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Causes, impacts and patterns of disastrous river floods

Urheber*innen

Merz,  Bruno
External Organizations;

Blöschl,  Günter
External Organizations;

Vorogushyn,  Sergiy
External Organizations;

Dottori,  Francesco
External Organizations;

Aerts,  Jeroen C. J. H.
External Organizations;

Bates,  Paul
External Organizations;

Bertola,  Miriam
External Organizations;

/persons/resource/matthias.kemter

Kemter,  Matthias
Potsdam Institute for Climate Impact Research;

Kreibich,  Heidi
External Organizations;

Lall,  Upmanu
External Organizations;

Macdonald,  Elena
External Organizations;

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Zitation

Merz, B., Blöschl, G., Vorogushyn, S., Dottori, F., Aerts, J. C. J. H., Bates, P., Bertola, M., Kemter, M., Kreibich, H., Lall, U., Macdonald, E. (2021): Causes, impacts and patterns of disastrous river floods. - Nature Reviews Earth & Environment, 2, 9, 592-609.
https://doi.org/10.1038/s43017-021-00195-3


Zitierlink: https://publications.pik-potsdam.de/pubman/item/item_26698
Zusammenfassung
Disastrous floods have caused millions of fatalities in the twentieth century, tens of billions of dollars of direct economic loss each year and serious disruption to global trade. In this Review, we provide a synthesis of the atmospheric, land surface and socio-economic processes that produce river floods with disastrous consequences. Disastrous floods have often been caused by processes fundamentally different from those of non-disastrous floods, such as unusual but recurring atmospheric circulation patterns or failures of flood defences, which lead to high levels of damage because they are unexpected both by citizens and by flood managers. Past trends in economic flood impacts show widespread increases, mostly driven by economic and population growth. However, the number of fatalities and people affected has decreased since the mid-1990s because of risk reduction measures, such as improved risk awareness and structural flood defences. Disastrous flooding is projected to increase in many regions, particularly in Asia and Africa, owing to climate and socio-economic changes, although substantial uncertainties remain. Assessing the risk of disastrous river floods requires a deeper understanding of their distinct causes. Transdisciplinary research is needed to understand the potential for surprise in flood risk systems better and to operationalize risk management concepts that account for limited knowledge and unexpected developments.