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Joint Radio and Optical Observations of the Most Radio-powerful Intracloud Lightning Discharges : Volume 31, Issue 3 (21/03/2013)

By Jacobson, A. R.

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Book Id: WPLBN0004002340
Format Type: PDF Article :
File Size: Pages 18
Reproduction Date: 2015

Title: Joint Radio and Optical Observations of the Most Radio-powerful Intracloud Lightning Discharges : Volume 31, Issue 3 (21/03/2013)  
Author: Jacobson, A. R.
Volume: Vol. 31, Issue 3
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Hamlin, T., L. Ligh, T. E., Nemzek, R., & Jacobson, A. R. (2013). Joint Radio and Optical Observations of the Most Radio-powerful Intracloud Lightning Discharges : Volume 31, Issue 3 (21/03/2013). Retrieved from

Description: Earth and Space Sciences, University of Washington, Washington, USA. The most radio-powerful intracloud lightning emissions are associated with a phenomenon variously called narrow bipolar events or compact intracloud discharges. This article examines in detail the coincidence and timing relationship between, on the one hand, the most radio-powerful intracloud lightning events and, on the other hand, optical outputs (or lack thereof) of the same discharge process. This is done, first, using coordinated very high frequency (VHF) and optical observations from the FORTE satellite and, second, using coordinated sferic and all-sky optical observations from the Los Alamos Sferic Array. In both cases, it is found that the sought coincidences are exceedingly rare. Moreover, in the handful of coincidences between optical and intense radio emissions that have been identified, the radio emissions differ from their usual behavior, by being accompanied by approximately simultaneous conventional lightning radio emissions. It is implied that the most radio-powerful intracloud emission process essentially differs from ordinary incandescent lightning.

Joint radio and optical observations of the most radio-powerful intracloud lightning discharges

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