Microtops II sun photometers were used to retrieve data on the aerosol optical depth (AOD550) and Angström wavelength exponent (α) over Ebinur Lake region in spring. The results showed that high frequency value of AOD mainly concentrated in 0.1 ~ 0.4Affected by diffusion and sedimentation of salt dust, there were some differences in the aerosol optical properties between Jinghe and Wusu region. The mean values of AOD in Jinghe and Wusu were 0.290 and 0.242 with coefficients of variation were 62.966%, 47.444%, the mean values of α were 0.609 and 0.894 with coefficients of variation were 33.368% and 56.946%, it showed that atmospheric aerosol particle size was relatively large in Jinghe and the particle size of aerosol particles changed significantly in Wusu region; It had a complex relationship between AOD and α; the local dominant wind was the leading factor of dust aerosols. Temperature not played a critical role in the local changes of AOD. When α <0.5, AOD and RH showed a negative correlation in Wusu, while Jinghe area showed a hygroscopic due to the impact of soluble ions in salt dust. When α> 1.0, the hygroscopic growth of fine particles lead to AOD and RH showed a positive correlation trend, When 0.5 <α <1.0, aerosol showed a certain hygroscopic, while when RH> 50%, it was not surprising that rainfall lead to reduced aerosol concentration. The results showed that the high AOD in Jinghe mainly caused by the dust aerosols and the high AOD in Wusu both clustering in the fine mode growth wing and the coarse mode.%利用MicrotopsII太阳光度计观测数据,得到艾比湖流域春季气溶胶光学厚度(AOD550)、Angström波长指数(α).结果显示,艾比湖流域春季AOD主要集中在0.1∼0.4之间；受盐尘迁移过程中粉尘扩散、沉降等影响,精河地区和乌苏地区气溶胶光学性质存在一定差异.精河、乌苏两地AOD平均值分别为0.290和0.242,变异系数分别62.966%和47.444%,α平均值分别为0.609和0.894,变异系数为33.368%和56.946%,精河地区大气气溶胶主控粒子粒径相对较大,而乌苏地区气溶胶粒子的粒径变化幅度相对较大；AOD和α的关系复杂,当地主导风向是沙尘气溶胶的主要来源,温度变化并不是导致艾比湖流域 AOD变化的内在原因；α<0.5时,乌苏地区AOD随RH的增大而减小,精河地区受盐尘中可溶性离子的影响,表现出一定的吸湿性,α>1.0时,细粒子吸湿增长造成AOD随RH的增大而增大,当0.5<α<1.0,气溶胶表现出一定的吸湿性,但当50%展开▼
