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首页> 外文期刊>Journal of Geophysical Research, D. Atmospheres: JGR >Small negative cloud-to-ground lightning reports at the NASA Kennedy Space Center and Air Force Eastern Range
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Small negative cloud-to-ground lightning reports at the NASA Kennedy Space Center and Air Force Eastern Range

机译：美国宇航局肯尼迪航天中心和空军东部靶场的小型云对地闪电报告

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摘要

The NASA Kennedy Space Center (KSC) and Air Force Eastern Range (ER) use datafrom two cloud-to-ground (CG) lightning detection networks, the Cloud-to-Ground Lightning Surveillance System (CGLSS) and the U.S. National Lightning Detection NetworkTM (NLDN), and a volumetric lightning mapping array, the Lightning Detection and Ranging (LDAR) system, to monitor and characterize lightning that is potentially hazardous to launch or ground operations. Data obtained from these systems during June—August 2006 have been examined to check the classification of small, negative CGLSS reports that have an estimated peak current, Ip less than 7 kA, and to determine the smallest values of that are produced by first strokes, by subsequent strokes that create a new ground contact (NGC), and by subsequent strokes that remain in a preexisting channel (PEC). The results show that within 20 km of the KSC-ER, 21% of the low-amplitude negative CGLSS reports were produced by first strokes, with a minimum Ip of —2.9 kA; 31% were by NGCs, with a minimum Ip of —2.0 kA; and 14% were by PECs, with a minimum I p of —2.2 kA. The remaining 34% were produced by cloud pulses or lightning events that we were not able to classify.
机译：NASA肯尼迪航天中心（KSC）和空军东部靶场（ER）使用来自两个云对地（CG）闪电检测网络，云对地闪电监视系统（CGLSS）和美国国家闪电检测网络TM的数据（NLDN）和体积雷电映射阵列，即雷电探测与测距（LDAR）系统，以监视和表征可能对发射或地面运行造成危险的雷电。我们已研究了从2006年6月至2006年8月期间从这些系统获得的数据，以检查小型CGLSS负报告的分类，这些报告的估计峰值电流Ip小于7 kA，并确定由第一笔冲程产生的最小值，通过创建新的地面接触（NGC）的后续笔触，以及保留在预先存在的通道（PEC）中的后续笔触。结果表明，在KSC-ER的20公里范围内，有21％的低振幅负CGLSS报告是由第一笔划产生的，最小Ip为-2.9 kA; 31％来自NGC，最小Ip为-2.0 kA; PEC占14％，最小I p为-2.2 kA。其余34％是由我们无法分类的云脉冲或雷电事件产生的。

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