A Comprehensive Study on the Improved Radio-Frequency Magnetic Field Measurement for the Initial Upward Leader of a Negative Rocket-Triggered Lightning Flash

doi:10.3390/rs13081533

	A Comprehensive Study on the Improved Radio-Frequency Magnetic Field Measurement for the Initial Upward Leader of a Negative Rocket-Triggered Lightning Flash
	Shi, Tao 2,3; Lu, Gaopeng 1,2,4; Fan, Yanfeng 5; Li, Xiao 6; Zhang, Yang 5
刊名	REMOTE SENSING
	2021-04-01
卷号	13
关键词	radio-frequency magnetic field initial upward leader rocket-triggered lightning
DOI	10.3390/rs13081533
通讯作者	Lu, Gaopeng(gplu@ustc.edu.cn)
英文摘要	The spectrum analysis of the lightning current in the experiment campaign of 2019 reveals that the lightning current waveform contains rich medium-frequency (MF) radiation signals in the initial stage. However, there is a lack of resolution for MF signals by using conventional magnetic sensors. The bandwidth of radio-frequency magnetic field measurement is improved by extending to 20 kHz-1.2 MHz in the Guangdong Comprehensive Observation Experiment on Lightning Discharge (GCOELD). During the previously noticed "quiet period" that can only maintain the upward propagation with relatively small-scale breakdown, magnetic pulses of quiet period (MPQPs) are discerned more clearly than the previous experiment in GCOELD. Aided by the improvement of a magnetic sensor, this paper captures richer magnetic field signals radiated from the weak discharge of the precursory phage than previous experiments in GCOELD. The analysis shows that both aborted UPLs and UPLs are caused by weak discharge pulses called initial precursor pulses (IPPs), which are very similar to the amplitude of the streamer discharge obtained in the laboratory. In summary, the signals detected by an improved magnetic sensor will provide an important reference for exploring the pulse characteristics of the whole discharge process and formation mechanism of the UPL in the initial stage of triggered lightning.
资助项目	National Key R&D Program of China[2017YFC1501501] ; Natural Science Foundation of Excellent Youth Program of China[41622501] ; National Natural Science Foundation of China[41875006] ; National Natural Science Foundation of China[U1938115]
WOS关键词	POSITIVE LEADERS ; STAGE
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:000644681900001
资助机构	National Key R&D Program of China ; Natural Science Foundation of Excellent Youth Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/122354]
专题	中国科学院合肥物质科学研究院
通讯作者	Lu, Gaopeng
作者单位	1.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing 210044, Peoples R China 2.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China 3.Wuhu Meteorol Bur, Wuhu 241000, Peoples R China 4.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Atmospher Opt, HFIPS, Hefei 230031, Peoples R China 5.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China 6.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Middle Atmosphere & Global Environm Obser, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Shi, Tao,Lu, Gaopeng,Fan, Yanfeng,et al. A Comprehensive Study on the Improved Radio-Frequency Magnetic Field Measurement for the Initial Upward Leader of a Negative Rocket-Triggered Lightning Flash[J]. REMOTE SENSING,2021,13.
APA	Shi, Tao,Lu, Gaopeng,Fan, Yanfeng,Li, Xiao,&Zhang, Yang.(2021).A Comprehensive Study on the Improved Radio-Frequency Magnetic Field Measurement for the Initial Upward Leader of a Negative Rocket-Triggered Lightning Flash.REMOTE SENSING,13.
MLA	Shi, Tao,et al."A Comprehensive Study on the Improved Radio-Frequency Magnetic Field Measurement for the Initial Upward Leader of a Negative Rocket-Triggered Lightning Flash".REMOTE SENSING 13(2021).