Monitoring Aerosol Optical Properties Using Ground Based Remote Sensing and the Change of Atmospheric Environment in Hangzhou Region
Monitoring Aerosol Optical Properties Using Ground Based Remote Sensing and the Change of Atmospheric Environment in Hangzhou Region
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发表时间：
2008
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通讯作者：
C. Ran;Xiao Zhong-yong
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作者：
C. Ran;Xiao Zhong-yong
利用2006年4月至2007年4月在杭州地区4个监测点用CE-318自动跟踪太阳光度计观测的资料，反演了杭州地区气溶胶光学特性，并分析了其时空变化特征，结果表明：随着Angstrom浑浊度系数β的增大，Angstrom波长指数α减小，气溶胶光学厚度（AOD）与β的相关系数达到0.90。气溶胶光学厚度和β值反映了春季大气污染最严重，夏季较清洁，秋末冬初是大气污染的过渡阶段，但受天气条件和地表覆盖特征的影响，两者之间仍存在一定的差异。（ρ（PM_（10），对每小时平均气溶胶光学厚度进行平均以匹配每小时（ρ（PM_（10）数据的相关性，但与日均值的相关性并不好，日均值的相关性仅为0.74。
Based on the data observed at four monitoring sites in Hangzhou region with automatic sun tracing photometer CE-318 during April 2006 to April 2007,the aerosol optical properties were retrieved and its spatial and temporal variability were analyzed.Results indicate that with the increasing of Angstrom turbidity coefficient(β),Angstrom wavelength exponent(α) is decreasing,and the correlation between aerosol optical depth(AOD) and β has reached to(0.90.) Both AOD and β reflect that atmosphere was polluted most severely in spring and was cleaner in summer,and late autumn to early winter is the transition phase.However,there still exist some small differences due to the weather condition and the land cover feature.To compare AOD with(ρ(PM_(10))),the hourly mean AOD was averaged to match the hourly(ρ(PM_(10))) data.Unfortunately,it does not demonstrate a better correlation than that of the daily mean one,and the later's correlation reached 0.74.