中国激光, 2011, 38 (s1): s114006, 网络出版: 2012-01-06
双通道偏振激光雷达监测沙尘暴污染及其输送研究
Dual-Channel Polarization Lidar Monitoring of Sandstorm and Its Transportation Research
测量 偏振激光雷达 沙尘污染 消光系数 退偏振度比 measurement polarization lidar sandstorm pollution extinction coefficient polarization ratio
摘要
介绍了双通道偏振激光雷达的特征及主要参数和数据处理方法,并利用该系统对上海世博会开幕式前后的沙尘暴污染过程展开研究,对测量结果进行了分析。结果表明,沙尘暴污染是由西北方向输送,由后向轨迹分析其来源是蒙古地区,并有间歇期,形成了二次沙尘输入过程;沙尘暴后5月份主要风向转为东北风,有利于沙尘污染颗粒物消除。此外将偏振激光雷达测量颗粒物消光系数与地面PM10空气污染指数(API) 对比分析,结果显示两者有很好的一致性。
Abstract
The charactistic, the main parameters and the data processing solution of two-wavelength polarization lidar are introduced. The sand pollution transportration process before and after the opening ceremony for the Shanghai World Expo is studied. The results show that the sandstorm was transported from northwest , by backward trajectories analysis the sandstorm comed from the Inner Mongolia region. The sandstorm ceascced and formend again in the sandstorm transportation. After sandstorm, the main wind direction changed into northeast, which was favorable for removing sand particle. The comparision between extinction coefficient by the polarization lidar measurement and the ground PM10 air pollution index (API) is presented ,which shows the satisfactory coherence of the different method-derived results.
范广强, 刘建国, 张天舒, 董云升, 赵雪松, 谢品华, 刘文清. 双通道偏振激光雷达监测沙尘暴污染及其输送研究[J]. 中国激光, 2011, 38(s1): s114006. Fan Guangqiang, Liu Jianguo, Zhang Tianshu, Dong Yunsheng, Zhao Xuesong, Xie Pinhua, Liu Wenqing. Dual-Channel Polarization Lidar Monitoring of Sandstorm and Its Transportation Research[J]. Chinese Journal of Lasers, 2011, 38(s1): s114006.