| Retrieving historical ambient PM2.5 concentrations using existing visibility measurements in Xi'an, Northwest China | |
| Shen, Zhenxing1,2; Cao, Junji2; Zhang, Leiming3; Zhang, Qian1; Huang, R. -J.2,4,5; Liu, Suixin2; Zhao, Zhuzi2; Zhu, Chongshu2; Lei, Yali1; Xu, Hongmei1; Zheng, Chunli1 | |
| 2016-02-01 | |
| 发表期刊 | ATMOSPHERIC ENVIRONMENT
 |
| 卷号 | 126期号:2016页码:15-20 |
| 文章类型 | Article |
| 摘要 | Long term fine particulate matter (PM2.5) data are needed to assess air quality and climate issues, but PM2.5 data have only been monitored in the recent decade in Chinese cities. Considering strong correlations between PM2.5 and visibility, regression models can be useful tools for retrieving historical PM2.5 data from available visibility data. In this study, PM2.5 and visibility data are both available during 2004-2011 in Xi'an, a megacity in northwest China. Data from 2004 to 2007 were used to develop a regression model and those from 2008 to 2011 were used to evaluate the model. An exponential regression model was then chosen to retrieve the historical PM2.5 data from 1979 to 2003, which were then analyzed together with the measured data from 2004 to 2011 for long term trends. Seasonal PM2.5 increased from 1979 to 2011 with the fastest increase in winter and the slowest in summer. Annual average PM2.5 followed into three distinct periods with a slow decreasing trend from 1979 to 1996, a sharp increasing trend from 1997 to 2006, and a slow decreasing trend from 2007 to 2011. These increasing and decreasing trends are in agreement with the evolution of industrial development in Xi'an. (C) 2015 Elsevier Ltd. All rights reserved. |
| 关键词 | Data Retrieval Pm2.5 Visibility Regression Model |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| DOI | 10.1016/j.atmosenv.2015.11.040 |
| 关键词[WOS] | CHEMICAL-COMPOSITION ; PARTICULATE MATTER ; ATMOSPHERIC VISIBILITY ; IMPAIRED VISIBILITY ; WINTER ; POLLUTANTS ; AEROSOLS ; SITE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:000368958200002 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/5837 |
| 专题 | 粉尘与环境研究室 |
| 作者单位 | 1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710049, Peoples R China 3.Environm Canada, Sci & Technol Branch, Air Qual Res Div, Toronto, ON, Canada 4.Paul Scherrer Inst, Lab Atmospher Chem, CH-5232 Villigen, Switzerland 5.Natl Univ Ireland Galway, Ryan Inst, Ctr Climate & Air Pollut Studies, Univ Rd, Galway, Ireland |
| 推荐引用方式 GB/T 7714 | Shen, Zhenxing,Cao, Junji,Zhang, Leiming,et al. Retrieving historical ambient PM2.5 concentrations using existing visibility measurements in Xi'an, Northwest China[J]. ATMOSPHERIC ENVIRONMENT,2016,126(2016):15-20. |
| APA | Shen, Zhenxing.,Cao, Junji.,Zhang, Leiming.,Zhang, Qian.,Huang, R. -J..,...&Zheng, Chunli.(2016).Retrieving historical ambient PM2.5 concentrations using existing visibility measurements in Xi'an, Northwest China.ATMOSPHERIC ENVIRONMENT,126(2016),15-20. |
| MLA | Shen, Zhenxing,et al."Retrieving historical ambient PM2.5 concentrations using existing visibility measurements in Xi'an, Northwest China".ATMOSPHERIC ENVIRONMENT 126.2016(2016):15-20. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Retrieving historica（840KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 请求全文 | |
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