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Abstract:
This work studies variations of ionospheric total electron content (TEC) during four distinct solar
eclipse events over the Ethiopia region. Dual‐frequency global positioning system (GPS) data obtained from
UNAVCO over Addis Ababa (9.036°N, 38.76°E) and Bahir Dar (11.6°N, 37.34°E) stations are used to examine
the ionospheric variability during two annular solar eclipses on 15 January 2010 and 1 September 2016, a partial
solar eclipse on 4 January 2011, and a hybrid solar eclipse (the eclipse path starts out as annular but later changes
to total) on 3 November 2013. The results show a significant decrease in TEC values during the occurrence of
the solar eclipses. Specifically, the TEC values are reduced to