利用颗粒物激光雷达水平扫描污染源分布-实例分析

Practical Analysis of Pollution Source Distribution Using Horizontal Scanning of Particle Lidar

利用激光雷达对丽江市区出现的一次颗粒物轻度污染过程进行观测,反演数据得到颗粒物消光系数和退偏比,对颗粒物在水平方向上的分布特征进行分析,确定污染源相关信息。结果表明,监测点东面1 km附近农田秸秆燃烧和东南面1.7 km处云南XX物流园颗粒物排放两个污染源对本次污染贡献较大。通过激光雷达水平扫描溯源定位污染源,能及时为环境管理部门精准治理提供技术支撑,从而实现源头管理。

LiDAR was used to observe a mild particulate matter pollution process in the urban area of Lijiang.The data was inverted to obtain the extinction coefficient and depolarization ratio of particulate matter to analyze the distribution characteristics of particulate matter in the horizontal direction,and to determine relevant information about the pollution source.The results showed that two sources of pollution,straw burning in the field near 1km east of the monitoring site and particulate matter emission from a Logistics Park 1.7km southeast of the monitoring site,contributed significantly to the pollution.By using laser radar horizontal scanning to trace and locate pollution sources,technical support could be provided for precise governance by environmental management departments in a timely manner,thus achieving source management.