维普中文期刊产品整合服务

Estimating the effects of meteorology on PM_(2.5) reduction during the 2008 Summer Olympic Games in Beijing, China

查看全文 作　　者：Liu [1]YANG;Ye [1]WU;Jerry [2]M.DAVIS;Jiming [1]HAO 高影响力作者 机构地区：[1]School of Environment,Tsinghua University,Beijing 100084,China;[2]Office of Air Quality Planning and Standards,Health and Environmental Impacts Division,US Environmental Protection Agency,Raleigh,NC 27513,USA高影响力机构 出　　处：《Frontiers of Environmental Science & Engineering》索引2011年第5卷第3期,共11页高影响力期刊 基　　金：The research described in this paper is supported by the National Natural Science Foundation of China(Grant Nos.50908121 and 20521140077). 摘　　要：Particulate pollution was a critical challenge to the promise of good air quality during the 2008 Beijing Olympic Games,which took place from August 8th to 24th.To ensure good air quality for the Games,several temporary emission control measures were implemented in Beijing and surrounding areas.Ambient particulate matter concentration decreased significantly during the Olympic period;however,it is difficult to distinguish the effectiveness of those control measures since meteorology also affects ambient PM_(2.5) concentration.In this work,a multiple linear regression model based on continuous field monitoring at a roadside site was conducted to evaluate the effects of meteorology and emission control measures on the reduction of PM_(2.5) during the 2008 Olympic Games.The hourly data set was divided into two time periods,the no control period,June 22nd to July 4th,and the control period,July 28th to August 21st.The response variable was PM_(2.5) and the meteorology covariates used in the model were hourly temperature,dew point temperature,wind speed and precipitation.Wind direction was not a significant predictor of PM_(2.5) levels in either the control or the no control period.Using the meteorologically-based regression coefficients from the two time periods,meteorology was found to contribute to at least a 16%reduction in PM_(2.5) levels in the roadside microenvironment;while the pollution control measures contributed to at least a 43%reduction in PM_(2.5) levels. 关 键 词：METEOROLOGY emission control measures Beijing Olympic Games PM_(2.5) linear statistical models
相关文献

参考文献(46)

引证文献(4)

耦合文献(12)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费