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合肥地区春季卷云退偏特性的偏振激光雷达探测
          
Depolarization properties of cirrus clouds from polarization lidar measurements over Hefei in spring

摘    要
利用自行研制的偏振激光雷达对合肥地区春季卷云的退偏特性进行探测研究。介绍了偏振激光雷达的探测原理,叙述了偏振激光雷达的结构、技术参数和测量方法。统计分析了05~07三年内合肥地区春季卷云云高分布特点及相应高度处卷云退偏振比峰值分布,并分析了05年春季探空温度数据。结果表明,合肥地区位于7~ 12km左右的春季卷云的退偏振比在0.20~0.50之间,而且随着高度增加和温度降低退偏振比有上升的趋势。
标    签 大气光学   偏振激光雷达   卷云   退偏振比   000.2170   010.1290   280.3640  
 
Abstract
A new polarization lidar has been developed for detecting depolarization characteristics of aerosol and cirrus over Hefei (31.90N, 117.16E), China. The fundamental principle of polarization lidar is briefly introduced. Overall structure and specifications of the polarization lidar, as well as measurement method, are described. The observational results of depolarization ratio for cirrus over Hefei from February to May in 2005-2007 are presented and discussed. The exploring temperatures by radiosonde during the spring of 2005 are also presented and analyzed. The results show that the cirrus generally presents in the altitude from 7 to 12 km, and the depolarization ratio varies from 0.2 to 0.5. At the meanwhile, depolarization ratio appears a climbing tendency with the increasing height and the decreasing temperature.

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收稿日期 2007/9/29

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备注This work was supported by the National Basis Research & Development Project of China (No.2006CB403702) and the National Natural Science Foundation of China (No.40475052). Z. Wang’s e-mail address is zzwang@aiofm.ac.cn.

引用该论文: Zhenzhu Wang,Ruli Chi,Bo Liu,Jun Zhou. Depolarization properties of cirrus clouds from polarization lidar measurements over Hefei in spring[J]. 中国光学快报, 2008, 6(4): 235~237


被引情况:


【1】黄旭锋,步扬,王向朝, "基于米氏散射理论的太阳光散射偏振特性",中国激光 37, 3002-3006(2010)

【2】王天河,黄建平, "一种估算沙尘云光学特性的方法",Chinese Optics Letters 7, 368-372(2009)



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