Experimental Production of Heat-Island Map with Satellite and Airborne Thermal Infrared Data

The purpose of this study is experimental production of heat-island map with satellite and airborne thermal infrared data. In Japan, at almost of all cities, including not only major cities (i.e. Tokyo, Osaka, population is over one million) but also provincial cities (i.e. Sendai, Nagano, Kofu and so on, population is 100 thousands to 500 thousands), there are heat island phenomenon. Heat island map was made with satellite and airborne thermal infrared data observed day and night. The value of thermal data at daytime was expressed as red color and the value of thermal data at night time was expressed as blue and green color. The map shows heat island phenomenon and structure of city. Buildings with large heat capacity materials are shown with white or blue green color, houses with wood materials (comparatively low heat capacity materials) are shown with red color.