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Association of lightning occurrence with precipitation cloud column structure at a fixed position | |
Yanxing Cui, Dong Zheng, Yijun Zhang, Zheng Ruan, ... Chuanhong Zhao | |
2021-12-23 | |
发表期刊 | Atmospheric Research |
出版年 | 2021 |
英文摘要 | In this study, a C-band frequency-modulated continuous-wave (C-FMCW) radar, with its feature of vertical detection, was combined with lightning discharge recordings within a 3 km range to investigate the dependence of lightning occurrence on the structure of precipitation cloud columns (PCCs) from the perspective of a fixed position. The results show that, relative to PCCs without lightning, PCCs with lightning exhibit greater maximum reflectivity, maximum upward radial velocity, maximum velocity spectrum width, cloud top height, and vertically integrated liquid in terms of their average values, and wider-range distributions of these parameters. Using the Light Gradient Boosting Machine algorithm, a lightning diagnosis program that integrates multiple C-FMCW radar parameters was developed. Its hit rate of lightning occurrence is 93.5% and it has a threat score of 0.421. The maximum velocity spectrum width above the melting layer was found to be the most effective in distinguishing PCCs with or without lightning. It was suggested that the hydrometeor properties at a specific location, specifically the size diversity and content of ice-phase particles, should be the key elements determining the occurrence of lightning in PCCs. |
领域 | 地球科学 |
URL | 查看原文 |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/344113 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Yanxing Cui, Dong Zheng, Yijun Zhang, Zheng Ruan, ... Chuanhong Zhao. Association of lightning occurrence with precipitation cloud column structure at a fixed position[J]. Atmospheric Research,2021. |
APA | Yanxing Cui, Dong Zheng, Yijun Zhang, Zheng Ruan, ... Chuanhong Zhao.(2021).Association of lightning occurrence with precipitation cloud column structure at a fixed position.Atmospheric Research. |
MLA | Yanxing Cui, Dong Zheng, Yijun Zhang, Zheng Ruan, ... Chuanhong Zhao."Association of lightning occurrence with precipitation cloud column structure at a fixed position".Atmospheric Research (2021). |
条目包含的文件 | 条目无相关文件。 |
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