Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2020.105120 |
Lightning activity and its associations with cloud structures in a rainstorm dominated by warm precipitation | |
Ze Liu, Dong Zheng, Fengxia Guo, Yang Zhang, ... Songyu Han | |
2020-07-02 | |
发表期刊 | Atmospheric Research |
出版年 | 2020 |
英文摘要 | Lightning activity and its associations with cloud structures during a rainstorm dominated by warm cloud precipitation were studied in Guangdong, China on May 7, 2017, using three-dimensional lightning location and polarimetric radar data. The overall convection and lightning activities of the rainstorm were weak. The rainstorm generally showed a typical tripolar charge structure with the main negative charge core located between the −15 and − 8 °C environmental isotherms in the first 4 h. The height of the charge regions clearly decreased after this period, with the main negative charge core being below the −8 °C isotherm. Lightning discharges were more concentrated in areas featuring relatively weak convection and relatively low precipitation intensity. Most of the locations with lightning discharges were dominated by dry aggregated snow and weak updrafts and downdrafts. This investigation demonstrated that the lightning discharges were spatially separated from the area of origin of charging in this rainstorm. It is proposed that, with weak convection in the rainstorm, the charging rate was lower than the speed of charge transfer from the area of origin, causing a relatively low charge density and a low frequency of lightning in the area of origin of charging. Meanwhile, the aggregation of small charged particles in regions away from the area of origin of charging might be conducive to the formation of a relatively high charge density and therefore relatively frequent lightning flashes. This situation is different from a typical thunderstorm with strong convection. |
领域 | 地球科学 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/281705 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Ze Liu, Dong Zheng, Fengxia Guo, Yang Zhang, ... Songyu Han. Lightning activity and its associations with cloud structures in a rainstorm dominated by warm precipitation[J]. Atmospheric Research,2020. |
APA | Ze Liu, Dong Zheng, Fengxia Guo, Yang Zhang, ... Songyu Han.(2020).Lightning activity and its associations with cloud structures in a rainstorm dominated by warm precipitation.Atmospheric Research. |
MLA | Ze Liu, Dong Zheng, Fengxia Guo, Yang Zhang, ... Songyu Han."Lightning activity and its associations with cloud structures in a rainstorm dominated by warm precipitation".Atmospheric Research (2020). |
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