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Ionospheric energy input in response to changes in solar wind driving: Statistics from the SuperDARN and AMPERE campaigns
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  • Daniel D Billett,
  • Kathryn A McWilliams,
  • Gareth William Perry,
  • Lasse Boy Novock Clausen,
  • Brian J. Anderson
Daniel D Billett
University of Saskatchewan

Corresponding Author:[email protected]

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Kathryn A McWilliams
University of Saskatchewan
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Gareth William Perry
New Jersey Institute of Technology
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Lasse Boy Novock Clausen
University of Oslo
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Brian J. Anderson
John Hopkins Univ.
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For over a decade, the Super Dual Auroral Radar Network (SuperDARN) and the Active Magnetosphere and Planetary Electrodynamics Response Experiment (AMPERE) have been measuring ionospheric convection and field-aligned currents in the high-latitude regions, respectively. Using both, whole hemisphere maps of the magnetosphere-ionosphere energy transfer rate (the Poynting flux) have been generated with a time resolution of two minutes between 2010 and 2017. These uniquely data driven Poynting flux patterns are used in this study to perform a superposed epoch analysis of the northern hemisphere ionospheric response to transitions of the IMF B_z component. We discuss the difference in the distribution of Poynting flux between the magnetosphere-ionosphere Dungey cycle “switching on” and “switching off” to solar wind driving, revealing that they are not symmetric temporally or spatially.
Mar 2022Published in Journal of Geophysical Research: Space Physics volume 127 issue 3. 10.1029/2021JA030102