the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Brief communication: Impact forecasting could substantially improve the emergency management of deadly floods: case study July 2021 floods in Germany
Sergiy Vorogushyn
Bruno Merz
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Urban pluvial flooding is worsening due to climate change and urbanization, requiring faster forecasts. This study presents RIM2D, a multi-graphics processing unit (GPU) 2D flood model, simulating high-resolution events (2–10 m) across Berlin (891.8 km²) with up to 8 GPUs. Simulations of real and synthetic floods show multi-GPU use is vital for fine-scale, timely forecasts. RIM2D proves operationally viable for urban-scale early warning using modern GPU hardware.
Urban pluvial flooding is worsening due to climate change and urbanization, requiring faster forecasts. This study presents RIM2D, a multi-graphics processing unit (GPU) 2D flood model, simulating high-resolution events (2–10 m) across Berlin (891.8 km²) with up to 8 GPUs. Simulations of real and synthetic floods show multi-GPU use is vital for fine-scale, timely forecasts. RIM2D proves operationally viable for urban-scale early warning using modern GPU hardware.
impossibleyet are an ever-present threat similar to the sword suspended over the head of Damocles in the classical Greek anecdote. We discuss four reasons why extremely large floods carry a risk that is often larger than expected. We provide suggestions for managing the risk of megafloods by calling for a creative exploration of hazard scenarios and communicating the unknown corners of the reality of floods.