高寒山区地表温度反演算法对比——以疏勒河上游流域为例  

Comparative Study on Land Surface Temperature Retrieval on Alpine Mountainous Cold Regions:A Case Study of Upper Reach of Shule River Basin

作　　者：苌亚平 张世强[4,2] 赵求东[1,2] 

机构地区：[1]中国科学院寒区旱区环境与工程研究所内陆河流域生态水文重点实验室,兰州730001 [2]中国科学院寒区旱区环境与工程研究所冰冻圈科学国家重点实验室,兰州730001 [3]中国科学院大学,北京100049 [4]西北大学城市与环境学院,西安710127

出　　处：《遥感信息》2016年第4期122-128,共7页Remote Sensing Information

基　　金：全球重大科学研究计划(2013CBA01806);冰冻圈科学国家重点实验室自主课题(SKLCS-ZZ-2013-03-01);国家自然科学基金(41130638;41271090)

摘　　要：针对高寒山区地表温度遥感反演误差较大的问题,对比了三种地表温度算法在疏勒河上游流域的适用性。利用2009-2011年9景Landsat-5TM影像和气象数据,对疏勒河上游高寒山区的地表温度进行了反演。地表实测数据与三种地表温度算法及三种比辐射率计算方案下的反演结果进行对比检验的结果表明：辐射传输方程和普适性单通道算法的反演结果均高于实测值,单窗算法的误差最小,采用单窗地表温度算法结合覃志豪等的比辐射率计算方案反演的地表温度与实测结果的一致性最好。对2010年6月9日的不同下垫面类型的地表温度的空间分布分析结果表明,优化组合的地表温度算法反演的地表温度能够反映疏勒河上游山区不同地物的地表温度差别。Aimming at the relative errors of land surface temperature （LST） obtained from remote sensing data on alpine mountains,three retrieval algorithms of LST were applied and compared in the upper reach of Shule River Basin. Landsat-5 TM images and meteorological data from 2009 to 2011 were used to inverse LST. The measured LST were used to compare with the retrieval results of land surface emissivity （LSE） algorithms and three LST retrieval methods. The result shows that the LST obtained by radiative transfer equation method （RTE） and general single channel method （SCM） are both higher than measured values and the error of mono-window algorithm （MWA） is the least. Therefore,LST inversed by MWA and Qins LSE method is closer to the measured values, and MWA has a higher precision on alpine regions. Then LST of different land use types on June 9,2010 were analyzed. It proves that the inversion result by MWA and Qins LSE can better represent the LST distribution in the upper reach of Shule River Basin. Therefore, Qins LSE and MWA can provide reference for the research of land surface parameters on alpine regions.

关 键 词：Landsat-5TM 地表温度算法 地表比辐射率算法 疏勒河上游山区 高寒山区 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]