中国地区气溶胶光学厚度时空分布特征研究

Study on the Time-space Distribution Characteristics of AOD in China

本文基于星载激光雷达(CALIPSO)数据,反演得到气溶胶光学厚度(AOD)。将中国地区划分为东北、华北等7个区域,对各区域不同季节的气溶胶光学厚度进行统计分析。结果显示,各区域气溶胶光学厚度差异较大,其大小与沙尘气溶胶和污染气溶胶的发生频率有较大的相关性;不同季节的气溶胶光学厚度差异较大,其中秋季最大,夏季最小。

The aerosol optical depth（AOD） was inverted based on the data of space-borne lidar（CALIPSO） in the paper.The China region was divided into seven areas,like Northeast,North China and so on.And the statistical analysis on the AOD of different seasons in these areas showed that the AOD of these areas was quite different which was quite influenced by the frequency of occurrence of dust aerosols and pollution aerosols,and the AOD was quite different in seasons,in which the greatest was in autumn and least was in summer.