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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Morning Overshoot of Electron Temperature as Observed by the Swarm Constellation and the International Space Station
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Morning Overshoot of Electron Temperature as Observed by the Swarm Constellation and the International Space Station

机译：早上的电子温度过头了观察星座群和国际空间站

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摘要

The rapid increase of electron temperature in the early morning hours at low latitudes is a well-known ionospheric phenomenon called morning overshoot. In this study, we extensively investigate the dependence of morning overshoot on local time, season, latitude/longitude/altitude, and magnetic activity. The electron temperature and density data set used in this study are obtained from (1) the Swarm constellation at two different altitudes of 470 and 520 km with identical payloads and (2) the Floating Potential Measurement Unit onboard International Space Station at an altitude of 400 km. Based on the data between 2014 and 2019, the main findings of this study are as follows: (1) on a global average, morning overshoot generally weakens with decreasing altitudes. (2) Morning overshoot is stronger around the dip equator than at midlatitude regions. As latitude increases, the overshoot decreases gradually and shifts to later local times. (3) In off-equatorial regions the overshoot is stronger in the winter than in the summer hemisphere, especially at higher altitudes. (4) Lastly, the morning overshoot shows multiday oscillations, which are negatively correlated with plasma density and affected by geomagnetic activity.
机译：电子温度的快速增长凌晨在低纬度地区著名的电离层现象叫做早晨过度。研究早晨过度的依赖在当地时间,季节,纬度/经度/高度和磁性活动。本研究中使用的数据集得到从(1)蜂群在两个不同的星座470和520公里处的相同有效载荷和(2)浮动的潜力测量单元上的国际空间站在海拔400公里。2014年和2019年之间的数据,主要发现本研究如下:(1)在全球平均,一般早上过度削弱降低高度。在磁赤道比更强中间纬度地区。过度降低逐渐转向后当地时间。过度比在冬天更强夏天的半球,特别是在高海拔。显示了多日的振荡,这是消极的与等离子体密度和影响地磁活动。

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