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Improving flood for...
Improving flood forecasting using an input correction method in urban models in poorly gauged areas
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Fava, Maria Clara (författare)
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- Mazzoleni, Maurizio (författare)
- Uppsala universitet,Luft-, vatten- och landskapslära,Centre of Natural Hazards and Disaster Science (CNDS), Uppsala University, Uppsala, Sweden
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Abe, Narumi (författare)
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Mendiondo, Eduardo Mario (författare)
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Solomatine, Dimitri P. (författare)
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(creator_code:org_t)
- 2020-03-03
- 2020
- Engelska.
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Ingår i: Hydrological Sciences Journal. - : Taylor & Francis Group. - 0262-6667 .- 0262-6667 .- 2150-3435. ; 65:7, s. 1096-1111
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Poorly monitored catchments could pose a challenge in the provision of accurate flood predictions by hydrological models, especially in urbanized areas subject to heavy rainfall events. Data assimilation techniques have been widely used in hydraulic and hydrological models for model updating (typically updating model states) to provide a more reliable prediction. However, in the case of nonlinear systems, such procedures are quite complex and time-consuming, making them unsuitable for real-time forecasting. In this study, we present a data assimilation procedure, which corrects the uncertain inputs (rainfall), rather than states, of an urban catchment model by assimilating water-level data. Five rainfall correction methods are proposed and their effectiveness is explored under different scenarios for assimilating data from one or multiple sensors. The methodology is adopted in the city of Sao Carlos, Brazil. The results show a significant improvement in the simulation accuracy.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)
Nyckelord
- data assimilation
- semi-distributed model
- flood modelling
- physically-based model
- SWMM
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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