中文摘要：

通过探讨温度、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0．2-0．6um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的生成，因此温度与超细气溶胶（小于0．1um）呈正相关，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。

英文摘要：

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 （0.2-0.6um） 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 ultrafme aerosols （ 〈 0.6um） 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.