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Título: | Multi-Pulse Corona Discharges in Thunderclouds Observed in Optical and Radio Bands |
Autor: | Li, Dongshuai; Luque, Alejandro CSIC ORCID; Lehtinen, Nikolai G.; Gordillo Vázquez, Francisco J. CSIC ORCID ; Neubert, Torsten; Lu, Gaopeng; Chanrion, Olivier; Zhang, Hongbo; Østgaard, Nikolai; Reglero, Víctor | Fecha de publicación: | 16-jul-2022 | Editor: | American Geophysical Union | Citación: | Geophysical Research Letters 49(13): e2022GL098938 (2022) | Resumen: | How lightning initiates inside thunderclouds remains a major puzzle of atmospheric electricity. By monitoring optical emissions from thunderstorms, the Atmosphere-Space Interactions Monitor (ASIM) onboard the International Space Station is providing new clues about lightning initiation by detecting Blue LUminous Events (BLUEs), which are manifestations of electrical corona discharges that sometimes precedes lightning. Here we combine optical and radio observations from a thunderstorm near Malaysia to uncover a new type of event containing multiple optical and radio pulses. We find that the first optical pulse coincides with a strong radio signal in the form of a Narrow Bipolar Event (NBE) but subsequent optical pulses, delayed some milliseconds, have weaker radio signals, possibly because they emanate from a horizontally oriented electrical discharges which does not trigger full-fledged lightning. Our results cast light on the differences between isolated and lightning-initiating electrical discharges. © 2022. The Authors. | Descripción: | This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. | Versión del editor: | http://dx.doi.org/10.1029/2022GL098938 | URI: | http://hdl.handle.net/10261/286231 | DOI: | 10.1029/2022GL098938 | ISSN: | 0094-8276 | E-ISSN: | 1944-8007 |
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