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PM10指能进入呼吸道的质量中值直径小于等于10μm的颗粒物,它是反应环境质量的重要指标,大气中过多的PM10会严重危害身体健康。激光雷达可以测量大气颗粒物消光系数,近地面颗粒物消光系数与颗粒物质量浓度是相关的,利用震荡天平(TEOM)测量近地面的PM10质量浓度,与雷达测量的消光系数建立经验关系,可以推算PM10质量浓度的垂直分布。风廓线雷达可以获得不同高度上的风向风速,将PM10质量浓度与风场数据二者结合可以计算不同高度上颗粒物向城区的输送通量,最终可以估算污染源向城区的输送总量。使用激光雷达技术对北京重要工业污染源进行了长时间的连续监测,获取了颗粒物输送通量等多种参数,给出了连续监测结果。
PM10 refers to the mass median diameter of less than 10μm that can enter the respiratory tract. It is an important indicator of the quality of the reaction environment. Too much PM10 in the atmosphere can seriously endanger the health of the body. Lidar can measure the extinction coefficient of atmospheric particulate matter, and the extinction coefficient of near-surface particulate matter is related to the mass concentration of particulate matter. Employing TEOM to measure the near-surface PM10 mass concentration and experiencing an experiential relationship with the extinction coefficient measured by radar, the PM10 mass Vertical distribution of concentration. Wind profiler radar can obtain wind speed and wind speed at different altitudes. Combining PM10 mass concentration and wind field data can calculate the transport fluxes of particulate matter to the urban area at different heights, and finally the total amount of pollutants transported to the urban area can be estimated. Using laser radar technology, a series of long-term and continuous monitoring of important industrial sources in Beijing were carried out. Various parameters such as particle transport flux were obtained and continuous monitoring results were given.