Assessment of flash floods taking into account climate change scenarios in the Llobregat River basin

Global change may imply important changes in the future occurrence and intensity of extreme events. Climate scenarios characterizing these plausible changes were previously obtained for the Llobregat River basin (NE Spain). This paper presents the implementation of these scenarios in the HBV (Hydrol...

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Main Authors: M. Velasco, P. A. Versini, A. Cabello, A. Barrera-Escoda
Format: Article
Language:English
Published: Copernicus Publications 2013-12-01
Series:Natural Hazards and Earth System Sciences
Online Access:http://www.nat-hazards-earth-syst-sci.net/13/3145/2013/nhess-13-3145-2013.pdf
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author M. Velasco
P. A. Versini
A. Cabello
A. Barrera-Escoda
author_facet M. Velasco
P. A. Versini
A. Cabello
A. Barrera-Escoda
author_sort M. Velasco
collection DOAJ
description Global change may imply important changes in the future occurrence and intensity of extreme events. Climate scenarios characterizing these plausible changes were previously obtained for the Llobregat River basin (NE Spain). This paper presents the implementation of these scenarios in the HBV (Hydrologiska Byråns Vattenbalansavdelning) hydrological model. Then, the expected changes in terms of flash flood occurrence and intensity are assessed for two different sub-basins: the Alt Llobregat and the Anoia (Llobregat River basin). <br><br> The assessment of future flash floods has been done in terms of the intensity and occurrence of extreme events, using a peak over threshold (POT) analysis. For these two sub-basins, most of the simulated scenarios present an increase of the intensity of the peak discharge values. On the other hand, the future occurrence follows different trends in the two sub-basins: an increase is observed in Alt Llobregat but a decrease occurs in Anoia. Despite the uncertainties that appear in the whole process, the results obtained can shed some light on how future flash floods events may occur.
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spelling doaj.art-1c30c88ac2e84087981d0018c75d372a2022-12-22T02:24:02ZengCopernicus PublicationsNatural Hazards and Earth System Sciences1561-86331684-99812013-12-0113123145315610.5194/nhess-13-3145-2013Assessment of flash floods taking into account climate change scenarios in the Llobregat River basinM. Velasco0P. A. Versini1A. Cabello2A. Barrera-Escoda3CETaqua Water Technology Centre, Barcelona, SpainCRAHI, Research Centre of Applied Hydrometeorology, Barcelona, SpainCETaqua Water Technology Centre, Barcelona, SpainSMC, Meteorological Service of Catalonia, Barcelona, SpainGlobal change may imply important changes in the future occurrence and intensity of extreme events. Climate scenarios characterizing these plausible changes were previously obtained for the Llobregat River basin (NE Spain). This paper presents the implementation of these scenarios in the HBV (Hydrologiska Byråns Vattenbalansavdelning) hydrological model. Then, the expected changes in terms of flash flood occurrence and intensity are assessed for two different sub-basins: the Alt Llobregat and the Anoia (Llobregat River basin). <br><br> The assessment of future flash floods has been done in terms of the intensity and occurrence of extreme events, using a peak over threshold (POT) analysis. For these two sub-basins, most of the simulated scenarios present an increase of the intensity of the peak discharge values. On the other hand, the future occurrence follows different trends in the two sub-basins: an increase is observed in Alt Llobregat but a decrease occurs in Anoia. Despite the uncertainties that appear in the whole process, the results obtained can shed some light on how future flash floods events may occur.http://www.nat-hazards-earth-syst-sci.net/13/3145/2013/nhess-13-3145-2013.pdf
spellingShingle M. Velasco
P. A. Versini
A. Cabello
A. Barrera-Escoda
Assessment of flash floods taking into account climate change scenarios in the Llobregat River basin
Natural Hazards and Earth System Sciences
title Assessment of flash floods taking into account climate change scenarios in the Llobregat River basin
title_full Assessment of flash floods taking into account climate change scenarios in the Llobregat River basin
title_fullStr Assessment of flash floods taking into account climate change scenarios in the Llobregat River basin
title_full_unstemmed Assessment of flash floods taking into account climate change scenarios in the Llobregat River basin
title_short Assessment of flash floods taking into account climate change scenarios in the Llobregat River basin
title_sort assessment of flash floods taking into account climate change scenarios in the llobregat river basin
url http://www.nat-hazards-earth-syst-sci.net/13/3145/2013/nhess-13-3145-2013.pdf
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AT acabello assessmentofflashfloodstakingintoaccountclimatechangescenariosinthellobregatriverbasin
AT abarreraescoda assessmentofflashfloodstakingintoaccountclimatechangescenariosinthellobregatriverbasin