CAJ | 학술논문

陆地表面温度（Land Surface Temperature，LST）是地表能量平衡组分中的一个重要参数。随着卫星遥感技术的快速发展，遥感反演成为获取区域 LST的一个重要手段。目前已有学者提出多种基于遥感数据反演 LST的算法，其中劈窗算法被证明是一种精度较高的算法。基于 Landsat－8卫星30 m空间分辨率的陆地成像仪（OLI）数据和100 m分辨率的热红外传感器（TIRS）数据，采用劈窗算法计算了无锡地区的 LST，并采用地面实测水温数据和同步的 MODIS 温度产品对 Land-sat－8的计算结果进行了验证和对比分析。结果表明：基于 Landsat－8数据和劈窗算法获取的 LST精度较高，误差＜1 K。在计算的 LST结果基础上，进一步提取了热场变异指数来分析城市热岛空间分布特征，给出了城市热岛效应的定量化描述，并就不同地表覆盖类型对热岛效应的影响进行了分析。
륙지표면온도（Land Surface Temperature，LST）시지표능량평형조분중적일개중요삼수。수착위성요감기술적쾌속발전，요감반연성위획취구역 LST적일개중요수단。목전이유학자제출다충기우요감수거반연 LST적산법，기중벽창산법피증명시일충정도교고적산법。기우 Landsat－8위성30 m공간분변솔적륙지성상의（OLI）수거화100 m분변솔적열홍외전감기（TIRS）수거，채용벽창산법계산료무석지구적 LST，병채용지면실측수온수거화동보적 MODIS 온도산품대 Land-sat－8적계산결과진행료험증화대비분석。결과표명：기우 Landsat－8수거화벽창산법획취적 LST정도교고，오차＜1 K。재계산적 LST결과기출상，진일보제취료열장변이지수래분석성시열도공간분포특정，급출료성시열도효응적정양화묘술，병취불동지표복개류형대열도효응적영향진행료분석。
Land Surface Temperature (LST)is an important parameter of surface energy balance components.With the rapid devel-opment of satellite remote sensing technology,satellite remote sensing has become an important approach to retrieving LST over large areas.Various satellite-based retrieval algorithms have been proposed,and the Split-Window algorithm has been proved to be a high precision algorithms.In this study,the LST of Wuxi was retrieved from Landsat-8 data with the SW algorithm.The retrieved LST data were further compared with both simultaneous ground measured temperature data and the MODIS LST product.Results showed that the retrieved LST had good accuracy with errors of less than 1 K.Furthermore,the Thermal Field Variance Composite Index computed from the retrieved LST data was used to analyze the spatial distribution of urban heat island.The urban heat island effect was quantified,and the effects of different land cover types on the heat island were also investigated.