Analyses of Composite Observations of Optical Properties of Atmospheric Aerosols in the Late Summer over Some Areas of North China
北方局地夏末气溶胶光学特性综合观测分析

The composite observations -with a dust counter and solar spectrometer for optical remote sensing of atmospheric aerosol optical properties have been conducted in late summer in three places of North China; Innermongolia Grassland Ecosystem Research Station, Beijing and Xinxiang. The three places are at nearly the same longtitude but different latitudes. The results show that the concentrations of aerosol particles both in the near surface layer and in the Whole atmospheric layer carry obvious geographical characteristic. Namely, the tWo concentrations are most heaVy in Xinxiang, median in Beijing and smallest in Innermongolia. A parametCrized concentration ratio is presented in this paper for the first time, which can be used to quantify the relative contribution of the surface aerosol sources to the whole atmospheric column aerosols. It can be found that the surface aerosol source in Innermongolia is weaker because of less human activity. The reasons for heaVy concentration of atmospheric aerosols in Xinxiang are its geographical position near by the Yellow myer which evaporates an enormous amount of water into the atmosphere to facilitate the generation of aerosols as well as its serious urban air pollution.