气候变化领域集成服务门户(CCPortal): Optical Progressing and Electric Field Change Characteristics of Altitude—Triggered Lightning Flash With Different Development Paths

CCPortal

DOI	10.1029/2020JD033774
	Optical Progressing and Electric Field Change Characteristics of Altitude—Triggered Lightning Flash With Different Development Paths
	Cai L.; Li J.; Wang J.; Su R.; Wang F.; Li Q.
发表日期	2021
ISSN	2169897X
卷号	126 期号:11
英文摘要	The characteristics of optical and electric field waveforms from altitude triggered lightning flash at Guangzhou Field Experiment Site for Lightning Research and Testing (GFESLRT) during the summer of 2019 are presented. The altitude triggered lightning flash had eight return strokes with nine M-components along four development paths. And the terminal heights of four paths are over 1,626 m above the ground. Our study presented an arithmetic mean of 0.62 kV/m and an arithmetic mean of 0.63 ms of half-peak width for 16 initial continuous current (ICC) pulses values, as well as an arithmetic mean of 1.24 kV/m and an arithmetic mean of 0.47 ms of half peak width for nine M-components values. The average 2-D speed ranged from 3.80°× 105 to 2.94 × 106 m/s for the attempted leaders and from 1.26 × 106 to 6.96 × 106 m/s for the dart leaders. Basically, the greater the downward leader’s 2-D propagation speed, the larger the electric field change. The electric field waveform in the rising edge of return stroke can be divided into three parts: “SF” indicates the slow front of the return stroke; “FT” indicates the fast transition of the return stroke; “SS” indicates shoulder structure of the return stroke. The arithmetic mean of SF electric field change is 1.45 kV/m and that of SF risetime is 110.6 μs. The arithmetic mean of the first FT electric field change is 4.71 kV/m and that of the first FT risetime is 1.1 μs. The arithmetic mean of the SS electric field change is 3.89 kV/m and that of the SS risetime is 28.1 μs. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	altitude-triggered lightning; electric field; optical progressing
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185150
作者单位	School of Electrical Engineering and Automation, Wuhan University, Wuhan, China
推荐引用方式 GB/T 7714	Cai L.,Li J.,Wang J.,等. Optical Progressing and Electric Field Change Characteristics of Altitude—Triggered Lightning Flash With Different Development Paths[J],2021,126(11).
APA	Cai L.,Li J.,Wang J.,Su R.,Wang F.,&Li Q..(2021).Optical Progressing and Electric Field Change Characteristics of Altitude—Triggered Lightning Flash With Different Development Paths.Journal of Geophysical Research: Atmospheres,126(11).
MLA	Cai L.,et al."Optical Progressing and Electric Field Change Characteristics of Altitude—Triggered Lightning Flash With Different Development Paths".Journal of Geophysical Research: Atmospheres 126.11(2021).