Flood risk and climate change: global and regional perspectives

Flood risk and climate change: global and regional perspectives

2014 | Zbigniew W. Kundzewicz, Shinjiro Kanae, Sonia I. Seneviratne, John Handmer, Neville Nicholls, Pascal Peduzzi, Reinhard Mechler, Laurens M. Bouwer, Nigel Arnell, Katharine Mach, Robert Muir-Wood, G. Robert Brakenridge, Wolfgang Kron, Gerardo Benito, Yasushi Honda, Kiyoshi Takahashi and Boris Sherstyukov
The article discusses the relationship between flood risk and climate change, focusing on global and regional perspectives. It highlights that economic losses from floods have increased due to greater exposure of assets to risk. While there is no clear attribution of rain-generated flood trends to anthropogenic climate change, climate models suggest that increased frequency and intensity of heavy rainfall will lead to more local flooding. The study reviews literature from the IPCC SREX report and new publications, assessing flood risk changes in seven regions: Africa, Asia, Central and South America, Europe, North America, Oceania, and the Polar regions. It notes that climate change impacts on flood characteristics are highly sensitive to specific changes, and current confidence in numerical projections of flood magnitude or frequency is low. The article also discusses the causes of floods, including heavy rainfall, snowmelt, and urbanization, and the factors that influence flood risk, such as land use, hydrological systems, and socio-economic factors. It notes that while some studies show a partial relationship between recent increases in flood losses and changes in intense rainfall events, others find no significant trends. The article emphasizes the difficulty in identifying climate signals due to the complexity of factors influencing flood risk, including land use changes and river regulation. The study concludes that future flood risk will be influenced by changes in climate, catchment conditions, and exposure to loss. It highlights the importance of understanding regional variations in flood risk and the need for improved flood management and adaptation strategies. The article also discusses the challenges in estimating future flood impacts due to limited data and uncertainty in climate projections. Overall, the study underscores the need for a holistic approach to managing flood risk in the context of climate change.The article discusses the relationship between flood risk and climate change, focusing on global and regional perspectives. It highlights that economic losses from floods have increased due to greater exposure of assets to risk. While there is no clear attribution of rain-generated flood trends to anthropogenic climate change, climate models suggest that increased frequency and intensity of heavy rainfall will lead to more local flooding. The study reviews literature from the IPCC SREX report and new publications, assessing flood risk changes in seven regions: Africa, Asia, Central and South America, Europe, North America, Oceania, and the Polar regions. It notes that climate change impacts on flood characteristics are highly sensitive to specific changes, and current confidence in numerical projections of flood magnitude or frequency is low. The article also discusses the causes of floods, including heavy rainfall, snowmelt, and urbanization, and the factors that influence flood risk, such as land use, hydrological systems, and socio-economic factors. It notes that while some studies show a partial relationship between recent increases in flood losses and changes in intense rainfall events, others find no significant trends. The article emphasizes the difficulty in identifying climate signals due to the complexity of factors influencing flood risk, including land use changes and river regulation. The study concludes that future flood risk will be influenced by changes in climate, catchment conditions, and exposure to loss. It highlights the importance of understanding regional variations in flood risk and the need for improved flood management and adaptation strategies. The article also discusses the challenges in estimating future flood impacts due to limited data and uncertainty in climate projections. Overall, the study underscores the need for a holistic approach to managing flood risk in the context of climate change.
Reach us at info@study.space
[slides and audio] Flood risk and climate change%3A global and regional perspectives