气候变化领域集成服务门户(CCPortal): Nocturnal fine particulate nitrate formation by N 2 O 5 heterogeneous chemistry in Seoul Metropolitan Area; Korea

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DOI	10.1016/j.atmosres.2019.03.028
	Nocturnal fine particulate nitrate formation by N 2 O 5 heterogeneous chemistry in Seoul Metropolitan Area; Korea
	Jo H.-Y.; Lee H.-J.; Jo Y.-J.; Lee J.-J.; Ban S.; Lee J.-J.; Chang L.-S.; Heo G.; Kim C.-H.
发表日期	2019
ISSN	0169-8095
起始页码	58
结束页码	69
卷号	225
英文摘要	This study investigated the potential of fine nitrate (NO 3 − in PM 2.5 ) formation in Seoul Metropolitan Area (SMA) by nighttime dinitrogen pentoxide (N 2 O 5 ) heterogeneous chemistry during March 16–18, 2016, relatively dry and stagnant early spring days, by intervening N 2 O 5 uptake coefficients (reactive uptake probability, γN 2 O 5 ) in modeling with WRF-CMAQ. Simulations of a base case and two sensitivity tests with default (Davis et al., 2008), zero and decupled (tenfold) γN 2 O 5 showed that impacts of γN 2 O 5 on NO 3 − and PM 2.5 are sensitive to relative humidity (RH) and sulfate-nitrate-ammonium (SNA) conditions. The base case simulation generally underestimated NO 3 − and PM 2.5 levels in comparison to observations. Even with decupled γN 2 O 5 , modeled NO 3 − and PM 2.5 concentrations showed relatively small increases under conditions that RH is relatively low in the range of 20 to 40% and SNA levels are severely underestimated (e.g., lower by one third) in the base case simulation. Comparisons of NO 3 − and PM 2.5 concentrations in SMA between simulations with differently specified γN 2 O 5 indicated that N 2 O 5 heterogeneous chemistry has potential to (1) form additional nitric acid (HNO 3 ), (2) further react with ammonia (NH 3 ) emitted from various sources including agricultural sources outside of SMA urban-core areas, and (3) contribute to NO 3 − and PM 2.5 formation in SMA. Additional modeling and observational studies on heterogeneous N 2 O 5 chemistry are needed to improve our understanding of NO 3 − and PM 2.5 formation and better forecast PM 2.5 pollution levels over SMA or other urban areas with abundant nitrogen oxides emissions and ammonia emissions such as agricultural emissions from surrounding areas. © 2019 Elsevier B.V.
英文关键词	CMAQ model; N 2 O 5 heterogeneous chemistry; Nitrate aerosol; PM 2.5 forecasting; Secondary inorganic aerosol; Seoul Metropolitan Area
语种	英语
scopus关键词	Aerosols; Agriculture; Ammonia; Nitrates; Nitrogen oxides; Sulfur compounds; Cmaq models; Heterogeneous chemistry; Nitrate aerosols; Secondary inorganic aerosol; Seoul metropolitan area; Nitric acid; aerosol; atmospheric chemistry; atmospheric modeling; concentration (composition); forecasting method; metropolitan area; nitrate; particulate matter; Seoul [Seoul (ADS)]; Seoul [South Korea]; South Korea
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162106
作者单位	Department of Atmospheric Sciences, Pusan National University, Busan, 609-735, South Korea; Air Quality Forecasting Center, Climate and Air Quality Research Department, National Institute of Environmental Research, Incheon, 22689, South Korea
推荐引用方式 GB/T 7714	Jo H.-Y.,Lee H.-J.,Jo Y.-J.,et al. Nocturnal fine particulate nitrate formation by N 2 O 5 heterogeneous chemistry in Seoul Metropolitan Area; Korea[J],2019,225.
APA	Jo H.-Y..,Lee H.-J..,Jo Y.-J..,Lee J.-J..,Ban S..,...&Kim C.-H..(2019).Nocturnal fine particulate nitrate formation by N 2 O 5 heterogeneous chemistry in Seoul Metropolitan Area; Korea.Atmospheric Research,225.
MLA	Jo H.-Y.,et al."Nocturnal fine particulate nitrate formation by N 2 O 5 heterogeneous chemistry in Seoul Metropolitan Area; Korea".Atmospheric Research 225(2019).