IEECAS OpenIR  > 粉尘与环境研究室
Wintertime particulate pollution episodes in an urban valley of the Western US: a case study
Chen, LWA (Chen, L. -W. A.)[1,2]; Watson, JG (Watson, J. G.)[1,2]; Chow, JC (Chow, J. C.)[1,2]; Green, MC (Green, M. C.)[1]; Inouye, D (Inouye, D.)[3]; Dick, K (Dick, K.)[3]
2012-12-30
Source PublicationATMOSPHERIC CHEMISTRY AND PHYSICS
Volume12Issue:21Pages:10051-10064
Subtype期刊论文
Abstract

This study investigates the causes of elevated PM2.5 episodes and potential exceedences of the US National Ambient Air Quality Standards (NAAQS) in Truckee Meadows, Nevada, an urban valley of the Western US, during winter 2009/2010, an unusually cold and snowy winter. Continuous PM2.5 mass and time-integrated chemical speciation data were acquired from a central valley monitoring site, along with meteorological measurements from nearby sites. All nine days with PM2.5 > 35 mu g m(-3) showed 24-h average temperature inversion of 1.5-4.5 degrees C and snow cover of 8-18 cm. Stagnant atmospheric conditions limited wind ventilation while highly reflective snow cover reduced daytime surface heating creating persistent inversion. Elevated ammonium nitrate (NH4NO3) and water associated with it are found to be main reasons for the PM2.5 exceedances. An effective-variance chemical mass balance (EV-CMB) receptor model using locally-derived geological profiles and inorganic/organic markers confirmed secondary NH4NO3 (27-37 %), residential wood combustion (RWC; 11-51 %), and diesel engine exhaust (7-22 %) as the dominant PM2.5 contributors. Paved road dust and de-icing materials were minor, but detectable contributors. RWC is a more important source than diesel for organic carbon (OC), but vice versa for elemental carbon (EC). A majority of secondary NH4NO3 is also attributed to RWC and diesel engines (including snow removal equipment) through oxides of nitrogen (NOx) emissions from these sources. Findings from this study may apply to similar situations experienced by other urban valleys.

DOI10.5194/acp-12-10051-2012
Indexed BySCI
Language英语
Citation statistics
Cited Times:29[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10137
Collection粉尘与环境研究室
Corresponding AuthorChen, LWA (Chen, L. -W. A.)[1,2]
Affiliation1.Division of Atmospheric Sciences, Desert Research Institute, 2215 Raggio Parkway, Reno, NV 89512, USA;
2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences,Xi’an, China;
3.Washoe County District Health Department Air Quality Management Division, Reno, NV, USA
Recommended Citation
GB/T 7714
Chen, LWA ,Watson, JG ,Chow, JC ,et al. Wintertime particulate pollution episodes in an urban valley of the Western US: a case study[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2012,12(21):10051-10064.
APA Chen, LWA ,Watson, JG ,Chow, JC ,Green, MC ,Inouye, D ,&Dick, K .(2012).Wintertime particulate pollution episodes in an urban valley of the Western US: a case study.ATMOSPHERIC CHEMISTRY AND PHYSICS,12(21),10051-10064.
MLA Chen, LWA ,et al."Wintertime particulate pollution episodes in an urban valley of the Western US: a case study".ATMOSPHERIC CHEMISTRY AND PHYSICS 12.21(2012):10051-10064.
Files in This Item:
File Name/Size DocType Version Access License
Wintertime particula(2679KB)期刊论文作者接受稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Chen, LWA (Chen, L. -W. A.)[1,2]]'s Articles
[Watson, JG (Watson, J. G.)[1,2]]'s Articles
[Chow, JC (Chow, J. C.)[1,2]]'s Articles
Baidu academic
Similar articles in Baidu academic
[Chen, LWA (Chen, L. -W. A.)[1,2]]'s Articles
[Watson, JG (Watson, J. G.)[1,2]]'s Articles
[Chow, JC (Chow, J. C.)[1,2]]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Chen, LWA (Chen, L. -W. A.)[1,2]]'s Articles
[Watson, JG (Watson, J. G.)[1,2]]'s Articles
[Chow, JC (Chow, J. C.)[1,2]]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.