气象2012，Vol.38Issue(9)：1096-1102,7.
2009年秋冬季天津低能见度天气下气溶胶污染特征
Study on the Pollution Characteristics of Aerosols During Low Visibility Weather at Tianjin City in Autumn and Winter 2009
摘要
Abstract
To research the pollution characteristics of aerosols during low visibility weather in Tianjin, the observational data of visibility, PM10 and PM2.5 mass concentrations and meteorological factors in the au- tumn and winter of 2009 were studied. At the same time a case of low visibility was analyzed to find out the evolvement processes and vertical distributions of atmospheric aerosol mass concentrations. The results have indicated that most of low visibility weather cases are in haze, accounting for half of the samples or more. Analysis of the typical low-visibility process has shown that PM2.5 follows a uniform distribution in haze days with significant regional pollution characteristics. The aerosol mass concentration is increased first and then decreased in foggy days because of both hygroscopic growth of aerosols and wet clearing due to the dissolution of soluble components. PM2.5 mass concentrations in the surface layer are more than those in higher layers, depending on the vertical variation of RH and the inversion layer height.关键词
雾/霾/气溶胶/垂直分布/能见度Key words
fog/haze/aerosol/vertical variation/visibility分类
资源环境引用本文复制引用
姚青,蔡子颖,韩素芹,曲平..2009年秋冬季天津低能见度天气下气溶胶污染特征[J].气象,2012,38(9):1096-1102,7.基金项目
国家环境保护公益性行业科研专项（201009001）、公益性行业（气象）科研专项（GYHY201006011）和中国气象局云雾物理环境重点开放实验室开放课题（2009011）共同资助 （）
