气候变化领域集成服务门户(CCPortal): Analysis of Inverted Charge Structure and Lightning Activity during the 8.14 Local Hailstorm on the Qinghai-Tibet Plateau

CCPortal

DOI	10.3390/atmos14121795
	Analysis of Inverted Charge Structure and Lightning Activity during the 8.14 Local Hailstorm on the Qinghai-Tibet Plateau
	Li, Yajun; Zhang, Guangshu; Lyu, Weitao; Zhao, Yuxiang
发表日期	2023
EISSN	2073-4433
卷号	14 期号:12
英文摘要	In this paper, the charge structure and lightning activity characteristics of the thunderstorm that occurred on the Qinghai-Tibet Plateau on 14 August 2014 were analyzed using data collected from a three-dimensional (3D) lightning very-high-frequency (VHF) radiation source location system and Doppler weather radar. The analysis results showed that the charge structure of the hailstorm was maintained as an inverted dipole throughout the thunderstorm's development process. The negatively charged region height was distributed in the 5-7 km range (above ground level (AGL)), and the positively charged region was distributed from 2 to 5 km (AGL). The lightning flash types included only cloud flashes and negative cloud-to-ground (CG) flashes in the hailstorm, and cloud flashes accounted for 93% of the total lightning flashes. Cloud flashes accounted for a high proportion of the total flashes, which may have been related to the deep lower positively charged region observed throughout the thunderstorm process. In the hailstorm development stage, the electric field was dominated by positive polarity. When the hail fell, the electric field changed negatively. When the hail ended, the electric field was dominated by negative polarity. A hail event occurred only once and lasted for a long time in the development stage, but in the mature stage, hail fell many times and every time for only a short time, and in the dissipating stage, hail events also occurred many times and each time for a long time. By comparing the radar echoes of the hailstorm cells and normal thunderstorm cells, we found that the area of the 50 dBZ echo in the hailstorm was small, the occurrence time was late, and the duration was short.
关键词	inverted charge structure hail lightning activity Qinghai-Tibet Plateau thunderstorm
英文关键词	ELECTRICAL STRUCTURE; THUNDERSTORM ELECTRIFICATION; POLARITY; DISCHARGES; SYSTEM; STORMS
WOS研究方向	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001131442400001
来源期刊	ATMOSPHERE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282870
作者单位	Chinese Academy of Sciences; China Meteorological Administration; Chinese Academy of Meteorological Sciences (CAMS); Hexi University; Tianshui Normal University
推荐引用方式 GB/T 7714	Li, Yajun,Zhang, Guangshu,Lyu, Weitao,et al. Analysis of Inverted Charge Structure and Lightning Activity during the 8.14 Local Hailstorm on the Qinghai-Tibet Plateau[J],2023,14(12).
APA	Li, Yajun,Zhang, Guangshu,Lyu, Weitao,&Zhao, Yuxiang.(2023).Analysis of Inverted Charge Structure and Lightning Activity during the 8.14 Local Hailstorm on the Qinghai-Tibet Plateau.ATMOSPHERE,14(12).
MLA	Li, Yajun,et al."Analysis of Inverted Charge Structure and Lightning Activity during the 8.14 Local Hailstorm on the Qinghai-Tibet Plateau".ATMOSPHERE 14.12(2023).