车载测污激光雷达对大气边界层气溶胶的斜程探测

Slant Measurements of Atmospheric Boundary Layer Aerosol with Mobile Lidar

利用自行研制的车载测污激光雷达系统 (AML 1)对大气边界层气溶胶进行了斜程探测 ,并给出了与之相应的数据处理方法。将该雷达相近时间内斜程测量与垂直测量的数据进行对比 ,结果表明此斜程探测及数据处理方法是合理可行的。文中列举了某斜程方向 (2 0°天顶角 )气溶胶随时间的演化图 ,以及某垂直剖面内气溶胶消光系数二维扫描图 ,这些典型结果很直观的反映了气溶胶时、空分布情况 ,对实现连续、实时、大范围污染监测有重要意义。

Aerosol measurements in slant range in atmospheric boundary layer are performed by using a mobile pollution detecting lidar system (AML-1). The corresponding data processing method is introduced. By comparing the adjacent measurements performed by this mobile lidar in slant range and vertical range, the results show great feasibility of the slant-range measurement and data processing method. Two typical examples, aerosol extinction coefficients changing with height and time in 20° zenith angle and one two-dimensional scanning, are presented. These graphs show apparent space-time distribution of aerosol extinction coefficients, which is important to realize continual, simultaneous, large-ranged atmospheric pollution detection.