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Analyzing the operational performance of the hydrological models in an alpine flood forecasting system
Unit of Hydraulic Engineering, University of Innsbruck.
AlpS - Centre for Climate Change Adaptation Technologies, Innsbruck.
Hydrology and Climate Unit, Department of Geography, University of Zurich.
Unit of Environmental Engineering, University of Innsbruck.ORCID-id: 0000-0003-0367-3449
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2012 (engelsk)Inngår i: Journal of Hydrology, ISSN 0022-1694, E-ISSN 1879-2707, Vol. 412-413, s. 90-100Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

During recent years a hybrid model has been set up for the operational forecasting of flood discharges in the 6750km 2 Tyrolean part of the River Inn catchment in Austria. The catchment can be characterized as a typical alpine area with large variations in altitude. The paper is focused on the error analysis of discharge forecasts of four main tributary catchments simulated with hydrological water balance models. The selected catchments cover an area of 2230km 2, where the non-glaciated and glaciated parts are modeled using the semi-distributed HQsim and the distributed model SES, respectively.The forecast errors are evaluated as a function of forecast lead time and forecasted discharge magnitude using 14 events from 2007 to 2010. The observed and forecasted precipitation inputs were obtained under operational conditions. The mean relative bias of the forecasted discharges revealed to be constant with regard to the forecast lead time, varying between 0.2 and 0.25 for the different catchments. The errors as a function of the forecasted discharge magnitude showed large errors at lower values of the forecast hydrographs, where errors decreased significantly at larger discharges being relevant in flood forecasting

sted, utgiver, år, opplag, sider
2012. Vol. 412-413, s. 90-100
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VA-teknik
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URN: urn:nbn:se:ltu:diva-63394DOI: 10.1016/j.jhydrol.2011.07.047Scopus ID: 2-s2.0-84155186552OAI: oai:DiVA.org:ltu-63394DiVA, id: diva2:1096134
Tilgjengelig fra: 2017-05-17 Laget: 2017-05-17 Sist oppdatert: 2017-11-24bibliografisk kontrollert

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