[A-AS02] 台風研究の新展開～過去・現在・未来

[AAS02-P16] Whirlwinds of Risk: Complex Insights into Cyclone Impacts

*Md. Rezuanul Islam¹、Yohei Sawada¹ (1.The University of Tokyo)

キーワード：Tropical cyclone, Risk, Ranking, Multi-objective optimization

Understanding tropical cyclone (TC) risk is crucial for societal resilience and aligns with the United Nations Sustainable Development Goals. Although analyzing and ranking historical TCs helps assess their associated risk, the optimal method to combine multiple risk factors into a single measure is still unclear. This makes it challenging for disaster risk practitioners to objectively assess overall risk from historical TCs. This work aims to improve our objective understanding of TC risk by using a novel multi-dimensional ranking system. By examining historical TCs in Japan from 1979–2019 through various lenses—impact, storm intensity, and associated hazards—this approach, for the first time, effectively identifies TCs that reflect complex and balanced trade-offs across various risk metrics, ensuring no single factor dominates the overall risk assessment. This insight is crucial for better preparing and protecting communities. The study highlights specific vulnerabilities in different regions of Japan, offering a framework that can be applied globally to enhance resilience against TCs. Understanding these complex interactions between meteorological hazards, societal exposures, and vulnerability helps policymakers and disaster management agencies to develop more targeted and effective strategies for reducing TC-related risk.