globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50530
论文题名:
Organic aerosol composition and sources in Pasadena, California, during the 2010 CalNex campaign
作者: Hayes P.L.; Ortega A.M.; Cubison M.J.; Froyd K.D.; Zhao Y.; Cliff S.S.; Hu W.W.; Toohey D.W.; Flynn J.H.; Lefer B.L.; Grossberg N.; Alvarez S.; Rappenglück B.; Taylor J.W.; Allan J.D.; Holloway J.S.; Gilman J.B.; Kuster W.C.; De Gouw J.A.; Massoli P.; Zhang X.; Liu J.; Weber R.J.; Corrigan A.L.; Russell L.M.; Isaacman G.; Worton D.R.; Kreisberg N.M.; Goldstein A.H.; Thalman R.; Waxman E.M.; Volkamer R.; Lin Y.H.; Surratt J.D.; Kleindienst T.E.; Offenberg J.H.; Dusanter S.; Griffith S.; Stevens P.S.; Brioude J.; Angevine W.M.; Jimenez J.L.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:16
起始页码: 9233
结束页码: 9257
语种: 英语
Scopus关键词: Aerosols ; Air quality ; Climate change ; Oxygen ; Elemental compositions ; Fragmentation reactions ; Multiple measurements ; Organic aerosol compositions ; Photochemical oxidation ; Positive Matrix Factorization ; Proportional relationships ; Secondary organic aerosols ; Urban growth ; aerosol ; air quality ; atmospheric pollution ; chemical composition ; concentration (composition) ; fractionation ; hydrocarbon ; matrix ; measurement method ; oxidation ; quantitative analysis ; California ; Federal District [Mexico] ; Mexico City ; Mexico [North America] ; Pasadena ; United States
英文摘要: Organic aerosols (OA) in Pasadena are characterized using multiple measurements from the California Research at the Nexus of Air Quality and Climate Change (CalNex) campaign. Five OA components are identified using positive matrix factorization including hydrocarbon-like OA (HOA) and two types of oxygenated OA (OOA). The Pasadena OA elemental composition when plotted as H:C versus O:C follows a line less steep than that observed for Riverside, CA. The OOA components from both locations follow a common line, however, indicating similar secondary organic aerosol (SOA) oxidation chemistry at the two sites such as fragmentation reactions leading to acid formation. In addition to the similar evolution of elemental composition, the dependence of SOA concentration on photochemical age displays quantitatively the same trends across several North American urban sites. First, the OA/ΔCO values for Pasadena increase with photochemical age exhibiting a slope identical to or slightly higher than those for Mexico City and the northeastern United States. Second, the ratios of OOA to odd-oxygen (a photochemical oxidation marker) for Pasadena, Mexico City, and Riverside are similar, suggesting a proportional relationship between SOA and odd-oxygen formation rates. Weekly cycles of the OA components are examined as well. HOA exhibits lower concentrations on Sundays versus weekdays, and the decrease in HOA matches that predicted for primary vehicle emissions using fuel sales data, traffic counts, and vehicle emission ratios. OOA does not display a weekly cycle - after accounting for differences in photochemical aging - which suggests the dominance of gasoline emissions in SOA formation under the assumption that most urban SOA precursors are from motor vehicles. © 2013. Her Majesty the Queen in Right of Canada. American Geophysical Union.
资助项目: AGS-1009408 ; ATM-0802237 ; ATM-0931492 ; NE/H008136/1
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63371
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Cooperative Institute for Research in the Environmental Sciences, University of Colorado Boulder, Boulder, CO 80309, United States; Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO, United States; Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, CO, United States; NOAA Chemical Sciences Division, Boulder, CO, United States; Air Quality Research Center, University of California, Davis, CA, United States; College of Environmental Sciences and Engineering, Peking University, Beijing, China; Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX, United States; School of Earth, Atmospheric, and Environmental Sciences, University of Manchester, Manchester, United Kingdom; National Centre for Atmospheric Science, University of Manchester, Manchester, United Kingdom; Aerodyne Research Inc., Billerica, MA, United States; Georgia Institute of Technology, Atlanta, GA, United States; Scripps Institution of Oceanography, University of California, San Diego, San Diego, CA, United States; Department of Environmental Science, Policy and Management, University of California, Berkeley, CA, United States; Aerosol Dynamics Inc., Berkeley, CA, United States; Department of Environmental Sciences and Engineering, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; U.S. Environmental Protection Agency, Research Triangle Park, NC, United States; Center for Research in Environmental Science, School of Public and Environmental Affairs, Indiana University, Bloomington, IN, United States; Université Lille Nord de France, Lille, France; EMDouai, Douai, France

Recommended Citation:
Hayes P.L.,Ortega A.M.,Cubison M.J.,et al. Organic aerosol composition and sources in Pasadena, California, during the 2010 CalNex campaign[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(16)
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