Extreme oxidant amounts produced by lightning in storm clouds

doi:10.1126/science.abg0492

GSTDTAP > 气候变化

DOI	10.1126/science.abg0492
	Extreme oxidant amounts produced by lightning in storm clouds
	W. H. Brune; P. J. McFarland; E. Bruning; S. Waugh; D. MacGorman; D. O. Miller; J. M. Jenkins; X. Ren; J. Mao; J. Peischl
	2021-05-14
发表期刊	Science
出版年	2021
英文摘要	Hydroxyl radicals (OH) are the most important oxidizing species in the atmosphere and provide much of its ability to cleanse itself. It is known that nitric oxide production by lightning leads to the formation of OH and other atmospheric oxidants, such as ozone and hydroperoxyl radicals (HO2), through a variety of chemical reactions. Brune et al. used airborne measurements of OH and HO2 to show that lightning also produces them directly and in amounts much greater than expected. They found that this mechanism may be responsible for as much as one-sixth of the oxidizing capacity of Earth's atmosphere. Science , this issue p. [711][1] Lightning increases the atmosphere’s ability to cleanse itself by producing nitric oxide (NO), leading to atmospheric chemistry that forms ozone (O3) and the atmosphere’s primary oxidant, the hydroxyl radical (OH). Our analysis of a 2012 airborne study of deep convection and chemistry demonstrates that lightning also directly generates the oxidants OH and the hydroperoxyl radical (HO2). Extreme amounts of OH and HO2 were discovered and linked to visible flashes occurring in front of the aircraft and to subvisible discharges in electrified anvil regions. This enhanced OH and HO2 is orders of magnitude greater than any previous atmospheric observation. Lightning-generated OH in all storms happening at the same time globally can be responsible for a highly uncertain, but substantial, 2 to 16% of global atmospheric OH oxidation. [1]: /lookup/doi/10.1126/science.abg0492
领域	气候变化 ; 资源环境
URL	查看原文
引用统计	被引频次：26[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/326815
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	W. H. Brune,P. J. McFarland,E. Bruning,et al. Extreme oxidant amounts produced by lightning in storm clouds[J]. Science,2021.
APA	W. H. Brune.,P. J. McFarland.,E. Bruning.,S. Waugh.,D. MacGorman.,...&J. Peischl.(2021).Extreme oxidant amounts produced by lightning in storm clouds.Science.
MLA	W. H. Brune,et al."Extreme oxidant amounts produced by lightning in storm clouds".Science (2021).