基于Landsat TM图像的北京城市地表温度遥感反演研究  

Urban Land Surface Temperature Retrieval Based on Landsat TM Remote Sensing Images in Beijing

作　　者：宫阿都[1] 江樟焰[1] 李京[1] 陈云浩[1] 胡华浪[1] 

机构地区：[1]北京师范大学资源技术与工程研究所,北京100875

出　　处：《遥感信息》2005年第3期18-20,30,i001,共5页Remote Sensing Information

基　　金：国家自然科学基金(40201036);教育部高等学校博士学科点专项科研基金(20030027014);测绘遥感信息工程国家重点实验室开放基金(WKL(03)0102)资助

摘　　要：利用北京地区LandsatTM热红外波段数据,采用单通道算法反演得到北京地区地面温度分布图。从反演结果可以看出,北京城区地面温度比郊区地表温度高,郊区地表温度较低,密云水库、官厅水库等水体的温度最低,总体上北京城市热岛效应显著。地表比辐射率是通过Van经验公式反演得到,通过对比分析,表明该方法对自然地表的比辐射率反演效果较好。In this paper, urban land surface temperatures (LST) were retrieved by single-channel algorithm based on the 6th band(thermal infrared band) of Landsat TM remote sensing images in Beijing and the LST distribution maps were accomplished according to the retrieval results. The results indicated that the LST of urban center is higher than that of suburb area, the temperature of water is the lowest such as Miyun and Guanting reservoirs, so it is clearly proved that there are the obvious UHI effects in Beijing. In addition, land surface emissivity was retrieved from Van empirical formula and the results represented that there is the better accuracy of emissivity retrieval for natural land surface comparing with other underlying ones.

关 键 词：地表温度反演 LANDSAT TM 单通道算法 城市热岛 北京 

分 类 号：P237.9[天文地球—摄影测量与遥感]