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Investigating the Influence of Urban River Valleys on Meteorological Parameters at the Local Scale as a Factor for urban sustainability - Case study: Farahzad River Valley | ||
Pollution | ||
دوره 9، شماره 2، تیر 2023، صفحه 839-855 اصل مقاله (1.36 M) | ||
نوع مقاله: Original Research Paper | ||
شناسه دیجیتال (DOI): 10.22059/poll.2023.350003.1663 | ||
نویسندگان | ||
Hadis Allahyari؛ Esmael Salehi* ؛ Lobat Zebardast؛ Hamidreza Jafari | ||
School of Environment, College of Engineering, University of Tehran, Tehran, Iran | ||
چکیده | ||
Four regions of the Farahzad River Valley with different topography were selected to fully survey it and study the effects of morphology on local climate. then one of the hot days of the month of June 2021 (June 6th) was selected because the wind speeds increase in spring. According to the comparison of the simulation results with the existing site plans, the temperature in area 3 was the highest, 39.60 degrees, and the wind speed was 3.57 m/s. On the other hand, the study and analysis of the maps showed that the temperature of the roads in regions 3 and 4 were higher than the other two regions with a temperature range of 37.69-38.40, so the presence of impervious asphalt surfaces on the roads is very effective in increasing the air temperature in these areas. Comparisons also showed that tall buildings and vegetation create shaded areas and increase wind speed. Based on this, two scenarios were designed. In the first scenario, doubling the height of buildings increased wind speed in Region 3 by 3.42 m/s and decreased temperatures by 1.59 degrees. In the second scenario, when tall trees were planted at certain distances around the streets, the temperature in Region 3 decreased by 1.68 degrees and the wind speed increased by 1.68 m/s. The results show that the differences in the topography of urban valleys cause ventilation of the environment and that the effect of this feature in other environments is more effective through planting than through buildings. | ||
کلیدواژهها | ||
urban morphology؛ local climate؛ wind speed؛ temperature | ||
مراجع | ||
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Master’s thesis in landscape approach, University of Tehran(In persian) | ||
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