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DOI	10.1029/2020JD033765
	Thunderstorms Producing Sferic-Geolocated Gamma-Ray Flashes Detected by TETRA-II
	Smith D.; Trepanier J.; Alnussirat S.T.; Cherry M.L.; Legault M.D.; Pleshinger D.J.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:15
英文摘要	The terrestrial gamma-ray flash (TGF) and Energetic Thunderstorm Rooftop Array (TETRA-II) detected 22 X-ray/gamma-ray flash events associated with lightning between October 2015 and March 2019 across three ground-based detector locations in subtropical and tropical climates in Louisiana, Puerto Rico, and Panama. Each detector array consists of a set of bismuth germanate scintillators that record X-ray and gamma-ray bursts over the energy range 50 keV–6 MeV (million electron volts). TETRA-II events have characteristics similar to both X-ray bursts associated with lightning leaders and TGFs: sub-millisecond duration, photons up to MeV energies, and association with nearby lightning (typically within 3 km). About 20 of the 22 events are geolocated to individual lightning strokes via spatiotemporally coincident sferics. An examination of radar reflectivity and derived products related to events located within the Next Generation Weather Radar (NEXRAD) monitoring region indicates that events occur within mature cells of severe and non-severe multicellular and squall line thunderstorms, with core echo tops which are at or nearing peak altitude. Events occur in both high lightning frequency thunderstorm cells and low lightning frequency cells. Events associated with high frequency cells occur within 5 min of significant lightning jumps. Among NEXRAD-monitored events, hail is present within 8 km and 5 min of all except a single low-altitude cold weather thunderstorm. An association is seen with maximum thunderstorm development, lightning jumps, and hail cells, indicating that the TETRA-II X-ray/gamma-ray events are associated with the peak storm electrification and development of electric fields necessary for the acceleration of electrons to high energies. © 2021. The Authors.
英文关键词	atmospheric electricity; gamma-ray bursts; lightning; terrestrial gamma ray flashes; thunderstorms
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/237094
作者单位	Department of Geography & Anthropology, Louisiana State University, Baton Rouge, LA, United States; Department of Physics & Astronomy, Louisiana State University, Baton Rouge, LA, United States; Department of Physics, University of Puerto Rico at Bayamón, Bayamón, PR, United States; Department of Pharmacology, Center for Lung Biology, University of South Alabama, Mobile, AL, United States
推荐引用方式 GB/T 7714	Smith D.,Trepanier J.,Alnussirat S.T.,et al. Thunderstorms Producing Sferic-Geolocated Gamma-Ray Flashes Detected by TETRA-II[J],2021,126(15).
APA	Smith D.,Trepanier J.,Alnussirat S.T.,Cherry M.L.,Legault M.D.,&Pleshinger D.J..(2021).Thunderstorms Producing Sferic-Geolocated Gamma-Ray Flashes Detected by TETRA-II.Journal of Geophysical Research: Atmospheres,126(15).
MLA	Smith D.,et al."Thunderstorms Producing Sferic-Geolocated Gamma-Ray Flashes Detected by TETRA-II".Journal of Geophysical Research: Atmospheres 126.15(2021).