An experimental study on the global coupling between the Earth's troposphere and ionosphere through electrical discharges

在这项研究中，我们分析了卫星光学数据和地面无线电数据，以通过闪电放电和 TLE（瞬态发光事件）阐明地球对流层和电离层之间的电磁耦合。研究表明，星载光学仪器对于获取闪电的电特性非常有用。基于我们在这里开发的技术，发现海洋上的闪电峰值电流强度和精灵出现的概率都高于陆地上。研究还发现，高纬度地区雷电放电的持续电流往往较长，这与中纬度地区精灵出现概率高于低纬度地区的结果吻合。

In this study, we analyzed satellite optical data and ground-based radio data to elucidate the electromagnetic coupling between the Earth's troposphere and ionosphere through lightning discharges and TLEs (Transient Luminous Events). It was shown that spaceborne optical instruments are useful to derive electrical properties of lightning. Based on the technique we developed here, it was found that the peak current intensity of lightning and the occurrence probability of elves are both higher over ocean than over land. It was also found that lightning discharges tend to have longer continuing current at higher latitudes, which is in good agreement with the result that the occurrence probability of sprites is higher at mid-latitudes than at low-latitudes.