Abstract
Xinjiang, China is affected by geographical terrain and other factors, and is prone to lightning disasters. In order to effectively carry out lightning protection and disaster reduction work and improve defense capabilities, based on the data of lightning location monitoring in Xinjiang in 2017 and the statistics reports of the lightning disasters from 2015 to 2017, the characteristics of the cloud-to-ground (CG) lightning activities and disasters in Xinjiang were statistically analyzed. The results show that the CG lightning in Xinjiang is mainly the negative one, accounting for 79.7% of the total lightning. In 2017, the distribution of positive, negative and total the CG lightning months mainly focuses on June to August, and the main occurrence period is from 14 to 23 hours. The intensity of total the CG lightning and negative the CG lightning mainly distributes from 20 to 40 kA, and the peak value appears in 30 kA. The CG lightning intensity is mainly distributed in 30 - 70 kA. The distribution of the CG lightning density in Xinjiang is larger in the north than in the south and larger in the west than in the east. Lightning disasters mainly occur from May to August, accounting for 93.2 percent of the total, with the largest number in June. From 2005 to 2017, 44.6% of lightning accidents occurred in farming and pastoral areas, followed by civil electronic equipment damage. In addition, electrical equipment, buildings and factory equipment are damaged by lightning strikes to varying degrees.
Highlights
Lightning is an extremely long-distance discharge process in the atmosphere, usually accompanied by a strong convective weather process
The results show that the CG lightning in Xinjiang is mainly the negative one, accounting for 79.7% of the total lightning
Many experts in China have conducted a lot of research on the law of lightning activity and the temporal and spatial distribution characteristics of lightning disasters
Summary
Lightning is an extremely long-distance discharge process in the atmosphere, usually accompanied by a strong convective weather process. Many experts in China have conducted a lot of research on the law of lightning activity and the temporal and spatial distribution characteristics of lightning disasters. A large number of studies have shown that domestic provinces have carried out analysis of thunderstorm days, lightning and their distribution characteristics, but the research on the characteristics of lightning and its disasters in Xinjiang is relatively lacking. This paper mainly uses Xinjiang lightning monitoring in 2017 and the statistical report of lightning disasters in 2005-2017 to comprehensively analyze the temporal, spatial, intensity and thunderstorm characteristics of Xinjiang lightning activities, which is conducive to understanding and mastering the local lightning activity law. It is of great significance to effectively carry out lightning protection and disaster reduction work and improve the actual defense capability against lightning disasters
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