青岛近岸海域气溶胶光学厚度观测分析

Observation and Analysis of Aerosol Optical Depth in Qingdao Coastland

利用CE318太阳光度计测量了青岛小麦岛地区2008年4月至2009年3月的气溶胶光学厚度(AOD)数据,分析了青岛近岸海域的气溶胶光学厚度特性。结果表明:气溶胶光学厚度光谱基本满足ngstrm关系,其中大气浑浊度系数κ=0.22±0.07,ngstrm指数υ=1.26±0.23。气溶胶光学厚度的日变化有3种典型趋势,分别是上升型、下降型和凸型。季节变化特点为春、夏季气溶胶光学厚度大,而冬季小。

Based on the data of aerosol optical depths （AOD） measured by a CE-318 sun-photometer in Qingdao from April 2008 to March 2009, aerosol optical properties were analyzed. Results show that the spectrum of aerosol optical depth accords with Angstr6m relation （k=0.22!0.07,u 1.26±0.23）. There are 3 different types of AOD daily variations,which are increasing, decreasing and convex shape. The AOD is higher in Spring and Summer, and lower in Winter.