Ionospheric Energy Input in Response to Changes in Solar Wind Driving: Statistics From the SuperDARN and AMPERE Campaigns
Ionospheric Energy Input in Response to Changes in Solar Wind Driving: Statistics From the SuperDARN and AMPERE Campaigns
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DOI：
10.1029/2021ja030102
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发表时间：
2021-09
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影响因子：
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通讯作者：
D. Billett;K. McWilliams;G. Perry;L. Clausen;B. Anderson
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作者：
D. Billett;K. McWilliams;G. Perry;L. Clausen;B. Anderson
十多年来，超级双极光雷达网络和活动磁层和行星电动力学响应实验分别测量了高纬度地区的电离层对流和场向电流。使用这两种方法，在2010年至2017年期间以2分钟的时间分辨率生成了磁层-电离层能量传输率（坡印廷通量）的高纬度地图。这些数据驱动的坡印廷通量（PF）模式在这项研究中使用的行星际磁场Bz分量的转换，60°地磁纬度以上的北方半球电离层响应进行叠加历元分析。我们讨论了磁层-电离层邓吉循环“开启”和“关闭”太阳风驱动之间PF分布的差异，揭示了它们在时间或空间上不对称。
For over a decade, the Super Dual Auroral Radar Network and the Active Magnetosphere and Planetary Electrodynamics Response Experiment have been measuring ionospheric convection and field‐aligned currents in the high‐latitude regions, respectively. Using both, high‐latitude maps of the magnetosphere‐ionosphere energy transfer rate (the Poynting flux) have been generated with a time resolution of 2 min between 2010 and 2017. These data driven Poynting flux (PF) patterns are used in this study to perform a superposed epoch analysis of the northern hemisphere ionospheric response to transitions of the interplanetary magnetic field Bz component, upwards of 60° geomagnetic latitude. We discuss the difference in the distribution of PF between the magnetosphere‐ionosphere Dungey cycle “switching on” and “switching off” to solar wind driving, revealing that they are not symmetric temporally or spatially.