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| Titel |
Hydrometeorological multi-model ensemble simulations of the 4 November 2011 flash flood event in Genoa, Italy, in the framework of the DRIHM project |
| VerfasserIn |
A. Hally, O. Caumont, L. Garrote, E. Richard, A. Weerts, F. Delogu, E. Fiori, N. Rebora, A. Parodi, A. Mihalović, M. Ivković, L. Dekić, W. van Verseveld, O. Nuissier, V. Ducrocq, D. D'Agostino, A. Galizia, E. Danovaro, A. Clematis |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 15, no. 3 ; Nr. 15, no. 3 (2015-03-12), S.537-555 |
| Datensatznummer |
250119370
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| Publikation (Nr.) |
 copernicus.org/nhess-15-537-2015.pdf |
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| Zusammenfassung |
The e-Science environment developed in the framework of the
EU-funded DRIHM project was used to demonstrate its ability to
provide relevant, meaningful hydrometeorological forecasts. This was
illustrated for the tragic case of 4 November 2011, when Genoa,
Italy, was flooded as the result of heavy, convective precipitation
that inundated the Bisagno catchment. The Meteorological Model
Bridge (MMB), an innovative software component developed within the
DRIHM project for the interoperability of meteorological and
hydrological models, is a key component of the DRIHM e-Science
environment. The MMB allowed three different rainfall-discharge
models (DRiFt, RIBS and HBV) to be driven by four mesoscale
limited-area atmospheric models (WRF-NMM, WRF-ARW, Meso-NH and
AROME) and a downscaling algorithm (RainFARM) in a seamless
fashion. In addition to this multi-model configuration, some of the
models were run in probabilistic mode, thus giving a comprehensive
account of modelling errors and a very large amount of likely
hydrometeorological scenarios (> 1500).
The multi-model approach proved to be necessary because, whilst
various aspects of the event were successfully simulated by
different models, none of the models reproduced all of these aspects
correctly. It was shown that the resulting set of simulations helped
identify key atmospheric processes responsible for the large
rainfall accumulations over the Bisagno basin. The DRIHM e-Science
environment facilitated an evaluation of the sensitivity to
atmospheric and hydrological modelling errors. This showed that both
had a significant impact on predicted discharges, the former being
larger than the latter. Finally, the usefulness of the set of
hydrometeorological simulations was assessed from a flash flood
early-warning perspective. |
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