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Evaluating Mitigation Effects of Urban Heat Islands in a Historical Small Center with the ENVI-Met ® Climate Model

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  • Dario Ambrosini

    (Las.E.R Laboratory, Department of Industrial and Information Engineering and Economics (DIIIE), University of L'Aquila, Piazzale Pontieri, Monteluco di Roio—67100 L'Aquila, Italy
    These authors contributed equally to this work.)

  • Giorgio Galli

    (Department of Astronautics, Electrical and Energetics Engineering (DIAEE), Sapienza University of Rome, Via Eudossiana, 18—00184 Roma, Italy
    These authors contributed equally to this work.)

  • Biagio Mancini

    (Las.E.R Laboratory, Department of Industrial and Information Engineering and Economics (DIIIE), University of L'Aquila, Piazzale Pontieri, Monteluco di Roio—67100 L'Aquila, Italy
    These authors contributed equally to this work.)

  • Iole Nardi

    (Las.E.R Laboratory, Department of Industrial and Information Engineering and Economics (DIIIE), University of L'Aquila, Piazzale Pontieri, Monteluco di Roio—67100 L'Aquila, Italy
    These authors contributed equally to this work.)

  • Stefano Sfarra

    (Las.E.R Laboratory, Department of Industrial and Information Engineering and Economics (DIIIE), University of L'Aquila, Piazzale Pontieri, Monteluco di Roio—67100 L'Aquila, Italy
    These authors contributed equally to this work.)

Abstract

Urban morphology and increasing building density play a key role in the overall use of energy and promotion of environmental sustainability. The urban environment causes a local increase of temperature, a phenomenon known as Urban Heat Island (UHI). The purpose of this work is the study of the possible formation of an UHI and the evaluation of its magnitude, in the context of a small city, carried out with the ENVI-met ® software. For this purpose, a simulation was needed, and this simulation is preparatory for a monitoring campaign on site, which will be held in the immediate future. ENVI-met ® simulates the temporal evolution of several thermodynamics parameters on a micro-scale range, creating a 3D, non-hydrostatic model of the interactions between building-atmosphere-vegetation. The weather conditions applied simulate a typical Italian summer heat wave. Three different case-studies have been analyzed: Base Case , Cool Case and Green Case . Analysis of the actual state in the Base Case shows how even in an area with average building density, such as the old town center of a small city, fully developed UHI may rise with strong thermal gradients between built areas and open zones with plenty of vegetation. These gradients arise in a really tiny space (few hundreds of meters), showing that the influence of urban geometry can be decisive in the characterization of local microclimate. Simulations, carried out considering the application of green or cool roofs, showed small relevant effects as they become evident only in large areas heavily built up (metropolis) subject to more intense climate conditions.

Suggested Citation

  • Dario Ambrosini & Giorgio Galli & Biagio Mancini & Iole Nardi & Stefano Sfarra, 2014. "Evaluating Mitigation Effects of Urban Heat Islands in a Historical Small Center with the ENVI-Met ® Climate Model," Sustainability, MDPI, vol. 6(10), pages 1-17, October.
    • Handle: RePEc:gam:jsusta:v:6:y:2014:i:10:p:7013-7029:d:41059
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    References listed on IDEAS

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    1. Taleb, Dana & Abu-Hijleh, Bassam, 2013. "Urban heat islands: Potential effect of organic and structured urban configurations on temperature variations in Dubai, UAE," Renewable Energy, Elsevier, vol. 50(C), pages 747-762.
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    14. Toparlar, Y. & Blocken, B. & Maiheu, B. & van Heijst, G.J.F., 2017. "A review on the CFD analysis of urban microclimate," Renewable and Sustainable Energy Reviews, Elsevier, vol. 80(C), pages 1613-1640.
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    17. Paul Eduardo Vásquez-Álvarez & Carlos Flores-Vázquez & Juan-Carlos Cobos-Torres & Sandra Lucía Cobos-Mora, 2022. "Urban Heat Island Mitigation through Planned Simulation," Sustainability, MDPI, vol. 14(14), pages 1-15, July.
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    19. Roberta Cocci Grifoni & Maria Federica Ottone & Enrico Prenna, 2017. "Tomographic Environmental Sections for Environmental Mitigation Devices in Historical Centers," Energies, MDPI, vol. 10(3), pages 1-18, March.

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