基于太阳光度计的成都双流地区夏季气溶胶光学特性研究

The Studies of Aerosol Optical Properties of Chengdu Shuangliu in Summer Based on the Sun Photometer

选取成都信息工程学院航空港校区为研究区,利用CE318太阳光度计于2013年6月期间连续观测的数据反演气溶胶光学厚度,Angstrom指数和粒子谱分布,然后进行气溶胶光学特性分析,结果表明:气溶胶光学厚度随波长增加而减少;气溶胶光学厚度随人为活动和天气等诸多因素变化而变化;平均波长指数显示该地区气溶胶中小粒子占主控地位,平均直径在1.2μm左右;平均浑浊度系数为0.44,大气处于浑浊状态;粒子谱分布呈双峰型,证明该地区为城市气溶胶类型,也详细表明气溶胶粒径的变化。

The airport of Chengdu University of Information Technology campus is selected as the study area in this paper.Using the data observed continuously by CE-318 Sun photometer in June 2013 to inverse the aerosol optical depth （AOD）,Angstrom index and particle size distribution,and then analyzing the aerosol optical properties.The results show that：the aerosol optical thickness reduces with the increase of the wavelength and changes with the variations of human activities or the surrounding environments; The average wavelength index shows small aerosol particles are in dominance and its average diameter is about 1.2μm; The average turbidity coefficient is 0.44 that means the atmosphere is turbid.The distribution of particle spectrum is bimodal type,which proves the region for the urban aerosol and also shows the changes of aerosol particles size.