车载激光雷达对北京地区边界层污染监测研究  

Measurement of Atmospheric Boundary Layer Pollutants by Mobile Lidar in Beijing

作　　者：汪少林[1] 谢品华[1] 胡顺星[1] 魏合理[1] 胡欢陵[1] 谢军[1] 曹开法[1] 方欣[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所大气光学中心

出　　处：《环境科学》2008年第3期562-568,共7页Environmental Science

基　　金：北京市科学技术委员会大气污染控制专项(Z0005190042791)

摘　　要：介绍了自行研制的车载差分激光雷达AML-2探测原理及技术参数,于2006-08、2006-09在不同天气因素条件下对北京西南郊榆垡地区大气边界层污染物O3、NO2、SO2进行了实时监测,对比分析了3种污染物浓度垂直分布及日变化特征.结果表明,无外来污染输送时,3种污染物在阴雨天气总体浓度较小,O3和NO2浓度随高度升高而减小,SO2浓度垂直分布少见此特征,但在近地面0.6 km左右有较强SO2污染层.南部气流输送对北京地区大气环境影响明显,2006-08-23-2006-08-25这次强污染气流输送高度约1-1.5 km,3种污染物浓度垂直分布及日变化特征受到干扰,北京榆垡地区边界层O3、NO2、SO2总体浓度明显上升.The parameters of AML-2 mobile lidar were introduced, which was based on differential absorption principle and designed by our institute. In Yufa of Beijing, the pollutants including O3 , NO2 , SO2 in atmospheric boundary layer were monitored in August and September of 2006 under different weather conditions. Vertical profile and diurnal variation of concentrations of these pollutants were analyzed, ff without the influence of pollution air transport from south region, the concentrations of these pollutants are low under the overcast weather condition. The concentrations of O3 and NO2 decrease with altitude, and this characteristic is not obvious for SO2, but there is a high concentration layer of SO2 near ground （about 0.6km）. The quality of atmosphere Beijing is influenced significantly by air transportation from south region, and the altitude of the severe pollution air transport is about lkm to 1 .Skm in August 23rd to 25th. As a result, the characteristics of vertical profile and daily variation of the pollutants are changed, and the concentrations of O3, NO2, SO2 in atmospheric boundary layer of Yufa area increased obviously.

关 键 词：大气环境 激光雷达 边界层 O3 NO2 SO2 

分 类 号：X831[环境科学与工程—环境工程]