Source of the Observed Enhancements in Thermospheric ΣO/N2 During Two Solar Eclipses in 2023
C. E. Cantrall,
S. Mrak,
L. J. Paxton
et al.
Abstract:Two solar eclipse events in 2023 appeared to produce considerable enhancements in the thermospheric column density ratio of monatomic oxygen to molecular nitrogen (ΣO/N2) as measured by TIMED GUVI. We quantify potential sources for eclipse‐induced ΣO/N2 changes and find that the observed enhancements arise from the ionospheric O+ radiative recombination contribution to the OI 135.6 nm emission from which ΣO/N2 is derived. Variations in the solar Extreme Ultra Violet (EUV) and X‐ray spectrum, due to the differe… Show more
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