Journal of Natural Environment

Investigation and evaluation of thermal island status of Tehran metropolis, using satellite imagery

Document Type : Research Paper

Authors

1 Department of art and architecture, University of Bonab

2 Islamic University of Tabriz Branch

Abstract

The island's thermal city is one of the most prominent consequences of the expansion of urbanization and metropolitan development. The effects of the formation of thermal islands can play an important role in air quality and, consequently, in general health. The purpose of this study was to investigate the role of surface coatings on climate change in Tehran metropolis. In this study, the required data from the 10 and 11 bands of OLI and TIRS sensors of Satellite Landsat 8 in the summer and winter of 2017 are used. To study the thermal island status, single-band classes were used to study the distribution of ground temperature in the Tehran area and determine the local effects of Thermal Island in the city. Based on research findings, surface temperature and variables vegetation cover, city structural features and wasteland area, normal difference it was obtained to determine the effects of green, bare, blue and residential land on thermal island. The results showed that the effect of Isle of Man in the northern regions of the city is due to the existence of industrial township and mountain topography. There is also a correlation between ground temperature and Tehran's vegetation index, as the surface temperature of the city has increased with decreasing vegetation. Finally, according to research findings, practical proposals have been presented.

Keywords

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Journal of Natural Environment
Volume 72, Issue 1
March 2019
Pages 29-43