DOI: 10.1002/2015GL064203
论文题名: Coordinated lightning, balloon-borne electric field, and radar observations of triggered lightning flashes in North Florida
作者: MacGorman D.R. ; Biggerstaff M.I. ; Waugh S. ; Pilkey J.T. ; Uman M.A. ; Jordan D.M. ; Ngin T. ; Gamerota W.R. ; Carrie G. ; Hyland P.
刊名: Geophysical Research Letters
ISSN: 0094-9611
EISSN: 1944-9342
出版年: 2015
卷: 42, 期: 13 起始页码: 5635
结束页码: 5643
语种: 英语
英文关键词: electric field
; electrification
; lightning
; thunderstorm
; thunderstorm charge
; triggered lightning
Scopus关键词: Balloons
; Charge distribution
; Electric fields
; Electric utilities
; Melting
; Radar
; Storms
; Thunderstorms
; electrification
; International center for lightning research and testing
; Lightning mapping array
; Radar observations
; Triggered flashes
; Triggered lightning
; Vertical channels
; Vertical profile
; Lightning
; atmospheric electricity
; electric field
; electrification
; lightning
; radar
; thunderstorm
; vertical profile
; wavelength
; Florida [United States]
; United States
英文摘要: This study examines coordinated storm and triggered lightning observations made in July-August 2013 at the International Center for Lightning Research and Testing to determine why triggered flashes in Florida typically transition from an upward vertical channel entering the cloud to horizontal structure near the storm's melting level. Data from a balloon-borne electric field meter, a mobile 5cm wavelength radar, and a small-baseline VHF Lightning Mapping Array acquired during a period in which three flashes were triggered on 1 August confirmed the hypothesis that the transition to horizontal lightning structure just above the melting level occurred in a layer of negative charge. This experiment was the first to provide vertical profiles of the electric field in Florida storms, from which their vertical charge distribution could be inferred. Three dissipating storms observed on different days all had negative charge near the melting level, but a growing mature storm had positive charge there. Key Points Florida triggered flashes propagate through negative charge near the melting layer Negative charge is just above the melting layer of dissipating Florida storms Charge distributions are more complex in mature than in dissipating storms. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938150816&doi=10.1002%2f2015GL064203&partnerID=40&md5=736584edf410560682fe8fe25e27591b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9226
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: NOAA National Severe Storms Laboratory, Norman, OK, United States
Recommended Citation:
MacGorman D.R.,Biggerstaff M.I.,Waugh S.,et al. Coordinated lightning, balloon-borne electric field, and radar observations of triggered lightning flashes in North Florida[J]. Geophysical Research Letters,2015-01-01,42(13).