Application of remote sensing technologies to time series analyses of surface temperatures in Daegu city

摘要

This study intended to develop a new method for the analysis and assessment of city surface temperatures (ST). Landsat data from 1994 to 2003 were used, and Daegu, Korea, was selected as the study region. Surface temperature difference(STD) distribution diagrams were prepared and verified, based on the surface temperatures of wide and flat playgrounds of schools. The surface temperatures of the entire city were rearranged as an axis to enable temporal and spatial analysis of surface temperatures. STD distributions in relation to land-cover could be seen. The reason why the STD of rice paddies existed was the differences in water states before and after rice-planting. In addition, yearly changes in STD distributions in industrial regions and downtown regions could be seen. Diverse aspects of STD analysis methods were described to verify the methods.