Analysis of heat island formation in land use of Ardabil city using thermal remote sensing imagers

Abstract

Land surface temperature (LST) is one of the essential parameters of environmental science studies. In this study the land surface temperature of Ardabil city using a LST automatic calculator application was estimated with a single channel algorithm. for this purpose, Landsat 5 and 8 satellite images on 2000/07/31 and 2019/08/21 were used. In order to validate the LST map of the application output in addition to the data of two meteorological stations in the study area, from the surface temperature of two ground stations that were recorded simultaneously with the satellite was also used. Finally using the LST map, hot spots analysis and hot and cold clusters of thermal islands of Ardabil city were extracted. Also, using the GEE web platform, the land use map of the study area with the RF algorithm was prepared. The analysis spatial correlation with Moran global indices showed the land surface temperature of Ardabil city has a spatial structure and are distributed in clusters. The results showed that the lowest surface temperatures to water areas, irrigated agriculture and residential areas are formed and thermal cores are mostly created outside residential areas in barren lands rainfed agriculture and rangeland.