气候变化领域集成服务门户(CCPortal): Significant ground-level ozone attributed to lightning-induced nitrogen oxides during summertime over the Mountain West States

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DOI	10.1038/s41612-020-0108-2
	Significant ground-level ozone attributed to lightning-induced nitrogen oxides during summertime over the Mountain West States
	Kang D.; Mathur R.; Pouliot G.A.; Gilliam R.C.; Wong D.C.
发表日期	2020
ISSN	23973722
卷号	3 期号:1
英文摘要	Using lightning flash data from the National Lightning Detection Network with an updated lightning nitrogen oxides (NOx) emission estimation algorithm in the Community Multiscale Air Quality (CMAQ) model, we estimate the hourly variations in lightning NOx emissions for the summer of 2011 and simulate its impact on distributions of tropospheric ozone (O3) across the continental United States. We find that typical summer-time lightning activity across the U.S. Mountain West States (MWS) injects NOx emissions comparable to those from anthropogenic sources into the troposphere over the region. Comparison of two model simulation cases with and without lightning NOx emissions show that significant amount of ground-level O3 in the MWS during the summer can be attributed to the lightning NOX emissions. The simulated surface-level O3 from a model configuration incorporating lightning NOx emissions showed better agreement with the observed values than the model configuration without lightning NOx emissions. The time periods of significant reduction in bias in simulated O3 between these two cases strongly correlate with the time periods when lightning activity occurred in the region. The inclusion of lightning NOx increased daily maximum 8 h O3 by up to 17 ppb and improved model performance relative to measured surface O3 mixing ratios in the MWS region. Analysis of model results in conjunction with lidar measurements at Boulder, Colorado during July 2014 corroborated similar impacts of lightning NOx emissions on O3 air quality. The magnitude of lightning NOx emissions estimated for other summers is comparable to the 2011 estimates suggesting that summertime surface-level O3 levels in the MWS region could be significantly influenced by lightning NOx. © 2020, This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply.
语种	英语
scopus关键词	air quality; algorithm; atmospheric chemistry; lightning; nitrogen oxides; ozone; summer; troposphere; United States
来源期刊	npj Climate and Atmospheric Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178058
作者单位	Center for Environmental Measurement and Modeling, U.S. Environmental Protection Agency, Research Triangle Park, NC, United States
推荐引用方式 GB/T 7714	Kang D.,Mathur R.,Pouliot G.A.,et al. Significant ground-level ozone attributed to lightning-induced nitrogen oxides during summertime over the Mountain West States[J],2020,3(1).
APA	Kang D.,Mathur R.,Pouliot G.A.,Gilliam R.C.,&Wong D.C..(2020).Significant ground-level ozone attributed to lightning-induced nitrogen oxides during summertime over the Mountain West States.npj Climate and Atmospheric Science,3(1).
MLA	Kang D.,et al."Significant ground-level ozone attributed to lightning-induced nitrogen oxides during summertime over the Mountain West States".npj Climate and Atmospheric Science 3.1(2020).