Global Frequency and Geographical Distribution of Nighttime Streamer Corona Discharges (BLUEs) in Thunderclouds

descriptionPublicationkeyboard_double_arrow_right Article 23 Sep 2021 Spain, Norway, Denmark English Publisher:American Geophysical Union (AGU)Journal:Geophysical Research Letters, volume 48 (issn: 0094-8276, eissn: 1944-8007,

Copyright policy )Funded by:EC | eLightning

Authors: S. Soler; F. J. Gordillo‐Vázquez; F. J. Pérez‐Invernón; A. Luque; D. Li; T. Neubert; O. Chanrion; +3 Authors

doi: 10.1029/2021gl094657

handle: 10261/256348 , 11250/2990089

Global Frequency and Geographical Distribution of Nighttime Streamer Corona Discharges (BLUEs) in Thunderclouds

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Abstract

AbstractBlue LUminous Events (BLUEs) are transient corona discharges occurring in thunderclouds and characterized by strong 337.0 nm light flashes with absent (or weak) 777.4 nm component. We present the first nighttime climatology of BLUEs as detected by the Modular Multispectral Imaging Array of the Atmosphere‐Space Interaction Monitor showing their worldwide geographical and seasonal distribution. A total (land and ocean) of 11 BLUEs occur around the globe every second at local midnight and the average BLUE land/sea ratio is 7:4. The northwest region of Colombia shows an annual nighttime peak. Globally, BLUEs are maximized during the boreal summer‐autumn, contrary to lightning which is maximed in the boreal summer. The geographical distribution of nighttime BLUEs shows three main regions in, by order of importance, the Americas, Europe/Africa and Asia/Australia.

Countries

Spain, Norway, Denmark

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Keywords

Corona discharges, Upper troposphere, 550, Thunderstorms, Lightning

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