闪电的能见度靠赖于能量的传导，雷云地之间放电（cloud-to-ground lightning）这是最广为研究的类型，主要是因为它们对人们的生命财产有极大的威胁性。
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Cloud-to-ground Lightning Characteristics and Environ 湖北省两类强对流天气云地闪特征及其环境条件对比研究
Thunderstorm Cloud-to-ground Lightning Characteristics in 广州地区雷暴过程云
cloud-to-ground lightning flash 云地闪
With the maximum center of graupel water content descending, the negative cloud-to-ground lightning frequercy inceases.
负地闪的发生与霰的含量和位置有着很好的对应关系,随着霰高值中心的下降,负闪增多。
参考来源 - 北京强雷暴的云地闪特征与云物理及降水演变关系的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Then a strong current of electrons follows that path from the cloud to the ground, and it is that current that illuminates the channel as the lightning we see.
然后一股强大的电子电流沿着这条路径，从云层到达地面，正是这种电流像我们看到的闪电一样照亮了通道。
Using high-speed photography, scientists have determined that there are two steps to the occurrence of lightning from a cloud to the ground.
利用高速摄影技术，科学家们已经确定了闪电从云层到达地面有两个步骤。
Storms producing cloud to ground lightning (lightning that strikes the ground) in isolated thunderstorms or super cells (which can be very dangerous) produce some dramatic pictures.
风暴产生的云团和雷电交加的暴风雨会产生地面闪电(击向地面的闪电)，或者超级闪电(可能非常危险)会拍出极具效果的照片。
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