气候变化领域集成服务门户(CCPortal): Regional sources of airborne ultrafine particle number and mass concentrations in California

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DOI	10.5194/acp-19-14677-2019
	Regional sources of airborne ultrafine particle number and mass concentrations in California
	Yu X.; Venecek M.; Kumar A.; Hu J.; Tanrikulu S.; Soon S.-T.; Tran C.; Fairley D.; Kleeman M.J.
发表日期	2019
ISSN	16807316
起始页码	14677
结束页码	14702
卷号	19 期号:23
英文摘要	Regional concentrations and source contributions are calculated for airborne particle number concentration (Nx) and ultrafine particle mass concentration (PM0:1) in the San Francisco Bay Area (SFBA) and the South Coast Air Basin (SoCAB) surrounding Los Angeles with 4 km spatial resolution and daily time resolution for selected months in the years 2012, 2015, and 2016. Performance statistics for daily predictions of N10 concentrations meet the goals typically used for modeling of PM2.5 (mean fractional bias (MFB) < ±0:5 and mean fractional error (MFE) < 0.75). The relative ranking and concentration range of source contributions to PM0.1 predicted by regional calculations agree with results from receptor-based studies that use molecular markers for source apportionment at four locations in California. Different sources dominated regional concentrations of N10 and PM0.1 because of the different emitted particle size distributions and different choices for heating fuels. Nucleation (24 %-57 %) made the largest single contribution to N10 concentrations at the 10 regional monitoring locations, followed by natural gas combustion (28 %-45 %), aircraft (2 %-10 %), mobile sources (1 %-5 %), food cooking (1 %-2 %), and wood smoke (0 %-1 %). In contrast, natural gas combustion (22 %-52 %) was the largest source of PM0.1 followed by mobile sources (15 %-42 %), food cooking (4 %-14 %), wood combustion (1 %-12 %), and aircraft (2 %-6 %). The study region encompassed in this project is home to more than 25 million residents, which should provide sufficient power for future epidemiological studies on the health effects of airborne ultrafine particles. All of the PM0:1 and N10 outdoor exposure fields produced in the current study are available free of charge at http://webwolf.engr.ucdavis.edu/data/soa_v3/hourly_avg/(last access: 20 November 2019). © 2019 Author(s).
语种	英语
scopus关键词	aerosol; concentration (composition); particle size; particulate matter; size distribution; source apportionment; California; San Francisco Bay; South Coast Air Basin; United States
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/143996
作者单位	Department of Civil and Environmental Engineering, University of California, Davis, One Shields Avenue, Davis, CA, United States; Department of Land Air, and Water Resources, University of California, Davis, One Shields Avenue, Davis, CA, United States; School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, China; Bay Area Air Quality Management District, San Francisco, CA, United States
推荐引用方式 GB/T 7714	Yu X.,Venecek M.,Kumar A.,et al. Regional sources of airborne ultrafine particle number and mass concentrations in California[J],2019,19(23).
APA	Yu X..,Venecek M..,Kumar A..,Hu J..,Tanrikulu S..,...&Kleeman M.J..(2019).Regional sources of airborne ultrafine particle number and mass concentrations in California.Atmospheric Chemistry and Physics,19(23).
MLA	Yu X.,et al."Regional sources of airborne ultrafine particle number and mass concentrations in California".Atmospheric Chemistry and Physics 19.23(2019).