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Joint Trends in Flood Magnitudes and Spatial Extents Across Europe
Author(s) -
Kemter Matthias,
Merz Bruno,
Marwan Norbert,
Vorogushyn Sergiy,
Blöschl Günter
Publication year - 2020
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2020gl087464
Subject(s) - flood myth , magnitude (astronomy) , precipitation , physical geography , environmental science , climatology , climate change , antecedent (behavioral psychology) , hydrology (agriculture) , geology , geography , meteorology , physics , geotechnical engineering , archaeology , astronomy , psychology , developmental psychology , oceanography
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.