Towards better understanding the urban environment and its interactions with regional climate change - The WCRP CORDEX Flagship Pilot Study URB-RCC
Vers une meilleure compréhension de l'environnement urbain et de ses interactions avec le changement climatique régional - Étude pilote phare URB-RCC du WCRP CORDEX
Langendijk, Gaby S. ; Halenka, Tomas ; Hoffmann, Peter ; Adinolfi, Marianna ; Aldama Campino, Aitor ; Asselin, Olivier ; Bastin, Sophie ; Bechtel, Benjamin ; Belda, Michal ; Bushenkova, Angelina ; Campanale, Angelo ; Chun, Kwok Pan ; Constantinidou, Katiana ; Coppola, Erika ; Demuzere, Matthias ; Doan, Quang-Van ; Evans, Jason ; Feldmann, Hendrik ; Fernandez, Jesus ; Fita, Lluís ; Hadjinicolaou, Panos ; Hamdi, Rafiq ; Hundhausen, Marie ; Grawe, David ; Johannsen, Frederico ; Milovac, Josipa ; Katragkou, Eleni ; Kerroumi, Nour El Islam ; Kotlarski, Sven ; Le Roy, Benjamin ; Lemonsu, Aude ; Lennard, Christopher ; Lipson, Mathew ; Mandal, Shailendra ; Muñoz Pabón, Luís E. ; Pavlidis, Vassileios ; Pietikäinen, Joni-Pekka ; Raffa, Mario ; Raluy-López, Eloisa ; Rechid, Diana ; Ito, Rui ; Schulz, Jan-Peter ; Soares, Pedro M. M. ; Takane, Yuya ; Teichmann, Claas ; Thatcher, Marcus ; Top, Sara ; Van Schaeybroeck, Bert ; Wang, Fuxing ; Yuan, Jiacan
High-quality climate information tailored to cities' needs assists decision makers to prepare for and adapt to climate change impacts, as well as to support the targeted transition towards climate resilient cities. During the last decades, two main modelling approaches emerged to understand and analyse the urban climate and to generate information. Firstly, meso- and microscale urban climate models commonly resolve the street to city scale climate (1 m to 1 km) through simulating short "weather" type episodes, possibly under climate change conditions. Secondly, regional climate models (RCMs) are currently approaching the kilometer scale grid resolutions (1-4 km) and becoming increasingly relevant to understand the interactions of cities with the regional climate on timescales from decades up to a century. Therefore, the WCRP CORDEX Flagship Pilot Study "URBan environments and Regional Climate Change (FPS URB-RCC)" brings together the urban climate modelling community and the RCM community and focuses on understanding the interactions between urban areas and regional climate change, with the help of coordinated experiments with an RCM ensemble having refined urban representations. This paper presents the FPS URB-RCC, its main aims, as well as the initial steps taken. The FPS URB-RCC advances urban climate projections and information to support evidence-based climate action towards climate resilient cities.</p>
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