主办单位：中国气象局沈阳大气环境研究所
国际刊号：ISSN 1673-503X
国内刊号：CN 21-1531/P
气象与环境学报

气象与环境学报

• 论文 •    下一篇

大气气溶胶粒径分布特征与气象条件的相关性分析

林俊1 刘卫1 李燕1 包良满1 李玉兰1 王广华1 吴伟伟2   

  1. 1.中国科学院上海应用物理研究所，上海 201800; 2.重庆邮电大学，重庆 400065
  • 收稿日期:2008-09-05 修回日期:2008-12-12 出版日期:2009-02-28 发布日期:2009-02-28

Relationship between meteorological conditions and particle size distribution of atmospheric aerosols

LIN Jun1 LIU Wei1 LI Yan1 BAO Liang-man1 LI Yu-lan1 WANG Guang-hua1 WU Wei-wei2   

  1. 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China; 2. Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Received:2008-09-05 Revised:2008-12-12 Online:2009-02-28 Published:2009-02-28

PDF (PC)

1656

被引次数

102

摘要： 通过温度、相对湿度和风速等气象因素与不同粒径大气气溶胶粒子数浓度和质量浓度的相关性，分析气象条件对大气气溶胶的影响和作用机制。结果表明：气象因素对0.2—0.6 μm的气溶胶影响最大。温度升高既有利于增强大气扩散作用也有利于二次气溶胶生成，因此温度与超细气溶胶(小于0.1μm)呈正相关性，而与粒径较大的气溶胶呈负相关。风速主要影响气溶胶的水平扩散，对超细气溶胶无显著影响，而与粗粒径气溶胶呈负相关。相对湿度会促进超细气溶胶的聚积，使之生成较大粒径气溶胶。因此相对湿度与超细气溶胶呈较强的负相关，而与较粗粒径气溶胶呈正相关。

关键词: 大气气溶胶, 粒径分布, 气象条件, 相关性

Abstract: The relationships between meteorological conditions (temperature, relative humidity, wind speed, and etc) and number concentration and mass concentration of atmospheric aerosols were analyzed in order to reveal the effects of meteorological conditions on atmospheric aerosols. The results indicate that the effects of meteorological conditions on aerosols (0.2-0.6 μm) are significant. Increasing temperature is helpful not only to atmospheric diffusion, but also to the formation of the second generation aerosols, so temperature exhibits a positive correlation with ultrafine aerosols (<0.6 μm) and a negative correlation with coarser aerosols. Wind speed can influence the vertical diffusion of aerosols, while it is not significant to ultrafine aerosols. There is a negative correlation between wind speed and coarser aerosols. In addition, relative humidity can promote agglomeration of ultrafine aerosols into coarse aerosols, so it is a negative correlation with ultrafine aerosols and a positive correlation with coarse aerosols.

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