Organic aerosol composition and sources in Pasadena, California, during the 2010 CalNex campaign

被引：225

作者：

Hayes, P. L. ^{[1
,2
]}

Ortega, A. M. ^{[1
,3
]}

Cubison, M. J. ^{[1
,2
]}

Froyd, K. D. ^{[1
,4
]}

Zhao, Y. ^{[5
]}

Cliff, S. S. ^{[5
]}

Hu, W. W. ^{[1
,6
]}

Toohey, D. W. ^{[3
]}

Flynn, J. H. ^{[7
]}

Lefer, B. L. ^{[7
]}

Grossberg, N. ^{[7
]}

Alvarez, S. ^{[7
]}

Rappenglueck, B. ^{[7
]}

Taylor, J. W. ^{[8
]}

Allan, J. D. ^{[8
,9
]}

Holloway, J. S. ^{[1
,4
]}

Gilman, J. B. ^{[1
,4
]}

Kuster, W. C. ^{[4
]}

De Gouw, J. A. ^{[1
,4
]}

Massoli, P. ^{[10
]}

Zhang, X. ^{[11
]}

Liu, J. ^{[11
]}

Weber, R. J. ^{[11
]}

Corrigan, A. L. ^{[12
]}

Russell, L. M. ^{[12
]}

Isaacman, G. ^{[13
]}

Worton, D. R. ^{[13
,14
]}

Kreisberg, N. M. ^{[14
]}

Goldstein, A. H. ^{[13
]}

Thalman, R. ^{[1
,2
]}

Waxman, E. M. ^{[1
,2
]}

Volkamer, R. ^{[1
,2
]}

Lin, Y. H. ^{[15
]}

Surratt, J. D. ^{[15
]}

Kleindienst, T. E. ^{[16
]}

Offenberg, J. H. ^{[16
]}

Dusanter, S. ^{[17
,18
,19
,20
]}

Griffith, S. ^{[17
,18
]}

Stevens, P. S. ^{[17
,18
]}

Brioude, J. ^{[1
,4
]}

Angevine, W. M. ^{[1
,4
]}

Jimenez, J. L. ^{[1
,2
]}

机构：

[1] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA

[2] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA

[3] Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA

[4] NOAA, Div Chem Sci, Boulder, CO USA

[5] Univ Calif Davis, Air Qual Res Ctr, Davis, CA 95616 USA

[6] Peking Univ, Coll Environm Sci & Engn, Beijing 100871, Peoples R China

[7] Univ Houston, Dept Earth & Atmospher Sci, Houston, TX USA

[8] Univ Manchester, Sch Earth Atmospher & Environm Sci, Manchester, Lancs, England

[9] Univ Manchester, Natl Ctr Atmospher Sci, Manchester, Lancs, England

[10] Aerodyne Res Inc, Billerica, MA USA

[11] Georgia Inst Technol, Atlanta, GA 30332 USA

[12] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA

[13] Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA

[14] Aerosol Dynam Inc, Berkeley, CA USA

[15] Univ N Carolina, Dept Environm Sci & Engn, Chapel Hill, NC USA

[16] US EPA, Res Triangle Pk, NC 27711 USA

[17] Indiana Univ, Sch Publ & Environm Affairs, Ctr Res Environm Sci, Bloomington, IN USA

[18] Indiana Univ, Dept Chem, Bloomington, IN USA

[19] Univ Lille Nord France, Lille, France

[20] EMDouai, Douai, France

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES | 2013年 / 118卷 / 16期

基金：

美国国家科学基金会; 英国自然环境研究理事会;

关键词：

organic aerosol; Los Angeles; CalNex; positive matrix factorization; particulates; Pasadena; AIR-POLLUTION SOURCES; POSITIVE MATRIX FACTORIZATION; URBAN SUPERSITE T0; LOS-ANGELES BASIN; NON-FOSSIL CARBON; NEW-YORK-CITY; MEXICO-CITY; MASS-SPECTROMETER; HIGH-RESOLUTION; SOURCE APPORTIONMENT;

D O I：

10.1002/jgrd.50530

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

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/CO 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 cycleafter 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.

引用

页码：9233 / 9257

页数：25

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