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以Landsat ETM+为主要遥感数据源,辅助以气象数据资料,利用NDVI计算出植被覆盖率,继而计算出地表比辐射率,并利用单窗算法精确反演得到了武汉市2002年夏季地表温度。研究表明,武汉城市热岛由武昌、汉口、汉阳三大城区热岛构成,且几乎集中在城区;城区大热岛区中还存在多数热岛效应更为严重的"岛中岛";武汉热岛分布与其下垫面环境有密切的关系。 更多还原

【Abstract】 In this article,the land surface temperature(LST)of Wuhan in summer 2002 was accurately retrieved by mono-window algorithm method,based mainly on Landsat ETM+ data,supplemented by meteorological data.The fractional vegetation cover was calculated by NDVI(normalized difference vegetation index),and estimation for Land Surface Emissivity was measured.The results indicated that urban heat island from Wuhan Wuchang,Hankou and Hanyang constitute the three major urban heat island,there were small heat... 更多还原