Natural Hazards and Earth System Sciences
Natural Hazards and Earth System Sciences
NHESS
Articles | Volume 26, issue 7
Articles | Volume 26, issue 7
https://doi.org/10.5194/nhess-26-3213-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-26-3213-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 7
Research article
 | 
21 Jul 2026
Research article |  | 21 Jul 2026

Marine heatwave amplifies extreme multi-hazards of extratropical cyclone Babet

Piyali Goswami, Ségolène Berthou, Theodore G. Shepherd, Ambrogio Volonté, Sana Mahmood, Juan Manuel Castillo, Anne-Christine Péquignet, Yong-June Park, Mark Worsfold, Regina Rodrigues, and Magdalena A. Balmaseda

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Short summary
We examined how a marine heatwave - period of unusually warm ocean conditions - affected flooding and coastal erosion during a storm in northwest Europe. Using a state-of-the-art regional coupled model at km-scale, we compared simulations with and without the marine heatwave to isolate its effects on the storm hazards. Warmer shallow seas intensified rainfall, winds and surface depression of the storm, which integrated into larger increases of surge, wave power and river flows.
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