城市对流层气溶胶观测分析与研究

Monitoring and study of city troposhperic aerosol

利用激光雷达测量数据反演出了北京测站和西藏那曲测站上空对流层大气气溶胶散射比和消光系数的垂直分布,利用消光系数和风速数据,进行了相关分析。结果表明,北京测站上空气溶胶的组分、浓度、粒径和分布较那曲呈现更大的不均匀性;西藏那曲地区的空气质量较北京城区要高;那曲测站上空的贴地层高度较北京城区低;北京测站近地面气溶胶消光系数和风速的负相关特性较为明显。

The vertical distribution of aerosol scattering ratios and extinction coefficients over the observation site at Beijing and Naqu are shown, the correlation of extinction coefficient and wind speed are also discussed, and the conclusions are drawn： the distributions and concentrations of aerosol at Beijing are more sophisticated than that at Naqu,the ambient air quality at Naqu is purer than that at Beijing,and the layer is lower than that at Beijing,etc.