气候变化领域集成服务门户(CCPortal): Evaluation of Stratospheric Intrusions and Biomass Burning Plumes on the Vertical Distribution of Tropospheric Ozone Over the Midwestern United States

CCPortal

DOI	10.1029/2020JD032454
	Evaluation of Stratospheric Intrusions and Biomass Burning Plumes on the Vertical Distribution of Tropospheric Ozone Over the Midwestern United States
	Wilkins J.L.; de Foy B.; Thompson A.M.; Peterson D.A.; Hyer E.J.; Graves C.; Fishman J.; Morris G.A.
发表日期	2020
ISSN	2169897X
卷号	125 期号:18
英文摘要	Naturally occurring ozone-rich stratosphere-to-troposphere transport (STT) intrusions and biomass burning (BB) plumes reaching the surface can contribute to exceedances of the U.S. National Ambient Air Quality Standards for ground-level ozone (70 ppbv implemented in 2015). Additionally, fires can inject significant pollution into the free troposphere where it can be transported long distances. The combined air quality impacts from these sources on ozone have only been analyzed in a few case studies for the Midwest United States. Here we study ozone impacts in a Midwestern city, for the first time in St. Louis, Missouri, using a series of ozonesonde profiles taken during the Studies of Emissions and Atmospheric Composition, Clouds and Climate Coupling by Regional Surveys (SEAC4RS) field campaign in August–September 2013. All ozonesondes showed enhancements above the background profile levels (~55 ppbv) throughout each tropospheric column. Two models were used to estimate ozone origins in columns. A chemical transport model identified STT enhancements equivalent to 10 to 15 ppbv over the background with a 10% to 15% contribution overall to the column. Two FLEXPART-WRF simulations, one with smoke in the boundary layer and another with smoke above, identified BB enhancements equivalent to 10 to 80 ppbv. Overall, the total BB contribution is 15% to 30% of the total column. Five ozonesondes showed signatures of mixed BB plumes and STT intrusions. During this study period, BB in the western United States contributed 70% to ozone enhancements in the total column compared to 3% from the central United States and 27% from other areas. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	biomass burning; Midwest United States; ozone; plume rise; stratospheric intrusions; tropospheric 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/185744
作者单位	Wildland Fire Sciences, School of Environmental and Forest Sciences, University of Washington, Seattle, WA, United States; Department of Earth and Atmospheric Sciences, Saint Louis University, St. Louis, MO, United States; Earth Sciences Division, NASA/Goddard Space Flight Center, Greenbelt, MD, United States; Naval Research Laboratory, Monterey, CA, United States; Department of Mathematics, Saint Edward's University, Austin, TX, United States
推荐引用方式 GB/T 7714	Wilkins J.L.,de Foy B.,Thompson A.M.,et al. Evaluation of Stratospheric Intrusions and Biomass Burning Plumes on the Vertical Distribution of Tropospheric Ozone Over the Midwestern United States[J],2020,125(18).
APA	Wilkins J.L..,de Foy B..,Thompson A.M..,Peterson D.A..,Hyer E.J..,...&Morris G.A..(2020).Evaluation of Stratospheric Intrusions and Biomass Burning Plumes on the Vertical Distribution of Tropospheric Ozone Over the Midwestern United States.Journal of Geophysical Research: Atmospheres,125(18).
MLA	Wilkins J.L.,et al."Evaluation of Stratospheric Intrusions and Biomass Burning Plumes on the Vertical Distribution of Tropospheric Ozone Over the Midwestern United States".Journal of Geophysical Research: Atmospheres 125.18(2020).