Interhemispheric Asymmetry of the Thermospheric Neutral Density Response to the 7–9 September 2017 Geomagnetic Storms
نویسندگان
چکیده
The thermospheric neutral density response to the 7–9 September 2017 storms is investigated based on Swarm satellite observations and thermosphere-ionosphere-electrodynamic general circulation model (TIEGCM) simulation. data depicted a prominent interhemispheric asymmetry (IHA) in afternoon sector during second storm, feature that was yet explained. Driven by realistic high-latitude electric potential electron precipitation patterns, TIEGCM able reproduce observed storm-time response. simulation reveals differences traveling atmospheric disturbances (TADs) largely responsible for IHA mass at low middle latitudes, whereas difference mean molecular between two hemispheres may contribute higher latitudes. IHAs TADs are attributed Joule heating dissipation night dawn sides.
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2023
ISSN: ['1944-8007', '0094-8276']
DOI: https://doi.org/10.1029/2023gl103208