On the initiation of lightning in thunderclouds

Abstract The relationship of lightning and elementary particle fluxes in the thunderclouds is not fully understood to date. Using the particle beams (the so-called Thunderstorm Ground Enhancements – TGEs) as a probe we investigate the characteristics of the interrelated atmospheric processes. The we...

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Autores principales:	Ashot Chilingarian, Suren Chilingaryan, Tigran Karapetyan, Lev Kozliner, Yeghia Khanikyants, Gagik Hovsepyan, David Pokhsraryan, Suren Soghomonyan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a6221b9e01ba4d85bd286a057639a37a
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spelling	oai:doaj.org-article:a6221b9e01ba4d85bd286a057639a37a2021-12-02T12:31:49ZOn the initiation of lightning in thunderclouds10.1038/s41598-017-01288-02045-2322https://doaj.org/article/a6221b9e01ba4d85bd286a057639a37a2017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01288-0https://doaj.org/toc/2045-2322Abstract The relationship of lightning and elementary particle fluxes in the thunderclouds is not fully understood to date. Using the particle beams (the so-called Thunderstorm Ground Enhancements – TGEs) as a probe we investigate the characteristics of the interrelated atmospheric processes. The well-known effect of the TGE dynamics is the abrupt termination of the particle flux by the lightning flash. With new precise electronics, we can see that particle flux decline occurred simultaneously with the rearranging of the charge centers in the cloud. The analysis of the TGE energy spectra before and after the lightning demonstrates that the high-energy part of the TGE energy spectra disappeared just after lightning. The decline of particle flux coincides on millisecond time scale with first atmospheric discharges and we can conclude that Relativistic Runaway Electron Avalanches (RREA) in the thundercloud assist initiation of the negative cloud to ground lightning. Thus, RREA can provide enough ionization to play a significant role in the unleashing of the lightning flash.Ashot ChilingarianSuren ChilingaryanTigran KarapetyanLev KozlinerYeghia KhanikyantsGagik HovsepyanDavid PokhsraryanSuren SoghomonyanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ashot Chilingarian Suren Chilingaryan Tigran Karapetyan Lev Kozliner Yeghia Khanikyants Gagik Hovsepyan David Pokhsraryan Suren Soghomonyan On the initiation of lightning in thunderclouds
description	Abstract The relationship of lightning and elementary particle fluxes in the thunderclouds is not fully understood to date. Using the particle beams (the so-called Thunderstorm Ground Enhancements – TGEs) as a probe we investigate the characteristics of the interrelated atmospheric processes. The well-known effect of the TGE dynamics is the abrupt termination of the particle flux by the lightning flash. With new precise electronics, we can see that particle flux decline occurred simultaneously with the rearranging of the charge centers in the cloud. The analysis of the TGE energy spectra before and after the lightning demonstrates that the high-energy part of the TGE energy spectra disappeared just after lightning. The decline of particle flux coincides on millisecond time scale with first atmospheric discharges and we can conclude that Relativistic Runaway Electron Avalanches (RREA) in the thundercloud assist initiation of the negative cloud to ground lightning. Thus, RREA can provide enough ionization to play a significant role in the unleashing of the lightning flash.
format	article
author	Ashot Chilingarian Suren Chilingaryan Tigran Karapetyan Lev Kozliner Yeghia Khanikyants Gagik Hovsepyan David Pokhsraryan Suren Soghomonyan
author_facet	Ashot Chilingarian Suren Chilingaryan Tigran Karapetyan Lev Kozliner Yeghia Khanikyants Gagik Hovsepyan David Pokhsraryan Suren Soghomonyan
author_sort	Ashot Chilingarian
title	On the initiation of lightning in thunderclouds
title_short	On the initiation of lightning in thunderclouds
title_full	On the initiation of lightning in thunderclouds
title_fullStr	On the initiation of lightning in thunderclouds
title_full_unstemmed	On the initiation of lightning in thunderclouds
title_sort	on the initiation of lightning in thunderclouds
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/a6221b9e01ba4d85bd286a057639a37a
work_keys_str_mv	AT ashotchilingarian ontheinitiationoflightninginthunderclouds AT surenchilingaryan ontheinitiationoflightninginthunderclouds AT tigrankarapetyan ontheinitiationoflightninginthunderclouds AT levkozliner ontheinitiationoflightninginthunderclouds AT yeghiakhanikyants ontheinitiationoflightninginthunderclouds AT gagikhovsepyan ontheinitiationoflightninginthunderclouds AT davidpokhsraryan ontheinitiationoflightninginthunderclouds AT surensoghomonyan ontheinitiationoflightninginthunderclouds
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On the initiation of lightning in thunderclouds

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