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arXiv · 2004.08278

The impact of CMEs on the critical frequency of F2-layer ionosphere (foF2)

Alene Seyoum·Nat Gopalswamy·Melessew Nigussie·Nigusse Mezgebe
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Abstract

The ionospheric critical frequency (foF2) from ionosonde measurements at geographic high, middle, and low latitudes is analyzed with the occurrence of coronal mass ejections (CMEs) in long term variability of the solar cycles. We observed trends of monthly maximum foF2 values and monthly averaged values of CME parameters such as speed, angular width, mass, and kinetic energy with respect to time. The impact of CMEs on foF2 is very high at high latitudes and low at low latitudes. The time series for monthly maximum foF2 and monthly-averaged CME speed is moderately correlated at high and middle latitudes.

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Alene Seyoum, Nat Gopalswamy, Melessew Nigussie, Nigusse Mezgebe. 2020-04-10. The impact of CMEs on the critical frequency of F2-layer ionosphere (foF2). https://doi.org/10.1017/s1743921320003579

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