study of the relationships between the spatial extent of surface urban heat islands and urban characteristic factors based on landsat etm+ data表面的空间范围之间的关系的研究城市热岛效应和城市特征因素根据陆地卫星etm +数据.pdfVIP

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study of the relationships between the spatial extent of surface urban heat islands and urban characteristic factors based on landsat etm+ data表面的空间范围之间的关系的研究城市热岛效应和城市特征因素根据陆地卫星etm +数据.pdf

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studyoftherelationshipsbetweenthespatialextentofsurfaceurbanheatislandsandurbancharacteristicfactorsbasedonlandsatetmdata表面的空间范围之间的关系的研究城市热岛效应和城市特征因素根据陆地卫星etm数据

Sensors 2008, 8, 7453-7468; DOI: 10.3390/s8117453 OPEN ACCESS sensors ISSN 1424-8220 /journal/sensors Article Study of the Relationships between the Spatial Extent of Surface Urban Heat Islands and Urban Characteristic Factors Based on Landsat ETM+ Data Jinqu Zhang 1, 2 and Yunpeng Wang 1, * 1 State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, P. O. Box 1131, Guangzhou, GD 510640, P.R. China 2 Computer School, South China Normal University, Guangzhou, GD 510631, P.R. China; E-Mail: zjq@ * Author to whom correspondence should be addressed; E-Mail: wangyp@; Tel.: +86-20 Fax: +86-20 Received: 25 July 2008; in revised form: 11 November 2008 / Accepted: 12 November 2008 / Published: 20 November 2008 Abstract: Ten cities with different population and urban sizes located in the Pearl River Delta, Guangdong Province, P.R. China were selected to study the relationships between the spatial extent of surface urban heat islands (SUHI) and five urban characteristic factors such as urban size, development area, water proportion, mean NDVI (Normalized Vegetation Index) and population density, etc. The spatial extent of SUHI was quantified by using the hot island area (HIA). All the cities are almost at the same latitude, showing similar climate and solar radiation, the influence of which could thus be eliminated during our computation and comparative study. The land surface temperatures (LST) were retrieved