List of Articles جزیره گرمایی

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  1 - The role of heat island in temperature change process of Tehran metropolitan area1
  Sahar Mansouri shahriar khaledi Reza Borna Farideh Asadian
  This study aims to investigate the role of heat island in the process of temperature changes in an urban area of Tehran during 2010 and 2018, equivalent to 1389 and 1397. To evaluate the changes, five points were identified on the map of region 1 and its eight regions. More

  This study aims to investigate the role of heat island in the process of temperature changes in an urban area of Tehran during 2010 and 2018, equivalent to 1389 and 1397. To evaluate the changes, five points were identified on the map of region 1 and its eight regions. Then the middle month of each season from 2010 and 2018 was selected for review. Landsat 8 satellite data were used to analyze the heat island and the effects of urban construction on the intensification of this phenomenon. The maximum temperature data, normalized vegetation difference index, and ground surface temperature were extracted. This study shows that the level of vegetation in 2018 compared to 2010 has decreased sharply, so that it has caused temperature changes and also the creation of a heat island in recent years in the region. The increase in temperature in the morning and noon is observed in all selected months of the four seasons of the year. At the same time, the amount of increase in minimum temperatures was greater than the maximum temperatures. Manuscript profile
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  2 - Effect of Urban Green Walls on Reduction of Temperature in Microclimates and Urban Heat Island
  Maryam Azmoodeh Shahin Heidari
  10.22034/jest.2017.11398
  Background and Objective: The speedy process of urbanization is destroying urban green spaces and causing a lot of problems including urban heat island. To restore back the nature into the urban landscape and to set up a balanced cycle among the climate factors, green s More

  Background and Objective: The speedy process of urbanization is destroying urban green spaces and causing a lot of problems including urban heat island. To restore back the nature into the urban landscape and to set up a balanced cycle among the climate factors, green surfaces can be the key element to this transformation. For this purpose, vegetation can be very helpful through its cooling effect, evapotranspiration and shading. Method: The main method used in this research is field study, in which, by a data logger, air temperature and relative humidity were recorded in certain points with definite distances from two green walls. Findings: According to the measurements, green surfaces reduce the temperature of their surrounding area by 0.63 to 1.0 ˚C during warm seasons. Furthermore, during cold seasons, temperature of the areas where are covered with vegetation is higher by 2.43 to 1.76 ˚C. Conclusion: The obtained results indicate that during warm seasons, temperature of green-wall surrounding area is cooler up to 1.0 ˚C and during cold seasons it is warmer up to 3.0 ˚C. Therefore, building vertical green structures creates an appropriate environment by reducing the temperature during warm seasons and increasing the temperature during cold seasons, and makes a proper microclimate at their surrounding area. Manuscript profile
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  3 - Investigating the Role of Tourism Development in Garden Houses in Reducing the Effects of the Urban Heat Island in Isfahan
  Khadijeh salehi Amir Gandomkar
  The expansion of urbanization and the development of urban lands towards orchards and agricultural farms is one of the biggest problems of the country's major cities, and in recent years, this development, along with reduced water resources and a sharp increase in popul More

  The expansion of urbanization and the development of urban lands towards orchards and agricultural farms is one of the biggest problems of the country's major cities, and in recent years, this development, along with reduced water resources and a sharp increase in population, has led to the development of urban heat and metropolitan heating. In this study, by examining the situation of the heat island of Isfahan and its surroundings, as well as changes in green spaces and gardens adjacent to the city of Isfahan, the relationship between these two variables was evaluated. The research method is descriptive and correlational and the purpose of this study is to investigate the role of tourism development of garden houses around the city of Isfahan and its role in reducing the effects of the heat island of Isfahan. The results of this study showed that in recent years the temperature of Isfahan and its surroundings has increased between 2.5 to 4 degrees Celsius and this increase has coincided with the development of Isfahan and the destruction of gardens around the city.   Manuscript profile