气候变化领域集成服务门户(CCPortal): Electrostatic Conditions That Produce Fast Breakdown in Thunderstorms

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DOI	10.1029/2021JD034829
	Electrostatic Conditions That Produce Fast Breakdown in Thunderstorms
	Attanasio A.; da Silva C.; Krehbiel P.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:19
英文摘要	Fast breakdown (FB), a breakdown process composed of systems of high-velocity streamers, has been observed to precede lightning leader formation and play a critical role in lightning initiation. Vigorous FB events are responsible for the most powerful natural radio emissions on Earth, known as narrow bipolar events (NBEs). In this paper, an improved version of the Griffiths and Phelps (1976, https://doi.org/10.1029/jc081i021p03671) model of streamer breakdown is used alongside supervised machine learning techniques to probe the required electric fields and potentials inside thunderstorms to produce FB and NBEs. Our results show that the electrostatic conditions needed to produce (Formula presented.) FB observed in New Mexico at 9 km altitude and (Formula presented.) FB in Florida at 14 km altitude are about the same, each requiring about 100 MV potential difference to propagate 500 m. Additionally, the model illustrates how electric field enhancement ahead of propagating FB can initiate rebounding FB of the opposite polarity. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	fast breakdown; lightning; lightning initiation; machine learning; NBE; streamer
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/236976
作者单位	Department of Physics and Langmuir Laboratory, New Mexico Institute of Mining and Technology, Socorro, NM, United States
推荐引用方式 GB/T 7714	Attanasio A.,da Silva C.,Krehbiel P.. Electrostatic Conditions That Produce Fast Breakdown in Thunderstorms[J],2021,126(19).
APA	Attanasio A.,da Silva C.,&Krehbiel P..(2021).Electrostatic Conditions That Produce Fast Breakdown in Thunderstorms.Journal of Geophysical Research: Atmospheres,126(19).
MLA	Attanasio A.,et al."Electrostatic Conditions That Produce Fast Breakdown in Thunderstorms".Journal of Geophysical Research: Atmospheres 126.19(2021).