Organic aerosol formation in urban and industrial plumes near Houston and Dallas, Texas

被引：205

作者：

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

Ervens, B. ^{[1
,2
]}

Middlebrook, A. M. ^{[2
]}

Warneke, C. ^{[1
,2
]}

de Gouw, J. A. ^{[1
,2
]}

DeCarlo, P. F. ^{[3
]}

Jimenez, J. L. ^{[1
,4
]}

Brock, C. A. ^{[2
]}

Neuman, J. A. ^{[1
,2
]}

Ryerson, T. B. ^{[2
]}

Stark, H. ^{[1
,2
]}

Atlas, E. ^{[5
]}

Brioude, J. ^{[1
,2
]}

Fried, A. ^{[6
]}

Holloway, J. S. ^{[1
,2
]}

Peischl, J. ^{[1
,2
]}

Richter, D. ^{[6
]}

Walega, J. ^{[6
]}

Weibring, P. ^{[6
]}

Wollny, A. G. ^{[1
]}

Fehsenfeld, F. C. ^{[1
,2
]}

机构：

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

[2] NOAA, Earth Syst Res Lab, Boulder, CO 80309 USA

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

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

[5] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Miami, FL 33149 USA

[6] Natl Ctr Atmospher Res, Earth Observing Lab, Boulder, CO 80307 USA

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES | 2009年 / 114卷

关键词：

MASS-SPECTROMETER; AMBIENT AEROSOL; SOA FORMATION; MEXICO-CITY; EMISSIONS; OZONE; ISOPRENE; INLET; PHOTOOXIDATION; HYDROCARBONS;

D O I：

10.1029/2008JD011493

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

We present measurements of organic aerosol (OA) in urban plumes from Houston and Dallas/Fort Worth as well as in industrial plumes in the Houston area during TexAQS-2006. Consistent with the TexAQS-2000 study, measurements show greater amount of aerosol mass downwind of the industrial centers compared to urban areas. This is likely due to higher emission and processing of volatile organic compounds (VOCs) from the industrial sources along the Houston ship channel. Comparisons of the current measurements with observations from the northeastern (NE) United States indicate that the observed ratios of the enhancement above background in OA, Delta OA, to the enhancement above background in CO, Delta CO, downwind of urban centers of Houston and Dallas/Fort Worth are within a factor of 2 of the same values in plumes from urban areas in the NE United States. In the ship channel plumes, Delta OA/Delta CO exceeds that in the urban areas by factors ranging from 1.5 to 7. We use a chemical box model to simulate secondary organic aerosol (SOA) formation from anthropogenic and biogenic VOCs in different plumes using recently reported dependencies of SOA yields on VOC/NOx ratios. Modeled SOA to CO enhancement ratios are within a factor of 2 of measurements. The increase in SOA from biogenic VOCs (BVOCs) predicted by the chemical box model as well as by a separate analysis using a Lagrangian particle dispersion model (FLEXPART) is <0.7 mu g per standard m(3) (sm(-3)). We find no evidence for a substantial influence of BVOCs on OA formation in our measurements in Houston area.

引用

页数：17

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