摘要
利用洪河湿地2008年5月15日过境的Landsat/TM图像和实测地面数据以及MODIS地表发射率数据,分别运用大气辐射传输模型、覃志豪的单窗算法和Jimenez-Munoz&Sobrino的单波段算法估算洪河湿地的地表温度,并且对比了大气校正前后的NDVI、LSE以及各种算法估算地表温度的差异。分析估算结果表明,覃志豪的单窗算法与实测地面数据估算结果非常一致。指出在没有实时探空数据的情况下,应用只有一个热红外通道的Landsat/TM数据源,采用覃志豪的单窗算法估算的精度是可以接受的。
Based on the measured data, the MODIS LSE product and 1 scene of Landsat TM thermal infrared band（TM6）images of Honghe wetland, which was obtained on May 15 ,2008,the corresponding data of surface temperature were retrieved with three different methods（thermal radiance transfer equation ,mono- window algorithm carried out by Qin Zhihao,mono-window algorithm carried out by Jimenez-Munioz ＆ Sobrino）. The retrieved data are compared and analyzed. Validation analysis was conducted by comparisons of corrected and uncorrected data including NDVI, LSE, LST estimated with the different methods. The resuits show that the data estimated by thermal radiance transfer equation are highly similar to that estimated by mono-window algorithm by Qin Zhihao. Therefore,when the in situ atmospheric profile data are unavailable,the mono-window algorithm by Qin Zhihao can be used to estimate the data of surface temperature from one thermal infrared band of Landsat TM images,and the precision of the retrieved data of surface temperature is acceptable.
出处
《遥感技术与应用》
CSCD
北大核心
2009年第3期312-319,I0003,共9页
Remote Sensing Technology and Application
基金
松嫩平原湿地植被参数高光谱定量遥感研究项目(C08Y46)
中国科学院“东北之春”人才培养计划
国家重点基础研究发展计划(973计划)项目课题(2009CB421103)
