Uploaded on 2019-12-24 by Mohammad Reza Takallouie

Tehran is Iran’s largest city, with the highest rate of urbanization, 8 million people during the night-time, and the growing urbanization led to severe environmental changes. One crucial problem of developing urban areas is that of rising temperature, compared to rural areas, known as the urban heat island (UHI). It greatly increases urban environmental problems such as air pollution, higher temperature, traffic congestion and energy consumption. The main reasons of the formation of the UHI are the low albedo and the high heat capacity of built-up surfaces such as concrete or asphalt. Therefore greenery and using high albedo materials are two strategies, which can mitigate the UHI. Applying trees with broad canopies within residential yards led also to temperature reduction. Unfortunately due to lack of appropriate urban management, there is no emphatic policy on reducing the UHI effect. Reference : The article "Mitigating the Urban Heat Island Effect in Megacity Tehran"