Temporal variability in fine carbonaceous aerosol over two years in two megacities: beijing and toronto
文献类型：期刊论文
| 作者 | Yang Fumo2,3; Brook, Jeffrey2; He Kebin1; Duan Fengkui1; Ma Yongliang1 |
| 刊名 | Advances in atmospheric sciences
 |
| 出版日期 | 2010-05-01 |
| 卷号 | 27期号:3页码:705-714 |
| 关键词 | Total carbon Pm2.5 Temporal variation Carbonaceous aerosol Beijing Toronto |
| ISSN号 | 0256-1530 |
| DOI | 10.1007/s00376-009-9103-6 |
| 通讯作者 | He kebin(hekb@tsinghua.edu.cn) |
| 英文摘要 | Time-series of weekly total carbon (tc) concentrations of fine aerosol particles (pm2.5) in beijing and toronto were compared to investigate their respective levels and temporal patterns over two years from august 2001 through july 2003. in addition to this comparison, differences in the factors contributing to the observed concentrations and their temporal variations are discussed. based upon past knowledge about the two megacities with highly contrasting air pollutant levels, it is not; surprising that the average tc concentration in beijing (31.5 mu g c m(-3)) was greater than that in toronto by a factor of 8.3. despite their large concentration differences, in both cities tc comprised a similarly large component of pm2.5. tc concentrations exhibited very different seasonal patterns between the two cities. in beijing, tc experienced higher levels and greater weekly fluctuations in winter whereas in toronto this behavior was seen in summer. as a result, the greatest gap in tc concentrations between beijing and toronto (by a factor of 12.7) occurred in winter, while the smallest gap (a factor of 4.6) was in summer. in beijing, seasonal variations in the emissions probably played a greater role than meteorology in influencing the tc seasonality, while in toronto during the warm months more than 80% of the hourly winds were recorded from the south, along with many potential anthropogenic sources for the days with high tc concentrations. this comparison of the differences provides insight into the major factors affecting carbonaceous aerosol in each city. |
| WOS关键词 | ORGANIC AEROSOL ; UNITED-STATES ; AIR-QUALITY ; CHINA ; PM2.5 ; POLLUTION ; IDENTIFICATION ; TRANSPORT ; CANADA ; GASES |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000276839600020 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2405470 |
| 专题 | 中国科学院大学 |
| 通讯作者 | He Kebin |
| 作者单位 | 1.Tsinghua Univ, Dept Environm Sci & Engn, Beijing 100084, Peoples R China 2.Environm Canada, Atmospher Sci & Technol Directorate, Sci & Technol Branch, Toronto, ON M3H 5T4, Canada 3.Chinese Acad Sci, Coll Earth Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang Fumo,Brook, Jeffrey,He Kebin,et al. Temporal variability in fine carbonaceous aerosol over two years in two megacities: beijing and toronto[J]. Advances in atmospheric sciences,2010,27(3):705-714. |
| APA | Yang Fumo,Brook, Jeffrey,He Kebin,Duan Fengkui,&Ma Yongliang.(2010).Temporal variability in fine carbonaceous aerosol over two years in two megacities: beijing and toronto.Advances in atmospheric sciences,27(3),705-714. |
| MLA | Yang Fumo,et al."Temporal variability in fine carbonaceous aerosol over two years in two megacities: beijing and toronto".Advances in atmospheric sciences 27.3(2010):705-714. |
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来源：中国科学院大学
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