针对我国大气污染严重和气溶胶多的特点, 文章开展基于差分吸收光谱(DOAS)同时反演大气痕量气体和气溶胶特性方法研究。 从DOAS系统获得的总大气消光信息中, 解析多种痕量气体浓度的同时, 获得大气气溶胶质粒导致的光谱消光； 并基于气溶胶消光信息, 通过查表法反演气溶胶的平均直径、 总个数和总比表面积等物理特性。 实验结果表明该方法可以在获取痕量气体浓度同时, 并能精确反演气溶胶物理特性。

Due to heavy air pollutants and aerosols in our country, the model for simultaneous evaluation of aerosol parameters and trace gases based on differential optical absorption spectroscopy is developed in the present paper. The spectra were used to get the concentrations of many trace gases and mean geometrical diameter, total number concentration and total volume of aerosol simultaneously over the same air volume. Retrieval of aerosol parameters was performed by the “table look-up” method based on total extinction coefficient. Experimental results show that trace gases and aerosol parameters can be successfully retrieved using this model.