Microclimatic and Environmental Improvement in a Mediterranean City through the Regeneration of an Area with Nature-Based Solutions: A Case Study

Katia Perini, Chiara Calise, Paola Castellari and Enrica Roccotiello
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Katia Perini: Department of Architecture and Design (DAD), University of Genoa, 16124 Genoa, Italy
Chiara Calise: Department of Earth, Environment and Life Sciences (DISTAV), University of Genoa, 16124 Genoa, Italy
Paola Castellari: Department of Architecture and Design (DAD), University of Genoa, 16124 Genoa, Italy
Enrica Roccotiello: Department of Earth, Environment and Life Sciences (DISTAV), University of Genoa, 16124 Genoa, Italy

Sustainability, 2022, vol. 14, issue 10, 1-18

Abstract: Dense urban areas are facing relevant issues related to their high vulnerability to the impacts of climate change and ecosystem health. The study presents a case study of a regeneration project with Nature-based Solutions in the city of Genoa (Italy) and, more specifically, in a neighbourhood characterised by relevant health and well-being issues. The performances of three design scenarios for a city hotspot, including plant species selected with a systemic approach and light pavements, are analysed in terms of improved microclimate by means of the ENVI-met software V4.4.5. The results show different benefits on the microclimate compared to the current state depending on the different scenarios: A UTCI decrease from 4.1 °C to 5.4 °C, a reduction of mean radiant temperature from 12.3 °C to 17.3 °C, a relative humidity increase from 3.8% to 5.6%, and a progressive decrease in wind speed are detected in a directly proportional way to the gradual increase in greenery inside the scenarios. In reverse, better results for air temperatures are detected for the scenario with less greening (Δt = 1.8 °C). The study relies on the re-parametrisation of plant species characteristics in the ENVI-met database to reach a high level of accuracy.

Keywords: Envi-MET; Urban Heat Island; thermal comfort; plant characteristics; ecosystem function; ecosystem services (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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