STUDYING THE COHERENCE VALUES FOR UHI: A CASE STUDY OF IASI

Abstract

Thermal properties of surface, Earth’s surface energy balance and atmospheric conditions effect the land surface dramatically. Local and global change continues in the Earth’s climate since the industrial era continues. The urban heat island (UHI) represents the phenomenon of higher atmospheric and surface temperatures occurring in urban area or metropolitan area than in the surrounding rural zones due to urbanization. UHI is most noticeable during the summer and winter. The main cause of the UHI effect is from the modification of land surfaces. In this research was using MODIS and SENTINEL data. From SENTINEL images was extracted coherence maps to determine values of this parameter in areas where UHI was notice. Coherence for SUHI range from 0.20 to 0.89 for day and varies for night between 0.23-0.89.