测污激光雷达探测气溶胶消光特性和?ngstr?m指数  

Detection of aerosol extinction characteristics and ?ngstr?m index by monitoring pollutants lidar

作　　者：王杰 陈亚峰 刘秋武 杨杰 黄见 胡顺星[1] WANG Jie;CHEN Yafeng;LIU Qiuwu;YANG Jie;HUANG Jian;HU Shunxing(Key Laboratory of Atmospheric Optics,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China;Science Island Branch of Graduate School,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学院安徽光学精密机械研究所中国科学院大气光学重点实验室,合肥230031 [2]中国科学技术大学研究生院科学岛分院,合肥230026

出　　处：《激光技术》2018年第6期727-732,共6页Laser Technology

基　　金：国家重大科研仪器设备研制专项基金资助项目(41127901);国家自然科学基金资助项目(41575032,41505019)。

摘　　要：为了研究测污激光雷达对水平能见度和垂直气溶胶消光系数变化趋势的探测,采用污染气体探测激光雷达,以斜率法和Fernald方法,反演了301. 5nm和446. 6nm在水平及垂直方向的消光系数,以及波长的?ngstr?m指数。结果表明,水平方向上,301. 5nm和446. 6nm的消光系数和能见度随时间变化均保持一致性;垂直方向上,301. 5nm和446. 6nm气溶胶消光系数随时空变化趋势相同,?ngstr?m指数随着时间的推移有所变化,但空间变化趋势相同。该结果对分析差分吸收激光雷达修正气溶胶的影响是有所帮助的。In order to study the detection of horizontal visibility and vertical aerosol extinction coefficient by monitoring pollutants lidar,the extinction coefficients of 301.5nm and 446.6nm in horizontal and vertical directions and wavelength Angstrom index were retrieved by the slope method and the Fernald method.The result shows that,in the horizontal direction,the extinction coefficients and visibility of 301.5nm and 446.6nm vary with time consistently.In the vertical direction,the extinction coefficients of 301.5nm and 446.6nm follow the same trend in time and space.The Angstrom index has changed with the change of time.But the spatial change trend is the same.The results are helpful to correct the effect of analytical differential absorption lidar on aerosol.

关 键 词：激光技术 气溶胶消光系数 激光雷达 Angstrom指数 

分 类 号：TN958.98[电子电信—信号与信息处理]