气候变化领域集成服务门户(CCPortal): Electrical Discharges Produce Prodigious Amounts of Hydroxyl and Hydroperoxyl Radicals

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DOI	10.1029/2021JD034557
	Electrical Discharges Produce Prodigious Amounts of Hydroxyl and Hydroperoxyl Radicals
	Jenkins J.M.; Brune W.H.; Miller D.O.
发表日期	2021
ISSN	2169897X
卷号	126 期号:9
英文摘要	Reaction with the hydroxyl radical (OH) is often the first step in the removal of many atmospheric pollutants. The nitrogen oxides (NOx) generated by lightning can increase the amount of HOx (HOx = OH + HO2) present in the atmosphere, but direct HOx production from lightning has never been quantitatively investigated in the laboratory. In this laboratory study, prodigious amounts of HOx were generated by both visible and subvisible electrical discharges over ranges of pressure and water vapor mixing ratios relevant to the troposphere. Also measured were NO, total nitrogen oxides (NOx), ozone (O3), and OH exposure, which is the integral of the hydroxyl radical concentration over time since the discharge. HOx and OH exposure were approximately independent of pressure from 360 to 970 hPa and increased only slightly as water vapor increased from 1,000 to 8,000 parts per million volume (ppmv), while NOx was approximately independent of both pressure and water vapor over the same ranges. These laboratory measurements of excessive HOx and OH exposure are similar to measurements of electrically generated HOx discovered in electrified anvil clouds during a 2012 airborne study, thus demonstrating the relevance of these laboratory results to the atmosphere and the importance of understanding the electrically generated HOx contribution to atmospheric oxidation. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	electrical discharges; hydroperoxyl radical; hydroxyl radical; lightning; nitrogen oxides; ozone
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185257
作者单位	Department of Meteorology and Atmospheric Science, Pennsylvania State University, University Park, PA, United States
推荐引用方式 GB/T 7714	Jenkins J.M.,Brune W.H.,Miller D.O.. Electrical Discharges Produce Prodigious Amounts of Hydroxyl and Hydroperoxyl Radicals[J],2021,126(9).
APA	Jenkins J.M.,Brune W.H.,&Miller D.O..(2021).Electrical Discharges Produce Prodigious Amounts of Hydroxyl and Hydroperoxyl Radicals.Journal of Geophysical Research: Atmospheres,126(9).
MLA	Jenkins J.M.,et al."Electrical Discharges Produce Prodigious Amounts of Hydroxyl and Hydroperoxyl Radicals".Journal of Geophysical Research: Atmospheres 126.9(2021).