Resolution of the sprite polarity paradox: The role of halos

NCUIR > College of Earth Sciences > DEPARTMENT OF SPACE SCIENCE AND ENGINEERING > journal & Dissertation > Item 987654321/102296

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/102296

Title:	Resolution of the sprite polarity paradox: The role of halos
Authors:	郭政靈;Williams, E.;Kuo, C.-L.;Bór, J.;Sátori, G.;Newsome, R.;Adachi, T.;Boldi, R.;Chen, A.;Downes, E.;Hsu, R. R.;Lyons, W.;Saba, M. M. F.;Taylor, M.;Su, H. T.
Contributors:	地球科學學院太空科學與工程學系
Keywords:	Atmospheric sciences;Electric fields;halo;Lightning;paradox;Polarity;Radio;Remote sensing;sprite
Date:	2012-04-04
Issue Date:	2026-04-23 11:05:51 (UTC+8)
Publisher:	Wiley-Blackwell;Washington: Blackwell Publishing Ltd
Abstract:	摘要： This study revisits the sprite polarity paradox, first manifest by observations that exceptional cloud‐to‐ground flashes with negative polarity generally did not produce detectable sprites. The paradox is here resolved by the Transient Luminous Event (TLE) known as the halo, which on account of its inferior brightness (0.3 MR versus 1.5 MR) and substantially shorter duration (1 ms versus 10–100 ms) in comparison with the sprite, is not readily detectable in ground‐based video cameras with standard field duration (16.7–20 ms). Observations with improved temporal resolution (ISUAL (Imager of Sprites and Upper Atmospheric Lightnings) from space and PIPER (Photometric Imager of Precipitated Electron Radiation) observations from the ground) provide evidence that flashes with negative polarity dominate the global halo population, and that the halo numbers are more than sufficient to account for the previously missing TLEs. The evidence for lightning polarity‐dependent TLEs (sprites, positive and halos, negative) is attributable to the well established but incompletely understood contrast in the behavior of negative and positive lightning flashes to ground. 其他題名： Radio Sci 出版者： Washington: Blackwell Publishing Ltd 出版日期： 2012-04 出處： Radio Science, 2012-04, Vol.47 (2), p.RS2002--n/a 資源來源： Wiley Online Library 版權： Copyright 2012 by the American Geophysical Union 識別號： ISSN: 0048-6604 識別號： EISSN: 1944-799X 識別號： DOI: 10.1029/2011RS004794
Appears in Collections:	[DEPARTMENT OF SPACE SCIENCE AND ENGINEERING] journal & Dissertation

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