Application of climate risk assessment framework for selected Italian airports: A focus on extreme temperature events

Due to increased extreme weather events as a consequence of climate change, climate risk analysis has become an essential issue for all critical infrastructures, including airports. The aim of this paper is to apply a climate risk assessment framework to evaluate the impacts of extreme temperatures on several Italian airports: Malpensa, Linate, Bergamo, Ciampino, Fiumicino, Napoli, Catania, Palermo, and Cagliari. According to the risk definition recommended in the Fifth Assessment Report of IPCC (2014), specific hazard, exposure and vulnerability indicators were identified. The hazard indicators were calculated using the UERRA regional reanalysis for the observed period (1981–2010), and then their climate variations were evaluated by means an ensemble of high-resolution climate projections from the EURO-CORDEX initiative for the near (2021–2050), medium (2041–2070), and long-term future period (2071–2100), under RCP 2.6, RCP 4.5, and RCP 8.5 scenarios. Exposure and vulnerability data were collected from multiple sources, such as official airports documents or websites. The final risk index obtained from the combination of these three factors allowed us to identify which of the selected airports are probable to face the major impacts due to extreme temperature events. This paper provides the knowledge base on risk assessment on Italian airports, with the aim to support the stakeholders for the selection and implementation of appropriate adaptation strategies and measures in relation to extreme temperatures.