闫峰, 覃志豪, 李茂松, 王艳姣. 基于MODIS数据的上海市热岛效应研究[J]. 武汉大学学报 ( 信息科学版), 2007, 32(7): 576-580.
引用本文: 闫峰, 覃志豪, 李茂松, 王艳姣. 基于MODIS数据的上海市热岛效应研究[J]. 武汉大学学报 ( 信息科学版), 2007, 32(7): 576-580.
YAN Feng, QIN Zhihao, LI Maosong, WANG Yanjiao. On Urban Heat Island of Shanghai City from MODIS Data[J]. Geomatics and Information Science of Wuhan University, 2007, 32(7): 576-580.
Citation: YAN Feng, QIN Zhihao, LI Maosong, WANG Yanjiao. On Urban Heat Island of Shanghai City from MODIS Data[J]. Geomatics and Information Science of Wuhan University, 2007, 32(7): 576-580.

基于MODIS数据的上海市热岛效应研究

On Urban Heat Island of Shanghai City from MODIS Data

  • 摘要: 采用2003~2005年EOS/MODIS数据,运用分裂窗算法定量反演了上海市地表温度,以间接反映城市热岛的变化规律。研究表明,上海市冬季地表平均最高温度为13.9℃,春季、夏季和秋季分别为32.5℃、45.7℃和29.0℃;地表相对高温区的分布具有明显的季节变化特征,冬季地表相对高温区分布在市区东南方向,春季、夏季地表相对高温区向西北方向移动,秋季地表相对高温区开始向东南方向收缩;冬季市区表现为弱冷岛中心,春季、夏季和秋季均为热岛中心,其中夏季的热岛效应最为显著;冬季弱冷岛中心的地面温度低于郊区温度2.6℃,春季、夏季和秋季的平均热岛强度分别为5.7℃、10.4℃和4.2℃。

     

    Abstract: Based on monthly analyses of EOS/MODIS data(local time 10:30) of Shanghai City,China from 2003 to 2005,land surface temperature(LST) is retrieved with split window algorithm and it is used indirectly to get the quarterly intensity and higher temperature area of urban heat island.Results show that: ① the mean highest LST is 13.9 ℃ in winter and 32.5 ℃,45.7 ℃ and 29.0 ℃ in spring,summer,and autumn,respectively;② the relatively higher LST area distribution has obvious seasonal variation and it moves southeast in winter,northwest in spring and summer,and draws back southeast again in autumn;③ weak urban cold island exists in urban areas during winter mornings;urban heat island exists in spring,summer and autumn;the summer's heat island is the most notable;④ LST of urban cold island centre in winter morning is 2.6 ℃ lower than that of countryside and the mean urban heat island intensity is 5.7 ℃,10.4 ℃ and 4.2 ℃ in spring,summer and autumn,respectively.

     

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