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Thermospheric density enhancement and limb O 130.4 nm radiance increase during geomagnetic storms
We explore a connection between thermospheric density enhancement and increase in thermospheric O 130.4 nm radiance. We observe TIMED/GUVI enhancements in the limb 130.4 nm radiances at ∼400 and ∼520 km on the dayside during four intense geomagnetic storms in 2003 and 2004. The enhancements were well correlated with Dst and CHAMP total neutral density at 400 km which represents O density as O is the dominant species at those altitudes. At the 400 and 520 km altitudes, O 130.4 nm emissions are mostly created by two ...
Zhang, Yongliang; Paxton, Larry; Schaefer, R.;
Published by: Journal of Atmospheric and Solar-Terrestrial Physics Published on: mar
YEAR: 2022   DOI: 10.1016/j.jastp.2022.105830
FUV emission; Geomagentic storms; neutral density; thermosphere