气候变化领域集成服务门户(CCPortal): Urban aerosol chemistry at a land-water transition site during summer - Part 1: Impact of agricultural and industrial ammonia emissions

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DOI	10.5194/acp-21-13051-2021
	Urban aerosol chemistry at a land-water transition site during summer - Part 1: Impact of agricultural and industrial ammonia emissions
	Balasus N.; Battaglia M.A.; Ball K.; Caicedo V.; Delgado R.; Carlton A.G.; Hennigan C.J.
发表日期	2021
ISSN	1680-7316
起始页码	13051
结束页码	13065
卷号	21 期号:17
英文摘要	This study characterizes the impact of the Chesapeake Bay and associated meteorological phenomena on aerosol chemistry during the second Ozone Water-Land Environmental Transition Study (OWLETS-2) field campaign, which took place from 4 June to 5 July 2018. Measurements of inorganic PM2.5 composition, gas-phase ammonia (NH3), and an array of meteorological parameters were undertaken at Hart-Miller Island (HMI), a land-water transition site just east of downtown Baltimore on the Chesapeake Bay. The observations at HMI were characterized by abnormally high NH3 concentrations (maximum of 19.3μgm-3, average of 3.83μgm-3), which were more than a factor of 3 higher than NH3 levels measured at the closest atmospheric Ammonia Monitoring Network (AMoN) site (approximately 45km away). While sulfate concentrations at HMI agreed quite well with those measured at a regulatory monitoring station 45km away, aerosol ammonium and nitrate concentrations were significantly higher, due to the ammonia-rich conditions that resulted from the elevated NH3. The high NH3 concentrations were largely due to regional agricultural emissions, including dairy farms in southeastern Pennsylvania and poultry operations in the Delmarva Peninsula (Delaware-Maryland-Virginia). Reduced NH3 deposition during transport over the Chesapeake Bay likely contributed to enhanced concentrations at HMI compared to the more inland AMoN site. Several peak NH3 events were recorded, including the maximum NH3 observed during OWLETS-2, that appear to originate from a cluster of industrial sources near downtown Baltimore. Such events were all associated with nighttime emissions and advection to HMI under low wind speeds (<1ms-1) and stable atmospheric conditions. Our results demonstrate the importance of industrial sources, including several that are not represented in the emissions inventory, on urban air quality. Together with our companion paper, which examines aerosol liquid water and pH during OWLETS-2, we highlight unique processes affecting urban air quality of coastal cities that are distinct from continental locations. © 2021 The Author(s).
语种	英语
scopus关键词	aerosol; aerosol composition; agricultural emission; air quality; ammonia; concentration (composition); industrial emission; land-sea interaction; marine atmosphere; nitrate; particulate matter; point source; summer; transition zone; urban atmosphere; wind velocity; Baltimore; Chesapeake Bay; Maryland; United States; Acronicta leporina; Virginia
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246616
作者单位	Department of Chemical, Biochemical, and Environmental Engineering, University of Maryland, Baltimore County, Baltimore, MD 21250, United States; Joint Center for Earth Systems Technology, University of Maryland, Baltimore County, Baltimore, MD 21250, United States; Department of Chemistry, University of California, Irvine, CA 92697, United States
推荐引用方式 GB/T 7714	Balasus N.,Battaglia M.A.,Ball K.,et al. Urban aerosol chemistry at a land-water transition site during summer - Part 1: Impact of agricultural and industrial ammonia emissions[J],2021,21(17).
APA	Balasus N..,Battaglia M.A..,Ball K..,Caicedo V..,Delgado R..,...&Hennigan C.J..(2021).Urban aerosol chemistry at a land-water transition site during summer - Part 1: Impact of agricultural and industrial ammonia emissions.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(17).
MLA	Balasus N.,et al."Urban aerosol chemistry at a land-water transition site during summer - Part 1: Impact of agricultural and industrial ammonia emissions".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.17(2021).