| 合肥上空卷云和沙尘气溶胶退偏振比的激光雷达探测 |
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| 引用本文： | 刘东,戚福弟,金传佳,岳古明,周军.合肥上空卷云和沙尘气溶胶退偏振比的激光雷达探测[J].大气科学,2003,27(6):1093-1100. |
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| 作者姓名： | 刘东 戚福弟 金传佳 岳古明 周军 |
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| 作者单位： | 中国科学院安徽光学精密机械研究所,合肥,230031 |
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| 摘 要： | 研制了一台L300偏振激光雷达,用于卷云和沙尘气溶胶后向散射光退偏振比的探测研究.介绍了偏振激光雷达的探测原理,叙述了L300偏振激光雷达的结构、技术参数、测量方法和数据处理方法.初步的探测结果表明,合肥西郊上空高度在10 km左右的卷云的退偏振比在0.4～0.5之间,沙尘气溶胶的退偏振比在0.2～0.3范围内,但是剧烈沙尘暴的气溶胶的退偏振比可达到0.4左右.
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| 关 键 词： | 偏振激光雷达 卷云 沙尘气溶胶 |
Polarization Lidar Observations of Cirrus Clouds and Asian Dust Aerosols over Hefei |
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| Liu Dong,Qi Fudi,Jin Chuanji,Yue Guming and Zhou Jun.Polarization Lidar Observations of Cirrus Clouds and Asian Dust Aerosols over Hefei[J].Chinese Journal of Atmospheric Sciences,2003,27(6):1093-1100. |
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| Authors: | Liu Dong Qi Fudi Jin Chuanji Yue Guming and Zhou Jun |
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| Abstract: | A polarization lidar has been developed for measuring profiles of depolarization ratio of cirrus clouds and Asian dust aerosols The fundamental principle of polarization lidar is briefly introduced Overall structure and specifications of the L300 polarization lidar, as well as measurement method, are described The primary observational results over Hefei show that the depolarization ratio for cirrus clouds varies from 0 4 to 0 5 The corresponding ratio for Asian dust aerosols usually varies from 0 2 to 0 3 But, for heavy dust storm, the depolarization ratio for Asian dust aerosols can also reach to 0 4 |
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| Keywords: | polarization lidar cirrus cloud dust aerosol |
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