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Developing an SDSS for optimal sustainable roof covering planning based on UHI variation at neighborhood scale

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Abstract

Nowadays, academics have paid special attention to global warming, because it has several issues such as urban heat island (UHI) related to the quality of life. For this purpose, a spatial decision support system (SDSS) has been developed to investigate the effect of parcels’ roof covering type on surface heat island (SHI) values and its variation at the neighborhood scale in Tehran, Iran. This SDSS, as the innovation of the present research, consists of two main steps including estimating the UHI value in the study area and adopting the optimum set of parcels to change their roofs’ cover with three types of vegetation, high-albedo material, and flagstone. The first step is accomplished by aggregating various indices related to land cover obtained from Landsat 8 images. The aggregation is done by linear regression method (LRM) with an RMSE and R2 equal to 0.942 and 0.897, respectively. Then, the genetic algorithm was used to select the optimal subset, including 10% of the parcels in the area, to change their roof covering type based on minimizing the UHI’s variation. The standard deviation obtained after the changes improved from 13.222 to 10.781 °C. The results indicate that to control UHI in the center of the region, it is necessary to inhibit UHI effects at the boundary of the study area with vegetation roof covering since flagstone and high-albedo materials have local effects on controlling the UHI effects.

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Correspondence to H. Aghamohammadi Zanjirabad.

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Mostofi, N., Aghamohammadi Zanjirabad, H., Vafaeinejad, A. et al. Developing an SDSS for optimal sustainable roof covering planning based on UHI variation at neighborhood scale. Environ Monit Assess 193, 372 (2021). https://doi.org/10.1007/s10661-021-09151-6

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  • DOI: https://doi.org/10.1007/s10661-021-09151-6

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