STUDY ON DETERNINATION OF URBAN SURFACE TEMPERATURE BY THERMAL REMOTE SENSING METHOD

Abstract

Thermal infrared remote sensing potentially measures the earth's surface radiation for retrieving surface temperature values in the whole study area by pixel. The paper presents the results of study on methodology to determinate the urban surface temperature of Ho Chi Minh City considered surface emissivity factor from NDVI method. This method shows the surface temperature map with spatial resolution higher than the one derived directly from the thermal bands. The experiment was carried out on two kinds of the satellite images such as Landsat and Aster owing the thermal infrared bands with the medium spatial resolution, suitable for studies on heat processes in urban areas. The results were compared with the in situ measurements in 10 observed sites and analyzed in errors by many other methods for proving the method preeminent in the study condition. The results will contribute a new approach to resolve the determination of meteorological parameters related to heat processes in climate change research at present.