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基于多普勒激光雷达的2011年春季北京地区气溶胶探测实验分析

, PP. 46-51

Keywords: 大气光学,激光雷达,气溶胶,Fernald法,光学厚度

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Abstract:

介绍多普勒激光雷达于2011年3月21日至4月19日期间在北京南郊进行的观测实验,利用Fernald方法对气溶胶消光系数进行了反演和重点分析。结合同一时段探空气球得到的数据,分析大气结构及其变化。观测数据表明在晴朗无云并且大气较为清洁的条件下,气溶胶消光系数从低空向高空平缓递减;遇到多云天气,气溶胶消光系数会在云层处增大;另外,低空的气溶胶消光系数有较明显的日变化特征,早上相较于晚上要低些。实验期间,地面至10km的气溶胶平均光学厚度在0.52。

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