基于CALIOP星载激光雷达探测数据的北京沙尘天气大气状况分析  

Study of Atmospheric Condition of Dust Weather in Beijing based on the Data of CALIOP

作　　者：王静[1] 江月松[1] 路小梅[1] 华厚强[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100191

出　　处：《遥感技术与应用》2011年第5期647-654,共8页Remote Sensing Technology and Application

基　　金：国家973计划项目(2011CB707001);北航博士创新基金资助

摘　　要：基于2010年3、4月份的CALIOP(Cloud-Aerosol LiDAR with Orthogonal Polarization)激光雷达后向散射数据,给出了利用交互式数据语言IDL(Interactive Data Language)处理数据的新方法,得出大气后向散射及各参数的空间分布图;在此基础上深入研究了北京地区春季沙尘天气大气分布状况。对沙尘暴在可见光和红外光波段的后向散射、退偏振比以及分布高度的研究结果表明:大气对激光的后向散射信号及各参数的空间分布图可以描绘出大气各组分及其分布情况,如气溶胶、沙尘暴和云等的空间分布情况;利用NILU提供的沙尘暴追踪图,确定了沙尘暴来源,为研究沙尘暴对气候的影响提供了重要依据。Based on the backscattering data of CALIOP（Cloud-Aerosol LiDAR with Orthogonal Polarization） in March and April in 2010,this paper give a new method of data processing using IDL which produce the spatial distribution image of backscatter signals and other parameters.Based on this,it gives the further study of the dust distribution of Beijing in spring.The study of the attenuated backscatter and depolarization ratio as well as the height distribution of the dust storm in the visible light and infrared band shows that：the spatial distribution image of backscatter signals and other parameters when laser transmit in the atmosphere can depict the components of atmosphere and their distribution condition such as that of aerosol,dust storms and clouds.With the tracking figure provided by NILU,this paper concludes the origin of the dust storm and provides an important basis for the impact of dust storm to climate.

关 键 词：激光雷达 沙尘暴 CALIOP 后向散射系数 IDL 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置] X16[自动化与计算机技术—控制科学与工程]