Building According to Climate Change

Rollandi, Annalisa and Günther, Felix (2023) Building According to Climate Change. In: Proceedings of REAL CORP 2023, 28th International Conference on Urban Development, Regional Planning and Information Society REAL CORP 2023, 18/20-09-2023, Ljubljana.

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Urban heat islands are a frequent phenomenon that significantly impacts liveability and human well-being. The ongoing research aims to provide an updated map of Tessin Canton's critical spatial and thematic areas in Switzerland. Furthermore, the objective is to investigate the level of performance of the current guidelines and provide indications to ensure a greater level of sustainability in the urban planning of cities. In adapting to climate change, the Swiss Confederation established an action plan for 2020-2025 comprising 75 measures. This intersectoral coordination document provides the cantons and municipalities with practical actions for tackling climate change. The research stems from a holistic view of the south of the Alps heat island phenomenon through an interdisciplinary and multiscalar approach. Therefore, the attention is on the trend of summer temperatures, particularly on days of heatwave. Furthermore, the study verifies the effects of the nature-based solutions adopted in the territory. In this way, it evaluates the impact of the measures in the action plan and the variables that most affect human well-being. The study is developed in three consecutive phases based on the literature and the work carried out by the Federal Office for the Environment (UFAM). First, the available satellite images calculated the Land Surface Temperature (LST) and the perceived temperature (PET). Integrating these results with geospatial, demographic and settlement data has made it possible to identify the most sensitive areas of Tessin Canton. In the next phase, the liveability in the heat islands was investigated. Various instruments (sensors, Climametro and thermal imaging camera) were used to analyse the climatic data and the data on the built environment in the urban area of Mendrisio, a city in the south. In the third phase, the main aim was to verify the urban microclimate and provide valuable indications for the definition of a sustainable city. Therefore, the relationships between land use, urban typologies and abiotic nature were investigated. The results of the ongoing research concern extending the heat islands of the Tessin Canton and evaluating the effects of the measures promoted by the UFAM. The next phase will allow for an in-depth study of the role of surface and groundwater in urban areas and valley floors. The aim is to provide further indications for implementing the sponge-city concept. The ongoing study is possible thanks to the synergies between the University of Applied Sciences and Arts of Southern Switzerland and the Republic of Tessin Canton. The results obtained greatly help provide guidelines for sustainable territorial planning that is attentive to human well-being.

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