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Percentage of single-stroke flashes related to different thunderstorm types
Electric Power Systems Research ( IF 3.9 ) Pub Date : 2021-02-24 , DOI: 10.1016/j.epsr.2021.107109
Lukas Schwalt , Stephan Pack , Wolfgang Schulz , Georg Pistotnik

This study shows an analysis of data from measurements of natural cloud-to-ground lightning performed in Austria between 2009 and 2018. The measurement system consists of a high-speed Video and electric Field Recording System (VFRS). Over the whole period, 735 negative cloud-to-ground flashes were recorded at 33 different locations on 61 individual days. The measurement locations are scattered across the Austrian territory in Alpine and pre-Alpine terrain. Data from the Austrian Lightning Location System (LLS), ALDIS, are correlated with the collected VFRS ground truth data to complete the dataset. These datasets are used to analyze possible reasons for the detected variation of single-stroke flashes in Austria. The percentage of single-stroke flashes among all negative flashes is higher in this study (27 %) than in previous studies from different countries (12 to 24 %). A classification of thunderstorms does not show any dependency of the single-stroke flash occurrence on different thunderstorm types (based on radar data) or underlying meteorological characteristics (based on vertical wind shear computed from weather stations and radiosondes). In contrast, a possible dependency of the occurrence of single-stroke flashes on underlying terrain (Alpine versus pre-Alpine) is noted.



中文翻译:

与不同雷暴类型有关的单冲程闪光灯的百分比

这项研究显示了对2009年至2018年在奥地利进行的自然云对地闪电测量数据的分析。该测量系统由高速视频和电场记录系统(VFRS)组成。在整个期间内,在61天中的33个不同位置记录了735次负云对地闪光。测量位置分散在阿尔卑斯山和阿尔卑斯山之前的地形中的奥地利领土上。来自奥地利闪电定位系统(LLS)ALDIS的数据与收集的VFRS地面真实数据相关联,以完成数据集。这些数据集用于分析检测到的奥地利单冲程闪光变化的可能原因。在这项研究中,所有负闪光中的单冲程闪光所占的百分比(27%)高于之前来自不同国家的研究(12%至24%)。雷暴的分类没有显示单冲程闪光发生对不同雷暴类型(基于雷达数据)或基础气象特征(基于从气象站和无线电探空仪计算的垂直风切变)的任何依赖性。相比之下,注意到单笔闪光的发生可能依赖于基础地形(高山与高山前)。雷暴的分类没有显示单冲程闪光发生对不同雷暴类型(基于雷达数据)或潜在的气象特征(基于从气象站和无线电探空仪计算的垂直风切变)的任何依赖性。相比之下,注意到单笔闪光的发生可能依赖于基础地形(高山与高山前)。雷暴的分类没有显示单冲程闪光发生对不同雷暴类型(基于雷达数据)或基础气象特征(基于从气象站和无线电探空仪计算的垂直风切变)的任何依赖性。相比之下,注意到单笔闪光的发生可能依赖于基础地形(高山与高山前)。

更新日期:2021-02-24
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