Outbreak of Negative Narrow Bipolar Events in Two Mid-Latitude Thunderstorms Featuring Overshooting Tops

doi:10.3390/rs13245130

	Outbreak of Negative Narrow Bipolar Events in Two Mid-Latitude Thunderstorms Featuring Overshooting Tops
	Liu, Feifan 2; Zhu, Baoyou 2; Lu, Gaopeng 1,2; Ma, Ming 2
刊名	REMOTE SENSING
	2021-12-01
卷号	13
关键词	narrow bipolar events (NBEs) overshooting tops electrical remote sensing
DOI	10.3390/rs13245130
通讯作者	Zhu, Baoyou(zhuby@ustc.edu.cn)
英文摘要	Lightning discharges are the electrical production in thunderclouds. They radiate the bulk of radio signals in the very low-frequency and low-frequency (VLF/LF) that can be detected by ground-based receivers. One kind of special intra-cloud lightning discharges known as narrow bipolar events (NBEs) have been shown to be rare but closely linked to the convective activity that leads to hazardous weather. However, there is still lack of understanding on the meteorological conditions for thunderstorm-producing NBEs, especially for those of negative polarity, due to their rare occurrence. In this work, we aim to investigate what meteorological and electrical conditions of thunderclouds favor the production of negative NBEs. Combining with the VLF/LF radio signal measured by Jianghuai Area Sferic Array (JASA), S-band Doppler radar observation and balloon sounding data, two mid-latitude thunderstorms with outbreaks of negative NBEs at midnight in East China were analyzed. The comparison with the vertical radar profile shows that the bursts of negative NBEs occurred near thunderclouds with overshooting tops higher than 18 km. Manifestation of negative NBEs is observed with a relatively low spectrum width near thundercloud tops. Our findings suggest that the detection of negative NBEs would provide a unique electrical means to remotely probe overshooting tops with implications for the exchange of troposphere and stratosphere.
WOS关键词	ELECTRICAL DISCHARGES ; WAVE-FORMS ; WIDTH
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
语种	英语
出版者	MDPI
WOS记录号	WOS:000737375800001
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/127177]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhu, Baoyou
作者单位	1.Chinese Acad Sci, HFIPS, Anhui Inst Opt & Fine Mech, Key Lab Atmospher Opt, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Geospace Environm, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Liu, Feifan,Zhu, Baoyou,Lu, Gaopeng,et al. Outbreak of Negative Narrow Bipolar Events in Two Mid-Latitude Thunderstorms Featuring Overshooting Tops[J]. REMOTE SENSING,2021,13.
APA	Liu, Feifan,Zhu, Baoyou,Lu, Gaopeng,&Ma, Ming.(2021).Outbreak of Negative Narrow Bipolar Events in Two Mid-Latitude Thunderstorms Featuring Overshooting Tops.REMOTE SENSING,13.
MLA	Liu, Feifan,et al."Outbreak of Negative Narrow Bipolar Events in Two Mid-Latitude Thunderstorms Featuring Overshooting Tops".REMOTE SENSING 13(2021).