Urban heat island, satellite image

Urban heat island, satellite image

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Caption: Urban heat island. Thermal satellite image of Buffalo, New York, USA. Colours indicate surface temperatures, with dark blue coolest, through purple to orange and yellow (hottest). This phenomenon occurs in built-up areas where concrete and other surface materials retain heat for longer than rural areas covered in vegetation or bare ground. Image obtained by the Enhanced Thematic Mapper on NASA's Landsat 7 satellite in August.

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Keywords: 21st century, 3 august 2002, american, buffalo, built-up, city, climatological, climatology, earth observation, enhanced thematic mapper, environmental science, heat retention, hotter, landsat 7, metropolitan area, new york, north america, phenomenon, satellite, satellite image, temperature difference, thermal, uhi, united states, urban, urban heat island, urbanisation, urbanization, usa, warmer

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