长江三角洲地区地表月平均反照率的卫星遥感研究

A Study of Monthly-Mean Surface Albedo of the Yangtze River Delta

摘 要 应用NOAA-AVHRR气象卫星数据，通过近似的大气校正模型及双向反射模型，结合地理信息系统，建立了动态的反照率反演模型，并反演计算了我国长江三角洲地区1995年3～12月的地表反照率。通过对以多影响反照率变化出因子的分析显示，遥感反演结果与地表覆盖特征及气候特征基本相符。

Abstract The difference of land surface features and physical characteristics is mainly mechanism that causes anisolropic distribution of albedo. Using statistic models, bidirectional reflectance models and NOAA14-AVHRR data, we retrieve and analyse the monthly mean albedo of 1995. Land-surface cover type obviously change in every year because of (he human activities. This inevitably makes environment modified and often leads to global climate change though the convection of large-scale atmospheric circulation. So, a study of the land suface albedo has important scientific sense.