一种基于激光雷达和卫星资料估算地面颗粒物浓度的方法

Method to Estimate Concentration of Surface-level Particulate Matter from Micro Pulse Lidar and Satellite Data

从2013年5月至11月中筛选激光雷达和MODIS大气光学厚度(AOD)资料,提出一种基于激光雷达反演大气气溶胶消光系数廓线,结合MODIS大气光学厚度资料,估算地面颗粒物质量浓度的方法;将该方法与AOD/大气边界层高度(ABLH)方法进行对比,最后将估算的颗粒物浓度与实测值进行比较。研究表明,该方法估算地面颗粒物浓度效果好于AOD/ABLH方法,与实测PM_(2.5)和PM_(10)浓度相关系数分别达到0.8和0.62。两种方法估算得到的地面颗粒物浓度与实测值比较,新方法估算的结果准确性更好。

The Lidar data and Atmopheric Optical Depth（ AOD） of MODIS from April to November,2011 was filtrated,a method to estimate PM-concentrations base on vertical aerosol extinction profiles by MPL and AOD from MODIS was put forward. The method compare then was used to the method by AOD / ABLH. Finally,compared the estimated PM-concentrations with measured value. The results show,compared to the method by AOD / ABLH,the result of estimate PM-concentrations by new method was better. Correlation coefficient between surface extinction by new method with measured PM2. 5and PM10 concentrations is 0. 8 and 0. 62 respectively. Compared the estimated PM-concentrations by the two kind of methods with measured value,degree of accuracy of the new method is better.