【摘要】 星载激光雷达在大气气溶胶探测上具有观测范围大、精度高以及连续测量等优点,对于大气污染监测和气候变化研究具有重要意义.以星载激光雷达CALIOP L1b数据为基础,利用Fernald近端分析法反演了整层大气柱上气溶胶消光系数及其光学厚度.选择武汉市为试验区域,计算了2007年8月至12月期间武汉上空的气溶胶光学厚度,与地面光度计的实测数据比较表明,CALIOP反演的AOD精度较高.更多还原

【Abstract】 The advantages of spaceborne LiDAR system applied in atmospheric aerosol detection are large scope of observation,high precision and consecutive measurements. It is siginifcance in air pollution monitoring and climate change researching. In this paper, the aerosol extinction coefficient and optical thickness of Wuhan area are calculated by Fernald near analysis method. This calculation is based on CALIOP L1b data during August 2007 to December 2007. And the result is compared with the observation data of sunphotometer. The results show that the AOD value retrieved from CALIOP data is preciser than the Sunphotometer’s. The mean absolute error is 0. 042 km.更多还原