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Remote Sensing Technology and Application  2005, Vol. 20 Issue (6): 547-550    DOI: 10.11873/j.issn.1004-0323.2005.6.547
    
A Study on the New Algorithms for Retrieving Land Surface Temperature Based on TM6 Data
ZHANG Zhaoming 1,2 , HE Guojin 1, XIAO Rongbo 3,WANG Wei 1, OUYANG Zhiyun 3
(1.Key Lab, China Remote Sensing Satellite Ground Station, Beijing 100086, China ; 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China; 3 .Key Laboratory of System Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences, Beijing 100085, China)
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Abstract  Land surface temperature (LST) retrieval has been a key issue in the thermal infrared remote sensing research area. TM6 data has higher spatial resolution with a pixel size of 120 meters, and it is the only one thermal channel in a Landsat 5 TM scene. For this reason, the previous method of retrieving land surface temperature from TM6 data was based on radiative transfer equation, which seemed to be not practical due to the scarcity of in situ radiosounding data. Thus, in most cases, only at |satellite brightness temperature was obtained from TM6 data. However, there were large differences existed between satellite brightness temperature and the land surface temperature, which resulted in the not good precision of land surface temperature retrieval. While the approaches from the mono window algorithm developed by Qin et al. and the generalized single |channel algorithm proposed by Jiménez |Mu[AKn~]oz and Sobrino make it possible to retrieve land surface temperature from TM6 data with a higher precision. In this paper the two new algorithms were used to retrieve land surface temperature of Beijing city by performing tests on the TM6 data acquired on May 6 2005 respectively. The comparison results between the land surface temperature measured in situ and the retrieved by the algorithms have shown that the significant precisions from both the algorithms are obtained with the root mean square deviation (RMSD) values of 1.38 degrees and 2.18 degrees respectively.
Key words:  Single-channel      Land surface temperature      TM      Beijing      Validation     
Received:  09 June 2005      Published:  17 November 2011
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ZHANG Zhao-Meng
He Guo-Jin
Xiao-Rong-Bei
WANG Wei
OuYang Zhi-Yun

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ZHANG Zhao-Meng, He Guo-Jin, Xiao-Rong-Bei, WANG Wei, OuYang Zhi-Yun. A Study on the New Algorithms for Retrieving Land Surface Temperature Based on TM6 Data . Remote Sensing Technology and Application, 2005, 20(6): 547-550.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2005.6.547     OR     http://www.rsta.ac.cn/EN/Y2005/V20/I6/547

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