Quantitative relationship between visibility and mass concentration of PM2.5 in Beijing

查看全文 作　　者：WANG Jing-[1]li;ZHANG Yuan-[2]hang;SHAO [2]Min;LIU Xu-[3]lin;ZENG Li-[2]min;CHENG Cong-[1]lan;XU Xiao-[1]feng

机构地区：[1]Institute of Urban Meteorology, China Meteorological Administration, Beijing 100089, China;[2]State Joint Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences, Peking University, Beijing 100871, China;[3]Beijing Meteorological Information and Network Center, Beijing 100089, China

出　　处：《Journal of Environmental Sciences》索引2006年第18卷第3期,共7页

基　　金：The General Project of the Beijing Municipal Natural Science Foundation (No. 8012009) and the Key Project of the BeijingMunicipal Sciences & Technology Commission (No. H020620190091-H020620250230) 摘　　要：The pollution of particulate matter less than 2.5 mm(PM2.5) is a serio us environmental problem in Beijing. The annual average concentration of PM2.5 i n 2001 from seasonal monitor results was more than 6 times that of the U.S. nati onal ambient air quality standards proposed by U.S. EPA. The major contributors to mass of PM2.5 were organics, crustal elements and sulfate. The chemical compo sition of PM2.5 varied largely with season, but was similar at different monitor stations in the same season. The fine particles (PM2.5) cause atmospheric visib ility deterioration through light extinction. The mass concentrations of PM2.5 w ere anti-correlated to the visibility, the best fits between atmospheric visibil ity and the mass concentrations of PM2.5 were somehow different: power in spring , exponential in summer, logarithmic in autumn, power or exponential in winter. As in each season the meteorological parameters such as air temperature and rela tive humidity change from day to day, probably the reason of above correlations between PM2.5 and visibility obtained at different seasons come from the differe nces in chemical compositions of PM2.5. 关键词：大气污染气溶胶空气污染能见度

相关文献

参考文献（13）
引证文献（32）
耦合文献（1211）

参考文献(13)

引证文献(32)

耦合文献(1211)

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

Quantitative relationship between visibility and mass concentration of PM2.5 in Beijing

参考文献(13)

引证文献(32)

耦合文献(1211)

用户提示