为了研究测污激光雷达对水平能见度和垂直气溶胶消光系数变化趋势的探测, 采用污染气体探测激光雷达, 以斜率法和Fernald方法, 反演了301.5nm和446.6nm在水平及垂直方向的消光系数, 以及波长的Angstrom指数。结果表明, 水平方向上, 301.5nm和446.6nm的消光系数和能见度随时间变化均保持一致性; 垂直方向上, 301.5nm和446.6nm气溶胶消光系数随时空变化趋势相同, Angstrom指数随着时间的推移有所变化, 但空间变化趋势相同。该结果对分析差分吸收激光雷达修正气溶胶的影响是有所帮助的。

In order to study the detection of horizontal visibility and vertical aerosol extinction coefficient by monitoring pollutants lidar, the extinction coefficients of 301.5nm and 446.6nm in horizontal and vertical directions and wavelength Angstrom index were retrieved by the slope method and the Fernald method. The result shows that, in the horizontal direction, the extinction coefficients and visibility of 301.5nm and 446.6nm vary with time consistently. In the vertical direction, the extinction coefficients of 301.5nm and 446.6nm follow the same trend in time and space. The Angstrom index has changed with the change of time. But the spatial change trend is the same. The results are helpful to correct the effect of analytical differential absorption lidar on aerosol.