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New research: Storm Surges and Heavy Rainfall Combine to Increase Flooding Risk in the Coastal USA

Historical data from the USA shows flood risk can increase several-fold in the presence of these two climatological phenomena.

 

 

A new paper from Nature Climate Change outlines how “compound flooding” resulting from the combined effects of intense rainfall and storm surges, increases disaster risk in some of  the USA’s major cities, including New York, Los Angeles and San Francisco.

 

By analysing historical records of hurricane tracks, tides and rainfall, researchers at the University of South Florida, in collaboration with researchers at the University of Maine, were able to determine that the number of compound flooding events had increased at many sites. They found that in some cases the associated extreme flood risk may be over five-times greater under today’s climatic conditions when compared to those of the 1940s.

 

RISC-KIT will provide a risk assessment tool for Europe under the WP2 Coastal Risk Assessment Framework (CRAF) tool incorporating hazard assessment and the identification of coastal vulnerability indicators using historical information from the RISC-KIT Case Study areas. To learn more about our progress to date please consult the publicly available documents in our Public Deliverables area.

 

Source: Wahl, T., Jain, S., Bender, J., Meyers, S.D. and Mark E. Luther (2015) Increasing risk of compound flooding from storm surge and rainfall for major US cities, Nature Climate Change, doi:10.1038/nclimate2736. Available for subscribers here.

waiaaa europa Deltares Ecologic CFR UAlg IMDC IO-BAS LIENSs-CNRS TUD WMO UPC CIMA BAW EurOcean SEI MU-FHRC UniCaen UCAM-CCRU UNESCO-IHE