大气与环境光学学报, 2011, 6 (4): 287, 网络出版: 2011-07-29
基于MODIS数据的地表温度反演
Land Surface Temperature Retrieved from MODIS Data
地表温度 劈窗算法 地表比辐射率 land surface temperature MODIS MODIS split-window algorithm land surface emissivity
摘要
利用MODIS影像数据,采用劈窗算法来反演安徽地区的地表温度。结合Sobrine、覃志豪等提出的NDVI方法 和地物监督分类方法,对地表比辐射率进行了估算, 将反演结果与NASA的地表温度产品进行比较,平均误差在1 K左右。同时利用卫星过境当天从安徽省高密 度自动监测站获取的实时数据对反演结果进行验证,发现 反演温度与地面实测数据的曲线走势具有高度的一致性且有较高的相关性,能直观地反映安徽地区地表温度的空间分布。
Abstract
The split-window algorithm was recommended to retrieve the land surface temperature of Anhui Province using MODIS image data. Based on the supervised classification methods and the NDVI methods proposed by Sobrino and Qin Zhihao, the land surface emissivity was estimated. The inversion results were compared with NASA land surface temperature products, and the average error was around 1 K. Furthermore, the results were compared with the surface temperature from the corresponding position weather station observation at the same time when satellite transits. The results reveal that they have the same trend and a high correlation, so it can reflect the land surface temperature of Anhui Province intuitively.
杨鹏, 杨世植, 夏鹏. 基于MODIS数据的地表温度反演[J]. 大气与环境光学学报, 2011, 6(4): 287. YANG Peng, YANG Shi-zhi, XIA Peng. Land Surface Temperature Retrieved from MODIS Data[J]. Journal of Atmospheric and Environmental Optics, 2011, 6(4): 287.