaneous changes of TEC during the eclipse event. The results generally show TEC decrease at the four stations. However, a maximum perturbation amplitude of ≥20 TECU was observed at MAL2 (18:00–20:00 UT) which is further south of the equator than the other stations. TEC enhancement and depletion were observed during the totality of the eclipse at MOIU, MBAR, NURK, and MAL2 (13:00–15:00 UT). This study found out that the ionospheric TEC over East Africa was modified by wave-like energy and momentum transport and obscuration of the solar disc due to the total solar eclipse.