大气与环境光学学报, 2010, 5 (2): 101, 网络出版: 2010-05-31  

合肥地区背景大气气溶胶的偏振激光雷达测量研究

Measurements of Background Aerosol by Polarization Lidar over Hefei
作者单位
中国科学院安徽光学精密机械研究所 中国科学院大气成分与光学重点实验室, 安徽 合肥 230031
摘要
为了研究合肥地区背景大气气溶胶的后向散射特性和偏振特性,利用2007年1月至2009年2月期间无 云晴天偏振激光雷达常规测量数据进行统计分析。结果表明: 合肥地区对流层中、上部气溶胶散射比和大气退偏振比具有明显的季节变化,其均值春季最大、 冬季次之、夏季再次、秋季最小;在春季由于非球形粒子增多, 使得其结果明显偏大。数据分析结果为低对流层米散射激光雷达测量数据反演提供参数选取 依据,并为特殊天气过程大气气溶胶结构层(沙尘层、污染层等) 的深入研究提供有用资料。
Abstract
In order to study backscattering and polarization properties of background aerosol over Hefei, routine observed data by polarization lidar in clear days from Jan. 1, 2007 to Feb. 2, 2009 are analyzed statistically. The results show that aerosol backscatter ratio and depolarization ratio in the middle and upper troposphere over Hefei vary obviously with season, the values of which are biggest in spring, take secondary place in winter, then in summer, least in autumn. In spring, the results show relatively larger values because of increased non-spherical particles. The analysis can provide useful reference for inversion of low troposphere lidar detection data and for research of aerosol layers (dust or pollution) in special weather conditions.
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王珍珠, 谢晨波, 刘博, 周军. 合肥地区背景大气气溶胶的偏振激光雷达测量研究[J]. 大气与环境光学学报, 2010, 5(2): 101. WANG Zhen-zhu, XIE Chen-bo, LIU Bo, ZHOU Jun. Measurements of Background Aerosol by Polarization Lidar over Hefei[J]. Journal of Atmospheric and Environmental Optics, 2010, 5(2): 101.

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