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Journal Article

Joint trends in flood magnitudes and spatial extents across Europe


Kemter,  M.
External Organizations;

Merz,  B.
External Organizations;


Marwan,  Norbert
Potsdam Institute for Climate Impact Research;

Vorogushyn,  S.
External Organizations;

Blöschl,  G.
External Organizations;

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Kemter, M., Merz, B., Marwan, N., Vorogushyn, S., Blöschl, G. (2020): Joint trends in flood magnitudes and spatial extents across Europe. - Geophysical Research Letters, 47, 7, e2020GL087464.

Cite as: https://publications.pik-potsdam.de/pubman/item/item_23943
The magnitudes of river floods in Europe have been observed to change, but their alignment with changes in the spatial coverage or extent of individual floods has not been clear. We analyze flood magnitudes and extents for 3,872 hydrometric stations across Europe over the past five decades and classify each flood based on antecedent weather conditions. We find positive correlations between flood magnitudes and extents for 95% of the stations. In central Europe and the British Isles, the association of increasing trends in magnitudes and extents is due to a magnitude‐extent correlation of precipitation and soil moisture along with a shift in the flood generating processes. The alignment of trends in flood magnitudes and extents highlights the increasing importance of transnational flood risk management.