Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1029/2020GL090547
Licence creative commons licence
Title (Primary) Transformation of generation processes from small runoff events to large floods
Author Tarasova, L.; Basso, S.; Merz, R.
Source Titel Geophysical Research Letters
Year 2020
Department CATHYD
Volume 47
Issue 22
Page From e2020GL090547
Language englisch
Keywords flood origins; event classification; ordinary events; annual floods; upper tail floods; process transformation
Abstract Mixture of runoff generation processes poses a challenge for predicting upper flood quantiles. We examined transformations of generation processes from all identifiable runoff events to frequent and upper tail floods for a large set of mesoscale catchments and observed a substantial change of the dominant processes. Two trajectories of transformation were detected. In regions where floods occur almost exclusively in winter the dominance of processes related to snowmelt consistently increases from small events to frequent and upper tail floods. In catchments characterized by frequent winter‐spring floods and occasional summer‐autumn flood events triggered by rare meteorological phenomena (e.g., Vb‐cyclones), processes that dominate upper tails are not adequately represented in the sample of frequent floods. Predictions of extremes and projections of flood changes might remain highly uncertain in the latter cases.
Persistent UFZ Identifier
Tarasova, L., Basso, S., Merz, R. (2020):
Transformation of generation processes from small runoff events to large floods
Geophys. Res. Lett. 47 (22), e2020GL090547 10.1029/2020GL090547