A study of the context in which compact intracloud discharges occur

Abstract The occurrence context of compact intracloud discharges (CIDs) is examined using their electric field waveforms and corresponding NLDN data. A total of 1096 CIDs transporting negative charge upward and 8 CIDs transporting positive charge upward were analyzed. The CIDs were categorized based...

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Autores principales:	Adonis F. R. Leal, Vladimir A. Rakov
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/218e8574f04344ff943d42752ffd62d6
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spelling	oai:doaj.org-article:218e8574f04344ff943d42752ffd62d62021-12-02T15:08:32ZA study of the context in which compact intracloud discharges occur10.1038/s41598-019-48680-62045-2322https://doaj.org/article/218e8574f04344ff943d42752ffd62d62019-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-48680-6https://doaj.org/toc/2045-2322Abstract The occurrence context of compact intracloud discharges (CIDs) is examined using their electric field waveforms and corresponding NLDN data. A total of 1096 CIDs transporting negative charge upward and 8 CIDs transporting positive charge upward were analyzed. The CIDs were categorized based on whether they were isolated or were followed, preceded, or both followed and preceded by other NLDN-reported lightning events. The percentages of isolated CIDs transporting negative charge upward decreased from 92% for 5 km search radius and ±10 ms time window to 31% for 10 km and ±1000 ms, this decrease being accompanied by an increase of the percentage of CIDs preceding (initiating) normal lightning events from 6.8% to 43%. GM NLDN-reported peak currents for isolated CIDs (33 kA) were similar to those initiating normal lightning events (34 kA). Some of our isolated CIDs could be viewed as precursors, because they apparently initiated normal lightning events at essentially the same location after time intervals measured in seconds. CIDs transporting positive charge upward (a) occurred at heights ranging from 16 to 19 km vs. 6 to 16 km for CIDs transporting negative charge upward and (b) had considerably higher NLDN-reported peak currents: 113 kA vs. 33 kA (GM values).Adonis F. R. LealVladimir A. RakovNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-15 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Adonis F. R. Leal Vladimir A. Rakov A study of the context in which compact intracloud discharges occur
description	Abstract The occurrence context of compact intracloud discharges (CIDs) is examined using their electric field waveforms and corresponding NLDN data. A total of 1096 CIDs transporting negative charge upward and 8 CIDs transporting positive charge upward were analyzed. The CIDs were categorized based on whether they were isolated or were followed, preceded, or both followed and preceded by other NLDN-reported lightning events. The percentages of isolated CIDs transporting negative charge upward decreased from 92% for 5 km search radius and ±10 ms time window to 31% for 10 km and ±1000 ms, this decrease being accompanied by an increase of the percentage of CIDs preceding (initiating) normal lightning events from 6.8% to 43%. GM NLDN-reported peak currents for isolated CIDs (33 kA) were similar to those initiating normal lightning events (34 kA). Some of our isolated CIDs could be viewed as precursors, because they apparently initiated normal lightning events at essentially the same location after time intervals measured in seconds. CIDs transporting positive charge upward (a) occurred at heights ranging from 16 to 19 km vs. 6 to 16 km for CIDs transporting negative charge upward and (b) had considerably higher NLDN-reported peak currents: 113 kA vs. 33 kA (GM values).
format	article
author	Adonis F. R. Leal Vladimir A. Rakov
author_facet	Adonis F. R. Leal Vladimir A. Rakov
author_sort	Adonis F. R. Leal
title	A study of the context in which compact intracloud discharges occur
title_short	A study of the context in which compact intracloud discharges occur
title_full	A study of the context in which compact intracloud discharges occur
title_fullStr	A study of the context in which compact intracloud discharges occur
title_full_unstemmed	A study of the context in which compact intracloud discharges occur
title_sort	study of the context in which compact intracloud discharges occur
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/218e8574f04344ff943d42752ffd62d6
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A study of the context in which compact intracloud discharges occur

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